ВИНТОВОЙ КОМПРЕССОР

Изобретение относится к винтовому компрессору. Винтовой компрессор (1) содержит камеру (2) сжатия, образованную корпусом (3), в которой установлены два входящих в зацепление ротора (4, 5), и приводной двигатель (14), снабженный камерой (16) двигателя, образованной корпусом (15), в которой установлен вал (17). Вал (17) приводит в движение по меньшей мере один из двух роторов (4, 5). Корпуса (3) и (15) присоединены непосредственно друг к другу для образования корпуса (28) компрессора. Камеры (16) и (2) не изолированы друг от друга. Валы (7, 8) роторов (4, 5) и вал (17) проходят вдоль направлений (ΑΑ', ΒΒ', СС'), расположенных под углом или перпендикулярно к горизонтальной плоскости. Корпус (3) имеет основание (29) или нижнюю секцию корпуса (28). Корпус (15) образует головную часть (30) или верхнюю секцию корпуса (28). Камера (2) снабжена впускным отверстием (9), расположенным вблизи конца (12) роторов (4, 5), являющихся ближайшими к головной части (30) корпуса (28), а также выходным отверстием ...

Компрессионный механизм

Полезная модель относится к области компрессоростроения и может быть применена в спиральных компрессорах для использования в системах кондиционирования воздуха, вакуумной технике и в холодильных машинах. Компрессионный механизм размещен в корпусе и содержит неподвижную и подвижную спирали, причем каждая спираль выполнена в виде пластины с витком, которые вставлены друг в друга с минимально безопасным зазором между ними, при этом пластина подвижной спирали закреплена на механизме, обеспечивающем ее орбитальное движение, а пластина неподвижной спирали жестко закреплена в корпусе, и ее поверхность расположена в непосредственной близости от верхней поверхности витка подвижной спирали, при этом на верхней поверхности витка подвижной спирали выполнена канавка с заполнением ее сферическими телами качения, причем ширина канавки на 0,3 % больше диаметра сферического тела качения, а ее глубина равна разнице диаметра тела качения и зазора между витком подвижной и пластиной неподвижной спирали. Технический ...

Компрессорный агрегат

Полезная модель относится к машиностроению, в частности, к устройству спиральных компрессорных агрегатов. В компрессорном агрегате, содержащем герметичный цилиндрический корпус с полостями низкого и высокого давления с магистралями соответственно всасывания и нагнетания, размещенные соосно корпусу в полости низкого давления электродвигатель с закрепленным на стенке корпуса статором и ротором с установленным в крайней и срединной подшипниковых опорах валом, выполненным со сквозным осевым каналом, гидравлически соединенным с подшипником крайней опоры и с торцевым со стороны полости высокого давления, цилиндрическим с эксцентриситетом е относительно оси вала углублением с размещенным в нем опорным подшипником, в котором с торцевым зазором относительно вала установлен хвостовик подвижной спирали с возможностью ее плоскопараллельного перемещения под действием вращающегося вала, и неподвижную спираль, образующую с подвижной спиралью рабочую полость и герметично связанную с корпусом соосно последнему, и размещенные в полости высокого давления маслосборник, патрубок подачи масла из маслосборника в каналы подачи масла к трущимся деталям и маслоотделитель, каналы подачи масла к трущимся деталям выполнены последовательно сообщающимися согласно следующему: в неподвижной спирали - с входом от подведенного к ней патрубка подачи масла и с выходом к срединной подшипниковой опоре, в срединной подшипниковой опоре - с входом от канала в неподвижной спирали и с выходом к тыльной поверхности подвижной спирали с ответвлением к подшипнику срединной опоры, в подвижной спирали - с входом от канала в срединной подшипниковой РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 168 391 U1 (51) МПК F04C 18/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21)(22) Заявка: 2016140858, 18.10.2016 (24) Дата начала отсчета срока действия патента: 18.10.2016 (72) Автор(ы): Новокшанов Аркадий Владимирович (RU) Дата регистрации: 01.02.2017 ...

Antriebszapfenteil für Spiralverdichter

Spiralverdichter mit Flüssigkeitseinspritzung

Scrollverdichter

... [Aufgabe] Es wird ein Scrollverdichter vorgeschlagen, der eine verbesserte Bearbeitbarkeit ermöglicht, wenn eine Gegendruckkammer und eine Verdichtungskammer miteinander verbunden sind. [Lösung] Ein Scrollverdichter 1 weist eine Gegendruckkammer 39, die in einer hinteren Oberfläche einer Spiegelplatte 31 einer beweglichen Schnecke 22 in dem Scrollverdichter 1 ausgebildet ist, und ein Verbindungsloch 51 auf, das in der Spiegelplatte 31 der beweglichen Schnecke 22 ausgebildet ist und die Gegendruckkammer 39 und eine Verdichtungskammer 34 miteinander verbindet. Das Verbindungsloch 51 besteht aus einem Lochabschnitt mit großem Durchmesser 52, der sich auf der Seite der Gegendruckkammer 39 der Spiegelplatte 31 der beweglichen Schnecke 22 befindet, und einem Lochabschnitt mit kleinem Durchmesser 53, der sich von dem Lochabschnitt mit großem Durchmesser 52 fortsetzt, um die Verdichtungskammer 34 zu erreichen.

Spiralverdichter mit Einspritzanlage

SPIRALVERDICHTER MIT EINRICHTUNG ZUR VERDRAENGUNGSREGELUNG.

Spiralteil für Spiralverdrängungsmaschine für Fluida.

Spiralverdichter

Spiralverdichter

Spiralverdichter

SPIRALPUMPE

Dry vacuum scroll pump

A dry scroll vacuum pump comprising a pump housing 12 having a housing inlet 24 and a housing outlet 26, a fixed scroll 22 fixed relative to the pump housing, a drive shaft 14 having an axis 70 and an eccentric shaft portion 16, an orbiting scroll 20 connected to the eccentric shaft portion so that during use rotation of the shaft imparts an orbiting motion to the orbiting scroll relative to the fixed scroll for pumping gas between a mechanism inlet 25 and a mechanism outlet 31 of a scroll mechanism 60 comprising the scrolls, an inlet vacuum region 30 at inlet pressure within the pump housing for conveying gas from the pump inlet to the mechanism inlet during said orbiting motion, a cooling flow path 74 formed inside the orbiting scroll for guiding flow of a cooling fluid 80 for cooling the orbiting scroll, the cooling flow path having a fluid inlet located in the inlet vacuum region, and a sealing arrangement 82 for sealing the fluid inlet from the inlet vacuum region so a cooling fluid ...

Vacuum pump system with light gas pumping and leak detection apparatus comprising the same

Scroll fluid machine

Compressor assembly with receiver and memory unit

A sealed compressor assembly has a compressor pump unit 10 e.g. a scroll compressor driven by a motor 34 within a housing 14. A memory tag 16 comprising a receiver, a memory, a transmitter and a microprocessor is also mounted to the housing. The memory tag co-operates with a portable remote unit 62 which may write information to or read from the memory tag through radio signals S1, S2. The information may include manufacturing information (e.g. an identification number, a manufacture date), service information (e.g. service history), environmental information and use information. Enables the information to be associated with the compressor and easily read by the remote unit.

Kinetic energy recovery system

A kinetic energy recovery and/or storage system 12 for a motor vehicle 10 is provided. The kinetic energy recovery system 12 comprises: a flywheel 14 supported for rotation on a shaft 16 in a first vacuum enclosure 22 for receiving energy from and dissipating energy to one or more parts 20 of the vehicle 10; a scroll vacuum pumping arrangement 24 having an inlet 31 arranged to be in fluid communication with an outlet 30 of the first vacuum enclosure 22 for evacuating the first vacuum enclosure 22; a second vacuum enclosure 32 having an inlet 34 in fluid communication with an exhaust 33 of the scroll pumping arrangement 24 and arranged to be maintained at a pressure less than atmosphere for reducing the pressure at the exhaust 33 of the scroll pumping arrangement 24. The second vacuum enclosure 32 comprises an outlet 36 through which gas can be pumped periodically for maintaining the second vacuum enclosure 32 at a pressure less than atmosphere.

Vacuum pump system with light gas pumping and leak detection apparatus comprising the same

A rough vacuum pump system 1000 includes a primary vacuum pump 100 and a secondary vacuum pump 200. The primary vacuum pump is an oil-free positive displacement pump, and has an inlet opening, an outlet opening, a compression stage P between the inlet 170 and outlet openings 180, and an intermediate gas passageway 190 that connects to a gas flow path running through the compression stage. The secondary vacuum pump is connected to the intermediate gas passageway of the primary vacuum pump. The compression ratio of the primary and secondary vacuum pumps operating in combination is greater than that of the compression ratio of either of the primary and secondary vacuum pumps operating individually. A control valve may be positioned at the inlet to the second pump to prevent flow to the pump. A control system may switch off the second pump when the valve is closed. An additional embodiment utilises a scroll pump and has a check valve 140 disposed on the outlet of the primary pump. In further ...

Scroll compressor

A pump and a method of pumping a gas

Rota magetizing method, electric motor and scroll compressor

VACCUM PUMP WITH SEVERAL WAVES AND WITH CYCLIC TRANSMISSION

SPIRAL COMPRESSOR

SPIRAL DISPLACEMENT PLANT FOR FLUIDS

PROCEDURE, CIRCULAR SCRAPER AND BROACHING MACHINE FOR MANUFACTURING SNAIL MEMBERS FOR SNAIL-WELL-BEHAVED DEVICES.

SPIRAL COMPRESSOR

SPIRAL COMPRESSOR WITH PROTECTION AGAINST DIRECTION OF ROTATION REVERSAL

SPIRAL COMPRESSOR

HERMETIC SCROLL TYPE COMPRESSOR

AXIAL BEARINGS FOR SCROLL PUMPS

SCROLL COMPRESSOR WITH VARIABLE DISPLACEMENT

Scroll-type fluid machine

Scroll compressor with offset scroll members

SCROLL TYPE FLUID MACHINERY

Scroll type fluid machine

Provided is a scroll type fluid machine (1) having a tube structure (40). This tube structure (40) includes a boss (36) fitted in a through hole (4a) from the outside of a closed container (4), for forming a joint portion (42) so as to seal the through hole (4a) between itself and the closed container (4), an inner tube (38) of a copper-plated iron base material fitted in the boss (36) and inserted into a scroll unit (12), and an outer tube (8) of a copper base material fitted in the inner tube (38) and arranged to protrude from the boss (36) to the outer side of the closed container (4). The boss (36) is made of a copper-plated iron base material having an iron-exposed portion (48), in which the iron base material is exposed to the outside at the joint portion (42).

Scroll fluid machine

Rotary fluid machine

Scroll compressor

A scroll compressor (1) is provided with a fixed scroll (4), a movable scroll (5) rotationally driven relative to the fixed scroll (4), and a casing (10) for containing the fixed scroll (4) and the movable scroll (5). A housing (3) is provided on the rear surface side of the movable scroll (5), and a second back pressure space (24) is formed between the housing (3) and the movable scroll (5). In the casing (10) is formed an upper space (16) partitioned by the housing (3). A refrigerant gas being compressed is introduced from a compression chamber (50) into the second back pressure space (24) and the upper space (16).

Scroll type compressor with injection mechanism

Scroll type compressor

Scroll-type fluid machine

Oldham coupling for scroll machine

SCROLL-TYPE MACHINE

SCROLL PUMP

SCROLL MEMBER FOR SCROLL TYPE FLUID DISPLACEMENT APPARATUS

SCROLL COMPRESSOR

SCROLL COMPRESSOR

A scroll compressor 40 comprises: housing 12, orbiting scroll 26 and fixed scroll 41. The drive shaft 14 has an eccentric shaft portion 18 so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll. Axial spacers 42 are located between the fixed scroll and the housing for spacing the fixed scroll relative to the orbiting scroll. When the scroll compressor 40 is assembled and tested and it is desired to perform shimming, the fixed scroll can be removed and a selected spacer placed in position prior to re-assembling the fixed scroll.

SCROLL TYPE FLUID DISPLACEMENT APPARATUS WITH IMPROVED FIXED SCROLL CONSTRUCTION

SCROLL TYPE FLUID DISPLACEMENT APPARATUS WITH IMPROVED FIXED SCROLL CONSTRUCTION A scroll type fluid displacement apparatus including an orbiting scroll and a fixed scroll, each having an end plate and a spiral element is disclosed. The spiral elements interfit at an angular and radial offset to form a plurality of line contacts between the spiral curved surfaces to define at least one pair of fluid pockets. A driving mechanism is operatively connected to the orbiting scroll for orbiting the orbiting scroll relative to the fixed scroll while preventing rotation of the orbiting scroll. This changes the volume of the fluid pockets. A plurality of threaded holes are formed through the end plate of the fixed scroll for attaching the fixed scroll to the inner end surface of projecting portions of the compressor housing. The projecting portions extend toward the fixed scroll and have threaded holes formed therein. A bolt is screwed through the fixed scroll holes and into the holes in the projecting ...

PRE-TESTABLE AND REPAIRABLE HERMETIC SCROLL TYPE COMPRESSOR

PRE-TESTABLE AND REPAIRABLE HERMETIC SCROLL TYPE COMPRESSOR A hermetic type scroll compressor includes a hermetically sealed compressor housing formed by first and second cup shaped casings. The first casing houses a compression mechanism, while the second casing houses a drive mechanism. The compression mechanism includes a fixed scroll affixed to the first cup shaped casing, an orbiting scroll interfitted atan angular and radial offset with the fixed scroll, and a rotation preventing device disposed between the orbiting scroll and the center block. The movement of both the compression and driving mechanisms may be inspected or tested and those mechanisms may be readily disassembled so that component parts thereof may be adjusted or replaced before hermetically securing the first casing to the second casing. Furthermore, each casing is provided with a center block forming, in part, an alignment mechanism for aligning the drive mechanism drive shaft with the orbiting scroll of the compression ...

PUMP

The present invention relates to a pump (10) comprising a shaft (15) supported for rotation by a bearing (38) carried by a bearing carrier (48), said bearing carrier having a generally outer radial portion (52) which is fixed relative to a pump housing (12) and a generally inner radial portion (54) which is fixed relative to the bearing, wherein the carrier is stiff in a radial direction between said inner and outer portions and flexible in an axial direction for restraining radial movement of the bearing and allowing axial movement.

VARIABLE CAPACITY SCREW COMPRESSOR AND METHOD

A variable capacity screw compressor comprises a suction port, at least two screw rotors and a discharge port being configured in relation to a selected rotational speed that operates at least one screw rotor at an optimum peripheral velocity that is independent of a peripheral velocity of the at least one screw rotor at a synchronous motor rotational speed for a rated screw compressor capacity. A motor is configured to drive the at least one screw rotor at a rotational speed at a full-load capacity that is substantially greater than the synchronous motor rotational speed at the rated screw compressor capacity. A variable speed drive receives a command signal from a controller and generates a control signal that drives the motor at the selected rotational speed. A method for sizing at least two variable capacity screw compressors and a refrigeration chiller incorporating a variable capacity screw compressor are separately presented.

CENTRIFUGAL REFRIGERANT VAPOUR COMPRESSORS

A centrifugal compressor for compressing a refrigerant vapour in a refrigeration cycle. The compressor comprises an impeller drive shaft (28)supported by first and second radial bearings (32) for rotation within the compressor housing and an impeller assembly including at least one centrifugal impeller wheel mounted on the impeller drive shaft to rotate with the impeller drive shaft. The first and second radial bearings are hydrodynamic fluid bearings in which the bearing fluid is the refrigerant vapour. The compressor further comprising a conduit (36) for supplying a portion of the refrigerant vapour from the impeller assembly to the first and second fluid bearings.

SCROLL COMPRESSOR WITH DISCHARGE VALVE OPENED BY CENTRIFUGAL FORCE

A scroll compressor, having a first scroll member and a second scroll member, includes a discharge valve device for closing an opening of a discharge port in which the discharge opening is disposed in at least one of the first and second scroll members. The discharge valve device is configured so that it is effected by a centrifugal force during operation of the scroll compressor. The centrifugal force normally maintains the discharge valve device in an open position with respect to the discharge opening. Thus, the discharge valve device is not actuated by a pressure chamber and the scroll members are not rotated in reverse when operation of the scroll compressor is stopped.

SCROLL TYPE COMPRESSOR

A scroll type compressor has bypass ports which communicate with the compression chambers. The bypass ports are bored in an, end plate of a stationary scroll. A capacity control block is contained inside a bypass passage which has the bypass ports communicate with a suction chamber formed in a housing. A valve mechanism which opens and closes the bypass passage is formed separately from the stationary scroll. The capacity control block is engaged with the stationary scroll and installed fixedly in the housing, thereby to control the output capacity of the compressor in a range from 0% to 100%.

SCROLL TYPE FLUID MACHINERY

According to the present invention, there is provided a scroll type fluid machinery, in which a stationary scroll and a revolving scroll having spiral wraps set up on inner surfaces of respective end plates are engaged with each other, a drive bushing is inserted rotatably into a boss which is projected at a central part of an outer surface of the end plate of the revolving scroll, and an eccentric driving pin of a rotary shaft is fitted slidably into a slide groove bored through the drive bushing, characterized in that a gap between one end of the slide groove in a direction that the radius of revolution becomes larger and the eccentric driving pin is set to a preset very small distance .delta. (here, .delta. is a value determined based on processing error, deformation due to temperature and pressure and the like of abovementioned respective scrolls) when the evolving scroll occupies a position of theoretical radius of revolution thereof. With this, it is possible to prevent the drive ...

CAPACITY CONTROL MECHANISM FOR SCROLL-TYPE COMPRESSOR

METHOD OF DYNAMICALLY BALANCING NESTED COUPLING MECHANISMS FOR SCROLL MACHINES

SCROLL TYPE FLUID MACHINE

Object: To provide a high performance scroll type fluid machine in which machining is facilitated, strength of central end portion of scroll wrap is high enough, volume of the innermost compression chamber becomes zero and yet compression efficiency does not lower. Solving means: A central end portion profile of spiral wrap of each scroll (1, 2) is formed in a steplike shape having at least two steps (1A, 1B and 2A, 2B), the central end portion profile of each said step is made in a complete engagement profile and thickness of said step-like spiral wrap is made thinner at the upper step leaving an end plate.

TWO STAGE VACUUM PUMPING APPARATUS

Vacuum pumping apparatus includes a non-scroll type auxiliary pump (60) and a scroll pump (62) disposed in a single housing (52). The auxiliary pump and the scroll pump are connected in series and are driven by a common motor (68). Typically, the auxiliary pump has a relatively high pumping speed and the scroll pump has a relatively high compression ratio. The auxiliary pump may be a regenerative blower, a roots-type blower or a screw-type blower. When a corotating scroll pump is utilized, a regenerative blower may be formed at or near the outer periphery of a disk on which the non-orbiting scroll blade is mounted. In another configuration, first and second scroll pumps are disposed within a housing. The scroll blade sets of the first and second scroll pumps have different orbiting radii. Scroll pump leakage may be reduced by forming a closed-loop seal around the inlet region of the scroll pump and connecting the inlet region to an intermediate pressure. Scroll pump leakage and contamination ...

ROTATION POSITIVE-DISPLACEMENT PUMP.

Compressor assembly with liquid sensor

Scroll compressor

COMPRESSOR HAS SPIRAL TEAM Of a DEFLECTOR Compared to the OPENING Of ASPIRATIONMENAGE IN ITS ENVELOPE

INTERPHASE INSULATING SHEET FOR ROTATING ELECTRIC MACHINE, ROTATING ELECTRIC MACHINE, AND ELECTRIC COMPRESSOR FOR VEHICLE

Ring-shaped parts of a first interphase insulating sheet comprise void parts. After a U-shaped coil is inserted into wave winding, bridge parts are mounted on slots for an adjacent V-shaped coil. The void parts are formed in positions corresponding to the bridge parts arranged between two arbitrary coil ends among coil ends. The ring-shaped parts are stretched to form a pentagonal shape generally, thereby the V-shaped coil can be easily mounted thereon. The void parts formed in positions that do not require insulation do not damage to an insulation function of the first interphase insulating sheet. The void parts formed by being arranged with an extension part of the bridge parts do not cause a reduction in strength of the ring-shaped parts. COPYRIGHT KIPO 2015 ...

COMPRESSOR CARACOL

COMPRESSOR DE VOLUTA PARA COMPRIMIR UM FLUIDO

método de produzir compressor, e compressor

SCROLL-TYPE MACHINE

conjunto de compressor e máquina de rolamento

Aperfeiçoamentos para bombas giratórias

mÁquina de voluta.

SCROLL-TYPE COMPRESSOR

... [Problem] To provide a scroll-type compressor capable of increasing the fluidity of a lubricant throughout a compressor by using a simple configuration, and thereby improve the lubrication performance, durability, and compression efficiency of the compressor, as a result of using the revolving turning motion of a movable scroll, smoothly introducing lubricant into sliding sections of the movable scroll, and improving the fluidity of the lubricant in the sliding sections. [Solution] A scroll-type compressor comprising: annular spaces (68, 72) connected to an intake chamber (60), facing peripheral edges (70, 74) of a thrust surface (42a) of support members (42, 4c), and partitioned along the circumferential direction inside a housing (4); and annular grooves (78, 84) on at least either the rear surface (26a) or thrust surface of a movable scroll (26), and recessed along the circumferential direction of same. The annular grooves protrude into an annular space in each quadrant of first to fourth ...

SCROLL COMPRESSOR WITH AXIAL VIBRATION PREVENTION FOR A SHAFT BEARING

PCT No. PCT/JP90/01424 Sec. 371 Date Sep. 3, 1991 Sec. 102(e) Date Sep. 3, 1991 PCT Filed Nov. 2, 1990 PCT Pub. No. WO91/06776 PCT Pub. Date May 16, 1991.In a scroll-type compressor, the revolving motion drive shaft 16, formed on the revolving end plate 12 at the side opposite to the revolving swirl blades 11, is fitted in an eccentric bearing eccentrically disposed inside of the main shaft of the crank shaft 6. The crank shaft 6 is connected to the rotor of the electric motor and is supported at the end portion thereof opposite to the main shaft by an upper bearing of a rolling type. Above the upper bearing, a rise preventing plate 24 for preventing the crank shaft 6 from excessively rising upwards is arranged in a fixed manner. The crank shaft 6 is so shaped as to have a stepped portion where the diameter of the shaft portion mounting the rotor 5 becomes stepwise greater than that of the shaft portion fitted in the upper bearing 21. Between the stepped portion and the inner race of the ...

Combined pressure ratio and pressure differential relief valve

A pressure relief device has a chamber formed in a fixed scroll of a scroll-type machine, such as a scroll compressor. A piston is housed within the chamber releasably sealingly engaging a first passage which exposes the chamber to a discharge port formed in the fixed scroll. A second passage exposes the chamber to a suction plenum. A third passage exposes the chamber to pockets formed by the fixed and orbiting scrolls of the scroll compressor. In certain preferred embodiments, a pressure relief valve having a stem and a head is housed within a cavity formed in the piston. The head is biased by a spring into releasable sealing engagement with an aperture formed in the piston. The pressure relief valve passes fluid to the suction plenum whenever the difference between a discharge pressure and a suction pressure exceeds a predetermined value. The piston passes fluid to the suction plenum whenever the ratio of discharge pressure to suction pressure exceeds a predetermined value.

Scroll compressor apparatus with separate oil reservoir vessel

A scroll compressor apparatus comprising a closed scroll compressor, an oil reservoir vessel separate from the closed scroll compressor, a discharge pipe, and an oil supply pipe. The closed scroll compressor includes a closed container having a suction port through which a compression medium is suctioned, a scroll compression mechanism encased in the closed container, a motor encased in the closed container, a first oil supply passage extending through an end plate of a fixed scroll and through which a first opening facing a sliding contact portion with an orbiting scroll is communicated with an oil supply port, a second oil supply passage formed in an end plate of the orbiting scroll and through which the first opening is communicated with a second opening facing an end face of a driving shaft, and a third oil supply passage, formed in the driving shaft, through which the second opening is communicated with the third opening facing a bearing supporting the driving shaft. A discharge port ...

Internal refrigerant gas circulation apparatus for a closed-type scroll compressor

In the case where a radial fan is provided on the upper end side of a rotor to provide an air circulating flow containing refrigerant gas so as not to hinder the flow of lubricating oil in a motor chamber, by which a motor is cooled, in order to reduce the cost of the radial fan, the radial fan is constructed by combining a plurality of blades (fan blades) ( 242 ) formed radially in the range of approximately 180° opposed to an upper balancer ( 270 ) so as to have a height smaller than the height of the upper balancer ( 270 ), and a fan cap ( 260 ) including a fan cover portion ( 262 ) covering the top faces of the blades ( 242 ) and an engagement portion ( 263 ) fixed to the upper end side of the rotor.

Compressor having capacity modulation assembly

A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region.

Oil pump for a scroll compressor

An oil pump for a compressor includes a driving shaft having an oil passage, a gear driving unit coupled to the drive shaft, a pump body having a driving shaft insertion groove, a friction reducing member assembled on the driving shaft insertion groove to reduce friction between the driving shaft and pump body, and a a gear unit coupled to the pump body and rotating with rotation of the driving shaft. The pump may further include a pump cover coupled to the pump body and having an intake for inhaling oil.

SCROLL FLUID MACHINE

The scroll-type compressor comprises a fixed scroll 320 and an orbiting scroll which are engaged with each other, a front housing 220 for accommodating the fixed scroll 320 and the orbiting scroll, and a rear housing 240 joined to the open end of the front housing 220. The fixed scroll 320 has the base plate 322 fitted into the front housing 220, and the flange 326 held at a joint surface between the front housing 220 and the rear housing 240. Additionally, at least one of the flange 326 of the fixed scroll 320 and the front housing 220 forms therein a recessed portion 326A or 220E which permits the fixed scroll 320 to be displaced in an axial direction toward the orbiting scroll due to a pressure difference acting on opposite surfaces of the base plate 322 of the fixed scroll 320.

MOLDING MATERIAL

The present invention has an objective to provide a molding material which has the improved specific strength and specific elastic modulus and which has excellent molding properties. According to the present invention, a molding material including a phenolic resin, carbon fibers, and a polyethersulfone and/or a polyetherimide is provided.

SCROLL FLUID MACHINE

In a scroll fluid machine, a fixed scroll has a fixed wrap, and an orbiting scroll has an orbiting wrap which engages with the fixed wrap to form a compressing chamber between the orbiting and fixed wraps. The orbiting scroll is rotatably mounted around an eccentric axial portion of a driving shaft and revolved by the driving shaft. A gas introduced from the outer circumference of the fixed scroll is compressed in the compressing chamber as it flows towards the center. Parts near the center is heated by a compressed gas. On the other surface of the fixed scroll to the surface having the fixed wrap, a plurality of cooling fins are provided. Air is introduced between the cooling fins to cool the machine. Between the cooling fins, a heat-releasing projection is provided to improve cooling efficiency.

Scroll compressor having a rotation inhibitor

An object is to provide a scroll compressor capable of avoiding problems caused by abnormal wear of a retaining ring used to prevent a cylindrical ring from being detached. The scroll compressor includes a crank shaft having a crank pin (6C) at a shaft end, a drive bush (10) into which the crank pin (6C) is fitted, a cylindrical ring (11) that is rotatably fitted to an outer periphery of the drive bush (10) and whose axial movement is inhibited by a retaining ring (27) mounted on the tip of the crank pin (6C), a drive bearing that is fitted to an outer periphery of the cylindrical ring (11). An orbiting scroll fitted to an outer periphery of the drive bearing is driven in an orbiting manner through the rotation of the crank shaft. A rotation inhibitor that interferes with the retaining ring (27) to inhibit the rotation of the retaining ring (27) is provided on an end surface of the drive bush (10).

Motor-driven compressor

A motor-driven compressor includes a connector to which a first and second conductors are connected, and a connector case receiving the connector. The connector case includes a first case member and a second case member. A seal member is provided between the first and second case members. The first case member has a first sealing surface extending along the periphery of the first case member. The second case member has a second sealing surface extending along the periphery of the second case member and facing the first sealing surface. The seal member includes a main seal portion for sealing between the first sealing surface and the second sealing surface. The main seal portion has a first peripheral seal portion for sealing the periphery of the first conductor inserted therethrough and has a second peripheral seal portion for sealing the periphery of the second conductor inserted therethrough.

Scroll-Type Apparatus

Scroll-type pumping apparatus comprises a stator ( 104 ) comprising a fixed scroll member ( 106 ) having an end plate with a first spiral wrap ( 118 ) extending therefrom, and an orbital scroll member ( 108 ) having an end plate with a second spiral wrap ( 120 ) extending therefrom to intermesh with the first spiral wrap ( 118 ). A motor drives a drive shaft for generating orbital movement of the orbital scroll member relative to the fixed scroll member ( 106 ). The apparatus comprises a plurality of flexible rods ( 122 ) arranged about the drive shaft and each having one end connected to the orbital scroll member ( 108 ) and another end connected to the stator ( 104 ) to support the orbital scroll member ( 108 ) relative to the stator and to inhibit rotation of the orbital scroll member.

Scroll compressor and air conditioner including a scroll compressor

A scroll compressor and an air conditioner including a scroll compressor are provided. The scroll compressor may include a casing, a fixed scroll, an orbiting scroll, and an injection passage. The fixed scroll may further include a first injection hole and a second injection hole formed on a spiral flow passage, and a third injection hole and a fourth injection hole formed on the spiral flow passage at a position inwardly rotated by about 360 degrees from the first injection hole and the second injection hole along the spiral flow passage. The first injection hole and the third injection hole may be formed on an outer lane of the spiral flow passage, and the second injection hole and the fourth injection hole may be formed on an inner lane of the spiral flow passage.

Capacity-changing unit of orbiting vane compressor

Disclosed herein is a capacity-changing unit disposed in an orbiting vane compressor, which compresses refrigerant gas introduced into a cylinder through an orbiting movement of an orbiting vane in the cylinder, for easily changing capacity of the orbiting vane compressor in a mechanical bypass fashion. The capacity-changing unit comprises a bypass channel communicating with an outer compression chamber formed in the cylinder, and a bypass valve disposed on the bypass channel for opening and closing the bypass channel. According to the present invention, the orbiting vane compressor is selectively operated not only in normal operation mode where compression is performed in an inner compression chamber as well as the outer compression chamber but also in economic operation mode where compression is performed only in the inner compression chamber.

Оil pump fоr а sсrоll соmprеssоr

Аn оil pump fоr а соmprеssоr inсludеs а driving shаft hаving аn оil pаssаgе, а gеаr driving unit соuplеd tо thе drivе shаft, а pump bоdу hаving а driving shаft insеrtiоn grооvе, а friсtiоn rеduсing mеmbеr аssеmblеd оn thе driving shаft insеrtiоn grооvе tо rеduсе friсtiоn bеtwееn thе driving shаft аnd pump bоdу, аnd а а gеаr unit соuplеd tо thе pump bоdу аnd rоtаting with rоtаtiоn оf thе driving shаft. Тhе pump mау furthеr inсludе а pump соvеr соuplеd tо thе pump bоdу аnd hаving аn intаkе fоr inhаling оil.

Оil pump fоr а sсrоll соmprеssоr

Аn оil pump fоr а соmprеssоr inсludеs а driving shаft hаving аn оil pаssаgе, а gеаr driving unit соuplеd tо thе drivе shаft, а pump bоdу hаving а driving shаft insеrtiоn grооvе, а friсtiоn rеduсing mеmbеr аssеmblеd оn thе driving shаft insеrtiоn grооvе tо rеduсе friсtiоn bеtwееn thе driving shаft аnd pump bоdу, аnd а а gеаr unit соuplеd tо thе pump bоdу аnd rоtаting with rоtаtiоn оf thе driving shаft. Тhе pump mау furthеr inсludе а pump соvеr соuplеd tо thе pump bоdу аnd hаving аn intаkе fоr inhаling оil.

ВИНТОВОЙ КОМПРЕССОР

Изобретение относится к винтовому компрессору. Винтовой компрессор содержит корпус, в котором расположены основной винт и вспомогательный винт, которые имеют соответственно вал и винтовой ротор. Вспомогательный винт в осевом направлении опирается на основной винт. Только основной винт имеет вращающуюся осевую опорную часть, которая опирается на неподвижную осевую опорную часть корпуса. За счет отсутствия упорного подшипника между вспомогательным винтом и корпусом упрощена опора вспомогательного винта. 14 з.п. ф-лы, 8 ил.

СПИРАЛЬНЫЙ КОМПРЕССОР

Изобретение относится к спиральному компрессору, предназначенному для сжатия хладагента, используемому в устройствах с холодильным циклом. Спиральный компрессор включает фиксированную и перекатывающуюся спирали, находящиеся в зацеплении друг с другом, приводной вал для привода перекатывающейся спирали, электрический двигатель, приводящий в движение приводной вал, впускные трубопровод и канал, последний из которых размещен вблизи наружной периферии фиксированной спирали, обратный клапан, размещенный во впускном канале, пружину, установленную во впускном канале и предназначенную для прижимания обратного клапана по направлению к впускному трубопроводу. Поверхность посадочного места пружины сформирована на радиально внутреннем периферическом конце впускного канала и с ней приходит в соприкосновение один из концов пружины. На поверхности посадочного места пружины сформирован выступ в сторону обратного клапана, входящий внутрь пружины. Наружный диаметр пружины в концевой части, которая приходит ...

Spiralverdichter und Herstellungsverfahren für ein Spiralelement

Exzentrisches Kupplungsstück eines Spiralverdichters

Spiralverdichter mit Dampfeinspritzung

Scroll compressor`s capacity varying apparatus for e.g. refrigerator, has sealing varying mechanism changing sealing region of orbiting and fixed scroll wraps based on change in pressure applied to back of orbiting scroll

The apparatus has a pressure control mechanism for controlling a pressure applied to a back of an orbiting scroll. A sealing varying mechanism changes a sealing region of a orbiting scroll wrap (42) and fixed scroll wrap (32) based on a change in the pressure applied to the back of the orbiting scroll. The sealing varying mechanism has sealing grooves formed on the tip faces of the fixed and orbiting scroll wraps.

VAKUUMPUMPE MIT MEHREREN WELLEN UND MIT ZYKLISCHER ÜBERTRAGUNG

Spiralverdichter mit Doppelkammer zum axialen Ausgleich

HERMETISCHER SPIRALVERDICHTER.

Kompressor-Rückschlagventil.

Motor-driven compressor

A motor-driven compressor includes a shell, an electric motor, a first conductor electrically connected to an external power source, a second conductor electrically connected to the electric motor, a connector connecting the first conductor and the second conductor and a connector case. The connector case has a first case member, a second case member, a first and a second seal members interposed between the first and the second case members, a hole through which the first conductor is inserted and a third seal member sealing between the first conductor and the connector case. A first main seal of the first seal member and a second main seal of the second seal member cooperate to form a cylindrical seal portion for sealing the second conductor that is inserted through the cylindrical seal portion when the first and the second seal members are joined.

Scroll Fluid Machine

Disclosed is a scroll fluid machine configured from inexpensive materials and provided with a rotation prevention mechanism with excellent durability. In the scroll fluid machine, a fixed scroll, the spiral body of which has been vertically disposed on one end surface of an endplate, and a movable scroll, the spiral body of which has been vertically disposed on one end surface of the endplate, are arranged eccentrically to and out of phase with each other such that the spiral bodies engage with each other and the movable scroll turns relative to the fixed scroll. The scroll fluid machine is characterized by being provided with a rotation prevention mechanism comprising a movable-side pin that protrudes from the other surface of the endplate of the movable scroll, a fixed-side pin that protrudes from the housing side towards the other surface of the endplate of the movable scroll, and a rotation prevention member held from both sides by the movable-side pin and the fixed-side pin.

Electromagnetic clutch, compressor, and manufacturing method for electromagnetic clutch

When grooves 44, 45 A and 45 B of an armature 42 and a rotor 43 are formed by laser beam machining, a metal oxide layer 100 is formed on wall surfaces defining the grooves 44, 45 A and 45 B. The metal oxide layer 100 is brought into sliding contact with a first contact surface A 1 to a fourth contact surface A 4 in a process in which an electromagnetic clutch is used, so that a part of the metal oxide layer 100 is ground and peeled off, whereby particles made of a metal oxide are produced. The particles enter the contact surface between the armature 42 and the rotor 43 , which increases the frictional force therebetween to thereby prevent slippage. As a result, the torque transmission capability of the electromagnetic clutch M is enhanced, and the increase in the torque of a scroll compressor is achieved.

Counterweight incorporated into slider block for scroll compressor

A slider block has an inner bore which receives an eccentric pin, and a generally flat drive surface over a limited circumferential extent to be engaged by a flat drive surface on an eccentric pin. A counterweight is positioned on an outer periphery of the slider block. The counterweight has a center line defining a first plane. A second plane is defined parallel to the first plane, with the second plane including a point on the flat drive surface of the slider block, with the flat drive surface of the slider block including a third plane, and a non-zero angle defined between the second and third planes.

Scroll compressor

A scroll compressor is provided that may include a fixed scroll having a fixed wrap, an orbiting scroll engaged with the fixed wrap to define a compression chamber, a rotation shaft having a shaft portion eccentrically located with respect to the orbiting scroll, a pin portion located at an end of the shaft portion and having a diameter smaller than a diameter of the shaft portion, and a bearing located at an end of the pin portion, and a drive that drives the rotation shaft. The pin portion may be inserted through one of the fixed scroll or the orbiting scroll, and the orbiting scroll may be rotatably coupled to the bearing.

Compressor and enclosure assembly for electrical components

A compressor electrical component enclosure may include a base and a lid. The base may include first and second opposing surfaces and a magnet. The magnet may be coupled to the second surface and may secure the base to a compressor shell. The lid may engage the base and cooperate with the base to define an electrical component housing.

Scroll compressor

A scroll compressor includes fixed and movable scrolls, each scroll having a spiral lap placed on one surface of a plate. The lap of the fixed scroll and the lap of the movable scroll are interlocked to form a compression chamber between the laps of the scrolls which are adjacent to each other. At least one of the laps has a spiral shape in which a base radius of an involute decreases as a winding angle increases in a region extending from a winding start part to a winding middle part, and the base radius of the involute in a region extending from the winding middle part to a winding end part is larger than the smallest value of the base radius of the involute in the region extending from the winding start part to the winding middle part.

Compressor and Refrigerating Cycle Apparatus

In a conventional compressor, since a motor and a mechanical section of the compressor are disposed in one and the same closed container, the motor is exposed to high-temperature coolant and heated, and the efficiency of the motor is lowered. Further, during the operation of the compressor, the coolant circulating in the refrigerating cycle conveys additional heat generated by the motor coil. Thus the efficiency of the refrigerating cycle is lowered. The compressor according to the present invention includes a compression chamber divided into a closed chamber and an open chamber separated by a magnetic induction plate from each other. The closed chamber is filled with high temperature and pressure coolant and the rotor of the motor is disposed in the closed chamber, and the stator of the motor is disposed in the open chamber.

Scroll-Type Fluid Machine

A scroll-type fluid machine reduces intrusion of abrasion powders, generated by sliding of a conductor causing an orbiting scroll side and a fixed scroll side to be conducted, into a compression chamber, and improves reliability of a compressor. The scroll-type machine includes a casing, a fixed scroll having a flange surface attached to the casing, and a wrap portion provided at an end plate, an orbiting scroll having a wrap portion provided at the end plate, and provided in an opposed relationship with the fixed scroll, a drive shaft connected through a crank portion to the orbiting scroll, an orbiting bearing, a face seal portion arranged between the orbiting scroll and the fixed scroll, a cooling fan, and an orbiting scroll side conductive brush.

Motor-driven compressor

A securing means for an insulating member that is advantageous in improving the efficiency of assembly of a motor-driven compressor is provided. Phase wires extending from an end face of a stator core, which is closer to a compression mechanism, are bound to form a phase wire bundle. The distal ends of the phase wires are electrically connected together, so that a wire connecting portion is formed at the distal end of the phase wire bundle. The wire connecting portion, which serves as a neutral point, is coated with an insulating tube made of insulating plastic. The distal end of the insulating tube is sealed. A receiving hole is formed in the cluster block. The insulating tube is fitted in the receiving hole and secured to the cluster block by contacting an inner surface of the receiving hole.

Scroll compressor

A scroll compressor including a fixed scroll having a fixed wrap; and an orbiting scroll having an orbiting wrap engaged with the fixed wrap to form compression chambers, and performing an orbital motion with respect to the fixed scroll, wherein at least one of the fixed wrap and the orbiting wrap has a first constant section, a variable section, and a second constant section consecutively formed in a direction from a wrap final end to a wrap initial end.

Scroll compressor

A scroll compressor ( 10 ) comprising a scroll pumping mechanism having two co-operating scrolls ( 14,16 ) mounted within a pump housing ( 18 ) so that on relative orbital movement of the scrolls fluid is pumped from a pump inlet ( 20 ) in the pump housing to a pump outlet ( 22 ) in the pump housing. The scroll compressor ( 10 ) further comprises a filter ( 24 ) located within the pump housing ( 18 ) along a fluid flow path ( 26 ) between the pump inlet ( 20 ) and the scroll pumping mechanism ( 12 ) for resisting the passage of particulates ( 28 ) upstream of the compressor.

Hermetic electric compressor

An object is to provide a hermetic electric compressor that can simplify the installation structure of an internal protector and improve the ease-of-assembly thereof. In a hermetic electric compressor having a compressor and an electric motor ( 10 ) built into a sealed housing ( 2 ), the electric motor ( 10 ) includes a stator ( 8 ) to which plastic insulating bobbins ( 30 ) having flanges ( 30 B, 30 C) on an inner and outer circumferences of a plurality of tooth parts of a stator core are fitted and around which a stator winding wire ( 8 A) is wound in concentrated winding around the plastic insulating bobbins ( 30 ), and an internal protector ( 29 ) for electric-motor protection is latched between the inner and outer circumferential flanges ( 30 B, 30 C) of the plastic insulating bobbins ( 30 ) by being urged against the stator winding wire ( 8 A).

Scroll compressor

The present disclosure relates to a scroll compressor. According to the present disclosure, in a shaft penetration scroll compressor in which an eccentric portion of the rotation shaft is overlapped with a orbiting wrap of the orbiting scroll in a radial direction, a back pressure chamber formed at a rear surface of the orbiting scroll may be eccentrically formed from the circular center around a discharge port to correspond to the eccentric discharge port, thereby effectively preventing tilting of the orbiting scroll due to the eccentricity of a gas force generated while the discharge port is eccentrically formed.

Scroll compressor

The present disclosure relates to a scroll compressor. According to the present disclosure, an oldham ring for preventing the rotation movement of a orbiting scroll may be fabricated by sintering metal powder to have a yield stress above 300 MPa, and thus even when a gas force is eccentrically generated it may be possible to prevent the oldham ring supporting the circular movement of the orbiting scroll from being damaged due to this, thereby enhancing the compressor performance.

Motor-driven compressor

A motor-driven compressor includes a compression mechanism compressing refrigerant gas, an electric motor driving the compression mechanism, a housing made of a thermally conductive material and accommodating the compression mechanism and the electric motor and an inverter assembly controlling rotation of the electric motor. The inverter assembly includes an elastic member made of a thermally conductive material and disposed in contact with the housing, a circuit board supported directly by the elastic member, an electronic part mounted on the circuit board and a base member made of a thermally conductive material, fixed to the housing and having a closed end. The base member fixes the electronic part. The base member and the housing cooperate to form an accommodation space that accommodates the elastic member, the circuit board and the electronic part. The closed end of the base member and the elastic member forms therebetween a space.

SCROLL COMPRESSOR

A scroll compressor employs therein a refrigerant having a small global warming potential and a small ozone depletion potential and mainly comprising hydrofluoroolefin having a carbon-carbon double bond. A stationary scroll has and end plate and a discharge port defined in the end plate at a central portion thereof so as to open into a discharge chamber. The stationary scroll also has a bypass hole defined in the end plate to allow a plurality of compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port. A check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge chamber. This construction can restrain a baneful influence on the global environment, reduce a temperature increase caused by excessive compression, and restrain decomposition of the refrigerant even in long-term use. 1. A scroll compressor employing therein a single-component refrigerant mainly comprising hydrofluoroolefin having a carbon-carbon double bond or a mixture refrigerant containing this refrigerant , the scroll compressor comprising:a stationary scroll having a stationary end plate and a stationary scroll wrap rising up from the stationary end plate, the stationary end plate having a discharge port defined therein at a central portion thereof so as to open into a discharge chamber; andan orbiting scroll having an orbiting end plate and an orbiting scroll wrap rising up from the orbiting end plate, the orbiting scroll being held in engagement with the stationary scroll to define a plurality of compression chambers therebetween, whereinthe stationary end plate has a bypass hole defined therein to allow the compression chambers to communicate with the discharge chamber before the compression chambers communicate with the discharge port, anda check valve is provided on the bypass hole to allow the refrigerant to flow from the compression chambers to the discharge ...

Scroll compressor

A scroll compressor may include a blocking portion provided in a fixed component thereof, and positioned adjacent to a discharge hole formed in an orbiting scroll of the compressor. The blocking portion may temporarily obscure the discharge hole upon initiation of a discharging operation, thereby preventing refrigerant discharged into a discharging space from flowing back into a compression chamber, without the use of a separate check valve. Such a blocking portion may prevent an increase in overall compressor noise due to noise typically generated by a check valve. Such a blocking portion may also prevent degradation in compressor reliability levels due to valve damage and increases in fabricating costs due to the addition of the valve.

Scroll compressor

A scroll compressor is provided. The scroll compressor may include a communication hole formed in a fixed scroll for communicating a discharge space and a thrust bearing surface with each other. This may reduce frictional loss between the fixed scroll and an orbiting scroll. Further, if a high vacuum state is about to occur during operation of the compressor, refrigerant in the discharge space may be introduced into the compression chambers through the communication hole. This may prevent the occurrence of a high vacuum state to thereby prevent damage to the compressor. Additionally, when the compressor is stopped, a pressure equilibrium operation may be performed through the communication hole.

ROTARY COMPRESSOR AND MANUFACTURING METHOD THEREOF

A rotary compressor having a reduced vibration and noise thereof, and capable of minimizing the deformation of components to improve the performance and the reliability, thereby providing applications for various fields other than for an air conditioner 1. A rotary compressor , comprising:a case forming an external appearance of the rotary compressor;a driving portion provided at an inner side of the case, and having a stator fixed to the case, a rotator rotatively provided at an inside the stator, and a rotary shaft that is press-fitted to the rotator;a compression portion provided at an inner side of the case, and having an eccentric portion provided at a lower portion of the rotary shaft, a roller rotatively inserted into an outer side of the eccentric portion, a cylinder accommodating the roller and provided for a compression chamber to be formed therein, and a vane configured to divide the compression chamber;a fastening member configured to connect the driving portion to the compression portion; anda supporting member configured to connect the compression portion to the case to support the compression portion.2. The rotary compressor of claim 1 , wherein the supporting member comprises a first elastic member to support the compression portion claim 1 , and a second elastic member to connect the fastening member to the case.3. The rotary compressor of claim 1 , wherein the supporting member is a damper configured to couple the fastening member to the case and to absorb vibration.4. The rotary compressor of claim 1 , further comprising:an upper portion bearing coupled to an upper portion of the cylinder and configured to support the rotary shaft, and a lower portion bearing coupled to a lower portion of the cylinder and configured to support the rotary shaft, andone of both sides of the fastening member is coupled to the stator of the driving portion.5. The rotary compressor of claim 4 , wherein the other side of the fastening member is coupled to the upper ...

COMPRESSOR FOR VEHICLE

With regard to a scroll compressor, a compression portion is rotatably connected with one end portion of a rotating shaft. A first shaft portion formed at one end portion of the rotating shaft is supported through a first bearing by a partition. A second shaft portion formed at the other end portion of the rotating shaft is supported through a second bearing by a cylindrical shaft support. A coil spring is interposed between a second inner race of a second bearing and a spring receiving portion of the rotating shaft which faces the second inner race in the shaft direction of the rotating shaft. The structure reduces vibration toward the shaft length direction of the rotating shaft and minimizes common vibrations together with vehicle side vibrations. 1. A compressor for vehicle including a housing , a compression portion located in the housing;', 'a rotary shaft connected with the compression portion at one end;', a first shaft portion and a second shaft portion formed at both ends of the rotary shaft;', 'wherein the first shaft portion is formed between the compression portion and the motor, and is supported by a first bearing,', 'wherein the second shaft portion is formed between the motor and the housing, and is supported by a second bearing,', 'wherein a coil spring is installed between either one of the first bearing or the second bearing and either one of the rotary shaft or the housing opposing one of the bearings in the axial direction of the rotary shaft., 'a motor driving the compression portion through the rotary shaft; and'}], 'the compressor comprising2. The compressor for vehicle according to claim 1 , wherein the coil spring is wound around the second shaft portion claim 1 ,wherein the rotary shaft forms a spring supporting portion and the diameter of which is greater than that of the second shaft portion,wherein the second bearing includes an inner race,wherein the coil spring is installed between the inner race of the second bearing and the spring ...

Scroll fluid machine

A disc-like spacer arranged below a first roller bearing rotatably supporting a driven crankshaft that forms an anti-rotation system is formed with a plurality of notches in the circumferential direction. A spot face is provided to face the outer circumferential surface of the spacer, and communication holes and are drilled on the outer circumferential side of the spot face to extend in the axial direction of the scroll. Also formed is a communication hole communicating the communication hole with the first roller bearing via the notches. A grease nipple is mounted to the communication hole. To replenish grease, the fixed scroll is removed from the housing such that the orbiting scroll is exposed, and grease is injected from the grease nipple into the first roller bearing with a grease gun.

Compressor protection and diagnostic system

A compressor diagnostic device is provided and includes at least one of a temperature sensor and a current sensor. The current sensor measures a first current flow through a motor of a refrigerant compressor. The temperature sensor is disposed within and sensing a temperature of a measurement region of an electrical conductor that is configured to close and open to allow and prevent current flow to the motor, respectively. The compressor diagnostic device also includes a controller in communication with the at least one of the current sensor and the temperature sensor. The controller is operable to control the electrical conductor based on a comparison of a second current flow through the motor and a maximum current.

Oil injection device for variable-speed scroll refrigeration compressor

The oil injection device according to the invention includes an oil pump designed to be rotationally coupled to the electric motor of a compressor and including inlet and outlet ports, an oil injection duct connected to the first outlet port and designed to supply a compression stage of the compressor with oil, and an oil return duct connected to the first outlet port and designed to return the oil into an oil sump of the compressor. The pressure losses in the oil injection duct are primarily singular pressure losses proportional to the square of the oil flow rate passing through the oil injection duct. The pressure losses in the oil return duct are primarily pressure losses due to friction proportional to the oil flow rate passing through the oil return duct.

SCROLL COMPRESSOR

In a scroll compressor of the present invention, a fixed scroll and an orbiting scroll are meshed with each other such that spiral laps of the fixed scroll and the orbiting scroll inwardly face each other, an Oldham ring is provided between the main bearing member and the orbiting scroll and a key portion of the Oldham ring is inserted into a key groove of the main bearing member Grooves are formed in Oldham ring sliding surfaces on both sides of the key groove . According to this configuration, the Oldham ring and the main bearing member can be restrained from coming into contact with each other in the vicinity of the bearing key groove , and restrained from vibrating, and it is possible to provide an inexpensive scroll compressor of low noise. 1. A scroll compressor in which an orbiting scroll is provided between a main bearing member and a fixed scroll ,the fixed scroll and the orbiting scroll are meshed with each other such that spiral laps of the fixed scroll and the orbiting scroll inwardly face each other,an Oldham ring is provided between the main bearing member and the orbiting scroll, anda key portion of the Oldham ring is inserted into a key groove of the main bearing member, whereingrooves are formed in Oldham ring sliding surfaces on both sides of the key groove.2. The scroll compressor according to claim 1 , wherein a portion of each of the grooves in a sliding direction of the Oldham ring has a slope shape.3. The scroll compressor according to claim 1 , wherein relief grooves are formed in both sides of the key portion claim 1 , and the grooves are separated from the key groove.4. The scroll compressor according to claim 1 , wherein the grooves are laterally symmetrically formed in ranges of 60% or less of a diameter of the Oldham ring with respect to the key groove.5. The scroll compressor according to claim 1 , wherein the grooves are laterally symmetrically formed in ranges of 45° or less on left and right sides with respect to the key groove. The ...

ROTARY COMPRESSOR WITH DUAL ECCENTRIC PORTION

A rotary compressor including two eccentric portions is provided. The rotary compressor includes: a casing; a cylinder provided within the casing and providing a compression space; a rotational shaft rotatably disposed with respect to the cylinder; a partition plate rotating together with the rotational shaft and dividing the compression space of the cylinder into first and second compression chambers disposed up and down; first and second eccentric portions provided in upper and lower portions of the partition plate and being eccentric in different directions with respect to a rotation center of the rotational shaft so as to rotate together with the rotational shaft; and a driving motor rotatably driving the rotational shaft. 1. A rotary compressor comprising:a casing;a cylinder disposed within the casing and providing a compression space;a rotational shaft rotatably disposed with respect to the cylinder;a partition plate rotating together with the rotational shaft and dividing the compression space of the cylinder into first and second compression chambers disposed up and down;first and second eccentric portions provided in upper and lower portions of the partition plate and being eccentric in different directions with respect to a rotation center of the rotational shaft so as to rotate together with the rotational shaft; anda driving motor rotatably driving the rotational shaft.2. The rotary compressor of claim 1 , wherein the first and second eccentric portions are eccentric in the opposite directions with respect to the center of the rotation shaft.3. The rotary compressor of claim 1 , further comprising:two vanes disposed in the first and second compression chambers to divide the same.4. The rotary compressor of claim 3 , wherein the vanes are disposed such that end portions of outer circumferential portions thereof are in contact with outer circumferential portions of the first and second eccentric portions.5. The rotary compressor of claim 3 , further ...

SCROLL COMPRESSOR

A scroll compressor includes a high-pressure space capable of communicating with a discharge port and a back pressure space capable of communicating with an intermediate port. A fluid passage includes a seal ring that closes the fluid passage when the pressure of the back pressure space is lower than that of the high-pressure space, and opens the fluid passage when the pressure of the back pressure space is higher than that of the high-pressure space. 1. A scroll compressor , comprising:a casing;a rotary compression mechanism housed in the casing, and including a compression chamber formed by engaging a fixed scroll and an orbiting scroll with each other;a discharge port located in the compression mechanism and being open at a discharge position of the compression chamber;an intermediate port located in the compression mechanism and being open at an intermediate position of the compression chamber;a forming member located in the casing and including a back pressure space and at least part of a fluid passage, the back pressure space facing a back surface of the orbiting scroll and communicating with the intermediate port, the fluid passage allowing a high-pressure space communicating with the discharge port and the back pressure space to communicate with each other; andan opening/closing mechanism configured to close the fluid passage when a pressure of the back pressure space is lower than that of the high-pressure space, and open the fluid passage when the pressure of the back pressure space is higher than that of the high-pressure space.2. The scroll compressor of claim 1 , whereinthe opening/closing mechanism is held by a ring groove that is open to the fluid passage of the forming member,the opening/closing mechanism is configured to freely expand and contract between an inner peripheral wall and an outer peripheral wall of the ring groove,the opening/closing mechanism is constituted by a seal ring including: an outer peripheral sealing surface that seals a gap ...

Motor-driven compressor and hermetic sealing inspection method for the same

A motor-driven compressor includes a compression mechanism compressing and discharging fluid, an electric motor driving the compression mechanism, a drive circuit controlling the electric motor, a drive circuit chamber accommodating the drive circuit and a hermetic sealing inspection port that allows the drive circuit chamber to be in communication with the outside thereof. The hermetic sealing inspection port includes a valve opening and closing the hermetic sealing inspection port. The drive circuit chamber can be pressurized or depressurized through the hermetic sealing inspection port. The hermetic sealing inspection is conducted by connecting an outside fluid machine to the hermetic sealing inspection port through a detachable tube. The fluid machine is operated so as to depressurize or pressurize the drive circuit chamber through the hermetic sealing inspection port. The pressure in the drive circuit chamber is measured by a pressure meter provided in the tube.

Scroll compressor

A scroll compressor configured in such a manner that a back pressure chamber is formed on the back surface side of the movable scroll using an annular seal means, and pressurized fluid is introduced into the back pressure chamber through a pressure introduction hole. A thrust bearing member which is a separate member from the seal means and bears a thrust force acting toward the main bearing member from the bottom plate section side of the movable scroll is disposed between the back surface of the bottom plate section of the movable scroll and the front surface of the main bearing member which faces the back surface of the bottom plate section. The scroll compressor is configured in such a manner that the scroll compressor can satisfy the demand for more compactness and that a reduction in the durability and sealing function of the annular seal means can be minimized.

Scroll Compressor and Air Conditioner

A compressor is provided with a fixed scroll having a spiral lap erected on a bed plate; an orbiting scroll having a spiral lap erected on a panel and forming a compression room meshed with the fixed scroll; and an orbiting bearing disposed penetrating the panel and the central part of the lap of the orbiting scroll, wherein a lap center is so shifted from a panel center out of alignment in a direction in which, within a range in which the orbiting bearing can be formed in the central part of the lap, the longer of the minimum distance between the lap winding end position of the orbiting scroll and the outer circumference of the panel and the minimum distance between the outermost circumferential part and the outer circumference of the panel in an approximately 90° direction of becomes the shortest distance. 1. A scroll compressor comprising:a fixed scroll having a spiral lap erected on a bed plate;an orbiting scroll having a spiral lap erected on a panel and forming a compression room meshed with the fixed scroll; andan orbiting bearing disposed penetrating the panel and the central part of the lap of the orbiting scroll, wherein:the orbiting scroll is formed in such a manner as to so shift a lap center from a panel center out of alignment, when the panel center and the lap center are in the same state, as to bring the minimum distance between a winding end position of the lap of the orbiting scroll and the outer circumference of the panel close to the minimum distance between the outer circumferential part which, out of the outer circumferential parts of the lap in a direction of 45° to 135° with the center of the panel from the lap winding end position of the orbiting scroll as its center, has the longer of the minimum distances to the outer circumference of the panel.2. The scroll compressor as claimed in claim 1 , wherein:the orbiting scroll is formed in such a manner as to so shift a lap center from a panel center out of alignment, when the panel center and ...

SCROLL-TYPE FLUID MACHINE

Provided is a scroll-type fluid machine which can reduce deformation of a rotary scroll caused when fixing a bearing into a boss part. A scroll compressor, in which a sealed chamber confining a fluid is formed by a fixed scroll and the rotary scroll meshed together, each of the scrolls having a spiral wall erected on one side face of an end plate, includes: a metallic boss part (C) protruding from the other side face of the end plate of the rotary scroll; a metallic rotary bearing () inserted into the boss part (C); a crankshaft rotating around an axis and including a bush part inserted in the rotary bearing () and rotatably supported by the rotary bearing (); and an insert member () disposed between the boss part (C) and the rotary bearing () and having a thermal expansion coefficient greater than those of the boss part (C) and the rotary bearing (). 1. A scroll-type fluid machine , in which a sealed chamber confining a fluid is formed by a fixed scroll and a rotary scroll meshed together , each of the scrolls having a spiral wall erected on one side face of an end plate , the scroll-type fluid machine comprising:a metallic boss part protruding from the other side face of the end plate of the rotary scroll;a metallic bearing inserted into the boss part;a crankshaft rotating around an axis and including a bush part inserted in the bearing and rotatably supported by the bearing; andan insert member disposed between the boss part and the bearing and having a thermal expansion coefficient greater than those of the boss part and the bearing.2. The scroll-type fluid machine according to claim 1 , whereinthe insert member has a ring shape and is disposed along an inner face of the boss part. The present invention relates to a scroll-type fluid machine in which a sealed chamber confining a fluid is formed by a pair of fixed scroll and rotary scroll meshed together.A scroll compressor, in which a compression chamber is formed by a pair of fixed scroll and rotary scroll ...

Compressor

A compressor includes a housing, compression unit, discharge chamber, outlet, and oil separation structure. The oil separation structure, which is arranged between the discharge chamber and the outlet, includes an oil reservoir, oil separation compartment, intake passage, exhaust passage, and supply passage. The oil separation compartment is located upward from the oil reservoir. The intake passage, which extends upward from the oil separation compartment, draws refrigerant gas into the oil separation compartment from the discharge chamber to separate lubrication oil from the refrigerant gas. The exhaust passage extends upward from the oil separation compartment and discharges the refrigerant gas in the oil separation compartment out of the housing through the outlet. The supply passage extends upward from the oil separation compartment and has a larger cross-sectional area than the intake passage. The supply passage supplies the oil reservoir with lubrication oil from the oil separation compartment.

Motor-driven compressor

A motor-driven compressor includes an electric motor, a compression mechanism driven by the electric motor to compress refrigerant, a housing accommodating the electric motor and the compression mechanism, and a support having a mounting to be fastened to an object by a fastener. One of the housing and the support has a projection and the other of the housing and the support has a recess that is engaged with the projection through a vibration damper so that the support supports the housing.

Suction duct with stabilizing ribs

A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.

METHOD AND APPARATUS FOR SCROLL ALIGNMENT

A compressor may include a shell, a bearing housing supported within the shell, an orbiting scroll, a non-orbiting scroll meshingly engaged with the orbiting scroll, fasteners and a drive shaft. The bearing housing may include a central body defining a bore and arms extending radially outward from a central body and defining circumferentially extending grooves. The circumferentially extending grooves may include inner side walls, outer side walls and base regions extending regionally between the inner and outer side walls and defining fastener receiving apertures. The orbiting scroll may be supported on the bearing housing and a non-orbiting scroll may be meshingly engaged with the orbiting scroll and may include flanges defining flange apertures. The fasteners may extend through the flange apertures and the fasteners receiving apertures and secure the non-orbiting scroll to the bearing housing. The drive shaft may extend through the bore and be engaged with the orbiting scroll. 1. A compressor comprising:a shell; a central body defining a bore; and', 'arms extending radially outward from said central body and defining circumferentially extending grooves including inner side walls, outer side walls and base regions extending radially between said inner and outer side walls and defining fastener-receiving apertures;, 'a bearing housing supported within said shell and includingan orbiting scroll supported on said bearing housing;a non-orbiting scroll meshingly engaged with said orbiting scroll and including a flange defining flange apertures;fasteners extending through said flange apertures and said fastener-receiving apertures and securing said non-orbiting scroll to said bearing housing; anda drive shaft extending through said bore and engaged with said orbiting scroll.2. The compressor of claim 1 , wherein said grooves are each arc-shaped with open circumferential ends.3. The compressor of claim 1 , wherein said circumferentially extending grooves are concentric to ...

ELECTRIC COMPRESSOR AND ASSEMBLY METHOD THEREFOR

An electric compressor includes a compression unit that compresses a refrigerant; an electric motor that is coupled with the compression unit via a main shaft; a housing that accommodates the compression unit and the electric motor; an end-side bearing holding part that is provided near an axial end of the housing closer to the electric motor; and a rolling bearing that has an outer ring press-fitted into the end-side bearing holding part and an inner ring into which an end of the rotating shaft is press-fitted, and that supports the main shaft, in which an opening into which an assembly jig for supporting the rolling bearing when the main shaft is press-fitted into the inner ring can be inserted and removed is provided in an end surface of the housing near the end-side bearing holding part. 1. An electric compressor comprising:a compression unit that compresses a refrigerant;an electric motor that is coupled with the compression unit via a rotating shaft;a housing that accommodates the compression unit and the electric motor;an end-side bearing holding part that is provided near an axial end of the housing closer to the electric motor; anda rolling bearing that has an outer ring that is press-fitted into the end-side bearing holding part and an inner ring into which an end of the rotating shaft is press-fitted, and that supports the rotating shaft,wherein an opening into which an assembly jig for supporting the rolling bearing when the rotating shaft is press-fitted into the inner ring can be inserted and removed is provided in an end surface of the housing near the end-side bearing holding part.2. An electric compressor according to claim 1 , wherein a bolt is screwed into the opening so as to block the opening.3. An electric compressor according to claim 1 , wherein a blocking plate is provided so as to block the opening claim 1 , with a sealing member interposed therebetween.4. An electric compressor comprising:a compression unit that compresses a refrigerant;an ...

SCROLL FLUID MACHINE

A scroll fluid machine includes a revolving scroll in which a revolving wrap stands upright on an end plate supported revolvably on a drive shaft, and a fixed scroll which is provided opposite the revolving scroll and in which a fixed wrap stands upright on an end plate. The revolving and fixed wraps overlap to form a compression chamber for compressing a fluid by causing the revolving scroll to revolve. The scroll fluid machine further includes a rod-shaped member attached to the end plate of the revolving scroll and extending to a rear surface side of the fixed scroll, which is a side not opposing the revolving scroll. A revolving plate is attached to the rod-shaped member, provided with a pin crank mechanism, and supported revolvably on the drive shaft. The revolving plate is provided with a sealing unit that seals the compression chamber in an axial direction. 1. A scroll fluid machine comprising a revolving scroll in which a revolving wrap stands upright on an endplate supported revolvably on a drive shaft , and a fixed scroll which is provided opposite the revolving scroll and in which a fixed wrap stands upright on an end plate , wherein the revolving wrap and the fixed wrap are overlapped so as to form a compression chamber for compressing a fluid by causing the revolving scroll to revolve , the scroll fluid machine further comprising:a rod-shaped member that is attached to the end plate of the revolving scroll and extends to a rear surface side of the fixed scroll, which is a side not opposing the revolving scroll; anda revolving plate that is attached to the rod-shaped member, provided with a pin crank mechanism, and supported revolvably on the drive shaft,the revolving plate being provided with a sealing unit that seals the compression chamber in an axial direction.2. The scroll fluid machine according to claim 1 , wherein the sealing unit is a bellows provided between the rear surface side of the fixed scroll and the revolving plate claim 1 , andthe ...

SCROLL REFRIGERATION COMPRESSOR

The scroll refrigeration compressor includes a stationary volute and a moving volute provided with spiral wraps defining variable-volume compression chambers, a separating member sealably mounted on a plate of the stationary volute so as to allow a relative movement between the separating member and the stationary volute, a delivery chamber at least partially defined by the separating member and the sealed casing. The compressor further includes a bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber, and a anti-return device comprising a closing member movable between closing and opening positions for closing and opening the bypass passage, and an enclosure, positioned between the separating member and the plate of the stationary volute, including a first portion sealably mounted in a housing defined by the separating member and oriented substantially parallel to the longitudinal axis of the compressor. 1. A scroll refrigeration compressor comprising:a sealed casing containing a stationary volute and a moving volute following an orbital movement, each volute including a plate from which a spiral wrap extends, the spiral wraps of the stationary and moving volutes being engaged in one another and defining variable-volume compression chambers,a separating member sealably mounted on the plate of the stationary volute so as to allow a relative movement between the separating member and the stationary volute in a direction substantially parallel to the longitudinal axis (A) of the compressor, the separating member and the plate of the stationary volute delimiting an intermediate volume,a delivery chamber at least partially defined by the separating member and the sealed casing,wherein the compressor further comprises:at least one bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber,at least one anti-return device of a first type associated with a bypass passage, each anti- ...

Compressor having a lower frame and a method of manufacturing the same

A compressor having a lower frame and a method of manufacturing the same are disclosed. The compressor may include a cylindrical shell, a rotational shaft rotatably mounted in the cylindrical shell, a rotor and a stator that rotates the rotational shaft, a compression device driven by the rotational shaft, a lower bearing configured to rotatably support one side of the rotational shaft, a lower frame configured to support the lower bearing, the lower frame being configured to be press-fitted into a lower end portion of the cylindrical shell, and a base configured to seal the lower end portion of the cylindrical shell. The lower frame may include a main body configured to be press-fitted onto an inner circumferential surface of the cylindrical shell and a flange that extends from the main body, the flange being configured to limit a press-fit depth by contacting the lower end portion of the cylindrical shell.

Scroll refrigeration compressor

The scroll compressor includes stationary and moving scrolls each including a scroll plate provided with a spiral wrap, the spiral wraps defining the variable-volume compression chambers, a separating plate mounted on the scroll plate of the stationary scroll and defining with the latter a first intermediate volume, and a delivery chamber defined by the separating plate and the sealed casing. The compressor includes a bypass passage arranged to communicate the first intermediate volume with an intermediate compression chamber, a flow passage arranged to communicate the first intermediate volume with the delivery chamber, and a bypass valve associated with the flow passage, each bypass valve associated with a flow passage mounted on the surface of the separating plate turned toward the delivery chamber and movable between closing and opening positions for closing and opening the flow passage.

Thrust plate for a horizontal scroll compressor and a horizontal scroll compressor having the same

A thrust plate for a compressor may include first and second ends and a feed hole. The first end may include a thrust surface. The second end may include a lubricant accumulation feature. The feed hole may extend between the lubricant accumulation feature and the thrust surface to provide communication therebetween. The feed hole may be angled relative to a longitudinal axis of the thrust plate such that lubricant flows through the feed hole from the lubricant accumulation feature to the thrust surface.

Scroll compressor

A scroll compressor includes an oil recollecting pump for recollecting oil discharged from a shell, thus to effectively recollect oil discharged out of the compressor. A differential pressure hole is formed at a position where it communicates with compression chambers after a suction completion timing such that oil stored in an inner space of the shell can be supplied into the compression chambers using pressure difference between the high-pressure inner space of the shell and the low-pressure compression chambers, resulting in allowing oil to be smoothly supplied to a compression unit even during low-speed driving of the compressor and preventing beforehand an occurrence of a suction loss due to oil.

Scroll Compressor

A scroll compressor contains a suction chamber and a compression chamber formed between the orbiting scroll and stationary scroll; and the rear surface of the orbiting scroll includes a back pressure chamber to apply a pressing force for pressing the stationary scroll to the orbiting scroll by the pressure higher than the pressure in the suction chamber. The stationary scroll contains the communication paths to connect the suction chamber or the compression chamber and the back pressure chamber; and a back pressure control means for opening and closing the communication paths by way of the pressure differential along the communication paths. The inlet communication path that extends from the back pressure control means to the back pressure chamber includes at least two or more path cross-sectional areas. The cross-sectional area of an inlet communication path on the back pressure chamber side of this inlet communication path is formed larger than the cross-sectional area of an inlet communication path on the back pressure control means side. Moreover, the opening surface area of the back pressure chamber side of the communication path is configured so as to be constantly equal to or smaller than the cross-sectional area of the communication path so that a section of the back pressure chamber side opening of the communication path is constantly blocked by the base plate of the orbiting scroll, and in this way a highly efficient and highly reliable scroll compressor is achieved. 1. A scroll compressor comprising a crankshaft to mutually engage a stationary scroll having a whirlpool shape on a base plate and an orbiting scroll , and drive the orbiting scroll; a suction chamber and a compression chamber formed between the orbiting scroll and the stationary scroll by the orbital motion of the orbiting scroll accompanying the rotation of the crankshaft; and a back pressure chamber included on the back surface of the orbital scroll to apply a pressing force for pressing ...

SCREW COMPRESSOR

A scroll compressor includes a compression mechanism having a fixed scroll and an orbiting scroll. The fixed scroll includes a first end plate, an outer peripheral wall extending from an edge of first end plate, a first oil groove, and a first wrap inside of the outer peripheral wall. The orbiting scroll includes a second end plate in sliding contact with an end of the first wrap and an end of the outer peripheral wall, a second oil groove, and a second wrap. The first oil groove is disposed on a surface of the outer peripheral wall, extends along an inner periphery of the outer peripheral wall, and is configured to receive lubricating oil at a high pressure corresponding to a discharge pressure of the compression mechanism. The second oil groove is disposed on a surface of the second end plate, and is communicatable with the first oil groove. 1. A scroll compressor , comprising: [ a first end plate,', 'an outer peripheral wall extending from an edge of the first end plate,', 'a first oil groove, and', 'a first wrap extending from the first end plate inside of the outer peripheral wall; and, 'a fixed scroll including'}, a second end plate in sliding contact with an end of the first wrap and an end of the outer peripheral wall,', 'a second oil groove, and', 'a second wrap extending from the second end plate,, 'an orbiting scroll including'}, disposed on a surface of the outer peripheral wall of the fixed scroll in sliding contact with the second end plate of the orbiting scroll,', 'extending along an inner periphery of the outer peripheral wall, and', 'configured to receive lubricating oil at a high pressure corresponding to a discharge pressure of the compression mechanism, and, 'the first oil groove the fixed scroll'}, 'communicatable with the first oil groove of the fixed scroll.', 'the second oil groove of the orbiting scroll disposed on a surface of the second end plate of orbiting scroll in sliding contact with the outer peripheral wall of the fixed scroll, and ...

PISTON AND SCROLL COMPRESSOR ASSEMBLY

A compressor is provided and may include a shell, a motor assembly, a drive shaft, a first compression mechanism, and a second compression mechanism. The motor assembly may be disposed within the shell. The drive shaft may be powered by the motor assembly. The first compression mechanism may be disposed within the shell and may be driven by the motor assembly. The second compression mechanism may be driven by the motor assembly. 1. A compressor comprising:a shell;a motor assembly disposed within said shell;a drive shaft powered by said motor assembly;a first compression mechanism disposed within said shell and driven by said motor assembly, said first compression mechanism including a first member orbiting relative to a second member to compress a fluid therebetween; anda second compression mechanism driven by said motor assembly and including a third member reciprocating relative to a fourth member to compress said fluid therebetween.2. The compressor of claim 1 , wherein said first and second members include first and second interleaving scroll members.3. The compressor of claim 2 , wherein said third member includes a piston and said fourth member includes a cylindrical bore claim 2 , the piston reciprocating relative to said cylindrical bore.4. The compressor of claim 3 , further comprising an Oldham coupling preventing relative rotation between first and second scroll members of said first compression mechanism and connected to said piston and causing said piston to reciprocate relative to said cylindrical bore.5. The compressor of claim 3 , wherein said drive shaft drivingly engages said first and second compression mechanisms.6. The compressor of claim 5 , wherein said piston is connected to an eccentric portion of said drive shaft and rotation of said drive shaft causes corresponding reciprocation of said piston.7. The compressor of claim 1 , wherein said first compression mechanism compresses said fluid to a first pressure and said second compression ...

SCROLL COMPRESSOR

A scroll compressor which is capable of preventing thermal damage to an O-ring and has a filter arrangement structure with favorable installation work efficiency is provided. The compressor is configured such that an intake pipe () for drawing in a refrigerant gas through an external pipe (P) is securely joined to a steel compressor casing () by penetrating therethrough, the compressor casing housing a stationary scroll () and a swingable scroll (); and the lower end part of the intake pipe is fitted into an intake portion (K) with an O-ring () disposed therebetween, the intake portion being provided in the stationary scroll. The intake pipe is configured to have a steel iron pipe body () on the intake portion side and a copper pipe body () joined to the upper end part of the iron pipe body. The copper pipe body of the intake pipe is silver-brazed () to the compressor casing, and a filter (F) is installed in the intake pipe. 1. A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined to a steel compressor casing by penetrating therethrough , the compressor casing being configured to house a stationary scroll and a swingable scroll; and a lower end part of the intake pipe is fitted into an intake portion with an O-ring disposed therebetween , the intake portion being provided in the stationary scroll , the scroll compressor being characterized in that the intake pipe is configured to have a steel iron pipe body on the intake portion side and a copper pipe body joined to an upper end part of the iron pipe body , the copper pipe body being made of copper or another metal a surface of which is plated with copper; the copper pipe body of the intake pipe is silver-brazed to the compressor casing; and a filter for removing dust mixed in the refrigerant gas is installed in the intake pipe.2. A scroll compressor in which an intake pipe for drawing in a refrigerant gas through an external pipe is securely joined ...

SCROLL COMPRESSOR

A scroll compressor () includes a bearing oil supply passage () configured to supply a refrigeration oil from an oil reservoir () located in a casing () to a bearing of a driving shaft (). An oil groove () which communicates only with the oil reservoir () in the casing () through a connection passage () and a capillary tube () is formed on a thrust sliding surface () of a fixed scroll (). Since the bearing oil supply passage () is not in communication with the oil groove (), even when an orbiting scroll () is tilted and a pressure of the oil groove () decreases, a pressure of the bearing oil supply passage () does not decrease, and accordingly, the refrigeration oil is supplied from the bearing oil supply passage () to the bearing of the driving shaft (). 1. A scroll compressor comprising:a casing;a compression mechanism housed in the casing, the compression mechanism including a fixed scroll and an orbiting scroll;a driving shaft housed in the casing, the drive shaft being engaged with the orbiting scroll;a bearing oil supply passage configured to supply the lubricating oil from an oil reservoir located in the casing to a bearing location in the compression mechanism, the bearing location being disposed with the driving shaft; anda groove communication passage,the compression mechanism being configured to discharge a compressed fluid into the casing and to generate a pressing force pressing the orbiting scroll against the fixed scroll,the orbiting scroll having an end plate with a thrust sliding surface and the fixed scroll having a thrust sliding surface, the thrust sliding surfaces of the fixed scroll and the orbiting scroll being in sliding contact with each other,one of the thrust sliding surfaces of the orbiting scroll and the fixed scroll includes an oil groove arranged such that a lubricating oil flows into the oil groove,the bearing oil supply passage not being in communication with he oil groove, andthe groove communication passage connecting the oil ...

SCROLL COMPRESSOR

A scroll compressor may include an orbiting scroll having an orbiting scroll wall extending axially from an orbiting scroll plate towards a fixed scroll; a fixed scroll having a fixed scroll wall extending axially from a fixed scroll plate towards the orbiting scroll; and an axially extending drive shaft having an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll. An axial end portion of the orbiting scroll wall has a first seal for sealing between the orbiting scroll wall and the fixed scroll plate, and an axial end portion of the fixed scroll wall has a second seal for sealing between the fixed scroll wall and the orbiting scroll plate; and the first seal or the second seal has an aspect ratio of axial length to radial width which is 1:1.25 or greater. 1. A scroll compressor comprising:an orbiting scroll;a fixed scroll having a fixed scroll wall extending axially from a fixed scroll plate towards the orbiting scroll, wherein the orbiting scroll has an orbiting scroll wall extending axially from an orbiting scroll plate towards the fixed scroll; andan axially extending drive shaft having an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll, wherein an axial end portion of the orbiting scroll wall has a first seal for sealing between the orbiting scroll wall and the fixed scroll plate, and an axial end portion of the fixed scroll wall has a second seal for sealing between the fixed scroll wall and the orbiting scroll plate; and wherein the first seal or the second seal has an aspect ratio of axial length to radial width which is 1:1.25 or greater.2. The scroll compressor of claim 1 , wherein the aspect ratio of the first seal or the second seal is 1:1.25 or greater over an entire involute from a pump inlet to a pump outlet.3. The scroll compressor of claim 1 , wherein ...

Motor-driven compressor

A motor-driven compressor includes a compression unit, an electric motor, a housing, a cover, wherein the cover includes a main body and a connector coupler, and the cover and the housing define an accommodating chamber, a motor driving circuit that is accommodated in the accommodating chamber and includes a circuit board, and a metal terminal held in the connector coupler, wherein the metal terminal includes first and second end portions. The cover has a shield including a first shield portion, which blocks electromagnetic noise and forms at least part of the connector coupler, and a second shield portion, which blocks electromagnetic noise and forms at least part of the main body. The first and second shield portions are coupled to each other. The second shield portion includes an insertion hole into which one of the first and second end portions of the metal terminal is insertable.

Method of Active Oil Management for Multiple Scroll Compressors

A method of operating a refrigeration system uses a plurality of compressors in connected parallel. The method includes returning refrigerant and oil to the compressors, the refrigerant also having oil entrained therein, separating the oil entrained in the refrigerant, and returning more of the oil entrained in the refrigerant to a lead compressor of the plurality of compressors regardless of whether the lead compressor is operating. The method also includes connecting the oil sumps of all of the plurality of compressors such that oil is supplied from the lead compressor to at least one non-lead compressor of the plurality of compressors when the at least one non-lead compressor is operating. 1. A method of operating a refrigeration system using a plurality of compressors connected in parallel , the method comprising:returning refrigerant and oil to the compressors, the refrigerant also having oil entrained therein;separating the oil entrained in the refrigerant;returning more of the oil entrained in the refrigerant to a lead compressor of the plurality of compressors regardless of whether the lead compressor is operating;connecting the oil sumps of all of the plurality of compressors such that oil is supplied from the lead compressor to at least one non-lead compressor of the plurality of compressors when the at least one non-lead compressor is operating.2. The method of claim 1 , further comprising:providing a common supply line; andsupplying more oil to the lead compressor than is supplied to any non-lead compressors of the plurality of compressors.3. The method of claim 2 , further comprising providing claim 2 , to an inlet port for each of the plurality of compressors claim 2 , a separate inlet supply line claim 2 , wherein supplying more oil to the lead compressor comprises restricting the inlet supply lines to each of the non-lead compressors.4. The method of claim 3 , wherein restricting the inlet supply lines creates reduced suction pressures at the inlet ...

REFRIGERANT SCROLL COMPRESSOR FOR MOTOR VEHICLE AIR CONDITIONING SYSTEMS

A refrigerant scroll compressor for a motor vehicle air conditioning system having a fixed scroll, an orbiting scroll engaging with the fixed scroll, wherein the fixed scroll and the orbiting scroll cooperate to compress a refrigerant gas. An intermediate pressure chamber is disposed adjacent the orbiting scroll, an oil return duct provides fluid communication between the intermediate pressure chamber and a high pressure area of the refrigerant scroll compressor, and at least one intermediate pressure duct is formed in one of the orbiting scroll and fixed scroll and is in fluid communication with the intermediate pressure chamber. 1. A refrigerant scroll compressor for a motor vehicle air conditioning system comprising:a fixed scroll;an orbiting scroll engaging with the fixed scroll, wherein the fixed scroll and the orbiting scroll cooperate to compress a refrigerant gas;an intermediate pressure chamber disposed adjacent the orbiting scroll;an oil return duct providing fluid communication between the intermediate pressure chamber and a high pressure area of the refrigerant scroll compressor; andat least one intermediate pressure duct formed in one of the orbiting scroll and the fixed scroll and in fluid communication with the intermediate pressure chamber.2. The refrigerant scroll compressor of claim 1 , wherein the fixed scroll and the orbiting scroll cooperate to define a plurality of cavities intermediate the fixed scroll and the orbiting scroll claim 1 , wherein the at least one intermediate pressure duct is in fluid communication with at least one of the plurality of cavities and is configured to facilitate a flow of the refrigerant gas between the at least one of the plurality of cavities and the intermediate pressure chamber.3. refrigerant scroll compressor of claim 1 , further comprising an oil extraction duct in fluid communication with the intermediate pressure chamber.4. The refrigerant scroll compressor of claim 3 , further comprising an expansion device ...

Scroll compression device

A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, a pickup 45 is connected to an oil supply path 41 extending in an up-and-down direction in the driving shaft 15, and intercommunication paths 38 B, 54 A through which lubrication oil scraped up by the pickup 45 and supplied to respective lubrication sites is returned to the lower side of the driving motor 13 are provided between the stator 37 and the spacer ring 38 or between the spacer ring 38 and the casing 3.

SCROLL COMPRESSION DEVICE

A scroll compression device that is adaptable to a larger elimination capacity by using a balancer of magnetic material is provided. A scroll compression mechanism for compressing refrigerant and a driving motor that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing the scroll compression mechanism is supported in the casing by a main frame a rotor of the driving motor is connected to the driving shaft the driving shaft is supported in the casing by a bearing plate an upper balancer of magnetic material is secured onto the shaft above the stator of the driving shaft a lower balancer of non-magnetic material is secured to the lower end of the rotor and an auxiliary balancer of non-magnetic material is secured in the gap between the upper end of the rotor and the upper balancer 1. A scroll compression device , characterized in that a scroll compression mechanism for compressing refrigerant and a driving motor that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing , the scroll compression mechanism is supported in the casing by a main frame , a stator of the driving motor is directly or indirectly supported in the casing , the driving shaft is connected to a rotor of the driving motor and the driving shaft is supported in the casing by a bearing plate , an upper balancer formed of magnetic material is secured onto the shaft above the stator of the driving shaft , a lower balancer formed of non-magnetic material is secured to a lower end of the rotor , and an auxiliary balancer formed of non-magnetic material is secured in a gap between an upper end of the rotor and the upper balancer.2. The scroll compression device according to claim 1 , wherein the lower balancer and the auxiliary balancer are swaged to the rotor by using a rivet.3. The scroll compression device according to ...

SCROLL COMPRESSOR HAVING ADJUSTABLE SPACERS

A scroll compressor comprises: housing orbiting scroll and fixed scroll The drive shaft has an eccentric shaft portion so that rotation of the eccentric shaft portion imparts an orbiting motion to the orbiting scroll relative to the fixed scroll. Axial spacers are located between the fixed scroll and the housing for spacing the fixed scroll relative to the orbiting scroll. When the scroll compressor is assembled and tested and it is desired to perform shimming, the fixed scroll can be removed and a selected spacer placed in position prior to re-assembling the fixed scroll. 1. A method comprising:removing a fixed scroll from a housing of a scroll compressor comprising a fixed scroll and an orbiting scroll;replacing a first axial spacer from a plurality of axial spacers between the housing and the fixed scroll with a replacement axial spacer, wherein the replacement axial spacer defines a different axial thickness than the first axial spacer, and wherein the plurality of axial spacers and the replacement axial spacer define a spacing in at least one of an axial direction or an angular alignment between a fixed scroll and an orbiting scroll of a scroll compressor; andfixing the fixed scroll to the housing.2. The method of claim 1 , wherein respective axial spacers of the plurality of axial spacers are located at generally equal angles with respect to a central axis of the compressor.3. The method of claim 1 , wherein at least one of the housing or the fixed scroll comprises means for locating the plurality of axial spacers in position between the fixed scroll and the housing claim 1 , and wherein replacing the first axial spacer from the plurality of axial spacers between the housing and the fixed scroll with the replacement axial spacer comprises removing the first axial spacer from a respective one of the means for location the plurality of axial spacers and locating the replacement axial spacer4. The method of claim 1 , wherein each of the plurality of axial spacers ...

Suction Header Arrangement for Oil Management in Multiple-Compressor Systems

A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors. The suction flow piping arrangement has a suction header configured to carry the flow of refrigerant and oil, and a primary compressor supply conduit connected to the suction header. The primary compressor supply conduit supplies refrigerant and oil to a first compressor of the two or more compressors. A secondary compressor supply conduit branches off from the suction header. The secondary compressor supply conduit supplies refrigerant to a second compressor of the two or more compressors. The primary compressor supply conduit is configured to supply more oil to the first compressor than the secondary compressor supply conduit supplies to the second compressor.

SCROLL COMPRESSION DEVICE AND METHOD FOR MAGNETIZING SCROLL COMPRESSION DEVICE

A scroll compression device that enhances the efficiency of workability of magnetization of windings is provided. A scroll compression mechanism for compressing refrigerant and a driving shaft that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing , the scroll compression mechanism is supported in the casing by a main frame , a rotor of the driving motor is connected to the driving shaft , the driving shaft is supported in the casing by a bearing plate , a pickup is connected to an oil supply path extending in an up-and-down direction in the driving shaft , and a holder extending in a radial direction is provided in the oil supply path at the back side of the pickup 1. A scroll compression device , characterized in that a scroll compression mechanism for compressing refrigerant and a driving shaft that is connected to the scroll compression mechanism through a driving shaft and drives the scroll compression mechanism are accommodated in a casing:the scroll compression mechanism is supported in the casing by a main frame;a rotor of the driving motor is connected to the driving shaft,the driving shaft is supported in the casing by a bearing plate;a pickup is connected to an oil supply path extending in an up-and-down direction in the driving shaft; anda holder extending in a radial direction is provided in the oil supply path at the back side of the pickup.2. The scroll compression device according to claim 1 , wherein the holder is a pin member penetrating through the oil supply path.3. The scroll compression device according to claim 1 , wherein a lower balancer is provided to a lower portion of the rotor of the driving motor claim 1 , a regulation plate for regulating rotation of the rotor is provided to the lower surface of the lower balancer claim 1 , and a plurality of lock groove portions are provided on the outer periphery of the regulation plate.4. The scroll ...

Capacity Modulated Scroll Compressor

A compressor including a housing defining a suction pressure region and a discharge pressure region includes first and second scroll members forming compression pockets. A first chamber located on the first end plate of the first scroll member includes first and second passages and a first aperture extending therethrough and in communication with the first chamber. The first aperture provides communication between a compression pocket and the first chamber. A modulation assembly is located in the first chamber and includes a heater and a thermal valve. The valve is displaceable from a first position that isolates the first passage from the second passage and a second position that permits communication between the first and second passages. The valve is displaced as a result of a temperature change provided by the heater.

HERMETIC ELECTRICAL FEEDTHROUGH ASSEMBLY FOR A COMPRESSOR

An electrical feedthrough assembly for providing connection to components of a compressor includes a housing having an inner surface defining a channel. A sealed wire assembly is provided in the channel. The sealed wire assembly includes a body having an outer surface and a plurality of wires sealingly passing through the body. 1. An assembly for a compressor , the assembly comprising:a housing being connectable to a shell of the compressor, the housing comprising a passageway; and a body positioned in the passageway and connected to the housing to form a hermetic seal between the housing and the body; and', 'a plurality of wires embedded in the body, each wire of the plurality of wires being individually hermetically sealed by the body and having a first end connectable to an internal component of the compressor and a second end opposite the first end connectable to a component external to the compressor., 'a wire assembly, the wire assembly comprising2. The assembly of wherein the connection between the body and the housing is a threaded connection.3. The assembly of wherein the threaded connection between the body and the housing includes an adhesive to form the hermetic seal.4. The assembly of wherein the connection between the body and the housing is an adhesive connection.5. The assembly of wherein the adhesive connection comprises at least one of a glue claim 4 , an epoxy claim 4 , a cyanoacrylate or a putty contacting both the body and the housing. This application is a continuation-in-part of U.S. application Ser. No. 12/843,429, filed Jul. 26, 2010, entitled HERMETIC ELECTRICAL FEEDTHROUGH ASSEMBLY FOR A COMPRESSOR AND METHOD FOR MAKING THE SAME and this application claims the benefit of U.S. Provisional Application No. 61/726,672, filed Nov. 15, 2012, entitled HERMETIC ELECTRICAL FEEDTHROUGH ASSEMBLY FOR A COMPRESSOR, and U.S. Provisional Application No. 61/726,676, filed Nov. 15, 2012, entitled SYSTEMS AND COMPRESSORS USING FLAMMABLE REFRIGERANT, all of ...

Compressor assembly with directed suction

A compressor may include a shell assembly, a compression mechanism and a conduit. The shell assembly may include a fitting through which fluid is received from outside of the compressor. The compression mechanism may be disposed within a chamber defined by the shell assembly. The conduit may extend through the chamber between the fitting and a suction inlet of the compression mechanism and transmit at least a portion of the fluid from the fitting to the suction inlet. The conduit may include an inlet that may be spaced apart from the fitting and an outlet that may engage the compression mechanism.

COMPRESSOR HAVING CAPACITY MODULATION ASSEMBLY

A compressor may include a shell, first and second scrolls, a seal assembly, a modulation control chamber, and a modulation control valve. The first scroll may include a first end plate having a biasing passage extending therethrough. The seal assembly may isolate a discharge pressure region from a suction pressure region. The seal assembly and the first scroll may define an axial biasing chamber therebetween that communicates with the axial biasing chamber and a first pocket between the first and second scrolls. The modulation control chamber may be fluidly coupled with the biasing chamber by a first passage. The modulation control valve may be fluidly coupled with the modulation control chamber by a second passage and movable between a first position allowing communication between the second passage and the suction pressure region and a second position restricting communication between the second passage and the suction pressure region. 1. A compressor comprising:a shell assembly defining a suction pressure region and a discharge pressure region;a first scroll member disposed within said shell assembly and including a first end plate having a discharge passage, a first spiral wrap extending from said first end plate and a biasing passage extending through said first end plate;a second scroll member disposed within said shell assembly and including a second end plate having a second spiral wrap extending therefrom, said first and second spiral wraps meshingly engaged with each other and forming a series of pockets therebetween;a seal assembly engaging said first scroll member and isolating said discharge pressure region from said suction pressure region, said seal assembly and said first scroll member defining an axial biasing chamber therebetween, said biasing passage being in communication with a first of said pockets and said axial biasing chamber;a modulation control chamber fluidly coupled with said axial biasing chamber by a first passage; anda modulation ...

COMPRESSOR AND OIL-COOLING SYSTEM

A compressor may include a shell, a compression mechanism, a crankshaft, a bearing support, and a lubricant sump. The compression mechanism may be disposed in the shell and may compress a working fluid. The crankshaft may be disposed at least partially in the shell and may drivingly engage the compression mechanism. The bearing support may rotatably support the crankshaft. The lubricant sump may retain a volume of lubricant and may be disposed between the bearing support and the compression mechanism. 1. A compressor comprising:a shell;a compression mechanism disposed in said shell and compressing a working fluid;a crankshaft disposed at least partially in said shell and drivingly engaged with said compression mechanism;a bearing support rotatably supporting said crankshaft; anda lubricant sump for retaining a volume of lubricant and disposed between said bearing support and said compression mechanism.2. The compressor of claim 1 , further comprising a thrust plate disposed between said bearing support and said compression mechanism claim 1 , said thrust plate having an engaging surface that is engaged with said compression mechanism claim 1 , said lubricant sump being defined by said thrust plate claim 1 , said bearing support claim 1 , and said shell.3. The compressor of claim 2 , wherein said bearing support and said thrust plate both include a plurality of openings allowing said working fluid and said lubricant to flow throughout said shell.4. The compressor of claim 1 , further comprising a counterweight attached to said crankshaft and rotating with rotation of said crankshaft claim 1 , said counterweight traveling through lubricant in said lubricant sump during rotation of said crankshaft and splashing said lubricant therein to transmit said lubricant to said compression mechanism.5. The compressor of claim 4 , wherein an eccentric portion of said counterweight travels through lubricant in said lubricant sump during less than one-hundred-eighty degrees of ...

Surface treating agent for wear-resistance surface, manufacturing method thereof and compressor using the same

The present disclosure relates to a wear-resistant surface treating agent, a manufacturing method thereof, and a compressor using the same. According to one aspect of the present disclosure, the surface treating agent includes an organic solvent, nanodiamond powder and carbon nanotube powder dispersed in the organic solvent, and a PTFE solution mixed with the organic solvent, wherein the organic solvent is an amide-based organic solvent.

AIR COMPRESSION DEVICE

The present application discloses an air compression device, including a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; and a filter through which air passes, the air being sucked into the housing. The filter may include a plate member having a first main plate portion provided with air holes through which the air passes. A surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air. 1. An air compression device , comprising:a housing in which an air compressor is stored, the air compressor being configured to generate compressed air; anda filter through which air passes, the air being sucked into the housing,wherein the filter includes a plate member having a first main plate portion provided with air holes through which the air passes, andwherein a surface of the first main plate portion is oriented in a first direction, the air holes extending through the plate member in a second direction intersecting with the first direction so as to change a flow direction of the air.2. The air compression device according to claim 1 ,wherein the filter includes a second main plate portion aligned with the plate member in a third direction different from the first and second directions, andwherein the second direction has a first intersection angle with an imaginary plane which perpendicularly intersects with the first direction.3. The air compression device according to claim 2 ,wherein the air holes in the first main plate portion include a first air hole, and a second air hole aligned with the first air hole in a fourth direction along the surface of the plate member,wherein the second main plate portion includes a third air hole extending in a fifth direction having a second intersection angle with the fourth direction, and a fourth air hole ...

Startup Control Systems And Methods To Reduce Flooded Startup Conditions

A refrigeration system includes a startup mode control module that receives an off time of a compressor of the refrigeration system and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module operates the compressor in the normal startup mode in response to the startup mode control module selecting the normal startup mode, in the flooded startup mode in response to the startup mode control module selecting the flooded startup mode, and transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode. The compressor is operated at a first speed in the normal startup mode and at a second speed in the flooded startup mode.

CAST-IN OFFSET FIXED SCROLL INTAKE OPENING

A fixed scroll compressor body includes a scroll compressor body casting. The casting has a central body portion having a plate-like base with a spiral scroll rib projecting from the base at a right angle thereto. The spiral scroll rib includes a volume between the spiraled ribs for the compressing of refrigerant. The spiral scroll rib spirals from a central region of the plate-like base to an outer wall of the central body portion. The casting further includes a first inward-protruding portion that protrudes from the outer wall into the volume. A distance that the first inward-protruding portion protrudes into the volume is greater than a thickness of the first inward-protruding portion such that removal of the first inward-protruding portion results in a first intake opening in the outer wall. The first intake opening provides a path for a flow of refrigerant into the volume. 1. A fixed scroll compressor body comprising:a scroll compressor body casting, the casting comprising: 'a first inward-protruding portion that protrudes from the outer wall into the volume wherein a radially-extending distance, that the first inward-protruding portion protrudes into the volume, is greater than a radial-extending thickness of the first inward-protruding portion such that removal of the first inward-protruding portion is configured to result in a first intake opening in the outer wall, the first intake opening providing a path for a flow of refrigerant into the volume.', 'a central body portion having a plate-like base with a spiral scroll rib projecting axially from the plate-like base, wherein the spiral scroll rib includes a volume between the spiraled ribs for the compressing of refrigerant, and wherein the spiral scroll rib spirals from a central region of the plate-like base to an outer wall of the central body portion; and'}2. The fixed scroll compressor body of claim 1 , further comprising a second inward-protruding portion that protrudes from the outer wall into the ...

TWO-PIECE SUCTION FITTING

A suction fitting coupled to a scroll compressor that has an outer housing with an inside diameter and a suction port defined in a wall of the outer housing. A suction duct is disposed inside the outer housing at a spaced distance from the wall of the outer housing. The suction duct defines an entrance port aligned with the suction port. The suction fitting includes a first member being generally cylindrical, and a second member being generally cylindrical. The second member is disposed inside the first member with a portion of the second member extending into the outer housing through the suction port, spanning the spaced distance to the suction duct, and coupling with the entrance port of the suction duct. Neither the first member nor the second member includes a suction screen for filtering out solid contaminants in a flow of refrigerant. 1. A suction fitting coupled to a scroll compressor , the scroll compressor including an outer housing having an inside diameter and a suction port defined in a wall of the outer housing , and a suction duct disposed inside the outer housing a spaced distance from the wall of the outer housing , with the suction duct defining an entrance port aligned with the suction port , the suction fitting comprising:a first member being generally cylindrical anda second member being generally cylindrical, with the second member disposed inside the first member with a portion of the second member extending into the outer housing through the suction port and spanning the spaced distance to the suction duct and coupling with the entrance port of the suction duct;wherein neither the first member nor the second member includes a suction screen for filtering out solid contaminants in a flow of refrigerant.2. The suction fitting coupled to a scroll compressor of claim 1 , wherein the first member has a body portion with a second inside diameter and a nose portion with a first inside diameter claim 1 , with the second inside diameter larger than ...

Scroll compressor

A scroll compressor includes a casing with an oil reservoir, fixed and movable scrolls, a crank shaft, and a housing having an upper bearing rotatably supporting the crank shaft. The crank shaft has an oil feed path and the housing has a crank chamber. An outer peripheral surface of the crank shaft has an annular groove, and a spiral groove. The housing has a bearing back-face passage connecting the crank chamber and the annular groove. If no oil is fed from the oil reservoir to the sliding surface of the crank shaft through the oil feed path during rotation of the crank shaft, oil in the crank chamber is fed to the upper bearing from the crank chamber through the bearing back-face passage and the annular groove due to a pump effect of the spiral groove.

COMPRESSOR WITH THERMAL PROTECTION SYSTEM

A compressor includes a housing, a partition, a first scroll, a second scroll, and a thermal protection system. The partition is disposed within the housing and defines a suction chamber and a discharge chamber. The partition includes a discharge passage in fluid communication with the discharge chamber. The thermal protection system includes a positioning body and a displacement member. The positioning body is coupled to the second scroll and translatably disposed within the discharge passage. The displacement member is disposed between the positioning body and the partition and configured to translate the second scroll relative to the first scroll between first and second positions. 1. A compressor comprising:a housing;a partition disposed within the housing, the partition defining a suction chamber and a discharge chamber, and including a discharge passage in fluid communication with the discharge chamber;a first scroll supported within said housing and including a first endplate having a first spiral wrap extending therefrom;a second scroll supported within said housing and including a second endplate having a first side and a second side opposite the first side, the first side having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a series of compression pockets; anda thermal protection system including a positioning body and a displacement member, the positioning body coupled to the second scroll and translatable relative to the discharge passage, the displacement member disposed between the positioning body and the partition and configured to translate the second scroll relative to the first scroll between first and second positions in response to a change in an operating temperature of the compressor.2. The compressor of claim 1 , wherein the displacement member comprises a shape memory material.3. The compressor of claim 2 , wherein the shape memory material includes at least one of a bi-metal and tri-metal ...

COMPRESSOR WITH THERMALLY-RESPONSIVE INJECTOR

A compressor includes a housing, a partition, a first scroll, a second scroll, and a valve assembly disposed within the second scroll. The valve assembly includes a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing. When in the first position, the valve body inhibits fluid communication between a fluid source and one of a series of compression pockets formed by the first and second scroll. When in the second position, the valve body allows fluid communication between the conduit and one or more of the series of compression pockets. The valve body is displaceable between the first and second positions in response to a change in operating temperature of the compressor. 1. A compressor comprising:a housing;a partition disposed within the housing, the partition defining a suction chamber and a discharge chamber, and including a discharge passage in fluid communication with the discharge chamber;a first scroll supported within said housing and including a first endplate having a first spiral wrap extending therefrom;a second scroll supported within said housing and including a second endplate having a first side, a second side opposite the first side, and an injection passage, the first side having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a series of compression pockets, the injection passage being in fluid communication with at least one of said series of compression pockets; andan injection system including a conduit and a valve assembly, the conduit having a first end in fluid communication with a fluid source, and a second end in fluid communication with the injection passage, the valve assembly including a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing, said valve body ...

ADJUSTABLE CORE TURBOCHARGER

A turbocharger is provided herein. The turbocharger includes a housing and an adjustable core at least partially circumferentially surrounded by the housing, the adjustable core having a turbine rotor coupled to a compressor rotor via a shaft. The turbocharger further includes an adjustment mechanism coupled to the adjustable core configured to adjust an axial position of the housing relative to the adjustable core in response to adjustment commands. 1. A method for a turbocharger comprising:adjusting an adjustment mechanism of the turbocharger in response to operating conditions, the turbocharger include a housing and an adjustable core circumferentially surrounded by the housing, the adjustable core axially slideable relative to the housing and including a turbine rotor coupled to a compressor rotor via a shaft, the adjustment mechanism coupled to the adjustable core, the core sliding the compressor rotor and the turbine rotor concurrently.2. The method of claim 1 , wherein the housing include a compressor volute and a turbine scroll claim 1 , the compressor volute configured to receive air from a compressor rotor and the turbine scroll configured to direct exhaust gas into a turbine rotor claim 1 , wherein the core slides the compressor rotor relative to the volute and the turbine rotor relative to the turbine scroll concurrently.3. The method of claim 1 , further comprising a second turbine scroll configured to direct exhaust gas to the turbine rotor.4. The method of claim 3 , wherein the first and second turbine scrolls are separated via a divider.5. The method of claim 4 , wherein the divider includes a coolant passage configured to flow coolant therethrough.6. The method of claim 1 , wherein the adjustable core includes an adjustment post extending therefrom.7. The method of claim 6 , wherein the adjustment post is moveably positioned in a track.8. The method of claim 7 , wherein the track circumferentially extends around the adjustable core and includes a ...

CAPACITY-MODULATED SCROLL COMPRESSOR

A compressor may include a shell defining an internal volume containing compressed working fluid and first and second scrolls disposed within the internal volume. The first scroll may include a first spiral wrap. The second scroll may include a second spiral wrap, a suction inlet opening and a capacity-modulation aperture. The second spiral wrap may engage the first spiral wrap to define a pocket therebetween. The suction inlet opening may be sealed off from the internal volume. The capacity-modulation aperture may receive a valve member that is movable between a first position allowing leakage of fluid from the pocket to the suction inlet opening and a second position restricting leakage of fluid from the pocket. 1. A compressor comprising:a shell defining an internal volume;a first scroll disposed within said internal volume and including a first spiral wrap;a second scroll disposed within said internal volume and including a second spiral wrap engaged with said first spiral wrap to form a pocket between said first and second spiral wraps, said second scroll including a suction inlet opening, a discharge passage and a capacity-modulation aperture, said suction inlet opening receiving said fluid at a first pressure and being isolated from said internal volume, said discharge passage discharging said fluid to said internal volume at a second pressure that is higher than said first pressure; anda valve member at least partially disposed within said capacity-modulation aperture and movable between a first position in which said valve member restricts fluid to flow around a tip of said first spiral wrap to restrict fluid communication between said suction inlet opening and said pocket and a second position in which said valve member allows fluid-flow around said tip of said first spiral wrap to provide fluid communication between said suction inlet opening and said pocket.2. The compressor of claim 1 , wherein an end of said valve member is exposed to fluid within a ...

SCROLL COMPRESSOR

A scroll compressor includes a compression mechanism having fixed and orbiting scrolls engaged with each other to form a compression chamber. Each of the fixed and orbiting scrolls includes an end plate and a spiral wall-shaped wrap extending from the end plate. The fixed scroll has an injection port configured to communicate with the compression chamber through a communication passageway located in the fixed-side end plate. The orbiting-side wrap has a thick portion located at a position corresponding to the injection port and having an increasing tooth thickness portion. A tooth thickness of the increasing tooth thickness portion increases from a start of winding to an end of winding of the orbiting-side wrap. The thick portion has a thickness greater than or equal to a dimension of an opening of the injection port measured along a tooth thickness of the orbiting-side wrap. 1. A scroll compressor comprising: a fixed scroll including a fixed-side end plate and a spiral wall-shaped fixed-side wrap extending from the fixed-side end plate, and', 'an orbiting scroll including an orbiting-side end plate and a spiral wall-shaped orbiting-side wrap extending from the orbiting-side end plate,, 'a compression mechanism including'}the fixed-side wrap and the orbiting-side wrap being engaged with each other to form a compression chamber between the fixed and orbiting scrolls,the fixed scroll having an injection port configured to communicate with the compression chamber through a communication passageway located in the fixed-side end plate,the orbiting-side wrap having a thick portion thicker than an adjacent portion, the thick portion having an increasing tooth thickness portion, and the thick portion being located at a position corresponding to the injection port,a tooth thickness of the increasing tooth thickness portion increasing from a start of winding to an end of winding of the orbiting-side wrap, andthe thick portion having a thickness greater than or equal to a ...

AIR COMPRESSION DEVICE

An air compression device is provided with a rotary compressor, a discharge flow channel connected to a discharge portion of the compressor, a release flow channel disposed to be connectable to the discharge flow channel, and an operation control unit configured to perform a release operation of releasing a part or all of compressed air remaining in the discharge flow channel through the release flow channel when the operation control unit controls to stop the compressor. 1. An air compression device , comprising:a rotary compressor;a discharge flow channel connected to a discharge portion of the compressor;a release flow channel disposed to be connectable to the discharge flow channel; andan operation control unit configured to perform a release operation of releasing a part or all of compressed air remaining in the discharge flow channel through the release flow channel when the operation control unit controls to stop the compressor.2. The air compression device according to claim 1 , whereinwhen the release operation is performed, the operation control unit controls to start releasing the compressed air while driving the compressor, and controls to stop the compressor after a predetermined time elapses.3. The air compression device according to claim 1 , whereinwhen the release operation is performed, the operation control unit controls to start releasing the compressed air while driving the compressor, and controls to stop the compressor when a condition for finishing the release operation is satisfied.4. The air compression device according to claim 1 , further comprising:an opening/closing mechanism which connects or disconnects the discharge flow channel to or from the release flow channel, whereinthe operation control unit is configured to bring the opening/closing mechanism to a disconnected state when an ordinary operation of generating compressed air is performed, and to bring the opening/closing mechanism to a connected state before the compressor is ...

Scroll Compressor

The purpose of the present invention is to suppress the contact between the wrap tooth tip and the tooth bottom by enlarging the tooth bottom step, and to reduce the loss owing to the gap as a result of enlarging the tooth bottom step. The fixed scroll includes a fixed scroll-side flat plate and a fixed-side wrap standing on one surface of the fixed-side plate while retaining the spiral shape. The orbiting scroll includes an orbiting-side plate and an orbiting-side wrap standing on one surface of the orbiting-side plate while retaining the spiral shape. The orbiting-side wrap orbits with respect to the fixed scroll while being in mesh with the fixed side wrap to form a compression chamber. Each of the fixed-side plate and the orbiting-side plate has the step on the tooth bottom at the inner periphery deeper than the step on the tooth bottom at the outer periphery. The step at the outer or the inner periphery, which is formed on the tooth bottom of the orbiting-side plate, has the depth smaller than the one on the tooth bottom of the fixed-side plate. 1. A scroll compressor comprising:a fixed scroll including a fixed-side plate and a fixed-side wrap standing on one surface of the fixed-side plate while retaining a spiral shape;an orbiting scroll including an orbiting-side plate, and an orbiting-side wrap standing on one surface of the orbiting-side plate while retaining a spiral shape, which allows the orbiting-side wrap to be in mesh with the fixed-side wrap for orbiting with respect to the fixed scroll to form a compression chamber; andan electric motor for driving the orbiting scroll via a crankshaft,wherein each tooth bottom of the fixed-side wrap and the orbiting-side wrap has a step formed to become deeper from an outer periphery to an inner periphery; andthe step is formed on the tooth bottom of the fixed-side wrap at the inner periphery so as to be deeper than the step formed on the tooth bottom of the orbiting-side wrap at the inner periphery.2. The scroll ...

Scroll Compressor

An object is to enable suppression of degradation of reliability by supporting a flange portion of a crankshaft with a bearing while downsizing a scroll compressor by reducing the size of the flange portion of the crankshaft. A scroll compressor includes: a fixed scroll fixed to a frame; an orbiting scroll forming a compression chamber by performing an orbital motion with respect to the fixed scroll; an electric motor that drives the orbiting scroll via the crankshaft; and a bearing part provided on the lower side from the flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft. The scroll compressor furthers has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side. Assuming that the outer diameter of the flange portion is φDt and the outer diameter of the thrust stopper is φDs, φDt<φDs holds. 1. A scroll compressor comprising:a fixed scroll fixed to a frame;an orbiting scroll that forms a compression chamber by performing an orbital motion with respect to the fixed scroll;an electric motor that drives the orbiting scroll via a crankshaft; anda bearing part provided on the lower side from a flange portion of the crankshaft that rotatably supports a main shaft part of the crankshaft,wherein the compressor further has a thrust stopper, provided between the flange portion and the bearing part, in contact with the flange portion on the upper side and in contact with the bearing part on the lower side, and{'b': '12', 'i': 'd', 'wherein, assuming that an outer diameter of the flange portion is φDt and an outer diameter of the thrust stopper is φDs,'}φDt<φDs holds.2. The scroll compressor according to claim 1 , wherein the thrust stopper and the flange portion are integrally formed with the same member as the member of the crankshaft.3. The scroll compressor according to claim 1 , wherein the position of an ...

COMPRESSOR AND METHOD FOR ASSEMBLING A COMPRESSOR

A compressor and a method for assembling a compressor are provided. The compressor may include a compressor casing coupled to each of a suction inlet, into which a refrigerant may be introduced, and a discharge outlet, through which the refrigerant may be discharged, a compressor body mounted inside the compressor casing to compress the refrigerant suctioned in through the suction inlet, and then discharge the refrigerant through the discharge outlet, a noise reducing member disposed between the compressor body and the compressor casing, and at least one fixing member mounted inside the compressor casing to fix the noise reducing member to an inner wall of the compressor casing. 1. A compressor , comprising:a compressor casing coupled to each of a suction inlet, into which a refrigerant is introduced, and a discharge outlet, through which the refrigerant is discharged;a compressor body mounted inside the compressor casing to compress the refrigerant suctioned in through the suction inlet, and thereafter discharge the refrigerant through the discharge outlet;a noise reducing member disposed between the compressor body and the compressor casing; andat least one fixing member mounted inside the compressor casing to fix the noise reducing member to an inner wall of the compressor casing.2. The compressor according to claim 1 , wherein the at least one fixing member comprises a plurality of fixing members claim 1 , and wherein both ends of the noise reducing member are inserted into the plurality of fixing members claim 1 , respectively claim 1 , to be fixed to the inner wall of the compressor casing.3. The compressor according to claim 2 , wherein each of the plurality of fixing members comprises:a fixing portion fixed to the inner wall of the compressor casing, the fixing portion having a ring shape; anda protrusion that extends from the fixing portion in a direction substantially perpendicular to a radial direction of the fixing portion.4. The compressor according to ...

CO-ROTATING SCROLL COMPRESSOR

A co-rotating scroll compressor includes a driving-side scroll member that is rotationally driven by a driving unit and includes a spiral driving-side wall disposed on a driving-side end plate, and a driven-side scroll member () that includes a driven-side wall corresponding to the driving-side wall. The driven-side wall is disposed on a driven-side end plate () and engages with the driving-side wall to form a compression chamber. A first support member () is provided to a front end of a first driven-side wall () in an axis direction. The first support member () is connected to the front end by a positioning pin () positioning a phase around a rotation axis, and rotates together with the first driven-side wall (). The positioning pin () is pressed into the first support member () and is fitted into the first driven-side wall () in a non-pressed-in state. 1. A co-rotating scroll compressor , comprising:a driving-side scroll member that is rotationally driven by a driving unit and includes a spiral driving-side wall disposed on a driving-side end plate;a driven-side scroll member that includes a driven-side wall corresponding to the driving-side wall, the driven-side wall being disposed on a driven-side end plate and engaging with the driving-side wall to form a compression chamber; anda synchronous driving mechanism that transmits driving force from the driving-side scroll member to the driven-side scroll member to cause the driving-side scroll member and the driven-side scroll member to perform rotational movement in a same direction at a same angular velocity, whereina support member is provided to a front end of at least one of the driving-side wall and the driven-side wall in an axis direction, the support member being connected to the front end by a positioning pin positioning a phase around a rotation axis, and rotating together with the connected wall, andthe positioning pin is pressed into the support member and is fitted into the wall in a non-pressed-in ...

SCROLL COMPRESSORS WITH DIFFERENT VOLUME INDEXES AND SYSTEMS AND METHODS FOR SAME

A plurality of scroll compressors with different fixed volume indexes are connected in fluid parallel circuit and configured to selectively operate to maximize isentropic efficiency at different condensing temperatures. Different quantities of scroll compressors of different volume indexes may be selected based upon typical climate or geographic location environmental conditions to attempt to maximize efficiency. A controller may selectively operate different combinations of the compressors of different volume indexes bases up load demands and condensing temperature conditions, which may be determined in a variety of ways. 1. A compressor arrangement , comprising:a plurality of refrigerant compressors connected in parallel circuit, each refrigerant compressor having a volume index, the plurality of refrigerant compressors including at least a first compressor and a second compressor, wherein each of the first compressor and the second compressor include a single inlet, single outlet, and a single flowpath extending between the single inlet and the single outlet, and wherein each of the first compressor and the second compressor includes a housing and a motor contained within said housing, the first compressor having a different volume index than each second compressor, wherein the volume index of the first compressor and the second compressor is fixed and non-variable.2. The compressor arrangement of claim 1 , wherein the first and second compressors are scroll compressors.3. The compressor arrangement of claim 2 , wherein in relative relation between the first and second compressors claim 2 , each first compressor has a higher isentropic efficiency at a high temperature range for saturated condensing temperature claim 2 , and wherein each second compressor has a higher isentropic efficiency at a low temperature range for saturated condensing temperature claim 2 , the high temperature range being higher than the low temperature range.4. The compressor arrangement of ...

COMPRESSOR

A compressor is provided that may include a refrigerant flow path provided in a rotational shaft so as to guide a refrigerant gas. The rotational shaft operates a compression device using a drive force of an electric motor. In such a structure, the refrigerant gas may be directly discharged to a discharge space without passing through other portions such that flow path resistance may be minimized. 1. A compressor , comprising:a hermetic casing having a discharge space to which a refrigerant gas is discharged;an electric motor provided in the hermetic casing to supply a rotational drive force;a compression device provided in the hermetic casing so as to compress the refrigerant gas; anda rotational shaft that operates the compression device using the rotational drive force of the electric motor, wherein the rotational shaft includes a refrigerant flow path provided therein, the rotational shaft guiding the compressed refrigerant gas to the discharge space from the compression device.2. The compressor of claim 1 , wherein the discharge space in the hermetic casing is provided at an upper side of an inner space of the hermetic casing and an oil storage space in which oil is stored is provided at a lower side of the inner space of the hermetic casing claim 1 , wherein the electric motor is positioned in a lower portion of the discharge space claim 1 , wherein the compression device is positioned at a lower side of the electric motor claim 1 , wherein the rotational shaft is formed through each of centers of the electric motor and the compression device such that an upper end of the rotational shaft is exposed to the discharge space and a lower end of the rotational shaft is exposed to a space beneath the compression device claim 1 , and wherein the refrigerant flow path communicates with the discharge space and the space beneath the compression device such that the refrigerant gas discharged to the space beneath the compression device is guided to the discharge space.3. ...

SCROLL COMPRESSOR

A scroll compressor in which refrigerant gas is sucked into a hermetic container and is then compressed in a compression chamber. The scroll compressor includes an orbiting scroll including a second end plate having a second surface. The second end plate has an annular groove having an opening that opens into the second surface facing a frame and serving as a back-pressure chamber with the opening being closed by the frame, a gas communication path through which the groove communicates with the compression chamber in which the refrigerant gas is being compressed, and a first oil supply passage having a first opening that opens into at least one of a region inside the groove and a region outside the groove in the second surface and through which the refrigerating machine oil is supplied to a gap between the second surface and the frame. 1. A scroll compressor comprising:a fixed scroll including a first end plate and a first wrap located on the first end plate;an orbiting scroll including a second end plate and a second wrap located on a first surface of the second end plate that faces the fixed scroll, the orbiting scroll being disposed to define a compression chamber to compress refrigerant between the first wrap and the second wrap and orbiting relative to the fixed scroll;a frame facing a second surface opposite the first surface in the orbiting scroll and supporting a load on the orbiting scroll during compression of refrigerant gas; anda hermetic container containing the fixed scroll, the orbiting scroll, and the frame and including an oil sump in which refrigerating machine oil is held,the scroll compressor being configured to suck the refrigerant gas into the hermetic container and then compress the refrigerant gas in the compression chamber, an annular groove having an opening that opens into the second surface and serving as a back-pressure chamber with the opening being closed by the frame,', 'a gas communication path through which the groove communicates ...

SCROLL COMPRESSOR

A scroll compressor includes: a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved; a fixed scroll stored in the shell; an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll; a frame holding the orbiting scroll; a thrust plate disposed between the orbiting scroll and the frame; and a thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, in which: a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; and the thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does not protrude from the first surface portion of the thrust plate. 1. A scroll compressor comprising:a shell forming an outer case, the shell forming an oil reservoir in which lubricating oil is reserved;a fixed scroll stored in the shell;an orbiting scroll stored in the shell, the orbiting scroll forming a compression chamber together with the fixed scroll;a frame holding the orbiting scroll;a thrust plate disposed between the orbiting scroll and the frame; anda thrust oil return pipe fixed to the frame, the thrust oil return pipe being a pipe through which the lubricating oil flows to return to the oil reservoir, wherein:a hole portion is formed on the thrust plate, the hole portion passing from a first surface portion to a second surface portion, the first surface portion slidably contacting with the orbiting scroll, the second surface portion facing the frame; andthe thrust oil return pipe is inserted into the hole portion and is fit in the thrust plate, and an upper end portion of the thrust oil return pipe does ...

STATOR, THREE-PHASE INDUCTION MOTOR, AND COMPRESSOR

The present invention provides a stator, a three-phase induction motor and a compressor. The stator is applied to a three-phase induction motor of a compressor. The stator includes: a stator iron core; a plurality of stator teeth extending inwards along a radial direction of the stator; stator slots distributed between the plurality of stator teeth; and three phases of windings wound around the stator teeth to generate a rotating magnetic field, where a coil of each phase of winding in the three phases of windings is made of a composite wire. The composite wire includes a wire core made of a first conductive metal material, and an outer layer wrapping an outer circumferential surface of the wire core and made of a second conductive metal material, wherein the first conductive metal material and the second conductive metal material have different electrical conductivities. 1. A stator applied to a three-phase induction motor of a compressor , comprising:a stator iron core;a plurality of stator teeth extending inwards along a radial direction of the stator;stator slots distributed between the plurality of stator teeth; andthree phases of windings wound around the stator teeth to generate a rotating magnetic field, whereina coil of each phase of winding among the three phases of windings is made of a composite wire, and the composite wire comprises a wire core made of a first conductive metal material, and an outer layer wrapping an outer circumferential surface of the wire core and made of a second conductive metal material, wherein the first conductive metal material and the second conductive metal material have different electrical conductivities.2. The stator according to claim 1 , whereinthe first conductive metal material is aluminum, and the second conductive metal material is copper or a copper alloy; or,the first conductive metal material is an aluminum alloy, and the second conductive metal material is copper or a copper alloy.3. The stator according to claim ...

SCROLL COMPRESSOR

Disclosed herein is a scroll compressor in which refrigerant is compressed in a compression chamber while the volume of the compression chamber is gradually decreased due to relative rotation of a fixed scroll and an orbiting scroll. In accordance with the disclosure, the scroll compressor is provided in which a pressure in a back-pressure chamber is managed in connection with a discharge refrigerant pressure so that the orbiting scroll is supported by the pressure in the back-pressure chamber without a power loss or an inner leak in an overall pressure section of a scroll. 1. A scroll compressor comprising:a housing including a suction port and a discharge port formed in an outer peripheral surface of the housing, the housing defining a suction chamber and a discharge chamber, the suction chamber communicating with the suction port and the discharge chamber communicating with the discharge port;a fixed scroll disposed in a first portion of the housing and having an outlet formed therein communicating with the discharge chamber;a drive motor mounted to a second portion of the housing including a rotary shaft coupled thereto;an orbiting scroll eccentrically coupled to an end of the rotary shaft and configured to revolve about the fixed scroll, the orbiting scroll cooperating with the fixed scroll to define a plurality of compression chambers;a back-pressure chamber defined by the housing between the orbiting scroll and the rotary shaft, the back-pressure chamber configured to urge the orbiting scroll towards the fixed scroll;a back-pressure regulation passage comprising a first passage through which the discharge chamber communicates with the back-pressure chamber and a second passage through which the back-pressure chamber communicates with the suction chamber; anda pressure regulation unit in communication with the back-pressure regulation passage configured to regulate a pressure in the back-pressure chamber in response to a pressure in the discharge chamber.2. ...

HIGH PRESSURE SCROLL COMPRESSOR

Disclosed herein is a high-pressure scroll compressor, in response to a discharged refrigerant flowing into a back pressure chamber, capable of directly discharging the refrigerant to a space inside a main body, and capable of maintaining an intermediate pressure of the back pressure chamber to be less than a discharge pressure of the refrigerant by separately providing a discharge flow path in the back pressure chamber. 1. A high-pressure scroll compressor comprising:a main body;a fixed scroll fixed inside the main body and comprising a discharge port through which a high-pressure refrigerant is discharged;an orbiting scroll engaged with the fixed scroll to perform a relative orbiting motion, and forming a compression chamber with the fixed scroll;a main frame fixed inside the main body so as to be located under the orbiting scroll and comprising a back pressure chamber filled with an intermediate-pressure refrigerant;a back pressure hole provided in the orbiting scroll and provided to allow the compression chamber to communicate with the back pressure chamber;a bypass portion provided in plural on an upper surface of the fixed scroll and configured to selectively bypass the refrigerant of the compression chamber to a space inside the main body; anda back pressure chamber discharge portion configured to selectively discharge the refrigerant of the back pressure chamber to the space inside the main body.2. The high-pressure scroll compressor of claim 1 , whereinthe back pressure chamber discharge portion comprises a back pressure chamber discharge flow path provided in the fixed scroll to discharge the refrigerant inside the back pressure chamber into the space inside the main body, and a back pressure chamber discharge valve configured to selectively open and close the back pressure chamber discharge flow path.3. The high-pressure scroll compressor of claim 2 , whereinthe back pressure chamber discharge flow path is provided to pass through the fixed scroll from an ...

Scroll compressor

A scroll compressor includes a casing; an orbiting scroll; a fixed scroll; and a main frame which supports the orbiting scroll. The fixed scroll may include a fixed scroll end plate and a fixed scroll wrap which protrudes from the fixed scroll end plate. The main frame may include a main frame end plate which is provided on the opposite side of the fixed scroll end plate on the basis of the orbiting scroll, and a main frame side plate which protrudes from an outer circumferential portion of the main frame end plate toward the fixed scroll. The fixed scroll end plate, the main frame end plate, and the main frame side plate may form an orbiting space of the orbiting scroll.

Compressor Having Capacity Modulation

A compressor may include a shell assembly, first and second scrolls, a piston, and a piston-retention member. The piston engages the first scroll and may be partially received within a recess defined by the shell assembly. The piston and the shell assembly may cooperate to define a pressure chamber. The pressure chamber may be in selective fluid communication with a source of working fluid to control movement of the piston relative to the shell assembly. The piston-retention member may engage the piston and a rotationally fixed structure. The piston-retention member allows rotation of the piston relative to the first scroll in a first rotational direction and restricts rotation of the piston relative to the first scroll in a second rotational direction.

COMPRESSOR

A compressor, more particularly, a scroll compressor provides structures that may enhance centrifugal stiffness at a contact point between a fixed scroll and an orbiting scroll. The compressor may include an orbiting scroll having an orbiting scroll wrap wound around a radial-direction inner area from a radial-direction outer area; and a fixed scroll having a fixed scroll wrap wound around the radial-direction inner area from the radial-direction outer area. A surfacing part may be configured to narrow a distance between the orbiting scroll wrap and the fixed scroll wrap may be formed in a predetermined section of the orbiting scroll or fixed scroll wrap. 1. A compressor comprising:an orbiting scroll having an orbiting scroll wrap;a fixed scroll having a fixed scroll wrap; anda surfacing part that is disposed at the orbiting scroll wrap or the fixed scroll wrap and that reduces a distance between the orbiting scroll wrap and the fixed scroll wrap.2. The compressor of claim 1 , wherein the distance between the orbiting scroll wrap and the fixed scroll wrap is uniform except for an area including the surface part and areas at ends of the orbiting scroll wrap and the fixed scroll wrap.3. The compressor of claim 1 , wherein the orbiting scroll wrap and the fixed scroll wrap have thicknesses that at least partially vary claim 1 , andwherein the distance between the orbiting scroll wrap and the fixed scroll warp is constant except for an area including the surfacing part.4. The compressor of claim 1 , wherein the orbiting scroll and the fixed scroll are configured to make four or five contact points between the orbiting scroll wrap and the fixed scroll wrap based on the orbiting scroll orbiting with respect to the fixed scroll.5. The compressor of claim 4 , wherein the surfacing part is disposed at one of the contact points.6. The compressor of claim 4 , wherein an orbiting angle of the orbiting scroll has (i) a first range in which the four contact points are made ...

Compressor With Floating Seal

A compressor may include first and second scrolls and a seal. The first scroll includes a first end plate and a first spiral wrap extending from the first end plate. The first end plate may define a discharge passage and an annular recess surrounding the discharge passage. The second scroll includes a second end plate and a second spiral wrap extending from the second end plate. The first and second spiral wraps cooperate to define a plurality of fluid pockets. The seal may be at least partially received in the annular recess and may cooperate with the first scroll to define a biasing chamber receiving fluid at an intermediate pressure. The seal may include inner and outer diametrical surfaces. The inner diametrical surface may include a plurality of first annular grooves. The outer diametrical surface may include a plurality of second annular grooves.

COMPRESSOR HAVING IMPROVED DISCHARGE STRUCTURE

A scroll compressor is provided, that may include a connection groove to reduce discharge resistance. The scroll compressor may include a fixed scroll including a fixed end plate and a feed wrap and an orbiting scroll, rotating with respect to the fixed scroll and including an orbiting end plate and an orbiting wrap, and structure in which a connection groove having a concave groove shape provided at an inner surface of the fixed end plate to allow a refrigerant to flow through the connection groove depending on an overlapping state of the fixed wrap and the connection groove, thereby providing an effect of increasing opening efficiency of discharge holes at a beginning of discharge. 1. A scroll compressor , comprising:a fixed scroll including a fixed end plate and a fixed wrap; and a first compression chamber is formed between an outer surface of the fixed wrap and an inner surface of the orbiting wrap;', 'a second compression chamber is formed between an inner surface of the fixed wrap and an outer surface of the orbiting wrap;', 'the fixed end plate of the fixed scroll includes a first discharge inlet configured to discharge a refrigerant compressed in the first compression chamber and a second discharge inlet configured to discharge a refrigerant compressed in the second compression chamber;', 'a communication groove that connects the first discharge inlet and the second discharge inlet, and having a form of a recessed groove is formed in an inner surface of the fixed end plate; and', 'a refrigerant flows through the communication groove according to a state in which the orbiting wrap overlaps the communication groove., 'an orbiting scroll including an orbiting end plate and an orbiting wrap and configured to perform an orbiting movement about the fixed scroll, wherein;'}2. The scroll compressor of claim 1 , wherein the fixed end plate of the fixed scroll includes a discharge outlet at a position overlapping with any one of the first discharge inlet or the ...

SCROLL COMPRESSOR

A scroll compressor includes a fixed scroll fixed inside a housing, an orbiting scroll configured to orbit engaged with the fixed scroll, a rotary shaft configured to allow the orbiting scroll to orbit by supporting the orbiting scroll with an eccentric shaft eccentric from a main shaft, and a slide bush portion installed between a bearing of the orbiting scroll and the eccentric shaft and according to a rotational speed of the rotary shaft, configured to change a pressing force of the orbiting scroll applied to the fixed scroll by allowing an eccentricity to be changed by a gas load applied to the orbiting scroll. 1. A scroll compressor comprising:a fixed scroll fixed inside a housing;an orbiting scroll configured to orbit and be engaged with the fixed scroll;a rotary shaft configured to allow the orbiting scroll to orbit the orbiting scroll on an eccentric shaft eccentric from a main shaft; anda slide bush portion that is installed between a bearing of the orbiting scroll and the eccentric shaft and, according to a rotational speed of the rotary shaft, configured to change a pressing force of the orbiting scroll applied to the fixed scroll by allowing an eccentricity to be changed by a gas load applied to the orbiting scroll.2. The scroll compressor of claim 1 , wherein:the slide bush portion suppresses a pressing force of the orbiting scroll applied to the fixed scroll based on the rotary shaft being rotated at a high rotational speed; andthe orbiting scroll compresses the fixed scroll based on the rotary shaft being rotated at a low rotational speed.3. The scroll compressor of claim 2 , wherein the slide bush portion suppresses the pressing force of the orbiting scroll applied to the fixed scroll by suppressing the eccentricity of the orbiting scroll from the main shaft.4. The scroll compressor of claim 1 , wherein the slide bush portion comprises:a slide bush inserted and coupled to the bearing of the orbiting scroll; andan inner bush installed between the ...

STATORS AND COILS FOR AXIAL-FLUX DYNAMOELECTRIC MACHINES

A stator assembly includes a stator core defined by an inner periphery and an outer periphery, and a plurality of coils. The stator core includes a stator yoke. Each coil of the plurality of coils includes a first set of segments and a second set of segments each extending between the inner periphery and the outer periphery of the stator core. The first set of segments is arranged to form a first coil portion having a “V” shape and the second set of segments is arranged to form a second coil portion having a “V” shape. The first coil portion and the second coil portion each have a vertex and two ends. The ends of the first coil portion are coupled to the ends of the second coil portion. Other example stators, and example dynamoelectric machines and compressors including one or more stators are also disclosed. 1. An axial-flux dynamoelectric machine comprising:at least one rotor, andat least one stator adjacent the at least one rotor in an axial direction, the at least one stator defined by an inner periphery and an outer periphery, the at least one stator including a stator yoke, a plurality of teeth extending from the stator yoke, and a plurality of coils, at least one of the plurality of coils configured to form a winding, the plurality of teeth spaced apart from one another to define a plurality of slots for receiving the plurality of coils, each coil of the plurality of coils including a first set of segments and a second set of segments each extending between the inner periphery and the outer periphery of the stator, the first set of segments arranged to form a first coil portion having a “V” shape relative to a cross-section of the stator, the second set of segments arranged to form a second coil portion having a “V” shape relative to a cross-section of the stator, the first coil portion and the second coil portion each having a vertex and two ends, and the ends of the first coil portion coupled to the ends of the second coil portion.2. The machine of wherein ...

POWDER METAL WITH SOLID LUBRICANT AND POWDER METAL SCROLL COMPRESSOR MADE THEREFROM

A powder metal formulation includes a solid lubricant and is particularly useful for the production of powder metal scroll compressors. 1. A powder metal scroll compressor comprising:a hub and a scroll adjoined to one another;a powder metal forming at least a portion of the powder metal scroll compressor including the scroll, the powder metal including iron powder, carbon in an amount of less than 0.9% by weight of the powder metal, and a solid lubricant in the powder metal.2. The powder metal scroll compressor of claim 1 , wherein the iron powder and solid lubricant are admixed with one another prior to compaction and sintering of the powder metal scroll compressor.3. The powder metal scroll compressor of claim 1 , wherein the solid lubricant is 0.25% to 3.0% by weight of the powder metal and the powder metal includes iron powder claim 1 , carbon claim 1 , the solid lubricant and is substantially free of other constituents.4. The powder metal scroll compressor of claim 1 , wherein the powder metal further includes copper powder in an amount of less than 3.0% by weight of the powder metal.5. The powder metal scroll compressor of claim 4 , wherein the iron powder claim 4 , the copper powder claim 4 , and the solid lubricant are admixed with one another prior to compaction and sintering of the powder metal scroll compressor and the powder metal includes iron powder claim 4 , carbon claim 4 , copper powder claim 4 , and the solid lubricant and is substantially free of other constituents.6. The powder metal scroll compressor of claim 4 , wherein the copper powder is elemental copper powder.7. The powder metal scroll compressor of claim 1 , wherein the solid lubricant is talc (MgSiO(OH)).8. The powder metal scroll compressor of claim 7 , wherein the talc has a nominal 15 to 25 micron mean particle size (d50).9. The powder metal scroll compressor of claim 1 , wherein the solid lubricant is hexagonal boron nitride (BN).10. The powder metal scroll compressor of claim 9 , ...

COMPRESSOR HAVING SHELL FITTING

A compressor includes a shell, a compression mechanism and a fitting. The shell includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the shell. The fitting is attached to the shell at the opening. Working fluid flowing through the fitting flows to the compression mechanism. The opening is partially defined by a first edge and a second edge. The first edge includes a first planar surface and the second edge includes a second planar surface that faces the first planar surface. A first portion of the fitting extends at least partially into the opening and a second portion of the fitting abuts against the first and second edges. 1. A compressor comprising:a shell including an opening and defining a chamber;a compression assembly disposed within the chamber of the shell; anda fitting attached to the shell at the opening, working fluid flowing through the fitting flows to the compression assembly,wherein the opening is partially defined by a first edge and a second edge, the first edge includes a first planar surface and the second edge includes a second planar surface that faces the first planar surface, a first portion of the fitting extends at least partially into the opening and a second portion of the fitting abuts against the first and second edges.2. The compressor of claim 1 , wherein the opening is a non-circular shape.3. The compressor of claim 1 , wherein the opening has opposing arcuate surfaces claim 1 , and wherein an outer diametrical surface of the fitting abuts against at least one of the opposing arcuate surfaces.4. The compressor of claim 3 , wherein the opposing arcuate surfaces and the first and second edges cooperate to define a circular shape.5. The compressor of claim 1 , wherein the fitting is a suction fitting claim 1 , and wherein working fluid flowing through the suction fitting flows to the compression assembly.6. The compressor of claim 1 , wherein the first portion of the fitting is a first ...

Compressor Having Capacity Modulation

A compressor may include a shell assembly, a first scroll, a second scroll, a piston, and a piston-retention member. The piston engages the first scroll and may be partially received within a recess defined by the shell assembly. The piston and the shell assembly may cooperate to define a pressure chamber. The pressure chamber may be in selective fluid communication with a source of working fluid to control movement of the piston relative to the shell assembly. The piston-retention member may be mounted to the piston and selectively engage a rotationally fixed structure. The piston-retention member allows rotation of the piston relative to the first scroll in a first rotational direction and restricts rotation of the piston relative to the first scroll in a second rotational direction. 1. A compressor comprising:a shell assembly defining a discharge chamber;a first scroll disposed within the shell assembly and including a first end plate and a first spiral wrap extending from the first end plate;a second scroll disposed within the shell assembly and including a second end plate and a second spiral wrap extending from the second end plate, the first and second spiral wraps meshing;a piston engaging the first scroll and cooperating with the shell assembly to define a pressure chamber therebetween, wherein the pressure chamber is in selective fluid communication with a first source of working fluid to control movement of the piston relative to the shell assembly; anda piston-retention member mounted to the piston and selectively engaging a rotationally fixed structure, wherein the piston-retention member allows rotation of the piston relative to the first scroll in a first rotational direction and restricts rotation of the piston relative to the first scroll in a second rotational direction that is opposite the first rotational direction.2. The compressor of claim 1 , wherein a spring engages the piston-retention member and the piston claim 1 , and wherein the spring ...

Dry Dual-Scroll Vacuum Pump

A dry dual-scroll vacuum pump includes a driving assembly and an upper cover located above the driving assembly, wherein the driving assembly includes an output shaft, and a movable disk is eccentrically arranged on the output shaft; two groups of first scroll teeth that are centrally symmetrical are arranged on a side of the movable disk that faces the upper cover; a fixed disk is arranged at a lower end of the upper cover, second scroll teeth that are in one-to-one correspondence with the first scroll teeth are arranged on the fixed disk, and the first scroll teeth are meshed with the second scroll teeth to form a compression cavity; and the upper cover is further provided with an air inlet and an air outlet, which correspond to the compression cavity. 11666246. A dry dual-scroll vacuum pump , characterized by comprising a driving assembly and an upper cover located above the driving assembly , wherein the driving assembly comprises an output shaft () , and a movable disk () eccentrically arranged on the output shaft (); two groups of first scroll teeth () that are centrally symmetrical are arranged on a side of the movable disk () that faces the upper cover;{'b': 4', '23', '24', '4', '24', '23', '5', '1, 'a fixed disk () is arranged at a lower end of the upper cover, second scroll teeth () that are in one-to-one correspondence with the first scroll teeth () are arranged on the fixed disk (), and the first scroll teeth () are meshed with the second scroll teeth () to form a compression cavity; and the upper cover is further provided with an air inlet () and an air outlet (), which correspond to the compression cavity.'}224232121244236. The dry dual-scroll vacuum pump according to claim 1 , characterized in that a tooth tip of each of the first scroll teeth () and the second scroll teeth () is provided with a sealing groove () claim 1 , the sealing groove () is internally provided with an elastic sealing material claim 1 , the first scroll teeth () and the fixed ...

SEALING STRUCTURE AND SCROLL AIR COMPRESSOR HAVING SAME

Disclosed are a sealing structure and a scroll air compressor having the same. The sealing structure includes: an orbiting scroll including an orbiting scroll spiral tooth (), the orbiting scroll spiral tooth () being provided with an orbiting scroll spiral tooth groove (), an orbiting scroll wear-resistant sealing strip () being provided in the orbiting scroll spiral tooth groove (); a stationary scroll including a stationary scroll spiral tooth () matched with the orbiting scroll spiral tooth (), the stationary scroll spiral tooth () being provided with a stationary scroll spiral tooth groove (), a stationary scroll wear-resistant sealing strip () is provided in the stationary scroll spiral tooth groove (), the wear-resistant sealing strip () is divided into sections including a high-temperature and high-pressure section () and a medium-temperature and medium-pressure section (). The sealing structure reduces costs of use and maintenance of the sealing strip; a buffer contact surface of the wear-resistant sealing strip () in contact with a scroll surface is flat, which improves performances of sealing and noise-reduction; a bottom surface of the wear-resistant sealing strip () is equipped with a sealing ring having a cross section in a shape of a circle or a circular tube, which improves the damping and buffering performances; thereby the performance of the air compressor is improved, and the use cost of the air compressor is also reduced. 1. A sealing structure , comprising:an orbiting scroll comprising an orbiting scroll spiral tooth, wherein the orbiting scroll spiral tooth is provided with an orbiting scroll spiral tooth groove, an orbiting scroll wear-resistant sealing strip is provided in the orbiting scroll spiral tooth groove, the orbiting scroll wear-resistant sealing strip comprises the orbiting scroll wear-resistant sealing strip in a high-temperature and high-pressure section and the orbiting scroll wear-resistant sealing strip in a medium-temperature ...

SCROLL COMPRESSOR

A scroll compressor includes a refrigerant suction pipe coupled to a discharge cover or a fixed scroll through a casing in a radial direction, a suction passage communicating the refrigerant suction pipe with a compression chamber, and a suction passage opening and closing valve disposed inside the suction passage to be slidable in an axial direction so as to selectively open or close the suction passage. Accordingly, when the compressor is stopped, oil or refrigerant in the casing can be restricted quickly so as not to flow back to the refrigerant suction pipe through a compression unit. 1. A scroll compressor comprising:a casing;a main frame provided in the casing;a fixed scroll having (i) a fixed end plate coupled to the main frame, (ii) a fixed wrap defined at a first side surface of the fixed end plate, and (iii) a discharge port defined through the fixed end plate at a side of the fixed wrap;an orbiting scroll having (i) an orbiting end plate located between the main frame and the fixed scroll, and (ii) an orbiting wrap defined at a side surface of the orbiting end plate, the orbiting wrap being configured to engage with the fixed wrap to thereby define a compression chamber in engagement with the fixed wrap;a discharge cover defining a discharge space that accommodates an outlet of the discharge port, the discharge cover being coupled to a second side surface of the fixed end plate opposite to the first side surface of the fixed end plate;a refrigerant suction pipe coupled to the discharge cover or the fixed scroll through the casing in a radial direction;a suction passage in fluid communication with the refrigerant suction pipe and the compression chamber; anda suction passage opening and closing valve provided inside the suction passage and configured to slide in an axial direction to thereby selectively open or close the suction passage.2. The scroll compressor of claim 1 , wherein the refrigerant suction pipe is coupled to the discharge cover or the fixed ...

SNAP-IN TEMPERATURE SENSOR FOR SCROLL COMPRESSOR

A temperature sensor on an outer surface of an upper shell at a location is associated with a discharge chamber. The temperature sensor includes electronics molded into an overmolded plastic and includes a spring member. The spring member snaps into a sensor housing connected to the outer surface. 1. A scroll compressor comprising:a housing including a cylindrical lower portion and an upper cover, said upper cover having an outer surface;a scroll compressor pump unit including a first scroll member having a base and a generally spiral wrap extending from its base, and a second scroll member having a base and a generally spiral wrap extending from its base, said wraps of said first and second scroll members interfitting to define a compression chamber, and said first scroll member having a discharge port;an electric motor for driving a drive shaft to rotate and, in turn, cause said second scroll member to orbit relative to said first said scroll member to decrease a volume of said compression chambers such that a refrigerant is entrapped and is driven to communicate with said discharge port;a discharge chamber defined inwardly of said upper cover and communicating with said discharge port; anda temperature sensor connected to said outer surface at a location associated with said discharge chamber, said temperature sensor including a spring member, said spring member snapping into a sensor housing connected to said outer surface.2. The scroll compressor as set forth in claim 1 , wherein said sensor housing and said spring member are metallic.3. The scroll compressor as set forth in claim 1 , wherein said sensor housing has a front opening for receipt of said sensor and such that said sensor can be inserted and removed from said front opening.4. The scroll compressor as set forth in claim 1 , wherein said sensor includes an electronic component in contact with said outer surface.5. The scroll compressor as set forth in claim 4 , wherein said electronic component is a ...

SCROLL COMPRESSOR

A scroll compressor includes a first chamfered portion formed at a distal end potion of a spiral blade of a fixed scroll, a second chamfered portion formed at a distal end portion of a spiral blade of an orbiting scroll, a third chamfered portion formed at a bottom portion of the spiral blade of the fixed scroll, and a fourth chamfered portion formed at a bottom portion of the spiral blade of the orbiting scroll. An expression of 0<{(Av+Av)/2}/Ac<1×10is satisfied where a sectional area of a space between the first chamfered portion and the fourth chamfered portion is defined as Av, a sectional area of a space between the second chamfered portion and the third chamfered portion is defined as Av, and a sectional area of a compression chamber is defined as Ac. 1. A scroll compressor , comprising:a fixed scroll including a first base plate portion and a first spiral blade provided to stand on one surface of the first base plate portion;an orbiting scroll including a second base plate portion and a second spiral blade provided to stand on a surface of the second base plate portion opposite to the fixed scroll, and is configured to perform an orbiting motion with respect to the fixed scroll, the first spiral blade and the second spiral blade being in mesh with each other to form a compression chamber;a first chamfered portion formed at each of both corner portions of a distal end portion of the first spiral blade;a second chamfered portion formed at each of both corner portions of a distal end portion of the second spiral blade;a third chamfered portion formed on each of both sides of a bottom portion of the first spiral blade, the third chamfered portion having a same shape as a shape of the second chamfered portion; anda fourth chamfered portion formed on each of both sides of a bottom portion of the second spiral blade, the fourth chamfered portion having a same shape as a shape of the first chamfered portion,a chamfer dimension of the first chamfered portion and a ...