A compressor includes a shell assembly, a muffler plate and a compression mechanism. The shell assembly has a suction chamber and a discharge chamber. The muffler plate is disposed within the shell assembly and separates the suction chamber from the discharge chamber. The muffler plate includes a hub having a circumferentially extending inner portion and a circumferentially extending intermediate portion. The circumferentially extending inner portion defines a discharge passage extending therethrough. The circumferentially extending intermediate portion has a slot formed in a surface thereof. The slot extends at least partially around the circumferentially extending intermediate portion. The compression mechanism is disposed within the suction chamber and provides working fluid to the discharge chamber via the discharge passage of muffler plate.

A scroll compressor including a housing, a motor provided in the housing, a rotary shaft rotated by the motor, an orbiting scroll configured to orbit in conjunction with the rotary shaft, and a fixed scroll configured to define compression chambers together with the orbiting scroll, in which the housing includes a center housing penetrated by the rotary shaft, a front housing configured to define, together with the center housing, a motor accommodation space that accommodates the motor, and a rear housing configured to define a discharge chamber that accommodates a refrigerant discharged from the compression chamber, and an injection valve assembly provided between the fixed scroll and the rear housing, and the injection valve assembly includes an anti-leakage means and an injection valve configured to open or close an injection flow path that guides the refrigerant, which is introduced from outside of the housing, to the compression chamber.

A rotary compressor of an embodiment has a rotating shaft, an electric motor, a compression mechanism, a balancer, and a balancer cover. The compression mechanism has a cylinder, a main bearing, and a sub-bearing. The balancer is provided on the rotating shaft on a second side of the sub-bearing in an axial direction thereof. The balancer cover covers the balancer. A lubricating oil supply path that opens on a second side end face in the axial direction is provided in the rotating shaft. A supply hole that allows the supply path to communicate with the outside of the balancer cover is formed in the balancer cover at a position facing the supply path in the axial direction. A seal mechanism that seals between the balancer cover and the rotating shaft is provided between the balancer cover and the rotating shaft while allowing relative movement between the balancer cover and the rotating shaft in the axial direction.

An annular sliding component has a sliding surface relatively sliding with eccentric rotation. The sliding surface is provided with a plurality of grooves each of which is open to a fluid space on at least one of an inner diameter side and an outer diameter side of the sliding surface and arranged in a circumferential direction. The groove is partially defined by a first side wall surface formed along the circumferential direction of the sliding surface and a second side wall surface connected to the first side wall surface and formed along a radial direction of the sliding surface.

Disclosed is a scroll type compressor having an Oldham's ring having an asymmetrical structure with respect to a long or minor axis thereof.

A compressor includes a shell, a first scroll member, a second scroll member and a sealing assembly. The shell defines a first pressure region and a second pressure region. The first scroll member is disposed within the shell and includes a first end plate and a first scroll wrap. The second scroll member includes a second end plate and a second scroll wrap. The second scroll wrap meshingly engages the first scroll wrap to define a compression chamber therebetween. The seal assembly fluidly separates the first and second pressure regions from each other. The seal assembly includes a first plate, a second plate, a first sealing member and a second sealing member. The first sealing member is sealingly engaged with the first plate and the second plate. The second sealing member is sealingly engaged with the first sealing member and the first plate.

A stationary scroll plate for use in a scroll compressor is described. The stationary scroll plate comprises a base plate having a first side and a second side, wherein the second side opposes the first side; a spiral wrap formed at the first side of the base plate, wherein the spiral wrap is adapted to interact with a corresponding spiral wrap of an orbiting scroll plate to form a compression chamber; an injection channel formed within the base plate, the injection channel providing an injection path for injection of fluid into the compression chamber; a recess located at the second side; an insert placed within the recess, wherein the insert forms a cooling chamber within the recess; an inlet channel via which the cooling chamber is connected to the injection channel; and an outlet channel via which the cooling chamber is connected to the inside of the spiral wrap.

A rotary compressor is provided for which a vane slot is formed in each cylinder, a suction port is disposed at one side of the vane slot in a circumferential direction with a partition wall interposed therebetween, and at least one elastic portion is formed in a penetrated or recessed manner at at least one circumferential side surface of the partition wall or between circumferential side surfaces. Accordingly, an elastic strain of the partition wall may increase to reduce friction loss between the vane slot and a vane, a sealing distance may be secured between axial side surfaces of the partition wall to prevent refrigerant leakage between the vane slot and the suction port, an amount of oil or refrigerant stored between the vane and the vane slot may be increased by virtue of the at least one elastic portion formed on an inner surface of the vane slot defining the partition wall, thereby improving lubricity.

An arrangement for plug-connecting electrical connections through a housing, in particular a device for driving a compressor. The arrangement exhibits at least one plug-in connection with at least one plug-in connector for transmitting electrical energy, as well as one mounting element for mounting the at least one plug-in connector. The mounting element can be fixed on the housing. The mounting element exhibits on one inner surface of the housing, which encloses the volume, an opening for mounting a fastening element for fixing the mounting element on the housing. The opening is produced in such a way that it starts from the inner surface, extends into the mounting element and ends in the mounting element. The fastening element is arranged in such a way that it is inserted into the opening from the volume enclosed by the housing through a pass-through opening, that is produced in the housing.

Aspects of the present invention relate to a stator component for a pump housing. The stator component has a plurality of fluid inlet channels for conveying fluid to respective pumping chambers. The fluid inlet channels each have an inlet port for conveying fluid into the pumping chamber. A plurality of fluid transfer channels are provided for conveying fluid to a respective one of the fluid inlet channels. The fluid transfer channels each have an inlet for receiving pumped fluid. The stator component is adapted to receive at least one sealing member for inhibiting the conveyance of fluid into an associated one of the pumping chambers. Aspects of the present invention relate to a pump housing, a cover plate and a pump. Aspects of the present invention also relate to a method of converting a stator component.