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.

Refrigerant compressor with a hermetically sealed housing and a drive unit in the interior of the housing. At least one damping element is in the housing is connected to the drive unit. The damping element has three contact areas separated from each other by an edge, in which in a first deflected state of the drive unit a first contact area contacts a first inner surface area of the housing, wherein in a second deflected state a second contact area contacts a second inner surface area of the housing, but the first contact area does not contact the first inner surface area, wherein in a third deflected state of the drive unit a third contact area contacts a third inner surface area, but the first and second contact areas do not contact the first and second inner surface areas, respectively.

A scroll compressor is provided that may include a casing, a drive motor, an orbiting scroll, a non-orbiting scroll, and a floating plate provided with a cover portion to cover an area between an outer wall portion and an inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, and a valve accommodating portion that extends from the cover portion so as to accommodate a discharge valve configured to open and close a discharge port. Accordingly, structure for forming a back pressure chamber is simplified to thereby reduce the number of components and man-hours required for assembly.

A rotary compressor includes a compression device including a compression space to accommodate a refrigerant introduced through an inlet, and configured to compress the refrigerant and to discharge the refrigerant to an outlet, a driving device to drive the compression device, a flange member to partition an inner portion of the case into a low-pressure region and a high-pressure region, and a muffler member disposed on a surface of the flange member to form a first space to store oil and a second space. The flange member includes a first hole communicating with the second space to allow the low-pressure region to communicate with the compression space, the muffler member includes a second hole which forms part of a refrigerant flow path, and at least one of the flange member and the muffler member includes a third hole which forms part of an oil flow path.

A compressor includes a drive mechanism and a compression mechanism having a discharge passage and a plurality of members disposed to overlap. The discharge passage includes a muffling chamber, an inflow passage connected to an inflow end of the muffling chamber, and an outflow passage connected to an outflow end of the muffling chamber. The muffling chamber is formed across two or more of the plurality of members. The compression mechanism includes first and second cylinders, and a second closing member that covers an opening surface a of the first cylinder and an opening surface of the second cylinder. The muffling chamber includes an expansion chamber having a passage sectional area larger than the inflow and outflow passages. The expansion chamber is formed across the second closing member, and the first and second cylinders.

A compressor may include a shell assembly, orbiting and non-orbiting scrolls, a bearing housing, a bushing, a damper, and a fastener. The bearing housing includes a first aperture. The bushing may include an axial end abutting the bearing housing. The bushing may extend through a second aperture of the non-orbiting scroll. The bushing may include a third aperture. The damper may be received in a pocket that may be defined by and disposed radially between an outer diametrical surface of the bushing and an inner diametrical surface of the non-orbiting scroll. The damper may be at least partially disposed within the second aperture and may encircle the second portion of the bushing. The fastener may include a shaft portion and a flange portion. The shaft portion may extend through the third aperture and into the first aperture. The flange portion may contact a first axial end of the damper.

According to one embodiment, a compressor includes cylinders, a rotating shaft, bearings, and discharge valve mechanisms. Each of the discharge valve mechanisms includes a discharge valve and a valve presser. Regarding the valve pressers, each of the valve pressers includes a main body part lengthwise along the longitudinal direction of the discharge valve, and at least one of the valve pressers includes a fixed part extending in a direction intersecting the longitudinal direction of the discharge valve relatively to the main body part and fixed to the bearing.

A compressor includes a drive mechanism and a compression mechanism having a discharge passage and a plurality of members disposed to overlap. The discharge passage includes a muffling chamber, an inflow passage connected to an inflow end of the muffling chamber, and an outflow passage connected to an outflow end of the muffling chamber. The muffling chamber is formed across two or more of the plurality of members. The compression mechanism includes first and second cylinders, and a second closing member that covers an opening surface a of the first cylinder and an opening surface of the second cylinder. The muffling chamber includes an expansion chamber having a passage sectional area larger than the inflow and outflow passages. The expansion chamber is formed across the second closing member, and the first and second cylinders.

The present disclosure relates to a compressor including a branch part for reducing vibration and noise caused by a refrigerant flowing inside a muffler by expanding an enclosed space formed by a compression part and the muffler in the direction of a rotation axis.

A shunt-enhanced decompression and pulsation trap (SEDAPT) for a screw compressor assists internal compression (IC), reduces gas pulsation and NVH (Noise, Vibration & Harshness), and improves off-design efficiency, without using a slide valve and/or a serial pulsation dampener. The SEDAPT includes an inner casing, e.g., an integral part of the compressor chamber, and an outer casing, e.g., surrounding part of the inner casing near the compressor discharge port, forming at least one diffusing chamber with an outflow orifice or nozzle equipped with an ODV (one-direction valve) at the outflow exit and a feedback region that provides a feedback outflow loop between the compressor chamber and the compressor discharge port. The SEDAPT automatically bleeds or compensates cavity pressure to meet different outlet pressures, eliminates or reduces energy waste, gas pulsations and NVH associated with any over-compression and under-compression before the discharge port opens.