Abstract: A compressor having a housing formed by joining a plurality of housing components. A plurality of muffler elements are formed integrally with the housing components along the periphery of the housing. A muffler chamber is defined in the housing by coupling the housing components to one another. A large volume chamber and a small volume chamber are defined in the muffler chamber and connected to each other. An inlet is provided in at least one of the muffler elements for drawing the gas in the discharge chamber into the large volume chamber. An outlet is provided in the muffler elements for discharging the gas in the small volume chamber into the external circuit. The arrangement and construction of the housing is such that the pressure pulses in the discharge gas are reduced, and thus vibration and noise are reduced.

Abstract: A multi-cylinder piston type compressor having an axially extending cylinder block with cylinder bores formed therein and closed on at least one axial end by a housing defining therein suction and discharge chambers and provided therein with a reciprocative piston mechanism for drawing, compressing, and discharging a refrigerant gas. The compressor also has a valve plate member arranged between the cylinder block and the housing for defining therein suction ports and discharge ports, a suction valve sheet member defining therein suction valves openably closing the suction ports and discharge apertures for introducing the refrigerant gas after compression from the cylinder bores into the discharge chamber of the housing via the discharge port of the valve plate member. The compressor also has an internal pulsation and noise suppression unit provided by extensions formed in the suction valve sheet member and adjacent to the discharge ports of the valve plate member.

Abstract: A swash plate type refrigerant compressor having a swash plate supported on a rotatable drive shaft, a plurality of double-headed pistons engaged with the swash plate so as to be reciprocated in cylinder bores of the compressor is disclosed herein. The swash plate has formed round and throughout its circumferential periphery an annular groove. An annular ring member is received in the groove, said ring member having an outer diameter larger than the diameter of said swash plate and forming with the bottom annular surface of said groove a substantially annular clearance at least during the operation of the compressor.

Abstract: A swash plate type compressor having a pair of axially combined front and rear cylinder blocks forming therein a plurality of cylinder bores and a swash plate chamber into which an oil-contained refrigerant is introduced from an air-conditioning circuit, a drive shaft centrally rotatably mounted in the combined cylinder block, a swash plate having sliding contact faces oblique to an axis of the drive shaft, and supported on the drive shaft so that the swash plate is rotated within the swash plate chamber, compressing double-headed pistons slidably fitted in the cylinder bores, shoes intervened between the swash plate and the pistons for causing reciprocating motions of the pistons in response to rotating motion of the swash plate, and a shoe and swash plate lubricator for constantly supplying a lubricating oil component contained in the refrigerant gas between the swash plate and the shoes.

Abstract: A piston type compressor having a cylinder block in which a plurality of compression chambers permitting a plurality of pistons to be reciprocated so as to compress a refrigerant gas pumped from a suction chamber formed in an end housing into the compression chambers through suction ports of a valve plate, openably closed by a suction valve mechanism with a plurality of suction reed valves, and to discharge the compressed refrigerant gas from the compression chambers into a discharge chamber formed in the end housing through discharge ports of the valve plate, are openably closed by a discharge valve mechanism having a plurality of discharge reed valves.

Abstract: A swash plate type compressor having a plurality of double-headed pistons reciprocating in axially extending cylinder bores of a cylinder block unit for compressing refrigerant gas, in which refrigerant gas returning from a refrigerating circuit is initially introduced into a swash plate chamber enclosed by a pair of axially opposed planar walls and a substantially cylindrical wall of the cylinder block unit, and is circularly flown along a pair of circular refrigerant passageways formed in both planar walls of the swash plate chamber before being drawn into the cylinder bores so that a circularly flowing refrigerant gas lubricates moving elements, such as shoes and radial and thrust bearings, of the compressor.

Abstract: A piston type compressor having a cylinder block in which a plurality of compression chambers permit a plurality of pistons to be reciprocated so as to compress a refrigerant gas pumped from a suction chamber formed in an end housing into the compression chambers through suction ports of a valve plate, openably closed by a suction valve mechanism with a plurality of suction reed valves oscillatorily movable with regard to two bearing points, respectively, and to discharge the compressed refrigerant gas from the compression chambers into a discharge chamber formed in the end housing through discharge ports of the valve plate, openably closed by a discharge valve mechanism having a plurality of discharge reed valves oscillatorily movable with regard to two bearing points, respectively.

Abstract: A swash plate type compressor comprising a swash plate and a plurality of double headed pistons reciprocatingly moved by the swash plate through a shoe-and-socket joint. The shoe and socket are shaped in a mating semi-spherical convex and concave configuration which has a center of curvature which is offset from the axis of the piston circumferentially of the swash plate to mitigate the swinging motion of the pistons and decrease the noise of the compressor.

Abstract: A shoe-and-socket joint, which is incorporated into a swash plate type compressor as a drive force transmitting unit arranged between a rotational swash plate and each of a plurality of reciprocal pistons, has a shoe provided with a spherically formed contact face and a recessed curved socket, for example, an ellipsoidal socket, deviated from a spherical form. Therefore, there is provided a wedge-shaped clearance between the socket and the shoe. An oil containing refrigerant gas flows enough into between the socket and the shoe to achieve a good lubrication.