Abstract: A compressor rotary mounting shaft for rotatably mounting a compressor rotor is supported by a bearing surface defined by a bearing surface hole through a compressor cylinder block. A portion of the rotary mounting shaft is tapered, and the tapered portion of the rotary mounting shaft confronts a portion of the bearing surface which is cooled by refrigerant gas and which is cooled by refrigerant gas and which contracts during operating of the compressor. The tapered portion of the rotary mounting shaft ensures that sufficient clearance remains between the rotary mounting shaft and the portion of the bearing surface hole that contracts during compressor operation so as to allow the formation of a lubricating oil film to prevent shaft locking due to thermal contraction of the bearing surface hole or eccentric driving of the rotary mounting shaft.

Abstract: A mounting mechanism for mounting a compressor in an engine compartment of a car comprises at least two plate members fixed to and projecting outwardly of the compressor at circumferentially spaced locations thereof, and at least two mount stay members fixed in the engine compartment and extending towards the compressor so as to lie in superposed face-to-face relationship with respective ones of the plate members. A bolt extends through one pair of superposed plate and mount members so as to pivotally mount the compressor for pivotal turning movement about the bolt to thereby enable adjustment of the position of the compressor. An elongate slot is formed in either the plate member or mount member of another pair of superposed plate and mount and the inner surface of the slot is provided with a toothed surface.

Abstract: An oil separator which is accomodated within a compressor utilized in a comparatively small refrigerator such as an automobile air conditioner. Generally, an oil separator is arranged next to an outlet port of the compressor in order to separate lubricant intermixed in the compressed gaseous refrigerant therefrom. The oil separator is provided with a double barrelled cylindrically shaped separation chamber, the one end of which is blocked and the other end of which is connected with multi layered filter elements and further is blocked by an end plate thereon. The separation chamber is provided with a gas conduit opening in the tangential direction thereof to communicate with a passage. Furthermore a pipe is projected extending over one end of said separation chamber to a pressure chamber in the compressor.