Abstract: A scroll type fluid compressor 10 has a housing 12 including a front section 14 and a rear section 16, an inlet port 112 and an outlet port 114. The rear section 16 of the housing includes an integral fixed scroll 18 with a discharge aperture 90 in the center and an integral exhaust cavity 88. A one way discharge valve 92 including a tubular valve body 95 is pressed into the scroll discharge aperture 90, extends across the exhaust cavity and has one end received in a recess 94 in a boss 96 on a wall of the exhaust cavity 88. An orbital scroll 24 is driven in an orbital path by a crank shaft 74 and cooperates with the fixed scroll 18 to compress fluid. An axial thrust and rotation prevention assembly 46 prevents rotation of the orbital scroll.

Abstract: An improved valve assembly and method of making same is disclosed which valve assembly is particularly well suited for use in refrigeration compressors. The valve assembly includes three plate members which may be easily stamped from sheet stock and which are assembled together and subjected to an oven brazing process to thereby provide a unitized valve plate having openings defining both suction and discharge valve seats.

Abstract: There is disclosed an improved discharge valve assembly for compressors utilizing a disc-like pressure responsive discharge valve, the assembly comprising hardened seats on the valve and cylinder head, a compression spring disposed therebetween urging the valve in a closing direction, and a spring guide surrounding the spring and providing a continuous annular stop surface for limiting opening movement of the valve, whereby wear is reduced and valve lift controlled. In an alternative embodiment the assembly operates between the valve and a bridge member rather than the cylinder head.