MOTOR COMPRESSOR

摘要

Reciprocating piston compressor of the hermetically sealed type has the compressor assembly (14) and motor stator (16) independently and directly supported by the outer shell (12). The compressor assembly uses the outer shell to retain the head and valve assembly in assembled relationship with the compressor body to eliminate the need for separate fasteners. A special cam drive arrangement provides improved operating efficiency while providing a longer time period for exhausting compressed refrigerant from the cylinder as compared with more complicated scotch yoke drive arrangements. The cam drive mechanism (Fig. 4) uses a cam member (132) which acts as a combination wrist pin and connecting rod and which is received within an opening (106) in the piston. A discharge silencer (32) has an inlet directly connected to the compressor body (56) to eliminate the need for separate tubing to conduct discharge gas from the compression cylinder 72.