Patent ID: 6019027
Filing Date: 2000-02-01
Classification: F04B

Abstract:
A refrigerant compressor comprising:a cylinder block having a plurality of cylinder bores axially formed therethrough;a plurality of pistons slidably received in said cylinder bores, respectively;a housing secured to said cylinder block and having a crankcase defined therein;a drive shaft extending through said crankcase and having one end on a cylinder block side;a torque-transmitting member received within said crankcase and mounted on said drive shaft, for rotation in unison with said drive shaft for converting torque transmitted from said drive shaft into reciprocating motion of each of said pistons; anda bearing supporting said one end of said drive shaft;said cylinder block having:a bearing-receiving chamber having said bearing received therein,a lubricant-collecting groove formed at a rim of a crankcase-side opening of each of at least one of said cylinder bores in a manner such that said lubricant-collecting groove is open to said crankcase, for collecting lubricant therein, anda lubricant supply passage connecting between said lubricant-collecting groove and said bearing-receiving chamber to thereby supply said lubricant collected in said lubricant-collecting groove to said crankcase,said lubricant collected at a bottom of said crankcase being drawn up and splashed within said crankcase by rotation of said torque-transmitting member.