Scroll type compressor having a discharge valve retainer with a back pressure port

摘要

A scroll type compressor includes a check valve (42) having a valve element (63) disposed in a valve chamber (36, 60) and moveable in the vertical direction. A back pressure port (60a) having one end opening at a retainer surface (62a) and the other end communicating with a high-pressure side chamber (3, 43) is disposed in a retainer having the retainer surface thereon which is engaged by the valve element (63) when the check valve is in the open position.