Piston type compressor with improved suction reed valve stopper

Claim 1

A piston type compressor including: a cylinder block having therein a plurality of axial cylinder bores formed as compression chambers for permitting pistons therein to be reciprocated to compress a refrigerant gas; at least a housing closing an axial end of said cylinder block for forming a suction chamber receiving therein a refrigerant gas to be compressed and a discharge chamber for receiving a compressed refrigerant gas; a valve plate having an inlet port for introducing the refrigerant gas to be compressed from an outer air-conditioning circuit into said suction chamber, a suction port for fluidly communicating between said suction chamber and said compression chambers, an outlet port for discharging the compressed refrigerant gas from said discharge chamber toward the outer air-conditioning circuit, and a discharge port for fluidly communicating between said discharge chamber and said compression chambers; a discharge valve means arranged on one end face of said valve plate for openably closing said discharge port of said valve plate; a suction reed valve means arranged on the other end face of said valve plate and having a plurality of suction reed valves adapted to be moved between a closing position being in contact with said valve plate for closing said suction port and an opening position apart from said valve plate for opening said suction port, each suction reed valve having a substantial length extending in a diametrical direction of a corresponding one of said cylinder bores and being formed with a free end thereof, and; a stop means formed as a plurality of recessed seats in said axial end face of said cylinder block for stopping said free end of each of said plurality of suction reed valves when each said suction reed valve is moved to the opening position thereof, wherein said each recessed seat of said stop means is formed with a first seat portion against which a first corner of said free end of said each suction reed valve abuts while being separated from said other end face of said valve plate by a first distance, and a second seat portion against which a second corner of said free end of said each suction reed valve abuts while being separated from said other end face of said valve plate by a second distance different from said first distance.