Patent ID: 6913450

Claim:
A suction valve coupling structure for a reciprocating compressor, wherein the reciprocating compressor comprises: a piston for linearly reciprocating in a cylinder with an armature of a reciprocating motor and having a refrigerant flow passage connected to the end portion surface thereof; and a suction valve arranged at the end portion surface of the piston for opening and closing the refrigerant flow passage, said suction valve coupling structure comprising; a welding member mounting recess having a predetermined depth formed at the end portion surface of the piston to mount the suction valve thereat; and a welding member welded to the suction valve inserted into the welding member mounting recess, wherein a diameter of the welding member mounting recess becomes larger from an inner portion thereof toward an outer portion contacted with the atmosphere so as to easily exhaust bubble generated at the time when leaden metal is melted.