Abstract: In a hermetic reciprocating compressor, the discharge line functions as a torsion spring in supporting the compressor and motor within the hermetic shell. To prevent excessive deflection of the discharge line while maintaining its torsion spring function, the discharge line is restrained radially and axially while permitting circumferential movement in a helical portion which defines the torsion spring.

Abstract: In a low side hermetic compressor, a small portion of the compressed refrigerant gas is diverted and discharged into the oil sump through an orifice into the upper level of the oil in the sump. This results in a supersaturated solution of refrigerant in oil in the upper level which drives the refrigerant out of the oil, thereby creating froth which provides sound reduction without disturbing the lower level which remains stratified. A check valve is provided for preventing reverse flow while requiring a predetermined pressure differential for diversion.

Abstract: In a reciprocating compressor, the separator plate separating the suction and discharge plenums acts as a spring relative to the valve plate assembly. Under liquid slugging conditions the valve plate moves against the biasing force of the separator plate to establish a relief passage between the piston cylinder and the suction plenum.