Abstract: A suction sound damper for a refrigerant compressor is disclosed, having an inlet, which is arranged to be connected to a suction port, and an outlet, which is arranged to be connected to the refrigerant compressor, and also having at least one damping volume. It is desirable for a suction sound damper of that kind to be of simple and inexpensive construction, and to contribute to increasing the efficiency of a refrigerant compressor. For that purpose, it is formed from a first and second half which define an internal space in which the damping volume is arranged, the first half having projecting into the internal space a gas deflection wall which, at least over sections thereof, forms a lateral limitation of a flow path free from throttle points between inlet and outlet.

Abstract: A refrigerant compressor has a reciprocating piston with a projection extending therefrom is disposed in a cylinder. The cylinder has an end wall with a discharge opening operably closeable by a discharge valve. The projection is disposed on an end face of the piston and extends into the opening of the discharge valve when the piston is in the region of its end position. Extending the projection into the discharge valve enables gas remaining in the region above the piston and in the region of the discharge opening to be displaced out of the discharge valve. The projection has an asymmetrical construction with a circumferential wall has a gradient changing along the circumference of the wall. The discharge valve seat and the flow channel in the region of the discharge valve are operably contoured to prevent turbulent flow from occurring when gas is discharged from the discharge valve.