The present invention is directed to an improved valved discharge mechanism of a refrigerant compressor. The compressor includes a compressor housing (11) having at least one chamber (26) in which successive strokes of sucking, compressing and discharging a refrigerant gas is repeatedly performed. The chamber (26) is linked to an outside chamber (30) through a conduit formed in the compressor housing. A valved discharge mechanism (13) is disposed at one end opening of the conduit opening to the outside chamber. The valved discharge mechanism (13) includes a discharge reed valve (133) which blocks and opens one end opening of the conduit (30a) by means of the bending movement thereof. The discharge reed valve (133) has a certain value of elastic modulus which lets the discharge reed valve (133) keep blocking one end opening of the conduit (30a) until the pressure in the chamber reaches a certain value. A stopper member (35) is disposed at the outside chamber (30) to limit the bending movement of the discharge reed valve (133) toward the direction of leaving from one end opening of the conduit (30a). An auxiliary discharge reed valve (36) having a small curvature is proximately disposed at the discharge reed valve (133) opposite to one end opening of the conduit (30a) so as to enhance value of elastic modulus of the discharge reed valve (133) while the discharge reed valve (133) is bent toward the direction of leaving from one end opening of the conduit (30a). <IMAGE>
