Patent ID: 6837695
Filing Date: 2005-01-04
Classification: F04B,Y10T

Abstract:
1. A reciprocating refrigerant compressor comprising: a cylinder block having a cylinder bore, a compression chamber within the cylinder bore, a cylinder head which includes a low-pressure chamber formed therein for receiving refrigerant gas to be drawn into the compression chamber, and which is coupled to one end face of the cylinder block, a valve plate which is arranged between the compression chamber and the low-pressure chamber, and which includes an inlet port for guiding the refrigerant from the low-pressure chamber into the compression chamber, and an inlet valve having an end for opening and closing the inlet port, wherein the end of the inlet valve has a shape which corresponds to a shape of the inlet port, wherein the shape of the inlet port is non-circular, at least two portions of a periphery of the inlet port touch an inscribed circle, and a maximum diameter of the inlet port is larger than a diameter of the inscribed circle of the inlet port, wherein a center of the inscribed circle of the inlet port is located on a center line of the inlet valve, and wherein a length of the inlet port in a direction perpendicular to the center line of the inlet valve is longer than a length of the inlet port in a direction along the center line of the inlet valve.