Patent ID: 7156626

Claim:
A double side action reciprocating compressor, comprising: a casing having a suction pipe and a discharge pipe operatively connected to the casing at a first radial side and a second radial side of the casing with respect to a length of the casing; a first reciprocating motor being installed at a first side of the casing, said first reciprocating motor generating a first horizontal reciprocating motive force; a second reciprocating motor being installed at a second side of the casing, said second reciprocating motor generating a second horizontal reciprocating motive force parallel and opposite to the first horizontal reciprocating motive force; a cylinder being integrally formed in an inner circumference of the casing in a space between the reciprocating motors; a first piston and a second piston operatively connected with respective moving magnets interposed between slits of the reciprocating motors and inserted into a through hole formed in the cylinder to permit a sliding motion therein responsive to the first and second horizontal motive forces, respectively to compress a working fluid; a suction valve assembly being positioned in a suction passage of the cylinder to operatively control a suction flow of fluid through the suction passage, wherein said suction flow of fluid is perpendicular to the first and second horizontal reciprocating motive forces of the reciprocating motors; and a discharge valve assembly being positioned in a discharge passage of the cylinder to operatively control a discharge flow of fluid through the discharge passage, wherein said discharge flow of fluid is perpendicular to the first and second horizontal reciprocating motive forces of the reciprocating motors, wherein the suction valve assemblies further comprise: a suction adapter including a suction hole connected to the suction pipe and press-fitted with the suction passage formed in the cylinder; and a disk-shaped suction valve positioned in a space formed between the leading end of the suction adapter and the suction hole, and wherein the suction valve is in the form of a disk including several gas suction grooves on the outer circumference of the suction valve and the diameter of a virtual circle connecting the inner circumference of the gas suction groove is formed to be smaller than the inner diameter of the inside end of the suction passage.