Patent ID: 6508634
Filing Date: 2003-01-21
Classification: F04B

Abstract:
A compressor; whereina crank chamber is formed inside a housing and a drive shaft is supported so as to be able to rotate, cylinder bores are formed in a cylinder block, each piston is accommodated in each cylinder bore so as to be able to reciprocate therein, a cam plate is connected to the drive shaft so as to operate, the pistons are connected to the cam plate so as to operate, and the pistons reciprocate according to the rotation of the drive shaft so that refrigerant gas is sucked and discharged; and wherein the cylinder block, which is positioned between the front housing and the rear housing, comprises at least two of a suction space through which refrigerant gas sucked into the cylinder bores passes, a discharge space through which refrigerant gas discharged from the cylinder bores passes, a suction side check valve which is positioned upstream the suction space and also prevents refrigerant gas introduced into the suction space from reversely flowing upstream the suction space, a discharge side check valve which is positioned downstream the discharge space and also prevents refrigerant gas discharged from the discharged space to the downstream side thereof from reversely flowing into the discharge space, an oil separator which separates a mist of lubrication oil, mixed with refrigerant gas, from the refrigerant gas, and a control valve which varies the pressure in the crank chamber which accommodates the cam plate, between the cylinder bores in the cylinder block.