Patent ID: 6662582
Filing Date: 2003-12-16
Classification: F04B,F25B

Abstract:
A displacement control valve for controlling an amount of refrigerant conducted out from a pressure-regulating chamber into a suction chamber, such that a differential pressure between pressure in the suction chamber and pressure in a discharge chamber is held at a predetermined differential pressure, to thereby change an amount of the refrigerant discharged from a variable displacement compressor,characterized by comprising: a valve section for opening and closing a refrigerant passage between the pressure-regulating chamber and the suction chamber to control the amount of refrigerant conducted out from the pressure-regulating chamber to the suction chamber; a differential pressure-sensing section that is formed separately from the valve section, for sensing the differential pressure between the pressure in the discharge chamber and the pressure in the suction chamber, thereby controlling a valve travel of the valve section; and a solenoid section for having a current value supplied thereto changed to change a solenoid force thereof applied to a valve element of the valve section to thereby change the predetermined differential pressure so as to control a discharge amount of the refrigerant.