Patent ID: 7121811

Claim:
A capacity control valve for a variable displacement compressor, for controlling an amount of refrigerant introduced from a discharge chamber into a pressure-regulating chamber, such that differential pressure between a pressure in a suction chamber and a pressure in the discharge chamber is held at a predetermined differential pressure, to thereby change a volume of the refrigerant discharged from the variable displacement compressor, comprising: a first valve inserted into a first refrigerant passage between a first port communicating with the discharge chamber and a second port communicating with the pressure-regulating chamber, for opening and closing the first refrigerant passage; and a second valve inserted into a second refrigerant passage between the second port communicating with the pressure-regulating chamber and a third port communicating with the suction chamber, a valve hole of the second valve having a larger diameter than a valve hole of the first valve, for opening and closing the second refrigerant passage in conjunction with the first valve.