CAPACITY CONTROL VALVE FOR VARIABLE DISPLACEMENT SWASH PLATE COMPRESSOR

PROBLEM TO BE SOLVED: To provide a capacity control valve for a variable displacement swash plate compressor, for opening/closing a communication passage between a discharge chamber and a crank chamber depending on differential pressure between discharge pressure and suction pressure, and for preventing gas from flowing from the crank chamber into the suction chamber when the communication passage between the discharge chamber and the crank camber is opened. SOLUTION: The capacity control valve for a variable displacement swash plate compressor makes the communication passage between the discharge chamber and the crank chamber open/close depending on differential pressure between the discharge pressure and the suction pressure. The capacity control valve has a first passage forming a part of the communication passage, a second passage forming a part of the communication passage between the crank chamber and the suction chamber, and a valve element. The valve element closes the second passage when the first passage should be opened, and opens the first passage when the second passage should be closed. COPYRIGHT: (C)2006,JPO&NCIPI