CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To simplify the structure of a control valve in carrying out the OFF- side control and the ON-side control of the compressor of a variable displacement swash plate type by one control valve. SOLUTION: Inside the valve housing 51 of a control valve 51, an opening/ closing valve mechanism 60 for controlling the opening/closing of an air supply passage 28 for communicating a discharge chamber 22 with a crank chamber 5, and an adjust valve mechanism 70 for optionally adjusting the opening degree of an air extracting passage 27 for communicating a suction chamber 21 with the crank chamber 5 are incorporated to operate independently of each other. One coil 85 is shared b the first plunger 82 of the opening/closing valve mechanism and the second plunger 83 of the adjust valve mechanism. An adjust valve body 73 and a pressure sensitive member (bellows) 76 constituting the adjust valve mechanism are arranged in the same chamber 71, to which suction pressure Ps is applied.