Patent attributes
A capacity control valve has a communication path (31) for communicating a discharge chamber (11) and a control chamber (12); one valve chamber (36) in the middle of the communication path (31); communication paths (32, 31b) for communicating a suction chamber (13) and the control chamber (12); the other valve chamber (36) in the middle of the communication path (32); a valve body (40) including a first valve section (41) that opens and closes the communication path (31) and a second valve section (42) that opens and closes the communication path (32), the first and second valve sections being placed in the valve chamber (36) and performing the opening and closing operation in a manner opposite to each other; and a solenoid (60) for moving the valve body (40). The valve body (40) has a pressure receiving section (44) at its end section that is across the second valve section (42) from the first valve section (41), and the pressure receiving section (44) receives pressure in the control chamber. The pressure receiving area S3 of the pressure receiving section (44) is substantially the same as the difference between the pressure receiving area S2 of the second valve section (42) and the pressure receiving area S1 of the first valve section. The valve is reduced in size, an influence of the pressure in the control chamber is minimized, and stable capacity control with excellent response is enabled.
