US 12,129,840 B2
Capacity control valve
Masahiro Hayama, Tokyo (JP); Kohei Fukudome, Tokyo (JP); Toshinori Kanzaki, Tokyo (JP); Wataru Takahashi, Tokyo (JP); and Keigo Shirafuji, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., (JP)
Appl. No. 17/771,412
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Oct. 23, 2020, PCT No. PCT/JP2020/039833
§ 371(c)(1), (2) Date Apr. 22, 2022,
PCT Pub. No. WO2021/085318, PCT Pub. Date May 6, 2021.
Claims priority of application No. 2019-195454 (JP), filed on Oct. 28, 2019.
Prior Publication US 2022/0381364 A1, Dec. 1, 2022
Int. Cl. F04B 27/18 (2006.01); F16K 31/06 (2006.01)
CPC F04B 27/1804 (2013.01) [F16K 31/06 (2013.01); F04B 27/18 (2013.01); F04B 2027/1818 (2013.01); F04B 2027/1831 (2013.01); F04B 2027/185 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A capacity control valve comprising:
a valve housing provided with a suction port through which a suction fluid of a suction pressure passes and a control port through which a control fluid of a control pressure passes;
a valve body driven by a solenoid and having a pressure receiving surface on which the control pressure having a direction opposed to a driving direction of the solenoid acts;
a spring that biases the valve body in a direction opposite to a direction of driving by the solenoid; and
a control-suction valve that includes a control-suction valve seat and the valve body, and that opens and closes a communication between the control port and the suction port,
wherein the capacity control valve further comprises
a supply device that supplies the control fluid of the control pressure to a back side of the valve body which is a side opposed to the pressure receiving surface of the valve body, and
a flow passage control device that uses a fluid pressure generated by opening and closing of the control-suction valve and a pressure on the back side of the valve body to decrease the pressure on the back side of the valve body.