US 11,994,120 B2
Capacity control valve
Masahiro Hayama, Tokyo (JP); Kohei Fukudome, Tokyo (JP); Takahiro Ejima, Tokyo (JP); Daichi Kurihara, Tokyo (JP); Wataru Takahashi, Tokyo (JP); Keigo Shirafuji, Tokyo (JP); and Yoshihiro Ogawa, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., (JP)
Appl. No. 17/256,947
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Jul. 9, 2019, PCT No. PCT/JP2019/027073
§ 371(c)(1), (2) Date Dec. 29, 2020,
PCT Pub. No. WO2020/013156, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 2018-132689 (JP), filed on Jul. 12, 2018.
Prior Publication US 2021/0363980 A1, Nov. 25, 2021
Int. Cl. F16K 31/06 (2006.01); F04B 27/18 (2006.01)
CPC F04B 27/1804 (2013.01) [F16K 31/0624 (2013.01); F04B 2027/1813 (2013.01); F04B 2027/1827 (2013.01); F04B 2027/1831 (2013.01); F04B 2027/1845 (2013.01); F04B 2027/1859 (2013.01); F04B 2027/1877 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A capacity control valve comprising:
a valve housing provided with a discharge port allowing a discharge fluid of a discharge pressure to pass therethrough, a suction port allowing a suction fluid of a suction pressure to pass therethrough, and a control port allowing a control fluid of a control pressure to pass therethrough;
a primary valve including a primary valve seat and a primary valve body driven by a solenoid and opening and closing a communication between the discharge port and the control port by a movement of the primary valve body; and
a control-suction valve which includes a control-suction valve body, a first spring configured to urge the control-suction valve body in a closing direction of the control-suction valve, and a second spring configured to urge the control-suction valve body in an opening direction of the control-suction valve,
the control port and the suction port being opened at a valve closed position of the primary valve body,
the control port and the suction port being closed at a valve opened position of the primary valve body,
wherein the capacity control valve further comprises a pressure drive valve which is opened and closed in accordance with the suction pressure, and
the primary valve body constitutes a part of a hollow rod provided with a hollow communication path capable of causing the control port to communicate with the suction port by opening and closing the pressure drive valve.