US 11,873,805 B2
Capacity control valve
Masahiro Hayama, Tokyo (JP); Kohei Fukudome, Tokyo (JP); Takahiro Ejima, Tokyo (JP); Daichi Kurihara, Tokyo (JP); Wataru Takahashi, Tokyo (JP); and Keigo Shirafuji, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD.
Appl. No. 17/258,692
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Aug. 7, 2019, PCT No. PCT/JP2019/031067
§ 371(c)(1), (2) Date Jan. 7, 2021,
PCT Pub. No. WO2020/032087, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 2018-149803 (JP), filed on Aug. 8, 2018.
Prior Publication US 2021/0285433 A1, Sep. 16, 2021
Int. Cl. F04B 27/18 (2006.01); F16K 11/10 (2006.01)
CPC F04B 27/1804 (2013.01) [F16K 11/10 (2013.01); F04B 2027/1809 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A capacity control valve for controlling a flow rate by energization of a solenoid, comprising:
a valve housing formed with a discharge port through which discharge fluid with a discharge pressure passes, a suction port through which suction fluid with a suction pressure passes, and first and second control ports through which control fluid with a control pressure passes;
a rod arranged in the valve housing and driven by the solenoid;
a CS valve configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod; and
a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with a movement of the rod,
wherein in a non-energization state of the solenoid, the CS valve is closed and the DC valve is opened,
wherein in a maximum current state of the solenoid, the CS valve is opened and the DC valve is closed,
wherein in energization control of the solenoid, the CS valve transitions from a closed state to an open state and the DC valve transitions from an open state to a closed state, and the DC valve is closed with a stroke of equal to or longer than a predetermined stroke shorter than a maximum stroke of the rod,
wherein the DC valve includes a DC valve body slidably attached to the rod and a DC valve seat formed in the valve housing, and
wherein the DC valve body is biased toward a side of the DC valve seat by a spring.