US 11,867,312 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.
Appl. No. 17/600,536
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Apr. 2, 2020, PCT No. PCT/JP2020/015183
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2020/204137, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-071838 (JP), filed on Apr. 4, 2019.
Prior Publication US 2022/0170564 A1, Jun. 2, 2022
Int. Cl. F16K 31/06 (2006.01); G05D 16/20 (2006.01); F04B 27/18 (2006.01)
CPC F16K 31/0675 (2013.01) [F04B 27/18 (2013.01); G05D 16/2022 (2019.01)] 10 Claims
OG exemplary drawing
 
1. A capacity control valve in which a position of a valve element is changed by drawing a movable iron core to a fixed iron core with magnetic force generated in accordance with energization of an electromagnetic coil, wherein
one of the fixed iron core and the movable iron core includes a projected portion which is projected in an axial direction on a side of an outer peripheral surface of the one of the fixed core and the movable iron core,
remaining one of the fixed iron core and the movable iron core includes a projected portion which is projected in the axial direction on a side of an inner peripheral surface of the remaining one of the fixed core and the movable iron core,
the projected portions are capable of being loosely fitted to each other when the movable iron core is drawn to the fixed iron core,
the projected portion of the one of the fixed iron core and the movable iron core is formed in a tapered shape so as to have, as a distal end surface thereof, an effective magnetic force surface which is smaller than an opposing surface of the remaining one of the fixed iron core and the movable iron core, the opposing surface facing the effective magnetic force surface, and
the capacity control valve is of a normal open type to be brought into an opened state upon non-energization of the electromagnetic coil.