US 12,435,794 B2
Fluid control valve
Hideki Higashidozono, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., Tokyo (JP)
Appl. No. 18/563,717
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed May 25, 2022, PCT No. PCT/JP2022/021401
§ 371(c)(1), (2) Date Nov. 22, 2023,
PCT Pub. No. WO2022/255188, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 2021-091743 (JP), filed on May 31, 2021.
Prior Publication US 2024/0271705 A1, Aug. 15, 2024
Int. Cl. F16K 1/42 (2006.01); F16K 1/36 (2006.01)
CPC F16K 1/42 (2013.01) [F16K 1/36 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A fluid control valve, comprising:
a valve housing which includes an inflow passage and a discharge passage;
a valve seat which is disposed between the inflow passage and the discharge passage; and
a valve body which includes a guide portion guided by an inner surface of the valve housing and a seal portion brought into contact with and separated from the valve seat,
wherein the guide portion of the valve body includes a flat surface and a tapered surface inclined with respect to the flat surface so as to be tapered toward a side of the seal portion side from an edge of the flat surface on a seal portion side in an axial direction of the valve body,
wherein a dimension difference (L1) between a radius of a first axial end edge of the tapered surface and a radius of a second axial end edge of the tapered surface is smaller than a clearance (L2) between the flat surface and the inner surface of the valve housing in a state in which the valve body is disposed coaxially with the valve housing, and
wherein a concave portion extending from the flat surface to the tapered surface is formed in the valve body, the concave portion extending at least partially in a circumferential direction along both the flat surface and the tapered surface.