Fluid control valve

Patent metadata

Field	Value
Publication number	US-2024271705-A1
Application number	US-202218563717-A
Country	US
Kind code	A1
Filing date	May 25, 2022
Priority date	May 31, 2021
Publication date	Aug 15, 2024
Grant date	—

Abstract

Provided is a fluid control valve that is less likely to malfunction due to contamination. The fluid control valve includes 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, the guide portion of the valve body includes a flat surface and a tapered surface tapered toward a side of the seal portion.

First claim

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 tapered toward a side of the seal portion.

2 : The fluid control valve according to claim 1 ,
wherein an outer dimension of the valve body is larger at the tapered surface than at the seal portion.

3 : The fluid control valve according to claim 1 ,
wherein the tapered surface is an inclined surface with respect to an axial direction of the valve body.

4 : The fluid control valve according to claim 1 ,
wherein a concave portion extending from the flat surface to the tapered surface is formed in the valve body.

5 : The fluid control valve according to claim 4 ,
wherein the concave portion is closed on the flat surface.

6 : The fluid control valve according to claim 4 ,
wherein the concave portion is a spiral groove.

7 : The fluid control valve according to claim 2 ,
wherein a concave portion extending from the flat surface to the tapered surface is formed in the valve body.

8 : The fluid control valve according to claim 7 ,
wherein the concave portion is closed on the flat surface.

9 : The fluid control valve according to claim 7 ,
wherein the concave portion is a spiral groove.

10 : The fluid control valve according to claim 3 ,
wherein a concave portion extending from the flat surface to the tapered surface is formed in the valve body.

11 : The fluid control valve according to claim 10 ,
wherein the concave portion is closed on the flat surface.

12 : The fluid control valve according to claim 10 ,
wherein the concave portion is a spiral groove.

Assignees

• Eagle Ind Co Ltd

Inventors

• Higashidozono Hideki

Classifications

• F16K1/36

  Valve members (for double-seat valves F16K1/44 {; for butterfly valves F16K1/222, F16K1/223}) · CPC title

• F16F9/465

  using servo control, the servo pressure being created by the flow of damping fluid, e.g. controlling pressure in a chamber downstream of a pilot passage (self-adjustment of damping F16F9/50) · CPC title

• F16K25/005

  Particular materials for seats or closure elements · CPC title

• F16K1/42 Primary

  Valve seats (for double-seat valves F16K1/44) · CPC title

• F16K17/105

  using choking or throttling means to control the fluid operation of the main valve · CPC title