Fluid control valve

Patent metadata

Field	Value
Publication number	US-12435796-B2
Application number	US-202218687269-A
Country	US
Kind code	B2
Filing date	Sep 2, 2022
Priority date	Sep 2, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Provided is a fluid control valve capable of stabilizing fluid control characteristics. In a fluid control valve including: a valve housing and a valve seat member which include an inflow passage and a discharge passage, and a valve body that is configured to be brought into contact with and separated from the valve seat member and that forms an inner seal portion and an outer seal portion together with the valve seat member. At least one convex portion which projects into a space inside the valve housing formed between the inner seal portion and the outer seal portion.

First claim

The invention claimed is:

1. A fluid control valve, comprising:
a valve housing;
a valve seat member attached to the valve housing, the valve housing and the valve seat member being formed with an inflow passage and a discharge passage, the valve seat member being disposed between the inflow passage and the discharge passage; and
a valve body that is configured to be brought into contact with and separated from the valve seat member and that forms an inner seal portion and an outer seal portion together with the valve seat member,
wherein at least one convex portion projects into a space inside the valve housing formed between the inner seal portion and the outer seal portion, and
wherein the convex portion is separated from a facing member in a valve closed state.

2. The fluid control valve according to claim 1 ,
wherein the convex portions are formed in both the valve body and the valve seat member.

3. The fluid control valve according to claim 2 ,
wherein the convex portion formed in the valve body and the convex portion formed in the valve set member face each other.

4. The fluid control valve according to claim 2 ,
wherein the convex portion is formed in an annular shape.

5. The fluid control valve according to claim 3 ,
wherein the convex portion is formed in an annular shape.

6. The fluid control valve according to claim 1 ,
wherein the convex portion is formed in an annular shape.

Assignees

• Eagle Ind Co Ltd

Inventors

• Higashidozono Hideki
• Kudo Takuya

Classifications

• F16K1/42 Primary

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

• 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

• F16K31/406

  acting on a piston · CPC title

• F16K1/443

  the seats being in series · CPC title