Valve device

Patent metadata

Field	Value
Publication number	US-11873909-B2
Application number	US-202217735441-A
Country	US
Kind code	B2
Filing date	May 3, 2022
Priority date	Nov 7, 2019
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

A valve device includes a case member, a valve body, a sleeve, a spring, and a spring end support part. The sleeve is slidably supported by an inner wall of a fluid inflow part of the case member and forms a flow path to guide a fluid flowing out from a valve outflow port of the valve body toward a fluid outflow port of the case member. The spring is placed so as to surround the outer periphery of the sleeve and biases the sleeve toward the valve body. The spring end support part is formed in an end part in the case member on an opposite side of the spring from the valve body and supports an end part of the spring on an opposite side to the valve body in the axial direction from the outside in the radial direction of the spring.

First claim

What is claimed is:

1. A valve device configured to perform at least one of adjustment of a flow rate of fluid or switching of a flow path, the valve device comprising:
a case member having
a fluid inlet part configured to cause fluid to flow therethrough,
a fluid inflow part configured to cause the fluid, which flows into the fluid inlet part, to flow therethrough, and
a fluid outflow port configured to cause the fluid, which passes through the fluid inflow part, to flow therefrom;
a valve body having a valve outflow port configured to cause the fluid, which flows from the fluid inlet part, to flow therethrough and is rotational inside the case member;
a cylindrical sleeve slidably supported by an inner wall of the fluid inflow part and forming a flow path configured to guide the fluid, which flows from the valve outflow port, to the fluid outflow port of the case member;
a spring surrounding an outer periphery of the sleeve and biasing the sleeve toward the valve body; and
a spring end support part formed on an end part in the case member, which is on an opposite side of the spring from the valve body, wherein
the spring end support part is configured to support an end part of the spring on a side opposite to the valve body in an axial direction and from an outside in a radial direction of the spring, wherein
the spring end support part includes a plurality of projections projecting from the end part in the case member, which is on the opposite side of the spring from the valve body in the axial direction, toward the valve body, and
the plurality of projections is located on an outside of the spring in a radial direction and surrounds an outer circumferential periphery of the spring, and the plurality of projections overlaps in position with the spring in an axial direction of the spring.

2. The valve device according to claim 1 , wherein
the case member includes a housing having the fluid inlet part and an outlet pipe structural member having the fluid inflow part and the fluid outflow port,
the housing has a fluid outlet part configured to guide the fluid, which flows from the fluid inlet part to the fluid inflow part, and
the plurality of projections is configured to guide the sleeve and the spring to an inside of the fluid outlet part when the housing and the outlet pipe structural member are assembled to each other.

3. The valve device according to claim 2 , wherein
the outlet pipe structural member has a screw fixing part having a through hole configured to be inserted with a screw,
the housing includes a housing body having a flow path to cause the fluid to flow therethrough, a screw fastening part in which the screw is fastened, and a coupling part via which the housing body and the screw fastening part are coupled to each other,
the housing body and the outlet pipe structural member are assembled to each other by fastening and fixing the screw inserted in the through hole formed in the screw fixing part to the screw fastening part formed in the housing, and
a hole is formed between the screw fastening part and the housing body.

4. The valve device according to claim 2 , wherein
the plurality of projections is inserted in the fluid outlet part.

5. The valve device according to claim 4 , wherein
the plurality of projections is formed at positions to be in contact with an inner periphery of the fluid outlet part.

6. The valve device according to claim 1 , wherein
the plurality of projections projects in parallel to an axis line of the fluid inflow part at a region, which is on an outside of the spring in the radial direction, from the end part in the case member, which is on the opposite side of the spring from the valve body in the axial direction.

7. The valve device according to claim 1 , wherein
the plurality of projections is located on the outside of an end part of the spring, which is on a side opposite to the valve body, in the radial direction and surrounds the outer circumferential periphery of the end part of the spring.

8. The valve device according to claim 7 , wherein
the plurality of projections is configured to be in contact with the outer circumferential periphery of the end part of the spring.

9. The valve device according to claim 7 , wherein
the plurality of projections is configured to support the end part of the spring from the outside of the spring in the radial direction.

10. The valve device according to claim 1 , wherein
the plurality of projections is separated from each other in a circumferential direction.

11. The valve device according to claim 1 , wherein
the plurality of projections includes eight projections.

Assignees

• Denso Corp

Inventors

• Suzuki Rie

Classifications

• F16K11/0856 Primary

  having all the connecting conduits situated in more than one plane perpendicular to the axis of the plug · CPC title

• F16K27/065

  with cylindrical plugs · CPC title

• F16K27/067

  with spherical plugs · CPC title

• F16K3/26 Primary

  with fluid passages in the valve member · CPC title

• F16K5/06

  with plugs having spherical surfaces; Packings therefor · CPC title