Sealing member for a multi-direction changeover valve and a multi-direction changeover valve including the sealing member

Patent metadata

Field	Value
Publication number	US-10816100-B2
Application number	US-201916355010-A
Country	US
Kind code	B2
Filing date	Mar 15, 2019
Priority date	Nov 5, 2018
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A sealing member of a multi-direction changeover valve for maintaining air-tightness between an orifice formed in a valve body rotatably installed in a valve housing and a port through which fluid flows into or out of the valve housing. The sealing member includes an annular seal part and an annular frame inserted into the seal part to support the seal part such that the seal part is brought into close contact with an inner circumferential surface of the port.

First claim

What is claimed is:

1. A sealing member of a multi-direction changeover valve for maintaining air-tightness between an orifice formed in a valve body rotatably installed in a valve housing and a port through which fluid flows into or out of the valve housing, the sealing member comprising:
an annular seal part; and
an annular frame inserted into the seal part to support the seal part such that the seal part is brought into close contact with an inner circumferential surface of the port,
wherein, to increase a coupling force between the annular frame and the annular seal part, the annular frame includes a plurality of insert holes formed therein in a circumferential direction,
wherein the annular seal part surrounds the annular frame while filling the plurality of insert holes,
wherein the annular seal part extends a predetermined length in a central axis direction,
wherein the annular frame includes an extension extending a predetermined length in the central axis direction, and
wherein the plurality of insert holes are formed through the extension in a radial direction.

2. A multi-direction changeover valve comprising:
a valve housing having at least two ports through which fluid flows into or out of the valve housing;
a valve body rotatably installed in the valve housing and having an orifice; and
a sealing member mounted between one of the at least two ports and the orifice of the valve body such that at least a portion of the sealing member is brought into close contact with the valve body to maintain air-tightness between the orifice of the valve body and the one of the at least two ports,
wherein the sealing member includes an annular seal part, an annular frame inserted into the annular seal part to support the annular seal part such that the annular seal part is brought into close contact with an inner circumferential surface of the one of the at least two ports, and an annular valve seat brought into close contact with the valve body to maintain the air-tightness around the orifice,
wherein the annular valve seat has a stepped outer circumferential surface and one end portion of the annular valve seat in contact with the valve body has a larger outer diameter than an opposite end portion of the annular valve seat in contact with the annular seal part,
wherein the annular seal part has, at one end, a valve seat insertion portion into which the opposite end portion of the annular valve seat is inserted such that the opposite end portion of the annular valve seat is supported by the valve seat insertion portion in a radially inward direction, and
wherein the annular frame includes an extension that extends in the central axis direction so as to be adjacent to an inner circumference of the annular seal part and a valve seat support portion that extends in a radially outward direction from one end of the extension that is adjacent to the annular valve seat.

3. A sealing member of a multi-direction changeover valve for maintaining air-tightness between an orifice formed in a valve body rotatably installed in a valve housing and a port through which fluid flows into or out of the valve housing, the sealing member comprising:
an annular seal part;
an annular frame inserted into the seal part to support the seal part such that the seal part is brought into close contact with an inner circumferential surface of the port; and
an annular valve seat brought into close contact with the valve body to maintain the air-tightness around the orifice,
wherein the annular valve seat has a stepped outer circumferential surface and one end portion of the annular valve seat in contact with the valve body has a larger outer diameter than an opposite end portion of the annular valve seat in contact with the annular seal part,
wherein the annular seal part has, at one end, a valve seat insertion portion into which the opposite end portion of the annular valve seat is inserted such that the opposite end portion of the annular valve seat is supported by the valve seat insertion portion in a radially inward direction, and
wherein the annular frame includes an extension that extends in the central axis direction so as to be adjacent to an inner circumference of the annular seal part and a valve seat support portion that extends in a radially outward direction from one end of the extension that is adjacent to the annular valve seat.

4. The sealing member of claim 3 , wherein the annular frame is wholly inserted into the seal part.

5. The sealing member of claim 3 , wherein the annular seal part extends a predetermined length in a central axis direction, and
wherein the annular frame extends a predetermined length in the central axis direction and at least one end of the annular frame with respect to the central axis direction is bent in a radial direction.

6. The sealing member of claim 5 , wherein the annular seal part is elastically supported toward the valve body by an elastic member mounted in the port, and
wherein the annular frame includes an extension extending in the central axis direction so as to be adjacent to an inner circumference of the seal part and an elastic member support portion extending from one end of the extension in the radial direction to reinforce one side end of the annular seal part that is pressed by the elastic member.

7. The sealing member of claim 3 , wherein the annular frame further includes a valve seat outside support portion extending from a radially outside end of the valve seat support portion in the central axis direction, and
wherein the valve seat outside support portion is inserted into the valve seat insertion portion of the annular seal part to reinforce the valve seat insertion portion of the annular seal part.

8. The sealing member of claim 3 , wherein to increase a coupling force between the annular frame and the annular seal part, the annular frame comprises a plurality of insert holes formed therein in a circumferential direction, and
wherein the annular seal part surrounds the annular frame while filling the plurality of insert holes.

9. The sealing member of claim 8 , wherein the annular seal part extends a predetermined length in a central axis direction,
wherein the annular frame includes an extension extending a predetermined length in the central axis direction, and
wherein the plurality of insert holes are formed through the extension in a radial direction.

10. The sealing member of claim 3 , wherein the annular seal part includes a lip seal protruding from an outer circumferential surface of the annular seal part toward the port to increase air-tightness between the annular seal part and the port.

11. The sealing member of claim 10 , wherein the lip seal is adjacent to one end of the annular seal part and has an annular shape, and
wherein to allow the lip seal to be elastically deformed in a radially inward direction, an annular depression is formed on one side surface of the annular seal part so as to be located radially inward of the lip seal, the depression being concave toward an inside of the annular seal part.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Na Sung Wook
• Park Hun Woo

Classifications

• F16J15/3436

  Pressing means · CPC title

• F16K11/076

  with sealing faces shaped as surfaces of solids of revolution · CPC title

• F16J15/3204

  with at least one lip · CPC title

• F16K3/314

  Forms or constructions of slides; Attachment of the slide to the spindle · CPC title

• F16K3/243 Primary

  Packings (F16K3/246 takes precedence) · CPC title