Title:
FLOW PATH SWITCHING VALVE
Document Type and Number:
WIPO Patent Application WO/2023/210415
Kind Code:
A1
Abstract:
This flow path switching valve comprises: a valve body in which a valve chamber is formed; a valve member disposed in the valve chamber; an annular sheet member that is positioned between the valve member and the inlet/outlet of the valve body such that a side surface on the reverse side from the valve member side contacts a wall surface of the valve body, and the outer peripheral surface is separated from the valve body; an inclined seal surface which is formed on the sheet member, is inclined at a fixed angle θ relative to an axis, and is contacted by the outer peripheral surface of the valve member; an O-ring that is compressed and accommodated in an O-ring groove provided in the wall surface of the valve body; and a rotation driving unit that rotates the valve member, wherein the value of the angle θ is determined such that the pressing force between the valve member and sheet member at the minimum temperature during use and the pressing force between the valve body and the sheet member at the maximum temperature during use do not vary.
Inventors:
KONDO DAISUKE (JP)
Application Number:
PCT/JP2023/015238
Publication Date:
November 02, 2023
Filing Date:
April 14, 2023
Export Citation:
Assignee:
FUJIKOKI CORP (JP)
International Classes:
F16K5/06
Foreign References:
| JP2019011867A | 2019-01-24 | |||
| JPS5217215A | 1977-02-09 | |||
| JP2020063787A | 2020-04-23 | |||
| JPH08247306A | 1996-09-27 | |||
| JPH0671975U | 1994-10-07 | |||
| US6217002B1 | 2001-04-17 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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