Title:
FLOW PASSAGE SWITCHING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/048798
Kind Code:
A1
Abstract:
This flow passage switching device includes a housing and a valve body portion provided inside the housing, wherein: the valve body portion is provided with a valve body formed in the shape of a plate; the housing is provided with a plurality of housing communication passages; the valve body is provided with at least one valve body communication passage; flow passages are formed by combining the housing communication passages and the valve body communication passage; a first seal member for sealing the flow passages is provided between the housing and the valve body; a housing projecting portion is provided on a surface of the hosing facing the valve body; a valve body projecting portion is provided on a surface of the valve body facing the housing; and, when the valve body is driven to switch between the flow passages, the housing projecting portion and the valve body projecting portion overlap one another, enlarging a first gap between the housing and the valve body.
Inventors:
YOSHIOKA MAMORU (JP)
KAWAI SHINJI (JP)
KAWAI SHINJI (JP)
Application Number:
PCT/JP2023/033416
Publication Date:
March 07, 2024
Filing Date:
September 13, 2023
Export Citation:
Assignee:
AISAN IND (JP)
International Classes:
F16K3/08; F16K11/074
Foreign References:
| JPH1144369A | 1999-02-16 | |||
| JP2002022041A | 2002-01-23 | |||
| JPH0492168A | 1992-03-25 | |||
| JPH05263953A | 1993-10-12 |
Attorney, Agent or Firm:
COSMOS INTERNATIONAL PATENT & TRADEMARK OFFICE (JP)
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