Title:
PRESSURE REGULATOR VALVE
Document Type and Number:
WIPO Patent Application WO/2023/181851
Kind Code:
A1
Abstract:
A pressure regulator (1) has a fluid pressure chamber (11) communicating with a fluid passage (111), and a valve member (30) which separates from a valve seat (13) in a state in which a fluid pressure in the fluid pressure chamber (11) is higher than a set pressure. A valve body (31) of the valve member (30) comprises: a flat portion (311) forming an annular flat surface facing the valve seat (13); a recessed portion (312) located on a radially inner side of the flat portion (311), and formed by denting a valve seat (13) side of the valve body (31); and a slope portion (313) connecting a radially inner-side edge of the flat portion (311) and a radially outer-side edge of the recessed portion (312). A seal member (32) comprises: a dent portion (322) dented corresponding to the recessed portion (312); an annular protruding portion (321) formed to protrude toward the valve seat (13), at a location corresponding to the boundary between the flat portion (311) and the slope portion (313); and a connection portion (323) corresponding to the slope portion (313), and connecting a radially inner-side edge of the protruding portion (321) and a radially outer-side edge of the dent portion (322) with a slope surface.
Inventors:
OHNO AKIHIRO (JP)
NAKAMURA SATOSHI (JP)
NAKAMURA SATOSHI (JP)
Application Number:
PCT/JP2023/008065
Publication Date:
September 28, 2023
Filing Date:
March 03, 2023
Export Citation:
Assignee:
AISAN IND (JP)
International Classes:
F16K17/04; F02M37/00; F16K25/00
Foreign References:
| JP2022034359A | 2022-03-03 | |||
| JPS61266881A | 1986-11-26 | |||
| GB2388648A | 2003-11-19 |
Attorney, Agent or Firm:
OKADA PATENT & TRADEMARK OFFICE, P. C. (JP)
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