Title:
ELECTROMAGNETIC VALVE AND WORKING FLUID CONTROL DEVICE USING ELECTROMAGNETIC VALVE
Document Type and Number:
WIPO Patent Application WO/2023/026713
Kind Code:
A1
Abstract:
According to the present invention, a valve element (214) has provided therein a pressure release passage (232) for connecting an outflow passage and an inflow passage. In the valve element, a pressure release valve (233) for opening/closing the pressure release passage is disposed. The pressure release valve (233) opens the pressure release passage when the pressure of a working fluid in the outflow passage is higher, by a pressure difference equal to or greater than release pressure, than the pressure of a working fluid in the inflow passage. Even when the working fluid in the outflow passage is confined by a normally closed valve seat (229), the working fluid can be released to the inflow passage side. Thus, there is no need to particularly form the pressure release passage (232) in a valve body. The electromagnetic valve can be miniaturized compared with a case where a pressure release passage is formed in the valve body.
Inventors:
KANEKO FUMIAKI (JP)
SUGANO MASASHI (JP)
HISADA MASAHIRO (JP)
SUGANO MASASHI (JP)
HISADA MASAHIRO (JP)
Application Number:
PCT/JP2022/027403
Publication Date:
March 02, 2023
Filing Date:
July 12, 2022
Export Citation:
Assignee:
HAMANAKODENSO CO LTD (JP)
International Classes:
F16K31/06
Foreign References:
| JP2020070900A | 2020-05-07 | |||
| JP2019152494A | 2019-09-12 | |||
| JP2014152850A | 2014-08-25 | |||
| JP2001276520A | 2001-10-09 | |||
| CN113007422A | 2021-06-22 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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