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Title:
FLUID CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2019/058887
Kind Code:
A1
Abstract:
A fluid control valve (5) is provided with a valve body (57) that opens and closes an internal passage (512) so as to switch the state between a valve-opened state and a valve-closed state and that applies the pressure of a working fluid in a valve opening direction. The fluid control valve is provided with a first path that is a magnetic path through which a magnetic flux passes between a plunger (55) and a yoke (56), and a second path that is a magnetic path through which a magnetic flux passes between the plunger and the yoke at a position different from that of the first path. When electricity is turned on in the valve-opened state, the first path forms a magnetic path having a larger magnetic flux than that of the second path. In the valve-closed state, the second path forms a magnetic path having a larger magnetic flux than that of the first path. With this configuration, it is possible to forestall size increase in valves and improve closing performance of a valve when the valve is to be closed against the pressure of a working fluid.

Inventors:
TOCHIHARA HIDEYA (JP)
Application Number:
PCT/JP2018/031652
Publication Date:
March 28, 2019
Filing Date:
August 28, 2018
Export Citation:
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Assignee:
HAMANAKODENSO CO LTD (JP)
International Classes:
F16K31/06; H01F7/16
Domestic Patent References:
WO2006115086A12006-11-02
Foreign References:
JPS5138733U1976-03-23
JP2000277327A2000-10-06
JPH09148129A1997-06-06
JP2010171059A2010-08-05
US20170047152A12017-02-16
JP2013016701A2013-01-24
JP2013077792A2013-04-25
JP2004353774A2004-12-16
JPS50131021U1975-10-28
JP2014119031A2014-06-30
Attorney, Agent or Firm:
JIN Shunji (JP)
Download PDF:
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