ELECTROMAGNETIC CONTROL VALVE - SAGINOMIYA SEISAKUSHO INC

Title:

ELECTROMAGNETIC CONTROL VALVE

Document Type and Number:

WIPO Patent Application WO/2015/136773

Kind Code:

A1

Abstract:

In a pressure-balancing electromagnetic control valve in which the degree of opening of the valve body (31) is proportionally changed by balancing the electromagnetic force of an electromagnetic drive section (5) and the spring force of an adjustment spring (83) and canceling the effects of the difference between the pressure of a first port (11) and the pressure of a second port (21) on the valve body (31), the present invention reduces the length of the valve housing (1) and accurately controls the degree of valve opening by eliminating the effect of the dynamic pressure of fluid in the second port on the plunger of the electromagnetic drive section. The electromagnetic drive section (5), adjustment spring (83) (setup adjustment section (8)), pressure equalization chamber (13) and diaphragm (4) (pressure-sensing section) are provided on the axial line (L) of the valve port (22) on the side of the valve body (31) that is opposite to the valve port (22). A cover (6) through which a connection rod (323) is inserted is provided between the pressure equalization chamber (13) and the plunger (53). The flow of fluid from the pressure equalization chamber (13) to the plunger (53)-side is constricted (controlled) by the gap between the insertion hole (6a) of the cover (6) and the connection rod (323).

Inventors:

OKAWARA ICHIRO (JP)

Application Number:

PCT/JP2014/079641

Publication Date:

September 17, 2015

Filing Date:

November 07, 2014

Export Citation:

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Assignee:

SAGINOMIYA SEISAKUSHO INC (JP)

International Classes:

F16K47/04; F16K31/06

Foreign References:

JPH05141561A	1993-06-08
JP2007071207A	2007-03-22
DE10248125A1	2004-05-13
JP2011169415A	2011-09-01

Other References: