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Patent Searching and Data


Title:
POPPET-TYPE FLOW CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2019/208385
Kind Code:
A1
Abstract:
This poppet-type flow control valve comprises: a valve housing having an inlet flow channel, an outlet flow channel, a valve chamber provided between the inlet flow channel and the outlet flow channel, and a valve seat provided to the valve chamber; a valve body that is accommodated inside the valve housing and that advances and regresses relative to the valve seat; a piston that moves integrally with the valve body in the advancing/regressing directions in which the valve body advances and regresses; a movement member capable of moving in the advancing/regressing directions in which the valve body advances and regresses, the movement member moving in the regressing direction integrally with the valve body when moving in at least the regressing direction of the advancing/regressing directions; an electric motor; a position detector that detects the rotational angle of an output shaft of the electric motor; a linear motion conversion mechanism that converts the amount of rotation of the output shaft of the electric motor to an amount of linear displacement of the piston in the advancing/regressing directions; and a controller that provides feedback control for the electric motor so that the rotational angle of the output shaft detected by the position detector reaches a rotational angle corresponding to a predetermined target interval between the valve seat and the valve body.

Inventors:
MURAOKA, Hideyasu
TANAKA, Hideki
SHIMIZU, Hiroaki
Application Number:
JP2019/016619
Publication Date:
October 31, 2019
Filing Date:
April 18, 2019
Export Citation:
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Assignee:
KAWASAKI JUKOGYO KABUSHIKI KAISHA (1-1 Higashikawasaki-cho 3-chome, Chuo-ku Kobe-sh, Hyogo 70, 〒6508670, JP)
International Classes:
F16K31/04; F16K1/32; F16K37/00
Foreign References:
JP2003014152A2003-01-15
JPH02283986A1990-11-21
JPS62188878A1987-08-18
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (3rd Fl, Bo-eki Bldg. 123-1, Higashimachi, Chuo-ku, Kobe-sh, Hyogo 31, 〒6500031, JP)
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