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Patent Searching and Data


Title:
FLUID CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2019/159698
Kind Code:
A1
Abstract:
This fluid control valve comprises a valve body (13) that opens and closes a flow channel, a magnet (23) secured to the valve body (13) so that an S pole (24) and an N pole (25) are positioned forward and rearward with respect to the movement direction of the valve body (13), a two-pole detection Hall IC (30) having an S pole and N pole to the side of the magnet (23) relative to the movement direction, and an actuator that drives the valve body (13). The two-pole detection Hall IC (30), in which a magnetosensitive part is disposed along a direction in which magnetic flux density directed toward the center axis of the magnet (23) is applied, detects the magnetic flux density of a first pole, which is one of the S pole (24) and the N pole (25), at or above an operative magnetic flux density when the valve body (13) is closed, and detects the magnetic flux density of a second pole, which is the other of the S pole (24) and the N pole (25), at or above an operative magnetic flux density when the valve body (13) is open, whereby the position of the valve body (13) is assessed.

Inventors:
TOMITA Hideo
SUGIYAMA Masaki
NAGANUMA Naoto
KATASE Hiroaki
Application Number:
JP2019/003294
Publication Date:
August 22, 2019
Filing Date:
January 31, 2019
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
F16K37/00; G01B7/00; F16K31/04
Foreign References:
JP2002238288A2002-08-23
JP2002106744A2002-04-10
JPS63199079U1988-12-21
JPH05280916A1993-10-29
JP2011503469A2011-01-27
JP2010019189A2010-01-28
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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