Title:
DIAPHRAGM VALVE
Document Type and Number:
WIPO Patent Application WO/2019/151491
Kind Code:
A1
Abstract:
In this diaphragm valve (10), an inlet-side flow path (241), in a cross-sectional view at the center in the width direction Y of a flow path (24), is formed by a first flow path forming surface (35) provided on an opening (31a) side, and a second flow path forming surface (36) provided on the opposite side to the opening (31a). An inlet-side inflection point (36a), which is the inflection point on a line in a cross-sectional view of the second flow path forming surface (36), is arranged further toward an outlet (24b) side than an inlet-side contact point (31d) which is the intersection in a cross-sectional view between an inlet (24a)-side inner circumferential surface (31c) of the opening (31a) and the first flow path forming surface (35). The inlet-side contact point (31d) is arranged further toward the opening (31a) side than the inlet-side inflection point (36a). An angle θ1 in the cross-sectional view formed by the first flow path forming surface (35) that forms the inlet-side contact point (31d) and the inlet (24a)-side inner circumferential surface (31c) of the opening (31a), satisfies the expression 0°<θ1≤90°.
Inventors:
TSUCHIDA RISAKO (JP)
SAITO AYAKA (JP)
SAITO AYAKA (JP)
Application Number:
PCT/JP2019/003658
Publication Date:
August 08, 2019
Filing Date:
February 01, 2019
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
F16K7/16; F16K1/04; F16K27/00; F16K27/02; F16K31/04; F16K31/12; F16K31/60
Foreign References:
| JP2012219925A | 2012-11-12 | |||
| JPH09133228A | 1997-05-20 |
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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