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Patent Searching and Data


Title:
VALVE MECHANISM
Document Type and Number:
WIPO Patent Application WO/2019/181225
Kind Code:
A1
Abstract:
A flow rate adjusting valve (10) is provided with: a casing (11) having formed therein an inflow opening (12), an outflow opening (13), and a flow path (14) which connects the inflow opening (12) and the outflow opening (13); a cylindrical valve port member (20) provided in the flow path (14) and having a valve port (21) penetrating in an upstream-downstream direction; and a valve body (34) which moves forward from the downstream side to the valve port (21) and backward from the valve port (21), thereby adjusting the degree of opening of the downstream opening (22) of the valve port (21). The valve port (21) has a narrowed section (24) having a smaller opening diameter than an upstream opening. The valve body (34) has: a tapered section (34b) which enters the inside of the valve port (21) when the valve body (34) moves forward; and a flange section (34a) which is formed at the downstream end of the tapered section (34b), is positioned parallel to an end surface (29a) of the valve port member (22), and has a contact surface (34e) coming into close contact with the end surface (29a) when the valve port (21) is fully closed. The valve body (34) is configured so that, when the downstream opening (22) is at a predetermined degree of opening, the area of the valve port (21) through which fluid passes is smallest at the narrowed section (24).

Inventors:
OIKE Tadashi (LTD. 881 Nagasuna Noguchicho, Kakogawa-sh, Hyogo 11, 〒6758511, JP)
Application Number:
JP2019/003367
Publication Date:
September 26, 2019
Filing Date:
January 31, 2019
Export Citation:
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Assignee:
TLV CO.,LTD. (881 Nagasuna, Noguchicho Kakogawa-sh, Hyogo 11, 〒6758511, JP)
International Classes:
F16K51/00; F16K1/38; F16K1/42
Domestic Patent References:
WO2017217123A12017-12-21
Foreign References:
JP2010270900A2010-12-02
JPH02186171A1990-07-20
JP2001081820A2001-03-27
JPS4319747Y11968-08-17
US3428076A1969-02-18
US3620251A1971-11-16
GB335762A1930-10-02
FR2225667A11974-11-08
JPS57156663U1982-10-01
Attorney, Agent or Firm:
TERAZONO Kenichi et al. (Umeda Ogimachidori Bld, 9-13 Nozaki-cho, Kita-ku, Osaka-sh, Osaka 55, 〒5300005, JP)
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