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Title:
FLOW CONTROL VALVE
Document Type and Number:
Japanese Patent JP3589144
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a flow control valve precisely controlling by holding a linear relation between a rotation angle and a flow rate in the whole controlling range of a valve element.
SOLUTION: This flow control valve is provided with the valve element 3 for opening/closing an inlet 2 and an outlet 1 in a casing body having the both ports 1 and 2 for fluid and is so constituted that a recessed groove 10 formed in the valve element 3 can control the inflow rate of the fluid by communicating the inlet 2 and the outlet 1, fallowing the rotation of the valve element 3. The shape of the recessed groove 10 is so set that the changing rate of the flow rate to the rotation angle from an intermediate open position S2 where the inlet 2 and the outlet 1 are in the communicated state at two points of the start side and the terminal side of the recessed groove 10, to the maximum opened position becomes almost same as the changing rate of the inflow rate to the rotation angle from the closing position to the intermediate open position S2.


More Like This:
WO/2013/077164GATE VALVE
Inventors:
Shun Yogo
Application Number:
JP2000000085853
Publication Date:
November 17, 2004
Filing Date:
March 27, 2000
Export Citation:
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Assignee:
Kansai Kako Co., Ltd.
International Classes:
F16K3/02; F16K3/08; F16K3/32; (IPC1-7): F16K3/08; F16K3/32
Domestic Patent References:
JP54047129A
JP7016080U
JP59155363U
JP62137473A
JP2000320693A
JP1063878U
JP2001187977A
JP1063878U
JP51119019U
JP59022392U
Attorney, Agent or Firm:
Takao Yanagino