ELECTRICALLY-DRIVEN FLOW CONTROL VALVE

Japanese Patent JP3410220

B2

PURPOSE: To provide an electrically-driven flow control valve which can maintain the joining accuracy of a lower lid after brazing and can increase the strength of the brazed part.
CONSTITUTION: The structure of a flow control valve consists of a valve body A and a lower lid 7 joined together by a plurality of crimped parts 23 spaced from one another on the circumference of a projecting opening 13 of the valve body and a gap 20 for passing brazing filler metal therethrough maintained between the inner periphery of a lower lid mounting hole 17 and the outer periphery of the projecting opening 13. A filler flow groove 21 is formed consisting of a ring-like groove 22 arranged circumferentially in the welding position of the lower lid 7 and the valve body A and a plurality of concave groobes 22a provided on the contact surface part of the lower lid 7 and the valve body A extending radially inwardly in communication with the ring-like groove 22 and the mounting hole 17. At the time of brazing the contact surface of the valve body A and the lower lid 7 in an inverted position, the molten filler metal is allowed to flow in around the projecting opening 13 of the lower lid 7 through the filler flow groove 21 and the gap 20 to securely weld the body A and the lower lid 7 together.

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Tetsuya Aoki
Tadashi Hasegawa
Coexistence with Ouchi
Chiharu Watanabe

JP17109494A

May 26, 2003

July 22, 1994

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Fuji Koki Co., Ltd.

F16K31/04; F25B41/06; F16K27/00; (IPC1-7): F16K31/04; F16K27/00

JP6174129A
JP6174130A
JP422230Y2

Yusuke Hiraki (1 person outside)

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