发明名称 NORMALLY CLOSED THREE-PORT VALVE
摘要 [Problem] To provide a normally closed three-port valve which is formed so as to have a structure that combines components that can be manufactured from molded articles with which a valve member can easily be molded and assembled, and for which manufacturing cost for the valve member is reduced. [Solution] A normally closed three-port valve equipped with a valve member (3), which is biased in the valve-closing direction from a supply port (P) side with respect to a main valve seat (2) within a valve body (1), and which is opened by a valve-opening rod (5) provided with a discharge flow path (6), with a back pressure chamber (8) behind this valve member communicating with a flow path on an output port (A) side by means of a ventilation hole (9), thereby balancing the fluid pressure acting on the front and rear surfaces of the valve member, wherein the valve member is formed by means of a valve member main body (31), a seat member (32), which is formed by a disc-shaped seal material having rubber elasticity, and is provided with a main seat surface (32a), an exhaust seat surface (32b), and a through-hole (32c) opened therebetween and forming the ventilation hole (9), a securing member (33) that secures the seat member to the valve member main body, and a pressing frame (34) at the circumference of the seat member, with the structural components of the valve member being formed by means of molded articles.
申请公布号 WO2014068652(A1) 申请公布日期 2014.05.08
申请号 WO2012JP77967 申请日期 2012.10.30
申请人 SMC CORPORATION 发明人 KURIBAYASHI AKIRA;YAMAMOTO HITOSHI
分类号 F16K1/00;F16K1/32;F16K39/02 主分类号 F16K1/00
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