公开(公告)号：US20100127196A1

公开(公告)日：2010-05-27

申请号：US12593580

申请日：2008-03-13

申请人： Yohei Sawada ,  Kaoru Hirata ,  Ryosuke Doho ,  Kouji Nishino ,  Nobukazu Ikeda

发明人： Yohei Sawada ,  Kaoru Hirata ,  Ryosuke Doho ,  Kouji Nishino ,  Nobukazu Ikeda

IPC分类号： F16K31/02

CPC分类号： F16K31/007 ,  F16K7/14

摘要： Stable flow control is made possible even under high-temperature environments by relieving tensional force applied to a piezoelectric element when a piezoelectric actuator is retracted. Thus, a piezoelectric driven control valve includes: a body having a valve seat; a metal diaphragm to contact with and separate from the valve seat; an actuator box supported ascendably and descendably on the body; a split base fixed to the body; a disc spring pressing and urging the actuator box downward to bring the metal diaphragm into contact with the valve seat; and a piezoelectric actuator housed inside the actuator box and that extends upward with application of voltage to press the actuator box upward against the elastic force of the disc spring, and a precompression mechanism, for applying a compression force constantly to piezoelectric elements in the piezoelectric actuator, provided between the split base and the piezoelectric actuator.

摘要翻译： 即使在高温环境下，当压电致动器缩回时，通过减轻施加到压电元件的张力来实现稳定的流量控制。 因此，压电驱动控制阀包括：具有阀座的主体; 金属隔膜与阀座接触并分离; 一个致动器箱，可以上下方式支撑在主体上; 固定在身体上的分裂基座; 盘簧弹簧向下推动执行器箱，使金属隔膜与阀座接触; 以及压电致动器，其容纳在致动器箱内部并且通过施加电压向上延伸以克服盘簧的弹性力向上推动致动器盒;以及预压机构，用于将压缩力恒定地施加到压电致动器中的压电元件 ，设置在分离基座和压电致动器之间。