公开(公告)号：US06241480B1

公开(公告)日：2001-06-05

申请号：US09472646

申请日：1999-12-27

申请人： Charles Ye Yingjie Chu ,  Guann Pyng Li

发明人： Charles Ye Yingjie Chu ,  Guann Pyng Li

IPC分类号： F04F1100

CPC分类号： F04F99/00 ,  F04B7/00 ,  F04B17/044 ,  F04B19/006

摘要： A micropump fabricated in a planar substrate is provided with a valving chamber which is communicated to a pumping chamber. The valving chamber has an inlet and outlet port. Both the valving chamber and pumping chamber have a liquid, electrically conductive piston disposed therein, which liquid piston is nonmiscible with the pumped working fluid and nonreactive with the substrate in which the chambers are formed. The valving piston is magnetohydrodynamically driven to selectively close either the inlet port or the outlet port. The pumping piston is magnetohydrodynamically driven to pull or push the working fluid through one of the inlet or outlet ports, through the valving chamber, into the pumping chamber, back out of the pumping chamber and through the other one of the inlet or outlet ports after activation of the valving piston. Both direct current and inductive magnetohydrodynamic drives are contemplated. The valving and/or pumping chambers may be shaped or narrowed in their dimensions to impose a mechanical bias on the respective valving and/or pumping pistons to assume a preferred position in their respective chambers when the magnetohydrodynamic drive is turned off.

摘要翻译： 在平面基板中制造的微型泵设置有阀室，其连通到泵送室。 阀室具有入口和出口。 阀室和泵送室均具有设置在其中的液体导电活塞，该液体活塞与泵送的工作流体不可混合，并且与形成腔室的基板不反应。 阀门活塞被磁流体动力驱动以选择性地关闭入口端口或出口端口。 泵送活塞被磁流体动力驱动以将工作流体通过其中一个入口或出口端口，通过阀门室进入泵送室，从泵送室返回并通过另一个入口或出口端口 启动阀门活塞。 考虑了直流和感应磁流体动力传动。 阀门和/或泵送室可以在其尺寸上成形或变窄，以在相应的阀门和/或泵送活塞上施加机械偏置，以在磁流体动力传动装置关闭时在其各自的室中呈现优选位置。