公开(公告)号：US5641270A

公开(公告)日：1997-06-24

申请号：US509472

申请日：1995-07-31

申请人： George E. Sgourakes ,  Joseph F. Actor ,  Richard L. Vigeant ,  Carlton H. Paul

发明人： George E. Sgourakes ,  Joseph F. Actor ,  Richard L. Vigeant ,  Carlton H. Paul

IPC分类号： F04B17/04 ,  F04B43/04 ,  F04B49/06 ,  G01N30/02 ,  G01N30/32 ,  F04B17/00 ,  F04B35/00

CPC分类号： G01N30/32 ,  F04B17/04 ,  F04B43/04 ,  F04B49/065 ,  G01N2030/027 ,  G01N2030/326

摘要： A magnetostrictive pump is provided which makes use of a magnetostrictive element which, when an alternating magnetic field is applied to it, compresses a chamber containing a working fluid. A bellows located within the working fluid is repeatedly compressed by the compression of the chamber, and pumps a fluid to be pumped in and out of the bellows. Since the magnetostrictive element does not directly contact the bellows, the bellows life is greatly extended. Valves are provided to direct the fluid flow in a desired manner. The pump may be combined with other pumps in various series or parallel arrangements to create a pump system. The pump may be pre-biased to make its response more linear by either mechanical or magnetic biasing. A permanent magnet may be used to magnetically bias the pump and create an "at-rest" initial extension of the magnetostrictive element. Similarly, a spring may be used to mechanically load the magnetostrictive element. A controller is used to detect feedback signals from pressure and pump displacement transducers, and thereby provide active control of the pump or pump system. It is especially useful for high performance liquid chromatography.

摘要翻译： 提供了一种利用磁致伸缩元件的磁致伸缩泵，该磁致伸缩元件当施加交变磁场时，压缩包含工作流体的腔室。 位于工作流体内的波纹管通过腔室的压缩被反复压缩，并将要泵入的流体泵入和流出波纹管。 由于磁致伸缩元件不直接接触波纹管，因此​​波纹管寿命大大延长。 提供阀以以期望的方式引导流体流动。 泵可以与各种串联或并联装置的其它泵组合以产生泵系统。 泵可以被预偏置以通过机械或磁偏置使其响应更线性。 可以使用永磁体来磁偏置泵并产生磁致伸缩元件的“静止”初始延伸。 类似地，可以使用弹簧来机械地加载磁致伸缩元件。 控制器用于检测来自压力和泵位移传感器的反馈信号，从而提供泵或泵系统的主动控制。 它对高效液相色谱特别有用。