FLUID PISTON DEVICE AND FLUID PISTON OPERATION METHOD

To provide a fluid piston technique capable of performing compression or suction of gas and improving maintainability and sealability.SOLUTION: A fluid piston device 1 comprises: a container 2 at least a part of which forms a cylinder shape to house a conductive fluid L; an electromagnetic pump 3 that generates an AC magnetic field for making the conductive fluid L move from one end to the other end inside the container 2; and valves 4, 5 in which a capacity of an inner space 13 of the container 2 other than the part housing the conductive fluid L changes in accordance with movement of the conductive fluid L and makes gas G move in/out to/from the inner space 13 in accordance with such a change.SELECTED DRAWING: Figure 1 【課題】ガスの圧縮または吸引を行うことができ、かつメンテナンス性とシール性を向上できる液体ピストン技術を提供する。【解決手段】液体ピストン装置１は、少なくとも一部が筒状を成して導電性液体Ｌを収容する容器２と、容器２の内部で導電性液体Ｌを一端から他端に向けて移動させる交流磁場を発生させる電磁ポンプ３と、導電性液体Ｌが収容された部分以外の容器２の内空間１３の容積が導電性液体Ｌの移動に応じて変化し、この変化に応じて内空間１３にガスＧを出入りさせるバルブ４，５とを備える。【選択図】図１