Development of a Novel Meso-Scale Electromagnetic pump for Biomedical Applications

This work introduces a novel electromagnetic pump (EMP) that depends on rotating two hard magnets placed in an annular channel in opposing polarity through simultaneous energization of a set of solenoids. The magnetic field in each winding is energized to move one magnet (pumping) while the other is attracted between the inlet and the outlet ports (valving). At the end of each pumping cycle, magnets change their function between pumping and valving. The pump concept was tested for pumping water, where a flow rate of 13.7 ml/min at 200 rpm and a pressure of 785 Pa at 136 rpm are obtained.