Miniaturization Design and Research of Variable Frequency Magnetic Pump

Abstract

In this paper, we report the technological approach to design and implementation of variable frequency magnetic pump with miniaturization. Permanent magnet equipment is used as the piston. The two coils with the identical parameters are closely winded around two terminals of the pump. The reverse pulse current is introduced in the coils. The electromagnetic force with the same direction is applied on the piston by the coils. Then the piston is moved by the electromagnetic force. The output power of magnetic pump can be tuned by controlling the direction and frequency of the pulse circuit. The square wave circuit of LM324 is applied as the pulse circuit. The “H bridge†switching circuit is used as the drive circuit. The electromagnetic force applied on the piston is considered as the constant force. The work efficiency of magnetic pump can be improved in our work. The electromagnetic force between the uniform magnetic field and permanent magnet can be also calculated and measured by variable frequency magnetic pump with miniaturization.