A NEW TYPE OF ELECTROMAGNETIC-VIBRATION-TYPE SMALL PUMP WITH HIGH EFFICIENCY

Abstract

Small pumps with excellent performance are in demand in various industrial fields. In the present study, a new type of small underwater insertion pump that combines electromagnetic force and mechanical resonance was developed. A prototype electromagnetic-vibration pump with a one-valve structure in which the vibration component and water are separated by a thin film was constructed. The shape of this pump was optimally designed for the casing and valves. Rod and piston-type casings have been proposed to effectively use the displacement of the vibration component. By the inertial effect of water due to the operating principle, thin film separation, and shape optimization, the maximum efficiency of this pump was 19.1%, which exceeds that of previously proposed small pumps. In addition, as a normal use of the prototype pump, the pump with an acrylic pipe attached to the inlet port was improved, and its flow rate characteristics were examined. These two pumps can be directly driven by the power of a power outlet by tuning the resonance frequency of the vibration component. The proposed pump can be used in two ways depending on the application.