Valveless piezoelectric pump with separated driving structure and flow resistance structure and working method of valveless piezoelectric pump

Abstract

The invention discloses a valveless piezoelectric pump with separated driving structure and flow resistance structure and a working method of the valveless piezoelectric pump. The middle of a pump base I of the driving structure is provided with a liquid cavity and a pump cavity from bottom to top, a piezoelectric vibrator is placed in the pump cavity, buffer grooves I in the two ends of the pump base I are connected with the liquid cavity in the middle through direct current grooves, the lower end of a water inlet pipe I penetrates through a water inlet I of a pump cover I and is connected with a buffer tank I, and the lower end of a water outlet pipe I penetrates through a water outlet I of the pump cover I and is connected with the buffer tank I; and buffer grooves II at the two ends of a pump base II of the flow resistance structure are connected with a water storage area in the middle through flow pipes, the lower end of a water inlet pipe II penetrates through a water inlet II of a pump cover II to be connected with the water storage area, and the lower ends of a plurality of water outlet pipes II penetrate through a water outlet II of the pump cover II to be connected with the buffer grooves II. According to the pump, the water inlet pipes II and the water outlet pipes I are mutually connected to realize mutual connection of the flow resistance structure and the driving structure, and the plurality of flow pipes are arranged on the side of the flow resistance structure, so that the purposes of generating larger liquid one-way flow quantity and strong reverse flow stopping property in the same pressure difference are achieved.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery, and more specifically relates to a valveless piezoelectric pump with separated driving and flow resistance structures and a working method thereof. Background technique [0002] The valveless piezoelectric pump is a product of multidisciplinary integration integrating fluid mechanics, material mechanics, vibration mechanics, electronics, mechanical design and theory. It has the advantages of simple structure, high pumping precision, no mechanical wear, strong anti-electromagnetic interference ability, etc., and has important application prospects in micro-electromechanical fields such as biomedicine, chip cooling, and fluid transportation. [0003] Valveless piezoelectric pumps are generally divided into conical flow tube valveless piezoelectric pumps, Y-shaped flow tube valveless piezoelectric pumps, arc-shaped flow tube valveless piezoelectric pumps and asymmetric slope cavity bottom va...

AI Technical Summary

Problems solved by technology

[0003] Valveless piezoelectric pumps are generally divided into conical flow tube valveless piezoelectric pumps, Y-shaped flow tube valveless piezoelectric pumps, arc-shaped flow tube valveless piezoelectric pumps and asymmetric slope cavity bottom valveless piezoelectric pumps. , the valveless piezoelectric pump is basically a fluid drive device composed of an expansion flow tube, a compression flow tube and a piezoelectric vibrator. Poor flow resistance severely restricts the application of valveless piezoelectric pumps

Images