Flow resistance testing device of valveless piezoelectric pump

Abstract

The invention discloses a flow resistance testing device of a valveless piezoelectric pump. The device comprises a water tank, wherein the water tank is connected with the to-be-tested valveless piezoelectric pump through a liquid guide pipe, the liquid guide pipe is provided with a one-way valve, the water tank is separated into a water storage tank and a working water tank by a separating plate, the separating plate is provided with a water inlet hole, the side wall of the working water tank is provided with an outflow hole, the outflow hole is connected with the liquid guide pipe through the one-way valve, and the interior of the working water tank is provided with a water feed assembly which is used for controlling the opening and closing of the water inlet hole. Compared with the traditional flow resistance testing device, the flow resistance testing device of the valveless piezoelectric pump has the advantages that the automatic or semi-automatic water feed function is realized, and the stability and accuracy of test data are ensured; the distribution of test data points is uniform, and the action rule can be easily analyzed and researched; and the test process and the test method are more standard, the operation is simple, and the repetitiveness of the data points in certain position is better.

Description

technical field [0001] The invention relates to a device for testing the flow resistance of a piezoelectric pump, in particular to a device for testing the flow resistance of a valveless piezoelectric pump, and belongs to the field of fluid machinery. Background technique [0002] Piezoelectric pumps are small and micro fluid pumps powered by piezoelectric ceramics. They have the advantages of small size, light weight, stable operation, good operability and easy integrated manufacturing. Piezoelectric pump is a pioneer product of micro-pump manufacturing technology, which can be widely used in various civil and industrial applications such as small mobile equipment, home appliances, medical equipment, petrochemical equipment, biomedicine, fine chemicals, aerospace, instrumentation, and IC chip cooling. field. It is highly efficient, energy-saving, and environmentally friendly. It will effectively promote the technological revolution of related industries, improve product ma...

AI Technical Summary

Problems solved by technology

Such test device often has the following problems: 1. the liquid level in the container is highly unstable

Due to the narrow range of flow velocity adjustment, the speed change range is small and the resistance coefficient value range is small ③The resistance coefficient value distribution range is not uniform

Due to the few controllable data points and they are concentrated in a certain fixed area, it is difficult to analyze the trend of resistance

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