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bidirectional piezoelectric pump

A piezoelectric pump and pump body technology, applied in the direction of pumps, pump control, pumps with flexible working elements, etc., can solve the problems of large flow pulsation and small pumping flow, and achieve positive delivery flow and simple structure Effect

Active Publication Date: 2020-09-11
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valveless piezoelectric pump has a simple structure, which is conducive to miniaturization design, but the pumping flow rate is small, the flow pulsation is large, and it can only transport fluid in one direction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as Figure 1 to Figure 6 As shown, the present invention provides a bidirectional piezoelectric pump, which includes a pump body 4, an electric control system, an adjustment mechanism 9, a first flexible spoiler assembly, a second flexible spoiler assembly, and a pump for changing the volume of the pump body 4. Piezoelectric vibrator 1, the pump body 4 is provided with a pump cavity 5 and the first flow channel 6 and the second flow channel 7 connecting the pump cavity 5 and the outside world, the top of the pump body 4 is provided with a counterbore 8, the bottom of the counterbore 8 is connected to the pump The cavity 5 is connected, the piezoelectric vibrator 1 is connected to the bottom of the counterbore 8, the output end of the electronic control system is electrically connected to the piezoelectric vibrator 1, and the first flexible spoiler assembly has two symmetrically arranged along the center line of the first flow channel 6. The first flexible spoiler 2...

Embodiment 2

[0062] see Figure 7 , the difference between this embodiment and Embodiment 1 is that both the first flow channel 6 and the second flow channel 7 have certain flexibility, specifically, the elastic modulus of the first flow channel 6 and the elastic modulus of the second flow channel 7 Both are 2MPa~7MPa. The material of the first channel 6 and the second channel 7 is polydimethylsiloxane or silica gel. The adjustment mechanism 9 can make the flexible spoiler swing in the flow channel by squeezing the outer wall of the flow channel, thereby changing the distance between the free ends of the two opposite flexible spoilers.

[0063] Preferably, the adjustment mechanism 9 includes a second control device, two third drive devices, two fourth drive devices, two third transmission devices 905, two fourth transmission devices 906, two symmetrically distributed in the first channel 6 on both sides of the third cam device 907 and two fourth cam devices 908 symmetrically distributed ...

Embodiment 3

[0068] see Figure 8 with Figure 9 The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the adjustment mechanism 9 includes a third control device located outside the pump body 4, a fifth drive device 910, a sixth drive device, a fifth transmission device 909, and a sixth drive device. Transmission device, two first magnets 911 on both sides of the pump body 4, two second magnets 912 on both sides of the pump body 4, two third magnets 913 and two fourth magnets 914 inside the pump body 4 , the output end of the third control device is electrically connected to the input end of the fifth driving device 910 and the input end of the sixth driving device respectively, the output end of the fifth driving device 910 is connected to the input end of the fifth transmission device 909, and the sixth The output end of the driving device is connected to the input end of the sixth transmission device, the output end of the fifth transmission device 909 is con...

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Abstract

The invention discloses a bidirectional piezoelectric pump which comprises a pump body, an electronic control system, a regulating mechanism, a first flexible spoiler assembly, a second flexible spoiler assembly and a piezoelectric vibrator for changing the volume of the pump body. The pump body is provided with a pump cavity, and a first runner and a second runner for communicating the pump cavity and the outside; a counter bore is formed in the top part of the pump body; the bottom part of the counter bore communicates with the pump cavity; the piezoelectric vibrator is connected to the bottom part of the counter bore; the output end of the electronic control system is electrically connected with the piezoelectric vibrator; the first flexible spoiler assembly is provided with two first flexible spoilers; the first end part of each first flexible spoiler is fixedly connected with the inner wall of the first runner; the second flexible spoiler assembly is provided with two second flexible spoilers; the second end part of each second flexible spoiler is fixedly connected with the inner wall of the second runner; and the output end of the regulating mechanism is connected with each first flexible spoiler and each second flexible spoiler. The bidirectional piezoelectric pump provided by the invention is simple in structure, and capable of realizing bidirectional pumping and adjusting a pumping flow.

Description

technical field [0001] The invention relates to the technical field of fluid machinery, in particular to a bidirectional piezoelectric pump. Background technique [0002] The piezoelectric pump is a new type of fluid driver. It does not need an additional drive motor, but uses the inverse piezoelectric effect of the piezoelectric ceramic material to deform the piezoelectric vibrator and change the volume of the pump chamber to achieve fluid output. The vibration of the piezoelectric vibrator transports the liquid. Compared with other traditional pump bodies, the piezoelectric pump has the characteristics of simple structure, small volume, low energy consumption and no electromagnetic interference. [0003] Piezoelectric pumps can be divided into valved piezoelectric pumps and valveless piezoelectric pumps. Among them, the pumping flow rate of the valved piezoelectric pump is larger, and the output pressure is higher, but its structure is very complicated, and the valve pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B43/04F04B49/06
CPCF04B43/046F04B49/065
Inventor 张建辉包启波赖立怡唐茗杨冠宇潘殷豪黄智
Owner GUANGZHOU UNIVERSITY