Two-chamber valveless piezoelectric pump

A valveless piezoelectric pump, piezoelectric ceramic technology, applied in the direction of pumps, pumps with flexible working elements, liquid variable capacity machinery, etc., can solve the problems of small flow, low pressure, etc., to achieve high pressure, large flow, simple structure

Inactive Publication Date: 2007-02-07
SOUTH CHINA AGRI UNIV
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AI Technical Summary

Problems solved by technology

[0002] Piezoelectric pump is a new type of fluid drive device. It is driven by the inverse piezoelectric effect of piezoelectric ceramics, and the drive power part, transmission part and pump body of the traditional electromagnetic pump are integrated into one. It has simple structure, small size, The advantages of thinness, light weight, low energy consumption, no noise, no electromagnetic interference, reliable operation, and large output power per unit volume have been used in many fields, especially for heat dissipation in the field of optoelectronic technology. In the existing valveless piezoelectric pump, when the piezoelectric element with simple structure is used, such as the piezoelectric ceramic disc directly pasted on the pump chamber of the metal elastomer, there are generally disadvantages such as small flow rate and low pressure.

Method used

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  • Two-chamber valveless piezoelectric pump
  • Two-chamber valveless piezoelectric pump
  • Two-chamber valveless piezoelectric pump

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Structural schematic diagram of the present invention is attached image 3 , attached Figure 4 As shown, the driving part of the micro-pump cymbal structure is formed by laminating the upper cymbal 1, the thin piezoelectric ceramic rings 3, 4, and the lower cymbal 6. The driving part is the upper cymbal 1, the sealing rubber ring 10, and the upper chamber cover 12 Fit together to form the upper cavity of the piezoelectric pump, wherein the water inlet 2 is the water inlet of the upper cavity, and the water outlet 11 is the water outlet of the upper cavity; The lower chamber of the piezoelectric pump is integrally formed, wherein the water inlet 5 is the water inlet of the lower chamber, and the water outlet 9 is the water outlet of the lower chamber.

[0023] The structural representation of the driving part of the present invention is as attached figure 1 ,...

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Abstract

The invention relates to a dual-chamber non-valve piezoelectric pump, which comprises: a driving element formed by adhered piezoelectric ceramic and flexible metal, a chamber cover and the water inlet and outlet on the chamber cover, wherein said driving element is inside the chamber cover to form the chamber; said piezoelectric pump uses the upper and lower driving elements with same structure; the piezoelectric ceramics of upper and lower driving elements are adhered; the upper driving element and the chamber cover form the upper chamber; the lower driving part and the chamber cover form the lower chamber. Since the invention uses the driving element that the flexible metal, piezoelectric ceramic ring or the disc are integrated, it has simple structure, large flux, high pressure, high reliability, non electromagnetic function, small volume and micro shape.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric pumps, in particular to a double-cavity valveless piezoelectric pump. technical background [0002] Piezoelectric pump is a new type of fluid drive device. It is driven by the inverse piezoelectric effect of piezoelectric ceramics, and the drive power part, transmission part and pump body of the traditional electromagnetic pump are integrated into one. It has simple structure, small size, The advantages of thinness, light weight, low energy consumption, no noise, no electromagnetic interference, reliable operation, and large output power per unit volume have been used in many fields, especially for heat dissipation in the field of optoelectronic technology. In the existing valveless piezoelectric pumps, when a piezoelectric element with a simple structure is used, such as a piezoelectric ceramic disc directly pasted on the pump chamber of a metal elastomer, there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B43/04
Inventor 张铁民
Owner SOUTH CHINA AGRI UNIV
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