Minitype piezoelectric pump based on optical transmission welding, piezoelectric pump unit and assembling method

A technology of optical transmission and assembly method, which is applied to the parts of pumping devices for elastic fluids, pump devices, pumps with flexible working elements, etc. and other problems, to achieve the effect of simplifying processing difficulty, reducing equipment investment, simplifying structure and assembly process

Pending Publication Date: 2019-04-26
常州威图流体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of insufficient miniaturization of the structure of the piezoelectric pump in the prior art, complex production process, and insufficient environmental protection in

Method used

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  • Minitype piezoelectric pump based on optical transmission welding, piezoelectric pump unit and assembling method
  • Minitype piezoelectric pump based on optical transmission welding, piezoelectric pump unit and assembling method
  • Minitype piezoelectric pump based on optical transmission welding, piezoelectric pump unit and assembling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Such as Figure 1-2 As shown in 11-14, this embodiment provides a miniature piezoelectric pump based on optical transmission welding, which includes an excitation unit 1, a valve body unit 2, and a valve seat unit 3 that are sequentially stacked from top to bottom.

[0073] The excitation unit 1 provides a driving force for the piezoelectric pump. The excitation unit 1 includes the piezoelectric vibrator 11 and the cavity diaphragm 12, and the piezoelectric vibrator 11 is arranged on the upper surface of the cavity diaphragm 12 and in the center. Alignment settings. The piezoelectric vibrator 11 includes a piezoelectric ceramic 111 and a piezoelectric vibrator substrate 112, and the piezoelectric ceramic 111 is arranged on the upper surface of the piezoelectric vibrator substrate 112 and aligned with the center. A pump cavity 41 with a certain accommodation space is formed between the upper surface of the valve body unit 2 and the lower surface of the excitation unit. Pre...

Embodiment 2

[0087] Such as Figure 3-4 As shown in 11-14, the structure of the miniature piezoelectric pump in this embodiment and the first embodiment is basically the same. The only difference is that the miniature piezoelectric pump in this embodiment also includes a cavity diaphragm 4, which is provided with Between the cavity diaphragm 12 and the upper valve plate pressing plate 21. The cavity diaphragm 4 is provided with a through hole, and the cavity diaphragm 12, the cavity diaphragm 4 and the upper valve plate pressing plate 21 together form a pump cavity 41. Preferably, the cavity diaphragm 4 may have a planar structure, and no sinking structure is required on its outer periphery, which is convenient for processing.

[0088] In this embodiment of the miniature piezoelectric pump based on optical transmission welding, its component parts, the cavity diaphragm 12, the valve body unit 2, the valve seat unit 3, and the cavity diaphragm 4 are all made of thermoplastic, such as PP, PC, P...

Embodiment 3

[0098] Such as Figure 5-8 As shown in 11-14, the structure of the miniature piezoelectric pump in this embodiment and the second embodiment is basically the same, and the difference lies in the structure of the valve seat unit.

[0099] The valve seat unit 3 includes an upper valve seat diaphragm 32, a valve seat 31, a lower valve seat diaphragm 33, and a bottom plate 34. The upper valve seat diaphragm 32, the valve seat 31, the lower valve seat diaphragm 33 and the bottom plate 34 are arranged from top to bottom. Stack in turn. The upper valve seat diaphragm 32 is provided with a first flow hole 321 and a second flow hole 322 with the same inner diameter. The valve seat 31 is provided with a third flow hole 313 communicating with the inlet sink cavity 311 and The fourth flow hole 314 communicating with the outlet flow chamber 312, the inner diameter of the third flow hole 313 and the fourth flow hole 314 are equal, the inner diameters of the inlet flow chamber 311 and the outle...

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Abstract

The invention relates to a fluid pump, in particular to a minitype piezoelectric pump based on optical transmission welding, a piezoelectric pump unit and an assembling method. The minitype piezoelectric pump based on optical transmission welding comprises an excitation unit, a valve body unit and a valve seat unit, wherein the excitation unit, the valve body unit and the valve seat unit are laminated sequentially from top to bottom; the excitation unit is used for providing driving force for the piezoelectric pump; the excitation unit comprises a piezoelectric oscillator and a cavity body oscillating film; the piezoelectric oscillator is arranged on the upper surface of the cavity body oscillating film; the cavity body oscillating film, the valve body unit and the valve seat unit are allmade of thermoplastic plastics; and the excitation unit, the valve body unit and the valve unit are welded by adopting an optical transmission welding way in a laminating manner. The problems that a structure of the piezoelectric pump in the prior art is not miniaturized enough, the production process is complicated, and a production process is not so environmentally friendly are solved.

Description

Technical field [0001] The invention relates to a fluid pump, in particular to a miniature piezoelectric pump based on optical transmission welding, a piezoelectric pump set and an assembly method. Background technique [0002] Piezoelectric pump is a new type of fluid driver. It does not require an additional drive motor, but uses the inverse piezoelectric effect of the piezoelectric ceramic to deform the piezoelectric vibrator, and then the volume change of the pump cavity is generated by the deformation to achieve fluid output or the piezoelectric vibrator generates fluctuations to transmit fluid. Piezoelectric pump has the characteristics of simple structure, energy saving and environmental protection, small size, light weight, fast response speed, high energy conversion, no electromagnetic interference, etc. It can be used in fuel cell fuel supply, automobile engine fuel supply, electronic chip cooling, medical equipment, etc. field. [0003] Through searching and reviewing ...

Claims

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Application Information

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IPC IPC(8): F04B43/04F04B41/06F04B49/08F04B53/22F04B53/10F04B53/00
CPCF04B43/046F04B41/06F04B49/08F04B53/00F04B53/102F04B53/22
Inventor 周京京钟德坤焦会萌韦东东吴垠
Owner 常州威图流体科技有限公司
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