Prezoelectric ceramics sheet for mfg. mini-pump and mini air pump

Abstract

The invention is a piezoelectric ceramic plate for manufacturing a micro-pump and a micro-air pump. Its piezoelectric ceramic crystal membrane is bonded with a metal substrate through insulating layer, the insulating layer provides a safe creepage distance between the membrane and the substrate, the other surface of the metal substrate is provided with a pressure resistant protective layer, and the surface of the membrane is provided with a protective layer. The upper and lower covers of the micro-air pump are seal-fixed with the upper and lower ends of a pump body, respectively, the pump body is provided with a round pump cavity, the pump core is the membrane, the metal substrate is supported by sealing ring to be elastically fixed in the pump cavity and closes the lower end of the pump body into a working pump cavity, which is connected through one-way valve with air suction and exhaust pipes. The invention has high energy utilization ratio, simple structure and low noise.

Description

Technical field [0001] The invention relates to a structure of a piezoelectric ceramic sheet for manufacturing a micro pump and a structure of a micro air pump. In particular, it is a structure of piezoelectric ceramic sheet with high pressure resistance, large deformation coefficient, strong amplitude, and deformation and crack resistance, and a micro air pump structure using the piezoelectric ceramic sheet. Background technique [0002] Currently, the diaphragm type or electromagnetic type micro air pump used in the prior art has a complex structure, low efficiency, and high electromagnetic vibration noise, and its use range is limited, especially in a residential environment. Such as household ornamental fish tank oxygenation, household air incense generator, etc. At the same time, due to the complicated structure and low efficiency of the diaphragm type or electromagnetic type air pump, the miniature air pump of the prior art cannot be miniaturized, consumes high power, and w...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the piezoelectric ceramic sheet used in the piezoelectric pump of the prior art, the pressure resistance is poor, the piezoelectric ceramic crystal diaphragm has poor toughness, and the elastic modulus is small. When the piezoelectric ceramic sheet works, the electric ceramic crystal of the piezoelectric ceramic sheet The diaphragm is prone to cracking, which cannot meet the needs of use, especially the lack of technology that cannot meet the needs of manufacturing air pumps. The present invention provides a piezoelectric ceramic crystal diaphragm with high pressure resistance, good toughness, and large elastic modulus. When the piezoelectric ceramic sheet is working, the piezoceramic crystal diaphragm of the piezoelectric ceramic sheet does not crack. The structure of the piezoelectric ceramic sheet used to manufacture the micropump and the micro air pump structure using the piezoelectric ceramic sheet

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