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Piezoelectric fan with double bodies working alternatively

An alternate working, piezoelectric technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc. Shortage and other problems, to achieve good economic and social effects, reduce internal stress, and good elasticity

Active Publication Date: 2014-02-12
JIANGSU UNITED CAN ELECTRONICS TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

Existing fan blades are bonded by ceramic sheets and driven by alternating current. They work at the resonance point of piezoelectric ceramic sheets for a long time. Piezoelectric ceramics are very fatigued and prone to fragmentation. Usage requirements

Method used

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  • Piezoelectric fan with double bodies working alternatively

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Embodiment Construction

[0015] The present invention will be further clarified below in conjunction with specific drawings. This specific embodiment is implemented on the premise of the technical solution of the present invention. It should be understood that these modes are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0016] like figure 1 As shown, the two-body alternating working piezoelectric fan includes two piezoelectric ceramic sheets 1, a composite material layer 2 and a metal sheet 3; one of the two piezoelectric ceramic sheets 1 has a positive polarization direction, and the other has a positive polarization direction Negative, respectively adhered to the corresponding two sides of the composite material layer; one end of the piezoelectric ceramic sheet 1 is connected to the metal sheet 3, and the other end is connected to the electrode, one of which is connected to the negative electrode, and the other is connected to the p...

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Abstract

The invention discloses a piezoelectric fan with double bodies working alternatively. The piezoelectric fan comprises piezoelectric ceramic chips, a composite material layer and a metal sheet. The number of the piezoelectric ceramic chips is two, one piezoelectric ceramic chip is positive in polarization direction, the other piezoelectric ceramic chip is negative in polarization direction, and the two piezoelectric ceramic chips are adhered to the two corresponding faces of the composite material layer respectively. One end of each piezoelectric ceramic chip is connected with the metal sheet, and the other end of each piezoelectric ceramic chip is connected with an electrode, wherein one piezoelectric ceramic chip is connected with a negative electrode, and the other piezoelectric ceramic chip is connected with a positive electrode. According to the piezoelectric fan with the double bodies working alternatively, the two bodies are used for alternative working, piezoelectric ceramic can rest for half of the time, over fatigue of the piezoelectric ceramic can be lowered, the flexibility of vanes is improved, the piezoelectric fan can also achieve the best swing amplitude, and the best effect of the fan is guaranteed. The metal sheet is used as a metal amplifier, the metal sheet is made of high-quality alloy materials, good elasticity is achieved, and the best fan effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of electric fans, and in particular relates to a two-body alternately working piezoelectric electric fan. Background technique [0002] At present, the main structural components of the piezoelectric fan are composed of two parts: the piezoelectric fan blade and the piezoelectric fan power drive. It is to use the inverse piezoelectric effect of piezoelectric ceramics. When energized, piezoelectric ceramics will generate vibration and displacement, and through mechanical transmission, finally achieve a good cooling effect with stable wind direction, high speed, and long-term work. Existing fan blades are bonded by ceramic sheets and driven by alternating current. They work at the resonance point of piezoelectric ceramic sheets for a long time. Piezoelectric ceramics are very fatigued and prone to fragmentation. Usage requirements. Contents of the invention [0003] Purpose of the invention: Aiming at the ...

Claims

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Application Information

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IPC IPC(8): H02N2/18
Inventor 刘建国黄玉喜谢祝辉
Owner JIANGSU UNITED CAN ELECTRONICS TECH
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