A piezoelectric ceramic fan with its own sensor function
A piezoelectric ceramic and piezoelectric ceramic sheet technology, applied in the field of piezoelectric ceramics, can solve problems such as failure to achieve heat dissipation, mismatch of resonant frequency, and reduced swing of fan blades, achieve good economic and social effects, reduce Internal stress, the effect of improving flexibility
Active Publication Date: 2017-08-11
JIANGSU UNITED CAN ELECTRONICS TECH
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Problems solved by technology
With the long-term operation of the piezoelectric fan, due to various factors such as the aging of the piezoelectric material itself, the temperature change of the working environment, and the adhesion of dirt such as dust, the resonant frequency of the piezoelectric fan assembly will change, and the output frequency of the drive power has changed. If it does not match the resonant frequency of the piezoelectric fan assembly, the swing of the fan blades will be greatly reduced, and the expected heat dissipation effect will not be achieved
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[0018] 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.
[0019] Such as figure 1 and figure 2 As shown, the piezoelectric ceramic fan with its own sensor function includes two piezoelectric ceramic sheets 1, a composite material layer 2, a metal sheet 3 and a mounting seat 4; -, +, -” are arranged and adhered on the upper and lower corresponding surfaces of the composite material layer 2; the free end of one piezoelectric ceramic sheet 1 is connected to the metal sheet 3, and the other end is connected with another piezoelectric ceramic sheet 1 and the composite material layer 2 are installed together in the mounting seat 4, and the lead wires 7 provided on the piezoelect...
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The invention discloses a piezoelectric ceramic fan with a sensing function. The piezoelectric ceramic fan with the sensing function comprises piezoelectric ceramic plates, a composite material layer, a metal sheet and a mounting base, wherein the number of the piezoelectric ceramic plates is two, and the piezoelectric ceramic plates adhere to the two corresponding surfaces of the composite material layer in the positive, negative, positive and negative polarization directions; one end of each piezoelectric ceramic plate is connected with the metal sheet, the other end of each piezoelectric ceramic plate is installed in the mounting base, and outgoing lines arranged on the piezoelectric ceramic plates and the composite material layer are guided out of the mounting base; two independent piezoelectric ceramic areas are divided on the electrode surface of a piezoelectric ceramic positive electrode, and include a sensor function area and a drive use area. According to the piezoelectric ceramic fan with the sensing function, due to the fact that a piezoelectric sensing portion in a piezoelectric fan assembly is detected and controlled, the resonant frequency of the piezoelectric fan assembly is consistent to the power source output frequency, fan blades can achieve the maximum swing amplitude, and the optimal heat dissipation effect can be achieved.
Description
technical field [0001] The invention belongs to the technical field of piezoelectric ceramics, and in particular relates to a piezoelectric ceramic fan with a sensor function. Background technique [0002] At present, the piezoelectric ceramic fan cooling system is mainly composed of two parts: the piezoelectric fan blade and the piezoelectric fan drive power supply. Its working principle is to use the inverse piezoelectric effect of the piezoelectric ceramic. Electric ceramics will deform (displace), apply a certain frequency of alternating voltage, and through mechanical amplification, finally achieve the effect of a fan with stable wind direction, high speed, and long-term operation. By adjusting the conversion frequency of the driving power supply to be consistent with the resonance frequency of the piezoelectric fan assembly itself, the fan blades can reach the maximum swing. With the long-term operation of the piezoelectric fan, due to various factors such as the agin...
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IPC IPC(8): H02N2/14F04D33/00
CPCF04D27/004F04D33/00Y02B30/70
Inventor 杨杰张伟东黄玉喜
Owner JIANGSU UNITED CAN ELECTRONICS TECH