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Direct-current piezoelectric type fan

A piezoelectric and fan technology, applied in circuits, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc., can solve the problem that the air volume cannot reach the heat dissipation, the piezoelectric fan amplitude cannot be too large, and the space thickness cannot be Small and other problems, to achieve the effect of increasing the output air volume

Inactive Publication Date: 2014-02-05
AUDIOWELL ELECTRONICS GUANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing piezoelectric fans are limited by their amplitude, so that the thickness of the space used to place the piezoelectric fan cannot be smaller than the amplitude of the piezoelectric fan
Now the thickness of portable devices is getting smaller and smaller, so the amplitude of the piezoelectric fan installed inside cannot be too large, but too small amplitude will make the air volume not meet the heat dissipation requirements

Method used

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  • Direct-current piezoelectric type fan
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  • Direct-current piezoelectric type fan

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Embodiment Construction

[0022] refer to Figure 1 to Figure 6 , the present invention is a DC piezoelectric fan, comprising a circuit module and a fan blade group connected to the circuit module, the fan blade group includes a base 1 and a plurality of piezoelectric units 2 arranged in parallel on the base 1, The piezoelectric unit 2 includes a piezoelectric vibrator 21 and a blade 22 attached to the piezoelectric vibrator 21 and extending out of the piezoelectric vibrator 21 .

[0023] This DC piezoelectric fan installs several piezoelectric units 2 in parallel on the base 1, generates a DC signal through the circuit module and drives multiple piezoelectric vibrators 21 to vibrate in the same phase at the same time, so that the piezoelectric unit 2 does not increase significantly. In the case of the amplitude of the blade 22, the output air volume of the piezoelectric fan is effectively increased.

[0024] As a preferred embodiment of the present invention, the circuit module includes a signal soun...

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Abstract

The invention discloses a direct-current piezoelectric type fan which comprises a circuit module and a fan blade group connected with the circuit module. The fan blade group comprises a base and a plurality of piezoelectric units parallelly arranged on the base, every piezoelectric unit comprises a piezoelectric vibrator and a blade which covers the piezoelectric vibrator and extends to the outside of the piezoelectric vibrator. The plurality of piezoelectric units are parallelly installed on the base, direct current signals are generated through the circuit module, a plurality of piezoelectric vibrators are driven simultaneously to generate in-phase vibration, and accordingly the output air volume of the piezoelectric type fan is effectively increased on the conditions that the amplitude of the blades in the piezoelectric units is not increased obviously. The direct-current piezoelectric type fan is used for the field of piezoelectric devices.

Description

technical field [0001] The invention relates to the field of piezoelectric devices, in particular to a piezoelectric fan. Background technique [0002] Existing and common piezoelectric fans are usually simple in structure and small in size, and are currently used in many portable devices for heat dissipation. [0003] Existing piezoelectric fans are limited by their amplitude, so that the thickness of the space for placing the piezoelectric fan cannot be smaller than the amplitude of the piezoelectric fan. However, the thickness of today's portable devices is getting smaller and smaller, so the amplitude of the piezoelectric fan installed inside cannot be too large, but too small amplitude will make the air volume unable to meet the heat dissipation requirements. Contents of the invention [0004] In order to solve the above problems, the present invention provides a combined DC piezoelectric fan that can effectively increase the air volume. [0005] The technical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D33/00H10N30/00
CPCF04D33/00H10N30/2042
Inventor 李健黎天文彭波
Owner AUDIOWELL ELECTRONICS GUANGDONG
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