Breeze power generation device based on piezoelectric effects

A power generation device and piezoelectric effect technology, applied in the field of breeze power generation devices, can solve problems such as inability to generate electricity, harsh environmental requirements, unstable wind speed, etc., and achieve the effects of reducing energy loss, reducing friction force, and small bending deformation

Inactive Publication Date: 2012-11-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of generator requires high wind speed and strict requirements on the environment. When the win

Method used

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  • Breeze power generation device based on piezoelectric effects
  • Breeze power generation device based on piezoelectric effects
  • Breeze power generation device based on piezoelectric effects

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings. Such as figure 1 , figure 2 As mentioned above, the breeze power generation device of the present invention adopts a lift-type fan, the blades are lift-type blades, and the blades 1 are made of composite materials. A plurality of blades are installed and fixed at a certain angle through the blade bracket 4, and the blade bracket 4 is welded by hollow stainless steel pipes. The blade support 4 is fixedly connected with the rotating shaft 3 and rotates together under the driving of the wind, such as figure 1 shown. The rotating shaft 3 is supported by two upper and lower bearings 6, and a gear 8 is installed on the rotating shaft. The teeth of the gear are sharp teeth, and the number of teeth is M. In this embodiment, the gear has 11 teeth and is used to move the piezoelectric vibrator.

[0032] The piezoelectric vibrator is set on the periphery of the gear, such a...

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Abstract

The invention discloses a breeze power generation device based on piezoelectric effects. The breeze power generation device comprises a base plate, piezoelectric vibrators and a lifting fan, wherein the piezoelectric vibrators and the lifting fan are arranged on the base plate, a cam with teeth is connected onto a rotation shaft of the lifting fan, the piezoelectric vibrators are evenly distributed on the outside of the cam, a tooth crest of the cam is pinnacle, and teeth number of the cam is N, the number of the piezoelectric vibrators is M, the M and the N are relatively prime, and 2<=M<=18, and 4<=N<=19. The teeth number of the cam and the number of the piezoelectric vibrators are relatively prime, the cam can be guaranteed to be contacted with one piezoelectric vibrator at the same time to reduce a peak value of transient drag and enable the lifting fan to be stable in a rotation process, the tooth crest of the cam is polished to be tip, and when the piezoelectric vibrators are stirred, no contact exists. After that, the piezoelectric vibrators begin to freely vibrate, and energy caused by stirring and wiping each time is effectively used. The breeze power generation device effectively reduces rotation resistance, improves energy utilization efficiency and enables start-up wind speed and work speed to be lowered compared with the prior art.

Description

technical field [0001] The invention relates to a breeze generating device, in particular to a piezoelectric generating device suitable for a wireless sensor network. Background technique [0002] The large number of applications of wireless sensor networks makes the energy supply of wireless sensors an unresolved problem. The existing wireless sensor networks mainly use the traditional power supply mode of battery power supply, and the traditional function mode has limited energy supply time, and often needs to replace the battery. Therefore, it is a very effective solution to extract all the tiny energy from nature and realize the self-supply system device. [0003] Due to the low power consumption requirements of wireless sensors, it is possible to utilize tiny amounts of energy. The present invention develops a magnetic levitation breeze power generation device based on the piezoelectric effect, which uses the wind to drive the blades to drive the rotor of the generator...

Claims

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Application Information

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IPC IPC(8): F03D9/00H02N2/18
CPCY02E10/72
Inventor 周成锋叶明曹丽洁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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