A Noise Reduction Transducer Device and Method Combining Helmholtz Resonance Effect and Venturi Effect

Abstract

The invention provides a noise reduction transduction device and method combined with Helmholtz resonance effect and Venturi effect, which belong to the technical field of noise control and new energy power generation. The electric sheet, the sound energy generating noise reduction board is provided with a working unit composed of a Helmholtz resonator and a Venturi channel; the Helmholtz resonator is vertically arranged, including a connected Helmholtz resonator cavity and a neck , the top of the Helmholtz resonance cavity is closed by a piezoelectric sheet arranged on the top opening of the acoustic power generation noise reduction board; the Venturi channel runs through the front and back of the acoustic power generation noise reduction board transversely, including the connected entrance section, Throat and exit sections, the throat communicates with the neck of the Helmholtz resonator. Combining the Helmholtz resonance effect and the Venturi effect in one device, it can collect noise and airflow in the environment at the same time, improve energy conversion efficiency, turn noise into treasure while reducing noise, and use noise to generate electricity.

Description

technical field [0001] The invention belongs to the technical field of noise control and new energy power generation, and specifically discloses a noise-reduction transduction device and a method combining Helmholtz resonance effect and Venturi effect. Background technique [0002] Human beings have used the energy on the earth to provide convenience for themselves for thousands of years. The use of wind energy, thermal energy and light energy has greatly facilitated the development of human life. However, in the 21st century, with the continuous development of human science and technology and the continuous growth of the world population, human demand for energy is increasing, and blindly using non-renewable energy is no longer a long-term solution. Despite extensive research into renewable energy harvesting technologies, there are still neglected and wasted sources of energy all around us, and one of them is sound energy, which is produced everywhere but rarely used. And ...

AI Technical Summary

Problems solved by technology

Despite extensive research on renewable energy harvesting technologies, there are still neglected and wasted sources of energy around us, and one of them is sound energy, which is produced everywhere but rarely utilized

And at present, people regard noise as a kind of harm and suppress it. The processing of noise only focuses on the suppression of noise, ignoring the possibility that noise can be used by human beings as a widespread energy.

Although this method can effectively isolate or reduce noise, the noise energy is converted into heat energy, resulting in a waste of resources.

[0003] With the rapid development of microelectronic devices and wireless sensor network technology, the scale of their use is increasing exponentially, but the energy supply problem for these devices has always limited their applications. At present, most small portable electronic devices and wireless sensors The energy supply in China has been mainly powered by batteries. Although the battery technology is mature and easy to use, the life of the battery is very short for these electronic devices, and the cost of replacing the battery is expensive in some occasions, even It is difficult to realize, and a large number of discarded batteries will cause long-term pollution to the surrounding environment. The defects of batteries hinder the development of small portable electronics and wireless sensors. Therefore, it is of great significance to study new energy supply technologies

This invention only uses the Helmholtz resonator to collect sound energy, and the collection efficiency is low. At the same time, the piezoelectric ceramic sheet is fixed on the Helmholtz resonator by adhesive method. This fixing method is unstable, easy to fall off, and not easy to Replacing the piezoceramics

[0007] Existing acoustic power generation devices basically use a single physical effect to convert energy, and do not integrate multiple physical effects into one device for energy conversion and noise suppression

Moreover, in the prior art, most of the piezoelectric sheets and piezoelectric cantilever beams are glued. This fixing method is greatly affected by human factors, resulting in large performance differences between individuals.

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