Composite noise reduction board and noise reduction device

A noise reduction board and noise reduction technology, applied in chemical instruments and methods, sound-producing instruments, instruments, etc., can solve the problems of high cost, high cost, and many consumables, and achieve the effect of effective sound absorption and noise reduction treatment.

Inactive Publication Date: 2017-06-09
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, a muffler or a sound insulation cover is usually used for noise reduction treatment, but the muffler has extremely high requirements on the installation environment, and the cost is high. The sound insulation cover usually seals the noise source equipment in a small space, making it Separated from the surrounding environment to reduce the impact of noise on the environment, and the existing sound insulation enclosures usually use perforat

Method used

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  • Composite noise reduction board and noise reduction device
  • Composite noise reduction board and noise reduction device
  • Composite noise reduction board and noise reduction device

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Embodiment Construction

[0027] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The detailed description and accompanying drawings of the following embodiments are used to illustrate the principles of the present invention, but are not used to limit the scope of the present invention, that is, the present invention is not limited to the described preferred embodiments, and the scope of the present invention is defined by the claims .

[0028] Sound originates from the vibration of an object, which causes the vibration of the adjacent air to form sound waves, and propagates around in the air medium. When the sound is transmitted to the surface of the component material, part of the sound energy is reflected, part of the sound energy penetrates the material, and part of the sound energy is converted into heat energy due to the vibration of the component material or the friction with the surrounding medium when the...

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Abstract

The invention provides a composite noise reduction board and a noise reduction device. The composite noise reduction board comprises a noise absorption layer and a metal sound insulation layer. The sound absorption layer is provided with sound absorption apertures, and the cross section of the metal sound insulation layer has a C-shaped structure. The sound absorption layer is disposed in the C-shaped structure of the metal sound insulation layer in a composite way. The metal sound insulation layer with/having the C-shaped structure is used to insulate sounds from a noise source, and the sound absorption layer having the sound absorption apertures disposed in the C-shaped structure of the metal sound insulation layer is used to absorb the noises, and then the high-efficiency sound-absorption noise reduction processing of the noise source is realized, and therefore the composite noise reduction board has advantages of concise structure, economy, environmental protection, wide application range, and ability of facilitating assembly.

Description

technical field [0001] The invention relates to the technical field of noise control, in particular to a composite noise reduction board and a noise reduction device. Background technique [0002] At present, noise pollution has been regarded as one of the main environmental pollutions, which is in urgent need of treatment. In particular, traffic noise, industrial noise and construction noise mainly exist in densely populated cities. Noise pollution brings a lot of inconvenience to people's work and life, and even seriously affects their health. The country has also issued many related policies on governance. A series of noise standards and regulations have been formulated. [0003] In the prior art, a muffler or a sound insulation cover is usually used for noise reduction treatment, but the muffler has extremely high requirements on the installation environment, and the cost is high. The sound insulation cover usually seals the noise source equipment in a small space, maki...

Claims

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Application Information

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IPC IPC(8): G10K11/168B32B15/16B32B15/18B32B15/20B32B3/06B32B3/08B32B3/26B32B33/00
Inventor 李荐民顾菁宇王东宇燕翔宋刚宋全伟冯顺昌
Owner TSINGHUA UNIV
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