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Acoustic metamaterial sound absorber

An acoustic metamaterial and sound absorber technology, applied in the field of sound-absorbing materials, can solve problems such as limited sound-absorbing performance and inability to achieve effects

Pending Publication Date: 2022-03-18
东莞市瑞勤电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ordinary porous materials have limited sound absorption performance, and often cannot achieve the desired effect.

Method used

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  • Acoustic metamaterial sound absorber
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  • Acoustic metamaterial sound absorber

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Embodiment Construction

[0017] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] The terms "first", "second", "third" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclus...

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Abstract

The invention discloses an acoustic metamaterial sound absorber which comprises an upper layer structure and a lower layer structure, the upper layer structure comprises an upper layer base body, a plurality of circular holes distributed in a linear array or a plane array are formed in the upper layer base body, and a film which covers the circular holes and has preset tension is arranged on the upper surface of the upper layer base body. A first permanent magnet located in the center of the circular hole is pasted on the film, and a closed metal circular ring surrounding the circular hole is arranged on the lower surface of the upper-layer base body; the lower-layer structure comprises a lower-layer base body with a frame support, a second permanent magnet is arranged at the position, corresponding to the round hole, of the lower-layer base body, and the magnetic pole directions of the first permanent magnet and the second permanent magnet are the same; the upper-layer structure and the lower-layer structure are bonded to form an integral structure. According to the invention, better sound absorption and noise reduction effects can be realized.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to an acoustic metamaterial sound absorber. Background technique [0002] Most of the sound-absorbing materials are loose and porous materials, such as slag wool, blankets, etc. The sound-absorbing mechanism is that the sound waves penetrate into the pores of the material, and the pores are mostly open holes that communicate with each other internally. The fine fibers vibrate mechanically, so that the sound energy is converted into heat energy. However, ordinary porous materials have limited sound absorption performance, and often cannot achieve the desired effect. Contents of the invention [0003] The main purpose of the present invention is to provide an acoustic metamaterial sound absorber to achieve better sound absorption and noise reduction effects. [0004] The acoustic metamaterial sound absorber provided by the present invention includes an upper stru...

Claims

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Application Information

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IPC IPC(8): G10K11/168
CPCG10K11/168
Inventor 吴宗汉张绍年陈为波
Owner 东莞市瑞勤电子有限公司
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