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Brazed honeycomb sound absorbing structure with micro-seam

A micro-slit and honeycomb technology, applied in the field of sound absorption and noise reduction, can solve the problems of being unable to adapt to harsh environments, harmful to human health, poor weather resistance, etc., to achieve improved sound absorption effects, easy cleaning, and good sound absorption effects

Pending Publication Date: 2019-01-25
中国船舶重工集团公司第七一四研究所 +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Porous fiber sound-absorbing materials generally have poor weather resistance, cannot adapt to harsh environments and affect life, and porous fiber-type sound-absorbing materials are harmful to human health
The existing resonant sound-absorbing materials are mainly perforated plates or micro-perforated plates. After the sound theory was widely used, Academician Ma Dayou proposed the theory of micro-slit sound-absorbing body. The sound-absorbing mechanism of micro-slit plate is similar to that of micro-perforated plate sound-absorbing body. They are all based on the principle of resonance sound absorption. Under the action of air vibration and friction on the wall of the opening, the sound energy is lost due to viscous damping and heat conduction.

Method used

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  • Brazed honeycomb sound absorbing structure with micro-seam
  • Brazed honeycomb sound absorbing structure with micro-seam
  • Brazed honeycomb sound absorbing structure with micro-seam

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0026] In one embodiment, as figure 1 As shown, the brazed micro-slit honeycomb sound-absorbing structure includes: a front panel, an intermediate core layer, and a rear panel, and the front panel, the rear panel, and the intermediate core layer are connected by brazing and welding. After installing the brazed micro-slit honeycomb sound-absorbing structure on an installation surface 6 (such as a wall), there is a cavity 5 between the brazed micro-slit honeycomb sound-absorbing structure 4 and the installation wall 6, The cavity depth is D2, and the core layer thickness is D1, such as figure 2 shown.

[0027] The existing panel and the honeycomb interlayer are mainly connected by adhesive bonding. Compared with the ...

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Abstract

A brazed microseam honeycomb sound absorbing structure is disclosed, which comprises a first panel, a second panel, and a core layer positioned between the first panel and the second panel. The firstpanel is a micro-slit plate and the core layer is a honeycomb core layer; the first panel, the second panel and the honeycomb core layer are brazed. The braze type micro-seam honeycomb sound absorbingstructure is arranged through the micro-seam plate and the core layer, the structural strength is improved, the sound absorbing effect is improved, and the use requirements of different environmentsare met.

Description

technical field [0001] The present disclosure relates to the technical field of sound absorption and noise reduction, in particular to a brazed micro-slit honeycomb sound absorption structure. Background technique [0002] At present, the existing sound-absorbing materials can be roughly divided into two categories, one is porous fiber-type sound-absorbing materials, and the other is resonant sound-absorbing materials. Porous fiber sound-absorbing materials generally have poor weather resistance, cannot adapt to harsh environments and affect life, and porous fiber sound-absorbing materials are harmful to human health. The existing resonant sound-absorbing materials are mainly perforated plates or micro-perforated plates. After the sound theory was widely used, Academician Ma Dayou proposed the theory of micro-slit sound-absorbing body. The sound-absorbing mechanism of micro-slit plate is similar to that of micro-perforated plate sound-absorbing body. They are all based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/162G10K11/168B32B15/20B32B15/04B32B7/12B32B7/08B32B3/26B32B3/12
CPCG10K11/162G10K11/168B32B3/12B32B3/266B32B7/08B32B7/12B32B15/04B32B15/20B32B2307/558B32B2307/306B32B2307/10
Inventor 王添樊泽臣王桂波王勃黄婉君
Owner 中国船舶重工集团公司第七一四研究所
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