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Composite sound absorption assembly with enhanced low-frequency absorption

A sound absorption and component technology, applied in building components, buildings, sound insulation, etc., can solve problems such as increasing thickness and size

Active Publication Date: 2021-12-10
广州新静界声学科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a composite sound-absorbing component with enhanced low-frequency absorption, aiming at solving the problem that the thickness of the composite sound-absorbing component needs to be increased in order to achieve low-frequency noise absorption size problem

Method used

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  • Composite sound absorption assembly with enhanced low-frequency absorption
  • Composite sound absorption assembly with enhanced low-frequency absorption
  • Composite sound absorption assembly with enhanced low-frequency absorption

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Embodiment Construction

[0045] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0046] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "the", "above" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used...

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Abstract

The invention discloses a composite sound absorption assembly with enhanced low-frequency absorption. A back plate seals an opening in the back face of a frame, the surface density of the back plate ranges from 1 kg / m <2> to 3 kg / m <2>, the surface density of a sound absorption panel ranges from 2 kg / m <2> to 4 kg / m <2>, and the perforation rate of a batten layer ranges from 3% to 6%; According to the composite sound absorption assembly with enhanced low-frequency absorption, targeted treatment is carried out on medium-frequency noise, high-frequency noise and low-frequency noise, and particularly, composite reinforcement design is carried out on low-frequency noise absorption. Noise in the middle-frequency part and the high-frequency part is mainly made of sound-absorbing material filling layers, and noise in the low-frequency part is mainly characterized in that the punching rate of a batten layer is reduced, the width of a batten surface layer is increased, the back plate with proper surface density is additionally arranged, and the surface density of a sound-absorbing panel is adjusted.

Description

technical field [0001] The invention relates to the field of sound-absorbing structures, in particular to a composite sound-absorbing component with enhanced low-frequency absorption. Background technique [0002] The sound-absorbing component includes a sound-absorbing panel layer, a frame, and a sound-absorbing material filling layer. The sound-absorbing panel layer is fixed on the frame, and the sound-absorbing material filling layer is sealed in the frame by glass fiber cloth. [0003] In the application of sound-absorbing components, the increase in the thickness of the sound-absorbing material filling layer has the characteristics of a logarithmic curve for the improvement of the absorption effect of noise at each frequency, that is, after the thickness of the sound-absorbing material filling layer exceeds a certain value, continue to increase the thickness of the noise absorption effect In practical applications, the main purpose of increasing the thickness of the so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/86E04B1/84
CPCE04B1/86E04B1/8409E04B2001/8461
Inventor 不公告发明人
Owner 广州新静界声学科技股份有限公司