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Light low-frequency sound insulation device based on extension pipe resonant structure

A resonance structure and extension tube technology, which is applied in the direction of sound insulation, building components, building structures, etc., can solve the problems of large quality and poor sound insulation effect, and achieve the effect of light weight, improved sound insulation and small volume

Active Publication Date: 2017-12-26
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing sound insulation device has low frequency (50-400Hz) line spectrum noise, which has poor sound insulation effect and high quality. Acoustic device, the lightweight low-frequency sound insulation device is a sound insulation structure with multi-layer wall panels, which can effectively absorb and isolate low-frequency line spectrum noise

Method used

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  • Light low-frequency sound insulation device based on extension pipe resonant structure
  • Light low-frequency sound insulation device based on extension pipe resonant structure
  • Light low-frequency sound insulation device based on extension pipe resonant structure

Examples

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Embodiment 1

[0024] Such as figure 1 As shown, a lightweight low-frequency sound insulation device based on the resonance structure of an extension tube. In order to measure the sound insulation effect in the sound insulation room, the lightweight low-frequency sound insulation device is designed with a length of 1150mm and a width of 1100mm; within the range of 150-250Hz , The lightweight low-frequency sound insulation device includes: an outer wall panel 1, a resonant sound-absorbing array 2, a heat insulation sound insulation layer 3 and an interior trim panel 4; between the exterior wall panel 1 and the interior trim panel 4, the thermal insulation The sound insulation layer 3 is installed on the left side of the interior trim panel 4, the resonance sound absorption array 2 is embedded on the heat insulation sound insulation layer 3, and there is no space between the resonance sound absorption array 2 and the outer wall panel 1. Touch, and the distance is 33mm.

[0025] Such as image 3 A...

Embodiment 2

[0033] Such as figure 1 As shown, a lightweight low-frequency sound insulation device based on the resonant structure of an extension tube. In order to measure the sound insulation effect in a sound insulation room, the lightweight low-frequency sound insulation device is designed with a length of 1150mm and a width of 1100mm; within the range of 250-450Hz , The lightweight low-frequency sound insulation device includes: an outer wall panel 1, a resonance sound-absorbing array 2, a heat insulation sound insulation layer 3 and an interior trim panel 4; the outer wall panel 1 covers the interior trim panel 4, and the two Are not in contact with each other; between the outer wall panel 1 and the interior trim panel 4, the heat and sound insulation layer 3 is installed on the left side of the interior trim panel 4, and the resonance sound-absorbing array 2 is embedded in On the heat and sound insulation layer 3, the resonance sound absorbing array 2 and the outer wall plate 1 are no...

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Abstract

The invention provides a light low-frequency sound insulation device based on an extension pipe resonant structure. The light low-frequency sound insulation device is of a sound insulation structure provided with a plurality of layers of wall boards, and used for effectively absorbing and isolating low-frequency line spectrum noises. The light low-frequency sound insulation device comprises an outer wall plate (1), a resonant sound absorption array (2), a heat insulation and sound insulation layer (3) and an inner decoration board (4). The heat insulation and sound insulation layer (3), between the outer wall board (1) and the inner decoration board (4), is mounted on the inner decoration board (4), the resonant sound absorption array (2) is inlaid in the heat insulation and sound insulation layer (3), and the resonant sound absorption array (2) is spaced and not in contact with the outer wall board (1).

Description

Technical field [0001] The present invention relates to the field of sound insulation technology, in particular to a lightweight low-frequency sound insulation device based on an extension tube resonance structure. Background technique [0002] With the rapid development of industry, national defense, and technology, the impact of low-frequency line spectrum noise on the environment has attracted attention from all walks of life. Low-frequency line spectrum noise is widely present in the human living environment and various transportation vehicles, such as large-scale substations, helicopters, high-speed railways, ships, etc., which have a serious impact on people's daily life and travel. [0003] The existing common low-frequency (50-400Hz) sound insulation devices include outer wall panels, heat and sound insulation layers and interior trim panels. The thermal and sound insulation layer contains porous sound-absorbing materials, and in order to achieve better sound insulation ef...

Claims

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Application Information

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IPC IPC(8): E04B1/86E04B1/90
CPCE04B1/86E04B1/90E04B2001/8485
Inventor 常道庆刘碧龙李登科
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI