Compound-type sound-absorbing wedge

A sound-absorbing sharp-split and composite technology, which is applied in building components, sound insulation, buildings, etc., can solve the problems of easy reflection of high-frequency sound waves, and achieve the effect of improving absorption performance, good absorption effect, and great practical significance in production.

Pending Publication Date: 2018-09-04
TIANJIN AEROSPACE RELIA TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a composite sound-absorbing wedge, which can make the metal sound-absorbing wedge not only have a better absorption effect on low-frequency sound waves, but also improve the absorption performance on high-frequency sound waves, effectively It solves the problem that high-frequency sound waves are easily reflected on the metal sound-absorbing wedge, improves the overall sound-absorbing effect of the sound-absorbing wedge, and is conducive to widespread application, which has great practical significance in production

Method used

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  • Compound-type sound-absorbing wedge
  • Compound-type sound-absorbing wedge
  • Compound-type sound-absorbing wedge

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] see Figure 1 to Figure 3 , the present invention provides a composite sound-absorbing wedge, comprising a plurality of wedge bodies 1 (not limited to figure 1 , figure 2 two shown), each of said wedge bodies 10 includes a base 1;

[0026] The front end of each said base 1 has a tip 2;

[0027] The rear ends of any two adjacent bases 1 are connected;

[0028] At least one sound-absorbing cotton board 3 is arranged on the sound-absorbing wedge.

[0029] In the present invention, in terms of implementation, the outer casing of each wedge body 10 is a perforated plate made of metal material (such as aluminum), for example, a galvanized metal perforated plate with a thickness of 0.8 mm.

[0030] It should be noted that for metal sou...

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Abstract

The invention discloses a compound-type sound-absorbing wedge. The compound-type sound-absorbing wedge comprises a plurality of transversely and parallelly arranged wedge main bodies (10), each wedgemain body (10) comprises a base part (1), and the front end of each base part (1) is provided with a tip part (2); the rear ends of any two adjacent base parts (1) are connected; the interior of a shell of each wedge main body (10) is filled with a sound-absorbing material; and the sound-absorbing wedge is provided with at least one sound-absorbing cotton plate (3). According to the disclosed compound-type sound-absorbing wedge, a metal sound-absorbing wedge can have the good absorbing effect to low-frequency sound waves, and the absorbing performance to high-frequency sound waves can be improved; and the problem, existing on the metal sound-absorbing wedge, that high-frequency sound waves are prone to reflecting is effectively solved, the whole sound-absorbing effect of the sound-absorbing wedge is improved, wide application and popularization are facilitated, and significant production practice significance is achieved.

Description

technical field [0001] The invention relates to the technical field of acoustic noise reduction, in particular to a composite sound-absorbing wedge. Background technique [0002] The sound-absorbing wedge is a special sound-absorbing structure used in the anechoic chamber, and its structure can usually be divided into two parts: the tip and the base. The sound-absorbing wedge has a structure that gradually increases from the top to the bottom, so that while satisfying a large sound-absorbing area, it also achieves a good match with the air impedance (that is, the principle of gradual transition), thereby satisfying the effective absorption of low-frequency sound waves . [0003] Generally speaking, when the sound-absorbing material appears at the peak position of the sound wave (that is, the quarter-wavelength position), the maximum absorption rate (≥0.99%) will appear. The acoustic characteristics of the sound-absorbing wedge are often expressed by the sound pressure refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/84
CPCE04B1/8404E04B2001/8419
Inventor 张伟彭力杨立伟
Owner TIANJIN AEROSPACE RELIA TECH
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