Air-out noise abatement system for soundproof room

A technology of silent room and muffler, which is applied in the direction of sound insulation, indoor acoustics, noise suppression, etc. It can solve the problems of high installation cost, small ventilation and small size of silent room, etc., and achieve low production cost, large noise reduction, The effect of easy installation

Active Publication Date: 2017-03-29
XIAMEN JIADA OF ACOUSTIC TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the small size of the quiet room, there are generally 1 to 2 testing operators, the ventilation volume is small, the conventionally installed muffler is large in size, and the installation cost is high, which is difficult to meet the actual needs of the small quiet room

Method used

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  • Air-out noise abatement system for soundproof room
  • Air-out noise abatement system for soundproof room
  • Air-out noise abatement system for soundproof room

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Embodiment Construction

[0038] Such as figure 1 , 2 . As shown in 3, a kind of air outlet noise reduction system for a quiet room, including a centrifugal fan (1), an impedance composite muffler, a noise elimination channel (2), and a perforated sound-absorbing panel (3), the impedance composite muffler is composed of a muffler Housing (4), centrifugal fan interface (5) mounting part, mounting flange (6), internal sound-absorbing material (7) and high-density sound-absorbing inserts (8) with a thickness of 10mm and a spacing of 15-25mm, The impedance compound muffler is installed on the top side of the silent room; the muffler channel (2) is set inside the silent room, and consists of a sound insulation board (9) and a perforated sound absorption board (3). The surface forms an included angle of 40°, and the sound insulation board (9) is equipped with a low-density sound-absorbing board (10) and the top of one side in the quiet room to form a cross-sectional area of ​​a right-angled triangle wind-ou...

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PUM

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Abstract

The invention discloses an air-out noise abatement system for a soundproof room comprising a centrifugal fan, an impedance composite muffler, a noise abatement channel, and perforated sound absorption boards. The impedance composite muffler comprises a muffler housing, a centrifugal fan interface mounting part, mounting flanges, inner sound absorption material and high density noise abatement insert sheets with the thickness of 10mm and spacing interval of from 15 to 25mm. the impedance composite muffler is installed at one side of the top of the soundproof room; the noise abatement channel is installed inside the soundproof room and is formed by a sound insulating board and a perforating acoustic board, wherein a 40 DEG included angle is formed between the sound insulating board and a vertical surface of the soundproof board; the sound insulating board is provided with low density sound absorption material therein and an air-out soundproofing channel having a triangle cross sectional area is formed by the sound insulating board and the top of one side of the soundproof room. The system has small volume, and is low in manufacture cost and convenient for mounting; the noise abatement amount is large, which achieves full range and high noise abatement amount. the noise abatement amount of the air-out noise abatement system of a soundproof room is equal to that of an anechoic room.

Description

technical field [0001] The invention relates to a noise control technology, in particular to an air outlet noise reduction system for a silent room. Background technique [0002] The silent room (acoustic testing room) is a sound insulation test device designed for the product manufacturing workshop with testing requirements. The sound absorption treatment is carried out in the quiet room to make it a small anechoic room, and some small Products, such as motors, audio, transformers, etc. [0003] Since the operators need to carry out related tests in the quiet room, the inspectors working in the quiet room should ensure their working conditions. According to 6.6.1 of the Basic Hygienic Requirements for Workplaces in Chapter 6 of "Hygienic Standards for Industrial Enterprise Design" GBZ 1-2010, the fresh air in the workplace should come from the outside, the fresh air outlet should be set in the air clean area, and the fresh air volume should meet the following requirements:...

Claims

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Application Information

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IPC IPC(8): E04H5/02E04B1/86E04B1/99F24F13/24
Inventor 何鹭凤蔡伟强林嘉祥林秋生
Owner XIAMEN JIADA OF ACOUSTIC TECH CO LTD
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