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Air-out noise reducer and system

A wind reduction and noise reduction technology, applied in cooling/ventilation/heating transformation, electrical components, electrical equipment shells/cabinets/drawers, etc., can solve the problem of short anechoic passages, affecting cabinet heat dissipation, and sound power level noise reduction effects Inconspicuous and other problems, to achieve the effect of reducing equipment noise and extending the structure of the air duct

Inactive Publication Date: 2011-09-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the second prior art, the air flow enters the cabinet from both sides of the noise-absorbing structural member 220, which reduces the air volume in the middle slot and becomes a heat dissipation bottleneck, affecting the heat dissipation of the cabinet.
In addition, the anechoic channel in the second prior art is relatively short, and the sound power level noise reduction effect is not obvious

Method used

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  • Air-out noise reducer and system
  • Air-out noise reducer and system
  • Air-out noise reducer and system

Examples

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Embodiment Construction

[0028] Please also refer to image 3 , Figure 4 , the air outlet noise reduction device 300 of the embodiment of the present invention is hollow inside, and the air outlet noise reduction device 300 includes a top wall 310 , a first side wall 330 and a second side wall 320 . The wind noise reduction device 300 has an inner layer and an outer layer. The top wall 310 includes a top wall inner wall 311 and a top wall outer wall 312 . The first side wall 330 includes a first side wall inner wall 331 and a first side wall outer wall 332 ; the second side wall 320 includes a second side wall inner wall 321 and a second side wall outer wall 322 . It can be understood that the inner layer of the wind outlet noise reduction device 300 is surrounded by the inner wall 311 of the top wall, the inner wall 331 of the first side wall and the inner wall 321 of the second side wall; , The outer wall 332 of the first side wall and the outer wall 322 of the second side wall are surrounded an...

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PUM

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Abstract

The embodiment of the invention provides an air-output noise-reduction device and a system thereof. The air-output noise-reduction device has an inner layer and an outer layer, wherein, the outer layer is formed by the surrounding the outer side wall of a top wall, the outer side wall of a first outer side wall and the outer side wall of a second outer side wall; and the inner side of the outer layer is adhibited with a sound-absorbing structure. The inner side wall of the top wall and the outer side wall of the top wall are arranged in a sandwich way to form a first air-output channel with two run-through ends and in a reversed U-shape. The outer side wall of the second side wall is provided with a first air opening, and the inner side wall of the second side wall is provided with a second air opening and a third air opening. A first air-inlet channel is formed between the first air opening and the second air opening, a second air-inlet channel is formed between the first air openingand the third air opening, and an air-inlet path with upside and downside diffluence is formed between the first air-inlet channel and the second air-inlet channel. In the embodiment, the air-inlet channel with upside and downside diffluence, the reversed U-shaped air channel and other air channels are adopted, under the premise of effective ventilation, the structure of the air channel is extended and the noise of equipment is lowered.

Description

technical field [0001] The invention relates to a wind noise reduction device and system, in particular to a wind noise reduction device and system for a communication cabinet. Background technique [0002] With the rapid development of communication cabinet manufacturing technology, people have higher and higher noise requirements for cabinets. Due to its high integration and compact structure, the communication equipment inside the cabinet often brings high noise when using air cooling for heat dissipation. [0003] Such as Figure 1A and Figure 1B The shown prior art 1 uses the same sound-absorbing structure 120 at the position of the air inlet and outlet of the side wall 110 of the cabinet as the openings of the air inlet and outlet. However, the opening process of the sound-absorbing structure of the prior art 1 is inconvenient and costly, and the noise-reducing performance of the sound-absorbing structure after opening is reduced, and the noise-reducing effect of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K7/20H05K5/00
Inventor 林辉胡卫峰魏华春李海鹏王飞
Owner HUAWEI TECH CO LTD