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Sound absorber and sound barrier with the same

A sound-absorbing body and sound-absorbing technology, which is applied in the field of sound barriers and sound-absorbing bodies, can solve problems such as increased noise, increased vibration speed of air particles, and poor sound absorption effect, and achieves improved working life and simple structure , good sound absorption effect

Inactive Publication Date: 2017-06-16
BEIJING ZHIYI PUDAO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it has been found through research that the sound absorption effect of such a sound absorbing body and sound barrier is not very good. The reason is that when the sound wave reaches the sound barrier, it will be diffracted at the top of the barrier (see figure 1 ), which in turn causes the increase of the vibration velocity of the air particles in this part, which increases the noise passing through the top

Method used

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  • Sound absorber and sound barrier with the same
  • Sound absorber and sound barrier with the same
  • Sound absorber and sound barrier with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] refer to figure 2 , the sound absorbing body according to the present invention includes a main sound absorbing module 100 and an auxiliary sound absorbing module 200 arranged on the top of the main sound absorbing module. The auxiliary sound-absorbing module 200 is fixed on the main sound-absorbing module 100 by means of screws, welding, clamping and the like.

[0045] see image 3 , 4. The main sound-absorbing module 100 includes a panel 1 , a frame 2 and a first sound-absorbing material 3 , the first sound-absorbing material 3 is set in the frame 2 , and the panel 1 is installed on both sides of the frame 2 . In a preferred solution, there is a certain distance between the first sound absorbing material 3 and at least one of the front and rear panels 1 . In another preferred solution, the distance exists only on the side facing the sound source. Wherein said distance is 1-10cm.

[0046] There are a plurality of through holes 4 for sound waves and air particles t...

Embodiment 2

[0069] see Figure 5, the panel of the main sound-absorbing module of the present invention can be made into a ring, and the front and back of the ring form the panel in Embodiment 1. These two parts are perforated structures, and the hole structure is the same as in Embodiment 1. There may or may not be through holes on the top and bottom of the annular structure, and the first sound-absorbing material 3 is inserted into it from the side, so that the frame structure can be omitted, and of course the frame structure can also be used to increase the supporting effect. In another alternative solution, the panel 1 can be made into an inverted U-shaped structure, and the two side walls of the U-shaped structure form the front panel and the rear panel of the sound absorber, which will not be repeated here. The bottom of the U-shaped structure constitutes the upper part of the sound absorbing body, and likewise, it may be a non-perforated structure or a non-perforated structure.

...

Embodiment 3

[0072] The structure of the sound absorbing body and the sound barrier of Embodiment 3 is basically the same as that of the previous embodiment, the main difference is that the shape structure of the sound absorbing body is not a rectangular structure, but a trapezoidal structure, or an irregular structure, such as a wavy section of the panel, a broken line shape or arc.

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Abstract

The invention discloses a sound absorber and a sound barrier with the same. The sound absorber comprises a body sound absorbing module, and the body sound absorbing module comprises panels and a first sound absorbing material; the sound absorber is characterized by also comprising an auxiliary sound absorbing module arranged at the top of the body sound absorbing module, and the auxiliary sound absorbing module comprises an outer frame and a second sound absorbing material arranged in the outer frame; the panels are arranged on the two sides of the first sound absorbing material, a plurality of through holes for airflow passing are formed in the panels and the outer frame, and the air flow-through performance at different positions of the first sound absorbing material is different; the specific implementation mode is that from the lower portion of the sound absorber to the upper portion of the sound absorber, the flow resistance and / or the surface density of the first sound absorbing material are / is gradually decreased.

Description

technical field [0001] The invention relates to a sound-absorbing body and a sound barrier using the sound-absorbing body used indoors or outdoors, in particular to a sound-absorbing body and a sound barrier used on both sides of road and rail traffic. Background technique [0002] Road and rail traffic noise has seriously interfered with the normal work and life of business people and residents in commercial buildings on both sides of the line and in residential quarters, affecting the office environment of commercial buildings and the quality of daily life of residents. Therefore, the noise of road and rail traffic Treatment technology is an application technology that relevant companies pay close attention to and strive to develop. One of the effective ways to control road and rail traffic noise is to install sound insulation barriers on both sides of the line. In recent years, various sound insulation barriers have appeared, which play a role in reducing noise To a certa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F8/00
CPCE01F8/00E01F8/0005
Inventor 侯建鑫李玉路
Owner BEIJING ZHIYI PUDAO TECH CO LTD
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