CN2466759Y

CN2466759Y - Silencing board

Info

Publication number: CN2466759Y
Application number: CN 01204301
Authority: CN
Inventors: 陈鸿烈
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-22
Filing date: 2001-02-22
Publication date: 2001-12-19
Anticipated expiration: 2011-02-22

Abstract

The utility model relates to a silencing board, which is formed by orderly gluing of a sound transmission panel, a silencing box body and an elastic silencing layer. The sound transmission panel is used for sound waves to penetrate through and to enter the silencing box body. The silencing box body is divided into a plurality of silencing chambers by crisscross partition pieces, making the sound waves entering the box body disperse energy through reflection and diffusion, and the sound waves through the reflection and diffusion can produce the action of mutually cancelling the energy due to the superposition of amplitudes in order to eliminate the sound waves. The elastic silencing layer can eliminate the remnant sound waves penetrating through the silencing box body.

Description

Acoustical panel

The utility model is a kind of acoustical panel, and it can be caught sound fully, and passes through repeatedly reflection, the diffusion of sound wave, makes the negative function of sound wave overlapping amplitude, to eliminate sound wave; In addition, absorb residual acoustic waves by foveate flexible resilient layer, and reach sound deadening.

As everyone knows, noise produces negative influence to all returning psychologically, mentally of people except that the ear-drum of meeting harm people.So the people who under noise, lives for a long time, on its physiology, all be subjected to serious injury psychologically.Follow the prosperity of science and technology, the plant equipment of all stereo sets, the vehicles, factory, the construction of building ground ... Deng, none does not produce noise, and the noise in many places is already to producing serious injury in wherein people.

The severe contamination of noise and noise have not allowed us to ignore to the injury fact of human body at present.In the now employed on the market product, there is employing to reach the product of insulating noise to stop mode to force sound reflection, as the soundproof wall of overpass both sides; The commodity of directly sound being eliminated with the flexible material of fiber-like are arranged, at indoor these type of commodity that use more.Because sound wave is running into when stopping, can the partial penetration restraining mass, part is reflected or diffraction.Wherein, the physical property except restraining mass can determine that the penetration capacity of sound wave, the frequency of sound wave also can determine its penetration capacity.The frequency low sound wave of healing, its ability that penetrates restraining mass is promptly strong, if only with the acoustical material noise reduction of flexibility, sound wave can't be absorbed fully.If use the sound insulation of reflection soundproof wall, can not be with wave absorption, and the acoustic wave segment behind reflection, diffraction can be overflowed by the height that is higher than soundproof wall.

The purpose of this utility model is to provide a kind of acoustical panel, and it can handle various sound waves of different frequencies simultaneously, and can adapt to indoor, outdoor varying environment, and takes sound-absorbing mode completely, sound wave is absorbed fully, to reach the purpose of noise reduction.

The purpose of this utility model is achieved in that a kind of acoustical panel, it is characterized in that: it is to be bonded mutually by sound permeable surface plate and noise reduction casing, be separated into the anechoic chamber of some quantity on this noise reduction casing with crisscross partition, the upper end of this each anechoic chamber is the opening shape.

This sound permeable surface plate is the hard panel of the aperture that gathers.This sound permeable surface plate can be the preferable adhesive-bonded fabric structure of air permeability.Each anechoic chamber on this sound reducing enclosure is the single degree of depth.Each anechoic chamber on this noise reduction casing is the setting of different depth.The rear end of this noise reduction casing is sticking establishes elasticity noise reduction layer, is densely covered with many holes in this elasticity noise reduction layer.

Major advantage of the present utility model is that each anechoic chamber on wherein the noise reduction casing can be with high-frequency wave absorption; Elasticity noise reduction layer can will penetrate the low-frequency sound wave of noise reduction casing and eliminate, and has the effect of thoroughly sound wave being eliminated.

Further specify below in conjunction with preferred embodiment and accompanying drawing.

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a decomposing schematic representation of the present utility model.

Fig. 3 is a combination diagrammatic cross-section of the present utility model.

Fig. 4 is the local enlarged diagram of Fig. 3.

The schematic perspective view of the utility model embodiment 2 that Fig. 5 is.

Embodiment 1

Consult Fig. 1-Fig. 4, the acoustical panel 10 that the utility model disclosed is to be bonded mutually successively by a sound permeable surface plate 11, a noise reduction casing 12 and an elasticity noise reduction layer 13.Sound permeable surface plate 11 is mainly penetrating and is entering in the noise reduction casing 12 for sound wave.Be separated into the anechoic chamber 15 of some quantity on the noise reduction casing 12 with crisscross partition 14, the upper end of this each anechoic chamber 15 is the opening shape.This elasticity noise reduction layer 13 is for having the elastic construction of some holes 16.

Above-mentioned sound permeable surface plate 11 mainly can make sound wave enter in each anechoic chamber 15 of this noise reduction casing 12.If this acoustical panel 10 is when being set up in outdoor application, this sound permeable surface plate 11 can the time the gather hard panel of many apertures 17.When if this acoustical panel 10 is located at indoor use, this sound permeable surface plate 11 also can be the preferable non-woven cloth layer of gas penetration potential (not shown on the figure) except the hard panel that can be many apertures 17 that gather.

Enter sound wave in each anechoic chamber 15 on this noise reduction casing 12, under reflex repeatedly, and energy dispersive, and make each reflection wave produce the effect of the overlapping amplitude of sound wave, then the energy of sound wave can be cancelled, and reaches the effect of noise reduction.Wherein, the degree of depth of anechoic chamber 15 can be arranged between the 1-5 centimetre, if the degree of depth of anechoic chamber 15 is darker, to the sound effect of eliminating high-decibel better, if the degree of depth of anechoic chamber 15 is more shallow, the sound effect that helps eliminating low decibel better, spatial volume is fried in shallow oil little, then sound wave diffusion number of times within it the more, and each reflection wave after diffusion to produce the probability that resonance offsets each other just higher, then noise reduction.Each anechoic chamber 15 on this noise reduction casing 12 can be the unified single degree of depth, also can be the different random degree of depth, and during actual the use, the sound conditions in visual noise reduction place is selected to use.

Above-mentioned elasticity noise reduction layer 13 is elastic constructions, is densely covered with many holes 16 on it, and when sound wave was shuttled back and forth in hole 16, its energy was absorbed by this elasticity noise reduction layer 13.Entering elasticity noise reduction layer 13 sound wave is the low-frequency sound wave that penetrates noise reduction casing 12, its when penetrating this elasticity noise reduction layer 13, in the hole 16 of inside, do repeatedly collision after, change frequency and weaken energy, and, reach noise reduction the wave absorption of remnants.This elasticity noise reduction layer 13 can be the rubber grain through extrusion modling, then can form space 16 by nature between each rubber grain.

Particular design of the present utility model is a noise reduction casing 12, and the sound wave after it makes sound wave through reflection and diffusion overlaps the energy offset effect of amplitude, and its erasure effect is splendid.

Embodiment 2

Consult Fig. 5, in the present embodiment, in the field of employment of no low-frequency sound wave, its acoustical panel 10 ' can have only noise reduction panel 11 and noise reduction casing 12 to be bonded, and saves elasticity noise reduction layer 13 wherein.

In sum, noise reduction casing 12 of the present utility model can be included sound wave in fully, and high frequency sound wave is wherein eliminated fully; The elasticity noise reduction layer 13 that is positioned at these noise reduction casing 12 rears can absorb the low-frequency sound wave of remnants, reaches the effect of thorough sound-absorbing, makes a kind of desirable innovative design.

Claims

1, a kind of acoustical panel is characterized in that: it is to be bonded mutually by sound permeable surface plate and noise reduction casing, is separated into the anechoic chamber of some quantity on this noise reduction casing with crisscross partition, and the upper end of this each anechoic chamber is the opening shape.

2, as the described acoustical panel of claim I, it is characterized in that: this sound permeable surface plate is the hard panel of the aperture that gathers.

3, as the described acoustical panel of claim I, it is characterized in that: this sound permeable surface plate can be the preferable adhesive-bonded fabric structure of air permeability.

4, as the described acoustical panel of claim I, it is characterized in that: each anechoic chamber on this noise reduction casing is the single degree of depth.

5, as the described acoustical panel of claim I, it is characterized in that: each anechoic chamber on this noise reduction casing is the setting of different depth.

6, acoustical panel as claimed in claim 1 is characterized in that: the rear end of this noise reduction casing is sticking establishes elasticity noise reduction layer, is densely covered with many holes in this elasticity noise reduction layer.