CN2432275Y - Environmental protection high efficient sound absorber - Google Patents
Environmental protection high efficient sound absorber Download PDFInfo
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- CN2432275Y CN2432275Y CN 00209737 CN00209737U CN2432275Y CN 2432275 Y CN2432275 Y CN 2432275Y CN 00209737 CN00209737 CN 00209737 CN 00209737 U CN00209737 U CN 00209737U CN 2432275 Y CN2432275 Y CN 2432275Y
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- sound
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- sound absorption
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Abstract
The utility model relates to an environmental protection high efficient sound absorber which belongs to the technical field of noise control of city environment and particularly belongs to the technical field of noise control of clean environment and super-static environment. The utility model is composed of a sound-absorbing material (1) with gradual-changing density, an ultrathin metal film (2) and a perforated metal (3) according to the communication theory of sound waves. The utility model has the characteristics of high sound-absorbing efficiency, no secondary pollution, waterproof effect, no deformation, dustproof effect, beautiful appearance, convenient installation, etc. The utility model is suitable for clean places or quiet environment of people centralization of food processing, medical care, precision equipment, recreation, sports stadiums, large-sized workshops, etc.
Description
The utility model belongs to urban environment noise control technology field, particularly clean and noise control technique field, super stationary ring border.
The existing porous absorption material of China is all based on mineral fibers, and outer wrapping fiber cloth under the state at random supports with skeleton, steel plate, installs mask additional and forms.This sound absorber has following drawback:
1, is afraid of humidity.After making moist, this material sound absorbing capabilities will descend significantly.
2, the used fiber of this material very easily fractures, is scattered, and swims in the space, causes second environmental pollution.The operation construction is carried out under highly polluted environment.
3, because of the influence of gravity, easily slump, distortion cause density unevenness, have seriously reduced sound absorbing capabilities.
Even 4 have looser block structure, fix because of its density, influence acoustically effective.Such sound absorber average sound absorption coefficient is about 0.6.
The purpose of this utility model provides a kind of environment-friendly highly efficient sound absorber, and this product has non-secondary pollution, waterproof, indeformable, dustproof, good looking appearance, characteristics such as easy for installation.Particularly sound absorbing capabilities is superior, and average sound absorption coefficient is up to α＞0.8 (seeing sound absorption spectrum curve shown in Figure 3).
This sound absorber such as is suitable between food processing, medical treatment, precision equipment, entertainment, stadiums and large car at clean place or the super stationary ring border that personnel concentrate.
This sound absorber is according to theory of sound propagation, is combined into the seriation sound absorber by mask orifice plate and sound absorption material.Its sound sucting band characteristic and acoustically effective are by the technical data decision of perforated plate, sound absorbing membrane and sound absorption material.
The structure of environment-friendly highly efficient sound absorber as shown in Figure 1, it mainly is made up of sound absorption material (1), ultrathin metallic film (2) and perforated metal (3).Sound absorption material has solid shape, adopt glass asphalt, colloid and multi mineral material at high temperature to form superfine fibre, again according to needed different sound absorption frequencies, form with different graded density accumulations, formation has the sound absorption material of graded density and solid shape, this sound absorption material has good acoustically effective, and not frangibility, be scattered, avoided environment pollution.Be covered with the ultrathin metallic film of thickness in sound absorption material outside, sound absorption material is wrapped in wherein, make sound absorber have advantages such as indeformable, pollution-free, waterproof and dustproof less than 0.1mm.Outside at ultrathin metallic film also is covered with the chromatic metallic perforated panel, parameters such as the thickness of slab of perforated plate, piercing aperture, density of such perforation are according to the sound source characteristic specialized designs or select for use, the shape of metal decking, size, color need be determined by environment, make sound absorber both have good sound absorbing capabilities, have good decoration effect again.Can be installed in indoor and outdoor wall surface or space, leave suitable space at the sound absorber back side in case of necessity, to adjust sound absorption characteristics.
Description of drawings: Fig. 1 is an environment-friendly highly efficient sound absorber structural representation; Fig. 2 is an A-A section sectional view.Among the figure: 1-sound absorption material, 2-ultrathin metallic film, 3-perforated metal; Fig. 3 is sound absorption spectrum curve figure.
Embodiment.Sound source characteristic according to noise of motor is a broadband, and the sound absorption material thickness of selection is 100mm, and specification is 500mm * 500mm * 100mm (length * wide * height), and graded density is 20-30Kg/m
3, material is the superfine glass cotton fiber, and with the external application of 0.06mm thick aluminum foil, outermost layer is covered with the aluminium alloys perforated metal, and thickness of slab is that 0.8mm, aperture are that 3mm, perforated percentage are 25%, with diamond array, is installed in surface of wall.It is very convenient to adopt this kind sound absorber to install, and keel, sound absorption material all do not leak outside.Its sound absorbing capabilities as among the sound absorption coefficient spectrum curve figure series 4 shown in, average sound absorption coefficient α＞0.8.This kind sound absorber not only has good acoustically effective, and has non-secondary pollution, waterproof, indeformable, dustproof, good looking appearance, advantage such as easy for installation, produces a desired effect.
Claims (2)
1. environment-friendly highly efficient sound absorber, constitute by sound absorption material (1), it is characterized in that the outside of this sound absorber sound absorption material (1) is coated has a ultrathin metallic film (2), the outside of ultrathin metallic film (2) is covered with perforated metal (3), perforated metal can be made colored, and decide according to sound source characteristic in its thickness of slab, density of such perforation, aperture etc.
2. according to the described environment-friendly highly efficient sound absorber of claim 1, it is characterized in that sound absorption material (1) adopts glass asphalt, colloid and multi mineral material at high temperature to form superfine fibre, according to the characteristic and the requirement of difference sound absorption frequency, adopt different graded densities to pile up and form again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00209737 CN2432275Y (en) | 2000-04-21 | 2000-04-21 | Environmental protection high efficient sound absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00209737 CN2432275Y (en) | 2000-04-21 | 2000-04-21 | Environmental protection high efficient sound absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2432275Y true CN2432275Y (en) | 2001-05-30 |
Family
ID=33576782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00209737 Expired - Fee Related CN2432275Y (en) | 2000-04-21 | 2000-04-21 | Environmental protection high efficient sound absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2432275Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114657A (en) * | 2013-02-06 | 2013-05-22 | 顾康 | Glass fiber acoustical board |
| CN111636761A (en) * | 2020-06-10 | 2020-09-08 | 湖南大学 | Construction site sound arrester |
| CN112983897A (en) * | 2021-03-25 | 2021-06-18 | 成都新仪征环保科技有限公司 | Integrated sound insulation cover and air inlet silencer |
-
2000
- 2000-04-21 CN CN 00209737 patent/CN2432275Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114657A (en) * | 2013-02-06 | 2013-05-22 | 顾康 | Glass fiber acoustical board |
| CN111636761A (en) * | 2020-06-10 | 2020-09-08 | 湖南大学 | Construction site sound arrester |
| CN112983897A (en) * | 2021-03-25 | 2021-06-18 | 成都新仪征环保科技有限公司 | Integrated sound insulation cover and air inlet silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |