CN2931615Y - Fire retardant insulating composite sound-absorption device - Google Patents
Fire retardant insulating composite sound-absorption device Download PDFInfo
- Publication number
- CN2931615Y CN2931615Y CN 200620040673 CN200620040673U CN2931615Y CN 2931615 Y CN2931615 Y CN 2931615Y CN 200620040673 CN200620040673 CN 200620040673 CN 200620040673 U CN200620040673 U CN 200620040673U CN 2931615 Y CN2931615 Y CN 2931615Y
- Authority
- CN
- China
- Prior art keywords
- sound absorption
- flame
- fire retardant
- retardant insulating
- proof
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Building Environments (AREA)
Abstract
The utility model relates to a sound absorption apparatus of flame-proof insulating composite structure. The utility model is based on leading perforated board resonance sound absorption structure theory in domestic, carries out design and development aiming at the sound absorption structure installed on building walls, and provides a novel composite structure of the flame-proof insulating sound absorption board and the resonance sound absorption cavity to solve shortcomings in existent sound absorption structure such as low sound absorption coefficient and bad flame-proof and insulation performance. Compared with existent techniques, the flame-proof insulating composite sound absorption apparatus of the utility model has the advantages of high sound absorption coefficient, flame-proof, insulation, low temperature rise, no secondary pollution, no dust settling, beautiful and grace shape.
Description
Technical field
The utility model relates to a kind of sound absorber of flame-retardant composite structure insulation.
Background technology
Sound absorption is the phenomenon that sound wave strikes energy loss behind the material surface, and sound absorption can reduce indoor sound pressure level.In the prior art, adopt centrifugally glass-wool to make wallboard, ceiling, suspended absorber etc. usually, absorb the acoustic energy in the room, reduce the reverberation time, reduce room noise as sound absorption material.But because centrifugally glass-wool surface no decoration, and it is unrestrained to have fiber, therefore must make the hidden use of various sound absorbing members.The structure of normal use be the furred ceiling of perforated paper surface gypsum board or make in fill out the perforated plate metope of centrifugally glass-wool.Also have perforated metal (as aluminium sheet), perforation plank, perforation mineral wool board etc. with the similar panel of perforated paper surface gypsum board.But materials such as centrifugally glass-wool, gypsum plank, metal sheet, plank, mineral wool board have the accumulation of heat effect, easily cause high temperature rise, and mechanical strength low (metallic plate outer), the no fire-retardant and function that insulate.Above-mentioned sound absorption material and sound absorption mechanism are unsuitable for using in the occasion that machinery, electric fixtures are concentrated, and safety is lower, and sound absorption coefficient generally is lower than 0.6.The method that indoor subsides acoustical tile is also arranged in addition, but acoustically effective is not remarkable, and existence is kept a public place clean and the caducous problem of brick wall.
Moreover when selecting sound absorption material and sound absorption construction, its frequency spectrum should mate with the spectral characteristic of noise source.High-frequency noise is big with many material or the structures of high frequency sound absorption, and low-frequency noise is big with low frequency absorption many material or structure.In the prior art, there is the situation of peak value in noise in medium-high frequency, its acoustically effective is better, but general centering, low frequency noise acoustically effective are undesirable.
Summary of the invention
The purpose of this utility model is exactly to overcome the above-mentioned various defectives that existing sound absorption material in use exists, and a kind of fire retardant insulating type composite sound absorbing device is provided.
The utility model is based at present domestic relatively leading perforation board resonance sound absorption structure theory, what the sound absorption construction of installing at the building wall was carried out designs and develops, for solving the insulate composite construction of acoustical board and resonance sound-absorbing cavity of existing sound absorption construction a kind of novel flame-retardant that deficiency such as low, fire-retardant and insulating properties difference provides at sound absorption coefficient.
Fire retardant insulating type composite sound absorbing device described in the utility model, this device is to be installed in by the fire retardant insulating acoustical board to be fixed on the lightgage steel joist that cavity is arranged on the flat surface, and reinforce with color steel or color aluminium layering, gross thickness is at 50mm-150mm, and wherein acoustic absorption nonwoven fabrics is bonding forms by flame-proof insulating epoxy porous plate and fire prevention for the fire retardant insulating acoustical board.
Described fire retardant insulating acoustical board thickness is between 0.5mm-3mm, and wherein the flame-proof insulating epoxy porous plate preferably adopts the perforated percentage of 10%-25%, and the aperture is at 1mm-10mm.The flame-proof insulating epoxy porous plate is specially offered by relevant supplier by technical requirements of the present utility model with the fire prevention acoustic absorption nonwoven fabrics.
Sound absorption principle of the present utility model is based on Helmholtz's effect.Cavity is equivalent to a Helmholtz resonator behind perforated plate, the plate, can be regarded as a resonator system of being made up of quality and spring.When the resonance frequency of incident sound wave frequency and system was consistent, the air of perforated plate neck produced fierce friction, has strengthened sink effect, has formed absworption peak, and acoustic energy is significantly decayed.If paste the sound absorption film again in the perforated plate back, increase acoustic resistance, can widen the width of sound sucting band.The key parameter that influences the utility model reduction, absorption noise is air layer thickness behind the thickness of fire retardant insulating acoustical board, the plate, aperture and perforated percentage.At the noise source of different frequency peak value, can select best parameter proportioning, to reach the purpose of effective reduction noise.
The beneficial effects of the utility model: fire retardant insulating type composite sound absorbing device described in the utility model compared with prior art, sound absorption coefficient height, and fire-retardant, insulation, temperature rise are little, non-secondary pollution, be difficult for laying dust, good looking appearance is generous.
Description of drawings
Fig. 1 is a described fire retardant insulating type composite sound absorbing device structural representation of the present utility model.
Fig. 2 is the structure enlarged drawing of fire retardant insulating type composite sound absorbing device 1.
The specific embodiment
As depicted in figs. 1 and 2, fire retardant insulating type composite sound absorbing device described in the utility model, be installed in by fire retardant insulating acoustical board 1 and be fixed on the lightgage steel joist 2 that cavity is arranged on the flat surface, and reinforce with color steel or color aluminium layering, gross thickness is at 50mm-150mm, and wherein fire retardant insulating acoustical board 1 is by flame-proof insulating epoxy porous plate 4 and 5 bonding compositions of fire prevention acoustic absorption nonwoven fabrics.
During use, will there be the lightgage steel joist of cavity to be installed on the flat surface 3 of building.
Below be a preferred embodiment of the present utility model, be applicable to the processing that absorbs sound of the place of noise source frequency peak about 200Hz, as electric control appliance place (transformer room, reactor chamber etc.).This occasion belongs to the low frequency noise characteristic, and the sound absorption intractability is higher, and the sound absorption coefficient of conventional art generally can only reach 0.5-0.6.In the example, fire retardant insulating acoustical board 1 thickness adopts 1mm, and wherein flame-proof insulating epoxy porous plate 4 thickness adopt 0.8mm, and perforated percentage adopts 17.8%, and the aperture is 2.8mm, and flame-proof insulating epoxy porous plate 4 is equilateral triangle cloth hole; Fire prevention acoustic absorption nonwoven fabrics 5 thickness adopt 0.2mm, and unit weight adopts 61g/m
2Resonance sound-absorbing cavity 2 thickness adopt 75mm.This example detects (detecting foundation: GBJ47-86 " Code for measurement of sound absorbing coefficient in reverberation room ") through the acoustical behavior that Shanghai Construction Science Research Inst.'s measuring station carries out sound absorption construction, testing result:
Reverberation room method sound absorption coefficient (table 1)
| Testing result | Centre frequency (HZ) | 100 | ?125 | ?160 | ?200 | ?250 | ?315 | ?400 | ?500 | ?630 | ?800 |
| Sound absorption coefficient | 0.20 | ?0.25 | ?0.55 | ?0.75 | ?0.65 | ?0.70 | ?0.60 | ?0.90 | ?0.85 | ?0.85 | |
| Centre frequency (HZ) | 1000 | ?1250 | ?1600 | ?2000 | ?2500 | ?3150 | ?4000 | ?5000 | ?6300 | ?8000 | |
| Sound absorption coefficient | 0.75 | ?0.75 | ?0.65 | ?0.50 | ?0.50 | ?0.55 | ?0.45 | ?0.45 | ?0.35 | ?0.25 | |
| Detect conclusion | Average sound absorption coefficient (100-5000): 0.60 | Noise reduction coefficient NRC:0.70 | |||||||||
As can be seen from Table 1, this example has sound absorption preferably for the noise source of frequency peak 200Hz, sound absorption coefficient 〉=0.7; Simultaneously the medium-high frequency noise in the 500Hz-1250Hz scope also there is good sound absorption, also is applicable to this type of noise source occasion.In addition, this example device has been carried out the thermal property test of sound absorption construction through Shanghai Construction Science Research Inst.'s measuring station.Under the process of the test simulation summer climate condition, because of the power-equipment heating causes interior temperature rising operating mode.Because experimental rig is not done to ventilate and is handled, so test conditions is more harsh than the actual motion condition.After comparative test result showed that experimental rig is installed this sound-absorption structural body, the internal temperature that sound absorption construction is not installed raise and is no more than 1.5 ℃.Therefore, the utility model is less to the influence of indoor temperature rise, can eliminate slight temperature rise by suitable increase draught area.
Claims (3)
1, a kind of fire retardant insulating type composite sound absorbing device, this device is to be installed in by the fire retardant insulating acoustical board to be fixed on the lightgage steel joist that cavity is arranged on the flat surface, and reinforce with color steel or color aluminium layering, gross thickness is at 50mm-150mm, and wherein acoustic absorption nonwoven fabrics is bonding forms by flame-proof insulating epoxy porous plate and fire prevention for the fire retardant insulating acoustical board.
2, fire retardant insulating type composite sound absorbing device as claimed in claim 1, it is characterized in that: fire retardant insulating acoustical board thickness is between 0.5mm-3mm.
3, fire retardant insulating type composite sound absorbing device as claimed in claim 1 is characterized in that: the flame-proof insulating epoxy porous plate adopts the perforated percentage of 10%-25%, and the aperture is at 1mm-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040673 CN2931615Y (en) | 2006-03-30 | 2006-03-30 | Fire retardant insulating composite sound-absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620040673 CN2931615Y (en) | 2006-03-30 | 2006-03-30 | Fire retardant insulating composite sound-absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2931615Y true CN2931615Y (en) | 2007-08-08 |
Family
ID=38348115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620040673 Expired - Fee Related CN2931615Y (en) | 2006-03-30 | 2006-03-30 | Fire retardant insulating composite sound-absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2931615Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828564A (en) * | 2012-09-21 | 2012-12-19 | 四川正升声学科技有限公司 | Sound insulation module and sound absorption and insulation composite structure of embedded truss structure with sound insulation module |
| CN104481104A (en) * | 2014-11-19 | 2015-04-01 | 中国测试技术研究院声学研究所 | Indoor sound absorption jet drawing trim plate for dwelling house |
-
2006
- 2006-03-30 CN CN 200620040673 patent/CN2931615Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828564A (en) * | 2012-09-21 | 2012-12-19 | 四川正升声学科技有限公司 | Sound insulation module and sound absorption and insulation composite structure of embedded truss structure with sound insulation module |
| CN102828564B (en) * | 2012-09-21 | 2014-07-02 | 四川正升声学科技有限公司 | Sound insulation module and sound absorption and insulation composite structure of embedded truss structure with sound insulation module |
| CN104481104A (en) * | 2014-11-19 | 2015-04-01 | 中国测试技术研究院声学研究所 | Indoor sound absorption jet drawing trim plate for dwelling house |
| CN104481104B (en) * | 2014-11-19 | 2016-08-24 | 中国测试技术研究院声学研究所 | A kind of Indoor Residential Ecological sound absorption air brushing plaque |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207260354U (en) | A kind of noise control damping Acoustic barrier plate | |
| CN106285083B (en) | A kind of substation's noise-reduction method | |
| CN201883721U (en) | Sound absorption structure for transformer substation | |
| CN103545096A (en) | Transformer denoising device | |
| CN202370112U (en) | Strong sound absorption wide frequency composite structure | |
| CN106558302A (en) | A kind of sound source device noise-reduction method | |
| CN203573642U (en) | Sound absorption structure | |
| RU2721615C1 (en) | Sound-absorbing structure and soundproof room | |
| CN2931615Y (en) | Fire retardant insulating composite sound-absorption device | |
| CN1827935A (en) | Flame-retardant insulating composite sound absorber with resonant sound absorption chamber | |
| CN106653286B (en) | A kind of American Unit Substation noise-reduction case | |
| CN205116450U (en) | Two -fold composite flame retardant damping acoustic celotex board | |
| CN206368512U (en) | A kind of sound absorbing-insulating barrier | |
| CN103541450A (en) | Transformer noise-absorbing denoising structure | |
| CN202299528U (en) | Silencing and sound-insulating integrated device | |
| CN102995781A (en) | Sound-absorbing device | |
| CN204185954U (en) | A kind of sound-absorbing metal plate | |
| CN201689670U (en) | Flame-retardant environment-friendly porous sound-absorbing material component | |
| CN220475271U (en) | 110kV transformer substation noise reduction system | |
| CN211524211U (en) | Small-size silence room | |
| CN206368454U (en) | A kind of factory building fire-retardant heat insulation noise reduction wall | |
| CN215290966U (en) | Novel inorganic heat preservation wallboard | |
| CN211873642U (en) | Decorative board and decorative structure for ceiling or wall surface | |
| CN103669767B (en) | Decorative composite sound absorption structure | |
| CN214657909U (en) | Sound absorption and noise reduction composite board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20130330 |