CN201045218Y - Adjustable type building sound-absorbing structure - Google Patents
Adjustable type building sound-absorbing structure Download PDFInfo
- Publication number
- CN201045218Y CN201045218Y CNU2007200319065U CN200720031906U CN201045218Y CN 201045218 Y CN201045218 Y CN 201045218Y CN U2007200319065 U CNU2007200319065 U CN U2007200319065U CN 200720031906 U CN200720031906 U CN 200720031906U CN 201045218 Y CN201045218 Y CN 201045218Y
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- CN
- China
- Prior art keywords
- front panel
- sound absorption
- material layer
- porous material
- guard shield
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- Expired - Fee Related
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses an adjustable building sound-absorbing structure which comprises a fixed sound-absorbing layer made from a porous material, wherein a protecting board is arranged in front of the fixed sound-absorbing layer, a front face board is arranged in front of the protecting board, and the distance between the front face board and the protecting board is 0 mm to 150 mm. The front face board is a porous material layer, or comprises a hard sheet of which the center is excavated and the hollow portion is affixed with the porous material layer. The front face board is capable of being made into the movable type, when only the absorption of the low frequency sounds is needed, the front face board can be pulled off or removed. When the space between the front face board of the sound-absorbing material and the wall is less than 120 mm, the acoustical absorptivity achieves 0.5 to 1.2 between the frequencies of 100 Hz to 5000 Hz. The utility model can be installed on the indoor side wall via curtain mode, thereby the space is saved, and the sound absorption effect is good.
Description
Technical field
The utility model belongs to the constructional materials field that learns a skill, and what be specifically related to is the building sound absorption construction.
Background technology
Sound absorption material is applied to acoustic control in the hall very early.The present control of severe noise is day by day also played important effect.When the hall is performed music,, need sometimes only all-bottom sound to be absorbed sound absorption material preferably in order to reduce the reverberation sound of low-frequency sound.And when using as conference room, in order to guarantee speech intelligibility, need that but the sound in the range of audibility is carried out full rate and absorb.In Noise Control, the vehicle noise in city also major part concentrates in the medium and low frequency scope.And present most of sound absorption material all has acoustically effective preferably in the medium-high frequency scope, and effect of low-frequency sound absorption is poor.And can't utilize simple means that the sound absorption frequency range is adjusted.
Summary of the invention
The adjustable type building sound absorption construction that the purpose of this utility model is to provide, good effect of low-frequency sound absorption is not only arranged, can also adjust the sound absorption frequency range of material by simple means during use, when being laid on the body of wall, its extexine when 120mm is following, reaches 0.5～1.2 in the time of still making sound absorption coefficient in the frequency range of 100～5000Hz apart from body of wall.
The technical scheme that the utility model adopted is; a kind of adjustable type building sound absorption construction; comprise the fixedly absorbent treatment that is made of porous materials; fixedly the place ahead of absorbent treatment is provided with guard shield; guard shield is not for comprising perforation or imperforate any sheet material of fiberboard, and its surface density is 0.02～10kg/m
2
Characteristics of the present utility model also are,
Wherein the place ahead of guard shield also is provided with front panel, and the distance between front panel and the guard shield is 0～150mm, and front panel is a porous material layer, or the centre of hard plate material is hollowed out, and pastes porous material layer in the hollow part and form.
Wherein fixedly absorbent treatment thickness is 1～100mm.
Porous material layer wherein is selected from the composite material of sponge, foamed plastics or various fibrage and fibrous material and other materials.
The density of porous material layer is 10～700kg/m
3
The front panel that porous material layer is formed can be fixed or portable.
Hard plate material single hole area wherein is 300mm
2～100m
2
Another technical scheme that the utility model adopted is, a kind of adjustable type building sound absorption construction comprises the front panel that guard shield and its place ahead are provided with, and guard shield is not for comprising perforation or imperforate any sheet material of fiberboard, and its surface density is 0.02～10kg/m
2, front panel is a porous material layer, or the centre of hard plate material is hollowed out, and pastes porous material layer in the hollow part and form, the distance between front panel and the guard shield is 0～150mm.
The technical scheme that the utility model adopted can also be, a kind of adjustable type building sound absorption construction, comprise the fixedly absorbent treatment that is made of porous materials, fixedly the place ahead of absorbent treatment is provided with front panel, front panel is a porous material layer, or the centre of hard plate material hollowed out, and paste porous material layer in the hollow part and form, fixedly the distance between absorbent treatment and the front panel is 0～150mm.
Porous material layer wherein is selected from the composite material of sponge, foamed plastics or various fibrage and fibrous material and other materials, and its density is 10～700kg/m
3
Building sound absorption construction of the present utility model, the spacing that makes sound absorption material front panel and body of wall still can make sound absorption coefficient reach 0.5～1.2 between frequency 100～5000Hz when 120mm is following.Like this, the form that material just can heavy curtain is installed on the interior side wall and since side wall than ceiling and back wall more near sound source, so acoustically effective is better.Simultaneously, the adjustability of this structure makes it have low frequency and full-frequency sound absorption effect again, has good practical value.
Description of drawings
Fig. 1 is the low frequency and the full-frequency sound absorption spectrogram of the utility model structure;
Fig. 2 is a structural representation of the present utility model.
Among the figure, 1. fixedly absorbent treatment, 2. guard shield, 3. front panel.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As shown in Figure 2; sound absorption construction of the present utility model; comprise fixedly absorbent treatment 1; fixedly absorbent treatment is the porous material of thickness 1～100mm; fixedly the place ahead of absorbent treatment is provided with guard shield 2; guard shield 2 is not for comprising perforation or imperforate any sheet material of fiberboard, and its surface density is 0.02～10kg/m
2Be provided with front panel 3 in the place ahead of guard shield; making the distance between front panel 3 and the guard shield 2 is 0～150mm, and front panel 3 is a porous material layer, or the centre of hard plate material is hollowed out; and paste porous material layer in the hollow part and form, it is 10～700kg/m that porous material layer selects density
3The composite material of sponge, foamed plastics, various fibrage or fibrous material and other materials, the single hole area of hard plate material is selected 300mm for use
2～100m
2
Front panel 3 can add frame to be fixed, and also can make active type.When only needing to absorb low-frequency sound, front panel can be drawn back or removes.
Second structure that the utility model can also adopt is, the front panel 3 that guard shield 2 and its place ahead are provided with, and guard shield 2 is not for comprising perforation or imperforate any sheet material of fiberboard, its surface density is 0.02～10kg/m
2, front panel 3 is a porous material layer, or the centre of hard plate material is hollowed out, and pastes porous material layer in the hollow part and form, the distance between front panel 3 and the guard shield 2 is 0～150mm.
The 3rd structure that the utility model can also adopt is, the fixedly absorbent treatment 1 that is made of porous materials, fixedly the place ahead of absorbent treatment 1 is provided with front panel 3, front panel 3 is a porous material layer, or the centre of hard plate material hollowed out, and paste porous material layer in the hollow part and form, fixedly the distance between absorbent treatment 1 and the front panel 3 is 0～150mm.
The utility model utilizes material resonance sound-absorbing principle, the material of different sound absorption characteristics is made up and produce a plurality of formants, make distance between material front panel and the body of wall under the condition less than 120mm, the sound absorption spectrum curve still remains on the higher position.
Fig. 1 be the utility model structure in front the distance between plate and the body of wall at the sound absorption frequency spectrum that equals under the condition of 120mm.Among the figure, low frequency refers to the low frequency absorption situation of structure of the present invention, does not have front panel this moment.Full range refers to the full-frequency sound absorption situation of structure of the present invention, and front panel is arranged this moment.As can be seen from the figure, the sound absorption coefficient of the utility model structure can have low frequency and full-frequency sound absorption effect.
The full range noise reduction coefficient of the utility model structure is 0.98, obviously greater than national I level sound absorption material (greater than 0.8).
Claims (10)
1. an adjustable type is built sound absorption construction; it is characterized in that; comprise the fixedly absorbent treatment (1) that is made of porous materials; fixedly the place ahead of absorbent treatment (1) is provided with guard shield (2); guard shield (2) is not for comprising perforation or imperforate any sheet material of fiberboard, and its surface density is 0.02～10kg/m
2
2. according to the described building sound absorption construction of claim 1; it is characterized in that; the place ahead of guard shield (2) also is provided with front panel (3); distance between front panel (3) and the guard shield (2) is 0～150mm; front panel (3) is a porous material layer; or the centre of hard plate material hollowed out, and paste porous material layer in the hollow part and form.
3. according to the described sound absorption construction of claim 1, it is characterized in that described fixedly absorbent treatment (1) thickness is 1～100mm.
4. according to the described sound absorption construction of claim 2, it is characterized in that described porous material layer is selected from the composite material of sponge, foamed plastics or various fibrage and fibrous material and other materials.
5. according to the described sound absorption construction of claim 4, it is characterized in that the density of described porous material layer is 10～700kg/m
3
6. according to the described sound absorption construction of claim 2, it is characterized in that the front panel that described porous material layer is formed (3) can be fixed or portable.
7. according to the described sound absorption construction of claim 2, it is characterized in that described hard plate material single hole area is 300mm
2～100m
2
8. an adjustable type building sound absorption construction is characterized in that, comprise the front panel (3) that guard shield (2) and its place ahead are provided with, guard shield (2) is not for comprising perforation or imperforate any sheet material of fiberboard, and its surface density is 0.02～10kg/m
2, front panel (3) is a porous material layer, or the centre of hard plate material is hollowed out, and pastes porous material layer in the hollow part and form, the distance between front panel (3) and the guard shield (2) is 0～150mm.
9. an adjustable type is built sound absorption construction, it is characterized in that, comprise the fixedly absorbent treatment (1) that is made of porous materials, fixedly the place ahead of absorbent treatment (1) is provided with front panel (3), front panel (3) is a porous material layer, or the centre of hard plate material hollowed out, and paste porous material layer in the hollow part and form, fixedly the distance between absorbent treatment (1) and the front panel (3) is 0～150mm.
10. according to claim 8 or 9 described sound absorption constructions, it is characterized in that described porous material layer is selected from the composite material of sponge, foamed plastics or various fibrage and fibrous material and other materials, its density is 10～700kg/m
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200319065U CN201045218Y (en) | 2007-05-31 | 2007-05-31 | Adjustable type building sound-absorbing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200319065U CN201045218Y (en) | 2007-05-31 | 2007-05-31 | Adjustable type building sound-absorbing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201045218Y true CN201045218Y (en) | 2008-04-09 |
Family
ID=39308691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200319065U Expired - Fee Related CN201045218Y (en) | 2007-05-31 | 2007-05-31 | Adjustable type building sound-absorbing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201045218Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631636A (en) * | 2015-01-28 | 2015-05-20 | 厦门大学 | Variable mls sound absorbing diffuser |
| CN109671419A (en) * | 2018-12-28 | 2019-04-23 | 西安交通大学 | One kind is cracked basis of dual porosity rate sound absorber and its application |
| CN109686354A (en) * | 2018-12-28 | 2019-04-26 | 西安交通大学 | A kind of spiral aperture basis of dual porosity rate sound absorber and its application |
| CN111794568A (en) * | 2020-07-17 | 2020-10-20 | 中国汽车工程研究院股份有限公司 | Sound absorption structure capable of adjusting sound field characteristics in silencing room |
-
2007
- 2007-05-31 CN CNU2007200319065U patent/CN201045218Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631636A (en) * | 2015-01-28 | 2015-05-20 | 厦门大学 | Variable mls sound absorbing diffuser |
| CN109671419A (en) * | 2018-12-28 | 2019-04-23 | 西安交通大学 | One kind is cracked basis of dual porosity rate sound absorber and its application |
| CN109686354A (en) * | 2018-12-28 | 2019-04-26 | 西安交通大学 | A kind of spiral aperture basis of dual porosity rate sound absorber and its application |
| CN109671419B (en) * | 2018-12-28 | 2024-01-12 | 西安交通大学 | Slotting double-porosity sound absorption device and application thereof |
| CN109686354B (en) * | 2018-12-28 | 2024-01-12 | 西安交通大学 | Spiral perforated double-porosity sound absorption device and application thereof |
| CN111794568A (en) * | 2020-07-17 | 2020-10-20 | 中国汽车工程研究院股份有限公司 | Sound absorption structure capable of adjusting sound field characteristics in silencing room |
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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: 20080409 Termination date: 20100531 |