CN201195895Y - Sound absorption grille - Google Patents
Sound absorption grille Download PDFInfo
- Publication number
- CN201195895Y CN201195895Y CNU2008201146636U CN200820114663U CN201195895Y CN 201195895 Y CN201195895 Y CN 201195895Y CN U2008201146636 U CNU2008201146636 U CN U2008201146636U CN 200820114663 U CN200820114663 U CN 200820114663U CN 201195895 Y CN201195895 Y CN 201195895Y
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- grid
- sound absorption
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Abstract
The utility model discloses a sound absorption grid. The sound absorption grid is provided with an open-web type metal grid, wherein the surface of the metal grid is provided with a plurality of holes and porous sound absorption materials are arranged in the metal grid. The sound absorption grid utilizes the acoustics principle to place the porous sound absorption materials into the open-web type metal grid, the holes are threaded through four surfaces of the upper surface, the lower surface, the left surface and the right surface of the grid, which enables the grid to have good sound absorption function, and dual requirements of installing grid suspended ceilings in halls and big rooms and carrying out sound absorption treatment can be satisfied simultaneously.
Description
Technical field
The utility model relates to a kind of constructional materials, specifically, is a kind of sound absorption grid.
Background technology
At present, at the hall of large spaces such as various Waiting Lounges, office hall, dining room, market, the furred ceiling mode of grid type is more and more.But the various grid ceiling materials on the existing market do not possess sound absorption function, and this causes the noise pollution of a part of public place more serious, need improve to reduce and eliminate noise pollution.
Existing sound absorption construction mainly contains following these three kinds:
(1) porous material: material internal has a large amount of ventilative micropores; Its sound absorption frequency spectrum broad, intermediate frequency (500-1000Hz), high frequency (〉 1000Hz) sound absorption coefficient is than higher, low frequency (＜500Hz) sound absorption coefficient is less; The surface of this kind material is softer, and outward appearance is plain, generally should not directly be used as surface decoration material.
(2) perforated acoustic board: perforated percentage (gross area in hole accounts for the ratio of the gross area of plate)≤18%, its sound absorption frequency spectrum is narrower, and the intermediate frequency sound absorption coefficient is higher, and the sound absorption coefficient of low frequency, high frequency is less.Perforated percentage〉18% o'clock, itself only plays the effect of protection slab, but porous material is placed on the back of perforated acoustic board again, just becomes a kind of efficient sound absorption construction, can widen the sound absorption frequency spectrum significantly.
(3) resonance sound-absorbing structure for sheet: the air layer thickness of face closure is bigger behind the thin plate,〉low frequency coefficient is higher during 100mm, and the sound absorption coefficient of intermediate frequency, high frequency is less.
The utility model content
The utility model has overcome above-mentioned shortcoming, has proposed a kind of sound absorption grid.This sound absorption grid can reduce and eliminate noise pollution better.This utility model can be improved the structure of existing grid, and grid and sound absorption construction are united two into one, and making it possess existing decoration functions has sound absorption function preferably again.
The technical scheme in the invention for solving the technical problem is:
A kind of sound absorption grid is provided with the metallic grid of type on an empty stomach, and the surface of metallic grid is provided with several holes; This metallic grid is built-in with porous sound-absorbing material.
The preferential selection of porous sound-absorbing material is glass wool or rock wool or polyurethane foam material, and it is good that described metallic grid adopts aluminium matter grid or steel grid.
The porous absorption material outside at above-mentioned sound absorption grid also is coated with nonwoven or plastic sheeting (except the polyurethane foam material).Plastic sheeting is preferably polyester film.Increase nonwoven or plastic sheeting, can prevent effectively that the fibre dust particle of glass wool or rock wool from overflowing, can guarantee indoor air quality, be not subjected to the pollution of glass wool particle or rock wool particle.
Plastic sheeting described in the utility model can be a film common on the market, is preferably polyester film.But except the polyurethane foam material, being because polyurethane foam material belongs to organic open-cell material, is not fibrous material, and it does not have dust problem.
Which kind of material no matter existing grid material on the market adopt, and conclusion is got up, and its structure has only two types:
(1) section solid type: as wooden grid.
(2) section empty stomach type: as the aluminium grid.
Above-mentioned two types grid is not because all meet the principle of sound absorption construction, thereby do not possess sound absorption function.To meet the acoustics requirement in the room in order making, need acoustical board or sound absorption construction to be installed in addition at other metope in room.
Sound absorption cell structure of the present utility model has overcome above-mentioned technical barrier, when satisfying this decorative effect of grid furred ceiling, has satisfied the acoustics requirement simultaneously, has saved decoration space, has shortened the finishing time, has reduced decoration cost.
Based on above-mentioned structure and mechanism, advantage of the present utility model is:
The utility model utilizes Principles of Acoustics, porous sound-absorbing material is placed in the metallic grid of empty stomach type, four faces up and down of grid are all bored a hole, make this grid have good sound absorption function, the double requirements that the grid furred ceiling absorbs sound again and handles should be installed to satisfy the big hall, big room simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an internal construction sectional view of the present utility model.
Description of reference numerals: 1. grid top; 2. grid bottom; 3. hole; 4. porous sound-absorbing material; 5. nonwoven.
The specific embodiment
As depicted in figs. 1 and 2, sound absorption grid of the present utility model is provided with grid top 1 and grid bottom 2, is the aluminium matter grid of type on an empty stomach, and the surface of grid top 1 and grid bottom 2 is provided with several holes 3; Grid top 1 and grid bottom 2 are built-in with porous sound-absorbing material 4.Present embodiment uses glass wool to be sound absorption material.
As shown in Figure 2, the outside of the porous absorption material of grid top 1 and 2 the insides, grid bottom filling also is coated with the nonwoven 5 of the dust granules effusion that prevents glass wool.
Embodiment 2
Porous sound-absorbing material 4 is selected rock wool for use, and grid is a steel, and what be coated on the outside is polyester film 5, and other structure is identical with embodiment 1.
Porous sound-absorbing material 4 is selected polyurethane foam material for use, and grid is an aluminium matter, does not need to use nonwoven or polyester film 5, and other structure is identical with embodiment 1.
The described sound absorption grid of the foregoing description 1-3 has good sound absorption function, can satisfy the big hall, big room simultaneously the double requirements that the grid furred ceiling absorbs sound again and handles should be installed.
More than sound absorption grid provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1. sound absorption grid, it is characterized in that: be provided with the on an empty stomach metallic grid of type, the surface of described metallic grid is provided with several holes; Described metallic grid is built-in with porous sound-absorbing material.
2. sound absorption grid according to claim 1 is characterized in that: described porous sound-absorbing material is glass wool or rock wool.
3. sound absorption grid according to claim 1 is characterized in that: described porous sound-absorbing material is a polyurethane foam material.
4. sound absorption grid according to claim 2 is characterized in that: the outside of described porous sound-absorbing material also is coated with nonwoven or plastic sheeting.
5. sound absorption grid according to claim 4 is characterized in that: described plastic sheeting is a polyester film.
6. sound absorption grid according to claim 1 is characterized in that: described metallic grid is aluminium matter grid or steel grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201146636U CN201195895Y (en) | 2008-05-05 | 2008-05-05 | Sound absorption grille |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201146636U CN201195895Y (en) | 2008-05-05 | 2008-05-05 | Sound absorption grille |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201195895Y true CN201195895Y (en) | 2009-02-18 |
Family
ID=40415532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201146636U Expired - Fee Related CN201195895Y (en) | 2008-05-05 | 2008-05-05 | Sound absorption grille |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201195895Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351735A (en) * | 2014-08-18 | 2016-02-24 | 李新亮 | Sound-absorbing grille |
-
2008
- 2008-05-05 CN CNU2008201146636U patent/CN201195895Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351735A (en) * | 2014-08-18 | 2016-02-24 | 李新亮 | Sound-absorbing grille |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 510000, E building, block D1, block Industrial Park, Po Road, Po Po Road, Whampoa District, Guangzhou, Guangdong Patentee after: Guangzhou Xinjinjie Acoutics Engineering Materials Co., Ltd. Address before: 510000, Haitian building, room 1503, Guanghai tower, Zhongshan Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Xinjinjie Acoutics Engineering Materials Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20140505 |