CN207966486U - Frequency acoustic structure in a kind of hall - Google Patents
Frequency acoustic structure in a kind of hall Download PDFInfo
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- CN207966486U CN207966486U CN201721130932.3U CN201721130932U CN207966486U CN 207966486 U CN207966486 U CN 207966486U CN 201721130932 U CN201721130932 U CN 201721130932U CN 207966486 U CN207966486 U CN 207966486U
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- sound absorption
- low frequency
- middle low
- finish coat
- monomer
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Abstract
The utility model is related to frequency acoustic structures in a kind of hall, including middle low frequency lumen sound absorption structure (1) and finish coat (2), the finish coat (2) is to be made of acoustic window material, wherein described finish coat (2) side is compounded with middle low frequency lumen sound absorption structure (1), the middle low frequency lumen sound absorption structure (1) is internal to form several sound absorption monomers (3) by demarcation strip, it is cavity structure inside the sound absorption monomer (3), the sound absorption monomer (3), middle low frequency lumen sound absorption structure (1) homonymy is equipped with hole, and hole is towards finish coat (2), for installing long tube (4), the long tube (4) is mounted in the cavity of sound absorption monomer (1).The utility model is simple in structure, easy for installation, and since with very thin thickness, very low applicable band will be widely used in terms of iron carbonyl compound processing indoors.
Description
Technical field
The utility model category architectural acoustics technical field, more particularly to frequency acoustic structure in a kind of hall.
Background technology
In architectural acoustics, the reverberation time is a very important index.We can be by using different acoustic absorptivities
Material or structure be allowed in a suitable range to control the reverberation time.For the reverberation time, generally require its
It keeps straight in interested frequency band, not there is big fluctuation.This just proposes relatively high requirement to the control of low frequency, because
The absorption of medium-high frequency be it is relatively good do, the absorption of low frequency is then relatively difficult.
Use wedge sound absorber a kind of in professional anechoic room, it is clear that improper.Common perforated plate adds cotton and cavity
Structure, which also seems, excessively to take up space, and the sound sucting band of sounding board sound absorber is again too narrow.
Invention content
The technical problem to be solved by the utility model is to provide frequency acoustic structures in a kind of hall, solve architectural acoustics
It is middle to add the structure of cotton and cavity excessively to take up space using perforated plate, the sound sucting band of sounding board sound absorber and too narrow problem.
Technical solution adopted by the utility model to solve its technical problems is：Frequency acoustic knot in a kind of hall is provided
Structure, including middle low frequency lumen sound absorption structure and finish coat, the finish coat is to be made of acoustic window material, wherein the finish coat one
Side is compounded with middle low frequency lumen sound absorption structure, and it is single by demarcation strip to form several sound absorptions inside the middle low frequency lumen sound absorption structure
Body, the sound absorption monomer inside are cavity structure, and the sound absorption monomer, middle low frequency lumen sound absorption structure homonymy are equipped with hole, and hole
Towards finish coat, for installing long tube, the long tube is mounted in the cavity of sound absorption monomer.
The further technical solution of the utility model is that the finish coat is each fiber or non-fiber acoustic window material, is used
In to protecting and decorating.
The further technical solution of the utility model is that the middle low frequency lumen sound absorption structure is by several of different sizes
Sound absorption monomer split is formed.
The further technical solution of the utility model is that the middle low frequency lumen sound absorption structure and sound absorption monomer are rule
Or irregular geometry structure.
The further technical solution of the utility model is that the middle low frequency lumen sound absorption structure and sound absorption monomer are vertical
Body geometry.
The further technical solution of the utility model is that the middle low frequency lumen sound absorption structure is ductile metal or non-
Metal material.
By sound absorption frequency formula(wherein, c is the velocity of sound, and s is orifice area, and V is cavity volume, and l is pipe
It is long) it is found that in order to realize low frequency, it is possible to reduce the area of nozzle increases cavity volume or increases the length of pipe：It is managed when reducing
When the area of mouth, sound absorber acoustic resistance can be made excessive, reduce acoustic absorptivity, such as microperforated panel will beat many in the plane
Hole, punching rate increase, and acoustic resistance becomes smaller, and acoustic resistance can be further increased after being coupled due to multiple resonators, so to realize multiple
The acoustic resistance of the coupling of cavity, single structure must be under conditions of a very little, so being obtained to many resonator couplings
The sound absorption effect of wideband and high acoustic absorption coefficient can not be completed only by reducing the opening area of nozzle；Increase resonant cavity volume V
Or pipe range l realizes that low frequency, since cavity tip thickness is very thin, can only increase since pipe range l is generally equivalent to cavity tip thickness
Resonant cavity volume V, therefore, the volume of low frequency acoustic resonator is all very big in engineering at present, and the present invention need not increase resonant cavity volume
V increases pipe range l to absorb low-frequency sound, reduces single resonator occupied area and thickness by the form of long tube in introducing,
And increase bandwidth by coupling multiple sound absorbers.
Advantageous effect
The utility model is simple in structure, easy for installation, and due to very thin thickness, very low applicable band, in room
It will be widely used in terms of interior iron carbonyl compound processing, and since the utility model does not use sponge or acoustical cotton, this
Utility model can design macroporous structure, in use will not dust stratification.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is low frequency lumen sound absorption structure side cutaway opening structure schematic diagram in the utility model.
Fig. 3 is low frequency lumen sound absorption structure Unclosing structure schematic diagram in the utility model.
Specific implementation mode
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
Embodiment 1
As shown in Figs. 1-3, frequency acoustic structure in a kind of hall, including middle low frequency lumen sound absorption structure 1 and finish coat 2,
The finish coat 2 is is made of acoustic window material, wherein 2 side of the finish coat is compounded with middle low frequency lumen sound absorption structure 1, it is described
Several sound absorption monomers 3 are formed by demarcation strip inside middle low frequency lumen sound absorption structure 1,3 inside of the sound absorption monomer is cavity knot
Structure, the sound absorption monomer 3, middle 1 homonymy of low frequency lumen sound absorption structure are equipped with hole, and hole is towards finish coat 2, for installing long tube 4,
The long tube 4 is mounted in the cavity of sound absorption monomer 3.
The finish coat 2 is each fiber or non-fiber acoustic window material, for protecting and decorating.
The middle low frequency lumen sound absorption structure 1 can also be formed by several 3 splits of sound absorption monomer of different sizes, low in described
Frequency lumen sound absorption structure 1 and sound absorption monomer 3 are rule or irregular geometry structure.
The middle low frequency lumen sound absorption structure 1 and sound absorption monomer 3 are solid geometry structure.
Middle 1 material of low frequency lumen sound absorption structure is ductile metal or nonmetallic materials.
In actual use, designed middle low frequency lumen sound absorption structure 1 is compounded on finish coat 2, middle low frequency lumen is inhaled
Acoustic form 1 on the wall surface of the hall, absorbs sound with 2 integral installation of finish coat, and since the utility model does not use sponge
Or acoustical cotton, therefore the utility model can design macroporous structure, it in use will not dust stratification.
Claims (6)
1. frequency acoustic structure in a kind of hall, including middle low frequency lumen sound absorption structure (1) and finish coat (2), the finish coat
(2) it is to be made of acoustic window material, it is characterised in that：Finish coat (2) side is compounded with middle low frequency lumen sound absorption structure (1),
The middle low frequency lumen sound absorption structure (1) is internal to form several sound absorption monomers (3) by demarcation strip, and the sound absorption monomer (3) is interior
Portion is cavity structure, and the sound absorption monomer (3), middle low frequency lumen sound absorption structure (1) homonymy are equipped with hole, and hole is towards finish coat
(2), for installing long tube (4), the long tube (4) is mounted in the cavity of sound absorption monomer (3).
2. frequency acoustic structure in a kind of hall according to claim 1, it is characterised in that：The finish coat (2) is each
Fiber or non-fiber acoustic window material, for protecting and decorating.
3. frequency acoustic structure in a kind of hall according to claim 1, it is characterised in that：The middle low frequency lumen sound absorption
Structure (1) is formed by several sound absorption monomer (3) splits of different sizes.
4. frequency acoustic structure in a kind of hall according to claim 1, it is characterised in that：The middle low frequency lumen sound absorption
Structure (1) and sound absorption monomer (3) are rule or irregular geometry structure.
5. frequency acoustic structure in a kind of hall according to claim 1 or 4, it is characterised in that：The middle low frequency lumen
Sound absorption structure (1) and sound absorption monomer (3) are solid geometry structure.
6. frequency acoustic structure in a kind of hall according to claim 1, it is characterised in that：The middle low frequency lumen sound absorption
Structure (1) is ductile metal or nonmetallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721130932.3U CN207966486U (en) | 2017-09-05 | 2017-09-05 | Frequency acoustic structure in a kind of hall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721130932.3U CN207966486U (en) | 2017-09-05 | 2017-09-05 | Frequency acoustic structure in a kind of hall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207966486U true CN207966486U (en) | 2018-10-12 |
Family
ID=63724390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721130932.3U Active CN207966486U (en) | 2017-09-05 | 2017-09-05 | Frequency acoustic structure in a kind of hall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207966486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243421A (en) * | 2018-11-08 | 2019-01-18 | 南京光声超构材料研究院有限公司 | A kind of low-frequency sound-absorbing structure for sqouynd absorption lowering noise |
-
2017
- 2017-09-05 CN CN201721130932.3U patent/CN207966486U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243421A (en) * | 2018-11-08 | 2019-01-18 | 南京光声超构材料研究院有限公司 | A kind of low-frequency sound-absorbing structure for sqouynd absorption lowering noise |
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