CN207296051U - A kind of linear sound absorber - Google Patents
A kind of linear sound absorber Download PDFInfo
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- CN207296051U CN207296051U CN201720399708.8U CN201720399708U CN207296051U CN 207296051 U CN207296051 U CN 207296051U CN 201720399708 U CN201720399708 U CN 201720399708U CN 207296051 U CN207296051 U CN 207296051U
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Abstract
The utility model belongs to noise reduction technology field, more particularly to a kind of linear sound absorber.The utility model provides a kind of linear sound absorber, and linear sound absorber includes：Female groove, Micropunch Acoustic Board and sound absorption cotton；Female groove is a uncovered hollow cavity, and Micropunch Acoustic Board is arranged at the missing lid of cavity, and sound absorption cotton is arranged at the inner wall surface of female groove.Through experimental tests can obtain, and a kind of linear sound absorber provided by the utility model, 1.2m is up in the absorption area of 160Hz2, single modified body surface area is 0.6m2, its acoustic absorptivity is equal to 2, is a kind of super sound absorber, linear sound absorber in whole frequency range absorption area up to 1.2m2, accomplish available for needs in the constant scene of holding tonequality.The utility model is solved in existing technology, is directed to the suspended absorber of low-frequency sound, only can carry out absorption processing to low-frequency sound, can not provide the sound of intermediate frequency and high frequency extra absorption, and application scenarios have limited technological deficiency.
Description
Technical field
The utility model belongs to noise reduction technology field, more particularly to a kind of linear sound absorber.
Background technology
With higher sound absorption efficiency.This is because suspended absorber has effective absorption area of bigger, including space
Upper top surface, bottom surface and the side of sound absorber；Further, since sound wave is multiple between upper top surface and the building top surface of sound absorber
Reflection, so as to repeatedly be absorbed, increases absorption, improves sound absorption efficiency.
The sound absorbing capabilities of suspended absorber are often represented with effective absorption of the single sound absorber of different frequency.Inhale in space
The sqouynd absorption lowering noise of sound body or reduce the reverberation time effect depend primarily upon suspended absorber quantity, suspension spacing and material and
Structure, it is also related with the sound field conditions in space.As former chamber internal surface absorption is seldom, reflected sound is more, the reverberation time
Very long, then it is often 5~8 decibels to hang the noise reduction after suspended absorber, up to 10~12 decibels during highest；Such as former indoor table
Face absorption is larger, and reverberation process unobvious, then need not hang suspended absorber.However, of the prior art be directed to low frequency
The suspended absorber of sound, only can carry out absorption processing to low-frequency sound, can not provide volume to the sound of intermediate frequency and high frequency
Outer absorption, application scenarios have limitation.
Therefore, a kind of linear sound absorber is developed, the space for solving in the prior art, to be directed to low-frequency sound absorbs sound
Body, only can carry out absorption processing to low-frequency sound, can not provide the sound of intermediate frequency and high frequency extra absorption, applied field
Scape has limited technological deficiency, becomes those skilled in the art's urgent problem to be solved.
Utility model content
In view of this, the utility model provides a kind of linear sound absorber, for solving in the prior art, to be directed to low frequency
The suspended absorber of sound, only can carry out absorption processing to low-frequency sound, can not provide volume to the sound of intermediate frequency and high frequency
Outer absorption, application scenarios have limited technological deficiency.
The utility model provides a kind of linear sound absorber, and the linear sound absorber includes：Female groove, Micropunch Acoustic Board and
Absorb sound cotton；
The female groove is a uncovered hollow cavity, and the Micropunch Acoustic Board is arranged at the missing lid of the cavity, institute
State the inner wall surface that sound absorption cotton is arranged at the female groove.
Preferably, the length of the cavity is more than 200mm.
Preferably, the thickness of the Micropunch Acoustic Board is 0.6mm.
Preferably, the quantity two of the Micropunch Acoustic Board；
Two Micropunch Acoustic Boards are arranged in parallel.
Preferably, the aperture of the Micropunch Acoustic Board is less than 1.0mm.
Preferably, the punching rate of the Micropunch Acoustic Board is less than 13%.
Preferably, the thickness of the female groove is 1.0mm, and the sound absorption cotton is centrifugally glass-wool.
Preferably, the Micropunch Acoustic Board is set fluted.
Preferably, the quantity of the groove is two.
Preferably, the outer surface of the female groove sets the flexible soft decorative encasing of sound absorption.
In conclusion the utility model provides a kind of linear sound absorber, the linear sound absorber includes：Female groove, micro- wear
Hole acoustic board and sound absorption cotton；The female groove is a uncovered hollow cavity, and the Micropunch Acoustic Board is arranged at lacking for the cavity
Lose at lid, the sound absorption cotton is arranged at the inner wall surface of the female groove.Through experimental tests can obtain, one kind provided by the utility model
Linear sound absorber, 1.2m is up in the absorption area of 160Hz2, single modified body surface area is 0.6m2, its acoustic absorptivity is equal to
2, be a kind of super sound absorber, linear sound absorber in whole frequency range absorption area up to 1.2m2, done available for needs
In the scene constant to holding tonequality, such as：Between broadcast and recording studio etc..A kind of linear sound absorber provided by the utility model, solution
In existing technology of having determined, the suspended absorber of low-frequency sound is directed to, can only carry out absorption processing to low-frequency sound, can not
Extra absorption is provided to the sound of intermediate frequency and high frequency, application scenarios have limited technological deficiency.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of schematic cross-section for tangent sound absorber that the utility model embodiment provides；
Fig. 2 is a kind of unit sound absorber absorption area for tangent that the utility model embodiment provides；
Wherein, in Fig. 1, female groove 1, Micropunch Acoustic Board 2, sound absorption cotton 3 and the flexible soft decorative encasing 4 that absorbs sound.
Embodiment
The utility model embodiment provides a kind of linear sound absorber, for solving in existing technology, is directed to low frequency
The suspended absorber of sound, only can carry out absorption processing to low-frequency sound, can not provide volume to the sound of intermediate frequency and high frequency
Outer absorption, application scenarios have limited technological deficiency.
To enable the purpose of this utility model, feature and advantage more obvious and understandable, below in conjunction with this
Attached drawing in utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, shows
So, the embodiments described below are only the utility model part of the embodiment, and not all embodiment.Based on this practicality
Embodiment in new, all other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model embodiment provides a kind of linear sound absorber, including：Female groove 1, micropunch sound absorption
Plate 2 and sound absorption cotton 3；Female groove 1 is a uncovered hollow cavity, and Micropunch Acoustic Board 2 is arranged at the missing lid of cavity, and absorb sound cotton 3
It is arranged at the inner wall surface of female groove 1.In the technical solution that the utility model embodiment provides, the sound in environment passes through micropunch
Acoustic board 2 enters inside cavity so that after cavity produces resonance, sound is decayed；Meanwhile absorbed sound in sound by micropunch
After plate 2 enters inside cavity, by the friction with the cotton 3 that absorbs sound, energy exchange is produced, adds the processing effect for intermediate frequency sound
Fruit.Through experimental tests can obtain, and a kind of linear sound absorber that the utility model embodiment provides, is up in the absorption area of 160Hz
1.2m2, single modified body surface area is 0.6m2, its acoustic absorptivity is equal to 2, is a kind of super sound absorber, linear sound absorber
Absorption area is up to 1.2m in whole frequency range2, accomplish available for needs in the constant scene of holding tonequality, such as：Broadcast
Between and recording studio etc..A kind of linear sound absorber provided by the utility model, solves in existing technology, is directed to low-frequency sound
Suspended absorber, can only carry out absorption processing to low-frequency sound, the sound of intermediate frequency and high frequency can not be provided extra
Absorb, application scenarios have limited technological deficiency.
On the basis of ensuring the good acoustically effective of linear sound absorber, while take into account to reduce the volume of linear sound absorber,
Further to reduce its weight, while being easily installed, do not affect the appearance.A kind of line provided due to the utility model embodiment
Property sound absorber, primarily to absorb processing low-frequency range sound, since the wavelength of sound of low-frequency range is longer, in female groove 1
The route that interior needs are decayed is also relatively long, considers by testing and can be calculated, and the utility model embodiment provides
A kind of linear sound absorber in, the length of cavity is more than 200mm.
One step ground optimisation technique scheme, considers the good acoustically effective of Micropunch Acoustic Board 2 and mitigates linear inhale
The angle of the weight of sound body, not only can pass through Micropunch Acoustic Board 2 in order to sound, but also can be absorbed by Micropunch Acoustic Board 2
A part of sound.In the technical solution that the utility model embodiment provides, the thickness of Micropunch Acoustic Board 2 is 0.6mm.
Effectively to ensure the good acoustically effective of Micropunch Acoustic Board 2, further optimize the sound absorption effect of linear sound absorber
Fruit, in a kind of linear sound absorber that the utility model embodiment provides, the quantity two of Micropunch Acoustic Board 2；Two micro- to wear
Hole acoustic board 2 is arranged in parallel, and sound absorption cotton 3 is arranged between Micropunch Acoustic Board 2.Sound is passing sequentially through first piece of micropunch suction
, still can be according to the principle of Helmholtz resonator and perforated plate resonator, to the all-bottom sound not yet handled after sound plate 2
Sound, increases strength disposal again, further optimizes the acoustically effective of linear sound absorber.
Drawn by determination of technical staff, the aperture of Micropunch Acoustic Board 2 and perforated area, without being bigger acoustically effective
Better, behind aperture and perforated area arrival a certain threshold value, acoustically effective is deteriorated, and is drawn through test of many times measure, to reach one
A relatively optimal acoustically effective, the utility model embodiment provide technical solution in, the aperture of Micropunch Acoustic Board 2 is less than
1.0mm, the punching rate of Micropunch Acoustic Board 2 are less than 13%.
Further optimisation technique scheme, easy to the installation of linear sound absorber, while ensures that sound can be sent out in the cavity
Decayed after raw effectively resonance, in the technical solution that the utility model embodiment provides, the thickness of female groove 1 is 1.0mm.
Meanwhile on the basis of the good acoustically effective of cotton 3 that ensures to absorb sound, while take into account with the cotton good weatherability that absorbs sound, into
This is low and does not cause the technical standpoint of secondary pollution, in a kind of linear sound absorber that the utility model embodiment provides, sound absorption
Cotton 3 is centrifugally glass-wool.
To be effectively increased the hardness of Micropunch Acoustic Board 2 so that 2 surface of Micropunch Acoustic Board more straight elevator, limited extension
Its service life, in a kind of linear sound absorber that the utility model embodiment provides, Micropunch Acoustic Board 2 sets fluted.
Further optimisation technique scheme, effectively improves the surface property of Micropunch Acoustic Board 2, the utility model embodiment
In the technical solution of offer, the quantity of groove is two.
Further optimisation technique scheme, a kind of linear sound absorber that enhancing the utility model embodiment provides is for high frequency
The assimilation effect of sound, in the utility model embodiment, the outer surface of female groove 1 and Micropunch Acoustic Board 2 sets flexible sound absorption
Soft decorative encasing 4.
Linear sound absorber is made according to the technical solution of above-mentioned offer, measures the acoustics of prepared linear sound absorber
Can, gained acoustical behavior can further regard to Fig. 2.As can be drawn from Figure 2, the technical solution system that the utility model embodiment provides
The linear sound absorber obtained, unit sound absorber absorption area acoustical behavior index is good, and corresponding data can be drawn from Fig. 2, herein
Repeat no more.
In conclusion the utility model provides a kind of linear sound absorber, the linear sound absorber includes：Female groove, micro- wear
Hole acoustic board and sound absorption cotton；The female groove is a uncovered hollow cavity, and the Micropunch Acoustic Board is arranged at lacking for the cavity
Lose at lid, the sound absorption cotton is arranged at the inner wall surface of the female groove.Through experimental tests can obtain, one kind provided by the utility model
Linear sound absorber, 1.2m is up in the absorption area of 160Hz2, single modified body surface area is 0.6m2, its acoustic absorptivity is equal to
2, be a kind of super sound absorber, linear sound absorber in whole frequency range absorption area up to 1.2m2, done available for needs
In the scene constant to holding tonequality, such as：Between broadcast and recording studio etc..A kind of linear sound absorber provided by the utility model, solution
In existing technology of having determined, the suspended absorber of low-frequency sound is directed to, can only carry out absorption processing to low-frequency sound, can not
Extra absorption is provided to the sound of intermediate frequency and high frequency, application scenarios have limited technological deficiency.
A kind of linear sound absorber provided by the utility model is described in detail above, for the general of this area
Technical staff, based on the idea of the embodiment of the present invention, there will be changes in specific embodiments and applications,
In conclusion this specification content should not be construed as the limitation to the utility model.
Claims (10)
1. a kind of linear sound absorber, it is characterised in that the linear sound absorber includes：Female groove, Micropunch Acoustic Board and sound absorption cotton；
The female groove is a uncovered hollow cavity, and the Micropunch Acoustic Board is arranged at the missing lid of the cavity, the suction
Sound cotton is arranged at the inner wall surface of the female groove.
2. linear sound absorber according to claim 1, it is characterised in that the length of the cavity is more than 200mm.
3. linear sound absorber according to claim 1, it is characterised in that the thickness of the Micropunch Acoustic Board is 0.6mm.
4. linear sound absorber according to claim 1, it is characterised in that the quantity two of the Micropunch Acoustic Board；
Two Micropunch Acoustic Boards are arranged in parallel.
5. linear sound absorber according to any one of claims 1 to 4, it is characterised in that the Micropunch Acoustic Board
Aperture is less than 1.0mm.
6. linear sound absorber according to any one of claims 1 to 4, it is characterised in that the Micropunch Acoustic Board
Punching rate is less than 13%.
7. linear sound absorber according to claim 1, it is characterised in that the thickness of the female groove is 1.0mm, the sound absorption
Cotton is centrifugally glass-wool.
8. linear sound absorber according to claim 1, it is characterised in that the Micropunch Acoustic Board sets fluted.
9. linear sound absorber according to claim 8, it is characterised in that the quantity of the groove is two.
10. linear sound absorber according to any one of claims 1 to 4, it is characterised in that the outer surface of the female groove is set
It is equipped with the flexible soft decorative encasing that absorbs sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720399708.8U CN207296051U (en) | 2017-04-17 | 2017-04-17 | A kind of linear sound absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720399708.8U CN207296051U (en) | 2017-04-17 | 2017-04-17 | A kind of linear sound absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207296051U true CN207296051U (en) | 2018-05-01 |
Family
ID=62271327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720399708.8U Active CN207296051U (en) | 2017-04-17 | 2017-04-17 | A kind of linear sound absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207296051U (en) |
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2017
- 2017-04-17 CN CN201720399708.8U patent/CN207296051U/en active Active
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