CN206340335U - A kind of impedance complex formula anechoic sheet - Google Patents
A kind of impedance complex formula anechoic sheet Download PDFInfo
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- CN206340335U CN206340335U CN201621264669.2U CN201621264669U CN206340335U CN 206340335 U CN206340335 U CN 206340335U CN 201621264669 U CN201621264669 U CN 201621264669U CN 206340335 U CN206340335 U CN 206340335U
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- resonantron
- anechoic sheet
- decoration panel
- complex formula
- impedance complex
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model provides a kind of impedance complex formula anechoic sheet, is that resonantron is set between two layers of decoration panel of perforating, resonantron one end closing, the other end is connected with a perforation decoration panel.The utility model proposes impedance complex formula anechoic sheet, it is the pipeline that one or more certain lengths are set within the framework of common anechoic sheet, close the other end and be connected by elbow with perforation decoration panel in pipeline one end, form resonantron or resonantron row, the Noise measarement of low-frequency range is realized using 1/4 wavelength tube resonant silencing principle, so as to improve the low-frequency range acoustic absorptivity of anechoic sheet.
Description
Technical field
The utility model belongs to sound-absorbing material field, and in particular to a kind of sound absorption dress for being provided with quarter-wave long tube
Put.
Background technology
Sound-absorbing material is to control noise and improve the material of environment tonequality, by the difference of sound absorbing mechanism, the knot of sound-absorbing material
Structure can be divided into porous sound absorption and the major class of resonance sound-absorbing structure two.Common anechoic sheet is with the decoration panel formation framework, interior charged sound of perforating
Cotton, good high-frequency noises control effect is realized using resistive sound absorbing mechanism, but the wave-length coverage of its sound absorption is narrower；Eliminate the noise
Using inorganic discrete materials such as mineral wool, mineral wools more than the sound absorption cotton of filling in piece, this layer of porous material thickness is generally 10~
15 centimetres, there is good sound absorption to 250Hz frequencies above scopes, but it is poor to below 250Hz low-frequency range acoustically effective.
Utility model content
In place of in view of the shortcomings of the prior art, the purpose of this utility model, which is to provide one kind, can improve existing noise elimination
The device of device low-frequency range acoustic absorptivity and soundproof effect.
The concrete technical scheme for realizing the object of the invention is：
A kind of impedance complex formula anechoic sheet, is to set resonantron, described resonantron one end between two layers of decoration panel of perforating
Closing, the other end is connected with a perforation decoration panel.
Wherein, two layers perforate decoration panel between filled with sound absorption cotton, the sound-absorbing material be mineral wool, rock wool, mineral wool,
One kind in felt, foamed plastics, expanded perlite, the perforation decoration panel is aluminium perforated plate, wooden perforated plate, imitation wood perforated plate
In one kind.
Further, the length of the resonantron is 0.01~4m, and resonantron includes straight tube and elbow two parts, straight tube
One end is elbow, and the elbow of resonantron is connected with perforation decoration panel, the other end closing of resonantron.
Resonantron only in this side opening being connected with perforated plate air-flow can be entered, and the other end is closing.
Impedance complex formula anechoic sheet of the present utility model, available for the making of silencer, silencer is outside between the parallel grade of inframe
Away from several the utility model anechoic sheets are laid, it can also be installed directly in ventilation shaft, the framework and ventilation duct of perforated plate
Road inwall is fixed together.
The beneficial effects of the utility model are：
The utility model proposes impedance complex formula anechoic sheet, set one or more within the framework of common anechoic sheet
The pipeline of certain length, pipeline one end is closed the other end and is connected by elbow with perforation decoration panel, forms resonantron or resonantron
Row, the Noise measarement of low-frequency range is realized using 1/4 wavelength tube resonant silencing principle, so as to improve the low-frequency range sound absorption system of anechoic sheet
Number.Resonant silencing frequency is decided by pipe range, and theoretical calculation method is f=c/ (4L).Frequency range for 20~8500Hz is come
Say, the different resonant pipe of multiple length can be set, the frequency bandwidth of resonant silencing is extended.
Brief description of the drawings
Fig. 1 is the stereogram of impedance complex formula anechoic sheet of the present utility model.
Fig. 2 is the perspective view of impedance complex formula anechoic sheet.
Fig. 3 is the structural representation being arranged in ventilation shaft of impedance complex formula anechoic sheet.
In figure, 1 is resonantron, and 101 be the elbow of resonantron, and 2 be sound-absorbing material, and 3 be aluminium perforated plate, and 4 be silencer
Housing, 5 be impedance complex formula anechoic sheet.
Embodiment
Now illustrate the utility model with following most preferred embodiment, but be not limited to scope of the present utility model.
Apparatus and method used in embodiment, unless otherwise specified, are this area common device and method.
, it is necessary to explanation, term " " center ", " longitudinal direction ", " transverse direction ", " vertical ", " water in description of the present utility model
It is flat ", " top ", " bottom " " interior ", the orientation of the instruction such as " outer " or position relationship for based on orientation shown in the drawings or position relationship, only
It is to be described for the ease of description the utility model with simplified, rather than indicates or imply that the device or element of meaning must be with spies
Fixed orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
Embodiment 1：
Referring to Fig. 1, a kind of impedance complex formula anechoic sheet is the setting resonantron 1 between two layers of aluminium perforated plate 3, described common
The one end of vibration tube 1 is closed, and the other end is connected with a perforation decoration panel.Sound-absorbing material 2 is filled between two layers of decoration panel of perforating,
The sound-absorbing material is mineral wool.
Referring to Fig. 2, in the present embodiment, the length of resonantron is 0.68m, and resonantron includes straight tube and elbow two parts,
One end of straight tube is elbow, and the elbow 101 of resonantron is connected with perforation decoration panel, the other end closing of resonantron.Resonantron leads to
Cross elbow to be connected with aluminium perforated plate 3, the hole of 40mm diameters is provided with the position of elbow connection aluminium perforated plate.On aluminium perforated plate 3
Distance is 20mm, a diameter of 40mm of resonantron 1 between perforate；16 resonantrons of arrangement in every square metre of perforation decoration panel.
Referring to Fig. 3, impedance complex formula anechoic sheet 5 of the present utility model is installed in ventilation shaft.Indicate airflow arrows
Two straight sections are the ventilation shafts for not installing silencer, and middle one section is that silencer (cuts away a section, with disappearing equivalent to pipeline
The replacement of sound device), silencer is made up of housing 4 and impedance complex formula anechoic sheet 5, and impedance complex formula anechoic sheet 5 is fixed on housing 4
Interior, anechoic sheet is parallel to be equidistantly arranged on outer inframe, and air-flow is circulated by the gap (being also silencing channel) between anechoic sheet.
Embodiment 2：
A kind of impedance complex formula anechoic sheet, is setting resonantron 1, described resonantron one end between two layers of aluminium perforated plate 3
Closing, the other end is connected with a perforation decoration panel.Sound-absorbing material 2, the sound absorption are filled between two layers of decoration panel of perforating
Material is rock wool.
In the present embodiment, resonantron for 0.5m, 0.68m, each 5 pipes of tri- length of 1.4m, the diameter of pipe is 40mm；
It is connected by elbow with aluminium perforated plate, the hole of 40mm diameters is provided with the position of elbow connection aluminium perforated plate.On aluminium perforated plate 3
It is 16 resonantrons of arrangement in 20mm, every square metre of perforation decoration panel of a diameter of 8mm of resonantron 1 between perforate, it is long from short
It is sequentially arranged.
The anechoic sheet of the present embodiment, compared to the setting of embodiment 1, the scope of frequency of noise elimination is bigger.
Embodiment 3：
A kind of impedance complex formula anechoic sheet, is to set resonantron 1, the resonantron one between two layers of wooden perforation plaque
End seal is closed, and the other end is connected with a perforation decoration panel.Sound-absorbing material 2 is filled between two layers of decoration panel of perforating, it is described to inhale
Sound material is foamed plastics.
In the present embodiment, resonantron is 0.68m, and each 5 pipes of 1.4m length, the diameter of pipe is 40mm；By elbow with
Aluminium perforated plate is connected, and the hole of 40mm diameters is provided with the position of elbow connection aluminium perforated plate.Cloth in every square metre of perforation decoration panel
10 resonantrons are put, long tube and short tube are spaced.
Embodiment above is only that preferred embodiment of the present utility model is described, not to the utility model
Scope be defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff to this
The all variations and modifications that the technical scheme of utility model is made, all should fall into the guarantor that claims of the present utility model are determined
In the range of shield.
Claims (3)
1. a kind of impedance complex formula anechoic sheet, it is characterised in that be to set resonantron between two layers of decoration panel of perforating, described common
Vibration tube one end is closed, and the other end is connected with a perforation decoration panel.
2. impedance complex formula anechoic sheet according to claim 1, it is characterised in that filled between two layers of decoration panel of perforating
There is sound-absorbing material, the sound-absorbing material is one kind in mineral wool, rock wool, mineral wool, felt, foamed plastics, expanded perlite；Institute
It is one kind in aluminium perforated plate, wooden perforated plate, imitation wood perforated plate to state perforation decoration panel.
3. impedance complex formula anechoic sheet according to claim 1, it is characterised in that the length of the resonantron is 0.01-
4m, resonantron includes straight tube and elbow two parts, and one end of straight tube is elbow, and the elbow of resonantron is connected with perforation decoration panel,
The other end closing of resonantron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264669.2U CN206340335U (en) | 2016-11-21 | 2016-11-21 | A kind of impedance complex formula anechoic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264669.2U CN206340335U (en) | 2016-11-21 | 2016-11-21 | A kind of impedance complex formula anechoic sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206340335U true CN206340335U (en) | 2017-07-18 |
Family
ID=59306999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621264669.2U Active CN206340335U (en) | 2016-11-21 | 2016-11-21 | A kind of impedance complex formula anechoic sheet |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581848A (en) * | 2017-09-28 | 2019-04-05 | 富士施乐株式会社 | Denoising structure and image forming apparatus |
| CN111489727A (en) * | 2020-05-22 | 2020-08-04 | 华电重工股份有限公司 | Silencing sheet |
-
2016
- 2016-11-21 CN CN201621264669.2U patent/CN206340335U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109581848A (en) * | 2017-09-28 | 2019-04-05 | 富士施乐株式会社 | Denoising structure and image forming apparatus |
| CN109581848B (en) * | 2017-09-28 | 2023-01-13 | 富士胶片商业创新有限公司 | Noise reduction structure and image forming apparatus |
| CN111489727A (en) * | 2020-05-22 | 2020-08-04 | 华电重工股份有限公司 | Silencing sheet |
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