CN204808875U - Flexible ultramicropore microperforated panel sound absorber - Google Patents
Flexible ultramicropore microperforated panel sound absorber Download PDFInfo
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- CN204808875U CN204808875U CN201520454534.1U CN201520454534U CN204808875U CN 204808875 U CN204808875 U CN 204808875U CN 201520454534 U CN201520454534 U CN 201520454534U CN 204808875 U CN204808875 U CN 204808875U
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Abstract
The utility model relates to a flexible ultramicropore microperforated panel sound absorber, including three -layer bonding composite construction, be the diaphragm layer in proper order, intermediate level and back of the body chamber bottom, the diaphragm layer is flexible material's microperforated panel, the thickness of microperforated panel is the 10 -500 micron, be equipped with a plurality of circular micropores on the microperforated panel, circular mipor aperture is the 10 -500 micron, and distribution density is 104 -1010 / square metre, the intermediate level is flexible material's backup pad, and backup pad thickness is 200 microns - 100 millimeters, be equipped with a plurality of adjacent perpendicular through -holes in the backup pad, the aperture of perpendicular through -hole is 10 microns - 10 millimeters, and 1 arbitrary perpendicular through -hole is corresponding with a 1 -10 micropore, back of the body chamber bottom is the sheet metal of thickness 10 -1000 micron, the utility model discloses the sound absorption frequency band of broad has, and it is easily deformable, can realize the installation of small and exquisite compactness, can satisfy the demand of making an uproar of falling of different shape equipment, very extensive application prospect has.
Description
Technical field
The utility model relates to porous plate acoustic adsorption device technical field, is specifically related to a kind of flexible ultramicropore porous plate acoustic adsorption device structure.
Background technology
Porous plate acoustic adsorption device is a kind of important acoustic absorbant, its simple structure, free from environmental pollution, can use under the rugged surroundings such as high temperature, high humidity, dust, high velocity air impact, and recyclable recycling, 21 century desirable green acoustic absorbant, the existing every field being widely used in Noise measarement.
The important component part of porous plate acoustic adsorption device is microperforated panel, on plate face, be namely installed with the thin plate of a large amount of micropore.Its sound absorbing mechanism is, a large amount of micropore and thin plate cavity below forms resonance sound-absorbing structure, when sound wave is through when having a thin plate of a large amount of micropore, the relative motion of micro porous hollow gas molecule and micropore inner wall surface and friction make acoustic energy convert heat energy to and be dissipated, and play the effect of sqouynd absorption lowering noise.
The aperture of existing microperforated panel is generally at 0.2-1.0mm.Because aperture is comparatively large, therefore wide band sound absorption relative narrower, only has 1-2 octave usually, and individual layer porous plate acoustic adsorption device only has a resonance peak, is difficult to further raising.And current most of microperforated panel is all made by rigid material, lack flexible, not easily flexural deformation, the more difficult installation realizing compact.Along with the needs of practical application, increasing occasion starts the porous plate acoustic adsorption device adopting light and thin, as plastic plate, scale board, organic glass etc., and in architectural use can the transparent material of daylighting; And lacking flexible with the microperforated panel of these materials processings, deflection is little, and some have the noise source noise reduction of distinctive appearance to be not too suitable for engine etc.
Summary of the invention
For the problems referred to above, the technical problems to be solved in the utility model is to provide a kind of flexible distortion, and has the flexible ultramicropore porous plate acoustic adsorption device structure compared with high acoustic absorption performance.
Adopt following technical scheme for this reason:
Flexible ultramicropore porous plate acoustic adsorption device, comprises three layers of bonding composite structure, is followed successively by membrane layer, middle layer and back of the body chamber bottom; Described membrane layer is the microperforated panel of flexible material, and the thickness of described microperforated panel is 10-500 micron; Described microperforated panel is provided with multiple circular micropore, and the aperture of described circular micropore is 10-500 micron, and distribution density is 10
4-10
10individual/square metre; Described middle layer is the back up pad of flexible material, back up pad thickness is 200 microns-100 millimeters, described back up pad is provided with multiple adjacent vertical through hole, and the aperture of described vertical through hole is 10 microns-10 millimeters, and any 1 vertical through hole is corresponding with 1-10 micropore; Described back of the body chamber bottom is the sheet metal of thickness 10-1000 micron.
Preferably, described vertical through hole is regular hexagon, and multiple adjacent vertical through hole forms cellular structure in back up pad.
Preferably, the material of described microperforated panel is polyurethane, polyimide or silica gel.
Preferably, the material of described back up pad is polyurethane, polyimide or silica gel.
Preferably, described sheet metal is aluminium sheet or steel plate.
The beneficial effects of the utility model are: 1, the present invention due to adopt flexible its micropore size of ultramicropore microperforated panel diaphragm can be low to moderate some tens of pm, acoustic frequency bandwidth, overcome the deficiency that prior art mesoporous is large, wide band sound absorption is narrower, sound absorbing capabilities is poor, and microperforated panel itself has very large flexibility, can be out of shape by deep camber the outer shape highly adapting to origin of target noise (as all kinds of engines etc.), " close-fitting type " noise reduction is carried out to it.
2, the present invention is owing to having the flexible intermediate layer of vertical through hole structure, and it is used for supporting flexible microperforated panel diaphragm on the one hand, also can retrain the direction of incident acoustic wave on the other hand, plays the effect strengthening sound absorption.
In sum, the utility model, using super thin metal aluminium flake as back of the body chamber primer, by it together with flexible microperforated panel diaphragm, flexible intermediate layer, is combined into flexible ultramicropore porous plate acoustic adsorption device.This flexible ultramicropore microperforated panel has wider sound sucting band, easily deformable, can realize the installation of compact, can meet the noise reduction demand of difformity equipment, have application prospect widely.
Accompanying drawing explanation
Be described further with regard to embodiment of the present utility model below in conjunction with accompanying drawing, wherein:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the interlayer structure schematic diagram in the utility model embodiment 1;
Fig. 3 is the interlayer structure schematic diagram in the utility model embodiment 2.
Embodiment
Embodiment 1
With reference to the flexible ultramicropore porous plate acoustic adsorption device shown in Fig. 1 and Fig. 2, be made up of three layers of bonding composite structure, be followed successively by membrane layer 1, middle layer 2 and back of the body chamber bottom 3.
Membrane layer 1 is the microperforated panel that the flexible materials such as polyurethane, polyimide or silica gel are made, and the thickness of microperforated panel is 10-500 micron; Microperforated panel is provided with multiple circular micropore 4, and the aperture of circular micropore 4 is 10-500 micron, and distribution density is 10
4-10
10individual/square metre; Middle layer 2 is the back up pad that the flexible materials such as polyurethane, polyimide or silica gel are made, back up pad thickness is 200 microns-100 millimeters, back up pad is provided with the vertical through hole 5 of multiple adjacent circle, the aperture of vertical through hole 5 is 10 microns-10 millimeters, and any 1 vertical through hole 5 is corresponding with 1-10 micropore 4; Back of the body chamber bottom 3 is the aluminium flake thin plate of thickness 10-1000 micron.
Embodiment 2
With reference to the flexible ultramicropore porous plate acoustic adsorption device shown in Fig. 1 and Fig. 3, be made up of three layers of bonding composite structure, be followed successively by membrane layer 1, middle layer 2 and back of the body chamber bottom 3.
Membrane layer 1 is the microperforated panel that the flexible materials such as polyurethane, polyimide or silica gel are made, and the thickness of microperforated panel is 10-500 micron; Microperforated panel is provided with multiple circular micropore 4, and the aperture of circular micropore 4 is 10-500 micron, and distribution density is 10
4-10
10individual/square metre; Middle layer 2 is the back up pad that the flexible materials such as polyurethane, polyimide or silica gel are made, back up pad thickness is 200 microns-100 millimeters, back up pad is provided with multiple adjacent vertical through hole 6, vertical through hole 6 is in regular hexagon, multiple adjacent vertical through hole 6 forms cellular structure in back up pad, comparatively manhole adopts cellular structure to make overall middle layer density lower, and weight is lighter, saves material cost simultaneously.The aperture of regular hexagon cylindrical is 10 microns-10 millimeters, and any 1 vertical through hole 5 is corresponding with 1-10 micropore 4; Back of the body chamber bottom 3 is the steel disc thin plate of thickness 10-1000 micron.
Above-mentioned two embodiment schemes in use, because microperforated panel is the ultra-microporous that flexible material makes, have acoustic frequency bandwidth and bending deformed feature concurrently, existing good sound absorbing capabilities, highly can adapt to again the outer shape of the curved surface noise sources such as engine, volume is little, spaces compact, has important and more wide application prospect.And due to the vertical through hole structure of flexible intermediate layer, its is used for supporting flexible microperforated panel diaphragm on the one hand, also can retrain the direction of incident acoustic wave on the other hand, plays the effect strengthening sound absorption.Again in addition super thin metal steel disc as back of the body chamber primer, the interlayer cohesive of itself and flexible microperforated panel diaphragm, flexible through-hole structure is combined with each other, further enhancing the stability of flexible ultramicropore porous plate acoustic adsorption device structure, make it can realize when sound absorbing capabilities is excellent firmly installing.
The above; be only the better embodiment of the utility model; but the utility model protection domain is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore the utility model protection domain is as the criterion with the protection domain of claims.
Claims (5)
1. flexible ultramicropore porous plate acoustic adsorption device, is characterized in that, comprises three layers of bonding composite structure, is followed successively by membrane layer, middle layer and back of the body chamber bottom; Described membrane layer is the microperforated panel of flexible material, and the thickness of described microperforated panel is 10-500 micron; Described microperforated panel is provided with multiple circular micropore, and the aperture of described circular micropore is 10-500 micron, and distribution density is 10
4-10
10individual/square metre; Described middle layer is the back up pad of flexible material, back up pad thickness is 200 microns-100 millimeters, described back up pad is provided with multiple adjacent vertical through hole, and the aperture of described vertical through hole is 10 microns-10 millimeters, and any 1 vertical through hole is corresponding with 1-10 micropore; Described back of the body chamber bottom is the sheet metal of thickness 10-1000 micron.
2. flexible ultramicropore porous plate acoustic adsorption device according to claim 1, it is characterized in that, described vertical through hole is regular hexagon, and multiple adjacent vertical through hole forms cellular structure in back up pad.
3. flexible ultramicropore porous plate acoustic adsorption device according to claim 1, is characterized in that, the material of described microperforated panel is polyurethane, polyimide or silica gel.
4. flexible ultramicropore porous plate acoustic adsorption device according to claim 1, is characterized in that, the material of described back up pad is polyurethane, polyimide or silica gel.
5. flexible ultramicropore porous plate acoustic adsorption device according to claim 1, is characterized in that, described sheet metal is aluminium sheet or steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520454534.1U CN204808875U (en) | 2015-06-29 | 2015-06-29 | Flexible ultramicropore microperforated panel sound absorber |
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| CN201520454534.1U CN204808875U (en) | 2015-06-29 | 2015-06-29 | Flexible ultramicropore microperforated panel sound absorber |
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| CN204808875U true CN204808875U (en) | 2015-11-25 |
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| CN201520454534.1U Expired - Fee Related CN204808875U (en) | 2015-06-29 | 2015-06-29 | Flexible ultramicropore microperforated panel sound absorber |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931630A (en) * | 2016-04-01 | 2016-09-07 | 北京理工大学 | Composite sound absorption structure for improving metal fiber felt low frequency sound absorption performance |
| CN108867904A (en) * | 2018-07-06 | 2018-11-23 | 长春理工大学 | There is the slim multilayer acoustic board of high acoustic absorption coefficient in low frequency band |
| CN109262937A (en) * | 2018-09-10 | 2019-01-25 | 林枫 | Method for manufacturing polyurethane sound insulation board |
| CN110476204A (en) * | 2017-03-27 | 2019-11-19 | 富士胶片株式会社 | Sound insulation structure and Suond-absorbing panel and tuning panel |
| CN110517659A (en) * | 2019-08-20 | 2019-11-29 | 西安交通大学 | A kind of multiple-unit manifold type microperforated panel broad band low frequency sound absorption structure and its design method |
| CN110956946A (en) * | 2019-11-12 | 2020-04-03 | 哈尔滨工程大学 | Coupling resonance type underwater acoustic covering layer with functional gradient plate |
| CN113226819A (en) * | 2018-12-26 | 2021-08-06 | 雷诺股份公司 | Motor vehicle structure |
| US20210331613A1 (en) * | 2020-04-28 | 2021-10-28 | Global Ip Holdings, Llc | Anti-Microbial, Partition Divider Assembly for a Cart such as a Golf Cart |
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2015
- 2015-06-29 CN CN201520454534.1U patent/CN204808875U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931630B (en) * | 2016-04-01 | 2019-11-22 | 北京理工大学 | A kind of compound sound-absorption structural improving metal fiber felt low frequency absorption performance |
| CN105931630A (en) * | 2016-04-01 | 2016-09-07 | 北京理工大学 | Composite sound absorption structure for improving metal fiber felt low frequency sound absorption performance |
| US10988924B2 (en) | 2017-03-27 | 2021-04-27 | Fujifilm Corporation | Soundproof structure, sound absorbing panel, and sound adjusting panel |
| CN110476204A (en) * | 2017-03-27 | 2019-11-19 | 富士胶片株式会社 | Sound insulation structure and Suond-absorbing panel and tuning panel |
| CN110476204B (en) * | 2017-03-27 | 2020-10-23 | 富士胶片株式会社 | Sound insulation structure, sound absorption panel, and sound adjustment panel |
| CN108867904A (en) * | 2018-07-06 | 2018-11-23 | 长春理工大学 | There is the slim multilayer acoustic board of high acoustic absorption coefficient in low frequency band |
| CN109262937A (en) * | 2018-09-10 | 2019-01-25 | 林枫 | Method for manufacturing polyurethane sound insulation board |
| CN109262937B (en) * | 2018-09-10 | 2020-08-14 | 江苏德励达新材料有限公司 | Method for manufacturing polyurethane sound insulation board |
| CN113226819A (en) * | 2018-12-26 | 2021-08-06 | 雷诺股份公司 | Motor vehicle structure |
| CN110517659A (en) * | 2019-08-20 | 2019-11-29 | 西安交通大学 | A kind of multiple-unit manifold type microperforated panel broad band low frequency sound absorption structure and its design method |
| CN110956946A (en) * | 2019-11-12 | 2020-04-03 | 哈尔滨工程大学 | Coupling resonance type underwater acoustic covering layer with functional gradient plate |
| CN110956946B (en) * | 2019-11-12 | 2022-12-13 | 哈尔滨工程大学 | Coupling resonance type underwater acoustic covering layer with functional gradient plate |
| US20210331613A1 (en) * | 2020-04-28 | 2021-10-28 | Global Ip Holdings, Llc | Anti-Microbial, Partition Divider Assembly for a Cart such as a Golf Cart |
| US11565615B2 (en) * | 2020-04-28 | 2023-01-31 | Global Ip Holdings, Llc | Anti-microbial, partition divider assembly for a cart such as a golf cart |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 Termination date: 20200629 |