CN105719638A - Composite resonance sound absorption structure - Google Patents
Composite resonance sound absorption structure Download PDFInfo
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- CN105719638A CN105719638A CN201410734866.5A CN201410734866A CN105719638A CN 105719638 A CN105719638 A CN 105719638A CN 201410734866 A CN201410734866 A CN 201410734866A CN 105719638 A CN105719638 A CN 105719638A
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- sound absorption
- composite
- cover plate
- sound
- hole
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 98
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 claims description 6
- 241000168254 Siro Species 0.000 claims description 5
- 239000013536 elastomeric material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 238000009987 spinning Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000002649 leather substitute Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000000123 paper Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000283080 Proboscidea <mammal> Species 0.000 description 1
- 208000013201 Stress fracture Diseases 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
The invention relates to the technical field of sound absorption plates, and discloses a composite resonance sound absorption structure. The structure comprises a bottom plate, side walls, and a cover plate. The cover plate and the bottom plate are arranged at an interval in an opposite manner. The side walls are respectively in tight connection with the bottom plate and the cover plate, thereby forming a sound absorption back cavity. The cover plate is provided with a plurality of miniature sound absorption holes and a plurality of composite sound absorption holes. Each composite sound absorption hole is provided with one sound absorption diaphragm. The cover plate is provided with the plurality of composite sound absorption holes, and the sound absorption holes are provided with the sound absorption diaphragms in a pasted manner, thereby enlarging the sound absorption bandwidth of the structure. The structure is easy to machine, is low in cost, is convenient to install, and is good in sound absorption effect.
Description
Technical field
The present invention relates to acoustic board technical field, particularly relate to a kind of composite resonant sound absorption structure.
Background technology
Traditional perforated plate resonance absorption structure, its perforated plate has behind each hole closing cavity, is equivalent to " Helmholtz " resonator of many parallel connections, when the frequency of incidence wave and the resonant frequency of system are consistent, namely produces resonance.Now, the reciprocal air vibration at perforated plate hole place, its amplitude reaches maximum, and rubs and damp also maximum, and acoustic energy is changed into heat energy because of viscous loss, and namely acoustic energy dissipation reaches maximum.This is the advantage of perforated plate resonance absorption structure.But this structure also has the shortcoming that it is intrinsic, and it main disadvantage is that: the selectivity of frequency is strong, that is to say that its sound sucting band is narrow, near resonant frequency, only just can have a good sound absorbing capabilities, and off-resonance frequence, its acoustically effective is substantially deteriorated.Widening effective wide band sound absorption of monolayer porous plate acoustic adsorption device, a kind of method is to adopt the microperforated panel soundabsorbing construction of MULTILAYER COMPOSITE.But multi-layer compound structure significantly increases the complexity of structure, too increase material and cost simultaneously, practical engineering application is additionally subjected to the restriction of space length.Another kind of method is to place sound-absorbing material at the microperforated panel back side, but the sound-absorbing material increased can bring the secondary pollution of structure.Having is exactly reduce penetration hole diameter further again, the theory according to Mr. Ma Dayou, when the penetration hole diameter of microperforated panel is less than 0.1 millimeter, is expected to reach the band limit of porous plate acoustic adsorption device.But Conventional machining methods cannot realize the processing of ultramicropore aperture microperforated panel, the such as laser boring of other processing methods, because of the increase of punch density, production cost also can be greatly increased, and is not suitable for batch production.
Summary of the invention
(1) to solve the technical problem that
It is an object of the invention to provide the sound-absorbing composite board of a kind of wider acoustically effective, simple in construction, it is easy to processing.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention provides a kind of composite resonant sound absorption structure, including: base plate, sidewall and cover plate, described cover plate is arranged with described base plate relative spacing；Described sidewall respectively with described base plate and cover plate compact siro spinning technology, formed sound absorption the back of the body chamber；Described cover plate is provided with multiple micro-sound-absorbing hole and multiple composite sound absorbing hole；Each described composite sound absorbing hole is provided with a described sound absorption diaphragm.
Further, described cover plate is made up of metal material or nonmetallic materials.
Further, described micro-sound-absorbing hole is circular port, square opening, diamond hole, hex hole, fish scale shape hole, slotted eye, slit pore or irregularly-shaped hole.
Further, described sound absorption diaphragm is pasted onto the one side of described cover plate, covers described composite sound absorbing hole or described sound absorption diaphragm mutually bonding with the hole wall in described composite sound absorbing hole.
Further, described sound absorption diaphragm is perforation rete or rete of not boring a hole.
Further, described sound absorption diaphragm is made up of plastic material, textile material, sound absorption paper, non-woven fabrics or artificial leather.
Further, described cover plate is multilamellar, and the gap successively of cover plate described in multilamellar is arranged.
Further described sidewall is made up of metal material or nonmetallic materials.
Further, described base plate is made up of elastomeric material or rigid material.
Further, this composite resonant sound absorption structure also includes demarcation strip；The inwall of described demarcation strip and described cover plate, base plate and/or sidewall fits tightly, and described sound absorption back of the body chamber is separated into multiple independent absorption chamber；Each described absorption chamber connects with described micro-sound-absorbing hole and/or composite sound absorbing hole.
(3) beneficial effect
Composite resonant sound absorption structure provided by the invention, on the cover board arranges multiple composite sound absorbing hole, composite sound absorbing hole attaches sound absorption diaphragm, has widened the wide band sound absorption of composite resonant sound absorption structure.This composite resonant sound absorption structure is prone to processing, and cheap, easy for installation, acoustically effective is good.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of the embodiment of the present invention 1；
Fig. 2 is the sectional view of the embodiment of the present invention 2；
Fig. 3 is the embodiment design sketch curve chart of the embodiment of the present invention 1.
In figure, 1: cover plate；2: sidewall；3: base plate；4: sound absorption diaphragm；5: demarcation strip；6: absorption chamber；11: micro-sound-absorbing hole；12: composite sound absorbing hole.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following instance is used for illustrating the present invention, but is not limited to the scope of the present invention.
Embodiment 1:
With reference to shown in Fig. 1, composite resonant sound absorption structure, including base plate 3, sidewall 2 and cover plate 1, cover plate 1 is arranged with base plate 3 relative spacing, sidewall 2 respectively with base plate 3 and cover plate 1 compact siro spinning technology, form sound absorption back of the body chamber.The degree of depth in sound absorption back of the body chamber is 5～80mm, it is preferable that 5mm, 10mm, 15mm, 20mm, 50mm or 80mm.The cross section of sidewall 2 is enclosed construction, it is preferable that in " O ", " mouth " or sphere of movements for the elephants shape structure.With reference to shown in Fig. 1, base plate 3 and the parallel setting of cover plate 1, sidewall 2 and base plate 3, cover plate 1 are perpendicular, the two ends of sidewall 2 respectively with base plate 3 and cover plate compact siro spinning technology, form one or more sound absorption back of the body chamber.Cover plate 1 is provided with multiple micro-sound-absorbing hole 11 and multiple composite sound absorbing hole 12.Each composite sound absorbing hole 12 is provided with a sound absorption diaphragm 4.Sound absorption diaphragm 4 and cover plate 1 compact siro spinning technology, cover composite sound absorbing hole 12, it is to avoid sound wave passes from the space formed between sound absorption diaphragm 4 and cover plate 1 completely.Preferably, sound absorption diaphragm 4 is pasted onto the one side of cover plate 1, covers composite sound absorbing hole 12；Or sound absorption diaphragm 4 is mutually bonding with the hole wall in composite sound absorbing hole 12.
It should be noted that the size in multiple composite sound absorbing holes 12 can be equal, it is also possible to be not completely equivalent；Multiple composite sound absorbing holes 12 can be evenly arranged on cover plate 1, it is also possible to is randomly arranged in cover plate 1.
Preferably, cover plate 1 and sidewall 2 are made by metal material or nonmetallic materials.Base plate 3 is made up of rigid material or elastomeric material, and elastomeric material preferably employs elastomeric material and makes.
Further, micro-sound-absorbing hole 11 is circular port, square opening, diamond hole, hex hole, fish scale shape hole, slotted eye, slit pore or irregularly-shaped hole.The diameter of micro-sound-absorbing hole 11 is 0.1～3mm, it is preferably 0.1mm, 0.5mm, 0.8mm, 1mm or 3mm, namely cover plate 1 adopts perforated plate, microperforated panel or Microfracture plate, the thickness of slab of cover plate 1 to be 0.5～10mm, it is preferred to use 0.5mm, 0.8mm, 1mm, 2mm, 3mm, 4mm, 5mm or 10mm.
It should be noted that in process of construction, it is possible to using the solid metope of building as base plate 3 and sidewall 2, composition sound absorption back of the body chamber together with cover plate 1.
Further, sound absorption diaphragm 4 selects the thin film that plastic material, textile material, sound absorption paper, non-woven fabrics or artificial leather are made.In order to play acoustically effective better, sound absorption diaphragm 4 is provided with multiple micro-open-work, makes sound absorption diaphragm 4 form perforation rete.Sound absorption diaphragm 4 can also be rete of not boring a hole.Wherein, plastic material can be polythene material, polypropylene material, pvc material or polyester material etc..
Further, cover plate 1 is multilamellar, and multilamellar cover plate 1 gap successively is arranged, has the gap of 2～50mm, it is preferable that take 2mm, 5mm, 10mm, 20mm, 30mm or 50mm between adjacent two-layer cover plate.Use multilamellar cover plate 1 to filter sound wave, improve acoustically effective.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, is different in that: with reference to shown in Fig. 3, composite resonant sound absorption structure also includes demarcation strip 5；The inwall of demarcation strip 5 and cover plate 1, base plate 3 and/or sidewall 2 fits tightly, and sound absorption back of the body chamber is separated into multiple independent absorption chamber 6；Each absorption chamber 6 connects with micro-sound-absorbing hole 11 and/or composite sound absorbing hole 12.Sound absorption is carried on the back chamber and is separated into multiple absorption chamber 6 by demarcation strip 5, and the degree of depth of multiple absorption chambers 6 is incomplete same, and the degree of depth of absorption chamber 6 refers to medial surface and the innermost vertical height of absorption chamber of cover plate 1.The quantity of demarcation strip 5 is multiple, and the shape of demarcation strip 5 can be varied, and making absorption chamber 6 is cuboid, cylinder, vertebral body or irregular body etc..Sound wave is flowed into absorption chamber 6 from micro-sound-absorbing hole 11 and/or composite sound absorbing hole 12, produces resonance, make sound wave be absorbed by absorption chamber 6 in absorption chamber 6.
With reference to shown in Fig. 3, Fig. 3 is a kind of with reference to the composite resonant sound absorption structure made by embodiment 1, and the trial in the sound absorption back of the body chamber of this sound absorption structure is 50mm, and wherein B curve is the acoustically effective of the composite resonant sound absorption structure of the present invention；C curve is the effect curve of the sound absorption structure of prior art.It can be seen that the acoustically effective of the composite resonant sound absorption structure of the present invention is better than prior art.
The present invention, when not increasing sound absorption structure volume, on the cover board arranges multiple composite sound absorbing hole, and composite sound absorbing hole attaches sound absorption diaphragm, and sound absorption diaphragm has resonant interaction, has widened the wide band sound absorption of composite resonant sound absorption structure.This composite resonant sound absorption structure is prone to processing, and cheap, easy for installation, acoustically effective is good.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a composite resonant sound absorption structure, it is characterised in that including: base plate, sidewall and cover plate, described cover plate is arranged with described base plate relative spacing；Described sidewall respectively with described base plate and cover plate compact siro spinning technology, formed sound absorption the back of the body chamber；Described cover plate is provided with multiple micro-sound-absorbing hole and multiple composite sound absorbing hole；Each described composite sound absorbing hole is provided with a described sound absorption diaphragm.
2. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described cover plate is made up of metal material or nonmetallic materials.
3. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described micro-sound-absorbing hole is circular port, square opening, diamond hole, hex hole, fish scale shape hole, slotted eye, slit pore or irregularly-shaped hole.
4. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described sound absorption diaphragm is pasted onto the one side of described cover plate, covers described composite sound absorbing hole or described sound absorption diaphragm mutually bonding with the hole wall in described composite sound absorbing hole.
5. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described sound absorption diaphragm is perforation rete or rete of not boring a hole.
6. composite resonant sound absorption structure as claimed in claim 5, it is characterised in that described sound absorption diaphragm is made up of plastic material, textile material, sound absorption paper, non-woven fabrics or artificial leather.
7. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described cover plate is multilamellar, and the gap successively of cover plate described in multilamellar is arranged.
8. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described sidewall is made up of metal material or nonmetallic materials.
9. composite resonant sound absorption structure as claimed in claim 1, it is characterised in that described base plate is made up of elastomeric material or rigid material.
10. the composite resonant sound absorption structure as described in any one of claim 1 to 9, it is characterised in that this composite resonant sound absorption structure also includes demarcation strip；The inwall of described demarcation strip and described cover plate, base plate and/or sidewall fits tightly, and described sound absorption back of the body chamber is separated into multiple independent absorption chamber；Each described absorption chamber connects with described micro-sound-absorbing hole and/or composite sound absorbing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734866.5A CN105719638A (en) | 2014-12-04 | 2014-12-04 | Composite resonance sound absorption structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410734866.5A CN105719638A (en) | 2014-12-04 | 2014-12-04 | Composite resonance sound absorption structure |
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| CN105719638A true CN105719638A (en) | 2016-06-29 |
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| CN201410734866.5A Pending CN105719638A (en) | 2014-12-04 | 2014-12-04 | Composite resonance sound absorption structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237413A (en) * | 2017-06-07 | 2017-10-10 | 浙江农林大学 | A kind of programmable combination hole sound absorbing material |
| CN108909083A (en) * | 2018-08-28 | 2018-11-30 | 华南理工大学 | A kind of sound absorption sandwich plate of the back chamber containing labyrinth |
| CN109584855A (en) * | 2019-01-11 | 2019-04-05 | 南昌航空大学 | Honeycomb-microperforated panel composite structural design method of adjustable sound absorption frequency |
| CN109581848A (en) * | 2017-09-28 | 2019-04-05 | 富士施乐株式会社 | Denoising structure and image forming apparatus |
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| EP0405581A1 (en) * | 1989-06-30 | 1991-01-02 | Nitto Boseki Co., Ltd. | Sound absorber |
| JPH09283257A (en) * | 1996-04-18 | 1997-10-31 | Nippon Paint Co Ltd | Spherical gap switch provided with noise reducing function |
| ITMI971702A1 (en) * | 1997-07-18 | 1999-01-18 | Claudio Barabaschi | SOUND ABSORPTION SOUND ABSORBING PANEL FOR RESONANCE AND PROCEDURE FOR ADJUSTING THE RESONANCE FREQUENCY OF THE SAME |
| EP1950357A1 (en) * | 2007-01-29 | 2008-07-30 | Akustik & Raum AG | Acoustic elements |
| JP2009139556A (en) * | 2007-12-05 | 2009-06-25 | Yamaha Corp | Sound absorbing body |
| CN201477875U (en) * | 2009-02-27 | 2010-05-19 | 中国科学院声学研究所 | Resonance sound-absorbing device combining tube-bundle type perforated plate sound-absorbing structure and hair crack sound-absorbing structure |
| EP2374940A2 (en) * | 2010-04-06 | 2011-10-12 | Akustik & Raum AG | Absorbent noise barriers |
| JP2011221283A (en) * | 2010-04-09 | 2011-11-04 | Nippon Steel Corp | Structural laminated steel sheet with sound absorptivity and method for manufacturing the same |
| CA2805333A1 (en) * | 2010-07-15 | 2012-01-19 | Aisin Kako Kabushiki Kaisha | Structure having sound absorption characteristic |
| CN102543061A (en) * | 2012-01-20 | 2012-07-04 | 江苏大学 | Wide band sound absorption structure of film mechanical impedance combined with micropunched plate acoustic impedance |
| CN103700366A (en) * | 2013-12-24 | 2014-04-02 | 江苏大学 | Wideband sound absorption structure combing mechanical impedance of composite resonance cavities with micropunch plates |
| US8857563B1 (en) * | 2013-07-29 | 2014-10-14 | The Boeing Company | Hybrid acoustic barrier and absorber |
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2014
- 2014-12-04 CN CN201410734866.5A patent/CN105719638A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405581A1 (en) * | 1989-06-30 | 1991-01-02 | Nitto Boseki Co., Ltd. | Sound absorber |
| JPH09283257A (en) * | 1996-04-18 | 1997-10-31 | Nippon Paint Co Ltd | Spherical gap switch provided with noise reducing function |
| ITMI971702A1 (en) * | 1997-07-18 | 1999-01-18 | Claudio Barabaschi | SOUND ABSORPTION SOUND ABSORBING PANEL FOR RESONANCE AND PROCEDURE FOR ADJUSTING THE RESONANCE FREQUENCY OF THE SAME |
| EP1950357A1 (en) * | 2007-01-29 | 2008-07-30 | Akustik & Raum AG | Acoustic elements |
| JP2009139556A (en) * | 2007-12-05 | 2009-06-25 | Yamaha Corp | Sound absorbing body |
| CN201477875U (en) * | 2009-02-27 | 2010-05-19 | 中国科学院声学研究所 | Resonance sound-absorbing device combining tube-bundle type perforated plate sound-absorbing structure and hair crack sound-absorbing structure |
| EP2374940A2 (en) * | 2010-04-06 | 2011-10-12 | Akustik & Raum AG | Absorbent noise barriers |
| JP2011221283A (en) * | 2010-04-09 | 2011-11-04 | Nippon Steel Corp | Structural laminated steel sheet with sound absorptivity and method for manufacturing the same |
| CA2805333A1 (en) * | 2010-07-15 | 2012-01-19 | Aisin Kako Kabushiki Kaisha | Structure having sound absorption characteristic |
| CN102543061A (en) * | 2012-01-20 | 2012-07-04 | 江苏大学 | Wide band sound absorption structure of film mechanical impedance combined with micropunched plate acoustic impedance |
| US8857563B1 (en) * | 2013-07-29 | 2014-10-14 | The Boeing Company | Hybrid acoustic barrier and absorber |
| CN103700366A (en) * | 2013-12-24 | 2014-04-02 | 江苏大学 | Wideband sound absorption structure combing mechanical impedance of composite resonance cavities with micropunch plates |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237413A (en) * | 2017-06-07 | 2017-10-10 | 浙江农林大学 | A kind of programmable combination hole sound absorbing material |
| CN107237413B (en) * | 2017-06-07 | 2020-11-03 | 浙江农林大学 | Designable combined hole sound absorption material |
| CN109581848A (en) * | 2017-09-28 | 2019-04-05 | 富士施乐株式会社 | Denoising structure and image forming apparatus |
| CN108909083A (en) * | 2018-08-28 | 2018-11-30 | 华南理工大学 | A kind of sound absorption sandwich plate of the back chamber containing labyrinth |
| CN108909083B (en) * | 2018-08-28 | 2023-08-18 | 华南理工大学 | Sound absorption and insulation sandwich plate containing labyrinth back cavity |
| CN109584855A (en) * | 2019-01-11 | 2019-04-05 | 南昌航空大学 | Honeycomb-microperforated panel composite structural design method of adjustable sound absorption frequency |
| CN109584855B (en) * | 2019-01-11 | 2022-11-18 | 南昌航空大学 | Honeycomb-micropunch plate composite structure design method capable of adjusting sound absorption frequency |
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Application publication date: 20160629 |
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