CN205092054U - Tube bundle perforated plate and ring spring column structure sound absorption device - Google Patents
Tube bundle perforated plate and ring spring column structure sound absorption device Download PDFInfo
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- CN205092054U CN205092054U CN201520723991.6U CN201520723991U CN205092054U CN 205092054 U CN205092054 U CN 205092054U CN 201520723991 U CN201520723991 U CN 201520723991U CN 205092054 U CN205092054 U CN 205092054U
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- perforated plate
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Abstract
The utility model discloses a tube bundle perforated plate and ring spring column structure sound absorption device, including backplate (1) and perforated plate (2) that sets gradually, polyolefin elastomer layer or the preparation of polycarbonate layer are adopted in backplate (1), the preparation of photosensitive resin layer is adopted in perforated plate (2), perforated plate (2) are gone up the array and are provided with through -hole (3), every through -hole (3) comprise mutually sharp through -hole portion (21) and spiral through -hole portion (32), surface that perforated plate (2) have spiral through -hole portion (32) one side with the surface of backplate (1) is connected. Sound absorption device increase acoustic absorptivity in the reinforcing, the active absorption of low -frequency noise, improves high frequency sound absorption effect simultaneously, widens the sound absorption frequency band to reach the mesh that reduces perforated plate sound absorbing structure.
Description
Technical field
The utility model relates to a kind of resonance sound-absorbing device, and particularly both a kind of tube bundle perforated plate and spring ring texture combine the sound absorber utilizing lumen coupled resonance and interbank coupled resonance.
Background technology
The sound absorption material and structure kind applied in noise control engineering is a lot, is broadly divided into porous sound-absorbing material and resonance sound-absorbing material by its sound absorption principle.Such as foamed aluminium and foam copper etc. all belong to porous sound-absorbing material, and resonance sound-absorbing structure for sheet, film resonance sound-absorbing structure, perforated plate resonance sound-absorbing all belong to resonance sound-absorbing material.And in recent years about the research of noise deepens continuously, the more wide field by the application extension of resonance sound-absorbing structure.
Although perforation board resonance sound absorption structure and microperforated panel soundabsorbing construction compared with porous sound-absorbing material sound absorption characteristics, flow resistance, corrosion-resistant etc. in there is many advantageous feature, but still cannot meet the actual needs of some Noise measarement, particularly be subject to the occasion of strict restriction in sound absorption space under, control low-frequency noise will have too many difficulties to cope with, because for general resonance sound-absorbing structure, strengthen its Low Frequency Sound Absorption, just significantly must increase cavity depth, and this cannot accomplish often in Practical Project.
Chinese Patent Application No. is ZL00100641.X disclosed " tube bundle type perforated-plate resonance sound-absorbing device ", and its structure utilizes the sound absorption principle of lumen coupled resonance, increases its acoustical absorption coefficient and acoustic resistance, improves effect of low-frequency sound absorption.But its sound sucting band is confined to medium and low frequency, sound sucting band is wide still not, the length of tube bank is most important for resonant sound-absorbing tube bundle type perforated-plate structure, if pipe range is too short, can affect very large on its sound absorbing capabilities, significantly reduce sound absorbing capabilities, ensure that good sound absorbing capabilities must use longer tube bank if therefore want, the back cavity degree of depth also can correspondingly increase, be unfavorable for promoting the use of of this device, and the tube bundle designs of wire is single, the sound absorption characteristics of lumen coupled resonance and the length of tube bank can not be made full use of to the contribution of sound energy consumption.
Chinese Patent Application No. is 200910235725.8 disclosed " a kind of microperforated panels with resonance sound-absorbing structure ", its mechanism is changed by microperforated panel cavity behind to change acoustical absorption coefficient, but do not have the device of ACTIVE CONTROL to change to realize cavity with the change of frequency, so be unfavorable for its development from now on, and the thickness simplification of rigid plane, fully can not improve the sound absorbing capabilities of this device.
For a long time, acoustic investigation personnel always actively find and research and development small volume, the novel sound absorption structure that can keep good sound absorption effect in broadband.For this reason, propose a kind of sound absorber utilizing lumen coupled resonance and interbank coupled resonance had around structure tube bundle perforated plate resonance sound-absorbing device and ring spring combined around both structures, to realize the object improving acoustical absorption coefficient, widen sound sucting band.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of tube bundle type perforated-plate and spring ring texture sound absorber, increase acoustical absorption coefficient, in enhancing, effective absorption of low-frequency noise, improve high frequency acoustically effective simultaneously, widen sound sucting band, and reach the object reducing sound absorbent perforated structure.
The purpose of this utility model is achieved through the following technical solutions: a kind of tube bundle type perforated-plate and spring ring texture sound absorber, comprise the backboard and perforated plate that set gradually, described backboard adopts polyolefin elastomer layer or layer of polycarbonate to make, described perforated plate adopts photosensitive resin layer to make, on described perforated plate, array is provided with through hole, described each through hole is made up of phase straight line pylone portion and spiral through-hole section, and the surface that described perforated plate has spiral through-hole section side is connected with the surface of described backboard.The Main Function of perforated plate is vibration and noise reducing; Backboard plays booster action, makes whole sound absorber have certain mechanical strength, simultaneously for being connected with fabricated section.
The thickness of above-mentioned backboard is 5mm ~ 10mm.
The thickness of above-mentioned perforated plate is 40mm ~ 60mm.
Preferably, the connected mode between described backboard and described perforated plate is integrated hot-forming.
Optionally, the bonding and one cold briquetting by bonding agent of described backboard and described perforated plate, preferably, described bonding agent is acryl resin.
Preferably, described backboard adopts the polyolefin elastomer of thickness 10mm to make, and described perforated plate employing thickness is that the photosensitive resin of 50mm makes.
Compared with prior art, the beneficial effects of the utility model: in the utility model perforated plate, each through hole is adopted and is made up of phase straight line pylone portion and spiral through-hole section, add the volume of through hole cavity tube bank, play abundant sound energy consumption object, utilize coupling resonance sound-absorbing principle, and Pipe bundle structure etc. is to the modulating characteristic of resonance absorbing peak and sound sucting band, increase acoustic resistance and acoustic mass, strengthening sound absorption, modulation resonance absorbing peak and sound sucting band, its sound sucting band than traditional perforation board resonance sound absorption structure and wire tube bundle perforated plate resonance sound-absorbing structure structure wide, thus increase acoustical absorption coefficient, in enhancing, effective absorption of low-frequency noise, improve high frequency acoustically effective simultaneously, widen sound sucting band, and reach the dark size in the resonant cavity chamber that reduces sound absorbent perforated structure and tube bundle perforated plate resonance sound-absorbing device and keep the object of higher broadband sound absorbing capabilities.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of through hole described in the utility model;
Description of reference numerals: 1, backboard; 2, perforated plate; 3, through hole; 31, straight line pylone portion; 32, spiral through-hole section.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, utility model is described further:
A kind of tube bundle type perforated-plate and spring ring texture sound absorber, comprise the backboard 1 and perforated plate 2 that set gradually, described backboard 1 adopts polyolefin elastomer layer or layer of polycarbonate to make, described perforated plate 2 adopts photosensitive resin layer to make, on described perforated plate 2, array is provided with through hole 3, described each through hole 3 is made up of phase straight line pylone portion 31 and spiral through-hole section 32, and the surface that described perforated plate 2 has spiral through-hole section 32 side is connected with the surface of described backboard 1.The thickness of described backboard 1 is 5mm ~ 10mm, and the thickness of described perforated plate 2 is 40mm ~ 60mm.Backboard 1 play booster action with for being connected with fabricated section, as being close to (body of a motor car, rear luggage-box of automobile, automobile engine cover etc.) on the steel plate wall of vehicle body.
In the present embodiment, preferably, described backboard 1 adopts the polyolefin elastomer of thickness 10mm to make, and described perforated plate 2 adopts photosensitive resin to be made by 3D printing shaping, and thickness is 50mm.
In the present embodiment, the diameter of described through hole 3 is 2mm ~ 4mm, and the pitch of wherein said spiral through-hole section 32 is 4mm ~ 6mm, and central diameter is 8mm ~ 12mm.
In the present embodiment, the connected mode between described backboard 1 and described perforated plate 2 is integrated hot-forming.
As the possibility of the present embodiment, the bonding and one cold briquetting by bonding agent of described backboard 1 and described perforated plate 2, preferably, described bonding agent is acryl resin.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. a tube bundle type perforated-plate and spring ring texture sound absorber, it is characterized in that: comprise the backboard (1) and perforated plate (2) that set gradually, described backboard (1) adopts polyolefin elastomer layer or layer of polycarbonate to make, described perforated plate (2) adopts photosensitive resin layer to make, the upper array of described perforated plate (2) is provided with through hole (3), each through hole (3) is made up of straight line pylone portion (31) and spiral through-hole section (32), and the surface that described perforated plate (2) has spiral through-hole section (32) side is connected with the surface of described backboard (1).
2. a kind of tube bundle type perforated-plate as claimed in claim 1 and spring ring texture sound absorber, is characterized in that: the thickness of described backboard (1) is 5mm ~ 10mm.
3. a kind of tube bundle type perforated-plate as claimed in claim 1 and spring ring texture sound absorber, is characterized in that: the thickness of described perforated plate (2) is 40mm ~ 60mm.
4. a kind of tube bundle type perforated-plate as claimed in claim 1 and spring ring texture sound absorber, is characterized in that: the connected mode between described backboard (1) and described perforated plate (2) is integrated hot-forming.
5. a kind of tube bundle type perforated-plate as claimed in claim 1 and spring ring texture sound absorber, is characterized in that: described backboard (1) and described perforated plate (2) by bonding agent bonding and one cold briquetting.
6. a kind of tube bundle type perforated-plate as claimed in claim 5 and spring ring texture sound absorber, is characterized in that: described bonding agent is acryl resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723991.6U CN205092054U (en) | 2015-09-18 | 2015-09-18 | Tube bundle perforated plate and ring spring column structure sound absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723991.6U CN205092054U (en) | 2015-09-18 | 2015-09-18 | Tube bundle perforated plate and ring spring column structure sound absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205092054U true CN205092054U (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520723991.6U Expired - Fee Related CN205092054U (en) | 2015-09-18 | 2015-09-18 | Tube bundle perforated plate and ring spring column structure sound absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205092054U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118497A (en) * | 2015-09-18 | 2015-12-02 | 贵州大学 | Tube-bundle perforated panel and spring cyclic structure sound absorption apparatus |
| CN110491361A (en) * | 2019-07-23 | 2019-11-22 | 浙江大学 | A kind of low frequency absorption device suitable for becoming power distribution station |
-
2015
- 2015-09-18 CN CN201520723991.6U patent/CN205092054U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118497A (en) * | 2015-09-18 | 2015-12-02 | 贵州大学 | Tube-bundle perforated panel and spring cyclic structure sound absorption apparatus |
| CN110491361A (en) * | 2019-07-23 | 2019-11-22 | 浙江大学 | A kind of low frequency absorption device suitable for becoming power distribution station |
| CN110491361B (en) * | 2019-07-23 | 2021-08-24 | 浙江大学 | Low-frequency sound absorption device suitable for transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160316 Termination date: 20210918 |