CN203773937U - Sound insulating and absorbing honeycomb panel - Google Patents
Sound insulating and absorbing honeycomb panel Download PDFInfo
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- CN203773937U CN203773937U CN201420061562.2U CN201420061562U CN203773937U CN 203773937 U CN203773937 U CN 203773937U CN 201420061562 U CN201420061562 U CN 201420061562U CN 203773937 U CN203773937 U CN 203773937U
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- honeybee
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Abstract
The utility model relates to a sound insulating and absorbing honeycomb panel, belonging to the technical field of sheet materials. The sound insulating and absorbing honeycomb plate comprises a base plate, a top plate and a core plate, wherein the top plate is orientated to one side of a noise source, the core plate includes a honeycomb structure and comprises honeycomb cylinders, and the top plate is a perforated plate which includes through holes. The sound insulating and absorbing honeycomb panel is excellent in sound insulation and absorption effects, and solves the problem that a present honeycomb panel is low in sound insulation effect.
Description
Technical field
The utility model relates to sheet material technical field, particularly a kind of sound insulation sound absorption cellular board.
Background technology
Sheet material is widely used in productive life, in the situation that guaranteeing load-bearing rigidity, cellular board is a kind of conventional lightweight sheet material, at industrial circles such as building, automobiles, be widely used, while improving constantly along with people's living standard, the requirement of corresponding policies and regulations, pursuit for comfortableness requires also more and more higher, this has just proposed more requirement to the sound insulation sound absorbing capabilities of sheet material, existing cellular board has certain heat insulating and sound insulating effect, but owing to generally not thering is sound absorption, thereby can cause its defening effect poor.
Notification number is that the solid cellular board of announcing in the Chinese patent document of 101619801B is a kind of common cellular board, this solid cellular board comprises base plate and top board, between top board and base plate, be provided with the central layer that is honeycomb, central layer comprises a plurality of honeybee cylinders, on the sidewall facade of the honeybee cylinder of central layer, offer hole and adjacent honeybee cylinder is connected, in each honeybee cylinder, be filled with polyfoam.This polyfoam has the effect of sound absorption.Compare with the cellular board of hollow-core construction, although this solid cellular board has certain acoustically effective, its acoustically effective and defening effect are still not good.
Summary of the invention
The purpose of this utility model is to provide a kind of sound insulation sound absorption cellular board, to solve the poor problem of defening effect of existing cellular board.
To achieve these goals, the utility model adopts following technical scheme: sound insulation sound absorption cellular board, comprise base plate, for the top board towards noise source one side be the central layer of honeycomb, and central layer comprises honeybee cylinder, described top board is perforated plate, has perforation on perforated plate.
Perforation is positioned at the honeybee cylinder port of central layer.
The corresponding perforation in each honeybee cylinder port of central layer.
The pore size of each perforation is different.
On the sidewall facade of the honeybee cylinder of central layer, offer for connecting the hole of adjacent honeybee cylinder.
In described each honeybee cylinder, be filled with acoustic absorbant.
Described acoustic absorbant is foam or sponge material.
In described base plate and top board, only top board is perforated plate.
The beneficial effects of the utility model: because top board is provided with perforation, noise can be absorbed in the honeybee cylinder of central layer by perforation, can play good sound absorption.The utility model has solved the poor problem of defening effect of existing cellular board, sound insulation of the present utility model sound absorption cellular board have advantages of sound insulation and acoustically effective good.
Further, the side wall ends place that is located at adjacent honeybee cylinder with perforation compares, and when perforation, is located at perforation while being positioned at the honeybee cylinder port of central layer, and perforation can form heimholtz resonator with honeybee cylinder, can play good sound absorption, and then can improve sound insulation acoustically effective.
Further, when perforated plate only includes a perforation, can only form a heimholtz resonator, the sound sucting band of single heimholtz resonator is extremely narrow; When the equal corresponding perforation in each honeybee cylinder port of central layer, can form a plurality of heimholtz resonators, can be used for absorbing low-frequency noise, significantly improve acoustically effective, and then improved defening effect.
Further, adopt identical pore size to compare with each perforation, when the pore size of each perforation is different, the frequency of resonance sound-absorbing is different, can widen this sound insulation sound absorption frequency of cellular board that absorbs sound, thereby reach better sound absorption efficiency.
Further, on sidewall facade due to the honeybee cylinder of central layer, offer hole, adjacent honeybee cylinder connects together, can make adjacent heimholtz resonator form parallel connection, integral body forms perforation board resonance sound absorption structure (heimholtz resonator in parallel), the resonant frequency of perforation board resonance sound absorption structure equals the resonant frequency of single equivalent heimholtz resonator, thereby, can further improve acoustically effective and defening effect.
Further, acoustic absorbant can further improve acoustically effective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment 1 of sound insulation sound absorption cellular board of the present utility model;
Fig. 2 is the structural representation of Helmholtz resonator;
Fig. 3 is the structural representation of perforation board resonance sound absorption structure.
Embodiment
The embodiment 1 of sound insulation sound absorption cellular board of the present utility model, as shown in Figure 1: this sound insulation sound absorption cellular board comprises central layer 1, base plate 2, top board 3.Central layer 1 is between base plate 2 and top board 3.Central layer 1 is honeycomb, and central layer 1 comprises honeybee cylinder 11.Top board 3 is perforated plate, has perforation 31 on perforated plate.
In the present embodiment, in top board 3 and base plate 2, only top board 3 is perforated plate, and the bottom of honeybee cylinder 11 is sealed by base plate, and during use, top board should be towards noise source one side.In other embodiments, top board and base plate can also be perforated plate.
In the present embodiment, perforation 31 is positioned at the honeybee cylinder port of central layer, and this port is upper port.The corresponding perforation 31 in each honeybee cylinder 11 port of central layer 1.Each perforation 31 honeybee cylinder 11 corresponding with it has formed a Helmholtz resonator.
As shown in Figure 2, the principle of work of heimholtz resonator: the cavity 41 of sealing connects a short tube 42 becomes heimholtz resonator, the principle of work of this Helmholtz resonator is for being similar to dynamic vibration absorber, and cavity 41 is equivalent to spring, and air in short tube 42 is equivalent to quality.Its resonant frequency approximate treatment according to the following formula in engineering:
Wherein, the volume that V is cavity; L is the length of short tube; D is the aperture of short tube; C is THE VELOCITY OF SOUND IN AIR; S is the sectional area of short tube.
The sound sucting band of single heimholtz resonator is extremely narrow, the noise that is generally used for intake and exhaust, piping system is controlled, but nacelle sound absorption and insulation still can utilize its principle, the combination of perforated plate and central layer can be considered the combination of a plurality of heimholtz resonators, can be used for absorbing low-frequency noise.
In this enforcement embodiment, the pore size of each perforation is different, and the frequency of resonance sound-absorbing is different, can be according to the pore size of each perforation of resonance sound-absorbing principle adjusted design.
In the present embodiment, on the sidewall facade of the honeybee cylinder 11 of central layer, offer for connecting the hole 12 of adjacent honeybee cylinder, can make adjacent Helmholtz resonator form parallel connection, the whole perforation board resonance sound absorption structure that forms.
As shown in Figure 3, the principle of perforation board resonance sound absorption structure: perforation board resonance sound absorption structure is generally that of rigid plane front a distance installation has very lacunary plate.If the distribution uniform in hole, and perforated plate 51 itself has certain thickness, perforated plate 51 can be considered heimholtz resonator in parallel together with the space after plate.Perforation is equivalent to acoustic mass, and the space after perforated plate is divided into many little spaces by hole, and each aperture occupies a little space, forms equivalent acoustic capacitance.S
ifor the sectional area of each aperture, thickness of slab is l
0, distance between plates is D, the number of holes in unit area is n
0, the resonant frequency of perforation board resonance sound absorption structure equals the resonant frequency of single equivalent heimholtz resonator.The resonant frequency of individual layer perforated plate can be calculated as follows:
Wherein:
σ=S
in
0percentage of perforation for perforated plate;
for perforation effective length;
Perforation board resonance sound absorption structure is that sheet metal is made, and therefore has the features such as heatproof, water resistant, anti-gas shock, and can be used as the protecting wire net of fiber-like acoustic absorbant, is convenient to the installation of acoustic absorbant and prevents that fiber from dispersing.
In the present embodiment, in each honeybee cylinder, be filled with acoustic absorbant, this acoustic absorbant is foam.In other embodiments, acoustic absorbant can also be sponge material.
In other embodiments, the port of each honeybee cylinder can also not have perforation entirely; Or can also be to there be two or more perforation the port of each honeybee cylinder.
In other embodiments, the pore size of each perforation can be all identical, also can be entirely not identical.
In other embodiments, perforation can also be positioned at the end of sidewall of the adjacent honeybee cylinder of central layer; Or the aperture of perforation is larger, and a perforation can corresponding two or more honeybee cylinders.
In other embodiments, can also save acoustic absorbant, honeybee cylinder is hollow-core construction.
In other embodiments, can also save the cavity offering on the sidewall facade of honeybee cylinder, between each honeybee cylinder, not be communicated with.
In other embodiments, the perforation on top board can also only have one.
Claims (8)
1. sound insulation sound absorption cellular board, comprises base plate, for the top board towards noise source one side be the central layer of honeycomb, and central layer comprises honeybee cylinder, it is characterized in that: described top board is perforated plate, has perforation on perforated plate.
2. sound insulation sound absorption cellular board according to claim 1, is characterized in that: perforation is positioned at the honeybee cylinder port of central layer.
3. sound insulation sound absorption cellular board according to claim 2, is characterized in that: the corresponding perforation in each honeybee cylinder port of central layer.
4. sound insulation sound absorption cellular board according to claim 3, is characterized in that: pore size of each perforation is different.
5. according to the sound insulation sound absorption cellular board described in any one in claim 1-4, it is characterized in that: on the sidewall facade of the honeybee cylinder of central layer, offer for connecting the hole of adjacent honeybee cylinder.
6. sound insulation sound absorption cellular board according to claim 5, is characterized in that: in described each honeybee cylinder, be filled with acoustic absorbant.
7. sound insulation sound absorption cellular board according to claim 6, is characterized in that: described acoustic absorbant is foam or sponge material.
8. sound insulation sound absorption cellular board according to claim 1, is characterized in that: in described base plate and top board, only top board is perforated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061562.2U CN203773937U (en) | 2014-02-10 | 2014-02-10 | Sound insulating and absorbing honeycomb panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061562.2U CN203773937U (en) | 2014-02-10 | 2014-02-10 | Sound insulating and absorbing honeycomb panel |
Publications (1)
| Publication Number | Publication Date |
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| CN203773937U true CN203773937U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420061562.2U Expired - Fee Related CN203773937U (en) | 2014-02-10 | 2014-02-10 | Sound insulating and absorbing honeycomb panel |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105458262A (en) * | 2016-02-01 | 2016-04-06 | 哈尔滨工程大学 | Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology |
| CN106004710A (en) * | 2016-08-02 | 2016-10-12 | 常熟市嘉淀纺织有限公司 | Waterproof sound-proof cotton |
| CN107407205A (en) * | 2015-02-18 | 2017-11-28 | 米德尔里弗飞机系统公司 | The method that sound is lined with and formation sound is lining into mouth |
| CN107610688A (en) * | 2017-09-05 | 2018-01-19 | 上海声望声学科技股份有限公司 | A kind of compound sound insulating structure of lumen |
| CN108725807A (en) * | 2017-04-25 | 2018-11-02 | 空中客车运营简化股份公司 | acoustic treatment panel and aircraft |
| CN109641416A (en) * | 2016-08-19 | 2019-04-16 | 3M创新有限公司 | Abatvoix including the core being made of the unit connected, it is wherein some with opening in cell-wall |
| CN109693437A (en) * | 2017-10-24 | 2019-04-30 | 现代自动车株式会社 | Composite plate for absorbing sound and insulating against sound |
| CN110091555A (en) * | 2019-05-03 | 2019-08-06 | 芜湖聚创新材料有限责任公司 | A kind of double honeycomb Cellular structure composite plates of sound insulation |
| CN111048059A (en) * | 2019-12-09 | 2020-04-21 | 南京航空航天大学 | Micro-perforated plate spider web honeycomb sandwich sound absorption bearing composite structure |
| CN111312202A (en) * | 2018-12-11 | 2020-06-19 | 上海汽车集团股份有限公司 | Silencing equipment |
| WO2022016684A1 (en) * | 2020-07-24 | 2022-01-27 | 株洲国创轨道科技有限公司 | Sound absorbing panel |
| RU2818879C1 (en) * | 2023-12-21 | 2024-05-06 | Акционерное общество "АвтоВАЗ" | Sound energy absorber |
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2014
- 2014-02-10 CN CN201420061562.2U patent/CN203773937U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407205A (en) * | 2015-02-18 | 2017-11-28 | 米德尔里弗飞机系统公司 | The method that sound is lined with and formation sound is lining into mouth |
| US10563578B2 (en) | 2015-02-18 | 2020-02-18 | Mra Systems, Llc | Acoustic liners and method of shaping an inlet of an acoustic liner |
| CN105458262A (en) * | 2016-02-01 | 2016-04-06 | 哈尔滨工程大学 | Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology |
| CN106004710A (en) * | 2016-08-02 | 2016-10-12 | 常熟市嘉淀纺织有限公司 | Waterproof sound-proof cotton |
| JP2019528195A (en) * | 2016-08-19 | 2019-10-10 | スリーエム イノベイティブ プロパティズ カンパニー | A sound-absorbing panel comprising a core consisting of connected cells in which some of the cell walls have openings |
| CN109641416A (en) * | 2016-08-19 | 2019-04-16 | 3M创新有限公司 | Abatvoix including the core being made of the unit connected, it is wherein some with opening in cell-wall |
| CN108725807A (en) * | 2017-04-25 | 2018-11-02 | 空中客车运营简化股份公司 | acoustic treatment panel and aircraft |
| CN108725807B (en) * | 2017-04-25 | 2021-05-04 | 空中客车运营简化股份公司 | Acoustic treatment panel and aircraft |
| CN107610688A (en) * | 2017-09-05 | 2018-01-19 | 上海声望声学科技股份有限公司 | A kind of compound sound insulating structure of lumen |
| CN107610688B (en) * | 2017-09-05 | 2024-04-26 | 同济大学 | Cavity tube composite sound insulation structure |
| CN109693437A (en) * | 2017-10-24 | 2019-04-30 | 现代自动车株式会社 | Composite plate for absorbing sound and insulating against sound |
| CN109693437B (en) * | 2017-10-24 | 2022-11-04 | 现代自动车株式会社 | Composite panel for sound absorption and sound insulation |
| CN111312202A (en) * | 2018-12-11 | 2020-06-19 | 上海汽车集团股份有限公司 | Silencing equipment |
| CN111312202B (en) * | 2018-12-11 | 2024-03-08 | 上海汽车集团股份有限公司 | Sound-deadening equipment |
| CN110091555A (en) * | 2019-05-03 | 2019-08-06 | 芜湖聚创新材料有限责任公司 | A kind of double honeycomb Cellular structure composite plates of sound insulation |
| CN111048059A (en) * | 2019-12-09 | 2020-04-21 | 南京航空航天大学 | Micro-perforated plate spider web honeycomb sandwich sound absorption bearing composite structure |
| WO2022016684A1 (en) * | 2020-07-24 | 2022-01-27 | 株洲国创轨道科技有限公司 | Sound absorbing panel |
| RU2818879C1 (en) * | 2023-12-21 | 2024-05-06 | Акционерное общество "АвтоВАЗ" | Sound energy absorber |
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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 |
Granted publication date: 20140813 Termination date: 20190210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |