CN210896602U - Cavity sound absorption structure of sound absorption protective surface of double-sided metal perforated plate in acoustic laboratory - Google Patents
Cavity sound absorption structure of sound absorption protective surface of double-sided metal perforated plate in acoustic laboratory Download PDFInfo
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- CN210896602U CN210896602U CN201921283004.XU CN201921283004U CN210896602U CN 210896602 U CN210896602 U CN 210896602U CN 201921283004 U CN201921283004 U CN 201921283004U CN 210896602 U CN210896602 U CN 210896602U
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Abstract
The utility model discloses a cavity sound-absorbing structure of two-sided metal perforated plate sound absorption visor in acoustics laboratory, including two-sided metal perforation sound absorption visor board, cavity and current rigid wall. The double-sided metal perforated sound absorption protective panel consists of two metal protective surface perforated plates, a sound absorption protective surface and a sound absorption material. Compared with the structure that the porous material is pasted on the rigid wall, the structure can know that the sound absorption capacity of the medium and low frequency is improved, and has the characteristics of simple structure, easy use and easy manufacture; the phenomenon that the sound absorption is insufficient when the porous material is attached to the rigid wall for acoustic treatment is solved, a better sound absorption effect is realized, and the sound absorption device can be applied to various acoustic laboratories.
Description
Technical Field
The utility model belongs to acoustics laboratory noise control field, concretely relates to cavity sound-absorbing structure of two-sided metal perforated plate sound absorption mask of acoustics laboratory.
Background
The acoustic laboratory is used for simulating various ideal sound field conditions, measuring various acoustic parameters, and researching the sound wave propagation rule and the sound absorption, sound insulation and noise elimination performances of various building parts, structures and materials. In an existing acoustic laboratory, some common devices such as a test device, an air conditioner, and a cable thereof are generally provided; or a part of spare pipelines are arranged in the acoustic laboratory, and the acoustic laboratory is often placed in the corner. However, according to the construction requirements of the laboratory, the corners should be treated acoustically accordingly, otherwise the overall effect of the laboratory is affected. Of course, some common tools are also necessary in the laboratory, and also face the problems of placement, aesthetics and acoustic treatment. According to the prior art, the method of performing acoustic treatment by adhering porous materials to a rigid wall not only causes the phenomenon of insufficient sound absorption capacity at medium and low frequencies, but also influences the attractiveness of a laboratory.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two-sided metal perforated plate sound absorption mask's of acoustics laboratory cavity sound absorption structure to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cavity sound absorbing structure of two-sided metal perforated plate sound absorption dado in acoustics laboratory, includes the cavity that two-sided metal perforation sound absorption dado board, rigid wall and two-sided metal perforation sound absorption dado board and rigid wall enclose, two-sided metal perforation sound absorption dado board comprises metal dado perforated plate one, metal dado perforated plate two, sound absorption dado and sound absorbent, and metal dado perforated plate one and metal dado perforated plate two constitute the sound absorption cavity, and the sound absorption cavity intussuseption is filled with sound absorbent, and the inside wall of sound absorption cavity has laid the sound absorption dado.
Preferably, the first metal-clad perforated plate and the second metal-clad perforated plate are made of aluminum alloy, galvanized steel, cold-rolled steel and stainless steel; the thickness of the plate is 0.5-3mm, and the perforation rate is 20% -40%.
Preferably, the sound absorption facing is a non-woven glass mat or glass cloth.
Preferably, the sound absorption material is rock wool, glass wool, polyurethane foam or melamine foam.
Preferably, the cavity is used for arranging air conditioning equipment, testing equipment, pipelines, cables or pedestrian passageways.
Preferably, the rigid wall is a steel bar mixed mud wall which is ready under the existing civil engineering condition.
The utility model discloses a technological effect and advantage: the structure is simple, the use and the manufacture are easy, the sound absorption capacity of medium and low frequency is improved, and the sound absorption device is suitable for various acoustic laboratories.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic plan view of the structure of fig. 1.
Fig. 3 is a schematic view of the arrangement of fig. 2.
Fig. 4 is a schematic elevation view of the present invention.
Fig. 5 is a schematic elevation view of the sound absorption walkway structure of the present invention.
Fig. 6 is the structure schematic diagram of the double-sided metal perforated sound absorption protective panel of the present invention.
Fig. 7 is a schematic diagram of an example application (tool room) of the present invention.
In the figure: the sound absorption type wall comprises a first metal protective face perforated plate 1, a second double-sided metal perforated sound absorption protective panel 2, a sound absorption material 3, a second metal protective face perforated plate 4, a cavity 5, a rigid wall 6, equipment 7, a pipeline 8, a cable 9, a sound source center 10, a sound absorption wedge 11, a sound absorption door 12, a common tool 13, a lighting lamp 14, a sound absorption walkway 15 and a sound absorption protective face 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a cavity sound-absorbing structure of two-sided metal perforated plate sound absorption mask in acoustics laboratory as shown in fig. 1-7, including two-sided metal perforation sound absorption mask 2, rigid wall 6 and two-sided metal perforation sound absorption mask 2 and the cavity 5 that rigid wall 6 encloses, two-sided metal perforation sound absorption mask 2 comprises metal mask perforated plate 1, metal mask perforated plate two 4, sound absorption mask 16 and sound absorbent 3, and the cavity is constituteed with metal mask perforated plate two 4 to metal mask perforated plate 1, and the sound absorbent cavity intussuseption is filled with sound absorbent 3, and sound absorption mask 16 has been laid to the inside wall of sound absorption cavity.
Specifically, the first metal-clad perforated plate 1 and the second metal-clad perforated plate 4 are made of aluminum alloy, galvanized steel, cold-rolled steel and stainless steel; the thickness of the plate is 0.5-3mm, and the perforation rate is 20% -40%.
Specifically, the sound-absorbing facing 16 is a non-woven glass mat or glass cloth.
Specifically, the sound absorption material 3 is rock wool, glass wool, polyurethane foam or melamine foam.
In particular, the cavity 5 is used for arranging air conditioning equipment, testing equipment, pipelines, cables or pedestrian passageways.
Specifically, the rigid wall 6 is a ready-made reinforced mixed mud wall under existing civil engineering conditions.
This novel corner that is used in all kinds of acoustics laboratories (half anechoic room, full anechoic room, sound proof room, reverberation room and hearing room etc.), include: the right angle corners of the top wall and the side walls, the right angle corners of the side walls and the side walls, and the corners of the side walls and the ground. The structure can enhance the sound absorption performance of corners and can enable the arrangement of the corner sound absorption structure to be more complete.
This is novel a corner for all kinds of acoustics laboratories to with sound-absorbing wedge 11, sound absorption pavement 15 and the illumination lamps and lanterns 14 of arranging in it, or other sound absorption products use of mutually supporting. (as shown in FIG. 5)
The novel full anechoic chamber has a middle area and a channel on the ground.
The double-sided metal perforated sound absorption panel protection structure is not divided into a front side and a back side, and can be commonly used in an upper channel, a lower channel and the like.
The distance between the cavities 5 (as shown in fig. 2) is 300-; inside which respective devices (air conditioning equipment, test equipment, etc.), a pipe 8 and a cable 9 are arranged. (as shown in FIG. 3 and FIG. 4)
To the arrangement of tools for common use 13, can be that the utility model discloses mutually support with acoustic door 12, make one and both can do the acoustic treatment, can put the tool room of arranging tools for common use again, reach one and construct dual-purpose effect. (as shown in FIG. 7)
The principle is as follows: the noise generated by the sound source center 10 is transmitted into the double-sided metal perforated sound absorption protective panel 2 through the medium in the air, sequentially passes through the metal protective surface perforated plate 1, the sound absorption protective surface 16, the sound absorption material 3 and the metal protective surface perforated plate 4 to reach the cavity 5, and at the moment, the double-sided metal perforated sound absorption protective panel 2 is subjected to primary sound absorption treatment. The noise continues to flow in the cavity 5 according to the propagation law, passing through the device 7, the pipe 8, the cable 9 and finally reaching the rigid wall 6. The noise is injected into the metal protecting surface perforated plate II 4, the sound-absorbing protecting surface 16, the sound-absorbing material 3 and the metal protecting surface perforated plate I1 again to reach the outside by the reflection effect generated by the rigid wall 6, and then the double-sided metal perforated sound-absorbing protecting panel 2 is subjected to secondary sound-absorbing treatment; a sound absorption process is completed and the cycle continues thereafter. (as shown in FIG. 1)
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. The utility model provides a cavity sound absorption structure of two-sided metal perforated plate sound absorption visor in acoustics laboratory, includes the cavity that two-sided metal perforation sound absorption visor board, rigid wall and two-sided metal perforation sound absorption visor board and rigid wall enclose, its characterized in that: the double-sided metal perforated sound absorption facing plate is composed of a metal facing perforated plate I, a metal facing perforated plate II, a sound absorption facing and a sound absorption material, wherein a sound absorption cavity is formed by the metal facing perforated plate I and the metal facing perforated plate, the sound absorption cavity is filled with the sound absorption material, and the sound absorption facing is laid on the inner side wall of the sound absorption cavity.
2. The cavity sound absorption structure of the sound absorption facing of the double-sided metal perforated plate of the acoustic laboratory according to claim 1, wherein: the first metal protective face perforated plate and the second metal protective face perforated plate are made of aluminum alloy, galvanized steel, cold-rolled steel and stainless steel; the thickness of the plate is 0.5-3mm, and the perforation rate is 20% -40%.
3. The cavity sound absorption structure of the sound absorption facing of the double-sided metal perforated plate of the acoustic laboratory according to claim 1, wherein: the sound absorption protective surface is non-woven glass felt or glass cloth.
4. The cavity sound absorption structure of the sound absorption facing of the double-sided metal perforated plate of the acoustic laboratory according to claim 1, wherein: the sound absorption material is rock wool, glass wool, polyurethane foam or melamine foam.
5. The cavity sound absorption structure of the sound absorption facing of the double-sided metal perforated plate of the acoustic laboratory according to claim 1, wherein: and air conditioning equipment, test equipment, pipelines, cables or pedestrian passages are arranged in the cavity.
6. The cavity sound absorption structure of the sound absorption facing of the double-sided metal perforated plate of the acoustic laboratory according to claim 1, wherein: the rigid wall is a ready-made reinforced mixed mud wall under the existing civil engineering condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921283004.XU CN210896602U (en) | 2019-08-08 | 2019-08-08 | Cavity sound absorption structure of sound absorption protective surface of double-sided metal perforated plate in acoustic laboratory |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921283004.XU CN210896602U (en) | 2019-08-08 | 2019-08-08 | Cavity sound absorption structure of sound absorption protective surface of double-sided metal perforated plate in acoustic laboratory |
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| CN210896602U true CN210896602U (en) | 2020-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492560A (en) * | 2021-07-06 | 2021-10-12 | 中国人民解放军陆军军医大学 | Bulkhead structure and multifunctional simulation test cabin |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113492560A (en) * | 2021-07-06 | 2021-10-12 | 中国人民解放军陆军军医大学 | Bulkhead structure and multifunctional simulation test cabin |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A cavity sound absorption structure of double-sided metal perforated plate sound absorption cover in acoustic laboratory Effective date of registration: 20210825 Granted publication date: 20200630 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN ZHONGYA ELECTROMECHANICAL INDUSTRIAL Co.,Ltd. Registration number: Y2021980008289 |