CN210658083U - Transparent ventilation noise eliminator - Google Patents
Transparent ventilation noise eliminator Download PDFInfo
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- CN210658083U CN210658083U CN201921122984.5U CN201921122984U CN210658083U CN 210658083 U CN210658083 U CN 210658083U CN 201921122984 U CN201921122984 U CN 201921122984U CN 210658083 U CN210658083 U CN 210658083U
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Abstract
The transparent ventilation noise-abatement device is characterized by comprising a frame structure, a panel and a plurality of micro-perforated noise-abatement plates, wherein the panel and the micro-perforated noise-abatement plates are fixed on the frame structure; the micro-perforated sound-absorbing plate is provided with a plurality of micro-perforations, and the distance between the panel and the micro-perforated sound-absorbing plate is less than or equal to 50 mm. The transparent ventilation noise eliminator can ventilate and transmit light, is attractive in appearance, stable in structure, simple and easy to install, can enable the sound absorption performance of a middle-low frequency band region to exceed 50% while reducing the depth of a cavity, can be additionally provided with a transparent or sound-absorbing transverse partition plate, and can enhance the sound absorption performance and the structural fastness of the transparent ventilation noise eliminator.
Description
Technical Field
The application relates to the technical field of silencers, in particular to a transparent ventilation silencing device.
Background
With the development of social economy and the common use of automobiles, traffic noise is more and more serious, and a sound insulation barrier is arranged beside a road and is a method for reducing the traffic noise; however, since cities are populated with a large number of people and densely populated, many people are still disturbed by noise, and therefore other noise reduction measures are required.
The muffler is a device which can allow air flow and effectively prevent or reduce the outward transmission of sound energy, and the application has the advantages that no sound absorption material needs to be filled, only relatively low sound absorption performance can be achieved at low frequency lower than 400Hz, but the micro-perforated sound absorption plate needs a larger cavity to increase the sound absorption performance of a low-frequency zone.
The sound absorption structure of the micro-perforated sound absorption plate utilizes the sound resistance of the perforation to control the relative sound resistance of the structure, does not need to be filled with sound absorption materials, avoids secondary pollution, and can be used under the conditions of high temperature, high humidity, air flow impact, corrosion and the like. The micro-perforated sound-absorbing plate structure is a resonance sound-absorbing structure, a large back cavity is needed for obtaining ideal sound-absorbing performance at low frequency, the whole sound-absorbing structure also occupies a large space, however, in the actual noise control engineering, due to the limitation of space conditions, the low-frequency sound-absorbing performance of the micro-perforated sound-absorbing plate structure is not ideal.
Therefore, it is necessary to develop a sound absorber which can reduce the depth of the cavity, achieve sound absorption performance of more than 50% in the middle and low frequency band, and is ventilated and transparent, so as to provide a healthy and comfortable sound environment for users.
Disclosure of Invention
The transparent ventilation silencer can ventilate and transmit light, and can reduce the depth of a cavity and achieve sound absorption performance of more than 50% in a middle and low frequency band region.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a transparent ventilation noise-abatement device comprises a frame structure, a panel and a plurality of micro-perforated noise-abatement plates; the panel and the micro-perforated sound absorbing sheet are fixed on the frame structure; the panel is made of transparent materials, an air inlet and an air outlet are formed on the front side and the rear side of the panel, and a plurality of exhaust channels are formed by the air inlet and the air outlet; the micro-perforated sound-absorbing plate is provided with a plurality of micro-perforations, and the distance between the panel and the micro-perforated sound-absorbing plate is less than or equal to 50 mm; the micro-perforations are arranged in a rectangle or a triangle; and a plurality of transverse partition plates are arranged between the panel and the micro-perforated sound-absorbing plate at intervals.
As a further improvement of the present application, the frame structure is made of glass and/or metal material.
As a further improvement of the present application, the panel is made of glass.
As a further improvement of the present application, the microperforated acoustical panel is made of a transparent or translucent plastic material.
As a further improved technical scheme of the application, the thickness of the micro-perforated noise elimination plate is more than 1.0 mm.
As a further improved technical scheme of the application, the diameter of the micro-perforation is within 0.5 mm.
As a further improved technical scheme of the application, the perforation rate of the micro-perforated sound-absorbing plate is within 0.5%.
As a further improvement of the present application, the transverse partition is made of a transparent material or an acoustic panel.
The transparent ventilation silencer can be mounted in front of or adjacent to an outer wall of a building or an openable window, is attractive in appearance, stable in structure, simple and easy to mount, can reduce noise passing through the silencer while ventilating and transmitting light, and can reach more than 50% of sound absorption rate in a middle and low frequency band when the depth of a cavity is reduced; the transverse partition plate made of transparent materials or sound-absorbing plates is arranged in the silencing device, so that the sound-absorbing performance and the structural fastness of the silencing device can be enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a transparent ventilation muffler device incorporating a micro-perforated muffler plate according to the present invention.
Fig. 2 is a schematic structural view of a transparent ventilation muffler device with two micro-perforated muffling plates built therein according to the present application.
Fig. 3 is a schematic structural view of a transparent ventilation noise-abatement device with three micro-perforated noise-abatement plates built therein according to the present application.
Fig. 4 is a sectional view of the transverse partition plate built in the transparent ventilation and noise elimination device.
Fig. 5 is a noise reduction performance diagram of the transparent ventilation muffler device according to the first embodiment of the present application.
FIG. 6 is a graph comparing sound absorption coefficients of a first embodiment and a second embodiment of the transparent ventilation muffler assembly of the present application;
FIG. 7 is a graph comparing sound absorption coefficients of a third embodiment and a fourth embodiment of the transparent ventilation muffler device according to the present application;
the drawings illustrate the following:
1. a panel; 2. a microperforated acoustical panel; 3. an air inlet; 4. an air outlet; 5. a frame structure; 6. a transverse partition;
in fig. 6 and 7, the frequency band of 1/3 octaves is plotted on the abscissa in HZ and the sound absorption coefficient is plotted on the ordinate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The application provides a transparent ventilation noise-abatement device, which comprises a frame structure 5, a panel 1 and a plurality of micro-perforated noise-abatement plates 2; the panel 1 and the microperforated panel 2 are fixed to the frame structure 5; the panel 1 is made of transparent materials, an air inlet 3 and an air outlet 4 are formed on the front side and the rear side of the panel 1, and a plurality of exhaust channels are formed by the air inlet 3 and the air outlet 4; the micro-perforated sound-absorbing plate 2 is provided with a plurality of micro-perforations, and the distance between the panel 1 and the micro-perforated sound-absorbing plate 2 is less than or equal to 50 mm; the micro-perforations of the micro-perforated sound-absorbing plate 2 are arranged in a rectangular or triangular shape, and a plurality of transverse partition plates 6 are arranged between the panel 1 and the micro-perforated sound-absorbing plate 2 at intervals; the frame structure 5 is made of glass and/or metal materials, the panel 1 is made of glass, the micro-perforated sound absorption plate 2 is made of transparent or semitransparent plastic materials, the thickness of the micro-perforated sound absorption plate 2 is more than 1.0mm, the diameter of the micro-perforated hole is within 0.5mm, the perforation rate of the micro-perforated sound absorption plate 2 is within 0.5%, and the transverse partition plate 6 is made of transparent materials or sound absorption plates.
The silencing device combines the silencing principles of a resonant cavity type reactive silencer and a micro-perforated silencing plate silencer, please refer to the attached drawings 1 to 3, wherein air containing traffic noise enters the transparent ventilation silencing device from an air inlet 3, passes through a built-in micro-perforated silencing plate 2, passes through an air interlayer of the panel 1 and the micro-perforated silencing plate 2, and is exhausted through an air outlet 4 channel.
According to the transparent ventilation noise elimination device, the micro-perforations are uniformly distributed on the micro-perforated noise elimination plate 2, the sizes and the shapes of the micro-perforations are completely the same, each micro-perforation can be regarded as a short pipe, and the length of the short pipe is the thickness of the micro-perforated noise elimination plate 2. When air containing traffic noise enters the transparent ventilation noise elimination device from the air inlet 3, sound waves enter the micro-perforated noise elimination plate 2, the air in the micro-perforated hole and the air near the micro-perforated hole vibrate back and forth under the excitation action of the sound waves, and friction damping during vibration enables a part of sound energy to be converted into heat energy to be dissipated, so that the noise is reduced, and the aim of eliminating the noise is fulfilled. When the frequency of the sound wave is the same as the natural frequency of the resonant cavity, resonance is generated, the amplitude and the vibration speed of the reciprocating vibration of the air reach the maximum value, at the moment, the consumed sound energy is the largest, and the sound attenuation volume is the largest.
The utility model provides a transparent ventilation noise eliminator, the thickness of micro-perforated noise eliminator 2 is set to 1.0mm, the micro-perforated diameter of micro-perforated noise eliminator 2 is 0.5mm, the perforation rate of micro-perforated noise eliminator 2 is 0.5%, when the distance of panel 1 and micro-perforated noise eliminator 2 is 30mm, can absorb 50% acoustic energy in 315HZ to 1250HZ frequency band, when the distance of panel 1 and micro-perforated noise eliminator 2 is 50mm, can absorb 50% acoustic energy in 200HZ to 1000HZ frequency band, when reducing the cavity depth, the centering low frequency can reach more than 50% sound absorption performance.
Example one
The transparent ventilation noise eliminator can be fixedly or movably arranged in front of or adjacent to an openable outer window, can reduce noise transmitted from the outside to the inside of the room, is combined with a glass window and a door to form a unique window and door system with natural ventilation and low-medium frequency noise reduction functions, can reduce traffic noise, industrial noise and other types of low-medium frequency noise, and simultaneously keeps transparency and natural ventilation. The transparent ventilation noise-abatement device is installed in a window with an opening of 1385mm x 870mm, a panel 1 is made of transparent glass, a frame structure 5 is an aluminum profile structure, a micro-perforated noise-abatement plate 2 is arranged in the frame structure, the distance between the panel 1 and the micro-perforated noise-abatement plate 2 is 30mm, the thickness of the micro-perforated noise-abatement plate 2 is 1.0mm, the diameter of micro-perforations of the micro-perforated noise-abatement plate 2 is 0.5mm, the perforation rate of the micro-perforated noise-abatement plate 2 is 0.5%, micro-perforations of the micro-perforated noise-abatement plate 2 are arranged in a rectangular shape, 3 transverse partition plates 6 are arranged between the panel 1 and the micro-perforated noise-abatement plate 2 at intervals, the transverse partition plates 6 are made of sound-absorbing material, as shown in fig. 5, the overall sound attenuation of the transparent ventilation noise-abatement device is 6 db to 11 db, as shown in fig. 6, and the transparent ventilation noise-abatement device can absorb 50% of sound energy in a 315 HZ.
Example two
The transparent ventilation noise-abatement device is installed in a window with an opening of 1385mm x 870mm, a panel 1 is made of transparent glass, a frame structure 5 is an aluminum profile structure, a micro-perforated noise-abatement plate 2 is arranged in the frame structure, the distance between the panel 1 and the micro-perforated noise-abatement plate 2 is 30mm, the thickness of the micro-perforated noise-abatement plate 2 is 1.0mm, the diameter of micro-perforations of the micro-perforated noise-abatement plate 2 is 0.5mm, the perforation rate of the micro-perforated noise-abatement plate 2 is 0.5%, micro-perforations of the micro-perforated noise-abatement plate 2 are arranged in a rectangle, and as shown in fig. 6, the sound absorption performance of the transparent ventilation noise-abatement device in a frequency band from 400HZ to 1250HZ reaches 50%.
EXAMPLE III
The transparent ventilation noise eliminator is applied to the outer wall of a building, the thickness of a micro-perforated noise eliminating plate 2 of the transparent ventilation noise eliminator is 1.0mm, a micro-perforated noise eliminating plate 2 is arranged in the transparent ventilation noise eliminator, the distance between a panel 1 and the micro-perforated noise eliminating plate 2 is 50mm, the diameter of a micro-perforated hole of the micro-perforated noise eliminating plate 2 is 0.5mm, the perforation rate of the micro-perforated noise eliminating plate 2 is 0.5%, 3 transparent transverse partition plates 6 are arranged between the panel 1 and the micro-perforated noise eliminating plate 2 at intervals, and the transverse partition plates 6 are made of sound absorbing materials. The transparent ventilation and noise elimination device is arranged on the outer wall of a building and is integrated with the outer wall of the building into a unified and coordinated organic whole, and the 1385mm x 870mm opening is formed in the outer wall of the building. This transparent ventilation noise eliminator can reduce and spread indoor noise from outdoor, makes the sound environment reach and receives the level, keeps transparency and natural draft simultaneously, and when the window was closed, this noise eliminator can provide the natural draft for the room, reduces the noise simultaneously and spreads, and built-in horizontal partition 6 can strengthen sound absorption effect and structural stability, adds the valve in this transparent ventilation noise eliminator's air intake 3 or air outlet 4 simultaneously, can prevent the rainwater infiltration. As shown in fig. 7, the transparent ventilation muffler device can absorb 50% of sound energy in the 200HZ to 1000HZ frequency band.
Example four
The transparent ventilation noise eliminator is applied to the outer wall of a building, the thickness of a micro-perforated noise eliminating plate 2 of the transparent ventilation noise eliminator is 1.0mm, a micro-perforated noise eliminating plate 2 is arranged in the transparent ventilation noise eliminator, the distance between a panel 1 and the micro-perforated noise eliminating plate 2 is 50mm, the diameter of a micro-perforated hole of the micro-perforated noise eliminating plate 2 is 0.5mm, the perforation rate of the micro-perforated noise eliminating plate 2 is 0.5%, 3 transparent transverse partition plates 6 are arranged between the panel 1 and the micro-perforated noise eliminating plate 2 at intervals, and the transverse partition plates 6 are made of transparent materials. The transparent ventilation and noise elimination device is arranged on the outer wall of a building and is integrated with the outer wall of the building into a unified and coordinated organic whole, and the 1385mm x 870mm opening is formed in the outer wall of the building. This transparent ventilation noise eliminator can reduce and spread indoor noise from outdoor, makes the sound environment reach and receives the level, keeps transparency and natural draft simultaneously, and when the window was closed, this noise eliminator can provide the natural draft for the room, reduces the noise simultaneously and spreads, and built-in horizontal partition 6 can strengthen sound absorption effect and structural stability, adds the valve in this transparent ventilation noise eliminator's air intake 3 or air outlet 4 simultaneously, can prevent the rainwater infiltration. As shown in fig. 7, the transparent ventilation muffler device can absorb 50% of sound energy in the 200HZ to 1000HZ frequency band.
The application discloses transparent ventilation noise eliminator makes with transparent material, if utilize organic glass (PMMA), Polycarbonate (PC), dacron resin (PET) or glass to make, as shown in fig. 2 and 3, but set up a plurality of micro-perforation noise elimination boards 2 on the frame construction 5, can improve the performance of making an uproar. Lighting equipment can be additionally arranged in the silencing device to match with the required indoor atmosphere; a transparent or sound-absorbing transverse partition plate 6 is additionally arranged between the panel 1 and the micro-perforated sound-absorbing plate 2 so as to enhance the sound absorption performance and the structural fastness.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (8)
1. A transparent ventilation noise-abatement device is characterized by comprising a frame structure, a panel and a plurality of micro-perforated noise-abatement plates; the panel and the micro-perforated sound absorbing sheet are fixed on the frame structure; the panel is made of transparent materials, an air inlet and an air outlet are formed on the front side and the rear side of the panel, and a plurality of exhaust channels are formed by the air inlet and the air outlet; the micro-perforated sound-absorbing plate is provided with a plurality of micro-perforations, and the distance between the panel and the micro-perforated sound-absorbing plate is less than or equal to 50 mm; the micro-perforations are arranged in a rectangle or a triangle; and a plurality of transverse partition plates are arranged between the panel and the micro-perforated sound-absorbing plate at intervals.
2. The transparent ventilation muffler device of claim 1, wherein the frame structure is made of glass and/or metal material.
3. The transparent ventilation muffler assembly of claim 1, wherein the panel is made of glass.
4. The transparent ventilation muffler device of claim 1, wherein the micro-perforated muffler plate is made of a transparent or translucent material.
5. The transparent ventilation muffler device of claim 1, wherein the thickness of the micro-perforated muffler plate is 1.0mm or more.
6. The transparent ventilation muffler assembly of claim 1, wherein the diameter of the micro-perforations is within 0.5 mm.
7. The transparent ventilation muffler assembly of claim 1, wherein the micro perforated muffler plate has a perforation rate within 0.5%.
8. The transparent ventilation muffler assembly of claim 1, wherein the transverse partition is made of a transparent material or an acoustic panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921122984.5U CN210658083U (en) | 2019-07-17 | 2019-07-17 | Transparent ventilation noise eliminator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921122984.5U CN210658083U (en) | 2019-07-17 | 2019-07-17 | Transparent ventilation noise eliminator |
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| CN210658083U true CN210658083U (en) | 2020-06-02 |
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| CN201921122984.5U Active CN210658083U (en) | 2019-07-17 | 2019-07-17 | Transparent ventilation noise eliminator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230276A (en) * | 2019-07-17 | 2019-09-13 | 盈普声学（惠州）有限公司 | A kind of transparent ventilating noise silencer |
| WO2024098541A1 (en) * | 2022-11-08 | 2024-05-16 | 阳光电源股份有限公司 | Silencing air duct device and charging pile |
-
2019
- 2019-07-17 CN CN201921122984.5U patent/CN210658083U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230276A (en) * | 2019-07-17 | 2019-09-13 | 盈普声学（惠州）有限公司 | A kind of transparent ventilating noise silencer |
| WO2024098541A1 (en) * | 2022-11-08 | 2024-05-16 | 阳光电源股份有限公司 | Silencing air duct device and charging pile |
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