CN214943778U - Multi-frequency band sound insulation glass - Google Patents
Multi-frequency band sound insulation glass Download PDFInfo
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- CN214943778U CN214943778U CN202120704194.9U CN202120704194U CN214943778U CN 214943778 U CN214943778 U CN 214943778U CN 202120704194 U CN202120704194 U CN 202120704194U CN 214943778 U CN214943778 U CN 214943778U
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- 239000011521 glass Substances 0.000 title claims abstract description 42
- 238000009413 insulation Methods 0.000 title claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229920006267 polyester film Polymers 0.000 claims description 3
- 239000010408 film Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The utility model discloses a multi-band sound-insulation glass, which comprises a cavity layer, wherein a flat plate layer and a cervical tube layer are respectively arranged on two sides of the cavity layer; the cavity layer is provided with cavities, and the neck pipe layer is provided with neck pipes corresponding to the cavities one by one; the cavities are arranged into at least two groups, the cavities belonging to the same group have equal volume, and the cavities belonging to different groups have unequal volume; and/or the neck pipes are arranged into at least two groups, the inner diameters of the neck pipes belonging to the same group are equal, and the inner diameters of the neck pipes belonging to different groups are not equal; the cavity body and the neck pipe which are correspondingly arranged are communicated with each other to form a Helmholtz resonance structure for sound absorption and noise reduction. The utility model discloses a multifrequency section sound-proof glass utilizes helmholtz resonator principle, can realize that multifrequency section sound absorption falls to set up the technical purpose that full frequency channel sound absorption was fallen to make an uproar.
Description
Technical Field
The utility model relates to a glass, specific be a multifrequency section sound insulation glass.
Background
Noise pollution, water pollution, air pollution and cavity waste pollution are main factors for damaging the environment, and are listed as four public hazards in the modern world. The noise pollution prevention and control is an indispensable project for protecting the acoustic environment, and has bright significance for energy conservation and emission reduction. Double-layer vacuum glass or hollow glass is mainly adopted in the market to insulate sound and reduce noise, and the sound insulation effect on the noise of medium and low frequency bands is poor. Therefore, how to realize high-efficiency full-band sound insulation and noise reduction becomes an important problem.
The current common noise reduction modes mainly comprise propagation source noise reduction and propagation path noise reduction. The noise reduction of the propagation source is mainly realized by reducing the noise in a mode of reducing the vibration of equipment and the like, and the research on sound insulation and noise reduction of the propagation path is mainly focused on two aspects of sound absorption materials and sound absorption structures. The sound absorption material is mainly a foam-shaped and granular organic fiber material or a metal fiber material, and the performance of the material is greatly influenced by temperature and humidity and is easy to damage and pollute the environment, so that the sound absorption material is difficult to be applied to the manufacture of noise reduction glass. Commonly used sound absorption structures include perforated resonance sound absorption structures, thin film resonance sound absorption structures, sound absorption wedges, and the like. Among them, the helmholtz resonator, which is the most typical perforated resonant sound absorbing structure, can convert incident sound energy into thermal energy by resonance for dissipation. The structure is simple, the fluid resistance is small, and the noise attenuation capability is good in a specific frequency band.
Disclosure of Invention
In view of this, the utility model aims at providing a multifrequency section sound-proof glass utilizes helmholtz resonator principle, can realize that multifrequency section sound absorption falls to make an uproar and sets up the technical purpose that full frequency channel sound absorption was fallen to make an uproar.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the multi-band sound insulation glass comprises a cavity layer, wherein a flat plate layer and a neck tube layer are respectively arranged on two sides of the cavity layer;
the cavity layer is provided with cavities, and the neck pipe layer is provided with neck pipes corresponding to the cavities one by one; the cavities are arranged into at least two groups, the cavities belonging to the same group have equal volume, and the cavities belonging to different groups have unequal volume; and/or the neck pipes are arranged into at least two groups, the inner diameters of the neck pipes belonging to the same group are equal, and the inner diameters of the neck pipes belonging to different groups are not equal;
the cavity body and the neck pipe which are correspondingly arranged are communicated with each other to form a Helmholtz resonance structure for sound absorption and noise reduction.
Furthermore, the cavities are arranged into three groups, the neck pipes are arranged into three groups, and four Helmholtz resonance structures with resonance frequencies are formed between the three groups of cavities and the three groups of neck pipes.
Furthermore, the cross sections of the three groups of cavities respectively adopt a regular hexagon, an isosceles trapezoid and a regular triangle, and the included angle between the lower bottom and the waist of the isosceles trapezoid is 60 degrees.
Further, the four resonance frequencies of the helmholtz resonance structure are 300Hz, 600Hz, 1200Hz and 1800Hz, respectively.
Further, the middle part on cavity layer is equipped with and is used for guaranteeing the visible hollow region, the cavity sets up the cavity is in the periphery of hollow region.
Further, a closed hollow cavity is formed among the flat plate layer, the neck pipe layer and the hollow area, and argon gas for improving heat preservation performance is injected into the hollow cavity.
Further, a heat insulation film used for enhancing the heat insulation effect and preventing dust from entering the neck pipe is arranged on the neck pipe layer.
Further, the heat insulation film is made of a PET polyester film.
Further, the thickness of the cavity layer is 12mm, and the thickness of the neck tube layer is 6 mm.
The beneficial effects of the utility model reside in that:
the utility model discloses a multifrequency section sound-proof glass sets up cavity and neck pipe through corresponding on cavity layer and neck pipe layer to make to constitute the helmholtz resonance structure that has different resonant frequency between cavity and the neck pipe, thereby can satisfy the technical purpose of making an uproar falls in the sound absorption of the noise of a plurality of frequency channels, the mutual stack of the frequency channel of making an uproar falls in the sound absorption through the helmholtz resonance structure of different resonant frequency, thereby reach the technical purpose of making an uproar falls in the common noise frequency range full frequency noise absorption in the life.
The utility model discloses a multifrequency section sound-proof glass still has following technological effect:
1) the hollow area is arranged in the middle of the cavity layer, so that the visibility of the glass is ensured;
2) the heat preservation effect of the glass can be improved by injecting argon into the hollow cavity;
3) the heat insulation layer is arranged on the neck pipe layer, so that the heat insulation effect can be improved, and dust can be prevented from entering the neck pipe;
4) the cross section through with the cavity sets up to regular hexagon, isosceles trapezoid and regular triangle, can enough improve the utilization ratio on cavity layer to set up more cavities, can guarantee glass's fatigue strength again, still have the sight simultaneously concurrently.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
FIG. 1 is a schematic structural diagram of an embodiment of the multi-band sound-insulating glass of the present invention;
FIG. 2 is a schematic structural view of a Helmholtz resonant structure;
FIG. 3 is a schematic representation of the acoustic absorption frequency band of a single Helmholtz resonant structure;
FIG. 4 is a schematic diagram of a chamber layer;
FIG. 5 is a graph of a noise reduction simulation of a Helmholtz resonant structure for four resonant frequencies;
fig. 6 is a simulation diagram of sound absorption and noise reduction of the multi-band soundproof glass of the embodiment.
Description of reference numerals:
1-a cavity layer; 2-a flat layer; 3-a neck tube layer; 4-a cavity; 5-neck tube; 6-a hollow zone; 7-heat insulation film.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1, it is a schematic structural diagram of an embodiment of the multi-band sound-insulating glass of the present invention. The multi-band sound insulation glass comprises a cavity layer 1, wherein a flat plate layer 2 and a neck tube layer 3 are respectively arranged on two sides of the cavity layer 1. The cavity layer 1 is provided with a cavity 4, and the neck pipe layer 3 is provided with neck pipes 5 corresponding to the cavity 4 one by one; the cavities 4 are arranged into at least two groups, the cavities 4 belonging to the same group have equal volume, and the cavities 4 belonging to different groups have unequal volume; and/or, the neck pipes 5 are arranged into at least two groups, the neck pipes 5 belonging to the same group have the same inner diameter, and the neck pipes 5 belonging to different groups have different inner diameters. The cavity 4 and the neck pipe 5 which are correspondingly arranged are communicated with each other to form a Helmholtz resonance structure for sound absorption and noise reduction.
Specifically, the resonance sound absorption principle of the helmholtz resonance structure is as follows: the air in the helmholtz resonator can be regarded as a spring-damper system, and when the incident frequency of the sound wave is the same as the vibration frequency of the system, the air in the cavity resonates to convert the incident sound energy into heat energy to be consumed. The resonance frequency of the helmholtz resonator can be adjusted according to the change of the cavity structure parameters, as shown in fig. 2, the calculation formula of the resonance frequency is as follows:
wherein f is the resonance frequency, c is the sound velocity, S is the cross-sectional area of the neck 5, l is the length of the neck 5, d is the diameter of the neck 5, and V is the volume of the cavity 4.
From this, the resonance frequency of the helmholtz resonant structure is related to three structural parameters: the diameter d of the neck 5, the length l of the neck 5 and the volume V of the cavity 4. Through changing these three structural parameters, can change the resonant frequency of helmholtz resonance structure to reach the sound absorption effect of multifrequency section even full frequency channel.
Further, three groups of cavities 4 are arranged, three groups of neck pipes 5 are arranged, and four frequency band Helmholtz resonance structures are formed between the three groups of cavities 4 and the three groups of neck pipes 5. The helmholtz resonator has a good attenuation capability of noise in a specific frequency band, as shown in fig. 3, and has a sound absorption bandwidth of about 550 Hz. The frequency range of the common noise in life is 50-2000Hz, wherein, the low frequency noise is < 400Hz, the medium frequency noise is 400- & lt1000 Hz, and the high frequency noise is more than 1000 Hz. Data in the chinese environmental noise pollution prevention report 2020 show that noise complaints can be roughly classified as: the method comprises the following steps of building construction noise, industrial noise, social life noise and traffic noise, wherein table 1 summarizes and arranges four common typical cases of the four types of noise, and counts specific noise frequency bands of the cases, and sets resonance frequencies of Helmholtz resonance structures according to the common noise frequency bands, wherein the four resonance frequencies are respectively 300Hz, 600Hz, 1200Hz and 1800Hz, so that the technical purpose of full-band sound absorption and noise reduction in a common noise frequency range in life can be achieved.
TABLE 1 statistical table of noise frequency band
As can be seen from the resonant frequency calculation formula, the resonant frequency is independent of the shape of the cavity 4. From the angle of improving the structural strength and the service life of glass, the bionic honeycomb structure is adopted in the embodiment, the honeycomb structure is used as one of the most common structures of sandwich structure materials, and is widely applied to industries such as buildings, traffic, chemical engineering and the like, and the honeycomb structure has the advantages of light weight, strong bearing capacity and high strength, and can effectively ensure the fatigue strength of glass. In summary, the cavities 4 of the present embodiment are set to three groups, the neck tubes 5 are set to three groups, and four frequency bands of helmholtz resonance structures are formed between the three groups of cavities 4 and the three groups of neck tubes 5. Wherein, the cross sections of the three groups of cavities 4 respectively adopt a regular hexagon, an isosceles trapezoid and a regular triangle, and the included angle between the lower bottom and the waist of the isosceles trapezoid is 60 degrees. Cavity 4 and neck 5 are arranged to the mode that this embodiment adopted different sizes to evenly arrange, and four kinds of resonant frequency's helmholtz resonance structure all establishes to 24 for glass all possesses good noise reduction performance at each frequency channel, and the final arrangement of cavity 4 of this embodiment is as shown in fig. 4, and glass still has mechanical stability and sight concurrently when having full frequency channel and fall the performance of making an uproar.
In addition, according to the requirements of relevant standards, the thickness specification of the glass for the small-area light-transmitting modeling of the external wall window, the door leaf and the like is 5-6mm, the common plate glass with the thickness of 6mm is selected as the raw material for the neck pipe layer 3 and the plate layer 2 in the embodiment, and the length of the neck pipe 5 is 6 mm. The total thickness of the common hollow glass in the market is 18-24mm, and in order to increase the matching between the glass of the present embodiment and other glass window frames and to strengthen the sound insulation effect as much as possible, the thickness of the cavity layer 1 of the present embodiment is set to 12mm, that is, the depth of the cavity 4 is 12 mm. Specifically, the structural parameters of the helmholtz resonance structures with four resonance frequencies of the multiband sound insulating glass of the present embodiment are shown in table 2, and the sound absorption and noise reduction effects of the helmholtz resonance structures with four resonance frequencies are shown in fig. 5.
TABLE 2 Cavity structure parameter table
Further, the middle part of the cavity layer 1 is provided with a hollow area 6 for ensuring visibility, and the cavity 4 is arranged around the hollow area 6. Specifically, according to the current standard of the building industry in China, the daylighting requirement and the ventilation effect of a window are comprehensively considered, and 900 x 1500mm is selected as the basic window size. To ensure the visibility of the window, the cavity layer 1 is designed as a frame structure, i.e. a hollow area 6 is arranged in the middle of the cavity layer 1, and the cavities 4 are distributed at the edge of the cavity layer 1. Preferably, in order to improve the heat preservation performance, argon gas for improving the heat preservation performance is injected into a closed hollow cavity formed among the flat plate layer 2, the neck pipe layer 3 and the hollow zone 6. Meanwhile, in order to improve the user's interaction feeling and to conform to the aesthetic appearance of the window, the size of the hollow area 6 in this embodiment is 600 × 1200 mm. That is, the area ratio of the cavity layer 1 for disposing the cavity 4 is: the ratio of the width direction is not more than 33.3%, the ratio of the height direction is not more than 20.0%, and the ratio is designed to be evenly distributed along the edge of the window.
Preferably, the present embodiment is provided with a heat insulating film 7 for enhancing a heat insulating effect and preventing dust from entering the neck 5 on the neck layer 3, and the heat insulating film 7 of the present embodiment is a PET polyester film. Further improving the heat insulation effect and simultaneously avoiding dust from entering the neck tube.
The noise reduction effect of the multi-band soundproof glass of the present embodiment was simulated by using COMSOL simulation software. As shown in fig. 6, the sound absorption and noise reduction frequency band can effectively cover 20-2000Hz, that is, the multi-band sound-insulating glass of the present embodiment can achieve the technical purpose of sound absorption and noise reduction of full frequency in the frequency range of common noise in life, and the scientificity of the size selection of the helmholtz resonance structure of four resonance frequencies in the present embodiment is proved; the average sound transmission loss of the multi-band sound insulation glass can reach 80dB, the lowest value exceeds 40dB, and the noise reduction effect far exceeds the sound transmission loss of the hollow glass with the same scale.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (9)
1. A multi-band sound insulating glass is characterized in that: the device comprises a cavity layer (1), wherein a flat plate layer (2) and a neck pipe layer (3) are respectively arranged on two sides of the cavity layer (1);
the cavity body layer (1) is provided with cavity bodies (4), and the neck pipe layer (3) and the cavity bodies (4) are provided with neck pipes (5) in a one-to-one correspondence manner; the cavities (4) are arranged into at least two groups, the cavities (4) belonging to the same group have equal volume, and the cavities (4) belonging to different groups have unequal volume; and/or the neck pipes (5) are arranged into at least two groups, the inner diameters of the neck pipes (5) belonging to the same group are equal, and the inner diameters of the neck pipes (5) respectively belonging to different groups are not equal;
the cavity (4) and the neck pipe (5) which are correspondingly arranged are communicated with each other to form a Helmholtz resonance structure for sound absorption and noise reduction.
2. The multiple band type acoustic insulating glass according to claim 1, wherein: the cavity (4) is set into three groups, the neck pipe (5) is set into three groups, and the cavity (4) and the neck pipe (5) form four Helmholtz resonance structures with resonance frequencies.
3. The multiple band type acoustic insulating glass according to claim 2, wherein: the cross sections of the three groups of cavities (4) respectively adopt a regular hexagon, an isosceles trapezoid and a regular triangle, and the included angle between the lower bottom and the waist of the isosceles trapezoid is 60 degrees.
4. The multiple band type acoustic insulating glass according to claim 2, wherein: the four resonance frequencies of the Helmholtz resonance structure are 300Hz, 600Hz, 1200Hz and 1800Hz respectively.
5. The multiple band type acoustic insulating glass according to claim 1, wherein: the middle part on cavity layer (1) is equipped with and is used for guaranteeing visible hollow region (6), cavity (4) set up all around of hollow region (6).
6. The multiple band type acoustic insulating glass according to claim 5, wherein: and a closed hollow cavity is formed among the flat plate layer (2), the neck pipe layer (3) and the hollow area (6), and argon gas for improving the heat preservation performance is injected into the hollow cavity.
7. The multiple band type acoustic insulating glass according to claim 1, wherein: and a heat insulation film (7) for enhancing the heat insulation effect and preventing dust from entering the neck pipe (5) is arranged on the neck pipe layer (3).
8. The multiple band type acoustic insulating glass according to claim 7, wherein: the heat insulation film (7) is a PET polyester film.
9. The multiple band type acoustic insulating glass according to claim 1, wherein: the thickness of cavity layer (1) is 12mm, and the thickness of neck pipe layer (3) is 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120704194.9U CN214943778U (en) | 2021-04-07 | 2021-04-07 | Multi-frequency band sound insulation glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120704194.9U CN214943778U (en) | 2021-04-07 | 2021-04-07 | Multi-frequency band sound insulation glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214943778U true CN214943778U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120704194.9U Expired - Fee Related CN214943778U (en) | 2021-04-07 | 2021-04-07 | Multi-frequency band sound insulation glass |
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| Country | Link |
|---|---|
| CN (1) | CN214943778U (en) |
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2021
- 2021-04-07 CN CN202120704194.9U patent/CN214943778U/en not_active Expired - Fee Related
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Granted publication date: 20211130 |