CN216689857U

CN216689857U - Three-layer composite sound insulation board

Info

Publication number: CN216689857U
Application number: CN202122713884.3U
Authority: CN
Inventors: 黄晓锋
Original assignee: Xiamen Quietime Co Ltd
Current assignee: Xiamen Quietime Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-06-07
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a three-layer composite sound insulation plate which comprises a phonon crystal layer and a middle layer, wherein the middle layer is arranged between the two phonon crystal layers, the middle layer is made of sound absorption or sound insulation materials, and the materials are different from the phonon crystal layer. The utility model compounds the phonon crystal layer made of different sound absorption or sound insulation materials and the middle layer into a whole, and utilizes the difference of physical properties of the different sound absorption or sound insulation materials to ensure that the phonon crystal layer is staggered with the wave trough of the isolated sound wave frequency spectrum of the middle layer, thereby improving the problem of poor sound insulation effect of a simple substance material on a certain frequency or frequency band, effectively improving the sound insulation quantity of the composite sound insulation plate, having better sound insulation effect, and enhancing the physical properties of the material, such as strength, rigidity and the like after the phonon crystal layer is compounded with the middle layer.

Description

Three-layer composite sound insulation board

Technical Field

The utility model relates to the technical field of sound insulation and noise reduction, in particular to a three-layer composite sound insulation board.

Background

Noise pollution control is one of the main problems of environmental pollution control in the century, and how to improve sound insulation capability of buildings and solve noise problems is an important subject to provide a quiet and comfortable living and office environment for people. In this regard, sound insulation panels are commonly used products.

At present, the existing sound insulation boards on the market are various, but when the sound insulation board material is determined, the only method for increasing the sound insulation quantity is to increase the thickness of the product. However, from the analysis of the sound insulation curve mechanism of the material, because any material has specific wave troughs and matching frequencies for blocking the sound wave frequency spectrum, even if the mass of the simple substance material is larger, the improvement of the sound insulation amount is still restricted by insufficient blocking of the wave trough frequency and weakened sound insulation effect on sound waves of certain frequency or frequency band, so that the sound insulation effect of the sound insulation plate is not ideal in fact.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a three-layer composite sound insulation plate to improve the sound insulation effect.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a three-layer composite sound insulation board, includes phononic crystal layer and intermediate level, the intermediate level sets up two-layerly between the phononic crystal layer, the intermediate level is made by sound absorption or sound insulation material, and this material is different with phononic crystal layer.

Preferably, the intermediate layer is made of a steel plate or a damping paint. The characteristics of heavy and compact sound insulation material can be utilized, and the sound insulation effect of the composite sound insulation board is effectively improved.

Preferably, the intermediate layer is made of foamed aluminum or aerogel or glass wool. By adopting the porous sound absorption material, the sound absorption effect of the micropores in the material can be utilized, and the sound absorption effect of the composite sound insulation plate is effectively improved.

Further, the phononic crystal layer comprises a flexible plate body and at least two layers of flexible particle layers wrapped inside the flexible plate body, the flexible particle layers are formed by a plurality of flexible particles which are arranged periodically, each layer of flexible particle layers are arranged up and down, and the flexible particle diameter in the upper layer of flexible particle layers is larger than that in the lower layer of flexible particle layers.

Preferably, the flexible plate body is made of environment-friendly water-based glue.

Preferably, the flexible particles are rubber particles or silica gel particles or resin particles.

Preferably, the particle size of the flexible particles is 1-10 mm.

Preferably, the thickness of the middle layer is 0.5-10 mm. But the specific thickness needs to be further determined according to actual conditions.

Preferably, the thickness of the phononic crystal layer is 5-50 mm. But the specific thickness needs to be further determined according to actual conditions.

Further, the phononic crystal layer and the middle layer are bonded with each other through glue.

The utility model has the following beneficial effects:

1. the utility model compounds the phonon crystal layer made of different sound absorption or sound insulation materials and the middle layer into a whole, and utilizes the different physical properties of the different sound absorption or sound insulation materials to stagger the phonon crystal layer and the wave trough of the sound wave frequency spectrum blocked by the middle layer, thereby improving the problem of poor sound insulation effect of a simple substance material on a certain frequency or frequency band, effectively improving the sound insulation amount of the composite sound insulation plate and having better sound insulation effect.

2. After the phononic crystal layer and the intermediate layer are compounded, physical properties such as strength, rigidity and the like of the material are enhanced.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a second photonic crystal layer according to an embodiment of the present invention.

Description of the main component symbols: 1. a phononic crystal layer; 2. an intermediate layer; 3. a flexible plate body; 4. a layer of flexible particles; 5. flexible particles.

Detailed Description

The utility model is further described with reference to the following drawings and detailed description.

Example one

As shown in fig. 1, a three-layer composite sound insulation board comprises a phononic crystal layer 1 and an intermediate layer 2, wherein the intermediate layer 2 is arranged between the two phononic crystal layers 1, the intermediate layer 2 is made of a sound absorption or sound insulation material, and the material is different from the phononic crystal layer 1.

Wherein, the middle layer 2 can be made of sound insulation material, preferably steel plate or damping paint. The characteristics of heavy and compact sound insulation materials are utilized, and the sound insulation and noise reduction effects of the composite sound insulation plate are mainly improved in the aspect of sound insulation. The intermediate layer 2 can also be made of a porous sound-absorbing material, preferably of foamed aluminium or aerogel or glass wool. The sound energy can be dissipated by utilizing a large number of mutually-communicated and outwards-opened micropores in the material, the sound absorption effect is generated, and the sound absorption effect of the composite sound insulation plate is improved. The thickness of the middle layer 2 is 0.5-10 mm. The thickness of the phononic crystal layer 1 is 5-50 mm. However, the thicknesses of the photonic crystal layer 1 and the intermediate layer 2 need to be further determined in accordance with actual conditions. The phononic crystal layer 1 and the middle layer 2 are bonded with each other through glue.

The above-mentioned phononic crystal layer 1 refers to a novel structure formed by periodically arranging an elastic solid in a medium. When sound waves are transmitted in the phononic crystal layer 1, the sound waves are prevented from being transmitted within a certain frequency range under the action of the internal structure, and the purposes of sound insulation and noise reduction can be achieved. After the phonon crystal layer 1 and the middle layer 2 are compounded, the wave troughs of the two separated sound wave frequency spectrums are staggered, so that the sound insulation effect of the simple substance material on a certain frequency or frequency band can be further improved, the problem of poor sound insulation effect of the simple substance material is improved, the sound insulation amount of the composite sound insulation plate is effectively improved, and the sound insulation effect is better. Further, physical properties such as material strength and rigidity are enhanced after the phononic crystal layer 1 and the intermediate layer 2 are combined.

Example two

On the basis of the first embodiment, as shown in fig. 2 to 3, the phononic crystal layer 1 includes a flexible plate body 3 and at least two flexible particle layers 4 wrapped inside the flexible plate body 3, each flexible particle layer 4 is composed of a plurality of flexible particles 5 arranged periodically, each flexible particle layer 4 is arranged up and down, and the particle diameter of the flexible particles 5 in the upper flexible particle layer 4 is larger than that of the flexible particles 5 in the lower flexible particle layer 4. The flexible plate body 3 is made of environment-friendly water-based glue. The flexible particles 5 are rubber particles or silica gel particles or resin particles. The particle size of the flexible particles 5 is 1-10 mm.

A plurality of flexible particles 5 are arranged in the flexible plate body 3 periodically to form a multi-layer porous phononic crystal layer 1 cavity structure, and when sound waves are transmitted in the phononic crystal layer 1, the sound waves can be effectively prevented from being transmitted within a certain frequency range under the action of the internal structure of the phononic crystal layer 1, so that the purposes of sound insulation and noise reduction are achieved.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a three-layer composite sound insulation board which characterized in that: including phononic crystal layer and intermediate level, the intermediate level sets up two-layerly between the phononic crystal layer, the intermediate level is made by sound absorption or sound insulation material, and this material is different with phononic crystal layer, phononic crystal layer includes the flexible plate body and at least two-layer parcel is in the inside flexible particle layer of flexible plate body, flexible particle layer comprises a plurality of flexible particles that are periodic arrangement.

2. The three-layer composite sound-insulating panel according to claim 1, wherein: the middle layer is made of a steel plate or damping paint.

3. The three-layer composite sound-insulating panel according to claim 1, wherein: the intermediate layer is made of foamed aluminum or aerogel or glass wool.

4. The three-layer composite sound-insulating panel according to claim 1, wherein: the flexible particle layers are arranged up and down, and the particle size of the flexible particles in the upper flexible particle layer is larger than that of the flexible particles in the lower flexible particle layer.

5. The three-layer composite acoustical panel of claim 4, wherein: the flexible plate body is made of environment-friendly water-based glue.

6. The three-layer composite acoustical panel of claim 4, wherein: the flexible particles are rubber particles or silica gel particles or resin particles.

7. The three-layer composite acoustical panel of claim 4, wherein: the particle size of the flexible particles is 1-10 mm.

8. The three-layer composite sound-insulating panel according to claim 1, wherein: the thickness of the middle layer is 0.5-10 mm.

9. The three-layer composite sound-insulating panel according to claim 1, wherein: the thickness of the phononic crystal layer is 5-50 mm.

10. The three-layer composite sound-insulating panel according to claim 1, wherein: and the phononic crystal layer and the middle layer are mutually bonded through glue.