阅读说明：本技术 复合式降噪装置 (Combined noise reduction device ) 是由 王刚 李国防 李亮 孔德瑜 孙家圆 黄鹏 于 2019-11-19 设计创作，主要内容包括：本发明涉及一种复合式降噪装置,所述复合式降噪装置可固定在刚性壁面上,包括微穿孔板及与所述微穿孔板连接的背衬,所述微穿孔板上贯穿设置有若干吸声微孔,所述背衬上设置有若干与所述吸声微孔位置对应以增强吸声性能的吸声机构,所述吸声机构贯穿设置在所述背衬上。本申请通过在原有的微穿孔板上再设置有背衬,背衬上设置有与吸声微孔位置对应的吸声机构,进一步增强吸声效果。(The invention relates to a composite noise reduction device which can be fixed on a rigid wall surface and comprises a micro-perforated plate and a backing connected with the micro-perforated plate, wherein a plurality of sound absorption micropores are arranged on the micro-perforated plate in a penetrating way, a plurality of sound absorption mechanisms corresponding to the sound absorption micropores in position to enhance the sound absorption performance are arranged on the backing, and the sound absorption mechanisms are arranged on the backing in a penetrating way. This application is provided with the sound absorption mechanism that corresponds with sound absorption micropore position through being provided with the backing again on original microperforated panel, further strengthens sound absorption effect.)

1. The utility model provides a device of making an uproar falls in combined type, the device of making an uproar falls in combined type can fix on the rigidity wall, its characterized in that, including the microperforated panel and with the backing that the microperforated panel is connected, run through on the microperforated panel and be provided with a plurality of sound absorption micropores, be provided with on the backing a plurality of with sound absorption micropore position corresponds the sound absorption mechanism with reinforcing sound absorption performance, sound absorption mechanism runs through the setting on the backing.

2. The composite noise reducer of claim 1, wherein the sound absorbing mechanism is flared.

3. The composite noise reducer of claim 2, wherein the flared sound absorbing mechanism has a first opening and a second opening, the first opening having a smaller diameter than the second opening, the second opening being disposed proximate to the microperforated panel.

4. The composite noise reducer of claim 1, wherein the sound absorbing mechanism is uniformly disposed on the backing.

5. The composite noise reducer of claim 1, wherein the backing is of a sound absorbing material.

6. The composite noise reducer of claim 1, wherein the sound absorbing micro-holes are uniformly disposed on the micro-perforated plate.

Technical Field

The invention relates to a combined noise reduction device, and belongs to the technical field of mechanical noise reduction.

Background

The noise is a sound which causes dysphoria or harms human health due to too strong volume, along with the continuous development of society, the requirement of people on the environment is higher and higher, aiming at noise pollution, in recent years, a micro-perforated plate sound absorption structure is more common, namely, a plurality of holes with the aperture smaller than 1mm are punched on a plate and installed in a required place, the purpose of sound absorption and noise reduction is never achieved, the sound absorption bandwidth of the pure micro-perforated plate structure is narrower, and the sound absorption effect on noise with different frequencies is limited.

Disclosure of Invention

The invention aims to provide a composite noise reduction device which is simple in structure and convenient to operate.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a device of making an uproar falls in combined type, the device of making an uproar falls in combined type can fix on the rigidity wall, including the microperforated panel and with the backing that the microperforated panel is connected, run through on the microperforated panel and be provided with a plurality of sound absorption micropores, be provided with on the backing a plurality of with sound absorption micropore position corresponds the sound absorption mechanism with reinforcing sound absorption performance, sound absorption mechanism runs through the setting and is in on the backing.

Further, the sound absorption mechanism is horn-shaped.

Further, loudspeaker form sound absorption mechanism has first opening and second opening, the diameter of first opening is less than the second opening, the second opening is close to the microperforated panel setting.

Further, the sound absorbing mechanism is uniformly disposed on the backing.

Further, the material of the backing is a sound absorbing material.

Further, the sound absorption micropores are uniformly arranged on the micro-perforated plate.

The invention has the beneficial effects that: the original micro-perforated plate is provided with the back lining which is provided with the sound absorption mechanism corresponding to the sound absorption micropores, so that the sound absorption effect is further enhanced;

the sound absorption structure is arranged in a horn shape, the sound mode of the sound absorption structure is complex, and when sound waves pass through the horn mouth, the sound cavity in the horn mouth can resonate to achieve the purpose of sound absorption;

the combined type sound absorption device is simple in structure, convenient to install, applicable to any sound field environment needing sound absorption and noise reduction, and convenient and fast.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a composite noise reduction device according to the present invention.

Fig. 2 is a partial structural schematic diagram of fig. 1.

Fig. 3 is a partial structural schematic diagram of fig. 1.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to fig. 3, in a preferred embodiment of the present invention, a composite noise reduction device can be fixed on a rigid wall, which can be a supporting frame, a wall surface, etc., and is not particularly limited herein, depending on the actual situation. The combined type noise reduction device comprises a micro-perforated plate 1 and a backing 4 connected with the micro-perforated plate 1, wherein the micro-perforated plate 1 and the backing 4 can be detachably connected or fixedly connected and are determined according to actual conditions. A plurality of sound absorption micropores 2 are arranged on the micro-perforated plate 1 in a penetrating mode, and the sound absorption micropores 2 are evenly arranged on the micro-perforated plate 1. The sound absorption micropores 2 are uniformly arranged on the micro-perforated plate 1, so that the sound absorption effect of the micro-perforated plate 1 can be improved. The micro-perforated plate 1 may be made of a sound-absorbing material, which may be conventional material such as sound-absorbing cotton, or other material, and is not specifically limited herein, depending on the actual situation.

The back lining 4 is provided with a plurality of sound absorption mechanisms 3 corresponding to the sound absorption micropores 2 in position to enhance the sound absorption performance, and the sound absorption mechanisms 3 are arranged on the back lining 4 in a penetrating way. In this embodiment, the sound absorption mechanism 3 is in a horn shape, the acoustic mode of the sound absorption mechanism is complex, and when sound waves pass through the horn mouth, the sound cavity in the horn mouth can resonate, so that the purpose of sound absorption is achieved. Trumpet-shaped sound absorption mechanism 3 has first opening 31 and second opening 32, the diameter of first opening 31 is less than second opening 32, second opening 32 is close to microperforated panel 1 sets up. The sound absorption mechanism 3 is uniformly arranged on the back lining 4 to improve the sound absorption effect. The backing 4 is made of sound-absorbing material, so as to further improve the sound-absorbing effect, and the sound-absorbing material can be conventional materials such as sound-absorbing cotton, and can also be other materials, and is not particularly limited herein, depending on the actual situation.

In summary, the following steps: the original micro-perforated plate 1 is further provided with a back lining 4, and the back lining 4 is provided with a sound absorption mechanism 3 corresponding to the sound absorption micropores 2, so that the sound absorption effect is further enhanced;

the sound absorption structure is arranged in a horn shape, the sound mode of the sound absorption structure is complex, and when sound waves pass through the horn mouth, the sound cavity in the horn mouth can resonate to achieve the purpose of sound absorption;

the combined type sound absorption device is simple in structure, convenient to install, applicable to any sound field environment needing sound absorption and noise reduction, and convenient and fast.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.