CN215976921U

CN215976921U - Louvered muffler device

Info

Publication number: CN215976921U
Application number: CN202121736251.8U
Authority: CN
Inventors: 单泰雷
Original assignee: Guangzhou Taiyu Technology Development Co ltd
Current assignee: Guangzhou Taiyu Technology Development Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-03-08
Anticipated expiration: 2031-07-28

Abstract

The utility model provides a louvered muffler device which comprises a muffler plate body, wherein the muffler plate body comprises a first muffler plate, a second muffler plate and a third muffler plate, a first cavity is formed between the first muffler plate and the second muffler plate, the other side of the second muffler plate is also provided with the third muffler plate, and a second cavity is formed between the second muffler plate and the third muffler plate; a plurality of silencing holes are uniformly distributed on the first silencing plate, and corresponding silencing blades are also arranged in the silencing holes; the outer side wall of the second silencing plate close to the first chamber is also provided with a plurality of non-planar silencing lugs. The utility model has simple structure and good noise elimination effect, and can realize the great weakening of noise through the noise elimination louver blades, and simultaneously, the utility model not only can realize the reflection of noise through the non-planar noise elimination convex blocks, but also can realize the absorption of noise through the sound absorption material in the noise elimination louver blades, thereby further increasing the noise elimination effect.

Description

Louvered muffler device

Technical Field

The utility model relates to the technical field of noise reduction, in particular to a louvered noise eliminator.

Background

With the progress of society and the development of cities, the living standard of people is continuously improved, and urban traffic becomes a problem which is most closely related to people. The construction of a large number of highways and the traffic of urban light rails and high-speed railways bring great convenience to people for traveling, but residents living near the highways, the light rails and the high-speed rails suffer from the influence of traffic noise. In order to improve the living environment of citizens, various sound-absorbing barriers are installed on the two sides of roads and around the lines of light rails, high-speed rails and the like in related departments.

The existing sound absorption barrier plate is generally provided with a panel and a back plate, the panel and the back plate both adopt flat plate structures, the panel is provided with silencing holes, a framework is arranged between the panel and the back plate, and a porous sound absorption material is arranged between the frameworks. However, with the development trend of thinner and thinner panel materials of the front panel and the back panel, the strength of the sound-absorbing barrier panel is also more and more concerned by designers.

To solve this problem, the density and strength of the skeleton are generally increased, but this increases the amount of material used, and the weight of the barrier panel is also increased.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a louvered muffler device.

The technical scheme of the utility model is as follows: a louvered noise eliminator comprises a noise elimination plate body, wherein the noise elimination plate body comprises a first noise elimination plate, a second noise elimination plate and a third noise elimination plate, a first cavity is formed between the first noise elimination plate and the second noise elimination plate, the third noise elimination plate is further arranged on one side, away from the first noise elimination plate, of the second noise elimination plate, and a second cavity is formed between the second noise elimination plate and the third noise elimination plate;

the outer side wall of the first silencing plate is an arc-shaped surface, a plurality of silencing holes are uniformly distributed on the arc-shaped surface of the first silencing plate, and a corresponding silencing blade is also arranged in each silencing hole;

the silencing blades protrude out of the silencing holes or are concavely arranged in the silencing holes;

the outer side wall of the second sound-absorbing plate close to the first chamber is also provided with a plurality of non-planar sound-absorbing lugs.

Preferably, the first silencing plate is a louvered metal sound insulation plate.

Preferably, the silencing blades of the louvered metal sound insulation plate are arranged in a straight line or at an angle of 30-45 degrees with the horizontal plane.

Preferably, the noise elimination blades of the louvered metal noise insulation plate are strip-shaped noise elimination blades or oval noise elimination blades.

Preferably, the plurality of non-planar sound damping protrusions form a wave-shaped structure or a zigzag structure.

Preferably, each non-planar sound attenuation convex block is filled with sound absorption materials, and the sound absorption materials are glass wool, rock wool or mineral wool.

Preferably, the first silencing plate, the second silencing plate and the third silencing plate are clamped together through a plurality of U-shaped clamping plates.

Preferably, the second sound-absorbing plate is a metal sound-absorbing plate, and the third sound-absorbing plate is a metal sound-absorbing plate or a transparent sound-absorbing plate.

Preferably, a plurality of criss-cross partition plates are arranged in the second chamber, the second chamber is divided into a plurality of independent chambers by the partition plates, and the partition plates are sound insulation strips.

Preferably, the chambers are square or triangular, and sound-absorbing materials are filled in each chamber, wherein the sound-absorbing materials are glass wool, rock wool or mineral wool.

The utility model has the beneficial effects that:

1. the utility model has simple structure and good noise elimination effect, and the noise can be greatly weakened through the noise elimination louver blades, meanwhile, the reflection of the noise can be realized through the non-planar noise elimination convex blocks, and the absorption of the noise can also be realized through the sound absorption material in the noise elimination louver blades, thereby further increasing the noise elimination effect;

2. according to the utility model, the second absorption is realized through the sound absorption material in the first cavity, and the separation of unabsorbed noise is realized through the plurality of sound-absorbing plates, so that the sound-absorbing effect is further improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a first muffler plate according to the present invention;

FIG. 3 is a schematic structural view of another embodiment of the first muffler plate according to the present invention;

FIG. 4 is a schematic structural view of a second muffler plate according to the present invention;

FIG. 5 is a schematic structural view of another embodiment of a second acoustical panel of the present invention;

in the figure, 1-a first sound-absorbing plate, 2-a second sound-absorbing plate, 3-a third sound-absorbing plate, 4-a first chamber, 5-a second chamber, 6-a sound-absorbing blade, 7-a sound-absorbing bump, 8-a U-shaped clamping plate and 9-a clapboard.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1, the present embodiment provides a louvered muffler device, including a muffler plate body, in the present embodiment, an outer side of the muffler plate body is fixedly connected to a frame, the muffler plate body includes a first muffler plate 1, a second muffler plate 2, and a third muffler plate 3, which are disposed in the frame, a first chamber 4 is disposed between the first muffler plate 1 and the second muffler plate 2, a third muffler plate 3 is further disposed on a side of the second muffler plate 2 away from the first muffler plate 1, and a second chamber 5 is disposed between the second muffler plate 2 and the third muffler plate 3.

Preferably, in this embodiment, the upper end surface of the first muffling plate 1 is an arc surface or a plane, and a plurality of muffling holes are uniformly distributed on the upper end surface of the first muffling plate 1, in this embodiment, each muffling hole is further provided with a corresponding muffling blade 6; in this embodiment, the silencing vanes 6 protrude out of the silencing holes or are concavely arranged in the silencing holes. In this embodiment, the first muffling plate 1 is a louvered metal muffling plate. The silencing blades 6 of the louvered metal sound insulation plate are linearly arranged or arranged at an angle of 30-45 degrees with the horizontal plane. In addition, the noise elimination blade 6 of the louvered metal noise insulation plate described in this embodiment is a strip-shaped noise elimination blade or an oval-shaped noise elimination blade, which can be specifically seen from fig. 2 and 3.

Preferably, the second sound-absorbing plate 2 is further provided with a plurality of non-planar sound-absorbing bumps 7 on the outer side wall close to the first chamber 4. In this embodiment, a plurality of the non-planar sound-damping projections 7 form a wave-shaped structure or a zigzag structure. As shown in fig. 4 and 5, each of the non-planar sound-absorbing bumps 7 is further filled with a sound-absorbing material, which is glass wool, rock wool, or mineral wool.

Preferably, in this embodiment, the frame is a U-shaped clamping plate 8, the first muffling plate 1, the second muffling plate 2 and the third muffling plate 3 are fastened together through a plurality of U-shaped clamping plates 8, the U-shaped clamping plate 8 is provided with a U-shaped groove along the length direction, and the first muffling plate 1, the second muffling plate 2 and the third muffling plate 3 are fastened in the U-shaped groove.

Preferably, in this embodiment, the second sound-absorbing plate 2 is a metal sound-absorbing plate, and the third sound-absorbing plate 3 is a metal sound-absorbing plate or a transparent sound-absorbing plate.

Preferably, in the present embodiment, a plurality of criss-cross partition plates 9 are disposed in the second chamber 5, the partition plates 9 divide the second chamber 5 into a plurality of independent chambers, and the partition plates 9 are sound-proof strips. The chambers are square or triangular, sound absorption materials are filled in each chamber, and the sound absorption materials are glass wool, rock wool or mineral wool.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as hereinafter claimed.

Claims

1. A louvered muffler device is characterized by comprising a muffler plate body, wherein the outer side of the muffler plate body is fixedly connected with a frame, the muffler plate body comprises a first muffler plate (1), a second muffler plate (2) and a third muffler plate (3) which are arranged in the frame, a first cavity (4) is arranged between the first muffler plate (1) and the second muffler plate (2), the third muffler plate (3) is arranged on one side, far away from the first muffler plate (1), of the second muffler plate (2), and a second cavity (5) is arranged between the second muffler plate (2) and the third muffler plate (3);

the upper end surface of the first silencing plate (1) is an arc surface or a plane, a plurality of silencing holes are uniformly distributed on the upper end surface of the first silencing plate (1), and a corresponding silencing blade (6) is also arranged in each silencing hole;

the outer side wall of the second silencing plate (2) close to the first chamber (4) is also provided with a plurality of non-planar silencing lugs (7).

2. A louvered muffling device, according to claim 1, wherein: the first silencing plate (1) is a louvered metal sound insulation plate.

3. A louvered muffling device, according to claim 1, wherein: the silencing vanes (6) are arranged outside the silencing holes or in the silencing holes in a concave mode.

4. A louvered muffling device according to claim 2, wherein: the noise elimination blades (6) of the louvered metal noise insulation plate are arranged in a straight line or at an angle of 30-45 degrees with the horizontal plane.

5. A louvered muffling device according to claim 4, wherein: the noise elimination blades (6) of the louvered metal noise insulation plate are strip-shaped noise elimination blades or oval noise elimination blades.

6. A louvered muffling device, according to claim 1, wherein: a plurality of the non-planar sound attenuation projections (7) form a wave-shaped structure or a sawtooth-shaped structure.

7. A louvered muffling device according to claim 6, wherein: and sound absorption materials are filled in each non-planar sound attenuation convex block (7), and are glass wool, rock wool or mineral wool.

8. A louvered muffling device, according to claim 1, wherein: the frame be a plurality of U type cardboard (8), every U type cardboard (8) be provided with U type groove along length direction, first anechoic board (1), second anechoic board (2), third anechoic board (3) through the U type groove joint of a plurality of U type cardboard (8).

9. A louvered muffling device of claim 8, wherein: the second sound-absorbing plate (2) is a metal sound-absorbing plate, and the third sound-absorbing plate (3) is a metal sound-absorbing plate or a transparent sound-absorbing plate.

10. A louvered muffling device, according to claim 1, wherein: a plurality of criss-cross clapboards (9) are arranged in the second chamber (5), the second chamber (5) is divided into a plurality of independent chambers by the clapboards (9), and the clapboards (9) are sound insulation strips;

the chambers are square or triangular, sound absorption materials are filled in each chamber, and the sound absorption materials are glass wool, rock wool or mineral wool.