CN218032062U - Noise reduction mechanism for air duct - Google Patents
Noise reduction mechanism for air duct Download PDFInfo
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- CN218032062U CN218032062U CN202221617674.2U CN202221617674U CN218032062U CN 218032062 U CN218032062 U CN 218032062U CN 202221617674 U CN202221617674 U CN 202221617674U CN 218032062 U CN218032062 U CN 218032062U
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Abstract
The utility model discloses a mechanism of making an uproar falls in wind channel is applied to the wind channel and falls the field of making an uproar. The noise reduction device comprises a first direct-wind component, a second direct-wind component and a noise reduction component, wherein the noise reduction component is fixedly arranged on the first direct-wind component and the second direct-wind component; the first straight air assembly comprises a straight air channel and a first sound absorption plate fixedly arranged on the inner wall of the straight air channel; a first fixing bracket for fixing the first sound-absorbing plate and the straight air duct; the noise reduction assembly comprises an elbow sleeved on the straight air duct and a second sound absorption plate fixedly mounted on the inner wall of the elbow; a second fixing bracket for fixing the second sound-absorbing board; the utility model discloses an at the first abatvoix of interior design in straight wind channel to form the air bed between straight wind channel and first abatvoix, when wind in the straight wind channel incides first abatvoix surface, the sound wave can the infiltration micropore get into the air bed, because viscosity and friction that air motion produced, the resistance effect makes the acoustic energy turn into heat energy gradually and consumes, thereby consumes the acoustic energy.
Description
Technical Field
The utility model relates to a mechanism of making an uproar falls in wind channel specifically is mechanism of making an uproar falls in wind channel.
Background
Air ducts, channels for conveying the air flow from one place to another, for example for heating, cooling or ventilation, which is to reduce the concentration of gases or pollutants and to ensure the circulation and interaction of the air.
The existing ventilation device is discharged outwards through the air duct, the air duct generally has a bent part, the air flow speed in the air duct is high, the air flow enables the air duct to vibrate and emit large noise through the bent part of the air duct, people can generate dysphoria emotion in life or work in the environment with large noise, and the air duct is unfavorable to physical and mental activities, so people hope to reduce or eliminate the sound generated in the working process of the air duct, but the air duct structure is not changed and only the mode of reducing the air flow speed is adopted, the noise generated in the working process of the existing air duct can not be reduced, the problem of noise reduction can not be solved in the traditional air duct, when the air flow is out of date, the extremely large noise can be generated, and the normal work and rest of people are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mechanism of making an uproar falls in wind channel to solve the above-mentioned problem that prior art exists.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the air duct noise reduction mechanism comprises a first direct-current component, a second direct-current component and noise reduction components fixedly arranged on the first direct-current component and the second direct-current component;
the first straight air assembly comprises a straight air channel and a first sound absorption plate fixedly arranged on the inner wall of the straight air channel; a first fixing bracket for fixing the first sound-absorbing plate and the straight air duct;
the noise reduction assembly comprises an elbow sleeved on the straight air duct and a second sound absorption plate fixedly mounted on the inner wall of the elbow; a second fixing bracket for fixing the second sound-absorbing panel;
the first direct-wind assembly and the second direct-wind assembly are identical in structure.
The preferred scheme is as follows:
preferably, the following components: the second sound-absorbing board is arranged at the matching position of the straight air duct and the elbow.
Preferably: the elbow is sleeved at the joint of the two straight air channels; and designing a second sound-absorbing board at the matching part of the elbow and the straight air duct, and further reducing the noise of the vibration generated at the bending part.
Preferably: first abatvoix with leave first air bed between the straight wind channel, the second abatvoix with leave the second air bed between the elbow, first air bed with the second air bed intercommunication.
Preferably: the first sound-absorbing plate and the second sound-absorbing plate are provided with a plurality of pores on the surfaces.
Preferably: and sound-insulation sponges are arranged on the surfaces of the first sound-absorbing plate and the second sound-absorbing plate.
Preferably, the following components: the first straight-wind component and the second straight-wind component are vertically arranged, the vertically arranged position is fixed through the elbow, the elbow is in a fan shape, and the elbow is used for communicating the first straight-wind component with the second straight-wind component.
To sum up, the utility model discloses following beneficial effect has:
through the first abatvoix of interior design in straight wind channel to form the air bed between straight wind channel and first abatvoix, when wind in the straight wind channel incided first abatvoix surface, the sound wave can the infiltration micropore gets into the air bed, because viscosity and friction that the air motion produced, the resistance effect makes sonic energy turn into heat energy gradually and consumes, thereby consume the sonic energy, in addition, design the elbow in the quarter turn department of straight wind channel, and at the elbow with straight wind channel cooperation department designs the second abatvoix, and then falls the vibration that produces the bending department and make an uproar.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a straight air duct; 2. an air layer; 3. a first sound-absorbing panel; 4. bending the pipe; 5. a second sound-absorbing panel; 6. a second fixed bracket; 7. a first direct air assembly; 8. and the second direct wind component.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In which like parts are designated by like reference numerals. It should be noted that as used in the following description, the terms "front," "back," "left," "right," "upper," and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner," and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The air duct noise reduction mechanism comprises a first straight wind component 7, a second straight wind component 8 and noise reduction components fixedly arranged on the first straight wind component 7 and the second straight wind component 8 as shown in fig. 1;
the first straight air assembly 7 comprises a straight air channel 1 and a first sound absorption plate 3 fixedly arranged on the inner wall of the straight air channel 1; a first fixing bracket for fixing the first sound-absorbing plate 3 and the straight air duct 1;
the noise reduction assembly comprises an elbow 4 sleeved on the straight air duct 1 and a second sound absorption plate 5 fixedly installed on the inner wall of the elbow 4; a second fixing bracket 6 to which the second sound-absorbing panel 5 is fixed;
the first and second direct- wind assemblies 7 and 8 are identical in structure.
The second sound-absorbing board 5 is arranged at the matching part of the straight air duct 1 and the elbow 4.
The elbow 4 is sleeved at the joint of the two straight air ducts 1; and a second sound-absorbing board 5 is designed at the matching part of the elbow 4 and the straight air duct 1, so that the noise of the vibration generated at the bending part is reduced.
A first air layer 2 is reserved between the first sound-absorbing plate 3 and the straight air duct 1, a second air layer 2 is reserved between the second sound-absorbing plate 5 and the elbow 4, and the first air layer 2 is communicated with the second air layer 2; when wind in the straight air duct 1 is incident on the surface of the first sound-absorbing board 3, sound waves penetrate into the micropores and enter the air layer 2, and sound energy is gradually converted into heat energy to be consumed due to viscosity, friction and resistance generated by air movement, so that the sound energy is consumed.
The first and second sound-absorbing panels 3, 5 are each provided with a plurality of fine holes on their surface, each hole corresponding to a helmholtz resonator.
The first direct-air component 7 and the second direct-air component 8 are vertically arranged, the vertically arranged positions are fixed through the elbow 4, the elbow 4 is in a fan shape, and the elbow 4 is used for communicating the first direct-air component 7 and the second direct-air component 8.
Description of the working principle: firstly, fixing a first sound-absorbing plate 3 and a second sound-absorbing plate 5 at a straight air duct 1 and an elbow 4 through a first fixing bracket and a second fixing bracket 6, forming a first air layer 2 between the straight air duct 1 and the first sound-absorbing plate 3, wherein the surface of the first sound-absorbing plate 3 is provided with a plurality of tiny pores, and each pore is equivalent to a Helmholtz resonator; when wind in the air duct enters the surface of the ultramicropore sound-absorbing plate, sound waves penetrate into the ultramicropore sound-absorbing plate and enter the air layer 2, sound energy is gradually converted into heat energy to be consumed due to the viscosity and the friction resistance generated by the movement of the air, the heat energy is overlapped with the vibration generation frequency to reach the same resonance frequency, so that the sound energy is consumed, the sound-absorbing effect is achieved, the noise is attenuated by 15-20db, and the wind sound at the straight air duct 1 and the elbow 4 is eliminated.
The specific embodiments are only for explaining the present invention, and it is not a limitation to the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present invention.
Claims (7)
1. The air channel noise reduction mechanism comprises a first direct-current component (7) and a second direct-current component (8), and noise reduction components are fixedly arranged on the first direct-current component (7) and the second direct-current component (8);
the method is characterized in that: the first straight wind component (7) comprises a straight wind channel (1) and a first sound absorption plate (3) fixedly mounted on the inner wall of the straight wind channel (1); a first fixing bracket for fixing the first sound-absorbing board (3) and the straight air duct (1);
the noise reduction assembly comprises an elbow (4) sleeved on the straight air duct (1) and a second sound absorption plate (5) fixedly mounted on the inner wall of the elbow (4); a second fixing bracket (6) for fixing the second sound-absorbing plate (5);
the first direct-wind component (7) and the second direct-wind component (8) are identical in structure.
2. The duct noise reduction mechanism of claim 1, wherein: the second sound-absorbing board (5) is arranged at the matching position of the straight air duct (1) and the elbow (4).
3. The duct noise reduction mechanism of claim 2, wherein: the elbow (4) is sleeved at the joint of the two straight air channels (1).
4. The duct noise reduction mechanism of claim 1, wherein: first abatvoix (3) with leave first air bed (2) between straight wind channel (1), second abatvoix (5) with leave second air bed (2) between elbow (4), first air bed (2) with second air bed (2) intercommunication.
5. The duct noise reduction mechanism of claim 1, wherein: and a plurality of pores are arranged on the surfaces of the first sound-absorbing plate (3) and the second sound-absorbing plate (5).
6. The duct noise reduction mechanism of claim 1, wherein: and sound insulation sponges are arranged on the surfaces of the first sound absorption plate (3) and the second sound absorption plate (5).
7. The duct noise reduction mechanism of claim 1, wherein: the first straight wind component (7) and the second straight wind component (8) are vertically arranged, the vertically arranged position is fixed through the elbow (4), the elbow (4) is in a fan shape, and the elbow (4) is communicated with the first straight wind component (7) and the second straight wind component (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221617674.2U CN218032062U (en) | 2022-06-27 | 2022-06-27 | Noise reduction mechanism for air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221617674.2U CN218032062U (en) | 2022-06-27 | 2022-06-27 | Noise reduction mechanism for air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218032062U true CN218032062U (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221617674.2U Active CN218032062U (en) | 2022-06-27 | 2022-06-27 | Noise reduction mechanism for air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218032062U (en) |
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2022
- 2022-06-27 CN CN202221617674.2U patent/CN218032062U/en active Active
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