CN210951715U - Low noise booster fan case - Google Patents
Low noise booster fan case Download PDFInfo
- Publication number
- CN210951715U CN210951715U CN201922021446.3U CN201922021446U CN210951715U CN 210951715 U CN210951715 U CN 210951715U CN 201922021446 U CN201922021446 U CN 201922021446U CN 210951715 U CN210951715 U CN 210951715U
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- booster fan
- fan box
- noise
- low
- noise reduction
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Abstract
The utility model discloses a low-noise booster fan box, which belongs to the technical field of ventilation; the low-noise booster fan box is characterized in that an air inlet pipe of the booster fan box is connected with an air inlet of the booster fan box, and an air outlet of the booster fan box is connected with an air supply pipe; the booster fan is arranged in the booster fan box; the silencing cotton layer is adhered to the inner wall of the booster fan box, and a layer of denoising pore plate is fixed next to the silencing cotton in the booster fan box to form the low-noise booster fan box. The utility model has simple structure and low cost; the adopted noise reduction measures are simple and effective, the noise sound waves are subjected to the noise reduction process of twice through mutual offset and absorption, the noise reduction effect is obvious, the overall heat preservation effect is not influenced, the noise is greatly reduced, and the ground step that the work of staff is not influenced is achieved.
Description
Technical Field
The utility model belongs to the technical field of the ventilation, in particular to low noise booster fan case.
Background
The booster fan box is designed for improving insufficient air volume in an air duct system, the research and development of the booster fan box improve the living environment of people, increase the air volume of fresh air sent into a room and improve the indoor oxygen content. However, the booster fan box mainly plays a role in boosting, and the outlet pressure is too high, so that the overall noise is too high, serious people even cannot work normally, and the purpose of integrally designing the booster fan box is difficult to achieve. In response to such a situation, it is necessary to take measures to effectively reduce the noise to a normal range. In view of this, the ordinary heat preservation cotton that pastes in the booster fan case originally only keeps warm, in order to satisfy customer's requirement, thereby provides the measure of effective noise reduction, reduces the technique of booster fan case noise.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low-noise booster fan box aiming at the defects of the prior art, which is characterized in that the structure of the low-noise booster fan box is that the a end of the air inlet pipe 1 of the booster fan box is connected with the air inlet b of the booster fan box 2, and the air outlet c of the booster fan box 2 is connected with the d end of the blast pipe 6; the booster fan is arranged in the booster fan box 2; the silencing cotton layer 3 is adhered to the inner wall of the booster fan box 2 to form a silencing cotton layer for absorbing noise; and a layer of noise reduction pore plate 5 is fixed next to the noise reduction cotton in the booster fan box to form the low-noise booster fan box.
The noise reduction pore plate is regularly or irregularly provided with step holes 4, the large holes of the step holes face the booster fan, and the small hole faces of the step holes are close to the noise reduction cotton layer.
The thickness of the sound attenuation cotton layer is 10-20mm; a commercially available flame-retardant environment-friendly triangular groove silencing cotton plate is adopted.
The noise reduction hole plate is 10-20mm thick and is made of a temperature-resistant and flame-retardant composite plate or an iron and aluminum plate.
Drawings
FIG. 1 is a schematic view of a low noise booster fan box.
Detailed Description
The utility model provides a low noise booster fan case, it is right below combining the figure and the embodiment the utility model discloses explain.
Fig. 1 is a schematic structural view of a low-noise booster fan box. The structure of the low-noise booster fan box shown in the figure is that the end a of an air inlet pipe 1 of the booster fan box is connected with the air inlet b of the booster fan box 2, and the air outlet c of the booster fan box 2 is connected with the end d of an air supply pipe 6; the booster fan is arranged in the booster fan box 2; the silencing cotton layer 3 is adhered to the inner wall of the booster fan box 2 to form a silencing cotton layer for absorbing noise; and a layer of noise reduction pore plate 5 is fixed next to the noise reduction cotton in the booster fan box to form the low-noise booster fan box. The step holes 4 are regularly or irregularly arranged on the noise reduction pore plate, the large holes of the step holes face the booster fan, and the small hole faces of the step holes are close to the noise reduction cotton layer.
The thickness of the sound attenuation cotton layer is 10-20mm, and a commercially available flame-retardant environment-friendly triangular groove sound attenuation cotton plate is adopted.
The noise reduction hole plate is 10-20mm thick and is made of a temperature-resistant and flame-retardant composite plate or an iron and aluminum plate.
The embodiment, the measure and the principle for reducing the noise in the booster fan box,
the booster fan box is designed to meet the requirement of insufficient air volume in a ventilation pipeline, and the booster fan in the booster fan box is used for improving the air volume in an air duct system so as to enable the air volume to meet the requirement. However, the supercharging fan box has too high supercharging pressure, so that the noise is too high, and the working of staff is possibly influenced; therefore, measures taken by the inventor for reducing the noise in the booster fan box include:
1) replacing the heat insulation cotton in the original booster fan box 2 with the silencing cotton, and adhering the silencing cotton on the inner wall of the booster fan box to form a silencing cotton layer for absorbing noise; the sound attenuation cotton layer 3 is a porous sponge body, and when noise sound waves generated by the booster fan reach the sound attenuation cotton layer, partial sound waves are absorbed, so that the noise in the booster fan box is reduced;
2) a layer of noise reduction pore plate 5 is fixed next to the noise reduction cotton layer 3 in the booster fan box; the noise reduction pore plate is regularly or irregularly provided with step holes 4, the large holes of the step holes face the booster fan, and the small hole faces of the step holes are close to the noise reduction cotton layer 3; noise sound waves generated by the booster fan are transmitted to the noise reduction pore plate 5 and are randomly reflected by the wall of the step hole in the step hole 4, and most of the reflected sound waves are mutually offset; thereby reducing noise; part of sound waves penetrating through the step holes are absorbed by the sound attenuation cotton layer, so that the noise is further reduced; the booster fan generates noise sound waves and the noise reduction process is carried out twice after the noise sound waves are mutually counteracted and absorbed, so that the noise is greatly reduced, and the ground step that the work of staff is not influenced is achieved.
Claims (4)
1. A low-noise booster fan box is characterized in that the low-noise booster fan box is structurally characterized in that the end a of an air inlet pipe (1) of the booster fan box is connected with an air inlet (b) of a booster fan box (2), and an air outlet (c) of the booster fan box (2) is connected with the end d of an air supply pipe (6); the booster fan is arranged in the booster fan box (2); the sound attenuation cotton layer (3) is adhered to the inner wall of the booster fan box (2) to form a sound attenuation cotton layer for absorbing noise; a layer of noise reduction pore plate (5) is fixed next to the noise reduction cotton in the booster fan box to form the low-noise booster fan box.
2. The low-noise booster fan box as claimed in claim 1, wherein the noise reduction pore plate is provided with regular or irregular stepped holes (4), the large hole of the stepped holes faces the booster fan, and the small hole of the stepped holes faces the sound absorption cotton layer.
3. The low-noise booster fan box of claim 1, wherein the sound-deadening cotton layer has a thickness of 10-20mm and is made of a commercially available flame-retardant environment-friendly triangular groove sound-deadening cotton board.
4. The low-noise booster fan box according to claim 1, wherein the noise reduction hole plate has a thickness of 10-20mm and is made of a temperature-resistant and flame-retardant composite plate or an iron-aluminum plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922021446.3U CN210951715U (en) | 2019-11-21 | 2019-11-21 | Low noise booster fan case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922021446.3U CN210951715U (en) | 2019-11-21 | 2019-11-21 | Low noise booster fan case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210951715U true CN210951715U (en) | 2020-07-07 |
Family
ID=71372785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922021446.3U Active CN210951715U (en) | 2019-11-21 | 2019-11-21 | Low noise booster fan case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210951715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539502A (en) * | 2020-12-12 | 2021-03-23 | 浙江巨运管业有限公司 | Pipeline supercharging device for fresh air system |
-
2019
- 2019-11-21 CN CN201922021446.3U patent/CN210951715U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539502A (en) * | 2020-12-12 | 2021-03-23 | 浙江巨运管业有限公司 | Pipeline supercharging device for fresh air system |
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