CN201739239U - Fan noise reduction device - Google Patents
Fan noise reduction device Download PDFInfo
- Publication number
- CN201739239U CN201739239U CN2010202743665U CN201020274366U CN201739239U CN 201739239 U CN201739239 U CN 201739239U CN 2010202743665 U CN2010202743665 U CN 2010202743665U CN 201020274366 U CN201020274366 U CN 201020274366U CN 201739239 U CN201739239 U CN 201739239U
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- casing
- enclosure
- reduction pipe
- exhaust outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a fan noise reduction device consisting of an enclosure and an air outlet, wherein the air outlet is arranged on the enclosure; a noise reduction pipe is arranged on the enclosure close to the air outlet; two ends of the noise reduction pipe are connected with the enclosure; and the length of the noise reduction pipe is the same as the width of the enclosure. In the utility model, the enclosure is internally provided with an impeller, the width from the center of the noise reduction pipe to the longitudinal central line of the enclosure is 0.1-0.5 time of the long side of the air outlet, and the height from the center of the noise reduction pipe to the horizontal central line of the enclosure is 0.5-0.6 time of the diameter of the impeller. The fan noise reduction device realizes the purposes of being simple in structure, and low in noise, and avoiding dead corners or backflow formed at the air outlet.
Description
Technical field
The utility model relates to the denoising device of blower fan.
Background technique
The structure of present fan casing, intake grill and exhaust outlet not in one plane do not form dead angle or backflow easily at the exhaust outlet place, make air-out not smooth, cause occurring noise.
Summary of the invention
The utility model purpose provides a kind of simple in structure, avoids at formation dead angle, exhaust outlet place or backflow, the blower fan denoising device that noise is little.
A kind of blower fan denoising device comprises casing, exhaust outlet, and exhaust outlet is arranged on the casing, near on the casing of exhaust outlet the noise reduction pipe is set, and the two ends of described noise reduction pipe are connected with casing, and the length of noise reduction pipe is identical with the casing width.
In the casing of the present utility model impeller is set, the width of the centre distance casing vertical center line of noise reduction pipe is 0.1 to 0.5 times of the long limit of exhaust outlet, and the height of the centre distance casing cross central line of noise reduction pipe is 0.5 to 0.6 times of impeller diameter.
The utility model adopts technique scheme, and compared with prior art have following advantage: blower fan of the present utility model enters wind impeller and drains into exhaust outlet from wind inlet.Inner and a round steel is set on the exhaust outlet direction at described fan casing, with sending from exhaust outlet of the airflow smooth in the fan casing, and noise reduces, and avoids forming dead angle or backflow at the exhaust outlet place, and is simple in structure.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:
As shown in Figure 1, a kind of blower fan denoising device comprises casing 1, exhaust outlet 5, and exhaust outlet 5 is arranged on the casing 1, near on the casing 1 of exhaust outlet 5 noise reduction pipe 2 is set, and the two ends of described noise reduction pipe 2 are connected with casing 1, and the length of noise reduction pipe 2 is identical with the casing width.
As shown in Figure 2, in the casing 1 of the present utility model impeller 4 is set, the width X of centre distance casing 1 vertical center line of noise reduction pipe 2 is 0.1 to 0.5 times of exhaust outlet 5 long limits, and the height Y of centre distance casing 1 cross central line of noise reduction pipe 2 is 0.5 to 0.6 times of impeller 4 diameters.
Blower fan of the present utility model enters wind impeller 4 and drains into exhaust outlet 5 from wind inlet 3.Inner and a round steel 2 is set on the exhaust outlet direction at described fan casing 1, with sending from exhaust outlet 5 of the airflow smooth in the fan casing 1, and noise reduces, and avoids forming dead angle or backflow at exhaust outlet 5 places, and is simple in structure.
Claims (2)
1. blower fan denoising device, comprise casing (1), exhaust outlet (5), exhaust outlet (5) is arranged on the casing (1), it is characterized in that noise reduction pipe (2) being set near on the casing (1) of exhaust outlet (5), the two ends of described noise reduction pipe (2) are connected with casing (1), and the length of noise reduction pipe (2) is identical with the casing width.
2. blower fan denoising device according to claim 1, it is characterized in that being provided with in the said machine casing (1) impeller (4), the width of centre distance casing (1) vertical center line of noise reduction pipe (2) is 0.1 to 0.5 times of the long limit of exhaust outlet (5), and the height of centre distance casing (1) cross central line of noise reduction pipe (2) is 0.5 to 0.6 times of impeller (4) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202743665U CN201739239U (en) | 2010-07-28 | 2010-07-28 | Fan noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202743665U CN201739239U (en) | 2010-07-28 | 2010-07-28 | Fan noise reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739239U true CN201739239U (en) | 2011-02-09 |
Family
ID=43554515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202743665U Expired - Lifetime CN201739239U (en) | 2010-07-28 | 2010-07-28 | Fan noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975197A (en) * | 2010-07-28 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Fan noise reduction device |
-
2010
- 2010-07-28 CN CN2010202743665U patent/CN201739239U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975197A (en) * | 2010-07-28 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Fan noise reduction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |