CN202209312U - Low-noise axial flow fan structure - Google Patents
Low-noise axial flow fan structure Download PDFInfo
- Publication number
- CN202209312U CN202209312U CN2011202898779U CN201120289877U CN202209312U CN 202209312 U CN202209312 U CN 202209312U CN 2011202898779 U CN2011202898779 U CN 2011202898779U CN 201120289877 U CN201120289877 U CN 201120289877U CN 202209312 U CN202209312 U CN 202209312U
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- CN
- China
- Prior art keywords
- axial flow
- noise
- flow fan
- low
- fan blade
- 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 - Fee Related
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Abstract
The utility model relates to a low-noise axial flow fan structure, which can effectively reduce the noise generated when an axial flow fan works. A fan blade in the fan structure is in an equal-thickness thin board conical curve wing shape which sweeps forwards along the circumferential direction and is bent along the radial direction, the angle between the fan blade and the end surface of a wheel hub ranges from 20 degrees to 45 degrees, the air volume can reach 8000 m3/h when the axial flow fan works, and the noise is less than 72 dB, the static pressure is 180 Pa to 230 Pa, the efficiency reaches higher than 84%. The low noise axial flow fan structure has the advantages of simple process, low noise, high efficiency and the like.
Description
Technical field
The utility model relates to a kind of propeller fan structure, especially a kind of low noise propeller fan structure.
Background technique
Along with the continuous development of railway traffic, in the market to train air-conditioning with axial-flow blower require increasingly high.Train air-conditioning has two kinds with axial-flow fan blade is wing at present: a kind of is airfoil, and another kind is that equal thickness thin plate circular arc is wing.The airfoil blade noise is low, and efficient is higher relatively, but complex process, and fabricating cost is higher; Equal thickness thin plate circular arc vane blower fan technology is simple, but efficient is low, and noise is big.
Summary of the invention
The purpose of the utility model is that a kind of efficient of design is high, the low noise propeller fan structure that noise is low.The technological scheme of the utility model is so to realize:
A kind of low noise propeller fan structure; Comprise motor, electric machine support, fan blade, wheel hub, casing, end cap; The equal thickness thin plate conical section that fan blade is circumferential forward sweep, radially bend is wing, and the angle of fan blade and wheel hub end face is 20 °～45 °.
As preferably, the quantity of said fan blade is 5～13.
A kind of low noise propeller fan structure of the utility model design; The equal thickness thin plate conical section that the fan blade that is comprised is circumferential forward sweep, radially bend is wing; The angle of fan blade and wheel hub end face is 20 °～45 °, and air quantity can reach 8000m during work
3/ h, noise be less than 72dB, static pressure 180Pa～230Pa, and efficient reaches more than 84%, and it is low to have remedied circular arc vane efficient, the deficiency that the airfoil blade cost is high, therefore, characteristics such as it is simple to the utlity model has technology, and noise is little, and efficient is high, and cost is low.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model
Accompanying drawing 2 is right elevations of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing 1, accompanying drawing 2,, do further bright specifically to the technological scheme of the utility model through embodiment.
Embodiment: with reference to accompanying drawing 1, accompanying drawing 2; A kind of low noise propeller fan structure; Comprise motor 1, electric machine support 2, fan blade 3, wheel hub 4, casing 5, end cap 6; Fan blade 3 is wing for circumferential forward sweep, the equal thickness thin plate conical section that radially bends, and fan blade 3 is 30 ° with the angle of wheel hub 4 end faces, and the quantity of fan blade 3 is 10.
During as installed, earlier casing 5 and electric machine support 2 are used bolt, motor 1 is fixed on the electric machine support 2, be enclosed within wheel hub 4 on the motor shaft, and, at last end cap 6 is fixed on the wheel hub, in case motor leaks with locking nut locking.
Claims (2)
1. low noise propeller fan structure; Comprise motor (1), electric machine support (2), fan blade (3), wheel hub (4), casing (5), end cap (6); It is characterized in that fan blade (3) is wing for circumferential forward sweep, the equal thickness thin plate conical section that radially bends, fan blade (3) is 20 °～45 ° with the angle of wheel hub end face.
2. a kind of low noise propeller fan structure according to claim 1, the quantity that it is characterized in that fan blade (3) is 5～13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202898779U CN202209312U (en) | 2011-08-10 | 2011-08-10 | Low-noise axial flow fan structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202898779U CN202209312U (en) | 2011-08-10 | 2011-08-10 | Low-noise axial flow fan structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209312U true CN202209312U (en) | 2012-05-02 |
Family
ID=45988860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202898779U Expired - Fee Related CN202209312U (en) | 2011-08-10 | 2011-08-10 | Low-noise axial flow fan structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209312U (en) |
-
2011
- 2011-08-10 CN CN2011202898779U patent/CN202209312U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160918 Address after: 311800 Zhejiang city of Shaoxing province Zhuji City Tao Street Millennium Road No. 22 Patentee after: Zhejiang shield rail traffic equipment Co., Ltd. Address before: 311800, No. 21 East Tianyuan Road, straw tower town, Zhejiang, Zhuji Patentee before: SHUANGSHUANG REFRIGERATING APPARATUS CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120502 Termination date: 20170810 |