CN201250799Y - High wind low noise axial fan - Google Patents
High wind low noise axial fan Download PDFInfo
- Publication number
- CN201250799Y CN201250799Y CNU2008201641243U CN200820164124U CN201250799Y CN 201250799 Y CN201250799 Y CN 201250799Y CN U2008201641243 U CNU2008201641243 U CN U2008201641243U CN 200820164124 U CN200820164124 U CN 200820164124U CN 201250799 Y CN201250799 Y CN 201250799Y
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- blade
- leaf blades
- low noise
- fan
- solar
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Abstract
The utility model relates to a fan, in particular to a high wind low noise axial fan, which comprises a central hub, leaf blades and a shroud. The shroud is connected with the central hub through the leaf blades. The utility model is characterized in that air flow guide ribs are arranged on the leaf blades; the air flow guide ribs extend to the rear edges of the leaf blades from the front edges of the leaf blades in the rotation direction, and are arranged in cambered shape. As the air flow guide ribs are arranged on the leaf blades, transient inverted wafers are arranged at the joints between the leaf blades and the shroud, thus increasing the pressure of the central swirling eddy and reducing the eddy noise generated. In this way, the inequality of air flow on both sides of the leaf blades is effectively inhibited, thus reducing the rotation noise and improving the working efficiency of the fan. As the structure of the high wind low noise axial fan is compact through the arrangement, the service life of the fan is prolonged to some extent.
Description
Technical field
The utility model relates to a kind of blower fan, especially a kind of high air quantity low noise axial fan.
Background technique
Commonly used to blower fan in the motor car engine radiation system at present, but in the tail district of the blade trailing edge when operation of the blower fan on the market, the pressure of air-flow and speed all are significantly less than the numerical value of main flow area, air-flow has very big nonuniformity in the blade exit district, and therefore existing blower fan is owing to the fan blade rotation causes that Rotation Noise and eddy current noise that air flows produces are bigger.
Summary of the invention
The purpose of this utility model is, a kind of low noise, high efficiency, long-life high air quantity low noise axial fan are provided.
The utility model is achieved by the following scheme: a kind of high air quantity low noise axial fan, comprise center hub, blade, protect solar or lunar halo, protect between solar or lunar halo and the center hub and be connected by blade, it is characterized in that on blade, being provided with the air-flow guiding rib, the air-flow guiding rib extends to vane trailing edge, curved setting from the leading edge of blade according to the direction of rotating.
This is arranged on the air-flow guiding rib that is provided with arc on the blade according to sense of rotation, when making air flow stream cross axial flow fan vane wheel, reduce because the Radial Flow loss that centrifugal action produces, thereby increased the pressure of center swirling eddy, reduced the probability that trailing vortex forms, produced thereby reduced the whirlpool noise.
Of the present utility modelly further be set to: also be provided with excessive rounding sheet at blade and the joint that protects solar or lunar halo, excessively the rounding sheet is arranged on blade and the angle of protecting the solar or lunar halo joint, and respectively with blade with protect solar or lunar halo and fixedly connected.
This is arranged on blade and is provided with excessive rounding sheet with the joint that protects solar or lunar halo, effectively suppresses the nonuniformity of blade two sidewinds, reduces Rotation Noise.
Said structure is owing to be provided with the air-flow guiding rib on blade, at blade and the joint that protects solar or lunar halo excessive rounding sheet is set, not only increased the pressure of center swirling eddy, reduced the whirlpool generating noise, and effectively suppressed the inequality of blade two sidewinds, thus reduced the noise of rotation, improved the working efficiency of blower fan simultaneously, because such setting is structurally very compact, therefore prolong its life-span to a certain extent.
Description of drawings
Fig. 1 is the structural representation of present embodiment;
Embodiment
With reference to figure 1 as can be known, blower fan comprises the center hub 1 with diameter, a plurality of blades 2, protect solar or lunar halo 3, center hub 1 with protect solar or lunar halo 3 and be connected by blade 2, on blade 2, be provided with air-flow guiding rib 4, be provided with excessive rounding sheet 5 at blade 2 and the joint that protects solar or lunar halo 3, each blade 2 comprises the bottom with theoretical radius and derives to the end of end radius, blade 2 is defined by protruding trailing edge 21 and recessed leading edge 22, comprise air-flow guiding rib 4 on the blade 2, the position of air-flow guiding rib 4 and highly have definite value, trailing edge 21 with protect solar or lunar halo 3 and be connected for the excessive rounding sheet 5 of a certain proportion of R face, air-flow guiding rib 4 extends to trailing edge 21 by leading edge 22 by sense of rotation, approach by protecting solar or lunar halo 3 3/10 place of blade 2 radial width to the inside the position, and excessively the radius of rounding sheet 5 is close to 1/30 of blade 2 radial width.
Claims (2)
1. one kind high air quantity low noise axial fan, comprise center hub, blade, protect solar or lunar halo, protect between solar or lunar halo and the center hub and be connected by blade, it is characterized in that: on blade, be provided with the air-flow guiding rib, the air-flow guiding rib extends to vane trailing edge, curved setting from the leading edge of blade according to the direction of rotating.
2. according to the described high air quantity low noise axial fan of claim 1, it is characterized in that: also be provided with excessive rounding sheet at blade and the joint that protects solar or lunar halo, excessively the rounding sheet is arranged on blade and the angle of protecting the solar or lunar halo joint, and respectively with blade with protect solar or lunar halo and fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201641243U CN201250799Y (en) | 2008-09-08 | 2008-09-08 | High wind low noise axial fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201641243U CN201250799Y (en) | 2008-09-08 | 2008-09-08 | High wind low noise axial fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250799Y true CN201250799Y (en) | 2009-06-03 |
Family
ID=40746473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201641243U Expired - Fee Related CN201250799Y (en) | 2008-09-08 | 2008-09-08 | High wind low noise axial fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250799Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465917A (en) * | 2010-11-05 | 2012-05-23 | 台达电子工业股份有限公司 | Fan structure |
| CN103649548A (en) * | 2011-06-14 | 2014-03-19 | 罗伯特·博世有限公司 | Airflow assembly having improved acoustical performance |
| CN105402160A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力电器股份有限公司 | Fan, axial flow fan blade and blade thereof |
| CN110393839A (en) * | 2014-05-27 | 2019-11-01 | 费雪派克医疗保健有限公司 | Gas mixing and measurement for medical device |
-
2008
- 2008-09-08 CN CNU2008201641243U patent/CN201250799Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102465917A (en) * | 2010-11-05 | 2012-05-23 | 台达电子工业股份有限公司 | Fan structure |
| CN103649548A (en) * | 2011-06-14 | 2014-03-19 | 罗伯特·博世有限公司 | Airflow assembly having improved acoustical performance |
| CN103649548B (en) * | 2011-06-14 | 2017-07-28 | 罗伯特·博世有限公司 | Air-flow component with improved acoustic characteristic |
| US10041505B2 (en) | 2011-06-14 | 2018-08-07 | Robert Bosch Llc | Airflow assembly having improved acoustical performance |
| CN110393839A (en) * | 2014-05-27 | 2019-11-01 | 费雪派克医疗保健有限公司 | Gas mixing and measurement for medical device |
| CN105402160A (en) * | 2015-12-18 | 2016-03-16 | 珠海格力电器股份有限公司 | Fan, axial flow fan blade and blade thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 |