CN2804445Y - Six-vane axial-flow cooling fan - Google Patents
Six-vane axial-flow cooling fan Download PDFInfo
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- CN2804445Y CN2804445Y CN 200520073586 CN200520073586U CN2804445Y CN 2804445 Y CN2804445 Y CN 2804445Y CN 200520073586 CN200520073586 CN 200520073586 CN 200520073586 U CN200520073586 U CN 200520073586U CN 2804445 Y CN2804445 Y CN 2804445Y
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Abstract
The utility model relates to a cooling fan, particularly a six-vane plastic axial-flow cooling fan, which is composed of a wheel hub, blades and an outer ring. The diameter of the fan is D=305MM, the number of the blades is N=6, the blades adopt a high-efficiency wing type, the design Reynolds number is not greater than 1*10< 5 >, and the relative thickness is 3%-5%. The length of a blade chord is gradually increased from a blade root to a blade tip in nonlinear distribution, the chord length of the blade root is 41.8MM, and the chord length of the blade tip is 76MM. An installing angle of the blades is gradually decreased from the blade root to the blade tip in nonlinear variation, the installing angle of the blade root is 32.2 DEG, the installing angle of the blade tip is 19.1 DEG, and the blade tip corresponding to the blade root twists 13.1 DEG. Sweepforward angles of the blades are gradually increased from the blade root to the blade tip in nonlinear distribution, the sweepforward angle of the blade root is 0 DEG and the sweepforward angle of the blade tip is 47 DEG. Compared with the plastic cooling fan with the same dimension, the utility model has the advantages of high efficiency, low noise, light structural weight and high static pressure coefficient.
Description
Technical field
The utility model relates to a kind of cooling fan, specifically a kind of six leaf plastics axial flow cooling fans.
Background technique
At present, fan is a vitals of cooling system for construction machinery.In each field of national economy, dissimilar fans has the application that has nothing in common with each other, as the large-scale ventilation equipment in the building, be used for the desk fan of cooling system on mine ventilation machine that the tunnel ventilates, tunnel ventilation device, electronic device cooling system, the motor vehicle and daily life and ventilating fan or the like.Current Chinese Automobile Industry ' development rapidly, the requirement aspect technological innovation improves, and cooling fan is as the vitals of automobile cooling system, and radiating effect, noise, fuel economy and the motor power consumption etc. of main frame cooling system are all had a direct impact.The static pressure of general plastic shaft flow fan is all smaller, and fan is to produce dynamic pressure; The size of simultaneously general plastic shaft flow fan is littler than ventilator, and for avoiding too high noise, its tip speed is also all smaller, so the reynolds' number of blade real work is all less, causes fan efficiency lower thus.
Summary of the invention
What the purpose of this utility model was is exactly the problem that exists at above-mentioned prior art, and a kind of efficient height, static pressure rising, low, the lightweight six leaf plastics axial flow cooling fans of noise are provided.
The purpose of this utility model can reach by following measure:
(1) fan is made up of wheel hub, blade and outer ring;
(2) fan diameter is 305mm, number of blade N=6;
(3) blade adopts the design reynolds' number to be not more than in 1 * 10
5, relative thickness is 3～5% efficient aerofoil profile;
(4) the blade chord length is progressively increased to blade tip by blade root and is nonlinear Distribution, blade root chord length 41.8mm, blade tip chord length 76mm;
(5) blade angle is progressively reduced to blade tip by blade root, is nonlinear change, and its blade root established angle is 32.2 °, and the blade tip established angle is 19.1 °, and blade tip is with respect to 13.1 ° of blade root torsion angles;
(6) blade sweepforward angle 5 is progressively increased to blade tip by blade root and is nonlinear Distribution, and the blade root sweepforward angle is 0 °, and the blade tip sweepforward angle is 47 °.
(7) blade 2 sweepforward angles 5 are that benchmark is nonlinear change by blade root to blade tip with root chord mid point and rotating center line.
The beneficial effects of the utility model:
The plastic cooling fan of the utility model and equal yardstick relatively has that efficient height, noise are low, lightweight construction and a high advantage of static pressure coefficient.
Description of drawings
Fig. 1 is the overall structure schematic representation of the utility model plastic cooling fan.
Fig. 2 is the outline drawing of the utility model blade.
Fig. 3 be Fig. 2 blade sectional view.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
The utility model is made up of wheel hub 1, blade 2 and outer ring 3.Wheel hub 1 center links to each other with drive motor, fixedlys connected with blade 2 in the outside of wheel hub 1, and blade 2 is also fixedlyed connected with outer ring 3.Make driven by motor blade 2 and outer ring 3 by certain rotating speed with turn to rotation by wheel hub 1.Blade 2 is main bodys of fan, and its physical dimension, profile and the number of blade have decisive influence to the performance of fan.For improving fan efficiency and reducing noise, blade 2 of the present utility model has following feature:
(1) effective diameter of this fan is 305mm.Blade 2 cross sections at different radial distances place have different established angles with respect to plane of rotation, and promptly blade 2 has relatively and reverses, and each cross section torsional center places the mid point of the aerofoil profile string of a musical instrument.Blade tip reverses 13.1 ° with respect to blade root, and torsion angle is nonlinear change by blade root to blade tip, blade root is reversed greatly (established angle is 32.2 °), and blade tip reverses little (established angle is 19.1 °), thereby makes blade 2 each cross section all be in efficacious workaround under the fan design state.
(2) for to make blade 2 have higher static pressure liter, unlikely again mistake increases the solidity of fan greatly, most advanced and sophisticated chord length at the blade 2 of fan efficacious workaround is bigger than the root chord length, the blade chord length is progressively increased to blade tip by blade root and is nonlinear Distribution, the blade root chord length is 41.8mm, and the blade tip chord length is 76mm.This plane shape not only helps alleviating of blade 2 weight, more helps reducing of wheel hub 1 structure weight, and can improve the aerodynamic efficiency of small size fan.
(3) line of the torsional centre 6 in same blade 2 each cross section is a curve, is called torsional centre line 4.This torsional centre line 4 is positioned at the same plane parallel with plane of rotation; The sweepforward angle 5 that has nonlinear change between the axle center of torsional centre line 4 relative fans and blade 2 root torsional centres with the reduction fan noise, and makes fan have aerodynamic characteristics preferably.The blade root sweepforward angle is 0 °, and the blade tip sweepforward angle is 47 °.
(4) blade adopts the design reynolds' number to be not more than 1 * 10
5, relative thickness is 3～5% efficient aerofoil profile.This aerofoil profile has bigger ratio of lift coefficient to drag coefficient, and because of it has little relative thickness, thereby alleviated the structure weight of fan.
In addition, the utility model fan blade number is 6 leaves.Outer ring 3 not only helps improving the strength and stiffness of fan, and plays the effect that reduces three-dismensional effect, further improves the aerodynamic efficiency of fan, augmented flow.
Claims (3)
1, a kind of plastics axial flow cooling fan comprises wheel hub (1), blade (2) and outer ring (3), it is characterized in that blade (2) adopts the design reynolds' number to be not more than 1 * 10
5, relative thickness is 3～5% efficient aerofoil profile; Blade (2) chord length is progressively increased to blade tip by blade root and is nonlinear Distribution, and the blade root string is 41.8mm, and the blade tip chord length is 76mm; Blade angle progressively reduces to be nonlinear Distribution by blade root to blade tip, and the blade root established angle is 32.2 °, and the blade tip established angle is 19.1 °, and relative torsional angle is 13.1 °; Blade (2) sweepforward angle (5) is progressively increased to blade tip by blade root and is nonlinear Distribution, and the blade root sweepforward angle is 0 °, and the blade tip sweepforward angle is 47 °.
2, plastics axial flow cooling fan according to claim 1 is characterized in that blade (2) number is 6, and impeller diameter is 305mm.
3, plastics axial flow cooling fan according to claim 1 is characterized in that blade (2) sweepforward angle (5) is that benchmark is nonlinear change by blade root to blade tip with root chord mid point and rotating center line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073586 CN2804445Y (en) | 2005-07-13 | 2005-07-13 | Six-vane axial-flow cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073586 CN2804445Y (en) | 2005-07-13 | 2005-07-13 | Six-vane axial-flow cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804445Y true CN2804445Y (en) | 2006-08-09 |
Family
ID=36909737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073586 Expired - Fee Related CN2804445Y (en) | 2005-07-13 | 2005-07-13 | Six-vane axial-flow cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2804445Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041684A (en) * | 2015-08-07 | 2015-11-11 | 黄社兰 | Engineering axial flow cooling plastic fan |
| CN105782111A (en) * | 2016-05-06 | 2016-07-20 | 浙江希尔富电气有限公司 | Blowing type wind wheel of brushless fan |
| CN105805045A (en) * | 2016-05-06 | 2016-07-27 | 浙江希尔富电气有限公司 | Air sucking type wind wheel of brushless draught fan |
| CN106567858A (en) * | 2015-10-08 | 2017-04-19 | 杨士恒 | Light-weight energy-saving axial-flow type tunnel fan |
| CN112797026A (en) * | 2020-12-30 | 2021-05-14 | 上海马陆日用友捷汽车电气有限公司 | Axial-flow type cooling fan matched with family car |
-
2005
- 2005-07-13 CN CN 200520073586 patent/CN2804445Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041684A (en) * | 2015-08-07 | 2015-11-11 | 黄社兰 | Engineering axial flow cooling plastic fan |
| CN106567858A (en) * | 2015-10-08 | 2017-04-19 | 杨士恒 | Light-weight energy-saving axial-flow type tunnel fan |
| CN105782111A (en) * | 2016-05-06 | 2016-07-20 | 浙江希尔富电气有限公司 | Blowing type wind wheel of brushless fan |
| CN105805045A (en) * | 2016-05-06 | 2016-07-27 | 浙江希尔富电气有限公司 | Air sucking type wind wheel of brushless draught fan |
| CN112797026A (en) * | 2020-12-30 | 2021-05-14 | 上海马陆日用友捷汽车电气有限公司 | Axial-flow type cooling fan matched with family car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |