CN201225325Y - Plastic axial cooling fan - Google Patents
Plastic axial cooling fan Download PDFInfo
- Publication number
- CN201225325Y CN201225325Y CNU200820036358XU CN200820036358U CN201225325Y CN 201225325 Y CN201225325 Y CN 201225325Y CN U200820036358X U CNU200820036358X U CN U200820036358XU CN 200820036358 U CN200820036358 U CN 200820036358U CN 201225325 Y CN201225325 Y CN 201225325Y
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- CN
- China
- Prior art keywords
- blade
- cooling fan
- root
- axial flow
- utility
- 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 plastic axial flow cooling fan which comprises a hub housing (1), vanes (2) and an outer ring (3), wherein the diameter D of the cooling fan is 345 mm; the vanes (2) gradually increase from the root tip chord length and are distributed by a nonlinear way; the vane tip incidence is 19.4 degrees, the vane root incidence is 35.5 degrees, and the relative torsion angle is 16.1 degrees. The utility model has the advantages of high efficiency, static pressure increase, low noise, light weight, and the like.
Description
Technical field
The utility model relates to a kind of axial fan, the plastic shaft flow fan that especially a kind of aerodynamic characteristic excellence and noise are low.
Background technique
Plastics axial flow cooling fan, much in daily life, be applied to produce desk fan and the ventilating fan that certain flow is a purpose.The static pressure of general plastic fan rises all smaller, and mainly to produce dynamic pressure, the size of simultaneously general plastic fan is littler than ventilator for fan, for avoiding too high noise, its tip speed is also all smaller, therefore, the reynolds' number of blade real work is all less, and fan efficiency is also lower.
Summary of the invention
The purpose of this utility model then is the problem that exists at above-mentioned prior art, and a kind of efficient height, static pressure rising, low, the lightweight plastics axial flow of noise cooling fan are provided.
The purpose of this utility model can reach by following measure:
A kind of plastics axial flow cooling fan comprises hub 1, blade 2 and outer ring 3, it is characterized in that: blade 2 adopts little relative thickness 3～5%, and low reynolds number is not more than 1 * 10
5Efficient aerofoil profile, blade 2 is progressively increased by tip of a root chord length and is nonlinear Distribution; The blade tip established angle is 19.4 °, and the blade root established angle is 35.5 °, and relative torsional angle is 16.1 °.
The purpose of this utility model can also reach by following measure:
Impeller diameter D=345MM, blade root chord length: B
Root=68mm, B
Point=80mm;
Advantage of the present 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 outline drawing of the utility model plastic cooling fan.
Fig. 2 is the outer chart of the utility model blade.
Fig. 3 is the sectional view of the chord of blade of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
The utility model is made up of hub 1, blade 2 and outer ring 3.Hub 1 center links to each other with drive motor, and the outside of hub 1 links to each other with blade 2.And the outside of blade 2 links to each other with outer ring 3.By hub driven by motor blade 2 and outer ring 3 are rotated by certain turning to speed.Blade 2 is main bodys of fan, and the number of its yardstick and geometric shape and blade 2 has the influence of decision to performance.For improving fan efficiency and reducing noise, blade 2 of the present utility model has following feature:
The effective diameter of this fan is D=345mm.There is different established angles in blade 2 cross sections at different radii place with respect to plane of rotation, (be blade 2 have relatively reverse), blade tip reverses 16.1 ° with respect to blade root, and torsional angle and radius are nonlinear change, root reverses greatly, the tip is reversed little, all is in efficacious workaround in each blade 2 each cross section of fan design state.Blade 2 each cross section torsional center place the mid point of the aerofoil profile string of a musical instrument.
Torsional centre 6 lines in same blade 2 each cross section are curve, are 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 variation between the axle center of torsional centre line 4 relative fans and blade 2 root torsional centres with the noise of reduction fan, and has better aerodynamic characteristic;
Each blade 2 established angle is nonlinear change, and blade angle is 19.4 °, and the blade root established angle is 35.5 °
For making blade 2 have higher static pressure liter, the unlikely again solidity that increases blade 2 too much, bigger in the most advanced and sophisticated chord length of the blade 2 in the efficient district of fan than the root chord length, blade 2 chord lengths along exhibition to being nonlinear Distribution: B
Root=68mm, B
Point=80mm.This plane shape not only helps alleviating of blade 2 weight, more helps reducing the structure weight of hub 1, and less to the adverse effect of the pneumatic efficiency of undersized fan.
The utility model number of blade is 7 leaves, and outer ring 3 not only has to such an extent that improve the strength and stiffness of fan and the pneumatic efficiency of favourable raising fan.
Claims (3)
1. a plastics axial flow cooling fan comprises hub (1), blade (2) and outer ring (3), it is characterized in that blade (2) adopts little relative thickness 3-5%, and low reynolds number is not more than 1 * 10
5Efficient aerofoil profile, blade (2) is progressively increased by tip of a root chord length and is nonlinear Distribution; The blade tip established angle is 19.4 °, and the blade root established angle is 35.5 °, and relative torsional angle is 16.1 °.
2. plastics axial flow cooling fan according to claim 1 is characterized in that impeller diameter D=345MM, blade root chord length: B
Root=68mm, B
Point=80mm.
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 along radius with root chord mid point and rotation centerline line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820036358XU CN201225325Y (en) | 2008-06-05 | 2008-06-05 | Plastic axial cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820036358XU CN201225325Y (en) | 2008-06-05 | 2008-06-05 | Plastic axial cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225325Y true CN201225325Y (en) | 2009-04-22 |
Family
ID=40598211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820036358XU Expired - Lifetime CN201225325Y (en) | 2008-06-05 | 2008-06-05 | Plastic axial cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225325Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922471A (en) * | 2010-09-30 | 2010-12-22 | 重庆长安汽车股份有限公司 | Fan blade of cooling fan of engine |
| CN102182704A (en) * | 2011-02-14 | 2011-09-14 | 重庆长安汽车股份有限公司 | Fan blade of cooling fan with large flow rate |
| CN117028312A (en) * | 2023-08-16 | 2023-11-10 | 深圳市百越汽车科技有限公司 | Impeller structure and fan |
-
2008
- 2008-06-05 CN CNU200820036358XU patent/CN201225325Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922471A (en) * | 2010-09-30 | 2010-12-22 | 重庆长安汽车股份有限公司 | Fan blade of cooling fan of engine |
| CN102182704A (en) * | 2011-02-14 | 2011-09-14 | 重庆长安汽车股份有限公司 | Fan blade of cooling fan with large flow rate |
| CN117028312A (en) * | 2023-08-16 | 2023-11-10 | 深圳市百越汽车科技有限公司 | Impeller structure and fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU LIVON AUTOMOBILE COMPONENTS TECHNOLOGY CO. Free format text: FORMER OWNER: NANJING LIVON NEW TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20120528 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120528 Address after: 211178 Jiangsu city of Nanjing province Jiangning Binjiang Development Zone, Jin Road No. 9 Patentee after: Jiangsu Livon Automobile Components Technology Co., Ltd. Address before: 211178 Jiangsu city of Nanjing province Jiangning Binjiang Development Zone, Jin Road No. 9 Patentee before: Nanjing Livon New Technology Development Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090422 |
|
| CX01 | Expiry of patent term |