CN2622440Y - Plastic axial flow cooling fan - Google Patents
Plastic axial flow cooling fan Download PDFInfo
- Publication number
- CN2622440Y CN2622440Y CN 03222468 CN03222468U CN2622440Y CN 2622440 Y CN2622440 Y CN 2622440Y CN 03222468 CN03222468 CN 03222468 CN 03222468 U CN03222468 U CN 03222468U CN 2622440 Y CN2622440 Y CN 2622440Y
- Authority
- CN
- China
- Prior art keywords
- blade
- angle
- root
- cooling fan
- axial flow
- 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
A plastic axial flow cooling fan comprising a hub (1), a blade (2) and an outer ring (3), is characterized in that the shape blade (2) is aerofoil with a high effeciency adopting a relative small thickness of 3-5 percent and the a low Reynolds of being less than or equal to 1 multiplied by 10<5>; the blade (2) increases progressively from the chord length of root tip and presents non linear distribution; the blade tip angle is 13.8degrees-15.8degrees, the blade root angle is 28.3degrees-30.3degrees, the relative twisting angle is 13.5degrees-15.5degrees, and the sweep forward (5) of blade (2) is 0-47degrees. The utility model has the advantages of high efficiency, high static pressure rise, low noise and light weight.
Description
Technical field
The utility model belongs to the liquid machine field, specifically a kind of six leaf plastics axial flow cooling fans.
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
5Under efficient aerofoil profile, blade 2 is progressively increased by tip of a root chord length and is nonlinear Distribution; The blade tip established angle is 13.8 °-15.8 °, and the blade root established angle is 28.3 °-30.3 °, and relative torsional angle is 13.5 °-15.5 °, and blade 2 sweepforward angles 5 are 0-47 °.
The purpose of this utility model can also reach by following measure:
Impeller diameter D=375MM, blade root chord length: B
Root=55mm, B
Point=76mm;
Blade 2 sweepforward angles 5 are that benchmark is nonlinear change along radius with root chord mid point and rotation centerline line.
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 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 1 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=375mm.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 14.5 ° 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.
Each blade 2 established angle is nonlinear change, blade angle is 14.8 °, the blade root established angle be 29.3 ° for to make blade 2 have higher static pressure liter, the unlikely again solidity that increases blade 2 too much, most advanced and sophisticated chord length at the blade 2 in the efficient district of fan is bigger than the root chord length, blade 2 chord lengths along exhibition to being nonlinear Distribution: B
Root=55mm, B
Point=76mm.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.
Blade 2 adopts little relative thickness 3～5%, and low reynolds number is not more than 1 * 10
5Under have efficiently that aerofoil profile has the ratio that rises higher/hinder, and because of it has less relative thickness, thereby alleviated structure weight.
The utility model number of blade is 6 leaves, the strength and stiffness of the not only favourable raising fan in outer ring 3, 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
5Under efficient aerofoil profile, blade (2) is progressively increased by tip of a root chord length and is nonlinear Distribution; The blade tip established angle is 13.8 °-15.8 °, and the blade root established angle is 28.3 °-30.3 °, and relative torsional angle is 13.5 °-15.5 °, and blade (2) sweepforward angle (5) is 0-47 °.
2. plastics axial flow cooling fan according to claim 1 is characterized in that impeller diameter D=375MM, blade root chord length: B
Root=55mm, B
Point=76mm.
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 |
|---|---|---|---|
| CN 03222468 CN2622440Y (en) | 2003-06-06 | 2003-06-06 | Plastic axial flow cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03222468 CN2622440Y (en) | 2003-06-06 | 2003-06-06 | Plastic axial flow cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622440Y true CN2622440Y (en) | 2004-06-30 |
Family
ID=34245267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03222468 Expired - Fee Related CN2622440Y (en) | 2003-06-06 | 2003-06-06 | Plastic axial flow cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622440Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101911706B1 (en) * | 2012-02-29 | 2018-10-25 | 엘지전자 주식회사 | Axial fan and air conditioner having the same |
| CN110319057A (en) * | 2019-07-18 | 2019-10-11 | 江阴市精亚风机有限公司 | A kind of front bended sweepforward fills formula blade, impeller and its axial flow blower partially |
| CN110925072A (en) * | 2019-12-05 | 2020-03-27 | 南充工塑零部件有限公司 | Aileron type engine fan |
-
2003
- 2003-06-06 CN CN 03222468 patent/CN2622440Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101911706B1 (en) * | 2012-02-29 | 2018-10-25 | 엘지전자 주식회사 | Axial fan and air conditioner having the same |
| CN110319057A (en) * | 2019-07-18 | 2019-10-11 | 江阴市精亚风机有限公司 | A kind of front bended sweepforward fills formula blade, impeller and its axial flow blower partially |
| CN110319057B (en) * | 2019-07-18 | 2024-04-26 | 江苏精亚风机有限公司 | Forward bending forward-swept offset blade, impeller and axial flow fan thereof |
| CN110925072A (en) * | 2019-12-05 | 2020-03-27 | 南充工塑零部件有限公司 | Aileron type engine fan |
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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: 20040630 |