CN101988522B - Cooling fan - Google Patents
Cooling fan Download PDFInfo
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- CN101988522B CN101988522B CN201010566379A CN201010566379A CN101988522B CN 101988522 B CN101988522 B CN 101988522B CN 201010566379 A CN201010566379 A CN 201010566379A CN 201010566379 A CN201010566379 A CN 201010566379A CN 101988522 B CN101988522 B CN 101988522B
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- wheel hub
- lower edge
- chord
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- wind
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Abstract
The invention discloses a cooling fan. The cooling fan comprises a hub and a plurality of fan blades which are radially distributed around the hub, wherein each fan blade is provided with a free end and a fixed end; a front edge and a rear edge are formed between the free end and the fixed end; the free end is provided with a first upper chord and a first lower chord which are connected end to end; and the fixed end is provided with a second upper chord and a second lower chord. The chord lengths of the first upper chord and the first lower chord are between 34 and 38mm and between 32 and 36mm respectively; the curvatures of the first upper chord and the first lower chord are between 0.021 and 0.043 and between 0.015 and 0.040 respectively; the chord lengths of the second upper chord and the second lower chord are between 17 and 19mm; and the curvatures of the second upper chord and the second lower chord are between 0.022 and 0.051 and between 0.031 and 0.035 respectively. Airflow generated by the rotation of the fan blades completely moves towards an electronic device so as to make electronic equipment have good radiation performance.
Description
Technical field
The present invention relates to a kind of fan, especially relate to a kind of radiation fan.
Background technique
Along with development of electronic technology, various electronic equipments continue to bring out, and the higher electronic device of heating values such as power supply and microprocessor is widely used in the electronic equipment.In addition, along with the miniaturization of electronic equipment, the high-density installation of electric circuit comes into one's own, thereby the heat generation density of electronic equipment also increases, thereby the heat dissipation problem of electronic equipment has become the important problem of considering of electronic equipment research and development.
Existing radiation fan generally includes wheel hub and radially distributes in wheel hub several flabellums on every side; When said wheel hub rotates; Drive said flabellum and rotate, said flabellum is suppressed the air between the said flabellum, and pushes out air-flow; This air-flow can blow out the heat energy that electrical assembly produced, and reaches the effect of radiating and cooling.Yet existing blade structure is unreasonable, causes windage loss more, thereby makes electronic equipment dissipating heat bad.
Summary of the invention
The defective that The present invention be directed to the existence of above-mentioned background technology provides a kind of radiation fan, and this radiation fan can make electronic equipment dissipating heat good.
For realizing above-mentioned purpose; The invention discloses a kind of radiation fan; It comprises wheel hub and radially distributes in wheel hub several flabellums on every side that said flabellum is provided with free end and fixed end, is provided with front edge and rear edge between said free end and the fixed end; Said free end is provided with end to end first and winds up and first lower edge; Said fixed end is provided with second and winds up and second lower edge, and said first winds up and the chord length of first lower edge is 34mm ~ 36mm, and said first winds up and the curvature of first lower edge is respectively 0.021 ~ 0.043 and 0.015 ~ 0.040; Said second winds up and the chord length of second lower edge is 17mm ~ 19mm, and said second winds up and the curvature of second lower edge is respectively 0.022 ~ 0.051 and 0.031 ~ 0.035.
Further, said second wind up and the curvature of second lower edge is respectively 0.03 and 0.035.
Further, said front edge and the axial distance of said rear edge on this fan are 13mm ~ 15mm.
Further, the end of said wheel hub stretches out and is formed with some wind-guiding leaves that radially distribute, and said wind-guiding leaf extends along the space direction between the said flabellum.
Further, the surface of the end face of said wheel hub between said wind-guiding leaf is connected with the laterally inclined of said wheel hub.
Further, the surface that the end face center of said wheel hub parallels for the cross section with said wheel hub, the surface away from said wheel hub of this surface and said wind-guiding leaf is in same plane.
In sum; Radiation fan of the present invention through with the free end of said flabellum and fixed end wind up and the chord length and the curvature of lower edge are arranged in the reasonable range; When the air between the said flabellum is suppressed in the flabellum rotation; Air-flow fully moves towards the direction of electronic device, thereby makes electronic equipment dissipating heat good.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Fig. 2 is the structural representation at another visual angle of the present invention shown in Figure 1.
Embodiment
For further understanding characteristic of the present invention, technological means and the specific purposes that reached, function, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
See also Fig. 1 and Fig. 2; Radiation fan of the present invention comprises wheel hub 1 and radially distributes in wheel hub 1 several flabellums 2 on every side; Said flabellum 2 is provided with free end 21 and fixed end 22, is provided with front edge 23 and rear edge 24 between said free end 21 and the fixed end 22.Said free end 21 is provided with end to end first 211 and first lower edge 212 that winds up, and said fixed end 22 is provided with second 221 and second lower edge 222 that winds up.
Said first wind up 211 and first lower edge 212 chord length be 34mm ~ 36mm; Said first wind up 211 the curvature is 0.03; The curvature of said first lower edge 212 is 0.015 ~ 0.040; Said second wind up 221 and second lower edge 222 chord length be 17mm ~ 19mm, said second wind up 221 and second lower edge 222 curvature be respectively 0.03 and 0.035.Said front edge 23 is 14mm with the axial distance of said rear edge 24 on this fan.
The end of said wheel hub 1 stretches out and is formed with some wind-guiding leaves 3 that radially distribute; Said wind-guiding leaf 3 extends along the space direction between the said flabellum 2; Thereby when said fan rotates, can more air-flows be sent in the space between the said flabellum 2, thereby can improve heat dispersion.The surface that the end face center of said wheel hub 1 parallels for the cross section with said wheel hub 1, the surface away from said wheel hub 1 of this surface and said wind-guiding leaf 3 is in same plane.The surface of the end face of said wheel hub 1 between said wind-guiding leaf 3 is connected with the laterally inclined of said wheel hub 1, and in the present embodiment, the end face of said wheel hub 1 roughly is spherical shape, thereby is more convenient for more air-flows are sent in the space between the said flabellum 2.
In sum; Radiation fan of the present invention through with free end of said flabellum 2 21 and fixed end 22 wind up and the chord length and the curvature of lower edge are arranged in the reasonable range; When the air between the said flabellum 2 is suppressed in flabellum 2 rotations; Air-flow fully moves towards the direction of electronic device, thereby makes electronic equipment dissipating heat good.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with accompanying claims.
Claims (6)
1. radiation fan; Comprise wheel hub (1) and radially distribute in wheel hub (1) several flabellums (2) on every side; Said flabellum (2) is provided with free end (21) and fixed end (22), is provided with front edge (23) and rear edge (24) between said free end (21) and the fixed end (22); Said free end (21) is provided with end to end first and winds up (211) and first lower edge (212); Said fixed end (22) is provided with second and winds up (221) and second lower edge (222); It is characterized in that: said first winds up (211) and the chord length of first lower edge (212) is 34mm ~ 36mm; Said first winds up (211) and the curvature of first lower edge (212) is respectively 0.021 ~ 0.043 and 0.015 ~ 0.040; Said second winds up (221) and the chord length of second lower edge (222) is 17mm ~ 19mm, and said second winds up (221) and the curvature of second lower edge (222) is respectively 0.022 ~ 0.051 and 0.031 ~ 0.035.
2. radiation fan according to claim 1 is characterized in that: said second winds up (221) and the curvature of second lower edge (222) is respectively 0.03 and 0.035.
3. radiation fan according to claim 1 and 2 is characterized in that: said front edge (23) is 13mm ~ 15mm with the axial distance of said rear edge (24) on this fan.
4. radiation fan according to claim 1 and 2 is characterized in that: the end of said wheel hub (1) stretches out and is formed with some wind-guiding leaves (3) that radially distribute, and said wind-guiding leaf (3) extends along the space direction between the said flabellum (2).
5. radiation fan according to claim 4 is characterized in that: the end face of said wheel hub (1) is positioned at laterally inclined connection of surface and said wheel hub (1) between the said wind-guiding leaf (3).
6. radiation fan according to claim 5; It is characterized in that: the surface that the end face center of said wheel hub (1) parallels for the cross section with said wheel hub (1), the surface away from said wheel hub (1) of this surface and said wind-guiding leaf (3) is in same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010566379A CN101988522B (en) | 2010-12-01 | 2010-12-01 | Cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010566379A CN101988522B (en) | 2010-12-01 | 2010-12-01 | Cooling fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988522A CN101988522A (en) | 2011-03-23 |
| CN101988522B true CN101988522B (en) | 2012-08-29 |
Family
ID=43745235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010566379A Active CN101988522B (en) | 2010-12-01 | 2010-12-01 | Cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988522B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036537A (en) * | 1988-02-05 | 1989-10-25 | 国家宇航学术及研究局 | The blade profile of propeller hub formula propeller blade |
| US6129528A (en) * | 1998-07-20 | 2000-10-10 | Nmb Usa Inc. | Axial flow fan having a compact circuit board and impeller blade arrangement |
| CN1386984A (en) * | 2001-05-17 | 2002-12-25 | Lg电子株式会社 | Fan assembly for refrigerator |
| CN1982653A (en) * | 2005-12-16 | 2007-06-20 | 联合工艺公司 | Airfoil embodying mixed loading conventions |
| CN101427030A (en) * | 2006-03-23 | 2009-05-06 | 法雷奥热系统公司 | Fan propeller, in particular for motor vehicles |
| CN101666328A (en) * | 2008-09-05 | 2010-03-10 | 富准精密工业(深圳)有限公司 | Radiating device and fan impeller thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7497664B2 (en) * | 2005-08-16 | 2009-03-03 | General Electric Company | Methods and apparatus for reducing vibrations induced to airfoils |
-
2010
- 2010-12-01 CN CN201010566379A patent/CN101988522B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036537A (en) * | 1988-02-05 | 1989-10-25 | 国家宇航学术及研究局 | The blade profile of propeller hub formula propeller blade |
| US6129528A (en) * | 1998-07-20 | 2000-10-10 | Nmb Usa Inc. | Axial flow fan having a compact circuit board and impeller blade arrangement |
| CN1386984A (en) * | 2001-05-17 | 2002-12-25 | Lg电子株式会社 | Fan assembly for refrigerator |
| CN1982653A (en) * | 2005-12-16 | 2007-06-20 | 联合工艺公司 | Airfoil embodying mixed loading conventions |
| CN101427030A (en) * | 2006-03-23 | 2009-05-06 | 法雷奥热系统公司 | Fan propeller, in particular for motor vehicles |
| CN101666328A (en) * | 2008-09-05 | 2010-03-10 | 富准精密工业(深圳)有限公司 | Radiating device and fan impeller thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101988522A (en) | 2011-03-23 |
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