CN104454644A - High-efficiency axial flow fan - Google Patents
High-efficiency axial flow fan Download PDFInfo
- Publication number
- CN104454644A CN104454644A CN201410697789.0A CN201410697789A CN104454644A CN 104454644 A CN104454644 A CN 104454644A CN 201410697789 A CN201410697789 A CN 201410697789A CN 104454644 A CN104454644 A CN 104454644A
- Authority
- CN
- China
- Prior art keywords
- fan
- fan blade
- dashpot
- framework
- axis 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A high-efficiency axial flow fan comprises a frame. A fan body is arranged at the axis of the frame, the fan body is fixedly connected with a plurality of fan blades, and an annular buffer groove which surrounds the fan blades is formed in the position, located at the axial center of the fan body, of the inner surface of the frame. The high-efficiency axial flow fan is higher in rotation speed, larger in air volume and higher in efficiency under the same power.
Description
Technical field
The present invention relates to a kind of fan, particularly relate to the axial fan that a kind of efficiency is high.
Background technique
To be in the cooling fan that to carry in electrical article, OA, IT equipment for cooling heat-generating electronic part.In recent years, commercially, these family's electrical articles, the miniaturization of OA, IT equipment, high performance advance.
Increase for the heating value from electronic unit, as fan, usually adopt small-sized and be easy to obtain the small axial flow fan of air quantity.But for ensureing enough air quantity, axial fan needs to consume not little electric energy, produces considerable influence to the power consumption of electronic product.
Summary of the invention
The present invention, for solving prior art problem, provides the axial fan that a kind of efficiency is high.
Technological scheme of the present invention is: a kind of efficient axis flow fan, comprise framework, the axle center place of described framework is provided with blower fan, and described blower fan is fixedly connected with some fan blades, and the axial centre position that described frame inner surface is positioned at described blower fan has the dashpot of the annular arranged around described fan blade.
As preferably, described dashpot along described fan shaft to antetheca and rear wall all perpendicular to the central shaft of described blower fan.
As preferably, the guide cone of the V-arrangement of described fan blade is pointed at the tip that the outer side wall of described dashpot is provided with an annular.
As preferably, the distance between the outermost point of described fan blade and described dashpot outer side wall is not more than 1/5 of described fan blade length.
As preferably, described fan blade favours described fan shaft to setting; The width of described dashpot to be not more than when described fan blade rotates projection width on said frame.
As preferably, described fan blade is fixedly installed on the outer surface of described blower fan; Described blower fan outer surface has the parallel wind groove of some and described fan blade between adjacent described fan blade.
As preferably, the spacing between adjacent described wind groove is equal.
As preferably, described fan blade air side is provided with flange near the central position of described blower fan.
As preferably, the length of described flange is not more than the half of described fan blade length; The thickness of described flange is not more than 5 times of described fan blade thickness.
As preferably, all flangings in described flange surface are circular arc chamfering.
Operationally, can form complicated flow-disturbing between fan blade and framework, these flow-disturbings can disturb the rotation of fan blade to traditional axial fan, reduce the rotating speed of fan blade.What the flange that the present invention is arranged on fan blade can strengthen fan blade pushes away wind effect, under same rotational speed, promote air quantity.Simultaneously at frame inner surface, along the turning circumference of fan blade, open a dashpot, when fan blade high speed rotating, a stable high velocity air can be formed by the air of fan blade rotation disturbance in dashpot, this air-flow can reduce the air pressure in space between fan blade and framework, when making the operation of conventional axial-flow fan, the air disturbance at this position is inhaled into air-flow, simultaneously this high velocity air due to direction identical with fan blade sense of rotation, therefore between fan blade and framework, form lubricating layer, effectively reduce fan blade resistance.
In sum, the present invention has the following advantages:
1, under identical power, rotating speed is high, and air quantity is large, and efficiency is high;
2, structure is simple, and improving cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is another viewing angle constructions schematic diagram of the present invention;
Fig. 3 is A-A anatomical structure schematic diagram in Fig. 2.
In figure, 1, framework, 2, fan blade, 3, stator, 4, rotor, 5, wind groove, 6, chamfering, 7, dashpot, 8, guide cone, 9, flange.
Embodiment
With embodiment, the invention will be further described below.
Embodiment one:
A kind of efficient axis flow fan, comprise framework 1, the axle center place of framework 1 is provided with blower fan, blower fan comprises the stator 3 be fixedly connected with framework 1, be arranged at the rotor 4 on stator 3, and be fixedly installed on rotor 4 fan blade 2 circumferentially, stator 3 is near the wind inlet of framework 1, rotor 4 is near the exhaust outlet of framework 1, and the wind inlet side that stator 3 is positioned at framework 1 is provided with chamfering 6.Fan blade 2 is fixedly installed on the outer surface of rotor 4; Rotor 4 outer surface has some wind grooves 5 parallel with fan blade 2 between adjacent fan blade 2, and the chamfering 6 of stator 3 extends to the ingress of wind groove 5 to rotor 4.Spacing between adjacent wind groove 5 is equal.At fan blade 2 and rotor 4, the external diameter between the termination of framework 1 exhaust outlet successively reduces along axially extending to framework 1 exhaust outlet direction of rotor 4 rotor 4, and the minimum outer diameter of rotor 4 is not less than 1/2 of maximum outside diameter.
The axial centre position that framework 1 internal surface is positioned at blower fan has the dashpot 7 of the annular arranged around fan blade 2, and the distance between the outermost point of fan blade 2 and dashpot 7 outer side wall is not more than 1/5 of fan blade 2 length.Dashpot 7 along fan shaft to antetheca and rear wall all perpendicular to the central shaft of blower fan, fan blade 2 favours fan shaft to setting; The width of dashpot 7 is not more than projection width when fan blade 2 rotates on framework 1.The outer side wall of dashpot 7 is provided with the guide cone 8 of the V-arrangement of the tip sensing fan blade 2 of an annular.
Fan blade 2 air side is provided with flange 9 near the central position of blower fan.The length of flange 9 is not more than the half of fan blade 2 length; The thickness of flange 9 is not more than 5 times of fan blade 2 thickness.The surperficial all flangings of flange 9 are circular arc chamfering.
The present invention operationally, in the process of exhausting, most of air is pushed to exhaust outlet from framework 1 hollow part through fan blade 2, has fraction air to be blocked in fan front by stator 3 and forms flow-disturbing, have fraction air by after chamfering 6 along rotor 4 outer surface, by wind groove 5 water conservancy diversion.Fan blade 2 is when high speed rotating, a stable high velocity air can be formed in dashpot 7 by the air of fan blade 2 rotation disturbance, this air-flow can reduce the air pressure in space between fan blade 2 and framework 1, when making the operation of conventional axial-flow fan, the air disturbance at this position is inhaled into air-flow, this high velocity air is identical with fan blade 2 sense of rotation due to direction simultaneously, therefore between fan blade 2 and framework 1, forms lubricating layer.Guide cone 8, for splitting high velocity air, makes high velocity air form a centre fast, the circulation that two ends are slow, strengthens further removing flow-disturbing effect, promotes lubrication effect.What flange 9 can strengthen fan blade 2 pushes away wind effect, under same rotational speed, promote air quantity.
Claims (7)
1. an efficient axis flow fan; comprise framework (1); the axle center place of described framework (1) is provided with blower fan, and described blower fan is fixedly connected with some fan blades (2), it is characterized in that: described fan blade (2) air side is provided with flange (9) near the central position of described blower fan; The axial centre position that described framework (1) internal surface is positioned at described blower fan has the dashpot (7) of the annular arranged around described fan blade (2).
2. efficient axis flow fan according to claim 1, is characterized in that: the length of described flange (9) is not more than the half of described fan blade (2) length; The thickness of described flange (9) is not more than 5 times of described fan blade (2) thickness.
3. efficient axis flow fan according to claim 2, is characterized in that: the surperficial all flangings of described flange (9) are circular arc chamfering.
4. efficient axis flow fan according to claim 1, is characterized in that: described dashpot (7) along described fan shaft to antetheca and rear wall all perpendicular to the central shaft of described blower fan.
5. efficient axis flow fan according to claim 4, is characterized in that: the guide cone (8) of the V-arrangement of described fan blade (2) is pointed at the tip that the outer side wall of described dashpot (7) is provided with an annular.
6. efficient axis flow fan according to claim 5, is characterized in that: the distance between the outermost point of described fan blade (2) and described dashpot (7) outer side wall is not more than 1/5 of described fan blade (2) length.
7. efficient axis flow fan according to claim 6, is characterized in that: described fan blade (2) favours described fan shaft to setting; The width of described dashpot (7) is not more than projection width when described fan blade (2) rotates on described framework (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697789.0A CN104454644B (en) | 2014-11-28 | 2014-11-28 | A kind of efficient axis flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697789.0A CN104454644B (en) | 2014-11-28 | 2014-11-28 | A kind of efficient axis flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104454644A true CN104454644A (en) | 2015-03-25 |
| CN104454644B CN104454644B (en) | 2017-10-27 |
Family
ID=52901225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410697789.0A Expired - Fee Related CN104454644B (en) | 2014-11-28 | 2014-11-28 | A kind of efficient axis flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104454644B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100808869B1 (en) * | 2003-10-24 | 2008-03-03 | 삼성전자주식회사 | A ventilation fan and microwaveoven applying the same |
| CN201401365Y (en) * | 2009-03-23 | 2010-02-10 | 台达电子工业股份有限公司 | Fan and fan impeller thereof |
| CN202007796U (en) * | 2010-12-13 | 2011-10-12 | 元山科技工业股份有限公司 | Fan frame |
| CN203098386U (en) * | 2012-11-23 | 2013-07-31 | 杭州顿力电器有限公司 | Axial fan blade |
| CN203809354U (en) * | 2014-04-23 | 2014-09-03 | 镇江市博林光电科技有限公司 | Axial flow fan with large suction force |
| CN204267367U (en) * | 2014-11-28 | 2015-04-15 | 德清振达电气有限公司 | A kind of efficient axis flow fan |
-
2014
- 2014-11-28 CN CN201410697789.0A patent/CN104454644B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100808869B1 (en) * | 2003-10-24 | 2008-03-03 | 삼성전자주식회사 | A ventilation fan and microwaveoven applying the same |
| CN201401365Y (en) * | 2009-03-23 | 2010-02-10 | 台达电子工业股份有限公司 | Fan and fan impeller thereof |
| CN202007796U (en) * | 2010-12-13 | 2011-10-12 | 元山科技工业股份有限公司 | Fan frame |
| CN203098386U (en) * | 2012-11-23 | 2013-07-31 | 杭州顿力电器有限公司 | Axial fan blade |
| CN203809354U (en) * | 2014-04-23 | 2014-09-03 | 镇江市博林光电科技有限公司 | Axial flow fan with large suction force |
| CN204267367U (en) * | 2014-11-28 | 2015-04-15 | 德清振达电气有限公司 | A kind of efficient axis flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104454644B (en) | 2017-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20181128 |