CN100582492C - Fan leaf structure and centrifugal fan using the same - Google Patents
Fan leaf structure and centrifugal fan using the same Download PDFInfo
- Publication number
- CN100582492C CN100582492C CN200710075192A CN200710075192A CN100582492C CN 100582492 C CN100582492 C CN 100582492C CN 200710075192 A CN200710075192 A CN 200710075192A CN 200710075192 A CN200710075192 A CN 200710075192A CN 100582492 C CN100582492 C CN 100582492C
- Authority
- CN
- China
- Prior art keywords
- blade
- wheel hub
- diversion division
- centrifugal cutter
- ring flat
- 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
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a centrifugal fan comprising a fan blade structure which is provided with a hub and a plurality of blades which are radially distributed on the peripheral direction of the hub; each blade is provided with a windward surface, wherein, a width of each blade descends along an outward direction of a radial direction of the hub; the windward surface of the blade is of a concave curved surface shape which gradually contracts inwards along the upper side edge and the lower side edge of the blade to the central part of the blade. In the fan blade structure of the centrifugal fan, further, an annular plate is annularly arranged on the outer peripheral surface of the hub; each blade is provided with a connecting end connected with the outer peripheral surface of the annular plate and a free end relative to the connecting end; and a guide part connected with the blade is formed on the upper surface of the annular plate corresponding to each blade. Airflow produced by the fan blades of the centrifugal fan has a high flow speed and a large flow rate.
Description
The present invention relates to a kind of centrifugal cutter, particularly about a kind of blade structure of centrifugal cutter and adopt the centrifugal cutter of this blade structure.
Background technique
Along with developing rapidly of computer industry, CPU pursues high-speedization, and the heat dissipation problem that multifunction and miniaturization are derived is more and more serious, and this is more outstanding in the narrow and small electronic equipment in inner spaces such as notebook computer.If the heats that electronic component produced such as CPU in the notebook computer can't be distributed timely and effectively, will greatly influence the service behaviour of electronic component, also can reduce the working life of electronic component simultaneously, therefore must dispel the heat to electronic component.
In notebook computer, the normal heat radiation module of being made up of thermal conductor, heat pipe, radiating fin and centrifugal cutter that adopts is to electronic element radiating at present.Thermal conductor is attached on the electronic component, and thermal conductor is connected by heat pipe with radiating fin, and the air-flow that centrifugal cutter produces brushes radiating fin and distributes with heat the most at last with radiating fin generation heat exchange.Therefore, centrifugal cutter plays a part very important in the heat radiation module.The flow velocity of centrifugal cutter is fast more, air quantity is big more, and then the heat with radiating fin exchange is also just more, thereby effectively the heat of electronic component is distributed.Yet, the blade of present employed centrifugal cutter is generally plate blade, its water conservancy diversion poor effect and make centrifugal cutter be difficult to produce higher flow velocity and bigger air quantity will be difficult to tackle in less space effectively the demand that the electronic component to golf calorific value dispels the heat.
Summary of the invention
In view of this, be necessary to provide a kind of blade structure of the centrifugal cutter that can produce high flow velocities and big air quantity and adopt the centrifugal cutter of this blade structure.
A kind of centrifugal cutter, comprise a blade structure, this blade structure has a wheel hub and radially distributes in the circumferential some blades of wheel hub, each blade has a windward side, the width of wherein said each blade successively decreases along the radially outer direction of wheel hub, the concave curve surface shape of the windward side of described blade for contracting in gradually to the middle part of blade along the upper and lower lateral margin of blade.
The blade structure of this centrifugal cutter further is equipped with a ring flat-plate on the outer circumferential face of wheel hub, each blade has a connecting end and a free end relative with this connecting end that is connected with the outer circumferential face of this ring flat-plate, and corresponding each blade is formed with a diversion division that links to each other with blade on the upper surface of this ring flat-plate.
Compared with prior art, in the blade structure of above-mentioned centrifugal cutter, the width of blade successively decreases along the radially outer direction of wheel hub, the concave curve surface shape of the windward side of blade for contracting in gradually to the middle part of blade along the upper and lower lateral margin of blade, the concave curved surface that contracts in being somebody's turn to do has leading role to air-flow, the blade of this gradually-reducing shape can be to compressing along the concave curved surface airflow flowing, thus the higher flow velocity of air-flow tool that the free end from blade is flowed out.In addition, corresponding each blade of upper surface of the ring flat-plate of establishing at the outer circumferential face ring of the wheel hub of flabellum is formed with the diversion division that links to each other with blade, can be by this diversion division with air-flow guide vane apace, thus flowing of accelerating gas makes the flow increase of centrifugal cutter.
Description of drawings
With reference to the accompanying drawings, in conjunction with the embodiments the present invention is further described.
Fig. 1 is the blade structure stereogram of a preferred embodiment wherein of centrifugal cutter of the present invention.
Fig. 2 is the side view of the blade structure of centrifugal cutter shown in Figure 1.
Fig. 3 is the plan view of the blade structure of centrifugal cutter shown in Figure 1.
Fig. 4 is along the sectional drawing of IV-IV line among Fig. 3.
Embodiment
The blade structure 10 that Figure 1 shows that centrifugal cutter of the present invention is the stereogram of a preferred embodiment wherein, and this flabellum 10 comprises a wheel hub 11, a ring flat-plate 12, some blades 13 and some diversion divisions 14.
This wheel hub 11 has an end face 111 and an outer circumferential face 112.This ring flat-plate 12 is located on the outer circumferential face 112 of this wheel hub 11, and is positioned at the axial middle part of this outer circumferential face 112.These blades 13 are radial and are uniformly distributed in circumferentially and with the outer circumferential face 121 of ring flat-plate 12 being connected of wheel hub 11.Each blade 13 has the connecting end 131 that is connected with the outer circumferential face 121 of ring flat-plate 12 and a free end 132 relative with this connecting end 131, the width of blade 13 successively decreases to the free end 132 of blade 13 from the connecting end 131 of blade 13, and promptly the width of blade 13 at connecting end 131 places is greater than its width at free end 132 places.Please in the lump with reference to Fig. 2 and Fig. 3, blade 13 the top 133 at connecting end 131 places and bottom 134 wheel hub 11 axially on protrude from the upper and lower surperficial 122,123 of ring flat-plate 12 respectively, blade 13 just can have a bigger width at connecting end 131 places like this.Each blade 13 from the top 133 at its connecting end 131 places along the extending radially inwardly of wheel hub 11, thereby form a diversion division 14 at the upper surface 122 of ring flat-plate 12, and the inner of this diversion division 14 is connected with the outer circumferential face 112 of wheel hub 11.
As shown in Figure 4, each blade 13 comprises a windward side 135 and a lee face 136 relative with this windward side 135, in the process of flabellum 10 runnings, the windward side 135 of blade 13 is positioned at the place ahead of this lee face 136 on the sense of rotation of flabellum 10, wherein the concave curved surface of the windward side 135 of blade 13 for contracting in gradually to the middle part of blade 13 along the upper and lower lateral margin of blade 13.Each blade 13 also comprise first arc surface 137 between the last lateral margin of the last lateral margin that is connected in windward side 135 and lee face 136 and be connected in the lower lip of windward side 135 and the lower lip of lee face 136 between second arc surface 138.
Please continue to consult Fig. 2, the diversion division 14 that is connected with each blade 13 also correspondingly has a windward side 141 and a lee face 142, the inclined-plane of the windward side 141 of diversion division 14 for contracting in gradually along the lower lip of the last lateral margin guide stream portion 14 of diversion division 14 wherein, wherein the windward side 141 of this diversion division 14 also can be a cambered surface.Each diversion division 14 also has the arc surface 143 between the last lateral margin of the last lateral margin that is connected in windward side 141 and lee face 142.
This blade structure 10 can be located in the fan frame of a centrifugal cutter or one be equipped with on the radiating seat of radiating fin and use.During work, these flabellum 10 structures are rotated along the direction shown in arrow R among Fig. 1, and the windward side 141 of diversion division 14 and the windward side 135 of blade 13 lay respectively at the place ahead of lee face 142,136 separately on the sense of rotation of blade structure 10.The windward side 141 of this diversion division 14 is the inclined-plane that contracts in, the guide vane 13 promptly from the windward side 141 of ring flat-plate 12 top inhaled airs by this diversion division 14, thus can quicken flowing of air-flow, the flow of centrifugal cutter is increased.The concave curved surface of the windward side 135 of blade 13 for contracting in gradually to the middle part of blade 13 along the upper and lower lateral margin of blade 13 will be along the windward side 135 of blade 13 flowing radially outward along wheel hub 11 by the air-flow of diversion division 14 guide vanes 13.The width of blade 13 successively decreases to the free end 132 of blade 13 from the connecting end 131 of blade 13 again, the air-flow that flows radially outward along blade 13 windward sides 135 along wheel hub 11 is compressed gradually, thereby makes the higher flow velocity of air-flow tool from free end 132 outflows of blade 13.
Use the blade structure of the centrifugal cutter of plate shaped blade to compare with tradition, in the blade structure 10 of above-mentioned centrifugal cutter, the concave curved surface of the windward side 135 of blade 13 for contracting in gradually to the middle part of blade 13 along the upper and lower lateral margin of blade 13, the width of blade 13 successively decreases to the free end 132 of blade 13 from the connecting end 131 of blade 13, the concave curved surface that contracts in being somebody's turn to do has leading role to air-flow, the blade 13 of this gradually-reducing shape can make along the concave curved surface airflow flowing and be compressed gradually, thereby makes the higher flow velocity of air-flow tool from free end 132 outflows of blade 13.In addition, outer circumferential face 112 at the wheel hub 11 of flabellum 10 is equipped with ring flat-plate 12, and is formed with the diversion division 14 that links to each other with blade 13 at the upper surface 122 of ring flat-plate 12, can be with air-flow guide vane 13 apace by this diversion division 14, thereby flowing of accelerating gas increases the flow of centrifugal cutter.By the setting of this ring flat-plate 12 and diversion division 14, the join strength of blade 13 is increased, fractureed to guarantee the rotating speed that blade 13 can Yin Taigao.
In the above-described embodiments, diversion division 14 only is arranged on the upper surface 122 of ring flat-plate 12, is appreciated that ground, and the blade structure 10 of above-mentioned centrifugal cutter also can be located in the fan frame of centrifugal cutter of upper and lower pair of intake grill of tool.In such cases, also can form another diversion division by corresponding each blade 13 on the lower surface 123 of ring flat-plate 12, promptly ring flat-plate 12 upper and lower surperficial 122,123 on form laterally zygomorphic two diversion divisions respectively, this another diversion division can be with the air that enters from ring flat-plate 12 belows guide vane 13 promptly, thus the flowing of accelerating gas.
Claims (10)
1. the blade structure of a centrifugal cutter, have a wheel hub and radially distribute in the circumferential some blades of wheel hub, each blade has a windward side, it is characterized in that: the width of described each blade successively decreases along the radially outer direction of wheel hub, the concave curve surface shape of the windward side of described blade for contracting in gradually to the middle part of blade along the upper and lower lateral margin of blade.
2. the blade structure of centrifugal cutter as claimed in claim 1, it is characterized in that: this wheel hub has an end face and an outer circumferential face, be equipped with a ring flat-plate on the outer circumferential face of this wheel hub, each blade has a connecting end and a free end relative with this connecting end that is connected with the outer circumferential face of this ring flat-plate, and corresponding each blade is formed with a diversion division that links to each other with blade on the upper surface of this ring flat-plate.
3. the blade structure of centrifugal cutter as claimed in claim 2, it is characterized in that: this ring flat-plate is positioned at the axial middle part of outer circumferential face of wheel hub.
4. the blade structure of centrifugal cutter as claimed in claim 2 is characterized in that: described blade is at the width at the connecting end place thickness greater than ring flat-plate.
5. the blade structure of centrifugal cutter as claimed in claim 2, it is characterized in that: described diversion division has a windward side, the inclined-plane of the windward side of this diversion division for contracting in gradually along the lower lip of the last lateral margin guide stream portion of diversion division.
6. the blade structure of centrifugal cutter as claimed in claim 2, it is characterized in that: this diversion division also has a lee face, is connected with an arc surface between the last lateral margin of this lee face and the last lateral margin of corresponding windward side.
7. the blade structure of centrifugal cutter as claimed in claim 2, it is characterized in that: each blade at the connecting end place along the upper and lower surface that axially protrudes from ring flat-plate respectively of wheel hub, described diversion division is to protrude from the extend radially inwardly formation of the part of ring flat-plate upper surface along wheel hub from blade, and an end of diversion division sensing wheel hub is connected with the outer circumferential face of wheel hub.
8. the blade structure of centrifugal cutter as claimed in claim 7, it is characterized in that: corresponding each blade forms another diversion division that is connected with blade on the lower surface of this ring flat-plate, and this another diversion division forms symmetric relation up and down with the diversion division that is formed at the ring flat-plate upper surface.
9. the blade structure of centrifugal cutter as claimed in claim 1, it is characterized in that: each blade has a lee face, is connected with an arc surface respectively between the last lateral margin of this lee face and the last lateral margin of corresponding windward side and between the lower lip of the lower lip of this lee face and corresponding windward side.
10. a centrifugal cutter comprises a blade structure, it is characterized in that: this blade structure is the blade structure described in any one of the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710075192A CN100582492C (en) | 2007-06-22 | 2007-06-22 | Fan leaf structure and centrifugal fan using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710075192A CN100582492C (en) | 2007-06-22 | 2007-06-22 | Fan leaf structure and centrifugal fan using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101328904A CN101328904A (en) | 2008-12-24 |
| CN100582492C true CN100582492C (en) | 2010-01-20 |
Family
ID=40204867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710075192A Expired - Fee Related CN100582492C (en) | 2007-06-22 | 2007-06-22 | Fan leaf structure and centrifugal fan using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100582492C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11859633B2 (en) | 2021-11-26 | 2024-01-02 | Asustek Computer Inc. | Centrifugal fan |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI516683B (en) | 2013-02-05 | 2016-01-11 | 建準電機工業股份有限公司 | Centrifugal fan |
| CN105604967B (en) * | 2016-01-19 | 2019-02-12 | 佛山市朗然通风设备有限公司 | A kind of heat transmission blower |
| CN114797185A (en) * | 2022-05-18 | 2022-07-29 | 三一技术装备有限公司 | Fluid separator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2391037Y (en) * | 1999-06-07 | 2000-08-09 | 林世仁 | Blade structure for axial-flow fan |
| CN2658441Y (en) * | 2003-07-17 | 2004-11-24 | 台达电子工业股份有限公司 | Blade |
| US6827555B2 (en) * | 2001-12-26 | 2004-12-07 | Sheng-Shyan Yang | Cooling fan with curved V-shaped impellers |
| US20050249604A1 (en) * | 2004-05-07 | 2005-11-10 | Delta Electronics, Inc. | Fan |
| EP1726832A2 (en) * | 2005-05-17 | 2006-11-29 | LG Electronics Inc. | Turbo fan and blade thereof |
-
2007
- 2007-06-22 CN CN200710075192A patent/CN100582492C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2391037Y (en) * | 1999-06-07 | 2000-08-09 | 林世仁 | Blade structure for axial-flow fan |
| US6827555B2 (en) * | 2001-12-26 | 2004-12-07 | Sheng-Shyan Yang | Cooling fan with curved V-shaped impellers |
| CN2658441Y (en) * | 2003-07-17 | 2004-11-24 | 台达电子工业股份有限公司 | Blade |
| US20050249604A1 (en) * | 2004-05-07 | 2005-11-10 | Delta Electronics, Inc. | Fan |
| EP1726832A2 (en) * | 2005-05-17 | 2006-11-29 | LG Electronics Inc. | Turbo fan and blade thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11859633B2 (en) | 2021-11-26 | 2024-01-02 | Asustek Computer Inc. | Centrifugal fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101328904A (en) | 2008-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101498317B (en) | Heat radiating fun and impeller thereof | |
| CN101535657B (en) | Axial fan assembly and axial fan | |
| CN101555887B (en) | Fan blade structure of centrifugal fan | |
| CN101338766B (en) | Centrifugal fan and heat sink module adopting same | |
| CN102996516B (en) | Electronic equipment and radiating module thereof and centrifugal cutter thereof | |
| KR101327340B1 (en) | Direct-connection low-speed small mixed-flow hydroturbine for hydrodynamic energy-saving cooling tower | |
| CN100582492C (en) | Fan leaf structure and centrifugal fan using the same | |
| CN101725564B (en) | Centrifugal fan and radiating device using same | |
| CN101463831A (en) | Cooling fan and its fan blades | |
| CN106762780B (en) | Fan support and fan device comprising same | |
| CN201436402U (en) | Propeller fan | |
| CN101338770B (en) | Centrifugal fan | |
| CN101363449A (en) | Blade structure | |
| CN102052333A (en) | Radiator fan | |
| CN101725573A (en) | Centrifugal fan | |
| CN101014752A (en) | Vane wheel of a turbine comprising a vane and at least one cooling channel | |
| CN101672299A (en) | Eccentric fan | |
| CN205225853U (en) | Structure is promoted to flabellum amount of wind on axial fan's primary fan leaf | |
| CN108457905A (en) | Volute tongue, cross flow fan, air conditioner | |
| CN101338767B (en) | Fan leaf structure and centrifugal fan adopting the fan leaf structure | |
| CN101463832B (en) | Cooling fan and its fan blades | |
| CN202679887U (en) | Wind-pressure enhanced radiating module | |
| CN214837343U (en) | Centrifugal impeller | |
| WO2021143952A1 (en) | Flow guide cover and server having same | |
| CN215595932U (en) | Axial flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20140622 |
|
| EXPY | Termination of patent right or utility model |