CN2508028Y - Blade of fan - Google Patents
Blade of fan Download PDFInfo
- Publication number
- CN2508028Y CN2508028Y CN 01264405 CN01264405U CN2508028Y CN 2508028 Y CN2508028 Y CN 2508028Y CN 01264405 CN01264405 CN 01264405 CN 01264405 U CN01264405 U CN 01264405U CN 2508028 Y CN2508028 Y CN 2508028Y
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- CN
- China
- Prior art keywords
- blade
- fan
- flabellum
- positive camber
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to fan blades of a fan, wherein a plurality of blades are arranged on the casing peripheral surface, and two sides of each blade are formed with an external curved surface and an inner arc surface. The fan blade angle of each blade is an included angle which is formed by an extension line formed by fan blade central point facing to the root rim of the blade external curved surface and an extension line formed by the root rim of the blade external curved surface facing to the end portion of the blade external curved surface. The fan blade angle is more than or equal to 30 degrees and less than or equal to 40 degrees. The blade is arranged on the front rim of the inner arc surface, which forms a tangent plane. As utilizing the design, fan blades achieve perfect air flow driving effect, the opening width between blades is increased, the air-out quantity is also increased, and the heat dissipating efficiency of a fan is enhanced. Furthermore, a groove which is provided with an upward break is formed on the contacting portion of the casing periphery close to the lower side of the blade, and a cutting groove with a plane is formed on the upper front end of the blade, thereby the practical efficiency of a further thinner shape can be achieved after a fan is combined.
Description
Technical field
The utility model is the flabellum about a kind of field fan that ventilates, and refers to a kind of radiating efficiency that improves especially, and allows the further flabellum of the fan of thin typeization of blowing-type fan.
Background technique
Present fan structure at the electronic equipment heat transmission, can generally be divided into two kinds in axial flow fan and blowing-type fan, axial flow fan is that the top air is sucked, and with the axial flow flabellum it is blown out downwards, and the blowing-type fan then is that the top air is sucked for the priming of air-flow, and its side direction is blown out by the blowing-type flabellum, and these two kinds of fan structures because of air-flow priming direction difference, and can be disposed according to system requirements.
In the said fans structure, the flabellum of axial flow fan, the blade that its housing side face is set, be be shaped to upper left towards bottom right rotation direction or upper right towards the lower-left rotation direction, the blade of the flabellum of itself and blowing-type fan, be to be vertically installed in housing chassis structure form to distinguish to some extent, as Taiwan patent announcement application case number No. 84203362 " microminiature centrifugal fan ", be the masterpiece of general common blowing-type fan, its fan blade promptly is molded over the housing chassis, and when activating rotation, ambient air can be sucked via the loam cake intake grill by the top, and wind be gone out by pedestal front end exhaust outlet, and this fan blade, for considering air draught and rotation problem, blade is positioned at loam cake intake grill downside, and can not be further thin typeization in addition, and, form the angle of specific curves between blade and blade, make air output be difficult to increase again.
And Taiwan patent announcement application case number No. 85210446 " the improvement structure of ultrathin centrifugal fan " and for example, then be that flabellum with axial flow fan is arranged in the pedestal of blowing-type fan, and when fan activates rotation, the flabellum of this axial flow fan, be that ambient air is sucked by the upper cover plate intake grill equally, and wind is blowed by pedestal front end exhaust outlet, and the blowing-type fan of this installing axial flow flabellum, the blade of its axial flow flabellum has specific rotation direction, and blade and impeller connect and establish the limit is to push up with impeller, the bottom surface becomes 45 degree angles approximately, and when width of blade is constant, if increase blade and top, the bottom surface angle, to make blower-casting height thickening, be unfavorable for the purpose of thin typeization on the contrary, and if for ultra-thinization further, and reduce blade and impeller top, the bottom surface angle, then will make the air-flow of introducing significantly drop on base bottom surface, and in pedestal, form flow-disturbing, and then air output is reduced.
This shows that the flabellum of above-mentioned existing fan still has many defectives, and the assistant officer treats further to be improved.
Because the defective that the flabellum of above-mentioned existing fan exists, the design people is actively studied innovation, through constantly studying, designing based on abundant practical experience and professional knowledge, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
The model utility content
Main purpose of the present utility model is, overcome the defective of the flabellum existence of existing fan, and provide a kind of flabellum of fan of new and improved structure, make it several pieces blades are set at the housing side face, the blade both sides are positive camber and intrados, the fan blade angles of blade, it is the line stretcher that forms towards blade positive camber root edge place by the flabellum central point, and blade positive camber root edge place is towards the angle of the formed line stretcher in blade positive camber tail end, and fan blade angles is smaller or equal to 40 degree, to make flabellum have preferable priming air-flow effect more than or equal to 30 degree.
Another purpose of the present utility model is, a kind of flabellum of fan is provided, and makes the blade of flabellum be positioned at formation tangent plane, intrados leading edge place, and structural design can increase interlobate A/F, and can increase air output by this, to improve the radiating efficiency of fan.
A purpose more of the present utility model is, a kind of flabellum of fan is provided, make it form the upwards groove of turnover near housing side face handing-over position at the blade downside, the blade upper front end forms the grooving on plane, and after the cover plate lid is established, can make cover plate intake grill inner edge be positioned at the grooving top, and the blade of flabellum can further be dissolved in the intake grill, make further thin typeization of blowing-type fan.
The purpose of this utility model is realized by following technological scheme.Flabellum according to a kind of fan that the utility model proposes, it is to be provided with several pieces blades at the housing side face, the blade both sides are positive camber and intrados, the fan blade angles of blade, it is the line stretcher that forms towards blade positive camber root edge place by the flabellum central point, and blade positive camber root edge place is towards the angle of the formed line stretcher in blade positive camber tail end, and fan blade angles for more than or equal to 30 degree smaller or equal to 40 degree.
The purpose of this utility model can also adopt following technical measures further to realize.
The flabellum of aforesaid fan, wherein said blade are positioned at intrados leading edge place and form the tangent plane.
The flabellum of aforesaid fan, wherein the blade downside forms the upwards groove of turnover near housing side face handing-over position.
The flabellum of aforesaid fan, wherein the blade upper front end forms the grooving on plane.
The utility model compared with prior art has tangible advantage and beneficial effect.By above technological scheme as can be known, the flabellum of the utility model fan, it is at the housing side face several pieces blades to be set, the blade both sides are positive camber and intrados, the fan blade angles of blade, it is the line stretcher that forms towards blade positive camber root edge place by the flabellum central point, and blade positive camber root edge place is towards the angle of the formed line stretcher in blade positive camber tail end, and fan blade angles is smaller or equal to 40 degree more than or equal to 30 degree, and, blade is positioned at intrados leading edge place and forms the tangent plane, structural design can make flabellum have preferable priming air-flow effect, and can increase interlobate A/F by this, and can increase air output, with the radiating efficiency of raising fan, and, the groove of upwards transferring be provided with at the blade downside near housing side face handing-over position formation, the blade upper front end forms the grooving be provided with the plane, makes can reach the further practical effect of thin typeization after the combination of fans.
In sum, the flabellum of the utility model fan, its fan blade angles with the special construction design can reach the purpose that increases air output, and can be by the setting of the grooving and the groove of blade, the thin type purpose is reached easily, it is provided with intake grill at the flabellum upper and lower in addition, can increase the ambient air intake, and radiating efficiency can effectively be promoted.No matter it structurally or bigger improvement is all arranged on the function, and have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thereby be suitable for practicality more, really is a new and innovative, progressive, practical new design.
Description of drawings
Fig. 1 is a three-dimensional exploded view of the present utility model.
Fig. 2 is a composite structure plan view of the present utility model.
Fig. 3 is a composite structure sectional view of the present utility model.
Fig. 4 is the partial top view one of flabellum of the present utility model.
Fig. 5 is the partial top view two of flabellum of the present utility model.
Fig. 6 is the three-dimensional exploded view that the utility model is applied to another kind of base form.
(10) base (11) base plate
(12) sidewall (13) containing groove
(131) exhaust outlet (14) intake grill
(20) stator pack (21) circuit board
(30) flabellum (31) housing
(32) axle (33) blade
(34) positive camber (35) groove
(36) grooving (37) intrados
(38) tangent plane (40) cover plate
(41) intake grill (50) base
(51) base plate (52) radiating fin
(53) intake grill (54) foot rest
(55) cover plate (56) intake grill
(θ) fan blade angles
(a) the flabellum central point is towards the formed line stretcher of blade positive camber root edge
(b) blade positive camber root edge is towards the terminal formed line stretcher of blade positive camber
(c) A/F (d) A/F
(P1) blade positive camber root edge place (P2) blade positive camber tail end
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its concrete structure of flabellum, feature and effect thereof according to the fan that the utility model proposes, describe in detail as after.
At first, see also shown in Figure 1, the flabellum of the utility model fan, it is to form at the base plate of base (10) (11) periphery to be provided with sidewall (12), and be provided with containing groove (13) in the formation of base plate (11) upside, containing groove (13) front end forms and is provided with exhaust outlet (131), stator pack (20) is set in the containing groove (13), stator pack (20) bottom is provided with circuit board (21), stator pack (20) can be assembled in the containing groove (13) of base (10), and the base plate (11) that is positioned at stator pack (20) periphery be provided with several arcs around intake grill (14), be provided with axle (32) in the housing (31) of flabellum (30), axle (32) can be hubbed at downwards in the stator pack (20), then is provided with cover plate (40) on the top of base (10) and is covered, and is provided with intake grill (41) in the cover plate (40).
Flabellum of the present utility model (30) structure, be to be provided with several pieces blades (33) at housing (31) side face, blade (33) is counterclockwise rotation direction shape, blade (33) both sides are positive camber (34) and intrados (37), blade (33) downside forms near housing (31) side face handing-over position and is provided with the upwards groove (35) of turnover, the front end of blade (33) upside forms the grooving (36) that is provided with the plane, and again, blade (33) is provided with tangent plane (38) being positioned at intrados (37) leading edge.
Please cooperate and consult Fig. 2 and shown in Figure 3, wherein, the utility model is in order to reach the further purpose of thin typeization, and at the grooving (36) of the set formation of flabellum (30) upper front end, it is after cover plate (40) lid is established, can make intake grill (41) inner edge of cover plate (40) be positioned at grooving (36) top, and the blade (33) of flabellum (30) can further be incorporated in the intake grill (41), and, blade (33) is the groove (35) of lateral root edge place setting down, then can be used as and avoid upward set electrical assembly of circuit board (21), blade (33) area of grooving (36) rear end then forms complementation with the area of groove (35) institute vacancy, therefore, the utility model can make fan can reach the more effect of thin typeization under the prerequisite of not reducing blade (33) area.
Again, the blade (33) of the utility model design has special angle, can be when fan (30) rotates, form better drainage effect, please cooperate and consult Fig. 4 and shown in Figure 5, wherein, the fan blade angles (θ) of blade (33), be towards the formed line stretcher in blade (33) positive camber (34) root edge place (P1) (a) by flabellum (30) central point, and blade (33) positive camber (34) root edge place (P1) is towards the angle of the formed line stretcher in blade (33) positive camber (34) tail end (P2) (b), this fan blade angles (θ) is then for spending smaller or equal to 40 more than or equal to 30 degree, please cooperate consult shown in Figure 5, another structure feature of flabellum of the present utility model (30), be to be positioned at intrados (37) leading edge place at blade (33) to be provided with tangent plane (38), make blade (33) and blade (33) exhaust outlet place form bigger A/F (c), this A/F (c) is promptly greater than the A/F of the blade of traditional type (d) in the past, and can reach the effect that increases air output.
The utility model is provided with intake grill (41) on cover plate (40), promptly as the top air flow inlet of fan, and intake grill (14) is set on the base plate (11) of base (10), then can make fan have two intake grills, suck air quantity and can increase, make in narrow limited zone, space,, can reach better radiating effect as the installing of notebook computer inside.
Please cooperate again consult shown in Figure 6, it is the three-dimensional exploded view that the utility model is applied to another kind of base (50) kenel, wherein, be laid with spaced radiating fin (52) on the base plate (51) of base (50), the middle part of base plate (51) is provided with intake grill (53), and flabellum of the present utility model (30) is arranged in the foot rest (54), be provided with intake grill (56) in one cover plate (55), foot rest (54) and cover plate (55) are locked on the radiating fin (52) with screw, and when flabellum (30) activates rotation, can also form two side air intakes, and the state of the priming of air-flow, and can blow out via each spaced radiating fin (52) side direction.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (4)
1, a kind of flabellum of fan, it is characterized in that it is to be provided with several pieces blades at the housing side face, the blade both sides are positive camber and intrados, the fan blade angles of blade, it is the line stretcher that forms towards blade positive camber root edge place by the flabellum central point, and blade positive camber root edge place is towards the angle of the formed line stretcher in blade positive camber tail end, and fan blade angles for more than or equal to 30 degree smaller or equal to 40 degree.
2, the flabellum of fan according to claim 1 is characterized in that wherein blade is positioned at formation tangent plane, intrados leading edge place.
3, the flabellum of fan according to claim 1 is characterized in that wherein the blade downside forms the upwards groove of turnover near housing side face handing-over position.
4,, it is characterized in that the wherein grooving on blade upper front end formation plane according to the flabellum of claim 1,2 or 3 described fans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01264405 CN2508028Y (en) | 2001-09-29 | 2001-09-29 | Blade of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01264405 CN2508028Y (en) | 2001-09-29 | 2001-09-29 | Blade of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2508028Y true CN2508028Y (en) | 2002-08-28 |
Family
ID=33671700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01264405 Expired - Fee Related CN2508028Y (en) | 2001-09-29 | 2001-09-29 | Blade of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2508028Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441882C (en) * | 2005-05-13 | 2008-12-10 | 台达电子工业股份有限公司 | Fan, shell and vane thereof |
| US7997871B2 (en) | 2007-08-03 | 2011-08-16 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Impeller for a cooling fan |
| US8007232B2 (en) | 2007-08-24 | 2011-08-30 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Centrifugal fan and impeller thereof |
| CN102207096A (en) * | 2010-03-30 | 2011-10-05 | 建准电机工业股份有限公司 | Radiating fan |
| CN101555887B (en) * | 2008-04-11 | 2012-07-25 | 富准精密工业(深圳)有限公司 | Fan blade structure of centrifugal fan |
| CN104847692A (en) * | 2013-12-04 | 2015-08-19 | 苹果公司 | Shrouded fan impeller with reduced cover overlap |
-
2001
- 2001-09-29 CN CN 01264405 patent/CN2508028Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441882C (en) * | 2005-05-13 | 2008-12-10 | 台达电子工业股份有限公司 | Fan, shell and vane thereof |
| US7997871B2 (en) | 2007-08-03 | 2011-08-16 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Impeller for a cooling fan |
| US8007232B2 (en) | 2007-08-24 | 2011-08-30 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Centrifugal fan and impeller thereof |
| CN101372987B (en) * | 2007-08-24 | 2012-09-19 | 富准精密工业(深圳)有限公司 | Fan vane structure and centrifugal fan having the same |
| CN101555887B (en) * | 2008-04-11 | 2012-07-25 | 富准精密工业(深圳)有限公司 | Fan blade structure of centrifugal fan |
| CN102207096A (en) * | 2010-03-30 | 2011-10-05 | 建准电机工业股份有限公司 | Radiating fan |
| CN102207096B (en) * | 2010-03-30 | 2013-09-04 | 建准电机工业股份有限公司 | Radiating fan |
| CN104847692A (en) * | 2013-12-04 | 2015-08-19 | 苹果公司 | Shrouded fan impeller with reduced cover overlap |
| CN104847692B (en) * | 2013-12-04 | 2018-09-28 | 苹果公司 | The blast fan with shield of lid overlapping with reduction |
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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: 20020828 Termination date: 20091029 |