CN1746511A - Fan - Google Patents
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- CN1746511A CN1746511A CN 200410079119 CN200410079119A CN1746511A CN 1746511 A CN1746511 A CN 1746511A CN 200410079119 CN200410079119 CN 200410079119 CN 200410079119 A CN200410079119 A CN 200410079119A CN 1746511 A CN1746511 A CN 1746511A
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- motor base
- guiding subassembly
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Abstract
A fan comprises a frame, motor base, impellers, flow guide parts and at least one flare opening. The frame has a column channel, of which one of the open ends is the air inlet and the other is the outlet. The motor base is in the frame too, with the impellers installed on it. The flare opening is fixed to the inlet or outlet and linked to the frame to increase air volume. The flow guide parts are fixed in between the frame and the motor base. One end of the flow guide parts is connected to the motor base; the other end is connected to the inner wall of the channel. This invention is capable of decreasing noise, slowing down air speed and commutating.
Description
Technical field
The invention relates to a kind of fan, particularly about a kind of axial flow fan.
Background technique
Continuous lifting along with electronic equipment usefulness, sink or radiation system have become one of outfit indispensable in the existing electronic equipment, because it is the heat that electronic equipment produced is if not in addition suitably dissipation gently then causes the usefulness variation, heavy then can cause burning of electronic equipment.Sink is for micromodule (intergrated circuit for example, integrated circuits) important especially, because along with the increase of integration and the progress of encapsulation technology, make the area of intergrated circuit constantly dwindle, simultaneously the heat accumulated of per unit area also relatively can be higher, so the sink of high heat dissipation efficiency is the positive object of researching and developing of electronic industry circle institute always.
In heat-generating system now, the most widely used sink is to be fan.Please refer to Figure 1A and Figure 1B, it is the schematic representation of existing fan.In Figure 1A, existing fan 10 comprises a fan frame 11, a motor base 12, an impeller 13 and rib 15a.Fan frame 11 has the framework 11 of a perforate, and motor base 12 is arranged in the framework 11, and rib 15a links motor base 12 and framework 11, and at Figure 1B, is to link motor base 12 and framework 11 with stator blade 15b.Yet, because the fan frame is to utilize mould manufacturing, no matter be rib 15a or stator blade 15b, be subject to the die sinking restriction of mould, when the demoulding, can produce remaining materials and parts 19 (block) in rib 15a or stator blade 15b and framework 11 junction, make airflow obstruction, and influence the unimpeded of original runner, and what is more, the influence of Chang Yinqi windage and produce noise and swash frequently, and when rotation speed of the fan edged up, the level of noise that it produced also promoted relatively.
Summary of the invention
Therefore, for addressing the above problem, the present invention proposes a kind of fan, can overcome to produce the shortcoming of remaining materials and parts after the frame die sinking is fanned in existing making, and have guiding subassembly and expanding part, can avoid noise to swash generation frequently, and reach the effect of deceleration and rectification.
A kind of fan according to an aspect of the present invention comprises a fan frame, a motor base, an impeller, a guiding subassembly and at least one expanding part.The fan frame is for having the framework of a column passage, and column passage two ends respectively form a wind inlet and an exhaust outlet on framework.Motor base is arranged in the framework, and impeller is arranged on the motor base, and guiding subassembly then is arranged between framework and the motor base.Guiding subassembly is arranged between framework and the motor base.Expanding part is arranged at wind inlet or exhaust outlet, and air-flow flows into or the area of outflow to increase, and expanding part links to each other with framework.Wherein, an end of guiding subassembly connects motor base, and the other end then is connected on the inwall of column passage.Impeller comprises a plurality of flabellums, and each flabellum has one first edge and one second edge, and first edge surface is to guiding subassembly, and second edge is guiding subassembly dorsad.First edge and second edge are to be parallel to each other or not parallel.
A kind of fan according to a further aspect of the invention comprises a fan frame, a motor base, an impeller, a guiding subassembly and at least one expanding part.The fan frame is the framework with a perforate, and perforate two ends respectively form a wind inlet and an exhaust outlet on framework.Motor base is arranged in the framework, and impeller is arranged on the motor base, and guiding subassembly then is arranged between framework and the motor base.Guiding subassembly comprises an outer ledge and an inside edge, and outer ledge is outside framework, and the inside edge is in framework, and outer ledge and inside edge are to be parallel to each other or not parallel.For example, to the framework direction, outer ledge is to move closer to or gradually away from the inside edge from motor base.Expanding part is arranged at wind inlet or exhaust outlet, and air-flow flows into or the area of outflow to increase, and expanding part links to each other with framework.Wherein, the outer ledge of guiding subassembly is to be positioned on the framework with the point of contact of fan frame, or is positioned at the framework part that links to each other with expanding part.Impeller comprises a plurality of flabellums, and each flabellum has one first edge and one second edge, and first edge surface is to guiding subassembly, and second edge is guiding subassembly dorsad.First edge and second edge are to be parallel to each other or not parallel.
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. is elaborated.
Description of drawings
Figure 1A and Figure 1B are the schematic representation of existing fan.
Fig. 2 A is the generalized section according to the fan of preferred embodiment of the present invention.
Fig. 2 B is the generalized section according to the another kind of fan of preferred embodiment of the present invention.
Fig. 3 A is the schematic representation according to a kind of fan of preferred embodiment of the present invention.
Fig. 3 B is the schematic representation according to the another kind of fan of preferred embodiment of the present invention.
Fig. 4 is the characteristic curve comparison diagram of existing fan and fan of the present invention.
Embodiment
Please be simultaneously with reference to Fig. 2 A and Fig. 2 B, Fig. 2 A is the generalized section according to the fan of preferred embodiment of the present invention, and Fig. 2 B is the generalized section according to the another kind of fan of preferred embodiment of the present invention.All disclose in Fig. 2 A and Fig. 2 B, fan 20 of the present invention for example is an axial flow fan, comprises a fan frame 21, a motor base 22, an impeller 23, a guiding subassembly 25 and at least one expanding part 26.Guiding subassembly 25 for example is rib or stator blade, and expanding part 26 for example is lead angle, oblique angle, leads oblique angle or big R angle.
Impeller 23 comprises a hub portion 27 and a plurality of flabellums 24, and each flabellum 24 is to link to each other with hub portion 27, and each flabellum 24 have one first edge 241 and 242, the first edges 241, one second edge towards guiding subassembly 25, the second edges 242 guiding subassembly 25 dorsad.
One end of guiding subassembly 25 connects motor base 22, and the other end then is connected on the inwall of column passage.In other words, guiding subassembly 25 comprises an outer ledge 252 and an inside edge 251, and outer ledge 252 is outside framework 21, and inside edge 251 is in framework 21.Wherein, the outer ledge of guiding subassembly 25 252 is to be positioned on the framework 21 with the point of contact of fan frame 21, or is positioned at the framework 21 part A that links to each other with expanding part 26, shown in Fig. 2 A.
Because the outer ledge 252 and the framework surface of guiding subassembly 25 are Different Plane, just will carry on the guiding subassembly 25 to framework 21, to form the degree of depth of a bullet sky, not only avoid existing fan frame after die sinking, can produce the shortcoming of remaining materials and parts in framework and stator blade joint, also owing to formed the degree of depth of a bullet sky, the function of fan one current stabilization is provided, and can utilize the degree of depth of this bullet sky and expanding part 26 is set, to increase the area that air-flow flows into or flows out, further promote blast and air quantity, and be arranged at exhaust outlet 212 places when expanding part 26, more can reach and slow down and the effect of rectification.
The spread pattern that several guiding subassemblies 25 are arranged between framework 21 and the motor base 22 for example is radial pattern, axial flow fan blade type etc., and the shape of guiding subassembly 25 for example is column type, circular arc type, polygon, polygonal, streamlined etc.The outer ledge 252 of each guiding subassembly 25 and inside edge 251 are to be parallel to each other or not parallel.For example, to framework 21 directions, outer ledge 252 is to move closer to (shown in Fig. 2 A) or gradually away from inside edge 251 from motor base 22.Perhaps, outer ledge 252 and inside edge 251 and motor base 22 connecting places apart from d1, be greater than outer ledge 252 and inside edge 251 and framework 21 connecting places apart from d2, shown in Fig. 2 A.Or, outer ledge 252 and inside edge 251 and motor base 22 connecting places apart from d1, be less than outer ledge 252 and inside edge 251 and framework 21 connecting places apart from d2.
First edge 241 of flabellum 24 and second edge 242 are to be parallel to each other or not parallel.For example, loose boss portion 27 is to framework 21 directions, and first edge 241 is to move closer to (shown in Fig. 2 A) or gradually away from second edge 242.Perhaps, first edge 241 and second edge 242 and hub portion 27 connecting places apart from d3, be greater than first edge 241 and second edge 242 in a tail end place of flabellum 24 apart from d4, shown in Fig. 2 A.Or, first edge 241 and second edge 242 and hub portion 27 connecting places apart from d3, be less than first edge 241 and second edge 242 in a tail end place of flabellum 24 apart from d4.
When impeller 23 is arranged on the motor base 22, first edge 241 of flabellum 24 is the inside edges 251 in the face of guiding subassembly 25, at different product demands, can carry out different designs for flabellum 24 with guiding subassembly 25, for example, first edge 241 of flabellum 24 is inside edge 251 parallel (shown in Fig. 2 A) or not parallel (shown in Fig. 2 B) with guiding subassembly 25.Perhaps, loose boss portion is to framework 21 directions, and first edge 241 of flabellum 24 is gradually away from (shown in Fig. 2 B) or move closer to the inside edge 251 of guiding subassembly 25.
When impeller 23 rotated, then its flow rate of fluid can be big more near flabellum 24 tail end places more, that is fluid is in can be bigger near the flow velocity at motor base 22 places compared to fluid near the flow velocity at framework 21 places.Because the present invention carries out different designs for flabellum 24 with guiding subassembly 25, therefore flabellum 24 is when rotating, can reduce the influence each other between the inside edge 251 of first edge 241 of flabellum 24 and guiding subassembly 25, windage is reduced, avoid noise to swash frequently and produce, reach the purpose that reduces noise.
Yet the present invention is not restricted to this, for example, except the design of guiding subassembly 25 and expanding part 26, can cooperate the side of motor base 24 to be radially tool one gradient again, can increase the area that air-flow flows out or flows into again, and this gradient for example is plane or curved surface.In addition, please refer to Fig. 3 A and Fig. 3 B, Fig. 3 A is the schematic representation according to a kind of fan of preferred embodiment of the present invention, and Fig. 3 B is the schematic representation according to the another kind of fan of preferred embodiment of the present invention.The shape of framework 21 does not limit, and for example is to be general square shape (as shown in Figure 3A), circular (shown in Fig. 3 B), ellipse, rhombus or other shape.
Please refer to Fig. 4, Fig. 4 is the characteristic curve comparison diagram of existing fan and fan of the present invention.By can obviously finding among the figure, use fan of the present invention, its blast and air quantity be big than existing fan all, and as with the about 90CFM of identical air quantity, existing fan can reach the only about 11.3mmH of blast
2O, however fan of the present invention can reach the about 22.7mmH of blast
2O.Perhaps, with the about 16.7mmH of identical blast
2O, existing fan can reach the only about 44CFM of air quantity, yet fan of the present invention can reach the about 139.5CFM of air quantity.In addition, to use 9 centimeters big small fans of the present invention and existing 9 centimeters big small fans, with same rotational speed 6000rpm, do sound test on 1 meter the position at distance fan wind inlet place, after comparison, can obviously find, measured high noisy value was about 63dBA when the flabellum of existing fan rotated, and used the fan of fan frame of the present invention, and measured level of noise was 58.5dBA when its flabellum rotated.Thus, can prove completely and use the fan with guiding subassembly and expanding part of the present invention, but really noise-decreasing swashs generation frequently, and effectively improve blast and air quantity, and reach the effect of deceleration and rectification.
Though the present invention discloses as above with a preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person without departing from the spirit and scope of the present invention; when the change that can make various equivalences or replacement, so protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (20)
1. fan comprises:
One fan frame is for having the framework of a column passage, and these column passage two ends respectively form a wind inlet and an exhaust outlet on this framework:
One motor base is arranged in this framework;
One impeller is arranged on this motor base;
One guiding subassembly is arranged between this framework and this motor base; And
At least one expanding part is arranged at this wind inlet or this exhaust outlet, and air-flow flows into or the area of outflow to increase, and this expanding part links to each other with this framework;
Wherein, an end of this guiding subassembly connects this motor base, and the other end then is connected on the inwall of this column passage.
2. fan as claimed in claim 1, it is characterized in that this guiding subassembly comprises an outer ledge and an inside edge, this outer ledge is outside this framework, and this inside edge is in this framework, and this outer ledge and this inside edge are to be parallel to each other or not parallel.
3. fan as claimed in claim 2 is characterized in that from this motor base to this framework direction, and this outer ledge is to move closer to or gradually away from this inside edge.
4. fan as claimed in claim 2 is characterized in that the distance of this outer ledge and this inside edge and this motor base connecting place, be greater than, be equal to or less than the distance of this outer ledge and this inside edge and this framework connecting place.
5. fan as claimed in claim 1, it is characterized in that this impeller comprises a hub portion and a plurality of flabellum, this flabellum is to link to each other with this hub portion, and each flabellum has one first edge and one second edge, this first edge surface is to this guiding subassembly, and this second edge is this guiding subassembly dorsad.
6. fan as claimed in claim 5 is characterized in that this first edge is parallel to each other or is not parallel to each other mutually with this second edge.
7. fan as claimed in claim 6 is characterized in that from this hub portion to this framework direction, and this first edge is to move closer to or gradually away from this second edge.
8. fan as claimed in claim 6 is characterized in that the distance of this first edge and this second edge and this impeller connecting place, be greater than, equal, or less than this first edge and this second edge in the distance at a tail end place of this flabellum.
9. fan as claimed in claim 5, first edge that it is characterized in that this flabellum are parallel or not parallel with the inside edge of this guiding subassembly.
10. fan as claimed in claim 9 is characterized in that from this hub portion to this framework direction, and first edge of this flabellum is to move closer to or gradually away from the inside edge of this guiding subassembly.
11. fan as claimed in claim 1 is characterized in that this guiding subassembly is a rib or stator blade.
12. fan as claimed in claim 1 is characterized in that this expanding part is a lead angle, oblique angle, leads oblique angle or big R angle, this framework be square, circular, ellipse or rhombus.
13. fan as claimed in claim 1 is characterized in that this fan is an axial flow fan.
14. fan as claimed in claim 1 is characterized in that the side of this motor base is radially tool one gradient, to increase the area that air-flow flows out or flows into.
15. fan as claimed in claim 14 is characterized in that this gradient is a plane or curved surface.
16. a fan comprises:
One fan frame has the framework of a perforate, and these perforate two ends respectively form a wind inlet and an exhaust outlet on this framework:
One motor base is arranged in this framework;
One impeller is arranged on this motor base;
One guiding subassembly is arranged between this framework and this motor base, and this guiding subassembly comprises an outer ledge and an inside edge, and this outer ledge is outside this framework, and this inside edge is in this framework; And
At least one expanding part is arranged at this wind inlet or this exhaust outlet, and air-flow flows into or the area of outflow to increase, and this expanding part links to each other with this framework;
Wherein, the point of contact of the outer ledge of this guiding subassembly and this fan frame is to be positioned on this framework, or is positioned at this framework part that links to each other with this expanding part.
17. fan as claimed in claim 16 is characterized in that this outer ledge and this inside edge are to be parallel to each other or to be not parallel to each other mutually.
18. fan as claimed in claim 17 is characterized in that from this motor base to this framework direction, this outer ledge is to move closer to or gradually away from this inside edge.
19. fan as claimed in claim 17 is characterized in that the distance of this outer ledge and this inside edge and this motor base connecting place, be greater than, be equal to or less than the distance of this outer ledge and this inside edge and this framework connecting place.
20. fan as claimed in claim 16, it is characterized in that this impeller comprises a hub portion and a plurality of flabellum, this flabellum is to link to each other with this hub portion, and each flabellum has one first edge and one second edge, this first edge surface is to this guiding subassembly, this second edge is this guiding subassembly dorsad, and this first edge is to be parallel to each other or to be not parallel to each other mutually with this second edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100791199A CN100510425C (en) | 2004-09-08 | 2004-09-08 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100791199A CN100510425C (en) | 2004-09-08 | 2004-09-08 | Fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1746511A true CN1746511A (en) | 2006-03-15 |
| CN100510425C CN100510425C (en) | 2009-07-08 |
Family
ID=36166173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100791199A Ceased CN100510425C (en) | 2004-09-08 | 2004-09-08 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100510425C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008154793A1 (en) * | 2007-06-15 | 2008-12-24 | Biao Qin | An elecronic chip heat disspition fan |
| CN101205933B (en) * | 2006-12-19 | 2011-04-20 | 台达电子工业股份有限公司 | Airflow commutating device and serial fan |
| CN102374200A (en) * | 2010-08-17 | 2012-03-14 | 建准电机工业股份有限公司 | Radiator fan |
| CN107427706A (en) * | 2015-03-12 | 2017-12-01 | 群领公司 | Fire ventilation machine with oval air jet stream |
| TWI674363B (en) * | 2018-08-23 | 2019-10-11 | 建準電機工業股份有限公司 | Fan frame for noise reduction |
-
2004
- 2004-09-08 CN CNB2004100791199A patent/CN100510425C/en not_active Ceased
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205933B (en) * | 2006-12-19 | 2011-04-20 | 台达电子工业股份有限公司 | Airflow commutating device and serial fan |
| WO2008154793A1 (en) * | 2007-06-15 | 2008-12-24 | Biao Qin | An elecronic chip heat disspition fan |
| CN102374200A (en) * | 2010-08-17 | 2012-03-14 | 建准电机工业股份有限公司 | Radiator fan |
| CN107427706A (en) * | 2015-03-12 | 2017-12-01 | 群领公司 | Fire ventilation machine with oval air jet stream |
| CN107427706B (en) * | 2015-03-12 | 2020-07-07 | 群领公司 | Fire fighting ventilator with elliptical air jet |
| TWI674363B (en) * | 2018-08-23 | 2019-10-11 | 建準電機工業股份有限公司 | Fan frame for noise reduction |
| CN110857706A (en) * | 2018-08-23 | 2020-03-03 | 建凖电机工业股份有限公司 | Fan frame capable of reducing noise |
| CN110857706B (en) * | 2018-08-23 | 2020-12-29 | 建凖电机工业股份有限公司 | Fan frame capable of reducing noise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100510425C (en) | 2009-07-08 |
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Decision date of declaring invalidation: 20110304 Decision number of declaring invalidation: 16126 Granted publication date: 20090708 |