CN103075371B - Fan - Google Patents
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- CN103075371B CN103075371B CN201310043344.6A CN201310043344A CN103075371B CN 103075371 B CN103075371 B CN 103075371B CN 201310043344 A CN201310043344 A CN 201310043344A CN 103075371 B CN103075371 B CN 103075371B
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- fan
- guide structure
- wheel hub
- flow guide
- flow
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Abstract
The invention discloses a fan, which comprises a flow guide structure, an impeller and a guide ring. The external diameter of the flow guide structure is gradually increased from the top of the flow guide structure to the bottom of the flow guide structure; the impeller is arranged above the flow guide structure, and is provided with a hub and a plurality of fan blades; the fan blades are arranged on the outer ring surface of the hub; the guide ring is connected to the fan blades; the top of the guide ring is provided with an air inlet; an air outlet is formed between the bottom edge of the guide ring and the outer ring surface of the flow guide structure; and the diameter of the guide ring is gradually decreased from the top edge of the guide ring to the top edge of the joint of the guide ring and each fan blade to guide more airflow to flow into the air inlet.
Description
The application is the divisional application that name is called " fan and flow guide structure thereof ", application number is the application for a patent for invention of 200810088787.6 that Taida Electronic Industry Co Ltd submitted on 05 07th, 2008.
Technical field
The present invention relates to a kind of fan, particularly relate to a kind of fan changing air flow direction.
Background technique
Along with the continuous lifting of electronic equipment usefulness, sink or radiation system have become one of outfit indispensable in existing electronic equipment, if because the heat energy not suitably dissipation in addition that electronic equipment produces, gently then cause performance degradation, heavy then burning of electronic equipment can be caused.Sink is for microelectronic element (such as intergrated circuit, IC) important especially, because along with the increase of level of integration and the progress of encapsulation technology, the area of intergrated circuit is constantly reduced, the heat energy that per unit area is accumulated simultaneously also relatively can be higher, therefore the sink of high heat dissipation efficiency is the object that electronic industry circle is is actively researched and developed always.
In sink now, be the most extensively fan by user.And according to the inlet air of fan and the direction relations of air-out, generally fan area can be divided into axial flow fan and centrifugal fan, as depicted in figs. 1 and 2, Fig. 1 is the sectional view of existing a kind of centrifugal fan, and Fig. 2 is the sectional view of existing a kind of axial flow fan.
In FIG, the air-flow of existing axial flow fan 1 is flowed into by wind inlet 10, then flowed out by exhaust outlet 12, and direction when direction when air-flow is flowed into by wind inlet 10 is flowed out by exhaust outlet 12 with air-flow is roughly the same.
In fig. 2, the air-flow of existing centrifugal fan 2 is flowed into by wind inlet 10, then is flowed out by exhaust outlet 22, and direction when direction when air-flow is flowed into by wind inlet 10 and air-flow are flowed out by exhaust outlet 22 is roughly orthogonal.
But, be compared to axial flow fan, though centrifugal fan can reach change the object of air-out direction, the shortcoming such as have that efficiency is not high, air output is lower and noise is larger.
Summary of the invention
The object of the present invention is to provide a kind of fan, by the profile design of flow guide structure, the flow direction of axial flow fan air-flow can be changed and reach and change the object of air-out direction, also can possess simultaneously the high efficiency of conventional axial flow fan, air output large, with the advantage such as low noise.
For reaching above-mentioned purpose, the present invention proposes a kind of fan, and it comprises a flow guide structure, an impeller and a guide ring.The top flaring of outer this flow guide structure without leave of this flow guide structure is to the bottom of this flow guide structure.This impeller is arranged at above this flow guide structure, and has a wheel hub and multiple flabellum, and those flabellums are arranged at the outer ring surface of this wheel hub.This guide ring is linked to those flabellums, and the top of this guide ring has a wind inlet, forms an exhaust outlet between the outer ring surface bottom the root edge of this guide ring and this flow guide structure.When this wheel rotation, air-flow is flowed into by this wind inlet, then along this flow guide structure outer ring surface flowing and flowed out by this exhaust outlet, and direction when air-flow is flowed out by exhaust outlet is different from direction when air-flow is flowed into by wind inlet.
For reaching above-mentioned purpose, the present invention reintroduces a kind of flow guide structure, it is applied to an axial flow fan, this axial flow fan comprises an impeller and a guide ring, this impeller has a wheel hub and multiple flabellum, those flabellums are arranged at the outer ring surface of this wheel hub, this guide ring is linked to those flabellums, this flow guide structure is arranged at below this impeller, the top flaring of outer this flow guide structure without leave of this flow guide structure is to the bottom of this flow guide structure, the top of this guide ring has a wind inlet, an exhaust outlet is formed between outer ring surface bottom the root edge of this guide ring and this flow guide structure, when this wheel rotation, air-flow is flowed into by this wind inlet, again along this flow guide structure outer ring surface flowing and flowed out by this exhaust outlet, and the direction of air-flow when being flowed out by exhaust outlet is different from direction when air-flow is flowed into by wind inlet.
For reaching above-mentioned purpose, the present invention more proposes a kind of flow guide structure of fan, it is arranged at below the exhaust outlet of an axial flow fan, the wind inlet of this axial flow fan is positioned at above the exhaust outlet of this axial flow fan, the top flaring of outer this flow guide structure without leave of this flow guide structure to the bottom of this flow guide structure, to change the flow direction of the air-flow sent by the exhaust outlet of this axial flow fan.
From the above, fan of the present invention, because the top flaring of outer this flow guide structure without leave of flow guide structure is wherein to the bottom of this flow guide structure, changes it when air-flow is sent along the outer ring surface flowing of this flow guide structure and flows to.Compare with prior art, the present invention can not only reach and change the object of air-out direction, and can combining efficient rate, air output is large and noise content is little advantage simultaneously.
Accompanying drawing explanation
Fig. 1 is the sectional view of existing a kind of axial flow fan;
Fig. 2 is the sectional view of existing a kind of centrifugal fan;
Fig. 3 is the stereogram of the first embodiment of the present invention;
Fig. 4 is the sectional view along A-A' hatching in Fig. 3;
Fig. 5 is the sectional view of the second embodiment of the present invention;
Fig. 6 is the sectional view of the third embodiment of the present invention;
Fig. 7 is the sectional view of the fourth embodiment of the present invention;
Fig. 8 is the sectional view of the fifth embodiment of the present invention;
Fig. 9 is the sectional view of the sixth embodiment of the present invention;
Figure 10 is the sectional view of the seventh embodiment of the present invention;
Figure 11 is the sectional view that the preferred embodiment of the flow guide structure of fan of the present invention is arranged in Fig. 2 below existing axial flow fan.
Primary component symbol description
1: axial flow fan 10,20: wind inlet
11: fan frame 12,22: exhaust outlet
13: base 2: centrifugal fan
3: fan 30,30 ', 30a, 30b, 30c: flow guide structure
301: protuberance 32: impeller
320,320a, 320b, 320c: wheel hub 321: reentrant part
322: flabellum 34,34a: guide ring
341: wind inlet 342: exhaust outlet
4,5,6,7,8,9: fan
Dx: the first intended distance
Dy: the length of flabellum and wheel hub junction
Dz: the second intended distance
Dz ': the three intended distance
Embodiment
Shown in Fig. 3 and Fig. 4, Fig. 3 is the stereogram of the first embodiment of the present invention, and Fig. 4 is the sectional view along A-A' hatching in Fig. 3.As shown in the figure, fan 3 of the present invention comprises flow guide structure 30, impeller 32 and a guide ring 34.
The external diameter of flow guide structure 30 is the bottoms from the top flaring of flow guide structure 30 to flow guide structure 30, and makes the outer ring surface of flow guide structure 30 form at least one curved surface.Impeller 32 is arranged at above flow guide structure 30, and impeller 32 has a wheel hub 320 and multiple flabellum 322.Flabellum 322 is arranged at the outer ring surface of wheel hub 320, and is provided with motor (not shown) in wheel hub 320, and the top flaring of the outer wheel hub without leave 320 of wheel hub 320 is to the center section part of wheel hub 320.Preferably, the external diameter of the bottom of flow guide structure 30 can be 1.3 ~ 3 times of the external diameter of the bottom of wheel hub 320.
The interior side ring surface of guide ring 34 is linked to the external end edge of flabellum 322, and the apical margin of guide ring 34 has a wind inlet 341, forms an exhaust outlet 342 between the outer ring surface bottom the root edge of guide ring 34 and flow guide structure 30.The apical margin of the diameter self-aiming ring 34 of guide ring 34 is tapered to guide ring 34 and the apical margin of the junction of flabellum 322, is flowed into by wind inlet 341 to guide more air-flows.And the apical margin of guide ring 34 to the junction of guide ring 34 and flabellum 322 apical margin between there is one first intended distance Dx, and flabellum 322 and the length of wheel hub 320 junction are Dy, and the ratio of Dx/Dy can between 0.3 ~ 1; The root edge of guide ring 34 protrudes from the root edge of the outboard end of flabellum 322, has one second intended distance Dz between the root edge of the root edge of guide ring 34 and the outboard end of flabellum 322, and the ratio of Dz/Dy can between 0 ~ 0.5.See it by the profile of fan 3 of the present invention, it also can be regarded as the fan for belonging to axial flow.
When impeller 32 is driven by a motor and rotates, guide ring 34 rotates together with impeller 32, and air-flow is flowed into by wind inlet 341, again along flow guide structure 30 outer ring surface flowing and flowed out by exhaust outlet 342, direction when air-flow is flowed out by exhaust outlet 342 is different from direction when air-flow is flowed into by wind inlet 341, that is the direction of air-flow when being flowed into by wind inlet 341 and air-flow direction when being flowed out by exhaust outlet 342 is roughly orthogonal, and reach the function as conventional centrifugal fan.Further, the profile design of flow guide structure 30 can make the crushing of air-flow in the process changing the flow direction minimize.
Please refer to shown in Fig. 5, Fig. 5 is the sectional view of the second embodiment of the present invention.As shown in the figure, the structural design of fan 4 of the present invention is identical with aforesaid first embodiment haply, therefore identical component indicates with identical element number, as a means of correspondence.Its difference is the external diameter of flow guide structure 30a from the top flaring of flow guide structure 30a to the bottom of flow guide structure 30a, and makes the outer ring surface of flow guide structure 30a form at least one inclined-plane.
Please refer to shown in Fig. 6, Fig. 6 is the sectional view of the third embodiment of the present invention.As shown in the figure, the structural design of fan 5 of the present invention is identical with aforesaid first embodiment haply, therefore identical component indicates with identical element number, as a means of correspondence.Its difference is the external diameter of flow guide structure 30b from the top flaring of flow guide structure 30b to the bottom of flow guide structure 30b, and makes the outer ring surface of flow guide structure 30b form at least one inclined-plane and at least one curved surface.
Please refer to shown in Fig. 7, Fig. 7 is the sectional view of the fourth embodiment of the present invention.As shown in the figure, the structural design of fan 6 of the present invention is identical with aforesaid first embodiment haply, therefore identical component indicates with identical element number, as a means of correspondence.Its difference is the bottom of top flaring to wheel hub 320a of the outer 320a of wheel hub without leave of wheel hub 320a, and makes the outer ring surface of wheel hub 320a form at least one curved surface, flows into more swimmingly with air-guiding.
Please refer to shown in Fig. 8, Fig. 8 is the sectional view of the fifth embodiment of the present invention.As shown in the figure, the structural design of fan 7 of the present invention is identical with aforesaid first embodiment haply, therefore identical component indicates with identical element number, as a means of correspondence.Its difference is the bottom of top flaring to wheel hub 320b of the outer 320b of wheel hub without leave of wheel hub 320b, and makes the outer ring surface of wheel hub 320b form at least one inclined-plane.
Please refer to shown in Fig. 9, Fig. 9 is the sectional view of the sixth embodiment of the present invention.As shown in the figure, the structural design of fan 8 of the present invention is identical with aforesaid 5th embodiment haply, therefore identical component indicates with identical element number, as a means of correspondence.Its difference is that the bottom of wheel hub 320c has a reentrant part 321, and in order to die sinking, and the top of flow guide structure 30c has a protuberance 301, and protuberance 301 corresponds to the reentrant part 321 of wheel hub 320c.
Please refer to shown in Figure 10, Figure 10 is the sectional view of the seventh embodiment of the present invention.As shown in the figure, the structural design of fan 9 of the present invention is identical with aforesaid first embodiment haply, therefore identical component indicates with identical element number, as a means of correspondence.Its difference is that the root edge of the outboard end of flabellum 322 protrudes from the root edge of guide ring 34a, and there is between the root edge of the outboard end of the root edge of guide ring 34a and flabellum 322 one the 3rd intended distance Dz ', and flabellum 322 and the length of wheel hub 320 junction are similarly Dy, the ratio of Dz '/Dy can between 0 ~ 0.5.
Please refer to shown in Figure 11, Figure 11 is the sectional view that the preferred embodiment of the flow guide structure of fan of the present invention is arranged in Fig. 2 below existing axial flow fan.As shown in the figure, the flow guide structure 30 ' of fan of the present invention is arranged at below the exhaust outlet 12 of existing axial flow fan 1 in Fig. 2, the wind inlet 10 of existing axial flow fan 1 is positioned at above its exhaust outlet 12, the external diameter of flow guide structure 30 ' from the top flaring of flow guide structure 30 ' to the bottom of flow guide structure 30 ', and make the outer ring surface of flow guide structure 30 ' form at least one curved surface, to change the flow direction of the air-flow sent by the exhaust outlet 12 of existing axial flow fan 1.And preferably, the external diameter of the bottom of flow guide structure 30 ' can be 0.9 ~ 2.5 times of the external diameter of the fan frame 11 of existing axial flow fan 1.And being such as familiar with this those skilled in the art all can apparent, flow guide structure 30 ' can be linked to fan frame 11 or the base 13 of axial flow fan 1 via connection piece, or the link be linked between base 13 and fan frame 11, or be directly arranged on the module housing of heat radiation subject matter.
In sum, the present invention is by the profile design of flow guide structure, even if also the external diameter of flow guide structure from the top flaring of flow guide structure to the bottom of flow guide structure, the fan of axial flow can be made to change its air-out direction, reach the function of centrifugal fan, and the advantage of the large and low noise of axial flow fan high efficiency, air output can be possessed.
The foregoing is only illustrative, but not be restricted person.Anyly do not depart from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should comprise in the appended claims.
Claims (15)
1. a fan, comprising:
One flow guide structure, the top flaring of outer this flow guide structure without leave of this flow guide structure is to the bottom of this flow guide structure;
One impeller, is arranged at above this flow guide structure, and this impeller has a wheel hub and multiple flabellum, and those flabellums are arranged at the outer ring surface of this wheel hub; And
One guide ring, this guide ring is linked to this flabellum, and the top of this guide ring has a wind inlet, forms an exhaust outlet between the root edge of this guide ring and the outer ring surface of this flow guide structure;
Wherein the diameter of this guide ring is tapered to the apical margin of the junction of itself and this flabellum from its apical margin, is flowed into by this wind inlet to guide more air-flows,
Wherein this guide ring apical margin to the junction of this guide ring and this flabellum apical margin between there is one first intended distance, and the ratio of the length of this first intended distance and this flabellum and this wheel hub junction is between 0.3 ~ 1.
2. fan as claimed in claim 1, wherein the end face of this impeller and the end face of this guide ring not contour.
3. fan as claimed in claim 1, wherein when this wheel rotation, air-flow is flowed into by this wind inlet, again along this flow guide structure outer ring surface flowing and flowed out by this exhaust outlet, and direction when air-flow is flowed out by this exhaust outlet is different from direction when air-flow is flowed into by this wind inlet.
4. fan as claimed in claim 1, wherein outer this flow guide structure without leave of this flow guide structure top flaring to this flow guide structure bottom and make the outer ring surface of this flow guide structure form at least one curved surface, at least one inclined-plane or at least one curved surface and at least one inclined-plane.
5. fan as claimed in claim 1, wherein the root edge of this guide ring protrudes from the root edge of the outboard end of this flabellum.
6. fan as claimed in claim 1, between the root edge of the wherein root edge of this guide ring and the outboard end of this flabellum, there is one second intended distance and the ratio of the length of this second intended distance and this flabellum and this wheel hub junction between 0 ~ 0.5.
7. fan as claimed in claim 1, wherein the root edge of the outboard end of this flabellum protrudes from the root edge of this guide ring.
8. fan as claimed in claim 7, have one the 3rd intended distance, and the ratio of the length of the 3rd intended distance and this flabellum and this wheel hub junction is between 0 ~ 0.5 between the root edge of the wherein root edge of this guide ring and the outboard end of this flabellum.
9. fan as claimed in claim 1, wherein outer this wheel hub without leave of this wheel hub top flaring to this wheel hub center section part and make the outer ring surface of this wheel hub form at least one curved surface or at least one inclined-plane.
10. fan as claimed in claim 1, wherein outside this wheel hub without leave this wheel hub top flaring to this wheel hub bottom and make the outer ring surface of this wheel hub form at least one curved surface or at least one inclined-plane.
11. fans as claimed in claim 1, wherein the bottom of this wheel hub has a reentrant part, and the top of this flow guide structure has a protuberance, and this protuberance corresponds to the reentrant part of this wheel hub.
12. fans as claimed in claim 1, wherein the external diameter of the bottom of this flow guide structure is 1.3 ~ 3 times of the external diameter of the bottom of this wheel hub.
13. fans as claimed in claim 1, it more comprises a fan frame, and wherein the external diameter of the bottom of this flow guide structure is 0.9 ~ 2.5 times of this fan frame external diameter.
14. fans as claimed in claim 1, wherein this flow guide structure is linked to fan frame or the base of this fan via a connection piece.
15. fans as claimed in claim 1, wherein this flow guide structure is linked to the link between the base of this fan and fan frame, or is directly arranged on the module housing of a heat radiation subject matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310043344.6A CN103075371B (en) | 2008-05-07 | 2008-05-07 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310043344.6A CN103075371B (en) | 2008-05-07 | 2008-05-07 | Fan |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100887876A Division CN101576093A (en) | 2008-05-07 | 2008-05-07 | Fan and flow-guiding structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075371A CN103075371A (en) | 2013-05-01 |
| CN103075371B true CN103075371B (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310043344.6A Active CN103075371B (en) | 2008-05-07 | 2008-05-07 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103075371B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI648473B (en) * | 2017-10-20 | 2019-01-21 | 財團法人工業技術研究院 | fan |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406092Y (en) * | 1999-11-10 | 2000-11-15 | 日高工程实业股份有限公司 | Cover for axial-flow type air-exhausting machine |
| JP2001140798A (en) * | 1999-11-12 | 2001-05-22 | Matsushita Refrig Co Ltd | Blower |
| JP4121251B2 (en) * | 2001-03-06 | 2008-07-23 | 株式会社クボタ | Diagonal or axial flow pump |
| CN100529428C (en) * | 2005-08-05 | 2009-08-19 | 富准精密工业(深圳)有限公司 | Radiation fan |
| CN1793665A (en) * | 2006-01-12 | 2006-06-28 | 上海交通大学 | Low noise axial fan with rotary deflecting ring |
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2008
- 2008-05-07 CN CN201310043344.6A patent/CN103075371B/en active Active
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| Publication number | Publication date |
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| CN103075371A (en) | 2013-05-01 |
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