CN101576093A - Fan and flow-guiding structure thereof - Google Patents
Fan and flow-guiding structure thereof Download PDFInfo
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- CN101576093A CN101576093A CNA2008100887876A CN200810088787A CN101576093A CN 101576093 A CN101576093 A CN 101576093A CN A2008100887876 A CNA2008100887876 A CN A2008100887876A CN 200810088787 A CN200810088787 A CN 200810088787A CN 101576093 A CN101576093 A CN 101576093A
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- flow
- guide structure
- flow guide
- wheel hub
- fan
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Abstract
The invention discloses a fan and a flow-guiding structure thereof. The fan comprises a flow-guiding structure, an impeller and a guide ring, wherein the outer diameter of the flow-guiding structure gradually extends to the bottom of the flow-guiding structure from the top of the flow-guiding structure; the impeller is arranged above the flow-guiding structure and provided with a hub and a plurality of fan blades, and the fan blades are arranged at the outer annular surface of the hub; and the guide ring is connected to the fan blades, the top of the guide ring is provided with an air inlet, and an air outlet is formed between the bottom edge of the guide ring and the outer annular surface of the bottom of the flow-guiding structure. When the impeller is rotated, air flow flows in from the air inlet, flows along the outer annular surface of the flow-guiding structure and flows out from the air outlet, and a direction of the air flow flowing out from the air outlet is different from the direction of the air flow flowing in from the air inlet.
Description
Technical field
The present invention relates to a kind of fan, particularly relate to a kind of fan and flow guide structure thereof that changes air flow direction.
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 energy 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 microelectronic element (intergrated circuit for example, IC) important especially, because along with the increase of level of integration and the progress of encapsulation technology, make the area of intergrated circuit constantly dwindle, simultaneously the heat energy 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 sink now, the most extensive is fan by the user.And, generally fan area can be divided into axial flow fan and centrifugal fan according to the inlet air of fan and the direction relations of air-out, and as depicted in figs. 1 and 2, Fig. 1 is the sectional view of existing a kind of centrifugal fan, Fig. 2 is the sectional view of existing a kind of axial flow fan.
In Fig. 1, the air-flow of existing axial flow fan 1 is to be flowed into by wind inlet 10, is flowed out by exhaust outlet 12 again, and the direction when direction when air-flow is flowed into by wind inlet 10 and air-flow are flowed out by exhaust outlet 12 is roughly the same.
In Fig. 2, the air-flow of existing centrifugal fan 2 is flowed into by wind inlet 10, is flowed out by exhaust outlet 22 again, and the 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.
Yet, be compared to axial flow fan, though centrifugal fan can reach the purpose that changes air-out direction, shortcoming such as have that efficient is not high, air output is lower and noise is bigger.
Summary of the invention
The object of the present invention is to provide a kind of fan and flow guide structure thereof, shaped design by flow guide structure, can change the flow direction of axial flow fan air-flow and reach the purpose that changes air-out direction, high efficiency, the air output that also can possess conventional axial flow fan simultaneously be big, with 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 this flow guide structure top, and has a wheel hub and a plurality of 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 of the root edge of this guide ring and this flow guide structure bottom.Air-flow is flowed into by this wind inlet when this wheel rotation, and flow and flow out along the outer ring surface of this flow guide structure again by this exhaust outlet, and the direction of the direction of air-flow when flowing out by exhaust outlet when being different from air-flow and flowing 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 a plurality of 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 this impeller below, 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, form an exhaust outlet between the outer ring surface of the root edge of this guide ring and this flow guide structure bottom, air-flow is flowed into by this wind inlet when this wheel rotation, and flow and flow out along the outer ring surface of this flow guide structure again by this exhaust outlet, and the direction of the direction of air-flow when flowing out by exhaust outlet when being different from air-flow and flowing 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 the exhaust outlet below of an axial flow fan, the wind inlet of this axial flow fan is positioned at the exhaust outlet top of this axial flow fan, 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, to change the flow direction of the air-flow of being sent by the exhaust outlet of this axial flow fan.
From the above, fan of the present invention and flow guide structure thereof are because the top flaring of outer this flow guide structure without leave of wherein flow guide structure to the bottom of this flow guide structure, makes air-flow flow and changed its flow direction when being sent along the outer ring surface of this flow guide structure.Compare with prior art, the present invention not only can reach the purpose that changes air-out direction, and can have high efficiency, air output is big and noise content is little advantage simultaneously concurrently.
Description of drawings
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 among 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 at existing axial flow fan below among Fig. 2.
The 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: first intended distance
Dy: the length of flabellum and wheel hub junction
Dz: second intended distance
Dz ': the 3rd intended distance
Embodiment
Please be simultaneously with reference to Fig. 3 and shown in Figure 4, Fig. 3 is the stereogram of the first embodiment of the present invention, Fig. 4 is the sectional view along A-A ' hatching among Fig. 3.As shown in the figure, fan 3 of the present invention is to comprise a flow guide structure 30, an impeller 32 and a guide ring 34.
The external diameter of flow guide structure 30 is the bottoms to flow guide structure 30 from the top of flow guide structure 30 flaring, and makes the outer ring surface of flow guide structure 30 form at least one curved surface.Impeller 32 is arranged at flow guide structure 30 tops, and impeller 32 has a wheel hub 320 and a plurality of flabellums 322.Flabellum 322 is arranged at the outer ring surface of wheel hub 320, and is provided with the motor (not shown) in the 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 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 of the root edge of guide ring 34 and flow guide structure 30 bottoms.The apical margin of the diameter self-aiming ring 34 of guide ring 34 is tapered to the apical margin of the junction of guide ring 34 and flabellum 322, is flowed into by wind inlet 341 with the more air-flows of guiding.And the apical margin of guide ring 34 has one first intended distance Dx between the apical margin of the junction of guide ring 34 and flabellum 322, and the length of flabellum 322 and wheel hub 320 junction is Dy, and the ratio of Dx/Dy can be 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 outboard end of the root edge of guide ring 34 and flabellum 322, and the ratio of Dz/Dy can be between 0～0.5.Profile by fan 3 of the present invention is seen it, and it is also at last for belonging to the fan of axial flow.
When impeller 32 is rotated by motor driven, guide ring 34 rotates with impeller 32, and air-flow is flowed into by wind inlet 341, flow and flow out along the outer ring surface of flow guide structure 30 again by exhaust outlet 342, direction when the direction when making air-flow by exhaust outlet 342 outflows is different from air-flow by wind inlet 341 inflows, that is the direction of air-flow when flowing into by wind inlet 341 with air-flow the direction during by exhaust outlet 342 outflows roughly orthogonal, and reach function as the conventional centrifugal fan.And the shaped design of flow guide structure 30 can make the crushing of air-flow in changing the process that flows to minimize.
Please refer to shown in Figure 5ly, 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, so identical member indicates with the components identical numbering, as a means of correspondence.The external diameter that its difference is flow guide structure 30a is the bottom to flow guide structure 30a from the top of flow guide structure 30a flaring, and makes the outer ring surface of flow guide structure 30a form at least one inclined-plane.
Please refer to shown in Figure 6ly, 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, so identical member indicates with the components identical numbering, as a means of correspondence.The external diameter that its difference is flow guide structure 30b is the bottom to flow guide structure 30b from the top of flow guide structure 30b flaring, 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 Figure 7ly, 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, so identical member indicates with the components identical numbering, as a means of correspondence.Its difference is the top flaring of the outer 320a of wheel hub without leave of wheel hub 320a to the bottom 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 Figure 8ly, 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, so identical member indicates with the components identical numbering, as a means of correspondence.Its difference is the top flaring of the outer 320b of wheel hub without leave of wheel hub 320b to the bottom 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 Figure 9ly, 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 the 5th embodiment haply, so identical member indicates with the components identical numbering, 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 is corresponding to the reentrant part 321 of wheel hub 320c.
Please refer to shown in Figure 10ly, 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, so identical member indicates with the components identical numbering, 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 has one the 3rd intended distance Dz ' between the root edge of the outboard end of the root edge of guide ring 34a and flabellum 322, and the length of flabellum 322 and wheel hub 320 junction is similarly Dy, and the ratio of Dz '/Dy can be between 0～0.5.
Please refer to shown in Figure 11ly, Figure 11 is the sectional view that the preferred embodiment of the flow guide structure of fan of the present invention is arranged at existing axial flow fan below among Fig. 2.As shown in the figure, the flow guide structure 30 ' of fan of the present invention is arranged at exhaust outlet 12 belows of existing axial flow fan 1 among Fig. 2, the wind inlet 10 of existing axial flow fan 1 is positioned at its exhaust outlet 12 tops, the external diameter of flow guide structure 30 ' is the bottom to flow guide structure 30 ' from the top of flow guide structure 30 ' flaring, 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 of sending 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 external diameter of the fan frame 11 of existing axial flow fan 1.And being familiar with this skill person such as all can learn easily, flow guide structure 30 ' can be linked to the fan frame 11 or the base 13 of axial flow fan 1 via connection piece, or be linked to base 13 and the link of fan between the frame 11, or directly be arranged on the module housing of heat radiation subject matter.
In sum, the present invention is by the shaped design of flow guide structure, even also the external diameter of flow guide structure from the top of flow guide structure flaring the bottom to flow guide structure, can make the fan of axial flow change its air-out direction, reach the function of centrifugal fan, and can possess the advantage of the big and low noise of axial flow fan high efficiency, air output.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should comprise in the appended claims its equivalent modifications of carrying out or change.
Claims (18)
1, a kind of fan comprises:
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;
Impeller is arranged at this flow guide structure top, and this impeller has a wheel hub and a plurality of flabellum, and those flabellums are arranged at the outer ring surface of this wheel hub; And
Guide ring, 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 of the root edge of this guide ring and this flow guide structure bottom;
Air-flow is flowed into by this wind inlet when this wheel rotation, and flow and flow out along the outer ring surface of this flow guide structure again by this exhaust outlet, and the direction of the direction of air-flow when flowing out by exhaust outlet when being different from air-flow and flowing into by wind inlet.
2, 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 a plurality of 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 this impeller below, 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, form an exhaust outlet between the outer ring surface of the root edge of this guide ring and this flow guide structure bottom, air-flow is flowed into by this wind inlet when this wheel rotation, flow and flow out along the outer ring surface of this flow guide structure again by this exhaust outlet, and the direction of the direction of air-flow when flowing out by exhaust outlet when being different from air-flow and flowing into by wind inlet.
3, flow guide structure as claimed in claim 2, the direction when direction when wherein air-flow is flowed into by wind inlet and air-flow are flowed out by exhaust outlet is roughly orthogonal.
4, flow guide structure as claimed in claim 2, wherein the interior side ring surface of this guide ring is linked to the external end edge of those flabellums.
5, flow guide structure as claimed in claim 2, wherein 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 and make the outer ring surface of this flow guide structure form at least one curved surface or at least one inclined-plane or at least one curved surface and at least one inclined-plane.
6, flow guide structure as claimed in claim 2, wherein the apical margin of this guide ring is to having one first intended distance between the apical margin of the junction of this guide ring and those flabellums, and the ratio of the length of this first intended distance and this flabellum and this wheel hub junction is between 0.3～1.
7, flow guide structure as claimed in claim 6, wherein the diameter of this guide ring is tapered to the apical margin of the junction of this guide ring and those flabellums from the apical margin of this guide ring.
8, flow guide structure as claimed in claim 2, wherein the root edge of this guide ring protrudes from the root edge of the outboard end of those flabellums.
9, flow guide structure as claimed in claim 8, the ratio of length that wherein has one second intended distance and this second intended distance and this flabellum and this wheel hub junction between the root edge of the outboard end of the root edge of this guide ring and those flabellums is between 0～0.5.
10, flow guide structure as claimed in claim 2, wherein the root edge of the outboard end of those flabellums protrudes from the root edge of this guide ring.
11, flow guide structure as claimed in claim 10, wherein have one the 3rd intended distance between the root edge of the outboard end of the root edge of this guide ring and those flabellums, and the ratio of the length of the 3rd intended distance and this flabellum and this wheel hub junction is between 0～0.5.
12, flow guide structure as claimed in claim 2, wherein the top flaring of outer this wheel hub without leave of this wheel hub is to the center section part of this wheel hub and make the outer ring surface of this wheel hub form at least one curved surface or at least one inclined-plane.
13, flow guide structure as claimed in claim 2, wherein outside this wheel hub without leave the top flaring of this wheel hub to the bottom of this wheel hub and make the outer ring surface of this wheel hub form at least one curved surface or at least one inclined-plane.
14, flow guide structure as claimed in claim 13, 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 is corresponding to the reentrant part of this wheel hub.
15, flow guide structure as claimed in claim 2, wherein the external diameter of the bottom of this flow guide structure is 1.3～3 times of external diameter of the bottom of this wheel hub.
16, a kind of flow guide structure of fan, be arranged at the exhaust outlet below of an axial flow fan, the wind inlet of this axial flow fan is positioned at the exhaust outlet top of this axial flow fan, 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, to change the flow direction of the air-flow of being sent by the exhaust outlet of this axial flow fan.
17, the flow guide structure of fan as claimed in claim 16, wherein 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, and makes the outer ring surface of this flow guide structure form at least one curved surface or at least one inclined-plane.
18, the flow guide structure of fan as claimed in claim 16, wherein the external diameter of the bottom of this flow guide structure is 0.9～2.5 times of external diameter of the fan frame of this fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100887876A CN101576093A (en) | 2008-05-07 | 2008-05-07 | Fan and flow-guiding structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100887876A CN101576093A (en) | 2008-05-07 | 2008-05-07 | Fan and flow-guiding structure thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310043344.6A Division CN103075371B (en) | 2008-05-07 | 2008-05-07 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101576093A true CN101576093A (en) | 2009-11-11 |
Family
ID=41271119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100887876A Pending CN101576093A (en) | 2008-05-07 | 2008-05-07 | Fan and flow-guiding structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101576093A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878117A (en) * | 2012-06-29 | 2013-01-16 | 中国船舶重工集团公司第七0九研究所 | Exhaust blower with outlet air guiding plate |
| CN105020177A (en) * | 2014-04-30 | 2015-11-04 | 台达电子工业股份有限公司 | Fan |
| CN108716473A (en) * | 2018-03-02 | 2018-10-30 | 青岛海信日立空调系统有限公司 | A kind of aerofoil fan and air-conditioner outdoor unit |
-
2008
- 2008-05-07 CN CNA2008100887876A patent/CN101576093A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878117A (en) * | 2012-06-29 | 2013-01-16 | 中国船舶重工集团公司第七0九研究所 | Exhaust blower with outlet air guiding plate |
| CN105020177A (en) * | 2014-04-30 | 2015-11-04 | 台达电子工业股份有限公司 | Fan |
| CN105020177B (en) * | 2014-04-30 | 2017-08-29 | 台达电子工业股份有限公司 | Fan |
| CN108716473A (en) * | 2018-03-02 | 2018-10-30 | 青岛海信日立空调系统有限公司 | A kind of aerofoil fan and air-conditioner outdoor unit |
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Application publication date: 20091111 |