CN1614241A - Centrifugal fan and its frame structure - Google Patents
Centrifugal fan and its frame structure Download PDFInfo
- Publication number
- CN1614241A CN1614241A CN 200310114224 CN200310114224A CN1614241A CN 1614241 A CN1614241 A CN 1614241A CN 200310114224 CN200310114224 CN 200310114224 CN 200310114224 A CN200310114224 A CN 200310114224A CN 1614241 A CN1614241 A CN 1614241A
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- centrifugal fan
- movable vane
- gas collection
- wall
- collection runner
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Abstract
A centrifugal fan is composed of a fan frame with at least one air inlet and one air outlet, and at least one rotary blade unit arranged in said fan frame and with at least one group of blades. The internal boundary of said air inlet has an extended wall to form an air gathering channel for increasing wind pressure and heat dissipating efficiency.
Description
(1) technical field
The relevant a kind of centrifugal fan of the present invention, relevant specifically a kind of centrifugal fan and fan frame structure thereof that improves blast.
(2) background technique
General known blower, as shown in Figure 1, comprise a housing 10, a motor 20 and a blade structure 30, wherein housing 10 has a suction port 11 and a relief opening (not shown), motor 20 is placed on the pedestal 101 of housing 10, in order to rotate blade structure 30.Blade structure 30 also comprises a wheel hub 31, a base plate 32 and a plurality of wheel blade formed thereon 33.In this traditional blower design, because its wheel blade is directly to contact runner, and air gap is big about the wheel blade, and wayward airflow direction causes air circulation easily, thereby causes the radiating efficiency step-down.
Therefore, along with the enhancing efficiency of electrical assembly, in order to promote the radiating efficiency of fan, the mode that can increase its housing inner flow passage increases air output.Yet in limited space, this practice is also infeasible, and causes problems such as air output inequality, noise and air output minimizing to produce easily.Another kind of known improvement technology then is to increase lobe numbers and size, but limited because of on the space, it can drive the rotation of air-flow, can reduce the radiating efficiency of centrifugal fan itself on the contrary.
(3) summary of the invention
Main purpose of the present invention provides a kind of centrifugal fan and fan frame structure thereof, and it has the function that significantly promotes blast.
Another object of the present invention provides a kind of centrifugal fan and fan frame structure thereof, and it can make air stream elongated through the pressure process of electric fan, to avoid the variation rapidly of blast.
According to a conception of the present invention, this centrifugal fan comprises a fan frame, has an at least one wind inlet and an exhaust outlet; And at least one movable vane portion, being arranged in this fan frame, it has at least one vane group, and wherein this at least one wind inlet inner edge has the wall that extends, and the space that this wall will be fanned in the frame forms a gas collection runner, in order to promote blast.
Preferably, this fan frame has one first framework and one second framework, and wherein this first framework has a base, and in order to accepting this movable vane portion, and this at least one wind inlet is formed on this second framework.
This centrifugal fan also comprises a drive unit, is socketed on the receiver of this base, in order to rotate this movable vane portion.
Preferably, an end of this wall has a flange, to form the inlet of this gas collection runner.And this movable vane portion has one first vane group and one second vane group, and wherein this first vane group is positioned near the wind inlet of this fan frame, and this second vane group is near the ingress of this gas collection runner and be horizontal radial and extend.Wherein, this movable vane portion also comprises a wheel hub, and a plurality of blade rings of this vane group are located at around it, and an end of this wheel hub has an extension part, is horizontal radial towards the ingress of this gas collection runner and extends.The vane group of this at least one movable vane portion is horizontal radial with this extension part extends, and air-flow is guided in this gas collection runner.
Perhaps, the base of this fan frame has the wall that extends, and the wall that is extended with this wind inlet forms the inlet of this gas collection runner jointly.Partly be horizontal radial in the middle of the vane group of this at least one movable vane portion and extend, air-flow is guided in this gas collection runner towards the Way in of this gas collection runner.
Preferably, this wall is to extend wall by twice to be constituted.
In addition, this centrifugal fan comprises that also at least one stator blade portion is arranged at this wall or this at least one wind inlet place, in order to increase blast.Wherein, this at least one stator blade portion and should be at least one movable vane portion can be mutual up and down configuration arrangement.Perhaps, this at least one movable vane portion comprises one first vane group and one second vane group, lays respectively at the both sides up and down of this at least one stator blade portion.This at least one stator blade portion can be identical or inequality with the number of this at least one movable vane portion.
Preferably, this movable vane portion axially on, the runner height of the height of this gas collection runner and this sound leaf partly or fully overlaps.Wherein, the sectional area of this gas collection runner equates with the sectional area of this exhaust outlet.
Preferably, the vane group of this at least one movable vane portion has an inclined-plane respectively in the side near this wind inlet.
And this centrifugal fan can be a unidirectional wind input type blower, reversely hung Yong centrifugal fan or two-way wind input type blower.
Preferably, this at least one movable vane portion comprises one first movable vane portion and one second movable vane portion, and both are by screwing togather, fasten, fuse or the bonding mode being combined.
According to another conception of the present invention, this centrifugal fan comprises a fan frame, has at least one wind inlet, an exhaust outlet and at least one stator blade portion; And at least one movable vane portion, being arranged in this fan frame, it has at least one movable vane portion, and this movable vane portion is made up of a plurality of blade.The blade shape of this at least one stator blade portion can be similar to the blade profile of this movable vane portion.
For further specifying above-mentioned purpose of the present invention, structural feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the exploded perspective view figure of known blower.
Fig. 2 A is the exploded perspective view of first preferred embodiment of centrifugal fan of the present invention.
Fig. 2 B is the sectional drawing of the centrifugal fan shown in Fig. 2 A.
Fig. 3 is the sectional drawing of second preferred embodiment of centrifugal fan of the present invention.
Fig. 4 is the sectional drawing of the 3rd preferred embodiment of centrifugal fan of the present invention.
Fig. 5 is the sectional drawing of the 4th preferred embodiment of centrifugal fan of the present invention.
The 6th figure is the known blower and the airflow pressure characteristic comparison diagram of centrifugal fan of the present invention.
(5) embodiment
See also Fig. 2 A and 2B, it shows first preferred embodiment of centrifugal fan of the present invention.This centrifugal fan is the blower of a unidirectional wind input type, and it mainly comprises one first framework 21, one second framework 22, a drive unit 23 and a movable vane portion 24.This first framework 21 has a receiver 211, make this drive unit 23 thereon bearable, this second framework 22 has a wind inlet 221 and from the downward wall 222 that extends of wind inlet inner edge, after this second framework 22 and this first framework 21 make up, make up the space that forms a gas collection runner 25 and ccontaining this movable vane portion 24 in formed space, back by this wall 222 in this second framework 22 and this first framework 21, also form an exhaust outlet 212 simultaneously.This wall bottom has a flange that extends radially outwardly 223, in order to form an inlet 251 of this gas collection runner.This movable vane portion has first vane group 241 and second vane group 242, both all are made up of a plurality of blade, wherein this second vane group 242 is positioned near the ingress of this gas collection runner, and this first vane group 241 then is positioned near the wind inlet 221 of this second framework 22.This movable vane portion 24 is driven by this drive unit 23.
When this centrifugal fan running, air-flow is after this wind inlet is inhaled into, first vane group 241 through this movable vane portion, and via near this second vane group 242 the ingress that is positioned at this gas collection runner guiding enters this gas collection runner, pressurize and gas storage, discharge the air-flow of high blast again from this exhaust outlet.
The wall that the wind inlet edge of centrifugal fan of the present invention extends downwards only stays a less exhaust outlet in order to separate gas collection runner and movable vane portion, and the pressure process of the air stream of feasible this movable vane portion that flows through is elongated, can avoid the variation rapidly of pressure.This movable vane portion axially on, the runner height of the height of this gas collection runner and this sound leaf can partly or fully overlap, but makes this centrifugal fan slimming.And the sectional area of this gas collection runner equates with the sectional area of this exhaust outlet, can avoid the change of air-flow because of area by this, and makes work doing efficiency reduce.
In addition, each blade of this vane group has an inclined-plane respectively in the side near this wind inlet, can be added to the acting area in air port and be added to air quantity.
Then, see also Fig. 3, it shows second preferred embodiment of centrifugal fan of the present invention.Itself and above-mentioned first embodiment are roughly similar, but 34 in movable vane portion wherein has a vane group 342, a plurality of blade rings wherein are located at around the wheel hub 341 of this movable vane portion, and the extension part that the bottom of this wheel hub becomes radial level to extend, and this vane group 342 is near near inlet 351 places that also thereupon extend downward this gas collection runner 35 wind inlet of this second framework.In addition, this wall that extends downwards is made of twice wall 322,322 ', in order to separated set flow channel and movable vane portion.Make the air stream pressure process of this movable vane portion that flows through elongated by this gas collection runner 35, can avoid the variation rapidly of blast.
Now, see also Fig. 4, it shows the 3rd preferred embodiment of centrifugal fan of the present invention, itself and above-mentioned first embodiment are roughly similar, and it comprises two movable vane portions 44,44 ' up and down, has a vane group 442 of forming by a plurality of blade respectively, 442 ', the bottom of this time movable vane portion 44 ' is the radial level extension towards ingress 451 directions of this gas collection runner 45, and the vane group of this time movable vane portion also extends to the ingress 451 of this gas collection runner 45 thereupon.In addition, this embodiment comprises that also a plurality of stator blades 46 are arranged on this wall, with the air-flow correcting, more can effectively increase blast, and the vane group 442 ' of the vane group 442 of this last movable vane portion 44 and this time movable vane portion 44 ' is disposed at the both sides up and down of this stator blade 46 respectively.In when assembling, in regular turn this time movable vane portion 44 ' and this second framework 42 are combined on this first framework 41, at last, should go up movable vane portion 44 again by screwing togather, fasten, fuse or mode such as bonding being engaged in this time movable vane portion.
Except above-mentioned stator blade and movable vane configuration mode, this stator blade is also variable to be arranged on the wall near wind inlet, and movable vane portion is arranged under this stator blade, also promptly dispose stator blade and movable vane in regular turn along the direction from top to bottom of Fig. 4, and this movable vane portion and the number of stator blade portion and up and down configuration mode can do different selections and variation according to practical application.For example, if when conception of the present invention is applied to a reversely hung Yong centrifugal cutter or two-way wind input type blower, this stator blade also can be arranged at another wind inlet place of this first framework 41.
In addition, see also Fig. 5, it shows the 4th preferred embodiment of centrifugal fan of the present invention.It is a kind of blower of two-way wind input type, its structure roughly second embodiment with above-mentioned is similar, but the inlet 551 of this gas collection runner 55 is to be formed jointly from the upwardly extending wall 513 of the base of first framework 51 by the wall 522 and that the wind inlet inner edge of second framework 52 extends downwards, the wheel hub 541 that the vane group 542 of this movable vane portion 54 is located on this movable vane portion on every side and the intermediate portion of this vane group be the ingress 551 that extends horizontally to this gas collection runner 55.When extraneous air-flow after the two-way suction in wind inlet 521 places of the wind inlet 511 of first framework and second framework, the blade that air-flow can go out by horizontal-extending and be directed to the ingress 551 of this gas collection runner 55.In addition, at the wall of first framework 51 and accept between the receiver of this drive unit and also can set up a plurality of stator blades 56, be similar to the blade profile of this movable vane portion, in order to this air-flow correcting, and then increase blast.
At last, see also Fig. 6, be the airflow pressure characteristic comparison diagram of known blower shown in Figure 1 and centrifugal fan shown in Figure 3.Figure can prove obviously that the blast that centrifugal fan of the present invention produced is much larger than the blower of commonly using under identical air quantity thus.
Described above comprehensive, wall and flange thereof that the present invention utilizes the wind inlet inner edge to be extended, separated by spaces in the fan frame is gone out a gas collection runner or an air reservoir, make air stream elongated through the pressure process of fan blade, to avoid the variation rapidly of blast, and by the setting of stator blade, and then reach the effect of supercharging, significantly to promote radiating efficiency.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, under the situation that does not break away from spirit of the present invention, also can make the variation and the modification of various equivalences, therefore, as long as variation, the modification to the foregoing description all will drop in the scope of claims of the present invention in connotation scope of the present invention.
Claims (24)
1. centrifugal fan, it comprises:
One fan frame has an at least one wind inlet and an exhaust outlet; And
At least one movable vane portion is arranged in this fan frame, and it has at least one vane group, and wherein this at least one wind inlet inner edge has the wall that extends, and the space that this wall will be fanned in the frame forms a gas collection runner, in order to promote blast.
2. centrifugal fan as claimed in claim 1 is characterized in that this fan frame has one first framework and one second framework, and wherein this first framework has a base, and in order to accepting this movable vane portion, and this at least one wind inlet is formed on this second framework.
3. centrifugal fan as claimed in claim 2 is characterized in that also comprising a drive unit, is socketed on the receiver of this base, in order to rotate this movable vane portion.
4. centrifugal fan as claimed in claim 1 is characterized in that an end of this wall has a flange, to form the inlet of this gas collection runner.
5. centrifugal fan as claimed in claim 4, it is characterized in that this movable vane portion has one first vane group and one second vane group, wherein this first vane group is positioned near the wind inlet of this fan frame, and this second vane group is near the ingress of this gas collection runner and be horizontal radial and extend.
6. centrifugal fan as claimed in claim 1 is characterized in that this movable vane portion also comprises a wheel hub, and a plurality of blade rings of this vane group are located at around it, and an end of this wheel hub has an extension part, is horizontal radial towards the ingress of this gas collection runner and extends; The vane group of this at least one movable vane portion is horizontal radial with this extension part extends, and air-flow is guided in this gas collection runner.
7. centrifugal fan as claimed in claim 1 is characterized in that the base of this fan frame has the wall that extends, and the wall that is extended with this wind inlet forms the inlet of this gas collection runner jointly; Partly be horizontal radial in the middle of the vane group of this at least one movable vane portion and extend, air-flow is guided in this gas collection runner towards the Way in of this gas collection runner.
8. centrifugal fan as claimed in claim 1 is characterized in that this wall is to extend wall by twice to be constituted.
9. centrifugal fan as claimed in claim 1 is characterized in that also comprising that at least one stator blade portion is arranged at this wall or this at least one wind inlet place, in order to increase blast.
10. centrifugal fan as claimed in claim 9, it is characterized in that this at least one stator blade portion and should be at least one movable vane portion present interworking and put arrangement.
11. centrifugal fan as claimed in claim 9 is characterized in that the number of at least one movable vane of this at least one stator blade portion and this portion can be identical or inequality.
12. centrifugal fan as claimed in claim 9, it is characterized in that this movable vane portion axially on, the runner height of the height of this gas collection runner and this sound leaf partly or fully overlaps.
13. centrifugal fan as claimed in claim 1 is characterized in that the sectional area of this gas collection runner equates with the sectional area of this exhaust outlet.
14. centrifugal fan as claimed in claim 1 is characterized in that the vane group of this at least one movable vane portion has an inclined-plane respectively in the side near this wind inlet.
15. centrifugal fan as claimed in claim 1 is characterized in that this at least one movable vane portion comprises one first movable vane portion and one second movable vane portion, both are by screwing togather, fasten, fuse or the bonding mode being combined.
16. a centrifugal fan, it comprises:
One fan frame has at least one wind inlet, an exhaust outlet and at least one stator blade portion; And
At least one movable vane portion is arranged in this fan frame, and it has at least one movable vane portion, and this movable vane portion is made up of a plurality of blade.
17. centrifugal fan as claimed in claim 16 is characterized in that the blade shape of this at least one stator blade portion is similar to the blade profile of this movable vane portion.
18. centrifugal fan as claimed in claim 16, it is characterized in that this at least one stator blade portion and should be at least one movable vane portion present interworking and put arrangement.
19. centrifugal fan as claimed in claim 16 is characterized in that the number of at least one movable vane of this at least one stator blade portion and this portion can be identical or inequality.
20. centrifugal fan as claimed in claim 16 is characterized in that this wind inlet inner edge has the wall that extends, this wall makes the space in this fan frame form a gas collection runner: this at least one stator blade portion is arranged on this wall, in order to increase blast.
21. centrifugal fan as claimed in claim 20 is characterized in that an end of this wall has a flange, to form the inlet of this gas collection runner.
22. centrifugal fan as claimed in claim 20, it is characterized in that this movable vane portion has one first vane group and one second vane group, wherein this first vane group is positioned near the wind inlet of this fan frame, and this second vane group is near the ingress of this gas collection runner and be horizontal radial and extend.
23. centrifugal fan as claimed in claim 20 is characterized in that this movable vane portion also comprises a wheel hub, and a plurality of blade rings of this vane group are located at around it, an end of this wheel hub has an extension part, is horizontal radial towards the ingress of this gas collection runner and extends; The vane group of this at least one movable vane portion is horizontal radial with this extension part extends, and air-flow is guided in this gas collection runner.
24. centrifugal fan as claimed in claim 20 is characterized in that the base of this fan frame has the wall that extends, the wall that is extended with this wind inlet forms the inlet of this gas collection runner jointly; Partly be horizontal radial in the middle of the vane group of this at least one movable vane portion and extend, air-flow is guided in this gas collection runner towards the Way in of this gas collection runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310114224 CN1614241B (en) | 2003-11-07 | 2003-11-07 | Centrifugal fan and its frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310114224 CN1614241B (en) | 2003-11-07 | 2003-11-07 | Centrifugal fan and its frame structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1614241A true CN1614241A (en) | 2005-05-11 |
| CN1614241B CN1614241B (en) | 2012-12-19 |
Family
ID=34760158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310114224 Ceased CN1614241B (en) | 2003-11-07 | 2003-11-07 | Centrifugal fan and its frame structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1614241B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441877C (en) * | 2006-01-16 | 2008-12-10 | 台达电子工业股份有限公司 | Centrifugal fan, and fan frame |
| CN102287383A (en) * | 2011-08-01 | 2011-12-21 | 深圳雅图数字视频技术有限公司 | Turbo fan |
| CN102536860A (en) * | 2012-01-11 | 2012-07-04 | 苏州聚力电机有限公司 | Thin cross-flow fan with air outlet boosting effect |
| CN107299906A (en) * | 2016-04-15 | 2017-10-27 | 台达电子工业股份有限公司 | Impeller and its centrifugal fan being applicable |
| US10371161B2 (en) | 2016-04-15 | 2019-08-06 | Delta Electronics, Inc | Impeller and centrifugal fan with same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5489186A (en) * | 1991-08-30 | 1996-02-06 | Airflow Research And Manufacturing Corp. | Housing with recirculation control for use with banded axial-flow fans |
| DE19605742A1 (en) * | 1996-02-16 | 1997-08-21 | Vorwerk Co Interholding | Electric motor with impeller wheel |
| CN2408284Y (en) * | 1999-12-30 | 2000-11-29 | 建准电机工业股份有限公司 | Heat radiation fan casing base |
| JP4442029B2 (en) * | 2000-12-15 | 2010-03-31 | パナソニック株式会社 | Blower |
| CN1203257C (en) * | 2001-09-10 | 2005-05-25 | 台达电子工业股份有限公司 | Combined fan and fan frame structure |
-
2003
- 2003-11-07 CN CN 200310114224 patent/CN1614241B/en not_active Ceased
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441877C (en) * | 2006-01-16 | 2008-12-10 | 台达电子工业股份有限公司 | Centrifugal fan, and fan frame |
| CN102287383A (en) * | 2011-08-01 | 2011-12-21 | 深圳雅图数字视频技术有限公司 | Turbo fan |
| CN102287383B (en) * | 2011-08-01 | 2013-03-20 | 深圳雅图数字视频技术有限公司 | Turbo fan |
| CN102536860A (en) * | 2012-01-11 | 2012-07-04 | 苏州聚力电机有限公司 | Thin cross-flow fan with air outlet boosting effect |
| CN107299906A (en) * | 2016-04-15 | 2017-10-27 | 台达电子工业股份有限公司 | Impeller and its centrifugal fan being applicable |
| CN107299906B (en) * | 2016-04-15 | 2019-06-25 | 台达电子工业股份有限公司 | Impeller and its centrifugal fan being applicable in |
| US10371161B2 (en) | 2016-04-15 | 2019-08-06 | Delta Electronics, Inc | Impeller and centrifugal fan with same |
| DE102017107652B4 (en) * | 2016-04-15 | 2021-04-22 | Delta Electronics, Inc. | IMPELLER AND CENTRIFUGAL FAN WITH THIS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1614241B (en) | 2012-12-19 |
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