CN202284570U - Eccentric fan - Google Patents
Eccentric fan Download PDFInfo
- Publication number
- CN202284570U CN202284570U CN2011204004060U CN201120400406U CN202284570U CN 202284570 U CN202284570 U CN 202284570U CN 2011204004060 U CN2011204004060 U CN 2011204004060U CN 201120400406 U CN201120400406 U CN 201120400406U CN 202284570 U CN202284570 U CN 202284570U
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- Prior art keywords
- annulus
- centrifugal fan
- wind inlet
- vane module
- diameter
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Abstract
The utility model discloses an eccentric fan, which comprises a fan blade module, a casing and a motor. The fan blade module is provided with a ring and a plurality of blades, wherein the ring is fixed on the fan blade. The casing is provided with an air inlet and an air outlet, wherein the inner diameter of the air inlet is larger than the diameter of the ring, and the upper surface of the ring is on the same plane as the upper surface of the casing edge of the air inlet. The motor is arranged in the casing to be used for driving the fan blade module to rotate.
Description
Technical field
The utility model relates to a kind of fan assembly, and particularly relates to a kind of centrifugal fan device.
Background technique
At present the appearance design trend of portable computer is exactly frivolous, has therefore also compressed the volume of various spare parts and the design of heat radiation in the computer.The preferable portable computer of usefulness generally all also needs active sink (for example fan) to cooperate passive type device (for example radiating fin and heat pipe), the heat that is produced when just being enough to remove its internal electronic element running at present.
The active sink that uses in the portable computer at present generally with centrifugal fan for the most large.Frivolous more when portable computer design, it is thin more that centrifugal fan also designs, and the flabellum in the blower-casting causes its work area minimizing because of the thickness attenuation.For keeping the usefulness of centrifugal fan, can only accelerate the rotating speed of fan usually, but the centrifugal fan after revving up can produce bigger noise.
Because the problem of above-mentioned portable computer has further improvement to centrifugal fan.
The model utility content
One purpose of the utility model is to provide a kind of centrifugal fan of improvement, to address the above problem.
According to the purpose of above-mentioned model utility, a kind of centrifugal fan is proposed, it comprises a vane module, a housing and a motor.Vane module has an annulus and a plurality of blade, and annulus is fixed on those flabellums.Housing has a wind inlet and an exhaust outlet, and the internal diameter of wind inlet is greater than the diameter of annulus, and the upper surface of annulus roughly is positioned at same plane with the shell edge upper surface of wind inlet.Motor is positioned at housing, in order to drive the vane module rotation.
According to another embodiment of the utility model, wind inlet is positioned at the axial of vane module.
According to another embodiment of the utility model, exhaust outlet is positioned at vane module radially.
According to another embodiment of the utility model, vane module more comprises a center hub, and it is connected to motor.
According to another embodiment of the utility model, the outermost end of those flabellums than annulus away from center hub.
According to another embodiment of the utility model, the outermost end of those flabellums trims the outer rim of annulus.
According to the purpose of above-mentioned model utility, a kind of centrifugal fan is proposed, it comprises a vane module, a housing and a motor.Vane module has annulus on, once annulus and a plurality of flabellum, last annulus and down annulus be individually fixed in the two opposite sides of those flabellums.Housing has wind inlet on, following wind inlet and an exhaust outlet; The internal diameter of last wind inlet is greater than the diameter of last annulus; The internal diameter of following wind inlet is greater than the diameter of following annulus; The upper surface of last annulus roughly is positioned at same plane with the shell edge upper surface of last wind inlet, and the lower surface of following annulus roughly is positioned at same plane with the shell edge lower surface of following wind inlet.Motor is positioned at housing, in order to drive the vane module rotation.
According to another embodiment of the utility model, wind inlet all was positioned at the axial of vane module under last wind inlet reached.
According to another embodiment of the utility model, exhaust outlet is positioned at vane module radially.
According to another embodiment of the utility model, vane module more comprises a center hub, is connected to motor.
According to another embodiment of the utility model, the outermost end of those flabellums should go up annulus away from center hub.
According to another embodiment of the utility model, the outermost end of those flabellums trims down the outer rim of annulus.
According to another embodiment of the utility model, last annulus is unequal with the diameter of following annulus.
The advantage of the utility model is, the design that its vane module has an annulus has effectively increased the thickness of blade, makes the work area of blade increase; Therefore; After the centrifugal fan slimming, vane module capable of using increases the design of annulus, makes the centrifugal fan of slimming still have identical blade working area; Also need not to promote the usefulness of centrifugal fan, and then avoid producing the problem of excessive noise by the mode that increases rotating speed.
Description of drawings
For letting the above-mentioned of the utility model and other purposes, characteristic, advantage and the embodiment can be more obviously understandable, the explanation of appended accompanying drawing be following:
Fig. 1 is the exploded view of a kind of centrifugal fan of the utility model one embodiment;
Fig. 2 is the stereogram after the centrifugal fan of Fig. 1 makes up;
Fig. 3 is the upper viewing view of a kind of centrifugal fan of the utility model one embodiment;
Fig. 4 is the centrifugal fan sectional view along the hatching 4-4 ' of Fig. 3;
Fig. 5 is the exploded view of a kind of centrifugal fan of another embodiment of the utility model;
Fig. 6 is the stereogram after the centrifugal fan of Fig. 5 makes up;
Fig. 7 is the upper viewing view of a kind of centrifugal fan of another embodiment of the utility model;
Fig. 8 is the centrifugal fan sectional view along the hatching 8-8 ' of Fig. 7.
The primary component symbol description
100 centrifugal fans
101 housings
102 lower shell bodys
The 102a substrate
The 102b wind inlet
103 upper shells
The 103a wind inlet
105 vane module
The 105a blade
The 105b annulus
The 105c center hub
The 105d link
106 motors
108 exhaust outlets
200 centrifugal fans
201 housings
202 lower shell bodys
The 202a substrate
Wind inlet under the 202b
203 upper shells
The last wind inlet of 203a
205 vane module
The 205a blade
The last annulus of 205b
Annulus under the 205c
The 205d link
The 205e center hub
206 motors
208 exhaust outlets
d
1Thickness
d
2Thickness
d
3Thickness
d
4Thickness
R
1Internal diameter
R
2Diameter
R
3Internal diameter
R
4Diameter
Embodiment
Please be simultaneously with reference to Fig. 1, Fig. 2, Fig. 1 illustrates the exploded view according to a kind of centrifugal fan of the utility model one embodiment, and Fig. 2 is the stereogram that illustrates after the centrifugal fan combination of Fig. 1.Centrifugal fan 100 comprises a housing 101, a vane module 105 and a motor 106.In the present embodiment, housing 101 is organized to stand by upper shell 103 and lower shell body 102 and is constituted.Upper shell 103 has a wind inlet 103a, and it is positioned at the axial of vane module 105.Lower shell body 102 also can have wind inlet 102b, and it is positioned at the axial of vane module 105.Housing 101 after group is upright has an exhaust outlet 108 and is positioned at vane module 105 radially.
Vane module 105 comprises a center hub 105c, an annulus 105b and a plurality of blade 105a.Annulus 105b is connected with center hub 105c by a plurality of link 105d.Those blades 105a is fixed in annulus 105b.In the present embodiment, those blades 105a only is fixed on the annulus 105b, but is not connected directly to center hub 105c.(be not illustrated in drawing) in other embodiments, those blades 105a also can be connected directly to center hub 105c, and has the side that annulus 105b is fixed in those blades 105a.
That pays special attention to is the internal diameter R of wind inlet 103a
1Need be slightly larger than the diameter R of annulus 105b
2After centrifugal fan 100 combinations, annulus 105b is positioned at wind inlet 103a.When vane module 105 rotations, annulus 105b rotates with those blades 105a synchronously, and air-flow is sucked in the housing from the zone between annulus 105b and the center hub 105c.The shell edge of annulus 105b and wind inlet 103a should keep an appropriate gap, when making annulus 105b rotation, can not produce with the shell edge of wind inlet 103a and interfere.In addition, the gap of the shell edge of annulus 105b and wind inlet 103a should be not excessive yet, to avoid becoming the inlet air district of air-flow.
The substrate 102a that motor 106 is fixed in lower shell body 102 goes up and is connected to center hub 105c; And be positioned at housing 101; Be used to drive vane module 105 rotations, make air-flow get into, and blow out (with reference to the direction of arrow of Fig. 2) through exhaust outlet 108 by wind inlet (103a, 102b).
Please be simultaneously with reference to Fig. 3, Fig. 4, Fig. 3 is the upper viewing view that illustrates according to a kind of centrifugal fan of the utility model one embodiment, Fig. 4 is the centrifugal fan sectional view that illustrates along the hatching 4-4 ' of Fig. 3.The function of the annulus 105b of vane module 105 is to increase the thickness of blade 105a.Because annulus 105b conduct " false shell wall " that vane module is many, its blade 105a does not just need preset clearance to prevent interference, and the thickness of blade can be increased.With regard to single blade 105a, the thickness with annulus 105b part is d
1, be d and do not have the thickness of annulus 105b part
2, thickness is d
1Greater than thickness is d
2, thereby blade, the work area that has just increased with annulus 105b part.In the present embodiment, away from center hub 105c, in other words, the outermost end of blade 105a protrudes from outside the annulus 105b outermost end of blade 105a than annulus 105b.In other embodiments, the outermost end of blade 105a also can trim the outer rim (not being illustrated in drawing) of annulus 105b.In addition, the upper surface of annulus 105b should be roughly be positioned at same plane with the shell edge upper surface of wind inlet 103c.
Please be simultaneously with reference to Fig. 5, Fig. 6, Fig. 5 is the exploded view that illustrates according to a kind of centrifugal fan of another embodiment of the utility model, Fig. 6 is the stereogram that illustrates after the centrifugal fan combination of Fig. 5.The difference of centrifugal fan 200 and centrifugal fan 100 is the quantity of annulus, and the vane module 205 of centrifugal fan 200 has two toroidal design.Centrifugal fan 200 comprises a housing 201, a vane module 205 and a motor 206.In the present embodiment, housing 201 is organized upright by upper shell 203 and lower shell body 202 and is constituted.Upper shell 203 has wind inlet 203a on, and it is positioned at the axial of vane module 205.Lower shell body 202 also can have following wind inlet 202b, and it is positioned at the axial of vane module 205.Housing 201 after group is upright has an exhaust outlet 208 and is positioned at vane module 205 radially.
That pays special attention to is the internal diameter R of last wind inlet 203a
1Need be slightly larger than the diameter R of annulus 205b
2, and the internal diameter R of wind inlet 202b
3Need be slightly larger than down the diameter R of annulus 205c
4, and diameter R
4Greater than diameter R
2After centrifugal fan 200 combinations; Last annulus 205b is positioned at wind inlet 203a and following annulus 205c is positioned at wind inlet 202b down; During vane module 205 rotations, last annulus 205b and following annulus 205c rotate with those blades 205a synchronously, make air-flow from sucking in the housing.The shell edge of upper and lower annulus and upper and lower wind inlet should keep a gap, when making the annulus rotation, can not produce with the shell edge of wind inlet and interfere.In addition, the gap of the shell edge of annulus and wind inlet should be not excessive yet, to avoid becoming the inlet air district of air-flow.
The substrate 202a that motor 206 is fixed in lower shell body 202 goes up and is connected to center hub 205e; And be positioned at housing 201; Be used to drive vane module 205 rotations, make air-flow get into, blow out (with reference to the direction of arrow of Fig. 6) through exhaust outlet 208 by upper and lower wind inlet (203a, 202b).
Please be simultaneously with reference to Fig. 7, Fig. 8, Fig. 7 is the upper viewing view that illustrates according to a kind of centrifugal fan of another embodiment of the utility model, Fig. 8 is the centrifugal fan sectional view that illustrates along the hatching 8-8 ' of Fig. 7.The function of the upper and lower annulus of vane module 205 (205b, 205c) is to increase the thickness of blade 205a.Because annulus conduct " false shell wall " that vane module is many, its blade 205a does not just need preset clearance to prevent interference, and the thickness of blade can be increased.With regard to single blade 205a, having up and down, the thickness of annulus (205b, 205c) lap is d
4, be d and only have following annulus 205c thickness partly
3, thickness d
3Greater than thickness d
4, thereby have the up and down blade of annulus (205b, 205c) lap, the work area that has just increased.In the present embodiment, the last annulus 205b of the outermost end of blade 205a trims down the outer rim of annulus 205c away from the outermost end of center hub 205e and blade 205a.In addition, the upper surface of last annulus 205b should be roughly be positioned at same plane with the shell edge upper surface of last wind inlet 203c, and the lower surface of annulus 205c should roughly be positioned at same plane with following wind inlet 202b shell edge lower surface down.
Can be known by above-mentioned the utility model mode of execution, use the centrifugal fan of the utility model, the design that its vane module has an annulus has effectively increased the thickness of blade, makes the work area of blade increase.Therefore; After the centrifugal fan slimming, vane module capable of using increases the design of annulus, makes the centrifugal fan of slimming still have identical blade working area; Also need not to promote the usefulness of centrifugal fan, and then avoid producing the problem of excessive noise by the mode that increases rotating speed.
Claims (13)
1. a centrifugal fan is characterized in that, this centrifugal fan comprises at least:
Vane module has annulus and a plurality of blade, and this annulus is fixed on those flabellums;
Housing has wind inlet and exhaust outlet, and the internal diameter of this wind inlet is greater than the diameter of this annulus, and the upper surface of this annulus roughly is positioned at same plane with the shell edge upper surface of this wind inlet; And
Motor is positioned at this housing, in order to drive this vane module rotation.
2. centrifugal fan as claimed in claim 1 is characterized in that, this wind inlet is positioned at the axial of this vane module.
3. centrifugal fan as claimed in claim 1 is characterized in that this exhaust outlet is positioned at this vane module radially.
4. centrifugal fan as claimed in claim 1 is characterized in that this vane module also comprises center hub, is connected to this motor.
5. centrifugal fan as claimed in claim 4 is characterized in that, the outermost end of those flabellums than this annulus away from this center hub.
6. centrifugal fan as claimed in claim 1 is characterized in that, the outermost end of those flabellums trims the outer rim of this annulus.
7. a centrifugal fan is characterized in that, this centrifugal fan comprises at least:
Vane module has last annulus, following annulus and a plurality of flabellum, and annulus and this time annulus are individually fixed in the two opposite sides of those flabellums on this;
Housing; Have last wind inlet, following wind inlet and exhaust outlet; Should go up the diameter of the internal diameter of wind inlet greater than annulus on this; The internal diameter of this time wind inlet is greater than the diameter of this time annulus, on this upper surface of annulus roughly with this on the shell edge upper surface of wind inlet be positioned at same plane, the lower surface of this time annulus roughly is positioned at same plane with the shell edge lower surface of this time wind inlet; And
Motor is positioned at this housing, in order to drive this vane module rotation.
8. centrifugal fan as claimed in claim 7 is characterized in that, wind inlet all was positioned at the axial of this vane module under wind inlet reached on this.
9. centrifugal fan as claimed in claim 7 is characterized in that this exhaust outlet is positioned at this vane module radially.
10. centrifugal fan as claimed in claim 7 is characterized in that this vane module also comprises center hub, is connected to this motor.
11. centrifugal fan as claimed in claim 10 is characterized in that, the outermost end of those flabellums should go up annulus away from this center hub.
12. centrifugal fan as claimed in claim 11 is characterized in that, the outermost end of those flabellums trims the outer rim of this time annulus.
13. centrifugal fan as claimed in claim 7 is characterized in that, diameter of annulus and this time annulus is unequal on this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204004060U CN202284570U (en) | 2011-10-20 | 2011-10-20 | Eccentric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204004060U CN202284570U (en) | 2011-10-20 | 2011-10-20 | Eccentric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202284570U true CN202284570U (en) | 2012-06-27 |
Family
ID=46296094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204004060U Expired - Fee Related CN202284570U (en) | 2011-10-20 | 2011-10-20 | Eccentric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202284570U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082240A1 (en) * | 2012-11-28 | 2014-06-05 | Li Qiwu | Fan |
| CN110056514A (en) * | 2018-01-19 | 2019-07-26 | 日本电产株式会社 | Centrifugal fan and cooling device comprising the centrifugal fan |
| CN114483652A (en) * | 2020-10-26 | 2022-05-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Volute, fan and range hood |
-
2011
- 2011-10-20 CN CN2011204004060U patent/CN202284570U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014082240A1 (en) * | 2012-11-28 | 2014-06-05 | Li Qiwu | Fan |
| CN110056514A (en) * | 2018-01-19 | 2019-07-26 | 日本电产株式会社 | Centrifugal fan and cooling device comprising the centrifugal fan |
| CN110056514B (en) * | 2018-01-19 | 2020-10-13 | 日本电产株式会社 | Centrifugal fan and cooling device comprising same |
| CN114483652A (en) * | 2020-10-26 | 2022-05-13 | 佛山市顺德区美的洗涤电器制造有限公司 | Volute, fan and range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20191020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |