CN102478020A - Centrifugal fan and fan blade thereof - Google Patents
Centrifugal fan and fan blade thereof Download PDFInfo
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- CN102478020A CN102478020A CN2010105635879A CN201010563587A CN102478020A CN 102478020 A CN102478020 A CN 102478020A CN 2010105635879 A CN2010105635879 A CN 2010105635879A CN 201010563587 A CN201010563587 A CN 201010563587A CN 102478020 A CN102478020 A CN 102478020A
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Abstract
The invention discloses a fan blade of a centrifugal fan. The fan blade comprises a hub and multiple blades, wherein the hub is provided with a center point, the multiple blades are connected to the hub, and the most outer edges of the blades can approximately define a circle taking the center point as the centre; and each blade is provided with at least one groove, each groove is more than 0.5mm in depth and is provided with an obtuse angle less than 170 degrees, and the obtuse angle is an included angle of the inner side edge of each groove and the outer edge of each blade.
Description
Technical field
The present invention relates to a kind of fan assembly, and particularly relate to a kind of centrifugal fan.
Background technique
Centrifugal cutter is different from the axial fan part and is, centrifugal cutter is by the axial admission of flabellum, but radially giving vent to anger by flabellum.Please with reference to Fig. 1, it illustrates a kind of top view of flabellum of existing centrifugal fan.The flabellum 100 of centrifugal fan comprises wheel hub 101 and a plurality of blades 102.Blade 102 is along wheel hub 101 radial arrangements on every side.
In order to increase centrifugal cutter performance (for example increasing air quantity), a kind of mode wherein is exactly the quantity that increases blade 102.When blade quantity is increased to when too many, can cause the density at internal diameter blade place to increase.With Fig. 1 is example, when 23 blades 102 are connected to wheel hub 101, just causes near the increase of wheel hub 101 blade 102 density.Too high because of blade density, can cause air flow spaces to reduce, therefore cause the centrifugal cutter air output also can reduce.
Please with reference to Fig. 2, it illustrates the sectional view of existing a kind of centrifugal fan.Improve one of existing method of the problems referred to above; Reduce the axial height (for example between the upper and lower beveled edge 102a of blade among the figure, 102b near the distance of root of blade) of high blade density exactly; Minimizing is along the resistance of blade 102 axial (like the direction of arrow among the figure) air inlet; Let air be easy to flow to blade, and then increase along blade 102 giving vent to anger radially.
Yet, when reducing blade 102 axial heights, reduce the work area of blade 102 also, the air output of centrifugal fan is descended.How to reduce the resistance of centrifugal fan air intake, increase the blade working area again, fan duty is further improved, faced a difficult choice for what meet with in the design.
Summary of the invention
Therefore, a purpose of the present invention is to provide a kind of centrifugal fan of improvement, is used to solve the mentioned problem of above-mentioned background technology.
According to above-mentioned the object of the invention, the present invention proposes a kind of flabellum of centrifugal fan, and it comprises a wheel hub and a plurality of blade.Wheel hub has a central point.A plurality of blades are connected to wheel hub, and the outer most edge of those blades roughly to define with the central point be a circle in the center of circle.Circle has a radius R, and each blade has at least one groove.Groove comprises one greater than 0.5 millimeter the degree of depth and an obtuse angle less than 170 degree, and this obtuse angle is the angle of the outer rim of groove inner side edge and blade.
According to one embodiment of the invention, groove is positioned at each blade is lighted calculation from the center 0.6R scope.
According to another embodiment of the present invention, groove is positioned at each blade is lighted calculation from the center 0.6R scope, and the quantity of groove has two at least, and groove is positioned at two relative outer rims of each blade.
According to another embodiment of the present invention, groove is lighted scope between the 0.6R to 0.9R of calculation from the center at each blade.
According to another embodiment of the present invention, groove is lighted scope between the 0.6R to 0.9R of calculation from the center at each blade, and the quantity of groove has two at least, and groove is positioned at two relative outer rims of each this blade.
According to above-mentioned the object of the invention, the present invention also proposes a kind of flabellum of centrifugal fan, and it comprises a wheel hub, a connecting ring and a plurality of blade.Wheel hub has a central point.Connecting ring be located at wheel hub around.A plurality of blades are connected to connecting ring, and the outer most edge of those blades roughly to define with this central point be a circle in the center of circle, circle has a radius R.Define at least one first groove between each blade and the wheel hub.First groove comprise one greater than 0.5 millimeter the degree of depth and less than 170 degree, the angle of the outer rim of this obtuse angle groove inner side edge and blade.
According to one embodiment of the invention, the inner edge of connecting ring and the outer rim of wheel hub are seamless connectivities.
According to another embodiment of the present invention, the inner edge of connecting ring is gapped the connection with the outer rim of wheel hub.
According to another embodiment of the present invention, first groove is positioned at each blade is lighted calculation from the center 0.6R scope.
According to another embodiment of the present invention, the quantity of first groove has two at least, and first groove is positioned at the two opposite sides of connecting ring.
According to another embodiment of the present invention, each blade also comprises at least one second groove scope between the 0.6R to 0.9R that starts at from this central point.
According to another embodiment of the present invention, the quantity of second groove has two at least, and second groove is positioned at two relative outer rims of each blade.
According to above-mentioned the object of the invention, the present invention also proposes a kind of centrifugal fan, and it comprises a flabellum, a motor and a housing.Motor is connected in wheel hub and drives flabellum and rotates.Housing coats flabellum and motor, housing have at least one wind inlet be positioned at flabellum axially, and have at least one wind inlet and be positioned at flabellum radially.Flabellum comprises a wheel hub and a plurality of blade.Wheel hub has a central point.A plurality of blades are connected to wheel hub, and the outer most edge of those blades roughly to define with the central point be a circle in the center of circle.Circle has a radius R, and each blade has at least one groove.Groove comprises one greater than 0.5 millimeter the degree of depth and an obtuse angle less than 170 degree, and this obtuse angle is the angle of the outer rim of groove inner side edge and blade.
According to one embodiment of the invention, groove is positioned at each blade is lighted calculation from the center 0.6R scope.
According to one embodiment of the invention, groove is lighted scope between the 0.6R to 0.9R of calculation from the center at each blade.
The object of the invention according to above-mentioned proposes a kind of centrifugal fan, and it comprises a flabellum, a motor and a housing.Motor is connected in wheel hub and drives flabellum and rotates.Housing coats flabellum and motor, housing have at least one wind inlet be positioned at flabellum axially, and have at least one wind inlet and be positioned at flabellum radially.Flabellum comprises a wheel hub, a connecting ring and a plurality of blade.Wheel hub has a central point.Connecting ring be located at wheel hub around.A plurality of blades are connected to connecting ring, and the outer most edge of those blades roughly to define with this central point be a circle in the center of circle.Define at least one first groove between each blade and the wheel hub.First groove comprise one greater than 0.5 millimeter the degree of depth and less than 170 degree, the angle of the outer rim of this obtuse angle groove inner side edge and blade.
According to one embodiment of the invention, the inner edge of connecting ring and the outer rim of wheel hub are seamless connectivities, and first groove is positioned at each blade is lighted calculation from the center 0.6R scope.
According to another embodiment of the present invention, the inner edge of connecting ring and the outer rim of wheel hub are seamless connectivities, and each blade also comprises at least one second groove, scope between the 0.6R to 0.9R that starts at from this central point.
According to another embodiment of the present invention, the inner edge of connecting ring is gapped the connection with the outer rim of wheel hub, and first groove is positioned at each blade is lighted calculation from the center 0.6R scope.
According to another embodiment of the present invention, the inner edge of connecting ring is gapped the connection with the outer rim of wheel hub, and each blade also comprises at least one second groove, scope between the 0.6R to 0.9R that lights calculation from the center.
From the above, use the groove design of centrifugal fan of the present invention and flabellum thereof, can effectively promote the usefulness of centrifugal fan, remove from reducing and cut down bigger blade working area, centrifugal fan usefulness can't effectively be promoted.
Description of drawings
For letting above and other objects of the present invention, characteristic, advantage and the embodiment can be more obviously understandable, the explanation of appended accompanying drawing be following:
Fig. 1 is the top view of the flabellum of existing a kind of centrifugal fan;
Fig. 2 is the sectional view of existing a kind of centrifugal fan;
Fig. 3 is the exploded view of a kind of centrifugal fan of the first embodiment of the present invention;
Fig. 4 is the sectional view of a kind of centrifugal fan of the second embodiment of the present invention;
Fig. 5 is the sectional view of a kind of centrifugal fan of the third embodiment of the present invention;
Fig. 6 is the sectional view of a kind of centrifugal fan of the fourth embodiment of the present invention;
Fig. 7 is the sectional view of a kind of centrifugal fan of the fifth embodiment of the present invention;
Fig. 8 is the sectional view of a kind of centrifugal fan of the sixth embodiment of the present invention;
Fig. 9 is the sectional view of a kind of centrifugal fan of the seventh embodiment of the present invention;
Figure 10 is the top view of a kind of centrifugal fan of the eighth embodiment of the present invention;
Figure 11 is the sectional view along the hatching 11-11 ' of Figure 10;
Figure 12 is the top view of a kind of centrifugal fan of nineth embodiment of the invention; And
Figure 13 is the top view along the hatching 13-13 ' of Figure 12.
The primary clustering symbol description
100 flabellums, 203 grooves
101 wheel hub 203a grooves
102 blade 203b grooves
102a beveled edge 203c groove
102b beveled edge 203d groove
110 housing 203g grooves
200 centrifugal fan 203g ' grooves
202 flabellum 203h grooves
202 ' flabellum 203i groove
202 " flabellum 205 motors
202c central point 205a rotating shaft
202a wheel hub 210a upper shell
202c central point 210c wind inlet
202d connecting ring 210d wind inlet
202e rib 210e rib
C
1Degree of depth 210g exhaust outlet
C
2The degree of depth
D
1Distance
D
2Distance
A
1～A
7Angle
Embodiment
As stated, the present invention provides a dynamical centrifugal fan, through on the blade of fan, designing groove, and then increases the efficient of centrifugal fan air inlet.Below by embodiment's details of description of drawings this case.
Please with reference to Fig. 3, it illustrates the exploded view of a kind of centrifugal fan of first embodiment of the invention.Centrifugal fan 200 comprises upper shell 210a, lower shell body 210b, flabellum 202 and a motor 205.After upper shell 210a and lower shell body 210b combination, flabellum 202 and motor 205 can be coated on the housing interior (combination of upper shell 210a and lower shell body 210b) of combination.The bottom surface of motor 205 is fixed on the base plate 210f of lower shell body 210b.The rotating shaft 205a of motor 205 is connected to the wheel hub 202a of flabellum 202, is used to drive flabellum 202 rotations.Upper shell 210a has a wind inlet 210c, and lower shell body 210b has a plurality of wind inlet 210d, wind inlet 210c, 210d all be positioned at flabellum 202 axially.Wind inlet 210d is between many rib 210e, and rib 210e is in order to connect base plate 210f and lower shell body 210b.When flabellum 202 rotates, drive air-flow and flow into, and flow out by exhaust outlet 210g by wind inlet 210c, 210d.Exhaust outlet 210g is positioned at flabellum 202 radially.Flabellum 202 comprises wheel hub 202a and a plurality of blade 202b.Blade 202b is connected on the wheel hub 202a, and each blade 202b has at least one groove 203, is used to increase the intake efficiency of air-flow.
In other embodiment, wind inlet only designs on upper shell 210a or lower shell body 210b, and in other words, centrifugal fan 200 can only be from a wherein side air inlet of flabellum 202.
Please with reference to Fig. 4, it illustrates the sectional view of a kind of centrifugal fan of second embodiment of the invention.Centrifugal fan comprises a housing 210, motor 205, wheel hub 202a and a plurality of blade 202b.It is a circle (asking a plurality of blade 202bs of while with reference to Fig. 3) in the center of circle that a plurality of blade 202b outer most edge roughly define with central point 202c, and circle has a radius R.Each blade 202b has a groove 203a, and it is positioned at the distance B that each blade 202b starts at from central point 202c
1In the scope.Experimental result, distance B
1Approximately be 0.6R, groove 203a can more effectively promote the usefulness of centrifugal fan.In addition, the degree of depth C of groove 203a
1Also must be greater than 0.5 millimeter, and the included angle A of the outer rim of groove 203a inner side edge and blade 202b
1Must be the obtuse angle less than 170 degree, the usefulness of centrifugal fan just can promote, otherwise the groove of blade only can reduce work area, lowers the usefulness of centrifugal fan on the contrary.
Please with reference to Fig. 5, it illustrates the sectional view of a kind of centrifugal fan of third embodiment of the invention.This embodiment and second embodiment's difference is the position of groove.In the 3rd embodiment, groove 203b is apart from wheel hub 202a (comparing with groove 203a) far away.Groove 203b is positioned at the distance B that each blade 202b starts at from central point 202c
2In the scope.Experimental result, distance B
2Approximately be 0.9R, groove 203b can more effectively promote the usefulness of centrifugal fan.In addition, the degree of depth C of groove 203b
2Also must be greater than 0.5 millimeter, and the included angle A of the outer rim of groove 203b inner side edge and blade 202b
2, A
3Must be the obtuse angle less than 170 degree, the usefulness of centrifugal fan just can promote, otherwise the groove of blade only can reduce work area, lowers the usefulness of centrifugal fan on the contrary.
Please with reference to Fig. 6, it illustrates the sectional view of a kind of centrifugal fan of fourth embodiment of the invention.This embodiment and second and third embodiment's difference is that each blade has two grooves.When each blade 202b had groove 203a, 203b, groove 203a was positioned at the distance B that each blade 202b starts at from central point 202c
1In the scope, and groove 203b is positioned at the distance B that each blade 202b starts at from central point 202c
1To distance B
2Between scope in, groove 203a, 203b can more effectively promote the usefulness of centrifugal fan.
Please with reference to Fig. 7, it illustrates the sectional view of a kind of centrifugal fan of the fifth embodiment of the present invention.This embodiment and the 4th embodiment's difference is, the distance B that each blade 202b starts at from central point 202c
1To distance B
2Between scope in have two grooves.Groove 203c, 203d are positioned at the distance B that each blade 202b starts at from central point 202c
1To distance B
2Between scope in, and to have and above-mentioned groove identical characteristics (for example " degree of depth is greater than 0.5 millimeter " and " angle of the outer rim of groove inner side edge and blade be less than 170 the degree the obtuse angle ").
Please with reference to Fig. 8, it illustrates the sectional view of a kind of centrifugal fan of sixth embodiment of the invention.This embodiment and the 5th embodiment's difference is, the distance B that each blade 202b starts at from central point 202c
1To distance B
2Between scope in have than wide groove.The width of groove 203i is slightly less than distance B
1To distance B
2Between scope.The degree of depth of groove 203i still need be greater than 0.5 millimeter, and the included angle A of the outer rim of groove 203i inner side edge and blade 202b
4, A
5Must be obtuse angle less than 170 degree.
Please with reference to Fig. 9, it illustrates the sectional view of a kind of centrifugal fan of seventh embodiment of the invention.This embodiment and the 6th embodiment's difference is that the two relative outer rims of each blade 202b all have groove.In the 7th embodiment, each blade 202b has groove 203a, 203b is positioned at the upper limb of blade, and has the lower edge that groove 203e, 203f are positioned at blade.Groove 203a, 203e can be positioned at the distance B that each blade 202b starts at from central point 202c
1In the scope.Groove 203b, 203f are positioned at the distance B of starting at from central point 202c from each blade 202b
1To distance B
2Between scope in.In another embodiment, each blade 202b also can only have the upper limb that groove 203a is positioned at blade, and has the lower edge that groove 203e is positioned at blade, and groove 203a, 203e all are positioned at the distance B that each blade 202b starts at from central point 202c
1In the scope.In another embodiment, each blade 202b also can only have the upper limb that groove 203b is positioned at blade, and has the lower edge that groove 203f is positioned at blade, and groove 203b, 203f all are positioned at the distance B of starting at from central point 202c from each blade 202b
1To distance B
2Between scope in.
Please with reference to Figure 10, its illustrate eighth embodiment of the invention a kind of centrifugal fan top view.Figure 11 is the sectional view that illustrates along the hatching 11-11 ' of Figure 10.This embodiment is the different of blade structure with the main difference of the foregoing description.In the 8th embodiment, flabellum 202 ' comprises a wheel hub 202a, a plurality of blade 202b and a connecting ring 202d.Connecting ring 202d be arranged at wheel hub 202a around, supply the usefulness of a plurality of blade 202b connection.Connecting ring 202d can discongest the wheel hub 202a too high problem of blade density on every side, makes the efficient of air inlet better.Define at least one groove between each blade 202b and the wheel hub 202a.Groove can only be formed at the upside (for example groove 203g) of connecting ring 202d; Groove can only be formed at the downside (for example groove 203g ') of connecting ring 202d; Or groove is formed at the relative upper and lower side of connecting ring 202d two simultaneously.Groove 203g, 203g ' all are positioned at the distance B that each blade 202b starts at from central point 202c
1In the scope.The degree of depth of groove 203g, 203g ' still need be greater than 0.5 millimeter, and the angle of the outer rim of groove 203g, 203g ' inner side edge and blade 202b (A for example
6) must be obtuse angle less than 170 degree.
In other was implemented, the second～seven embodiment's groove 203a, 203b, 203c, 203d, 203e, 203f or 203i also can design on the 8th embodiment's flabellum 202b.
Please with reference to Figure 12, it illustrates the top view of a kind of centrifugal fan of nineth embodiment of the invention.Figure 13 is the sectional view that illustrates along the hatching 13-13 ' of Figure 12.This embodiment and the 8th embodiment's main difference are the different of Placement between connecting ring and the wheel hub.In the 8th embodiment, the outer rim of the inner edge of connecting ring 202d and wheel hub 202a is a seamless connectivity.In the 9th embodiment, the inner edge of connecting ring 202d is gapped the connection with the outer rim of wheel hub 202a, and a plurality of rib 202e of connecting ring 202d mat are connected to wheel hub 202a.Flabellum 202 " comprise a wheel hub 202a, a plurality of blade 202b, rib 202e and a connecting ring 202d.Connecting ring 202d be arranged at wheel hub 202a around, supply the usefulness of a plurality of blade 202b connection.Connecting ring 202d can alleviate the wheel hub 202a too high problem of blade density on every side, makes the efficient of air inlet better.Define a groove 203h between each blade 202b and the wheel hub 202a.Groove 203h is positioned at the distance B that each blade 202b starts at from central point 202c
1In the scope.The included angle A 7 of the outer rim of groove 203h inner side edge and blade 202b must be the obtuse angle less than 170 degree.
In other was implemented, the second～seven embodiment's groove 203a, 203b, 203c, 203d, 203e, 203f or 203i also can design on the 9th embodiment's flabellum 202b.
Can know by the invention described above mode of execution, use the groove design of centrifugal fan of the present invention and flabellum thereof, fan duty is further improved, remove from reducing and cut down bigger blade working area, centrifugal fan usefulness can't effectively be promoted.
Though disclosed the present invention in conjunction with above mode of execution; Yet it is not in order to limit the present invention; Anyly be familiar with this operator; Do not breaking away from the spirit and scope of the present invention, can do various changes and retouching, thus protection scope of the present invention should with enclose claim was defined is as the criterion.
Claims (23)
1. the flabellum of a centrifugal fan comprises at least:
Wheel hub has a central point; And
A plurality of blades are connected to this wheel hub, and the outer most edge of those blades roughly to define with this central point be a circle in the center of circle, this circle has a radius R, each this blade has at least one groove, this groove comprises at least:
One greater than 0.5 millimeter the degree of depth; And
One obtuse angle less than 170 degree is the angle of the outer rim of this groove inner side edge and this blade.
2. flabellum as claimed in claim 1, wherein this groove is positioned at the 0.6R scope that each this blade is started at from this central point.
3. flabellum as claimed in claim 1, wherein this groove is positioned at the 0.6R scope that each this blade is started at from this central point, and the quantity of this groove has two at least, and this groove is positioned at two relative outer rims of each this blade.
4. flabellum as claimed in claim 1, wherein this groove scope between the 0.6R to 0.9R that each this blade is started at from this central point.
5. flabellum as claimed in claim 1, wherein this groove scope between the 0.6R to 0.9R that each this blade is started at from this central point, and the quantity of this groove has two at least, and this groove is positioned at two relative outer rims of each this blade.
6. the flabellum of a centrifugal fan comprises at least:
Wheel hub has a central point;
Connecting ring, be located at this wheel hub around; And
A plurality of blades are connected to this connecting ring, and the outer most edge of those blades roughly to define with this central point be a circle in the center of circle, this circle has a radius R, defines at least one first groove between each this blade and this wheel hub, this first groove comprises at least:
One greater than 0.5 millimeter the degree of depth; And
One obtuse angle less than 170 degree is the angle of the outer rim of this groove inner side edge and this blade.
7. flabellum as claimed in claim 6, wherein the outer rim of the inner edge of this connecting ring and this wheel hub is a seamless connectivity.
8. flabellum as claimed in claim 7, wherein this first groove is positioned at the 0.6R scope that each this blade is started at from this central point.
9. flabellum as claimed in claim 8, wherein this first groove has two, and this groove is positioned at the two opposite sides of this connecting ring.
10. flabellum as claimed in claim 7, wherein each this blade also comprises at least one second groove, scope between the 0.6R to 0.9R that starts at from this central point.
11. flabellum as claimed in claim 10, wherein the quantity of this second groove has two at least, and this at least two second groove is positioned at two relative outer rims of each this blade.
12. flabellum as claimed in claim 6, wherein the inner edge of this connecting ring is gapped the connection with the outer rim of this wheel hub.
13. flabellum as claimed in claim 12, wherein this first groove is positioned at the 0.6R scope that each this blade is started at from this central point.
14. flabellum as claimed in claim 13, wherein each this blade also comprises at least one second groove, scope between the 0.6R to 0.9R that starts at from this central point.
15. flabellum as claimed in claim 14, wherein the quantity of this second groove has two at least, and this at least two second groove is positioned at two relative outer rims of each this blade.
16. a centrifugal fan comprises at least:
Flabellum comprises:
Wheel hub has a central point; And
A plurality of blades are connected to this wheel hub, and the outer most edge of those blades roughly to define with this central point be a circle in the center of circle, this circle has a radius R, each this blade has at least one groove, this groove comprises at least:
The degree of depth greater than 0.5 millimeter; And
Less than the obtuse angle of 170 degree, be the angle of the outer rim of this groove inner side edge and this blade;
Motor is connected in this wheel hub and drives this flabellum and rotates; And
Housing coats this flabellum and this motor, this housing have at least one wind inlet be positioned at this flabellum axially, and have at least one wind inlet and be positioned at this flabellum radially.
17. centrifugal fan as claimed in claim 16, wherein this groove is positioned at the 0.6R scope that each this blade is started at from this central point.
18. centrifugal fan as claimed in claim 1, wherein this groove scope between the 0.6R to 0.9R that each this blade is started at from this central point.
19. a centrifugal fan comprises at least:
Flabellum comprises:
Wheel hub has a central point;
Connecting ring, be located at this wheel hub around; And
A plurality of blades are connected to this connecting ring, and the outer most edge of those blades roughly to define with this central point be a circle in the center of circle, define at least one first groove between each this blade and this wheel hub, this first groove comprises at least:
One greater than 0.5 millimeter the degree of depth; And
One obtuse angle less than 170 degree is the angle of the outer rim of this groove inner side edge and this blade.
Motor is connected in this wheel hub and drives this flabellum and rotates; And
Housing coats this flabellum and this motor, this housing have at least one wind inlet be positioned at this flabellum axially, and have at least one wind inlet and be positioned at this flabellum radially.
20. centrifugal fan as claimed in claim 19, wherein the outer rim of the inner edge of this connecting ring and this wheel hub is a seamless connectivity, and this first groove is positioned at the 0.6R scope that each this blade is started at from this central point.
21. centrifugal fan as claimed in claim 19, wherein the outer rim of the inner edge of this connecting ring and this wheel hub is a seamless connectivity, and each this blade also comprises at least one second groove, scope between the 0.6R to 0.9R that starts at from this central point.
22. centrifugal fan as claimed in claim 19, wherein the inner edge of this connecting ring is gapped the connection with the outer rim of this wheel hub, and this first groove is positioned at the 0.6R scope that each this blade is started at from this central point.
23. centrifugal fan as claimed in claim 19, wherein the inner edge of this connecting ring is gapped the connection with the outer rim of this wheel hub, and each this blade also comprises at least one second groove, scope between the 0.6R to 0.9R that starts at from this central point.
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| CN201010563587.9A CN102478020B (en) | 2010-11-24 | 2010-11-24 | Centrifugal fan and fan blade thereof |
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| CN201010563587.9A CN102478020B (en) | 2010-11-24 | 2010-11-24 | Centrifugal fan and fan blade thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106640321A (en) * | 2016-12-09 | 2017-05-10 | 重庆道同动力机械设备有限公司 | Heat exchange wind wheel structure of engine |
| WO2019148468A1 (en) * | 2018-02-02 | 2019-08-08 | 华为技术有限公司 | Fan and mobile terminal |
| CN112240312A (en) * | 2019-07-18 | 2021-01-19 | 昆山广兴电子有限公司 | Fan wheel |
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| US20060222491A1 (en) * | 2005-04-01 | 2006-10-05 | Japan Servo Co., Ltd. | Centrifugal fan |
| CN101358607A (en) * | 2007-08-03 | 2009-02-04 | 富准精密工业(深圳)有限公司 | Blade structure |
| CN101463831A (en) * | 2007-12-19 | 2009-06-24 | 富准精密工业(深圳)有限公司 | Cooling fan and its fan blades |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640321A (en) * | 2016-12-09 | 2017-05-10 | 重庆道同动力机械设备有限公司 | Heat exchange wind wheel structure of engine |
| WO2019148468A1 (en) * | 2018-02-02 | 2019-08-08 | 华为技术有限公司 | Fan and mobile terminal |
| CN112240312A (en) * | 2019-07-18 | 2021-01-19 | 昆山广兴电子有限公司 | Fan wheel |
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| CN102478020B (en) | 2015-06-03 |
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