CN103671241B - The impeller of radiation fan - Google Patents
The impeller of radiation fan Download PDFInfo
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- CN103671241B CN103671241B CN201210328226.5A CN201210328226A CN103671241B CN 103671241 B CN103671241 B CN 103671241B CN 201210328226 A CN201210328226 A CN 201210328226A CN 103671241 B CN103671241 B CN 103671241B
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- blade
- several
- ora terminalis
- impeller
- central shaft
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Abstract
An impeller for radiation fan, comprises an impeller seat, a central shaft, one first vane group and one second vane group.This impeller seat is provided with an axis part and a connecting part; This central shaft is incorporated into the axis part of this impeller seat; This first vane group comprises several first blade, this several first blade is in conjunction with the connecting part of this impeller seat, and this several first blade is connected in series with a connecting ring, this several first blade has one first wind dispelling portion and one second wind dispelling portion, and wherein the second wind dispelling portion of this several first blade is respectively equipped with a diversion gap; This second vane group comprises several second blade, this several second blade is in conjunction with the connecting ring of this first vane group, and this several second blade lays respectively between the diversion gap of this adjacent several first blade, to reduce noise and to promote wind dispelling radiating effect simultaneously.
Description
Technical field
The invention relates to a kind of impeller of radiation fan, especially a kind of impeller of radiation fan of the noise produced when can reduce rotation.
Background technique
Please refer to shown in Fig. 1, for TaiWan, China No. M431957 " blade structure of centrifugal cutter " new patent, this new patent discloses a kind of impeller 9 of existing radiation fan, and this impeller 9 comprises wheel hub 91,1 first flabellum body group 92 and an one second flabellum body group 93.Wherein this wheel hub 91 weeks sides are provided with a junction 94, and this joint 94 has one first side 941 and one second side 942; This first flabellum body group 92 and the second flabellum body group 93 are located at this joint 94, and this first flabellum body group 92 and the second flabellum body group 93 extend from the opposite direction of this first side 941 and the second side 942 respectively; Whereby, utilize the bidirectional booster structure of this first flabellum body group 92 aforementioned and the second flabellum body group 93, to reach the effect of wind dispelling heat radiation simultaneously and reduction noise.
When this existing impeller 9 is applied to centrifugal fan, and when utilizing motor to drive this impeller 9 to rotate start, by the baffling characteristics of centrifugal impeller, this existing impeller 9 mainly utilizes this first flabellum body group 92 and the second flabellum body group 93 to import air-flow from axial direction, air-flow is derived again, to carry out wind dispelling heat radiation operation via radial direction.
But, because this first flabellum body group 92 extends towards the first direction, side 941 from the second side 942 of this joint 94, this the second flabellum body group 93 then extends towards the second direction, side 942 from the first side 941 of this joint 94, each blade of this first flabellum body group 92 is caused only to axially extend to this joint 94, between each blade not extending to this second flabellum body group 93 further; Therefore, when the first flabellum body group 92 of existing impeller 9 is after axial direction imports air-flow, cannot effectively further again by air stream axle to the wind dispelling position being directed into this second flabellum body group 93, therefore cause most air-flow to be derived (airflow direction S as shown in Figure 1) by this first flabellum body group 92 with radial direction, cause the overall wind dispelling radiating effect of existing impeller 9 not good.
Generally speaking, though existing impeller 9 can utilize the double layer construction of this first flabellum body group 92 and the second flabellum body group 93 to design, reach the effect reducing noise, but also because this first flabellum body group 92 and the second flabellum body group 93 extend towards different direction for demarcating with this joint 94, therefore, while there is reduction noise function, namely as the wind dispelling radiating effect of aforementioned relatively easy sacrificial section, therefore still have the necessity improved.
Summary of the invention
Main purpose of the present invention is to provide a kind of impeller of radiation fan, and this impeller while having reduction noise, still can retain preferably wind dispelling radiating effect, to have the good function reducing noise and promote wind dispelling radiating effect concurrently simultaneously.
The impeller of radiation fan of the present invention mainly comprises an impeller seat, a central shaft, one first vane group and one second vane group.This impeller seat is provided with an axis part and a connecting part; This central shaft is provided with a fixed connecting end, and this fixed connecting end is incorporated into the axis part of this impeller seat; This first vane group comprises several first blade, this several first blade is in conjunction with the connecting part of this impeller seat, and this several first blade is connected in series with a connecting ring, this several first blade has one first wind dispelling portion and one second wind dispelling portion in the axially differentiation of this central shaft, and wherein the second wind dispelling portion of this several first blade is respectively equipped with a diversion gap; This second vane group comprises several second blade, and this several second blade is in conjunction with the connecting ring of this first vane group, and this several second blade lays respectively between the diversion gap of this adjacent several first blade.
The impeller of radiation fan of the present invention is better on the axial direction of the central axis of this central shaft, this several first blade is provided with one first ora terminalis and one second ora terminalis, first ora terminalis of this first blade is as inlet air side, formation one first wind dispelling portion and one second wind dispelling portion is distinguished between this first ora terminalis and the second ora terminalis, this the first wind dispelling portion this first ora terminalis contiguous, this second wind dispelling portion this second ora terminalis contiguous.
Several first blades of the impeller of radiation fan of the present invention define a reference line, this reference line is by this connecting ring and perpendicular to the central axis of this central shaft, between the first ora terminalis that first wind dispelling portion of this several first blade is positioned at this first blade and this reference line, between the second ora terminalis that the second wind dispelling portion of this several first blade is positioned at this first blade and this reference line.
The better end face by this connecting ring of reference line of the impeller of radiation fan of the present invention, this end face is towards the first ora terminalis of this several first blade.
Leaf margin portion outside a relative inner lobe edge and is provided with between first ora terminalis of several first blades of the impeller of radiation fan of the present invention and the second ora terminalis, this inner lobe edge this central shaft contiguous, outside this, leaf margin portion is away from this central shaft, the leaf margin portion, outside of better this several first blade adjoining of this diversion gap.
Several first blades of the first vane group of the impeller of radiation fan of the present invention have a first end angle and one second end angle, this first end angle is positioned at the corner position of this inner lobe edge this first ora terminalis adjoining, this first end angle to this central shaft central axis between there is one first radial distance, this the second end angle is positioned at the corner position of the connecting part of this inner lobe edge this impeller seat adjoining, this the second end angle to this central shaft central axis between there is one second radial distance, this first radial distance is better is greater than this second radial distance.
The better connection one in leaf margin portion, the outside retaining collar of several first blades of the impeller of radiation fan of the present invention.
The impeller of radiation fan of the present invention is better on the axial direction of the central axis of this central shaft, this several second blade is provided with one first ora terminalis and one second ora terminalis, leaf margin portion outside a relative inner lobe edge and is provided with between first ora terminalis of this several second blade and the second ora terminalis, inner lobe edge this central shaft contiguous of this several second blade, the leaf margin portion, outside of this several second blade is away from this central shaft, and this second blade is with the connecting ring of its first ora terminalis in conjunction with this first vane group.
The inner lobe edge of several second blades of the impeller of radiation fan of the present invention is compared with Jia Qieqi or do not exceed side ring side face in this connecting ring; Or the second ora terminalis of this several second blade is in the axial direction compared with second ora terminalis of Jia Qieqi in the first vane group.
The impeller seat of the impeller of radiation fan of the present invention is better has a hub portion, and this axis part is the axle bed being arranged at these central authorities of hub portion, and this connecting part is the outer ring plate extended from this hub portion outer periphery radial direction.
The radial expanded range of several second blades of the impeller of radiation fan of the present invention is better is positioned at the outer ring side face of this connecting ring and the scope of side ring side face.
The better several first blades spacing each other equaling this first vane group of several second blades spacing each other of the impeller of radiation fan of the present invention.
Accompanying drawing explanation
Fig. 1: the stereo appearance figure of the impeller of existing radiation fan.
Fig. 2: the stereo appearance figure of the impeller of radiation fan of the present invention.
Fig. 3: the sectional view of the impeller of radiation fan of the present invention.
Fig. 4: the impeller of radiation fan of the present invention is along the cross-sectional schematic of the 4-4 line of Fig. 3.
[primary component symbol description]
(the present invention)
1 impeller seat
11 connecting part, axis parts 12
13 hub portions
2 central shafts
21 fixed connecting ends
3 first vane group
31 first blade 31a first wind dispelling portions
31b second wind dispelling portion 311 first ora terminalis
312 second ora terminalis 313 inner lobe edges
Leaf margin portion 32 connecting ring outside 314
33 diversion gap 34 retaining collars
4 second vane group
41 second blade 411 first ora terminalis
412 second ora terminalis 413 inner lobe edges
Leaf margin portion outside 414
D1 first radial distance D2 second radial distance
E1 first end angle E2 second end angle
L reference line X central axis
S airflow direction
(prior art)
9 impellers
91 wheel hub 92 first flabellum body groups
93 second flabellum body group 94 joints
941 first side, sides 942 second
S airflow direction.
Embodiment
For above-mentioned and other object of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and coordinate accompanying drawing, be described in detail below:
Please refer to shown in Fig. 2,3 and 4, the impeller of the radiation fan of present pre-ferred embodiments discloses a kind of centrifugal impeller, and this impeller mainly comprises impeller seat 1, central shaft 2,1 first vane group 3 and one second vane group 4.This central shaft 2 is incorporated into the central position of this impeller seat 1, and this first vane group 3 and this second vane group 4 are arranged at all sides of this impeller seat 1.
This impeller seat 1 is provided with an axis part 11 and the connecting part 12 away from this axis part 11.This axis part 11 be various can in order to fix the structural design of this central shaft 2, in this preferred embodiment, this impeller seat 1 has a hub portion 13, this axis part 11 for being arranged at the axle bed of these central authorities of hub portion 13, in order to this central shaft 2 affixed; This connecting part 12 is the outer ring plate extended from this hub portion 13 outer periphery radial direction, and this outer ring plate as seen in figures 2 and 3, can form several hollow part in surface, or this outer ring plate also can be the complete ring bodies in surface, combines with for this first vane group 3.
This central shaft 2 is provided with a fixed connecting end 21, this fixed connecting end 21 is incorporated into the axis part 11 of this impeller seat 1, the fixed connecting end 21 of this central shaft 2 and the secure bond mode of the axis part 11 of this impeller seat 1 can adopt as coated in ejection formation, buckle, locking, weld, drive fit, cementation ... Deng.Wherein preferred embodiment be as shown in Figure 2 disclose this impeller seat 1 axis part 11 with the fixed connecting end 21 of plastic rubber ejaculate molding mode this central shaft 2 coated.
This first vane group 3 comprises several first blade 31, this several first blade 31 is incorporated into the connecting part 12 of this impeller seat 1, and this several first blade 31 is connected in series with a connecting ring 32, on the axial direction of the central axis X of this central shaft 2, this several first blade 31 is provided with one first ora terminalis 311 and one second ora terminalis 312, formation one first wind dispelling portion 31a and one second wind dispelling portion 31b is distinguished between this first ora terminalis 311 and the second ora terminalis 312, this first wind dispelling portion 31a this first ora terminalis 311 contiguous, this second wind dispelling portion 31b this second ora terminalis 312 contiguous; Again, wherein the second wind dispelling portion 31b of this several first blade 31 is then respectively provided with a diversion gap 33, can carry out wind dispelling heat radiation operation smoothly for this second vane group 4.
In present pre-ferred embodiments, as shown in Figure 3, first ora terminalis 311 of this first blade 31 can as inlet air side, leaf margin portion 314 outside a relative inner lobe edge 313 and one is provided with between first ora terminalis 311 of this several first blade 31 and the second ora terminalis 312, wherein this central shaft contiguous 2(in this inner lobe edge 313 is namely towards the direction of the central shaft 2 in graphic), outside this leaf margin portion 314 away from this central shaft 2(namely towards the direction outside the impeller in graphic); Again, this several first blade 31 all defines a reference line L, and this reference line L is by this connecting ring 32 and perpendicular to the central axis X of this central shaft 2, in more detail, aforementioned basic line L is the end face by this connecting ring 32, and this end face is towards this first ora terminalis 311.
Accordingly, the better wind dispelling position be defined as between first ora terminalis 311 and this reference line L of this first blade 31 of this first wind dispelling portion 31a; The better wind dispelling position be defined as between second ora terminalis 312 and this reference line L of this first blade 31 of this second wind dispelling portion 31b; In addition, this diversion gap 33 is located at this second wind dispelling portion 31b and better adjoining leaf margin portion 314 outside this, in order to guarantee that this second vane group 4 can more successfully be dispelled the heat by radial guiding stream of giving vent to anger.
Again, shown in Fig. 3, several first blades 31 of this first vane group 3 have a first end angle E1 and one second end angle E2.Wherein this first end angle E1 is positioned at the corner position of this inner lobe edge 313 this first ora terminalis 311 adjoining, this first end angle E1 to this central shaft 2 central axis X between there is one first radial distance D1; This second end angle E2 is positioned at the corner position of the connecting part 12 of this inner lobe edge 313 this impeller seat 1 adjoining, this second end angle E2 to this central shaft 2 central axis X between there is one second radial distance D2; In present pre-ferred embodiments, this first radial distance D1 is greater than this second radial distance D2, whereby, the inner lobe edge 313 of this several first blade 31 can be made to be that axioversion extends shape relative to this central axis X, when the impeller originally dispersing Hot-air fan is as centrifugal impeller, this several first blade 31 can be made more easily axially to import air-flow, to promote overall wind dispelling radiating effect; In addition, the leaf margin portion, outside 314 of this several first blade 31 also can utilize a retaining collar 34 to be connected, this first ora terminalis 311 of the better vicinity of this retaining collar 34, whereby, this several first blade 31 can be limited to be fixed between the connecting part 12 of this impeller seat 1 and this retaining collar 34, with the overall construction intensity of this several first blade 31 of efficient hardening.
This second vane group 4 comprises several second blade 41, and this several second blade 41 is in conjunction with the connecting ring 32 of this first vane group 3; Again, as seen in figures 2 and 3, this several second blade 41 lays respectively between the diversion gap 33 of this several first blade 31.
In present pre-ferred embodiments, as shown in Figure 3, on the axial direction of the central axis X of this central shaft 2, this several second blade 41 is provided with one first ora terminalis 411 and one second ora terminalis 412, leaf margin portion 414 outside a relative inner lobe edge 413 and one is provided with between first ora terminalis 411 of this several second blade 41 and the second ora terminalis 412, wherein this central shaft contiguous 2(in this inner lobe edge 413 is namely towards the direction of the central shaft 2 in graphic), outside this leaf margin portion 414 away from this central shaft 2(namely towards the direction outside the impeller in graphic).Accordingly, this second blade 41 is preferably with the connecting ring 32 of its first ora terminalis 411 in conjunction with this first vane group 3, and the second ora terminalis 412 of this second blade 41 is preferably the second ora terminalis 312 trimmed in the first vane group 3 in the axial direction, this second vane group 4 can be arranged in pairs or groups wind dispelling area that this first vane group 3 provides enough.
Moreover, the inner lobe edge 413 of this several second blade 41 is preferably and trims or lower than the interior side ring side face of (being namely do not exceed) this connecting ring 32, or, the radial expanded range of this several second blade 41 is preferably and is positioned at the outer ring side face of this connecting ring 32 and the scope of side ring side face, whereby, this several second blade 41 all can be avoided to affect the axial diversion effect of the second wind dispelling portion 31b of this several first blade 31, and with being easy to make shaping advantage; Again, better several first blades 31 spacing each other that also can equal this first vane group 3 of these several second blades 41 spacing each other, reaches for impeller of the present invention and promotes the shaping effect easily of making.
The impeller of radiation fan of the present invention, when reality uses, can be applied to as axial-flow type radiator fan, blast-type cooling fan or horizontal convection fan, wherein be preferably based on centrifugal heat radiation fan.For centrifugal heat radiation fan, it is inner that impeller of the present invention is installed in a fan frame (not illustrating) rotationally, recycle a motor (not illustrating) drive this impeller to rotate start (motor of radiation fan drives the detailed construction of impeller start composition and makes flowing mode, usually know that the knowledgeable is appreciated that to hold herein do not repeat for having in radiation fan art); Whereby, this radiation fan can in order to provide preferably thermolysis for the thermal source produced during various electronic product running.
By the impeller of the radiation fan of the invention described above preferred embodiment, please refer to shown in Fig. 3, this impeller can utilize the double layer construction of this first vane group 3 and the second vane group 4 to design, reaching the effect reducing noise (utilizes the design of twi-tier blade group to reduce the know-why of noise, for it will be appreciated by those skilled in the art that, and this case prior art also states clearly the twi-tier blade group structure having and can reduce noise, thus hold herein do not repeat).
Again, because each first blade 31 of this first vane group 3 all has the second wind dispelling portion 31b of all sides scope extending to this second vane group 4; Therefore, when the first vane group 3 of impeller of the present invention is after axial direction imports air-flow, can more easily by air stream axle to all sides scope being directed into this second vane group 4, so that most air-flow all positively can be derived (airflow direction S as shown in Figure 3) by this first vane group 3 and this second vane group 4, and then relatively possesses preferably wind dispelling radiating effect; Moreover, because each first blade 31 cooperation of the present invention first vane group 3 is provided with this diversion gap 33, and this several second blade 41 lays respectively between the diversion gap 33 of this several first blade 31, therefore, although each first blade 31 of this first vane group 3 extends to all sides scope of this second vane group 4, but still be unlikely to affect the original carminative effects of this several second blade 41.
In sum, the impeller of radiation fan of the present invention is while utilizing this first vane group 3 and this second vane group 4 to provide reduction noise function, this several first blade 31 is more provided with the second wind dispelling portion 31b of all sides scope extending to this second vane group 4, coordinate the design of this diversion gap 33, to guarantee that this impeller is being possessed under the precondition reducing noise function, still there is preferably carminative effects, therefore radiation fan of the present invention can have the effect reducing noise and promote carminative effects concurrently simultaneously.
Claims (13)
1. an impeller for radiation fan, is characterized in that, it comprises:
An impeller seat, this impeller seat is provided with an axis part and a connecting part;
A central shaft, this central shaft is provided with a fixed connecting end, and this fixed connecting end is incorporated into the axis part of this impeller seat;
First vane group, this first vane group comprises several first blade, this several first blade is in conjunction with the connecting part of this impeller seat, and this several first blade is connected in series with a connecting ring, this several first blade has a first wind dispelling portion and a second wind dispelling portion in the axially differentiation of this central shaft, and wherein the second wind dispelling portion of this several first blade is respectively equipped with a diversion gap; And
One second vane group, this second vane group comprises several second blade, and this several second blade is incorporated on the connecting ring of this first vane group, and this several second blade lays respectively between the diversion gap of this adjacent several first blade.
2. the impeller of radiation fan as claimed in claim 1, it is characterized in that, on the axial direction of the central axis of this central shaft, this several first blade is provided with first ora terminalis and second ora terminalis, first ora terminalis of this first blade is as inlet air side, formation first wind dispelling portion and a second wind dispelling portion is distinguished, this first wind dispelling portion this first ora terminalis contiguous, this second wind dispelling portion this second ora terminalis contiguous between this first ora terminalis and the second ora terminalis.
3. the impeller of radiation fan as claimed in claim 2, it is characterized in that, this several first blade definition has reference line, this reference line is by this connecting ring and perpendicular to the central axis of this central shaft, between the first ora terminalis that first wind dispelling portion of this several first blade is positioned at this first blade and this reference line, between the second ora terminalis that the second wind dispelling portion of this several first blade is positioned at this first blade and this reference line.
4. the impeller of radiation fan as claimed in claim 3, is characterized in that, this reference line is by the end face of this connecting ring towards the first ora terminalis of this several first blade.
5. the impeller of radiation fan as claimed in claim 2, it is characterized in that, a relative inner lobe edge and leaf margin portion, an outside is provided with between first ora terminalis of this several first blade and the second ora terminalis, this inner lobe edge this central shaft contiguous, outside this, leaf margin portion is away from this central shaft, the leaf margin portion, outside of this diversion gap this several first blade adjoining.
6. the impeller of radiation fan as claimed in claim 5, it is characterized in that, several first blades of this first vane group have a first end angle and a second end angle, this first end angle is positioned at the corner position of this inner lobe edge this first ora terminalis adjoining, this first end angle to this central shaft central axis between there is first radial distance, this the second end angle is positioned at the corner position of the connecting part of this inner lobe edge this impeller seat adjoining, this the second end angle to this central shaft central axis between there is second radial distance, this first radial distance is greater than this second radial distance.
7. the impeller of radiation fan as claimed in claim 5, it is characterized in that, the leaf margin portion, outside of this several first blade connects a retaining collar.
8. the impeller of radiation fan as claimed in claim 1, it is characterized in that, on the axial direction of the central axis of this central shaft, this several second blade is provided with one first ora terminalis and one second ora terminalis, a relative inner lobe edge and leaf margin portion, an outside is provided with between first ora terminalis of this several second blade and the second ora terminalis, inner lobe edge this central shaft contiguous of this several second blade, the leaf margin portion, outside of this several second blade is away from this central shaft, and this second blade is with the connecting ring of its first ora terminalis in conjunction with this first vane group.
9. the impeller of radiation fan as claimed in claim 8, is characterized in that, the inner lobe edge of this several second blade trims or lower than side ring side face in this connecting ring.
10. the impeller of radiation fan as claimed in claim 2, it is characterized in that, on the axial direction of the central axis of this central shaft, this several second blade is provided with first ora terminalis and second ora terminalis, a relative inner lobe edge and leaf margin portion, an outside is provided with between first ora terminalis of this several second blade and the second ora terminalis, inner lobe edge this central shaft contiguous of this several second blade, the leaf margin portion, outside of this several second blade is away from this central shaft, this second blade is with the connecting ring of its first ora terminalis in conjunction with this first vane group, second ora terminalis of this several second blade trims the second ora terminalis in the first vane group in the axial direction.
The impeller of 11. radiation fans as described in claim 1,2,3,4,5,6,7,8,9 or 10, it is characterized in that, wherein this impeller seat has a hub portion, and this axis part is the axle bed being arranged at these central authorities of hub portion, and this connecting part is the outer ring plate extended from this hub portion outer periphery radial direction.
The impeller of 12. radiation fans as described in claim 1,2,3,4,5,6,7,8,9 or 10, it is characterized in that, the radial expanded range of this several second blade is positioned at the outer ring side face of this connecting ring and the scope of side ring side face.
The impeller of 13. radiation fans as described in claim 1,2,3,4,5,6,7,8,9 or 10, it is characterized in that, these several second blades spacing each other equals several first blades spacing each other of this first vane group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328226.5A CN103671241B (en) | 2012-09-07 | 2012-09-07 | The impeller of radiation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328226.5A CN103671241B (en) | 2012-09-07 | 2012-09-07 | The impeller of radiation fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671241A CN103671241A (en) | 2014-03-26 |
| CN103671241B true CN103671241B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210328226.5A Active CN103671241B (en) | 2012-09-07 | 2012-09-07 | The impeller of radiation fan |
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| Country | Link |
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| CN (1) | CN103671241B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323901B (en) * | 2021-06-09 | 2023-04-07 | 奇鋐科技股份有限公司 | Series fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675472A (en) * | 2002-08-02 | 2005-09-28 | 斯帕尔公司 | A centrifugal fan impeller with blades inclined relative to the axis of rotation |
| CN202140340U (en) * | 2011-05-06 | 2012-02-08 | 奇鋐科技股份有限公司 | Multilayer impeller centrifugal fan |
| CN202284569U (en) * | 2011-09-16 | 2012-06-27 | 奇鋐科技股份有限公司 | Improved fan blade structure of centrifugal fan |
| CN202851449U (en) * | 2012-09-07 | 2013-04-03 | 昆山广兴电子有限公司 | Impeller of cooling fan |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7632073B2 (en) * | 2005-06-08 | 2009-12-15 | Dresser-Rand Company | Impeller with machining access panel |
| JP5695867B2 (en) * | 2010-09-13 | 2015-04-08 | 株式会社東芝 | Turbine generator cooling fan and manufacturing method thereof |
-
2012
- 2012-09-07 CN CN201210328226.5A patent/CN103671241B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1675472A (en) * | 2002-08-02 | 2005-09-28 | 斯帕尔公司 | A centrifugal fan impeller with blades inclined relative to the axis of rotation |
| CN202140340U (en) * | 2011-05-06 | 2012-02-08 | 奇鋐科技股份有限公司 | Multilayer impeller centrifugal fan |
| CN202284569U (en) * | 2011-09-16 | 2012-06-27 | 奇鋐科技股份有限公司 | Improved fan blade structure of centrifugal fan |
| CN202851449U (en) * | 2012-09-07 | 2013-04-03 | 昆山广兴电子有限公司 | Impeller of cooling fan |
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| Publication number | Publication date |
|---|---|
| CN103671241A (en) | 2014-03-26 |
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