CN1309962C - Radiating fan structure - Google Patents
Radiating fan structure Download PDFInfo
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- CN1309962C CN1309962C CNB031429440A CN03142944A CN1309962C CN 1309962 C CN1309962 C CN 1309962C CN B031429440 A CNB031429440 A CN B031429440A CN 03142944 A CN03142944 A CN 03142944A CN 1309962 C CN1309962 C CN 1309962C
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- blower
- casting
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- radiating fin
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Abstract
The present invention discloses a structure of a radiating fan, which comprises a fan casing, a radiating fin, a fan wheel and an upper cover, wherein the radiating fin is arranged beside an air outlet of the fan casing, the radiating fin is provided with a plurality of fins, a plurality of airflow channels and a plurality of radiating column, and the sectional area at the air intake side of each airflow channel is relatively larger than the sectional area at the air outtake side of each airflow channel to form a pressure increasing and flow retarding structure. Thus, the radiating fan of the present invention uses the pressure increasing and flow retarding structure of each airflow channel to slow the quick loss of airflow, and the time of heat exchange of the airflow and the fins can be relatively prolonged.
Description
Technical field
The present invention relates to a kind of heat-dissipating fan, more particularly, relate to a kind of passing through and utilize this radiating fin to form several air-flow path, and further form supercharging unhurried current structure to promote the heat-dissipating fan structure of integral heat sink efficient at blower-casting exhaust outlet arranged outside radiating fin.
Background technique
Traditional heat-dissipating fan structure as shown in Figure 1, includes a blower-casting 10, a radiating fin 20, an impeller 30 and a loam cake 40.Blower-casting 10 forms a room 12 and at least one exhaust outlet 13 by several sidewalls 11.The radiating fin 20 one-body molded outsides that are formed on exhaust outlet 13, and convex with the fin 21a that several constitute several heat dissipation channels 22a.Impeller is located in the room 12 for 30 groups, and is provided with several blades 31.Loam cake 40 is covered on the top of blower-casting 10 and radiating fin 20, and offers a wind inlet 41.When dispelling the heat, impeller 30 is by several blade 31 rotation wind dispellings, make cooling blast enter to blower-casting 10 from wind inlet 41, then radially blow radiating fin 20, so that carry out heat exchange by a heat-generating electronic elements (not shown) of fin 21a and heat dissipation channel 22a and below toward exhaust outlet 13 sides.Though, heat-dissipating fan has integrated blower-casting 10 and radiating fin 20, make it simple in structure and be applicable to ultra-thin short and small electronic equipment, but the air-flow too fast air-flow path 22a from wide between two fins easily directly runs off, thereby can't carry out sufficient heat exchange action, be difficult to further promote whole radiating efficiency.Moreover two sides of the inwall of blower-casting 10 sidewalls 11 in exhaust outlet 13 positions form a corner 14 respectively, cause cooling blast can't flow into radiating fin 20 smoothly, therefore influence integral heat sink efficient.
In view of this, creator among the present invention is by being convexly equipped with wavy or jagged several fins on radiating fin, and between each two adjacent fin, form a snake-respiring exercise circulation road and several heat dissipation columns, the sectional area that makes serpentine flow path inlet air side simultaneously is relatively greater than the sectional area of serpentine flow path air side, constitute supercharging unhurried current structure, thereby significantly increase total heat radiation length of air-flow path and total heat exchange area of fin, prolong the time that air-flow and fin carry out heat exchange, promote the integral heat sink efficient of radiating fin.
Summary of the invention
Main purpose of the present invention is to provide a kind of and by the air-out oral-lateral at blower-casting one radiating fin is set, make radiating fin have several air-flow paths, and the sectional area of this air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, thereby further prolong the heat-dissipating fan structure that air-flow and fin carry out heat exchanger time relatively.
Secondary objective of the present invention is to provide one by arrange wavy or jagged several fins on radiating fin, to form several snake-respiring exercise circulation roads and several heat dissipation columns, thereby can increase air-flow path always dispel the heat length and the total heat exchange area of fin, and prolong the heat-dissipating fan structure that air-flow and fin carry out heat exchanger time.
Heat-dissipating fan structure among the present invention consists predominantly of a blower-casting, a radiating fin, an impeller and a loam cake, wherein radiating fin is located at the exhaust outlet survey of blower-casting, this radiating fin is provided with several fins, several air-flow paths, and air-flow path is a snake-respiring exercise circulation road, the sectional area of its inlet air side constitutes supercharging unhurried current structure relatively greater than the sectional area of air-flow path air side.So, the quick loss that the heat-dissipating fan among the present invention can utilize the supercharging unhurried current structure of air-flow path to slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively, promotes the integral heat sink efficient of heat-dissipating fan.
Heat-dissipating fan structure among the present invention, it comprises: a blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet; One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin; One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And a loam cake, be covered on the top of blower-casting and radiating fin on this, and be provided with a wind inlet; Wherein, described air-flow path is a snake-respiring exercise circulation road, and the vertical height of described radiating fin is successively decreased toward the air side by the inlet air side, make the sectional area of air-flow path air side less relatively, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
Heat-dissipating fan structure among the present invention, it comprises: a blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet; One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin; One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And a loam cake, be covered on the top of blower-casting and radiating fin on this, and be provided with a wind inlet; It is characterized in that: described air-flow path is a snake-respiring exercise circulation road, and described air-flow path is provided with several heat dissipation columns in addition, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
Heat-dissipating fan structure among the present invention, it comprises: a blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet; One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin; One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And a loam cake, be covered on the top of blower-casting and radiating fin on this, and be provided with a wind inlet; Wherein, described air-flow path is a snake-respiring exercise circulation road, and the part fin of described radiating fin shortens length in the exhaust outlet position near blower-casting, form several bigger air guide holes of width, make air-flow enter air-flow path by smooth exhaust outlet by heat-dissipating fan, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
Heat-dissipating fan structure among the present invention, it comprises: a blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet; One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin; One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And a loam cake, be covered on the top of blower-casting and radiating fin on this, and be provided with a wind inlet; Wherein, described air-flow path is a snake-respiring exercise circulation road, and the inwall of described blower-casting sidewall forms a guide face respectively in exhaust outlet position two sides, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment among the present invention is described in further detail.
Fig. 1 is the three-dimensional exploded view of traditional heat-dissipating fan:
Fig. 2 is the three-dimensional exploded view of heat-dissipating fan in the first embodiment of the invention;
Fig. 3 is the cross-sectional schematic of heat-dissipating fan in the first embodiment of the invention, the flow direction of air-flow shown in this figure;
Fig. 4 is the three-dimensional exploded view of heat-dissipating fan in the second embodiment of the invention;
Fig. 5 is that heat-dissipating fan is removed schematic top plan view behind the loam cake in the second embodiment of the invention, the flow direction of air-flow shown in this figure;
Fig. 6 is the perspective exploded view of heat-dissipating fan in the third embodiment of the invention.
Embodiment
The part-structure of heat-dissipating fan is identical with the structure of the fan of traditional heat-dissipating shown in Fig. 1 among the present invention, and use same label to illustrate for these parts with same structure, for this reason, no longer elaborate for the concrete structure and the function of parts in the following embodiments with same numeral.
As shown in Figures 2 and 3, the heat-dissipating fan structure includes a blower-casting 10, a radiating fin 20, an impeller 30 and a loam cake 40 in the first embodiment of the invention.Blower-casting 10 is provided with several sidewalls 11, a room 12 and at least one exhaust outlet 13; Radiating fin 20 is located at exhaust outlet 13 outsides of blower-casting 10; Impeller 30 is located in the room 12, and has several blades 31; Loam cake 40 is covered on the top of blower-casting 10 and radiating fin 20, and is provided with a wind inlet 41.
As shown in Figures 2 and 3, the radiating fin 20 in the first embodiment of the invention includes several fins 21, several snake-respiring exercise circulation roads 22 and several heat dissipation columns 23, and radiating fin 20 can form supercharging unhurried current structure by changing vertical height simultaneously.The preferred materials that is used to make radiating fin 20 and blower-casting 10 is Heat Conduction Materials such as copper or aluminium, can amplexiform a heat-generating electronic elements (not shown) in the radiating fin 20 and the bottom surface of blower-casting 10.Fin 21 is wavy or flexuose, to increase total heat exchange area of radiating fin 20; Snake-respiring exercise circulation road 22 extends to form between each two adjacent fin 21, can increase total heat radiation length of air-flow path; Heat dissipation column 23 is arranged on several broad positions of snake-respiring exercise circulation road 22, further increases the heat exchange area of radiating fin 20; And supercharging unhurried current structure can make the vertical height of snake-respiring exercise circulation road 22 be successively decreased toward the air side by inlet air side (being exhaust outlet 13 places of blower-casting 10), so that the sectional area of snake-respiring exercise circulation road 22 air sides is less relatively, and make fin 21, snake-respiring exercise circulation road 22 and heat dissipation column 23 have the variation of highly successively decreasing simultaneously.By this, cause air-flow need expend the long time could supercharging by snake-respiring exercise circulation road 22, structure can prolong the time that air-flow and fin 21 carry out heat exchange relatively so this supercharging flows slowly.Therefore, the present invention can increase the heat exchange efficiency of unit air-flow really relatively by snake-respiring exercise circulation road 22, heat dissipation column 23 and the supercharging unhurried current structure of radiating fin 20, promotes the integral heat sink efficient of heat-dissipating fan.
As shown in Figure 2, heat-dissipating fan structure in the first embodiment of the invention is by means of the height that increases blower-casting 10 relatively, to form supercharging unhurried current structure, so, the present invention can be provided with the impeller 30 of large-size in the room 12 of blower-casting 10, so that drive more cooling blast by large-sized blade 31, increase the air flow rate of heat-dissipating fan unit time relatively.
In addition, as shown in Figure 2, heat-dissipating fan in the first embodiment of the invention can select to shorten the length of exhaust outlet 13 side part fins 21, so can make radiating fin 20 form several bigger air guide holes 221 of width, so that the exhaust outlet 13 from heat-dissipating fan 10 that air-flow can be more smooth enters snake-respiring exercise circulation road 22.The inwall of blower-casting 10 sidewalls 11 can be chosen in the guide face 111 that exhaust outlet 13 positions two sides form straight or circular arc respectively, so that cooling blast is more smoothly by flowing into exhaust outlet 13 and radiating fin 20 from room 12.
As shown in Figure 4 and Figure 5, heat-dissipating fan structure in the second embodiment of the invention, compared to first embodiment, radiating fin 20 among second embodiment be select nationality by varying width to form supercharging unhurried current structure, this supercharging unhurried current structure makes the width of snake-respiring exercise circulation road 22 be successively decreased toward the air side by inlet air side (being exhaust outlet 13 places of blower-casting 10), so that the sectional area of snake-respiring exercise circulation road 22 air sides is less relatively, and make snake-respiring exercise circulation road 22 have the width variation of successively decreasing simultaneously.By this, supercharging unhurried current structure among second embodiment can make the sectional area of snake-respiring exercise circulation road 22 air sides reduce relatively, cause air-flow need expend the long period supercharging and pass through snake-respiring exercise circulation road 22, therefore can prolong the time that air-flow and fin 21 carry out heat exchange equally relatively, and the structure among other structures and the embodiment one is identical, describes in detail no longer separately at this.
Moreover, as shown in Figure 4, preferably form supercharging unhurried current structure in the second embodiment of the invention by means of the width that increases blower-casting 10 relatively, so, the present invention can be provided with large-sized impeller 30 in the room 12 of blower-casting 10, so that drive more cooling blast by large-sized blade 31, increase the air flow rate in the heat-dissipating fan unit time relatively.As shown in Figure 6, the heat-dissipating fan structure in the third embodiment of the invention is compared to first, second embodiment, and the radiating fin 20 among the 3rd embodiment is to select to change simultaneously vertical height and width to form supercharging unhurried current structure.This supercharging unhurried current structure can make the vertical height of snake-respiring exercise circulation road 22 and width be successively decreased toward the air side gradually by inlet air side (being exhaust outlet 13 places of blower-casting 10), so that the air side sectional area of snake-respiring exercise circulation road 22 is less relatively, and make fin 21, snake-respiring exercise circulation road 22 and heat dissipation column 23 have the variation of successively decreasing of height and width simultaneously.By this, the unhurried current of the supercharging among the 3rd embodiment structure can make the air side of snake-respiring exercise circulation road 22
Sectional area reduction relatively is a lot, causing air-flow need expend the longer time comes supercharging to pass through snake-respiring exercise circulation road 22, therefore, air-flow and fin 21 can be carried out the time lengthening of heat exchange to for a long time, other structures of heat-dissipating fan are then identical with structure among above-mentioned first embodiment among the 3rd embodiment, no longer describe in detail at this.
Moreover, as shown in Figure 6, third embodiment of the invention preferably forms this supercharging unhurried current structure by means of height that increases blower-casting 10 relatively and width, so the present invention can be provided with large-sized impeller 30 in the room 12 of blower-casting 10, so that drive more cooling blast by large-sized blade 31, increase the air flow rate of heat-dissipating fan unit time relatively.
In sum, compared to traditional heat-dissipating fan, heat-dissipating fan can utilize serpentine flow path 22, heat dissipation column 23 and supercharging unhurried current structure significantly to increase total heat radiation length, total heat exchange area really among the present invention, prolong the time that air-flow and fin 21 carry out heat exchange, promote the integral heat sink efficient of heat-dissipating fan.
In addition; above-mentionedly only the preferred embodiment among the present invention is described; but can not be as protection scope of the present invention; because of as those skilled in the art it being made corresponding modification and modification is fine; therefore; the equivalence that designs spirit and make of the present invention of every foundation changes or modifies, and all should think to fall into protection scope of the present invention.
Claims (8)
1. heat-dissipating fan structure, it comprises:
One blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet;
One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin;
One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And
One loam cake is covered on the top of blower-casting and radiating fin on this, and is provided with a wind inlet;
It is characterized in that:
Described air-flow path is a snake-respiring exercise circulation road, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
2. heat-dissipating fan structure according to claim 1 is characterized in that: described fin is wavy, flexuose.
3. heat-dissipating fan structure, it comprises:
One blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet;
One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin;
One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And
One loam cake is covered on the top of blower-casting and radiating fin on this, and is provided with a wind inlet;
It is characterized in that: described air-flow path is a snake-respiring exercise circulation road, and the vertical height of described radiating fin is successively decreased toward the air side by the inlet air side, make the sectional area of air-flow path air side less relatively, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
4. heat-dissipating fan structure according to claim 3 is characterized in that: the width of described radiating fin is successively decreased toward the air side by the inlet air side, makes the sectional area of air-flow path air side less relatively, constitutes described supercharging unhurried current structure.
5. heat-dissipating fan structure according to claim 1 is characterized in that: the height of described radiating fin and width are successively decreased toward the air side by the inlet air side simultaneously, make the sectional area of air-flow path air side less relatively, constitute described supercharging unhurried current structure.
6. heat-dissipating fan structure, it comprises:
One blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet;
One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin;
One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And
One loam cake is covered on the top of blower-casting and radiating fin on this, and is provided with a wind inlet;
It is characterized in that: described air-flow path is a snake-respiring exercise circulation road, and described air-flow path is provided with several heat dissipation columns in addition, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
7. heat-dissipating fan structure, it comprises:
One blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet;
One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin;
One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And
One loam cake is covered on the top of blower-casting and radiating fin on this, and is provided with a wind inlet;
It is characterized in that: described air-flow path is a snake-respiring exercise circulation road, and the part fin of described radiating fin shortens length in the exhaust outlet position near blower-casting, form several bigger air guide holes of width, make air-flow enter air-flow path by smooth exhaust outlet by heat-dissipating fan, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
8. heat-dissipating fan structure, it comprises:
One blower-casting, this blower-casting are provided with several sidewalls, a room and at least one exhaust outlet;
One radiating fin, this radiating fin are located at the air-out oral-lateral of this blower-casting, and this radiating fin is provided with several fins, and has extended to form an air-flow path between each two fin;
One impeller, this impeller is located in the room of blower-casting, and is provided with several blades; And
One loam cake is covered on the top of blower-casting and radiating fin on this, and is provided with a wind inlet;
It is characterized in that: described air-flow path is a snake-respiring exercise circulation road, and the inwall of described blower-casting sidewall forms a guide face respectively in exhaust outlet position two sides, the sectional area of described air-flow path inlet air side is relatively greater than the sectional area of air-flow path air side, constitute supercharging unhurried current structure, the direct loss that utilizes supercharging unhurried current structure can slow down air-flow prolongs the time that air-flow and fin carry out heat exchange relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031429440A CN1309962C (en) | 2003-06-05 | 2003-06-05 | Radiating fan structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031429440A CN1309962C (en) | 2003-06-05 | 2003-06-05 | Radiating fan structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1553059A CN1553059A (en) | 2004-12-08 |
| CN1309962C true CN1309962C (en) | 2007-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031429440A Expired - Fee Related CN1309962C (en) | 2003-06-05 | 2003-06-05 | Radiating fan structure |
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| Country | Link |
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| CN (1) | CN1309962C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090619B (en) * | 2006-06-16 | 2010-05-12 | 富准精密工业(深圳)有限公司 | Heat sink device |
| CN102022350B (en) * | 2009-09-09 | 2012-05-30 | 建准电机工业股份有限公司 | Blower fan |
| CN102400924B (en) * | 2010-09-16 | 2014-08-20 | 台达电子工业股份有限公司 | Fan |
| TWI464323B (en) * | 2010-09-16 | 2014-12-11 | Delta Electronics Inc | Fan |
| CN109906010A (en) * | 2017-12-07 | 2019-06-18 | 深圳三诺信息科技有限公司 | A kind of cooling system |
| CN110494011B (en) * | 2019-07-22 | 2021-04-20 | 苏州佳世达光电有限公司 | Heat dissipation system and heat dissipation module |
| CN110764343B (en) * | 2019-09-30 | 2021-12-07 | 深圳市火乐科技发展有限公司 | Projector |
| CN111741655B (en) * | 2020-06-30 | 2022-03-25 | 联想(北京)有限公司 | Heat dissipation device and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10154782A (en) * | 1993-08-20 | 1998-06-09 | Sanyo Denki Co Ltd | Electronic parts cooling device |
| JP2000104697A (en) * | 1998-09-25 | 2000-04-11 | Matsushita Electric Ind Co Ltd | Integrated fan cooling system |
| CN2402848Y (en) * | 1999-08-03 | 2000-10-25 | 梁德 | Radiating fan |
| CN2445118Y (en) * | 2000-10-09 | 2001-08-29 | 元山科技工业股份有限公司 | Heat-sinking fan |
| JP2003003998A (en) * | 2001-06-13 | 2003-01-08 | Taida Electronic Ind Co Ltd | Sirocco type heat radiator |
| CN2544123Y (en) * | 2002-04-27 | 2003-04-09 | 李国良 | bidirectional inlet fan |
-
2003
- 2003-06-05 CN CNB031429440A patent/CN1309962C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10154782A (en) * | 1993-08-20 | 1998-06-09 | Sanyo Denki Co Ltd | Electronic parts cooling device |
| JP2000104697A (en) * | 1998-09-25 | 2000-04-11 | Matsushita Electric Ind Co Ltd | Integrated fan cooling system |
| CN2402848Y (en) * | 1999-08-03 | 2000-10-25 | 梁德 | Radiating fan |
| CN2445118Y (en) * | 2000-10-09 | 2001-08-29 | 元山科技工业股份有限公司 | Heat-sinking fan |
| JP2003003998A (en) * | 2001-06-13 | 2003-01-08 | Taida Electronic Ind Co Ltd | Sirocco type heat radiator |
| CN2544123Y (en) * | 2002-04-27 | 2003-04-09 | 李国良 | bidirectional inlet fan |
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|---|---|
| CN1553059A (en) | 2004-12-08 |
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Granted publication date: 20070411 Termination date: 20120605 |