CN107120294B - Fan wheel structure of heat dissipation fan - Google Patents
Fan wheel structure of heat dissipation fan Download PDFInfo
- Publication number
- CN107120294B CN107120294B CN201610104245.8A CN201610104245A CN107120294B CN 107120294 B CN107120294 B CN 107120294B CN 201610104245 A CN201610104245 A CN 201610104245A CN 107120294 B CN107120294 B CN 107120294B
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- China
- Prior art keywords
- ring cover
- grooves
- blades
- flange portion
- heat dissipation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a fan wheel structure of a heat radiation fan, which comprises a fan blade group and a hub, wherein the fan blade group is provided with a plurality of blades and a ring cover body, the ring cover body and the rear ends of the plurality of blades are combined into a whole in an integral coating and ejection mode, or the ring cover body and the rear ends of the plurality of blades are combined into a whole by laser welding, and the ring cover body combined with the plurality of blades is combined with the corresponding hub into a whole.
Description
Technical Field
The present invention relates to a heat dissipation assembly, and more particularly to a fan wheel structure of a heat dissipation fan.
Background
The fan is a common part in the field of electronic heat dissipation, and is usually made of metal or plastic, and when the blades are made of plastic, the blades are made by an injection molding mode, so that the thickness of the blades is usually more than 0.3mm, and the blades cannot be too thin due to the characteristics of the plastic material, so as to avoid wind resistance fracture when the blades cannot bear rotation. Therefore, the problem of reducing the thickness of the blade to make it an ultra-thin blade with considerable strength and how to combine the ultra-thin blade with the hub of the fan is the effort of those skilled in the art.
disclosure of Invention
Therefore, to effectively solve the above problems, the present invention provides a fan wheel structure of a heat dissipation fan, which combines the ring cover and the ultra-thin blades to increase the fixing strength of the blades.
Another objective of the present invention is to provide a blade set, in which the blades are not directly connected to the hub, but are connected to the hub through a ring cover, so as to fix a plurality of blades around the hub, thereby improving the problem of easy breakage of the connection portion caused by the conventional direct welding or clamping connection between the blades and the hub.
To achieve the above object, the present invention provides a fan wheel structure of a heat dissipation fan, comprising: a fan blade set having a plurality of blades and a ring cover, wherein the blades have a front end and a rear end, the ring cover is integrally coated, injection-molded and combined with the rear ends of the blades, and the ring cover is provided with a plurality of combination parts formed on one side of the ring cover; and a hub having a flange portion, a plurality of through holes, a top wall and a side wall extending downward along the periphery of the top wall, wherein the flange portion is formed by the side wall protruding outward and is connected with the corresponding ring cover body, and the through holes are formed on the flange portion in a penetrating manner and are connected with the corresponding combining portions into a whole.
Preferably, the ring cover has a plurality of grooves, a top side and a bottom side, the grooves are formed on the bottom side of the ring cover at intervals, the rear ends of the vanes are located between the grooves, and the combining portions are formed on the bottom side corresponding to the positions between the grooves and the inner peripheral edge of the ring cover.
Preferably, the ring cover has a plurality of covering portions, the ring cover is integrally formed with the covering portions, each covering portion is located between each two adjacent grooves, the blades have at least one hollow opening, the openings penetrate through the rear ends of the blades, and the covering portions are integrally formed outside the rear ends of the blades and in the openings.
Preferably, the flange portion has a plurality of notches, the notches are formed by being recessed along the outer periphery of the flange portion, a convex tooth is defined between each two adjacent notches, the convex teeth are embedded in the corresponding grooves, and the coating portions are accommodated in the corresponding notches.
Preferably, the connecting manner of the combination parts and the through holes is selected from a riveting connection, a screw-lock connection or a snap-in connection.
The present invention further provides a fan wheel structure of a heat dissipation fan, comprising: a fan blade set having a plurality of blades and a ring cover, the blades having a front end and a rear end, the ring cover having a plurality of scarf grooves and a plurality of combination portions, the scarf grooves being formed on a side edge of the ring cover, the scarf grooves being scarf-jointed with the rear ends of the corresponding blades, at least one fusion portion being formed between the rear ends of the blades and the contact portion of one side of the ring cover adjacent to the scarf grooves, the fusion portion connecting the rear ends of the blades and one side of the ring cover adjacent to the scarf grooves, and the combination portions being formed on one side of the ring cover and adjacent to the scarf grooves; and a hub having a flange portion, a plurality of through holes, a top wall and a side wall extending downward along the periphery of the top wall, wherein the flange portion is formed by the side wall protruding outward and is connected with the corresponding ring cover body, and the through holes are formed on the flange portion in a penetrating manner and are connected with the corresponding combining portions into a whole.
Preferably, the annular cover has a plurality of grooves, a top side and a bottom side, and a plurality of protrusions, the grooves are formed on the bottom side of the annular cover at intervals, the engagement grooves are located between the grooves, the combination portions are formed on the bottom side corresponding to the positions between the grooves and the inner peripheral edge of the annular cover, the protrusions are formed by protruding upward from two sides of each engagement groove, and each protrusion is located between each two grooves.
Preferably, the flange portion has a plurality of notches, the notches are formed by being recessed along the outer periphery of the flange portion, a convex tooth is defined between each two adjacent notches, the convex teeth are embedded in the corresponding notches, and the protruding portions are accommodated in the corresponding notches.
Preferably, the combination portions are connected to the through holes by a riveting joint, a screwing joint or a scarf joint.
Preferably, the welding portion is formed by laser welding the rear ends of the vanes to the side of the ring cover adjacent to the engagement grooves.
In one embodiment, the ring cover has a plurality of grooves, a top side and a bottom side, the grooves are formed on the bottom side of the ring cover at intervals, the rear ends of the vanes are located between the grooves, and the combining portions are formed on the bottom side corresponding to the positions between the grooves and the inner peripheral edge of the ring cover.
In one embodiment, the ring cover has a plurality of covering portions, the ring cover is integrally formed with the covering portions, each covering portion is located between each two adjacent grooves, the blades have at least one hollow opening, the openings penetrate through the rear ends of the blades, and the covering portions are integrally formed outside the rear ends of the blades and in the openings.
In one embodiment, the flange portion has a plurality of notches formed along an outer periphery of the flange portion, and a protruding tooth is defined between each two adjacent notches, the protruding teeth are embedded in the corresponding notches, and the covering portions are received in the corresponding notches.
In one embodiment, the combination portions are connected to the through holes by a riveting joint, a locking joint or a scarf joint.
in one embodiment, the ring cover has a plurality of grooves, a top side and a bottom side, and a plurality of protrusions, the grooves are formed on the bottom side of the ring cover at intervals, the engaging grooves are located between the grooves, the combining portions are formed on the bottom side corresponding to the positions between the grooves and the inner peripheral edge of the ring cover, the protrusions are formed by protruding upward from two sides of each engaging groove, and each protrusion is located between every two grooves.
In one embodiment, the rear ends of the blades are in contact with the scarf grooves to form the welds by laser welding.
Drawings
FIG. 1A is an exploded perspective view of a first embodiment of the present invention;
FIG. 1B is an assembled perspective view of the first embodiment of the present invention;
FIG. 1C is a perspective view of a fan blade set according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a first embodiment of the present invention with a blade integrally wrapped around the shroud;
FIG. 3 is a perspective view of a blade according to a first embodiment of the present invention;
FIG. 4A is a partially cut-away perspective view of a fan wheel according to a first embodiment of the present invention;
FIG. 4B is an enlarged, partial left side view of the impeller of FIG. 4A according to the first embodiment of the present invention;
FIG. 4C is an enlarged partial view of the right side of the impeller shown in FIG. 4A according to the first embodiment of the present invention;
FIG. 5A is an exploded perspective view of a second embodiment of the present invention;
FIG. 5B is an assembled perspective view of a second embodiment of the present invention;
FIG. 5C is a perspective view of a fan blade assembly according to a second embodiment of the present invention;
FIG. 6A is a schematic view of the relationship between the rear end of the vane and the protruding portion of the ring cover according to the second embodiment of the present invention;
FIG. 6B is a schematic view of the rear end of the vane of the second embodiment of the present invention inserted into the engagement groove and laser welded together;
FIG. 7A is a partially cut-away perspective view of a fan wheel according to a second embodiment of the present invention;
fig. 7B is a partially enlarged left side view of the fan wheel of fig. 7A according to the second embodiment of the present invention.
Detailed Description
Detailed description of the preferred embodiments
The above objects of the present invention, together with the structural and functional features thereof, are best understood from the following description of the preferred embodiments when read in connection with the accompanying drawings.
fig. 1A and 1B are schematic exploded and assembled views of a first embodiment of the present invention, with reference to fig. 3. The present invention provides a fan wheel structure of a heat dissipation fan, such as a centrifugal fan (not shown). The fan wheel structure 1 includes a fan blade set 11 and a hub 15, the fan blade set 11 has a plurality of blades 111 and a ring cover 113, the blades 111 can be made of a metal material with good ductility and strength, such as aluminum, aluminum alloy, steel, iron or titanium alloy, but the invention is not limited thereto. The blades 111 have a front end 1111, a rear end 1112 and at least one hollow opening 1114, the opening 1114 penetrates the rear end 1112 of the blades 111 to increase the bonding strength between the blades 111 and the ring cover 113.
The ring cover 113 is integrally formed at the rear ends 1112 of the blades 111 (as shown in fig. 2) by injection molding, that is, the rear ends 1112 of the blades 111 are integrally formed in the ring cover 113 while the ring cover 113 is injection molded in a mold, so that the ring cover 113 and the blades 111 are integrally combined, thereby effectively preventing the blades 111 of the fan blade set 11 from being thrown out due to centrifugal force during the operation of the hub 15. In addition, the blade 111 of the present invention is made of metal by stamping, and the thickness of the blade 111 is preferably less than 0.15 millimeters (mm) (which can increase the number of blades), while the hub 15 is made of metal by stamping, and the ring cover 113 is made of plastic by injection molding.
referring to fig. 1A, 1C and 4A, the ring cover 113 has a plurality of combining portions 1136, a plurality of cladding portions 1134, a plurality of grooves 1131, a top side 1132 and a bottom side 1133, the grooves 1131 are formed on the bottom side 1133 of the ring cover 113 at intervals, the rear ends 1112 of the blades 111 are located between the grooves 1131, the combining portions 1136 are formed on one side of the ring cover 113, the combining portions 1136 of the present embodiment are formed on the bottom side 1133 corresponding to the grooves 1131 and the inner peripheral edge of the ring cover 113, and the combining portions 1136 are rivet columns, and may be a bolt or a boss when in a specific application. The cladding portions 1134 are a part of the ring cover 113 itself, the cladding portions 1134 are integrally formed by plastic injection molding along with the ring cover 113, the cladding portions 1134 are integrally formed by cladding the outer sides of the back ends 1112 of the blades 111 and the openings 1114 (as shown in fig. 4A and 4B), and each cladding portion 1134 is located between each two adjacent grooves 1131.
in addition, the hub 15 has a flange 151, a plurality of through holes 153, a top wall 154 and a side wall 155 extending downward along the periphery of the top wall 154, the flange 151 is formed by the side wall 155 protruding outward, in this embodiment, the flange 151 is formed by the outer periphery adjacent to the bottom end of the side wall 155 protruding outward horizontally, and is connected to the corresponding ring cover 113. The flange 151 is provided with a plurality of notches 1511, the notches 1511 are formed by being recessed along the outer periphery of the flange 151, a convex tooth 1512 is defined between each two adjacent notches 1511, the convex teeth 1512 are embedded with the grooves 1131 corresponding to the ring cover 113, and the cladding portions 1134 are accommodated and combined in the corresponding notches 1511. The through holes 153 are formed on the flange 151 and are integrally connected to the corresponding assembling portions 1136, and the through hole 153 of the present embodiment is a rivet hole, and can be a screw hole or a fitting hole during implementation. Therefore, the assembling portions 1136 penetrate through the corresponding through holes 153, and are fastened and riveted on the flange portion 151 by means of heat staking or cold staking (as shown in fig. 4A and 4C), so that the fan blade assembly 11 and the hub 15 are integrated into a whole to form the fan wheel structure 1. In alternative embodiments, the combination portions 1136 and the through holes 153 can be connected by a screw-lock connection or a snap-in connection.
therefore, the blades 111 with a thinner thickness are integrally wrapped in the wrapping portion 1134 of the ring cover 113 and integrated with the opposite hub 15, so that the blades 111 are fixed around the hub 15, thereby effectively enhancing the bonding strength between the blades 111 and the hub 15 and improving the problem that the connection is easily broken due to the direct welding or clamping connection between the conventional blades and the hub.
Please refer to fig. 5A and 5B, which are exploded and assembled perspective views of a second embodiment of the present invention, with reference to fig. 5C. The fan wheel structure 1 of the present embodiment includes a fan blade assembly 11 and a hub 15, the fan blade assembly 11 has a plurality of blades 111 and a ring cover 113, the blades 111 can be made of a metal material with ductility and excellent strength, such as an aluminum material, an aluminum alloy material, a steel material, an iron material or a titanium alloy material, but the invention is not limited thereto. The blades 111 have a front end 1111 and a rear end 1112. The ring cover 113 has a plurality of engagement grooves 1135, a plurality of combination portions 1136, a plurality of grooves 1131, a top side 1132 and a bottom side 1133 and a plurality of protrusions 1137, the engagement grooves 1135 are formed on a side edge of the ring cover 113, and the engagement grooves 1135 are engaged with the rear ends 1112 of the corresponding blades 111 (as shown in fig. 5C and 6A).
at least one welded portion 13 is formed between the rear end 1112 of each of the blades 111 and the side of the ring cover 113 adjacent to the corresponding one of the engagement grooves 1135, the welded portion 13 connects the rear end 1112 of each of the blades 111 and the side of the ring cover 113 adjacent to the corresponding one of the engagement grooves 1135, and the welded portion 13 is formed by welding the rear end 1112 of each of the blades 111 and the side of the ring cover 113 adjacent to the corresponding one of the engagement grooves 1135 by laser processing (such as laser welding or laser welding) (as shown in fig. 5B and 6B) so that the ring cover 113 and the rear end 1112 of each of the blades 111 are integrally welded together, thereby enhancing the structural strength and the bonding strength of the two.
The blade 111 of the present invention is made of metal by stamping, and the thickness of the blade 111 is preferably less than 0.15 mm, and the hub 15 is made of metal by stamping, and the ring cover 113 is made of metal by stamping. The grooves 1131 are formed on the bottom side 1133 of the ring cover 113 at intervals, the engagement grooves 1135 are located between the grooves 1131, the combination portions 1136 are formed on one side of the ring cover 113 and adjacent to the engagement grooves 1135, the combination portions 1136 of the present embodiment are formed on the bottom side 1133 corresponding to the grooves 1131 and the inner peripheral edge of the ring cover 113, and the combination portion 1136 is a rivet, and may be a bolt or a stud when applied. The protrusions 1137 are formed by protruding upward adjacent to both sides of each engagement groove 1135, and each protrusion 1137 is located between each two grooves 1131.
moreover, the structure and the linking relationship of the hub 15 of the present embodiment having a flange portion 151, a plurality of through holes 153, a top wall 154 and a side wall 155 are substantially the same as those of the flange portion 151, the plurality of through holes 153, the top wall 154 and the side wall 155 of the hub 15 of the first embodiment, and therefore, the description thereof is omitted. The protruding portions 1137 of the present embodiment are accommodated in the corresponding recesses 1511, and the through hole 153 of the present embodiment is a rivet hole, and can be a screw hole or a fitting hole. Therefore, the assembling portions 1136 penetrate through the through holes 153 on the flange portion 151 and are fastened and riveted on the flange portion 151 by heat staking or cold staking (as shown in fig. 7A and 7B), so that the fan blade assembly 11 and the hub 15 are integrated to form the fan wheel structure 1. In alternative embodiments, the combination portions 1136 and the through holes 153 can be connected by a screw-lock connection or a snap-in connection.
Therefore, the blades 111 with thinner thickness are inserted into the ring cover 113 and welded together by laser, and then integrated with the opposite hub 15, so that the blades 111 are fixed around the hub 15, thereby effectively enhancing the bonding strength between the blades 111 and the hub 15, and improving the problem of easy breakage of the connection part caused by direct welding or clamping connection between the conventional blades and the hub.
However, the above-described preferred embodiments of the present invention are only examples of the present invention, and all changes in the method, shape, structure and apparatus using the above-described method, shape, structure and apparatus of the present invention are all included in the scope of the claims of the present invention.
Claims (10)
1. A fan wheel structure of a heat dissipation fan is characterized by comprising:
A fan blade set, which is provided with a plurality of blades and a ring cover body, wherein the plurality of blades are made of metal materials, the plurality of blades are provided with a front end and a rear end, the ring cover body is integrally coated, injected and formed and combined with the rear ends of the plurality of blades, and the ring cover body is provided with a plurality of combination parts formed on one side of the ring cover body; and
a hub having a flange portion, a plurality of through holes, a top wall and a side wall extending downward along the periphery of the top wall, wherein the flange portion is formed by the side wall protruding outward and is connected with the corresponding ring cover body, and the plurality of through holes are formed on the flange portion in a penetrating manner and are connected with the corresponding plurality of combination portions into a whole.
2. The impeller structure of heat dissipation fan as claimed in claim 1, wherein the ring cover has a plurality of grooves, a top side and a bottom side, the plurality of grooves are formed on the bottom side of the ring cover at intervals, the rear ends of the plurality of blades are located between the plurality of grooves, and the plurality of combining portions are formed on the bottom side corresponding to the positions between the plurality of grooves and the inner peripheral edge of the ring cover.
3. The impeller structure of heat dissipation fan as claimed in claim 2, wherein the ring cover has a plurality of covering portions, the ring cover and the plurality of covering portions are integrally formed, and each covering portion is located between each two adjacent grooves, the plurality of blades have at least one hollow opening, the opening penetrates through the rear ends of the plurality of blades, and the plurality of covering portions are integrally formed outside the rear ends of the plurality of blades and in the opening.
4. The impeller structure of heat dissipation fan as claimed in claim 3, wherein the flange portion has a plurality of notches formed along the outer periphery of the flange portion, and a protruding tooth is defined between each two adjacent notches, the protruding tooth is embedded in the corresponding notches, and the covering portions are received in the corresponding notches.
5. the impeller structure of heat dissipation fan as claimed in claim 1, wherein the connection manner of the plurality of assembling portions and the plurality of through holes is selected from a riveting connection, a screw-locking connection or a snap-in connection.
6. A fan wheel structure of a heat dissipation fan is characterized by comprising:
a fan blade set, which has a plurality of blades and a ring cover, the plurality of blades are made of metal, the plurality of blades have a front end and a rear end, the ring cover has a plurality of scarf grooves and a plurality of combination parts, the plurality of scarf grooves are formed on one side edge of the ring cover, the plurality of scarf grooves are scarf-jointed with the rear end corresponding to the plurality of blades, at least one fusion part is formed between the rear end of the plurality of blades and the contact part of one side of the ring cover adjacent to the plurality of scarf grooves, the fusion part connects the rear end of the plurality of blades and one side of the ring cover adjacent to the plurality of scarf grooves, and the plurality of combination parts are formed on one side of the ring cover and adjacent to the plurality of scarf grooves; and
A hub having a flange portion, a plurality of through holes, a top wall and a side wall extending downward along the periphery of the top wall, wherein the flange portion is formed by the side wall protruding outward and is connected with the corresponding ring cover body, and the plurality of through holes are formed on the flange portion in a penetrating manner and are connected with the corresponding plurality of combination portions into a whole.
7. The impeller structure of heat dissipation fan as claimed in claim 6, wherein the ring cover has a plurality of grooves, a top side and a bottom side, and a plurality of protrusions, the plurality of grooves are formed on the bottom side of the ring cover at intervals, the plurality of engagement grooves are located between the plurality of grooves, the plurality of combination portions are formed on the bottom side corresponding to the space between the plurality of grooves and the inner peripheral edge of the ring cover, the plurality of protrusions are formed by protruding upward from two sides of each of the engagement grooves, and each of the protrusions is located between every two grooves.
8. the impeller structure of heat dissipation fan as claimed in claim 7, wherein the flange portion has a plurality of notches formed along the outer periphery of the flange portion, and a protrusion is defined between each two adjacent notches, the protrusion is engaged with the corresponding notches, and the protrusions are received in the corresponding notches.
9. the impeller structure of heat dissipation fan as claimed in claim 6, wherein the combination portions and the through holes are connected by a riveting connection, a screwing connection or an embedding connection.
10. the impeller structure of heat dissipating fan as claimed in claim 6, wherein the welding portion is formed by laser welding the rear ends of the plurality of blades to a side of the ring cover adjacent to the plurality of engaging grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104245.8A CN107120294B (en) | 2016-02-25 | 2016-02-25 | Fan wheel structure of heat dissipation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104245.8A CN107120294B (en) | 2016-02-25 | 2016-02-25 | Fan wheel structure of heat dissipation fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107120294A CN107120294A (en) | 2017-09-01 |
| CN107120294B true CN107120294B (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610104245.8A Active CN107120294B (en) | 2016-02-25 | 2016-02-25 | Fan wheel structure of heat dissipation fan |
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| CN (1) | CN107120294B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915161B (en) * | 2021-09-26 | 2023-07-21 | 联想(北京)有限公司 | Fan, electronic equipment and manufacturing method of fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493762Y (en) * | 2001-07-31 | 2002-05-29 | 建准电机工业股份有限公司 | Fan wheel |
| CN102828974A (en) * | 2011-06-15 | 2012-12-19 | 通用电气公司 | System for adjusting characteristics of fan |
| CN103362859A (en) * | 2012-03-27 | 2013-10-23 | 富瑞精密组件（昆山）有限公司 | Fan blade structure and method for manufacturing same |
| CN206206202U (en) * | 2016-02-25 | 2017-05-31 | 奇鋐科技股份有限公司 | The fan wheel structure of radiator fan |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8202055B2 (en) * | 2004-05-07 | 2012-06-19 | Delta Electronics, Inc. | Fan and impeller |
| FR2940353B1 (en) * | 2008-12-23 | 2011-02-11 | Snecma | MOBILE WHEEL OF TURBOMACHINE A AUBES IN COMPOSITE MATERIAL. |
| CN103423194B (en) * | 2012-05-22 | 2017-06-06 | 富瑞精密组件（昆山）有限公司 | Flabellum |
-
2016
- 2016-02-25 CN CN201610104245.8A patent/CN107120294B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493762Y (en) * | 2001-07-31 | 2002-05-29 | 建准电机工业股份有限公司 | Fan wheel |
| CN102828974A (en) * | 2011-06-15 | 2012-12-19 | 通用电气公司 | System for adjusting characteristics of fan |
| CN103362859A (en) * | 2012-03-27 | 2013-10-23 | 富瑞精密组件（昆山）有限公司 | Fan blade structure and method for manufacturing same |
| CN206206202U (en) * | 2016-02-25 | 2017-05-31 | 奇鋐科技股份有限公司 | The fan wheel structure of radiator fan |
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| Publication number | Publication date |
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| CN107120294A (en) | 2017-09-01 |
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