CN203584899U - Fan blade and electric fan provided with same - Google Patents
Fan blade and electric fan provided with same Download PDFInfo
- Publication number
- CN203584899U CN203584899U CN201320664083.5U CN201320664083U CN203584899U CN 203584899 U CN203584899 U CN 203584899U CN 201320664083 U CN201320664083 U CN 201320664083U CN 203584899 U CN203584899 U CN 203584899U
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- blade
- tip end
- blocking
- blade body
- whirlpool
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- 230000000903 blocking effect Effects 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
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Abstract
The utility model provides fan blades and an electric fan provided with the same. Each fan blade comprise a blade body, wherein each blade body has a suction surface and a pressure surface, the first end of each blade body is connected with a rotating shaft, the second end of each blade body is a blade tip end, and a vortex blocking part used for blocking the formation of a vortex is arranged at the blade tip end of each blade body. According to the fan blade provided by the utility model, the vortex blocking parts used for blocking the formation of the vortex are arranged at the blade tip ends of the blade bodies, and the vortex blocking parts can be used for preventing airflow of the blade pressure surfaces from flowing toward the suction surfaces, so that the generation of the vortex can be suppressed, the blade vibration is reduced, and the air volume lose and the vibration noise in the process of the blade rotation can be reduced.
Description
Technical field
The utility model relates to indoor temperature control device field, especially, relates to a kind of fan blade.In addition, the utility model also relates to a kind of electric fan with said fans blade.
Background technique
In prior art, the fan blade of electric fan generally adopts smooth blades, curvature is continuous, the surface of whole blade just comprises traditional pressure side and suction surface, without special construction, blowing flow field is optimized, particularly at the blade tip of fan blade, pressure difference due to pressure side and suction surface, air-flow can flow to the slightly low suction surface of pressure from the slightly high pressure side of pressure, thereby form air-flow whirlpool, such air-flow whirlpool, causes runner to narrow down and makes the negotiable smaller volume of air on the one hand, increase wind loss, cause on the other hand having strengthened pneumatic noise.
Model utility content
The electric fan that the utility model object is to provide a kind of fan blade and has this blade, to solve the technical problem that wind loss is large, noise is large of existing electric fan.
To achieve these goals, the utility model provides a kind of fan blade, comprise: blade body, there is suction surface and pressure side, the first end of blade body is connected with rotating shaft, the second end of blade body is blade tip end, and the blade tip end of blade body is provided with the whirlpool blocking-up portion forming for blocking whirlpool.
Further, whirlpool blocking-up portion comprises: the first whirlpool blocking-up portion, the suction surface along the edge of the blade tip end of blade body to blade body bends in vertical state.
Further, the external boundary of the first whirlpool blocking-up portion forms the first arc curve of projection, the first arc curve is divided into the first paragraph of arc, straight second segment and the 3rd section of arch successively from the leading edge of blade body to trailing edge, on the first arc curve, be positioned on the 3rd section of arch with the point of the distance maximum of the external boundary of blade body blade tip end.
The length of the boundary line between the terminal that further, the blade tip end of blade body extends to blade tip end from starting point to the leading edge of blade body of the first arc curve is 10mm; The length of the boundary line between the terminal that the trailing edge of the blade tip end of blade body from the terminal of the first arc curve to blade body extends to blade tip end is 10mm.
Further, whirlpool blocking-up portion also comprises: the second whirlpool blocking-up portion, the pressure side along the edge of the blade tip end of blade body to blade body bends in vertical state.
Further, the external boundary of the second whirlpool blocking-up portion forms the second arc curve of projection, and the ultimate range between the second arc curve and the boundary line of blade tip end is less than the ultimate range between the first arc curve and the boundary line of blade tip end.
Further, the first end that the ultimate range between the first arc curve and the boundary line of blade tip end is blade body is to 1/7th of the maximum radial distance of blade tip end.
Further, the first end that the ultimate range between the second arc curve and the boundary line of blade tip end is blade body is to 1/15th of the maximum radial distance of blade tip end.
According to another aspect of the present utility model, a kind of electric fan is also provided, there is multi-disc fan blade, this fan blade is above-mentioned fan blade.
The utlity model has following beneficial effect:
The utility model provides a kind of fan blade and has had the electric fan of this blade, wherein, fan blade comprises: blade body, there is suction surface and pressure side, the first end of blade body is connected with rotating shaft, the second end of blade body is blade tip end, and the blade tip end of blade body is provided with the whirlpool blocking-up portion forming for blocking whirlpool.The fan blade that the utility model provides is because the blade tip end in blade body is provided with the whirlpool blocking-up portion forming for blocking whirlpool, the air-flow that utilizes this whirlpool blocking-up portion can intercept blade pressure surface flows to suction surface, thereby suppress the generation of whirlpool, reduce blade vibration, reduce loss and the vibration noise of air quantity in blade rotation process.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is that the fan leaf bobbin of the utility model preferred embodiment measures intention; And
Fig. 2 is the fan blade horizontal positioned structural representation of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As depicted in figs. 1 and 2, an aspect of the present utility model provides a kind of fan blade, this fan blade comprises the blade body 10 with suction surface A and pressure side C, and the first end of blade body 10 is connected with rotating shaft 20, and the second end of blade body 10 is blade tip end.In order to play the effect that suppresses eddy current, the blade tip end of blade body 10 is provided with the whirlpool blocking-up portion 30 forming for blocking whirlpool.
The formation of whirlpool is to flow to the little surface of pressure because the pressure difference between suction surface A and pressure side C causes the surperficial air-flow that pressure is large, air-flow is walked around blade tip end from pressure side C and is flowed and form whirlpool to suction surface A, so, whirlpool can be blocked to portion 30 and be arranged on the path of air current flow, thus the generation of blocking-up whirlpool.Whirlpool blocking-up portion 30 is positioned at blade tip, i.e. blade outermost part.
As a kind of concrete mode of execution, whirlpool blocking-up portion 30 comprises the first whirlpool blocking-up portion 31, and along the edge of the blade tip end of blade body 10, the suction surface A to blade body 10 bends in vertical state in this first whirlpool blocking-up portion 31.Why say in vertical state and bend, be because the first whirlpool blocking-up portion 31 to the suction surface A bending of blade body 10 be 90 ° or approach 90 ° can.While flowing from pressure side C to suction surface A due to air-flow, be camber line, if the angle between the first whirlpool blocking-up portion 31 and suction surface A is greater than 90 °, for example 135 °, the edge that air-flow will be walked around along plane of inclination blade tip end so flow on suction surface A again, or can form larger whirlpool, and by the first whirlpool blocking-up portion 31 be designed to suction surface A in vertical state, can stop the most of air-flow that flows to suction surface A, blocking-up whirlpool formation.
During blade rotation, the leading edge of blade is windward side, trailing edge lee face, air-flow can be close to trailing edge, the external boundary of the first whirlpool blocking-up portion 31 forms the first arc curve of projection, the first arc curve is divided into the first paragraph of arc, straight second segment and the 3rd section of arch successively from the leading edge of blade body 10 to trailing edge, on the first arc curve, be positioned on the 3rd section of arch with the point of the distance maximum of the external boundary of blade body 10 blade tip ends.So, the first arc curve starts to the part of the trailing edge near blade body 10 protruding gradually from end points, the height of projection is ascending again to little to end point by starting point, in beginning, projection height is zero, after this convex portion uprises gradually, arrives after the highest that point and to diminish not only until height but also be zero while finishing, whole one-tenth tulwar formula structure.
Development change is gradually grown out of nothing greatly from the leading edge of blade to trailing edge in the region that forms whirlpool.The length of the boundary line between the terminal that the blade tip end of blade body 10 extends to blade tip end from starting point to the leading edge of blade body 10 of the first arc curve is 10mm; The length of the boundary line between the terminal that the trailing edge of the blade tip end of blade body 10 from the terminal of the first arc curve to blade body 10 extends to blade tip end is 10mm.
In order to play the effect of better blocking-up whirlpool, whirlpool blocking-up portion 30 also comprises: the second whirlpool blocking-up portion 33, the pressure side C along the edge of the blade tip end of blade body 10 to blade body 10 bends in vertical state.The external boundary of the second whirlpool blocking-up portion 33 forms the second arc curve of projection, and the ultimate range between the second arc curve and the boundary line of blade tip end is less than the ultimate range between the first arc curve and the boundary line of blade tip end.In the present embodiment, ultimate range between the boundary line of the first arc curve and blade tip end is the first end of blade body 10 first end that is blade body 10 to the 1/7th, second arc curve and the ultimate range between the boundary line of blade tip end of the maximum radial distance of blade tip end to 1/15th of the maximum radial distance of blade tip end.
In addition, according to another aspect of the present utility model, also provide a kind of electric fan, this electric fan has multi-disc fan blade, and this fan blade is said fans blade.
The structure of the fan blade that the utility model provides can suppress blade tip vortex arising, improves air quantity, guarantees noise level.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a fan blade, comprising:
Blade body (10), has suction surface (A) and pressure side (C), and the first end of described blade body (10) is connected with rotating shaft (20), and the second end of described blade body (10) is blade tip end,
It is characterized in that,
The blade tip end of described blade body (10) is provided with the whirlpool blocking-up portion (30) forming for blocking whirlpool.
2. fan blade according to claim 1, is characterized in that, described whirlpool blocking-up portion (30) comprising:
The first whirlpool blocking-up portion (31), the suction surface (A) along the edge of the blade tip end of described blade body (10) to described blade body (10) bends in vertical state.
3. fan blade according to claim 2, is characterized in that,
The external boundary of described the first whirlpool blocking-up portion (31) forms the first arc curve of projection, described the first arc curve is divided into the first paragraph of arc, straight second segment and the 3rd section of arch successively from the leading edge of described blade body (10) to trailing edge, on described the first arc curve, be positioned on the 3rd section of described arch with the point of the distance maximum of the external boundary of described blade body (10) blade tip end.
4. fan blade according to claim 3, is characterized in that,
The length of the boundary line between the terminal that the blade tip end of described blade body (10) extends to described blade tip end from starting point to the leading edge of described blade body (10) of described the first arc curve is 10mm;
The blade tip end of described blade body (10) is 10mm from the length of the boundary line between the terminal terminal that extremely trailing edge of described blade body (10) extends to described blade tip end of described the first arc curve.
5. according to the fan blade described in claim 3 or 4, it is characterized in that, described whirlpool blocking-up portion (30) also comprises:
The second whirlpool blocking-up portion (33), the pressure side (C) along the edge of the blade tip end of described blade body (10) to described blade body (10) bends in vertical state.
6. fan blade according to claim 5, is characterized in that,
The external boundary of described the second whirlpool blocking-up portion (33) forms the second arc curve of projection, and the ultimate range between described the second arc curve and the boundary line of described blade tip end is less than the ultimate range between described the first arc curve and the boundary line of described blade tip end.
7. fan blade according to claim 6, is characterized in that,
Ultimate range between described the first arc curve and the boundary line of described blade tip end is that the described first end of described blade body (10) is to 1/7th of the maximum radial distance of described blade tip end.
8. fan blade according to claim 7, is characterized in that,
Ultimate range between described the second arc curve and the boundary line of described blade tip end is that the described first end of described blade body (10) is to 1/15th of the maximum radial distance of described blade tip end.
9. an electric fan, has multi-disc fan blade, it is characterized in that, described fan blade is the fan blade described in any one in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664083.5U CN203584899U (en) | 2013-10-25 | 2013-10-25 | Fan blade and electric fan provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320664083.5U CN203584899U (en) | 2013-10-25 | 2013-10-25 | Fan blade and electric fan provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584899U true CN203584899U (en) | 2014-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320664083.5U Expired - Lifetime CN203584899U (en) | 2013-10-25 | 2013-10-25 | Fan blade and electric fan provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584899U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265685A (en) * | 2014-09-29 | 2015-01-07 | 梁建平 | Fan blade |
| CN111946667A (en) * | 2020-07-28 | 2020-11-17 | 东风马勒热系统有限公司 | Fan with bent blades |
-
2013
- 2013-10-25 CN CN201320664083.5U patent/CN203584899U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265685A (en) * | 2014-09-29 | 2015-01-07 | 梁建平 | Fan blade |
| CN111946667A (en) * | 2020-07-28 | 2020-11-17 | 东风马勒热系统有限公司 | Fan with bent blades |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160309 Address after: 050000 252 Zhujiang Road, hi tech Development Zone, Hebei, Shijiazhuang Patentee after: SHIJIAZHUANG GREE SMALL HOUSEHOLD ELECTRICAL APPLIANCES Co.,Ltd. Address before: 519070 Guangdong city of Zhuhai Province Qianshan No. six Patentee before: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |