CN104564816A - Fan blade and electric fan with fan blade - Google Patents
Fan blade and electric fan with fan blade Download PDFInfo
- Publication number
- CN104564816A CN104564816A CN201310514402.9A CN201310514402A CN104564816A CN 104564816 A CN104564816 A CN 104564816A CN 201310514402 A CN201310514402 A CN 201310514402A CN 104564816 A CN104564816 A CN 104564816A
- Authority
- CN
- China
- Prior art keywords
- blade
- tip end
- blade body
- fan
- whirlpool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/307—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the tip of a rotor blade
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan blade and an electric fan with the fan blade. The fan blade comprises a blade body, wherein the blade body is provided with a suction surface and a pressure surface; the first end of the blade body is connected with a rotary shaft; the second end of the blade body is a tip end; a vortex blockage part for blocking the formation of vortex is arranged on the tip end of the blade body. According to the fan blade provided by the invention, the vortex blockage part for blocking the formation of the vortex is arranged on the tip end of the blade body, and can be utilized to prevent airflow on the pressure surface of the blade from flowing to the suction surface, so that the generation of the vortex is inhibited, the vibration of the blade is reduced, and the loss and the vibration noise of air volume during the rotation process of the blade are reduced.
Description
Technical field
The present invention relates to indoor temperature control device field, especially, relate to a kind of fan blade.In addition, the invention still further 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, continual curvature, 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, due to the pressure difference of pressure side and suction surface, air-flow can flow from the pressure side that pressure is slightly high to the suction surface that pressure is slightly low, thus formation air flow swirl, such air flow swirl, causes runner to narrow and makes the negotiable smaller volume of air on the one hand, increase wind loss, cause increasing pneumatic noise on the other hand.
Summary of the invention
The object of the invention is the electric fan providing a kind of fan blade and have this blade, the technical problem large with the wind loss solving existing electric fan, noise is large.
To achieve these goals, the invention 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, second end of blade body is blade tip end, and the blade tip end of blade body is provided with the whirlpool blocking unit formed for blocking whirlpool.
Further, whirlpool blocking unit comprises: the first whirlpool blocking unit, bends in vertical state along the edge of the blade tip end of blade body to the suction surface of blade body.
Further, the external boundary of the first whirlpool blocking unit forms the first protruding arc curve, first arc curve is divided into the 3rd section of the first paragraph of arc, straight second segment and arch successively from the leading edge of blade body to trailing edge, point maximum with the distance of the external boundary of blade body blade tip end on the first arc curve is positioned on the 3rd section of arch.
Further, the length of the boundary line between the terminal that extends to the leading edge of blade body to blade tip end from the starting point of the first arc curve of the blade tip end of blade body is 10mm; The length of the boundary line between the terminal that the blade tip end of blade body extends to the trailing edge of blade body to blade tip end from the terminal of the first arc curve is 10mm.
Further, whirlpool blocking unit also comprises: the second whirlpool blocking unit, bends in vertical state along the edge of the blade tip end of blade body to the pressure side of blade body.
Further, the external boundary of the second whirlpool blocking unit forms the second protruding arc curve, and the ultimate range between the boundary line of the second arc curve and blade tip end is less than the ultimate range between the boundary line of the first arc curve and blade tip end.
Further, the ultimate range between the boundary line of the first arc curve and blade tip end be blade body first end to blade tip end maximum radial distance 1/7th.
Further, the ultimate range between the boundary line of the second arc curve and blade tip end be blade body first end to blade tip end maximum radial distance 1/15th.
According to another aspect of the present invention, additionally provide a kind of electric fan, have multi-disc fan blade, this fan blade is above-mentioned fan blade.
The present invention has following beneficial effect:
The invention provides a kind of fan blade and there is 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, second end of blade body is blade tip end, and the blade tip end of blade body is provided with the whirlpool blocking unit formed for blocking whirlpool.Fan blade provided by the invention is owing to being provided with the whirlpool blocking unit formed for blocking whirlpool at the blade tip end of blade body, the air-flow utilizing this whirlpool blocking unit can intercept blade pressure surface flows to suction surface, thus 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 present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that the fan leaf bobbin of the preferred embodiment of the present invention measures intention; And
Fig. 2 is the fan blade horizontal positioned structural representation of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As depicted in figs. 1 and 2, one aspect of the present invention provides a kind of fan blade, and 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 suppressing eddy current, the blade tip end of blade body 10 is provided with the whirlpool blocking unit 30 formed for blocking whirlpool.
The formation of whirlpool is that the air-flow on the surface causing pressure large due to the pressure difference between suction surface A and pressure side C is to the little surface flowing of pressure, air-flow is walked around blade tip end from pressure side C and is formed whirlpool to suction surface A flowing, so, whirlpool blocking unit 30 can be arranged on the path of air current flow, thus block the generation of whirlpool.Whirlpool blocking unit 30 is positioned at blade tip, i.e. blade outermost part.
As a kind of concrete mode of execution, whirlpool blocking unit 30 comprises the first whirlpool blocking unit 31, and this first whirlpool blocking unit 31 bends in vertical state along the edge of the blade tip end of blade body 10 to the suction surface A of blade body 10.Why saying and bend in vertical state, is because the first whirlpool blocking unit 31 bends in 90 ° or can close to 90 ° to the suction surface A of blade body 10.Owing to being camber line when air-flow flows from pressure side C to suction surface A, if the angle between the first whirlpool blocking unit 31 and suction surface A is greater than 90 °, such as 135 °, the edge that so air-flow will walk around blade tip end along plane of inclination flow on suction surface A again, or larger whirlpool can be formed, and the first whirlpool blocking unit 31 is designed to suction surface A in vertical state, then can stop the most of air-flow flowing to suction surface A, block the formation of whirlpool.
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 unit 31 forms the first protruding arc curve, first arc curve is divided into the 3rd section of the first paragraph of arc, straight second segment and arch successively from the leading edge of blade body 10 to trailing edge, point maximum with the distance of the external boundary of blade body 10 blade tip end on the first arc curve is positioned on the 3rd section of arch.So, the part of the first arc curve to the trailing edge near blade body 10 from end points is protruding gradually, protruding height is ascending again to little to end point by starting point, in beginning, projecting portion height is zero, after this convex portion uprises gradually, diminish not only after arriving that point the highest until at the end of height but also be zero, overall embayment blade structure.
Development change is gradually grown out of nothing greatly in the region forming whirlpool from the leading edge of blade to trailing edge.The length of the boundary line between the terminal that the blade tip end of blade body 10 extends to the leading edge of blade body 10 to blade tip end from the starting point of the first arc curve is 10mm; The length of the boundary line between the terminal that the blade tip end of blade body 10 extends to the trailing edge of blade body 10 to blade tip end from the terminal of the first arc curve is 10mm.
In order to play the effect better blocking whirlpool, whirlpool blocking unit 30 also comprises: the second whirlpool blocking unit 33, bends in vertical state along the edge of the blade tip end of blade body 10 to the pressure side C of blade body 10.The external boundary of the second whirlpool blocking unit 33 forms the second protruding arc curve, and the ultimate range between the boundary line of the second arc curve and blade tip end is less than the ultimate range between the boundary line of the first arc curve and blade tip end.In the present embodiment, the first end of to be the first end of blade body 10 to the ultimate range between 1/7th, second arc curve and the boundary line of blade tip end of the maximum radial distance of blade tip end the be blade body 10 of the ultimate range between the boundary line of the first arc curve and blade tip end to blade tip end maximum radial distance 1/15th.
In addition, according to another aspect of the present invention, additionally 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 fan blade provided by the invention can suppress blade tip whirlpool to produce, and improves air quantity, ensures noise level.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
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 unit (30) formed for blocking whirlpool.
2. fan blade according to claim 1, is characterized in that, described whirlpool blocking unit (30) comprising:
First whirlpool blocking unit (31), bends in vertical state along the edge of the blade tip end of described blade body (10) to the suction surface (A) of described blade body (10).
3. fan blade according to claim 2, is characterized in that,
The external boundary of described first whirlpool blocking unit (31) forms the first protruding arc curve, described first arc curve is divided into the 3rd section of the first paragraph of arc, straight second segment and arch successively from the leading edge of described blade body (10) to trailing edge, point maximum with the distance of the external boundary of described blade body (10) blade tip end on described first arc curve is positioned on the 3rd section of described arch.
4. fan blade according to claim 3, is characterized in that,
The blade tip end of described blade body (10) from the starting point of described first arc curve to the leading edge of described blade body (10) to the terminal that described blade tip end extends between the length of boundary line be 10mm;
The blade tip end of described blade body (10) from the terminal of described first arc curve to the trailing edge of described blade body (10) to the terminal that described blade tip end extends between the length of boundary line be 10mm.
5. the fan blade according to any one of claim 2 to 4, is characterized in that, described whirlpool blocking unit (30) also comprises:
Second whirlpool blocking unit (33), bends in vertical state along the edge of the blade tip end of described blade body (10) to the pressure side (C) of described blade body (10).
6. fan blade according to claim 5, is characterized in that,
The external boundary of described second whirlpool blocking unit (33) forms the second protruding arc curve, and the ultimate range between the boundary line of described second arc curve and described blade tip end is less than the ultimate range between the boundary line of described first arc curve and described blade tip end.
7. fan blade according to claim 6, is characterized in that,
Ultimate range between the boundary line of described first arc curve and described blade tip end be described blade body (10) described first end to described blade tip end maximum radial distance 1/7th.
8. fan blade according to claim 7, is characterized in that,
Ultimate range between the boundary line of described second arc curve and described blade tip end be described blade body (10) described first end to described blade tip end maximum radial distance 1/15th.
9. an electric fan, has multi-disc fan blade, it is characterized in that, the fan blade of described fan blade according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514402.9A CN104564816A (en) | 2013-10-25 | 2013-10-25 | Fan blade and electric fan with fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310514402.9A CN104564816A (en) | 2013-10-25 | 2013-10-25 | Fan blade and electric fan with fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564816A true CN104564816A (en) | 2015-04-29 |
Family
ID=53081664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310514402.9A Pending CN104564816A (en) | 2013-10-25 | 2013-10-25 | Fan blade and electric fan with fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564816A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697416A (en) * | 2016-03-24 | 2016-06-22 | 北京小米移动软件有限公司 | Fan blades and fan device |
| CN107191411A (en) * | 2017-03-24 | 2017-09-22 | 奇鋐科技股份有限公司 | Fan structure |
| CN109424584A (en) * | 2017-09-04 | 2019-03-05 | 建准电机工业股份有限公司 | Vane flow guiding device |
| CN113123979A (en) * | 2019-12-31 | 2021-07-16 | 广东美的白色家电技术创新中心有限公司 | Outdoor machine of air conditioner |
| CN113847275A (en) * | 2021-08-30 | 2021-12-28 | 珠海格力电器股份有限公司 | Wing type axial flow fan blade and air conditioner external unit |
-
2013
- 2013-10-25 CN CN201310514402.9A patent/CN104564816A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697416A (en) * | 2016-03-24 | 2016-06-22 | 北京小米移动软件有限公司 | Fan blades and fan device |
| CN107191411A (en) * | 2017-03-24 | 2017-09-22 | 奇鋐科技股份有限公司 | Fan structure |
| CN109424584A (en) * | 2017-09-04 | 2019-03-05 | 建准电机工业股份有限公司 | Vane flow guiding device |
| CN113123979A (en) * | 2019-12-31 | 2021-07-16 | 广东美的白色家电技术创新中心有限公司 | Outdoor machine of air conditioner |
| CN113847275A (en) * | 2021-08-30 | 2021-12-28 | 珠海格力电器股份有限公司 | Wing type axial flow fan blade and air conditioner external unit |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |