CN201739227U - Middle-bended axial-flow fan blade - Google Patents
Middle-bended axial-flow fan blade Download PDFInfo
- Publication number
- CN201739227U CN201739227U CN200920272124XU CN200920272124U CN201739227U CN 201739227 U CN201739227 U CN 201739227U CN 200920272124X U CN200920272124X U CN 200920272124XU CN 200920272124 U CN200920272124 U CN 200920272124U CN 201739227 U CN201739227 U CN 201739227U
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- Prior art keywords
- blade
- axial
- flow fan
- fan blade
- trough
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- Expired - Lifetime
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Abstract
A middle-bended axial-flow fan blade comprises a hub and a blade, wherein the blade comprises an outer circumference, a front edge and a rear edge. The axial-flow fan blade is characterized in that the blade is in the shape of a wave with at least one continuous wave crest and trough radially formed from the front edge to the rear edge. By virtue of the structure, high pressure on the inner edge is dispersed and prevented from transmitting to the outer edge, and eddies and turbulence caused by radial flow can be reduced, so as to improve the air flow environment, the static pressure and efficiency and lower the noise; besides, during mold production, general deformation problem in the present blade forming process is solved, so that the manufacturing cost is reduced.
Description
Technical field
The utility model relates to a kind of blade bending structure of turbine-type blast device, is meant a kind of axial-flow leaf blade of idle call especially.
Background technique
Present prior art, most at present axial-flow leaf flabellum main bodys all is to adopt the connecting mode of curve or orthodrome continuous transition to connect, this structure is when rotating operation, radially transfer to the low pressure place of outer rim at the high pressure of suction surface inner edge, this suction surface that is flowing in can produce disturbance, cause the generation of vortex, thereby reduce the rising of fan efficiency and noise.Because blade outer rim and trailing edge have certain influence to the generation of vortex with separating; The blade middle part is important too with the generation of vortex to flowing of air-flow.Another important reasons is because axial-flow leaf is in the mold process at present, and metaboly is commonplace, and controlled deformation has also just guaranteed fan performance and noise.
The model utility content
The purpose of this utility model is: a kind of axial-flow fan blade of blade middle part bending is provided, and it not only can reduce the generation of caused vortex of Radial Flow and flow-disturbing, and the flowing environment of improving air improves static pressure and efficient, reduces power and noise; And the general problem on deformation that exists in mold production, fan blade moulding can be prevented the time, thereby reduce manufacture cost.
The utility model is achieved in that a kind of axial-flow fan blade of blade middle part bending, comprise wheel hub and blade, blade comprises excircle, leading edge and trailing edge, and its special way is: described blade be arrange in the radial direction, at least one the continuous crest from the leading edge to the trailing edge, the waveform of trough.
The axial-flow fan blade of described a kind of blade middle part bending, its special way is: described crest, trough are positioned near excircle 80% place from blade and begin to the scope at 95% excircle place.
The axial-flow fan blade of described a kind of blade middle part bending, its special way is: the bending width of described crest or trough is B 〉=5%D, B=10%D.
The axial-flow fan blade of described a kind of blade middle part bending, its special way is: the summit of described crest, the lowest point of trough are in obtuse angle.
The axial-flow fan blade of described a kind of blade middle part bending, its special way is: the summit of described crest and the lowest point of trough are fillet.
The axial-flow fan blade of a kind of blade middle part bending of the utility model, because the level of axial-flow blower is made of infinite a plurality of primitive levels, so the mobility status of primitive level has nothing in common with each other outside any radius of blade height, but there is certain inner link between them, when air-flow curls up when radius changes, its pressure also changes, and radially variation of gas pressure is to balance each other with its centrifugal force, and this Changing Pattern is exactly the radial equilibrium condition.Radially transfer to the low pressure place of outer rim when rotating operation at the high pressure of suction surface inner edge, this suction surface that is flowing in can produce the generation that disturbance causes vortex.Owing to adopt such structure, the high pressure that disperse, stops inner edge can reduce the generation of caused vortex of Radial Flow and flow-disturbing to the outer periphery transmission, has reached the flowing environment of improving air, has improved static pressure and efficient, has reduced noise.And existing general problem on deformation when adopting this structure in mold is produced, can change present fan blade moulding, thereby minimizing manufacture cost.
Description of drawings
Fig. 1 is a stereogram of the present utility model.
Fig. 2 is a sectional view of the present utility model.
Fig. 3 is an axial-flow fan blade noise pattern in the prior art.
Fig. 4 is an axial-flow fan blade noise pattern of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1 and Figure 2, a kind of axial-flow fan blade of blade middle part bending, comprise wheel hub 1 and blade 2, blade 2 comprises excircle 21, leading edge 22 and trailing edge 23, described blade 2 be arrange in the radial direction, a continuous crest 3 from the leading edge to the trailing edge, the waveform of trough 4.
Described crest 3, trough 4 are positioned near excircle 80% place from blade and begin to the scope at 95% excircle place.
The bending width of described crest 3 or trough 4 is B 〉=5%D, B=10%D.D is meant the diameter of wind wheel; B is the width of bending.
The lowest point of the summit of described crest 3, trough 4 in obtuse angle.
The summit of described crest and the lowest point of trough also can be fillet.
Under equal conditions, to prior art, axial-flow fan blade of the present utility model, test shows: as shown in Figure 3, Figure 4, the noise of axial-flow leaf sheet of the present utility model obviously reduces.
Claims (8)
1. the axial-flow fan blade of blade middle part bending, comprise wheel hub and blade, blade comprises excircle, leading edge and trailing edge, it is characterized in that: described blade be arrange in the radial direction, at least one the continuous crest from the leading edge to the trailing edge, the waveform of trough.
2. the axial-flow fan blade of a kind of blade middle part bending according to claim 1 is characterized in that: described crest, trough are positioned near excircle 80% place from blade and begin to the scope at 95% excircle place.
3. the axial-flow fan blade of a kind of blade middle part bending according to claim 1 and 2, it is characterized in that: the bending width of described crest or trough is B 〉=5%D.
4. the axial-flow fan blade of a kind of blade middle part bending according to claim 1, it is characterized in that: the summit of described crest, the lowest point of trough are in obtuse angle.
5. the axial-flow fan blade of a kind of blade middle part bending according to claim 2, it is characterized in that: the summit of described crest and the lowest point of trough are in obtuse angle.
6. the axial-flow fan blade of a kind of blade middle part bending according to claim 1, it is characterized in that: the summit of described crest and the lowest point of trough are fillet.
7. the axial-flow fan blade of a kind of blade middle part bending according to claim 2, it is characterized in that: the summit of described crest and the lowest point of trough are fillet.
8. the axial-flow fan blade of a kind of blade middle part bending according to claim 1 and 2, it is characterized in that: the bending width of described crest or trough is B=10%D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920272124XU CN201739227U (en) | 2009-11-12 | 2009-11-12 | Middle-bended axial-flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920272124XU CN201739227U (en) | 2009-11-12 | 2009-11-12 | Middle-bended axial-flow fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739227U true CN201739227U (en) | 2011-02-09 |
Family
ID=43554503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920272124XU Expired - Lifetime CN201739227U (en) | 2009-11-12 | 2009-11-12 | Middle-bended axial-flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739227U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161759A (en) * | 2011-12-09 | 2013-06-19 | 珠海格力电器股份有限公司 | Axial-flow fan blade |
| WO2018126745A1 (en) * | 2017-01-06 | 2018-07-12 | 珠海格力电器股份有限公司 | Blade, impeller, and blower |
| CN109340181A (en) * | 2018-10-24 | 2019-02-15 | 美的集团股份有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
| CN110325745A (en) * | 2017-02-28 | 2019-10-11 | 三菱电机株式会社 | Propeller fan, pressure fan and air conditioner |
| WO2019214632A1 (en) * | 2018-05-09 | 2019-11-14 | 约克广州空调冷冻设备有限公司 | Blade and axial flow impeller using same |
| WO2022001872A1 (en) * | 2020-06-30 | 2022-01-06 | 苏州欧普照明有限公司 | Blade for fan, invisible fan and fan lamp |
| EP4008911A1 (en) * | 2020-12-03 | 2022-06-08 | LG Electronics Inc. | Axial fan for outdoor unit of air conditioner |
-
2009
- 2009-11-12 CN CN200920272124XU patent/CN201739227U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161759A (en) * | 2011-12-09 | 2013-06-19 | 珠海格力电器股份有限公司 | Axial-flow fan blade |
| WO2018126745A1 (en) * | 2017-01-06 | 2018-07-12 | 珠海格力电器股份有限公司 | Blade, impeller, and blower |
| US11078921B2 (en) | 2017-01-06 | 2021-08-03 | Gree Electric Appliances, Inc. Of Zhuhai | Blade, impeller and fan |
| CN110325745A (en) * | 2017-02-28 | 2019-10-11 | 三菱电机株式会社 | Propeller fan, pressure fan and air conditioner |
| CN110325745B (en) * | 2017-02-28 | 2021-05-11 | 三菱电机株式会社 | Propeller fan, blower, and air conditioner |
| WO2019214632A1 (en) * | 2018-05-09 | 2019-11-14 | 约克广州空调冷冻设备有限公司 | Blade and axial flow impeller using same |
| US11519422B2 (en) | 2018-05-09 | 2022-12-06 | York Guangzhou Air Conditioning And Refrigeration Co., Ltd. | Blade and axial flow impeller using same |
| CN109340181A (en) * | 2018-10-24 | 2019-02-15 | 美的集团股份有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
| WO2022001872A1 (en) * | 2020-06-30 | 2022-01-06 | 苏州欧普照明有限公司 | Blade for fan, invisible fan and fan lamp |
| EP4008911A1 (en) * | 2020-12-03 | 2022-06-08 | LG Electronics Inc. | Axial fan for outdoor unit of air conditioner |
| CN114607640A (en) * | 2020-12-03 | 2022-06-10 | Lg电子株式会社 | Axial flow fan arranged on outdoor unit of air conditioner |
| AU2021277760B2 (en) * | 2020-12-03 | 2023-10-05 | Lg Electronics Inc. | Axial fan for outdoor unit of air conditioner |
| US11828476B2 (en) | 2020-12-03 | 2023-11-28 | Lg Electronics Inc. | Axial fan for outdoor unit of air conditioner |
| CN114607640B (en) * | 2020-12-03 | 2024-04-05 | Lg电子株式会社 | Axial flow fan arranged on outdoor unit of air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110209 |
|
| CX01 | Expiry of patent term |