CN101858361B - Axial-flow impeller having blade hinged with wheel hub - Google Patents
Axial-flow impeller having blade hinged with wheel hub Download PDFInfo
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- CN101858361B CN101858361B CN 201010183142 CN201010183142A CN101858361B CN 101858361 B CN101858361 B CN 101858361B CN 201010183142 CN201010183142 CN 201010183142 CN 201010183142 A CN201010183142 A CN 201010183142A CN 101858361 B CN101858361 B CN 101858361B
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Abstract
The invention discloses an axial-flow impeller having a blade hinged with a wheel hub. The axial-flow impeller comprises the wheel hub and the blade and has the key points that: more than two groove-shaped hinged seats integrated with the wheel hub are arranged on the wheel hub; a connecting end of the blade is provided with a blade joint; the hinged seats are movably linked with the blade joint through a hinged shaft; and the horizontal inclination angle of the blade rotating downward is less than or equal to 6.5 degrees and the horizontal inclination angle of the blade rotating upward is less than or equal to 3 degrees. The stress state of the structure is greatly improved and bending moment is eliminated through the invention; under the combined action of an aerodynamic force, a gravity force and a centrifugal force, balance and stability are achieved; and the quality accident which generally occurs due to the cracked blade is solved. At the same time, the weight is reduced, the reliability of a fan is improved and the cost is reduced.
Description
Affiliated technical field
The present invention relates to the blower fan technical field, specifically a kind of there is no the blade of moment of flexure and wheel hub be the impeller of hinging structure.
Background technique
Common axial flow fan vane wheel, blade and wheel hub adopt the mode such as weld, rivet, be spirally connected to carry out fixing to connect, thereby impeller is in rotary work, blade is at aerodynamic force, gravity, under the synergy of centrifugal force, blade and wheel hub joint produce larger moment of flexure, and Here it is causes the main cause of leaf destruction.These characteristics are particularly evident on large-sized axial flow fan vane wheel.
Summary of the invention
The deficiency that structurally exists in order to overcome existing draught fan impeller the invention provides a kind of the do not have blade of moment of flexure and the axial-flow blower of hub hinged.
the technical solution adopted for the present invention to solve the technical problems is: the axial-flow blower of this blade and hub hinged, comprise wheel hub, blade, mainly to be the hinged seat of flute profile more than two arranging on wheel hub with wheel hub is integrally formed, the connecting end of blade is provided with blade joint, hinged seat is by hinging shaft and blade joint active link, consist of the hinging structure of wheel hub and blade, be provided with the section of stretching out that limit blade excessively rotates on hinged seat, be made as ramp structure below the front end of blade joint, the level inclination that makes hinging structure guarantee blade to rotate≤6.5 °, the level inclination that blade upwards rotates≤3 °.
The present invention's major advantage compared with prior art:
The one, because impeller has adopted hinging structure, when making progress air draft, blade is slightly downward-sloping; During air draft downwards, blade slightly is inclined upwardly; When impeller shaft was parallel to the ground, impeller was horizontal air draft, and its inclination angle ratio makes progress, the inclination angle of air draft downwards is all little.In the general work speed range, stabilization of speed, the inclination angle of blade is all little, and its position will be at aerodynamic force, and gravity under the synergy of centrifugal force, reaches balance and stability.Even the senior general of the level inclination that blade rotates reaches 6.5 °, but can't affect the performance of blower fan.
The 2nd, the impeller of this hinging structure has been eliminated moment of flexure, has got rid of the main cause of leaf destruction, has fundamentally solved the Accident due to quality of leaf destruction.Thereby the stress of structure is improved greatly, alleviated weight, improved the reliability of blower fan, reduced cost.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1;
Fig. 3 is blade joint structural representation of the present invention;
Fig. 4 is hinge base structure schematic diagram of the present invention.
In figure: 1. wheel hub, 2. hinging shaft, 3. hinged seat, 4. blade joint, 5. blade, 6. ramp structure, the 7. section of stretching out.
Embodiment
Describe the present invention below in conjunction with drawings and Examples:
As shown in Figure 1, 2, the axial-flow blower of this blade and hub hinged comprises wheel hub 1, blade 5, is mainly the hinged seat 3 of 4 flute profiles that are integrally formed with wheel hub 1 is set on wheel hub 1, the connecting end of blade 5 is provided with blade joint 4, and hinged seat 3 is by hinging shaft 2 and blade joint 4 active links.
As shown in Figure 3, the front end of blade joint 4 below is made as ramp structure 6.
As shown in Figure 4, be provided with the section of stretching out 7 that limit blade excessively rotates on hinged seat 3, certain angular range is arranged when guaranteeing blade rotation.The level inclination that each blade 5 rotates≤6.5 °, the level inclination that each blade 5 upwards rotates≤3 °.
Embodiment 1: the blade air draft that makes progress.
Impeller diameter D=1.8m, R=0.1m, rotation speed n=480r/min, blade quantity 3, leaf quality M=3Kg, total head P=130Pa.Calculate:
Gravity W=M * g=3 * 9.8=29.4N,
Aerodynamic force calculates by total head, the aerodynamic force F2=1/3 that each blade is subjected to (π/4 * 1.8 * 1.8) * 130=110.3N,
Centrifugal force F3=M * (π * n/30)
2* (L1+R),
M＝3，L
1＝L/2＝0.4，F3＝3(π×480/30)
2*(0.4+0.1)＝3790N
Inclination alpha=arctg (29.4+1.5 * 110.3)/3790=arctg0.0514=2.94 ° downwards
Embodiment 2: the blade air draft that makes progress.
Impeller diameter D=3m, R=0.1m, rotation speed n=220r/min, blade quantity 4, leaf quality M=8Kg, total head P=130Pa.Calculate:
Gravity W=Mg=8 * 9.8=78.4N,
Aerodynamic force calculates by total head, the aerodynamic force F2=1/4 that each blade is subjected to (π * D * D/2) * P=203.2N,
Centrifugal force F3=M (n π/30)
2* (L1+R)=3503N
Inclination alpha=arctg (W+1.5F2)/F3=6.2 ° downwards
Embodiment 3: the downward air draft of blade.
Compare with the impeller air draft that makes progress, just aerodynamic force is changed into upwards.
Impeller diameter D=1.8m, R=0.1m, rotation speed n=480r/min, blade quantity 3, leaf quality M=3Kg, total head P=130Pa.Calculate:
Gravity W=M * g=3 * 9.8=29.4N,
Aerodynamic force calculates by total head, the aerodynamic force F2=1/3 that each blade is subjected to (π/4 * 1.8 * 1.8) * 130=110.3N,
Centrifugal force F3=M * (π * n/30)
2* (L1+R)=3790N,
Downward inclination alpha=actg (29.4-1.5 * 110.3)/3790=-2.06 ° (negative indication is inclined upwardly).
Embodiment 4: the downward air draft of blade.
Impeller diameter D=3m, R=0.1m, rotation speed n=220r/min, blade quantity 4, leaf quality M=8Kg, total head P=130Pa.Calculate:
Gravity W=Mg=8 * 9.8=78.4N,
Aerodynamic force calculates by total head, the aerodynamic force F2=1/4 that each blade is subjected to (π * D * D/2) * P=203.2N,
Centrifugal force F3=M (n π/30)
2* (L1+R)=3503N
Downward inclination alpha=arctg (78.4-203.2)/4936=-2.04 ° (negative indication is inclined upwardly).
Claims (1)
1. the axial-flow blower of a blade and hub hinged, comprise wheel hub, blade, it is characterized in that: the hinged seat that two above flute profiles that are integrally formed with wheel hub are set on said wheel hub, the connecting end of blade is provided with blade joint, hinged seat is flexibly connected by hinging shaft and blade joint, be made as ramp structure below the front end of the blade joint of the side that is connected with hinged seat, be provided with the section of stretching out that limit blade excessively rotates on hinged seat, the level inclination that described blade rotates≤6.5 °, the level inclination that blade (5) upwards rotates≤3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010183142 CN101858361B (en) | 2010-05-19 | 2010-05-19 | Axial-flow impeller having blade hinged with wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010183142 CN101858361B (en) | 2010-05-19 | 2010-05-19 | Axial-flow impeller having blade hinged with wheel hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101858361A CN101858361A (en) | 2010-10-13 |
| CN101858361B true CN101858361B (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010183142 Expired - Fee Related CN101858361B (en) | 2010-05-19 | 2010-05-19 | Axial-flow impeller having blade hinged with wheel hub |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588340A (en) * | 2012-04-01 | 2012-07-18 | 上海尔华杰机电装备制造有限公司 | Fan impeller with preset taper angle |
| CN104500448A (en) * | 2014-12-14 | 2015-04-08 | 惠阳航空螺旋桨有限责任公司 | Axial flow cooling tower fan |
| CN111492145B (en) * | 2017-12-26 | 2022-04-05 | 三菱电机株式会社 | Rotating blade, axial flow fan and ceiling fan |
| CN113049237B (en) * | 2021-03-15 | 2022-12-02 | 北京唐智科技发展有限公司 | Blade fault information extraction method and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040962A (en) * | 1988-06-02 | 1990-04-04 | 通用电器公司 | Fan blade mount |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823617Y (en) * | 2005-07-22 | 2006-10-04 | 盛才良 | Large axial flow fan with zero bending monent structure blade root |
| CN2815483Y (en) * | 2005-08-17 | 2006-09-13 | 虞培清 | Blade automatic expanding type mixer |
| EP2025947B1 (en) * | 2007-07-31 | 2013-02-27 | R.E.M. Holding S.R.L. | Hub-profile connection system for axial fan and axial fan provided with this connection system |
| CN201173212Y (en) * | 2007-12-29 | 2008-12-31 | 王光伟 | Concealed ceiling fan |
| CN201779063U (en) * | 2010-05-19 | 2011-03-30 | 威海克莱特菲尔风机有限公司 | Vane and hub hinged axial flow impeller |
-
2010
- 2010-05-19 CN CN 201010183142 patent/CN101858361B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1040962A (en) * | 1988-06-02 | 1990-04-04 | 通用电器公司 | Fan blade mount |
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| CN101858361A (en) | 2010-10-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 264200 hi tech Industrial Development Zone, Weihai Village town of science and technology Applicant after: Weihai Credit Fan Ventilator Co., Ltd. Address before: 264210, Weihai, Shandong Province town of Weihai light Phil fan Co., Ltd. Applicant before: Weihai Credit Fair Fan Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WEIHAI CREDIT FAIR FAN CO., LTD. TO: WEIHAI CREDIT FAN VENTILATOR CO., LTD. |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20160519 |
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| CF01 | Termination of patent right due to non-payment of annual fee |