CA2574762A1 - Fan blades and modifications - Google Patents
Fan blades and modifications Download PDFInfo
- Publication number
- CA2574762A1 CA2574762A1 CA002574762A CA2574762A CA2574762A1 CA 2574762 A1 CA2574762 A1 CA 2574762A1 CA 002574762 A CA002574762 A CA 002574762A CA 2574762 A CA2574762 A CA 2574762A CA 2574762 A1 CA2574762 A1 CA 2574762A1
- Authority
- CA
- Canada
- Prior art keywords
- fan blade
- mounting member
- fan
- modification
- vertical member
- 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.)
- Granted
Links
- 238000012986 modification Methods 0.000 title claims 15
- 230000004048 modification Effects 0.000 title claims 15
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/24—Moulded or cast structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/24—Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like
-
- 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
-
- 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
- F04D29/384—Blades characterised by form
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A winglet includes a vertical member and a mounting member. The mounting member is configured to facilitate the mounting of the winglet to the tip of a fan blade. The vertical member is configured to extend perpendicularly relative the tip of a fan blade. Adding winglets to fan blades may improve the aerodynamics of the fan blades, and thereby increase efficiencies of a fan.
Claims (25)
1. A winglet for a fan blade, comprising:
(a) a vertical member; and (b) a mounting member, wherein at least a portion of the mounting member is substantially perpendicular to at least a portion of the vertical member, wherein the mounting member is configured to mount to a fan blade first end, wherein the fan blade is configured to be mounted to a fan hub at a second end of the fan blade, the second end being opposite the first end.
(a) a vertical member; and (b) a mounting member, wherein at least a portion of the mounting member is substantially perpendicular to at least a portion of the vertical member, wherein the mounting member is configured to mount to a fan blade first end, wherein the fan blade is configured to be mounted to a fan hub at a second end of the fan blade, the second end being opposite the first end.
2. The modification for a fan blade of claim 1, wherein the vertical member comprises a rounded outer surface.
3. The modification for a fan blade of claim 2, wherein the vertical member further comprises a substantially flat inner surface.
4. The modification for a fan blade of claim 1, wherein the vertical member comprises a perimeter defined by a lower edge, an upper edge, and a rear edge.
5. The modification for a fan blade of claim 4, wherein each of the edges meets generally at a respective corner.
6. The modification for a fan blade of claim 5, wherein each of the corners is generally rounded.
7. The modification for a fan blade of claim 1, wherein at least a portion of the mounting member is configured to fit inside the fan blade first end.
8. The modification for a fan blade of claim 1, wherein the vertical member is configured to inhibit radial airflow over at least a portion of the fan blade proximate to the fan blade first end.
9. The modification for a fan blade of claim 1, wherein the mounting member comprises an inner surface, wherein at least a portion of the inner surface is at a non-perpendicular angle with respect to the mounting member.
10. The modification for a fan blade of claim 1, wherein the mounting member is configured to be substantially fixed to the fan blade first end by one or more fasteners.
11. The modification for a fan blade of claim 1, wherein the vertical member has an upper edge, wherein the mounting member has a leading edge, wherein, when mounted to the first end of a fan blade having a leading edge, the distance from the mounting member leading edge to a point on the upper edge of the vertical member is greater than the distance from the mounting member leading edge to the fan blade leading edge at the first end.
12. The modification for a fan blade of claim 1, wherein the vertical member has an rear edge, wherein the mounting member has a trailing edge, wherein, when mounted to the first end of a fan blade having a trailing edge, the distance from the mounting member trailing edge to a point on the rear edge of the vertical member is greater than the distance from the mounting member trailing edge to the fan blade trailing edge at the first end.
13. The modification for a fan blade of claim 1, wherein the vertical member has a lower edge, wherein the mounting member has a bottom surface, wherein, when mounted to the first end of a fan blade having a bottom surface, the distance from the mounting member bottom surface to a point on the lower edge of the vertical member is greater than the distance from the mounting member bottom surface to any point on the fan blade bottom surface at the first end of the fan blade.
14. The modification for a fan blade of claim 1, wherein the vertical member has an upper edge, wherein the mounting member has a top surface, wherein, when mounted to the first end of a fan blade having a top surface, the distance from the mounting member top surface to a point on the upper edge of the vertical member is greater than the distance from the mounting member top surface to any point on the fan blade top surface at the first end of the fan blade.
15. A modification kit for a fan blade, comprising:
(a) a vertical member;
(b) a mounting member, wherein the mounting member is substantially perpendicular to at least a portion of the vertical member, wherein the mounting member is configured to mount to a fan blade first end, wherein the fan blade is configured to be mounted to a fan hub at a second end of the fan blade, the second end being opposite the first end; and (c) at least one fastener, the at least one fastener being configured to secure the mounting member to the first end.
(a) a vertical member;
(b) a mounting member, wherein the mounting member is substantially perpendicular to at least a portion of the vertical member, wherein the mounting member is configured to mount to a fan blade first end, wherein the fan blade is configured to be mounted to a fan hub at a second end of the fan blade, the second end being opposite the first end; and (c) at least one fastener, the at least one fastener being configured to secure the mounting member to the first end.
16. A fan, comprising:
(a) a hub, the hub being operable to rotate;
(b) a plurality of fan blades, each fan blade having a first end and a second end, wherein each fan blade is mounted to the hub at a respective first end;
and (c) a winglet mounted to the second end of each fan blade.
(a) a hub, the hub being operable to rotate;
(b) a plurality of fan blades, each fan blade having a first end and a second end, wherein each fan blade is mounted to the hub at a respective first end;
and (c) a winglet mounted to the second end of each fan blade.
17. The fan of claim 16, wherein each winglet comprises a vertical member and a mounting member.
18. The fan of claim 17, wherein the mounting member extends substantially perpendicularly from the vertical member.
19. The fan of claim 17, wherein at least a portion of each mounting member is configured to fit in the second end of a respective fan blade.
20. The fan of claim 16, wherein the distance between the first end and second end of each fan blade is at least approximately 4 feet.
21. A method of modifying a fan blade, comprising securing a winglet to a fan blade end, the winglet comprising a vertical member and a mounting member, wherein at least a portion of the mounting member is substantially perpendicular to at least a portion of the vertical member, wherein the mounting member is configured to couple with the fan blade end.
22. A fan blade configured to mount to a rotating fan hub, the fan blade comprising:
(a) a top surface having a generally elliptical curvature;
(b) a bottom surface having a generally elliptical curvature;
(c) a leading edge, wherein the top surface and bottom surface each terminate at the leading edge; and (d) a trailing edge, wherein the top surface and bottom surface each terminate at the trailing edge.
(a) a top surface having a generally elliptical curvature;
(b) a bottom surface having a generally elliptical curvature;
(c) a leading edge, wherein the top surface and bottom surface each terminate at the leading edge; and (d) a trailing edge, wherein the top surface and bottom surface each terminate at the trailing edge.
23. The fan blade of claim 22, further comprising: a first radius of curvature proximate the leading edge, and a second radius of curvature proximate the trailing edge, wherein the first radius of curvature is lower than the second radius of curvature.
24. The fan blade of claim 22, wherein the curvature of the top surface is based on a first ellipse, wherein the curvature of the bottom surface is based on a second ellipse.
25. The fan blade of claim 24, wherein the curvature of the second ellipse is dependent on the curvature of the second ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2719755A CA2719755C (en) | 2004-07-21 | 2005-01-28 | Fan blades |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58994504P | 2004-07-21 | 2004-07-21 | |
| US60/589,945 | 2004-07-21 | ||
| PCT/US2005/002703 WO2006022812A1 (en) | 2004-07-21 | 2005-01-28 | Fan blades and modifications |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2719755A Division CA2719755C (en) | 2004-07-21 | 2005-01-28 | Fan blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2574762A1 true CA2574762A1 (en) | 2006-03-02 |
| CA2574762C CA2574762C (en) | 2012-11-13 |
Family
ID=35967818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2574762A Active CA2574762C (en) | 2004-07-21 | 2005-01-28 | Fan blades and modifications |
Country Status (17)
| Country | Link |
|---|---|
| JP (2) | JP2008507654A (en) |
| KR (3) | KR101297469B1 (en) |
| CN (2) | CN101099028B (en) |
| AU (2) | AU2005278207B2 (en) |
| BR (1) | BRPI0513587B1 (en) |
| CA (1) | CA2574762C (en) |
| CR (1) | CR8933A (en) |
| EC (1) | ECSP077265A (en) |
| EG (1) | EG24639A (en) |
| IL (2) | IL180822A (en) |
| MX (1) | MX2007000821A (en) |
| NO (1) | NO20070961L (en) |
| NZ (2) | NZ553003A (en) |
| RU (2) | RU2353817C2 (en) |
| SG (1) | SG139757A1 (en) |
| WO (1) | WO2006022812A1 (en) |
| ZA (1) | ZA200701425B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7252478B2 (en) | 2004-07-21 | 2007-08-07 | Delta T Corporation | Fan blade modifications |
| US7934907B2 (en) | 2004-07-21 | 2011-05-03 | Delta T Corporation | Cuffed fan blade modifications |
| ES2738011T3 (en) | 2007-03-01 | 2020-01-17 | Delta T Llc | Aerodynamic angle plane extension for fan blade |
| US8721305B2 (en) * | 2009-05-04 | 2014-05-13 | Delta T Corporation | Ceiling fan with variable blade pitch and variable speed control |
| KR101331103B1 (en) * | 2011-05-20 | 2013-11-19 | 성광기전주식회사 | Fan blade for the indoor air circulation and its instrument using this blade |
| US8842000B2 (en) | 2012-07-17 | 2014-09-23 | 4Front Engineered Solutions, Inc. | Fire control systems |
| CN103708038B (en) * | 2012-10-09 | 2016-08-17 | 袁锋 | Double-dragon aircraft |
| KR102200395B1 (en) * | 2013-12-12 | 2021-01-08 | 엘지전자 주식회사 | An axial fan and an air conditioner including the same |
| US9874214B2 (en) | 2014-01-28 | 2018-01-23 | 4Front Engineered Solutions, Inc. | Fan with fan blade mounting structure |
| CN104044729B (en) * | 2014-05-27 | 2016-04-06 | 北京航空航天大学 | A kind of high-altitude propeller arrangement |
| US9726192B2 (en) | 2015-03-31 | 2017-08-08 | Assa Abloy Entrance Systems Ab | Fan blades and associated blade tips |
| GB2551311A (en) * | 2016-05-24 | 2017-12-20 | Airbus Operations Ltd | Winglet |
| TWI648470B (en) * | 2017-09-04 | 2019-01-21 | 建準電機工業股份有限公司 | Blade deflector |
| KR102326771B1 (en) * | 2021-01-06 | 2021-11-15 | 윤형탁 | Impeller and method for manufacturing the same, and blade for an impeller |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3017226A1 (en) * | 1979-05-12 | 1980-11-20 | Papst Motoren Kg | FAN BLADE |
| US4968216A (en) * | 1984-10-12 | 1990-11-06 | The Boeing Company | Two-stage fluid driven turbine |
| DE3819145A1 (en) * | 1988-06-04 | 1989-12-14 | Albrecht George Prof D Fischer | Aerodynamically active end plates for aircraft-wing and propeller-blade tips |
| JP2859448B2 (en) * | 1990-12-29 | 1999-02-17 | 株式会社東芝 | Multi-wing fan |
| US5823480A (en) * | 1993-04-05 | 1998-10-20 | La Roche; Ulrich | Wing with a wing grid as the end section |
| US5564901A (en) * | 1993-12-14 | 1996-10-15 | The Moore Company | Low noise fan |
| US6161797A (en) * | 1996-11-25 | 2000-12-19 | Dugan Air Technologies, Inc. | Method and apparatus for reducing airplane noise |
| CN2284082Y (en) * | 1996-12-30 | 1998-06-17 | 浙江永安消防有限公司 | High effective and high multiple foam generator |
| US6244821B1 (en) * | 1999-02-19 | 2001-06-12 | Mechanization Systems Company, Inc. | Low speed cooling fan |
| JP2002021777A (en) * | 2000-07-12 | 2002-01-23 | Michihiro Nishi | Jet fan |
| CN100484831C (en) * | 2000-07-13 | 2009-05-06 | 韩玮 | Fan-type fluid transportation and power propulsion propeller |
| US6565320B1 (en) * | 2000-11-13 | 2003-05-20 | Borgwarner, Inc. | Molded cooling fan |
| US6626640B2 (en) * | 2001-11-19 | 2003-09-30 | Durmitor Inc. | Fan with reduced noise |
-
2005
- 2005-01-28 CN CN200580030869XA patent/CN101099028B/en active Active
- 2005-01-28 JP JP2007522481A patent/JP2008507654A/en active Pending
- 2005-01-28 CA CA2574762A patent/CA2574762C/en active Active
- 2005-01-28 KR KR1020137007280A patent/KR101297469B1/en active IP Right Grant
- 2005-01-28 AU AU2005278207A patent/AU2005278207B2/en active Active
- 2005-01-28 KR KR1020077003964A patent/KR20070083496A/en not_active Application Discontinuation
- 2005-01-28 KR KR1020127032180A patent/KR101320805B1/en active IP Right Grant
- 2005-01-28 NZ NZ553003A patent/NZ553003A/en unknown
- 2005-01-28 SG SG200800636-3A patent/SG139757A1/en unknown
- 2005-01-28 MX MX2007000821A patent/MX2007000821A/en active IP Right Grant
- 2005-01-28 NZ NZ578817A patent/NZ578817A/en unknown
- 2005-01-28 RU RU2007106444/06A patent/RU2353817C2/en not_active IP Right Cessation
- 2005-01-28 WO PCT/US2005/002703 patent/WO2006022812A1/en active Application Filing
- 2005-01-28 CN CN2009101505341A patent/CN101608640B/en active Active
- 2005-01-28 BR BRPI0513587-7A patent/BRPI0513587B1/en active IP Right Grant
-
2007
- 2007-01-21 IL IL180822A patent/IL180822A/en unknown
- 2007-01-22 EG EGNA2007000051 patent/EG24639A/en active
- 2007-02-16 CR CR8933A patent/CR8933A/en not_active Application Discontinuation
- 2007-02-19 ZA ZA200701425A patent/ZA200701425B/en unknown
- 2007-02-20 NO NO20070961A patent/NO20070961L/en not_active Application Discontinuation
- 2007-02-21 EC EC2007007265A patent/ECSP077265A/en unknown
-
2008
- 2008-11-13 RU RU2008144966/06A patent/RU2008144966A/en unknown
-
2010
- 2010-04-18 IL IL205173A patent/IL205173A/en unknown
- 2010-09-01 AU AU2010214764A patent/AU2010214764B2/en active Active
-
2011
- 2011-07-11 JP JP2011152967A patent/JP4987147B2/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |