WO2009097850A3 - A rotor, in particular for propellers or wind energy systems - Google Patents

A rotor, in particular for propellers or wind energy systems Download PDF

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Publication number
WO2009097850A3
WO2009097850A3 PCT/DK2009/000017 DK2009000017W WO2009097850A3 WO 2009097850 A3 WO2009097850 A3 WO 2009097850A3 DK 2009000017 W DK2009000017 W DK 2009000017W WO 2009097850 A3 WO2009097850 A3 WO 2009097850A3
Authority
WO
WIPO (PCT)
Prior art keywords
blade
hub
rotor
blade plane
leading edge
Prior art date
Application number
PCT/DK2009/000017
Other languages
French (fr)
Other versions
WO2009097850A2 (en
Inventor
Bjarne Flytklint
Original Assignee
Bjarne Flytklint
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bjarne Flytklint filed Critical Bjarne Flytklint
Publication of WO2009097850A2 publication Critical patent/WO2009097850A2/en
Publication of WO2009097850A3 publication Critical patent/WO2009097850A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
    • F03D1/06—Rotors
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301—Cross-section characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

When, according to the invention, a rotor (1) for a propeller or a windmill is equipped with two-part blades (3), which are secured to the hub (2) offset to the right of a centre line (C) through the hub, and which comprise a first blade plane (4) and a laterally offset second blade plan (5), and the blade planes are arranged in such a manner that the leading edge (7) of the first blade plane extends approximately in parallel with the centre line (C) radially outwards from the centre of the hub and forms an acute angle (A) in combination with the leading edge (8) of the second blade plane, so that the leading edge (8) is disposed behind the leading edge (7) seen in relation to the direction of rotation of the hub, and when the length of the trailing edge (10) of the second blade plane is defined by a line which extends from the centre of the hub essentially perpendicularly to the trailing edge (10) of the blade plane, and by the blade tip of the blade plane, a rotor having a high efficiency and having relatively small dimensions is achieved.
PCT/DK2009/000017 2008-02-05 2009-01-21 A rotor, in particular for propellers or wind energy systems WO2009097850A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200800155 2008-02-05
DKPA200800155 2008-02-05

Publications (2)

Publication Number Publication Date
WO2009097850A2 WO2009097850A2 (en) 2009-08-13
WO2009097850A3 true WO2009097850A3 (en) 2010-01-21

Family

ID=40952489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2009/000017 WO2009097850A2 (en) 2008-02-05 2009-01-21 A rotor, in particular for propellers or wind energy systems

Country Status (1)

Country Link
WO (1) WO2009097850A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038076A1 (en) * 2009-08-19 2011-02-24 Konrad Buckel Rotor element for flow around a fluid and rotor
EP2383465A1 (en) * 2010-04-27 2011-11-02 Lm Glasfiber A/S Wind turbine blade provided with a slat assembly
EP2410171A1 (en) * 2010-07-23 2012-01-25 Ewt Ip B.V. Wind turbine having a rotor with hub
GB2482545B (en) 2010-08-06 2017-05-03 Ge Aviat Systems Ltd Aircraft propellers with composite blades mounted to a single propeller hub
US9816383B2 (en) 2011-12-28 2017-11-14 Orville J. Birkestrand Power generation apparatus
US9816384B2 (en) 2011-12-28 2017-11-14 Orville J. Birkestrand Power generation apparatus
FR3012180B1 (en) * 2013-10-18 2018-02-16 Sebastien Manceau HORIZONTAL ROTATING AXLE WIND MACHINE COMPRISING FAMILIES OF BLADES
US11384734B1 (en) 2017-04-07 2022-07-12 Orville J. Birkestrand Wind turbine
EP4111052A1 (en) 2020-02-27 2023-01-04 BIRKESTRAND, Orville, J. Toroidal lift force engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032119A (en) * 1959-05-20 1962-05-01 Hachmann Hans Wind power plant
EP0064742A2 (en) * 1981-05-07 1982-11-17 Ficht GmbH Rotor for a wind power station
EP0295353A1 (en) * 1987-06-13 1988-12-21 Khammas, Achmed Adolf Wolfgang Rotorblade
DE4134062A1 (en) * 1991-10-15 1992-04-02 Dieter Schulz Aircraft propeller with tandem blades - has each tandem pair consisting of two overlapping blades

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032119A (en) * 1959-05-20 1962-05-01 Hachmann Hans Wind power plant
EP0064742A2 (en) * 1981-05-07 1982-11-17 Ficht GmbH Rotor for a wind power station
EP0295353A1 (en) * 1987-06-13 1988-12-21 Khammas, Achmed Adolf Wolfgang Rotorblade
DE4134062A1 (en) * 1991-10-15 1992-04-02 Dieter Schulz Aircraft propeller with tandem blades - has each tandem pair consisting of two overlapping blades

Also Published As

Publication number Publication date
WO2009097850A2 (en) 2009-08-13

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