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WO2006095369A1 - Eolienne a axe vertical - Google Patents

Eolienne a axe vertical Download PDF

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Publication number
WO2006095369A1
WO2006095369A1 PCT/IT2005/000335 IT2005000335W WO2006095369A1 WO 2006095369 A1 WO2006095369 A1 WO 2006095369A1 IT 2005000335 W IT2005000335 W IT 2005000335W WO 2006095369 A1 WO2006095369 A1 WO 2006095369A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
blades
turbine
turbine according
elements
Prior art date
Application number
PCT/IT2005/000335
Other languages
English (en)
Inventor
Michele Bufis
Original Assignee
B.Mast S.R.L.
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 B.Mast S.R.L. filed Critical B.Mast S.R.L.
Publication of WO2006095369A1 publication Critical patent/WO2006095369A1/fr

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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F03D3/0409—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels surrounding the rotor
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/18—Combinations of wind motors with apparatus storing energy storing heat
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/22—Wind motors characterised by the driven apparatus the apparatus producing heat
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/217—Rotors for wind turbines with vertical axis of the crossflow- or "Banki"- or "double action" type
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present invention relates to an improved aeolian turbine.
  • the invention relates to a vertical output shaft lift turbine, studied and realised in order to obtain a high efficiency, independently from the force and the direction of the incident wind.
  • Aeolian energy is one of the more interesting sources.
  • Problem of exploitation of Aeolian energy is that said energy supply is usually discontinuous both in time and direction.
  • Rotors of said turbines can be:
  • vertical axis rotors In vertical axis rotors, wind direction is perpendicular to the rotor axis. Blades move along a plane parallel to the fluid vein.
  • Typical examples of vertical axis rotors are "Savonius" rotors. They are characterised by a low rotation speed, high momentum and low efficiency. They are suitable for mechanical use such as water pumps. Really, their use is now limited to rustic environments. In any case, they have the remarkable advantage that they do not need being oriented according to the wind direction.
  • rotor axis In case of horizontal axis rotors, rotor axis is parallel to the wind direction and rotates along a plane perpendicular to the same direction. Main characteristics of these rotors are:
  • Hybrid rotors that have been realised very recently, have the main object of obtaining advantages both with respect to horizontal axis rotors and with respect to vertical axis rotors.
  • Object of the present invention is therefore that of suggesting an aeolian turbine characterised by a high efficiency independently from the wind direction.
  • Another object of the present invention is that of suggesting an aeolian turbine that can be used also for domestic apparatuses.
  • an improved aeolian turbine comprising a rotor, rotatably mounted on an axis coupled with an output shaft, and characterised in that said rotor comprises a plurality of blades, substantially circularly fixed between two closed elements, thus creating an inner cavity, said blades providing a first surface, convex and oriented according to the rotation direction of said rotor, and a second surface, opposed to said first surface; and in that it comprises a conveyor, provided with a plurality of air flow deflection means, all along the perimeter of said rotor, and in front of said blades; said deflection means protecting the blades rotating according a direction opposite to the wind flow entering within the turbine and conveying said wind flow on said second surface and/or on the profile of said rotating blades, thus generating a lift, and inducing the rotor motion; said wind flow converging within said cavity and being deviated at the outlet by said deflection means substantially along the blade profile, thus creating further lift force in the
  • said axis can be vertical. Still according to the invention, said elements can be comprised of two substantially circular disks or of two circular rings. Further, according to the invention, said blades can provide a second plane surface, opposed with respect to said first convex surface.
  • said blades can have both profiles rounded.
  • said blades can be fixed to said two elements with an angle between 42° and 53°, preferably 45°, with respect to the line tangent to the perimeter of said two closed elements.
  • said conveyor can be comprised of two circular elements concentrically superimposed with respect to said closed elements.
  • said means for deviating the air flow can comprise a plurality of vanes, preferably flat vanes.
  • said vanes can be provided at an angle of 45° with respect to the line tangent to the perimeter of said two elements.
  • said turbine can comprise a support structure, providing a plurality of upper arms converging toward a first central joint, and a plurality of lower arms converging toward a second central joint, said plurality of upper arms and said plurality of lower arms being connected by connection bars and/or supports and/or lateral and radial struts.
  • an electric generation device characterised in that it comprises a turbine and a electro-magnetic transducer; the shaft to which said rotor is coupled being mechanically coupled with said electro-magnetic transducer, so as to generate electric power following the activation of said turbine.
  • said device can comprise an energy storage reservoir, that can be provided with an insulating layer.
  • said reservoir can provide a black and matt surface absorbing the solar energy.
  • figure 1 shows a perspective view of the aeolian turbine according to the present invention open above
  • figure 2 shows a top section view of the aeolian turbine according to figure 1
  • figure 3 shows a section view of a blade of a rotor of the turbine of figure 1
  • figure 4 shows a section view of the turbine according to figure
  • figure 5 shows an embodiment of a support structure of the aeolian turbine of figure 1 ;
  • figure 6 shows a power vs. wind speed graph; and
  • figure 7 shows a power generation device.
  • Said turbine 1 is mainly comprised of two parts: conveyor 2 and rotor 3.
  • Conveyor 2 is fixed. It is comprised of two circular rings 4, 4, faced each other, between which a plurality of plane profile vane 5 are mounted in a normal position.
  • Said vanes 5 suitably convey the air flow impinging on the rotor 3, each one with a different deviation angle with respect to the fluid vein direction, but all with the same and well established incidence angle of each section with respect to the corresponding lines tangent to the rotor 3.
  • Best keying angle of vanes 5 on said conveyor 2 is 45°.
  • Length of said vanes 5 must be such that section of fluid vein entering between two vanes reduces up to the minimum value of 65% at the outlet.
  • conveyor 2 vanes 5 Another function of conveyor 2 vanes 5 is that of repairing the wind from the rotor 3 in correspondence of the quadrant wherein its blades
  • Rotor 3 provided inside the fixed conveyor 2, is comprised of two discs 7, parallel and faced each other, being understood that circular rings can be used as well. Between said discs a crown of suitably shaped blades 6 is mounted, said blades having the same length of said vanes 5, o as said conveyor 2 and said rotor 3 look like a single cylindrical body, thus compacting the assembly.
  • Conveyor 2 is realised in order to pick up the wind and to transform its kinetic energy into mechanical energy to be transferred to the shaft 8.
  • Wind flow conveyed by outer vanes 5, enters within the rotor 3, pushing its blades 6, causing their rotation about its axis.
  • Rotor 3 blades 6 are realised as a body having an asymmetric profile section with two surfaces 6' and 6", respectively flat and convex, as shown in figure 3.
  • surface 6' can be concave.
  • Said conformation is functionally very similar to the wings of an airplane. They are provided along the peripheral part of two discs 7, with an incidence angle (45° ⁇ 3 ⁇ 8°) with respect to the line tangent to the circle including said discs 7. Said position allows obtaining an optimum efficiency, based on the lift aerodynamic laws.
  • said blades 6 are concerned by the wind flow alternatively according to the two directions, depending on their position during the rotation of the rotor 3, as it can be noted from figure 4.
  • first wind flow V impact zone i.e. inlet
  • second impact zone i.e. wind flow V outlet from rotor 3, in the side opposite to the first one.
  • Air flow V enters through the conveyor 2, vanes 5 of which tend to canalise it, section by section, according to the same angle with respect to the rotor 3.
  • the latter stroked by the air canalised flows, due to the reaction on the flat surface 6' of the blades, rotates about its own axis according to the A direction, absorbing part of the kinetic energy ad transforming it into mechanic energy available at the shaft 8.
  • a solution that can be adopted in this kind of rotor 3 with flat - convex blades 6 is that of rounding also the extreme profile of second impact of said blades 6, beside that of the first impact profile, as it occurs in the aeronautic structures.
  • blades 6 during their translation motion caused by the rotation of the rotor 3 also have a rotatory motion about their own axis. Therefore, they are in an upright position when they are stroked by the second impact air flow.
  • a rounded profile has a lower shape resistance with respect to an acute angle profile, resistance that during this phase brakes the translation motion of blades 6. Therefore it is preferred adopting a rounded for both the blade 6 ends.
  • a second solution to be adopted to increase the lift is that of making the surface 6" of said blades 6 rough.
  • Peripheral speed of this kind of turbine cannot be more than 80% of wind speed thrusting the same.
  • FIG 5 it is shown the support structure of turbine 1 according to the present invention.
  • Said structure provides four upper arms 9 converging on a central joint 9', and four lower arms 10, converging on a central joint 10'. Said upper arms 9 and said lower arms 10 are coupled by joint bars 11.
  • said lower arms 10 are coupled with supports 12 by lateral and radial struts 13.
  • figure 6 it is shown the graph of power vs. wind speed for standard aeolian turbines with respect to the one according to the present invention.
  • curve (b) represents power employing a blade free impact turbine
  • curve (c) represents power employing a blade guided impact turbine
  • curve (d) represents power employing a turbine 1 according to the present invention.
  • Curve (d) is almost juxtaposed to curve (a) both for low wind regime and for high wind regime.
  • turbine 1 An embodiment of turbine 1 according to the present invention can be observed from figure 7, employed as domestic power generation device.
  • Said device indicated by reference number 14, provides aeolian turbine 1 , a storage reservoir 15 and an electro-magnetic transducer 16.
  • Storage reservoir 15 is comprised of a metallic container, covered by a thermal insulating layer and by a protective envelope.
  • a window can be realised in the outer envelope, from which the insulating layer is removed and on which a black and matt surface is applied suitable to absorb the solar energy.
  • Output shaft of turbine 1 drags a multipolar permanent magnet 16' housed within a hollow cylinder 16", comprised of ferromagnetic material.
  • basic feature of the present invention is the fact of obtaining aeolian energy with a high efficiency by a vertical rotor turbine, exploiting both the incident action and the lift on said blades.
  • Another advantage of the present invention is its constructive simplicity, its sturdiness, its low cost and the substantial lack of maintenance.
  • a third advantage of the present invention is that said turbine is really noiseless and that it is not bulky.
  • the present invention has been described for illustrative but not limitative purposes, according to its preferred embodiments, but it is to be understood that modifications and/or changes can be introduced by those skilled in the art without departing from the relevant scope as defined in the enclosed claims.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention concerne une éolienne à axe vertical (1) améliorée, comportant un rotor (3), monté de manière rotative sur un axe couplé à un arbre de sortie (8), et caractérisée en ce que ledit rotor (3) comporte une pluralité d'aubes (6), fixées de manière sensiblement circulaire entre deux éléments fermés (7), créant ainsi une cavité interne, lesdites aubes présentant une première surface (6'), convexe et orientée selon la direction de rotation dudit rotor, et une deuxième surface (6'), opposée à ladite première surface (6'); et en ce qu'elle comporte un diffuseur (2) pourvu d'une pluralité de moyens de déflection de l'écoulement d'air, tout au long du périmètre dudit rotor (3) et devant lesdites aubes (6); lesdits moyens de déflection (5) protégeant les aubes (6) tournant dans le sens opposé à l'écoulement du vent entrant dans l'éolienne (1) et guidant ledit écoulement du vent sur ladite deuxième surface (6') et/ou sur le profil desdites aubes tournantes (6), générant ainsi une portance, et provoquant le mouvement du rotor (3); ledit écoulement du vent convergeant à l'intérieur de ladite cavité et étant dévié à la sortie par lesdits moyens de déflection (5) sensiblement le long du profil de l'aube (6), créant ainsi une force de portance supplémentaire dans le sens de la rotation du rotor (3). La présente invention concerne en outre un dispositif de génération électrique.
PCT/IT2005/000335 2005-03-11 2005-06-14 Eolienne a axe vertical WO2006095369A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCE2005A000006 2005-03-11
IT000006A ITCE20050006A1 (it) 2005-03-11 2005-03-11 Turbina eolica con rotore a portanza alare e convogliatore

Publications (1)

Publication Number Publication Date
WO2006095369A1 true WO2006095369A1 (fr) 2006-09-14

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Family Applications (1)

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PCT/IT2005/000335 WO2006095369A1 (fr) 2005-03-11 2005-06-14 Eolienne a axe vertical

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IT (1) ITCE20050006A1 (fr)
WO (1) WO2006095369A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000048A1 (fr) * 2007-06-27 2008-12-31 Antony Glenn Interlandi Turbine éolienne possédant un déflecteur de flux d'air
US20090304512A1 (en) * 2006-12-04 2009-12-10 Design Licensing International Pty Ltd Wind turbine apparatus
WO2011018651A2 (fr) 2009-08-10 2011-02-17 Cross-Flow Energy Company Limited Turbine
US8419346B2 (en) 2008-05-07 2013-04-16 Design Licensing International Pty Ltd Wind turbine
WO2013136060A1 (fr) * 2012-03-12 2013-09-19 The Power Collective Ltd Ensemble turbine éolienne
WO2013167947A1 (fr) 2012-05-08 2013-11-14 Devisch Geert Turbine éolienne et construction comportant cette turbine éolienne
RU2613538C2 (ru) * 2012-05-23 2017-03-17 Чуй-Нан Чио Многонаправленный ветряной генератор кинетической энергии с повышенной эффективностью преобразования энергии ветра

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0522994A1 (fr) * 1990-05-31 1993-01-13 Michael Valsamides Eolienne à axe vertical
WO1996032586A1 (fr) * 1995-04-10 1996-10-17 Michele Bufis Convertisseur combine pour l'energie eolienne et l'energie solaire
US6309172B1 (en) * 1996-08-23 2001-10-30 Georges Gual Wind turbine with low vertical axis
GB2378225A (en) * 2001-05-24 2003-02-05 Peter Rolin Heal Vertical axis turbine in building
US20040130161A1 (en) * 2003-01-02 2004-07-08 Gomez Gomar Josep Lluis Introduced in wind power recovery devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0522994A1 (fr) * 1990-05-31 1993-01-13 Michael Valsamides Eolienne à axe vertical
WO1996032586A1 (fr) * 1995-04-10 1996-10-17 Michele Bufis Convertisseur combine pour l'energie eolienne et l'energie solaire
US6309172B1 (en) * 1996-08-23 2001-10-30 Georges Gual Wind turbine with low vertical axis
GB2378225A (en) * 2001-05-24 2003-02-05 Peter Rolin Heal Vertical axis turbine in building
US20040130161A1 (en) * 2003-01-02 2004-07-08 Gomez Gomar Josep Lluis Introduced in wind power recovery devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AYMAN A AL-MAAITAH: "THE DESIGN OF THE BANKI WIND TURBINE AND ITS TESTING IN REAL WIND CONDITIONS", RENEWABLE ENERGY, PERGAMON PRESS, OXFORD, GB, vol. 3, no. 6/7, 1 September 1993 (1993-09-01), pages 781 - 786, XP000415897, ISSN: 0960-1481 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090304512A1 (en) * 2006-12-04 2009-12-10 Design Licensing International Pty Ltd Wind turbine apparatus
US9303622B2 (en) * 2006-12-04 2016-04-05 Design Licensing International Pty Ltd Wind turbine apparatus
WO2009000048A1 (fr) * 2007-06-27 2008-12-31 Antony Glenn Interlandi Turbine éolienne possédant un déflecteur de flux d'air
US8419346B2 (en) 2008-05-07 2013-04-16 Design Licensing International Pty Ltd Wind turbine
WO2011018651A2 (fr) 2009-08-10 2011-02-17 Cross-Flow Energy Company Limited Turbine
WO2013136060A1 (fr) * 2012-03-12 2013-09-19 The Power Collective Ltd Ensemble turbine éolienne
US9732728B2 (en) 2012-03-12 2017-08-15 The Power Collective Ltd Wind turbine assembly
WO2013167947A1 (fr) 2012-05-08 2013-11-14 Devisch Geert Turbine éolienne et construction comportant cette turbine éolienne
BE1020677A3 (nl) * 2012-05-08 2014-03-04 Devisch Geert Windturbine en gebouw omvattende een dergelijke windturbine.
US9951628B2 (en) 2012-05-08 2018-04-24 Geert Devisch Windturbine and building having such a wind turbine
RU2613538C2 (ru) * 2012-05-23 2017-03-17 Чуй-Нан Чио Многонаправленный ветряной генератор кинетической энергии с повышенной эффективностью преобразования энергии ветра

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Publication number Publication date
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