ITUB20159461A1 - WIND TURBINE FOR VERTICAL AXLE BOATS WITH A REFILLABLE PARALLEL BLADE - Google Patents

WIND TURBINE FOR VERTICAL AXLE BOATS WITH A REFILLABLE PARALLEL BLADE Download PDF

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Publication number
ITUB20159461A1
ITUB20159461A1 ITUB2015A009461A ITUB20159461A ITUB20159461A1 IT UB20159461 A1 ITUB20159461 A1 IT UB20159461A1 IT UB2015A009461 A ITUB2015A009461 A IT UB2015A009461A IT UB20159461 A ITUB20159461 A IT UB20159461A IT UB20159461 A1 ITUB20159461 A1 IT UB20159461A1
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IT
Italy
Prior art keywords
blades
shaft
wind turbine
parallel
spokes
Prior art date
Application number
ITUB2015A009461A
Other languages
Italian (it)
Inventor
Alberto Donini
Original Assignee
Alberto Donini
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 Alberto Donini filed Critical Alberto Donini
Priority to ITUB2015A009461A priority Critical patent/ITUB20159461A1/en
Publication of ITUB20159461A1 publication Critical patent/ITUB20159461A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D3/00Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D13/00Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/40Arrangements or methods specially adapted for transporting wind motor components
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D3/00Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06Rotors
    • F03D3/062Rotors characterised by their construction elements
    • F03D3/064Fixing wind engaging parts to rest of rotor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/21Rotors for wind turbines
    • F05B2240/211Rotors for wind turbines with vertical axis
    • F05B2240/212Rotors for wind turbines with vertical axis of the Darrieus type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/21Rotors for wind turbines
    • F05B2240/211Rotors for wind turbines with vertical axis
    • F05B2240/213Rotors for wind turbines with vertical axis of the Savonius type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/20Rotors
    • F05B2240/30Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/31Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
    • F05B2240/313Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape with adjustable flow intercepting area
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/90Mounting on supporting structures or systems
    • F05B2240/93Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F05B2240/931Mounting on supporting structures or systems on a structure floating on a liquid surface which is a vehicle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/02Transport, e.g. specific adaptations or devices for conveyance
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/727Offshore wind turbines
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

Landscapes

  • 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)
  • Wind Motors (AREA)

Description

DESCRIZIONE DESCRIPTION

Il campo lecnico a cui si riferisce questa invenzione è quello delle turbine eoliche adatte per imbarcazioni. Lo stato della tecnica attuale comprende turbine eoliche sia ad asse orizzontale che ad asse verticale, adatte per le barche, ma nessuna di queste ha le pale mobili e richiudibili come quelle dell’ invenzione qui proposta. La presente invenzione, infatti, riguarda una turbina eolica ad asse verticale, atta a produrre energia elettrica a bordo delle imbarcazioni, la quale è dotata di pale a profilo aerodinamico incernierate alle due estremità (o vicino ad esse) e quindi mobili, tramite la rotazione dei raggi che le uniscono all’ albero centrale. Le pale possono essere aperte, tramite un meccanismo, in modo da permettere il funzionamento della turbina eolica, oppure possono essere chiuse, avvicinandole Luna all’altra e all’ albero della turbina, quando si vuole smontare la turbina e nasconderla sottocoperta. Le pale, sia in posizione aperta che chiusa, rimangono sempre parallele Luna all’ altra e parallele all’ albero centrale, il meccanismo mantiene le pale aperte in posizione stabile quando la turbina deve funzionare, generare energia elettrica e ricaricare la batteria dell’imbarcazione. L’ apertura e la chiusura delle pale, che si mantengono parallele a sé stesse e ali’ albero della turbina, non è presente nelle turbine eoliche da barca attualmente sul mercato. Si avvicinano le pale all’ albero del rotore, si smonta la turbina eolica dal suo palo di sostegno {ad esempio allentando un morsetto) e la si infila in un’apposita sacca in modo da poterla immagazzinare sottocoperta senza spreco di spazio. Prima di avvicinarsi alle pale, la rotazione della turbina eolica deve essere fermata, e, a tale scopo, deve essere presente un’ apposito freno, elettronico o meccanico. La turbina eolica ad asse verticale a pale parallele richiudibili è una novità per il mercato delle turbine eoliche per imbarcazioni. Risolve il problema tecnico di poter smontare facilmente la turbina eolica e di immagazzinarla sottocoperta senza spreco di spazio. Un brevetto che illustra lo stato della tecnica attuale, depositato in precedenza, il n° RN2015A000016, descriveva una turbina eolica a pale richiudibili simile a quella del presente brevetto, ma nella quale le pale non rimanevano parallele a sé stesse e all’ albero della turbina, nelle due posizioni di apertura e chiusura, permettendo solo la realizzazione di turbine ad asse verticale con pale inclinate (a V), che presentano rendimenti inferiori a quelle ad asse verticale con pale parallele. Per tale motivo, il presente brevetto migliora quello succitato, permettendo un’ aumento di efficienza della turbina eolica (sfruttando cioè turbine eoliche ad asse verticale con pale parallele e non inclinate), pur mantenendo la caratteristica di poter chiudere le pale, avvicinandole all’ albero, in modo da poter smontare facilmente la turbina eolica. Ulteriori aspetti e vantaggi della presente invenzione risulteranno maggiormente dalla seguente descrizione dettagliata di alcuni suoi esempi di realizzazione attualmente preferiti, illustrati a titolo indicativo e non limitativo negli uniti disegni, nei quali: la figura 1 è lo schema a blocchi delia “Turbina eolica per imbarcazioni ad asse verticale a pale parallele richiudibiii”, secondo la presente invenzione, formata da almeno un mozzo o albero ( 1), collegato meccanicamente all’ albero del generatore elettrico, dai raggi (6) di collegamento dell’ albero (1) alle pale a profilo alare (9) tramite le cerniere (4) e (5) poste alle’ estremità dei raggi 6; le pale (9) si possono muovere, ruotando i raggi (6) tramite le cerniere (4) e (5) poste alla loro estremità, in modo da poter essere allontanate o avvicinate all’albero (1), mantenendosi parallele ad esso. La figura 2 illustra un esempio di realizzazione, a titolo indicativo e non limitativo, della “turbina eolica per imbarcazioni ad asse verticale a pale parallele richiudibiii”, secondo la presente invenzione, formata da almeno un mozzo o albero ( 1 ), collegato meccanicamente all’ albero del generatore elettrico, dai raggi (6) di collegamento dell’ albero (1) alle pale a profilo alare (9) tramite le cerniere (4) e (5) poste alle estremità dei raggi 6; le pale (9) si possono muovere, ruotando i raggi (6) tramite le cerniere (4) e (5) poste alla loro estremità, in modo da poter essere allontanate o avvicinate all’albero ( 1 ), mantenendosi parallele ad esso. Le cerniere (4), di collegamento fra i raggi (6) e l’albero (I), sono collegate, tramite i perni (3), agli anelli (2), calettati all’ albero (1 ). Le cerniere (5), di collegamento fra i raggi (6) e le pale a profilo alare (9), sono collegate tramite i perni (7) ai raccordi (8) e (10) posti alt’ estremità delle pale a profilo alare (9). In questo esempio, la turbina eolica ad asse verticale a pale parallele richiudibiii è di tipo Darrieus. La manopola (1 1 ) serve per bloccare l’albero (1 ) sull’ albero del generatore elettrico, e deve essere svitata per poter smontare la turbina dal suo sostegno. 1 supporti (12), calettati all’ albero (1) della turbina eolica, mantengono in posizione stabile i raggi (6) quando la turbina è aperta e può funzionare, tramite un’apposita scanalatura realizzata nei supporti (12), nella quale si inseriscono in modo preciso i raggi (6). La figura 3 mostra la turbina eolica ad asse verticale a pale parallele richiudibili in posizione aperta, mentre la figura 4 mostra la stessa in posizione chiusa. La chiusura delle pale diminuisce l’ingombro per lo stoccaggio della turbina eolica. Nella figura 5, illustrata a titolo indicativo e non limitativo nel disegno, si vede come il supporto ( 12), fissato, tramite Γ anello (2) all’ albero della turbina eolica, sia dotato di una scanalatura (13) nella quale si inserisce il raggio (6), quando le pale sono in posizione di apertura. I supporti (12), quindi, tramite la scanalatura (13), sostengono e stabilizzano i raggi (6). La turbina eolica per imbarcazioni ad asse verticale a pale parallele richiudibili può essere di tipo Darrieus, oppure di tipo ibrido Savonius-Darrieus. con le pale di tipo Darrieus parallele e richiudibili, e le pale di tipo Savonius, poste più vicine all’ asse di rotazione rispetto alle pale Darrieus, e fissate all’ albero de! rotore. The technical field to which this invention refers is that of wind turbines suitable for boats. The current state of the art includes both horizontal and vertical axis wind turbines, suitable for boats, but none of these have movable and resealable blades like those of the invention proposed here. The present invention, in fact, relates to a vertical axis wind turbine, suitable for producing electricity on board boats, which is equipped with aerodynamic profile blades hinged at the two ends (or close to them) and therefore mobile, by means of rotation. of the rays that unite them to the central shaft. The blades can be opened, through a mechanism, in order to allow the operation of the wind turbine, or they can be closed, bringing them closer to the other and to the turbine shaft, when you want to disassemble the turbine and hide it below deck. The blades, both in the open and closed position, always remain parallel to each other and parallel to the central shaft, the mechanism keeps the blades open in a stable position when the turbine must operate, generate electricity and recharge the boat battery. The opening and closing of the blades, which remain parallel to themselves and to the turbine shaft, is not present in boat wind turbines currently on the market. The blades are brought closer to the rotor shaft, the wind turbine is disassembled from its support pole (for example by loosening a clamp) and slipped into a special bag so that it can be stored below deck without wasting space. Before approaching the blades, the rotation of the wind turbine must be stopped, and, for this purpose, there must be a special brake, electronic or mechanical. The vertical axis wind turbine with foldable parallel blades is a novelty for the market of wind turbines for boats. It solves the technical problem of being able to easily disassemble the wind turbine and store it below deck without wasting space. A patent illustrating the current state of the art, filed previously, n ° RN2015A000016, described a wind turbine with resealable blades similar to that of the present patent, but in which the blades did not remain parallel to themselves and to the turbine shaft , in the two open and closed positions, allowing only the construction of vertical axis turbines with inclined blades (V-shaped), which have lower yields than those with vertical axis with parallel blades. For this reason, the present patent improves the aforementioned one, allowing an increase in the efficiency of the wind turbine (i.e. using vertical axis wind turbines with parallel and not inclined blades), while maintaining the characteristic of being able to close the blades, bringing them closer to the shaft. , so you can easily disassemble the wind turbine. Further aspects and advantages of the present invention will become clearer from the following detailed description of some of its currently preferred embodiments, illustrated by way of non-limiting example in the accompanying drawings, in which: Figure 1 is the block diagram of the "Wind turbine for boats vertical axis with reclosable parallel blades ", according to the present invention, formed by at least one hub or shaft (1), mechanically connected to the shaft of the electric generator, from the spokes (6) connecting the shaft (1) to the airfoil (9) by means of the hinges (4) and (5) placed at the ends of the spokes 6; the blades (9) can be moved by rotating the spokes (6) through the hinges (4) and (5) placed at their ends, so that they can be moved away from or brought closer to the shaft (1), keeping parallel to it. Figure 2 illustrates an example of embodiment, by way of non-limiting example, of the "wind turbine for vertical axis boats with foldable parallel blades", according to the present invention, formed by at least one hub or shaft (1), mechanically connected to the shaft of the electric generator, from the connecting spokes (6) of the shaft (1) to the airfoil blades (9) by means of the hinges (4) and (5) placed at the ends of the spokes 6; the blades (9) can be moved by rotating the spokes (6) through the hinges (4) and (5) placed at their ends, so that they can be moved away from or brought closer to the shaft (1), keeping parallel to it. The hinges (4), connecting the spokes (6) and the shaft (I), are connected, through the pins (3), to the rings (2), keyed to the shaft (1). The hinges (5), connecting the spokes (6) and the wing profile blades (9), are connected by means of the pins (7) to the fittings (8) and (10) placed at the extremity of the wing profile blades (9). In this example, the vertical axis wind turbine with folding parallel blades is of the Darrieus type. The knob (1 1) is used to lock the shaft (1) on the shaft of the electric generator, and must be unscrewed in order to disassemble the turbine from its support. 1 supports (12), keyed to the shaft (1) of the wind turbine, keep the spokes (6) in a stable position when the turbine is open and can operate, through a special groove made in the supports (12), in which precisely insert the spokes (6). Figure 3 shows the vertical axis wind turbine with parallel blades that can be closed in the open position, while Figure 4 shows it in the closed position. Closing the blades reduces the space required for storing the wind turbine. In figure 5, illustrated by way of indication and not of limitation in the drawing, it can be seen how the support (12), fixed, by means of a Γ ring (2) to the shaft of the wind turbine, is equipped with a groove (13) into which it is inserted the spoke (6), when the blades are in the open position. The supports (12), therefore, through the groove (13), support and stabilize the spokes (6). The wind turbine for vertical axis boats with reclosable parallel blades can be of the Darrieus type, or of the Savonius-Darrieus hybrid type. with parallel and closable Darrieus-type blades, and Savonius-type blades, placed closer to the axis of rotation than the Darrieus blades, and fixed to the shaft of! rotor.

Claims (4)

RIVENDICAZIONI 1) ‘‘Turbina eolica per imbarcazioni ad asse verticale a pale parallele richiudibili”, secondo la presente invenzione, è formata da almeno un mozzo o albero (1), collegato meccanicamente all" albero del generatore elettrico, dai raggi (6) di collegamento fra P albero (1) e le pale a profilo alare (9), tramite le cerniere (4) e (5) poste alle estremità dei raggi (6); le pale (9) si possono muovere, ruotando i raggi (6) tramite le cerniere (4) e (5) poste alla loro estremità, in modo da poter essere allontanate o avvicinate all’albero (1), mantenendosi parallele ad esso. CLAIMS 1) "Wind turbine for vertical axis boats with reclosable parallel blades", according to the present invention, is formed by at least one hub or shaft (1), mechanically connected to the "shaft of the electric generator, by the connecting spokes (6) between P shaft (1) and the airfoil blades (9), by means of the hinges (4) and (5) placed at the ends of the spokes (6); the blades (9) can be moved by rotating the spokes (6) by means of the hinges (4) and (5) placed at their ends, so that they can be moved away from or brought closer to the shaft (1), keeping parallel to it. 2) Dispositivo secondo la rivendicazione 1, caratterizzato dal fatto che la posizione estrema di apertura delle pale (9) può essere resa stabile dai supporti (12), calettati all’ albero (1) della turbina eolica, che mantengono nella corretta posizione i raggi (6), tramite apposite scanalature (13) realizzate nei supporti (12), nelle quali si inseriscono in modo preciso ì raggi (6). 2) Device according to claim 1, characterized in that the extreme opening position of the blades (9) can be made stable by the supports (12), keyed to the shaft (1) of the wind turbine, which keep the spokes in the correct position (6), through special grooves (13) made in the supports (12), into which the spokes (6) are inserted precisely. 3) Dispositivo secondo una qualsiasi delle rivendicazioni precedenti, caratterizzato dal fatto che la turbina eolica per imbarcazioni ad asse verticale a pale parallele richiudibili è di tipo Darrieus. 3) Device according to any one of the preceding claims, characterized in that the wind turbine for vertical axis boats with reclosable parallel blades is of the Darrieus type. 4) Dispositivo secondo le rivendicazioni 1 o 2, caratterizzato dal fatto che la turbina eolica per imbarcazioni ad asse verticale a pale parallele richiudibili è di tipo ibrido Savonius-Darrieus, con le pale di tipo Darrieus parallele e richiudibili, e le pale di tipo Savonius, poste più vicine all’ asse di rotazione rispetto alle pale Darrieus, e fissate all’ albero del rotore.4) Device according to claims 1 or 2, characterized in that the wind turbine for vertical axis boats with reclosable parallel blades is of the Savonius-Darrieus hybrid type, with parallel and reclosable Darrieus-type blades, and Savonius-type blades , placed closer to the rotation axis than the Darrieus blades, and fixed to the rotor shaft.
ITUB2015A009461A 2015-11-26 2015-11-26 WIND TURBINE FOR VERTICAL AXLE BOATS WITH A REFILLABLE PARALLEL BLADE ITUB20159461A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITUB2015A009461A ITUB20159461A1 (en) 2015-11-26 2015-11-26 WIND TURBINE FOR VERTICAL AXLE BOATS WITH A REFILLABLE PARALLEL BLADE

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Application Number Priority Date Filing Date Title
ITUB2015A009461A ITUB20159461A1 (en) 2015-11-26 2015-11-26 WIND TURBINE FOR VERTICAL AXLE BOATS WITH A REFILLABLE PARALLEL BLADE

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427003A (en) * 2005-06-06 2006-12-13 Steven Peace Portable renewable energy apparatus
WO2008104060A1 (en) * 2007-02-27 2008-09-04 Vaxsis Inc. Collapsible vertical-axis turbine
WO2010148071A1 (en) * 2009-06-16 2010-12-23 Northeastern University Collapsible reaction turbine
US20110025071A1 (en) * 2009-07-28 2011-02-03 Windesign S.R.L. Hybrid type vertical shaft turbine for wind power generating devices
WO2011105970A2 (en) * 2010-02-25 2011-09-01 Bortel Milos Wind generator with vertical rotation axis, in particular for mobile applications

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2427003A (en) * 2005-06-06 2006-12-13 Steven Peace Portable renewable energy apparatus
WO2008104060A1 (en) * 2007-02-27 2008-09-04 Vaxsis Inc. Collapsible vertical-axis turbine
WO2010148071A1 (en) * 2009-06-16 2010-12-23 Northeastern University Collapsible reaction turbine
US20110025071A1 (en) * 2009-07-28 2011-02-03 Windesign S.R.L. Hybrid type vertical shaft turbine for wind power generating devices
WO2011105970A2 (en) * 2010-02-25 2011-09-01 Bortel Milos Wind generator with vertical rotation axis, in particular for mobile applications

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