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1. WO2007147641 - AN EOLIAN TOWER WITH A BIROTOR

Publication Number WO/2007/147641
Publication Date 27.12.2007
International Application No. PCT/EP2007/005609
International Filing Date 20.06.2007
IPC
F03D 9/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
F03D 1/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
1Wind motors with rotation axis substantially parallel to the air flow entering the rotor
02having a plurality of rotors
CPC
F03D 1/025
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
1Wind motors with rotation axis substantially parallel to the air flow entering the rotor 
02having a plurality of rotors
025coaxially arranged
F03D 9/25
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
20Wind motors characterised by the driven apparatus
25the apparatus being an electrical generator
F05B 2220/7068
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
BINDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
2220Application
70in combination with
706an electrical generator
7068equipped with permanent magnets
Y02E 10/72
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
10Energy generation through renewable energy sources
70Wind energy
72Wind turbines with rotation axis in wind direction
Applicants
  • ALESSANDRO QUERCETTI & C. - FABBRICA GIOCATTOLI F ORMATIVI - S.P.A. [IT]/[IT] (AllExceptUS)
  • QUERCETTI, Alessandro [IT]/[IT] (UsOnly)
Inventors
  • QUERCETTI, Alessandro
Agents
  • PATRITO, Pier, Franco
Priority Data
TO2006A00046223.06.2006IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AN EOLIAN TOWER WITH A BIROTOR
(FR) TOUR D'ÉOLIENNE À BIROTOR
Abstract
(EN)
An eolian tower comprising a high fixed load bearing structure (1) which carries at its upper end a rotating system (2-5) that is actuated by the wind and operates an electric generator (7), this installation being intended for use in the conversion of the eolian energy, characterized in that the rotating system comprises a birotor (2-5) including two parallel coaxial and counter-rotating blade rotors (2-3, 4-5) whose axis is at least nearly horizontal, each blade rotor (2-3, 4-5) comprising a hub (2,4) and a number of blades (3,5) fixed to the hub (2,4), the blades (3,5) of the two blade rotors (2-3, 4-5) being fixed to the corresponding hub (2,4) according to opposite inclination angles, whereby under the action of a wind flow the two blade rotors (2-3, 4-5) take opposite directions of rotation. Both blade rotors (2-3, 4-5) forming the birotor (2-5) may be substantially identical to each other, except for the opposite inclination angles according to which the blades (3,5) are fixed to the corresponding hubs (2,4), or else some slight differences may be foreseen between the two blade rotors (2-3, 4-5), in order to attain in the whole the best operation conditions. A synchronization device or movement inversion device (6) may be provided for operating between the hubs (2,4) of the two blade rotors (2-3, 4-5) of the birotor (2-5), in order that the rotational movements of the two blade rotors (2-3, 4-5) take place with angular speeds opposite but having the same value.
(FR)
La présente invention concerne une tour d'éolienne comprenant une structure porteuse fixe élevée (1) qui porte à son extrémité supérieure un système rotatif (2-5) actionné par le vent et qui fonctionne comme un générateur électrique (7). Cette installation est conçue pour être utilisée dans le cadre de la conversion d'énergie éolienne. Cette invention est caractérisée en ce que le système rotatif comporte un birotor (2-5) qui comprend deux rotors parallèles, coaxiaux et à pales contrarotatives (2-3, 4-5) dont l'axe est au moins approximativement horizontal. Chaque rotor à pales (2-3, 4-5) comporte un moyeu (2,4) et un certain nombre de pales (3,5) fixées sur le moyeu (2,4). Les pales (3,5) des deux rotors à pales (2-3, 4-5) sont fixées sur le moyeu correspondant (2,4) selon des angles d'inclinaison opposés. Sous l'effet d'un courant de vent, les deux rotors à pales (2-3, 4-5) adoptent des sens de rotation opposés. Les deux rotors à pales (2-3, 4-5) formant le birotor (2-5) peuvent être sensiblement identiques, à l'exception des angles d'inclinaison opposés selon lesquels les pales (3,5) sont fixées sur les moyeux correspondants (2,4), ou peuvent présenter de légères différences afin d'obtenir en définitive les meilleures conditions de fonctionnement. Un dispositif de synchronisation ou un dispositif d'inversion de mouvement (6) peut être installé entre les moyeux (2,4) des deux rotors à pales (2-3, 4-5) du birotor (2-5) afin d'obtenir des mouvements de rotation des deux rotors à pales (2-3, 4-5) avec des vitesses angulaires opposées mais de même valeur.
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