Wind turbine rotor with the vertical rotation axis

F - Mech Eng,Light,Heat,Weapons – 03 – D

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F03D 3/06 (2006.01)

Patent

CA 2701197

The rotor has, connected with the hub (1), at least two horizontal supports (2) on the ends of which are rotor blades (3) of a symmetrical and concavo-convex aerodynamic profile with the chord lengths (b1, b2) and the thickness of the profile diminishing towards both wing ends (3a, 3b). The upper wing (3a) and the lower wing (3b) of the rotor blade (3) are radially deflected from the central zone (3c) outwards. The length of the chords (b2) of the profile of both wing ends (3a, 3b) and the chord length (b1) in the central zone (3c) are approximately inversely proportional to the radii of its location in relation to the axis of the rotor's rotation. The deflecting angle of the lower wing (3b) can be greater than the deflecting angle of the upper wing (3a) or the length of the lower wing (3b) can be greater than the length of the upper wing (3a). The specification of the rotor gives a uniform intensity of consuming wind power at the length of the wings and generally in the support only tensile stress is generated while the

Le rotor comporte, reliés au moyeu (1), au moins deux supports horizontaux (2) sur les extrémités desquels sont situées des pales de rotor (3) ayant un profil aérodynamique symétrique et concavo-convexe, les longueurs des cordes (b1, b2) et lépaisseur du profil diminuant vers les deux extrémités daile (3a, 3b). Laile supérieure (3a) et laile inférieure (3b) de la pale de rotor (3) sont défléchies radialement de la zone centrale (3c) vers lextérieur. La longueur des cordes (b2) du profil des deux extrémités daile (3a, 3b) et la longueur de corde (b1) dans la zone centrale (3c) sont approximativement inversement proportionnelles aux rayons de leur emplacement en relation avec laxe de rotation du rotor. Langle de déflexion de laile inférieure (3b) peut être supérieur à langle de déflexion de laile supérieure (3a) ou la longueur de laile inférieure (3b) peut être supérieure à la longueur de laile supérieure (3a). La spécification du rotor donne une intensité uniforme de consommation de lénergie éolienne sur la longueur des ailes et généralement, dans le support, seule une contrainte de traction est générée tandis que le risque de battement est pratiquement éliminé.

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