Windmill rotor and wind blades therefor

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

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F03D 1/06 (2006.01)

Patent

CA 2301506

With conventional windmills the wing blades used have a certain resilient flexability which, in connection with "front runners", implies that the wings in strong wind are bent inwardly towards the mill tower, i.e. the wing rotor should be placed with a required safety spacing from the mill tower. An associated forward displacement of the entire rotor involves high costs and has already been avoided in various unsuccessful manners. The invention provides for an improved solution of the problem in disclosing that the wing blades, per se, are designated with such a forwardly curved configuration that the wing tips, when the wings are mounted in a conventional manner on the wing hub, will be located with increased spacing from the side of the tower.

Dans les éoliennes conventionnelles, les pales utilisées présentent une certaine flexibilité élastique. Pour des éoliennes fonctionnant face au vent, cela implique qu'en cas de vent violent les pales sont courbées vers l'intérieur, en direction la tour. Le rotor de l'éolienne devra être placé à une distance de sécurité suffisante. Un déplacement avant associé de la totalité du rotor implique des coûts élevés et a déjà été tenté sans succès. La présente invention offre une solution améliorée à ce problème en ce que les pales sont conçues selon une configuration incurvée vers l'avant telle que lorsque les pales sont montées de manière conventionnelle sur le moyeu, les extrémités se trouvent à une distance accrue de la tour.

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