Sail system for winds turbines

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

Patent

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Details

F03D 11/00 (2006.01) F03D 3/06 (2006.01)

Patent

CA 2163698

A sail system for wind turbines of the vertical shaft type is disclosed. The sail system has a vertical rotating shaft, a plurality of support arms radially extending from an upper portion of the rotating shaft, and a sail pivoted to the tip of each support arm. The sail is provided with a longitudinal horizontal slit and is eccentrically pivoted to the tip of each support arm by means of a hinge. A holding rod is pivoted to an outside portion of the arm and penetrates the longitudinal slit of the sail. A spring is fitted over the holding rod between the spring stopper of the holding rod and the outer surface of the sail. The sail system not only prevents the sail from sagging due to the sail's weight, it also tightly pivots the sail to the arm regardless of the sail's configurations. The maximum turning angle of the sail relative to the arm is limited and adjusted by the spring. 14

Système de voile pour éolienne du type à axe vertical, comprenant un axe rotatif vertical, une série de bras d'appui se prolongeant radialement sur une partie supérieure de l'axe rotatif et une voile articulée sur l'extrémité de chaque bras. La voile comprend une fente longitudinale horizontale et est articulée, de façon excentrée sur le bout de chaque bras d'appui, à l'aide d'une charnière. Une tringle de blocage est articulée sur une partie externe du bras et pénètre dans la fente longitudinale de la voile. Un ressort est fixé au-dessus de la tringle de blocage entre la butée de ressort de cette dernière et la surface externe de la voile. Le système de voile empêche non seulement la voile de s'affaisser sous son poids, mais il la maintient solidement articulée sur le bras peu importe sa configuration. L'angle de braquage maximal de la voile par rapport au bras est limité et réglé par le ressort.

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