Helical wind rotor and a method for manufacturing the same

Details Helical wind rotor and a method for manufacturing the same Helical wind rotor and a method for manufacturing the same

F - Mech Eng,Light,Heat,Weapons

03

D

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

Patent

CA 2294094

Helical wind rotor, comprising at least two blades (1) which, as observed in cross section, are of substantially equivalent shape and curve, and are located parallel with the rotational axis (o) and so that the blades (1) are arranged most suitably at equal intervals with respect to the rotation angle of a cylindrical co-ordinate system (o, z). In order to bring about helical form of the wind rotor, the blade cross sections (sp) are arranged to revolve in the longitudinal direction (z) of the wind rotor. The blade cross section (sp) belonging to the wind rotor is arranged substantially different from the shape of semicircle, so as to enable manufacturing of the blade of a substantially planar blank. The invention also relates to a method for manufacturing a wind rotor of the above presented type.

L'invention concerne une éolienne hélicoïdale comprenant au moins deux pales (1), lesquelles, observées en coupe, ont une forme sensiblement équivalente et courbée, et sont placées parallèles à l'axe de rotation (o) et de sorte que les pales (1) soient disposées, d'une manière la plus adaptée, à des intervalles égaux par rapport à l'angle de rotation d'un système de coordonnées cylindrique (o, z). Afin d'obtenir la forme hélicoïdale de ladite éolienne, les coupes transversales (sp) des pales sont agencées de manière à tourner dans le sens longitudinal (z) de l'éolienne. La coupe transversale (sp) des pales de l'éolienne est sensiblement différente de la forme d'un demi-cercle, de manière à permettre la production des pales à partir d'une ébauche sensiblement plane. L'invention concerne également un procédé de production d'une éolienne du type présenté ci-dessus.

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