Improved turbine

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

Patent

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Details

F03D 1/06 (2006.01) F03D 1/04 (2006.01)

Patent

CA 2487108

A fluid turbine (30) for extraction of power from a moving fluid, particularly suitable as a wind turbine, includes a rotor (32) mounted to a support structure (31) for rotation about a horizontal axis (39), the rotor (32) having multiple blades (37) extending forwardly and outwardly from a hub (36) and a ring fairing (38) secured to the blades (37) at their outer ends and rotatable with the blades (37) concentrically about the axis. The ring fairing (38) has at least one peripheral location a radial cross section shaped to develop in operation a circulatory flow (60) about the cross section in such a direction as to increase the velocity of fluid flow between the ring fairing (38) and the hub (36).

L'invention concerne une turbine pour fluides (30) destinée à extraire de la forces d'un fluide en mouvement, utilisée en particulier comme une éolienne, comprenant un rotor (32) monté sur une structure de support (31) et destiné à tourner autour d'un axe horizontal (39). Ledit rotor (32) présente de nombreuses pales (37) s'étendant à l'intérieur et à l'extérieur d'un moyeu (36) et un carénage annulaire (38) fixé sur les pales (37) sur leur extrémité extérieure et rotatif avec les pales (37) de manière concentrique autour de l'axe (39). Ledit carénage annulaire (38) présente, sur au moins un emplacement périphérique, une section transversale radiale conçue pour développer, lors du fonctionnement, un flux circulatoire (60) autour de la section transversale, dans une direction choisie de manière à ce que la vitesse du flux de fluide entre le carénage annulaire (38) et le moyeu augmente.

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