Blade for a device for generating energy from a fluid flow

Details Blade for a device for generating energy from a fluid flow Blade for a device for generating energy from a fluid flow

F - Mech Eng,Light,Heat,Weapons

03

B

F03B 17/06 (2006.01) F03D 1/06 (2006.01)

Patent

CA 2719144

A blade (2) for a device for generating energy from a fluid, comprising a driving surface (3) inside which a fluid is intended to flow in order to rotate the blade (2) about a rotational axis X0 which defines with axes Y0, Z0 an orthogonal reference frame X0, Y0, Z0, said blade being bounded by a leading edge (4) and a trailing edge (5), narrowing between the leading edge (4) and the trailing edge (5), running along a neutral fibre (10), characterized in that the projection of the neutral fibre (10) onto the plane X0, Y0 has a first curvature, the plane X0, Y0 being defined so as to contain the neutral fibre (10) at the leading edge (4). Application in particular to wind generators.

Pale (2) pour appareil de génération d'énergie à partir d'un fluide, comprenant une surface motrice (3) à l'intérieur de laquelle un fluide est destiné à s'écouler pour entraîner la pale (2) en rotation autour d'un axe de rotation X0 définissant avec des axes Y0, Z0 un repère X0, Y0, Z0 orthogonal, délimitée par un bord d'attaque (4) et un bord de fuite (5), se rétrécissant entre le bord d'attaque (4) et le bord de fuite (5), s'étendant selon une fibre moyenne (10), où la projection de la fibre moyenne (10) sur le plan X0, Y0 présente une première courbure, le plan X0, Y0 étant défini de sorte à contenir la fibre moyenne (10) au niveau du bord d'attaque (4). Application aux éoliennes notamment.

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