Power generation apparatus
OwnerOrville J. Birkestrandinventor
Life of this patent
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Abstract
A power generation apparatus comprises a rotor rotatably mounted to a support and a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream. Each vane includes a wing-shaped main blade having leading and trailing edges, and a co-extensive conditioner blade having leading and trailing edges. The conditioner blade is spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit. A lift-varying device boarders the slot to vary the lift produced by that vane inversely to the speed of the moving fluid stream so that the rotor turns at a relatively constant rate. The rotor, driven by wind or water, may be coupled to the armature of an induction motor/generator to produce electric power.
Claims20
Power generation apparatus comprising a rotor rotatably mounted to a support, a plurality of vanes extending radially out from the rotor and positioned to be engaged by a moving fluid stream, each vane including a wing-shaped main blade having opposite surfaces, a leading edge and a trailing edge, a co-extensive conditioner blade having opposite surfaces, a leading edge and a trailing edge and being spaced parallel to the main blade so as to define therebetween a slot having an entrance and an exit, and a lift varying device bordering the slot in each vane to vary the lift produced by that vane inversely to the speed of the moving fluid stream.
Dependencies are inferred from the claim text.