초록 ▼

A Savonius vertical axis wind turbine rotor, that is effective yet relatively easy to manufacture, includes spokes, vanes, and fasteners. Each spoke has a hub having a central opening, three arcuate ribs extending radially outwardly from the hub with inner (concave) and outer (convex) surfaces, and

A Savonius vertical axis wind turbine rotor, that is effective yet relatively easy to manufacture, includes spokes, vanes, and fasteners. Each spoke has a hub having a central opening, three arcuate ribs extending radially outwardly from the hub with inner (concave) and outer (convex) surfaces, and channels defined in at least one of the inner and outer surfaces. The vanes of sheet material generally conform to an inner or outer surface of a rib and have openings aligned with the channels. First fasteners pass through the openings and cooperate with second fasteners in the channels. Two of the spoke pieces may be joined by a bridging piece, and two spoke pieces by a clamp. A Savonius or helical rotor includes a generator, and a drive connecting the generator and rotor. The drive automatically increases the effective gear ratio between the generator and rotor as the speed of rotation increases.

대표청구항 ▼

What is claimed is: 1. A Savonius vertical axis wind turbine rotor comprising; a plurality of spokes, each spoke comprising a hub having a substantially central opening, three at least partially arcuate ribs extending substantially radially outwardly from said hub with inner and outer surfaces, and

What is claimed is: 1. A Savonius vertical axis wind turbine rotor comprising; a plurality of spokes, each spoke comprising a hub having a substantially central opening, three at least partially arcuate ribs extending substantially radially outwardly from said hub with inner and outer surfaces, and a plurality of channels defined in at least one of said inner and outer surface of each said rib; a plurality of vanes of sheet material generally conforming to an inner or outer surface of a said rib and having openings therein operatively aligned with said channels; and first fasteners passing through said openings into said channels and cooperating with second fasteners provided within said channels to securely hold said vanes to said ribs, so that said vanes assume an at least partially curved configuration presenting alternately a substantially concave and substantially convex curvature to wind as the rotor rotates about a substantially vertical axis.