| 摘要 |
A tower-like wind turbine, that is with vertical axis, comprising a cradle-like supporting structure (2) including and supporting a rotor with vertical axis (3), coaxial thereto, with a central shaft connected to an electric generator, wherein a rotor is provided extending between two horizontal bases (8, 13), the periphery thereof is connected by means of a crown of vertical axes (27) parallel to the central shaft (20), on each one a vertical blade being engaged apt to be rotated by 90° around its own axis; wherein the cradle-like supporting structure is swivelling so as to have the same up-wind and down-wind side, the cradle-like supporting structure comprising: a first device (A) (24) for rotating the blades arranged up-wind, to rotate by 90° the respective blades by changing the orientation thereof from tangential to radial; and a second device (B) (23) for rotating the blades arranged down-wind, to rotate by 90° the respective blades by changing the orientation thereof from radial to tangential; so that the blades at the second device (B) arrange tangentially with the respective concave side directed towards the inside by lining up to a half-cylindrical group of concatenated blades (12) lying on the side of the rotor travelling against the wind, whereas the blades at the first device (A), detaching from said half-cylinder, arrange radially, so that the blades lying on the side in favour of the wind show the concave side thereof to the direction of the wind (11); and so that, by activating the single second device of rotation (B), it is possible arranging all blades tangentially to form a complete peripheral cylinder so as to close to the wind said wind turbine (49). It is equipped with an underneath fixed base (1) wherein the generator lies, it can segment in several floors and be surmounted by a dome-like turbine, closeable to the wind too. |
