| 摘要 |
A vertical axis wind turbine (100) comprising a rotor (110) having a substantially vertical rotation axis z, said rotor (110) comprising a plurality of blades (111) arranged to rotate about its rotation axis z in consequence of the aerodynamic drag opposed to an air flow investing said blades (111). The wind turbine (100) also comprises a casing structure (120) in which the rotor (110) houses. The casing structure (120) comprises a lower plate (121) substantially orthogonal to the rotation axis z, said lower plate (121) defined by a first plurality of vertices V1,...,Vn, an upper plate (122) substantially orthogonal to the rotation axis z, said upper plate (122) defined by a second plurality of vertices V1',...,Vn', each vertex V1',...,Vn' of the second plurality corresponding to a vertex V1,...,Vn of the first plurality. The casing structure (120) also comprises a plurality of walls (125a-125d) arranged to connect the lower plate (121) and the upper plate (122), said walls (125a-125d) and said plates (121,122) defining a plurality of openings (126a-126d) arranged to work as inlet/outlet of said air flow into/from said casing structure (120). Each wall (125a-125d) is defined by one edge (127a-127d) that connects a vertex V1,...,Vn of the first plurality with a corresponding vertex V1'...,Vn' of the second plurality. The edge (127a-127d) is protruding outwards from the casing structure (120) with respect to a plurality of vertical ideal lines V1-V1',..., Vn-Vn' joining the vertex V1,...,Vn of the first plurality with the corresponding vertex V1',...,Vn' of the second plurality. |
