WIND COLLECTING TYPE WIND TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a wind collecting type wind turbine improve the rotation efficiency of blades and therefore the amount of electricity generated. SOLUTION: The wind turbine 21 is installed inside an inner wind tunnel body 22. The inner wind tunnel body 22 is formed so that its cross-sectional area is decreased linearly or curvedly from an inflow opening 22a for wind to a position where the wind turbine 21 is installed and the decreased cross-sectional area is enlarged linearly or curvedly or is kept at the same cross-sectional area from the position where the wind turbine 21 is installed to an outflow opening 22b for wind. An outer wind tunnel body 25 is formed so that its cross-sectional area is decreased linearly or curvedly from an inflow opening for wind to a position corresponding to the outflow opening 22b of the inner wind tunnel body 22 or its vicinity and the decreased cross-sectional area is enlarged linearly or curvedly or is kept at the same cross-sectional area from the position corresponding to the outflow opening 22b of the inner wind tunnel body 22 or its vicinity to an outflow opening 25b of the outer wind tunnel body 25. COPYRIGHT: (C)2011,JPO&INPIT