| 摘要 |
A vertical axis windmill has an immovable, hollow circumferential frame having a plurality of peripheral openings, and rotatable turbine arranged inside the frame and connectable to a generator of electric energy, the turbine having a plurality of vanes each having a working side and a non-working side, and a plurality of gate elements turnably connected with the frame for closing and opening of the openings of the frame by wind flowing substantially in a horizontal plane, the gate elements and the vanes of the turbine being formed so that at one side of the frame the wind opens the gate members by turning them in a predetermined direction, so that at one side the wind turns the gate elements so as to open corresponding ones of the openings, enters the frame through the corresponding opened openings and acts on the working side of corresponding ones of the vanes so as to rotate the turbine in the predetermined direction, while at the same time at the other side of the frame the wind closes other offset gate members.
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