| 摘要 |
<p>The objective is to improve the energy conversion efficiency of a vertical axis windmill. A wind collection apparatus (4) collects airflows passing in unspecified directions, in a nondirectional vertical axis windmill (3) having a rotary shaft perpendicular to the ground. The wind collection apparatus (4) is provided with wind collection blades (7) which are vertically provided around the vertical axis windmill (3) and which have surfaces radially extending from the vertical axis windmill (3); and wind collection members (8, 9) which cover the top and bottom sides of each wind collection blade (7) using a pair of wind collection surfaces (10U, 10L), wherein each air passage surrounded by the pair of wind collection surfaces (10U, 10L) is shaped into a horn-shaped passage which is tapered from the outside to the inside of the vertical axis windmill (3).</p> |
