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1. 发明授权

US5405246A Vertical-axis wind turbine with a twisted blade configuration 失效
标题翻译：具有扭转叶片配置的立轴风力涡轮机
公开(公告)号：US5405246A
公开(公告)日：1995-04-11
申请号：US129650
申请日：1993-09-30
申请人： Steven B. Goldberg
发明人： Steven B. Goldberg
IPC分类号： F03D3/06 , F03B3/12
CPC分类号： F03D3/061 , F03D80/40 , F05B2240/212 , F05B2240/301 , Y02E10/74 , Y10S416/08
摘要： A vertical-axis wind turbine includes two or more elongated blades connected to a rotor tower. The tower defines an axis of rotation and is linked, preferably via a gearbox or other torque-converting arrangement, to the shaft of a generator. Each blade is "twisted" so that its lower attachment point is displaced angularly relative to its upper attachment point. In a preferred embodiment, the radial distance of each blade from the axis of rotation varies between upper and lower attachment points such that the blade lies approximately along a "troposkein", which is the shape assumed by a string clamped at each end and spun about an axis passing through the ends of the string. The ratio between blade chord length and blade thickness is preferably constant over the length of each blade, with the middle of each blade approximately 80% as thick as its ends. The cross-section of the blades may be teardrop-shaped, shaped as an airfoil, rectangular, or curved in some other way.
摘要翻译：垂直轴风力涡轮机包括连接到转子塔架的两个或多个细长叶片。塔架限定了旋转轴线，并且优选通过齿轮箱或其它扭矩转换装置连接到发电机的轴上。每个叶片被“扭转”，使得其下连接点相对于其上连接点成角度地移位。在优选实施例中，每个叶片与旋转轴线的径向距离在上部和下部附接点之间变化，使得该叶片大致沿着“托普生酮”放置，其是由在每个端部夹紧的绳子假设的形状，并围绕穿过线的端部的轴。叶片弦长和叶片厚度之间的比率优选在每个叶片的长度上是恒定的，其中每个叶片的中部与其端部的厚度大约为80％。叶片的横截面可以是泪珠状，以其它方式成形为翼型，矩形或弯曲。

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