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    • 7. 发明授权
    • Windmill
    • 风车
    • US4191507A
    • 1980-03-04
    • US925423
    • 1978-07-17
    • Gary J. DeBerg
    • Gary J. DeBerg
    • F03D3/06
    • F03D3/067F05B2240/218F05B2280/30F05B2280/6001F05B2280/6002F05C2253/02F05C2253/025Y02E10/74
    • To reduce drag in a lightweight windmill, a vertical centrally located frame has three vertical windmill-vane arrays extending radially outward therefrom spaced circumferentially 120 degrees from each other about the rotatable framework. Each vane array includes a plurality of flat flexible sails rigged one under the other between leading and trailing horizontal arms in the array with an upper leading edge of each sail being directly fastened to a different one of the leading arms and a lower edge of each sail being fastened by flexible cords to a different one of the trailing arms so that when the wind blows in the direction of the leading arm, the sail billows outwardly to turn the framework but when the wind blows in the opposite direction the sails are lifted flat to provide low drag. In one embodiment, the arms are cables, stretched radially from the central vertical framework by other cables so that the entire structure is easily disassembled for shipment. The structure is made of hollow aluminum tubes, cords and fabric sails so as to be lightweight and efficient.
    • 为了减轻轻型风车中的阻力,垂直的中央定位的框架具有从其周向径向向外延伸的三个垂直的风车叶片阵列,其围绕可旋转的框架相互间隔120度。 每个叶片阵列包括在阵列中的前后水平臂之间彼此并排地配置的多个扁平柔性帆,每个帆的上前缘直接固定到不同的一个前臂上,每个帆的下边缘 通过柔性绳被固定到不同的一个拖臂上,使得当风吹向前臂的方向时,帆向外凸起以转动框架,但是当风向相反的方向吹风时,帆被平放 提供低阻力。 在一个实施例中,臂是电缆,通过其他电缆从中心垂直框架径向拉伸,使得整个结构容易拆卸以便运输。 该结构由中空铝管,电线和织物帆制成,以便轻便且高效。
    • 10. 发明授权
    • Self-fairing windmill vane
    • 自整流风车叶片
    • US4681512A
    • 1987-07-21
    • US871243
    • 1986-06-06
    • Maxwell K. Barnard
    • Maxwell K. Barnard
    • F03D3/06
    • F03D3/067F05B2240/221F05B2260/72F05B2280/30F05B2280/6001F05B2280/6002F05C2253/02F05C2253/025Y02E10/74
    • A windmill vane for use with a windmill having a vertical shaft. The vane comprises an open, rigid, planar, preferably semi-elliptical frame and a flexible sail on the frame. The frame can also be chevron shaped or semi-rectangular in shape. One end of the frame is affixed to the shaft, ad the other end is aligned therewith horizontally and radially outwardly from the shaft. The planar frame is oriented with a central portion leading the ends thereof relative to the instantaneous direction of movement of the frame around the shaft. The central portion of the frame is inclined at a 45.degree. angle upwardly from the frame ends relative to such instantaneous direction of movement. The sail is light weight, resilient, and preferably carried by a loose sleeve around the frame. The design of the vane ensures that the sail is full when moving with the wind and streams directly behind the frame when moving across and against the wind.
    • 与具有垂直轴的风车一起使用的风车叶片。 叶片包括开放,刚性,平面,优选半椭圆形框架和框架上的柔性帆。 框架也可以是V形或半矩形的形状。 框架的一端固定到轴上,另一端与轴水平地和径向向外对准。 平面框架被定向成具有中心部分,其中心部分相对于框架绕轴的瞬时运动方向引导其端部。 框架的中心部分相对于这种瞬时的移动方向从框架端部向上倾斜45度角。 帆是重量轻,有弹性的,最好由围绕框架的疏松的套筒携带。 叶片的设计可确保当风向和风向移动时直接在框架后方移动并抵挡风时,风帆已满。