| 摘要 |
A vertical axis wind-powered generator is designed to be mounted at the apex of a pitched roof, taking support from the roof structure itself. A vertical turbine shaft 13 is rotatably mounted by vertically spaced bearings 19 and 20. The lower of those bearings 19 is secured to a cross-beam 21 of the roof structure and the upper one of the bearings 20 is secured to the apex of the roof structure where rafters 22 meet. A drive portion 13b of the turbine shaft 13 extends up through the roof cladding to above roof height and supports a circular array of vertically aligned asymmetric aerofoil vanes 11 which are drivingly connected to the drive portion 13b of the turbine shaft 13 through radial spoke members 12. A generator 33 is located in the roof space and is directly driven by a portion 13a of the turbine shaft 13 between the bearings 19 and 20. |
