Abstract: A sectional vane for vertical axis wind power generator includes a frame unit and a plurality of vane units. The frame unit is fixedly mounted to a main shaft of the wind power generator, and includes an upper frame member and at least one lower frame member. The upper and lower frame members are provided on inner side with an upper and a lower guide rail, respectively. The vane unit includes a vane body having an upper and a lower guide channel provided on a top and a bottom, respectively, corresponding to the upper and the lower guide rail. The vane units are assembled to the frame unit between the upper and the lower frame member through engagement of the guide channels with the guide rails. The sectional vane can be varied in height and area by providing different numbers of lower frame members and vane units.

Abstract: A sectional vane for vertical axis wind power generator includes a frame unit and a plurality of vane units. The frame unit is fixedly mounted to a main shaft of the wind power generator, and includes an upper frame member and at least one lower frame member. The upper and lower frame members are provided on inner side with an upper and a lower guide rail, respectively. The vane unit includes a vane body having an upper and a lower guide channel provided on a top and a bottom, respectively, corresponding to the upper and the lower guide rail. The vane units are assembled to the frame unit between the upper and the lower frame member through engagement of the guide channels with the guide rails. The sectional vane can be varied in height and area by providing different numbers of lower frame members and vane units.

Abstract: A vane for vertical axis wind power generator includes a vane body defining a rearward recess and having a front plate portion with a through hole; a first arcuate guide bar located in the recess with a second end connected to the vane body and a first end located in the through hole; an openwork screen fitted in the through hole and connected to the first end of the first arcuate guide bar; and a first movable baffle unit slidably fitted around the first arcuate guide bar and pivotally connected to the vane body to openably cover the openwork screen. When the rearward recess is against the wind, the first movable baffle unit covers the openwork screen for the rearward recess to effectively intercept the wind. When the rearward recess is before the wind, the first movable baffle unit naturally opens to reduce the air resistance to the vane.