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In a vertical axis wind generator incorporating a circular turbine supported by an uppermost part of an upstanding support, a stator surrounding and coaxial with the turbine comprises an upper annular body positioned adjacent and or above the upper end of the turbine and having an uppermost surface

In a vertical axis wind generator incorporating a circular turbine supported by an uppermost part of an upstanding support, a stator surrounding and coaxial with the turbine comprises an upper annular body positioned adjacent and or above the upper end of the turbine and having an uppermost surface which over at least a part of its radial width is inclined downwardly towards the vertical axis, a lower annular body positioned adjacent and/or below the lower end of the turbine and, extending lengthwise between the annular bodies, a plurality of circumferentially spaced blades define the venturi. Preferably, the undersurface of the lower annular body over at least a part of its radial width is inclined upwardly towards the vertical axis. The wind energy convertor will convert into mechanical energy the energy of a wind blowing in any direction and is capable of self-starting, irrespective of the direction of the wind.

대표청구항 ▼

An improved wind energy convertor of the type having an upstanding support having a central vertical axis, a substantially circular turbine rotatably supported by the support whereby said turbine is freely rotatable about said vertical axis, said turbine having an upper end and a lower end and havin

An improved wind energy convertor of the type having an upstanding support having a central vertical axis, a substantially circular turbine rotatably supported by the support whereby said turbine is freely rotatable about said vertical axis, said turbine having an upper end and a lower end and having a plurality of circumferentially spaced blades extending lengthwise with respect to the support and, coaxial with and surrounding a vertical axis of the turbine, a stator having an upper annular ring having a central opening therein, said upper ring positioned adjacent and above the upper end of the turbine, a lower annular ring having a central opening therein, said lower ring positioned adjacent and below the lower end of the turbine, and a plurality of circumferentially spaced venturi blades extending lengthwise between the annular rings which define, between adjacent blades, a plurality of venturi through which wind is directed on to the blades of the turbine, wherein the improvement comprises said upper annular ring having an upwardly facing top frusto-conical surface and a downwardly facing bottom frusto-conical surface, each of said top and bottom surfaces of the upper annular ring inclining downwardly towards the central vertical axis over substantially the entire width of the upper annular ring from an outer peripheral edge to an inner circumferential edge thereof whereby wind blowing across and over the top of the outer peripheral edge of the upper annular ring towards the central vertical axis is deflected over the downwardly inclined upwardly facing top frusto-conical surface of the upper annular ring to cause such turbulence in the wind that the air pressure in the central opening bounded by the upper annular body is decreased causing wind blowing through the venturi and against the blades of the turbine and driving the turbine rotatably about said central vertical axis to be drawn upwardly within the turbine and out of the upper annular ring through the central opening therein.