Three blade type vertical windmill device
The present invention relates to a windmill device rotating by a wind power. More particularly, to efficiently obtain rotating energy irrespective of a wind direction, the present invention is firstly characterized in that assuming that an outermost radius as a distance between the remotest position of each blade from the center of a vertical shaft and the vertical shaft is r 1 , an innermost radius as a distance between the nearest position of each blade to the vertical shaft and the vertical shaft is r 2 , and the angle (rad) of an arbitrary position r in an inner peripheral surface of the cross-section of the blade by regarding a line segment for connecting the remotest position from the vertical shaft to the vertical shaft as a reference is t (in this case, 0<=t<=2π/3), the form of the inner peripheral surface in the cross-section of each of the three blades satisfies a following formula: r=(r1−r2)×((t−2π/3)×2)/(2π/3)×2+r2. The present invention is secondly characterized in that fixed guide fins which do not rotate are provided in the outer periphery of the windmill device. The present invention is thirdly characterized in that wind introduced along the blades can be smoothly evaded outside the windmill without forming a vortex flow.
1. A three blade type vertical windmill device that rotates by a wind power and converts rotating energy to the other energy, said windmill device comprises:
a bottom plate having a vertical shaft protruding on its center; and
three plate type blades having their lower ends or upper ends fixed to the bottom plate and curved in their cross-sections,
wherein the vertical shaft is formed in a tubular shape and a prescribed number of vent through holes are opened on a tubular body.
2. A three blade type vertical windmill device that rotates by a wind power and converts rotating energy to the other energy comprising:
a bottom plate having a vertical shaft protruding on its center;
three plate type blades having their lower ends or upper ends fixed to the bottom plate and curved in their cross-sections, wherein the vertical shaft is formed in a tubular shape and a prescribed number vent through holes are opened on a tubular body; and
energy converting means for converting a rotating energy by the wind power of these blades into other energy, the blades being made of plates with curved cross-sections and being disposed at equal intervals under a state that one side ends are remote from the vertical shaft and the other side ends are near to the vertical shaft, wherein assuming that an outermost radius at a distance between the remotest position of each blade from the center of the vertical shaft and the vertical shaft is r 1 , an innermost radius as a distance between the nearest position of each blade to the vertical shaft and the vertical shaft is r 2 , and the angle (rad) of an arbitrary position r in an inner peripheral surface of the cross-section of the blade by regarding a line segment for connecting the remotest position from the vertical shaft to the vertical shaft as a reference is t (wherein, 0≦t≦2π/3), the form of the inner peripheral surface in the cross-section of the blade satisfies a following formula:
r =( r 1 −r 2)×(( t −2π/3)×2)/(2π/3)× 2 +r 2.
3. A three blade type vertical windmill device that rotates by a wind power and converts rotating energy to the other energy according to claim 2 ,
wherein a long side part of the blade is freely opened and closed on a point of the curved part as a center to freely adjust the opening degree of a short side part and the long side part, when a wind power is low, the opening degree is increased, and when the wind power is high, the opening degree is decreased.
4. A three blade type vertical windmill device that rotates by a wind power and converts rotating energy to the other energy comprising:
a bottom plate having a vertical shaft protruding on its center;
three plate type blades having their lower ends or upper ends fixed to the bottom plate and curved in their cross-sections, wherein the vertical shaft is formed in a tubular shape and a prescribed number vent through holes are opened on a tubular body; and
energy converting means for converting a rotating energy by the wind power of these blades into other energy, the blades being made of plates with curved cross-sections and being disposed at equal intervals under a state that one side ends are remote from the vertical shaft and the other side ends are near to the vertical shaft, wherein assuming that an outermost radius at a distance between the remotest position of each blade from the center of the vertical shaft and the vertical shaft is r 1 , an innermost radius as a distance between the nearest position of each blade to the vertical shaft and the vertical shaft is r 2 , and the angle (rad) of an arbitrary position r in an inner peripheral surface of the cross-section of the blade by regarding a line segment for connecting the remotest position from the vertical shaft to the vertical shaft as a reference is t (wherein, 0≦t≦2π/3), the form of the inner peripheral surface in the cross-section of the blade satisfies a following formula:
r =( r 1 −r 2)×(( t −2π/3)×2)/(2π/3)×2 +r 2,
wherein three fixed guide fins are provided upright at equal intervals along the outer periphery of a base for supporting the three blades at equal intervals and each fixed guide fin is inclined at an angle larger than a tangential direction relative to the rotating loci of the outer peripheral ends of the three blades.
5. A three blade type vertical windmill device that rotates by a wind power and converts rotating energy to the other energy according to claim 4 ,
wherein the width and angle of the fixed guide fin are set in such a manner that when the angle of a wind direction is at right angles to the fin, an outer end part of the fixed guide fin is larger than the rotating locus of the outer peripheral end of the blade.