System and method for efficient wind power generation
AssigneeWing Power Energy
InventorKahoru Watanabe
Life of this patent
Estimating the term…
Abstract
A system and method for efficient wind power generation is provided. The system includes a shaft that rotates around a vertical axis, a plurality of blades, and a plurality of arms that couple the blades to the shaft. The blades are configured to have a rounded, symmetrical design which minimizes the effects of lift. The blades are also configured to include a notched portion for capturing wind and using it to propel the blades. The blades may also be configured to include winglets, which reduce vortex shedding, drag, and noise, and could also reduce friction on the bearings caused by gravity.
Claims18
A windmill comprising:
- a shaft that rotates around a vertical axis;
- a plurality of blades, each blade having symmetrical shape along a width and height, each blade having a first end and a second end connected by a top surface and bottom surface, said top surface and said bottom surface terminating at a rounded front edge to enable air to flow across the top surface and the bottom surface at a same speed, and a rear edge, each of said plurality of blades including wind scoop portion formed at a rear end portion of a lower face of the blade, and spanning a predetermined length of said blade, the wind scoop portion of each blade facing inward or outward from the rotating shaft, said plurality of blades vertically positioned at an outer periphery of said rotating shaft;
- and
- a plurality of arms, wherein at least one of each of said plurality of arms connects at least one of each of said plurality of blades to said rotating shaft, each one of the blades parallel to a plane of rotation around the vertical axis to eliminate a lift away from a center of rotation.
A method of using windmill, said method comprising the steps of:
- installing a shaft that rotates around a vertical axis;
- attachably coupling a plurality of arms circumferentially around said rotating shaft, each of said plurality of arms having a first end and a second end, said first end being attachably coupled to said rotating shaft;
- attachably coupling a plurality of blades to said plurality of arms, each blade having symmetrical shape along a width and height, wherein each of said plurality of blades is attachably coupled to at least one of said plurality of arms, said plurality of blades having a first end and a second end connected by a top surface and bottom surface, said top surface and said bottom surface terminating at a rounded front edge, and a rear edge, said plurality of blades vertically positioned at an outer periphery of said rotating shaft parallel to a plane of rotation around the vertical axis to eliminate a lift away from a center of rotation;
- providing a wind scoop portion on each of said plurality of blades to capture wind, said wind scoop portion formed at a rear end portion of a lower face of the blade and spanning a predetermined length of said blade, the wind scoop portion of each blade facing inward or outward from the rotating shaft;
- and
- distributing air flow across said top surface and said bottom surface of said plurality of blades to maintain a same air pressure at said top surface and said bottom surface.
Dependencies are inferred from the claim text.