Fluid Turbine Rotor Blade
AssigneeAdvanced Renewable Concept Industries Inc.
InventorRobert Lothar Monteith
Life of this patent
Estimating the term…
Abstract
A fluid turbine has semi-spherical, hollow blades arrayed about a vertical axis, and a passive wildlife-deterrent system using ultraviolet coloration of the rotor blades. The turbine's blade shape reduces drag on a convex side and increases drag on a concave side. Part of the center of the array of rotor blades is open, allowing flow through the center of the array. The spherical form enhances fluid flow through the center of the array and results in rotational force on a downwind blade, and directs fresh air into bypass flow.
Claims7
A rotor blade for a vertical axis fluid turbine comprising:
- a revolute surface with concave side and a convex side, a vertical edge and an edge that lies on the surface of a datum sphere;
- and
- a substantially vertical central axis parallel to the vertical edge through the center of said datum sphere;
- and
- a space between said vertical central axis and said vertical edge of said revolute surface;
- and
- a surface perpendicular to said revolute surface, engaged along said edge that lies on the surface of a datum sphere and coincident with said datum sphere;
- wherein fluid flowing over said concave side exerts a force about said central axis, and is compressed by said surface perpendicular to said revolute surface as the fluid moves off the surface.
A vertical axis fluid turbine comprising:
- a rotor assembly having at least two rotor blades;
- each rotor blade in said rotor assembly having a revolute surface bent to a concave side and a convex side, a vertical edge and an edge that lies on the surface of a datum sphere;
- and
- a substantially vertical central axis parallel to the vertical edge of said at least two rotor blades, said central axis extending through the center of said datum sphere;
- and
- a space between said vertical central axis and said vertical edge of said revolute surface on each of said at least two rotor blades;
- and
- each of said at least two rotor blades having a surface perpendicular to said revolute surface, engaged along said edge that lies on the surface of a datum sphere and coincident with said datum sphere;
- and
- each rotor blade in said rotor assembly having a semi spherical vertical cross section;
- wherein
- fluid flowing over one of said at least two rotor blades flows through said space between said vertical central axis and said vertical edges and then flows over another of said at least two rotor blades and is compressed by said surfaces perpendicular to said revolute surfaces as the fluid exits the rotor assembly.
A vertical axis fluid turbine comprising:
- a rotor assembly having at least four rotor blades;
- each rotor blade in said rotor assembly having a revolute surface bent to a concave side and a convex side, a vertical edge and an edge that lies on the surface of a datum sphere;
- and
- a substantially vertical central axis parallel to the vertical edge of each of said at least four rotor blades, said central axis extending through the center of said datum sphere;
- and
- a space between said vertical central axis and said vertical edge of said revolute surface on each of said at least four rotor blades;
- and
- each of said at least four rotor blades having a surface perpendicular to said revolute surface, engaged along said edge that lies on the surface of a datum sphere, said surface being coincident with said datum sphere;
- and
- each rotor blade in said rotor assembly having a semi spherical vertical cross section;
- wherein
- fluid flowing over one of said at least four rotor blades flows through said space between said vertical central axis and said vertical edges and then flows over another of said at least four rotor blades, exerting a force on each, and said fluid is compressed by said surfaces perpendicular to said revolute surfaces as the fluid exits the rotor assembly at a higher velocity than the ambient flow.
Dependencies are inferred from the claim text.