Small hydroelectric power generator
First Claim
1. A small hydroelectric power generator comprising:
- a main case with a fluid path, a hydraulic turbine which is arranged in said fluid pathway and turns as a predetermined flow of a fluid passes by, and a rotator connected to said hydraulic turbine to rotate together with said hydraulic turbine, said rotator acting as a rotor portion opposed to a stator portion, so that power is generated by rotating said rotor portion relative to said stator portion as said fluid passes by;
wherein a plurality of ejecting openings are provided in said fluid pathway outside the rotational path of said hydraulic turbine for reducing an area of a flow of said fluid and for ejecting said fluid;
said hydraulic turbine has a rotational center portion and blade members which are hit by said fluid ejected from said ejecting openings, said blade members being formed such that an inner peripheral end portion is joined to said rotational center portion and outer peripheral point portions are extended toward the vicinity of said ejecting openings; and
each of said outer peripheral point portions of said blade members is formed in an edge-shape.
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Accused Products
Abstract
According to the small hydroelectric power generator of the present invention, each of the outer peripheral portions of the hydraulic turbine which oppose to the ejecting openings are made in an edge shape. Therefore, the ejecting openings will not be blocked by the outer peripheral portions of the hydraulic turbine, keeping the hydraulic pressure constant. Also, since the water is constantly ejected from the ejecting openings at a plurality of locations, the hydraulic turbine rotates smoothly, reducing the rotational noise. Furthermore, the hydraulic pressure and the current are kept constant and in turn the vibration noise from the case and the current noise are reduced. Moreover, the square corners and the edges are eliminated from the back planes of the blade members to give an R-like round shape; therefore, a reverse torque is prevented from occurring to smoothen the current and in turn to reduce the noise.
58 Citations
6 Claims
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1. A small hydroelectric power generator comprising:
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a main case with a fluid path, a hydraulic turbine which is arranged in said fluid pathway and turns as a predetermined flow of a fluid passes by, and a rotator connected to said hydraulic turbine to rotate together with said hydraulic turbine, said rotator acting as a rotor portion opposed to a stator portion, so that power is generated by rotating said rotor portion relative to said stator portion as said fluid passes by;
wherein a plurality of ejecting openings are provided in said fluid pathway outside the rotational path of said hydraulic turbine for reducing an area of a flow of said fluid and for ejecting said fluid;
said hydraulic turbine has a rotational center portion and blade members which are hit by said fluid ejected from said ejecting openings, said blade members being formed such that an inner peripheral end portion is joined to said rotational center portion and outer peripheral point portions are extended toward the vicinity of said ejecting openings; and
each of said outer peripheral point portions of said blade members is formed in an edge-shape. - View Dependent Claims (2, 3)
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4. A hydroelectric power generator comprising:
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a case having a fluid path;
a hydraulic turbine disposed in the fluid pathway and operable to turn as fluid passes;
a plurality of ejection openings provided in the fluid pathway outside the rotational path of the hydraulic turbine and operable to eject the fluid;
the hydraulic turbine including a rotational center portion and a plurality of blades that are struck by the fluid ejected from the ejection openings, each blade having an inner peripheral end portion joined to the rotational center portion and an outer peripheral portion extended toward the vicinity of the ejection openings, wherein the outer peripheral portion of each blade has an edge-shape. - View Dependent Claims (5, 6)
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Specification