JP2002257027A - Wind power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple and inexpensive wind power generator to be controlled easily for generating electricity by transducing the wind energy to the rotating force highly efficiently in a wide range of the wind speed without having a variable pitch mechanism such as conventional one. SOLUTION: A cross-flow type windmill B with a high rotation force at the wind speed of 10 m/see or lower and a radial-shaped windmill A with a high rotation force at the wind speed of 10 m/sec or higher are fixed respectively at the upper part and lower part of a shaft C coaxially. The shaft C is rotatably attached to a support D via bearings E and F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

[0002] The present invention relates to a wind power generator that generates wind power by converting wind energy into rotational force.

[Prior art]

[0003] In order to cope with a wide wind speed range, the conventional wind power generator needs to incorporate a mechanism for changing the pitch of the impeller, which has a drawback that the structure is complicated, the cost is high and the management is difficult. Was.

[Problems to be solved by the invention]

The present invention is intended to convert wind energy into rotational power with high efficiency over a wide wind speed range and generate power without having a variable pitch mechanism as in the prior art. It is intended to be easy.

[Means for Solving the Problems]

A cross-flow type windmill B having a high rotational force at a wind speed of 10 m / sec or less and a radial type windmill A having a high rotational force at a wind speed of 10 m / sec or more are arranged in the same manner as the axis C with A above and B below. Fix to the core. Then, the shaft C is rotatably attached to the support D via the bearings E and F.

【Example】

A support D is mounted on a solid base such as the ground or a building, and a shaft C is rotatably mounted on the support D by bearings E and F. A pulley G is attached to the lower part of the rotating shaft C, and the generator J is driven via a V-belt H.

[0007] A radial windmill as shown in FIG. 2 is provided above the rotary shaft C with flanges A21 and A22.
And is fixed to the shaft C via the shaft C so as to rotate together with the shaft C.

In this radial type wind turbine, four blades A1 are arranged at equal intervals, the upper part is fixed to the flange A21, and the lower part is fixed to the flange A22.

A cross-flow type wind turbine as shown in FIG.
And is fixed to the shaft C via the shaft C so as to rotate together with the shaft C.

The cross-flow type wind turbine has six blades B1.
Are arranged at equal intervals, the upper part is fixed to the flange B21, and the lower part is fixed to the flange B22.

In the cross flow type wind turbine B, as shown in FIG. 6, the blade B1 is curved and a plurality of blades are fixed between upper and lower flanges B21 and B22 so as to form a spherical shape as a whole. By doing so, the deformation of the blade B1 due to the centrifugal force can be reduced, which is effective in terms of proof stress.

【The invention's effect】

By using a plurality of different wind turbines as described above, it becomes possible to efficiently convert the energy of the wind power into rotational force in a wide range of wind speeds, so that a complicated and expensive variable pitch mechanism is not required. This is a wind power generator that enables high power generation efficiency.

[Brief description of the drawings]

FIG. 1 is an overall side view showing the present invention.

FIG. 2 is a plan view of a radial windmill A.

FIG. 3 is a plan view of a cross-flow type wind turbine B;

FIG. 4 is a side view of a cross flow type wind turbine B.

[Explanation of symbols]

 A1 is a radial windmill blade A21 is an upper flange of a radial windmill A22 is a lower flange of a radial windmill B1 is a crossflow windmill blade B21 is a flange of a crossflow windmill upper blade B22 is a crossflow windmill The flange below the wind turbine blades C is the wind turbine shaft D is the strut E, F is the bearing G, I is the pulley H is the V belt J is the generator.

Claims (1)

[Claims] 1. A radial wind turbine A and a cross flow wind turbine B are fixed to a shaft C concentrically. Then, the shaft C is mounted on a support D via a bearing, and is rotatable. With the above configuration, a wind power generator aimed at obtaining a large torque in a wide wind speed range.