Prime-mover dynamo plants – Fluid-current motors – Wind
Reexamination Certificate
1999-12-17
2001-06-19
Ponomarenko, Nicholas (Department: 2834)
Prime-mover dynamo plants
Fluid-current motors
Wind
C290S044000
Reexamination Certificate
active
06249059
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a wind power device disposed on the ground.
A conventional wind power system which has high efficiency and simple structure comprises two or three blade wheels which are rotatable around a horizontal axis and are pivotable around a vertical axis so that the blade wheel may always be perpendicular to the wind by suitable means.
The blade wheel is rotated by wind velocity at speed depending on diameter and shape of the blade and its pitch to drive a generator, so that wind power is converted into electric energy.
The blade wheel is rotated by low-density air flow. Even if diameter and area of the blade wheel are increased at maximum, about 45% of wind power energy which passes through the blade wheel is merely collected as useful energy actually.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a wind power device in which wind energy is effectively collected to achieve high efficiency power generation though a conventional blade wheel is employed in the device.
According to the present invention, there is provided a wind power device which comprises a wind guide which is gradually larger in diameter forwards, a twisted member which is twisted around a horizontal axis of the wind guide in the wind guide so that a twist angle may become larger rearwards, and a blade wheel disposed on the horizontal axis of the wind guide behind the twisted member in the wind guide to drive a generator.
The blade wheel can be rotated at high speed, thereby collecting wind power effectively and achieving high efficiency electric power generation.
REFERENCES:
patent: 3721290 (1973-03-01), Butler, Jr.
patent: 3936652 (1976-02-01), Levine
patent: 4031173 (1977-06-01), Rogers
patent: 4070131 (1978-01-01), Yen
patent: 4452046 (1984-06-01), Valentin
patent: 4499034 (1985-02-01), McAllister, Jr.
patent: 5982046 (1999-11-01), Minh
Oppenheimer Wolff & Donnelly
Ponomarenko Nicholas
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