GB2475552A

GB2475552A - Flapping wind generator

Info

Publication number: GB2475552A
Application number: GB0920508A
Authority: GB
Inventors: Rajendranath Balkee
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-23
Filing date: 2009-11-23
Publication date: 2011-05-25
Also published as: GB0920508D0

Abstract

A swinging flap type wind energy generator has vanes 1 comprising a curved mesh and a flexible cover 2 fixed along the radially outer edge. The cover 2 is thus pushed against the mesh 1 to receive wind force on one side of the axis, but can blow free of the mesh 1 on the other side, causing rotation. The rotor axis is horizontal, and there may be a generator 4 at each end of the axle. The axle may be supported on a U shaped horizontal arm (fork) 5 which is pivoted at the top of a tower. The other end of the arm has a counterweight 8 and a vane 6 to allow the rotor to face into the wind.

Description

FLAPPING WIND GENERATOR

DESCRIPTION

This invention relates to a Flapping Wind Generator and methods for using the force of wind for producing electricity and other useful output.

Wind generators, for useful output, are well known, but suffer from low wind power capture, resulting in low efficiency..

An object of this invention is to provide a Flapping Wind Generator, using a unique mechanical combination of known simple elements, which can be portable or fixed, and easy to manufacture and operate.

Accordingly, this invention provides a wind generator for producing electricity and other useful power, the device comprising of: a tower, portable or fixed, having one horizontally rotating armed-structure mounted thereon; the rotating armed-structure having a tail-end on one side of the vertical axle on the tower and a u-shape, horizontal front-end on the other side of the axle.; two generators, facing one another, having a long common rotor axle, fixed, one on each end of the U-Shaped solid horizontal arms; three curved, rigid, lightweight, rectangular wire mesh blades with fairly large holes fixed to the common rotor axle at 120 degrees interval; three flimsy, water-proof, flapping covers, of same sizes as the curved wire mesh blades, fixed one, on each external, horizontal end of the blades from the inside of the curvature; a rigid fin fixed vertically to end of tail-end of the armed-structure; a balancing weight fixed to the armed-structure.

The elements of the Flapping Wind Generator are scalable in size, depending on desired output and location.

Plurality of elements of the Flapping Wind Generator may be used to achieve desired output.

The Flapping Wind Generator can be made small and portable or huge and fixed.

DESCRIPTION

A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which: 1. Drawing 1/2 shows a lateral view of the Flapping Wind Generator.

2. Drawing 2/2 shows a top-to-bottom view of the Flapping Wind Generator.

3 As shown in drawings 1/2 and 2/2, the armed-structure tail-end (7) and front-end (5) is mounted on tower (10), rotating on pivot-axle (9).

4 Generators (4) are fixed on arms of U-shaped front-end (5) and curved rectangular wire mesh blades (1) with flimsy, water-proof flapping covers (2) fixed on their external ends, are fixed to common rotor-axle (3).

Rigid fin (6) is fixed to tail-end of anned-structure (7).

6 Balancing weight (8) is fixed to tail-end of armed-structure (7).

7 Once the installation of the Flapping Wind Generator is complete, fin (6) will guide the armed-structure and make blades (1) face the blowing wind directly.

8 The blowing wind will force cover (2) on the top wire mesh blade (1) to press against the inside of the blade, and cover completely the wire mesh holes on the blade (1) giving full wind-power capture area to blade, and making the blade (6) to flip over and turn common rotor-axle (3) of generators (4) 9 The blowing wind will force cover (2) on the bottom blade (1) and cover (2) on blade (1), at the back to flap away from the inside of these wire mesh blades, reducing completely the wind-power capture area, making almost zero negative drag on the system.

As the Flapping Wind Generator turns, the covers (2) will continuously press against the wire mesh blades (1) at their top positions, and flap away from the wire mesh blades (1) at the back and bottom positions, making the wind power to act continuously,only on the top blades, while turning the generators continuously on the same direction, due to the big differential drag.

11 Obviously, numerous variations and modifications can be made without departing from the spirit of the present invention. Therefore, it should be clearly understood that the form of the present invention, Flapping Wind Generator, described above and shown in the accompanying drawing is illustrative only and is not intended to limit the scope of the present invention.

Claims

FLAPPING WIND GENERATORCLAIMS1. A device for producing electricity or other power output, the device comprising of: a tower, portable or fixed, having a horizontally rotating armed-structure, on a vertical axle; a U-shaped solid horizontal arms, on one end of the armed-structure, holding two generators, one on either arms, and a common horizontal rotor axle; curved, rigid, lightweight, wire-mesh blades fixed to common rotor axle; flimsy, water-proof, flapping covers, of same sizes as curved wire-mesh blades, fixed one one each external, horizontal end of the blades, from the inside of the curvature; a rigid fin fixed vertically to other tailed end of armed structure.
2. A device according to claim 1, which uses both a vertical axle and a horizontal axle to turn a wind generator.
3. A device according to claim 1 and claim 2, in which vertical blades mounted on horizontal axle, also turn on vertical axle.
4. A device according to preceeding claims, which uses wire-mesh blades, to turn a wind generator.
5. A device according to preceeding claims, which uses flimsy flapping covers to turn a wind generator.
6. A device according to preceeding claims which uses U-shaped arms to hold a wind generator.
7. A Flapping Wind Generator substantially, as herein described and illustrated in the accompanying drawings.