Prime-mover dynamo plants – Fluid-current motors – Wind
Patent
1999-11-26
2000-11-14
Mullins, B
Prime-mover dynamo plants
Fluid-current motors
Wind
310156, 290 54, 416244R, H02K 718, F03D 306, F03D 900
Patent
active
061474150
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a permanent magnetic dynamo which can generate electricity by the use of force of a wind. To be more precise, it concerns a wind-force type permanent magnetic dynamo whose a drive blade rotates regardless of the wind direction. Namely, among the several objects of the present invention are the provision of a permanent magnetic dynamo capable of collecting air current; the provision of such dynamo which is reducing the size of a horizontal drive blade; the provision of such dynamo which is preventing to happen to a cogging phenomenon (revolving with a trembling caused by an attracted phenomenon of the magnetic force when a motor starts); and the provision of such dynamo which is reducing the weight of dynamo. Moreover, the permanent magnetic dynamo can be provided at the wind blowable places such as a camp site, hill, top of building, mountain hut, ship, or automobile.
BACKGROUND OF THE INVENTION
An exemplary conventional wind-force type permanent magnetic dynamo is disclosed in Japaneses Patent applicatioin Laid-Open (kokai) No.8-128383, in which drive blades rotate regardless of the wind direction.
In the embodiment section of that publication, there is described a dynamo comprising a plurality of cage-forming bars which stand on a cylindrical accommodating base at predetermined circumferential intervals and each bar having an arcuate wind guide surface on the inner sides thereof; a dome-shaped roof fixed on the upper ends of the bars; a hollow rotary shaft disposed within the space formed by the cage-forming bars and having radial rotary blades; a permanent magnet rotor fixed to the lower end of the hollow rotary shaft and having an annular permanent magnet; and a stator which is disposed along the inner circumferential wall of the accommodating base to surround the permanent magnet rotor and has stator windings. Each of the cage-forming bars has a flattened wing-like cross section, while each of the rotory blades has a longitudinally extend curved shape for receiving the wind that enters the space formed by the bars.
In the above-described structure, most of wind blown against the cylindrical accommodating base passes therethrough with no effect, while wind impinging laterally against the bars enters the structure through clearances between the bars. As a result, the wind passes through the clearances while rotating the rotary blades.
Accordingly, the part of wind that rotates the rotary blades receives resistance from the surface of the cage-forming bars and must pass through the clearances between the bars, so that a wind force is decreased. Further, a sufficient rotational force cannot be obtained unless each of the rotary blades is formed in the shape of a large curved plate that extends longitudinally. Therefore, the dynamo cannot be made compact. Further, since the rotor and the stator are simple annular members, the length of the stator winding can not be increased, resulting in impossibility of increasing the amount of electricity generation.
Accordingly, the objects of a permanent magnetic dynamo of the present invention are provided as follows; wind gatherable base to a horizontal drive blade, so that the horizontal drive blade can be rotated in efficiency; length of a stator winding is longer than that of the stator winding the conventional invention; and
DISCLOSURE OF THE INVENTION
A permanent magnetic dynamo according to the present invention (the invention described in claim 1) comprises a wind gatherable stand 1 having a tapered outer wall surface 4a that extends from the lower end thereof toward the upper end thereof in order to guide wind upward; a roof 11 supported by support shafts 10 fixedly standing at the peripheral edge of the wind gatherable base 1 such that an open space 17 is formed above the wind gatherable stand 1;a rotary shaft 12 rotatably supported by the roof 11 and the wind gatherable stand 1 and having at its upper end horizontal drive blade 2 located in the open space 17; a permanent magnetic rotor 20 dispo
REFERENCES:
patent: 4318019 (1982-03-01), Teasley et al.
patent: 4857753 (1989-08-01), Mewburn-Crook et al.
Greigg Edwin E.
Greigg Ronald E.
Mullins B
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