Prime-mover dynamo plants – Fluid-current motors – Wind
Patent
1983-01-05
1985-01-29
Truhe, J. V.
Prime-mover dynamo plants
Fluid-current motors
Wind
416169R, 416197A, F01D 514, F04D 2938
Patent
active
044968485
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a device for harnessing wind energy.
Devices are known that make it possible to harness wind energy and that include, in particular, several generators connected together. The movements of these generators are made mutually dependent by an appropriate transmission (See French Pat. No. 1,194,781).
Other devices are known, such as the one described in French Pat. No. 2,291,380, which includes a motor using wind energy with the help of a vertical shaft, serving as a support for several rotors with a vertical axis, arranged in regular fashion around the shaft. However, such a device is not designed to connect the generators so as to concentrate their efforts with respect to the wind. Moreover, the design does not call for the orientation of the generators with respect to the direction of the wind, and, in addition, the generators are not protected from gusts of wind.
A device for harnessing wind energy has been described in French Pat. No. 77,14664 of the applicant and includes a central generator and a set of satellite generators, each generator being equipped with a rotor with blades, some means of orienting air currents inside the set of generators, and some means of concentrating the rotational thrust of the rotors of satellite generators, which allows still better harnessing of energy. However, such a device, although providing very satisfying results, is complex in its structure.
The present invention aims at reducing these drawbacks. One purpose of the invention is to harness wind energy by means of a device with a simple structure, easy to build, and economical.
Another purpose of the present invention is to provide a device of this type that stands up very well to wind and that, in addition, makes it possible to absorb sudden gusts of wind in order to protect the parts downwind of the harnessing device.
To achieve these aims, the invention proposes a device for harnessing wind energy that includes a central generator made up of a rotor and of at least two blades elongated axially in the vertical position, the blades being oriented radially, in a horizontal plane, and includes means of protecting the blades not subjected to the wind and means of supporting the generator, the device being such that the blades include means of harnessing kinetic energy. These means are cells called for by the design on the active surface area of the blades. The blades are solid as in known devices, but, on the other hand, they have cells on the surface subjected to the force of the wind, which catch the wind. Thus, the wind does not slide over this surface, but, on the contrary, rushes into the cells, which makes it possible to increase the amount of energy harnessed. Moreover, the blades are masked by means that are mobile in rotation around the rotor and that are placed in such a way that the blades advancing in the direction opposite to that of the wind are protected from it and that their movement is therefore not slowed down.
The following description, in the light of the drawings appended as a nonrestrictive example, will make it possible to understand better how the present invention can be implemented.
FIG. 1 is a horizontal sectional view of the device according to the present invention;
FIG. 2 is an overhead view of the device;
FIG. 3 is a view of a blade;
FIG. 4 is a view of the device according to the invention, and sectional according to line IV--IV of FIG. 1;
FIG. 5 is a view of a shock absorber making it possible to compensate for gusts of wind on the device according to the invention;
FIG. 6 is a sectional view according to line VI--VI of FIG. 5;
FIG. 7 is a schematic view of a transmission.
The device for harnessing wind energy according to the invention includes a central generator 1 made up of a rotor 2 and blades 3. These blades are at least two in number. They are elongated axially in the vertical position. They are oriented radially in a horizontal plane. A means of protection makes it possible to protect the blades that are not carried along according to the direction of the
REFERENCES:
patent: 1987316 (1935-01-01), Zimmer
patent: 3743848 (1973-07-01), Strickland
patent: 4047833 (1977-09-01), Decker
patent: 4134708 (1979-01-01), Brauser et al.
patent: 4260325 (1981-04-01), Cymara
Truhe J. V.
Wade Shelley
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