Aerogenerator

Abstract

The present invention relates to an aerogenerator formed by a rotor (2) with its corresponding rotary shaft (1), associated with an alternator or electric generator, and a casing (5) housing the rotor (2), in the form of a wind tunnel, which is open at one end and has a cross section matching the dimensions in elevation of the rotor, wherein two sections are defined in the opening of the casing (5) that defines the air inlet (7), said sections being located above and below the rotary shaft (1) of the rotor and comprising an open upper section and a lower section provided with curved fins (9) for redirecting the wind flow upwards, a C-shaped deflector (10) also being provided, having a diameter matching the diameter of the rotor. The rotor (2) includes blades (3) with a rectangular laminar configuration. The casing (5) includes side deflectors (6). The alternator of the generator is connected to energy storage batteries and, via the corresponding control electronics, to the power supply grid. The air inlet (7) includes a protective grating.

Description

[0001] DESCRIPTION

[0002] WIND GENERATOR

[0003] TECHNICAL SECTOR

[0004] The present invention relates to a device that has been specially designed to harness the power of the wind in the generation of electrical energy.

[0005] The object of the invention is to provide an electrical energy generating device that is scalable depending on the power to be obtained, easy to implement and very accessible when it comes to carrying out its maintenance.

[0006] BACKGROUND OF THE INVENTION

[0007] Although there are various types of wind turbines, both vertical-axis and horizontal-axis, these are mechanisms designed to be installed with their rotors at great heights, requiring complex and expensive structures and foundations, which has a very negative impact on both production and maintenance costs.

[0008] EXPLANATION OF THE INVENTION

[0009] The proposed wind generator fully satisfactorily resolves the aforementioned problem, based on a simple but effective solution, in which wind power is optimized by redirecting its flow in a positive direction, generating torque on the generator rotor.

[0010] To this end, the generator of the invention is constituted from an alternator whose shaft is associated through the corresponding transmission to a rotor intended to be rotated by the effect of the force of the wind, with the special feature that said alternator-rotor assembly is located within a casing that functions as a wind tunnel, which will have a section in accordance with the width and height of the rotor, defining an external air inlet that is divided into two sectors, located respectively above and below the axis of rotation of the rotor. More specifically, the upper sector will define a direct and tangential inlet to the rotor, and may include a series of horizontal fins that optimally redirect the wind over the upper half of the rotor, in case said wind is not of a completely perpendicular component to the air inlet of the wind tunnel.

[0011] At the same time, and to prevent the wind entering through the lower section of the wind tunnel from counteracting the torque generated in the upper section, a series of curved fins have been included in the lower section to change the direction of the incoming wind, in the direction of rotation of the rotor.

[0012] For its part, the rotor will have a horizontal axis of rotation, to which at least two blades are attached, which preferably will have a rectangular, flattened configuration, on whose external edges a small perpendicular perimeter partition is established that improves the use of the force of the incoming wind.

[0013] Finally, the device's air inlet may be assisted by a grid that prevents the entry of objects that could clog the rotor.

[0014] Otherwise, the electronics associated with the generator will be similar to those used in any type of wind generator, in which it is advisable to have means to regulate and stabilize the voltage generated by the alternator, allowing it to be connected to energy storage batteries and / or directly to the grid.

[0015] BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To complement the description that follows and in order to help better understand the characteristics of the invention, in accordance with a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description, in which the following has been represented for illustrative and non-limiting purposes:

[0017] Figure 1.- Shows a perspective view of a wind generator made in accordance with the object of the present invention.

[0018] Figure 2.- Shows a perspective view of the rotor that participates in the wind turbine of the invention.

[0019] Figure 3 finally shows a schematic longitudinal sectional view through an imaginary intermediate vertical plane of the generator of the invention. PREFERRED EMBODIMENT OF THE INVENTION

[0020] In view of the figures shown, it can be observed how the wind generator of the invention is constituted from an axis (1) to which a rotor (2) is associated, intended to be rotated by the effect of the force of the wind (4), rotor (2) which will preferably present blades (3) of rectangular laminar configuration, in which a perpendicular penimeter partition (11) is established in the form of an asymmetric "U" with respect to the axis of rotation.

[0021] The rotor shaft (1) will be associated through a transmission to an alternator or electric generator, not represented in the figures because it is a conventional element, eventually including regulating and stabilizing means for the voltage generated by the alternator, and may be connected, as previously stated, to energy storage batteries and / or directly to the electrical supply network.

[0022] In any case, and in accordance with one of the essential characteristics of the invention, as can be seen in figures 1 and 4, the rotor (2) is integrated into a casing (5) as a wind tunnel, which preferably has an elongated quadrangular prismatic configuration, open at one of its ends, where lateral deflectors (6) can be included to maximize the entry of air into said wind tunnel.

[0023] The casing (5) will have a section according to the elevation dimensions of the rotor, so that two sectors are defined in the air inlet (7), located respectively above and below the axis (1) of rotation of the rotor.

[0024] As previously mentioned, the upper sector will define a direct and tangential inlet to the rotor, and may optionally include a series of horizontal fins, not shown in the figures, which optimally redirect the wind onto the upper half of the rotor, while the lower sector will include curved fins (9) that redirect the wind flow upwards, in order to generate a flow that is equally tangent to the rotor (2) in its rotational direction, so that the air within the device adopts a circular trajectory that tends to accelerate.

[0025] On the bottom or opposite end to the air inlet, the wind tunnel will include a "C" shaped deflector (10), with a diameter corresponding to the diameter of the rotor, which allows the incoming air to be recirculated and makes it adopt a circular trajectory. In this way, a generator is obtained that can be installed either at ground level or at any height deemed appropriate, which allows the air flows to be recirculated and therefore increases energy efficiency, with a structure that is easily scalable to the specific needs of each case.

Claims

CLAIMS 1. Wind generator, characterized by comprising: • a rotor (2) with its corresponding axis (1) of rotation, associated through a transmission to an alternator or electric generator, and • a casing (5) that houses the rotor (2), like a wind tunnel, open at one of its ends, and that has a section according to the elevation dimensions of the rotor, where in the opening of the casing (5) that defines the air inlet (7) two sectors are defined, located respectively above and below the axis (1) of rotation of the rotor, an open upper sector and a lower sector in which curved fins (9) are established to redirect the wind flow upwards, having been provided that on the bottom or end opposite to the air inlet the wind tunnel will include a "C" shaped deflector (10), with a diameter according to the diameter of the rotor.

2. Wind generator, according to claim 1, wherein the rotor (2) includes blades (3) of rectangular laminar configuration, in which a perpendicular perimeter partition (11) is established in the form of an asymmetric "II" with respect to the axis of rotation.

3. Wind generator, according to claim 1, wherein the casing (5) includes lateral deflectors (6) in correspondence with its air inlet.

4. Wind generator, according to claim 1, wherein the generator alternator is connected through the corresponding control electronics to energy storage batteries.

5. Wind generator, according to claim 1, wherein the generator alternator is connected through the corresponding control electronics to the electrical supply network.

6. Wind generator, according to claim 1, wherein the air inlet (7) includes a protective grid.

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