WO2016205913A1

WO2016205913A1 - A wind turbine with leveraged aerodynamic blades

Info

Publication number: WO2016205913A1
Application number: PCT/BR2016/050144
Authority: WO
Inventors: Luiz Roberto TAVARES
Original assignee: Tavares Luiz Roberto
Priority date: 2015-06-23
Filing date: 2016-06-23
Publication date: 2016-12-29
Also published as: BR202015015126Y1; BR202015015126U8; BR202015015126U2

Abstract

The present invention relates to a product of the area of clean and renewable energy. Its object is an unprecedented arrangement of conical blades of elongate "shell' type, for moving vertical-axis wind turbines, enabling more concentration and force to drive and move the vertical shaft. The blades are interconnected by means of a horizontal support circular bar, forming a sort of flywheel that strengthens the structure of the turbine, making it more resistant to strong winds, besides distributing equally, over the blades, the horizontal forces of the wind acting on them, resulting in stability to the torque. The blades are long, designed intentionally in this way to capture the Wind forces at a distance from the rotation shaft to increase the torque on its shaft. Since the resulting of the wind forces concentrates at a point away from the rotation shaft, a high torque is produced with multiplying lever effect on the central shaft. The turbine may further have upper and/or lower diagonal bars or cables, forming an arrangement similar to a latticework for supporting the weight or the vertical forces that act on the blades, centralizing them on the vertical rotation shaft. The turbine will be fixed to the movable part of a special shaft bearing with gas suspension that will have a compartment filled with a gas that has lift property to keep the turbine suspended, absorbing all or almost all its weight, facilitating rotation and reducing friction, noise and, as a result, increasing efficiency.

Description

Specification of the Patent of Invention for "A WIND TURBINE WITH LEVERAGED AERODYNAMIC BLADES"

[001 ] The present invention relates to an unprecedented arrangement of elongate shell-type blades to move vertical-axis wind turbines, enabling more concentration and force to drive and move the vertical shaft.

[002] The blades are interconnected by horizontal-lift circular bars, which form a sort of flywheel. The blades are long, designed to capture the wind force, chiefly the dragging force, at a certain distance from the axis of rotation, in order to increase the torque on their shaft.

[003] Since the resultant of the Wind forces fail onto a point away from the axis of rotation, a high torque with lever effect multiplying theses forces on the central shaft, which can move the shaft of electric generators. The longer the blades the higher the torque on the central shaft.

[004] There is also a more uniform distribution of these forces over ail the blades, as a result of the circular bars which we call flywheels and interconnecting them at the height of the cone peak, resulting in an effort in the turbine structure, making the latter very resistance to strong winds, break of the blades and durable, besides imparting more stability to the torque.

[005] The turbine may further have upper and/or lower diagonal bars or cables for supporting the weight or the vertical forces that act on the blades. These diagonal bars or cables are united to the horizontal-lift circular bars at the height of the cone beak or at a point close to the cone beak of the blades and to the rotary nacelle, at the upper tower and/or at the lower part of the rotary nacelle, forming an arrangement similar to a latticework.

[006] The turbine will be fixed to the movable part of a special shaft bearing with gas suspension, which will have a compartment filled with a preferably inert gas having rising property, in order to keep the turbine suspended and absorbing the all or almost ail its weight, thus reducing friction, noise and, as a result, the inertia to start the rotation movement and obviously resulting in greater efficiency.

[007] Wind turbines are pieces of equipment designed to extract kinetic energy from the wind and convert it into rotational mechanical energy, basically to drive shafts of electric generators with a view to generate electric energy.

[008] They may have multiple blades, but for horizontal-axis turbines the practice and studies have demonstrated that three blades have been the ideal number. On the other hand, for vertical-axis turbines the ideal number of blades should remain between three and six, depending on the model.

[009] They differ from one another basically by the position of their axis of rotation and also by the design of their aerodynamics. According to the position of their axis of rotation they are classified as horizontal-axis turbines or vertical-axis turbines, and the various shapes differ basically by the design of their blades.

[0010] The horizontal-axis turbines, which are the most efficient at present, have a standard propeller shape similar to a windmill propeller, which turn on a plane perpendicular or almost perpendicular to the wind direction and, for this reason, they should have a directing system for placing the blades or propellers always facing the wind direction. They use both the dragging force and the lifting force of the wind, depending on the aerodynamic design of their blades.

[001 1 ] The most efficient ones have been those whose blade shape has an aerodynamic design that manages to extract as much as possible lift force from the wind to drive their shaft. So, the blades of such turbines are usually are designed so as to be similar to an aircraft blade, which takes advantage of the lift force of the wind. These turbines are good and relatively efficient for the present-day standard.

[0012] On the other hand, vertical-axis turbines have more varied blade shapes and designs. There is no single design pattern as in the case of horizontal-axis turbines.

Description of the prior art

[0013] Some of the main and best known vertical-axis turbines are those of the "Savonius" and "Darrieus" types. Savonius-type turbines use chiefly the dragging force of the wind, whereas Darrieus-type turbines use chiefly the lift forces of the wind. [0014] One of the main advantages of the vertical-axis turbines is the fact that they do not need directing mechanisms to follow the variations of the wind, which reduces the complexity and the cost of the equipment.

[0015] In a general way, they are large-size turbines, their weight partly limiting their efficiency, since the blades are almost always united to the vertical shaft horizontally, and the larger the size the greater the weight, and the heavier they are the greater their inertia and, as a result, the lower they efficiency and also the greater the risk of the blades being damaged (broken), with maintenance of the shaft bearings, etc.

[0016] According to their aerodynamic design, they can make use of both the dragging force of the wind and the lift force, or both of them at the same time. Since they operate in smaller dimensions, do not need directing systems and do not have to be away from the ground, besides other favorable characteristics, they are more suitable for operation in urban and residential areas.

[0017] The design of their aerodynamics has a further reason for concern to the designers, namely the fact that their blades have different positions with respect to the direction of the wind force. As the turbine turns, more favorable unfavorable positions, and more unfavorable positions occur with respect to the direction of the wind flow, because their rotation on the horizontal plane, which is the same plane of the wind flow.

[0018] The more favorable positions are those in which their blades, regardless of their shape, remain in more frontal positions with respect to the wind, which exerts on them forces in the direction favorable to the rotation of the blades. On the other hand, the more unfavorable positions are those opposite the previous ones, that it, when the blade, continuing its rotation motion, reaches the position where it begins to meet the wind exerting force contrary to the rotation movement of the turbine blades. In these positions, the winds exert on the blades forces that tend to cause the turbine to turn in the direction opposite the normal rotation motion, but it continues the rotation motion due to aerodynamic factors that cause the forces that act in the rotation direction desired for the turbines to prevail, since the dragging or lift force of the wind exerted on the blades in the position favorable to the rotation direction is greater than in the unfavorable positions, due to the aerodynamic design of the blades; otherwise these turbines will not function.

[0019] Due to the larger number of variable to be considered in their design, which results in greater difficulty for their development, one has not obtained very efficient vertical-axis turbines that can generate energy on a significant production scale, which limits their application, without reaching efficiency suitable for the small demands for energy.

[0020] In a research directed to the study of the technological scope of the present invention, we have found the following document:

[0021 ] WO 2007/042540 - "Pa de Turbina Eoiica", with priority date of October 13, 2005, which relates to a wind turbine blade which comprises a root area, an enclosure inside the blade at the root area, and means for draining off water that condensates inside the blade. The draining means comprise four bores formed on the surface of the blade at the root area, two at one side of the enclosure and two at the other side; as for their angular position on the surface of the blade, two bores are located on the suction side of the blade and two other bores are located on the pressure side of the blade. The bores are provided with a protrusion protruding outwards from the outer surface of the blade, so that water flowing down the outer surface of the blade is prevented from entering the blade.

[0022] According to the above summaries, the processes mentioned do not have similarity with the object of the present, for which reason we consider that there are no technical or legal impediments to obtaining the protection requested.

Problems encountered in the prior art

[0023] Some of the problems and limitations of the horizontal-axis turbines are as follow:

[0024] Horizontal-axis turbines have functioning range that is limited to wind velocities and function better only with medium velocities ranging from 7 m/s to 18 m/s, and the average velocity range may vary according to the model. Larger turbines, which are the most widely used and efficient, do not operate with weak winds of about 3,5 m/s, since they exhibit great inertia, and the strong winds of over 25 m/s represent a great danger and are a point of concern for the integrity of the turbine and may seriously damage the blades or the system as a whole. So they need a safety and protection system that is capable of changing the position of the blades or a part thereof with respect to the Wind, in order to decrease or even stop their rotation with a view to protect them from Strong winds.

[0025] They must be positioned so as to receive the wind frontaliy and they must have a directing system to position them always in the front direction of the wind.

[0026] They must be large, as compared to the vertical-axis turbines, in order to reach reasonable degrees of efficiency and to achieve their objectives.

[0027] Ail their pieces of equipment, such as generators, gears and accessories, besides the safety and protection devices, must be installed at the top of the supporting towers, a fact that increases considerably the weight on the structure of the towers and, as a result, the cost of the facilities of these turbines.

[0028] All these limitations, besides making these horizontal-axis wind systems too expensive, also limit the places where they are installed to rural or offshore areas that have a regular wind regime of medium velocity, so that generation of energy on a large scale can take place, a fact that demonstrates their economic viability only at places where there are very favorable atmospheric conditions and for the production of large amount of energy.

[0029] A few of the problems and limitations of the vertical-axis turbines are as follows:

[0030] One of the factors that limit the efficiency of these turbines relates to the narrow and proportional relation existing between size and weight, that it, the larger the size the heavier the blade weight. In a general way, they are turbines that do have too large dimensions, partly due to the fact that the weight limits their efficiency, chiefly with weak winds, since the blades almost always remain united to the vertical axis horizontally. With one blade in the horizontal position, the larger its size the bigger the weight at its end, and the annulment of this weight will be fundamental to the improvement in the efficiency and integrity of the turbine. So, the larger the blades the heavier the will be, resulting in greater inertia and, consequently, in less efficacy, besides increasing the risk of the blades breaking.

[0031 ] One of the conditions that limits the efficiency and functioning of vertical-axis turbines the most is the fact that their blades have different positions with respect to the direction of the wind forces, more and less favorable positions, as well as more and less unfavorable positions, because their rotation on the horizontal plane is on the same plane of the flow of wind. One of the implications of this problem is the frequent oscillation of the torque during the one-cycle period. As a result, if their aerodynamics is not efficient, this may render the use of the turbine totally unfeasible.

[0032] Another consequence of the union of the two preceding problems, the close relation existing between size and weight and the double position of the blades with respect to the wind, are the breaks of the blades or damage to the structure or to the equipment as a whole. These factors, being present at the same time, cause there to be forces in various directions, acting at the same time on the blades, the weight force in the vertical direction downward (force of gravity), and the wind forces in the two horizontal (favorable/unfavorable) directions. Besides causing vertical and horizontal oscillations on all the structure, which may lead cause serious damage, these problems may make the development and use of a vertical- axis wind turbine totally unviable.

[0033] Due to these factors limiting their efficiency and use, one has not managed to obtain vertical-axis turbines that generate energy in a significant commercial production, which limits their application, without still reaching efficiency suitable for use at places of low demand for energy.

Novelty

[0034] This wind turbine has five important innovations to solve the main problems and limitations faced by vertical-axis, especially those that operate with drag force, as Savonius-type turbines and their derivations do. By implementing these innovations, we expect to achieve a high and expected level of efficiency for wind turbines in general, chiefly for those used in urban areas, which are those that lack efficiency most. Therefore, for a better understanding thereof, we will describe hereinafter the five main innovations implemented in this patent, which account for achieving their efficiency.

[0035] 1 - solution or reduction of the structural problem of excess weight of the blades, that is, as their size increases the weight at the end of the blade also increases, which results in loss of the efficiency, besides representing a risk to the vertical-axis turbines: we solve this problem by placing diagonal bars or cables uniting the conical end or a point close to the conical end of the blades to a central axis point of the upper and/or lower part of the rotary nacelle, such as a latticework, thus transferring the weight of the blade end to the rotation center;

[0036] 2- the decrease in friction on the rolling parts of the shaft bearing, which results in a decrease in noise and increase in efficiency of the turbine, was solved by using a special shaft bearing with gas suspension, which works by absorbing whole or almost the whole turbine weight, by virtue of the use of a gas with lifting property, which may be helium, for example, placed within a compartment of the movable part of the shaft bearing, which will therefore lift the whole movable part of the turbine and, as a result, decrease or annul friction and noise on the roiling parts of the shaft bearing, facilitating the rotation movement;

[0037] 3- solution of the problem of low efficiency of the turbines of 10 small dimensions required in urban areas, which solution also improves significantly the efficiency of larger turbines, by applying the concepts of torque or lever system of classical physics, which multiplies the Wind force captured, for the most part, at the blade ends, on the central shaft of the turbine, using one blade with aerodynamic design of the conical shell type that is purposely elongated, to receive the largest part of the wind forces at a certain distance from the shaft, leveraging and potentiating its force on the vertical centra! axis;

[0038] 4- solution to the problem of double position of the blades with respect to the wind forces, which give rise to a drag force opposite the rotation when the wind reaches the blade in the direction unfavorable to rotation, this problem affecting especially vertical-axis turbines: we solve this problem by decreasing as much as possible these opposite forces by means of an aerodynamic design of blades of the elongate conical shell type that favor much more the forces favorable to the rotation direction of the turbine;

[0039] 5- solution to the problem of damage and breaks of the blades and of the frequent torque oscillation, which always affect vertical-axis turbines, especially the Savonius-type ones and their derivations, by reinforcing the turbine structure by means of horizontal curved bars. These horizontal curved bars, which we also call flywheels, surround the turbine uniting firmly all the blades in the position of the cone beak, which strengthens the structure, balances and distributes equally ail the horizontal forces that actuate on the blades, resulting in greater resistance of the structure and in the stabilization of the torque.

Advantages:

[0040] In the face of the present-day context, the growing threat of lack of non-renewable energy resources, and of the global warming caused chiefly by the increase in the emission of greenhouse gases like carbon dioxide (C02) resulting chiefly from the burning of non-renewable fossil fuels, the concept of sustainability of the subsistence means and consumption by mankind has emerged. Based on this sustainability concept, we have found out the urgent need to revert this catastrophic scene, which is aggravating year by year, before the warming becomes irreversible or causes serious damage to our environment. We have established a target for replacing the present-day energy matrix based chiefly on non-renewable fossil fuels by an energy matrix that uses cleaner and renewable sources, as is the case of wind energy, which, like other secondary sources, has its origin in the soil as a primary source of energy. [0041 ] Guided by this garget, we catch a glimpse of the advantage of wind energy over other sources of clean energy in all aspects, in their present stage of development. All the renewable sources have their importance, but the wind energy stands out for its simplicity, availability and ease of utilization and this advantage becomes evident when we make comparisons with other sources of energy.

[0042] The main objective of this turbine is to make feasible the use of wind turbines in urban areas, or even in rural areas, by self-generation of energy for, micro, small and medium consumers, providing these consumers with the generation of their own consumed energy, due to the lack of efficient and safe turbines with application in these areas for this type of consumer. They could also be used in wind parks, whether in rural or offshore areas, where the wind and geography conditions are more favorable, and suffice it to increase their sizes and make minor adjustments to make better use of stronger and constant winds.

[0043] For operation in urban areas a turbine should operate with efficiency in small dimensions, with weak and medium winds from any direction, should have inexpensive structure and be easy to install, should have a stable, safe, resistant, reliable structure and produce little noise, Turbines in urban areas have become an urgent need in the past few years for meeting the growing demand for clean and renewable energy in big cities.

[0044] Another reason for self-sufficiency in energy are the constant blackouts in the large urban areas, be it due to the lack of energy or to a failure in the various pieces of equipment that are part of the system, from generation, through transmission and distribution, to the final consumer, besides the decrease in the cost of the energy.

[0045] This type of turbine would also be very useful to meet the need for energy in small places that are away from energy production plants. Due to the long distance and to the relative small demand for energy of these small places, the construction of long and expensive transmission lines for carrying energy to these places becomes unfeasible. Therefore it is much more productive and cheap to produce the required energy at the place of consumption itself.

[0046] When they are installed at large energy production plants, farms or wind parks, for instance, the impact on the environment is the least possible, unlike hydroelectric power stations. Hydroelectric power stations flood large areas for the water reservoir and cause irreparable and irreversible damage to the environment, before and after the barrage, and may even change the course of rivers. On the other hand, wind plants alter little or cause little damage to the environment.

[0047] They occupy only the space necessary for installing the towers, and the surrounding environment does not undergo any alteration. Wind plants have the advantage of generating energy in urban areas for individual consumers or close to urban areas, without causing much alteration of damage to the environment. The cost of a KWh of wind plants may even be lower than that of hydroelectric power stations, when wind turbines that are more efficient than the present-day ones are used, or when the use of this source of energy in Brazil is spread with the installation of large wind parks.

[0048] When compared to solar energy produced by photovoltaic panels or even reflector panels, the advantages of wind solar energy are even greater. The wind energy is much cheaper, much more efficient and has a quite longer time period in daily hours of production, among other advantages. Winds blow day and night all the year round, in rain or fine weather, only their intensity may vary a little according to the time of the year or the geographic location, but we have, on average, many more hours of wind than sunshine per day. Unfortunately solar energy is limited to various natural factors.

[0049] Sunshine is limited to 12 hours a day, only during the day, and may still remain covered a number of days or a number of hours on end, according to the day or time of the year, and from these 12 hours only a small part (about 2 hours a day) will fall directly onto the panel at an ideal angle for the best use of this energy. Besides, solar panels have an area of exposure to Sunshine, and the solar energy falling onto this area may be used,

[0050] When the energy from solar radiation is measured on a plane perpendicular to the direction of propagation of the sun rays at the top of the earth's atmosphere, it is of about 1367 W/m2. About 78% of this energy reaches the surface of the Earth when it propagates perpendicularly to the Earth's surface and on a day with clear sky, that is, on a cloudless and sunny day and at midday. This corresponds to about 1066 W/m2 reaching the Earth's surface, but this happens on a clear, sunny day at midday and still at moreover at the equinoxes,

[0051 ] Well then, this is the maximum limit of production of energy for a one-square-meter solar panel for one or two hours on a day with ail the favorable weather conditions, and this production would only be achieved if the panels had maximum (100%) efficiency, and even so in a short period of the day, that is, at around midday, since after this period the energy failing onto the Earth's surface would drop rapidly due to the growing inclination of the sun rays. However, the best photovoltaic panels at present have efficiency of about 15%, that is to say, at best a 1 -m2 panel will produce about 150Wh for approximately two hours around midday. Outside this period the production would drop markedly with the increasing distance from midday. Therefore, in practice this is equivalent to letting a 150W lamp on for two hours at about midday and at the equinoxes, exactly when we do not need to turn on lights.

[0052] Therefore, more often than not, in order to provide a home with photovoltaic panels, perhaps it is necessary to have an area larger than a house roof, use many batteries, since it does not pay off to a concessionaire to sell a possible momentary excess, and expect sunshine, not to mention that the cost of it ail would be unviable and that the sun would not heat your house through the roof any longer, and that below the panel location there would always be shade; in other words, nothing could be grown there. Probably, the water heating solar plates are more effective and more suitable for use on roofs than photovoltaic panels. It should also be pointed out that the availability of solar energy varies according to the time or season of the year, that is, in summer the availability of solar energy is greater than in winter. On the other hand, the present-day wind turbines reach about 40% efficiency and can produce energy a number of hours a day, at any time of the day, on any day of the year, depending only on the wind velocity and a small area for installing it.

[0053] After passing through the whole atmosphere, the solar energy reaches the Earth's surface. Much of the energy irradiated by the sun that reaches the Earth is transferred directly to the atmosphere before reaching the surface, and a part of the portion that reaches the surface is reflected by the oceans and continents, and a part of the reflected energy is also transferred to the atmosphere. Besides, the water vapor produced by the sun on oceans, rivers and lakes is also transferred to the atmosphere. All this energy transferred to the atmosphere can produce winds. The solar wind energy that is captured by a wind turbine has also a special limit of exposure to the wind, determined by its dimensions. However, with regard to natural limitations, a wind turbine is only limited to adverse weather conditions such as very weak or very strong winds, which are rarer than the lack of sunshine or inclination of the sun rays with respect to the panel.

[0054] Wind energy utilizes more simple and efficient and much less limited principles to produce energy; suffice it for the wind to blow, which is more abundant during the day and night and even more from a few meter above the surface. Therefore, a wind turbine may have an amount of energy captured by square meter that is larger than that of solar panels and for a much longer period of time, besides having the possibility of being increased mechanically. Therefore, the advantages of the solar energy captured by wind turbines over the solar energy captured by solar panels or by reflectors through Sunshine are not few, which justify greater attention and greater destination of investments for this type of capture of energy.

Brief description of the invention

[0055] The objectives of the present invention are achieved by means of a wind turbine with leveraged aerodynamic blades, consisting of a vertical- axis wind turbine having conical aerodynamic elongate shell-type blades, provided with a lower tapering that ends in a cylindrical connector for fixation to the connectors of the rotary nacelle to the vertical rotation shaft by means of a piece that will connect ail the blades to the vertical rotation shaft within the rotary nacelle, where the generator may be housed, as well as all its accessories and necessary parts that will be fixed to a table provided with a central bore.

[0056] Such a table is fixed concentrically to the upper fixed part of a cylindrical or spherical wall shaft bearing that is connected, at its lower part, to the main support tower of the turbine, which further have a circular horizontal-support bar interconnecting the blades ant the height of the cone beak, forming a sort of flywheel, and upper and/or lower diagonal support bars or cables, which form a latticework, centralizing the weight of the blades.

[0057] Additionally, the shaft bearing has a chamber to be filled with a suspension gas in its movable part, to support the whole or almost whole weight of the turbine and keep it suspended, eliminating noises and friction, further having shaft bearings fixed to the grooves of an upper tray of the movable part of the shaft bearing and a table, which is provided with an central bore and fixed concentrically in the upper part of the fixed part of the shaft bearing that has a cylindrical and bored-through body.

[0058] The shaft bearing further has bearing rings arranged in vertical layers and fixed to the outer wail of the cylindrical central bore of the movable part of the shaft bearing that engages concentrically with the fixed part of the shaft bearing, and also bearings fixed in the grooves of a lower tray of the fixed part of the shaft bearing.

[0059] The lower part of the fixed part of the shaft bearing will be connected to the main support tower that will support the whole turbine, and the upper part of the movable part of the shaft bearing will be connected to the lower part of the rotary nacelle.

Brief description of the drawing [0060] For a perfect viewing and understanding of the wind turbine with leveraged aerodynamic blades in question, it will be illustrated by the following drawings, wherein:

[0061 ] Fig. 1 - shows a perspective view of the blade of in question;

[0062] Fig. 2 - shows a perspective view of the blade in question, with symmetrical section on a horizontal plane;

[0063] Fig. 3 - shows a perspective view of the straight-wail shaft bearing;

[0064] Fig. 4 - shows a front cross-sectional view of the cylindrical-wail shaft bearing;

[0065] Fig, 5 - shows a front cross-sectional view of the cylindrical-wail shaft bearing;

[0066] Fig. 6 - shows a perspective and cross-sectional view of the straight-wall shaft bearing;

[0067] Fig. 7 - shows a perspective view of the main parts of the unmounted shaft bearing, showing from top town: the table, the movable part that is the outer part of the shaft bearing and the fixed part that is the inner part of the shaft bearing;

[0068] Fig. 8 - an approximate and cross-sectional view of the movable parts of the spherical-wall shaft bearing;

[0069] Fig. 9 - a perspective view of the spherical-wail shaft bearing mounted;

[0070] Fig. 10 - a cross-sectional view of the spherical-wall shaft bearing;

[0071 ] Fig. 1 1 - a perspective view of the object of the present invention in a simple configuration;

[0072] Fig, 12 - a perspective view of the object of the present invention in a configuration with upper diagonal support bars;

[0073] Fig. 13 - a perspective view of the object of the present invention in a configuration with lower diagonal support bars;

[0074] Fig. 14 - a perspective view of the object of the present invention in a complete configuration; [0075] Fig. 15 - an approximate view of the object of the present invention in a simple configuration;

[0076] Fig. 16 - an approximate view of the object of the present invention showing the shaft bearing and the rotary nacelle of four connections with a section showing the connections and the fixation of the energy generating pieces of equipment; and

[0077] Fig. 17 - an approximate view of the object of the present invention showing the connections of the blades with the vertical shaft and the electric energy generating pieces of equipment and its installations within the rotary nacelle.

Detailed description of the figures

[0078] According to the illustration and its details, the present invention is constituted by a vertical-axis wind turbine (1 ), characterized by having conical aerodynamic blades of elongate-shell type (2), provided with lower tapering (3) ending in a cylindrical connector (4) for fixation to the connectors (6) of the Rotary nacelle (5) and to the vertical rotation shaft by means of a piece that will connect all the blades to the vertical rotation shaft within the rotary nacelle (5), where the generator may be housed, as well as and all its accessory parts and parts necessary that will be fixed to a table (8) provided with a central bore (9) which is fixed concentrically to the upper fixed part (10) of a cylindrical-wail (7A) or spherical-wall (7B) shaft bearing (7) that is connected, at its lower part, to the main support tower (12) of the turbine (1 ), the latter further having a circular horizontal support bar (13) interconnecting the blades at the height of the cone beak, forming a sort of flywheel (2) and upper (15) and/or lower (16) diagonal support cables, in the form of a latticework, centralizing the weight of the blades.

[0079] The shaft bearing (7) has a chamber to be filled with a suspension gas (14) in its movable part (17) to support the whole or almost whole weight of the turbine (1 ) and keep it suspended, eliminating noises and friction, further having ball bearings with individual encapsulation (1 1 ) or united to each other, fixed in the grooves of an upper tray (19) of the movable part of the shaft bearing (17), which facilitates the rotation motion when the shaft bearing is totai!y suspended and resting on the table (8), which is provided with a central bore (9) and fixed concentrically to the upper part of the fixed part of the shaft bearing (10) which has a cylindrical and bored- through cylindrical body (20), further having bearing rings arranged in vertical layers (21 ) fixed to the inner wall of the cylindrical central bore (22) of the movable part of the shaft bearing (17), to facilitate the vertical and rotational movement, at the same time, of this movable part of the shaft bearing (17), which engages concentrically with the fixed part of the shaft bearing (10) turning and sliding vertically on it.

[0080] There are also shaft bearings (18) fixed in the grooves of a lower tray (23) of the fixed part of the shaft bearing (10), to facilitate the rotation when the movable part of the shaft bearing (17) is not suspended, but rather resting on the lower tray (23). The lower part (24) of the fixed part of the shaft bearing (10) is further connected to the main support tower (12) that supports the whole turbine (1 ) and the upper part of the movable part of the shaft bearing will be connected to the lower part of the rotary nacelle. The idea is to keep the movable part of the shaft bearing, which is the part connected to the turbine, suspended between the lower tray of the fixed part and the lower part of the table, fixed to the upper part of the fixed part of the shaft bearing, for the turbine to float and turn without friction and noise.

Claims

1 , A wind turbine with levered aerodynamic blades, constituted by a vertical- axis wind turbine (1 ), characterized by having conical aerodynamic blades of elongate "shell" type (2), provided with lower tapering (3), ending in a cylindrical connector (4) for fixation of the connectors (6) of the rotary nacelle (5) and to the vertical rotation shaft by means of a piece that will connect all the blades to the vertical rotation shaft within the rotary nacelle (5), where the generator and all its accessory parts can be housed, as well as necessary parts that will be fixed to a table (8) provided with a central bore (9), which is fixed concentrically to the upper fixed part (10) of a cylindrical-wall shaft bearing (7) or a spherical-wail shaft bearing (7B), which is connected, at its lower part, to the main support tower (12) of the turbine (1 ), the latter further having a horizontal support circular bar (13) interconnecting the blades at the height of the cone beak, forming a sort of flywheel (2) and upper (15) and/or lower (18) diagonal support bars or cables, which form a latticework, centralizing the weight of the blades.

2. The wind turbine according to claim 1 , characterized that that the shaft bearing (7) has a chamber to be filled with a suspension gas (14) at its movable part (17) to support the whole or almost whole weight of the turbine (1 ) and keep it suspended, eliminating noises and friction, further having ball bearings (1 1 ) fixed in the grooves of an upper tray (19) of the movable part of the shaft bearing (17) and a table (8), which is provided with a central bore (9) and fixed concentrically to the upper part of the fixed part of the shaft bearing (10), which has a cylindrical and bore-through body (20), further having bearing rings (21 ) arranged in vertical layers, fixed to the outer wall of the cylindrical central bore (22) of the movable part of the shaft bearing (17), which engages concentrically with the fixed part of the shaft bearing (10) and also shaft bearings (18) fixed in the grooves of a lower tray (23) of the fixed part of the shaft bearing (10), the lower part (24) of the fixed part of the shaft bearing (10) being connected to the main support tower (12) which will support the whole turbine (1 ) and the upper part of the movable part of the shaft bearing will be connected to the lower of the rotary nacelle.