WO2012172443A1 - Wind plant with horizontal or vertical main axis - Google Patents

Wind plant with horizontal or vertical main axis Download PDF

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Publication number
WO2012172443A1
WO2012172443A1 PCT/IB2012/052430 IB2012052430W WO2012172443A1 WO 2012172443 A1 WO2012172443 A1 WO 2012172443A1 IB 2012052430 W IB2012052430 W IB 2012052430W WO 2012172443 A1 WO2012172443 A1 WO 2012172443A1
Authority
WO
WIPO (PCT)
Prior art keywords
wind
axis
blades
around
vertical
Prior art date
Application number
PCT/IB2012/052430
Other languages
French (fr)
Inventor
Marco BOSELLO
Paolo CAZZARO
Original Assignee
Bosello Marco
Cazzaro Paolo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosello Marco, Cazzaro Paolo filed Critical Bosello Marco
Publication of WO2012172443A1 publication Critical patent/WO2012172443A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/066—Rotors characterised by their construction elements the wind engaging parts being movable relative to the rotor
    • F03D3/067—Cyclic movements
    • F03D3/068—Cyclic movements mechanically controlled by the rotor structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/002—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being horizontal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/02—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having a plurality of rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/911—Mounting on supporting structures or systems on a stationary structure already existing for a prior purpose
    • F05B2240/9112—Mounting on supporting structures or systems on a stationary structure already existing for a prior purpose which is a building
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/30—Wind power
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • Each of said blades (P) is also adapted top rotate around its own axis (PI).
  • Each of said blades (P) during the motion of revolution around said main axis (X2) due to the action of the wind, rotates also around its own axis of rotation (PI), so as that it changes in a continuous and sequential way its own orientation with respect to the wind, or rather the thrust surface exposed to the wind.
  • Said pin (Ml) is also geared with a second bevel gear (M3) in a bevel gear (M4) mounted on a fixed pin (M5), for example coaxial to said main axis (X2).
  • M3 second bevel gear
  • M4 mounted on a fixed pin (M5), for example coaxial to said main axis (X2).
  • the revolution of the blades (P) around their main axis (XI) thanks to the wind effect causes the integral rotation of said structure (Bl) and of said pins (Ml) bound to it.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention is a wind plant (1, 2) with vertical or horizontal main axis (X1, X2), in which the revolution of the blades (P) of each module (B) around said main axis (X1, X2) caused by the wind makes each blade (P) rotate around its own axis (PI), each blade (P) being mechanically connected through gears (P4, M1, M2, M3, M4) to a counteracting pin (M5) which is parallel and/or coaxial to said main axis (X1, X2), suited to remain fixed with respect to the wind direction (W).

Description

WIND PLANT WITH HORIZONTAL OR VERTICAL MAIN
AXIS
DESCRIPTION
The present invention concerns wind plants and in particular concerns a new wind plant with vertical or horizontal main axis, with device of auto- orientation.
There are well-known wind plants with vertical or horizontal main axis.
Known wind plants with horizontal main axis comprises a tower or vertical upright, to the top of which is mounted a wind turbine with horizontal axis of rotation, in turn comprising wind blades that, under the action of the wind, rotates and actuates a generator.
Wind plants with vertical axis are generally of small size and particularly suitable for domestic use and also for the centralized production of electricity. There are well-known wind plants with vertical axis, comprising a main shaft, with vertical axis of rotation, connected to a generator and on which is mounted a rotating wind module around said vertical main axis and in turn comprising blades adapted to be invested by the wind, provoking the rotation of the module and of said shaft.
Each of said blades is also rotating around its own axis of orientation arranged orthogonally to the axis of the main shaft.
Each of said blades, in particular, rotates around its own horizontal axis of orientation during its motion of revolution around the vertical shaft, in order to vary the surface opposite to the thrust of the wind in a continuous way.
Plants of this kind currently known are also adjustable in function to the direction of the wind by means of powered electronic devices .
Such powered electronic devices comprise sensors and detectors of environmental parameters such as wind intensity and direction, as well as means adapted to rotate the module as a function of these parameters. Devices of this kind are extremely complex, they must always be correctly calibrated and require frequent and regular inspections.
These devices must be adequately packed and protected from the inclemency of the weather.
The costs of installation and maintenance are therefore high and also any maintenance intervention requires stopping the plant.
Devices of this kind currently known are therefore very expensive, in particular in relation to domestic use or to small consumers.
To overcome all the mentioned disadvantages, a new type of wind plant has been studied and realized, with horizontal or vertical axis, with device of auto- orientation mechanically operated.
The main task of the present invention is the automation of the operation of the plant and in particular the orientation of the blades in function to the direction of the wind without the use of motorized or electronic means.
One more scope of the present invention is the reduction of the costs of realization, installation and maintenance, as devices of auto -orientation with electronic or motorized operation are not prospected.
Another scope of the present invention is the fact of being installable both with vertical and with horizontal axis, with just few changes.
The present invention is successfully applied in the field of domestic installation or for small users.
These and other direct and complementary scopes are reached by the new wind plant with main horizontal or vertical axis comprising in its main parts:
a main shaft that can be rotated around its own axis, or main axis, and suited to be directly or indirectly connected to a power generator;
at least one wind module connected to said main shaft and in turn comprising a structure that rotates around to said main shaft and two or more wind blades mounted on said structure and suited to convey an axial rotatory motion to said structure and to said main shaft;
each of said blades being mounted with their orthogonal axis to said main shaft that rotates around its own axis;
means for the controlled rotation of each of said wind blades around their own axis, to vary in a continuous way the thrust surface opposite to the wind during the devolution of the blades around said main axis; at least one device for the orientation of said module according to the wind direction, in turn comprising at least one rudder or vane suited to rotate around its own axis of rotation by the action of the wind;
It can be expected that said rudder is mechanically connected to said blades so that the rotation of the rudder by the wind causes a corresponding rotation of said blades around their respective axes.
The new plant can be of vertical main axis type, where said wind module can rotate around said main vertical axis. Said blades are bound to said wind module with axes lying on a substantially horizontal plane, parallel to the direction of the wind.
Due to the effect of the wind on said blades, said module rotates provoking the corresponding axial rotation of said main shaft that drives said generator.
In this realization, said rudder has a vertical axis of rotation mechanically connected to said wind module, so that the rotation of said rudder around said vertical axis, due to the thrust of the wind, causes the rotation of said blades around the respective horizontal axes of rotation, thereby orienting them correctly according to the wind direction.
Alternatively, the new plant can be with horizontal main axis, where said wind module is suited to be rotated around said main horizontal axis itself. Said blades are bound to said wind module with axes lying on a substantially vertical plane and adapted to be rotated in parallel direction to the direction of the wind. In this realization, said rudder has a vertical rotation axis mechanically connected to said wind module so that the rotation of said rudder around said vertical axis, caused by the wind, makes said wind module rotate integrally around said vertical axis of the rudder, in a way that said supporting plane of the axes of the blades becomes parallel to the direction of the wind.
The characteristics of the new plant will be better clarified by the following description with reference to the drawings, enclosed as non-restrictive examples.
Figure 1 schematizes a view from above of the new plant (1) with main vertical axis (XI) while in figure 2 there is the representation of a perspective view. In figure 3 there is the schematization of a detailed lateral view of the new plant (1) with vertical main axis (XI) where you can see a portion of the main shaft (A), the device of auto-orientation (T) with the rudder (Tl) and related transmission gears (P4, Ml, M2, M3, M4, M5) and a blade (P) in position of maximum thrust (Pa), namely with a face (P2) orthogonal to the direction of the wind are visible.
In Figure 4 it is represented a perspective view of the new plant (1) in the vertical main axis realization (XI).
In Figures 5a and 5b are represented two views, a perspective and a three- dimensional view, of the new plant (2) with main horizontal axis (X2), with two wind modules (B) in a mirror arrangement with respect to the upright (C). In Figure 5c is schematized a side-detailed view in detail of the new plant (2) with horizontal main axis (X2) where are visible a portion of the main shaft (A), a blade (P) in a position of maximum thrust (Pa), namely orientated upwards and with a face (P2) orthogonal to the direction of the wind, and the transmission gears (P4, Ml, M2, M3, M4, M5) for the rotation of the blade (P) around its own axis.
In Figure 6 is represented an example of plant (1, 2), adapted to be installed with vertical (XI) or horizontal axis (X2) comprising more stacked and coaxial wind modules (B) .
It is a wind plant (1, 2) with vertical main axis (XI) or horizontal (X2)
In Figures from 1 to 4 it is represented a solution realizing the new plant with vertical main axis (XI).
The new plant (1) comprises a main shaft (A) substantially vertical and adapted to rotate around its own axis that coincides with said vertical main axis (XI). Said main shaft (A) is adapted to be directly or indirectly connected to a power generator, for example through known means and devices.
To said main shaft (A) is connected at least one wind module (B), in turn comprising a frame or structure (Bl) adapted hereafter to rotate around said vertical main axis (XI), for example integral with said main shaft (A).
Two or more wind blades (P) are mounted on said structure (Bl) as hereinafter described and claimed, adapted to impart to said structure itself (Bl), and consequently to said main shaft (A), an axial rotary motion due to the thrust of the wind, for example in the direction indicated with an arrow in Figure 1. Said blades (P) can be for example two or more, or five, as in the illustrated examples.
Said blades (P) are mounted on said structure (Bl) with the corresponding axes
(PI) all lying on an orthogonal plane to said main shaft (XI), namely horizontal and parallel to the direction (W) of the wind.
Each of said blades (P) is also adapted to rotate around its own axis (PI).
Each of said blades (P), during the revolutionary motion around said main axis
(XI) due to the action of the wind, rotates also around its own axis of rotation
(PI), to continuously and sequentially vary their orientation according to the wind direction, namely the thrust surface exposed to the wind.
The direction taken by the blades (P) is homologous for all the blades (P) in function of their position during the rotation around said main axis (XI). Particularly, the direction of each blade (P) varies from an orientation of maximum thrust (Pa), when the blade (P) is directed with a face (P2) orthogonal to the direction of the wind (W), to an orientation of minimum thrust (Pz) (indicated with a dashed line in Figure 1), when the blade (P) has rotated 180° with respect to said main axis (XI) and 90° with respect to its own axis (PI), providing a surface to the wind pressure substantially equal to the surface of the lateral projection (P3) of the blade (P).
The new plant thus comprises also means (M) for the rotation of each of said wind blades (P) around its axis (PI) during their revolution around the main axis (XI).
Particularly, as visible in detail in Figure 3, said means (M) comprise gears connected to said structures (Bl) and to the axis (PI) of each of said blades (P) adapted to transmit to the blades (P) themselves a rotation around its axis (PI) during the motion of revolution of the blades (P) around the main axis (XI) for effect of the wind.
In the particular solution, said means (M) comprise, for each blade (P) a pin (Ml)constrained to said structure (Bl) and suited to be rotated axially, positioned parallel to said main axis (XI), said pin (Ml) being engaged through a bevel gear (M2) with a corresponding bevel gear (P4) integral with and coaxial to said axis (PI) of the corresponding blade (P).
Said pin (Ml) is also engaged with a second bevel gear (M3) in a bevel gear (M4) mounted on a counteracting pin (M5), not integral with the structure (Bl) and for example, coaxial to said main axis (XI).
The revolution of the blades (P) around the main axis (XI) caused by the wind makes rotate integrally said structure (Bl) and said pins (Ml) constrained to it with respect to said counteracting pin (M5).
The rotation of said pins (Ml) is transmitted through said bevel gears (M2, P4) to the axis (PI) of each of said blades (P), that thus rotate also around their own axis (PI).
When the direction of the wind (W) varies, the new wind plant (1) is structured so as to vary consequently the orientation of the blades (P), that must be arranged with the face (P2) orthogonal to the direction of the wind (W). For this purpose, the new wind plant comprises at least one device (T) to orientate said blades (P) according to the wind direction (W), in turn comprising at least one rudder or vane (Tl) adapted to rotate around its own rotation axis (Tx) by the wind power, that causes its rotation in the position of lowest resistance.
Said rudder (Tl) in particular is mechanically connected to said counteracting pin (M5) in a way that with a constant wind direction (W), said rudder (Tl) is stationary, so is therefore stationary also said counteracting pin (M5), on which said pin (Ml) connected to the blades (P) is geared.
In the example illustrated in Figure 3, said rotation axis (Tx) of the rudder (Tl) is coincident to said main vertical axis (XI) and with the axis of said counteracting pin (M5).
When the direction of the wind (W) varies, said rudder (Tl) rotates around its own axis (Tx) placing itself parallel to the direction of the wind (W) and causing the corresponding rotation of said counteracting pin (M5), which is transmitted through said bevel gears (M4, M3) to said pins (Ml) connected to the structure (Bl) of the module (B).
Thus, each rotation of the rudder (Tl), that is orientated in function of the wind direction (W), causes a corresponding axial rotation of said pins (M5, Ml) around their own axis and therefore, by means of said bevel gears (M2, P4), are correspondingly rotated also all the blades (P) around their axis (PI).
In the favourite solution, schematized in Figures 1, 2 and 3, the lying plane of said rudder (Tl) is always orthogonal to the lying plane of the blades (Pa) that are gradually located in a position of maximum thrust (Pa), with a face (P2) orthogonal to the wind direction (W).
In Figures 5 a, 5b and 5 c an embodiment of the new plant with horizontal main axis (X2) is represented.
The new plant (2) comprises a vertical upright (C) on which a main shaft is installed (A) substantially horizontal and adapted to be rotated around its own axis coinciding with said horizontal main axis (X2).
Said main shaft (A) is adapted to be directly or indirectly connected to a power generator for example through known means and devices.
To said main shaft (A) is connected at least one wind module (B), for instance a couple of wind modules (B) arranged specularly with respect to said upright (C) and bound to said upright (C) for example by a shaped structure (CI) rotating around a vertical axis, for example the axis (Cx) of the upright (C) itself, depending on the direction of the wind (W).
Each of said wind modules (B) comprises a frame or structure (Bl) adapted to rotate around said main horizontal axis (X2), for example integrally with said main shaft (A).
On said structure (Bl) are mounted two or more wind blades (P), adapted to give to the relative structure (Bl) and consequently to said main shaft (A), an axial rotatory motion due to the thrust of the wind.
Said blades (P) can for instance be two or more or, as in the illustrated examples, five.
Said blades (P) are mounted on said structure (Bl) with the respective axis (PI) all lying on a orthogonal plane to said main axis (X2), namely vertical, adapted to be oriented parallel to the wind direction (W).
Each of said blades (P) is also adapted top rotate around its own axis (PI). Each of said blades (P), during the motion of revolution around said main axis (X2) due to the action of the wind, rotates also around its own axis of rotation (PI), so as that it changes in a continuous and sequential way its own orientation with respect to the wind, or rather the thrust surface exposed to the wind.
The change in orientation of the blades (P) is homologous to all the blades (P) as a function according to their position during the rotation around said main axis (X2).
In particular, the orientation of each blade (P) varies from an orientation of maximum thrust (Pa), when the blade (P) is disposed vertically upwards and directed with a face (P2) orthogonal to the direction of the wind (W), to an orientation of minimum thrust, when the blade (P) has rotated 180° with respect to said main axis (X2) and of 90° with respect to its own axis (PI), providing to the wind thrust a surface substantially equal to the surface of the lateral projection of the blade (P)
The new system thus comprises also means (M) for the rotation of each of said wind blades (P) around their axis (PI) during their revolution around their main axis (X2), said means (M) being similar to the means (M) described above for the system (1) to the main vertical axis (XI).
Said means (M) comprise, for each blade (P), a pin (Ml) bound to said structure (Bl) and axially rotatable, disposed parallel to said main axis (X2), said pin (Ml) being geared with the bevel gear (M2) to a corresponding bevel gear (P4) integral and coaxial to said axis (PI) of the relative blade (P).
Said pin (Ml) is also geared with a second bevel gear (M3) in a bevel gear (M4) mounted on a fixed pin (M5), for example coaxial to said main axis (X2). The revolution of the blades (P) around their main axis (XI) thanks to the wind effect causes the integral rotation of said structure (Bl) and of said pins (Ml) bound to it.
The rotation of said pins (Ml) is consequently transmitted by means of said bevel gears (M2, P4) to the axis (PI) of each of said blades (P), that therefore rotate around their own axis (PI). When the wind direction (W) varies, the new wind plant (2) is structured in a way to rotate around a vertical axis, to orientate the wind modules (B) so that the lying plane of the axis (PI) of the blades (P) is oriented parallel to the wind direction (W).
When the direction of the wind (W) varies, the new wind plant (2) is structured to rotate around a vertical axis, in order to orient the wind modules (B) so that the lying plane of the axis (PI) of the blades (P) is orientated parallel to the wind direction (W).
To this scope, the new plant (2) comprises at least one device (T) to orientate said blades (P) according to the wind direction (W) and in turn comprising at least one rudder or vane (Tl) suited to be rotated around its own vertical rotation axis (Tx) by the wind, which causes its rotation to the position of lowest resistance.
Said axis of rotation (Tx) is for example coinciding with said axis of rotation (Cx) of the shaped structure (CI). Said rudder (Tl) is rigidly connected to said shaped structure (CI) and lying on a plane substantially parallel to the lying plane of the axis (PI) of said blades (P).
By the wind effect, said rudder (Tl) rotates around its own axis (Tx) to result parallel to the wind direction (W) and so causes the corresponding rotation of said shaped structure (CI) and consequently of said modules (B), in a way that said blades (P) result again arranged with axes (PI) lying on a plane parallel to the wind direction (W).
As shown schematically in Figure 6, the new wind plant (1, 2), both with vertical (XI) and horizontal (X2) axis, can comprise two or more of said modules (B) stacked, namely coaxial on a unique main axis (XI, X2) and connected to the same main plant (A), all preferably rotating in the same direction and preferably offset by an angle equal to 360° divided by the number of modules (B). The new wind plant (1, 2), with vertical (XI) or horizontal (X2) axis, is particularly suitable for domestic installation, for example as schematized in Figure 7, in a niche (El) formed on a roof of a building (E).
Therefore, with reference to the above description and to the enclosed drawings, the following claims are put forth.

Claims

1, Wind plant (1, 2) comprising:
• a main shaft (A) that can be rotated around its vertical (XI) or horizontal (X2) main axis and is suited to be connected to a power generator;
· at least one wind module (B) connected to said main shaft (A) and in turn comprising a structure (Bl) connected to said main shaft (A) and suited to be rotated around said main axis (XI, X2), and two or more wind blades (P) mounted on said structure (Bl) and suited to convey an axial rotary motion to said structure (Bl) and to said main shaft (A), said blades (P) being mounted with axes (PI) lying on a plane which is parallel to the wind direction (W) and orthogonal to said main shaft (A),
• said blades (P) being suited to rotate also around their axis (PI) to continuously and sequentially vary their orientation with respect to the wind direction (W),
characterized in that the revolution of said blades (P) of each module (B) around said main axis (XI, X2) caused by the wind makes each blade (P) rotate around its own axis (PI), each blade (P) being mechanically connected through gears (P4, Ml, M2, M3, M4) to a counteracting pin (M5) which is parallel and/or coaxial to said main axis (XI, X2), free with respect to said structure (Bl) and suited to remain fixed with respect to the wind direction (W).
2. Wind plant (1, 2) with horizontal (X2) or vertical (XI) main axis according to claim 1 , characterized in that for each blade (P) of a module (B) it comprises:
• a pin (Ml) constrained to said structure (Bl) and suited to be rotated axially, positioned parallel to said main axis (XI, X2), said pin (Ml) being engaged through a bevel gear (M2) with a corresponding bevel gear (P4) integral with and coaxial to said axis (PI) of the corresponding blade (P);
• a second gear (M3) integral with said pin (Ml) and engaging with a gear (M4) mounted on said counteracting pin (M5),
and wherein the revolution of the blades (P) around the main axis (XI, XT) caused by the wind makes said structure (Bl) and said pins (Ml) constrained to it rotate integrally with each other, and wherein the rotation of said pins (Ml) with respect to said counteracting pin (M5) is transmitted through said bevel gears (M2, P4) to the axis (PI) of each one of said blades (P) that thus rotate also around their own axis (PI).
3, Wind plant (1) with vertical main axis (XI) according to claim 1 or 2, characterized in that it comprises at least one device (T) to orientate said blades (P) according to the wind direction (W), in turn comprising at least one rudder or vane (Tl) connected to said modules (B) and suited to be rotated around its own rotation axis (Tx) by the wind, suited to be positioned parallel to the wind direction (W).
4, Wind plant (1) with vertical main axis (XI) according to claim 3, characterized in that said blades (P) of each module (B) are positioned with axes (PI) lying on a substantially horizontal plane, and wherein said rudder (Tl) has a vertical rotation axis (Tx) connected to said counteracting pin (M5) so that the rotation of said rudder (Tl) caused by the wind makes said counteracting pin (M5) rotate and, through said gears (P4, Ml, M2, M3, M4), makes also said blades (P) rotate around their own axis (PI).
5, Wind plant (2) with horizontal main axis (X2) according to claim 3, characterized in that said blades (P) of each module (B) are arranged with axes (PI) lying on a substantially vertical plane, and wherein said rudder (Tl) has a vertical rotation axis (Tx) mechanically connected to said wind module (B) so that the rotation of said rudder (Tl) caused by the wind makes said wind module (B) rotate integrally around a vertical axis (Cx), orientating said supporting plane of the axes (PI) of the blades (P) parallel to the wind direction (W). 6, Wind plant (2) with horizontal main axis (X2) according to claim 5, characterized in that it comprises:
• at least one vertical upright (C) or supporting structure;
• a shaped structure (CI) mounted on said upright (C), connected to said rudder (Tl) and suited to be rotated around said vertical axis (Cx, Tx);
• at least two of said wind modules (B), mounted on said shaped structure (CI), which are coaxial and specularly positioned with respect to said upright (C),
and wherein the wind makes said rudder (Tl) rotate around its own axis (Tx) until it is parallel to the wind direction (W), and said rudder (Tl) thus causes the corresponding rotation of said shaped structure (CI), and subsequently of said modules (B), so that said blades (P) are again positioned with their axes (PI) lying on a plane parallel to the wind direction (W).
7, Wind plant (1, 2) according to the preceding claims, characterized in that it comprises two or more of said modules (B) placed on top of each other, that is, coaxial with a single main axis (XI, X2) and connected to the same main shaft (A), all of them rotating in the same direction.
8, Wind plant (1, 2) according to claim 7, characterized in that said modules (B) are offset by a 360° angle divided by the number of modules (B).
PCT/IB2012/052430 2011-06-15 2012-05-15 Wind plant with horizontal or vertical main axis WO2012172443A1 (en)

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ITPD2011A000199 2011-06-15

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WO2013057512A3 (en) * 2011-10-19 2013-06-20 Christopher Coxon A turbine with rotation axis perpendicular to flow direction
CN104295442A (en) * 2014-10-14 2015-01-21 河海大学 Dual-wind-wheel horizontal-axis wind turbine
WO2015063354A1 (en) * 2013-10-30 2015-05-07 Ricardo Morcillo Molina Improved wind turbine for production of electrical power with multiple-blade vanes and horizontal shaft supported at the ends
CN105275745A (en) * 2014-07-07 2016-01-27 深圳市福田区青少年科技教育协会 Wind-driven generator capable of automatically adapting to wind direction
WO2017179063A1 (en) * 2016-04-15 2017-10-19 Ethirajulu Damodaran Variable tilting blade twin turbine wind mill
US20230033826A1 (en) * 2021-07-31 2023-02-02 Damodaran Ethiraj Variable Tilting Blade Twin Turbine Windmill

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CN108167124B (en) * 2018-02-23 2024-01-09 济宁圣峰环宇新能源技术有限公司 Single-shaft double-type wind power generation equipment

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US20100181777A1 (en) * 2009-01-16 2010-07-22 Charles Grigg Wind turbine generator and motor

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US20090257874A1 (en) * 2008-04-11 2009-10-15 Karl Marvin Rice Vertical axis windmill with weather vane positioning
US20100181777A1 (en) * 2009-01-16 2010-07-22 Charles Grigg Wind turbine generator and motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013057512A3 (en) * 2011-10-19 2013-06-20 Christopher Coxon A turbine with rotation axis perpendicular to flow direction
WO2015063354A1 (en) * 2013-10-30 2015-05-07 Ricardo Morcillo Molina Improved wind turbine for production of electrical power with multiple-blade vanes and horizontal shaft supported at the ends
CN105275745A (en) * 2014-07-07 2016-01-27 深圳市福田区青少年科技教育协会 Wind-driven generator capable of automatically adapting to wind direction
CN104295442A (en) * 2014-10-14 2015-01-21 河海大学 Dual-wind-wheel horizontal-axis wind turbine
WO2017179063A1 (en) * 2016-04-15 2017-10-19 Ethirajulu Damodaran Variable tilting blade twin turbine wind mill
US20230033826A1 (en) * 2021-07-31 2023-02-02 Damodaran Ethiraj Variable Tilting Blade Twin Turbine Windmill

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