DE3702234A1 - Wind or water-powered engine - Google Patents

Wind or water-powered engine

Info

Publication number
DE3702234A1
DE3702234A1 DE19873702234 DE3702234A DE3702234A1 DE 3702234 A1 DE3702234 A1 DE 3702234A1 DE 19873702234 DE19873702234 DE 19873702234 DE 3702234 A DE3702234 A DE 3702234A DE 3702234 A1 DE3702234 A1 DE 3702234A1
Authority
DE
Germany
Prior art keywords
rotation
axis
rotor blades
blades
rotor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE19873702234
Other languages
German (de)
Inventor
Harro Reiff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19873702234 priority Critical patent/DE3702234A1/en
Publication of DE3702234A1 publication Critical patent/DE3702234A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F05B2210/00—Working fluid
    • F05B2210/16—Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
    • 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
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/218—Rotors for wind turbines with vertical axis with horizontally hinged vanes
    • 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
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/221—Rotors for wind turbines with horizontal axis
    • 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
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
    • F05B2240/312—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape capable of being reefed
    • F05B2240/3121—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape capable of being reefed around an axis orthogonal to rotor rotational axis
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/72—Adjusting of angle of incidence or attack of rotating blades by turning around an axis parallel to the rotor centre line
    • 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
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • 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
    • Y02E10/20—Hydro energy
    • 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

Landscapes

  • 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

Published without abstract.

Description

Die Erfindung betrifft eine Wind- bzw. Wasserkraftmaschine mit aus zwei beidseitig an einer vertikalen Welle einander zugeordneten Rotor­ blättern, wie Flügel oder Schaufeln, die durch die Fluidströmung ange­ trieben werden.The invention relates to a wind or hydropower machine two rotors assigned to each other on a vertical shaft scroll, such as wings or blades, which are indicated by the fluid flow be driven.

Bekannt sind Windradkonstruktionen dieser Art, sogenannte Pananemonen. Neben dem als Anemometer verwendeten Schalenkreuz ist der Savonius-Ro­ tor zu erwähnen, der zwei gegenüber der vertikalen Drehachse versetzte starr in einem Rotor montierte Halbzylinderschalen aufweist.Wind turbine constructions of this type, so-called pananemones, are known. In addition to the cup cross used as an anemometer is the Savonius-Ro To mention gate that offset two with respect to the vertical axis of rotation has semi-cylindrical shells rigidly mounted in a rotor.

Mit allen diesen Anordnungen gelingt es nicht, die Windkraft optimal auszunutzen, weil ein großer Teil des von den im Wind mitlaufenden Schaufeln aufgebrachten Drehmomentes von den dem Wind entgegenlaufen­ den Schaufeln aufgezehrt wird.With all of these arrangements, wind power does not succeed optimally to exploit because a large part of that of those moving in the wind Buckets of torque applied run against the wind the shovels are consumed.

Um diesen Nachteil zu vermeiden, hat man Verstellmechanismen verwen­ det. Dazu ist ein ganz erheblich großer Bauaufwand mit einer sehr großen Anzahl verschiedener Einzelteile nötig, was besonders bei den gewünschten großen Rotationsdurchmessern verschleißanfällig ist und einen hohen Kostenaufwand bedingt.Adjustment mechanisms have been used to avoid this disadvantage det. This is a very considerable amount of construction work with a very large number of different individual parts necessary, which is particularly the case with the desired large rotation diameters is prone to wear and a high cost.

Die Aufgabe dieser Erfindung besteht demzufolge darin, eine Wind- bzw. Wasserkraftmaschine der eingangs genannten Art zu schaffen, bei wel­ cher ohne großen, verschleißbehafteten Aufwand eine günstige Ein­ stellung der dem Wind entgegenlaufenden Schaufeln auch bei großdimen­ sionierten Turbinen erreicht wird. The object of this invention is therefore to provide a wind or To create hydropower of the type mentioned, at wel without a large amount of wear and tear a cheap one position of the blades running against the wind, even for large dimes based turbines is achieved.  

Diese Aufgabe wird durch eine Bauart gemäß den kennzeichnenden Merkma­ len des Patentanspruches 1 gelöst.This task is accomplished by a design according to the characteristic features len of claim 1 solved.

In völlig überraschender Weise stellen sich beim Erfindungsgegenstand die dem Fluid entgegenlaufenden Rotorblätter selbsttätig in eine wider­ standsarme (Null-) Stellung und gelangen ebenso wieder in Betriebsstel­ lung. Die Stellkräfte werden dabei durch die Fluidströmung beider Rotorblätter aufgebracht.The subject of the invention presents itself in a completely surprising manner the rotor blades running counter to the fluid are automatically reflected in a low (zero) position and also return to the operating position lung. The positioning forces are determined by the fluid flow of both Rotor blades applied.

In vorteilhafter Weise genügen hierbei zwei übereinander angeordnete Blätterrotoren mit um 90° zueinander versetzten Blättern, um bei aus beliebiger horizontaler Richtung angreifende Strömungen eine Drehung des ganzen Pananemonenrades zu erzeugen.Advantageously, two superimposed ones are sufficient Blade rotors with blades offset by 90 ° to one another currents attacking any horizontal direction a rotation of the whole pananemone wheel.

In den Unteransprüchen 2 bis 8 sind vorteilhafte Ausgestaltungen des Erfindungsgegenstandes aufgeführt.Advantageous refinements are in the subclaims 2 to 8 of the subject of the invention listed.

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispieles veranschaulicht. Es zeigtThe invention is in the drawing using an exemplary embodiment illustrated. It shows

Fig. 1 eine perspekt. Seitenansicht der erfindungsge­ mäßen Windkraftmaschine in Wirkstellung; Fig. 1 is a perspective. Side view of the wind power machine according to the invention in the active position;

Fig. 2 eine Draufsicht auf die Windkraftmaschine gemäß Fig. 1; FIG. 2 shows a top view of the wind turbine according to FIG. 1;

Fig. 3 die Ausgangsstellung der Windkraftmaschine. Fig. 3 shows the starting position of the wind turbine.

An einer Drehachse 1 sind zwei Wellen 2 und 3 drehbar gelagert, an denen je um 90° zueinander und übereinander versetzt angeordnete Ro­ torblätter 4 a und 4 b, sowie 5 a und 5 b, frei schwenkbar aufgehängt sind. Wie in Fig. 3 in ihrer Ausgangsstellung zu sehen, sind die Rotor­ blätter einer Seite 4 a und 5 a zu denen der anderen Seite 4 b und 5 b um je 90° schäg nach auswärts gespreizt, so daß sie zu einer mit der Drehachse zusammenfallenden vertikalen Ebene je einen Winkel von 45° einschließen.On an axis of rotation 1 two shafts 2 and 3 are rotatably mounted, on each of which 90 ° to each other and staggered Ro leaf 4 a and 4 b , and 5 a and 5 b , are freely pivoted. As can be seen in Fig. 3 in its initial position, the rotor blades are a side 4 a and 5 a to those of the other side 4 b and 5 b spread outwards by 90 ° each, so that they coincide with the axis of rotation include an angle of 45 ° in the vertical plane.

Jedem der Rotorblätter 4 und 5 ist an der Drehachse ein gefederter Anschlag 6 zugeordnet.A sprung stop 6 is assigned to each of the rotor blades 4 and 5 on the axis of rotation.

Wie in Fig. 1 dargestellt, wird das in der Zeichnungsebene links lie­ gende Rotorblatt 4 a durch den anströmenden Wind gegen den zugeordne­ ten Anschlag 6 angedrückt und das Rotorblatt 4 b in freier Nullstel­ lung angehoben. Die Drehmomente beider Rotorblätter 4 a und 4 b werden dabei zur Verstellung ausgenutzt.As shown in FIG. 1, the rotor blade 4 a lying in the plane of the drawing on the left is pressed against the associated stop 6 by the inflowing wind and the rotor blade 4 b is raised in free zero position. The torques of both rotor blades 4 a and 4 b are used for the adjustment.

Der zwischen der linken und der rechten Seite unterschiedlich große Strömungswiderstand versetzt das ganze Pananemonenrad in Drehung und es kommen dabei abwechselnd die Rotorblätter 4 und 5 in Arbeitsstel­ lung.The flow resistance of different sizes between the left and the right side sets the whole pananemone wheel in rotation and the rotor blades 4 and 5 alternate in the working position.

Die Drehbewegung wird durch einen nicht dargestellten Antrieb zur Ar­ beitsleistung abgenommen.The rotary movement is Ar by a drive, not shown benefits decreased.

Claims (8)

1. Wind- bzw. Wasserkraftmaschine mit zwei beidseitig an einer verti­ kalen Drehachse einander zugeordneten Rotorblättern wie Flügel oder Schaufeln, die durch eine Fluidströmung angetrieben werden, dadurch gekennzeichnet, daß wenigstens ein Paar Rotorblätter (5 oder 4) beidseitig der vertikalen Drehachse (1), einander gegenüberliegend, an einer an der Drehachse (1) gelagerten Welle (2 oder 3) frei nach unten durchhängend, in einem Winkel von 45° zur vertikalen mit der Drehachse (1) zusammenfallenden Ebene auseinandergespreizt angeordnet sind, so daß sie einen Gesamtwinkelabstand von 90° zueinander aufweisen und bei Fluid­ anströmung der Rotorblätter (4 a und 4 b) bzw. (5 a und 5 b) das der Strömung entgegengerichtete Rotorblatt (4 a) jeweils gegen den Anschlag (6) angedrückt und das zugeordnete Rotorblatt (4 b) in rückwärtiger Nullstellung gehalten ist.1. Wind or water power machine with two mutually associated rotor blades on a verti cal axis of rotation, such as blades or blades, which are driven by a fluid flow, characterized in that at least one pair of rotor blades ( 5 or 4 ) on both sides of the vertical axis of rotation ( 1 ) , opposite each other, freely hanging down on a shaft ( 2 or 3 ) mounted on the axis of rotation ( 1 ), at an angle of 45 ° to the vertical plane coinciding with the axis of rotation ( 1 ) are spread apart so that they have a total angular distance of 90 ° to each other and when the flow of fluid flows into the rotor blades ( 4 a and 4 b) or ( 5 a and 5 b), the rotor blade ( 4 a) opposite the flow is pressed against the stop ( 6 ) and the associated rotor blade ( 4 b ) is held in the reverse zero position. 2. Vorrichtung nach Patentanspruch 1, dadurch gekennzeichnet, daß die Rotorblätter (4 und 5) etwas oberhalb ihrem Schwerpunkt an den Wellen (2 und 3) aufgehängt sind.2. Device according to claim 1, characterized in that the rotor blades ( 4 and 5 ) are suspended slightly above their center of gravity on the shafts ( 2 and 3 ). 3. Vorrichtung nach Patentanspruch 1 oder 1 und 2, dadurch gekenn­ zeichnet, daß zwischen der Drehachse (1) und den Rotorblättern (4 und 5) Dämpfungselemente angeordnet sind.3. Device according to claim 1 or 1 and 2, characterized in that damping elements are arranged between the axis of rotation ( 1 ) and the rotor blades ( 4 and 5 ). 4. Vorrichtung nach Patentanspruch 1 und mindestens einem der folgen­ den, dadurch gekennzeichnet, daß die Anschläge (6) gefedert sind. 4. Device according to claim 1 and at least one of the follow the, characterized in that the stops ( 6 ) are spring-loaded. 5. Vorrichtung nach Patentanspruch 1 und mindestens einem der fol­ genden, dadurch gekennzeichnet, daß wenigstens zwei Rotorblatt­ stufen (4 und 5) an der Drehachse (1) angeordnet und die Ro­ torblätter (4 und 5) der einzelnen Stufen zu der jeweils vorher­ gehenden versetzt angeordnet sind.5. Device according to claim 1 and at least one of the fol lowing, characterized in that at least two rotor blade stages ( 4 and 5 ) arranged on the axis of rotation ( 1 ) and the Ro torblätter ( 4 and 5 ) of the individual stages to the respective previous one are staggered. 6. Vorrichtung nach Patentanspruch 1 und mindestens einem der fol­ genden Patentansprüche, dadurch gekennzeichnet, daß der Durchmes­ ser der Rotoren von unten nach oben abnimmt.6. Device according to claim 1 and at least one of the fol gene claims, characterized in that the diam of the rotors decreases from bottom to top. 7. Vorrichtung insbesondere nach Patentanspruch 1 oder Patentan­ spruch 1 und mindestens einem der folgenden, dadurch gekennzeich­ net, daß wenigstens zwei Rotorpaare (4 und 5) zu einem Rotor­ kreuz zusammengefaßt sind, wobei die Wellen in geringem Abstand übereinander angeordnet sind.7. The device in particular according to claim 1 or claim 1 and at least one of the following, characterized in that at least two pairs of rotors ( 4 and 5 ) are combined to form a rotor, the shafts being arranged at a short distance above one another. 8. Vorrichtung nach Patentanspruch 1 und mindestens einem der folgen­ den Ansprüche, dadurch gekennzeichnet, daß die Rotorblätter an ihren äußeren Enden einen Abbug aufweisen, der das Anlaufen auch in radialer Stellung begünstigt.8. The device according to claim 1 and at least one of the follow the claims, characterized in that the rotor blades their outer ends have a turn that also tarnishes favored in the radial position.
DE19873702234 1987-01-27 1987-01-27 Wind or water-powered engine Withdrawn DE3702234A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873702234 DE3702234A1 (en) 1987-01-27 1987-01-27 Wind or water-powered engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873702234 DE3702234A1 (en) 1987-01-27 1987-01-27 Wind or water-powered engine

Publications (1)

Publication Number Publication Date
DE3702234A1 true DE3702234A1 (en) 1988-08-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873702234 Withdrawn DE3702234A1 (en) 1987-01-27 1987-01-27 Wind or water-powered engine

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996012105A1 (en) * 1994-10-17 1996-04-25 Adant Pierre Paul Multiple-shaft windmills
WO2003014565A1 (en) * 2001-08-08 2003-02-20 Vladimiros Manelidis Wind or water generator with rotating blades
WO2004072473A1 (en) * 2003-02-15 2004-08-26 Windabeast Limited Vertical axis wind or water turbine
WO2007009155A1 (en) * 2005-07-15 2007-01-25 Frederick Herman Sundermann Electricity generating apparatus from a flow of water such as tide, river or the like.
WO2008053134A1 (en) * 2006-11-02 2008-05-08 Claire Alice Imogen Price Wind generator
DE102009028946A1 (en) * 2009-08-27 2011-03-03 Gortat, Manfred, Dipl.-Ing. Wind turbine for converting wind force into electricity or mechanical force, has rotor blades tiltable between two positions around drag axes, and coupling device provided for synchronous pivoting of rotor blades between positions
US7922452B2 (en) * 2005-12-05 2011-04-12 Flavio Francisco Dulcetti Filho Eolic converter
IT202200000242A1 (en) * 2022-01-14 2023-07-14 Aldo Benincasa WIND POWER WITH SELF-ROTATING PROPELLERS

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419384A (en) * 1945-10-09 1947-04-22 Edward E Wilson Fluid power wheel
DE2004687A1 (en) * 1970-02-03 1971-08-12 Lorentz H Wind-wing wheel with flywheels that can be swiveled without a stick
DE8302855U1 (en) * 1983-02-03 1983-07-07 Svátek, František, 3509 Morschen WINGED WHEEL
DE3217359A1 (en) * 1982-05-08 1983-11-17 Erich Herter TURBINE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419384A (en) * 1945-10-09 1947-04-22 Edward E Wilson Fluid power wheel
DE2004687A1 (en) * 1970-02-03 1971-08-12 Lorentz H Wind-wing wheel with flywheels that can be swiveled without a stick
DE3217359A1 (en) * 1982-05-08 1983-11-17 Erich Herter TURBINE
DE8302855U1 (en) * 1983-02-03 1983-07-07 Svátek, František, 3509 Morschen WINGED WHEEL

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996012105A1 (en) * 1994-10-17 1996-04-25 Adant Pierre Paul Multiple-shaft windmills
WO2003014565A1 (en) * 2001-08-08 2003-02-20 Vladimiros Manelidis Wind or water generator with rotating blades
WO2004072473A1 (en) * 2003-02-15 2004-08-26 Windabeast Limited Vertical axis wind or water turbine
US7284949B2 (en) 2003-02-15 2007-10-23 Wab Energy Systems Limited Vertical axis wind or water turbine
WO2007009155A1 (en) * 2005-07-15 2007-01-25 Frederick Herman Sundermann Electricity generating apparatus from a flow of water such as tide, river or the like.
AU2006272429B2 (en) * 2005-07-15 2012-05-03 Sundermann Water Power Ltd Electricity generating apparatus from a flow of water such as tide, river or the like
US8197206B2 (en) 2005-07-15 2012-06-12 Sundermann Water Power Ltd Apparatus for generating electricity from a flow of water such as a tide, river or the like
AP2700A (en) * 2005-07-15 2013-07-17 Frederick H Sundermann Electricity generating apparatus from a flow of water such as tide, river or the like
US7922452B2 (en) * 2005-12-05 2011-04-12 Flavio Francisco Dulcetti Filho Eolic converter
WO2008053134A1 (en) * 2006-11-02 2008-05-08 Claire Alice Imogen Price Wind generator
DE102009028946A1 (en) * 2009-08-27 2011-03-03 Gortat, Manfred, Dipl.-Ing. Wind turbine for converting wind force into electricity or mechanical force, has rotor blades tiltable between two positions around drag axes, and coupling device provided for synchronous pivoting of rotor blades between positions
IT202200000242A1 (en) * 2022-01-14 2023-07-14 Aldo Benincasa WIND POWER WITH SELF-ROTATING PROPELLERS

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