DE102021125317A1 - Wind turbine module with improved efficiency - Google Patents

Abstract

The present invention relates to a wind turbine module (12) with an upper housing part (1) and an opposite lower housing part (2), which form an intermediate space spaced apart from one another, in which a vertical mast (7) with a wind turbine (4) with a rotor is arranged centrally , the wind turbine being rotatable about the mast, the upper housing part (1) having an upper lateral surface (1a) towards the intermediate space and the lower housing part (2) having a lower lateral surface (2a) towards the intermediate space and the upper lateral surface (1a) of a outer upper edge (1b) towards the mast (7) and down to a rotor volume area and the lower lateral surface (2a) from an outer lower edge (2b) towards the mast (7) and up to the rotor volume area curved at the top, the upper (1a) and lower lateral surface (2a) between the upper (1b) and lower edge (2b) having a vertical air inlet diameter (D1) and at the point of the mast (7) a comparatively smaller central flow diameter (D2) form.

Description

The present invention relates to a wind turbine module with improved efficiency according to the preamble of claim 1.

Known wind turbine modules are sized and designed to be stacked together or in a scaffold to allow for scalable wind turbines.

DE 10 2019 107 786 A1 discloses, for example, a modular wind power module comprising two or more wind turbines attached to a vertical mast member connectable to a main mast substantially parallel thereto.

DE 10 2018 106 317 A1 discloses, for example, a modular wind power module with a wind turbine, which is designed in such a way that several such wind power modules can be fastened one above the other and to one another.

CH710234A2 discloses a modular wind turbine in which several of the wind turbines can be integrated into an array frame. At the same time, solar panels are also integrated into it. When the wind direction changes, however, the efficiency decreases accordingly, with the array structure being rigidly connected to the ground.

DE10160836A1 discloses a modular wind turbine in the field of large-scale turbines, comprising wind turbine modules arranged vertically one above the other and horizontally next to one another, each of which has a vertical frame which can be bolted to one another. If the wind direction changes, the efficiency decreases accordingly. The entire rigid array framework is impractical to rotate.

DE102011122720A1 discloses a wind turbine in which two wind power modules are arranged vertically one above the other, each comprising a common vertical rotor axis, on which rotor blades are mounted in each wind power module, which drive the common rotor axis. The generator for generating electricity is located at the bottom of the foot. For this reason, the system can only be modularly scaled to a limited extent, since the generator would also have to be replaced if it were not oversized right from the start. This also makes different generators necessary.

DE102014008211B3 discloses a modular wind power plant with wind power modules arranged one above the other and side by side in a honeycomb pattern. An optimized area coverage of the rotors of the wind power modules is achieved. If the wind direction were to turn, the entire rigid array structure would have to rotate as well, which cannot be made practicably rotatable.

The known systems are not so practical on house roofs, and an even better degree of efficiency and the lowest possible noise pollution are desired.

The object of the invention, in order to eliminate the disadvantages of the prior art, is therefore to provide a wind turbine module that can be connected as well as possible to neighboring wind turbine modules of the same design and has the best possible efficiency and the lowest possible noise development.

The above object is solved by a device and a method according to the features of independent claim 1 . Further advantageous embodiments of the invention are specified in the dependent claims.

1. a) ein Gehäuse aus einem Gehäuseoberteil und einem gegenüberliegenden Gehäuseunterteil, die beabstandet zueinander einen Zwischenraum bilden, in dem zentrisch ein vertikaler Mast und seitlich vertikal mindestens ein Verbindungsteil angeordnet ist, die allesamt mechanisch miteinander verbunden sind, wobei das Gehäuse eine Außenkontur mit mindestens einer mechanischen Befestigungsschnittstelle aufweist und der Zwischenraum als ein Luftkanal ausgebildet ist, der jeweils nach außen offen ist;
2. b) eine Windturbine mit einem Statorteil mit Generator und einem Rotor mit mindestens einem Rotorblatt, das um eine Rotorachse drehbar ist, wobei das Statorteil mit dem Mast um dessen Mastachse drehbar verbunden ist, so dass sich das jeweilige Rotorblatt innerhalb eines im Wesentlichen elliptischen Volumenbereichs bewegt; dadurch gekennzeichnet, dass
3. c) das Gehäuseoberteil zum Zwischenraum hin eine obere Mantelfläche und das Gehäuseunterteil zum Zwischenraum hin eine untere Mantelfläche aufweisen, die zueinander windkanalmäßig aerodynamisch verlaufen, indem die obere Mantelfläche von einem äußeren oberen Rand zum zentrisch angeordneten Mast und bis zum elliptischen Volumenbereich des jeweiligen Rotorblatts hin nach unten gewölbt ist und die untere Mantelfläche von einem äußeren unteren Rand zum zentrisch angeordneten Mast und bis zum elliptischen Volumenbereich der Rotorblätter hin nach oben gewölbt ist, wobei in einer vertikalen Ebene, in der der Mast liegt, gesehen, die obere und untere Mantelfläche zwischen dem oberen und unteren Rand einen vertikalen Lufteinlassdurchmesser und an der Stelle des Masts einen im Vergleich zum vertikalen Lufteinlassdurchmesser kleineren zentralen Strömungsdurchmesser bilden, so dass eine einströmende Luft zum elliptischen Volumenbereich hin konzentriert oder beschleunigt und der Wirkungsgrad des Windturbinenmoduls dadurch verbessert wird.

According to the invention, a wind turbine module is provided which has the following features:

1. a) a housing consisting of a housing upper part and an opposite housing lower part, which form an intermediate space at a distance from one another, in which a vertical mast is arranged centrally and at least one connecting part is arranged vertically on the side, all of which are mechanically connected to one another, the housing having an outer contour with at least one mechanical Has attachment interface and the gap is formed as an air duct, each of which is open to the outside;
2. b) a wind turbine with a stator part with a generator and a rotor with at least one rotor blade which can be rotated about a rotor axis, the stator part being connected to the mast so that it can be rotated about its mast axis, so that the respective rotor blade moves within an essentially elliptical volume area ; characterized in that
3. c) the upper housing part has an upper lateral surface towards the intermediate space and the lower housing part has a lower lateral surface towards the intermediate space, which run towards one another aerodynamically in the manner of a wind tunnel, in that the upper lateral surface extends from an outer upper edge to the centrally arranged mast and up to the elliptical volume area of the respective rotor blade is arched at the bottom and the lower lateral surface leaves from an outer lower edge to the centrally arranged mast and up to the elliptical volume area of the rotor It is arched upwards from behind, seen in a vertical plane in which the mast lies, the upper and lower lateral surface between the upper and lower edge has a vertical air inlet diameter and, at the point of the mast, a central flow diameter that is smaller than the vertical air inlet diameter form, so that an inflowing air is concentrated or accelerated towards the elliptical volume area and the efficiency of the wind turbine module is thereby improved.

In order to concentrate or accelerate the inflowing air towards the elliptical volume area, the upper and lower shell surfaces are designed in such a way that the central flow diameter is smaller than the vertical air inlet diameter. In other words, the lower lateral surface and the upper lateral surface at least partially form a funnel from the outer lower and upper edge towards the elliptical volume area, through which the air is accelerated and compressed. In comparison to a wind turbine with a rotor with a fixed funnel, the lateral surface of which rotates with the rotor axis, the funnel in the wind turbine module according to the invention, which is partially formed by the upper and lower lateral surface, is open on all horizontal sides, so that the rotor can always align itself with one wind direction.

The upper and lower lateral surfaces are preferably designed in such a way that the wind inlet direction for the wind turbine module can take place from all sides. However, it is also conceivable that the upper and lower lateral surface are designed to allow only a horizontal range of 60° as the wind inlet direction. Alternatively, the upper and lower lateral surfaces can preferably be designed to allow a horizontal range of 90° as the wind inlet direction, with opposite side walls being closed to the right and left of the wind inlet direction, with an intermediate front side and a rear side being open and having a funnel shape to the central area .

The design of the wind turbine module according to the invention with the upper and lower lateral surface generates an accelerated air flow from the inflowing air, which on the one hand generates a higher degree of efficiency in the turbine, and on the other hand air turbulence is also broken off more quickly in areas of short distances between the rotor ends and the lateral surfaces that, in addition to the better efficiency, less noise is also generated. Noise reduction is extremely important and a good step forward, especially on the roofs of residential buildings. And as described above, the wind turbine module is not only designed for a frontal wind direction, but also allows the wind turbine to rotate around the mast axis and align with the wind within a wind tunnel formed by the upper and lower shell surface.

The housing consisting of the housing upper part and the opposite housing lower part and the vertical mast and the lateral at least one connecting part are preferably all rigidly connected to one another, with the rigid connection also being able to have damping elements. Preferably, the housing has damping elements towards the wind turbine, such as rubber elements or thrust piston dampers, in order to dampen vibration to a mounting structure to which the wind turbine module is attached.

Preferably, the housing consisting of the housing upper part and the opposite housing lower part has a cubic or cuboid outer contour, which are known as modular elements so that they can be easily connected to one another. The mechanical attachment interface serves to attach the wind turbine module to a wall, a framework or an adjacent wind turbine module, for example. The mechanical attachment interface can have all forms and types that are known in the prior art, such as holes and screws or rivets, and/or grooves and joints, and/or parts that can be plugged into one another. Preferably, the mechanical attachment interface comprises fasteners configured to predeterminedly hold the wind turbine module firmly enough to be installable on top of buildings and/or anchored to a variety of other wind turbine modules.

Preferably, the laterally vertical at least one connecting part comprises at least one strut on each outermost vertical side and/or a monolithic structure which has lateral openings between the struts in order to give the housing sufficient stability through the struts or the at least one strut.

Preferably, the upper housing part and the lower housing part each comprise a structure of connecting struts and inserts, which have the respective upper and lower lateral surface.

The upper lateral surface is preferably curved downwards from the outer upper edge towards the centrally arranged mast in a substantially truncated cone shape. And just as preferably, the lower lateral surface is curved upwards from the outer lower edge towards the centrally arranged mast, essentially in the shape of a truncated cone. At an upper curvature of the lower lateral surface and at a lower curvature of the upper lateral surface, in each case near the mast, a circular disk-shaped surface is preferably formed.

Preferably, the vertical air inlet diameter is at least 10% larger than the central flow diameter in a horizontal range of 60°.

Preferably, the vertical air inlet diameter is at least 10% larger than the central flow diameter on all sides, i.e. in a horizontal range of 360°.

The vertical air inlet diameter is preferably at least 20% larger on all sides than the central flow diameter.

The rotor axis preferably lies in a horizontal plane +/-10°.

For the sake of clarity, the elliptical area has, strictly speaking, a cross section around the axis of the mast, which describes a semicircle with a radius of the rotor on the outside right and left, the right and left semicircles being closed by a central upper and lower circular plateau, as those skilled in the art will white. The volume area is created by the rotating rotor blades when they rotate and the wind turbine rotates slowly around the mast axis.

The rotor can preferably have one or more rotor blades.

The respective rotor blade preferably has a winglet at an outer end. The winglet is preferably angled at the outer end of the respective rotor blade at a predetermined winglet angle to the longitudinal axis of the rotor blade, which is 90°+/-5°.

The respective winglet preferably has a predetermined winglet length, which is preferably between 0-1% or between 1%-2.5% or between 2.5%-5% or more than 5% in relation to a length of the rotor blade .

The respective winglet is preferably designed towards the suction side or towards the air outlet. Alternatively, the respective winglet is preferably designed towards the pressure side or towards the air inlet.

The upper and lower lateral surfaces in the respective central area are preferably adapted to the winglets moving past in such a way that blade tip vortices at the ends of the rotor blades or on the winglets are reduced to such an extent that this results in an increase in efficiency of at least 1%.

A particular advantage of the winglets is that turbulent blade tip vortices in the area of the winglets and between the winglets and the central area of the respective upper or lower lateral surface subside more quickly and less noise is produced. The advantage lies in the resulting higher efficiency of the wind turbine and in the lower level of noise pollution compared to the same wind turbine without winglets.

A circular area-shaped central area is preferably formed in the upper lateral surface above the elliptical volume area, which has a smallest gap distance from the elliptical volume area of the rotor blades, which is, for example, less than 80 mm, but also less than 70 mm or less than 60 mm or 50 mm can be. The same applies to the gap distance between the lower lateral surface and the elliptical volume area, in which the same circular area-shaped central area is preferably formed, which has a smallest gap distance from the elliptical volume area of the rotor blades, which is, for example, less than 80 mm, but can also be less than 70 mm or can be smaller than 60 mm or 50 mm.

The smallest gap distance is preferably less than 50 mm or less than 30 mm or less than 20 mm or less than 10 mm. The smaller the smallest gap distance, the higher the acceleration of the flow and the better the blade tip vortices can be suppressed.

The upper or lower lateral surface preferably forms an angle of inclination from the respective edge on the way to the respective central area in relation to the central area in the form of a circular area, which angle is between 2° and 10°.

Indentations are preferably made in the upper lateral surface or in the lower lateral surface, which reduce wind noise on the associated lateral surface. The indentations are preferably designed as round or oval hole-like indentations. The indentations preferably have a diameter of 5-10 mm or 10-20 mm or larger.

Preferably, protective screens are mounted on external surfaces around the housing, sized to thereby protect birds or other creatures from entering the space between the rotor.

Preferred embodiments according to the present invention are illustrated in the following drawings and detailed description, but are not intended to limit the present invention solely thereto.

• 1 eine perspektivische Front-Seitenansichtsskizze einer bevorzugten Ausführungsform eines Windturbinenmoduls mit einem Gehäuse aus einem Gehäuseoberteil und einem gegenüberliegenden Gehäuseunterteil, die beabstandet zueinander einen Zwischenraum bilden, in dem zentrisch ein vertikaler Mast und seitliche Verbindungsteile angeordnet sind, die allesamt miteinander verbunden sind; in dem Zwischenraum ist mit dem Mast eine Windturbine mit einem Rotor mit zwei Rotorblättern verbunden; Enden der Rotorblätter beschrieben bei einem Drehen um eine Rotorachse einen gestrichelten Kreis;
• 2 eine perspektivische Skizze als Front-Seitenansicht der bevorzugten Ausführungsform des Windturbinenmoduls gemäß 1 und 2 mit dem Gehäuse, das nahe der Mitte geschnitten ist;
• 3 eine Seitenansichtsskizze der bevorzugten Ausführungsform des Windturbinenmoduls gemäß 1 und 2, die im Wesentlichen die obere und untere Mantelfläche als Schnittbild und die Windturbine mit dem Rotor dazwischen und mit Luftströmungen und Blattendenwirbeln darstellt;
• 4 eine perspektivische Front-Seitenansichtsskizze des Windturbinenmoduls gemäß 1 und 2, das im Wesentlichen nur einen horizontalen strichlierten Bereich für eine Windeinlassrichtung darstellt;
• 5 eine Frontansichtsskizze des Windturbinenmoduls gemäß 1 und 2, das im Wesentlichen die obere und untere Mantelfläche als Querschnitt und die Windturbine mit dem Rotor dazwischen darstellt; die Rotorblätter beschreiben eine strichlierte Kreisbahn;
• 6 eine Frontansichtsskizze des Windturbinenmoduls einer zweiten bevorzugten Ausführungsform, deren obere und untere Mantelfläche als Querschnitt und die Windturbine mit dem Rotor dazwischen darstellt; die Rotorblätter beschreiben eine strichlierte Kreisbahn;
• 7 eine perspektivische Ansicht einer bevorzugten Ausführungsform der unteren Mantelfläche;
• 8 eine perspektivische Ansicht einer anderen bevorzugten Ausführungsform der unteren Mantelfläche, die zum Rotor hin Vertiefungen aufweist, um eine Geräuschreduzierung zu bewirken;
• 9 eine Seitenschnittansicht als Ausschnitt einer bevorzugten Ausführungsform der oberen Mantelfläche in Bezug zu einem Blattende des Rotorblatts, das mit einem Winglet ausgebildet ist; und
• 10 als eine Seitenansichtsskizze eines Gebäudes mit mehreren Windturbinenmodulen auf dessen Dach.

Show it

• 1 a perspective front side view sketch of a preferred embodiment of a wind turbine module with a housing consisting of a housing upper part and an opposite housing lower part, which form an intermediate space spaced apart from one another, in which a vertical mast and lateral connecting parts are arranged centrally, all of which are connected to one another; in the space, a wind turbine having a rotor with two blades is connected to the mast; Ends of the rotor blades described a dashed circle when rotating about a rotor axis;
• 2 Fig. 12 is a front-side perspective sketch of the preferred embodiment of the wind turbine module according to Figs 1 and 2 with the casing cut near the middle;
• 3 a side view sketch of the preferred embodiment of the wind turbine module according to 1 and 2 Figure 12, which essentially shows the upper and lower mantle surfaces in section and the wind turbine with the rotor in between and with air currents and blade tip vortices;
• 4 a front-side perspective view sketch of the wind turbine module according to FIG 1 and 2 , which essentially represents only a horizontal dashed area for a wind inlet direction;
• 5 a front view sketch of the wind turbine module according to FIG 1 and 2 12, which essentially shows the upper and lower shell surfaces in cross-section and the wind turbine with the rotor in between; the rotor blades describe a dashed circular path;
• 6 a front view sketch of the wind turbine module of a second preferred embodiment, which shows the upper and lower shell surface in cross section and the wind turbine with the rotor between them; the rotor blades describe a dashed circular path;
• 7 a perspective view of a preferred embodiment of the lower lateral surface;
• 8th a perspective view of another preferred embodiment of the lower shell surface, which has indentations towards the rotor in order to bring about a noise reduction;
• 9 a side sectional view as a detail of a preferred embodiment of the upper lateral surface in relation to a blade end of the rotor blade, which is formed with a winglet; and
• 10 as a side view sketch of a building with several wind turbine modules on its roof.

Detailed description of exemplary embodiments

A first embodiment of a wind turbine module 12 with improved efficiency is shown as a sketch in 1 shown.

1. a) ein Gehäuse aus einem Gehäuseoberteil 1 und einem gegenüberliegenden Gehäuseunterteil 2, die beabstandet zueinander einen Zwischenraum bilden, in dem zentrisch ein vertikaler Mast 7 und seitlich vertikal mindestens ein Verbindungsteil 3 angeordnet ist, die allesamt mechanisch miteinander verbunden sind. Das Gehäuse weist eine Außenkontur mit mindestens einer mechanischen Befestigungsschnittstelle auf, die beispielsweise in 1 am Gehäuseoberteil 1 und am Gehäuseunterteil 2 jeweils acht Verbindungselemente 8 aufweist. Der Zwischenraum ist als ein Luftkanal ausgebildet, der jeweils nach außen offen ist;
2. b) eine Windturbine 4 mit einem Statorteil mit Generator und einem Rotor mit mindestens einem Rotorblatt 5, das um eine Rotorachse drehbar ist. Die bevorzugte Ausführungsform nach 1 weist zwei Rotorblätter 5 auf. Das Statorteil ist mit dem Mast 7 um dessen Mastachse drehbar verbunden, so dass sich das jeweilige Rotorblatt 5 innerhalb eines im Wesentlichen elliptischen Volumenbereichs bewegt; Enden der Rotorblätter 5 beschreiben eine Kreisbahn 5a. Bevorzugt sind an den Enden der Rotorblätter 5 Winglets 6 ausgebildet, um einen besseren Wirkungsgrad der Windturbine zu erhalten;
3. c) das Gehäuseoberteil 1 weist zum Zwischenraum hin eine obere Mantelfläche 1a auf und das Gehäuseunterteil 2 weist zum Zwischenraum hin eine untere Mantelfläche 2a auf, die zueinander windkanalmäßig aerodynamisch verlaufen, indem die obere Mantelfläche 1a von einem äußeren oberen Rand 1b zum zentrisch angeordneten Mast 7 und bis zum elliptischen Volumenbereich des jeweiligen Rotorblatts 5 hin nach unten gewölbt ist und die untere Mantelfläche 2a von einem äußeren unteren Rand 2b zum zentrisch angeordneten Mast 7 und bis zum elliptischen Volumenbereich der Rotorblätter 5 hin nach oben gewölbt ist. Dabei bilden in einer vertikalen Ebene, in der der Mast 7 liegt, die obere 1a und untere Mantelfläche 2a zwischen dem oberen Rand 1b und unteren Rand 2b einen vertikalen Lufteinlassdurchmesser D1 und an der Stelle des Masts 7 einen kleineren zentralen Strömungsdurchmesser D2. Durch die obere 1a und untere Mantelfläche 2a, die trichterförmig von außen zu einem Zentrum hin, in dem der Mast 7 sitzt, ausgebildet sind, wird eine einströmende Luft zum elliptischen Volumenbereich hin konzentriert und beschleunigt, und der Wirkungsgrad des Windturbinenmoduls 12 wird dadurch verbessert.

Essentially, the wind turbine module 12 includes the following:

1. a) a housing consisting of a housing upper part 1 and an opposite housing lower part 2, which form an intermediate space spaced apart from one another, in which a vertical mast 7 is arranged centrally and at least one connecting part 3 is arranged vertically at the side, all of which are mechanically connected to one another. The housing has an outer contour with at least one mechanical attachment interface, which can be found, for example, in 1 has eight connecting elements 8 each on the upper housing part 1 and on the lower housing part 2 . The space is formed as an air duct, which is open to the outside;
2. b) a wind turbine 4 with a stator part with a generator and a rotor with at least one rotor blade 5 which can be rotated about a rotor axis. The preferred embodiment according to 1 has two rotor blades 5 . The stator part is rotatably connected to the mast 7 about its mast axis, so that the respective rotor blade 5 moves within an essentially elliptical volume area; Ends of the rotor blades 5 describe a circular path 5a. Winglets 6 are preferably formed at the ends of the rotor blades 5 in order to obtain a better efficiency of the wind turbine;
3. c) the upper housing part 1 has an upper lateral surface 1a towards the intermediate space and the lower housing part 2 has a lower lateral surface 2a towards the intermediate space, which run towards one another aerodynamically in a wind tunnel manner in that the upper lateral surface 1a moves from an outer upper edge 1b to the centrally arranged mast 7 and is curved downwards up to the elliptical volume area of the respective rotor blade 5 and the lower lateral surface 2a is curved upwards from an outer lower edge 2b to the centrally arranged mast 7 and up to the elliptical volume area of the rotor blades 5 . This form in a vertical plane in which the mast 7 is located, the upper 1a and lower lateral surface 2a between the upper edge 1b and lower edge 2b has a vertical air inlet diameter D1 and at the point of the mast 7 a smaller central flow diameter D2. Due to the upper 1a and lower lateral surface 2a, which are funnel-shaped from the outside toward a center in which the mast 7 is seated, an inflowing air is concentrated and accelerated toward the elliptical volume area, and the efficiency of the wind turbine module 12 is thereby improved.

In 3 is shown as a side view, which preferably looks very similar as a cut side view and as an uncut side view, a funnel-shaped inlet of an air flow between the housing upper part 1 and the housing lower part 2 with the vertical air inlet diameter D1 and the central flow diameter D2. In 3 only very few winglets 6 are shown at the blade ends of the rotor blades 5. The curved arrows represent blade tip vortices and air vortices that occur and are reduced by the winglets.

The upper and lower lateral surfaces are preferably designed in such a way that the wind inlet direction for the wind turbine module 12 can take place from all sides. However, it is also conceivable that the upper and lower lateral surface are designed to allow only a horizontal area B1 of, for example, 60° as the wind inlet direction. Such a horizontal area B1 is shown in FIG 4 shown sketchily dashed. The upper and lower lateral surfaces can also be designed to allow a horizontal range of 90° or a larger or smaller range as the wind inlet direction. For example, opposite side walls can be closed on the right and left of the wind inlet direction, with an intermediate front side and a rear side being open and having the funnel shape towards the central area.

In 5 the upper 1a and lower lateral surface 2a are shown with the funnel shape between the vertical air inlet diameter D1 and the central flow diameter D2 and the rotor with the rotor blades 5, which describe the circular path 5a with the rotor diameter D3, is shown.

A central area 10, which represents a circular sweeping area of the rotor blades, is formed between the respective jacket surface 1a, 2a and the essentially elliptical volume area of the rotor. The central area 10 is preferably a flat circular surface. Alternatively, preferably, the central area can also have a concave curvature towards the rotor. Between the central area 10 and the rotor there is a gap spacing 9 which, given a central arrangement of the rotor between the upper and lower lateral surface, is one half of a difference between the central flow diameter D2 and the rotor diameter D3. A rotor angle α of the rotor can be defined over the central area, as in 5 and 6 which is defined by two positions of the rotor with a rotor blade tip once over a first end and then at an opposite end of the central region 10.

In 7 a preferred embodiment of the lower lateral surface 2a is shown in a perspective view with the central region 10, which is preferably flat.

In 8th a further preferred embodiment of the lower lateral surface 2a is shown in a perspective view with the central region 10, depressions 13 being formed in the lateral surface, which are preferably used to promote an air flow.

9 shows a section in a side view of the upper lateral surface 1a with the central region 10 above a blade end of the rotor blade 10, since it is formed with a winglet 6. In particular, a preferred pitch angle β of the lateral surface adjacent to the central area 10 is shown therein.

For the sake of clarity, the terms "top" and "bottom" are understood to mean relative locations in the vertical direction, as shown in the figures.

Also, for the sake of clarity, it should be noted that indefinite articles used in conjunction with an item or numerals, such as "an" item, do not numerically limit the item to exactly one item, but rather mean that at least "one" item is meant. This applies to all indefinite articles such as "a", "an" etc.

It is to be understood that when an element is referred to as being "mounted,""connected,""coupled," or "in contact" with another element, then the element is directly on, connected, or coupled to the other element or that there may also be intervening elements that either just intervene or connect or couple or hold the element in contact with the other element. On the other hand, when an element is referred to as being "directly on top of,""directlyconnected,""directlycoupled," or "directly in contact" with another element, it is to be understood that that there are no intervening elements.

Although the terms "first," "second," etc. may be used herein to denote various elements, components, regions, and/or sections, those elements, components, regions, and/or sections are not limited by those terms. The terms are only used to distinguish one element of one component, area or section from another element of another component, area or section. Therefore, a first element, component, region, or section discussed below may be referred to as a second element, component, region, or section without departing from the teachings of the present invention.

Embodiments of the invention are described herein with reference to cross-sectional views that are schematic representations of embodiments of the invention. Therefore, the actual thickness of the components may differ, and deviations from the shapes shown, for example due to manufacturing processes and/or tolerances, are to be expected. Embodiments of the invention are not intended to be limited to the specific shapes of portions illustrated herein, but are intended to include variations in shapes resulting, for example, from the manner of manufacture. A portion illustrated or labeled as square or rectangular also typically has rounded or curved features due to normal manufacturing tolerances. Therefore, the portions shown in the figures are schematic in nature and their shapes are not intended to illustrate the exact shape of any portion of an apparatus or to limit the scope of the invention.

Relational expressions such as "inner", "outer", "upper", "above", "below" and below and similar expressions may be used to express a relationship of one layer or other region to another layer or region to call. It should be understood that these terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures.

For the sake of clarity, the term “comprise” means that when a first device part includes a second device part, this means that the first device part “comprises” the second device part and does not necessarily enclose it in terms of arrangement, unless it is, for example, a description of a positional and formal arrangement; the same applies to a method that can include one or more method steps.

Further possible forms of embodiment are described in the following claims. In particular, the various features of the embodiments described above can also be combined with one another, provided they are not technically mutually exclusive.

The reference signs mentioned in the claims are only for better understanding and in no way limit the claims to the forms shown in the figures.

Reference List

1

housing top

1a

upper surface

1b

upper edge

2

housing base

2a

lower surface

2 B

lower edge

3

connection part

4

Wind turbine with generator

5

rotor blade

5a

circular path (trajectory)

6

winglets

7

mast

8th

fastener

9

gap spacing

10

central area or sweeping area

11

Tip vortices of the rotor blades

12

wind turbine module

13

indentations

14

Building

a

Rotor angle over the central area

β

pitch angle

B1

horizontal area

D1

inlet diameter

D2

central flow diameter

D3

rotor diameter

x, y, z

Cartesian coordinates

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102019107786 A1 [0003]
• DE 102018106317 A1 [0004]
• CH 710234 A2 [0005]
• DE 10160836 A1 [0006]
• DE 102011122720 A1 [0007]
• DE 102014008211 B3 [0008]

Claims (10)

Wind turbine module (12) with improved efficiency, comprising: a) a housing consisting of a housing upper part (1) and an opposite housing lower part (2), which form an intermediate space spaced apart from one another, in which a vertical mast (7) is located centrally and at least one connecting part is located laterally vertically (3) is arranged, all of which are mechanically connected to one another, the housing having an outer contour with at least one mechanical fastening interface and the intermediate space being designed as an air duct which is open to the outside; b) a wind turbine (4) having a stator part with a generator and a rotor with at least one rotor blade (5) which can be rotated about a rotor axis, the stator part being connected to the mast (7) so that it can rotate about its mast axis, so that the respective rotor blade (5) moves within a substantially elliptical volume area; characterized in that c) the upper housing part (1) has an upper lateral surface (1a) towards the intermediate space and the lower housing part (2) has a lower lateral surface (2a) towards the intermediate space, which run towards one another aerodynamically in a wind tunnel, in that the upper lateral surface (1a) is curved downwards from an outer upper edge (1b) to the centrally arranged mast (7) and to the elliptical volume area of the respective rotor blade (5) and the lower lateral surface (2a) from an outer lower edge (2b) to the centrally arranged mast (7) and up to the elliptical volume area of the rotor blades (5) is arched upwards, seen in a vertical plane in which the mast (7) lies, the upper (1a) and lower lateral surface (2a) between the upper (1b) and lower edge (2b) form a vertical air inlet diameter (D1) and at the point of the mast (7) a smaller central flow diameter (D2), so that an inflowing air to the elliptical volume nbereich concentrated out and the efficiency of the wind turbine module (12) is thereby improved. The wind turbine module (12) according to claim 1 , wherein the vertical air inlet diameter (D1) is at least 10% larger than the central flow diameter (D2) in a horizontal area (B1) of 60°. The wind turbine module (12) according to claim 1 , whereby the vertical air inlet diameter (D1) is at least 10% larger than the central flow diameter (D2) on all sides. The wind turbine module (12) according to any one of the preceding claims, wherein the vertical air inlet diameter (D1) is at least 20% greater than the central flow diameter (D2) on all sides. The wind turbine module (12) according to any one of the preceding claims, wherein the rotor blades (5) have winglets (6) at their outer ends. The wind turbine module (12) according to claim 4 , wherein the winglets (6) at the end of the respective rotor blade (5) are angled at a predetermined winglet angle to the longitudinal axis of the rotor blade (5), which is 90° +/- 5° to the longitudinal axis of the rotor blade (5). The wind turbine module (12) according to one of the preceding claims, wherein in the upper lateral surface (1a) above the elliptical volume area a circular area-shaped central area (10) is formed, which has a smallest gap distance (9) to the elliptical volume area of the rotor blades (5), which is smaller than 80 mm, and in the lower lateral surface 1 under the elliptical volume area the same circular area-shaped central area (10) is formed, which has the same smallest gap distance (9) to the elliptical volume area of the rotor blades (5). The wind turbine module (12) according to claim 7 , wherein the smallest gap distance (9) is less than 50 mm or less than 30 mm or less than 20 mm or less than 10 mm. The wind turbine module (12) according to claim 6 , wherein the upper (1a) or lower lateral surface (2a) from the respective edge (1b, 2b) on the way to the respective central area (10) forms a gradient angle (β) in relation to the circular area-shaped central area of between 2° and 10°. The wind turbine module (12) according to one or more of the preceding claims, wherein essentially round or oval hole-like depressions (13) are made in the upper lateral surface (1a) or in the lower lateral surface, the wind noise on the associated lateral surface (1a, 1b) to reduce.

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