DE102017100674A1 - Flow energy installation - Google Patents

Abstract

The present invention relates to a flow energy plant (1) which generates mechanical energy from the flow energy of gaseous or liquid media, irrespective of the flow direction, and converts this energy into electrical energy with at least one generator (12), wherein the flow energy plant comprises at least two rotors (10, 10). 11), each comprising at least one rotor blade (100, 110). The flow energy plant (1) according to the invention is characterized in that the at least two rotors (10, 11) are arranged on a common, vertically oriented axis of rotation (20), each rotor (10, 11) extending along the axis of rotation (20), is associated with the at least one generator (12), wherein the rotor blades (100,110) of the rotors (10,11) are formed and arranged on the flow energy plant (1) that the at least one Rotor blade (100) of the inner rotor (10) within the circular path of the at least one rotor blade (110) of the outer rotor (11) rotates. This embodiment of the flow energy plant (1) allows an increase in the efficiency compared to the known flow energy plants.

Description

Technical area

The present invention relates to a flow energy plant which generates mechanical energy from the flow energy of gaseous or liquid media, irrespective of the flow direction, and converts it into electrical energy with at least one generator, the flow energy plant comprising at least two rotors each having at least one rotor blade.

State of the art

From the utility model DE 20 2014 006 135 U1 is a wind turbine with two rotors known whose goal is an increase in plant performance by a factor of two with no doubling of the total cost (planning, lease fees, material, transport and construction). This goal is achieved by the attachment of a second rotor, which is mounted on the other side of the nacelle and connected to the same generator. In another embodiment, the system is operated by two generators. This construction is based exclusively on horizontal axis.

From the publication DE 10 2014 005 164 A1 For example, there is known a counter-rotating rotor wind turbine that describes a horizontal axle that includes two rotors mounted on an axle that have opposite directions of rotation. One rotor turns the armature of one generator and the second one the stator of the same.

From the European patent EP 2 538 529 A3 is a horizontal axis generator with two counter-rotating rotors are known which have opposite directions of rotation and are mounted directly behind each other, wherein magnetizable rotor shafts are integrated in a generator with two stators, each having a field magnet.

From the European patent DE 600 10 843 T2 is a wind turbine with two counter-rotating rotors are known which have mutual directions of rotation and are each coupled to an electric generator.

A disadvantage of the known flow energy systems is primarily their relatively low efficiency. In addition, known systems are constructed very expensive and require a lot of space.

Presentation of the invention

The present invention is based on the object to provide a flow energy plant, which eliminates the aforementioned disadvantages and allows an increase in efficiency over the known flow energy systems.

According to the invention the above object is achieved according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous embodiments and further developments of the flow energy plant according to the invention are specified in the dependent subclaims.

According to the invention, a flow energy plant of the type mentioned above is characterized in that the at least two rotors are arranged on a common, vertically oriented axis of rotation, wherein each rotor is associated with a vertically aligned shaft extending along the axis of rotation, which is coupled to the at least one generator, wherein the rotor blades of the rotors are formed and arranged on the flow energy plant such that the at least one rotor blade of the inner rotor rotates within the circular path of the at least one rotor blade of the outer rotor.

In a particularly preferred embodiment of the invention, a shaft is coupled to the rotatable stator of the at least one generator, while the other shaft is coupled to the rotatable rotor of the same generator, the direction of rotation of the rotors being opposite. The generator itself is rotatably mounted to implement the rotation of the stator.

Due to the opposite rotational movement of the rotor and stator of the generator, an overall higher speed of the generator is possible. In addition, a part of the otherwise unused / lost flow energy is collected and used by the arrangement of the rotors. The advantage is an increase in the efficiency of the flow energy plant by a high efficiency.

In order to further increase the efficiency, in a further particularly preferred embodiment of the invention, at least two generators are provided, wherein one shaft is coupled to a generator, while the other shaft is coupled to another generator, wherein the direction of rotation of the rotors is opposite or rectified ,

list of figures

Other objects, features, advantages and applications of the flow energy plant according to the invention will become apparent from the following description of an embodiment with reference to the drawing. All described and / or illustrated features, alone or in any combination form the subject matter of the invention, regardless of the summary in individual claims or their dependency.

• 1 die Strömungsenergieanlage in einer perspektivischen Ansicht;
• 2 die Strömungsenergieanlage in der Draufsicht;
• 3a,3b die Strömungsenergieanlage in der Frontansicht sowie in perspektivischer Ansicht in einer Ausführungsform mit mehreren Rotormodulen;
• 4 die Anordnung der Rotoren an einem Generator,
• 5a,5b die Anordnung der Rotoren an zwei Generatoren.

In the drawings show

• 1 the flow energy plant in a perspective view;
• 2 the flow energy plant in plan view;
• 3a . 3b the flow energy plant in the front view and in perspective view in an embodiment with a plurality of rotor modules;
• 4 the arrangement of the rotors on a generator,
• 5a . 5b the arrangement of the rotors to two generators.

Embodiment of the invention

How out 1 can be seen, comprises the flow energy plant according to the invention 1 preferably two rotors 10,11, each with three rotor blades 100,110, wherein the rotors 10,11 on the common, vertically oriented axis of rotation 20 with the at least one generator 12 are connected.

The present three rotor blades 100,110 of the two rotors 10,11 are arranged in this preferred embodiment of the invention to a respective frame-like support 102,112, wherein the holder 112 the outer rotor 11 is formed such that the holder 102 of the inner rotor 10 within the circular path of the bracket 112 the outer rotor 11 can rotate.

2 illustrates the arrangement and design of the brackets 102,112 of the rotor blades 100,110. The diameter of the holder 102 is opposite the diameter of the bracket 112 smaller and thereby allows the rotating arrangement of the rotor blades 100 of the inner rotor 10 opposite the outer rotor 11 ,

In the 3a . 3b is a flow energy plant 1 in front view and in perspective view in an embodiment with a plurality of rotor modules 13 shown. Here are several superimposed rotors modules 13 provided, which in each case at least one inner rotor 10 and at least one outer rotor 11 include. This advantageous construction allows a very space-saving and yet efficient design of the flow system according to the invention.

The flow energy plant 1 is in the illustrated embodiments of a generator 12 containing housing 14 , a supporting base plate 15 and the rotor located on the housing 10,11 constructed. How out 1 as well as the 3a . 3b As can be seen, it is also advantageous to have a cover 16 to provide, which in another embodiment with solar cells 160 Is provided.

4 shows the arrangement of the rotors 10,11 to a generator 12. As shown, the shaft 111 the outer rotor 11 on the rotatable stator 120 of the generator 12 coupled in the sense of an inner rotor while the other shaft 101 of the inner rotor on the rotatable rotor 121 of the generator 12 is coupled. In the illustrated embodiment, the holder 112 the outer rotor 11 directly with the shaft 111 connected and the inner shaft 101 internal to the outer shaft 113. The inner shaft 101 leads to or is coupled to the rotor 121 of the generator 12 ,

The outer wave 111 is about one on the housing 14 provided flange bearing 17 firmly stored.

The generator 12 includes generator coils 122 , a coupling element 123 for the arrangement of the shaft 111 the outer rotor 11 , Permanent magnets 124 and is at its lower end via a positive sliding contact on a slip ring 125 arranged, which allows an electrical power transmission between the mutually rotating components.

The 5a . 5b show the arrangement of the rotors to two generators 12 . 12a where a wave 101 on a generator 12 is coupled while the other wave 111 at another generator 12a coupled, wherein the direction of rotation of the rotors 10,11 is opposite or rectified.

The flow energy plant according to the invention 1 is not limited in its execution to the above-mentioned preferred embodiments. Rather, a variety of design variations are possible, which make use of the solution shown even with fundamentally different type of execution.

LIST OF REFERENCE NUMBERS

1

Flow energy installation

10

inner rotor

11

outer rotor

12

generator

12a

second generator

13

rotor modules

14

Housing / machine house with access

15

baseplate

16

cover

17

Bearing

20

axis of rotation

100

Rotor blades on the inner rotor

101

Shaft on the inner rotor

110

Rotor blades on the outer rotor

111

Shaft on the outer rotor

102

Holder on the inner rotor

112

Holder on the outer rotor

113

Bearing inner rotor

113a

Bearing outer rotor

120

Stator of the generator

121

Rotor of the generator

122

generator coil

123

coupling element

124

permanent magnets

125

slip ring

160

solar cells

161

Carrier of the cover

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 202014006135 U1 [0002]
• DE 102014005164 A1 [0003]
• EP 2538529 A3 [0004]
• DE 60010843 T2 [0005]

Claims (5)

Flow energy plant (1), which generates from the flow energy of gaseous or liquid media, regardless of the direction of flow, mechanical energy and converts it with at least one generator (12) into electrical energy, the flow energy plant at least two rotors (10,11), each with at least a rotor blade (100, 110), characterized in that the at least two rotors (10, 11) are arranged on a common, vertically oriented axis of rotation (20), each rotor (10, 11) extending along the axis of rotation (20), is associated with the at least one generator (12), wherein the rotor blades (100,110) of the rotors (10,11) are formed and arranged on the flow energy plant (1) that the at least one Rotor blade (100) of the inner rotor (10) within the circular path of the at least one rotor blade (110) of the outer rotor (11) rotates. Flow energy plant (1) after Claim 1 characterized in that one shaft (101) is coupled to the rotatable stator (120) of the at least one generator (12) while the other shaft (111) is coupled to the rotatable rotor (121) of the generator (12) Flow energy plant (1) after Claim 2 , characterized in that the direction of rotation of the rotors (10,11) is opposite. Flow energy plant (1) after Claim 1 characterized in that at least two generators (12) are provided, one shaft (101) being coupled to one generator (12) while the other shaft (111) is coupled to another generator (12), the direction of rotation being Rotors (10,11) is opposite or rectified. Flow energy plant (1) according to one of the preceding claims, characterized in that a plurality of superposed rotors modules (13) are provided which each comprise at least one inner rotor (10) and at least one outer rotor (11).

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