Wind turbine system for power generation

Abstract

A wind turbine system is provided. The wind turbine system includes a flow integration duct and an air driven rotor assembly. The flow integration duct is closed and extends from an integration duct upstream end to an integration duct downstream end. The flow integration duct includes an airflow capture inlet at the integration duct upstream end and a plurality of flow dividers that subdivide a cross-sectional area of the flow integration duct into three or more flow paths. Each flow divider and each flow path extends between the integration duct upstream end and the integration duct downstream end. Each flow divider has a divider downstream end that is upstream of the integration duct downstream end. At each divider downstream end, adjacent flow paths merge into a merged flow path. The three or more flow paths gradually merge into a single flow path at the integration duct downstream end.

Description

[0001] Cross-citation of related applications

[0002] This application claims the benefit of U.S. Patent Application No. 18 / 896,221, filed September 25, 2024, and U.S. Patent Application No. 18 / 896,322, filed September 25, 2024. The entire contents of U.S. Patent Application No. 18 / 896,221 and U.S. Patent Application No. 18 / 896,322 are incorporated herein by reference in their entirety. Technical Field

[0003] This application generally relates to the field of wind turbines, and more specifically, to wind turbine systems for power generation. Background Technology

[0004] Energy production is a significant contributor to global greenhouse gas emissions. Wind power is considered a sustainable renewable energy source with a much smaller environmental impact compared to burning fossil fuels. Wind turbines can help reduce global greenhouse gas emissions by generating electricity from wind. The efficiency of a wind turbine refers to its effectiveness in converting the kinetic energy of wind into mechanical energy that can then be extracted by a generator. Improvements in wind turbine efficiency can generate more electricity and / or reduce the cost per unit of electricity produced. This can lead to greater reductions in global greenhouse gas emissions. Summary of the Invention

[0005] The following detailed description is intended to guide the reader without limiting or restricting the subject matter for which protection is sought.

[0006] In one aspect, a wind turbine system is disclosed. The wind turbine system includes a flow integration duct and an air-driven rotor assembly. The flow integration duct is closed and extends from an upstream end to a downstream end. The flow integration duct includes an airflow capture inlet at the upstream end and a plurality of flow dividers that subdivide the cross-sectional area of ​​the flow integration duct into three or more flow paths. Each flow divider and each flow path extends between the upstream and downstream ends of the flow integration duct. Each flow divider has a downstream end located upstream of the downstream end of the flow integration duct. At the downstream end of each divider, adjacent flow paths merge into a merged flow path. The three or more flow paths gradually merge into a single flow path at the downstream end of the flow integration duct. Each flow divider has a divider length, and the divider length of each flow divider differs from the divider length of at least one other flow divider. The cross-sectional area of ​​the flow integration duct decreases towards the downstream end of the flow integration duct between the upstream and downstream ends. The air-driven rotor assembly has an upstream end located downstream of the downstream end of the flow integration duct. The air-driven rotor assembly includes an air-driven rotor.

[0007] In another aspect, a wind turbine system is disclosed. The wind turbine system includes a flow integration duct and an air-driven rotor assembly. The flow integration duct is closed and extends from an upstream end to a downstream end. The flow integration duct has a duct length. The flow integration duct includes an airflow capture inlet at the upstream end and a plurality of flow dividers that subdivide the cross-sectional area of ​​the flow integration duct into three or more flow paths. Each flow divider and each flow path extends between the upstream and downstream ends of the integration duct. Each flow divider has a downstream end located upstream of the downstream end of the integration duct. At the downstream end of each divider, adjacent flow paths merge into a merged flow path. The three or more flow paths gradually merge into a single flow path at the downstream end of the integration duct. The downstream end of each divider has a duct length location different from the downstream end of at least one other divider. The cross-sectional area of ​​the flow integration duct decreases towards the downstream end of the integration duct between the upstream and downstream ends. The air-driven rotor assembly has an upstream end located downstream of the downstream end of the integration duct. The air-driven rotor assembly includes an air-driven rotor.

[0008] In another aspect, a wind turbine system is disclosed. The wind turbine system includes a flow integration duct and an air-driven rotor assembly. The flow integration duct is closed and has an integration duct length extending from an upstream end to a downstream end. The flow integration duct includes an airflow capture inlet at the upstream end and a plurality of flow dividers that subdivide the cross-sectional area of ​​the flow integration duct into three or more flow paths. Each flow divider and each flow path extends between the upstream and downstream ends of the integration duct. Each flow divider has a downstream end located upstream of the downstream end of the integration duct. At the downstream end of each divider, adjacent flow paths merge into a merged flow path. The three or more flow paths gradually merge into a single flow path at the downstream end of the integration duct. The number of flow dividers gradually decreases towards the downstream end of the integration duct along its length. The cross-sectional area of ​​the flow integration duct decreases towards the downstream end of the integration duct between the upstream and downstream ends. The air-driven rotor assembly has an upstream end located downstream of the downstream end of the integration duct. The air-driven rotor assembly includes an air-driven rotor.

[0009] In another aspect, a method for generating energy in a wind turbine system is disclosed. The method includes: capturing wind as an airflow inlet of the wind turbine system; and guiding the airflow through a flow integration duct of the wind turbine system. The flow integration duct has a cross-sectional area that decreases towards its downstream end. The method further includes using multiple flow dividers to separate the airflow, which subdivide the cross-sectional area of ​​the flow integration duct into three or more flow paths. The three or more flow paths gradually merge into a single flow path, causing the airflow to exit the flow integration duct as a unified airflow. The method further includes: guiding the unified airflow through an air-driven rotor assembly driving a generator; and generating energy at the generator.

[0010] In another aspect, a wind turbine system is disclosed. The wind turbine system includes a flow integration duct and an air-driven rotor assembly. The flow integration duct extends from an airflow capture inlet to a downstream end of the integration duct. The air-driven rotor assembly has an upstream end located downstream of the downstream end of the integration duct. The air-driven rotor assembly includes a rotor housing, a rotor within the rotor housing, and an annular pre-rotor flow recirculation channel defined between the rotor housing and the rotor. The rotor has a plurality of air-driven blades distributed around the rotor's axis of rotation. The rotor has a radially inward inlet direction. The recirculation channel surrounds the rotor. The recirculation channel extends from its upstream end to its downstream end. The downstream end of the recirculation channel is open and provides fluid continuity from the downstream end to the upstream end. The recirculation channel has a channel cross-sectional area that gradually decreases from its upstream end to its downstream end.

[0011] In another aspect, a method for generating energy in a wind turbine system is disclosed. The method includes: capturing wind as an airflow inlet of the wind turbine system; and guiding the airflow through a flow integration duct of the wind turbine system to provide integrated airflow to the air-driven rotor of the wind turbine system. The method further includes guiding the integrated airflow through an open and annular pre-rotor flow recirculation channel. The pre-rotor flow recirculation channel surrounds the rotor and guides the airflow radially inward toward the air-driven blades of the rotor. The pre-rotor flow recirculation channel has a channel cross-sectional area that gradually decreases from an upstream end to a downstream end of the recirculation channel. The method further includes: using the air-driven blades of the rotor to drive a generator; and generating energy at the generator.

[0012] Other aspects and features of the teachings disclosed herein will become apparent to those skilled in the art after reading the following description of specific examples of this disclosure. Attached Figure Description

[0013] The accompanying drawings are for illustrating various examples of the apparatus and methods of this disclosure and are not intended to limit the scope of the teachings in any way. In the drawings:

[0014] Figure 1 This is a front perspective view of a wind turbine system according to an exemplary embodiment;

[0015] Figure 2 for Figure 1 Rear perspective view of a wind turbine system;

[0016] Figure 3 For along Figure 1 A cross-sectional view taken from line 1'-1' in the diagram;

[0017] Figure 4 For along Figure 1 A cross-sectional view taken from line 2'-2' in the diagram;

[0018] Figure 5 For along Figure 1 A cross-sectional view taken from line 3'-3' in the diagram;

[0019] Figure 6 for Figure 1 A perspective view of the air handling subassembly of a wind turbine system;

[0020] Figure 7A for Figure 1 A perspective view of the air-driven blade section of the rotor of a wind turbine system;

[0021] Figure 7B for Figure 1 A perspective view of the air redirection section of the rotor of a wind turbine system;

[0022] Figure 8 In order to be in Figure 1 A flowchart of an exemplary method for generating energy in a wind turbine system; and

[0023] Figure 9 In order to be in Figure 1 A flowchart of another exemplary method for generating energy in a wind turbine system.

[0024] Other aspects and features of the exemplary embodiments described herein will be presented from the following description and the accompanying drawings. Detailed Implementation

[0025] Numerous embodiments are described herein and are presented for illustrative purposes only. The described embodiments are not intended to be limiting in any sense. The invention is broadly applicable to numerous specific instances, as will be apparent from the disclosure herein. Those skilled in the art will recognize that modifications and alterations can be made to practice the invention without departing from the teachings disclosed herein. Although specific features of the invention may be described with reference to one or more particular embodiments or drawings, it should be understood that such features are not limited to their use in the descriptions or drawings thereof.

[0026] Unless otherwise expressly specified, the terms “an embodiment,” “embodiment,” “embodiments,” “the embodiment,” “one or more embodiments,” “some embodiments,” and “an embodiment” mean “one or more (but not all) embodiments of the present invention.”

[0027] Unless otherwise expressly specified, the terms “including,” “comprising,” and variations thereof mean “including, but not limited to.” Unless otherwise expressly specified, a list of items does not imply that any or all of the items are mutually exclusive. Unless otherwise expressly specified, the terms “a,” “an,” and “the” refer to “one or more.”

[0028] As used herein and in the claims, two or more components are referred to as “coupled,” “connected,” “attached,” “joined,” “attached,” or “fastened,” wherein the components are engaged or operate together directly or indirectly (i.e., by providing one or more intermediate components), provided that a connection is made. As used herein and in the claims, two or more components are referred to as “directly coupled,” “directly connected,” “directly attached,” “directly joined,” “directly attached,” or “directly fastened,” wherein the components are connected in physical contact with each other. As used herein, two or more components are referred to as “rigidly coupled,” “rigidly connected,” “rigidly attached,” “rigidly joined,” “rigidly attached,” or “rigidly fastened,” wherein the components are coupled for integral movement while maintaining a constant orientation relative to each other. Each of the terms “coupled,” “connected,” “attached,” “joined,” “attached,” and “fastened” does not distinguish the manner in which the two or more components are joined together.

[0029] Furthermore, although the method steps may be described sequentially (within the scope of this disclosure and / or the claims), such methods can be configured to operate in an alternating order. In other words, any sequence or order of the steps that can be described does not necessarily indicate the need for the steps to be performed in that order. The steps of the method described herein can be performed in any actual order. Moreover, some steps may be performed simultaneously.

[0030] As used herein and in the claims, a group of components is referred to as “jointly” performing an action, wherein the action is performed by any one of the components in the group, or by two or more (or all) of the components in the group in a cooperative manner.

[0031] Some components in this document can be identified by part numbers, which consist of a radix followed by a letter or subscript number suffix (e.g., 112a or 1121). Multiple components in this document can be identified by part numbers that share a common radix but have different suffixes (e.g., 1121, 1122, and 1123). All components with a common radix can be referred to collectively or generally using a suffixless radix (e.g., 112).

[0032] As used herein, the term “and / or” is intended to indicate inclusion—or. That is, “X and / or Y” means, for example, X or Y or both. As another example, “X, Y and / or Z” means X or Y or Z or any combination thereof.

[0033] The inlet airflow of a wind turbine system can have considerable turbulence, which can cause the wind turbine system to operate less efficiently compared to a situation where the airflow has no turbulence or low turbulence. Specifically, if the airflow enters the rotor section of the wind turbine system with high turbulence, the rotor section will operate less efficiently (i.e., convert less wind energy into mechanical rotor rotation) compared to a situation where the airflow enters with low turbulence (i.e., higher flow coherence). Therefore, at least some embodiments disclosed herein are configured to reduce the turbulence of the inlet airflow in a portion of the wind turbine system upstream of the rotor section.

[0034] The embodiments of the wind turbine system described herein may implement one or more design aspects to reduce airflow turbulence (and increase flow coherence). For example, the disclosed wind turbine system may include a flow integration duct having a decreasing cross-sectional area from an upstream end to a downstream end where the rotor assembly is located. As another example, the flow integration duct may have flow dividers that subdivide the cross-sectional area of ​​the flow integration duct into multiple flow paths. Multiple flow paths may gradually merge into a single flow path at the downstream end of the flow integration duct. As another example, the overall airflow path toward the inlet to the rotor section may have a gradually increasing curvature to prepare the flow to rotate around the rotor while introducing minimal or no turbulence. The disclosed embodiments may use any of the above design aspects or a suitable combination thereof to improve wind turbine efficiency by reducing airflow turbulence.

[0035] Now for reference Figures 1 to 5 , Figure 1 and Figure 2 The front and rear perspective views of the wind turbine system 100 are shown respectively. Figure 3 and Figure 4 Showing along respectively Figure 1 The cross-sectional view of the wind turbine system 100 taken by lines 1'-1' and 2'-2'. Figure 5 Show along Figure 1 A cross-sectional view of the flow integration duct of the wind turbine system 100, taken from line 3'-3'.

[0036] The wind turbine system 100 can be installed at any suitable location where wind energy can be captured. In the illustrated example, the wind turbine system 100 can be installed on the roof 106 of building 104. Building 104 can be an industrial building (e.g., a factory or warehouse), a commercial building (e.g., a retail store or office building), or a residential building (e.g., a dormitory building, apartment building, house, or garage).

[0037] The wind turbine system 100 may include one or more (or all) of the following: a flow integration duct 108, an air-driven rotor assembly 116, one or more outlet ducts 136, a generator 140, and a wind turbine housing 120. For example, in some embodiments, the wind turbine system may include the flow integration duct 108, the air-driven rotor assembly 116, the outlet duct 136, and the wind turbine housing 120, but the generator 140 may be omitted.

[0038] The flow conduit 108 may extend from the upstream end 144 to the downstream end 148 of the conduit. The flow conduit 108 may have a conduit length 168 that extends along the airflow direction from the upstream end 144 to the downstream end 148 of the conduit.

[0039] The flow integration duct 108 can have any design suitable for efficiently capturing the incident air and shaping the captured incident air into an integrated airflow directed toward the air-driven rotor assembly 116. For example, the flow integration duct 108 can be a closed duct, with its upper portion enclosed by a duct top plate 160, its lower portion enclosed by a duct bottom plate 164, and its side portions enclosed by duct sidewalls 152 and 156. The closed nature of the flow integration duct 108 allows it to integrate the airflow moving toward the rotor assembly, thereby providing a more stratified airflow (i.e., reduced turbulence and increased flow coherence).

[0040] The flow conduit 108 may have any cross-sectional area 172 suitable for supporting airflow from the upstream end 144 to the downstream end 148 of the flow conduit. The cross-sectional area 172 of the flow conduit 108 is the region of the flow conduit 108 along a cross-sectional plane extending perpendicular to the downstream flow direction. The cross-sectional area 172 may decrease towards the downstream end 148 between the upstream end 144 and the downstream end 148. For example, in the illustrated embodiment, the separation distance between the conduit sidewalls 152 and 156 decreases towards the downstream end 148 between the upstream end 144 and the downstream end 148. In some exemplary embodiments, the cross-sectional area 172 is reduced by at least 30%, such as 30% to 90%. A larger reduction in the cross-sectional area 172, such as 70% to 90%, can result in a higher airflow velocity at the downstream end 148 of the flow conduit. In alternative embodiments, the cross-sectional area 172 is reduced by less than 30% (e.g., 10% to 25%) or not reduced at all.

[0041] Cross-sectional area 172 can be reduced in any way to accelerate the flow exiting from the downstream end 148 of the integrated duct. For example, cross-sectional area 172 can be reduced across the entire length 168 of the integrated duct or only a portion of the length 168, and can be reduced continuously or gradually. In the illustrated example, cross-sectional area 172 is reduced continuously across the entire length 168 of the integrated duct. This can mitigate the introduction of additional turbulence into the airflow by allowing for a gradual reduction in cross-sectional area 172.

[0042] The integrated flow duct 108 may include an airflow capture inlet 112 and a plurality of flow dividers 132. Any suitable-sized opening at the upstream end 144 of the integrated duct may define the airflow capture inlet 112. For example, the airflow capture inlet 112, measured between the sidewalls 152 and 156 of the integrated duct, may be at least 100 cm wide (e.g., 100 cm to 300 cm wide). In some embodiments, the airflow capture inlet 112 may be larger (e.g., 300 cm to 500 cm wide). A larger airflow capture inlet 112 may enable the extraction of a greater amount of wind energy to provide higher power generation capacity. In some embodiments, the airflow capture inlet 112 may be smaller (e.g., 20 cm to 100 cm wide). A smaller airflow capture inlet 112 may provide a more compact design and a smaller footprint for the wind turbine system 100. The airflow capture inlet 112 captures the incident wind and directs the captured wind into the integrated flow duct 108.

[0043] The flow integration duct 108 may include any number of flow dividers 132 suitable for efficiently reducing airflow turbulence (e.g., increasing flow coherence) before the airflow reaches the air-driven rotor assembly 116. For example, the flow integration duct 108 may have at least one flow divider, such as 1 to 20 flow dividers 132, or at least two flow dividers, such as 2 to 20 flow dividers 132. In the illustrated example, the flow integration duct 108 is shown having five flow dividers 132a to 132e. A higher number of flow dividers 132 (e.g., at least 10 flow dividers, such as 10 to 20 flow dividers) allows the flow integration duct 108 to reduce turbulence (e.g., increase flow coherence) to a greater extent, and also generates more resistance to the airflow due to the relatively higher combined surface area of ​​the flow dividers. A lower number of flow dividers 132 (e.g., at least two flow dividers, such as two to ten flow dividers) can result in a slightly smaller effect on turbulence reduction and also contribute to less airflow resistance due to the relatively low combined surface area of ​​the flow dividers.

[0044] Flow divider 132 can separate the airflow captured at airflow capture inlet 112 into airflows with smaller cross-sectional areas. Flow divider 132 can have any design suitable for efficiently dividing airflow. For example, flow divider 132 can extend between the upstream end 144 and the downstream end 148 of the integrated duct, and extend from the top plate 160 to the bottom plate 164 of the duct, subdividing the cross-sectional area 172 of the integrated duct 108 into two or more flow paths 128. For example, Figure 4A flow divider 132a is shown that divides the incoming airflow into adjacent flow paths 128a and 128b. Each flow path 128 may extend between an upstream end 144 and a downstream end 148 of the integrated duct, and the extent of each flow path 128 is based on one or more flow dividers 132 that define the flow path 128.

[0045] Each flow separator 132 may have a curved separator length 184 extending along the airflow direction between the upstream end 176 and the downstream end 180 of the separator. The downstream end 180 of each flow separator 132 may be located downstream of the upstream end 144 and upstream of the downstream end 148 of the integrated duct.

[0046] At the downstream end 180 of each separator, the adjacent flow paths 128 separated by that downstream end 180 end terminate and can be merged into a merged flow path 132. For example, Figure 4 The adjacent flow paths 128a and 128b shown merge into a merged flow path 128c at the downstream end 180a of the separator.

[0047] Flow separators 132 may or may not all have the same separator length 184. In some embodiments, the separator length 184 of each flow separator 132 may be different from the separator length 184 of at least one other flow separator. In some embodiments, each flow separator 132 has a separator length 184 different from each of the other flow separators 132. In the illustrated example, the separator length 184a of flow separator 132a is different from the separator length 184 of each of the other flow separators 132b to 132e. In some embodiments, the separator length 184 of flow separator 132 may be less than 90% or greater than 110% of the separator length 184 of at least one other flow separator 132, for example, 50% to 90% or 110% to 150% of the separator length 184 of at least one other flow separator 132.

[0048] Flow dividers 132 may be positioned in different ways, along or not along the pipe length 168. In some embodiments, the downstream end 180 of each flow divider 132 may have a pipe length position 192 different from the downstream end 180 of at least one other flow divider 132. The pipe length position 192 may be defined as a position along the integrated pipe length 168 in the airflow direction. In the illustrated exemplary embodiment, as Figure 4As shown, the downstream end 180a of flow separator 132a has a pipe length position 192a that is different from the pipe length position 192b of the downstream end 180b of flow separator 132b. In the illustrated example, the downstream end 180a of flow separator 132a has a pipe length position 192a that is different from the pipe length positions of the downstream ends of all other flow separators 132.

[0049] In some embodiments, the upstream end 176 of each flow separator 132 may be recessed from the airflow capture inlet 112. In the illustrated example, the upstream end 176b of the flow separator 132b is recessed from the airflow capture inlet 112 by a recess length 196. One or more of the duct top plate 160, duct bottom plate 164, and / or duct sidewalls 152 and 156 may have curved surface portions corresponding to the recess length 196 to reduce turbulence of the airflow entering at the airflow capture inlet 112. In alternative embodiments, the upstream end 176 of each flow separator 132 may be positioned at an airflow capture inlet 112 without any recess length.

[0050] A sudden decrease in the number of flow dividers 132 along the length 168 of the integrated duct can create turbulence because airflows from multiple flow paths merge at the same location. In some embodiments, the number of flow dividers 132 may gradually decrease along the length 168 of the integrated duct towards the downstream end 148. This allows multiple flow paths to gradually merge into a single flow path 128d at the downstream end 148 of the integrated duct, thereby reducing turbulence. In the illustrated exemplary embodiment, the number of flow dividers 132 decreases numerically from 5 at the upstream end 144 of the integrated duct to 4 at duct length position 192a, to 3 at duct length position 192c, to 2 at duct length position 192b, to 1 at duct length position 192e, and to 0 at duct length position 192d. The corresponding number of flow paths at any location is one more than the number of flow dividers 132 at that location. In the example shown, the number of flow paths 128 gradually decreases from 6 at the upstream end 144 of the integrated pipeline to a single flow path 128d at the downstream end 148 of the integrated pipeline.

[0051] The air-driven rotor assembly 116 can have any design suitable for driving a rotor having an airflow received from the integrated flow conduit 108. The air-driven rotor assembly 116 can have an upstream end 212 of the rotor assembly, which is in fluid communication with the integrated flow conduit 108 and located downstream of the downstream end 148 of the integrated flow conduit. This allows the integrated airflow from the integrated flow conduit 108 to flow into the air-driven rotor assembly 116 at the upstream end 248 of the rotor assembly.

[0052] The air-driven rotor assembly 116 may include a rotor housing 208, an annular pre-rotor flow recirculation channel 216, and a rotor 204. Except... Figures 1 to 5 In addition, we are now also referring to Figure 6 , Figure 7A and Figure 7B . Figure 6 This is a perspective view of the air handling subassembly 102 of the wind turbine system 100. The air handling subassembly 102 may include a flow integration duct 108, an air-driven rotor assembly 116, and an outlet duct 136. Figure 7A A perspective view of the air-driven blade portion 268 of rotor 204. Figure 7B A perspective view of the air redirection section 272 of rotor 204.

[0053] The rotor housing 208 can have any design suitable for enclosing the rotor 204 and defining the pre-rotor flow recirculation channel 216. As shown, the rotor 204 has a rotation axis 220. The rotor 204 can extend parallel to the rotation axis 220 from a first rotor end 224 to a second rotor end 228. In some examples, the rotor housing 208 can define an annular pre-rotor flow recirculation channel 216, wherein the annular pre-rotor recirculation channel 216 is demarcated between the rotor housing 208 and the rotor 204. Figure 4 As shown, the annular pre-rotor flow recirculation channel 216 may surround the rotor 204. For example, the rotor housing 208 may extend substantially parallel to the axis of rotation 220, as shown.

[0054] The pre-rotor flow recirculation channel 216 can extend from the upstream end 232 of the recirculation channel to the downstream end 236 of the recirculation channel. The upstream end 232 of the recirculation channel can be located at the upstream end 248 of the rotor assembly to receive integrated airflow from the flow integration duct 108.

[0055] The pre-rotor flow recirculation channel 216 may have a channel cross-sectional area that gradually decreases from the upstream end 232 to the downstream end 236 of the recirculation channel. The cross-sectional area may be defined as a region of the pre-rotor flow recirculation channel 216 extending along a cross-sectional plane 240 perpendicular to the airflow extending through the pre-rotor flow recirculation channel 216. The cross-sectional area may gradually decrease as the width of the pre-rotor flow recirculation channel 216 gradually decreases from the upstream end 232 to the downstream end 236. The cross-sectional area may decrease along the entire length of the pre-rotor flow recirculation channel 216 or only a portion thereof, and may decrease continuously or gradually. In the illustrated example, the cross-sectional area decreases continuously from the upstream end 232 to the downstream end 236 of the recirculation channel. This allows the airflow from the pre-rotor flow recirculation channel 216 to gradually enter the rotor 204 in a radially inward direction, while mitigating the increase in flow turbulence.

[0056] In some embodiments, the pre-rotor flow recirculation channel 216 may be open and provide fluid continuity from the downstream end 236 of the circulation channel to the upstream end 232 of the recirculation channel. This allows any residual airflow within the pre-rotor flow recirculation channel 216 (which does not enter the rotor 204) to flow from the upstream end 232 of the recirculation channel to the downstream end 236 of the recirculation channel, and to re-enter the pre-rotor flow recirculation channel 216 at the junction of the downstream end 236 and the upstream end 232. This can improve the efficiency of the wind turbine system 100 by utilizing the residual airflow within the pre-rotor flow recirculation channel 216 to drive the rotor 204, rather than being discharged at the downstream end 236 of the recirculation channel or suddenly forced into the rotor 204 (which could generate back pressure and turbulence).

[0057] Rotor 204 can have any design suitable for being driven by airflow entering from pre-rotor flow recirculation channel 216. For example, the air-driven blade portion 268 of rotor 204 may include a plurality of air-driven blades 244. In the illustrated exemplary embodiment, each air-driven blade 244 extends in a direction parallel to the axis of rotation 220 and is positioned around the periphery of rotor 204. Air-driven blades 244 may be shaped to interact with the incoming airflow to drive rotor 204 to rotate about axis of rotation 220. Each air-driven blade 244 may have curvature providing a radially inward discharge direction 248. That is, the airflow interacting with each air-driven blade 244 may discharge radially inward (i.e., generally toward axis of rotation 220). In an alternative embodiment, air-driven blades 244 are not positioned around the periphery of rotor 204.

[0058] In some embodiments, rotor 204 may include an air redirection section 272 adapted to redirect airflow. Figure 7B For example, the air redirection portion 272 of rotor 204 may include one or more air redirection blades 252. In the illustrated exemplary embodiment, the air redirection blades 252 are located radially inside the air drive blades 244. That is, as shown, the air redirection blades 252 are positioned closer to the axis of rotation 220 than the air drive blades 244. The air redirection blades 252 may have an axial discharge direction 256. In the illustrated example, the axial discharge direction 256 is substantially parallel to the axis of rotation 220. The term "substantially parallel" as used herein may mean, for example, within 30 degrees of parallelism. Thus, the air redirection blades 252 may redirect airflow to exit from rotor 204 through flow discharge windows at rotor ends 224 and 228. The flow discharge windows may be fluidly connected to one or more outlet ducts to allow airflow to exit from the wind turbine system 100.

[0059] The air redirection blade 252 can have any design suitable for axially redirecting airflow. For example, the air redirection blade 252 can have a herringbone shape, as shown. In the illustrated example, the air redirection blade 252 may include a first portion 260a and a second portion 260b forming the herringbone shape. As shown, the first portion 260a may be at an angle 264 relative to the second portion 260b. In some embodiments, the angle 264 may be at least 25 degrees with respect to the axial discharge direction 256, such as 25 to 30 degrees. In alternative embodiments, the air redirection blade 252 does not have a herringbone shape. Alternative embodiments may not have the air redirection blade 252.

[0060] The wind turbine system 100 may have any configuration suitable for exhausting airflow downstream of the rotor assembly 116. In the illustrated embodiment, the wind turbine system 100 includes two outlet ducts 136a and 136b. Figure 2 and Figure 3 The airflow can be discharged from the wind turbine system 100 through the outlet pipe.

[0061] The wind turbine system 100 can have any components suitable for air-driven initiation of power generation from the rotor 204. In the illustrated exemplary embodiment, the wind turbine system 100 may include a generator 140 mechanically connected to the rotor 204 by a shaft 142. The generator 140 can generate electrical energy from the rotational force (torque) of the rotor 204. Any suitable generator can be used. In some embodiments, the generator 140 may include an axial flux generator. In alternative embodiments, other generator designs may be used. In some embodiments, the generator 140 may have a generating capacity of at least 10 kW. For example, the generator 140 may have a generating capacity of 10 kW to 1,000 kW. In some embodiments, the wind turbine system 100 may be designed for a smaller footprint, and the generator 140 may have a smaller generating capacity (e.g., 1 kW to 10 kW).

[0062] In some embodiments, the wind turbine system 100 may include any suitable energy storage component (e.g., one or more batteries) for storing the energy generated by the generator 140. In other embodiments, the wind turbine system 100 may not include any energy storage component. For example, the output of the generator 140 may be connected to the power grid for distributing the energy generated by the generator 140.

[0063] The wind turbine housing 120 can have any design suitable for housing other components of the wind turbine system 100, such as flow integration ducts, air-driven rotor assembly 116, outlet duct 136, and generator 140. The wind turbine housing 120 can be made of any rigid material that provides sufficient structural strength and integrity to support the other components of the wind turbine system 100. The wind turbine system 100 can be installed in an outdoor environment. The materials used to manufacture the wind turbine housing 120 can be weather-resistant and able to withstand outdoor environments. In some embodiments, the wind turbine housing 120 can be made of metallic materials such as steel, aluminum, or sheet metal, which can be bare, galvanized, coated, and / or painted. In other embodiments, the wind turbine housing 120 can be made of non-metallic materials such as plastics (e.g., resins).

[0064] In some embodiments, a portion 124 of the outer surface of the wind turbine housing 120 may be a recessed surface. A recessed surface can reduce the drag between the incident wind and the wind turbine housing 120. Reduced drag can improve the efficiency of the wind turbine system 100. For example... Figure 1As shown, a portion 124 may include a plurality of pits 126 (e.g., at least 100 pits, such as 100 to 1,000,000 pits), which may be randomly positioned or configured in a geometric pattern as shown. Sampling of the pits 126 has been performed. Figure 2 The Chinese characters are marked as 126a to 126e.

[0065] Now for reference Figure 8 The flowchart illustrates an exemplary method 300 for generating energy in a wind turbine system. The wind turbine system can be, for example, wind turbine system 100, and also refers to... Figure 1 See Figure 7.

[0066] At action 304, method 300 may include capturing wind as airflow in the airflow capture inlet of the wind turbine system. For example, the incident wind may be captured in the airflow capture inlet 112 of the wind turbine system 100 in any manner suitable for guiding the captured airflow downstream.

[0067] At action 308, method 300 may include guiding the captured airflow through a flow integration duct of the wind turbine system. For example, the captured airflow may be guided through flow integration duct 108. As described herein, flow integration duct 108 may have a cross-sectional area 172 that decreases toward its downstream end.

[0068] At action 312, method 300 may include using multiple flow dividers to separate the airflow, which subdivide the cross-sectional area of ​​the flow integration duct into three or more flow paths. For example, the flow integration duct 108 may have multiple flow dividers 132a to 132n that subdivide the cross-sectional area 172 of the flow integration duct 108 into three or more flow paths 128. The flow paths 128 may gradually merge into a single flow path, such that the airflow exits the flow integration duct 108 as a unified airflow.

[0069] At action 316, method 300 may include directing integrated airflow through an air-driven rotor assembly driving a generator. For example, the integrated airflow may be directed through an air-driven rotor assembly 116. The air-driven rotor assembly 116 may include a plurality of air-driven blades driving a generator 140.

[0070] At action 320, method 300 may include generating energy at a generator. The generated energy may be stored and / or supplied to the power grid.

[0071] Now for reference Figure 9 The flowchart illustrates an exemplary method 400 for generating energy in a wind turbine system. The wind turbine system can be, for example, wind turbine system 100, and also refers to... Figure 1 See Figure 7.

[0072] At action 404, method 400 may include capturing wind as airflow in an airflow capture inlet of a wind turbine system. For example, the incident wind may be captured in any manner suitable for guiding the captured airflow downstream in an airflow capture inlet 112 of the wind turbine system 100.

[0073] At action 408, method 400 may include directing the captured airflow through a flow integration duct of the wind turbine system. For example, the captured airflow may be directed through flow integration duct 108. Flow integration duct 108 may provide integrated airflow to the air-driven rotor 204 of the wind turbine system 100.

[0074] At action 412, method 400 may include guiding the integrated airflow through an open and annular pre-rotor flow recirculation channel. For example, the integrated airflow may be guided through a pre-rotor flow recirculation channel 216. As described herein, the pre-rotor flow recirculation channel 216 may guide the airflow radially inward around the rotor 204 and toward the air-driven blades 244 of the rotor 204. The pre-rotor flow recirculation channel 216 may have a channel cross-sectional area that gradually decreases from an upstream end 232 of the recirculation channel to a downstream end 236 of the recirculation channel.

[0075] At action 416, method 400 may include using air-driven blades of a rotor to drive a generator. For example, air-driven blades 244 of rotor 204 may drive generator 140.

[0076] At action 420, method 400 may include generating energy at a generator. The generated energy may be stored and / or supplied to the power grid.

[0077] While the foregoing description provides examples of embodiments, it should be understood that some features and / or functions of the described embodiments can be easily modified without departing from the spirit and operating principles. Therefore, the foregoing description is intended to illustrate the invention and not to limit it, and those skilled in the art will understand that other variations and modifications can be made without departing from the scope of the invention as defined in the appended claims. The scope of the claims should not be limited to the preferred embodiments and examples, but should be given the broadest interpretation consistent with the entire description.

[0078] project

[0079] Project 1: A wind turbine system comprising: a flow integration duct, which is closed and extends from an upstream end to a downstream end of the integration duct, the flow integration duct including: an airflow capture inlet at the upstream end of the integration duct; and a plurality of flow dividers that subdivide a cross-sectional area of ​​the flow integration duct into three or more flow paths, each flow divider and each flow path extending between the upstream end and the downstream end of the integration duct, each flow divider having a divider downstream end located upstream of the downstream end of the integration duct, adjacent flow paths merging into a merged flow path at each divider downstream end, the three or more flow paths gradually merging into a single flow path at the downstream end of the integration duct, each flow divider having a divider length different from the divider length of at least one other flow divider; the cross-sectional area of ​​the flow integration duct decreasing towards the downstream end of the integration duct between the upstream end and the downstream end of the integration duct; and an air-driven rotor assembly having an upstream end of the rotor assembly located downstream of the downstream end of the integration duct, the air-driven rotor assembly including an air-driven rotor.

[0080] Project 2: A wind turbine system as described in any of the preceding projects, wherein each flow separator further includes an upstream end of the separator located downstream of the airflow capture inlet.

[0081] Project 3: A wind turbine system as described in any of the preceding projects, further comprising a generator connected in a drive manner to the air-driven rotor.

[0082] Project 4: A wind turbine system as described in any of the preceding projects, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

[0083] Project 5: A wind turbine system as described in any of the preceding projects, wherein at least a portion of the outer surface of the wind turbine housing is a pitted surface.

[0084] Project 6: A building that includes a wind turbine system as described in any of the preceding projects.

[0085] Project 7: A wind turbine system comprising: a flow integration duct, which is closed and extends from an upstream end to a downstream end of the integration duct, the flow integration duct having a duct length and including: an airflow capture inlet at the upstream end of the integration duct; and a plurality of flow dividers that subdivide a cross-sectional area of ​​the flow integration duct into three or more flow paths, each flow divider and each flow path extending between the upstream end and the downstream end of the integration duct, each flow divider having a divider downstream end located upstream of the downstream end of the integration duct, at each divider downstream end, adjacent flow paths merging into a merged flow path, the three or more flow paths gradually merging into a single flow path at the downstream end of the integration duct, each divider downstream end having a duct length position different from the downstream end of at least one other divider; the cross-sectional area of ​​the flow integration duct decreasing towards the downstream end of the integration duct between the upstream end and the downstream end of the integration duct; and an air-driven rotor assembly having a rotor assembly upstream end located downstream of the downstream end of the integration duct, the air-driven rotor assembly including an air-driven rotor.

[0086] Project 8: A wind turbine system as described in any of the preceding projects, wherein each flow separator further includes an upstream end of the separator located downstream of the airflow capture inlet.

[0087] Item 9: A wind turbine system as described in any of the preceding items, further comprising a generator connected in a driving manner to the air-driven rotor.

[0088] Item 10: A wind turbine system as described in any of the preceding items, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

[0089] Item 11: A wind turbine system as described in any of the preceding items, wherein at least a portion of the outer surface of the wind turbine housing is a pitted surface.

[0090] Item 12: A building that includes a wind turbine system as described in any of the preceding items.

[0091] Project 13: A wind turbine system comprising: a flow integration duct, which is closed and has an integration duct length extending from an upstream end to a downstream end of the integration duct, the flow integration duct including: an airflow capture inlet at the upstream end of the integration duct; and a plurality of flow dividers that subdivide a cross-sectional area of ​​the flow integration duct into three or more flow paths, each flow divider and each flow path extending between the upstream end and the downstream end of the integration duct, each flow divider having a divider downstream end located upstream of the downstream end of the integration duct, at each divider downstream end, adjacent flow paths merging into a merged flow path, the three or more flow paths gradually merging into a single flow path along the length of the integration duct at the downstream end of the integration duct, the number of flow dividers gradually decreasing towards the downstream end of the integration duct; the cross-sectional area of ​​the flow integration duct decreasing towards the downstream end of the integration duct between the upstream end and the downstream end of the integration duct; and an air-driven rotor assembly having a rotor assembly upstream end located downstream of the downstream end of the integration duct, the air-driven rotor assembly including an air-driven rotor.

[0092] Item 14: A wind turbine system as described in any of the preceding items, wherein each flow separator further includes an upstream end of the separator located downstream of the airflow capture inlet.

[0093] Item 15: A wind turbine system as described in any of the preceding items, further comprising a generator connected in a drive manner to the air-driven rotor.

[0094] Item 16: A wind turbine system as described in any of the preceding items, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

[0095] Item 17: A wind turbine system as described in any of the preceding items, wherein at least a portion of the outer surface of the wind turbine housing is a pitted surface.

[0096] Item 18: A building that includes a wind turbine system as described in any of the preceding items.

[0097] Project 19: A method for outputting energy in a wind turbine system, the method comprising: capturing wind as an airflow in an airflow capture inlet of the wind turbine system; guiding the airflow through a flow integration duct of the wind turbine system, the flow integration duct having a cross-sectional area decreasing toward a downstream end of the flow integration duct; using a plurality of flow dividers to separate the airflow, the plurality of flow dividers subdividing the cross-sectional area of ​​the flow integration duct into three or more flow paths, the three or more flow paths gradually merging into a single flow path such that the airflow exits the flow integration duct as an integrated airflow; guiding the integrated airflow through an air-driven rotor assembly driving a generator; and generating the energy at the generator.

[0098] Project 20: The method of any of the preceding projects, wherein the number of flow dividers gradually decreases toward the downstream end of the integrated pipeline along its length.

[0099] Item 21: A wind turbine system comprising: a flow integration duct extending from an airflow capture inlet to a downstream end of the integration duct; and an air-driven rotor assembly having an upstream end of the rotor assembly located downstream of the downstream end of the integration duct, the air-driven rotor assembly comprising: a rotor housing; a rotor within the rotor housing having a plurality of air-driven blades distributed around a rotor rotation axis, the rotor having a radially inward entry direction; and an annular pre-rotor flow recirculation channel defined between the rotor housing and the rotor, the recirculation channel surrounding the rotor, the recirculation channel extending from an upstream end to a downstream end, the downstream end of the recirculation channel being open and providing fluid continuity from the downstream end to the upstream end, the recirculation channel having a channel cross-sectional area that gradually decreases from the upstream end to the downstream end.

[0100] Item 22: A wind turbine system as described in any of the preceding items, wherein the plurality of air-driven blades have a radially inward discharge direction.

[0101] Item 23: A wind turbine system as described in any of the preceding items, wherein the rotor further has a plurality of air redirection blades located radially inside the air-driven blade.

[0102] Item 24: A wind turbine system as described in any of the preceding items, wherein the air redirection blade has an axial discharge direction substantially parallel to the axis of rotation.

[0103] Item 25: A wind turbine system as described in any of the preceding items, wherein the air redirection blade has a herringbone shape.

[0104] Project 26: A wind turbine system as described in any of the preceding projects, wherein the cross-sectional area of ​​the channel decreases continuously from the upstream end of the recirculation channel to the downstream end of the recirculation channel.

[0105] Project 27: A wind turbine system as described in any of the preceding projects, wherein multiple flow separators subdivide the cross-sectional area of ​​the integrated flow duct into three or more flow paths, which gradually merge into a single flow path at the downstream end of the integrated duct.

[0106] Item 28: A wind turbine system as described in any of the preceding items, further comprising a generator connected to the air-driven rotor.

[0107] Item 29: A wind turbine system as described in any of the preceding items, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

[0108] Item 30: A wind turbine system as described in any of the preceding items, wherein at least a portion of the outer surface of the wind turbine housing is a pitted surface.

[0109] Item 31: A wind turbine system as described in any of the preceding items, further comprising an outlet duct fluidly connected to the rotor to discharge airflow from the rotor to outside the wind turbine system.

[0110] Item 32: A building comprising a wind turbine system as described in any of the foregoing items.

[0111] Project 33: A method for generating energy in a wind turbine system, the method comprising: capturing wind as an airflow in an airflow capture inlet of the wind turbine system; directing the airflow through a flow integration duct of the wind turbine system to provide integrated airflow to an air-driven rotor of the wind turbine system; directing the integrated airflow through an open and annular pre-rotor flow recirculation channel surrounding the rotor and radially inwardly guiding the airflow toward the air-driven blades of the rotor, the pre-rotor flow recirculation channel having a channel cross-sectional area that gradually decreases from an upstream end to a downstream end of the recirculation channel; using the air-driven blades of the rotor to drive a generator; and generating the energy at the generator.

[0112] Project 34: The method of any of the preceding projects, wherein guiding the airflow through the flow integration duct of the wind turbine system includes using a plurality of flow dividers to separate the airflow, the plurality of flow dividers subdividing the cross-sectional area of ​​the flow integration duct into three or more flow paths, the three or more flow paths gradually merging into a single flow path, such that the airflow exits the flow integration duct as the integrated airflow.

[0113] Item 35: The method of any of the preceding items, wherein the plurality of air-driven blades have a radially inward discharge direction.

[0114] Item 36: The method of any of the preceding items further includes discharging airflow from the rotor in an axial discharge direction substantially parallel to the axis of rotation of the rotor.

[0115] Item 37: The method of any of the preceding items, wherein the rotor has a plurality of air redirection blades located radially inside the air drive blades to discharge the airflow from the rotor.

[0116] Item 38: The method of any of the preceding items, wherein the air redirection blade has a herringbone shape.

[0117] Project 39: The method of any of the preceding projects, wherein the cross-sectional area of ​​the channel decreases continuously from the upstream end of the recirculation channel to the downstream end of the recirculation channel.

Claims

1. A wind turbine system comprising: A closed-loop integrated pipeline extending from its upstream end to its downstream end, comprising: The airflow capture inlet is located at the upstream end of the integrated duct; and Multiple flow dividers subdivide the cross-sectional area of ​​the integrated flow channel into three or more flow paths. Each flow separator and each flow path extends between the upstream and downstream ends of the integrated conduit. Each flow separator has a downstream end of the separator located upstream of the downstream end of the integrated conduit. At the downstream end of each separator, adjacent flow paths merge into a single flow path, and these three or more flow paths gradually merge into a single flow path at the downstream end of the integrated pipe. Each flow separator has a separator length, and the separator length of each flow separator is different from the separator length of at least one other flow separator; The cross-sectional area of ​​the integrated flow conduit decreases towards the downstream end of the integrated conduit between its upstream and downstream ends; and An air-driven rotor assembly having an upstream end of a rotor assembly located downstream of the integrated conduit, the air-driven rotor assembly including an air-driven rotor.

2. The wind turbine system according to claim 1, wherein, Each flow separator further includes an upstream end of the separator, which is located downstream of the airflow capture inlet.

3. The wind turbine system according to claim 1 or claim 2, further comprising a generator connected in a driving manner to the air-driven rotor.

4. The wind turbine system according to any one of claims 1 to 3, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

5. The wind turbine system according to claim 4, wherein, At least a portion of the outer surface of the wind turbine casing is a pitted surface.

6. A building comprising a wind turbine system according to any one of claims 1 to 5.

7. A wind turbine system comprising: A flow integration pipeline, which is closed and extends from the upstream end to the downstream end of an integration pipeline, has a pipeline length, and includes: The airflow capture inlet is located at the upstream end of the integrated duct; as well as Multiple flow dividers subdivide the cross-sectional area of ​​the integrated flow channel into three or more flow paths. Each flow separator and each flow path extends between the upstream and downstream ends of the integrated conduit. Each flow separator has a downstream end of the separator located upstream of the downstream end of the integrated conduit. At the downstream end of each separator, adjacent flow paths merge into a single flow path, and these three or more flow paths gradually merge into a single flow path at the downstream end of the integrated pipe. Each separator has a pipe length position at its downstream end that differs from the downstream end of at least one other separator; The cross-sectional area of ​​the integrated flow conduit decreases towards the downstream end of the integrated conduit between the upstream end and the downstream end of the integrated conduit. as well as An air-driven rotor assembly having an upstream end of a rotor assembly located downstream of the integrated conduit, the air-driven rotor assembly including an air-driven rotor.

8. The wind turbine system according to claim 7, wherein, Each flow separator further includes an upstream end of the separator, which is located downstream of the airflow capture inlet.

9. The wind turbine system according to claim 7 or claim 8, further comprising a generator connected in a driving manner to the air-driven rotor.

10. The wind turbine system according to any one of claims 7 to 9, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

11. The wind turbine system according to claim 10, wherein, At least a portion of the outer surface of the wind turbine casing is a pitted surface.

12. A building comprising a wind turbine system according to any one of claims 7 to 11.

13. A wind turbine system comprising: A flow-integrated conduit, which is closed and has a length extending from an upstream end to a downstream end, comprises: The airflow capture inlet is located at the upstream end of the integrated duct; and Multiple flow dividers subdivide the cross-sectional area of ​​the integrated flow channel into three or more flow paths. Each flow separator and each flow path extends between the upstream and downstream ends of the integrated conduit. Each flow separator has a downstream end of the separator located upstream of the downstream end of the integrated conduit. At the downstream end of each separator, adjacent flow paths merge into a single flow path, and these three or more flow paths gradually merge into a single flow path at the downstream end of the integrated pipe. Along the length of the integrated pipeline, the number of flow dividers gradually decreases towards the downstream end of the integrated pipeline; The cross-sectional area of ​​the integrated flow conduit decreases towards the downstream end of the integrated conduit between its upstream and downstream ends; and An air-driven rotor assembly having an upstream end of a rotor assembly located downstream of the integrated conduit, the air-driven rotor assembly including an air-driven rotor.

14. The wind turbine system according to claim 13, wherein, Each flow separator further includes an upstream end of the separator, which is located downstream of the airflow capture inlet.

15. The wind turbine system of claim 13 or claim 14, further comprising a generator connected in a driving manner to the air-driven rotor.

16. The wind turbine system according to any one of claims 13 to 15, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

17. The wind turbine system according to claim 16, wherein, At least a portion of the outer surface of the wind turbine casing is a pitted surface.

18. A building comprising a wind turbine system according to any one of claims 13 to 17.

19. A method for generating energy in a wind turbine system, the method comprising: The captured wind is the airflow captured at the inlet of the wind turbine system. The airflow is guided through a flow integration duct of the wind turbine system, the flow integration duct having a cross-sectional area that decreases toward the downstream end of the flow integration duct; Multiple flow dividers are used to separate the airflow, which subdivide the cross-sectional area of ​​the integrated flow duct into three or more flow paths, which gradually merge into a single flow path, so that the airflow leaves the integrated flow duct as a unified airflow. The integrated airflow is guided through the air-driven rotor assembly that drives the generator; and This energy is generated at the generator.

20. The method according to claim 19, wherein, Along the length of the integrated conduit, the number of flow dividers gradually decreases towards the downstream end of the integrated conduit.

21. A wind turbine system comprising: The flow integration duct extends from the airflow capture inlet to the downstream end of the integration duct; as well as An air-driven rotor assembly having an upstream end of a rotor assembly located downstream of the integrated conduit, the air-driven rotor assembly comprising: Rotor housing; The rotor inside the rotor housing has multiple air-driven blades distributed around the rotor's axis of rotation, and the rotor has a radially inward entry direction. An annular pre-rotor flow recirculation channel is defined between the rotor housing and the rotor, and the recirculation channel surrounds the rotor. The recirculation channel extends from its upstream end to its downstream end, the downstream end of which is open and provides fluid continuity from the downstream end to the upstream end. The recirculation channel has a channel cross-sectional area that gradually decreases from the upstream end of the recirculation channel to the downstream end of the recirculation channel.

22. The wind turbine system according to claim 21, wherein, The multiple air-driven blades have a radially inward discharge direction.

23. The wind turbine system according to claim 22, wherein, The rotor further has multiple air redirection blades located radially inside the air drive blade.

24. The wind turbine system according to claim 23, wherein, The air redirection blade has an axial discharge direction that is substantially parallel to the axis of rotation.

25. The wind turbine system according to claim 23 or claim 24, wherein, The air redirection blade has a herringbone shape.

26. The wind turbine system according to any one of claims 21 to 25, wherein, The cross-sectional area of ​​the channel decreases continuously from the upstream end to the downstream end of the recirculation channel.

27. The wind turbine system according to any one of claims 21 to 26, wherein, Multiple flow dividers subdivide the cross-sectional area of ​​the integrated flow pipe into three or more flow paths, which gradually merge into a single flow path at the downstream end of the integrated pipe.

28. The wind turbine system according to any one of claims 21 to 27, further comprising a generator connected to the air-driven rotor.

29. The wind turbine system according to any one of claims 21 to 28, further comprising a wind turbine housing enclosing the flow integration duct and the air-driven rotor assembly.

30. The wind turbine system according to claim 29, wherein, At least a portion of the outer surface of the wind turbine casing is a pitted surface.

31. The wind turbine system according to any one of claims 21 to 30, further comprising an outlet duct fluidly connected to the rotor to discharge airflow from the rotor to the outside of the wind turbine system.

32. A building comprising a wind turbine system according to any one of claims 21 to 31.

33. A method for generating energy in a wind turbine system, the method comprising: The captured wind is the airflow captured at the inlet of the wind turbine system. The airflow is directed through the flow integration duct of the wind turbine system to provide integrated airflow to the air-driven rotor of the wind turbine system; The integrated airflow is guided through an open and annular pre-rotor flow recirculation channel that surrounds the rotor and guides the airflow radially inward toward the rotor's air-driven blades. The pre-rotor flow recirculation channel has a channel cross-sectional area that gradually decreases from the upstream end of the recirculation channel to the downstream end of the recirculation channel. The air-driven blades of this rotor are used to drive the generator; and This energy is generated at the generator.

34. The method according to claim 33, wherein, The flow integration duct that guides the airflow through the wind turbine system includes the use of multiple flow dividers to separate the airflow, which subdivide the cross-sectional area of ​​the flow integration duct into three or more flow paths that gradually merge into a single flow path, so that the airflow exits the flow integration duct as the integrated airflow.

35. The method according to claim 33 or claim 34, wherein, The multiple air-driven blades have a radially inward discharge direction.

36. The method of claim 35, further comprising discharging an airflow from the rotor in an axial discharge direction substantially parallel to the axis of rotation of the rotor.

37. The method of claim 36, wherein, The rotor has multiple air redirection blades located radially inside the air-driven blades to allow the airflow to exit from the rotor.

38. The method according to claim 37, wherein, The air redirection blade has a herringbone shape.

39. The method according to any one of claims 33 to 38, wherein, The cross-sectional area of ​​the channel decreases continuously from the upstream end to the downstream end of the recirculation channel.

Images