Pivotable Vertical Axis Turbine Blades
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Solution Overview
Problem
Existing wind turbines and water wheels with vertical axes face inefficiencies due to complex adjustment mechanisms for optimal angle of attack, leading to wear and increased costs, and suboptimal efficiency when wings are firmly coupled.
Innovation Solution
The blades pivot automatically under flow influence to adjust between larger and smaller contact surfaces, with individual wing control and a cambered profile to enhance efficiency, and are designed with a stop to optimize positioning, allowing for independent alignment and power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adjustment mechanisms are used to optimize the angle of attack of blades, then efficiency is improved, but device complexity increases and wear problems occur
Solution Approach 1:
The blade adjusts its own angle of attack automatically through the flow-induced tilting mechanism without external control systems. The flow itself serves as the actuator, eliminating complex adjustment mechanisms while maintaining efficiency optimization
Solution Approach 2:
The patent replaces mechanical adjustment systems with a flow-driven automatic tilting mechanism. The aerodynamic forces directly control the blade angle, substituting complex mechanical actuators with a simpler fluid-structure interaction system
2Productivity
If wings are firmly coupled to arms, then structural simplicity is maintained, but efficiency decreases due to inability to optimize angle of attack
Solution Approach 1:
The blade is divided into independent rotational segments that can tilt relative to the arm. This segmentation allows each blade to independently optimize its angle of attack while maintaining overall structural integrity, resolving the conflict between simplicity and efficiency
Solution Approach 2:
The coupling between blade and arm is made dynamic rather than fixed. The blade can dynamically adjust its angle through automatic tilting in response to flow conditions, transforming a static simple structure into a dynamic efficient system
3Productivity
If blades have symmetric geometry, then manufacturing is simplified, but aerodynamic efficiency is reduced
Solution Approach 1:
The blade cross-section uses asymmetric cambered geometry to optimize aerodynamic performance. The asymmetric shape generates lift forces that improve efficiency, while the manufacturing complexity is managed through the self-adjusting mechanism that reduces the need for precision mechanical control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design significantly improves efficiency by optimizing wing positioning and reducing resistance, ensuring even operation and enhanced power generation through independent wing alignment and aerodynamic lift.
Implementation Method 1
the wings have a cambered wing profile. As a result, the efficiency can be significantly increased, since in addition to the wind resistance, the aerodynamic lift force on the wing acts in the direction of the rotational movement of the vertical wind wheel axis
Implementation Method 2
The center of mass of the wings is preferably outside the pivot axis and is arranged in such a way that the wings automatically tilt from the second position (without the influence of flow) into a rest position with a larger contact surface
Implementation Method 3
Under the influence of the flow, a tilting moment thus arises, which adjusts the wing in question either in the direction of the first or the second position
Data Source
Figure 1
Figure 2
AI summary
The device comprises a rotating axis (2) with one or more arms (3), where wings (4) are arranged at the arms and are supported in a swiveling manner. The wings are inclined in one position with a larger contact surface and inclined in another position with smaller contact surface. A flank area is inclined when it automatically moves into the former position with a stream (10) or in the latter position against the stream.