Rotating Device Fluid Flow Angle Adjustment

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Solution Overview

Problem

Existing rotary devices for energy extraction from fluid flow, such as wind turbines and propellers, suffer from low efficiency due to a small difference in speed between the rotating system and the fluid, leading to stalling flow and reduced performance.

Innovation Solution

The rotary device maintains the rotating surfaces within the buoyancy principle by adjusting their angle relative to the fluid flow, using a control mechanism that sets constant positive and negative angles to optimize torque and prevent stalling, ensuring a smooth and effective rotation by maintaining a favorable angle to the fluid flow throughout the rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the rotating surfaces are kept at a fixed angle to the flow direction, then the device structure is simple, but the efficiency is low due to stalling flow

Engineering Contradiction:

Improvedevice structureVSAvoidefficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The rotating surfaces are equipped with adjustable angle mechanisms that allow the angle of attack to be dynamically changed during rotation. This enables the device to adapt to varying flow conditions and maintain optimal efficiency by preventing stalling flow, while the adjustment mechanism is integrated into the existing rotor structure.

Inventive Principle:

Principle #15Dynamics

2Productivity

If the angle of the rotating surfaces is adjusted to optimize torque, then the efficiency improves, but the device complexity increases

Engineering Contradiction:

ImproveefficiencyVSAvoiddevice structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

An adjustable angle mechanism is integrated into each rotating surface, allowing the angle of attack to be dynamically changed during rotation. This enables optimization of torque and efficiency while adapting to varying flow conditions, with the adjustment mechanism being compact and integrated into the rotor structure.

Inventive Principle:

Principle #15Dynamics

3Reliability

If the rotating surfaces are adjusted to maintain buoyancy principle throughout rotation, then stalling is prevented, but the control system becomes more complex

Engineering Contradiction:

Improvestalling preventionVSAvoidcontrol system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #15Dynamics

4Productivity

If the speed difference between the rotating system and fluid is increased, then energy extraction improves, but the flow becomes unstable and causes stalling

Engineering Contradiction:

Improveenergy extractionVSAvoidflow stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The adjustable angle mechanism allows the rotating surfaces to dynamically adjust their angle of attack during rotation, enabling the device to operate effectively at higher speed differences with the fluid while maintaining flow stability and preventing stalling through real-time angle optimization.

Inventive Principle:

Principle #15Dynamics

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 approach enhances the efficiency of the rotary device by maintaining a consistent and positive torque, preventing stalling, and ensuring the device operates within the buoyancy principle, resulting in improved energy extraction and reduced wear.

Implementation Method 1

The lift principle is understood here to mean a state of the flow on the rotating surface, which can also be referred to as a rotor blade or wing, in which the flow of the fluid on the rotating surface is continuous.

Methodology Applied

Scientific EffectLift principle: Aerofoil

Implementation Method 2

An advantage of the rotation device of the invention is that the position of the rotating surfaces relative to the direction of flow is always kept within the buoyancy principle by means of the adjusting device in order to achieve maximum efficiency of the rotation device.

Methodology Applied

Scientific EffectBuoyancy principle: Archimedes' Principle (Buoyancy)

Data Source

PatentEP1979611B1Rotating device to be used in a fluid

Publication Date: 2010.11.17 AQUAPOWER - ERNEUERBARE ENERGIE AUS WASSERKRAFT

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AI summary

The invention relates to a rotating device that is to be used in a fluid in order to generate power from the flowing movement (5) of a fluid or convert power into a movement of a fluid. Said rotating device comprises a main rotating mechanism which is fixedly connected to a central rotary shaft of the rotating device, one or several revolution surfaces (1, 2) which are mounted on the main rotating mechanism so as to be rotatable about the shafts of the revolution surfaces at a distance from the rotary shaft such that the main rotating mechanism can perform a rotary movement about the central rotary shaft by means of at least one revolution surface, the shafts of the revolution surfaces extending parallel to the shaft of the main body. An apparatus is provided which adjusts an angle of the revolution surface relative to a direction of flow of the fluid in such a way that the buoyancy principle is followed on the revolution surface. Furthermore, the revolution surfaces (1, 2) can be deformable.