Wind Power Rotor With Guide Plates for Enclosed Airflow
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Solution Overview
Problem
Existing wind power generators face issues with low wind energy utilization, increased manufacturing costs due to movable parts, and safety risks from excessive loads on bearings and exposed rotors, necessitating improvements in design to enhance efficiency and safety.
Innovation Solution
A wind power generation device featuring baffle plates, guide plates, and blade disks with a hollow space design that guides air flow efficiently, reduces resistance, and allows multiple rotations of air flow to enhance energy conversion, while minimizing bearing wear and reducing component wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a servo motor and worm-gear reducer are used to adjust blade pitch angle, then wind energy utilization rate is improved, but manufacturing cost increases and fault probability increases due to increased movable parts
Solution Approach 1:
The invention extracts and eliminates the servo motor and worm-gear reducer from the blade pitch adjustment mechanism. Instead of using complex mechanical components, the patent uses a simple rotating connector that allows the blade to rotate and adjust its pitch angle passively through aerodynamic forces, thereby reducing the number of movable parts and manufacturing cost while maintaining wind energy utilization
Solution Approach 2:
The blade pitch adjustment system performs self-service by using aerodynamic forces and gravitational effects to automatically adjust the blade pitch angle during rotation. The rotating connector enables the blade to tilt and adjust its angle of attack without external actuation, eliminating the need for complex control mechanisms
2Ease of operation
If the rotor is exposed to the outside for rotation, then the generator can operate, but safety risk increases during operation
Solution Approach 1:
The invention applies nesting by placing the rotating rotor inside a protective housing structure. The rotor is nested within the stator assembly, which is enclosed by the housing. This nested configuration allows the rotor to rotate freely for operation while being protected from external hazards, thus reducing safety risks without affecting operational ease
Solution Approach 2:
The protective housing acts as a flexible shell that encloses the rotor and stator components. This shell structure provides safety protection while allowing rotational movement of the internal components, resolving the contradiction between operational ease and safety risk
3Ease of operation
If the axis moves a long distance with respect to the rotor, then the generator can function, but excessive load is generated to the bearing, damaging it
Solution Approach 1:
The invention extracts and eliminates the long-axis movement mechanism between the generator and rotor. Instead of using a long moving axis that subjects bearings to excessive load, the patent uses a direct coupling approach where the rotor connects directly to the generator through a shortened axis, reducing bearing load while maintaining generator function
Solution Approach 2:
The invention inverts the traditional design by making the stator housing movable rather than the rotor axis moving a long distance. The entire stator assembly can rotate or move as a unit, which reduces the movement distance and load on individual bearing components while preserving the generator's functional capability
4Ease of operation
If blades on one side rotate downwind, then the generator operates, but blades on the opposite side surface from resistance against wind, reducing wind energy utilization rate
Solution Approach 1:
The invention applies dynamics by enabling the blade pitch angle to change dynamically during rotation. The rotating connector allows each blade to automatically adjust its pitch angle according to its position in the rotation cycle, optimizing the angle of attack for both upwind and downwind positions. This dynamic adjustment ensures that blades on the opposite side do not experience excessive resistance, thereby maintaining high wind energy utilization rate while preserving generator operation
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
The device improves wind energy conversion efficiency, reduces bearing wear, and enhances operational safety by guiding air flow effectively, allowing multiple rotations and minimizing vertical wind escape, thus optimizing energy utilization and reducing costs.
Implementation Method 1
the plurality of guide plates are arranged between the baffle plates in a surrounding manner, with the normal center line of the baffle plates 1 as a center, so that all air flows entering the device will be guided into a direction beneficial to the rotation of the rotor
Implementation Method 2
an air flow entering a stator can enter the hollow space to drive the rotor twice or more times, so that wind energy is better used, and an air vortex beneficial to the rotation of the rotor is formed in the hollow space
Implementation Method 3
the plurality of blades are arranged between the blade disks in a surrounding manner, with the normal center line of the blade disks as a center, a hollow space is formed in the blade disks at the two ends and the blades
Implementation Method 4
the baffle plates and the blade disks can enclose a wind force entering the inner rotor, so that the wind force is prevented from escaping in a vertical direction
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a wind power generation device, which comprises: baffle plates arranged oppositely; a plurality of guide plates arranged between the baffle plates at intervals around a normal center line of the baffle plates; blade disks arranged oppositely, located between the baffle plates and rotatably connected to the baffle plates; and a plurality of blades arranged between the blade disks at intervals around a normal center line of the blade disks, a hollow space being formed by the blade disks and the blades. Fabrication and product costs are reduced. The baffle plates and the blade disks are able to enclose a wind flow entering an inner rotor, so that wind flow is prevented from escaping in a vertical direction. Design parameters are simple and effective, and the wind energy-to-electric energy conversion efficiency is effectively improved.