Logarithmic Spiral Impeller for Compact Urban Wind Capture
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Solution Overview
Problem
Existing wind turbine designs suffer from low wind energy utilization, high noise levels, large footprint, and difficulty in installation and distribution, making them unsuitable for urban areas and costly to implement.
Innovation Solution
A wind power collection device with an impeller design featuring four spliced flow guide surfaces formed by logarithmic spiral lines, which guide winds to form cyclones, enhancing energy collection efficiency and incorporating circular cover plates for stability and sealing, connected to a rotating assembly for power conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a horizontal axis fan is used to drive the wind power collection device, then the structure can be simplified, but the wind energy utilization efficiency decreases due to counter-wind loss and the blade requires large setting area with loud noise
Solution Approach 1:
The patent inverts the conventional horizontal axis fan design by using a vertical axis impeller with flow guide surfaces. Instead of horizontal blades rotating around a horizontal axis, the invention employs vertical blades with specific flow guide curves that guide wind to form cyclones, eliminating counter-wind loss and improving energy utilization while maintaining structural simplicity
Solution Approach 2:
The patent applies curved flow guide surfaces with logarithmic spiral curves to the impeller blades. These curved surfaces efficiently guide the wind flow and generate cyclonic motion, improving the conversion of wind kinetic energy to mechanical energy while reducing the required blade area and noise compared to conventional straight-blade designs
2Power
If a horizontal axis fan with large blade area is used, then the wind power collection capability is improved, but the setting area requirement increases, installation becomes difficult, and noise increases
Solution Approach 1:
The patent transitions from horizontal axis rotation to vertical axis rotation, changing the dimensional orientation of the impeller. This vertical axis configuration with cyclone-generated flow allows for more compact footprint while maintaining or enhancing power collection capability, reducing the required setting area and facilitating easier installation in urban environments
3Power
If conventional wind turbine blades are used, then wind power can be collected, but the device is difficult to install and maintain, and distributed setting is challenging
Solution Approach 1:
The patent employs an impeller with four separate flow guide surfaces that can be manufactured independently and assembled together. This segmented design simplifies manufacturing and installation processes, allows for easier maintenance by replacing individual surfaces, and facilitates distributed deployment in various locations including urban areas
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 achieves efficient wind energy utilization, low noise operation, easy installation, and suitability for distributed settings, with improved energy collection across varying wind conditions.
Implementation Method 1
the flow guide surfaces are formed by rotating and stretching the flow guide curves around an axis line of the impeller in an axial direction; the flow guide curves each include a segment of convex first logarithmic spiral line and a segment of concave second logarithmic spiral line
Implementation Method 2
The principle of wind drive is to convert the kinetic energy of the wind into mechanical energy
Data Source
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AI summary
The present invention provides a wind power collection device, a gas storage device, and a power generation system. The wind power collection device includes an impeller, an outer side wall of the impeller is composed of four mutually spliced flow guide surfaces, radial cross sections of the four mutually spliced flow guide surfaces correspond to four mutually spliced flow guide curves, the flow guide surfaces are formed by rotating and stretching the flow guide curves around an axis line of the impeller in an axial direction; and the flow guide curves include a segment of convex first logarithmic spiral line and a segment of concave second logarithmic spiral line, and the first logarithmic spiral line and the second logarithmic spiral line of the flow guide curves are smoothly and transitionally connected at one side close to the axis line. Wind in different directions enters the flow guide surfaces of the impeller of the present invention to form a cyclone so as to drive the impeller to rotate, collected wind power is converted into a rotating force of a rotating shaft, which can be used for driving a compression device to compress air, and the compressed and stored air may drive a cyclone engine to realize stable and controllable power generation.