Twisted Fan Blade Structure for Concentrated Axial Airflow
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Solution Overview
Problem
Existing fan blades are inclined at an angle of 10 degrees to the horizontal plane, limiting the air outputting effect and affecting the air blowing efficiency.
Innovation Solution
The fan blade design features a twisted tail relative to the root, converging incoming air, with a thicker first side and thinner second side, and an air guide cone to enhance air flow concentration and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fan blade is inclined at an angle of 10 degrees to the horizontal plane, then the structure is simple and easy to manufacture, but the air outputting effect is limited and air blowing efficiency is reduced
Solution Approach 1:
The fan blade transitions from a static inclined structure to a dynamic twisted structure where the blade angle varies along its length. The tail section is twisted relative to the root section, creating a progressive angle change that optimizes air flow capture and conversion throughout the blade span, thereby improving air blowing efficiency while maintaining manufacturing feasibility
Solution Approach 2:
The blade design changes the geometric parameter of inclination angle from a fixed 10 degrees to a variable parameter that changes along the blade length. The twisting creates a gradient of angles where the root section maintains a smaller angle and the tail section has a larger angle, optimizing the air flow interaction at different radial positions and enhancing overall productivity
2Ease of manufacture
If the fan blade uses a uniform thickness design, then the manufacturing process is simple, but the air flow convergence and axial pressure generation are insufficient
Solution Approach 1:
The fan blade transitions from uniform thickness to a non-uniform thickness distribution where different sections of the blade have different thicknesses. The root section has a smaller thickness while the tail section has a larger thickness, creating local variations that optimize both structural integrity and air flow convergence, thereby enhancing axial pressure generation without excessive manufacturing complexity
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 design improves air blowing efficiency, reduces energy consumption, and enhances user experience by increasing axial pressure and air supply rate.
Implementation Method 1
the tail is twisted relative to the root, and a twisted part plays a role in converging incoming air, so that air blown out of the fan blade is more concentrated
Data Source
AI summary
A fan blade and a fan are provided. The fan blade includes a hub and a plurality of blades. Each blade includes a blade root and a blade tail. The blade tail is twisted relative to the blade root. The blade roots of the plurality of blades are connected to the hub. By twisting the blade tail relative to the blade root, a twisted part plays a role in converging incoming air, so that air blown out of the fan blade is more concentrated, an air blowing effect is enhanced, and a user experience is enhanced. The twisted part plays the role in converging the incoming air, so that the air blown out of the fan blade is more concentrated, which increases an axial pressure, forms an air flow, improves air flowing efficiency of the blades, and improves a wind effect.