Modular Fan Blade Segmentation for Noise Reduction
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Solution Overview
Problem
Existing fan designs face challenges in increasing wind output while maintaining wind pressure and reducing noise, as higher rotating speeds lead to increased noise and reduced wind pressure, limiting heat dissipation efficiency in 3C products.
Innovation Solution
A modular fan blade system comprising a first fan blade with a hub and flange, and a second fan blade with a fan frame that can be combined through latching or screwing, allowing for adjustable vane configurations to enhance wind output and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotating speed of the fan is increased to achieve higher wind output, then the heat dissipating effect is improved, but the noise produced by the fan rotation increases and the wind pressure decreases
Solution Approach 1:
The fan blade is divided into multiple independent vane modules that can be selectively assembled. The hub includes a retaining space with positioning structures, and each vane has corresponding positioning features that enable modular assembly. This segmentation allows optimization of wind output through selective vane configuration without increasing rotating speed, thereby avoiding noise generation.
Solution Approach 2:
The second fan blade is nested within the first fan blade structure. The second fan blade includes a fan frame disposed at the flange of the hub and sheathed on the hub, with vanes arranged inside the retaining space. This nested configuration increases wind output by utilizing the internal space efficiently without requiring higher rotating speeds, thus preventing noise increase.
2Productivity
If the rotating speed of the fan is increased to achieve higher wind output, then the heat dissipating effect is improved, but the wind pressure of the fan decreases
Solution Approach 1:
The fan blade is divided into multiple independent vane modules that can be selectively assembled. The hub includes a retaining space with positioning structures, and each vane has corresponding positioning features that enable modular assembly. This segmentation allows optimization of wind output through selective vane configuration without increasing rotating speed, thereby avoiding noise generation.
Solution Approach 2:
The invention changes the structural parameters of the fan blade by using modular vane configurations with specific cross-sectional shapes, thicknesses, and arrangement patterns. The vanes include leading edges, trailing edges, and arc-shaped configurations that optimize aerodynamic performance. These parameter changes enable increased wind output while maintaining wind pressure through improved airflow efficiency rather than increased speed.
3Adaptability or versatility
If a modular design with multiple fan blades is used to increase wind output, then the flexibility and adaptability are improved, but the device complexity increases
Solution Approach 1:
The fan blade is divided into multiple independent vane modules that can be selectively assembled. The hub includes a retaining space with positioning structures, and each vane has corresponding positioning features that enable modular assembly. This segmentation allows optimization of wind output through selective vane configuration without increasing rotating speed, thereby avoiding noise generation.
Solution Approach 2:
The modular vane design provides multi-functionality by enabling different vane configurations to be assembled on the same hub. The standardized retaining space and positioning structures allow various vane arrangements to achieve different performance requirements (wind output, noise reduction, wind pressure maintenance). This universal interface simplifies the overall system by using standardized components rather than completely different fan designs.
Data Source
AI summary
A modular fan blade includes a first fan blade and a second fan blade. The first fan blade includes a hub and plural first vanes, and the hub has an external periphery, and the first vane is combined with the external periphery, and a flange is formed at the external periphery and a retaining space is formed on a surface of the flange; and the second fan blade includes a fan frame and plural second vanes, and the fan frame is installed at the flange of the hub, sheathed on the hub, and installed in the retaining space, so as to achieve the effects of increasing the wind output of the fan effectively and replacing the blades conveniently.