Toothed Fan Housing Connecting Elements for Airflow Guidance
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Solution Overview
Problem
Conventional fan housings with stator blades experience turbulence and stagnation zones at the air outlet, leading to reduced heat dissipation efficiency, and moving the blades inward compromises the rotating space, especially in miniature fans.
Innovation Solution
The implementation of tooth-type connecting elements with air-guiding teeth at the fan housing's air outlet to smoothly guide airflow, preventing stagnation zones and increasing air pressure and flow while minimizing the fan housing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If stator blades are used to guide air at the fan housing outlet, then air guidance function is improved, but turbulence and stagnation zones occur reducing heat dissipation efficiency
Solution Approach 1:
The stator blade is segmented into multiple discrete air-guiding teeth arranged in a circular pattern, where each tooth independently guides airflow in a specific direction. This segmentation allows better control over air flow distribution, reducing turbulence and stagnation zones while maintaining effective air guidance at the fan housing outlet.
2Ease of operation
If stator blades are moved inward to improve air guidance, then air guidance function is improved, but rotating space is reduced affecting miniature fan performance
Solution Approach 1:
Instead of moving the air-guiding structure inward radially (one dimension), the invention uses air-guiding teeth that extend axially from the outlet surface (another dimension). This allows effective air guidance without encroaching on the impeller's rotating space, maintaining compact dimensions suitable for miniature fans.
3Strength
If conventional ribs are used to connect base and frame, then structural connection is achieved, but no heat dissipation improvement is provided
Solution Approach 1:
The air-guiding teeth serve multiple functions simultaneously: they provide structural connection between the base and frame like conventional ribs, guide airflow effectively at the outlet, and enhance heat dissipation efficiency. This multi-functionality eliminates the need for separate heat dissipation structures, making the component universally beneficial for both structural and thermal performance.
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 solution enhances air pressure and airflow by up to 50% and reduces noise by approximately 50%, without the need to move connecting elements inward, allowing for a minimized fan housing size.
Implementation Method 1
A plurality of air-guiding teeth are formed on at least one edge of the connecting elements, so that the air passing though the connecting elements can be smoothly guided out of the fan to prevent the turbulence and the occurrence of the stagnation zone
Data Source
AI summary
A fan of the present invention includes a fan housing and an impeller disposed in the fan housing. The fan housing includes a plurality of connecting elements at its air outlet. Each connecting element includes a plurality of air-guiding teeth thereon, which can guide the air to flow smoothly out from the fan housing so as to increase airflow and air pressure, and reduce the noise.