Ultra-Thin Fan Blade Structure for Higher Heat Dissipation
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Solution Overview
Problem
The reduction in fan blade area due to ultra-thin design leads to decreased heat dissipation efficiency in fans.
Innovation Solution
A fan assembly design featuring first blades with a greater thickness than second blades, where the first blades protrude from a disk body and surround a wheel hub, while the second blades also protrude from the disk body but with a smaller thickness, maximizing the overall area of the fan blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the fan thickness is reduced to achieve ultra-thin design, then the fan becomes thinner, but the fan blade area must be reduced which leads to decreased heat dissipation efficiency
Solution Approach 1:
The fan blade employs a three-dimensional structure with first blades extending in a first direction and second blades extending in a second direction perpendicular to the first direction, transforming the traditional two-dimensional blade layout into a multi-dimensional configuration. This allows the fan to maintain ultra-thin profile while maximizing the effective blade area through spatial optimization, thereby resolving the contradiction between reduced thickness and maintained heat dissipation efficiency
Solution Approach 2:
The fan blade features non-uniform thickness distribution where the first blades have a first thickness and the second blades have a second thickness different from the first thickness. This local variation in blade properties optimizes the aerodynamic performance and heat dissipation efficiency in different regions of the fan blade, allowing the ultra-thin fan to achieve high productivity despite the overall thickness reduction
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 increases the air pressure by about 2% and air flow rate by about 16%, enhancing heat dissipation performance in ultra-thin fans.
Implementation Method 1
The fan blade is pivotally connected to the motor and rotates relative to a shaft extending along a direction
Data Source
AI summary
A fan assembly includes a motor, a frame body, and a fan blade. The frame body has an accommodating space and a first opening. The motor is located in the accommodating space. The fan blade is pivotally connected to the motor. The fan blade is fixed to and rotates with a shaft extending along a direction. The fan blade includes a wheel hub, a plurality of first blades, and a plurality of second blades. A first thickness of the first blades is greater than a second thickness of the second blades, and the wheel hub and the first blades are exposed in the first opening. A top surface of the first blades and a top surface of the frame body are coplanar.