Magnetic Fan Blade Control for Vibration Balancing
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Solution Overview
Problem
As electronic devices become smaller and thinner, maintaining fan balance becomes challenging due to reduced gaps between the fan and housing, leading to performance issues, increased noise, and risk of fan blade damage, with existing solutions like thicker fans or manual tuning being costly or resource-intensive.
Innovation Solution
The use of a coil magnet system controlled by a processor to adjust the movement of fan blades, ensuring balance by applying current to create a magnetic field that attracts or repels magnets on the blades, thereby maintaining optimal rotation and minimizing the form factor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the gap between the fan and fan housing is reduced to maintain smaller form factor, then the form factor is improved, but the risk of fan blade damage due to mechanical interference increases
Solution Approach 1:
The system uses vibration sensors to detect fan blade imbalance and sends feedback signals to the coil magnet controller, which adjusts the magnetic field in real-time to correct the imbalance, preventing fan blade damage while maintaining reduced gap dimensions
Solution Approach 2:
The patent replaces traditional mechanical balancing methods (such as physical adjustment of fan blade weights) with an electromagnetic field-based coil magnet system that uses magnetic forces to balance the fan blades, eliminating the need for mechanical interference clearance
2Reliability
If traditional balancing methods like thicker fans or manual tuning are used, then fan balance is improved, but manufacturing cost and resource intensity increase
Solution Approach 1:
The system performs self-balancing through the coil magnet and control processor, which automatically detect and correct fan blade imbalance without requiring manual intervention or specialized manufacturing processes, reducing both cost and resource requirements
Solution Approach 2:
The patent changes the physical state of the balancing mechanism from static mechanical adjustments to dynamic electromagnetic field control, allowing for cost-effective manufacturing while achieving superior fan balance through controllable magnetic forces
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 provides a cost-effective and efficient method to maintain fan balance, reducing noise and preventing damage while allowing for smaller form factors in electronic devices, enhancing operational efficiency and reducing the need for manual tuning.
Implementation Method 1
applying current to create a magnetic field that attracts or repels magnets on the blades
Implementation Method 2
coil magnet system controlled by a processor to adjust the movement of fan blades, ensuring balance by applying current to create a magnetic field
Data Source
AI summary
In example implementations, an apparatus is provided. The apparatus includes an accelerometer, a plurality of fan blades, a coil magnet and a processor. The accelerometer is coupled to a motor to measure an amount of vibration. The plurality of fan blades is coupled to the motor. Each one of the plurality of fan blades comprises a magnet. The coil magnet is coupled to a fan housing that encloses the motor, the plurality of fan blades and the accelerometer. The processor is communicatively coupled to the motor, the accelerometer, and the coil magnet. The processor activates the coil magnet to control a balance of the plurality of fan blades in response to an amount of vibration measured by the accelerometer that exceeds a threshold.