Three-Phase DC Cooling Fan for Electronic Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices face heat management challenges due to substantial heat generation by electrical components, which can lead to damage or operational inhibition, and existing cooling solutions are inefficient and noisy.
Innovation Solution
A redundant cooling fan system utilizing three-phase DC motors with optimized impeller design and bearing assemblies, along with a unique blade profile, to enhance airflow efficiency and reduce noise and resistance, while maintaining high reliability and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling fans are used, then heat removal function is provided, but noise level increases and cooling efficiency decreases
Solution Approach 1:
The patent changes the motor type from conventional single-phase AC motor to three-phase DC motor, altering the electrical parameters and operating characteristics. This parameter change enables more efficient motor operation with reduced noise and improved cooling performance while maintaining effective heat removal capability
2Temperature
If conventional cooling fans are used, then basic cooling function is provided, but airflow efficiency is insufficient
Solution Approach 1:
The patent optimizes impeller parameters including blade angle, blade width, and number of blades. These parameter changes to the impeller design significantly improve airflow generation and moving air capability, thereby enhancing cooling efficiency and heat removal performance
3Reliability
If conventional motors are used, then fan operation is achieved, but motor efficiency and reliability are insufficient
Solution Approach 1:
The patent transitions from conventional single-phase AC motor to three-phase DC motor, fundamentally changing the motor's electrical parameters and operational characteristics. This enables higher efficiency energy conversion and more reliable operation with better torque characteristics and reduced heat generation in the motor itself
4Reliability
If standard bearing assemblies are used, then motor rotation is supported, but bearing life and reliability are limited
Solution Approach 1:
The patent employs precision bearing assemblies with optimized material composition and structural design. The bearing materials and construction are specifically selected to provide enhanced durability, reduced friction, and extended service life, thereby improving both reliability and operational duration of the motor assembly
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 system effectively manages heat in electronic devices by improving airflow efficiency, reducing noise, and extending bearing life, ensuring reliable operation with increased efficiency and reduced maintenance needs.
Implementation Method 1
The cooling fan includes a three-phase DC motor with a stator and an impeller
Implementation Method 2
The cooling fan includes a three-phase DC motor with a stator and an impeller
Implementation Method 3
The cooling fan includes a bearing assembly
Data Source
AI summary
A cooling fan having motor and an impeller. The cooling fan may comprise a three-phase DC motor. The impeller may comprise a hub to house the three-phase DC motor and a plurality of blades extending from the hub. Each blade may have a height that is at least 25 % of the impeller diameter.