Fan Motor Stator Thickness Reduction via Annular Teeth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fan motor stators, composed of stacked silicon steel sheets, face challenges in reducing thickness to accommodate thinner electronic device designs, limiting the miniaturization of fans.
Innovation Solution
A motor stator structure featuring a metal plate with annularly arranged teeth, cylindrical coils between teeth, and iron cores with through holes and latches, along with a manufacturing method that forms teeth and other components to reduce fan volume and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If conventional motor stator is composed of stacked silicon steel sheets, then the stator structure is stable and reliable, but the overall thickness cannot be reduced easily
Solution Approach 1:
The patent merges multiple stacked silicon steel sheets into a single integrated metal plate structure with annular teeth, eliminating the need for multiple separate components while maintaining the magnetic circuit functionality. This consolidation directly reduces the overall thickness of the motor stator from multiple stacked layers to a single plate configuration.
Solution Approach 2:
The metal plate is segmented into multiple annular teeth that are distributed around the circumference, creating discrete magnetic poles while maintaining structural integrity. This segmentation allows the single plate to perform the function of multiple stacked sheets, reducing thickness while preserving magnetic circuit effectiveness.
2Length of stationary object
If conventional motor stator uses stacked silicon steel sheets, then the magnetic circuit is effective, but the fan thickness increases
Solution Approach 1:
The patent transitions from a multi-layer stacked configuration (vertical stacking of sheets) to a planar annular configuration (teeth arranged in a circle within a single plate). This dimensional reorganization maintains the magnetic circuit's functional effectiveness while collapsing the vertical thickness, enabling thinner fan designs.
Solution Approach 2:
Multiple magnetic circuit functions that required separate stacked sheets are combined into a single metal plate with annular teeth, where each tooth serves as a magnetic pole. This integration maintains magnetic circuit effectiveness while eliminating the cumulative thickness of multiple stacked components.
3Strength
If multiple silicon steel sheets are stacked to form stator, then the stator has sufficient strength, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent combines multiple separate silicon steel sheet components into a single integrated metal plate structure. This consolidation reduces the number of manufacturing steps from stacking and assembling multiple sheets to forming and processing a single plate, thereby simplifying manufacturing and reducing costs while maintaining structural strength.
Solution Approach 2:
The single metal plate is segmented into annular teeth that provide the necessary magnetic poles and structural strength. This segmentation approach allows the plate to be formed as a single piece with integrated strength features, eliminating the need for multiple stacked sheets and their associated assembly complexity.
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 solution enables the creation of thinner fans with reduced volume and lower manufacturing costs, addressing the thickness limitations of conventional fans while maintaining effective heat dissipation.
Implementation Method 1
A cylindrical coil is disposed between any two adjacent teeth 110, and both ends of the cylindrical coil 300 being configured corresponsive to the adjacent teeth 110 respectively
Data Source
AI summary
A fan includes a metal plate, multiple cylindrical coils, a frame and an impeller. Multiple teeth annularly arranged and connected with each other are formed on the metal plate. Each cylindrical coil is arranged between adjacent teeth, and each end of the cylindrical coil is arranged toward corresponding tooth. The frame is arranged on a surface of the metal plate and extended along an edge of the metal plate. A flow channel and an air outlet connected to the flow channel are formed by the frame. The impeller is arranged in the flow channel. A stator structure of the fan is simplified by forming the teeth on the metal plate.