Slim Fan Structure Using Integrated Circuit Board Stator
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Solution Overview
Problem
Conventional heat dissipating fans are bulky and heavy due to their complex structure requiring multiple components and heavier materials, which limits their slim design and increases manufacturing costs.
Innovation Solution
A slim-type fan structure featuring a stator made from a circuit board with layout circuits and a fan blade integrally formed with a magnetic material, including a magnetic unit with N and S pole areas, and a fan shield for secure assembly, allowing for a lightweight and compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional fan structure with separate stator, rotator, and magnetic unit components is used, then the fan can achieve reliable electromagnetic induction and rotation, but the overall structure becomes bulky and heavy, failing to meet slim design requirements
Solution Approach 1:
The patent merges the stator and magnetic unit into a single integrated structure where the magnetic unit is directly formed on the circuit board. The circuit board serves dual functions as both the stator support and the magnetic unit carrier, eliminating the need for separate magnetic component assemblies and reducing overall fan thickness.
Solution Approach 2:
The circuit board is designed to serve multiple functions simultaneously: it acts as the structural support for the stator, carries the magnetic unit for electromagnetic induction, and provides the mounting surface for layout circuits. This multi-functionality reduces the number of separate components needed, achieving a slimmer profile.
2Ease of manufacture
If multiple separate components are assembled to form the fan blade, then the fan can achieve proper electromagnetic induction, but the assembly process becomes complex and costly
Solution Approach 1:
The magnetic unit is integrated directly into the circuit board structure, forming a single component rather than requiring separate magnetic pieces to be assembled. This integration eliminates multiple assembly steps and reduces manufacturing complexity while maintaining the necessary electromagnetic induction functionality.
3Weight of moving object
If heavier materials are used to ensure structural strength in conventional fans, then the fan achieves reliable operation, but the overall weight increases, preventing lighter product design
Solution Approach 1:
The circuit board is constructed using composite material layers including a base layer and a magnetic layer with different magnetic permeability. This composite structure provides both the necessary structural strength and the magnetic properties required for electromagnetic induction, while keeping the overall weight low compared to conventional metal-based constructions.
4Length of moving object
If a conventional blade wheel structure with axial sleeve is used, then the fan can achieve proper pivotal arrangement, but the center structure becomes bulky
Solution Approach 1:
The axial sleeve is integrated directly into the blade wheel center structure, eliminating the need for separate axial sleeve components. The blade wheel includes a center portion with an axial hole that directly receives the pivotal arrangement, reducing the overall center thickness while maintaining reliable rotation.
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 results in a lightweight, compact fan design with enhanced performance and reduced manufacturing costs, achieving a slim and efficient heat dissipation solution.
Implementation Method 1
the magnetic unit is disposed on the blade wheel... arranged corresponding to the plurality of layout circuits along a vertical direction in order to achieve the slim-type fan structure
Data Source
AI summary
A slim-type fan structure includes a stator (1) and a fan blade (2). The stator includes a circuit board (11) and a plurality of layout circuits (12) disposed to circumference the circuit board (11). The stator (1) includes an axial center (10) at a center portion thereof. The fan blade (2) includes a blade wheel (20), an axial sleeve (21) at a center of the blade wheel (20) and extended axially therefrom, a plurality of blades (22) formed to circumference an outer of the blade wheel (20), and a magnetic unit (23) disposed on the blade wheel (20). Also, the axial sleeve (21) is pivotally attached to the axial center (10). Accordingly, the magnetic unit (23) is formed by a plurality of N and S pole areas (230), (231) arranged alternatively in circular rows and corresponding to the layout circuits (12) along a vertical direction for the slim design.