Micro Cooling Fan Driving Circuit Integration
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Solution Overview
Problem
Existing micro cooling fans face challenges in heat dissipation due to the placement of the driving circuit, which limits space and increases wind resistance, making it difficult to integrate a three-phase motor for miniaturization without compromising cooling efficiency.
Innovation Solution
The integration of the driving circuit with the housing forms an integral structure, allowing the driving circuit to be placed on the outer surface or embedded within the housing, reducing wind resistance and eliminating the need for additional space, thereby enhancing cooling efficiency through thermal convection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the driving circuit is placed in the loading space of the inner annular wall, then the cooling problem of the driving circuit is solved, but the manufacturing process of the frame becomes complex
Solution Approach 1:
The driving circuit board is integrated with the housing to form an integral structure, merging two separate components into one. This eliminates the need for separate mounting spaces and simplifies the manufacturing process while maintaining effective cooling through the housing structure.
2Use of energy by moving object
If the cooling fan is miniaturized, then the power consumption is reduced, but the space for disposing the driving circuit is limited
Solution Approach 1:
By integrating the driving circuit board with the housing, the patent eliminates the need for separate mounting space. The driving circuit is disposed on the outer surface of the housing, effectively utilizing the housing structure itself as the mounting platform, which enables miniaturization without compromising the driving circuit space.
Solution Approach 2:
The driving circuit board is positioned on the outer surface of the housing, utilizing the external dimension of the housing structure. This spatial arrangement allows the driving circuit to be accommodated without increasing the internal volume requirements, facilitating miniaturization.
3Object-generated harmful factors
If the driving circuit is disposed on the housing, then the wind resistance is reduced, but the cooling consideration for the driving circuit must be addressed
Solution Approach 1:
The driving circuit board is integrated with the housing to form an integral structure, merging two separate components into one. This eliminates the need for separate mounting spaces and simplifies the manufacturing process while maintaining effective cooling through the housing structure.
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 configuration improves cooling performance by reducing wind resistance and addressing space constraints, allowing for effective cooling of both the fan and the driving circuit within a compact design.
Implementation Method 1
a fan wheel (110) having a plurality of fan blades (1101) is disposed in the accommodation space (122)
Implementation Method 2
the driving circuit and a housing (102) of the micro cooling fan are integrated to form an integral structure, such that the wind resistance of the micro cooling fan is reduced, thereby improving the cooling effect of the micro cooling fan
Data Source
AI summary
A micro cooling fan includes a housing, a fan wheel, and a main circuit board. The main circuit board has a stator and a driving circuit. The stator is electrically connected to the driving circuit. The stator is disposed on a first inner surface, and the driving circuit is disposed on a first outer surface, so that the housing and the driving circuit of the micro fan motor form an integral structure. The first outer surface is opposite to the first inner surface, or the first outer surface is located on a side surface of the housing. Therefore, by disposing the driving circuit on the first outer surface, the wind resistance of the fan blades is reduced, and the air volume of the micro cooling fan is increased accordingly, so that the cooling effect of the micro cooling fan is improved.