3D Dust Extraction Mesh for Electronic Device Cooling
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Solution Overview
Problem
Conventional dust extraction methods in electronic devices, such as notebooks, often compromise heat dissipation performance, increase noise, and reduce airflow due to dust accumulation, and existing solutions either occupy valuable space, increase air resistance, or are prone to dislodgment during system shakes.
Innovation Solution
A three-dimensional dust extraction mesh with a dual-fixing structure, where the mesh is securely attached between the fan and the cover using fixing portions at the air inlet and periphery, preventing dislodgment and maintaining airflow while allowing easy disassembly for cleaning, and featuring a three-dimensional shape to enhance dirt blocking and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a dust extraction unit is disposed between the fan and the fin, then dust extraction is improved, but the space for disposing the dust extraction unit should be added and it may affect the configuration of fan or fin
Solution Approach 1:
The dust extraction mesh is nested within the existing fan assembly structure, utilizing the space between the fan blades and the housing without requiring additional external space. The mesh is integrated into the fan's existing geometric configuration.
Solution Approach 2:
The dust extraction mesh is positioned in a three-dimensional space between the fan blades, utilizing the radial and axial dimensions of the fan assembly rather than requiring additional planar space outside the existing configuration.
2Object-affected harmful factors
If a dust extraction net is disposed at the inlet of the system, then dust extraction is improved, but the resistance of the inlet is increased and supply air volume is decreased
Solution Approach 1:
The dust extraction mesh acts as an intermediary element positioned between the fan blades and the housing, allowing air to pass through while filtering dust. This intermediate positioning avoids the high resistance problem of inlet nets by being downstream of the air intake.
Solution Approach 2:
The mesh is positioned locally at specific regions where dust accumulation is most problematic (between fan blades and housing), rather than blocking the entire inlet, thus maintaining overall airflow while providing targeted dust extraction.
3Device complexity
If only the dust extraction mesh is fixed to the fan, then the fixing structure is simplified, but the dust extraction mesh easily drops when the system is shaken
Solution Approach 1:
The fixing mechanism combines multiple attachment points distributed around the mesh perimeter with the fan structure, creating a distributed fixation system that prevents detachment during vibration while maintaining structural simplicity.
4Reliability
If the fixing structure is located at the side of the fan, then the dust extraction mesh can be fixed, but the system space is reduced
Solution Approach 1:
The fixing structure is nested within the existing fan assembly geometry, utilizing the space between the fan blades and housing rather than occupying additional external space, thus maintaining system compactness.
Data Source
AI summary
An electronic device includes an accommodating space, a fan, a cover, and a three dimensional dust extraction mesh. The fan is disposed in the accommodating space. The fan includes a first fixing portion. The cover detachably covers the accommodating space, and the cover includes a second fixing portion in accommodating space. The three dimensional dust extraction mesh includes a body, a third fixing portion, and a fourth fixing portion, and the third fixing portion and the fourth fixing portion are located at periphery of the body. The third fixing portion of the three dimensional dust extraction mesh cooperates with the first fixing portion of the fan, and the fourth fixing portion of the three dimensional dust extraction mesh cooperates with the second fixing portion of the cover to detachably fix the three dimensional dust extraction mesh between the cover and the fan.