Symmetric Cooling Element for Electromagnetic Noise Offset
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Solution Overview
Problem
Conventional cooling fins made of metal materials can couple with electronic components, leading to the transmission and radiation of electromagnetic noise, which is not effectively mitigated by existing designs.
Innovation Solution
A cooling element formed by bending a plate into a symmetric structure with a contact part, an extension part, and a dissipation part, where the free ends rise and extend to form an 'I' shape, allowing heat and noise absorption and dissipation while offsetting electromagnetic noise through the symmetric design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a regular cooling plate made of metal material is used, then heat conduction efficiency is improved, but electromagnetic noise transmission and radiation increase
Solution Approach 1:
The cooling plate is designed with an asymmetric structure where one surface features a reflective layer facing the electronic component while the other surface remains different. This asymmetry causes electromagnetic noise to reflect differently in opposite directions, preventing the noise from being effectively radiated while maintaining heat conduction functionality
Solution Approach 2:
A reflective layer is introduced as an intermediary between the electronic component and the cooling plate surface. This layer reflects electromagnetic noise back toward the component while allowing thermal energy to be conducted away, effectively decoupling the noise transmission path from the heat conduction path
2Temperature
If the cooling plate contacts the electronic component, then heat absorption is improved, but electromagnetic noise coupling increases
Solution Approach 1:
The cooling plate incorporates a reflective layer at the specific location where it contacts or faces the electronic component. This localized modification creates different electromagnetic properties at different parts of the plate - the reflective surface prevents noise coupling at the contact interface while the rest of the plate maintains its heat conduction function
Solution Approach 2:
The reflective layer serves as an intermediary barrier between the electronic component and the metal cooling plate. It prevents direct electromagnetic coupling while allowing thermal energy transfer to proceed through the plate structure
3Productivity
If the cooling plate is designed with extended surfaces for heat dissipation, then cooling efficiency is improved, but the antenna effect for noise absorption is enhanced
Solution Approach 1:
The extended surfaces of the cooling plate are designed with asymmetric geometry where one side features a reflective layer while the other does not. This creates differential electromagnetic behavior - noise incident from the component side is reflected, while noise from other directions experiences different interaction, reducing the overall antenna effect despite the extended surface area
Solution Approach 2:
The reflective layer acts as an intermediary that modifies how electromagnetic noise interacts with the extended cooling surfaces. By reflecting noise away from the plate structure, it prevents the extended surfaces from effectively functioning as noise-absorbing antennas while maintaining their heat dissipation capability
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 cooling element effectively absorbs and dissipates heat and electromagnetic noise, reducing noise transmission and radiation, as demonstrated by improved electromagnetic interference performance compared to systems without the cooling element.
Implementation Method 1
when the metal base board 11 receives heat conducted from the electronic component (e.g. CPU), the metal base board 11 will then conduct the heat to the bar-type fins 12
Implementation Method 2
the electromagnetic noises being transmitted along the paths between the contact part and the dissipation part are mutually offset from each other in accordance with the electromagnetic differential theory
Data Source
AI summary
The present invention is to provide a cooling element for eliminating electromagnetic noise, which is formed by bending a plate into a symmetric structure symmetrically comprising a contact part being in connect with an electronic component to absorb heat and noise radiated therefrom; an extension part having one end connected with said contact part to absorb heat and noise from said contact part; and a dissipation part connected with the other end of said extension part to absorb heat and noise from said extension part; wherein the noises absorbed by the cooling element are transmitted along the paths among the contact part, extension part and the dissipation part, and are mutually offset with each other in accordance with the symmetric structure thereof.