Ionic Motion Cooling for Electronics Without Mechanical Ventilation
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Solution Overview
Problem
The increasing energy density and overheating issues in electronic equipment, particularly in aerospace applications, are exacerbated by ventilation systems that add cost, weight, and complexity, while corona discharge is typically avoided due to its detrimental effects.
Innovation Solution
A thermal management system utilizing an ionic motion generator with an anode and cathode to generate ionic discharge for fluid flow, harnessing corona discharge energy to cool electronic equipment through a closed-loop fluid pathway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If ventilation systems are used to cool electronic equipment, then cooling effectiveness is improved, but weight and system complexity increase
Solution Approach 1:
The patent replaces mechanical ventilation systems (fans, motors, moving parts) with an ionic motion generator that uses electrohydrodynamic forces to move fluid. This substitution eliminates mechanical components while maintaining cooling functionality, directly resolving the contradiction between cooling effectiveness and system complexity
Solution Approach 2:
The patent uses fluid dynamics and ionic wind generation to achieve cooling without mechanical moving parts. The ionic motion generator creates electrohydrodynamic flow in a closed-loop fluid pathway, using gas/liquid flow mechanisms rather than mechanical propulsion, thereby reducing system complexity while maintaining thermal management effectiveness
2Temperature
If ventilation systems are used to cool electronic equipment, then cooling effectiveness is improved, but weight increases
Solution Approach 1:
By replacing heavy mechanical ventilation components with an ionic motion generator that uses electrostatic and electrohydrodynamic fields to move fluid, the system achieves weight reduction while maintaining cooling performance. The elimination of motors, fans, and associated mechanical structures directly addresses the weight issue
3Productivity
If corona discharge is utilized for cooling, then cooling efficiency is improved, but harmful effects are introduced
Solution Approach 1:
The patent converts the typically harmful corona discharge phenomenon into a beneficial cooling mechanism. By controlling the ionic discharge between electrodes in the fluid pathway, the system generates ionic wind that drives fluid flow for cooling purposes, transforming what is normally considered a detrimental effect into the primary cooling mechanism
Solution Approach 2:
The patent modifies the electrical parameters (voltage, current, electrode configuration) to control the corona discharge characteristics. By optimizing these parameters, the system achieves effective cooling through ionic wind generation while minimizing harmful effects such as excessive ozone production or electrical interference, thus resolving the contradiction between cooling efficiency and harmful effects
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
Efficient cooling of electronic equipment is achieved without additional weight or complexity, leveraging corona discharge energy to enhance fluid flow and heat dissipation.
Implementation Method 1
The anode and cathode are positioned along a fluid pathway so that the ionic discharge generates movement of the fluid along the pathway
Implementation Method 2
the fluid pathway contains air and the flow of ions generates ionic wind
Implementation Method 3
an ionic motion generator with an anode and a cathode that generate a discharge and flow of ions in a common direction
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A thermal management system includes an ionic motion generator to direct fluid flow towards a heated component (e.g., equipment to be cooled or a heatsink mounted thereat). In certain systems, the fluid is directed through a conduit arrangement. In certain systems, the fluid is directed past the heated component to a heat exchanger. Certain types of thermal management systems have no moving components to create the fluid flow.