Multi-Card Heatsink Architecture for Embedded Computing Cooling
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Solution Overview
Problem
Existing cooling systems for embedded computing systems, particularly in defense and military applications, are inefficient in dissipating heat generated by powered integrated circuits and other electronic components.
Innovation Solution
A multi-card subsystem with a centralized heatsink and modular design that allows multiple circuit cards to share a common heatsink, enhancing cooling efficiency through direct card-edge and module-frame contact, and optional heat pipe configurations for improved thermal transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional cooling systems are used with individual cooling solutions for each circuit card, then each card can be cooled independently, but the system complexity and power consumption increase significantly
Solution Approach 1:
The patent combines multiple individual cooling solutions into a single centralized heatsink that serves multiple circuit cards simultaneously. The heatsink includes a common base plate with multiple heat dissipation surfaces that contact different cards, merging what would otherwise be separate cooling systems into one integrated unit. This reduces overall system complexity while maintaining effective heat dissipation for each card.
Solution Approach 2:
The centralized heatsink is designed with multi-functional capability to cool different types of circuit cards with varying thermal requirements. The heatsink structure includes adjustable mounting mechanisms and multiple contact surfaces that can accommodate various card configurations, making a single cooling system serve multiple functions instead of requiring dedicated cooling for each card type.
2Temperature
If forced convection cooling is implemented to improve heat dissipation, then cooling efficiency increases, but power consumption for airflow increases
Solution Approach 1:
The heatsink is designed with locally optimized heat dissipation surfaces positioned at specific locations to maximize natural convection efficiency. Each heat dissipation surface is tailored to the thermal characteristics of the corresponding circuit card contact point, creating localized thermal management zones that enhance natural cooling without requiring forced airflow across the entire system.
Solution Approach 2:
The cooling system is designed to utilize natural convection currents generated by the heat itself, eliminating the need for external fans or forced airflow mechanisms. The heatsink structure promotes self-sustaining thermal convection patterns where heated air naturally rises and draws in cooler air, creating a self-service cooling mechanism that consumes no additional power.
3Device complexity
If a centralized heatsink design is used to reduce system complexity, then cooling efficiency improves and power consumption decreases, but the ability to cool individual cards independently is reduced
Solution Approach 1:
While using a centralized heatsink structure, the design segments the heat dissipation function into multiple independent surfaces or zones on the heatsink base plate. Each segment can be independently adjusted or configured to match the thermal requirements of specific circuit cards, allowing individual card cooling control within the unified centralized structure.
Solution Approach 2:
The centralized heatsink incorporates adjustable or reconfigurable mounting mechanisms that allow the heat dissipation surfaces to be dynamically positioned or configured based on the specific thermal requirements of different circuit cards. This dynamic adaptability enables the single heatsink to provide customized cooling solutions for each card while maintaining overall system simplicity.
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 solution provides enhanced thermal performance, reduces power consumption for airflow, allows for scalable and reconfigurable systems, and offers a cost-effective and reliable cooling solution suitable for high-processing applications.
Implementation Method 1
conducting heat away from the electronics through the circuit board and/or rail structure
Implementation Method 2
dissipating heat from the rail structure through natural or forced convection
Implementation Method 3
dissipating heat from the rail structure through natural or forced convection
Implementation Method 4
optional heat pipe configurations for improved thermal transfer
Data Source
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AI summary
A mounting frame apparatus is provided for embedding cards within an electronics system and includes a multi-card swappable subsystem. The apparatus further includes a chassis for containing the multi-card swappable subsystem. One or more heatsinks are used for cooling cards disposed in the four-card swappable subsystem.