Immersion Cooling Pump Return for High-Power Component Flow
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Solution Overview
Problem
Conventional Information Handling System (IHS) immersion cooling methods lack control over fluid flow to individual components, leading to cooling limitations, especially in fully populated tanks, where bulk flow rates determine cooling efficiency without directed flow to high-power components like CPUs and GPUs.
Innovation Solution
Implementing a pump return connection system that connects the immersion cooling system pump's suction side to high-power components, such as CPUs and GPUs, to enhance fluid flow directly through these components, using a cold plate or ducted heatsink, thereby increasing cooling efficiency and balancing fluid flow across the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If bulk flow cooling is used in fully populated tanks, then cooling coverage is provided to all components, but cooling efficiency for high-power components is insufficient
Solution Approach 1:
The patent implements directed flow channels that deliver higher fluid flow rates specifically to high-power components (CPU, GPU) while maintaining bulk flow cooling for other components. This local quality differentiation ensures that components with higher heat dissipation requirements receive proportionally more cooling capacity, resolving the contradiction between overall cooling coverage and targeted cooling efficiency.
Solution Approach 2:
The cooling system is segmented into multiple flow paths: a bulk flow path for general cooling and directed flow paths for high-power components. The directed flow channels are strategically positioned to intercept and redirect fluid flow specifically to components requiring enhanced cooling, thereby segmenting the cooling resource allocation to match heat generation patterns.
2Temperature
If higher bulk flow rates are used, then overall cooling capacity increases, but fluid flow balance across components becomes difficult to control
Solution Approach 1:
Directed flow channels act as intermediary structures that mediate between the bulk flow source and individual components. These channels passively regulate and distribute fluid flow based on thermal demand and flow resistance characteristics, eliminating the need for active flow control mechanisms while maintaining balanced cooling across all components.
3Device complexity
If conventional immersion cooling is used, then air-cooling infrastructure is eliminated, but preheat issues occur in fully populated tanks
Solution Approach 1:
The system pre-cools the immersion fluid by directing flow through components with lower thermal demands before the fluid reaches high-power components. This preliminary cooling action ensures that the fluid arriving at CPU and GPU components is at an optimal temperature, preventing preheat issues even in fully populated tanks.
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 approach significantly enhances cooling capabilities for high-power components, allows for higher power usage in immersion cooling, and balances fluid flow within the tank, eliminating preheat issues and improving overall system cooling efficiency.
Implementation Method 1
The IHS component cooling apparatus flow passage housing may be a cold plate or a ducted heatsink disposed on, or about, the IHS component(s) of the IHS to be cooled by the immersion fluid
Implementation Method 2
These systems are replaced with one or more low speed liquid circulation pumps, a heat exchanger, and/or the like
Data Source
AI summary
Information handling system (IHS) component immersion cooling systems and methods employ an apparatus having an IHS component immersion cooling flow passage housing disposed at (a) IHS component(s) of an IHS disposed in an immersion cooling tank. The IHS component immersion cooling flow passage housing has an immersion fluid inlet open to immersion fluid within tank and an immersion fluid outlet connected to a return line of an immersion fluid pump. The IHS component cooling apparatus flow passage housing may be a cold plate or a ducted heatsink disposed on, or about, the IHS component(s) of the IHS disposed in the immersion cooling tank. The immersion fluid pump may be the pump that also circulates the immersion fluid within the tank. The tank may include a manifold in fluid flow communication with the pump. This manifold may receive a plurality of return lines, each from an IHS component cooling apparatus.