Propeller-Driven Single-Phase Immersion Cooling for High-Power Electronics

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Solution Overview

Problem

Existing single-phase immersion cooling systems rely on natural convection, which is inadequate for cooling the increasing heat demands of modern computer systems, particularly servers.

Innovation Solution

A single-phase immersion cooling system with a rotating propeller that creates a driven flow path within a component area, enhancing coolant circulation speed and contact with heat-generating electronic devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If natural convection is used for cooling, then the system structure is simple, but the cooling capacity is insufficient for high-power components

Engineering Contradiction:
Improvesystem structureVSAvoidcooling capacity
Core Design Contradiction:
Device complexityVSTemperature

Solution Approach 1:

The patent replaces natural convection (passive thermal system) with forced convection using a rotating propeller (mechanical system). The propeller actively drives coolant flow through the component area, transforming the cooling mechanism from passive to active, thereby significantly increasing cooling capacity for high-power electronic devices.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs fluid dynamics principles by using a rotating propeller to create forced convection current in the liquid coolant. The propeller generates hydraulic flow that actively circulates coolant through the component area, enhancing heat transfer efficiency beyond natural convection capabilities.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Temperature

If coolant circulation speed is increased, then cooling capacity is improved, but energy consumption increases

Engineering Contradiction:
Improvecooling capacityVSAvoidenergy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by creating high-velocity coolant flow specifically in the component area where heat-generating electronic devices are located, while maintaining lower flow speeds in other regions. The rotating propeller generates localized forced convection where needed, optimizing cooling performance while minimizing overall energy consumption.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent implements partial action by applying forced convection only in the specific component area requiring enhanced cooling, rather than throughout the entire coolant system. The propeller creates targeted high-speed flow in the component area, providing sufficient cooling capacity without the energy cost of system-wide high-velocity circulation.

Inventive Principle:
Principle #16Partial or excessive action

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 system achieves improved cooling capacity by forcing coolant to circulate at faster speeds, effectively managing the heat generated by high-power components.

Implementation Method 1

The rotating propeller is mounted within the immersion cooling tank, and causes a driven flow path in the component area. The driven flow path is configured to cause contact between the coolant in the driven flow path and the heat-generating electronic device when the heat-generating electronic device is received within the component area. The coolant in the driven flow path circulates at a faster speed than the coolant in the chamber path.

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Implementation Method 2

the coolant in the driven flow path circulates at a faster speed than the coolant in the chamber path

Methodology Applied
Scientific EffectThermal Conduction: Conduction (thermal)

Data Source

PatentUS20250220852A1Force Convection Driven By Propeller Applied In Single-Phase Immersion Cooling
Publication Date: 2025.07.03 QUANTA COMPUTER INC
  • US20250220852A1 patent drawing
  • US20250220852A1 patent drawing
  • US20250220852A1 patent drawing

AI summary

A single-phase immersion cooling system includes an immersion cooling tank having a component area, which is separate from a main chamber and is configured to receive a heat-generating electronic device. A coolant circulates along a flow path, in a chamber path through the main chamber and a component path through the component area. A rotating propeller is mounted within the immersion cooling tank, causing a driven flow path in the component area. The driven flow path is configured to cause contact between the coolant in the driven flow path and the heat-generating electronic device when the heat-generating electronic device is received within the component area. The coolant in the driven flow path circulates at a faster speed than the coolant in the chamber path.