Magnetic Pumped Thermal Interface for Sealed Electronics Cooling

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Solution Overview

Problem

High-performance computing devices generate significant heat, requiring effective thermal management to prevent component damage, and existing methods may be inefficient or prone to mechanical failures.

Innovation Solution

A thermal management system utilizing a magnetic pump with a magnet and electrodes to induce an electrical current in an electrically conductive working fluid, generating a Lorentz force that moves the fluid through a sealed conduit for heat exhaust, avoiding mechanical pumping and potential seal failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a magnetic pump is used to move the working fluid, then the operational lifetime is enhanced and contamination is prevented, but the device complexity increases due to the addition of magnets and electrodes

Engineering Contradiction:

Improveoperational lifetimeVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces mechanical pumping systems with a magnetic pump that uses magnetic fields and electrical currents to move the working fluid. This substitution eliminates mechanical wear and seal failures, thereby enhancing operational lifetime and reliability while preventing contamination through the sealed conduit system.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic pump acts as an intermediary mechanism between the heat source and heat sink, using magnetic and electrical fields to transfer the working fluid without direct mechanical contact. This intermediary approach maintains system sealing integrity while achieving fluid transport.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a sealed conduit is used to move the working fluid, then contamination is prevented, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvecontamination preventionVSAvoidmanufacturing precision

Core Design Contradiction:

Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

By replacing mechanical pumping with magnetic pumping, the system achieves sealing without requiring complex mechanical seals or moving parts that would compromise contamination prevention. The magnetic field acts through the sealed conduit without requiring physical penetration, maintaining sealing integrity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If magnetic pumping is used instead of mechanical pumping, then mechanical failures are avoided, but the use of energy increases due to electrical current requirements

Engineering Contradiction:

Improvemechanical failure preventionVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent substitutes mechanical pumping energy with electromagnetic energy. While this eliminates mechanical wear and failure modes, it introduces electrical energy consumption for generating the magnetic fields and driving currents through the working fluid. The trade-off exchanges mechanical reliability for electrical energy usage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 effectively manages heat by moving the working fluid through a sealed conduit, enhancing operational lifetime and efficiency while preventing contamination, thus protecting components from damage.

Implementation Method 1

applying an electrical current to the electrically conductive working fluid with a magnetic pump in a pumping region; generating a magnetic field in the electrically conductive working fluid induced by applied electrical current in the pumping region; generating a resultant force on the electrically conductive working fluid in response to the induced magnetic field interacting with a magnetic field of external permanent magnet or electromagnet

Methodology Applied

Scientific EffectLorentz force: Lorentz Force

Implementation Method 2

a magnetic pump configured to apply a magnetic field and an electrical current to the electrically conductive working fluid

Methodology Applied

Scientific EffectMagnetohydrodynamic effect: Magnetohydrodynamic Effect

Implementation Method 3

a thermal interface configured to receive heat from a heat-generating electronic component; an electrically conductive working fluid in contact with the thermal interface to receive heat from the thermal interface

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 4

a heat exchanger in thermal communication with the electrically conductive working fluid to exhaust heat from the electrically conductive working fluid; a heat exchanger to exhaust heat from the electrically conductive working fluid to an immersion cooling fluid

Methodology Applied

Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS12557243B2Systems and methods for magnetic pumping in thermal management devices

Publication Date: 2026.02.17 MICROSOFT TECHNOLOGY LICENSING LLC

AI summary

A device may include a thermal interface configured to receive heat from a heat-generating electronic component. A device may include an electrically conductive working fluid in contact with the thermal interface to receive heat from the thermal interface. A device may include a magnetic pump configured to apply a magnetic field and an electrical current to the electrically conductive working fluid. A device may include a heat exchanger in thermal communication with the electrically conductive working fluid to exhaust heat from the electrically conductive working fluid.