Liquid Cooling Junction Leak Detection With Absorbent Containment

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Solution Overview

Problem

Traditional air-cooling methods are inadequate for cooling high-performance semiconductor chips, leading to the integration of liquid cooling systems, which are prone to leaks that can cause electrical shorts due to conductive coolant, and existing leak detection methods are cumbersome and lack precision in identifying the source of leaks.

Innovation Solution

Implementing chassis floor designs with liquid detection sensors, absorbent layers, touch-sensitive mats, and leak detection devices integrated with tubing and cold plates to accurately detect and contain leaks, providing precise location information and preventing electrical shorts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If liquid cooling systems are integrated into high-performance computing systems, then cooling effectiveness is improved, but risk of electrical shorts from leaks increases

Engineering Contradiction:

Improvecooling effectivenessVSAvoidelectrical short risk

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

An absorbent material layer is introduced as an intermediary between the liquid cooling system components and electrical components. This layer absorbs leaked coolant before it can reach electrical components, preventing electrical shorts while maintaining the liquid cooling system's effectiveness

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The harmful effect of leaked coolant is converted into a beneficial detection signal. The absorbent material changes its dielectric properties when saturated with coolant, creating a detectable signal that allows for early leak detection and response before damage occurs

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If traditional leak detection methods (rope with exposed wires) are used, then leak detection capability is provided, but device complexity and ease of operation deteriorate

Engineering Contradiction:

Improveleak detection capabilityVSAvoiddetection system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The leak detection functionality is merged with the existing chassis floor structure. The absorbent material is integrated into the chassis floor or panel, eliminating the need for separate detection ropes or cables and simplifying the overall system

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The absorbent material serves dual functions: it contains leaked coolant (absorbing and retaining it) and simultaneously provides the detection signal through its dielectric property changes. This self-service capability eliminates the need for additional detection mechanisms

Inventive Principle:

Principle #25Self-service

3Reliability

If traditional leak detection methods (rope with exposed wires) are used, then leak detection is achieved, but measurement precision of leak location deteriorates

Engineering Contradiction:

Improveleak detection capabilityVSAvoidleak location precision

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The chassis floor or panel is divided into multiple detection zones, each with its own absorbent material section. When a leak occurs, the specific zone that detects the coolant provides precise location information, enabling targeted response

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the chassis floor are equipped with absorbent material having different dielectric properties or configured in different patterns. This allows the detection system to identify the specific location of a leak based on which region's properties change, providing precise spatial information

Inventive Principle:

Principle #3Local quality

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 proposed solutions effectively detect and contain leaks in liquid cooling systems, preventing damage to electrical components by accurately identifying the source of leaks and minimizing the spread of conductive coolant, enhancing safety and reliability.

Implementation Method 1

an absorbent layer configured to absorb and retain the leaked liquid coolant

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 2

a liquid detection sensor that detects the presence of the leaked liquid coolant

Methodology Applied

Scientific EffectElectrical conductivity: Conduction (electrical)

Data Source

PatentUS12442712B2Liquid cooling system leak detection improvements

Publication Date: 2025.10.14 INTEL CORP

AI summary

An apparatus is described. The apparatus includes a cover to enclose a junction between respective ends of first and second fluidic conduits. The first and second fluidic conduits transport a coolant fluid within an electronic system. The apparatus also includes a leak detection device to be located within a region that is enclosed by the cover when the junction is enclosed by the cover. The leak detection device is to detect a leak of the coolant fluid at the junction when the junction is enclosed by the cover. The first and second fluidic conduits extend outside the cover when the junction is enclosed by the cover. Another apparatus is also described. The other apparatus includes a leak detection device to detect a leak of coolant fluid from a specific component or junction in a liquid cooling system of an electronic system.