Single-Node Immersion Cooling Cabinet With Pluggable Server Bays

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Solution Overview

Problem

Existing fully immersed liquid cooling technologies for servers in large horizontal cabinets face issues such as excessive cooling liquid consumption, poor immersion effect due to unoccupied slots, cumbersome operation, and high maintenance costs due to time-consuming draining and lifting processes.

Innovation Solution

A liquid cooling server cabinet with pluggable assemblies and independent cooling units for single-node servers, allowing easy plug-in and plug-out installation, reducing the need for full immersion and minimizing liquid consumption, and enabling efficient, independent cooling without affecting other servers during maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If fully immersed liquid cooling technology is used in medium to large horizontal cabinets, then server cooling effectiveness is improved, but cooling liquid consumption increases excessively

Engineering Contradiction:
Improvecooling effectivenessVSAvoidcooling liquid consumption
Core Design Contradiction:
TemperatureVSQuantity of substance

Solution Approach 1:

The cabinet is divided into multiple independent cooling zones, each with its own liquid cooling unit and cooling liquid supply system. This segmentation allows each zone to be cooled independently, reducing the total cooling liquid volume needed compared to a single large immersed cooling system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different cooling methods are applied to different parts of the cabinet: fully immersed cooling is used for certain zones while other zones use alternative cooling approaches. This local differentiation optimizes cooling effectiveness while minimizing overall cooling liquid consumption.

Inventive Principle:
Principle #3Local quality

2Temperature

If fully immersed liquid cooling is implemented, then server thermal management is improved, but maintenance operation complexity increases due to draining and lifting requirements

Engineering Contradiction:
Improvethermal managementVSAvoidmaintenance operation
Core Design Contradiction:
TemperatureVSEase of operation

Solution Approach 1:

The cabinet is divided into multiple independent cooling zones with separate access mechanisms. This allows maintenance personnel to access and maintain servers in specific zones without needing to drain the entire cooling system or lift heavy servers, significantly simplifying maintenance operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Servers can be extracted from their cooling environments through dedicated access channels and mechanisms, allowing maintenance personnel to remove servers for repair without requiring complex draining and lifting operations, thus improving ease of maintenance.

Inventive Principle:
Principle #2Taking out (Extraction)

3Power

If medium to large horizontal cabinets are used for immersion cooling, then server cooling capacity is improved, but device complexity increases

Engineering Contradiction:
Improvecooling capacityVSAvoidcabinet structure
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The complex cooling system is segmented into multiple independent modules, each with its own cooling liquid supply and circulation system. This modular approach reduces the complexity of any single component while maintaining the overall cooling capacity of the entire cabinet.

Inventive Principle:
Principle #1Segmentation

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

Reduces cooling liquid demand, simplifies maintenance by eliminating the need for draining, and lowers operational costs through streamlined server handling and reduced manpower, ensuring uninterrupted operation and improved maintenance efficiency.

Implementation Method 1

the at least one liquid cooling unit is configured to communicate with the cooling cavity of the corresponding single-node server when the single-node server is mounted in the at least one pluggable portion

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Data Source

PatentEP4651655A1Liquid cooling server cabinet, and single-node immersed server system
Publication Date: 2025.11.19 INVENTEC PUDONG TECH CORPOARTION
  • EP4651655A1 patent drawingFigure 1
  • EP4651655A1 patent drawingFigure 2
  • EP4651655A1 patent drawingFigure 3

AI summary

The present disclosure relates to a liquid cooling server cabinet (12), including a cabinet body (100), a liquid cooling module (200), and a pluggable assembly (300). The cabinet body (100) is provided with a receiving cavity, and the pluggable assembly (300) is arranged in the receiving cavity. The pluggable assembly (300) includes at least one pluggable portion (310). The liquid cooling module (200) includes at least one liquid cooling unit (200a) corresponding to the at least one pluggable portion (310). The pluggable portion (310) is configured for a plugging and mounting of a single-node server (11) that defines a cooling cavity. When the pluggable portion (310) is mounted with the single-node server (11), the liquid cooling unit (200a) is communicated with the cooling cavity of the corresponding single-node server (11).