Liquid-Cooled Rack Layout for Dense Server Heat Dissipation

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Solution Overview

Problem

Existing liquid cooling systems for data processing devices fail to effectively dissipate heat due to high device density, leading to elevated operating temperatures and increased malfunction rates.

Innovation Solution

A liquid cooling apparatus with a unique rack configuration that includes first and second racks for servers and power distribution units, respectively, arranged along a horizontal direction, with spaced mounting positions and openwork structures to enhance air convection and reduce heat concentration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If data processing devices are densely packed to increase computing power, then device density and computing capability are improved, but heat dissipation efficiency deteriorates and operating temperature rises

Engineering Contradiction:
Improvecomputing powerVSAvoidoperating temperature
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The patent divides the traditional single-rack configuration into multiple independent racks (first rack, second rack, third rack) arranged in parallel. Each rack contains a subset of data processing devices, creating separate thermal zones that can be cooled independently. This segmentation reduces heat concentration in any single location and improves overall heat dissipation efficiency while maintaining high device density across the system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from a single-column vertical stacking arrangement to a multi-rack parallel arrangement that utilizes horizontal spatial distribution. By arranging racks side-by-side with spacing between them, the system creates additional thermal management dimensions, allowing cooling fluids to flow through multiple parallel paths and improving heat dissipation capacity without sacrificing computing power density.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If devices are stacked vertically to save space, then space utilization is improved, but air convection and heat dissipation are reduced

Engineering Contradiction:
Improvespace utilizationVSAvoidheat concentration
Core Design Contradiction:
Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent segments the vertically stacked devices into multiple racks distributed horizontally. Instead of one tall stack, there are several shorter racks arranged parallel to each other, creating intermediate air spaces between racks that facilitate convection currents and heat dissipation while maintaining high overall space utilization.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces cooling fluid channels and air gaps as intermediary spaces between racks and within rack structures. These intermediary spaces act as thermal pathways that mediate heat transfer from devices to the cooling system, enabling effective heat dissipation while maintaining compact vertical arrangements within each rack.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Temperature

If cooling fluid channels are added to devices, then heat dissipation capability is improved, but device complexity and water consumption increase

Engineering Contradiction:
Improveheat dissipation capabilityVSAvoiddevice complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent implements universal cooling rack structures that can accommodate multiple types of data processing devices (servers, storage devices, networking devices) with different cooling requirements. The rack-level cooling infrastructure serves as a multi-functional platform that provides thermal management for diverse device types without requiring complex device-specific cooling modifications.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces cooling racks as intermediary thermal management components between the devices and the cooling fluid supply system. Rather than embedding complex cooling channels directly in each device, the racks serve as intermediate heat exchangers that collect heat from multiple devices and transfer it to the cooling fluid, simplifying the thermal management architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 apparatus improves heat dissipation by reducing device density and promoting air convection, thereby maintaining lower operating temperatures and reducing the likelihood of hardware malfunctions.

Implementation Method 1

Water from the liquid cooling system is supplied to these flow channel plates to carry away the heat generated within the data processing device

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Implementation Method 2

Water circulate through flow channel plates

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 3

The liquid cooling apparatus and the liquid-cooled container according to the present disclosure enhance air convection within the liquid cooling cabinets

Methodology Applied
Scientific EffectAir convection: Convection

Data Source

PatentEP4679950A1Liquid cooling apparatus and liquid-cooled container
Publication Date: 2026.01.14 STRAITDEER PTE LTD
  • EP4679950A1 patent drawingFigure 1
  • EP4679950A1 patent drawingFigure 2
  • EP4679950A1 patent drawingFigure 3~4

AI summary

Disclosed are a liquid cooling apparatus and a liquid-cooled container. The liquid cooling apparatus includes a liquid cooling cabinet, a server, and a power distribution unit. The liquid cooling cabinet includes a first side panel, a top plate, a second side panel, and a base plate that are sequentially connected to form a rectangular frame. A first rack is secured within the rectangular frame, wherein the first rack includes a first rack body and a second rack body. The first rack body is abutted against an inner wall of the first side panel, and the second rack body is spaced apart from the second side panel. A plurality of first mounting positions for accommodating the servers are arranged on the first rack in a vertical direction.