Individual Server Cabinet Cooling With Gravity-Assisted Fluid Flow

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Solution Overview

Problem

Existing server cooling methods, such as air conditioning and liquid cooling with fiber limitations, are inefficient and costly, leading to high temperatures and reduced server efficiency.

Innovation Solution

A system utilizing a closed loop fluid circulation with a centrifuge pump and gravity-assisted fluid flow through envelopes and daggers to cool individual servers, incorporating heat sinks and temperature-controlled fluid management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If air conditioning and fans are used to cool server rooms, then the overall room temperature is reduced, but the cooling is costly, requires special equipment, and may not sufficiently lower the temperature at the server

Engineering Contradiction:
Improveserver temperatureVSAvoidcooling equipment complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The cooling system is segmented into individual server-level units rather than a centralized room-level system. Each server has its own cooling apparatus with a reservoir, pump, and heat exchange components, allowing targeted cooling where needed without requiring complex room-wide air conditioning infrastructure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cooling function is extracted from the server itself and implemented as a separate, integrated cooling apparatus. This external cooling system uses a fluid circulation loop with reservoirs and pumps, eliminating the need for complex internal server cooling mechanisms while providing sufficient temperature control.

Inventive Principle:
Principle #2Taking out (Extraction)

2Temperature

If liquid cooling is used to cool server cabinets, then cooling efficiency is improved, but fiber connections cannot be sustained, thus limiting bandwidth and connectivity

Engineering Contradiction:
Improveserver temperatureVSAvoidfiber connection capability
Core Design Contradiction:
TemperatureVSAdaptability or versatility

Solution Approach 1:

The cooling system applies liquid cooling locally at the server component level through直接接触 of the fluid with heated surfaces, rather than attempting to cool entire cabinets. This localized approach allows fiber optic connections to remain dry and functional while still providing efficient heat removal where needed.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The cooling apparatus is segmented into discrete components including individual reservoirs, pumps, and heat exchange elements that can be positioned and configured independently. This segmentation allows the cooling fluid to be contained in specific zones away from fiber connection points, maintaining both cooling efficiency and fiber connectivity.

Inventive Principle:
Principle #1Segmentation

3Temperature

If traditional cooling methods are used, then server rooms can be cooled, but energy consumption increases and server efficiency decreases

Engineering Contradiction:
Improveserver temperatureVSAvoidenergy consumption
Core Design Contradiction:
TemperatureVSUse of energy by moving object

Solution Approach 1:

The cooling system uses passive heat exchange principles where the fluid naturally circulates from the server components through heat exchange surfaces to reservoirs, utilizing temperature differentials and gravity to drive flow. This self-service approach minimizes the energy required for pumping and circulation compared to active mechanical cooling systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system converts the harmful heat generated by servers into a useful driving force for fluid circulation. The temperature difference between hot server components and cooler reservoirs creates natural convection currents that drive the cooling fluid flow, turning waste heat into the motive force for the cooling system.

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

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

Effectively maintains consistent server temperatures, reduces energy consumption, and allows for fiber connectivity while minimizing equipment costs and environmental impact.

Implementation Method 1

a dielectric fluid capable of transferring heat from the dagger and releasing the heat downstream of the envelope

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 2

a heat sink is disposed between the envelope and the second tank for removing heat from the liquid

Methodology Applied
Scientific EffectHeat sink: Heat Sink

Implementation Method 3

The pump is a centrifuge pump, the fluid cascading under the force of gravity form the first tank through the envelope and dagger to the second tank

Methodology Applied
Scientific EffectCentrifugal pumping: Centrifuge

Implementation Method 4

the fluid cascading under the force of gravity form the first tank through the envelope and dagger to the second tank

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS20250318084A1A system and method for cooling individual servers within a server cabinet
Publication Date: 2025.10.09 LIBERATION TECHNOLOGY SERVICES INC
  • US20250318084A1 patent drawing
  • US20250318084A1 patent drawing
  • US20250318084A1 patent drawing

AI summary

A system for cooling individual servers in a cabinet has a cabinet having at least one shelf. An envelope is disposed on the at least one shelf. A dagger receiving a server therein is disposed in the envelope A first tank contains a fluid is disposed in the cabinet and is in fluid communication with the envelope. A second tank for containing the fluid is disposed in the cabinet and is in fluid communication with the envelope. The envelope is disposed between the first tank and the second tank; the fluid flowing from the first tank through the envelope to the second tank as a function of gravity. A pump transports the fluid from the second tank to the first tank.