Sealed Liquid Cooling Box for Edge Server Heat Dissipation
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Solution Overview
Problem
Conventional cooling solutions for edge servers, such as full air cooling and two-phase liquid cooling, fail to provide a stable and reliable environment due to high noise, low heat flux density, sealing issues, and leakage problems, making it challenging to maintain edge servers in harsh environments like high temperatures and high humidity.
Innovation Solution
A liquid cooling seal box with a sealed heat conduction box body containing an insulating liquid that vaporizes and condenses to efficiently absorb and dissipate heat, combined with a cold plate and air-tight joints, ensuring reliable operation and reducing maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional air cooling is used, then the cooling system is simple to implement, but the noise level is high and heat flux density is low
Solution Approach 1:
The patent employs liquid cooling technology, using cooling liquid circulation through cold plates and heat exchangers to replace air cooling. This hydraulic approach enables efficient heat removal with lower noise levels and higher heat flux density capacity, directly addressing the limitations of conventional air cooling systems.
Solution Approach 2:
The patent utilizes two-phase liquid cooling where the cooling liquid undergoes phase transitions (evaporation and condensation) in the heat exchanger. This phase change mechanism dramatically increases heat flux density compared to conventional air cooling, while the enclosed system design reduces noise from fans and airflow.
2Use of energy by moving object
If conventional two-phase liquid cooling is used, then heat exchange efficiency is improved, but sealing performance is insufficient and liquid loss rate is high
Solution Approach 1:
The patent extracts the two-phase cooling process into a sealed, self-contained system where the working liquid is enclosed within the server chassis. This extraction prevents liquid loss through evaporation or leakage, maintaining high heat exchange efficiency while improving sealing performance and reliability.
Solution Approach 2:
The patent employs sealed enclosures and gasket systems to contain the two-phase cooling liquid. These flexible sealing structures maintain integrity under thermal expansion and contraction, preventing liquid loss while allowing the system to maintain high heat exchange efficiency through proper thermal contact.
3Temperature
If conventional cold plate is used, then cooling capability is provided, but leakage problems occur and reliability is low
Solution Approach 1:
The patent uses a closed-loop liquid cooling system with sealed connections and pressure-balanced design. This hydraulic approach eliminates leakage problems by maintaining proper pressure differentials and using leak-resistant fittings, while preserving the cold plate's effective cooling capability through reliable liquid circulation.
Solution Approach 2:
The patent incorporates safety margins in the system design, including expansion chambers and pressure relief mechanisms, to prevent leakage before it occurs. These preemptive design features accommodate thermal expansion and pressure variations, maintaining reliability while ensuring continuous cooling capability.
4Volume of stationary object
If edge server volume is reduced, then space utilization is improved, but cooling system accommodation becomes difficult
Solution Approach 1:
The patent integrates the cooling system components directly into the server chassis structure, merging the cold plates, heat exchangers, and fluid channels with the mechanical housing. This integration eliminates separate cooling system volumes, reducing overall server size while maintaining effective cooling through compact, multi-functional design elements.
Solution Approach 2:
The patent employs nested cooling channels within the cold plate structure and heat exchanger assemblies. This nesting approach allows complex cooling pathways to be contained within minimal external dimensions, accommodating high heat flux densities in a compact volume that integrates seamlessly with the server form factor.
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 solution provides a stable and reliable running environment for edge servers by enhancing heat exchange efficiency, reducing noise, and preventing leakage, while supporting high heat flux densities and harsh conditions, thus ensuring prolonged server operation.
Implementation Method 1
the insulating liquid absorbs heat of the heating device and vaporizes
Implementation Method 2
vaporized steam rises to the top of the inner cavity of the heat conduction box body to be cooled and liquefied
Implementation Method 3
a sealed heat conduction box body
Data Source
AI summary
The present disclosure provides a liquid cooling seal box, a box cover thereof, and an in-vehicle cooling system. The liquid cooling seal box includes a sealed heat conduction box body, an inner cavity of the heat conduction box body includes a heating device and an insulating liquid in which the heating device is immersed, the insulating liquid absorbs heat of the heating device and vaporizes, vaporized steam rises to the top of the inner cavity of the heat conduction box body to be cooled and liquefied, and a liquefied insulating liquid falls back into the insulating liquid at the bottom of the inner cavity. The liquid cooling seal box of the present disclosure resolves problems of reliability, harsh environment, balance of volume and computation power, etc., is suitable for an in-vehicle system, and may implement stable and reliable running of a server in an in-vehicle environment.