Phase-Change Liquid Cooling with Jet Impingement to Prevent Cavitation
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Solution Overview
Problem
Existing phase-change working media in phase-change immersion cooling systems have low critical heat flux and are prone to local liquid shortages, leading to limited heat dissipation capability and potential cavitation issues.
Innovation Solution
A computing device with separate accommodation cavities for different coolant temperatures and a power component to jet coolant at high speed, creating a supercooling environment that avoids cavitation and enhances heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If passive phase-change immersion cooling is used, then the system structure is simple, but the critical heat flux is low and local liquid shortage occurs easily
Solution Approach 1:
The patent transforms the passive cooling system into an active dynamic system by introducing a pump and jet component. The pump actively circulates coolant and the jet component directs high-speed coolant flow onto the heating element, enabling dynamic control of cooling performance and preventing local liquid shortage by maintaining continuous forced convection.
Solution Approach 2:
The patent applies hydraulic principles by using a pump to circulate liquid coolant through a closed loop system and a jet component to deliver high-velocity coolant flow to the heating element. This hydraulic active cooling mechanism overcomes the limitations of passive phase-change cooling by providing controlled, high-flow-rate coolant delivery that maintains critical heat flux.
2Device complexity
If single accommodation cavity is used, then the device structure is simple, but cavitation may occur on the power component
Solution Approach 1:
The patent divides the single accommodation cavity into two separate cavities: a first accommodation cavity for the power component and a second accommodation cavity for the heating element. This segmentation isolates the power component from the high-temperature, high-pressure coolant environment, preventing cavitation while allowing the heating element to receive intensive cooling.
Solution Approach 2:
The patent introduces a partition plate as an intermediary structure between the two accommodation cavities. This partition plate physically separates the coolant flow paths, allowing the power component to operate in a protected, lower-pressure environment while the heating element accesses the high-flow-rate coolant stream without direct exposure to cavitation risks.
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 significantly improves critical heat flux and ensures reliable heat dissipation for high heat flux components by maintaining coolant supercooling and preventing cavitation, thereby enhancing the efficiency and reliability of the cooling system.
Implementation Method 1
a power component... configured to pump the first coolant into the jet component for jetting to the heating element through the jet component
Implementation Method 2
the phase-change working medium may boil under a normal pressure and near a normal temperature, and can cool the heating element by absorbing heat through evaporation
Implementation Method 3
a phase-change working medium... the phase-change working medium may boil under a normal pressure and near a normal temperature
Implementation Method 4
the first accommodation cavity is configured to accommodate a first coolant, the second accommodation cavity is configured to accommodate a heating element and a second coolant, and a temperature of the second coolant is higher than a temperature of the first coolant
Data Source
AI summary
This application provides a computing device based on a phase-change liquid cooling technology, including a body, a jet component, and a power component. Space in the body is divided into a first accommodation cavity and a second accommodation cavity through a partition plate. The first accommodation cavity is configured to accommodate a first coolant, the second accommodation cavity is configured to accommodate a heating element and a second coolant, and a temperature of the second coolant is higher than a temperature of the first coolant. The body is provided with a liquid refill opening communicating with the first accommodation cavity and an exhaust vent communicating with the second accommodation cavity. The power component is connected to the jet component, and is configured to pump the first coolant to the heating element through the jet component.