Water Block Jet Cooling Under Negative Pressure
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Solution Overview
Problem
Liquid cooling systems for computing devices face challenges such as reduced heat transfer due to boundary layers and leakage management, particularly with air leaking into the system instead of coolant leaking out.
Innovation Solution
A liquid cooling system under negative pressure, utilizing flexible PVC lines and pumps to maintain pressure, combined with jet holes in the water block to induce turbulence and cavitation, preventing air leakage by ensuring coolant remains inside the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If liquid cooling is used to take advantage of large heat capacity, then cooling efficiency is improved, but boundary layers reduce heat transfer effectiveness
Solution Approach 1:
The patent applies jet flows to induce turbulence and disrupt boundary layers at the liquid-coolant interface. The jets create mechanical disturbance that prevents the formation of stable boundary layers, thereby enhancing heat transfer from the component to the coolant.
Solution Approach 2:
The patent changes the flow regime parameter from laminar to turbulent by introducing jets. This parameter change disrupts the boundary layer structure and significantly improves convective heat transfer coefficients at the interface between the coolant and the component being cooled.
2Reliability
If liquid cooling system operates under negative pressure to prevent coolant leakage, then reliability is improved, but air may leak into the system
Solution Approach 1:
The patent inverts the conventional approach by operating the liquid cooling system under negative pressure instead of positive pressure. This inversion ensures that any leaks will draw air into the system rather than allowing coolant to escape, thereby maintaining reliability while managing the trade-off of potential air ingress.
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
Enhances heat transfer efficiency by disrupting boundary layers and effectively manages leaks, maintaining coolant within the system to prevent air ingress and ensure effective cooling.
Implementation Method 1
jets may be used to induce high turbulence and/or cavitation, increasing the heat transfer to the liquid
Implementation Method 2
jets may be used to induce high turbulence and/or cavitation, increasing the heat transfer to the liquid
Implementation Method 3
Liquid cooling can take advantage of the large heat capacity of water and other liquids relative to air
Implementation Method 4
the liquid cooling system is under negative pressure, resulting in air leaking into the liquid cooling system instead of the coolant leaking out
Data Source
AI summary
Techniques for liquid cooling systems are disclosed. In one embodiment, jet holes in a water block create jets of liquid coolant to be applied to a surface to be cooled, such as a surface of an integrated circuit component. The jets of liquid coolant may disrupt surface boundary layers through turbulence and/or microcavitation, increasing the cooling effect of the liquid coolant. In the illustrative embodiment, negative pressure is applied to a coolant loop of the liquid coolant, which provides several advantages such as being resistant to leaks. In another embodiments, jet holes in a water block create jets of liquid coolant that are directed toward other jets of liquid coolant, which also increases the cooling effect of the liquid coolant.