Textured Base Deck for Immersion Cooling
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Solution Overview
Problem
Data storage systems face challenges in maintaining a desired temperature range due to heat generation, leading to boiling dielectric liquids that create bubbles, which induce vibration and affect performance, especially in immersion cooling systems where fans are not used.
Innovation Solution
Incorporating textured surfaces on data storage device components to discourage bubble nucleation and conglomeration, promoting bubble propagation and detachment, thereby reducing vibration and enhancing cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If data storage devices are immersed in dielectric liquid for cooling, then cooling efficiency is improved, but bubble formation occurs causing vibration and performance degradation
Solution Approach 1:
The patent applies local quality by texturing only specific regions of the base deck where heat generation is highest (hot spots). The textured surface is selectively positioned adjacent to integrated circuit boards and other high-heat components, creating localized bubble-nucleation zones that redirect bubble formation away from sensitive areas. This allows the majority of the surface to remain smooth while addressing bubble issues at critical locations.
Solution Approach 2:
The patent changes the physical parameter of the surface texture by introducing microscopic roughness features with specific dimensional characteristics. The textured surface creates controlled nucleation sites that alter bubble formation parameters, causing bubbles to form at predictable locations and detach more efficiently. This parameter change transforms the surface from a bubble-generation problem into a bubble-management solution.
2Object-affected harmful factors
If textured surfaces are added to manage bubble formation, then vibration is reduced, but device complexity increases
Solution Approach 1:
The patent employs a porous or micro-textured surface structure on the base deck that creates controlled nucleation sites for bubble formation. This textured surface, which may include micropits, grooves, or other subsurface features, allows bubbles to form in a controlled manner and detach more efficiently, reducing vibration while adding minimal structural complexity.
Solution Approach 2:
The textured surface structure serves multiple functions simultaneously: it promotes bubble nucleation at controlled locations, facilitates bubble detachment, and maintains thermal contact with the dielectric liquid. This self-service approach allows the surface texture to manage bubble dynamics without requiring additional active components or complex control systems.
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 textured surfaces effectively manage bubble formation and detachment, reducing vibration-induced performance issues and improving cooling efficiency by limiting nucleation and enhancing heat transfer at the interface.
Implementation Method 1
textured surfaces to discourage bubble nucleation and conglomeration, promoting bubble propagation and detachment
Implementation Method 2
immersing a data storage device within a dielectric liquid
Implementation Method 3
heating the dielectric liquid to a boiling temperature at a point adjacent to the textured external surface
Implementation Method 4
improving cooling efficiency by limiting nucleation and enhancing heat transfer at the interface
Data Source
AI summary
A base deck for a data storage device includes a body. The body includes a bottom wall and sidewalls that create an internal cavity. The bottom wall includes a textured external surface opposite the internal cavity. The base deck can be coupled to a cover to seal the internal cavity.