Boiling Plate Cone Cavities for Early Onset Liquid Cooling
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Solution Overview
Problem
Conventional cold plates in liquid cooling systems have inefficient nucleation sites that are not activated at lower boiling temperatures, leading to poor heat dissipation, especially in computing systems with smaller electronic components.
Innovation Solution
A boiling plate with multiple cone-shaped cavities on its surface, arranged in a honeycomb pattern, to enhance nucleation site activation and control boiling heat transfer, optimized by varying cavity sizes and densities based on heat flux and liquid medium properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional nucleation sites are used on cold plates, then the structure is simple and easy to manufacture, but the nucleation sites are not activated at lower boiling temperatures resulting in poor heat dissipation
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of nucleation sites from conventional flat or simple shapes to cone-shaped cavities with specific dimensions (radius 0.05-0.2mm, depth 0.1-0.5mm) and spacing (4-10 times the radius). These parameter optimizations enable the nucleation sites to activate at lower boiling temperatures, significantly improving heat dissipation efficiency while maintaining manufacturing feasibility through precision machining or laser processing
Solution Approach 2:
The patent creates a controlled porous structure on the cold plate surface through cone-shaped cavities arranged in honeycomb patterns. This porous configuration increases the surface area and provides multiple nucleation sites that facilitate bubble formation and departure, enhancing boiling heat transfer efficiency. The porous structure is achieved through precision machining, laser processing, or chemical etching techniques
2Productivity
If cone-shaped cavities with small radius are used to increase nucleation site density, then bubble formation is enhanced, but the spacing between cavities must be carefully controlled to prevent interference
Solution Approach 1:
The patent segments the cold plate surface into multiple discrete cone-shaped cavities arranged in a honeycomb pattern, with each cavity acting as an independent nucleation site. The spacing between cavities is carefully controlled at 4-10 times the cavity radius, preventing bubble interference while maximizing nucleation site density. This segmentation approach enables high bubble formation rates without requiring extremely tight manufacturing tolerances
Solution Approach 2:
The patent performs preliminary action by pre-configuring the cone-shaped cavities with optimized dimensions and spacing before operation. The cavities are designed with specific radius (0.05-0.2mm) and depth (0.1-0.5mm) parameters that pre-determine their nucleation effectiveness, allowing them to activate at lower boiling temperatures without requiring real-time adjustment during operation
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 bubble formation and heat transfer efficiency by ensuring early onset boiling, optimizing nucleation sites for improved cooling performance in computing systems.
Implementation Method 1
The second surface has multiple cone-shaped cavities including a first cone-shaped cavity and a second cone-shaped cavity... Enhances bubble formation and heat transfer efficiency by ensuring early onset boiling, optimizing nucleation sites
Implementation Method 2
In liquid cooling systems, boiling heat transfer relies on bubble formation for effective heat transfer... The present disclosure provides solutions that at least improve bubble formation in nucleation sites on cold plates
Implementation Method 3
Boiling heat transfer relies on bubble formation for effective heat transfer... hlv is latent heat
Data Source
AI summary
A boiling plate including a first surface and a second surface. The first surface provided for contacting a heated component. The second surface is opposite the first surface, and the second surface provided for contacting a liquid medium. The second surface has multiple cone-shaped cavities including a first cone-shaped cavity and a second cone-shaped cavity. A distance between an axis of the first cone-shape cavity and an axis of the second cone-shaped cavity of the multiple cone-shaped cavities are separated by a minimum spacing of four times a radius of the first cone-shaped cavity or the second cone-shaped cavity.