Liquid Cooling Fin Structure With Recessed Top Plate Flow Paths
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Solution Overview
Problem
The provision of a gap between fins and a liquid cooling jacket can lead to reduced refrigerant flow and decreased cooling performance, and the fins may deform or fail to fit due to assembly tolerance issues.
Innovation Solution
A heat dissipation member with a plate-shaped base and fin groups, featuring top plate portions with recessed portions and slits to enhance refrigerant flow and improve cooling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gap is provided between the fin and the liquid cooling jacket to prevent deformation and accommodate tolerance variations, then reliability is improved, but cooling performance deteriorates due to reduced refrigerant flow between fins
Solution Approach 1:
The top plate portion is segmented into multiple first recessed portions that are arranged side by side in the first direction. These recessed portions divide the gap space into multiple sub-gaps, allowing refrigerant to flow through multiple pathways between the fin and liquid cooling jacket, thereby maintaining cooling performance while preserving the necessary gap for reliability
Solution Approach 2:
The first recessed portions extend in the third direction (depth direction) to create a three-dimensional structure within the gap. This dimensional approach increases the effective surface area for heat dissipation and creates multiple flow channels for the refrigerant, transforming a simple gap into a complex flow management structure that addresses both reliability and cooling performance
2Reliability
If a large amount of refrigerant flows in the gap between the top plate portion and liquid cooling jacket, then the gap serves its structural purpose, but the inflow amount of refrigerant between the fins decreases, lowering cooling ability
Solution Approach 1:
The top plate portion has different local structures: the first recessed portions create specific flow channels with optimized geometry. Each recessed portion is designed with specific dimensions and spacing to control local refrigerant flow characteristics, ensuring that refrigerant is distributed appropriately between the gap and the fin regions based on local cooling requirements
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 configuration enhances refrigerant flow and cooling efficiency by generating turbulent flow and reducing pressure loss, thereby improving the cooling performance of semiconductor devices.
Implementation Method 1
When a refrigerant flows through the flow path, heat of a heating element moves to the refrigerant
Implementation Method 2
one or a plurality of fin groups arranged side by side in the first direction, the fin group including a plurality of fins projecting from the base portion
Implementation Method 3
heat of a heating element moves to the refrigerant
Data Source
AI summary
A heat dissipation member to be installed in a liquid cooling jacket includes a base extending in a first direction of a refrigerant flow and a second direction, and having a thickness in a third direction, one or more fin groups arranged side by side in the first direction, the fin group including fins projecting from the base to one side in the third direction and arranged in the second direction, and a top plate at an end on one side in the third direction of the fin. A gap in the third direction is between the top plate and a top surface of the liquid cooling jacket. The top plate has first recessed portions recessed from a surface on one side in the third direction of the top plate to another side in the third direction and arranged side by side in the first direction.