Segmented Fin Heat Dissipator for Better Refrigerant Mixing
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Solution Overview
Problem
Conventional heat dissipators have limitations in cooling performance due to inefficient heat transfer and refrigerant flow management.
Innovation Solution
A heat dissipator design featuring a plate-shaped base with protruding fins arranged in a specific configuration to guide refrigerant flow, including second and third fins that enhance turbulence and mixing, and spoilers to improve cooling efficiency by reducing boundary layer growth and pressure loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional fins are used in a standard arrangement, then the structure is simple and easy to manufacture, but the cooling performance is insufficient due to inefficient heat transfer and refrigerant flow
Solution Approach 1:
The fin structure is segmented into multiple types (first fins, second fins, third fins) with different configurations and positions. This segmentation allows each fin type to perform specific functions: first fins provide basic heat dissipation, second fins extend downstream to enhance turbulence and mixing, and third fins extend upstream to improve refrigerant distribution, collectively enhancing cooling performance while maintaining manufacturability
Solution Approach 2:
Different fin configurations are applied at different locations to optimize local heat transfer characteristics. Second fins are positioned on the downstream side with extended length to create turbulence where refrigerant flow needs enhancement, while third fins are positioned on the upstream side to improve flow distribution, creating localized quality improvements that address specific flow patterns throughout the heat dissipation structure
2Productivity
If fins are arranged to guide refrigerant flow efficiently, then heat transfer improves, but pressure loss increases due to boundary layer growth and flow resistance
Solution Approach 1:
The second fins extending downstream create controlled turbulence and flow disturbance that acts as a mechanical disruption to the boundary layer. This turbulence enhances mixing between the refrigerant and fin surfaces, improving heat transfer efficiency while the distributed fin arrangement prevents excessive pressure loss by distributing flow resistance throughout the structure
Solution Approach 2:
The fin design creates dynamic flow patterns through the interaction of first, second, and third fins. The refrigerant flow is dynamically redirected and mixed as it passes through the structured arrangement, with second fins creating downstream turbulence and third fins providing upstream flow conditioning, resulting in enhanced heat transfer with managed pressure loss
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 design significantly enhances cooling performance by facilitating better heat transfer and refrigerant mixing, leading to improved temperature homogenization and reduced pressure loss, thus addressing the limitations of conventional heat dissipators.
Implementation Method 1
When a refrigerant such as water flows between adjacent fins in the plurality of fins, heat of the heating element moves to the refrigerant
Implementation Method 2
A second of the fins is provided continuously on one side in the first direction that is a downstream side of a first of the fins, and includes an end on the one side in the third direction on another side in the third direction relative to an end on the one side in the third direction of a flow path
Data Source
AI summary
A heat dissipator includes a plate-shaped base portion that extends in a first direction along a direction where a refrigerant flows and in a second direction orthogonal to the first direction and has a thickness in a third direction, and fins that protrude from the base portion to one side in the third direction, extend in the first direction, are arranged in the second direction, and guide the refrigerant. A second of the fins is provided continuously on one side in the first direction that is a downstream side of a first of the fins, and a third fin that is provided continuously on another side in the first direction of the first fin, and includes an end on the one side in the third direction on the other side in the third direction.