Cooling Fin Slit Structure for Clog-Resistant Heat Dissipation
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Solution Overview
Problem
Conventional heat radiating members with cooling fins in water jackets face a trade-off between preventing clogging from contamination and maintaining high cooling performance, where widening the fin intervals decreases installation density and cooling efficiency.
Innovation Solution
The heat radiating member features a plate-shaped base with protruding fins having a flat plate-shaped sidewall with a slit and a bent portion, which creates a turbulent flow and increases the gap between fins to prevent clogging while maintaining high installation density and cooling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intervals between adjacent fins are widened to prevent clogging with contamination, then reliability is improved, but installation density of fins decreases resulting in deterioration of cooling performance
Solution Approach 1:
The fin structure is segmented into multiple parts: a base portion, a protruding portion with cooling function, and a sidewall with a slit. This segmentation allows the slit to act as a dedicated contamination barrier while the protruding portion maintains high fin density for cooling, resolving the contradiction between clogging prevention and cooling performance
Solution Approach 2:
The slit in the sidewall acts as an intermediary element that specifically targets contamination particles. It serves as a barrier mechanism that allows the system to maintain narrow fin intervals for high cooling performance while preventing contamination from clogging the cooling water flow path
2Productivity
If intervals between adjacent fins are narrowed to increase installation density, then cooling performance is improved, but clogging with contamination occurs more frequently
Solution Approach 1:
By segmenting the fin structure into base portion, protruding portion, and sidewall with slit, the system can achieve narrow fin intervals for high cooling performance while the slit provides dedicated contamination protection, preventing clogging even at high density
Solution Approach 2:
Different parts of the fin structure have different functions: the protruding portion is optimized for heat dissipation with narrow intervals, while the sidewall with slit is optimized for contamination prevention. This local differentiation allows simultaneous optimization of both cooling performance and clogging resistance
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
This configuration enhances cooling performance by reducing contamination clogging and increasing fin density, while also optimizing the flow to improve heat transfer efficiency.
Implementation Method 1
a bent portion disposed on at least one of the one side in the first direction and the other side in the first direction of the slit and bent in the second direction
Implementation Method 2
a plate-shaped base portion that extends in a first direction along a direction in which a refrigerant flows
Implementation Method 3
The inside of the water jacket serves as a flow path of cooling water, and a heating element is water-cooled through the fins
Data Source
AI summary
A heat radiating member includes a plate-shaped base portion and a plurality of fins protruding from the base portion toward one side. Assuming that a downstream side where the refrigerant flows is one side in the first direction, the fin has a flat plate-shaped sidewall. The sidewall is provided with a slit penetrating and a bent portion disposed on at least one of the one side in the first direction and the other side in the first direction of the slit and bent. The length of the bent portion is shorter than the first-direction length between the first-direction end of the slit facing the bent portion and the bending start position of the bent portion.