Electronic Component Casing with Inclined Step for Turbulent Heat Dissipation
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Solution Overview
Problem
The existing electronic component casing designs, such as those described in the Toyota Prius New Model Guide, suffer from inefficient heat radiation due to the accumulation of heat generated by electronic components like inverters, which impairs the heat dissipation process.
Innovation Solution
The electronic component casing features an inclined portion that increases in height, a step portion, and a planar portion, with a greater height difference between the step portions to facilitate turbulent airflow, enhancing heat transfer and radiation by creating a larger surface area for heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the casing upper surface increases in height gradually rearward and then decreases, then the casing achieves a streamlined shape for aerodynamic performance, but heat radiation efficiency deteriorates due to laminar airflow along the surface
Solution Approach 1:
The invention introduces asymmetric step portions at specific locations on the casing upper surface, creating an asymmetric flow disturbance pattern that converts laminar flow to turbulent flow, thereby improving heat radiation while maintaining the overall streamlined shape
Solution Approach 2:
The invention changes the flow regime parameter from laminar to turbulent by introducing step portions with specific height and positioning, which alters the boundary layer characteristics and enhances convective heat transfer coefficients on the casing surface
2Ease of manufacture
If the casing is designed with gradual height changes, then manufacturing complexity is reduced, but heat dissipation performance worsens due to accumulated heat
Solution Approach 1:
The invention segments the casing upper surface into multiple levels using step portions, creating distinct zones that promote turbulent flow and enhance heat dissipation while maintaining manufacturability through standard molding techniques
Solution Approach 2:
The invention adds vertical dimensionality variations through step portions of different heights, creating multi-level surfaces that enhance heat transfer without significantly complicating the manufacturing process
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 design effectively improves heat radiation efficiency by converting laminar airflow into turbulent flow, promoting heat transfer and reducing temperature increases near the electronic component, thereby extending its lifespan and improving performance while reducing the casing size.
Implementation Method 1
converting laminar airflow into turbulent flow, promoting heat transfer
Implementation Method 2
heat radiation efficiency by converting laminar airflow into turbulent flow
Data Source
Figure 1
Figure 2(A)~2(B)
Figure 3
AI summary
An electronic component casing includes: an inclined portion that projects from an upper surface so as to increase in height gradually from one side; a step portion that descends as a continuation of an upper end of the inclined portion or descends via a plane connected to the upper end; and a planar portion connected to a lower end of the step portion.