Heatsink Flow-Path Layout for Limited Air Outlet Directions
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Solution Overview
Problem
Existing cooling devices with heatsinks face challenges in efficiently dissipating heat when the outlet direction of cooling air flow paths is limited, leading to reduced airflow and ineffective heat dissipation across the entire heatsink surface.
Innovation Solution
A heatsink design incorporating a fluid flow generator that rotates about a central axis, creating a flow of fluid with inlet and outlet configurations in specific regions, allowing for efficient heat dissipation by changing the fluid flow direction at an acute angle in certain paths, thereby optimizing airflow and heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the outlet direction of cooling air flow paths is limited to a particular direction, then the structure is simplified, but the range where cooling air flow paths can be formed is limited and heat dissipation efficiency decreases
Solution Approach 1:
The cooling air flow paths are divided into multiple segments with different outlet directions. Specifically, some flow paths have outlets facing the radial direction while others have outlets facing the axial direction, allowing the heatsink to dissipate heat effectively across different regions without requiring a complex unified outlet structure
Solution Approach 2:
Different regions of the heatsink are equipped with flow paths having different outlet characteristics. The central region has flow paths with radial outlets, while the peripheral region has flow paths with axial outlets, optimizing heat dissipation for each specific location based on its thermal characteristics and airflow requirements
2Device complexity
If the outlet direction of cooling air flow paths is limited to a particular direction, then the structure is simplified, but the airflow length between inlet and outlet becomes long and air flow rate decreases
Solution Approach 1:
The flow paths are segmented into different types based on their inlet and outlet configurations. Some flow paths have both inlet and outlet in the radial direction, while others have inlet in radial direction and outlet in axial direction, creating multiple airflow routes with different lengths and resistance characteristics to optimize overall air flow rate
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 enhances heat dissipation efficiency even with limited fluid outlet directions, improving airflow and cooling effectiveness across a larger area of the heatsink.
Implementation Method 1
a fluid flow generator that rotates about a central axis extending vertically to generate a flow of fluid
Implementation Method 2
The air flowing in the cooling air flow paths works as a main cooling medium that performs heat exchange with the heatsink so as to draw heat from the heat generating body
Implementation Method 3
a heat receiving section that receives heat from a heat radiating body
Data Source
AI summary
A heatsink, which is used with a fluid flow generator that rotates about a central axis extending vertically to generate a flow of fluid, includes a main body section having a top surface facing the fluid flow generator in a vertical direction, and fins that extend upward from the top surface so as to define a plurality of flow passages. Four regions defined by an X axis and a Y axis, which cross each other at an intersection between the central axis and the top surface and extend in an extending direction of the top surface, are referred to as a first region, a second region, a third region, and a fourth region, in order in a direction opposite to a rotation direction of the fluid flow generator. In a plan view from above, the plurality of flow passages form a plurality of fluid paths, each of which has an inlet disposed in at least one of the four regions for the fluid discharged from the fluid flow generator to flow in and an outlet disposed in the first region, and a fluid flow direction changes at an acute angle in the middle in at least one of the fluid paths having the inlet in the fourth region.