Multi-Layer Heat Sink With Extension Columns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat sinks face challenges in enhancing heat dissipation efficiency due to limited airflow and structural strength issues, as increasing the number or height of radiating fins reduces gap width, leading to increased airflow resistance and potential deformation, while single configurations fail to address varying heat sources effectively.
Innovation Solution
A heat sink structure featuring multiple radiating fin assemblies stacked in layers with varying gap sizes and thicknesses, secured by extension columns and support sections, allowing for flexible arrangement and enhanced airflow, and incorporating different fin configurations to optimize heat exchange across the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of radiating fins is increased to enlarge heat dissipation area, then heat dissipation area is improved, but gap between adjacent fins becomes narrower leading to increased airflow resistance
Solution Approach 1:
The heat sink is divided into multiple layers with different fin configurations. Each layer contains radiating fins with different gap sizes, allowing the system to simultaneously provide large heat dissipation area and adequate airflow channels. The segmentation into layered structures enables different regions to serve different functions in heat dissipation.
Solution Approach 2:
Different regions of the heat sink have different fin gap characteristics. Some areas have smaller gaps for maximum heat dissipation area, while other areas have larger gaps to reduce airflow resistance. This local variation in quality allows optimization of both heat dissipation area and airflow characteristics in different zones.
2Area of stationary object
If the height of radiating fins is increased to enlarge heat dissipation area, then heat dissipation area is improved, but radiating fins become thin and prone to deformation
Solution Approach 1:
Instead of simply increasing fin height in one dimension, the design transitions to a multi-layered three-dimensional structure. This allows heat dissipation area to be expanded in the vertical stacking direction rather than solely by increasing individual fin height, thereby maintaining fin thickness and structural strength while achieving larger total heat dissipation area.
3Strength
If the thickness of radiating fins is increased to prevent deformation, then structural strength is improved, but number of radiating fins is reduced leading to decrease of heat dissipation area
Solution Approach 1:
The design utilizes the vertical stacking dimension to compensate for the reduction in fin count caused by increased thickness. By arranging multiple layers of thicker fins vertically, the total heat dissipation area is maintained or enhanced while each individual fin has sufficient thickness for structural strength.
4Productivity
If one heat sink is directly overlaid on another heat sink to achieve higher heat dissipation efficiency, then heat dissipation efficiency is improved, but weight of upper heat sink applies pressure causing deformation of radiating fins
Solution Approach 1:
Support columns are introduced as intermediary elements between the upper and lower heat sink layers. These support columns bear the weight of the upper layer and distribute the load, preventing direct pressure on the radiating fins and thus avoiding deformation while maintaining the stacked configuration for enhanced heat dissipation.
5Ease of manufacture
If single configuration of radiating fins is used, then manufacturing is simplified, but heat dissipation performance cannot be optimized for varying heat sources
Solution Approach 1:
The heat sink is segmented into multiple layers, each with different fin configurations suitable for different heat dissipation requirements. This segmentation allows customization of heat dissipation characteristics in different regions while still using standardized manufacturing processes for each layer type.
Solution Approach 2:
Different regions of the heat sink have different fin configurations tailored to local heat dissipation needs. Areas with higher heat generation can have fins optimized for maximum heat transfer, while other areas can have different configurations, all within a manufacturable multi-layer structure.
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 by optimizing airflow and structural integrity, providing customizable heat exchange performance for different areas and preventing deformation when layers are overlaid, thus addressing the limitations of conventional heat sinks.
Implementation Method 1
the heat sink contacts and is attached to a heat source (such as a central processing unit or a graphics processing chip) for conducting the heat
Implementation Method 2
the radiating fins of the heat sink outward dissipate the heat by way of radiation
Implementation Method 3
The heat is outward dissipated by way of heat radiation so as to achieve the object of heat dissipation
Data Source
AI summary
A heat sink structure includes a base seat and at least one heat dissipation unit. The base seat has a first face and a second face. At least one extension column extends from the second face of the base seat. The heat dissipation unit is disposed above the base seat and spaced from the base seat by a gap. The extension column serves to restrict or secure the heat dissipation unit in horizontal and vertical directions. The heat dissipation unit with different structures provides multiple heat dissipation features to enhance the entire heat dissipation performance.