Variable Cross-Section Heat Pipe for Compact Heatsink Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat pipe-type heatsinks face challenges in improving cooling performance due to limited installation space, inadequate heat transport efficiency, and uneven heat distribution, leading to increased thermal resistance and insufficient cooling in densely packed electronic devices.
Innovation Solution
A heatsink design featuring a heat transport member with a varying internal cross-sectional area from the heat receiving portion to the heat radiating portion, filled with a working fluid, where the cross-sectional area in the heat radiating portion is larger than in the heat insulating portion, allowing for enhanced heat transfer and equalized heat input, while maintaining sufficient volumes for effective cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If many heat pipes are arranged in parallel to increase heat transport capacity, then cooling performance is improved, but installation space in width direction increases
Solution Approach 1:
Multiple heat pipes are merged into a single heat transport member with multiple internal spaces, integrating the functions of multiple separate heat pipes into one component. This reduces the overall width required for installation while maintaining the heat transport capacity of multiple pipes
Solution Approach 2:
Multiple internal spaces for heat transport are nested within a single heat transport member structure, similar to nested dolls. This allows multiple heat transport channels to occupy the same external footprint, reducing the width direction space requirement while providing sufficient heat transport capacity
2Productivity
If heat radiating fin structure is improved to increase heat radiation efficiency, then cooling performance is improved, but installation space in width direction increases
Solution Approach 1:
The heat radiating fins are arranged to extend in the length direction rather than the width direction, changing the dimensional orientation of the heat radiation structure. This allows for sufficient heat radiation surface area while constraining the width direction footprint to meet space limitations
3Productivity
If heat receiving portion volume is increased to equalize heat input, then cooling performance is improved, but installation space in width direction increases
Solution Approach 1:
Multiple internal spaces within the heat transport member are nested to create a sufficiently large heat receiving portion volume without increasing the external width. The nested configuration allows the heat receiving portion to have adequate volume for equalizing heat input from the heating element while maintaining a compact width direction footprint
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 improves heat radiation efficiency and cooling performance even in space-constrained environments by ensuring uniform cooling and reducing thermal resistance, allowing for effective heat dissipation from densely packed electronic components.
Implementation Method 1
a heat transport member having a heat receiving portion thermally connected to a heating element; and a heat radiating fin group which is thermally connected to a heat radiating portion of the heat transport member
Implementation Method 2
the heat transport member has an integral internal space that communicates from the heat receiving portion to the heat radiating portion and that is filled with a working fluid
Implementation Method 3
a heat radiating fin group which is thermally connected to a heat radiating portion of the heat transport member and in which a plurality of heat radiating fins is arranged
Implementation Method 4
the heat transport member has an integral internal space that communicates from the heat receiving portion to the heat radiating portion and that is filled with a working fluid
Data Source
AI summary
The present disclosure provides a heatsink that can improve heat radiation efficiency of a heat radiating fin and equalize a heat input in a heat receiving portion while securing sufficient volumes of the heat receiving portion, a heat insulating portion, and a heat radiating portion even in an environment in which an installation space for the heatsink, more specifically, an installation space in a width direction of the heatsink is limited.A heatsink including: a heat transport member having a heat receiving portion thermally connected to a heating element; and a heat radiating fin group which is thermally connected to a heat radiating portion of the heat transport member and in which a plurality of heat radiating fins is arranged, wherein the heat transport member has an integral internal space that communicates from the heat receiving portion to the heat radiating portion and that is filled with a working fluid, and a cross-sectional area of an internal space in a direction orthogonal to a heat transport direction of the heat transport member in the heat radiating portion is larger than the cross-sectional area in a heat insulating portion between the heat receiving portion and the heat radiating portion.