Vapor Chamber Flow-Path Layout for Slim Strength and Heat Transport
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Solution Overview
Problem
Existing vapor chambers face challenges in maintaining strength and heat transport capability while being slimmed, and are prone to oxide film formation on inner surfaces.
Innovation Solution
A vapor chamber design with varying cross-sectional areas in flow paths and a curved part, utilizing copper or copper alloy for inner layers and stronger materials for outer layers to enhance strength and thermal conductivity, and incorporating grooves and laminated layers to prevent oxide film formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the vapor chamber is slimmed to reduce thickness, then the device becomes more compact and suitable for portable terminals, but the strength and structural integrity of the vapor chamber deteriorates
Solution Approach 1:
The vapor chamber is segmented into multiple layers (first sheet, second sheet, and intermediate layer) with grooved flow paths. This segmentation allows each layer to contribute to both the slim profile and structural strength, as the layered construction distributes mechanical stress while maintaining compact thickness.
Solution Approach 2:
The vapor chamber employs composite material construction with multiple sheets and an intermediate layer forming a laminated structure. This composite approach enhances structural integrity and strength while maintaining a slimmed profile, as the combined layers provide both mechanical support and thermal functionality in a compact form factor.
2Length of moving object
If the vapor chamber is slimmed to reduce thickness, then the device becomes more compact, but the heat transport capability deteriorates
Solution Approach 1:
The intermediate layer is selectively positioned only in regions where oxide film formation is likely to occur, rather than uniformly throughout the entire vapor chamber. This local application maintains heat transport capability by preserving direct thermal contact in critical areas while still providing oxidation protection where needed, thus balancing slimmed thickness with effective heat transport.
Solution Approach 2:
The intermediate layer possesses porous characteristics that enable it to facilitate heat transport while providing oxidation protection. The porous structure allows thermal energy to pass through effectively while the material composition prevents oxide film formation on the flow path inner surfaces, maintaining heat transport capability in the slimmed design.
3Reliability
If an intermediate layer is added to prevent oxide film formation, then the reliability of the flow path is improved, but the device complexity increases
Solution Approach 1:
The intermediate layer is implemented as a thin film structure that is laminated between the first and second sheets. This thin film approach provides oxidation protection without significantly increasing device complexity, as the layer is sufficiently thin to maintain overall compactness while still delivering reliable oxide film prevention on the flow path inner surfaces.
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
The design improves strength and heat transport capability, while minimizing oxide film formation, making it suitable for slimmed applications.
Implementation Method 1
the working fluid receives heat from the heat source near the heat source, vaporizes, and moves in the flow path in a gas (vapor) phase
Implementation Method 2
the heat from the heat source is smoothly transported to a place apart from the heat source
Implementation Method 3
The working fluid in a gas phase, which has transported the heat from the heat source, moves to a place apart from the heat source, and the heat thereof is absorbed by its surroundings, so that the working fluid is cooled and condenses and the phase thereof changes to a liquid phase
Implementation Method 4
the use of materials with high thermal conductivity and strength to enhance structural integrity and thermal performance
Data Source
AI summary
Included are a plurality of first flow paths, and second flow paths arranged between adjacent ones of the first flow paths; and a layer including grooves constituting the first flow paths and the second flow paths, and a layer laminated on the insides of the grooves, and constituting inner surfaces of the first flow paths and the second flow paths.