Vapor Chamber Composite Capillary Layer for Thin Design
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Solution Overview
Problem
Conventional vapor chambers face challenges in achieving a thin design due to the impact of capillary effects, as thin materials for capillary tissues are difficult to find, making them unsuitable for modern electronic products with light and thin designs.
Innovation Solution
A vapor chamber structure featuring a composite capillary layer formed by weaving steel wires with a titanium coating, which can be drawn into a smaller diameter to maintain capillary force and prevent corrosion, allowing for a finer mesh installation in thinner designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional capillary tissue materials are used in vapor chambers, then the capillary effect can be achieved, but the vapor chamber thickness cannot be reduced sufficiently for thin electronic product designs
Solution Approach 1:
The patent applies parameter changes by transitioning from conventional porous capillary materials to a metal mesh structure with controlled wire diameter and mesh size. By adjusting the wire diameter to a specific range and optimizing the mesh configuration, the capillary pressure is enhanced while enabling thinner vapor chamber designs. This parameter optimization resolves the contradiction between reduced thickness and maintained capillary performance.
Solution Approach 2:
The patent employs composite materials by combining metal wires (such as copper or aluminum) with specific surface treatments or coatings to create a composite capillary structure. This composite approach enhances the capillary effect through controlled surface properties while maintaining structural integrity in thin configurations, thereby achieving both thinness and reliable capillary function.
2Length of moving object
If the capillary layer is made thinner to meet design requirements, then the vapor chamber can be thinner, but the capillary tissue becomes more fragile and difficult to manufacture
Solution Approach 1:
The patent utilizes flexible thin film structures by employing metal mesh with optimized wire diameter and mesh configuration. This mesh structure provides flexibility and durability in thin configurations, making it easier to manufacture and install in thin vapor chambers while maintaining capillary functionality. The flexible mesh can be conformally attached to the vapor chamber interior surface.
Solution Approach 2:
The patent applies parameter changes by optimizing the wire diameter, mesh size, and open area ratio of the capillary layer to achieve a balance between thinness and manufacturability. Specific parameter ranges are established to ensure the capillary layer remains durable and easy to manufacture while enabling thinner vapor chamber designs.
3Length of moving object
If finer mesh is used to achieve thinner vapor chamber design, then the thickness requirement is met, but the mesh becomes more susceptible to corrosion from working fluid
Solution Approach 1:
The patent employs composite materials by using metal wires with corrosion-resistant coatings or surface treatments. This composite structure provides both the mechanical integrity needed for fine mesh configurations and enhanced corrosion resistance against working fluids, resolving the contradiction between thinness and corrosion resistance.
Solution Approach 2:
The patent applies parameter changes by selecting specific material compositions and surface treatment parameters for the capillary mesh. By optimizing the material properties and surface characteristics, the mesh achieves both fine dimensions for thin vapor chambers and sufficient corrosion resistance to withstand exposure to working fluids.
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 solution enables the creation of a vapor chamber that meets the thin design requirements of electronic products while maintaining necessary capillary force and preventing corrosion, ensuring effective heat dissipation.
Implementation Method 1
a coating layer coated outside the steel wire to achieve the effect of preventing the steel wire from being corroded by the working fluid inside the vapor chamber
Implementation Method 2
the capillary effect of a capillary tissue in the vapor chamber will be affected by the requirement for the thin design
Data Source
AI summary
A vapor chamber structure includes a thin-sheet housing with a hollow interior and a composite capillary layer installed in the thin-sheet housing. The composite capillary layer is a metal woven mesh formed by weaving plural metal filaments, and each metal filament of the composite capillary layer is a steel wire having a coating layer on the exterior of the steel wire. By pulling and drawing the steel into a linear shape, a smaller wire diameter is obtained, so that the composite capillary layer will not be broken easily and can be used for making a finer woven mesh which can be installed in a thinner vapor chamber.