Variable-Diameter Capillary Mesh for Faster Two-Phase Fluid Return
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Solution Overview
Problem
Conventional woven mesh capillary structures in two-phase fluid heat dissipation units have limited and uniform voids and meshes, leading to insufficient capillary attraction and water containing ability, resulting in slow backflow and potential dry-out, which affects heat transfer performance.
Innovation Solution
A capillary mesh woven structure with longitudinal and latitudinal lines of varying diameters, forming voids of different sizes and enhancing capillary attraction and water collection ability by allowing flexible design to meet specific heat dissipation requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional woven mesh capillary structure with uniform line diameters is used, then the structure is simple and easy to manufacture, but the capillary attraction and water containing ability are insufficient
Solution Approach 1:
The patent applies local quality by using latitudinal lines with different diameters (first, second, and third latitudinal lines with progressively smaller diameters) at different locations within the same mesh structure. This creates varying capillary action strengths in different regions, enhancing overall water containing ability while maintaining manufacturing feasibility through systematic variation rather than complete complexity.
Solution Approach 2:
The patent changes the parameter of line diameter systematically across the mesh structure. The latitudinal lines are designed with different diameters (first latitudinal line > second latitudinal line > third latitudinal line), which modifies the capillary pressure and fluid transport characteristics. This parameter variation enhances capillary attraction and water containing ability while keeping the overall structure manufacturable.
2Device complexity
If conventional woven mesh capillary structure with fixed void sizes is used, then the structure is simple, but the water containing ability and capillary attraction are monotonous and insufficient
Solution Approach 1:
The patent segments the mesh structure into multiple functional zones by introducing different types of latitudinal lines (first, second, and third) with progressively smaller diameters. This segmentation creates varied void sizes and capillary channels throughout the mesh, increasing the total water containing capacity. The segmentation is achieved through systematic line arrangement rather than complete structural complexity.
Solution Approach 2:
The patent adds a dimensional variation to the mesh structure by introducing latitudinal lines with different diameters at different positions. Instead of uniform two-dimensional mesh, the structure now has three-dimensional variation in line thickness and void size. This dimensional change increases capillary attraction and water containing ability while maintaining reasonable structural complexity.
3Ease of manufacture
If conventional woven mesh capillary structure is used, then the manufacturing process is simple, but the backflow speed is slow and dry-out may occur
Solution Approach 1:
The patent applies local quality by creating regions with different capillary pressures through varying line diameters. The first, second, and third latitudinal lines with progressively smaller diameters create localized capillary action zones that accelerate fluid backflow. This localized enhancement speeds up the overall backflow process while maintaining ease of manufacture through systematic line design.
Solution Approach 2:
The patent changes the line diameter parameter across different latitudinal lines to optimize backflow speed. By making the first latitudinal line have the largest diameter and the third latitudinal line have the smallest diameter, the structure creates varying capillary pressures that accelerate fluid transport. This parameter variation enhances backflow speed while keeping the manufacturing process relatively simple.
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 structure effectively guides working fluid flow, preventing dry-out and enhancing heat transfer efficiency by increasing voids and flow-guiding micro-passages, ensuring continuous fluid circulation for improved heat dissipation.
Implementation Method 1
the capillary mesh woven structure has more voids with different sizes so that the capillary mesh woven structure has greater capillary attraction and better water collection (containing) ability
Data Source
AI summary
A capillary mesh woven structure is applied to a two-phase fluid heat dissipation unit. The capillary mesh woven structure includes multiple longitudinal lines and multiple latitudinal lines. At least two latitudinal lines with different line diameters are selectively arranged as a latitudinal line set. The single longitudinal line and one latitudinal line set sequentially repeatedly intersect (and overlap with) each other and are collocated and woven with each other to form the capillary mesh woven structure. Accordingly, the capillary mesh woven structure has more voids with different sizes so that the capillary mesh woven structure has greater capillary attraction and better water collection (containing) ability to greatly enhance the heat transfer performance.