Thin Heat Pipe Structure With Protrusion Segmentation
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Solution Overview
Problem
Conventional heat pipes in thin electronic devices face challenges in maintaining efficient vapor-liquid circulation and internal structure integrity due to compression and limited space, leading to inadequate heat dissipation and deformation issues.
Innovation Solution
A heat pipe structure with a main body comprising overlapping first and second board bodies, a capillary structure, and a working fluid, where a protrusion section is attached to the capillary structure to separate vapor and liquid fluids, maintaining vapor-liquid circulation efficiency even in thin designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the heat pipe is thinned to reduce the thickness of the electronic mobile device, then the device can achieve a thinner profile, but the internal vapor passage may be compressed and damaged, affecting vapor-liquid circulation efficiency
Solution Approach 1:
The heat pipe internal structure is segmented into distinct functional zones: a vapor passage section and a liquid passage section, separated by a protrusion section. This segmentation allows each zone to maintain its structural integrity and function independently, preventing compression damage while preserving vapor-liquid circulation efficiency in the thinned heat pipe.
Solution Approach 2:
The protrusion section creates local structural reinforcement at critical locations within the heat pipe. This local quality enhancement maintains the vapor passage openness and structural strength in the thinned heat pipe, preventing compression damage while preserving overall thermal performance.
2Length of stationary object
If the internal support structure is omitted to thin the vapor chamber, then the device achieves a thinner profile, but the internal chamber is likely to deform after vacuuming and sealing
Solution Approach 1:
The vapor chamber is segmented into multiple functional sections with defined boundaries. The protrusion section creates distinct vapor and liquid passage zones, providing internal structural support that prevents chamber deformation while maintaining a thin overall profile.
Solution Approach 2:
The protrusion section provides localized structural reinforcement within the thin vapor chamber walls. This local quality enhancement prevents deformation of the internal chamber during vacuuming and sealing operations while preserving the thin-profile design.
3Shape
If the sintered powder or capillary structure is compressed during flattening, then the heat pipe achieves a flat structure, but the capillary structure is damaged and loses its function
Solution Approach 1:
The heat pipe structure is segmented into rigid board body sections and a flexible capillary structure section. This segmentation allows the board bodies to be flattened while the capillary structure maintains its functional integrity through the protrusion section that prevents compression damage.
Solution Approach 2:
The protrusion section acts as a protective cushioning structure that prevents compression damage to the capillary structure during the flattening process. This beforehand protective measure ensures the capillary structure maintains its functionality while achieving a flat overall 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
The solution allows for flexible, efficient heat dissipation in narrow spaces with reduced pressure impedance, maintaining vapor-liquid circulation and structural integrity in thin heat pipes, suitable for thin electronic devices.
Implementation Method 1
a capillary structure (11) and a working fluid (2). The capillary structure (11) is formed with at least one passage (111)
Implementation Method 2
during the vapor-liquid circulation of the working fluid in the main body
Data Source
AI summary
A heat pipe structure includes a main body. The main body has a first board body, a second board body, a capillary structure and a working fluid. The first and second board bodies are overlapped and mated with each other to hold the capillary structure. The capillary structure is formed with at least one passage. One of the first and second board bodies is formed with a protrusion section protruding toward the capillary structure. The protrusion section is attached to the capillary structure in adjacency to the passage. Accordingly, the heat pipe structure has an extremely thin thickness.