Heat pipe with micro-pore tubes array and making method thereof and heat exchanging system
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Solution Overview
Problem
Existing heat pipes face limitations due to complex fabrication processes, low heat conduction efficiency, and poor sustainability against pressure, primarily due to air cavities and inefficient welding methods, which restrict their application and reliability.
Innovation Solution
A novel heat pipe design featuring micro tube arrays with a solid heat conductor, sealed with a gradually shrinking sealing strip formed through cold welding, and reinforced with curled joints, allowing for efficient heat transfer and enhanced pressure resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat pipes are arranged side by side with metal conducting plates mounted therearound, then the advantages of heat pipes can be fully profited, but air cavities existing between the pipes lead to large heat resistance and low endurance against pressure
Solution Approach 1:
The patent merges multiple heat pipe functions into a single integrated heat pipe structure with internal partitions, eliminating air cavities between separate pipes while maintaining high heat conduction efficiency through direct metal-to-metal contact across the heat exchange surface
Solution Approach 2:
The invention transitions from a two-dimensional array of separate heat pipes to a three-dimensional integrated structure with internal partitions, allowing heat conduction paths to extend through the volume of the heat conductor rather than just along the surface
2Device complexity
If heat pipes are welded together to constitute a juxtaposition structure, then a plate-shaped surface is formed, but throughput is low due to low welding efficiency and poor welding renders heat pipes not applicable in situations with high pressure
Solution Approach 1:
The heat pipe is segmented into multiple independent heat conduction channels through internal partitions, allowing each channel to function independently and enabling parallel heat transfer processes that increase overall throughput without requiring welding between separate pipes
Solution Approach 2:
Multiple heat conduction channels are merged into a single integrated heat pipe body, eliminating the need for welding operations while maintaining the plate-shaped surface configuration for efficient heat exchange
3Reliability
If the heads of heat pipes are sealed by encapsulating heads or two phase process, then sealing is achieved, but these processes are complex and sealing property and reliability may be low
Solution Approach 1:
The sealing of multiple heat pipe channels is merged into a single sealing operation at the head of the integrated heat pipe, eliminating the need for multiple separate sealing processes and improving both sealing reliability and manufacturing simplicity
Solution Approach 2:
The internal partitions segment the heat pipe into independent channels while the external sealing structure remains unified, allowing complex internal geometry to be achieved without increasing external sealing complexity
4Reliability
If general heat pipe assumes a circular shape tube with a certain diameter, then heat pipe function is achieved, but contact area with elements to be cooled is small and equivalent heat resistance is large
Solution Approach 1:
The heat pipe structure transitions from a one-dimensional circular tube to a two-dimensional plate-shaped configuration with internal partitions, dramatically increasing the heat exchange surface area while maintaining compact form factor and reducing equivalent heat resistance
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 novel heat pipe achieves high heat conduction efficiency with reduced thermal resistance, improved reliability, and increased endurance against pressure, enabling wider applications and simplified manufacturing processes.
Implementation Method 1
the micro tubes being filled therein with working medium which exchanges heat through phrase change
Implementation Method 2
The main heat conduction mechanism of heat pipes is evaporation and condensation
Implementation Method 3
The main heat conduction mechanism of heat pipes is evaporation and condensation
Implementation Method 4
at least one of them is provided with a sealing strip of gradually shrinking shape that is formed from cold welding
Data Source
AI summary
A heat pipe with micro tubes includes of a solid heat conductor provided therein with two or more parallel micro tubes. The micro tubes are filled with a working medium which exchanges heat through phase change. Two ends of the heat conductor are sealed and at least one of the ends is provided with a sealing strip of gradually shrinking shape that is formed from cold welding.