Nested Dual-Working-Fluid Heat Pipe for Low-Temperature Activation
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Solution Overview
Problem
Conventional heat pipes face challenges in assembly complexity, increased assembling cost, and reduced applicability due to the need for multiple heat pipes with different working fluids to maintain effective heat dissipation across varying temperatures, especially below 0 degrees Celsius.
Innovation Solution
A heat pipe structure comprising two tubular bodies with different working fluids, where one fluid is methyl alcohol and the other is pure water, allowing for continuous heat transfer by phase change, with capillary structures facilitating fluid circulation, enabling operation at low temperatures and reducing assembly costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple heat pipes with different working fluids are used to maintain heat dissipation across varying temperatures, then heat transfer effectiveness is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines multiple heat pipe functions into a single integrated structure by nesting inner and outer heat pipes within one another. The inner heat pipe contains methyl alcohol for low-temperature operation, while the outer heat pipe contains pure water for normal-temperature operation. This merging eliminates the need for separate heat pipe assemblies and simplifies the overall device structure while maintaining effective heat dissipation across varying temperatures.
Solution Approach 2:
The nested heat pipe structure serves multiple functions simultaneously: the inner heat pipe handles low-temperature heat dissipation using methyl alcohol, while the outer heat pipe handles normal-temperature heat dissipation using pure water. This multi-functional design allows a single assembly to replace what would traditionally require multiple separate heat pipe systems, reducing assembly complexity while maintaining reliability across different temperature conditions.
2Reliability
If multiple heat pipes with different working fluids are used to maintain heat dissipation across varying temperatures, then heat transfer effectiveness is improved, but assembling cost increases
Solution Approach 1:
The patent combines multiple heat pipe functions into a single integrated structure by nesting inner and outer heat pipes within one another. The inner heat pipe contains methyl alcohol for low-temperature operation, while the outer heat pipe contains pure water for normal-temperature operation. This merging eliminates the need for separate heat pipe assemblies and simplifies the overall device structure while maintaining effective heat dissipation across varying temperatures.
3Reliability
If multiple heat pipes with different working fluids are used to maintain heat dissipation across varying temperatures, then heat transfer effectiveness is improved, but applicability of the assembly is lowered
Solution Approach 1:
The nested heat pipe structure serves multiple functions simultaneously: the inner heat pipe handles low-temperature heat dissipation using methyl alcohol, while the outer heat pipe handles normal-temperature heat dissipation using pure water. This multi-functional design allows a single assembly to replace what would traditionally require multiple separate heat pipe systems, reducing assembly complexity while maintaining reliability across different temperature conditions.
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 dual-working-fluid heat pipe structure enhances assembly convenience, lowers manufacturing costs, and increases applicability by maintaining effective heat transfer across normal and low temperatures without abrupt temperature rises, thus improving device performance and reducing the need for multiple heat pipes.
Implementation Method 1
The heat is transferred by means of the liquid-vapor phase change of the working fluid in form of latent heat
Implementation Method 2
The heat is transferred by means of the liquid-vapor phase change of the working fluid in form of latent heat
Implementation Method 3
The liquid working fluid flows back to the evaporation section under the capillary attraction provided by the capillary structure in the chamber
Data Source
AI summary
A heat pipe structure includes a first tubular body and a second tubular body. The first tubular body has a first receiving space. A first working fluid is contained in the first receiving space. The second tubular body is disposed in the first receiving space. The second tubular body has a second receiving space. A second working fluid is contained in the second receiving space. The solidification temperature of the first working fluid is different from the solidification temperature of the second working fluid so that the heat pipe structure can be activated at low temperature to keep operating at normal temperature to enhance the performance. Moreover, the assembly applicability is enhanced to lower the assembling cost.