Pressed Heat Pipe Structure for Adjustable Working Temperature Range
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Solution Overview
Problem
Existing heat pipes have a limited temperature difference between the evaporation and condensation sections, which can lead to inadequate operating temperatures in extreme environments, preventing electronic components from maximizing their performance.
Innovation Solution
A heat pipe with an adjustable working temperature range is achieved by creating a deformation zone with increased fluid resistance through uniform pressing of the tube, allowing for a controlled reduction in cross-sectional area, thereby enhancing the temperature difference between the evaporation and condensation sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the heat pipe operates with a small temperature difference between evaporation and condensation sections, then heat dissipation efficiency is improved, but the working temperature range is limited and electronic components cannot achieve proper operating temperature in extreme cold environments
Solution Approach 1:
The patent introduces a deformation zone with distinct structural characteristics (reduced cross-sectional area, increased fluid resistance) at a specific location within the heat pipe. This local modification creates different flow resistance characteristics in different sections, enabling the heat pipe to maintain efficient heat dissipation while achieving a broader working temperature range by controlling the phase change fluid flow through the deformation zone
Solution Approach 2:
The patent modifies the physical parameters of the heat pipe by creating a deformation zone that reduces the cross-sectional area and increases fluid resistance. This parameter change allows the heat pipe to adjust its operating characteristics, enabling it to function effectively across a wider temperature range while maintaining adequate heat dissipation performance
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
This solution enables efficient heat transfer across a wider temperature range, ensuring electronic components operate within an optimal temperature range, preventing overheating and maintaining system performance efficiency.
Implementation Method 1
the working liquid absorbing heat of the working object and converting into a vapor phase
Implementation Method 2
the working liquid passing the passage to perform a condensation reaction along the length direction and condensing back into the working liquid
Implementation Method 3
the deformation zone has a higher fluid resistance
Implementation Method 4
the working liquid moving to a location where the working object attached thereto through the capillary structure
Data Source
AI summary
A manufacturing method and structure of heat pipe with adjustable working temperature range are provided. The heat pipe includes a tube, a capillary structure and a working liquid. The tube includes a passage having a length direction and a diameter direction. Besides, a part of the tube has a pressed deformation zone in the pipe diameter direction, and the pressed cross-sectional area of the deformation zone in the diameter direction is reduced by a reduction ratio with respect to an original cross-sectional area before pressing, so that the deformation zone has a higher fluid resistance. Thereby, the heat pipe can be operated under a certain working temperature range, and the working object can achieve the working efficiency.