Heat Pipe Cooling Structure With Dual Contact Materials
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Solution Overview
Problem
Conventional heat dissipation structures with heat pipes and fins suffer from gaps that form after welding, leading to air thermal resistance and reduced heat conductivity.
Innovation Solution
A heat dissipation structure with a heat pipe and different heat dissipation contact materials, where a second material with a lower melting point fills gaps between the first material and the heat pipe, enhancing connectivity and reducing air thermal resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional welding is used to join heat pipe and heat dissipation structure, then structural strength is improved, but gaps are formed causing air thermal resistance
Solution Approach 1:
The patent introduces a heat dissipation contact material as an intermediary substance between the heat pipe and heat dissipation structure. This material fills the gaps formed by welding, eliminating air thermal resistance while maintaining structural integrity. The intermediary material serves dual purposes: mechanical filling of gaps and thermal conduction enhancement.
Solution Approach 2:
The patent changes the physical state parameter of the heat dissipation contact material by utilizing its melting point characteristics. The second heat dissipation contact material with lower melting point liquefies under welding heat to flow into gaps, then solidifies to fill and seal the间隙, transforming from solid to liquid and back to solid to achieve complete gap filling.
2Ease of manufacture
If single heat dissipation contact material is used, then manufacturing process is simple, but gap filling effectiveness is insufficient
Solution Approach 1:
The patent employs a composite heat dissipation contact material system consisting of two different materials with complementary properties. The first material provides base filling and thermal conduction, while the second material with lower melting point provides gap penetration and sealing. This composite approach enhances gap filling effectiveness while remaining compatible with conventional welding processes.
Solution Approach 2:
The patent applies different heat dissipation contact materials in different locations and conditions within the same joint. The second material with lower melting point is strategically used to target specific gap regions, while the first material provides overall filling. This localized application optimizes gap filling quality without complicating the overall manufacturing process.
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 reduces air thermal resistance and increases heat conductivity by filling gaps with a liquefiable second contact material, ensuring better thermal contact and improved heat transfer.
Implementation Method 1
A melting point of the second heat dissipation contact material is smaller than a melting point of the first heat dissipation contact material, so that the second heat dissipation contact material is able to liquefy and fill into a plurality of gaps formed between the first heat dissipation contact material and the at least one heat pipe
Implementation Method 2
a heat dissipation structure having a heat pipe
Implementation Method 3
the heat dissipation base has a first heat dissipation surface and a second heat dissipation surface opposite to each other
Data Source
AI summary
A heat dissipation structure includes a heat dissipation base, at least one heat pipe, and a first heat dissipation contact material and a second heat dissipation contact material that are different from one another. The heat dissipation base has a first and a second heat dissipation surface opposite to each other. At least one recessed trough is concavely formed on the first heat dissipation surface. The at least one heat pipe is located in the at least one recessed trough. The first and the second heat dissipation contact material are filled in the at least one recessed trough. At least one cooling fin is joined to the second heat dissipation surface of the heat dissipation base, and at least one internal coolant passage is defined between the heat dissipation base and the at least one cooling fin.