Vapor Chamber Heat Pipe Structure for Dry-Burn Prevention
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Solution Overview
Problem
Conventional 3D vapor chambers suffer from weak structural strength and inefficient working fluid flow-back paths, leading to dry burning and potential fluid leakage due to horizontal fixation and long flow paths.
Innovation Solution
A combination heat dissipation structure incorporating a vapor chamber and heat pipe with annular elements that provide axial support and direct fluid flow paths, enhancing structural integrity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pipe is horizontally fixed to the vapor chamber using only a line contact weld, then the assembly process is simple, but the structural strength is weak and the pipe may separate or break under vertical impact
Solution Approach 1:
The invention transitions from horizontal line-contact welding to vertical face-to-face welding, changing the spatial dimension and configuration of the connection. The pipe's open end is inserted through a through-hole in the upper plate member and welded to the lower surface, creating a vertical connection that provides much greater structural strength and resistance to vertical impacts while maintaining manufacturing simplicity.
2Stability of the object's composition
If the supporting members are located at a distance from the opening to space the pipe, then the pipe is properly supported, but the working fluid has to flow through a considerably long path resulting in low flow-back efficiency
Solution Approach 1:
The invention removes the supporting members from the system entirely. Instead of using supporting members to space the pipe from the upper plate member, the through-hole in the upper plate member directly provides the spacing function. The pipe's open end is inserted through the through-hole and welded to the lower surface, eliminating the need for supporting members and thereby shortening the working fluid flow-back path while maintaining proper spacing.
3Stability of the object's composition
If the condensed working fluid flows back through a long path to the vaporizing zone, then the pipe structure is stable, but the vaporizing zone may occur dry burning due to insufficient working fluid
Solution Approach 1:
The invention changes the spatial configuration by inserting the pipe's open end through a through-hole in the upper plate member and welding it to the lower surface. This vertical arrangement through the thickness of the plate member creates a direct, short path for working fluid to flow back from the pipe to the vaporizing zone, ensuring sufficient working fluid supply while maintaining structural stability.
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 ensures rapid and continuous two-phase heat exchange, preventing dry burning and fluid leakage by shortening flow-back paths and improving structural strength.
Implementation Method 1
a first wick structure 125 and a second wick structure 126 are provided on an inner wall surface of the upper and the lower plate member 121, 122, respectively. And, a plurality of supporting members 127 is provided in the flat chamber 124 to support and space the upper and the lower plate member 121, 122 from one another.
Implementation Method 2
The heat pipe internally defines a heat pipe chamber 43 extended between the closed end 41 and the open end 42. The open end 42 of the heat pipe inserted into the airtight chamber 33 via the through hole 312 is axially supported on an upper side of the first wick structure 311 and is in communication with the airtight chamber 33.
Implementation Method 3
the vapor chamber 3, and at least one heat pipe 4. The vapor chamber 3 internally defines an airtight chamber 33 filled with a working fluid. Two opposing inner side surfaces of the upper and the lower plate member 31, 32 that correspondingly face toward the airtight chamber 33 are provided with a first and a second wick structure 311, 321, respectively.
Data Source
AI summary
A combination heat dissipation structure includes a vapor chamber and at least one heat pipe. The vapor chamber defines an airtight chamber filled with a working fluid and provided with first and second wick structures. The vapor chamber further includes at least one through hole formed on its upper wall and communicable with the airtight chamber, and at least one annular element provided in the airtight chamber corresponding to the through hole to contact with the first and second wick structures. The heat pipe has an open end inserted into the airtight chamber to contact with the first wick structure, such that the heat pipe is axially supported and located by the annular element. With these arrangements, a flow-back path between the vapor chamber and the heat pipe is largely shortened to avoid dry burning in the vapor chamber and upgrade the two-phase heat exchange efficiency of the vapor chamber.