Heat Pipe Sealing Method Using Compression Elongated Column
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Solution Overview
Problem
Traditional heat pipe sealing methods result in a large, fragile sealed end that cracks during bending and compression, leading to disqualified products and reduced thermal transfer performance.
Innovation Solution
A sealing method using a compression mold to elongate the narrowing neck section of the heat pipe into a compression elongated column, followed by spot welding to form a sealed block, enhancing sealing ability and structural strength while reducing the ineffective end length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sealing method is used to form a large sealed end, then sealing ability is improved, but the heat pipe becomes fragile and prone to cracking during bending and compression operations
Solution Approach 1:
The invention changes the geometric parameters of the sealed end by compressing it to form an elongated column shape with reduced cross-sectional area. This parameter transformation maintains the sealing function while significantly improving mechanical strength and resistance to breakage during subsequent operations.
Solution Approach 2:
The invention applies local quality modification by creating a compression elongated column structure at the sealed end with different geometric properties than the original large sealed end. This localized structural change provides enhanced strength where needed while preserving the sealing ability.
2Reliability
If traditional sealing method is used, then sealing is achieved, but the effective length of the heat pipe is reduced due to the large size of the sealed end
Solution Approach 1:
The invention transforms the geometric parameters of the sealed end from a large cross-sectional shape to an elongated column shape with smaller cross-section. This parameter change reduces the space occupied by the sealed end, thereby increasing the effective length of the heat pipe for thermal transfer.
3Reliability
If traditional sealing method is used, then sealing is completed, but the hardness of the sealed end is insufficient leading to low work efficiency during bending and compression operations
Solution Approach 1:
The compression process changes the physical parameters of the sealed end material, increasing its hardness and density. This parameter transformation results in a more durable structure that withstands bending and compression operations more effectively, thereby improving work efficiency.
4Reliability
If the heat pipe undergoes bending operation, then the sealed end must be placed horizontally to avoid cracking, but this constraint reduces operational flexibility
Solution Approach 1:
The invention changes the geometric parameters of the sealed end to create a more robust structure that is no longer sensitive to orientation during bending operations. This parameter modification eliminates the operational constraint of placing the sealed end horizontally, thereby improving ease of operation.
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 method improves the work efficiency of heat pipe operations, increases the effective length for enhanced thermal transfer, and provides increased structural strength and resistance to breakage due to identical thermal expansion coefficients of the sealed block and compression elongated column.
Implementation Method 1
the narrowing neck section to be compressed and elongated to deform into a compression elongated column
Implementation Method 2
performing a spot welding and sealing operation on the compression elongated column
Implementation Method 3
allow the working fluid to undergo phase changes between the two phases of vapor and liquid through heat absorption and releasing
Data Source
AI summary
A heat pipe and a sealing method thereof; the sealing method for a heat pipe includes the steps of: providing a metal pipe member, the metal pipe member including one end having a sealed end portion formed thereon and another end thereof having a narrowing neck section extended therefrom. The narrowing neck section includes a channel. A compression mold compresses the narrowing neck section and moves away from the metal pipe member in order to compress and elongate the narrowing neck section into a compression elongated column and to seal the channel. Finally, spot welding process is performed on the compression elongated column to form a sealed block thereon. The present invention is of the merits of improved work efficiency for heat pipe bending, compression and testing and increased length of the metal pipe member with enhanced thermal transfer performance of the heat pipe.