Multilayer Vacuum Insulation Structure With Boundary Fixation
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Solution Overview
Problem
The challenge lies in precisely forming through-holes in large, planar multilayer vacuum insulators used for thermal insulation, which complicates the fixation process and affects the thermal insulating performance.
Innovation Solution
The solution involves using two types of multilayer vacuum insulators, where the first type covers the surface with radiation shield films and spacers, and a second band-shaped multilayer vacuum insulator extends along the boundary with a through-hole for a retainer, reducing the number of holes needed and enhancing fixation using hook-and-loop fasteners and keep plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If through-holes are formed in large planar first multilayer vacuum insulators for fixation, then the insulators can be fixed to the to-be-insulated surface, but the manufacturing precision deteriorates due to difficulty in precisely forming through-holes
Solution Approach 1:
The thermal insulating structure is divided into multiple first multilayer vacuum insulators that adjoin each other to cover the to-be-insulated surface. By segmenting the coverage area into smaller insulator units, the difficulty of forming through-holes is reduced compared to a single large insulator, while still achieving complete surface coverage through the adjoining arrangement.
2Strength
If multiple through-holes are formed in large planar multilayer vacuum insulators, then fixation points increase, but the thermal insulating performance deteriorates due to increased heat conduction paths
Solution Approach 1:
The second multilayer vacuum insulator is designed with a specific band shape that extends along the boundary between first multilayer vacuum insulators. This localized configuration provides fixation capability at the boundaries while minimizing the overall number of through-holes in the large planar first multilayer vacuum insulators, thereby reducing heat conduction paths and maintaining thermal insulating performance.
3Ease of manufacture
If a second band-shaped multilayer vacuum insulator is added to extend along the boundary, then through-hole formation becomes easier, but the device complexity increases
Solution Approach 1:
The second multilayer vacuum insulator is positioned to extend along the boundary between the first multilayer vacuum insulators, effectively merging the fixation function into the boundary region. This combining approach allows through-holes to be formed in the narrower band-shaped second insulator rather than in the large planar first insulators, easing manufacturing while the overall structure remains integrated and functional.
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 configuration minimizes the number of through-holes in the first multilayer vacuum insulators, facilitates easier hole formation, and suppresses thermal conduction while maintaining structural integrity, thereby improving thermal insulation efficiency.
Implementation Method 1
a multilayer vacuum insulator in which radiation shield films and spacers are layered alternately
Implementation Method 2
a thermal insulating structure including a multilayer vacuum insulator
Data Source
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AI summary
A thermal insulating structure includes: at least two first multilayer vacuum insulators that adjoin each other and that cover a to-be-insulated surface; a retainer that is fixed to the to-be-insulated surface and that protrudes from a boundary between the first multilayer vacuum insulators; a second multilayer vacuum insulator that extends along the boundary and that covers the boundary, the second multilayer vacuum insulator including a through-hole formed therein, in which the retainer is inserted; and a keep plate that is fixed to the retainer and that holds the second multilayer vacuum insulator and the first multilayer vacuum insulators.