Vacuum Insulation Module With Magnetic Spacers for Heat Loss
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Solution Overview
Problem
Existing thermal insulation methods face challenges in maintaining structural integrity under partial or total vacuum conditions, which is essential for minimizing conductive heat transfer and sound transmission, while also considering cost and environmental impact.
Innovation Solution
The use of spacers that generate a magnetic field to prevent physical contact between layers of material in a vacuum insulation module, maintaining the structural integrity and heat transfer properties by creating a sufficient magnetic repulsion between the layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mechanical spacers are used to maintain separation between layers, then structural integrity is maintained, but conductive heat transfer increases and device complexity increases
Solution Approach 1:
The patent replaces mechanical spacers with a magnetic field generation system. Electromagnets mounted on the inner surfaces of the enclosure walls generate magnetic fields that levitate the inner liner, eliminating the need for physical contact through mechanical spacers. This substitution eliminates conductive heat transfer paths while maintaining the required separation distance for structural integrity.
2Loss of energy
If thicker insulation material is used to reduce heat transfer, then thermal performance improves, but weight increases and volume increases
Solution Approach 1:
The patent utilizes the phase transition concept by creating a vacuum environment (removing gas phase) between the inner liner and outer enclosure. This vacuum barrier provides superior thermal insulation performance compared to traditional solid or fibrous insulation materials, achieving the same or better thermal performance with reduced weight and volume.
Solution Approach 2:
The magnetic levitation system enables the use of vacuum or gas-filled insulation without requiring mechanical support structures, allowing thin-walled enclosures to maintain separation against atmospheric pressure while minimizing material usage and weight.
3Loss of energy
If vacuum is applied to minimize conductive heat transfer, then thermal performance improves, but structural integrity deteriorates due to atmospheric pressure
Solution Approach 1:
The patent employs magnetic pressure as a counterforce to atmospheric pressure. Electromagnets generate attractive forces that pull the inner liner toward the outer enclosure, counterbalancing the external atmospheric pressure that would otherwise collapse the vacuum space. This magnetic counterforce enables structural integrity to be maintained under vacuum conditions.
Solution Approach 2:
Traditional mechanical support structures (struts, ribs, or rigid spacers) are replaced with a magnetic field-based pressure balancing system. The electromagnets dynamically adjust magnetic force to maintain equilibrium between atmospheric pressure and magnetic attraction, preserving the vacuum space and thermal insulation performance while avoiding mechanical contact points.
4Device complexity
If magnetic spacers are used to prevent physical contact, then device complexity increases, but manufacturing precision requirements decrease
Solution Approach 1:
The patent employs dynamic electromagnetic control to maintain layer separation. The electromagnets can adjust their field strength in real-time to compensate for manufacturing tolerances, thermal expansion, and pressure variations. This dynamic adjustment capability relaxes manufacturing precision requirements compared to fixed mechanical spacer systems that require precise fabrication and assembly.
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 effectively maintains structural integrity under vacuum conditions, minimizing conductive heat transfer and sound transmission, while potentially reducing material costs and environmental impact by using a magnetic field to keep layers separated.
Implementation Method 1
A first spacer is associated with the first layer of material and a second spacer is associated with the second layer of material. The first and second spacers generate a sufficient magnetic field to prevent physical contact between the first layer of material and the second layer of material.
Data Source
AI summary
A vacuum insulation assembly includes a number of vacuum insulation modules. Each module includes a first layer of material, a second layer of material substantially parallel to the first layer of material, a frame member disposed between the perimeter edges of the first and second layer of materials, a vacuum chamber formed between the first and second layer of materials and the frame member, and one or more spacers that generate a magnetic field. The spacers can be located on the interior, the exterior or disposed within the first and second layers of material. In one aspect, the spacers are permanent magnets, electromagnets, and the like, that are positioned such that the spacers provide a sufficient magnetic field to prevent the first and second layers of material from contacting each other.