Vacuum Insulated Panel Seal Composition for Hermetic Thermal Stress Resistance
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Solution Overview
Problem
Conventional vacuum insulated glass panels face issues such as significant de-tempering of glass substrates, high manufacturing costs, and poor durability due to thermal stress and edge seal failures.
Innovation Solution
A vacuum insulating panel design featuring a first and second substrate, spacers, and a hermetic edge seal with a main seal layer comprising tellurium oxide and vanadium oxide, along with primer layers, to improve seal density, hermiticity, and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional seal materials are used in vacuum insulated panels, then manufacturing cost is reduced, but seal durability and hermiticity deteriorate under thermal stress
Solution Approach 1:
The seal layer uses a composite material system comprising tellurium oxide (20-80 wt%), vanadium oxide (5-30 wt%), and additional oxides (10-50 wt%), creating a multi-component glass composition that combines the benefits of each oxide for enhanced durability, hermiticity, and thermal stress resistance while maintaining manufacturing feasibility
Solution Approach 2:
The invention optimizes specific compositional parameters including TeO3/TeO4 ratio (> TeO3 by wt%), VO2/V2O5 ratio (> VO2 by wt%), and overall oxide proportions to achieve the desired balance between seal performance and manufacturing cost, transforming the seal material properties through precise parameter control
2Reliability
If higher tellurium oxide content is used in the seal layer, then seal density and hermiticity improve, but manufacturing cost increases
Solution Approach 1:
The invention establishes an optimized parameter range for tellurium oxide content (20-80 wt%) with specific compositional ratios to achieve the desired seal hermiticity and density while controlling material costs through efficient use of the expensive tellurium oxide component
Solution Approach 2:
The seal layer combines tellurium oxide with vanadium oxide and other oxides in specific proportions to achieve the required performance at optimized material quantities, where each component contributes specific properties that reduce the need for excessive tellurium oxide
3Use of energy by moving object
If conventional heating methods are used, then manufacturing simplicity is maintained, but heating efficiency and energy absorption deteriorate
Solution Approach 1:
The seal material composition is optimized to enhance near-IR absorption characteristics, allowing more efficient energy absorption from conventional heating sources and improving heating efficiency without requiring complex heating system modifications
Solution Approach 2:
The invention replaces reliance on complex mechanical heating systems with material-based thermal absorption optimization, where the seal layer's compositional properties enable efficient energy conversion and heat retention
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 proposed solution enhances heating efficiency, reduces de-tempering, improves seal durability, and maintains structural integrity under thermal differentials, while also reducing manufacturing costs.
Implementation Method 1
improved heating efficiency due to increased absorption in the near-IR
Data Source
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AI summary
A vacuum insulating panel includes may include: a first substrate; a second substrate; a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at a pressure less than atmospheric pressure; a seal provided between at least the first and second substrates, the seal comprising a first seal layer and/or a second seal layer; and wherein the first seal layer may include from about 20-80 wt.% tellurium oxide, the tellurium oxide comprising TeO4 and TeO3, and wherein the first seal layer may include more TeO3 than TeO4 by wt.%.