Vacuum Glazing With Metallic Frames for Reduced Bonding Heat Transfer
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Solution Overview
Problem
Existing vacuum glazing technologies suffer from low insulating performance due to thick adhesive layers, increased spacer height leading to instability, and high heat transfer through bonding parts, necessitating additional heaters to prevent dew formation.
Innovation Solution
A vacuum glazing design incorporating a metallic frame with a low heat transfer coefficient, optimized shape, and integrated sealant to improve bonding strength and insulating performance, while using a stainless material to prevent corrosion and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick adhesive layer is used to improve bonding strength between glazings, then bonding strength is improved, but heat transfer through the bonding part increases and insulating performance deteriorates
Solution Approach 1:
The patent changes the material parameter of the bonding agent from conventional adhesive to metallic frame material, which has different thermal conductivity properties. The metallic frame maintains bonding strength while reducing heat transfer through the bonding part, resolving the contradiction between bonding strength and heat transfer prevention.
2Strength
If a thick vacuum layer is formed due to thick adhesive, then bonding is improved, but spacer height must be increased leading to instability
Solution Approach 1:
The patent changes the bonding mechanism from thick adhesive bonding to metallic frame bonding, which allows for a thinner effective bonding layer. This reduces the required spacer height while maintaining bonding strength, thereby improving spacer stability and preventing manufacturing defects.
3Reliability
If additional heater is added to prevent dew formation, then dew prevention is improved, but device complexity increases
Solution Approach 1:
The patent converts the harmful heat transfer through the bonding part into a beneficial feature by using metallic frame material with controlled thermal conductivity. The metallic frame naturally prevents dew formation by maintaining appropriate temperature distribution, eliminating the need for additional heaters and reducing device complexity.
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 design enhances thermal insulation, improves bonding strength, and reduces heat transfer at the bonding part, maintaining a stable vacuum state with reduced moisture sensitivity.
Implementation Method 1
the vacuum layer formed between a first glazing and a second glazing
Implementation Method 2
a sealant interposed between the frame and surfaces of the first and second glazings to perform sealing of the vacuum layer
Data Source
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AI summary
A vacuum glazing includes a vacuum layer formed between a first glazing and a second glazing, a spacer provided in the vacuum layer, a frame provided at edge portions of the first and second glazings, and a sealant interposed between the frame and surfaces of the first and second glazings to perform sealing of the vacuum layer. The insulating performance of the vacuum glazing is improved.