Combustion Windowpane Light-Blocking Coating for Heat Crack Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing windowpanes for combustion apparatuses face issues with crack formation due to heat and inadequate light-blocking properties, which fail to sufficiently hide gaskets or adhesives, impacting design quality and functionality.
Innovation Solution
A windowpane with a light-blocking layer containing 30-50% inorganic pigment powder and 50-70% glass powder, having a thickness of 1-10 μm and an average particle size of 0.8 μm or less, applied to the peripheral portion of a transparent crystallized glass plate, using a Cr—Fe—Co—Ni-based pigment for enhanced thermal shock resistance and improved light-blocking properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light-blocking layer contains a relatively large amount of inorganic pigment to improve light-blocking property, then the light-blocking ability improves, but the layer becomes porous and cracks are less likely to occur due to heat
Solution Approach 1:
The patent optimizes the particle size parameter of inorganic pigment powder to 0.8 μm or less, and controls the thickness parameter of the light-blocking layer to 1-10 μm. These parameter changes enable the layer to achieve sufficient light-blocking property while maintaining crack resistance through reduced porosity and improved structural integrity.
Solution Approach 2:
The light-blocking layer is formed as a composite material containing both inorganic pigment powder and glass powder. This composite structure combines the light-blocking capability of pigment particles with the thermal stability and crack resistance of glass matrix, resolving the contradiction between light-blocking performance and thermal reliability.
2Illumination intensity
If the light-blocking layer is made dense to improve appearance and light-blocking property, then the light-blocking ability improves, but cracks are more likely to occur with prolonged use due to heat
Solution Approach 1:
The patent controls the particle size of inorganic pigment powder at 0.8 μm or less and the layer thickness at 1-10 μm. These parameter optimizations create a balanced structure that achieves adequate light-blocking without excessive density, thereby preventing crack formation under thermal stress while maintaining sufficient light-blocking performance.
Solution Approach 2:
The patent utilizes a controlled porous structure in the light-blocking layer formed by the composite of inorganic pigment and glass powder. This controlled porosity allows the layer to absorb thermal stress without cracking while maintaining sufficient light-blocking property, resolving the contradiction between density and crack resistance.
3Shape
If the light-blocking layer is made thin to maintain appearance quality, then the appearance improves, but the light-blocking property becomes insufficient and gaskets or adhesives cannot be hidden
Solution Approach 1:
The patent optimizes the particle size of inorganic pigment powder to 0.8 μm or less and controls the layer thickness to 1-10 μm. These parameter changes increase the filling rate of pigment particles within the thin layer, thereby achieving sufficient light-blocking property while maintaining excellent appearance quality and thin profile.
Solution Approach 2:
The light-blocking layer is applied specifically to the peripheral portion of the transparent crystallized glass plate where gaskets and adhesives are located. This localized application ensures adequate light-blocking for hiding fastening components while maintaining the overall transparency and appearance quality of the windowpane.
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 solution effectively reduces crack occurrence and spots due to heat or water, while providing sufficient light-blocking to hide gaskets or adhesives, maintaining the windowpane's appearance and thermal shock resistance.
Implementation Method 1
the light-blocking layer can sufficiently hide an adhesive, a gasket or the like
Implementation Method 2
The windowpane needs to be transparent to visible light
Implementation Method 3
have high thermal shock resistance
Data Source
AI summary
Provided is a windowpane for a combustion apparatus in which a light-blocking layer containing an inorganic pigment powder and a glass powder is formed on a surface of a transparent crystallized glass plate and the light-blocking layer can sufficiently hide an adhesive, a gasket or the like used to fix the windowpane to the body of the combustion apparatus and which can reduce the occurrence of cracks due to heat in the light-blocking layer. A windowpane for a combustion apparatus in which a light-blocking layer containing an inorganic pigment powder and a glass powder is formed on a surface of a transparent crystallized glass plate, wherein the light-blocking layer contains 30 to 50% by mass of the inorganic pigment powder and 50 to 70% by mass of the glass powder and has a thickness of 1 to 10 μm and the inorganic pigment powder has an average particle size of 0.8 μm or less.