Enamel composition, preparation method of enamel composition, and cooking appliance
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Solution Overview
Problem
Cooking appliances require enamels with improved heat resistance, chemical resistance, abrasion resistance, and contamination resistance to facilitate easy cleaning, especially in high-temperature and alkaline environments, which existing enamels struggle to provide effectively.
Innovation Solution
A glass enamel composition comprising P2O5, TiO2, and group I-based oxides, which forms a hydrophilic and durable functional layer that can be easily cleaned with water-soaking, eliminating the need for additional buffer layers and reducing energy consumption, while maintaining high thermal properties and opacity for a white color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional enamel compositions are used, then heat resistance and chemical resistance are maintained, but cleanability is poor and requires high-temperature pyrolysis or strong alkaline detergents
Solution Approach 1:
The patent modifies the chemical composition parameters of the enamel by incorporating specific ratios of P2O5 (20-40 wt%), TiO2 (10-30 wt%), and group I-based oxides (15-35 wt%), which changes the surface properties to be hydrophilic while maintaining thermal and chemical stability through proper compositional balance
Solution Approach 2:
The patent creates a composite enamel material combining multiple components (P2O5, TiO2, group I-based oxides, SiO2, Al2O3) that work synergistically to provide both hydrophilic cleanability and high-temperature resistance, with each component contributing specific properties to the overall composite structure
2Shape
If multiple types of frit are mixed to achieve white color, then color quality is improved, but manufacturing complexity and process time increase
Solution Approach 1:
The patent combines multiple functional requirements (white color, hydrophilicity, heat resistance) into a single integrated frit composition rather than mixing multiple separate frits, eliminating the need for complex mixing processes while achieving all desired properties in one material layer
Solution Approach 2:
The single frit composition serves multiple functions simultaneously: providing white color through TiO2, hydrophilic properties through P2O5 and group I-based oxides, and heat resistance through the overall glass matrix composition, replacing what would traditionally require multiple specialized frits
3Reliability
If buffer layer is added between enamel and metal substrate, then adhesion is improved, but production process complexity and coating thickness increase
Solution Approach 1:
The patent removes the intermediate buffer layer from the coating structure by designing an enamel composition that can directly adhere to the metal substrate through its own chemical composition, eliminating unnecessary structural complexity while maintaining adhesion through optimized chemical bonding properties
4Object-generated harmful factors
If high-temperature pyrolysis or strong alkaline detergents are used for cleaning, then contamination removal is effective, but energy consumption and chemical usage increase
Solution Approach 1:
The patent converts the hydrophilic property (which attracts water) into a beneficial cleaning mechanism where water can easily wet and remove contaminants from the surface, transforming what is typically considered a disadvantage of hydrophilic surfaces into an advantage for self-cleaning applications
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 enamel composition enhances cleanability, durability, and energy efficiency, allowing for effective removal of contaminants like oil and sugars with reduced energy and time, while maintaining heat resistance and chemical durability, thus improving the overall cleaning process and production efficiency.
Implementation Method 1
a glass enamel composition comprising P2O5, TiO2, and group I-based oxides, which forms a hydrophilic and durable functional layer that can be easily cleaned with water-soaking
Data Source
Figure 1~2
Figure 3~6
AI summary
The present invention provides an enamel composition comprising frit including P2O5, TiO2 and group I-based oxide, wherein P2O5 is contained in an amount of 20 wt% to 30 wt% based on the total weight of the frit, wherein TiO2 is contained in an amount of 10 wt% to 20 wt% based on the total weight of the frit, wherein the group I-based oxide is contained in an amount of 15 wt% to 30 wt% based on the total weight of the frit.