Enamel composition, method for preparing enamel composition, and cooking appliance
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Solution Overview
Problem
Conventional enamel compositions for cooking appliances require high temperatures and lengthy pyrolysis processes for cleaning, consuming significant energy and complicating the cleaning process, while also experiencing durability issues at high temperatures.
Innovation Solution
An enamel composition with a specific ratio of SiO2, B2O3, alkali metal oxides, ZnO, and metal oxides (TiO2, MoO3, Bi2O3, CeO2) that allows for efficient cleaning at lower temperatures and room temperature oil removal without water soaking, enhancing heat resistance and chemical durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional enamel composition is used for pyrolysis cleaning, then cleaning function is achieved, but energy consumption increases and cleaning time extends
Solution Approach 1:
The patent modifies the chemical composition parameters of the enamel coating by incorporating specific metal oxides (TiO2, MoO3, Bi2O3, CeO2) in optimized ratios. These compositional changes enable the enamel to catalyze the decomposition of organic contaminants at lower temperatures (200-400°C), dramatically reducing energy consumption while maintaining effective cleaning capability
Solution Approach 2:
The patent creates a composite enamel material combining traditional glass-forming oxides (SiO2, B2O3) with catalytically active metal oxides. This composite structure provides both the protective functions of conventional enamel and the low-temperature decomposition capabilities of catalytic materials, achieving efficient cleaning at reduced energy input
2Productivity
If conventional enamel composition is used for pyrolysis cleaning, then cleaning function is achieved, but cleaning process complexity increases due to water soaking requirement
Solution Approach 1:
The patent extracts and eliminates the water soaking step from the cleaning process by endowing the enamel coating with intrinsic catalytic decomposition capability. The modified enamel directly decomposes oil contaminants through chemical catalysis at low temperatures, removing the need for separate water-based cleaning operations and simplifying the overall cleaning procedure to a single low-temperature heating step
3Productivity
If high temperature pyrolysis is applied for cleaning, then contaminant removal is effective, but enamel durability deteriorates
Solution Approach 1:
The patent changes the operating temperature parameter from conventional high-temperature pyrolysis (450-500°C) to low-temperature catalytic decomposition (200-400°C). This temperature reduction prevents thermal degradation and denaturation of the enamel coating while the added metal oxides provide catalytic activity sufficient for effective contaminant decomposition at the lower temperature
Solution Approach 2:
The patent develops a composite enamel system where traditional heat-resistant glass phases protect the substrate while embedded metal oxide catalysts (TiO2, MoO3, Bi2O3, CeO2) provide low-temperature decomposition functionality. This composite structure enables effective cleaning at temperatures that preserve enamel integrity and durability
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 novel enamel composition reduces energy consumption and cleaning time, improves adhesion to metal surfaces, and simplifies the cleaning process by enabling effective contaminant removal at lower temperatures and eliminating the need for water soaking, while maintaining high durability and chemical resistance.
Implementation Method 1
one or more of titanium dioxide (TiO2), molybdenum oxide (MoO3), bismuth oxide (Bi2O3), or cerium dioxide (CeO2) at 20 to 40 wt %
Data Source
AI summary
An enamel composition, a method for preparing an enamel composition, and a cooking appliance are provided. The enamel composition may include silicon dioxide (SiO2) at 25 to 50 wt %; boron oxide (B2O3) at 1 to 15 wt %; one or more of lithium superoxide (Li2O), sodium oxide (Na2O), or potassium oxide (K2O) at 10 to 20 wt %; sodium fluoride (NaF) at 1 to 5 wt %; zinc oxide (ZnO) at 1 to 10 wt %; and one or more of titanium dioxide (TiO2), molybdenum trioxide (MoO3), bismuth oxide (Bi2O3), or cerium dioxide (CeO2) at 20 to 40 wt %, such that a heating time required for cleaning is shortened and cleaning is possible without carrying out a water soaking process.