Catalytic Enamel Composition for Low-Temperature Oven Cleaning
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Solution Overview
Problem
Conventional enamel compositions require high temperatures for pyrolysis, leading to energy inefficiency and potential weakening of the enamel coating, and involve complex soaking processes for removing oil-based contaminants, making the cleaning process cumbersome and energy-intensive.
Innovation Solution
An enamel composition comprising 20-50% SiO2, 7-12% B2O3, 10-20% NaF, 1-10% ZnO, and 10-40% TiO2, which can be melted and quenched at lower temperatures, allowing for effective cleaning of contaminants at 350-380°C and removing oil-based contaminants at room temperature without water soaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional enamel composition is used for pyrolysis cleaning, then cleaning function is achieved, but high temperature (450-500°C) is required which weakens enamel coating durability and increases energy consumption
Solution Approach 1:
The patent modifies the chemical composition parameters of the enamel coating by incorporating specific metal oxides (TiO2 at 40-70 wt%, ZnO at 5-30 wt%, MoO3 at 2-15 wt%) to change the pyrolysis temperature parameter from 450-500°C down to 350-380°C, thereby resolving the contradiction between cleaning effectiveness and coating durability
Solution Approach 2:
The patent creates a composite enamel material combining multiple metal oxides (titanium oxide, zinc oxide, molybdenum oxide, silicon oxide, boron oxide) with specific ratios to achieve synergistic effects that enable low-temperature pyrolysis while maintaining coating integrity and durability
2Reliability
If conventional enamel composition is used for pyrolysis cleaning, then cleaning function is achieved, but huge energy consumption is required
Solution Approach 1:
By changing the chemical composition parameters to include catalystic metal oxides (TiO2, ZnO, MoO3), the pyrolysis temperature parameter is reduced from 450-500°C to 350-380°C, which directly reduces the energy consumption for the cleaning process while maintaining effective contaminant removal
3Reliability
If conventional enamel composition is used, then pyrolysis cleaning is achieved, but soaking process with water is required for predetermined time to remove oil-based contaminants, making cleaning process complicated
Solution Approach 1:
The enamel coating with modified composition enables oil-based contaminants to be removed automatically at room temperature without requiring water soaking or additional cleaning steps, allowing the coating to serve its own cleaning function and eliminating process complexity
4Reliability
If high temperature heating is used for prolonged time, then pyrolysis cleaning is achieved, but durability of enamel coating is weakened
Solution Approach 1:
The patent changes the thermal parameter by reducing the operating temperature from 450-500°C to 350-380°C through compositional modification, which extends the service life of the enamel coating by reducing thermal stress and degradation while maintaining effective cleaning through catalytic pyrolysis
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 new enamel composition enables energy conservation, reduces cleaning time, and simplifies the cleaning process while maintaining excellent thermal and chemical resistance, enhancing the durability and cleaning performance of cooking appliance surfaces.
Implementation Method 1
a pyrolysis method of reducing contaminants to ashes by combusting at a high temperature
Implementation Method 2
one or more of lithium superoxide (Li2O), sodium oxide (Na2O), or potassium oxide (K2O), and 10 to 20% by weight of sodium fluoride (NaF), 1 to 10% by weight of zinc oxide (ZnO), and one or more of molybdenum oxide (MoO3), bismuth oxide (Bi2O3), or cerium dioxide (CeO2), and 10 to 40% by weight of titanium dioxide (TiO2)
Implementation Method 3
An enamel composition comprising 20-50% SiO2, 7-12% B2O3, one or more of Li2O, Na2O, or K2O, and 10 to 20% by weight of sodium fluoride (NaF)
Implementation Method 4
enamel is a glassy glaze applied to a surface of a metal plate
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 20 to 50% by weight of silicon dioxide (SiO2), 7 to 12% by weight of boron oxide (B2O3), one or more of lithium superoxide (Li2O), sodium oxide (Na2O), or potassium oxide (K2O), and 10 to 20% by weight of sodium fluoride (NaF), 1 to 10% by weight of zinc oxide (ZnO), and one or more of molybdenum oxide (MoO3), bismuth oxide (Bi2O3), or cerium dioxide (CeO2), and 10 to 40% by weight of titanium dioxide (TiO2). With such an enamel composition, cleaning is possible in a heating condition of a relatively low temperature and without a soaking process using water.