Enamel composition, manufacturing method therefor, and cooking utensils

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Solution Overview

Problem

Existing enamel compositions require high temperatures and soaking in water to effectively clean poultry fat and sugar, necessitating multiple layers and lengthy processes, which is inefficient and energy-intensive.

Innovation Solution

An enamel composition comprising SiO2, B2O3, Li2O, Na2O, K2O, TiO2, ZnO, V2O5, CuO, Co3O4, and CeO2, allowing for the removal of poultry fat and sugar at lower temperatures without soaking in water, using a single layer, thereby enhancing cleaning efficiency and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional enamel composition (P2O5, Group I oxides, Group II oxides) is used, then poultry fat can be cleaned, but soaking in water for at least 30 minutes at 100°C or higher is required

Engineering Contradiction:
Improvecleaning process simplicityVSAvoidsoaking time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent changes the chemical composition parameters of the enamel by incorporating specific catalyst oxides (V2O5, CuO, Co3O4, CeO2) in optimized proportions. This compositional parameter change enables the enamel to catalyze decomposition of organic contaminants at lower temperatures without requiring water soaking, thus resolving the contradiction between cleaning effectiveness and time consumption.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If conventional enamel composition is used, then sugar can be cleaned, but high temperatures of 450°C to 500°C are required

Engineering Contradiction:
Improvecleaning effectivenessVSAvoidcleaning temperature
Core Design Contradiction:
Ease of operationVSTemperature

Solution Approach 1:

The patent modifies the thermal and catalytic parameters of the enamel composition by adding catalyst oxides (V2O5, CuO, Co3O4, CeO2) with optimized content ratios. These catalysts lower the activation energy required for sugar decomposition, enabling effective cleaning at reduced temperatures (below 450°C) while maintaining cleaning effectiveness.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite enamel material combining traditional glass-forming oxides (SiO2, B2O3) with catalyst oxides (V2O5, CuO, Co3O4, CeO2) and metal oxides (ZnO, TiO2). This composite structure provides both the protective enamel properties and the catalytic activity needed to decompose sugar at lower temperatures, resolving the contradiction between cleaning effectiveness and energy consumption.

Inventive Principle:
Principle #40Composite materials

3Ease of operation

If conventional enamel composition is used, then both poultry fat and sugar can be removed, but two layers must be coated

Engineering Contradiction:
Improvecontaminant removal capabilityVSAvoidcoating process complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent develops a universal enamel composition that performs multiple functions simultaneously: it protects the metal substrate, catalyzes decomposition of poultry fat, and catalyzes decomposition of sugar. By incorporating a broad spectrum of catalyst oxides (V2O5, CuO, Co3O4, CeO2) with different catalytic properties, the single-layer enamel can handle multiple contaminant types, eliminating the need for multi-layer coating and simplifying the coating process.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functions of multiple specialized enamel layers into a single composite layer. By combining glass-forming oxides (SiO2, B2O3), metal oxides (ZnO, TiO2), and various catalyst oxides (V2O5, CuO, Co3O4, CeO2) in optimized proportions, the single-layer enamel integrates protection, fat decomposition, and sugar decomposition capabilities, thereby reducing coating complexity while maintaining comprehensive contaminant removal.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of operation

If conventional enamel composition is used, then cleaning can be performed, but excessive time and energy are consumed

Engineering Contradiction:
Improvecleaning capabilityVSAvoidenergy consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent changes the catalytic parameters of the enamel by incorporating catalyst oxides (V2O5, CuO, Co3O4, CeO2) with optimized content ratios. These catalysts increase the reaction rate of contaminant decomposition, allowing the cleaning process to occur at lower temperatures and in shorter times, thereby significantly reducing energy consumption while maintaining cleaning capability.

Inventive Principle:
Principle #35Parameter changes

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 composition enables efficient cleaning of contaminants at reduced temperatures, saving energy and time, while maintaining durability and acid resistance, with improved process efficiency and reduced smoke generation.

Implementation Method 1

a catalyst oxide selected from the group consisting of vanadium oxide, copper oxide, cobalt oxide, and cerium oxide

Methodology Applied
Scientific EffectCatalysis: Catalysis

Implementation Method 2

The inner wall of the cavity can be easily cleaned through a pyrolysis, where contaminants are burned to ashes at high temperatures

Methodology Applied
Scientific EffectPyrolysis: Pyrolysis

Data Source

PatentEP3786122B1Enamel composition, manufacturing method therefor, and cooking utensils
Publication Date: 2023.03.01 LG ELECTRONICS INC
  • EP3786122B1 patent drawingFigure 1

AI summary

The present invention relates to an enamel composition capable of removing sugars as well as poultry oils as contaminants at a low temperature by using a catalyst oxide, to a manufacturing method therefor, and cooking utensils. The present invention provides an enamel composition, a manufacturing method therefor, and cooking utensils, wherein the enamel composition is capable of removing sugars as well as poultry oils as contaminants at a low temperature by comprising: at least one of SiO2, B2O3, Li2O, Na2O, and K2O; and TiO2.