Cooker Enamel Coating with Phosphate for High-Temperature Cleaning

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional cooking chambers are difficult to clean due to food residue adherence.

Innovation Solution

A cooker with an enamel coating layer containing phosphorus pentoxide on its inner surface and a high-temperature cleaning water supply system, controlled by a unit that operates the heating and cleaning apparatus to efficiently remove food residues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional cooking chamber is used, then the cooking function is provided, but the cooking chamber is difficult to clean due to food residue adherence

Engineering Contradiction:

Improveease of cleaningVSAvoidfood residue adherence

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by modifying the chemical composition of the coating layer on the cooking chamber inner surface. The coating contains phosphorus pentoxide (P2O5) at a specific content range (1-30 wt%), which changes the surface properties to reduce food residue adherence. This chemical parameter modification enables easy cleaning while maintaining the cooking function.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by creating an enamel coating layer that combines multiple components: silicate base material, phosphorus pentoxide (P2O5), and other auxiliary ingredients. This composite coating structure provides both the necessary durability for cooking chamber application and the specific anti-adhesion properties that facilitate easy cleaning.

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If an enamel coating layer with phosphorus pentoxide is applied, then food residues can be easily removed, but the manufacturing complexity increases

Engineering Contradiction:

Improveease of cleaningVSAvoidcoating application complexity

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

The patent specifies precise parameter ranges for the coating formulation to balance manufacturing feasibility with cleaning performance. The phosphorus pentoxide content is controlled at 1-30 wt%, and the coating thickness is maintained at 50-200 μm. These parameter specifications ensure that the coating can be applied using conventional enamel coating processes while achieving the desired anti-adhesion effect.

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 enamel coating facilitates easy removal of food residues, and the high-temperature cleaning water effectively cleans the cooking chamber, maintaining its cleanliness.

Implementation Method 1

an enamel coating layer which is positioned on an inner surface of the cooking chamber and includes a phosphorus pentoxide (P 2 O 5 ) ingredient

Methodology Applied

Scientific EffectPhosphorus pentoxide chemical property:

Implementation Method 2

a heating source that provides heat for cooking food inside the cooking chamber

Methodology Applied

Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 3

a cleaning apparatus that supplies cleaning water to the inside of the cooking chamber

Methodology Applied

Scientific EffectFluid flow:

Data Source

PatentEP2326881B1cooker

Publication Date: 2017.12.06 LG ELECTRONICS INC

Figure 1
Figure 2~3
Figure 4~5

AI summary

An enamel coating including a phosphate-based ingredient is provided on an inner surface of a cooking chamber and the inner surface of the cooking chamber is cleaned using high-temperature cleaning water. Therefore, the cleaning of the cooking chamber can be performed more efficiently.