Oven Plasma Cleaning With Ozone Feedback for Residue Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cooking apparatuses face issues with residue contamination and unpleasant odors due to oil stains, requiring high-temperature heating or chemical detergents for residue removal, which increase energy consumption and risk damage to the cooking chamber's coating.
Innovation Solution
A cooking apparatus equipped with a plasma discharger that generates plasma to decompose residues, using a configuration of electrodes and a dielectric, and includes a sensor to prevent excessive ozone release, ensuring effective residue removal and maintaining a clean environment while minimizing health risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-temperature heating is used to remove residues, then residue removal effectiveness is improved, but energy consumption increases
Solution Approach 1:
The invention changes the physical-chemical state of the cleaning process from thermal (high-temperature heating) to plasma state. By applying radio frequency power to generate plasma in the cooking chamber, residues are decomposed through plasma chemical reactions rather than thermal decomposition, thereby achieving effective residue removal without the high energy consumption associated with heating the entire chamber to high temperatures.
2Reliability
If high-temperature heating is used to remove residues, then residue removal effectiveness is improved, but the cooking apparatus cannot be used until heating is complete
Solution Approach 1:
The invention transitions from thermal heating to plasma generation, which occurs much more rapidly. Plasma can be generated and deactivated almost instantaneously by controlling the radio frequency power supply, allowing the cooking apparatus to switch between cooking and cleaning modes without the lengthy heating and cooling cycles required by thermal methods, thus minimizing downtime.
3Reliability
If detergent is used to remove residues, then residue removal effectiveness is improved, but the coating layer of the wall surface may be damaged
Solution Approach 1:
The invention replaces chemical cleaning methods (detergent application) with a physical-chemical plasma process. Plasma consists of ionized gas containing reactive species that decompose organic residues through oxidation and fragmentation reactions, eliminating the need for chemical detergents that could damage the cooking chamber's protective coating layer while still achieving effective residue removal.
4Use of energy by moving object
If plasma discharger is used to remove residues, then energy consumption is reduced and coating layer is protected, but ozone generation may pose health risks
Solution Approach 1:
The invention incorporates an ozone concentration sensor that continuously monitors the plasma treatment chamber and provides feedback to the control system. When the sensor detects ozone concentration exceeding a predetermined safe level, the control system automatically adjusts or shuts off the plasma generation, thereby preventing harmful ozone accumulation while maintaining effective residue removal at safe operating levels.
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 plasma discharger effectively decomposes food residues, maintains a clean cooking chamber with reduced energy consumption, and prevents excessive ozone release, ensuring user safety and efficient operation.
Implementation Method 1
a plasma discharger provided in the case and configured to generate plasma in order to remove residue from a surface of the case
Implementation Method 2
a dielectric provided between the first and second electrodes
Data Source
AI summary
A cooking apparatus includes a case in which a cooking chamber for cooking food is provided, a heating source provided in the case, a fan configured to circulate air in the cooking chamber; and a plasma discharger provided in the case and configured to generate plasma in order to remove residue from a surface of the case.