Catalytic Oven Filter Control for Smoke and Odor Reduction
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Solution Overview
Problem
Cooking apparatuses generate unpleasant smells and inner wall contamination due to the formation of combustion oxide, oil mist, and water vapor during cooking, and the pyro-cleaning process produces noxious gases and smoke, which is inefficient and inconvenient.
Innovation Solution
A cooking apparatus equipped with a filter and metal foam that collects and decomposes cooking gases, featuring a corrugated metal sheet with a catalyst layer and a porous structure, and a control unit that regulates temperature for effective cleaning and deodorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pyro-cleaning process is used to remove inner wall contamination, then cleaning effectiveness is improved, but noxious gas and smoke generation increases
Solution Approach 1:
The patent extracts the harmful combustion process from the cleaning function by introducing a separate deodorization mode. The filter unit captures noxious gases and smoke generated during pyro-cleaning, separating the cleaning effectiveness from harmful byproduct generation. This allows the pyro-cleaning process to continue effectively while the filter removes the harmful emissions.
Solution Approach 2:
The filter unit acts as an intermediary between the pyro-cleaning process and the cooking chamber environment. It intercepts and removes noxious gases and smoke before they can contaminate the cooking space, mediating between the high-temperature cleaning process and the user environment to eliminate harmful effects while preserving cleaning benefits.
2Object-generated harmful factors
If filter is installed to collect cooking gas, then odor removal is improved, but device complexity increases
Solution Approach 1:
The filter unit is designed to perform multiple functions: it filters cooking gases during normal operation, captures noxious emissions during pyro-cleaning, and can be integrated with existing ventilation systems. This multi-functionality justifies the added structural complexity by providing comprehensive odor and gas management across different operational modes.
Solution Approach 2:
The filter unit can be nested within existing ventilation ducts or integrated into the cooking chamber structure. By nesting the filtration system within available spaces rather than adding entirely separate components, the patent minimizes the increase in device complexity while still achieving effective gas collection and odor removal.
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 apparatus effectively reduces contamination and odors by decomposing cooking gases and smoke, improving the cleanliness and comfort of the cooking environment while minimizing the generation of noxious fumes during the cleaning process.
Implementation Method 1
a metal foam configured to collect and decompose cooking gas
Implementation Method 2
The metal sheet may include a catalyst sheet made of at least one platinum metal element selected from the group consisting of platinum (Pt), rubidium (Rd), and rhodium (Rh)
Implementation Method 3
a filter configured to collect combustion gas or smoke, and a method of controlling the same
Data Source
AI summary
A method of controlling a cooking apparatus includes a cleaning process which includes controlling a temperature in a cooking chamber such that the temperature in the cooking chamber is maintained at a preset first temperature for a preset first time, and controlling a temperature in a cooking chamber such that the temperature in the cooking chamber is maintained at a preset second temperature higher than the first temperature for a preset second time.