Double Oven Airflow Separation for Combustion and Cabinet Cooling
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Solution Overview
Problem
In dual-range or double oven products, existing technologies face challenges in providing adequate airflow for efficient combustion and cooling, often using a single airflow path that fails to effectively manage airflow requirements for upper and lower combustion and cooling pathways.
Innovation Solution
The implementation of a dual airflow passageway system within a gas double oven, where a first passageway provides combustion air to the upper oven cavity and cooling air to the cabinet, and a second passageway, separated by a barrier member, provides combustion air to the lower oven cavity, isolating airflow paths to enhance combustion and cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single airflow path is used to feed all three airflow requirements (upper combustion, lower combustion, and cooling) in a double oven, then the device complexity is reduced, but the combustion efficiency and cooling performance deteriorate due to insufficient dedicated airflow for each pathway
Solution Approach 1:
The patent divides the airflow system into three separate airflow paths: first airflow path for upper oven combustion, second airflow path for lower oven combustion, and third airflow path for cooling. This segmentation ensures each pathway receives adequate dedicated airflow, resolving the contradiction between device simplicity and combustion reliability by organizing complexity into functional modules.
Solution Approach 2:
The patent provides different airflow characteristics to different locations within the double oven. Each combustion zone receives optimized airflow through dedicated paths with appropriate inlet positions and flow rates, while the cooling pathway receives separate airflow control. This local optimization ensures reliable combustion performance in each zone without requiring a completely complex unified system.
2Device complexity
If a single airflow path is used to serve all combustion and cooling requirements, then the manufacturing cost and structural complexity are reduced, but the cooling performance deteriorates due to inadequate dedicated cooling airflow
Solution Approach 1:
The cooling airflow is segregated into a dedicated third airflow path that is separate from the combustion airflow paths. This segmentation allows independent control and optimization of cooling airflow, ensuring adequate cooling performance without adding excessive complexity to the overall system architecture.
Solution Approach 2:
The patent introduces separate airflow pathways that act as intermediaries between the external environment and the internal combustion/cooing zones. These intermediary paths allow controlled airflow delivery to meet both combustion and cooling requirements independently, resolving the contradiction between simple structure and effective cooling.
3Device complexity
If airflow paths are not separated, then the device structure is simpler and easier to manufacture, but the combustion performance deteriorates due to insufficient dedicated combustion air for each burner
Solution Approach 1:
The patent segments the airflow delivery system into distinct paths for upper combustion, lower combustion, and cooling functions. Each combustion pathway is dedicated to a specific burner zone, ensuring adequate combustion air supply without requiring overly complex unified airflow management, thus maintaining productivity while controlling device complexity.
Solution Approach 2:
Each combustion zone is provided with locally optimized airflow characteristics through dedicated airflow paths. The first airflow path delivers appropriate air quantity and distribution to the upper burner, while the second airflow path does the same for the lower burner, ensuring high combustion performance without excessive system complexity.
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
This solution ensures improved airflow management, allowing for efficient combustion in both oven cavities and effective heat management, maintaining acceptable temperatures and improving overall oven performance.
Implementation Method 1
A first airflow passageway provides combustion air to the first oven cavity and cooling air within the cabinet
Implementation Method 2
a sufficient amount of air must be available to fully combust the gas emitted from the burner
Data Source
AI summary
A cooking appliance has a cabinet including a front portion, opposing side panels, a base portion, a back panel and a top surface. First and second oven cavities are disposed within the cabinet. Each of the first and second oven cavities include respective sidewall portions maintained in a spaced apart relationship from the opposing side panels. A first airflow passageway provides combustion air to the first oven cavity and cooling air within the cabinet and a second airflow passageway provides combustion air to the lower cavity. The second airflow passageway is separated from the first airflow passageway.