Convection Oven Airflow Layout for Cleaner High-Capacity Cooking
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Solution Overview
Problem
Conventional cooking devices, such as oven ranges, face issues with contamination, cleaning difficulties, and reduced cavity capacity due to the open bottom surface and placement of the lower burner, which complicates maintenance and operation.
Innovation Solution
A cooking device design featuring a frame with a partitioning plate that separates the cooking chamber from an air flow chamber, incorporating a burner and fan in the air flow chamber, with strategically positioned air outlets to direct heated air efficiently and prevent contamination, while allowing for increased cavity capacity by relocating the burner assembly to the rear or sidewall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the lower burner is installed in the burner chamber under the oven chamber, then air can be heated and circulated into the oven chamber, but the bottom surface of the oven chamber must be open causing food leftovers to contaminate the burner chamber
Solution Approach 1:
The patent divides the internal space into separate cooking chamber and burner chamber using a partitioning plate, allowing independent access and cleaning of each chamber while maintaining their functional connection through air flow paths
Solution Approach 2:
The partitioning plate acts as an intermediary structure that enables air flow between chambers while preventing direct access of food leftovers to the burner chamber, solving both heating and contamination issues
2Productivity
If the lower burner is installed in the burner chamber under the oven chamber, then convection heating can be achieved, but the oven chamber becomes difficult to clean due to the open bottom surface
Solution Approach 1:
The partitioning plate creates a sealed bottom surface for the cooking chamber while maintaining the burner chamber below, allowing the cooking chamber to be cleaned easily without exposing the burner chamber to food debris
3Productivity
If the lower burner is installed under the oven chamber, then convection heating is provided, but the cavity capacity is reduced by the burner installation space
Solution Approach 1:
The burner chamber is positioned in the vertical dimension below the cooking chamber rather than occupying horizontal space, maximizing the cooking chamber capacity while maintaining convection heating functionality
4Productivity
If the lower burner is installed at the outer side of the oven chamber, then heating can be provided, but the outer case must be separated to replace or check the ignition unit making operations complicated and time-consuming
Solution Approach 1:
The burner chamber is designed as a separate, accessible compartment that can be opened independently from the outer case, allowing easy maintenance of the ignition unit and burner components without disassembling the entire appliance
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 design enhances food heating uniformity, prevents contamination, simplifies maintenance by eliminating the need for opening the bottom surface, and increases the cooking chamber's capacity by relocating the burner assembly, thereby improving operational efficiency and cleanliness.
Implementation Method 1
a burner which cooks the food in the oven chamber by burning a gas
Implementation Method 2
a lower burner which convectively heats food in the oven chamber
Data Source
AI summary
A cooking device comprises a frame including supporting parts to support a tray on which food is put; a partitioning plate to divide an inner space of the frame into a cooking chamber and an air flow chamber; a burner in the air flow chamber; and a fan in the air flow chamber, wherein the partitioning plate includes an air inlet to introduce air inside the cooking chamber into the air flow chamber, and air outlets to discharge air heated by the burner in the air flow chamber to the cooking chamber, and the air outlets include a first air outlet and a second air outlet located at a lower level than the first air outlet, at least a part of the second air outlet is located at a lower level than the tray while the tray is supported by a lowermost supporting part of the supporting parts.