Vehicle Oven Airflow Profiling for Uniform Heating
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Solution Overview
Problem
Conventional vehicle ovens, such as those in aircraft, experience unequal airflows resulting in uneven heating of food due to varying airflow velocities across different regions, leading to inconsistent cooking outcomes.
Innovation Solution
The oven design incorporates a fan to circulate air across a heating element and utilizes profile elements, such as fins or hole patterns, on the interior surfaces to redirect airflow uniformly throughout the compartment, ensuring more even heat distribution by guiding air back towards the fan from the front region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a fan is used to circulate air across the heating element, then air circulation is improved, but airflow uniformity deteriorates due to varying velocities in different regions
Solution Approach 1:
The patent applies local quality by incorporating profile elements (fins, blades, or hole patterns) at specific locations on the panel to modify airflow characteristics in different regions. These elements are strategically positioned to redirect high-velocity air from the fan into lower-velocity regions, creating locally adjusted flow patterns that achieve overall uniformity while maintaining high circulation speed.
2Device complexity
If a flat panel is used at the front region, then device complexity is reduced, but airflow distribution uniformity deteriorates
Solution Approach 1:
The patent employs profile elements with hole patterns that create a porous-like structure on the panel surface. These holes allow air to pass through and be redirected into specific regions, achieving uniform airflow distribution without requiring a completely complex three-dimensional structure. The porous configuration provides airflow control while maintaining relative structural simplicity.
3Stability of the object's composition
If profile elements are added to the panel, then airflow uniformity is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the panel surface into multiple zones with different profile element configurations. Each zone contains specific patterns of fins, blades, or holes that address the airflow characteristics of that particular region. This segmented approach achieves comprehensive airflow uniformity across the entire oven while keeping each individual panel section relatively simple in design.
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 achieves more uniform airflow and temperature distribution within the oven, effectively addressing the issue of uneven heating and ensuring that meals are cooked consistently across all regions, even in double ovens or those with multiple meal carriers.
Implementation Method 1
a fan disposed in fluid communication with the interior of the compartment. The fan is operable to cause air to flow across the heating element and toward a front region of the compartment
Implementation Method 2
a heating element operable to heat air within the interior of the compartment
Data Source
AI summary
An oven includes a compartment enclosed on all sides and defining an interior therein, a heating element operable to heat air within the interior of compartment, and a fan disposed in fluid communication with the interior of the compartment. The fan is operable to cause air to flow across the heating element and toward the front region of the compartment. The oven includes a plurality of profile elements disposed on a panel at the front region of the compartment. The profile elements are structurally configured to direct air received at the panel from the fan back toward the fan through the interior of the oven in a more uniform spatial distribution than would result from a flat panel.