Cooking Chamber Air Outlet Layout for Even Heating
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Solution Overview
Problem
Conventional cooking apparatuses using convection heat face issues with uneven cooking due to direct air discharge, leading to incomplete heating of food, and the generation of foreign substances at outlet holes.
Innovation Solution
A cooking apparatus with a discharge plate featuring spirally arranged outlet holes with flanges, a blocking part, and a driving mechanism for tray rotation, ensuring high-temperature air collides evenly with food and preventing foreign substance accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-temperature air is discharged through outlet holes in a conventional manner, then the cooking apparatus can heat food, but the cooking is uneven and foreign substances are generated at the outlet holes
Solution Approach 1:
The outlet hole is divided into multiple functional zones: a discharge region for air ejection, a blocking part to prevent foreign substance accumulation, and a flange structure with groove for debris collection. This segmentation allows each zone to perform its specific function, preventing foreign substances from entering the outlet hole while maintaining effective air discharge for even cooking.
Solution Approach 2:
The flange structure acts as an intermediary element between the discharge plate and the cooking chamber. It provides a physical barrier that prevents foreign substances from reaching the outlet hole while allowing high-temperature air to pass through. The groove in the flange serves as an intermediate collection zone for any debris, preventing it from blocking the air discharge path.
2Productivity
If high-temperature air directly collides with food, then cooking time is reduced, but cooking evenness is poor
Solution Approach 1:
The outlet structure implements local quality by creating different flow characteristics at different locations. The flange structure directs air flow to collide with the food surface at optimal angles, while the blocking part ensures uniform distribution. This localized optimization allows direct collision for speed while achieving even cooking across the entire food surface.
3Device complexity
If outlet holes are formed without flange structure, then the structure is simple, but foreign substances accumulate at the outlet holes
Solution Approach 1:
The flange structure with groove is designed as a preliminary protective feature that proactively prevents foreign substance accumulation before it can block the outlet holes. The groove creates a designated collection zone for debris, and the flange protrusion blocks the path to the outlet hole, preventing accumulation in advance and maintaining consistent air discharge.
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
Enhances cooking performance by reducing cooking time and ensuring even heating across the entire food surface while preventing foreign substance generation at outlet holes.
Implementation Method 1
a convection device for supplying convection heat are provided to heat food in various methods... The convection device cooks the food using the convection heat. The convection device is configured to discharge high-temperature air into a cooking chamber
Implementation Method 2
Each flange comprises a flange groove formed at a part of an outer surface of the discharge plate, wherein each flange is formed at a lower surface of the respective flange groove protruding in a direction opposite to a discharging direction of the air from the outlet holes
Data Source
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AI summary
In accordance with an embodiment of the present disclosure, a cooking apparatus includes a casing, a cooking chamber provided inside the casing and including a discharge plate at which a plurality of outlet holes are formed, a tray provided at a bottom surface of the cooking chamber to support food, and a hot air discharging unit configured to discharge high-temperature air into the cooking chamber through the outlet holes, wherein the plurality of outlet holes are formed at a first area facing the tray.