Coffee Roasting Pan With Differential Rotation for Uniform Heating
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Solution Overview
Problem
Microwave heating in cooking appliances results in uneven heating due to unpredictable intensity variations, necessitating improved methods for consistent food item heating.
Innovation Solution
A cooking appliance with a rotating hub and stirrer rod system that rotates the cooking pan and stirrer rod at different speeds to redistribute and mix food items during cooking, enhancing heating consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If microwave radiation is used for heating food items, then cooking speed is improved, but heating uniformity deteriorates
Solution Approach 1:
The patent implements a rotating pan assembly that continuously rotates food items during microwave heating. This dynamic movement redistributes food items across different microwave field intensity zones, preventing localized overheating and ensuring uniform heating throughout the cooking process while maintaining high cooking speed.
Solution Approach 2:
The invention introduces rotational movement as a new dimension of motion to the traditional static heating process. By adding this rotational degree of freedom, food items are systematically exposed to varying microwave fields from multiple positions, transforming the heating process from spatially static to dynamically multi-positioned, thereby achieving uniform heating.
2Manufacturing precision
If food items are rotated during cooking, then heating uniformity is improved, but device complexity increases
Solution Approach 1:
The patent combines the heating function and rotation function into a single integrated cooking appliance. The rotating pan assembly is incorporated directly into the microwave oven structure, merging the microwave generation system with the mechanical rotation system. This integration avoids the need for separate equipment and reduces overall system complexity while achieving uniform heating.
Solution Approach 2:
The cooking appliance is designed with multi-functionality, serving both as a microwave heater and a rotating stirrer. The same device structure performs dual functions: generating microwave radiation for heating and mechanically rotating food items for uniform distribution. This universal design eliminates the need for additional specialized equipment.
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 system ensures more uniform heating of food items by promoting even distribution and mixing, addressing the inherent unevenness of microwave heating.
Implementation Method 1
a microwave module mounted within the cabinet. The microwave module is positioned and configured for delivering microwave energy into the cooking chamber
Implementation Method 2
a motor and a rotating hub mounted to the motor whereby the motor drives rotation of the rotating hub
Implementation Method 3
The pan rotates at a first speed and the stirrer rod rotates at a second speed different from the first speed
Data Source
AI summary
A cooking appliance and a roasting assembly configured to be removably mounted within such cooking appliance are provided. The roasting assembly includes a pan defining an internal volume. The pan is configured to be rotatably mounted on a floor of a cooking chamber of the cooking appliance. The roasting assembly also includes a stirrer rod positioned within the internal volume of the pan. The stirrer rod is configured to be coupled to a rotating hub of the cooking appliance whereby the stirrer rod rotates with the rotating hub. The pan rotates at a first speed and the stirrer rod rotates at a second speed different from the first speed.