Combination Heating System for Uniform Cooking
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Solution Overview
Problem
Existing cooking appliances lack efficiency and uniformity in cooking a wide range of food items, particularly open-faced grilled sandwiches, which require multiple heat sources and result in non-uniform heating and prolonged cooking times.
Innovation Solution
A compact cooking appliance combining radiant, convection, and microwave heating techniques, with a blower-driven convection system, multiple microwave devices, and a catalyst for air circulation and exhaust management, allowing for flexible operational modes and enhanced heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a dual radiant oven is used to heat open-faced sandwiches, then heat can be directed onto the sandwich, but the cooking process becomes time-consuming and produces non-uniform heating
Solution Approach 1:
The patent combines radiant heating elements, convection heating elements, and microwave heating devices into a single cooking appliance. This merging of multiple heating techniques allows the system to simultaneously heat different portions of the sandwich using appropriate methods, achieving uniform heating and reducing overall cooking time compared to using a single radiant oven.
Solution Approach 2:
The cooking appliance is designed with multiple heating systems that can operate independently or in combination, making it universally applicable to various food items and cooking requirements. The system can switch between or combine radiant, convection, and microwave heating modes to optimize cooking performance for different foods, including open-faced sandwiches.
2Productivity
If multiple heating techniques are combined in a compact appliance, then versatility and cooking speed improve, but device complexity increases
Solution Approach 1:
The patent integrates radiant heating elements, convection heating elements, and microwave heating devices into a single compact appliance structure. By merging these different heating systems into one unit, the patent achieves high cooking speed and versatility while managing the complexity through unified design and shared components such as a common oven cavity and control system.
3Ease of manufacture
If conventional radiant heating is used, then the appliance structure remains simple, but cooking efficiency and versatility are limited
Solution Approach 1:
The patent combines multiple heating techniques (radiant, convection, and microwave) into a single appliance, achieving superior cooking efficiency and versatility. The system maintains relative structural simplicity by integrating these heating methods into a unified design with shared components, rather than requiring separate appliances for each heating type.
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
Enables rapid and uniform cooking of various food items by synergistically combining heating techniques, reducing cooking time and improving heat distribution, making it suitable for diverse culinary applications.
Implementation Method 1
a radiant heating element exposed to the oven cavity
Implementation Method 2
a blower having a convection fan
Implementation Method 3
an additional convection heating element directly exposed to an airflow generated by the convection fan
Implementation Method 4
multiple microwave heating devices having associated antennae or stirrers
Implementation Method 5
then through a catalyst and finally into the oven cavity through a plurality of downwardly exposed nozzles
Data Source
AI summary
A combination cooking appliance controls a radiant heating element provided in an oven cavity, both a blower and a convection heating element provided in an air plenum, and microwave energy sources to provide for numerous potential operating modes. The present invention is particularly concerned with the manner in which the various cooking components are configured and flexibly controlled to provide for short cook cycles in a variety of operational modes.