Oven With Ceramic Base And Microwave Heating

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Solution Overview

Problem

Conventional ovens lack the ability to quickly and evenly heat diverse food items like pizzas and sandwiches while ensuring safety and quality, as they often rely on a single heating source, which limits control over temperature distribution and cooking time.

Innovation Solution

The oven incorporates a combination of heating elements, including a radiant base element and a microwave source, with independent temperature control systems and air circulation, utilizing a ceramic base and a metal body with apertures to optimize heat transfer and distribution, allowing for precise control of temperatures within the oven cavity and on the ceramic base.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a single heating source is used, then the oven structure is simple, but the heating speed and temperature distribution are insufficient

Engineering Contradiction:
Improveheating speedVSAvoidheating system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent combines multiple heating sources (radiant base element, overhead element, and microwave source) into a single integrated heating system. This merging of heating functions allows the oven to achieve fast and even heating of diverse food items while maintaining a unified structural design, directly resolving the contradiction between heating speed and system complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The heating system is designed with multi-functionality, where the radiant base element, overhead element, and microwave source can operate independently or in combination to handle different food types and heating requirements. This universal heating capability enables the oven to quickly and evenly heat various foods without requiring separate specialized equipment for each food type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If a single temperature control system is used, then the control system is simple, but the temperature distribution control is insufficient

Engineering Contradiction:
Improvetemperature control precisionVSAvoidcontrol system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The control system is segmented into independent temperature control mechanisms for different heating zones. The radiant base element has its own temperature sensor and control, the overhead element has separate control, and the microwave source is independently controllable. This segmentation allows precise control of temperature distribution across different areas of the oven cavity, resolving the contradiction between temperature control precision and system complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each heating element operates with its own temperature control parameters, allowing local quality control of temperature in different zones of the oven cavity. The first temperature sensor monitors the radiant base element temperature while the second temperature sensor monitors the oven cavity temperature, enabling differentiated temperature control for different spatial locations to achieve optimal heating for various food types.

Inventive Principle:
Principle #3Local quality

3Loss of time

If conventional heating methods are used, then the cooking time is long, but the food quality and safety are compromised

Engineering Contradiction:
Improvecooking timeVSAvoidfood safety and quality
Core Design Contradiction:
Loss of timeVSReliability

Solution Approach 1:

The patent utilizes microwave radiation to induce molecular vibration and phase transitions in food materials, enabling rapid heating and cooking. The microwave source generates electromagnetic radiation that directly energizes water molecules and other polar molecules in the food, causing rapid molecular motion and heat generation from within the food itself. This phase transition-based heating mechanism dramatically reduces cooking time while maintaining food safety and quality through uniform internal heating.

Inventive Principle:
Principle #36Phase transitions

Solution Approach 2:

The patent replaces conventional mechanical heating methods (conduction and convection only) with electromagnetic radiation heating. The microwave source substitutes for traditional heating mechanisms by using electromagnetic energy to directly heat food molecules, eliminating the need for prolonged exposure to external heat sources. This substitution enables faster cooking while improving food safety through more uniform and controlled heat penetration.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 configuration enables faster, more even, and safer cooking of various food types by allowing independent control of temperatures, reducing cooking time, and enhancing the quality of cooked food through simultaneous or phased use of multiple heating means.

Implementation Method 1

the base element is at least one radiant element

Methodology Applied
Scientific EffectThermal radiation: Thermal Radiation

Implementation Method 2

the means for heating comprises an oven element provided in a top section of the oven, a base element provided in a base section of the oven and a microwave source

Methodology Applied
Scientific EffectMicrowave radiation: Microwave Radiation

Implementation Method 3

the oven comprises means for providing air circulation

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentUS20240237165A9Oven
Publication Date: 2024.07.11 TURBOCHEF TECHNOLOGIES LLC
  • US20240237165A9 patent drawing
  • US20240237165A9 patent drawing
  • US20240237165A9 patent drawing

AI summary

An oven defines an oven cavity for receiving a food product for heating and comprises a housing, a door for closing the oven cavity, means for heating, means for providing air circulation, means for measuring temperature and a controller for controlling the operation of the heating means and the operation of the means for measuring temperature, wherein the means for heating comprises an oven element provided in the top section of the oven, a base element provided in the base of the oven and a microwave source, the oven cavity has a base which is ceramic and defines a heating surface which is heated by the base element in use of the oven, the base element is a radiant element, the housing comprises a floor section located between the ceramic base of the oven cavity and the base element, the floor section comprises a metal body provided with apertures, the metal body lying over the base element, the means for measuring temperature comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is located in the base section of the oven and is located between the base element and the metal body, the second temperature sensor is located in the oven cavity remote from the ceramic base, and the controller is configured to control independently the temperature of the ceramic base and the temperature within the oven cavity.