Cooking Appliance Input Calibration Using Heating Rate Detection
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Solution Overview
Problem
Cooking appliances often experience suboptimal performance due to mismatched fuel or electrical input, such as using liquefied petroleum instead of natural gas or line voltages different from the designed voltage, leading to user error and increased costs from manual determination and additional circuitry for automatic detection.
Innovation Solution
A method and system that calibrate cooking appliances by generating heat, measuring temperature signals, determining the heating rate, classifying the input based on this rate, and selecting optimal settings to match the detected fuel type or voltage, using a controller with a temperature sensor to automatically adjust settings for optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual determination of fuel type or line voltage is used, then device complexity is reduced, but reliability deteriorates due to user error
Solution Approach 1:
The cooking appliance automatically determines the fuel type or line voltage by monitoring its own heating rate during a calibration cycle, without requiring external detection devices or user intervention. The controller performs self-diagnosis by comparing the observed heating rate against expected rates for different fuel types or voltages, enabling the system to self-configure optimal settings.
2Reliability
If additional circuitry is added for automatic detection, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces physical detection circuitry with a thermal-based detection method. Instead of using electrical sensors or additional hardware to detect fuel type or voltage, the system uses the heating element itself as a detection tool by measuring the heating rate of an object or air, converting a thermal process into a detection mechanism.
Solution Approach 2:
The heating element serves dual functions: it acts as both the cooking heating source and the detection tool for determining fuel type or line voltage. The temperature sensor similarly serves both monitoring cooking temperature and detecting input conditions, eliminating the need for separate detection hardware.
3Device complexity
If manual calibration is performed, then device complexity is reduced, but productivity deteriorates due to time-consuming installation
Solution Approach 1:
The system performs automatic calibration during the initial installation phase by executing a calibration cycle that determines fuel type or line voltage before normal cooking operations begin. This preliminary automatic detection eliminates the need for subsequent manual calibration steps, streamlining the installation process.
4Device complexity
If automatic detection without additional circuitry is implemented, then device complexity is reduced, but measurement precision may deteriorate
Solution Approach 1:
The system uses feedback from the temperature sensor to continuously monitor the heating rate during the calibration cycle. The controller adjusts and refines the determination of fuel type or line voltage based on the actual measured heating rate, comparing it against expected values to achieve accurate detection without additional precision hardware.
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 approach reduces user error, simplifies installation, and optimizes cooking performance without additional circuitry, enabling automatic detection of fuel type or voltage, thus enhancing cooking appliance efficiency and reducing costs.
Implementation Method 1
providing an input to a heating element of the cooking appliance to generate heat at or within the cooking appliance
Implementation Method 2
receiving a plurality of signals from the temperature sensor that are indicative of a temperature of an object or air at or within the cooking appliance
Data Source
AI summary
A method and system are provided or determining a fuel or gas type input into a fuel system or a voltage input into an electrical system of a cooking appliance. For instance, the cooking appliance may be a cooktop appliance or an oven appliance. Particularly, a calibration cycle may be performed in which the heating rate of an object or air at or within the cooking appliance is determined. Based on the determined heating rate, the input may be classified. That is, based on the heating rate, the gas type or input voltage into the cooking appliance may be determined. Further, based on the classified input, the settings of the cooking appliance may be selected for optimal cooking performance.