Cooking appliance
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Solution Overview
Problem
Existing cooking appliances lack advanced features for improved operating convenience, efficient cooking processes, and safety measures to prevent overheating of muffle walls, which can lead to damage.
Innovation Solution
A cooking appliance device with a muffle having at least one muffle wall, a heating element for heating the muffle, and multiple sensor units for temperature detection, including a sensor at the hottest point of the muffle wall, along with a control unit to regulate power output based on detected temperatures, allowing for efficient cooking processes and safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a heating element is used to heat the muffle wall, then cooking efficiency is improved, but the muffle wall may overheat and get damaged
Solution Approach 1:
The patent implements a sensor unit that continuously monitors the temperature of the muffle wall and provides feedback to the control unit. The control unit adjusts the heating element's operation based on this feedback, reducing power when the muffle wall approaches a predetermined temperature threshold to prevent overheating and damage, thus maintaining both cooking efficiency and muffle wall durability
Solution Approach 2:
The control unit dynamically changes the heating parameter (power output) based on the detected temperature. When the muffle wall temperature approaches the threshold, the control unit reduces the heating power, and when it drops below the threshold, the power is increased again, creating a dynamic parameter adjustment that prevents damage while maintaining cooking efficiency
2Measurement precision
If temperature sensors are placed inside the cooking chamber, then cooking temperature monitoring is improved, but the muffle wall temperature cannot be directly measured
Solution Approach 1:
The patent uses the muffle wall itself as an intermediary medium. The sensor unit is integrated into the muffle wall structure, allowing direct measurement of the muffle wall temperature. The control unit uses this direct measurement to infer the cooking chamber temperature and adjust heating accordingly, eliminating the need for separate internal sensors while maintaining both measurement capabilities
3Reliability
If the sensor unit continuously monitors muffle wall temperature, then safety is improved, but energy consumption increases
Solution Approach 1:
The sensor unit performs periodic temperature measurements rather than continuous monitoring. The control unit activates the sensor at intervals to check the muffle wall temperature, adjusting the heating element operation based on these periodic readings. This approach maintains safety through regular monitoring while significantly reducing energy consumption compared to continuous operation
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 solution provides enhanced operating convenience, efficient cooking, and safety by preventing overheating, enabling optimal heating of the muffle wall and ensuring optimal cooking results through precise temperature control and power regulation.
Implementation Method 1
at least one heating element (18), which is provided for heating the muffle wall (14)
Implementation Method 2
at least one sensor unit (20), which is provided for detection of at least one temperature of the muffle wall (14)
Data Source
AI summary
A cooking appliance device, in particular induction cooking appliance device, includes a muffle which has a muffle wall and is configured to define at least partially a cooking chamber. A heating element is provided to heat the muffle wall, with a first sensor unit detecting a temperature of the muffle wall.