Induction-heating cooker
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Solution Overview
Problem
Conventional induction heating cookers with multi-coil structures face challenges in usability due to the difficulty in using high-performance temperature sensors with wide detectable ranges, limiting their ability to accurately detect and respond to varying placement positions and sizes of objects to be heated.
Innovation Solution
The induction heating cooker employs a plurality of temperature sensors with different detectable temperature ranges, which are recognized by the heating controller and displayed on the operation display unit, allowing users to identify the appropriate sensor and execute corresponding heating operations, thereby improving usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single high-performance temperature sensor with wide detectable range is used, then temperature detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent divides the temperature detection function into multiple segments by using several temperature sensors with different detectable ranges instead of one sensor. Each sensor covers a specific temperature range, and the system selects the appropriate sensor based on the detected temperature, thereby achieving wide-range accurate detection without requiring a single complex high-performance sensor.
Solution Approach 2:
The patent changes the parameter of temperature range coverage by employing multiple sensors with different detectable temperature ranges. The system dynamically selects which sensor to use based on the current temperature conditions, optimizing detection accuracy for each temperature level while avoiding the complexity of a single wide-range high-performance sensor.
2Adaptability or versatility
If multiple temperature sensors with different detectable ranges are used, then adaptability to various placement positions is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by assigning different detectable temperature ranges to different temperature sensors positioned at various locations. Each sensor is optimized for its specific placement position and local temperature characteristics, allowing the system to adapt to various object placement positions while maintaining manageable complexity through localized optimization.
3Loss of information
If the cookware detector displays detailed icon information, then user awareness of placement conditions is improved, but ease of operation decreases due to complexity
Solution Approach 1:
The patent implements feedback by displaying icon information on the operation display unit that reflects the detection results of the cookware detector. This provides users with immediate visual feedback about placement conditions, helping them understand the system's state without requiring complex interactions. The feedback mechanism maintains ease of operation by presenting information in an intuitive visual format.
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 enhances usability by enabling accurate temperature detection and menu selection based on the recognized sensor, allowing users to place objects appropriately and perform heating operations effectively, regardless of their position on the top plate.
Implementation Method 1
an induction heating cooker that inductively heats one object to be heated by one heating coil
Implementation Method 2
a plurality of heating coils that are disposed below the top plate and inductively heat the object to be heated
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
An induction heating cooker includes: a top plate on which an object to be heated is placed; a plurality of heating coils (4) that are disposed below the top plate and inductively heat the object to be heated; a plurality of temperature sensors (6) disposed below the top plate and having different characteristics from one another; an object-to-be-heated detector that detects a placement area where the object to be heated is placed; a heating controller that controls an operating state of at least one of the plurality of heating coils corresponding to a placement area detected by the object-to-be-heated detector based on a temperature detected by at least one of the plurality of temperature sensors (6); an operation unit operated by a user; and a display unit, wherein the heating controller is configured to recognize a temperature sensor located below a placement area detected by the object-to-be-heated detector from among the plurality of temperature sensors (6), and display information set in advance for temperature sensor (6) recognized by the heating controller on the display unit.