Induction Cooktop Coil Installation Verification via Electrical Parameter Analysis
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Solution Overview
Problem
Induction cooktops with multiple cooking zones face issues due to incorrect installation of coils with different diameters, leading to inadequate heating and potential permanent damage, resulting in consumer complaints and increased malfunction reports.
Innovation Solution
The induction cooktop employs a control unit that determines correct coil installation through characteristic information and configuration data retrieval from internal or external recording media, using drive signals to analyze current attenuation and phase differences, enabling automatic verification without manual control during production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual verification of coil installation is used during production, then installation accuracy is improved, but production time and labor costs increase
Solution Approach 1:
The induction cooktop performs self-verification of coil installation by automatically retrieving characteristic information from the coil's identification, measuring electrical parameters, and comparing them against expected values. This self-service approach eliminates the need for manual verification while maintaining high installation accuracy.
Solution Approach 2:
The system performs verification measurements during the production process itself, before the product leaves the manufacturing line. By incorporating the verification function into the cooktop's own diagnostic capabilities, the system enables preliminary checking without requiring separate manual inspection steps.
2Reliability
If structural precautions are added to prevent coil installation errors, then reliability is improved, but production costs increase
Solution Approach 1:
The system provides immediate feedback during the installation process by measuring electrical parameters and comparing them against stored characteristic information. If a mismatch is detected, the system can alert operators or even prevent the product from leaving the production line, ensuring high reliability without adding complex physical constraints.
Solution Approach 2:
The patent uses an intermediary approach by introducing identification elements (such as RFID tags or barcodes) on the coils and corresponding verification software in the control unit. This intermediary system mediates between the physical coil and the installation process, enabling automatic verification without requiring complex structural modifications to the cooktop itself.
3Adaptability or versatility
If coils with different diameters are used for different cooking zones, then adaptability is improved, but the risk of erroneous installation increases
Solution Approach 1:
Each coil is equipped with local identification information (such as unique IDs or characteristic parameters stored in memory) that distinguishes it from other coils. The control unit retrieves and verifies this local information to ensure each coil is installed in the correct position, maintaining adaptability while preventing erroneous installation.
Solution Approach 2:
The system uses parameter changes in the electrical characteristics (such as inductance, resistance, or resonant frequency) of different coils as verification criteria. By measuring these parameters and comparing them against expected values for each cooking zone, the system can automatically verify correct installation without requiring manual identification.
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
Ensures accurate coil installation for each cooking zone, preventing errors and potential damage, reducing production costs and consumer complaints by providing a self-diagnostic service mode for correct coil placement verification.
Implementation Method 1
the cooktops that provide the heating of the ferromagnetic based cooking vessels by induction method
Implementation Method 2
heating of the ferromagnetic based cooking vessels by induction method
Data Source
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AI summary
The present invention relates to an induction cooktop (1) comprising at least one cooking zone (2) suitable for heating a cooking vessel placed thereon, an electrical connection part (4) that enables the coil (3) forming each cooking zone (2) to be detachably installed, a generator (5) that provides the driving of the coil (3) through the respective electrical connection part (4) and a control unit (6) that enables the generator (5) to be controlled. The control unit (6) has a normal operating mode wherein the cooking vessel is heated and a service mode wherein it is determined whether or not a coil (3) is correctly installed to the electrical connection part (4) whereto it is intended to be installed and/or whether or not the coil (3) is defective.