Mechanical Switch Coil Control for Faster Cooktop Switching
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Solution Overview
Problem
Cooking appliances, particularly cooktops, face challenges in switching speed and reliability due to temperature dependence and spontaneous heating, which affect efficiency and cost-effectiveness.
Innovation Solution
A cooking appliance apparatus with a mechanical switch and driver coil, where the switching operation is divided into two time subranges, with the driver coil operated differently in each, using a control unit to supply varying mean coil voltages and control signals, optimizing switching speed and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver coil is operated with constant mean coil voltage during switching operation, then the switching operation is simple to control, but the switching speed is insufficient and temperature dependence affects reliability
Solution Approach 1:
The switching operation is divided into two distinct time subranges: a first time subrange where the driver coil is operated with a first mean coil voltage, and a second time subrange where it is operated with a second mean coil voltage. This segmentation allows optimized control for different phases of the switching operation, improving both switching speed and reliability while minimizing temperature dependence effects.
2Productivity
If the mechanical switch operates at high speed, then productivity is improved, but temperature dependence and spontaneous heating increase reducing reliability
Solution Approach 1:
The driver coil is operated with alternating mean coil voltages during different time subranges of the switching operation. This periodic variation in operating conditions allows the mechanical switch to maintain high-speed operation while minimizing the accumulation of thermal effects that cause spontaneous heating and temperature dependence, thereby improving reliability without sacrificing productivity.
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 enhances switching speed, minimizes temperature dependence, reduces spontaneous heating, and improves efficiency while lowering costs.
Implementation Method 1
at least one driver coil, which is provided at least for the purpose of initiating at least one switching operation of the at least one armature element
Implementation Method 2
The high-frequency heating current is provided in particular to heat, in particular cookware, in particular by means of eddy current and/or magnetization change effects
Implementation Method 3
The high-frequency heating current is provided in particular to heat, in particular cookware, in particular by means of eddy current and/or magnetization change effects
Data Source
AI summary
A cooking appliance apparatus includes at least one mechanical switch having at least one armature element and at least one driver coil, with the at least one driver coil being configured to at least initiate at least one switching operation of the at least one armature element. At least one mean coil voltage is supplied by at least one driver circuit configured for the at least one driver coil. A control unit supplies at least one control signal for controlling the at least one driver circuit. The control unit is configured to divide the at least one switching operation into at least one first time subrange and at least one second time subrange and to operate the at least one driver coil differently via the at least one driver circuit in the first and second time subranges.