Induction Heating Power-Supply Control Against Circuit Overheating
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Solution Overview
Problem
Existing induction heating devices face challenges in efficiently controlling power supply to prevent overheating and damage to the power supply circuit due to variations in cooking vessel materials and user input power settings.
Innovation Solution
An electronic apparatus with a user interface, induction heating coil, power supply circuit, and processor that adjusts power supply based on target power settings and input power differences, using sensors to monitor and control the power supply circuit to prevent excessive current and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the power supply circuit supplies power at high target power settings, then cooking efficiency and heating speed are improved, but the risk of overheating and damage to the power supply circuit increases
Solution Approach 1:
The control processor continuously monitors the input power of the power supply circuit and compares it with the target power. When the difference exceeds a predetermined threshold, the system automatically adjusts the target power downward, creating a closed-loop feedback mechanism that prevents overheating while maintaining efficient operation under normal conditions
Solution Approach 2:
The target power is not fixed but dynamically adjusted based on real-time input power conditions. The system transitions from a static high-power setting to a dynamic adjustment mechanism that adapts power levels according to actual electrical conditions, preventing circuit damage while optimizing cooking performance
2Power
If the power supply circuit operates at maximum power capacity, then heating performance is improved, but the system becomes vulnerable to power fluctuations and circuit damage
Solution Approach 1:
The system proactively monitors input power before damage occurs and takes preventive action by adjusting target power downward when thresholds are exceeded. This preliminary anti-action prevents the harmful effect of circuit overheating and damage before it can manifest, rather than reacting after damage occurs
Solution Approach 2:
The system converts the potentially harmful situation of power mismatches into a beneficial adaptive control mechanism. By detecting power differences and automatically adjusting target power, the system turns what could be damaging power fluctuations into opportunities for optimized safe 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
Effectively manages power supply to prevent overheating and damage, ensuring safe and efficient operation by adjusting power settings based on input and target power differences.
Implementation Method 1
an induction heating coil configured to induce a magnetic field on the cooking plate
Implementation Method 2
a secondary current is induced to the cooking vessel, and joule heat may be generated by a resistance component of the cooking vessel itself
Data Source
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AI summary
An electronic apparatus is provided. The electronic apparatus includes a user interface, a cooking plate on which a cooking vessel can be placed, an induction heating coil configured to induce a magnetic field on the cooking plate, a power supply circuit configured to supply power to the induction heating coil, memory storing one or more computer programs, and one or more processors communicatively coupled to the user interface, the cooking plate, the induction heating coil, and the power supply circuit, wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors cause the electronic apparatus to control the power supply circuit based on a first target power for heating the cooking vessel, and control, based on a difference between a first input power of the power supply circuit and the first target power being greater than or equal to a predetermined value, the power supply circuit based on a second target power corresponding to the first input power of the power supply circuit.