Induction Heating Control Unit Pulse Parameter Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing induction heating devices face challenges in achieving uniform heating and efficiency, particularly in pulsed operation modes where continuous heating power is not feasible, leading to inconsistencies in heating performance and comfort.
Innovation Solution
The induction heating device incorporates a control unit that dynamically adjusts pulse parameters such as power, phase duration, and rest phases based on sensor values and operator inputs, allowing for pulsed or continuous operation, ensuring consistent heating power and improved efficiency by optimizing energy delivery through high-frequency alternating current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If induction heating device operates in pulsed mode to deliver high heating power, then heating power delivery is improved, but heating uniformity deteriorates
Solution Approach 1:
The control unit implements periodic pulsed operation of the heating frequency unit, switching between active heating phases and rest phases. This periodic action allows the system to deliver high peak power during active phases while using rest phases to prevent overheating and maintain uniform temperature distribution across the heating zone.
Solution Approach 2:
The control unit dynamically adjusts the pulse parameters including pulse duration, rest phase duration, and pulse repetition frequency based on real-time sensor feedback. This dynamic adaptation enables the system to optimize the balance between delivering sufficient heating power and maintaining temperature uniformity across different cooking conditions and锅具 types.
2Temperature
If heating frequency unit operates continuously to maintain temperature, then temperature stability is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous operation, the heating frequency unit operates in periodic pulses with active heating phases followed by rest phases. This periodic operation maintains temperature stability through cumulative heating effect while significantly reducing energy consumption during rest phases when no power is delivered to the heating element.
Solution Approach 2:
The sensor unit continuously monitors temperature and provides feedback to the control unit, which adjusts the pulse parameters in real-time. This feedback mechanism ensures temperature stability is maintained despite the intermittent heating, as the control unit can extend or shorten pulse durations and adjust pulse frequency based on actual temperature conditions.
3Device complexity
If pulse parameters are fixed to simplify control, then device complexity is reduced, but heating precision deteriorates
Solution Approach 1:
The control unit uses sensor feedback to automatically adjust pulse parameters including pulse duration, rest phase duration, and pulse frequency. This closed-loop control achieves precise heating results by adapting to real-time conditions without requiring complex manual intervention or multiple fixed parameter sets, thereby maintaining acceptable device complexity while improving heating precision.
Solution Approach 2:
The system dynamically changes pulse parameters (duration, frequency, power level) based on sensor feedback and cooking conditions. This parameter adaptation enables precise control of the heating process for different锅具 types, cookware materials, and cooking stages, achieving high heating precision through programmable parameter variation rather than fixed parameters.
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 solution enables a uniform heating process with reduced power losses and increased comfort by dynamically adjusting pulse parameters, achieving efficient energy use and stable network operation, even at higher power levels.
Implementation Method 1
The induction heating unit is supplied with high-frequency alternating current... all induction heating elements of the induction heating unit are supplied with high-frequency alternating current... The induction heating element is intended to convert electrical energy into an alternating magnetic field, which is intended to cause eddy currents and/or magnetic reversal effects in a metallic, preferably at least partially ferromagnetic, heating medium
Implementation Method 2
The induction heating element is intended to convert electrical energy into an alternating magnetic field, which is intended to cause eddy currents and/or magnetic reversal effects in a metallic, preferably at least partially ferromagnetic, heating medium, in particular a cooking utensil, which are converted into heat
Implementation Method 3
The induction heating element is intended to convert electrical energy into an alternating magnetic field, which is intended to cause eddy currents and/or magnetic reversal effects in a metallic, preferably at least partially ferromagnetic, heating medium
Implementation Method 4
The invention is based on an induction heating device, in particular an induction hob device, with at least one heating frequency unit, at least one induction heating unit
Data Source
Figure 1
Figure 2~4
Figure 5~6
AI summary
The device (12) has a control unit (14) defining a set of pulse parameters as a function of a fluctuation of a sensor value of sensing units (40-46), where the sensing units determine temperature of a heating medium or a dish. The control unit is provided in a mode of operation to define the pulse parameters as a function of a curve. The control unit switches the mode of operation between a pulsed operation and a continuous operation as a function of an operator input. Four induction heating units (30-36) are arranged below a cook field plate. An independent claim is also included for a method for operating an induction heating device.