Induction Heating Circuit Frequency Processing Unit
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Solution Overview
Problem
Induction cooking devices require complex and costly heater circuits with many heating frequency units, leading to high assembly effort and inefficiencies due to high current intensities and variability in voltage and power supply.
Innovation Solution
A simplified heater circuit design featuring a frequency processing unit connected to multiple heating frequency units, which generates a common heating frequency, reduces components and assembly complexity, and includes a rectifier for stable power supply and a frequency filtering unit for electromagnetic compatibility, allowing flexible operation with a matrix arrangement of heating modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple heating frequency units are used to provide flexible heating operation, then the adaptability and heating coverage are improved, but the device complexity and assembly effort increase significantly
Solution Approach 1:
The patent merges multiple heating frequency units under a single frequency processing unit that generates and distributes the heating frequency signal to all units. This consolidation reduces the overall system complexity while maintaining the ability to operate multiple heating elements flexibly, as the frequency processing unit acts as a central controller that simplifies the connections between individual heating frequency units.
2Power
If high current intensities are used to power heating frequency units, then the power delivery capability is improved, but the reliability and stability of voltage supply deteriorate
Solution Approach 1:
The patent introduces a frequency processing unit as an intermediary between the power supply and the heating frequency units. This intermediate device processes and stabilizes the voltage and current before delivering it to the heating elements, thereby maintaining power delivery capability while improving voltage supply stability and reducing the impact of high current intensities on system reliability.
3Device complexity
If a frequency processing unit is assigned to multiple heating frequency units, then the device complexity is reduced, but the power handling capability of the frequency processing unit becomes a limiting factor
Solution Approach 1:
The patent segments the power handling function by assigning the frequency processing unit to manage multiple heating frequency units that operate at different power levels simultaneously. The frequency processing unit handles the frequency generation and distribution, while the power delivery is managed through the individual heating frequency units, effectively dividing the power handling burden while maintaining system simplicity.
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
The solution achieves a structurally simple, cost-effective, and flexible heating system with reduced assembly effort, ensuring high homogeneity and compliance with electromagnetic compatibility standards, enabling efficient heating of various cookware sizes across a large hotplate surface.
Implementation Method 1
the frequency processing unit incorporates a rectifier. This makes it possible to provide a rectified signal that is common to the heating frequency units
Implementation Method 2
A heating frequency unit expediently generates an electrical signal that oscillates with the heating frequency and is used to power a radiator, which uses this signal to transmit heating energy to an object to be heated
Implementation Method 3
These include radiators which, during operation, transmit a heating signal with a heating frequency to an object to be heated
Data Source
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AI summary
The invention relates to a heating device circuit, in particular an induction cooking device circuit, comprising a set of heat frequency units (28) for generating a heating frequency and at least one frequency processing unit (52) for modifying at least one signal frequency (50, 56) and that is disposed upstream of the heat frequency unit (28). The aim of the invention is to provide a constructively simple and economical heating device circuit. At least three heat frequency units (28) are associated with said frequency processing unit (52).