Induction Cooker Coil Power Allocation via Segmented External Supplies
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Solution Overview
Problem
Existing induction heating cookers face limitations in efficiently managing power distribution to multiple coils, leading to suboptimal magnetic field output and heating performance, especially when the load is concentrated on specific coils.
Innovation Solution
A cooking apparatus with multiple coils, inverters, rectifiers, and switches, controlled by a controller that dynamically allocates power from external power supplies to optimize the magnetic field output by connecting coils to the appropriate power sources based on their load requirements, ensuring maximum power delivery to coils with concentrated loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power is supplied from a single external power supply to multiple coils, then the device complexity is reduced, but the magnetic field output and heating efficiency deteriorate when load is concentrated on specific coils
Solution Approach 1:
The external power supply system is segmented into multiple independent power supplies (first external power supply and second external power supply), each capable of independently powering specific coils. This segmentation allows the system to distribute power based on load requirements, ensuring that coils with concentrated loads receive sufficient power from dedicated power supplies, thereby resolving the contradiction between device complexity and magnetic field output.
2Power
If power is dynamically allocated from multiple external power supplies to coils based on load requirements, then the magnetic field output and heating efficiency are improved, but the device complexity and control complexity increase
Solution Approach 1:
The power distribution system is made dynamic through the controller, which automatically adjusts the connection between external power supplies and coils based on real-time load detection. The controller monitors the load on each coil and dynamically switches power supply connections to optimize magnetic field output. This dynamic adaptation resolves the contradiction by enabling intelligent power allocation without requiring manual intervention or overly complex fixed wiring configurations.
3Productivity
If multiple external power supplies are used to supply power to coils, then the heating efficiency and cooking performance are improved, but the ease of operation and installation deteriorate
Solution Approach 1:
The system incorporates self-service functionality through automatic load detection and power supply selection. The controller automatically detects which coils have concentrated loads and independently connects the appropriate external power supplies to those coils without requiring manual configuration or user intervention. This self-service capability resolves the contradiction by enabling optimized heating efficiency while maintaining ease of operation, as the system autonomously manages the complex power distribution tasks.
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 enhances the magnetic field output and heating efficiency by ensuring that coils with higher loads receive maximum power, thereby improving cooking performance and energy utilization.
Implementation Method 1
an induction heating cooker is a cooking appliance for heating a cooking vessel using the principle of induction heating for cooking. The induction heating cooker may include a cooking table on which a cooking vessel is put, and a coil configured to generate a magnetic field using an electric current. When the current is applied to the coil to generate a magnetic field, a secondary current is induced in the cooking vessel, and joule heat is generated by the electrical resistance component of the cooking vessel itself.
Implementation Method 2
a plurality of inverters configured to supply a drive current to the first, second third and fourth coils
Implementation Method 3
a plurality of rectifiers configured to supply direct current (DC) power to the plurality of inverters
Data Source
AI summary
Disclosed herein is a cooking apparatus and a control method thereof. The cooking apparatus includes first and second coils arranged in a first column, third and fourth coils arranged in a second column, a plurality of inverters configured to supply a drive current to the first, second third and fourth coils, a plurality of rectifiers configured to supply direct current (DC) power to the plurality of inverters, a plurality of switches configured to connect each of the plurality of rectifiers to any one of a first external power supply and a second external power supply, and a controller configured to control the plurality of switches wherein the first external power supply supplies power to at least one of the first, second, third, and fourth coils and the second external power supply supplies power to at least one of the first, second, third, and fourth coils.