Multi-Coil Induction Heating for Uniform Aerosol Substrate Heating

The single heating coil is divided into multiple coils (first coil and second coil) that are positioned at different locations. Each coil independently heats a specific region of the aerosol-generating substrate, ensuring comprehensive and uniform coverage. This segmentation resolves the contradiction by transforming a simple but ineffective single-coil structure into a multi-coil system that achieves uniform heating.

Different regions of the aerosol-generating substrate are heated by different coils with potentially different winding numbers and heating characteristics. The first coil heats a first region while the second coil heats a second region, allowing each region to receive optimized local heating. This local quality approach ensures uniform overall heating while maintaining structural complexity at manageable levels.

The controller adjusts the operating parameters (such as current intensity, pulse duration, or switching frequency) of each coil based on their different winding numbers and positional characteristics. By dynamically changing these parameters, the system compensates for the complexity introduced by multiple coils and achieves uniform heating across the substrate.

The controller implements feedback control by monitoring the heating status of different regions and adjusting the coil activation patterns accordingly. This feedback mechanism manages the control system complexity by automating the coordination of multiple coils, ensuring uniform heating without requiring manual intervention or overly complex control logic.

The heating task is segmented across multiple coils that operate simultaneously or sequentially on different regions of the substrate. This distribution of heating load maintains high overall heating efficiency while preventing any single region from receiving excessive power that could cause burning. Each coil operates at a moderate power level, ensuring temperature control consistency.

The controller employs periodic or pulsed activation patterns for the coils, switching them on and off in a controlled sequence. This periodic action maintains high heating efficiency by ensuring continuous heat input across different regions while preventing overheating and burning through controlled duty cycles. The alternating activation also helps distribute thermal energy more evenly.