Induction-Heated Aerosol Control Using Multi-Mode Susceptor Feedback
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Solution Overview
Problem
Inductive heating systems for aerosol-generating devices face challenges in accurately monitoring and controlling susceptor temperature without direct electrical connection, leading to overheating risks and inconsistent aerosol generation.
Innovation Solution
An inductively heated aerosol-generating system with a controller that operates in multiple modes, including calibration, heating, re-calibration, and safety modes, to monitor and control susceptor temperature using electrical control parameters, ensuring precise temperature management and fault mitigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If inductive heating is used to heat the susceptor without direct electrical connection, then contactless heating is achieved, but accurate temperature monitoring becomes difficult
Solution Approach 1:
The controller monitors an electrical control parameter (such as impedance, current, or voltage) of the inductive heating arrangement and uses this feedback to determine the temperature of the susceptor. The controller adjusts the power supplied to the inductor based on this feedback to maintain the susceptor at a desired temperature, enabling accurate temperature monitoring without direct contact with the susceptor.
Solution Approach 2:
The electrical control parameter acts as an intermediary to indirectly measure the susceptor temperature. Instead of directly measuring temperature, the system monitors electrical parameters that correlate with temperature changes, allowing temperature determination without direct thermal or electrical contact with the susceptor.
2Device complexity
If inductive heating is used without a dedicated temperature sensor, then system complexity is reduced, but temperature control accuracy deteriorates
Solution Approach 1:
The controller performs multiple functions: it controls the power supplied to the inductor, monitors the electrical control parameter, determines the susceptor temperature, and adjusts power to maintain desired temperature. This multi-functionality eliminates the need for a separate dedicated temperature sensor while maintaining temperature control accuracy.
Solution Approach 2:
The controller continuously monitors the electrical control parameter and uses this feedback to adjust the power supplied to the inductor, enabling accurate temperature control without requiring additional sensing components.
3Stability of the object's composition
If the susceptor temperature is not accurately controlled, then aerosol generation consistency is poor, but overheating risks increase
Solution Approach 1:
The controller monitors the electrical control parameter and adjusts the power supplied to the inductor to maintain the susceptor at a desired temperature, preventing both overheating and inconsistent aerosol generation through continuous feedback control.
Solution Approach 2:
The controller dynamically adjusts the power supplied to the inductor based on real-time monitoring of the electrical control parameter, allowing the system to adapt to changing conditions and maintain optimal temperature for consistent aerosol generation while preventing overheating.
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 system provides reliable and consistent aerosol generation by accurately controlling susceptor temperature, reducing overheating risks, and improving user experience through precise temperature regulation.
Implementation Method 1
The inductor generates an alternating magnetic field that causes heating in the susceptor
Implementation Method 2
inductive heating arrangements that is configured to heat an aerosol-forming substrate to produce an aerosol
Implementation Method 3
heat is transferred from the susceptor to the aerosol-forming substrate primarily by conduction
Data Source
Figure 1~2B
Figure 3
Figure 4~5
AI summary
An induction heated aerosol-generating system comprises an inductive heating arrangement having an inductor and a susceptor, a power source for supplying power to the inductive heating arrangement, and a controller configured to control power supplied from the power source to the inductive heating arrangement, and to monitor an electrical control parameter. The controller is configured to operate the aerosol-generating system in a plurality of operational modes, the plurality of operational modes including at least; a calibration mode, a heating mode, a re-calibration mode, and a safety mode. By switching between the plurality of operational modes, the system allows consistent and reliable production of an aerosol using induction heating, even where the susceptor is a disposable component of the inductive heating arrangement.