Induction Heating Susceptor Array for Aerosol Substrate Vaporization
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Solution Overview
Problem
Current aerosol generating devices face challenges in rapidly heating aerosol substrates while maintaining energy efficiency, which is crucial for generating a vapor without burning the substrate.
Innovation Solution
The aerosol generating device employs a heating chamber with multiple inductively heatable susceptors spaced around its periphery, combined with a helical induction heating coil and a coil support structure, to efficiently heat the substrate using electromagnetic fields, ensuring rapid and uniform heating while maximizing energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single induction heating coil is used to heat the aerosol generating substrate, then the device structure is simple, but the heating uniformity and speed are insufficient
Solution Approach 1:
The single induction heating coil is segmented into multiple independently controllable coil sections arranged around the heating chamber periphery. Each coil section can be controlled separately to heat different regions of the aerosol generating substrate, thereby increasing heating speed and uniformity while maintaining reasonable system complexity through modular design
2Speed
If heating power is increased to rapidly heat the substrate, then heating speed improves, but energy efficiency decreases
Solution Approach 1:
The induction heating system employs periodic pulsed heating cycles with varying power levels. During vaporization phases, high power is applied to rapidly heat the substrate; during maintenance phases, lower power or idle states are used. This periodic action achieves rapid heating when needed while minimizing energy consumption during steady-state operation, thereby improving overall energy efficiency
Solution Approach 2:
Different regions of the heating chamber are equipped with independently controllable coil sections that apply heating locally where needed. This allows concentrated heating power to be applied only to specific regions requiring vaporization, rather than uniformly heating the entire substrate, thereby reducing overall energy consumption while maintaining rapid heating where required
3Temperature
If heating temperature is increased to generate sufficient vapor, then vapor generation improves, but device heat management becomes difficult
Solution Approach 1:
The heating function is extracted and isolated to specific localized coil sections positioned away from the user's hand. The induction heating coils are mounted on the heating chamber periphery, physically separating the high-temperature generation zone from the user contact zone. This allows high substrate temperatures for effective vapor generation while keeping the device exterior cool to the touch
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 configuration allows for rapid and controlled heating of the aerosol substrate, enhancing energy efficiency and user comfort by maintaining the device cool to the touch, while effectively generating a vapor that cools and condenses into an aerosol for inhalation.
Implementation Method 1
an induction coil is provided in the device and an inductively heatable susceptor is provided to heat the aerosol generating substrate. Electrical energy is supplied to the induction coil when a user activates the device which in turn generates an alternating electromagnetic field. The susceptor couples with the electromagnetic field and generates heat which is transferred, for example by conduction, to the aerosol generating substrate
Implementation Method 2
an induction coil is provided in the device and an inductively heatable susceptor is provided to heat the aerosol generating substrate
Implementation Method 3
The susceptor couples with the electromagnetic field and generates heat which is transferred, for example by conduction, to the aerosol generating substrate
Implementation Method 4
generates a vapour which typically cools and condenses to form an aerosol for inhalation by a user of the device
Data Source
AI summary
An aerosol generating device includes a heating chamber for receiving at least part of an aerosol generating substrate and a plurality of inductively heatable susceptors spaced around a periphery of the heating chamber. An aerosol generating system is also provided herein. The aerosol generating system includes the aerosol generating device in combination with an aerosol generating substrate.