Induction Heating Coil Zonal Control for Aerosol Substrates
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Solution Overview
Problem
Current aerosol generating devices face challenges in accurately controlling heat distribution within the aerosol generating substrate, which affects the consistency and quality of the aerosol generated for inhalation.
Innovation Solution
The aerosol generating device employs a single induction coil with selectively energizable coil sections and inductively heatable susceptors, allowing for zonal heating through controlled electromagnetic field generation, enabling precise heat distribution and multiple heating modes for optimized aerosol production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single induction coil is used to heat the aerosol generating substrate, then the device complexity is reduced, but the heat distribution control precision deteriorates
Solution Approach 1:
The single induction coil is divided into multiple independently controllable coil sections (first coil section, second coil section, third coil section) through separate connectors. This segmentation allows selective energization of different coil sections to achieve zonal heating of different portions of the aerosol generating substrate, thereby maintaining heat distribution control precision while using a single integrated coil structure.
2Manufacturing precision
If multiple coil sections are selectively energized to control heat distribution, then the heat distribution control precision is improved, but the device complexity increases
Solution Approach 1:
Multiple coil sections are merged into a single induction coil assembly that is disposed around or adjacent to the heating chamber. This unified structure reduces device complexity compared to using multiple separate coils, while the internal segmentation allows for selective energization of different sections to achieve precise heat distribution control.
3Adaptability or versatility
If selective coil section energization is implemented to enable zonal heating, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The controller is configured to dynamically select and energize different coil sections based on the desired heating mode. This dynamic control capability enables the system to adapt to different heating requirements (different zonal patterns) without requiring physical reconfiguration, thereby improving adaptability while keeping the device structure relatively simple.
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 ensures consistent and controlled heat distribution, providing a more efficient and flexible aerosol generation process, enhancing the user experience by tailoring the heating operation to maintain aerosol quality throughout a usage session.
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
Implementation Method 2
heating an aerosol generating substrate to generate an aerosol for inhalation by a user... heating the aerosol generating substrate to a temperature within this range, without burning or combusting the aerosol generating substrate, generates a vapour which typically cools and condenses to form an aerosol
Data Source
AI summary
An aerosol generating device having a heating chamber for receiving at least part of an aerosol generating substrate and an induction heating arrangement including a single induction coil disposed around or adjacent to the heating chamber for aerosolizing the substrate is provided. The aerosol generating device also includes a controller configured to control the induction heating arrangement to supply an alternating electric current to the single induction coil. The induction heating arrangement has a plurality of connectors associated with the single induction coil which are arranged and configured to permit the supply of the alternating electric current to one or more coil sections to selectively energise the one or more coil sections. The aerosol generating device further includes a plurality of inductively heatable susceptors positioned in the heating chamber adjacent to each coil section to define corresponding heating areas within the heating chamber.