Thermally Conductive Wrapper for Single-Heater Aerosol Temperature Control
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Solution Overview
Problem
Existing aerosol generating devices face challenges in heating aerosol substrate sections and nicotine-containing media to different temperatures using a single heater, leading to unsatisfactory taste and aerosol production.
Innovation Solution
An aerosol generating article with a thermally conductive wrapper that spatially separates and heats aerosol substrate sections and nicotine media to different temperatures using a single heater, employing a thermally conductive wrapper with varying thermal conductivities and configurations to manage heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single heater is used to heat both aerosol substrate section and nicotine-containing medium, then device complexity is reduced, but temperature control precision deteriorates leading to unsatisfactory taste and aerosol production
Solution Approach 1:
The wrapper is divided into multiple sections with different thermal conductivity characteristics. The first wrapper portion has different thermal conductivity than the second wrapper portion, allowing differential heat transfer to the aerosol substrate section and nicotine-containing medium respectively. This segmentation enables precise temperature control for each component while using a single heater.
Solution Approach 2:
Different portions of the wrapper are assigned different thermal conductivity properties to achieve local temperature optimization. The first wrapper portion surrounding the aerosol substrate section has tailored thermal conductivity different from the second wrapper portion surrounding the nicotine-containing medium, ensuring each region receives appropriate heat transfer characteristics for its specific function.
2Ease of operation
If aerosol substrate section and nicotine medium are heated to the same temperature, then heating process is simplified, but aerosol generation quality and taste deteriorate
Solution Approach 1:
The wrapper acts as an intermediary thermal management component between the single heater and the two different materials (aerosol substrate and nicotine medium). By incorporating portions with different thermal conductivities, the wrapper mediates heat transfer to achieve different temperatures for each material, ensuring optimal aerosol generation quality and taste while maintaining single-heater simplicity.
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
Achieves optimal temperature differentiation for aerosol substrate sections and nicotine media, ensuring satisfactory taste and sufficient aerosol generation without multiple heaters.
Implementation Method 1
a thermally conductive wrapper surrounding at least part of the aerosol substrate section and the medium
Data Source
AI summary
The present disclosure relates to an aerosol generating article for use with an aerosol generating device, and to an aerosol generating article including a thermally conductive wrapper. An aerosol generating article according to one aspect includes an aerosol substrate section containing an aerosol generating material without nicotine, a medium disposed toward a downstream end of the aerosol substrate section and containing nicotine, a cooler disposed toward a downstream end of the medium, a filter disposed toward a downstream end of the cooler, and a wrapper surrounding at least part of the aerosol generating article, wherein the wrapper includes a thermally conductive wrapper surrounding at least part of the aerosol substrate section and the medium.