Aerosol Consumable Heat-Source Layout for Even Heating and Gas Isolation
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Solution Overview
Problem
Existing aerosol generating devices with combustible heat sources face challenges in evenly distributing heat to the aerosol substrate, leading to potential combustion of the substrate and inhalation of combustion gases by the user, while also requiring complex and costly heaters.
Innovation Solution
An aerosol generating consumable design with a combustible heat source that overlaps with the aerosol substrate portion and extends beyond its inlet end, combined with a metal or paper wrapping layer to evenly distribute heat and prevent inhalation of combustion gases, using filters and a chamber design to isolate combustion gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a combustible heat source is used to heat the aerosol substrate, then heating function is achieved, but combustion gases are generated that may be inhaled by the user
Solution Approach 1:
The aerosol substrate portion is divided into two functional zones: a first portion that overlaps with the combustible heat source for heating, and a second portion that extends beyond the heat source where aerosol exits. This segmentation separates the heating function from the aerosol delivery function, preventing combustion gases from reaching the user while maintaining effective heating.
2Stability of the object's composition
If the combustible heat source entirely surrounds the aerosol substrate material, then heat distribution is improved, but the aerosol substrate material may combust
Solution Approach 1:
The combustible heat source is configured to overlap with only part of the aerosol substrate portion in the longitudinal direction, creating different functional zones. The first portion receives heat for aerosol generation, while the second portion extends beyond the heat source to serve as an exit pathway. This local differentiation prevents combustion of the entire substrate while maintaining adequate heat distribution in the heating zone.
3Speed
If e-cigarettes are used for fast volatilisation, then volatilisation speed is improved, but leakage vulnerability increases
Solution Approach 1:
The invention uses a disposable aerosol substrate consumable with a combustible heat source, eliminating the need for reusable e-cigarette tanks and heating elements that are prone to leakage. The consumable is designed for single use, sacrificing long-term reliability of reusable components for the advantage of eliminating leakage issues entirely through disposable design.
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 design ensures even heat distribution to the aerosol substrate, reduces the risk of substrate combustion and inhalation of combustion gases, and simplifies device construction by eliminating the need for a heater.
Implementation Method 1
a combustible heat source configured to be ignited to heat the aerosol substrate portion
Implementation Method 2
heat can be more evenly applied to the aerosol substrate portion during an inhalation session
Implementation Method 3
due to diffusion and convection while inhaling
Implementation Method 4
due to diffusion and convection while inhaling
Data Source
AI summary
An aerosol generating consumable includes: an aerosol substrate portion including an inlet end for air to be drawn into the aerosol substrate portion and an outlet end for aerosol to exit the aerosol substrate portion, wherein the aerosol substrate portion extends in a longitudinal direction from the outlet end to the inlet end; and a combustible heat source configured to be ignited to heat the aerosol substrate portion, wherein the combustible heat source is arranged to overlap with part of the aerosol substrate portion in the longitudinal direction, wherein the inlet end of the aerosol substrate portion is configured to extend beyond a distal end of the combustible heat source in the longitudinal direction.