Heater Assembly Sealed Fluid Path Aerosol Generation
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Solution Overview
Problem
Existing smoking alternatives that heat tobacco or other aerosol generating materials without burning them often face challenges in efficiently and safely converting these materials into inhalable aerosols, with issues related to heat distribution and containment within the device.
Innovation Solution
An aerosol provision device featuring a heater assembly with a susceptor heated by an inductor coil, where a sealed fluid path is created between the heating chamber and a passage with a smaller cross-sectional area, allowing for efficient heat transfer and aerosol generation without direct heating of external components, thus maintaining a safe temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a heating chamber with large cross-sectional area is used to efficiently heat aerosol generating material, then heating efficiency is improved, but heat containment becomes difficult and external components may overheat
Solution Approach 1:
The heating chamber is divided into two distinct portions: a first portion with a larger internal cross-sectional area for efficient heating of aerosol generating material, and a second portion with a smaller internal cross-sectional area that acts as a thermal barrier. This segmentation allows the system to maintain high heating efficiency while preventing heat from reaching external components.
Solution Approach 2:
The second portion of the heating chamber serves as an intermediary thermal barrier between the high-temperature heating zone and external components. By positioning this smaller cross-section portion between the heat source and external environment, it mediates heat transfer and protects external components from overheating.
2Productivity
If a sealed fluid path is implemented to contain aerosol flow, then aerosol generation efficiency is improved, but device complexity increases
Solution Approach 1:
The heating chamber portions are merged into a single integrated structure with a sealed fluid path defined between them. This merging approach creates an effective sealed environment for aerosol generation without requiring additional separate containment components, thus improving aerosol generation efficiency while minimizing the increase in device complexity.
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 device effectively heats aerosol generating materials to produce an inhalable aerosol while keeping external components at a safe temperature, enhancing the safety and efficiency of the aerosol generation process.
Implementation Method 1
the first portion being heatable by the inductor coil
Implementation Method 2
a susceptor which is heatable by penetration with a varying magnetic field; an inductor coil extending around the susceptor, wherein the inductor coil is configured to generate the varying magnetic field
Data Source
AI summary
An aerosol provision device is described. One such device includes at least one inductor coil and a heater assembly arranged to receive aerosol generating material. The heater assembly has a first portion defining a heating chamber for receiving aerosol generating material and having a first internal cross section. The first portion is heatable by the at least one inductor coil. The heater assembly also has a second portion adjacent the first portion forming a passage having a second internal cross-section. The second internal cross-section is less than the first internal cross-section. A sealed fluid path is formed between the first and second portions.