Rigid-Sheet Tobacco Article for Wickless Aerosol Generation
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Solution Overview
Problem
Existing aerosol generating devices face issues with wick clogging and condensation in the mouthpiece, requiring cleaning efforts and potential overheating of the housing due to inefficient insulation.
Innovation Solution
A tobacco article design that eliminates the need for a wick by using rigid sheets to retain viscous vaporizable material, allowing direct heating and minimizing condensation, with features like a cylindrical shape and perforated inner sheet to form an airflow path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wick is used to deliver liquid vaporizable material, then the material can be transported to the heating system, but the wick becomes clogged or burned after limited use requiring replacement
Solution Approach 1:
The invention extracts and removes the wick component from the system entirely. Instead of using a wick to deliver liquid vaporizable material to the heating system, the patent employs a capillary wickless design where the liquid material is delivered directly through capillary channels formed in the heating element itself, eliminating the clogging and burning issues associated with traditional wicks
Solution Approach 2:
The invention introduces capillary channels as an intermediary structure between the liquid reservoir and heating element. These channels provide a controlled pathway for liquid delivery without requiring a separate wick component, thus solving the reliability issue while maintaining continuous operation capability
2Productivity
If liquid or viscous material is heated in a metal container, then the material can be vaporized, but significant condensation is formed in the mouthpiece requiring cleaning
Solution Approach 1:
The invention extracts the separate metal container structure and integrates the heating function directly into the cartridge assembly. By forming capillary channels directly in the heating element and eliminating the separate container design, condensation formation in the mouthpiece is significantly reduced, thereby eliminating the need for user cleaning
Solution Approach 2:
The invention changes the thermal parameters of the system by using a ceramic heating element with controlled thermal conductivity instead of a metal container. This parameter change reduces excessive heat transfer to the mouthpiece, minimizing condensation formation and the associated maintenance burden
3Object-affected harmful factors
If high efficiency insulation is used to prevent overheating of the housing, then consumer safety is improved, but device complexity increases
Solution Approach 1:
The invention removes the need for complex high-efficiency insulation structures by fundamentally changing the heating mechanism. The capillary wickless design with direct heating eliminates excessive heat generation and transfer, thereby preventing housing overheating without requiring additional insulation layers or complex thermal management structures
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 solution enhances aerosol generation efficiency, reduces condensation in the mouthpiece, and eliminates the need for cleaning, while maintaining mechanical integrity and compatibility with various aerosol generating devices.
Implementation Method 1
a heating system is formed of one or more electrically activated resistive elements arranged to heat said precursor to generate the aerosol
Implementation Method 2
heating system arranged to heat the vaporizable material to a temperature sufficient to vaporise the vaporizable material and release aerosol into the airflow path
Data Source
AI summary
A tobacco article comprising a viscous vaporizable material and a support. The support may be formed from one or several rigid sheets arranged or bent to retain the viscous vaporizable material and to form an airflow path.