Internal Heating Element Aerosol Article for Consistent Heating
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Solution Overview
Problem
Existing aerosol-generating articles and systems with internal heating elements face inefficiencies in heating aerosol-generating substrates due to reduced direct contact and increased thermal resistance, leading to inconsistent heating and unacceptable resistance to draw.
Innovation Solution
The use of an aerosol-generating substrate with a density of 100 to 700 mg/cm³ and a ratio of strand width to internal heating element width of 0.05 to 4, ensuring direct contact and efficient heating without significantly increasing resistance to draw.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an internal heating element is used to heat the aerosol-generating substrate, then heating efficiency is improved, but direct contact between the heating element and substrate is reduced leading to inconsistent heating
Solution Approach 1:
The aerosol-generating substrate is divided into multiple strands arranged in a bundled configuration. This segmentation increases the total surface area contact points between the internal heating element and the substrate, ensuring more consistent heat distribution across the entire substrate while maintaining high heating efficiency.
2Use of energy by moving object
If the density of the aerosol-generating substrate is increased to improve heating efficiency, then direct contact with the heating element is improved, but resistance to draw increases
Solution Approach 1:
The substrate density is optimized to a specific range (100-700 mg/cm³) that balances two competing requirements: high enough density to ensure adequate direct contact with the heating element for efficient heating, but not so high as to create excessive resistance to draw. This parameter optimization resolves the contradiction by finding the optimal middle ground.
3Reliability
If the width of the internal heating element is increased to improve contact with the substrate, then heating consistency is improved, but the ratio of strand width to heating element width changes affecting performance
Solution Approach 1:
The width of the internal heating element is optimized relative to the strand width to maintain the ratio within the range of 0.05 to 4. This parameter optimization ensures sufficient contact area for consistent heating while preserving adequate airflow channels for efficient aerosol generation, thus resolving the contradiction between heating consistency and productivity.
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 configuration allows for more efficient and consistent heating of the aerosol-generating substrate while maintaining an acceptable resistance to draw, enhancing the overall performance of the aerosol-generating article and system.
Implementation Method 1
an internal heating element that is configured to be inserted into the aerosol-generating substrate of a heated aerosol-generating article
Implementation Method 2
an inductor configured to inductively heat aerosol-generating substrates of heated aerosol-generating articles
Implementation Method 3
the alternating electromagnetic field produced by the inductor induces a current in the susceptor, causing the susceptor to heat up
Implementation Method 4
volatile compounds are released from the aerosol-generating substrate by heat transfer from the heat source to the aerosol-generating substrate
Implementation Method 5
As the released compounds cool, they condense to form an aerosol that is inhaled by the user
Data Source
AI summary
An aerosol-generating system is provided, including: an aerosol-generating article including: an aerosol-generating section including an aerosol-generating substrate including a plurality of strands of aerosol-generating material, the aerosol-generating substrate having a density of between 100 milligrams per cubic centimetre and 700 milligrams per cubic centimetre; and an aerosol-generating device including an elongate internal heating element configured to be inserted into the aerosol-generating substrate of the aerosol-generating section of the aerosol-generating article, the aerosol-generating substrate being a star anise material, and a ratio of an average width of the plurality of strands of aerosol-generating material to a width of the elongate internal heating element being between 0.05 and 4.