Flavor Stick Ventilation Structure for Ignition-Safe Aerosol Inhalation
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Solution Overview
Problem
Heat-not-burn inhalation systems face challenges in preventing accidental ignition when users attempt to light the flavor sticks like conventional cigarettes, and existing configurations limit air cooling, making proper smoking difficult.
Innovation Solution
A flavor stick design with restricted and unrestricted ventilation portions, integrated into a heat-not-burn inhalation device, allows controlled airflow and prevents ignition while ensuring proper smoking when used correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ventilation portions are provided in the cylindrical member to allow air cooling, then proper smoking is enabled, but accidental ignition becomes more likely when the flavor stick is not engaged with the device
Solution Approach 1:
The patent applies local quality by creating different ventilation characteristics at different locations along the cylindrical member. The first ventilation portions are positioned to be restricted when engaged with the device, while the second ventilation portions remain unrestricted, creating localized airflow control that enables proper smoking without facilitating accidental ignition.
Solution Approach 2:
The patent implements dynamics by making the ventilation characteristics changeable based on the engagement state. When the flavor stick is engaged with the heating device, the first ventilation portions are restricted by the device structure, but when disengaged, both first and second ventilation portions allow airflow. This dynamic behavior enables proper smoking during engagement while preventing accidental ignition when disengaged.
2Reliability
If air flow path is limited to prevent ignition, then safety is improved, but aerosol generation and flavor inhalation become difficult
Solution Approach 1:
The patent applies local quality by creating different ventilation characteristics at different locations along the cylindrical member. The first ventilation portions are positioned to be restricted when engaged with the device, while the second ventilation portions remain unrestricted, creating localized airflow control that enables proper smoking without facilitating accidental ignition.
Solution Approach 2:
The patent implements dynamics by making the ventilation characteristics changeable based on the engagement state. When the flavor stick is engaged with the heating device, the first ventilation portions are restricted by the device structure, but when disengaged, both first and second ventilation portions allow airflow. This dynamic behavior enables proper smoking during engagement while preventing accidental ignition when disengaged.
3Object-generated harmful factors
If unrestricted ventilation is provided for proper smoking, then aerosol generation is improved, but the risk of ignition increases when attempted to be lit like conventional cigarettes
Solution Approach 1:
The patent applies local quality by creating different ventilation characteristics at different locations along the cylindrical member. The first ventilation portions are positioned to be restricted when engaged with the device, while the second ventilation portions remain unrestricted, creating localized airflow control that enables proper smoking without facilitating accidental ignition.
Solution Approach 2:
The patent implements dynamics by making the ventilation characteristics changeable based on the engagement state. When the flavor stick is engaged with the heating device, the first ventilation portions are restricted by the device structure, but when disengaged, both first and second ventilation portions allow airflow. This dynamic behavior enables proper smoking during engagement while preventing accidental ignition when disengaged.
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 enables safe smoking by preventing accidental ignition and ensuring balanced airflow, allowing for effective aerosol generation and flavor inhalation.
Implementation Method 1
an electrically heated device that has: a heater assembly
Implementation Method 2
inhalation of aroma or an aerosol that is generated when heated by a heater
Implementation Method 3
air flowing in from the tip and the ventilation portions is drawn out through the drawing end
Data Source
Figure 1A~1B
Figure 2~3
Figure 4~5
AI summary
This flavor stick is accommodated, such that insertion and removal is possible, in an accommodation portion of a non-combustion type flavor inhalation device and is heated in the state of being accomodated in the accomodation portion. The flavor stick inlcudes a flavor filling containing a flavor source and an aerosol-generating substrate, and a cylindrical member to be at least partially filled with the flavor filling. One end of the cylindrical member is the distal end and the other end thereof is an inhalation port end, and the cylindrical member is provided, on the peripheral wall faming the cylindrical member, with a ventilation portion that allows air to flow from the outside into an internal space thereof. The distal end, the ventilation portion, and the inhalation portend are communicated with each other such that when inhalation is performed from the inhalation port end side, air flowing in from the distal end and the ventilation portion is sucked out from the inhalation port end. The ventilation portion includes a first ventilation portion in which inflow of air is restricted by an inner wall of the accommodation portion when the distal end side of the flavor stick is accommodated in a prescribed state in the accommodation portion, and a second ventilation portion located closer to the inhalation port end side than the first ventilation portion, and through which inflow of air is not restricted by the inner wall of the accommodation portion when the distal end side of the flavor stick is accommodated in the prescribed state in the accommodation portion.