Aerosol Heater Track Alignment for Consistent Vapor Generation

Solution Overview

Problem

Existing aerosol-generating devices face issues with inconsistent vapor generation due to variations in heater design and placement, leading to user discomfort and improper heating of the medium or moisturizer in the stick.

Innovation Solution

The device is designed with an electrically conductive track aligned with the downstream end of the medium portion of the stick, surrounded by a susceptor, ensuring uniform heating and consistent vapor production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the heater is not designed or placed suitably for the structure of the stick, then the device complexity is reduced, but the medium or moisturizer in the stick will not be properly heated

Engineering Contradiction:

Improveheating performanceVSAvoidheater design and placement

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by positioning the heater specifically at the downstream end of the insertion space, aligning with the downstream end of the medium portion. This localized heating approach ensures that the medium or moisturizer is properly heated at the critical location where vapor generation occurs, rather than requiring complex heating designs throughout the entire stick structure.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent ensures equipotentiality by aligning the downstream end of the electrically conductive track with the downstream end of the medium portion, creating a uniform heating zone. This alignment ensures consistent heat distribution and vapor generation throughout the heating area, preventing uneven heating and ensuring reliable performance.

Inventive Principle:

Principle #12Equipotentiality

2Productivity

If the heater structure is simplified, then the device complexity is reduced, but large deviation in the amount of vapor generated according to the number of user puffs occurs

Engineering Contradiction:

Improvevapor generation consistencyVSAvoidheater structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent ensures equipotentiality by aligning the downstream end of the electrically conductive track with the downstream end of the medium portion, creating a uniform heating zone. This alignment ensures consistent heat distribution and vapor generation throughout the heating area, preventing uneven heating and ensuring reliable performance.

Inventive Principle:

Principle #12Equipotentiality

Solution Approach 2:

The patent applies continuity of useful action by designing the heater to continuously heat the medium or moisturizer throughout the stick's usage period. The aligned structure ensures that heat is consistently applied to the appropriate location for the entire duration of the stick's operation, maintaining stable vapor generation without interruption or deviation.

Inventive Principle:

Principle #20Continuity of useful action

3Reliability

If the electrically conductive track is aligned with the downstream end of the medium portion, then vapor generation consistency is improved, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvevapor generation consistencyVSAvoidalignment precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent ensures equipotentiality by aligning the downstream end of the electrically conductive track with the downstream end of the medium portion, creating a uniform heating zone. This alignment ensures consistent heat distribution and vapor generation throughout the heating area, preventing uneven heating and ensuring reliable performance.

Inventive Principle:

Principle #12Equipotentiality

Solution Approach 2:

The patent applies local quality by positioning the heater specifically at the downstream end of the insertion space, aligning with the downstream end of the medium portion. This localized heating approach ensures that the medium or moisturizer is properly heated at the critical location where vapor generation occurs, rather than requiring complex heating designs throughout the entire stick structure.

Inventive Principle:

Principle #3Local quality

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 alignment ensures consistent nicotine and moisturizer vapor generation, enhancing user experience by minimizing foreign sensations and improving heating efficiency.

Implementation Method 1

an electrically conductive track surrounding the susceptor and configured to heat the susceptor and the insertion space

Methodology Applied

Scientific EffectResistive heating: Joule Heating

Implementation Method 2

a susceptor surrounding the insertion space and extending in the longitudinal direction of the insertion space

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS20250386867A1Aerosol-generating device

Publication Date: 2025.12.25 KT&G CO LTD

AI summary

An aerosol-generating device is disclosed. The aerosol-generating device includes a body providing an elongated insertion space, a stick provided therein with a medium portion and being inserted into the insertion space, a susceptor surrounding the insertion space and extending in the longitudinal direction of the insertion space, and an electrically conductive track surrounding the susceptor and configured to heat the susceptor and the insertion space. The electrically conductive track has a downstream end aligned, in the radial direction of the insertion space, with the downstream end of the medium portion of the stick inserted into the insertion space.