Composite Heat Source for Rapid Aerosol Generation

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Solution Overview

Problem

Traditional aerosol generating articles using combustible heat sources face delays in igniting and delivering heat to the aerosol generating substrate, which affects the efficiency of aerosol generation.

Innovation Solution

The aerosol generating article incorporates a composite heat source comprising a combustible heat source and a combustible wick inserted into it, allowing for efficient heat transfer and aerosol generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a traditional combustible heat source is used, then the structure is simple, but the heat delivery time is delayed

Engineering Contradiction:
Improveheat delivery speedVSAvoidheat source structure
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The heat source is segmented into two functional parts: a combustible heat source (e.g., tobacco rod) and a combustible wick. The wick is inserted into the combustible heat source to create a dual-component system that separates the ignition function from the sustained combustion function, enabling faster heat delivery while maintaining structural simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The combustible wick acts as an intermediary element between the user's ignition action and the combustible heat source. The wick rapidly transmits heat from the ignition point to the combustible heat source, serving as a thermal mediator that accelerates the heat delivery process without requiring direct contact between the ignition source and the combustible material.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If a combustible wick is added to create a composite heat source, then the heat transfer efficiency is improved, but the device complexity increases

Engineering Contradiction:
Improveaerosol generation efficiencyVSAvoidheat source composition
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges two combustible elements (the wick and the combustible heat source) into a single integrated composite heat source assembly. This merging allows both components to work synergistically during combustion, improving aerosol generation efficiency while maintaining a unified structure that does not significantly increase overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The composite heat source structure serves multiple functions: the wick provides rapid ignition and initial heat delivery, while the combustible heat source provides sustained combustion and aerosol generation. This multi-functionality within a single heat source assembly improves productivity without requiring separate ignition and combustion systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 composite heat source enables rapid and efficient heat delivery to the aerosol generating material, enhancing the speed and efficiency of aerosol generation compared to traditional methods.

Implementation Method 1

heat generated by a composite heat source may be efficiently transferred to an aerosol generating substrate

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

the composite heat source includes a combustible heat source and a combustible wick inserted into the combustible heat source

Methodology Applied
Scientific EffectCombustion: Combustion

Data Source

PatentUS12262734B2Aerosol generating article and system comprising composite heat source
Publication Date: 2025.04.01 KT&G CO LTD
  • US12262734B2 patent drawing
  • US12262734B2 patent drawing
  • US12262734B2 patent drawing

AI summary

An aerosol generating article and an aerosol generating system, which include a composite heat source, are provided. An aerosol generating article includes: a first portion including a composite heat source; a second portion adjacent to the first portion and including at least one of an aerosol generating material and a tobacco material; a third portion including a cooling material; and a fourth portion including a filter material, wherein the first portion, the second portion, the third portion, and the fourth portion are sequentially arranged along a longitudinal direction of the aerosol generating article.