Separable Heat-Source Aerosol Holder for Low-Scorch Vaporization

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Solution Overview

Problem

Traditional smoking articles suffer from issues such as scorching of wrapping material, production of undesirable gases like carbon monoxide and carbon dioxide, and poor aerosolization of aerosol-forming components, while also being prone to incomplete combustion and pyrolysis products.

Innovation Solution

The design of aerosol delivery devices with separable heat and substrate portions that can be independently removable and replaceable, allowing for easy use and reuse of components, with a heat transfer component between them to facilitate efficient aerosol generation without significant combustion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a combustible heat source is used to generate heat for aerosol production, then heat generation is effective, but undesirable gases like carbon monoxide and carbon dioxide are produced

Engineering Contradiction:

Improveheat generationVSAvoidundesirable gases

Core Design Contradiction:

PowerVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the combustion process from the aerosol generation system by using a pre-heated metal surface (heat transfer component) to transfer heat to the aerosol-forming composition, rather than combusting the composition itself. This separates the heat source from the material being processed, eliminating harmful combustion byproducts while maintaining effective heat generation.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a heat transfer component (metal surface) as an intermediary between the heat source and the aerosol-forming composition. This intermediary transfers thermal energy without direct combustion of the composition, preventing the formation of harmful gases while maintaining the necessary temperature for aerosol generation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If high temperature is used to vaporize aerosol-forming components, then aerosolization efficiency is improved, but scorching of wrapping material occurs

Engineering Contradiction:

Improveaerosolization efficiencyVSAvoidscorching

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the heating function from the aerosol-forming composition by using a separate heat transfer component. This allows precise control of the heating surface temperature to achieve efficient vaporization without overheating the wrapping material, as the heat is applied locally at the metal surface rather than throughout the entire structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies heat locally at the heat transfer component surface where the aerosol-forming composition contacts the metal, rather than heating the entire device uniformly. This localized heating achieves high aerosolization efficiency at the contact point while preventing scorching of the wrapping material in other areas.

Inventive Principle:

Principle #3Local quality

3Device complexity

If traditional combustion method is used, then heat source is simple, but incomplete combustion and pyrolysis products are generated

Engineering Contradiction:

Improveheat source simplicityVSAvoidincomplete combustion products

Core Design Contradiction:

Device complexityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the chemical combustion process with a thermal conduction process. Instead of burning fuel to generate heat, a pre-heated metal surface transfers thermal energy directly to the aerosol-forming composition. This substitution eliminates incomplete combustion and pyrolysis products while maintaining a relatively simple device structure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 provides a smoking experience similar to traditional smoking articles without significant combustion, reducing scorching and undesirable gas production, and improving aerosolization efficiency.

Implementation Method 1

a heat source configured to generate heat upon ignition of a carbon-based fuel element

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 2

a heat transfer component disposed between the heat source and the aerosol-forming composition

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 3

heat a volatile material... capable of vaporizing components of tobacco and/or other tobacco related materials to form an inhalable aerosol

Methodology Applied

Scientific EffectVaporization: Evaporation

Data Source

PatentUS12569004B2Aerosol delivery device with separable heat source and substrate

Publication Date: 2026.03.10 R J REYNOLDS TOBACCO COMPANY

AI summary

The present disclosure is directed to an aerosol delivery device. In some implementations, the aerosol delivery device may comprise a holder, a heat portion including a heat source configured to generate heat, and a substrate portion comprising a substrate material including an aerosol precursor composition. The holder may be configured to receive the heat portion and the substrate portion, the heat portion and the substrate portion may be disposed proximate each other, and the heat portion and the substrate portion may be separate components and may be configured to be independently removable and replaceable within the holder.