Hollow Aerosol Medium Segment for Faster Preheating

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Solution Overview

Problem

Existing aerosol generating articles face challenges in shortening preheating time and preventing a decrease in atomization efficiency due to inadequate heat transfer and medium composition.

Innovation Solution

The aerosol generating article includes a medium segment with a longitudinal hollow, molded into a tube shape with a moisture content between 30% and 60%, and is configured with a first and second filter segment, along with a cooling segment, to enhance heat transfer efficiency and maintain atomization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the medium is molded into a solid structure, then the manufacturing process is simple, but the heat transfer efficiency is insufficient and preheating time is extended

Engineering Contradiction:

Improvemolding process simplicityVSAvoidpreheating time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The medium segment is designed with a longitudinal hollow structure, creating a porous-like configuration that significantly increases the surface area for heat transfer. This hollow cylindrical structure allows heat to penetrate through the medium more efficiently, reducing preheating time while maintaining manufacturing simplicity through extrusion processes.

Inventive Principle:

Principle #31Porous materials

2Loss of time

If the medium segment has a longitudinal hollow, then the heat transfer efficiency is improved, but the manufacturing process becomes more complex

Engineering Contradiction:

Improvepreheating timeVSAvoidmolding process complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The hollow structure is formed during the extrusion process itself, where the medium slurry is forced through a die with a hollow cylindrical shape. This preliminary action of forming the hollow structure during manufacturing eliminates the need for subsequent complex processing steps to create the heat transfer channels, thus reducing overall manufacturing complexity despite the sophisticated geometry.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The complex hollow structure is created using extrusion technology, which replaces traditional mechanical forming methods. The extrusion process uses controlled material flow and pressure to directly form the hollow cylindrical shape, simplifying the manufacturing process compared to traditional machining or assembly methods that would be required to create such a structure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If the medium slurry has high moisture content, then the atomization performance is improved, but the structural integrity during molding is reduced

Engineering Contradiction:

Improveatomization performanceVSAvoidstructural integrity

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The moisture content of the medium slurry is precisely controlled within the range of 30-60% to optimize both atomization performance and structural integrity. This parameter optimization allows the medium to maintain sufficient moisture for good atomization while having enough solid content to hold its shape during the extrusion and drying processes. The longitudinal hollow structure further enhances this balance by providing thermal pathways that promote controlled moisture distribution.

Inventive Principle:

Principle #35Parameter changes

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 significantly shortens preheating time and prevents a decrease in atomization, ensuring efficient heat transfer and sufficient nicotine release, even at lower temperatures.

Implementation Method 1

the medium segment has a longitudinal hollow and the medium segment is configured by being solidified after medium slurry including a medium is molded into a tube shape... significantly shortens preheating time and prevents a decrease in atomization, ensuring efficient heat transfer

Methodology Applied

Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 2

A cooling segment between the medium segment and the second filter segment is further included

Methodology Applied

Scientific EffectCooling: Cooling

Data Source

PatentUS20250089754A1Aerosol generating article and method of manufacturing the same

Publication Date: 2025.03.20 KT&G CO LTD

AI summary

A non-combustion-type aerosol generating article according to an embodiment includes a first filter segment, a medium segment disposed downstream of the first filter segment, and a second filter segment disposed downstream of the medium segment, in which the medium segment has a longitudinal hollow and is manufactured by being solidified after medium slurry is molded into a cylindrical shape.