Cooling Rod Airflow Regulator for Adjustable Aerosol Cooling

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Solution Overview

Problem

Existing aerosol-generating articles lack a mechanism to regulate the amount of air passing through perforations, making it difficult for users to control the cooling effect and inhalation experience.

Innovation Solution

An aerosol-generating article with a cooling assembly and air volume regulator that includes a cooling rod, perforations, and an air volume regulator with a covering member and through holes, allowing users to adjust the amount of air passing through by moving the regulator along the cooling rod.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If air passes through perforations to cool the aerosol-generating article, then cooling effect is improved, but user control over cooling amount is lost

Engineering Contradiction:
Improvecooling effectVSAvoiduser control
Core Design Contradiction:
TemperatureVSEase of operation

Solution Approach 1:

The air volume regulator is designed as a movable component that can be positioned at different locations along the aerosol-generating article. By moving the regulator to different positions, users dynamically adjust the effective opening area of the perforations, thereby controlling the amount of air passing through and achieving desired cooling effects.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter of air flow area by moving the air volume regulator to different positions. This adjusts the effective opening area of the perforations, allowing continuous variation of the cooling parameter to match user preferences and environmental conditions.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If fixed perforations are used for air passage, then structure is simple, but cooling amount cannot be adjusted

Engineering Contradiction:
ImprovestructureVSAvoidcooling adjustment
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The aerosol-generating article is segmented into functional zones: a cooling assembly with perforations and an air volume regulator. This segmentation allows the cooling function to be separated from the main body, enabling independent adjustment of air flow without complicating the overall structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The air volume regulator acts as an intermediary component between the user and the cooling system. It mediates the air flow through the perforations by providing a movable blocking element, allowing users to adjust cooling without directly modifying the perforation structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

Enables users to easily control the cooling amount and inhalation experience by regulating air flow, improving the ease of adjusting cooling and inhalation preferences.

Implementation Method 1

a cooling rod for cooling an aerosol generated by the aerosol-generating article

Methodology Applied
Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 2

An aerosol-generating article includes perforations for passage of outside air. The perforations serve to cool the aerosol-generating article as the outside air passes through.

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP3970518B1Aerosol generating article, cooling assembly for aerosol generating article, and air amount adjustment device
Publication Date: 2026.02.11 KT&G CO LTD
  • EP3970518B1 patent drawingFigure 1
  • EP3970518B1 patent drawingFigure 2
  • EP3970518B1 patent drawingFigure 3

AI summary

A cooling assembly for the aerosol-generating article according to an embodiment may include a cooling rod for cooling an aerosol generated by the aerosol-generating article; a perforation formed in the cooling rod and through which air passes; and an air volume regulator disposed on the outside of the cooling rod to cover the perforation, and regulating an amount of air passing through the perforation as the air volume regulator moves from one position to another.