Aerosol Article Extracting Structure for Stable Airflow Paths

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Solution Overview

Problem

Aerosol generating devices face issues with inconsistent airflow paths and residue introduction due to gaps between the extracting portion and the housing, leading to unstable aerosol flavor and potential device damage.

Innovation Solution

The device features an extracting portion that moves in response to the cover portion's movement, ensuring close contact with the housing to maintain a stable airflow path and prevent residue ingress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the extracting portion is fixed relative to the housing, then the structure is simple, but gaps form between the extracting portion and housing causing unstable airflow and residue introduction

Engineering Contradiction:
Improveairflow stabilityVSAvoidextracting portion structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The extracting portion is designed to move dynamically relative to the housing, transitioning between retracted and extended positions. This dynamic configuration allows the extracting portion to maintain close contact with the housing during aerosol generation, eliminating gaps that would cause airflow instability and residue introduction, while remaining simple when not in use.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The extracting portion is separated into a movable component that can be independently controlled. This segmentation allows the extracting portion to be displaced specifically when needed for aerosol generation, while the housing and other components remain stationary, reducing overall structural complexity while improving reliability.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the extracting portion is displaced when cover opens, then gap is prevented and airflow is stable, but the mechanism complexity increases

Engineering Contradiction:
Improveaerosol consistencyVSAvoidmovement mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The movement mechanism of the extracting portion is merged with the cover opening/closing mechanism. When the cover opens, the extracting portion is automatically displaced through this integrated mechanism, ensuring consistent airflow and aerosol generation without requiring a separate, complex control system.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The extracting portion's movement is automatically triggered by the cover opening action itself. The mechanism uses the cover's motion to drive the extracting portion's displacement, eliminating the need for additional actuators or control systems, thereby maintaining simplicity while ensuring reliable aerosol consistency.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If gap exists between extracting portion and housing, then extraction is easy, but residues are introduced and device function decreases

Engineering Contradiction:
Improvearticle extractionVSAvoidresidue introduction
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The extracting portion dynamically adjusts its position based on operational needs. During extraction, it maintains easy access for article insertion, but during aerosol generation, it moves to close the gap with the housing, preventing residue introduction while preserving ease of operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3849351B1Aerosol generating device
Publication Date: 2025.11.19 KT&G CO LTD
  • EP3849351B1 patent drawingFigure 1~2A
  • EP3849351B1 patent drawingFigure 2B~3A
  • EP3849351B1 patent drawingFigure 3B~4A

AI summary

An aerosol generating device includes an accommodating portion accommodating an aerosol generating article through an opening formed in an upper housing, a cover portion configured to open and close the opening, and an extracting portion mounted in the accommodating portion, contacting with the aerosol generating article, and configured to extract the aerosol generating article by moving from a first position to a second position in an longitudinal direction of the accommodating portion when the cover portion opens the opening.