Cartridge Coupling Airflow Path for Low-Resistance Aerosol Draw

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Solution Overview

Problem

There is a need for an aerosol generating device that forms an appropriate airflow path when a cartridge is detachably combined with a main body, ensuring smooth air circulation and minimizing draw resistance.

Innovation Solution

The device includes a cartridge with a storage for aerosol material and a first airflow passage, and a main body with a coupling portion that allows external air to flow through a fine gap formed by the coupling, eliminating the need for a separate air inlet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a cartridge is detachably coupled to a main body, then the device structure becomes more flexible and maintainable, but the airflow path design becomes more complex and draw resistance increases

Engineering Contradiction:

Improvedetachable couplingVSAvoidairflow path design

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The aerosol generating device is divided into two detachable parts: a main body and a cartridge. The cartridge can be removed and replaced independently, allowing for easy maintenance and refilling without disassembling the entire device. This segmentation resolves the contradiction by providing adaptability while managing complexity through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coupling portion between the main body and cartridge is designed to serve multiple functions: mechanical connection, sealing, and airflow path formation. By integrating these functions into a single coupling mechanism, the design reduces overall complexity while maintaining detachability and proper airflow characteristics.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If a separate air inlet is added to ensure smooth airflow, then air circulation improves, but the device structure becomes more complex

Engineering Contradiction:

Improveair circulationVSAvoiddevice structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The coupling portion between the main body and cartridge is designed to simultaneously serve as both the mechanical connection interface and the air inlet. External air flows into the device through the gap formed by the coupling of the cartridge and main body, eliminating the need for a separate air inlet structure. This merging of functions improves air circulation while maintaining simple device structure.

Inventive Principle:

Principle #5Merging (Combining)

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 design ensures smooth airflow circulation and reduces the need for a separate air inlet, enhancing the user experience by maintaining consistent airflow and reducing resistance.

Implementation Method 1

external air flows into the aerosol generating device through a fine gap formed by coupling of the main body and the cartridge

Methodology Applied

Scientific EffectPressure differential: Pressure Gradient

Data Source

PatentUS12575606B2Aerosol generating device comprising a cartridge

Publication Date: 2026.03.17 KT&G CO LTD

AI summary

An aerosol generating device includes: a cartridge including a storage for storing the aerosol generating material and a first airflow passage through which airflow moves along a path surrounding the storage; and a main body including a coupling portion to which the cartridge is detachably coupled, wherein a gap is formed between the main body and the cartridge such that external air flows into the aerosol generating device through the gap.