Aerosol Device Detecting Wrapper Discoloration to Prevent Reuse

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Solution Overview

Problem

Users of aerosol generating devices may reuse aerosol generating articles, leading to a change in the flavor of the aerosol, which affects user satisfaction, and there is a need to prevent this reuse.

Innovation Solution

An aerosol generating system that includes an aerosol generating article with a wrapper that is heated and discolored, and an aerosol generating device equipped with a sensor to detect the discoloration of the wrapper, which blocks the device's operation or alerts the user when the article is reused.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If users reuse aerosol generating articles, then the device can be used multiple times, but the flavor of the aerosol changes and user satisfaction decreases

Engineering Contradiction:

Improveusage durationVSAvoidflavor consistency

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The wrapper is designed to undergo color change when exposed to heat, serving as a visual indicator of heating history. This thermochromic or heat-sensitive color change mechanism allows the system to detect whether the aerosol generating article has been previously heated, thereby preventing reuse that would compromise flavor consistency.

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

A sensor acts as an intermediary between the wrapper and the control system. The sensor detects the color change of the wrapper and transmits this information to the controller, which then prevents further operation. This intermediary mechanism enables the system to respond to physical changes in the wrapper without direct contact or complex analysis.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a sensor is added to detect wrapper discoloration, then reuse can be prevented, but device complexity increases

Engineering Contradiction:

Improvereuse preventionVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The invention replaces complex mechanical or electronic tracking systems with a simple optical detection system. Instead of using RFID tags, barcodes, or complex user input mechanisms, the system uses a sensor to detect the inherent color change of the wrapper material itself, significantly reducing system complexity while maintaining reliable reuse prevention.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The wrapper itself serves as the information carrier by changing color to indicate its heating history. The wrapper's material properties are utilized to provide the detection signal, eliminating the need for separate identification components or systems. This self-service approach reduces overall system complexity while ensuring reliable detection of reuse conditions.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12022880B2Aerosol generating device preventing reuse of an aerosol generating article by detecting discoloration of a wrapper of the aerosol generating article

Publication Date: 2024.07.02 KT&G CO LTD

AI summary

Provided is an aerosol generating system including an aerosol generating article and an aerosol generating device configured to receive and heat the aerosol generating article. The aerosol generating article includes a wrapper that is heated to be discolored, and the aerosol generating device includes a sensor that is configured to detect a discoloration of the wrapper.