Aerosol Device Article Identification via Inductive Heating

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Solution Overview

Problem

Aerosol-generating devices face challenges in identifying the type of aerosol-generating article used, as existing methods require separate sensors and markers, increasing technical effort and production costs.

Innovation Solution

An aerosol-generating device that uses a controller and inductive heating arrangement to determine the difference in electrical properties of the susceptor arrangement during heating, allowing for identification of the article type without separate sensors or markers, by leveraging existing components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate sensor means and specific markers are used to identify article type, then identification accuracy is improved, but device complexity and production costs increase

Engineering Contradiction:

Improvearticle type identification accuracyVSAvoiddevice structure complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges the identification function with the existing inductive heating arrangement by measuring electrical properties (impedance, resistance, inductance) of the susceptor arrangement during normal heating operation. This eliminates the need for separate sensor means and markers, as the same electromagnetic field used for heating also serves as the detection mechanism, thereby reducing device complexity while maintaining identification capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The inductive heating arrangement is given a dual function: it both heats the susceptor arrangement and identifies the article type through electrical property measurements. By making the heating system multi-functional, the patent avoids adding dedicated identification components, thus reducing overall device complexity while achieving accurate article type recognition

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate sensor means and markers are implemented, then article type detection capability is improved, but production costs for device and article increase

Engineering Contradiction:

Improvearticle type detection capabilityVSAvoidproduction cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The susceptor arrangement serves itself for identification purposes by exhibiting characteristic electrical properties that are inherently tied to its material composition and geometry. The system uses these self-exhibited properties during normal operation to identify the article type, eliminating the need for separate markers on the article and additional sensors on the device, thereby reducing production costs for both components

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent utilizes changes in electrical parameters (impedance, resistance, inductance) of the susceptor arrangement that occur during heating as the basis for identification. By monitoring these parameter changes that naturally occur during operation, the system achieves article type detection without requiring additional identification components, thus lowering manufacturing costs

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

Enables simple and cost-effective identification of aerosol-generating article types by utilizing existing components, reducing production costs and technical complexity while maintaining accurate article type recognition.

Implementation Method 1

an inductive heating arrangement configured to generate an alternating magnetic field for inductively heating the susceptor arrangement of the aerosol-generating article

Methodology Applied

Scientific EffectInductive heating: Induction Heating

Implementation Method 2

generate an alternating magnetic field for inductively heating the susceptor arrangement

Methodology Applied

Scientific EffectAlternating magnetic field: Alternating Magnetic Field

Data Source

PatentUS20240008551A1Aerosol-generating device with means for identifying a type of an aerosol-generating article being used with the device

Publication Date: 2024.01.11 PHILIP MORRIS PRODUCTS SA

AI summary

An aerosol-generating device is provided for alternative use with at least a first type and a second type of inductively heatable aerosol-generating articles including a susceptor arrangement, the device including: a receptacle to removably receive at least a portion of the first or the second type of article; an inductive heating arrangement to generate an alternating magnetic field for inductively heating the susceptor arrangement when the article is received by the receptacle; and a controller operatively connected to the heating arrangement and being configured to: determine a first value and a second value of an electrical property of the susceptor arrangement being reached during heating of the susceptor arrangement in use of the device when the article is received by the receptacle, determine the difference between the first and the second values, and identify an article type of the article received by the receptacle based on the determined difference.