Extractor-Mounted Induction Coil for Concentrated Aerosol Heating

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Solution Overview

Problem

Existing heating devices for tobacco or non-tobacco products do not efficiently generate aerosols for inhalation and lack efficient mechanisms for article extraction and power supply to induction coils.

Innovation Solution

A vapor generation device with a susceptor heated by a changing magnetic field, an extractor for article removal, and a coil power supply system, including a conductive element and electrical contacts, to concentrate magnetic fields and facilitate aerosol generation and extraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the induction coil is wound on an outer wall forming a cavity component, then the coil has a larger spiral inner diameter, but the generated magnetic field is less concentrated

Engineering Contradiction:
Improvemagnetic field concentrationVSAvoidcoil inner diameter
Core Design Contradiction:
Volume of moving objectVSLength of moving object

Solution Approach 1:

The induction coil is extracted from the cavity component and mounted on the extractor instead, allowing the coil to have a smaller inner diameter and generate more concentrated magnetic fields while maintaining functional separation between heating and structural components

Inventive Principle:
Principle #2Taking out (Extraction)

2Volume of moving object

If the induction coil is mounted on the extractor, then the magnetic field is more concentrated, but the power supply connection becomes more complex

Engineering Contradiction:
Improvemagnetic field concentrationVSAvoidpower supply connection
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The conductive element is nested within the extractor structure, with the induction coil wound around the extractor and the conductive element positioned to electrically connect the coil to the power supply through the extractor walls, integrating multiple functions into a compact nested arrangement

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The conductive element acts as an intermediary between the induction coil and the power supply, penetrating through the extractor walls to establish electrical connection without requiring external wiring, thereby simplifying the overall power supply connection

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the extractor is designed for easy removal, then user convenience is improved, but the electrical connection stability may be compromised

Engineering Contradiction:
Improveextraction removalVSAvoidelectrical connection stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The device is segmented into removable extractor and stationary cavity components, with the electrical connection system designed to maintain stable contact during insertion and removal operations through conductive elements that engage with electrical contacts in the cavity

Inventive Principle:
Principle #1Segmentation

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

The device effectively heats aerosol generation articles to produce inhalable aerosols and allows easy extraction while ensuring stable power supply to the induction coil, enhancing user convenience and efficiency.

Implementation Method 1

a susceptor, configured to be penetrated by a changing magnetic field and generate heat

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

an induction coil, configured to generate the changing magnetic field

Methodology Applied
Scientific EffectInduction heating: Induction Heating

Data Source

PatentEP4268638B1Aerosol generating device
Publication Date: 2025.12.17 SHENZHEN FIRST UNION TECH CO LTD
  • EP4268638B1 patent drawingFigure 1
  • EP4268638B1 patent drawingFigure 2
  • EP4268638B1 patent drawingFigure 3

AI summary

This application provides a vapor generation device, configured to heat a vapor generation article to generate an aerosol for inhalation, including: a cavity, configured to receive a vapor generation article; a susceptor, configured to be penetrated by a changing magnetic field and generate heat, to heat the vapor generation article received in the cavity; an extractor, at least partially received in the cavity and configured to extract the vapor generation article vapor generation article through movement in an axial direction of the cavity or removal from the cavity; an induction coil, configured to generate the changing magnetic field and held on the extractor; and a first electrical contact, configured to conduct with the induction coil when the extractor is received in the cavity, to supply power to the induction coil. Because the induction coil is formed on the extractor by the vapor generation device, the induction coil has a smaller spiral inner diameter than that wound on an outer wall forming a cavity component, so that the generated magnetic field may be more concentrated.