Induction-Heated Cigarette Holder With Integrated Waterproof Inner Wall

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing aerosol generating devices face challenges in maintaining waterproof, heat-resistant, and corrosion-resistant structures, particularly at coupling portions where separate waterproof members are prone to deformation or damage under high temperatures.

Innovation Solution

An aerosol generating device with an integrated inner wall, coil, and heating body structure, where the heating body and supporting portion are integrally formed with the inner wall, providing a waterproof structure without separate waterproof members, and using materials like glass or ceramic for enhanced resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate waterproof members are installed at coupling portions, then waterproofing is achieved, but the structure deforms or damages under high temperatures

Engineering Contradiction:
Improvewaterproof integrityVSAvoidheat resistance
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The patent merges the heating body and supporting portion into a single integrated structure formed by sintering ferromagnetic powder and binder material. This integration eliminates separate waterproof members at coupling portions, preventing deformation or damage under high temperatures while maintaining waterproof integrity through the monolithic structure.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If separate waterproof members are used at coupling portions, then waterproofing is provided, but the number of parts and assembly complexity increases

Engineering Contradiction:
Improvewaterproof integrityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The heating body and supporting portion are combined into a single sintered component, eliminating the need for separate waterproof members and reducing assembly steps. This integration simplifies the overall structure while maintaining reliable waterproofing through the unified design.

Inventive Principle:
Principle #5Merging (Combining)

3Power

If traditional heating structures are used, then heating function is provided, but corrosion resistance and chemical resistance are insufficient

Engineering Contradiction:
Improveheating functionVSAvoidcorrosion resistance
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The patent uses a composite material system consisting of ferromagnetic powder (providing heating function through induction), binder material (providing structural integrity), and optional ceramic particles (enhancing corrosion and chemical resistance). This composite structure maintains heating effectiveness while improving resistance to harsh environments.

Inventive Principle:
Principle #40Composite materials

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 integrated structure maintains waterproof integrity even in high-temperature environments, ensuring effective aerosol generation while preventing leakage and enhancing durability.

Implementation Method 1

a coil provided outside the inner wall, surrounding at least a portion of the accommodating space, and generating an induced magnetic field; a heating body provided in the accommodating space and includes a ferromagnetic substance that generates heat due to an induced magnetic field

Methodology Applied
Scientific EffectInduction heating: Induction Heating

Data Source

PatentEP3817590B1Aerosol generating device and manufacturing method of the aerosol generating device
Publication Date: 2026.01.07 KT&G CO LTD
  • EP3817590B1 patent drawingFigure 1~3
  • EP3817590B1 patent drawingFigure 4~5
  • EP3817590B1 patent drawingFigure 6~7

AI summary

Provided is an aerosol generating device for heating a cigarette to generate aerosol, the aerosol generating device includes an inner wall configured to form an accommodating space for accommodating at least a portion of the cigarette; a coil provided outside the inner wall, surrounding at least a portion of the accommodating space, and configured to generate an induced magnetic field; a heating body provided in the accommodating space and comprising a ferromagnetic substance that generates heat by the induced magnetic field; and a supporting portion configured to support the heating body and integrally molded with the heating body, wherein the inner wall supports the supporting portion and is integrally molded with the supporting portion.