Induction Heating Body Integrally Molded With Supporting Portion

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Solution Overview

Problem

Existing aerosol generating devices face challenges in maintaining waterproof and corrosion-resistant structures, especially when exposed to high temperatures, due to the separation of heating and supporting components.

Innovation Solution

An aerosol generating device with an induction heating system where the heating body and supporting portion are integrally formed with the inner wall, using materials like glass or ceramic for enhanced heat, chemical, and corrosion resistance, eliminating the need for separate waterproof members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate waterproof members are installed at coupling portions between heating body and supporting portion, then waterproof structure can be maintained, but device complexity increases and reliability decreases at high temperatures

Engineering Contradiction:
Improvewaterproof structure stabilityVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The heating body and supporting portion are merged into a single integrally molded component. The supporting portion is formed as an extension of the heating body, eliminating the need for separate waterproof members at their coupling portion. This integration maintains waterproof structure stability while reducing device complexity and eliminating potential failure points from separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrally molded supporting portion serves multiple functions: it provides structural support for the heating body, maintains the waterproof structure, and eliminates the need for separate waterproof sealing components. This multi-functionality reduces the total number of parts while improving reliability at high temperatures.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If traditional heating components are used, then manufacturing is simpler, but heat resistance, chemical resistance, and corrosion resistance are insufficient at high temperatures

Engineering Contradiction:
Improveheat and chemical resistanceVSAvoidmanufacturing process complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The heating body is constructed using composite materials that combine ferromagnetic substance particles dispersed in a binder resin. This composite structure provides both the necessary magnetic properties for induction heating and the required heat resistance, chemical resistance, and corrosion resistance. The ferromagnetic particles enable efficient induction heating while the binder resin matrix provides structural integrity and resistance to harsh environments.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The invention changes the material parameters by using a binder resin with specific glass transition temperature and melting point characteristics. The binder resin is selected to have a glass transition temperature of -50°C to 100°C and a melting point of 150°C to 300°C, ensuring the material maintains its properties at high operating temperatures while remaining manufacturable through injection molding processes.

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If heating body and supporting portion are separately manufactured, then manufacturing flexibility is higher, but assembly complexity increases and waterproof integrity is compromised

Engineering Contradiction:
Improvemanufacturing flexibilityVSAvoidassembly complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The heating body and supporting portion are manufactured as a single integrated component through injection molding. The supporting portion is formed as an integral extension of the heating body, eliminating assembly steps and ensuring waterproof integrity. This approach maintains manufacturing flexibility through mold design while completely eliminating assembly complexity between these components.

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 maintains a waterproof structure at high temperatures without additional waterproof members, ensuring effective aerosol generation and improved 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

PatentUS12120755B2Aerosol generating device with inductive coil surrounding an inner wall with a body heated by the coil and system using the same and method of manufacturing thereof
Publication Date: 2024.10.15 KT&G CO LTD
  • US12120755B2 patent drawing
  • US12120755B2 patent drawing
  • US12120755B2 patent drawing

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.