Heater Container Air-Channel Layout for Efficient Aerosol Generation

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Solution Overview

Problem

Existing flavor inhalers face challenges in efficiently arranging air channels and heaters within their small size to optimize aerosol generation.

Innovation Solution

A heater assembly with a cylindrical container design that includes a first channel adjacent to the chamber, a second channel through the chamber, and a closed bottom surface, where the heater is positioned on the peripheral surface, allowing efficient aerosol generation and utilization of dead space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a separate heater assembly is used to heat the container, then heating function is provided, but the container structure becomes complex and occupies more space

Engineering Contradiction:
Improveheating functionVSAvoidcontainer structure
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The heater assembly is integrated directly into the container structure, merging the heating function with the container body. The heater is positioned within the container's bottom wall or side wall, eliminating the need for a separate external heater assembly and reducing overall structural complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The container structure is designed to serve multiple functions: it acts as both the storage vessel and the heating chamber. The integrated heater allows the same structural elements to perform both containment and heating functions, reducing the need for additional specialized components.

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

2Temperature

If a separate heater assembly is used, then heating is achieved, but the overall device occupies more space

Engineering Contradiction:
Improveheating capabilityVSAvoiddevice space
Core Design Contradiction:
TemperatureVSVolume of moving object

Solution Approach 1:

The heater assembly is nested within the container structure, with the heater positioned inside the container's wall thickness or internal volume. This nesting approach allows the heating element to be contained within the existing container boundaries, minimizing the increase in overall device volume.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Temperature

If heating elements are placed inside the container, then heating efficiency is improved, but contamination risk increases

Engineering Contradiction:
Improveheating efficiencyVSAvoidcontamination risk
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

A flexible barrier membrane or thin film is introduced between the heating element and the container interior. This flexible barrier allows thermal energy to pass through while preventing direct contact between the heater and the contained material, thus maintaining heating efficiency while eliminating contamination risk.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

An intermediary barrier layer is positioned between the heating element and the container contents. This intermediary component transfers thermal energy from the heater to the container interior while preventing direct contact and potential contamination, acting as a protective mediator.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 configuration enhances aerosol generation efficiency by preheating airflow, conserving energy, and simplifying the structure while maintaining accurate temperature control.

Implementation Method 1

a heating element positioned inside the container and configured to heat the container to a desired temperature

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a sensor positioned inside the container and configured to sense a temperature of the container

Methodology Applied
Scientific EffectTemperature sensing:

Data Source

PatentEP3785555B1Heater assembly and container
Publication Date: 2026.05.06 JAPAN TOBACCO INC
  • EP3785555B1 patent drawingFigure 1
  • EP3785555B1 patent drawingFigure 2
  • EP3785555B1 patent drawingFigure 3~4

AI summary

A heater assembly comprises a container including a cylindrical portion that forms a chamber in which a flavor generating article is contained, and a heater arranged in a peripheral surface of the cylindrical portion. The container includes a first channel extending along a longitudinal direction of the cylindrical portion and located adjacently to the chamber in a direction intersecting with the longitudinal direction of the cylindrical portion, and a second channel extending through the chamber along the longitudinal direction of the cylindrical portion. The first channel is in communication with the second channel.