Flavor Inhaler With Multilayer Insulation for Compact Heating

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing flavor inhalers face challenges in miniaturization and thermal insulation, with the arrangement of separate heat insulation parts increasing the diameter and compromising the insulating function.

Innovation Solution

A flavor inhaler design featuring a multi-layered heat-resistant sheet-like insulation member wrapped around the accommodation part, with direct contact to the heating part and separated from the housing, reducing size and enhancing thermal insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If separate heat insulation parts are arranged around the heating part, then thermal insulation function is provided, but the diameter of the atomization unit increases

Engineering Contradiction:
Improvethermal insulation functionVSAvoiddiameter of atomization unit
Core Design Contradiction:
TemperatureVSLength of stationary object

Solution Approach 1:

The patent merges the heat insulation function directly into the accommodation part by forming an insulating layer on its outer surface, eliminating the need for separate heat insulation parts. This integration maintains effective thermal insulation while reducing the overall diameter of the atomization unit.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The heat insulation layer is nested within the accommodation part structure itself, forming an integrated composite component. This nesting approach allows the insulation function to be embedded within the existing structure rather than adding external layers, thereby minimizing dimensional increases.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Length of stationary object

If the heat insulation part is made thinner to reduce size, then the atomization unit size is reduced, but the insulating function deteriorates

Engineering Contradiction:
Improvethickness of heat insulation partVSAvoidinsulating function
Core Design Contradiction:
Length of stationary objectVSTemperature

Solution Approach 1:

The patent employs composite material construction for the accommodation part, combining a base material with an insulating layer having different thermal properties. This composite structure achieves high thermal insulation performance with minimal thickness by leveraging the complementary characteristics of different materials.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The invention optimizes the thermal insulation performance by carefully controlling the thickness and thermal conductivity parameters of the insulating layer. By adjusting these parameters within specific ranges, the patent achieves effective insulation with reduced thickness, resolving the contradiction between size reduction and insulating function maintenance.

Inventive Principle:
Principle #35Parameter changes

3Temperature

If multiple separate heat insulation parts are used, then thermal insulation is improved, but the number of components and device complexity increase

Engineering Contradiction:
Improvethermal insulation performanceVSAvoidnumber of heat insulation parts
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The patent combines multiple heat insulation functions into a single integrated accommodation part with an insulating layer, reducing the number of separate components. This merger maintains comprehensive thermal insulation performance while simplifying the overall device structure and reducing assembly complexity.

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

The design achieves a compact size while improving thermal insulation, reducing heat dissipation, and maintaining a safe surface temperature, thereby enhancing the overall performance of the atomization unit.

Implementation Method 1

a first heat insulation part arranged to cover at least a portion of the accommodation part to reduce heat dissipation to the outside of the accommodation part

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentEP4635322A1Flavor inhaler and method for manufacturing flavor inhaler
Publication Date: 2025.10.22 JAPAN TOBACCO INC
  • EP4635322A1 patent drawingFigure 1
  • EP4635322A1 patent drawingFigure 2
  • EP4635322A1 patent drawingFigure 3

AI summary

Provided is a flavor inhaler. This flavor inhaler comprises: a cylindrical accommodation part that accommodates a consumable material; a heating part that heats the consumable material accommodated in the accommodation part; a first heat insulation part that is positioned so as to cover at least a portion of the accommodation part and inhibits the release of heat outside the accommodation part; and a housing that accommodates the accommodation part, the heating part, and the first heat insulation part. The first heat insulation part has a multilayer structure in which a heat-resistant sheet-like heat insulation member is wrapped around the periphery of a cylindrical portion of the accommodation part in multiple layers. The innermost surface of the first heat insulation part is in contact with the accommodation part and/or the heating part, and the outermost surface of the first heat insulation part is isolated from the inner surface of the housing.