Flavor Inhaler Heat Diffuser Protecting an Adjacent Control Unit

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Solution Overview

Problem

The heat diffused from the accommodating portion in conventional flavor inhalers can adversely affect the control unit, which is arranged adjacent to it.

Innovation Solution

The flavor inhaler design includes a heat diffusing portion that covers the accommodating portion and is partially open on the control unit side, extending beyond it to promote radial heat diffusion while protecting the control unit from heat, and using non-conductive and conductive materials to facilitate wireless communication and uniform heat distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the control unit is arranged adjacent to the accommodating portion, then the device structure is compact, but the control unit is exposed to heat from the accommodating portion

Engineering Contradiction:
Improvedevice structureVSAvoidheat exposure
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

A heat diffusing portion is introduced as an intermediary component between the accommodating portion and the control unit. This heat diffusing portion covers at least part of the accommodating portion and has a portion that is open in the circumferential direction on the control unit side, allowing it to diffuse heat away from the control unit while maintaining compact device structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Temperature

If the heat diffusing portion covers the accommodating portion, then heat diffusion is improved, but the control unit may be affected by diffused heat

Engineering Contradiction:
Improveheat diffusionVSAvoidheat exposure
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The heat diffusing portion has different structural characteristics at different locations: it covers the accommodating portion to diffuse heat, but has an open portion in the circumferential direction on the control unit side to protect the control unit. This local differentiation allows simultaneous achievement of heat diffusion and control unit protection.

Inventive Principle:
Principle #3Local quality

3Temperature

If the heat diffusing portion extends beyond the accommodating portion, then radial heat diffusion is promoted, but the control unit side may experience heat exposure

Engineering Contradiction:
Improveradial heat diffusionVSAvoidheat exposure
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The heat diffusing portion has an asymmetric structure where it extends beyond the accommodating portion toward the control unit to promote radial heat diffusion, but includes an open portion in the circumferential direction specifically on the control unit side. This asymmetric design enables differential heat management in different directions.

Inventive Principle:
Principle #4Asymmetry

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 effectively diffuses heat away from the control unit, preventing overheating and ensuring uninterrupted wireless communication, while maintaining efficient heat distribution within the inhaler.

Implementation Method 1

a heat diffusing portion which is arranged so as to cover at least part of the accommodating portion and diffuses heat of the accommodating portion

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentEP4635321A1Flavor inhaler
Publication Date: 2025.10.22 JAPAN TOBACCO INC
  • EP4635321A1 patent drawingFigure 1
  • EP4635321A1 patent drawingFigure 2
  • EP4635321A1 patent drawingFigure 3

AI summary

Provided is a flavor inhaler. This flavor inhaler comprises a tubular accommodation portion which accommodates a consumable to heat same, a heat dissipation portion which is disposed such that the heat dissipation portion covers at least a part of the accommodation portion and which dissipates the heat of the accommodation portion, a control unit which controls an operation of the flavor inhaler, and a housing which accommodates the accommodation portion, the heat dissipation portion, and the control unit. The accommodation portion and the control unit are disposed adjacent to each other in a direction orthogonal to the length direction of the flavor inhaler. The heat dissipation portion is partially opened on the control unit side in the circumferential direction of the accommodation portion.