Heating Chamber Structure for Fast Aerosol Substrate Heating

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Solution Overview

Problem

Existing aerosol generation devices face challenges in efficiently heating aerosol substrates while minimizing energy consumption and maintaining thermal efficiency, often resulting in inefficient heat distribution and user comfort issues due to heat leakage.

Innovation Solution

A portable aerosol generation device featuring a heating chamber with a thin, thermally insulating tubular side wall and a flanged portion gripped between washers, utilizing a thermally insulating material like PEEK and stainless steel, which is designed to efficiently conduct heat to the aerosol substrate while minimizing heat transfer to the outer casing, thereby reducing energy consumption and enhancing user comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a thin-walled heating chamber is used to reduce thermal mass and improve heating speed, then heating efficiency is improved, but structural strength and thermal insulation deteriorate

Engineering Contradiction:

Improveheating speedVSAvoidstructural strength

Core Design Contradiction:

ProductivityVSStrength

Solution Approach 1:

The heating chamber uses a composite construction with an inner thin-walled chamber (30-50 μm stainless steel) for rapid heating and an outer thicker wall (150-300 μm stainless steel) for structural strength and thermal insulation. This composite structure resolves the contradiction by combining materials of different thicknesses to simultaneously achieve fast heating and mechanical durability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The heating chamber is segmented into multiple functional layers: an inner thin-walled chamber for heat transfer, an outer thicker wall for structural support, and intermediate insulation layers. This segmentation allows each layer to optimize for its specific function, resolving the contradiction between thin walls for heating speed and thick walls for strength.

Inventive Principle:

Principle #1Segmentation

2Loss of energy

If thermal insulation is increased to reduce heat loss, then energy efficiency is improved, but heat transfer to the substrate deteriorates

Engineering Contradiction:

Improveheat lossVSAvoidheat transfer efficiency

Core Design Contradiction:

Loss of energyVSTemperature

Solution Approach 1:

The heating chamber has non-uniform wall thickness with different thermal insulation properties at different locations. The bottom and side walls have specific thicknesses optimized for their respective heat transfer needs, while the open top has minimal insulation to allow substrate insertion and aerosol delivery. This local quality variation resolves the contradiction between insulation and heat transfer.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Thermal insulation layers (such as PEEK washers and intermediate walls) are introduced as intermediary elements between the heating chamber and the external environment. These intermediaries control heat flow direction, providing thermal insulation where needed while maintaining heat transfer pathways to the substrate through conductive elements.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If heating power is increased to heat the substrate rapidly, then productivity is improved, but energy consumption increases

Engineering Contradiction:

Improveheating speedVSAvoidenergy consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The system dynamically adjusts heating parameters including power level, heating duration, and temperature setpoints based on operational conditions. This allows rapid heating when needed while reducing power consumption during maintenance phases, resolving the contradiction between heating speed and energy use.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The composite wall structure with varying thicknesses and thermal conductivities optimizes heat distribution, reducing the total energy required to achieve uniform substrate heating. The thinner sections provide rapid heat transfer while thicker sections prevent heat loss, collectively reducing overall energy consumption while maintaining heating speed.

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 solution enables rapid heating of aerosol substrates with improved thermal efficiency, reduced energy consumption, and enhanced user comfort by localizing heat and minimizing heat leakage, allowing for efficient aerosol generation and inhalation.

Implementation Method 1

heating chamber (108) arranged to receive a substrate carrier (114) having an aerosol substrate (128)... a heater (124) arranged to supply heat to the heating chamber (108)

Methodology Applied

Scientific EffectConduction (thermal): Conduction (thermal)

Implementation Method 2

The first and second washers are formed from a thermally insulating material, preferably wherein the thermally insulating material is polyether ether ketone (PEEK)

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS12185759B2Aerosol generation device and heating chamber therefor

Publication Date: 2025.01.07 JT INTERNATIONAL SA

AI summary

An aerosol generation device has a heating chamber for receiving a substrate carrier containing an aerosol substrate. The heating chamber includes a tubular side wall having an open first end; and a flanged portion at the open first end of the tubular wall, the flanged portion extending outwardly away from the tubular side wall. The flanged portion is gripped between a first washer and a second washer.