Stick Smoking Article With Carbon Heat Source for Low-Power Heating

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Solution Overview

Problem

Existing electrically heated smoking articles require high power consumption and suffer from changes in tobacco taste due to heating, necessitating a more efficient and taste-controllable system.

Innovation Solution

A stick-type smoking article with a carbon heat source containing a metal heat source, utilizing an airflow path controller to manage power consumption and tobacco taste through an automatic ignition device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a heater is used to heat the smoking article, then the tobacco taste can be controlled through temperature profile, but high power consumption occurs and physical properties change due to heating

Engineering Contradiction:

Improvetobacco heating temperatureVSAvoidpower consumption

Core Design Contradiction:

TemperatureVSUse of energy by moving object

Solution Approach 1:

The patent changes the heating mechanism from electrical resistance heating to chemical combustion of a carbon heat source. This parameter change transforms the energy source from electrical power to chemical energy, fundamentally resolving the high power consumption issue while maintaining temperature control capability through the combustion process

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the electrical heating system (heater) with a chemical combustion system (carbon heat source). This substitution eliminates the need for high electrical power while achieving the necessary heating function, directly addressing the power consumption contradiction

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Power

If high current is consumed during smoking, then the heating function is maintained, but the battery lifespan is damaged

Engineering Contradiction:

Improveheating powerVSAvoidbattery lifespan

Core Design Contradiction:

PowerVSDuration of action of stationary object

Solution Approach 1:

The patent replaces the electrical heating system with a chemical combustion system using a carbon heat source. This substitution eliminates high current consumption while maintaining heating functionality, thereby preserving battery lifespan and solving the contradiction between power delivery and battery durability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Use of energy by moving object

If a battery of sufficient capacity is used to support high power consumption, then heating performance is maintained, but device size increases

Engineering Contradiction:

Improveenergy capacityVSAvoidbattery size

Core Design Contradiction:

Use of energy by moving objectVSVolume of moving object

Solution Approach 1:

The patent replaces the large electrical battery system with a compact chemical energy source (carbon heat source). This substitution dramatically reduces the energy storage volume required while maintaining sufficient energy for heating, resolving the contradiction between energy capacity and device size

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Temperature

If temperature is increased to control tobacco taste, then flavor is improved, but physical properties of the smoking article change

Engineering Contradiction:

Improveheating temperatureVSAvoidphysical properties stability

Core Design Contradiction:

TemperatureVSStability of the object's composition

Solution Approach 1:

The patent introduces a carbon heat source as an intermediary between the energy source and the tobacco. This intermediary provides more stable and controllable heating, reducing direct thermal shock to the tobacco and minimizing unwanted physical property changes while maintaining taste control

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

Reduces power consumption, increases the number of cigarettes per charge, allows for battery miniaturization, and enhances smoking satisfaction by controlling tobacco taste and draw resistance.

Implementation Method 1

a current flowing in a metal heat source may be blocked when a carbon heat source is ignited

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

mainstream smoke containing an aerosol is generated by heating an aerosol generating material in a heated smoking article

Methodology Applied

Scientific EffectCombustion: Combustion

Data Source

PatentUS20250318573A1Stick-type smoking article and electrically heated smoking system comprising same

Publication Date: 2025.10.16 KT&G CO LTD

AI summary

The present invention provides an electrically heated smoking system comprising: a stick-type smoking article which comprises a carbon heat source containing a metal heat source; and an auto-ignition device.