Aerosol Heater Preheating Profiles for Continuous Smoking

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Solution Overview

Problem

Aerosol generating devices face inconvenience due to high-temperature aerosols generated during continuous smoking, as the heater is preheated using the same temperature profile for both initial and continuous smoking, leading to user discomfort and increased power consumption.

Innovation Solution

The device employs a processor to control the heater's power supply using distinct temperature profiles for initial and continuous smoking, adjusting the temperature drop section to reduce aerosol heat and power consumption by extending the temperature drop time during continuous smoking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the heater is preheated using the same temperature profile for both initial and continuous smoking, then the heating operation is simplified, but high-temperature aerosols are generated during continuous smoking causing user discomfort

Engineering Contradiction:

Improvetemperature profile controlVSAvoidaerosol temperature

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent divides the smoking operation into two distinct segments: initial smoking and continuous smoking. Different temperature profiles are assigned to each segment - a first temperature profile for initial smoking and a second temperature profile for continuous smoking. This segmentation allows the system to optimize heating parameters for each specific operation type, preventing excessive aerosol temperature during continuous smoking while maintaining effective heating during initial smoking.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic adjustment of the temperature profile based on the smoking operation type. The processor dynamically selects between the first temperature profile (with shorter temperature drop time) for initial smoking and the second temperature profile (with extended temperature drop time) for continuous smoking. This dynamic adaptation enables the system to respond to different operational contexts, maintaining aerosol temperature within comfortable ranges during continuous smoking.

Inventive Principle:

Principle #15Dynamics

2Use of energy by moving object

If the heater preheating time is reduced for continuous smoking, then power consumption decreases, but the heater may not reach optimal temperature for aerosol generation

Engineering Contradiction:

Improvepower consumptionVSAvoidaerosol generation quality

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent changes the temporal parameters of the temperature profile based on smoking operation type. For continuous smoking, the second temperature profile extends the temperature drop section duration while maintaining the target temperature achievement. This parameter adjustment allows the heater to reach sufficient temperature for reliable aerosol generation while optimizing the cooling phase to reduce overall power consumption and aerosol temperature.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent maintains continuous useful action by ensuring the heater reaches the necessary target temperature for aerosol generation in both initial and continuous smoking modes. The second temperature profile for continuous smoking is designed to maintain adequate heating duration to ensure reliable aerosol production, while optimizing the subsequent temperature drop phase to reduce power consumption and aerosol temperature.

Inventive Principle:

Principle #20Continuity of useful action

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 approach reduces user discomfort by lowering aerosol heat and decreases power consumption during continuous smoking by prolonging the temperature drop section in the preheating profile.

Implementation Method 1

a heater configured to heat at least a portion of an aerosol generating article

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

a heater configured to heat at least a portion of an aerosol generating article

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 3

a temperature sensor configured to measure a temperature of the heater

Methodology Applied

Scientific EffectThermal detection:

Data Source

PatentUS20240251874A1Aerosol generating device capable of controlling preheating operation for aerosol generating article and operating method thereof

Publication Date: 2024.08.01 KT&G CO LTD

AI summary

An aerosol generating device according to an embodiment including a heater configured to heat at least a portion of an aerosol generating article, a temperature sensor configured to measure a temperature of the heater, and a processor configured to control power supply to the heater according to a first temperature profile for a first smoking operation, wherein the processor is further configured to detect a second smoking operation after the first smoking operation, based on a temperature of the heater measured by the temperature sensor, and to control power supply to the heater according to a second temperature profile in which a time corresponding to a temperature drop section of the first temperature profile is corrected, when the second smoking operation is detected. In addition, various embodiments are available through the specification.