Aerosol Heater Temperature Control via Multi-Phase Timing

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Solution Overview

Problem

Aerosol generating devices in the related art fail to provide consistent and plentiful smoking satisfaction due to excessive power consumption and insufficient particle generation, primarily because they comprehensively change heater temperatures based on the number of puffs or have short heating periods.

Innovation Solution

A method and device that control the temperature of a heater in an aerosol generating device by maintaining specific target temperatures for predetermined time periods, allowing the heater to reach a first target temperature for a first time period, then changing to a second target temperature for a second time period, with the sum of these periods within a preset range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If heater temperature is comprehensively changed by counting the number of puffs, then power consumption is reduced, but smoking satisfaction becomes inconsistent

Engineering Contradiction:

Improvepower consumptionVSAvoidsmoking satisfaction consistency

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The heating process is segmented into multiple distinct phases: initial heating phase, first maintenance phase, second maintenance phase, and cooling phase. Each phase has specific temperature targets and duration criteria, allowing precise control of power consumption while maintaining consistent smoking satisfaction across different puff counts.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The heater temperature control is made dynamic by adjusting temperature targets and maintenance durations based on real-time conditions. The controller modifies heating parameters according to the number of puffs taken, ensuring optimal smoking satisfaction while adapting power consumption to actual usage patterns.

Inventive Principle:

Principle #15Dynamics

2Use of energy by moving object

If heater heating period is set as short period, then power consumption is reduced, but particle generation becomes insufficient

Engineering Contradiction:

Improvepower consumptionVSAvoidparticle generation

Core Design Contradiction:

Use of energy by moving objectVSQuantity of substance

Solution Approach 1:

The heating process uses periodic action with distinct heating intervals and maintenance phases. The heater is activated in controlled periods with specific duration criteria, ensuring sufficient particle generation during active heating while minimizing power consumption during maintenance and cooling phases.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

Temperature and time parameters are precisely controlled and changed according to predefined criteria. The system transitions between different temperature levels (initial heating temperature, first maintenance temperature, second maintenance temperature) with specific duration requirements, optimizing both particle generation and power consumption.

Inventive Principle:

Principle #35Parameter changes

3Use of energy by moving object

If heater heating period is set as short period, then power consumption is reduced, but warmth of aerosol becomes insufficient

Engineering Contradiction:

Improvepower consumptionVSAvoidaerosol warmth

Core Design Contradiction:

Use of energy by moving objectVSTemperature

Solution Approach 1:

The system performs preliminary heating to reach the initial heating temperature before the user takes puffs. This ensures the heater is fully prepared and can immediately generate warm aerosol when needed, preventing insufficient warmth while minimizing the total heating period and power consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The heating process maintains continuous useful action through the first and second maintenance phases, where the heater sustains specific temperatures for criteria-based durations. This ensures continuous aerosol warmth during the smoking experience while controlling overall power consumption through defined maintenance periods.

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 provides high smoking satisfaction by increasing the migration of nicotine and glycerin, regardless of the number of puffs, and maintains a high stimulus and smoke volume throughout the smoking experience.

Implementation Method 1

a heater (130) that generates an aerosol by heating an aerosol generating substrate

Methodology Applied

Scientific EffectVaporization: Evaporation

Data Source

PatentUS12285055B2Method of controlling temperature of heater of aerosol generating device and the aerosol generating device

Publication Date: 2025.04.29 KT&G CO LTD

AI summary

As an embodiment of the present disclosure, there is disclosed an aerosol generating device including: a heater configured to generate an aerosol by heating an aerosol generating substrate; a storage unit configured to store information regarding a first time period and a second time period for controlling a temperature of the heater; and a controller configured to control power supplied to the heater, wherein the controller, when the first time period time elapses after the temperature of the heater reaches the first target temperature, changes the temperature of the heater to a second target temperature for the second time period, and the sum of the first time period and the second time period is a time period in a preset change.