Aerosol Heating Control with Feedback Limiter Adjustment
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Solution Overview
Problem
Existing aerosol generation devices face challenges in quickly heating aerosol generation articles to stabilize aerosol production and maintain flavor and taste quality, as they often require lengthy heating times and experience variations in aerosol generation during use.
Innovation Solution
The aerosol generation device incorporates a control unit that uses feedback control to regulate power supply to the heating element, adjusting based on temperature measurements to ensure consistent aerosol production by shifting between feed-forward and feedback control modes, and expanding the limiter width in the feedback control phase to stabilize aerosol generation over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If heating power is increased to reduce heating time, then heating speed improves, but temperature control stability deteriorates
Solution Approach 1:
The patent applies dynamic control by switching between feed-forward control (for rapid heating) and feedback control (for stable temperature maintenance). The control mode dynamically adapts based on the heating stage, allowing the system to achieve both fast heating and stable temperature control.
Solution Approach 2:
The patent implements feedback control mechanisms where temperature sensors continuously monitor the heating element temperature and adjust power delivery accordingly. This feedback loop prevents overheating while maintaining stable temperature during the aerosol generation phase.
2Stability of the object's composition
If heating power is increased to stabilize aerosol generation, then aerosol production consistency improves, but energy consumption increases
Solution Approach 1:
The patent uses periodic heating cycles with distinct phases: a rapid heating phase followed by a stable aerosol generation phase. During the stable phase, the system maintains optimal temperature with adjusted power levels, achieving consistent aerosol output while managing energy consumption through rhythmic control patterns.
Solution Approach 2:
The patent changes operational parameters (power levels, duty cycles) based on the heating stage. During rapid heating, higher power is applied; during stable aerosol generation, power is optimized to maintain temperature efficiency. This parameter adaptation achieves stable aerosol generation with improved energy efficiency.
3Duration of action of moving object
If heating is prolonged to ensure complete vaporization, then aerosol generation completeness improves, but device durability deteriorates
Solution Approach 1:
The patent applies preliminary high-power heating to rapidly bring the heating element to optimal temperature, reducing the total duration required for complete aerosol generation. This preliminary action prevents prolonged heating by achieving target temperature quickly, thereby protecting device durability.
Solution Approach 2:
The patent uses rapid heating phases to quickly traverse the temperature ramp-up period, minimizing the time the heating element operates at high stress. By rushing through the heating phase efficiently and transitioning to a maintenance phase, the system reduces overall heating duration while ensuring complete vaporization, thus improving device durability.
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 significantly reduces heating time, stabilizes aerosol production, and maintains consistent flavor and taste by efficiently managing power delivery and temperature control, preventing overheating and prolonging device durability.
Implementation Method 1
a load 3 configured to heat an aerosol generation article 9 by using power that is supplied from a power source 4
Implementation Method 2
a control unit 8 configured to acquire a temperature of the load 3 and to control power that is supplied from the power source 4 to the load 3 by feedback control
Data Source
AI summary
An aerosol generation device includes: a load configured to heat an aerosol generation article by using power that is supplied from a power source, the aerosol generation article comprising an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a control unit configured to acquire a temperature of the load and to control the power that is supplied from the power source to the load by feedback control. The control unit is configured to determine the power that is supplied from the power source to the load, based on comparison between an operation value obtained in the feedback control and a predetermined value.