Puff-Responsive Heater Power Control in Aerosol Generators
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Solution Overview
Problem
Aerosol-generating devices lack the ability to dynamically adjust power supplied to the heater during preheating based on the intensity of inhalation by the user and usage cycles, leading to suboptimal aerosol generation.
Innovation Solution
An aerosol-generating device with a puff sensor and controller that adjusts power supply to the heater, providing first power when puff intensity is below a threshold and higher second power when intensity exceeds the threshold, allowing for adaptive preheating based on inhalation intensity and usage patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed power is supplied to the heater during preheating, then the device structure is simple, but the aerosol generation efficiency is suboptimal
Solution Approach 1:
The patent applies dynamics by transitioning from fixed power supply to dynamic power adjustment during preheating. The controller modifies the power supplied to the heater in real-time based on puff detection signals, enabling the system to adapt its heating intensity according to actual usage conditions rather than operating at a constant power level.
Solution Approach 2:
The patent implements feedback control by using puff detection signals from the sensor to inform power supply adjustments. The controller receives feedback about user inhalation events and uses this information to regulate the heater power during preheating, creating a closed-loop control system that optimizes aerosol generation based on actual demand.
2Productivity
If power is adjusted based on puff intensity, then aerosol production is optimized, but the control system complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the power supply parameter (voltage or current to the heater) based on detected puff intensity. The controller adjusts electrical parameters dynamically - supplying higher power when strong puffs are detected and lower power during weak puffs - thereby optimizing aerosol production through continuous parameter modulation rather than fixed settings.
3Productivity
If high power is supplied during preheating, then aerosol generation is enhanced, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making power supply conditional and variable rather than continuously high. The system dynamically adjusts heater power based on real-time puff detection, supplying high power only when and when needed for aerosol generation, and reducing power during intervals between puffs, thereby optimizing the balance between aerosol production and energy consumption.
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
Enables efficient aerosol generation by matching power supply to inhalation intensity, optimizing aerosol production and user experience.
Implementation Method 1
a heater configured to heat the aerosol-generating substance
Implementation Method 2
a puff sensor configured to output a signal corresponding to a puff
Data Source
AI summary
An aerosol-generating device and an operation method thereof are disclosed. The aerosol-generating device of the disclosure includes a heater, a power supply circuit for supplying power to the heater, a puff sensor, and a controller. The controller controls the power supply circuit such that the heater is heated in a first period during which a puff is detected. Upon determining that the intensity of the puff detected in the first period is equal to or less than a predetermined reference intensity, the controller controls the power supply circuit such that first power is supplied to the heater in a second period subsequent to the first period. Upon determining that the intensity of the puff detected in the first period exceeds the reference intensity, the controller controls the power supply circuit such that second power, which is higher than the first power, is supplied to the heater in the second period.