Aerosol Heater Feedback Control for Fast Warm-Up and Stable Output
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Solution Overview
Problem
Existing aerosol generation devices face challenges in minimizing the time to start heating and stabilizing aerosol production, which affects the convenience and quality of the aerosols, including flavor and taste, for the user.
Innovation Solution
The aerosol generation device employs a control unit that uses feedback control to manage power supplied to a heating element, comparing operation values with predetermined values to ensure efficient heating of an aerosol-forming substrate, thereby stabilizing aerosol generation and maintaining consistent flavor and taste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If heating power is increased to reduce heating time, then heating speed is improved, but temperature control stability deteriorates
Solution Approach 1:
The control unit implements periodic heating cycles with multiple phases: a first heating phase with higher power to rapidly increase temperature, followed by a second heating phase with reduced power to maintain stability. This periodic action pattern allows the system to achieve both fast heating and stable temperature control by alternating between aggressive heating and maintenance modes.
Solution Approach 2:
The control unit dynamically changes heating power parameters based on temperature feedback. It adjusts the power supply level according to the current temperature state, transitioning between different power levels to optimize both heating speed and stability. This parameter adaptation enables the system to respond to real-time conditions and balance the competing requirements of speed and stability.
2Productivity
If heating power is increased to generate aerosols faster, then aerosol generation speed is improved, but aerosol quality stability deteriorates
Solution Approach 1:
The control unit employs periodic heating phases where a high-power first heating phase rapidly generates aerosols, followed by a lower-power second heating phase that maintains consistent aerosol quality. This rhythmic heating pattern enables the system to deliver fast aerosol generation while ensuring stable flavor and taste characteristics through the stabilizing second phase.
Solution Approach 2:
The control unit continuously monitors temperature and adjusts heating power based on feedback from temperature sensors. This closed-loop control ensures that aerosol generation proceeds at high speed when appropriate while automatically reducing power to maintain quality stability when temperature deviations occur, thus resolving the contradiction between speed and quality consistency.
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 allows for rapid heating and stable aerosol production, ensuring that users can inhale aerosols quickly and consistently, improving the overall user experience by maintaining flavor and taste quality.
Implementation Method 1
a rod-shaped electric heating element is inserted into the aerosol generation article, and the electric heating element inserted into the aerosol generation article heats the aerosol generation article
Implementation Method 2
a metal piece (also referred to as 'susceptor') that generates heat by eddy current generated therein by a magnetic field penetrating the metal piece is inserted in advance in the aerosol generation article
Implementation Method 3
the aerosol generation article is mounted to an aerosol generation device having a coil, AC current is enabled to flow through the coil to generate a magnetic field, and the metal piece in the aerosol generation article mounted to the aerosol generation device is heated using an induction heating (IH) phenomenon
Data Source
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AI summary
In the present embodiment, an aerosol generation device includes a load and a control unit. The load heats an aerosol generation article, which includes an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source, by using power that is supplied from a power source. The control unit is 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.