Multi-Stage Heating Control for Aerosol-Generating Devices
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Solution Overview
Problem
Existing aerosol-generating devices fail to provide sufficient initial atomization and are prone to carbonization of the heating unit, affecting user experience and flavor perception.
Innovation Solution
The device employs a controller to manage power supply to a heating unit based on a temperature profile with multiple target temperatures, including a preheating section with distinct first and second target temperatures, and a smoking section with a third target temperature, to stabilize heating and prevent carbonization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the heating unit is heated at only one target temperature, then the heating process is simple, but the initial atomization amount is insufficient and the heating unit may be carbonized
Solution Approach 1:
The heating process is divided into multiple stages with different target temperatures. The preheating section uses a first target temperature while the smoking section uses a second target temperature, allowing the heating unit to be warmed gradually to prevent carbonization while ensuring sufficient atomization performance.
Solution Approach 2:
A preheating section is introduced before the smoking section to gradually warm the heating unit to the appropriate temperature. This preliminary heating action prevents thermal shock and carbonization that would occur if the heating unit were immediately heated to the high smoking temperature.
2Productivity
If the heating unit is heated rapidly to high temperature, then the atomization amount increases, but the heating unit becomes carbonized and flavors deteriorate
Solution Approach 1:
The heating process is segmented into a preheating section at a lower first target temperature and a smoking section at a higher second target temperature. This segmentation allows the heating unit to reach the necessary temperature for sufficient atomization without experiencing rapid heating that would cause carbonization.
Solution Approach 2:
The target temperature parameter is changed between different sections of the heating process. The preheating section operates at a lower temperature parameter while the smoking section operates at a higher temperature parameter, optimizing both atomization performance and preventing carbonization.
3Object-affected harmful factors
If the heating unit is heated slowly to prevent carbonization, then carbonization is reduced, but the initial atomization amount becomes insufficient
Solution Approach 1:
The heating process is divided into two distinct sections: a preheating section that slowly heats the unit to prevent carbonization, and a smoking section that operates at higher temperature to ensure sufficient atomization amount. Both requirements are satisfied through this segmentation.
Solution Approach 2:
The heating process continues without interruption through both the preheating and smoking sections. The useful action of heating is maintained continuously, transitioning from a protective low-temperature phase to a productive high-temperature phase, ensuring both carbonization prevention and sufficient atomization.
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 ensures stable heating, prevents carbonization, and provides a sufficient vapor amount during smoking, enhancing user experience by maintaining optimal flavor and atomization.
Implementation Method 1
a heating unit configured to heat an aerosol-generating substrate based on power supplied to the battery
Data Source
Figure 1~4
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Figure 8~9
AI summary
An aerosol-generating device controls power supplied to a heating unit based on a first target temperature during a first preheating section and control the power based on a second target temperature higher than the first target temperature during a second preheating section, such that the heating unit is stably heated to a target preheating temperature without carbonizing the aerosol generating substrate.