Humidity-Sensing Heater Control for Aerosol Generation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing aerosol generating devices struggle to maintain optimal aerosol generation by adjusting the preheating temperature profile based on the moisture content of the aerosol generating material, leading to issues of excessive water vapor generation or insufficient aerosol production due to moisture imbalances.
Innovation Solution
An aerosol generating device equipped with a humistor sensor to detect humidity levels, allowing a processor to control the heater's power supply accordingly, ensuring appropriate temperature profiles for optimal aerosol production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the heater heats the aerosol generating article at a fixed temperature profile, then the device structure is simple, but the aerosol generation is suboptimal when moisture content varies
Solution Approach 1:
The patent implements a feedback control system where a humidity sensor detects the moisture content of the aerosol generating article, and the processor adjusts the heater's temperature profile based on this feedback. This closed-loop control enables the system to adapt to varying moisture levels while maintaining optimal aerosol generation conditions.
Solution Approach 2:
The patent changes the heating parameters (temperature profile) dynamically based on the detected humidity level. When humidity is detected to be within a predetermined range, a first temperature profile is applied; when outside this range, a second temperature profile is applied. This parameter adjustment resolves the contradiction by adapting to moisture variations without requiring complex hardware modifications.
2Adaptability or versatility
If the heating rate is decreased to handle over-wet conditions, then the device can process various moisture levels, but excessive water vapor is generated causing high-temperature aerosols
Solution Approach 1:
The humidity sensor provides real-time feedback on the moisture content of the aerosol generating article. The processor uses this feedback to adjust the heating rate dynamically, increasing it when moisture is low and decreasing it when moisture is high, thereby preventing both over-wet and over-dry conditions while maintaining appropriate aerosol temperature.
Solution Approach 2:
The patent transitions from a static, fixed temperature profile to a dynamic, adjustable temperature profile that responds to real-time humidity measurements. This dynamic adjustment allows the system to optimize heating parameters for different moisture conditions, preventing excessive water vapor generation while maintaining acceptable aerosol temperatures.
3Productivity
If the heating rate is increased to handle over-dry conditions, then sufficient aerosols can be generated, but the device cannot handle over-wet conditions properly
Solution Approach 1:
The patent implements a dynamic heating system that adjusts the heating rate based on real-time humidity detection. When the aerosol generating article is over-dry, the system increases the heating rate to generate sufficient aerosols. When over-wet, it decreases the heating rate to prevent excessive water vapor. This dynamic adjustment enables the device to handle various moisture conditions while maintaining optimal aerosol generation.
Solution Approach 2:
The system changes the heating parameter (temperature profile) based on the detected humidity level. By comparing the measured humidity against a predetermined range and adjusting the heating rate accordingly, the system achieves both high productivity under optimal conditions and adaptability to varying moisture content, resolving the contradiction between aerosol generation amount and moisture adaptability.
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
The device effectively adjusts heating parameters to generate appropriate aerosol amounts and temperatures by accounting for moisture variations in the aerosol generating article, preventing over-wet or over-dry conditions.
Implementation Method 1
a heater arranged on one surface of a film and configured to heat the aerosol generating article when power is supplied thereto
Implementation Method 2
a humistor sensor arranged on the one surface of the film and configured to detect humidity of the aerosol generating article
Implementation Method 3
a processor electrically connected to the heater and the humistor sensor, wherein the processor is configured to control power supply to the heater, based on the humidity of the aerosol generating article detected by the humistor sensor
Data Source
AI summary
Provided is an aerosol generating device including a housing including an accommodation portion into which an aerosol generating article is inserted, a heater arranged on one surface of a film and configured to heat the aerosol generating article when power is supplied thereto, a humistor sensor arranged on the one surface of the film and configured to detect humidity of the aerosol generating article, and a processor electrically connected to the heater and the humistor sensor, wherein the processor is configured to control power supply to the heater, based on the humidity of the aerosol generating article detected by the humistor sensor.