Aerosol Heater Current Control via Temperature Feedback
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Solution Overview
Problem
Existing aerosol generation technologies, such as traditional cigarettes, burn the aerosol generating substrate, which has disadvantages; there is a need for alternative methods that heat the substrate instead of burning it.
Innovation Solution
An electronic device that includes a controller, a heater, and a sensing unit, which heats an aerosol generating substrate using a supplied current and adjusts the current profile based on temperature changes to optimize aerosol generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed initial current profile is used for heating the aerosol generating substrate, then the device structure is simple, but the aerosol generation efficiency deteriorates when temperature conditions change due to substrate insertion timing
Solution Approach 1:
The sensing unit measures the temperature of the space where the aerosol generating substrate is located, and the controller adjusts the current profile based on this temperature feedback. This closed-loop control ensures optimal aerosol generation by adapting the heating current to actual temperature conditions, resolving the contradiction between system simplicity and generation efficiency.
Solution Approach 2:
The current profile is dynamically adjusted based on real-time temperature measurements rather than using a fixed predetermined profile. The controller modifies heating parameters according to when the substrate is inserted and the resulting temperature changes, optimizing aerosol generation across varying operational conditions.
2Productivity
If the current profile is adjusted based on temperature monitoring, then the aerosol generation efficiency is improved, but the device complexity increases due to additional sensing and control requirements
Solution Approach 1:
A temperature sensing unit provides real-time feedback to the controller, which adjusts the current profile accordingly. This feedback mechanism optimizes aerosol generation by ensuring the substrate is heated appropriately based on actual temperature conditions, accepting the necessary increase in system complexity for improved performance.
Solution Approach 2:
The patent replaces complex mechanical temperature measurement and control systems with electronic sensing and digital control. The sensing unit electronically detects temperature, and the controller digitally processes this information to adjust current profiles, reducing mechanical complexity while maintaining control precision.
3Measurement precision
If temperature monitoring is performed for a preset period after smoking completion, then the temperature change is accurately captured, but the time required for the operation increases
Solution Approach 1:
Temperature monitoring is performed for a preset period that is sufficient to capture the relevant temperature changes after smoking completion, without extending indefinitely. This partial monitoring approach achieves adequate measurement precision for determining when the substrate is ready for the next use, balancing accuracy with time efficiency.
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 electronic device efficiently generates an aerosol by heating the aerosol generating substrate, providing a more controlled and potentially healthier alternative to traditional smoking methods.
Implementation Method 1
a heater configured to heat an aerosol generating substrate inserted into the electronic device using a supplied current
Implementation Method 2
a sensing unit configured to measure a temperature of a space in which the aerosol generating substrate is located
Data Source
AI summary
One embodiment monitors the temperature of a space in which an aerosol-forming substrate is located, in order to heat the aerosol-forming substrate and, when the heating of a second aerosol-forming substrate newly inserted in the space begins, a current compensation value is calculated on the basis of a change in the temperature of the space, a compensation current profile is generated by adjusting an initial current profile on the basis of the current compensation value, and a current supplied to a heating part may be controlled on the basis of the compensation current profile.