Complex Heating Aerosol Device Multi-Substrate Control
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Solution Overview
Problem
Existing aerosol generating devices are limited in their ability to heat smoking articles with multiple aerosol-forming substrates efficiently and effectively, particularly in managing tobacco mediums with low tensile strength and humidity sensitivity, and in controlling the inhalation of aerosols from liquid-based systems.
Innovation Solution
A complex heating type aerosol generating device that uses multiple separately controllable heating means, including resistance and induction heaters, to heat various aerosol-forming substrates within specific temperature ranges, with temperature control and pressure sensing to optimize aerosol generation and prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single heating means is used to heat multiple aerosol-forming substrates, then the device structure is simple, but the heating efficiency and temperature control for different substrates deteriorate
Solution Approach 1:
The heating system is divided into multiple independent heating means, each dedicated to heating a specific aerosol-forming substrate. This segmentation allows each heating element to be optimized for its specific substrate type, improving overall heating efficiency while maintaining manageable system complexity through modular design.
Solution Approach 2:
Each heating means is tailored to provide appropriate heating characteristics for its specific substrate location and type. The first heating means is configured for the first aerosol-forming substrate while the second heating means is configured for the second aerosol-forming substrate, allowing localized optimization of heating parameters for each substrate type.
2Productivity
If multiple heating means are used to heat different aerosol-forming substrates separately, then the heating efficiency and temperature control improve, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions by managing both the first and second heating means, as well as receiving signals from both temperature sensors. This multi-functionality allows the system to achieve sophisticated temperature control for multiple substrates without proportionally increasing the number of control components, thereby managing device complexity.
Solution Approach 2:
The control unit integrates the control functions for multiple heating means into a single component. By combining the control logic for the first heating means and the second heating means within one control unit, the system achieves efficient temperature management for multiple substrates while avoiding the complexity of having separate control units for each heater.
3Reliability
If temperature control is implemented for multiple heating means, then the aerosol generation consistency improves, but the device complexity and cost increase
Solution Approach 1:
Temperature sensors are positioned to detect the temperature of each heating means, and the control unit receives these temperature signals to adjust the heating operation accordingly. This feedback mechanism ensures consistent aerosol generation by maintaining optimal temperatures for each substrate, while the integrated control system manages the complexity of coordinating multiple feedback loops.
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 and variable heating of multiple aerosol-forming substrates, allowing for consistent aerosol production regardless of inhalation patterns and improving heating efficiency by preventing overheating and adjusting to different substrate materials.
Implementation Method 1
a first heating means provided in the device to heat the interior or exterior of the first aerosol-forming substrate of the smoking article within a first temperature range
Implementation Method 2
a second heating means provided in the device to heat the interior or exterior of the second aerosol-forming substrate of the smoking article within a second temperature range
Implementation Method 3
an inductor L2 (a cylindrical inductor coil wound in a helical type) is inductively coupled to the susceptor 21 of the tobacco-containing solid aerosol forming substrate 20
Implementation Method 4
An induction heating device includes an inductor arranged thermally adjacent to the aerosol-forming substrate, and the aerosol-forming substrate includes a susceptor. An alternating magnetic field of the inductor creates eddy current and hysteresis losses, which cause the susceptor to heat the aerosol-forming substrate
Implementation Method 5
first and second sensors provided in the device to sense the temperatures of the first and second heating means, respectively
Data Source
AI summary
The present invention relates to an aerosol generating device, and more particularly, to a complex heating type aerosol generating device that can heat a smoking article having a plurality of aerosol-forming substrates. According to an embodiment of the present invention, there is provided a complex heating type aerosol generating device, which is grippable and portable-sized, for a smoking article having a first aerosol-forming substrate and a second aerosol-forming substrate arranged at the upstream of the first aerosol-forming substrate, the complex heating type aerosol generating device comprising: a cavity provided in the device into which the smoking article can be inserted; a first heating means provided in the device to heat the interior or exterior of the first aerosol-forming substrate of the smoking article within a first temperature range; a second heating means provided in the device to heat the interior or exterior of the second aerosol-forming substrate of the smoking article within a second temperature range; first and second sensors provided in the device to sense the temperatures of the first and second heating means, respectively; a rechargeable battery provided in the device to function as a direct current power source; and a control unit provided in the device and electrically connected to the first and second sensors and the battery, to control the first and second heating means according to the sensed values of the first and second sensors, respectively, by receiving direct current power from the battery.