Heater Control Profile for Aerosol Delivery Stage Feedback
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Solution Overview
Problem
Existing aerosol generation devices lack intuitive feedback to users about the stages of the suction allowable period, making it difficult for users to understand their current phase of use.
Innovation Solution
The device features a heater that heats the outer periphery of a smoking article and is controlled to produce a delivery profile with one or more maximum values during the suction allowable period, allowing users to recognize stages through sensory feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a heater is used to heat the aerosol forming base-material from the inside or outer periphery, then aerosol generation is achieved, but the user cannot intuitively recognize the current stage in the suction allowable period due to minimal appearance changes
Solution Approach 1:
The patent implements feedback by controlling the heater to produce a delivery profile with distinct maximum values at different time points during the suction allowable period. This creates sensory feedback that allows users to intuitively recognize the current stage (initial, intermediate, or final period) through the changing sensations of aerosol delivery, thereby resolving the information loss problem without requiring additional complex display devices.
Solution Approach 2:
The patent applies parameter changes by varying the heater temperature profile over time to create distinct delivery phases. The control unit adjusts heating parameters to generate multiple maximum values in the delivery profile, transforming a static heating process into a dynamic one with recognizable stages, thus providing user feedback through physical parameter changes rather than visual displays.
2Loss of information
If the heater temperature is maintained high throughout the suction allowable period, then consistent aerosol delivery is achieved, but energy consumption increases and user stage recognition remains difficult
Solution Approach 1:
The patent implements periodic action by designing a heater control profile with distinct phases: an initial period with higher temperature to generate the first maximum value, an intermediate period with reduced temperature maintaining the maximum delivery, and a final period with temperature reduction for the second maximum value. This periodic temperature variation provides stage recognition feedback while reducing overall energy consumption compared to sustained high-temperature operation.
Solution Approach 2:
The patent applies preliminary anti-action by proactively reducing heater temperature during the intermediate period after achieving the initial maximum value. This preemptive temperature reduction prevents unnecessary energy consumption while maintaining adequate aerosol delivery, and creates a distinct sensory phase that helps users recognize they are in the intermediate stage of the suction allowable period.
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
Users can intuitively recognize the initial, intermediate, and final periods of the suction allowable period based on the changing sensations of aerosol delivery.
Implementation Method 1
a heater (30) which is constructed to be able to heat an outer periphery of a smoking article (110) including an aerosol source (111)
Data Source
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AI summary
This aerosol generation device is provided with: a heater configured so as to be capable of heating the outer circumference of a smoking article including an aerosol source; and a controller for controlling the heater. The controller is configured to control the heater so that an aerosol delivery profile in a preset period in which suction is possible includes one or more local maximum values between the start point and the end point of the period in which suction is possible.