Aerosol-Generating Device Heating Control for Volatile Compound Delivery
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Solution Overview
Problem
Existing aerosol-generating devices struggle to maintain consistent delivery of volatile compounds throughout the user experience, with a significant amount being delivered only in the first puff.
Innovation Solution
The device employs a heating system with a controller that adjusts the heating element's temperature through multiple modes: increasing to a first temperature, adjusting to one or more second temperatures, and maintaining at a third temperature, to control aerosol production effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the heating element temperature is increased to deliver more volatile compounds in the first puff, then the initial aerosol delivery is improved, but the delivery consistency deteriorates throughout the user session
Solution Approach 1:
The controller is configured to control power to the heating element to: in a first heating mode, adjust a temperature of the heating element to increase the temperature from an initial temperature to a first temperature; in a second heating mode, adjust the temperature of the heating element to one or more second temperatures; in a third heating mode, adjust the temperature of the heating element to be constant and equal to a third temperature
2Stability of the object's composition
If the heating element temperature is maintained at a high level throughout the user session, then consistent aerosol delivery is maintained, but energy consumption increases
Solution Approach 1:
in a first heating mode, adjust a temperature of the heating element to increase the temperature from an initial temperature to a first temperature, wherein said first temperature is maintained for a first predetermined time period; in a second heating mode, adjust the temperature of the heating element to one or more second temperatures during a second predetermined time period, wherein the second predetermined time period is subsequent to the first predetermined time 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
This method ensures consistent delivery of volatile compounds throughout the user session, maintaining the sensory experience by managing the thermal inertia of the aerosol-forming substrate.
Implementation Method 1
an electrically operated heat source that is configured to heat an aerosol-generating article comprising an aerosol-forming substrate
Implementation Method 2
transfer of heat from the heat source to a physically separate aerosol-forming substrate
Implementation Method 3
volatile compounds are released from the aerosol-forming substrate by heat transfer to the aerosol-forming substrate from the heat source
Implementation Method 4
As the released compounds cool, they condense to form an aerosol that is inhaled by the user
Data Source
AI summary
A method of controlling aerosol production in an aerosol-generating system is provided, the system including an aerosol-generating article including an aerosol-forming substrate, the substrate being non-tobacco, a total aerosol-former content of the substrate being at least 30% by weight, and a water content of the substrate being between 5% and 35% by weight, an aerosol-generating device including a heating chamber to receive the article, a heating system associated with a heating element that to heat the substrate, and a power source providing power to the heating system; and the method including controlling power during heating of the substrate to form an aerosol for inhalation by a user and having a first heating mode, a second heating mode, and a third heating mode. An aerosol-generating system is also provided.