Heat-Not-Burn Heating Assembly for Consistent Aerosol Output
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Solution Overview
Problem
Electrically heated smoking devices face performance inconsistencies and require large battery capabilities, limiting their ability to provide the sensations of cigarette, cigar, or pipe smoking without substantial combustion.
Innovation Solution
Aerosol delivery devices with a tubular control body, a heating member, and a power source that includes a flexible heating member and a removable aerosol source member, allowing for efficient heating of tobacco or tobacco-derived materials to form an inhalable aerosol, with features like a puff-activated switch and current regulating components to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If electrically heated smoking devices use large battery capabilities, then they can provide sufficient heat for aerosol generation, but device size and weight increase
Solution Approach 1:
The device divides the heating function into two separate heating members: a base heating member located in the control body and a substrate heating member located in the removable aerosol source member. This segmentation allows the heating functionality to be distributed, enabling the use of a smaller battery in the control body while still achieving sufficient overall heating capability.
Solution Approach 2:
The substrate heating member is nested within the aerosol source member, which itself is inserted into the control body. The base heating member in the control body provides initial heating, which is then transferred to the substrate heating member. This nested arrangement allows efficient heat transfer and reduces the power requirements of the main battery.
2Temperature
If electrically heated smoking devices use conventional heating members, then they can heat tobacco materials, but temperature control is inconsistent and performance varies
Solution Approach 1:
The control component monitors and regulates the heating process by controlling the power delivery to both heating members. This feedback mechanism ensures that the temperature reaches and maintains the desired level consistently, improving performance reliability. The system can adjust heating parameters based on detected conditions to maintain optimal temperature control.
Solution Approach 2:
The base heating member performs preliminary heating of the aerosol source member and substrate heating member before the substrate heating member directly heats the tobacco material. This pre-heating action ensures that when the substrate heating member engages with the tobacco, the temperature is already optimized, leading to more consistent and reliable aerosol generation.
3Device complexity
If electrically heated smoking devices use single heating member design, then device structure is simple, but heating efficiency and power usage are suboptimal
Solution Approach 1:
The heating system is segmented into a base heating member and a substrate heating member, each serving distinct functions. The base heating member handles preliminary heating and thermal management, while the substrate heating member focuses on direct tobacco material heating. This division of labor improves overall power efficiency by optimizing the role of each heating element.
Solution Approach 2:
The base heating member acts as an intermediary that transfers heat to the substrate heating member and aerosol source member. This intermediary heating approach improves thermal efficiency by pre-warming the components that directly contact the tobacco material, reducing the total energy required from the battery.
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 solution provides consistent aerosol production with improved performance characteristics, allowing for rapid temperature reach and efficient power usage, enhancing the smoking experience without significant combustion.
Implementation Method 1
The heating member may comprise a flexible heating member that surrounds a heating cylinder located within a portion of the engaging end of the control body
Implementation Method 2
at least a portion of the heating member may be in direct contact with the inhalable substance medium
Data Source
AI summary
Aerosol delivery devices are disclosed herein. In one aspect, an aerosol delivery device may comprise a control body, a heating member, a control component, a power source, and a removable aerosol source member that includes an inhalable substance medium, the aerosol source member being configured to be inserted into the control body and defining a heated end and a mouth end, the heated end configured, when inserted into the control body, to be positioned proximate the heating member. In some implementations, the heating member may comprise a base heating member and a substrate heating member, wherein the base heating member is located in the control body and the substrate heating member is located in the aerosol source member. In some implementations, the heating member may comprise a flexible heating member that surrounds a heating cylinder located within a portion of the engaging end of the control body.