Airway-Hole Aerosol Substrate for Uniform Puff Release
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Solution Overview
Problem
Existing smoke generating articles face high resistance to draw (RTD) during heating and significant puff-by-puff variations in aerosol volume.
Innovation Solution
The aerosol generating substrate is designed with uniformly distributed airway holes that penetrate through its length, increasing the surface area and improving heating efficiency, uniform aerosol release, and reducing resistance to draw.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the aerosol generating substrate is heated to volatilize aerosol former, then aerosol is generated, but the resistance to draw during heating is great
Solution Approach 1:
The aerosol generating substrate is divided into multiple segments by forming airway holes that penetrate through the substrate. This segmentation creates multiple independent aerosol generation zones, allowing parallel volatilization and release pathways that reduce the overall resistance to draw while maintaining adequate aerosol volume.
Solution Approach 2:
Airway holes are formed throughout the aerosol generating substrate to create a porous structure. This porous configuration increases the surface area for heat transfer and provides multiple channels for aerosol release, thereby reducing the resistance to draw during heating while ensuring sufficient aerosol generation.
2Quantity of substance
If high-temperature heating is applied to release aerosol former, then aerosol is generated, but puff-by-puff differences of aerosol volume are great
Solution Approach 1:
By segmenting the substrate into multiple zones through airway holes, each zone contributes relatively uniform aerosol output. The parallel operation of multiple segments ensures consistent total aerosol volume across puffs, reducing puff-by-puff differences while maintaining adequate aerosol generation through high-temperature heating.
Solution Approach 2:
The formation of airway holes changes the physical parameters of the substrate, creating uniform distribution channels for aerosol release. This structural modification ensures consistent aerosol delivery across multiple puffs by controlling the release parameters through the standardized airway hole geometry.
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 enhances the heating efficiency, uniformity of aerosol release, and user experience by reducing resistance to draw and stabilizing puff-by-puff aerosol volume.
Implementation Method 1
the surface area (the side walls of the airway holes equal to a part of surface of the aerosol generating substrate) of the aerosol generating substrate is increased, so that the heat of the aerosol generating substrate may enter the inside of the aerosol generating substrate from the outer surface
Implementation Method 2
an aerosol generating substrate capable of being heated to volatilize to generate aerosol
Data Source
Figure 1~2
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AI summary
Embodiments of the present application provide an aerosol generating substrate and an aerosol generating article. The aerosol generating substrate is internally formed with a plurality of airway holes, each of the airway holes penetrates through at least one end of the aerosol generating substrate in a length direction, and the airway holes are formed in the aerosol generating substrate in a uniformly distributed manner. The heating efficiency is improved, and the airway holes are uniformly distributed in the aerosol generating substrate, so the mass of the aerosol generating substrate in the unit volume may be relatively uniform, thus the aerosol release uniformity of the aerosol generating substrate in the heating process may be improved, the aerosol conveying uniformity and heated uniformity are facilitated, and then the feeling of a user may be improved.