Aerosol Substrate Airway Layout for Consistent Puff Delivery
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Solution Overview
Problem
Aerosol generating products experience high inhalation resistance and significant variation in aerosol volume between puffs, leading to inconsistent user experience.
Innovation Solution
The aerosol generating substrate is designed with non-uniformly distributed airway holes extending through its length, allowing for improved heat transfer and aerosol release consistency by adjusting the aperture and wall thickness of these holes based on different heating methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If airway holes are uniformly distributed in the aerosol generating substrate, then the structure is simple and easy to manufacture, but the inhalation resistance is high and aerosol volume varies significantly between puffs
Solution Approach 1:
The patent applies local quality by creating non-uniform airway hole distribution where hole density and aperture vary in different regions of the substrate. Specifically, airway holes are more densely distributed in certain areas and less densely in others, with varying aperture sizes. This local variation optimizes heat transfer efficiency and aerosol generation consistency, directly addressing the reliability issue while accepting increased structural complexity as necessary for performance improvement.
2Ease of operation
If airway holes have large aperture to reduce inhalation resistance, then aerosol delivery improves, but the substrate structural integrity decreases
Solution Approach 1:
The patent resolves this contradiction through local quality by varying aperture sizes and hole densities across different regions. In regions requiring low inhalation resistance, larger apertures are provided; in regions requiring structural support, smaller apertures and higher hole density are used. This spatial variation allows optimization of both inhalation resistance and structural integrity simultaneously.
Solution Approach 2:
The patent segments the airway hole system into multiple groups with different aperture characteristics. Rather than using uniform holes throughout, the structure divides airway pathways into segments with varying properties, allowing each segment to be optimized for its specific functional requirement - either aerosol delivery or structural support.
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 design reduces inhalation resistance and ensures consistent aerosol delivery throughout the inhalation process, enhancing user experience by maintaining aerosol volume uniformity across puffs.
Implementation Method 1
The aerosol generating substrate is heated by an external heat source to a sufficient degree to diffuse. The aerosol generating substrate does not burn.
Implementation Method 2
it contains an aerosol generating substrate such as a tobacco raw material, a flavor raw material, and/or an atomizing agent that can volatilize to generate aerosols when heated
Data Source
AI summary
An aerosol generating substrate includes: a plurality of airway holes on an inside of the aerosol generating substrate. Each airway hole of the plurality of airway holes extends through at least one end of the aerosol generating substrate along a length direction. The plurality of airway holes are formed in the aerosol generating substrate in a non-uniform distribution.