Aerosol Consumable Density Gradient for Consistent Pressure Drop
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Solution Overview
Problem
Existing non-combustible aerosol provision devices face challenges in efficiently delivering aerosol-generating materials due to inconsistent pressure drops and material distribution within consumables, leading to suboptimal performance.
Innovation Solution
The consumable design includes sections with continuously changing density and pressure drop characteristics, particularly in the second section, which increases towards the upstream end, ensuring a higher pressure drop and optimized material distribution for enhanced aerosol generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aerosol-generating material is distributed uniformly throughout the consumable, then manufacturing is simpler, but pressure drop becomes inconsistent leading to suboptimal aerosol delivery performance
Solution Approach 1:
The patent applies local quality by creating sections with different density characteristics. Specifically, the consumable is divided into sections where at least one section has a continuously changing density along its length, with density increasing towards the upstream end. This non-uniform density distribution optimizes pressure drop characteristics and aerosol generation efficiency in different regions of the consumable, resolving the contradiction between manufacturing simplicity and performance consistency.
2Reliability
If more aerosol-generating material is used, then aerosol delivery is improved, but the amount of material required increases consumption and device size
Solution Approach 1:
The patent applies parameter changes by modifying the density parameter of the aerosol-generating material along the length of the consumable. The density continuously increases towards the upstream end in at least one section, which optimizes the pressure drop characteristics and aerosol generation efficiency. This allows for more efficient material utilization, reducing the total quantity of aerosol-generating material needed while maintaining or improving aerosol delivery performance.
3Productivity
If pressure drop is reduced for easier material flow, then aerosol generation efficiency decreases
Solution Approach 1:
The patent applies dynamics by creating a dynamically varying density profile along the length of the consumable. The density continuously changes (increases) towards the upstream end in at least one section, which creates an optimized pressure drop profile. This dynamic density variation ensures sufficient pressure differential for efficient aerosol generation while maintaining appropriate material flow, resolving the contradiction between pressure drop and aerosol generation efficiency.
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 maintains or increases the overall pressure drop, allowing for less aerosol-generating material to be used while ensuring consistent and efficient aerosol delivery, improving the performance of non-combustible aerosol provision devices.
Implementation Method 1
wherein the pressure drop across the second section is higher than the pressure drop across the first section
Data Source
Figure 1~4
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AI summary
A consumable (101) for use with a non-combustible aerosol provision device (1). The consumable comprises a first section (102) and a second section (112) upstream of the first section. At least one of the first section and the second section comprises aerosol generating material. The second section comprises a continuously changing density along its length, increasing towards an upstream most end of the consumable. The pressure drop across the second section is higher than the pressure drop across the first section.