Aerosol Provision Device with Variable Channel Profiles
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Solution Overview
Problem
Aerosol provision devices, such as e-cigarettes, often fail to provide consistent aerosol delivery on a puff-by-puff basis due to variations in aerosol generation and transmission channel volumes, leading to inconsistent user experience.
Innovation Solution
The aerosol provision device incorporates multiple aerosol generating regions at different distances from the mouthpiece, with corresponding aerosol transmission channels having varying cross-sectional profiles to ensure consistent aerosol delivery, where channels closer to the mouthpiece have larger cross-sectional areas to offset longer delivery times from farther regions, allowing for quicker aerosol formation and consistent delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If aerosol generating regions are located at different distances from the mouthpiece, then the device can provide multiple aerosol generation zones, but the delivery time becomes inconsistent across regions
Solution Approach 1:
The patent applies local quality by giving different cross-sectional profiles to transmission channels depending on their location. Channels from first aerosol generating regions (closer to mouthpiece) have a first cross-sectional profile, while channels from second aerosol generating regions (farther from mouthpiece) have a second cross-sectional profile. This local differentiation compensates for distance variations, ensuring consistent aerosol delivery timing across all regions.
2Ease of manufacture
If transmission channels have uniform cross-sectional area, then manufacturing is simplified, but aerosol delivery consistency varies with distance from mouthpiece
Solution Approach 1:
The invention implements local quality by specifying that transmission channels have different cross-sectional profiles based on their origin region. Channels from first aerosol generating regions have a first cross-sectional profile, while channels from second aerosol generating regions have a second cross-sectional profile. This ensures that despite different path lengths, aerosol from all regions reaches the mouthpiece at consistent times, improving delivery reliability.
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 configuration ensures a more consistent and efficient aerosol delivery by matching the effective air-path volume and formation speed across different aerosol generating regions, enhancing user experience by providing a uniform aerosol quality and delivery time.
Implementation Method 1
the solid tobacco material is heated to a vaporization temperature to generate an aerosol
Implementation Method 2
a heater having a heating element arranged to receive source liquid from the reservoir, for example through wicking/capillary action
Data Source
AI summary
An aerosol provision device 702 is disclosed comprising a mouthpiece 726 and one or more first aerosol generating regions 730 located a first distance d1 from the mouthpiece 726. One or more second aerosol generating regions 731 are located a second distance d2 from the mouthpiece 726, wherein d2>d1. The aerosol provision device 702 further comprises one or more first aerosol transmission channels 710 arranged to communicate aerosol generated from the one or more first aerosol generating regions 730 to the mouthpiece 726, wherein the one or more first aerosol transmission channels 710 have a first cross-sectional or other profile and wherein one or more second aerosol transmission channels 711 are arranged to communicate aerosol generated from the one or more second aerosol generating regions 731 to the mouthpiece 726, wherein the one or more second aerosol transmission channels 711 have a second cross-sectional or other profile, and wherein the second cross-sectional or other profile is different from the first cross-sectional or other profile.