Reusable Filter for Smoking Article Moisture Removal
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Solution Overview
Problem
Portable aerosol generation devices face issues with high humidity in the generated aerosol due to varying environmental conditions, leading to uncomfortable and potentially dangerous inhalation temperatures.
Innovation Solution
A reusable filter with a selective water-absorbing medium, such as silica or molecular sieves, is used to remove moisture from the aerosol, reducing humidity and temperature, and can be attached to and detached from aerosol generating articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a disposable filter is used in portable aerosol generation devices, then the device structure remains simple and cost-effective, but the filter cannot be reused and must be discarded after single use
Solution Approach 1:
The filter is designed to be recovered and reused across multiple aerosol generating articles rather than being discarded after single use. The filter body with integrated cavity and filter portion can be attached to and detached from multiple consumables, extending its service life and reducing waste.
2Reliability
If a reusable filter with complex filtering technology is used, then water removal efficiency improves, but the device complexity increases
Solution Approach 1:
The filter portion utilizes porous water-absorbing materials such as silica or molecular sieves that are inherently effective at removing water from aerosols. These porous structures provide high surface area for water adsorption while maintaining a relatively simple overall filter design.
Solution Approach 2:
The filter acts as an intermediary component between the aerosol generation chamber and the user's mouthpiece, selectively removing water vapor through the porous filter medium while allowing other aerosol components to pass through.
3Temperature
If the filter absorbs water from the aerosol, then the inhaled vapour temperature decreases and becomes cooler, but the filter becomes saturated and less effective over time
Solution Approach 1:
The filter's water absorption capacity can be restored by changing the physical or chemical parameters of the filter material through regeneration processes, such as heating to desorb accumulated water, thereby restoring its effectiveness for continued use.
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 filter effectively reduces aerosol humidity, providing a cooler and safer inhalation experience while allowing the use of more complex and efficient filtering technology, as it can be reused with multiple aerosol generating articles.
Implementation Method 1
The filter portion comprises a selective filter medium arranged to selectively filter water from the fluid. The water-absorbing medium helps remove more water from the fluid as it passes through the filter portion.
Implementation Method 2
The selective filter medium comprises a water-absorbing medium such as silica or molecular sieves
Data Source
AI summary
A filter for a vapour generating article includes a filter body having: a first end arranged as a mouthpiece; a second end opposite the first end arranged for attachment to a vapour generating article; the filter further including a cavity located within the filter body between the first and second ends, the cavity configured to allow a fluid including water to flow through the filter body from the second end to the first end; wherein the cavity includes a filter portion arranged to filter the fluid as it flows through the filter body; and wherein the filter portion is arranged to remove at least some of the water from the fluid as it flows through the filter body.