Aerosol Cartridge Diffuser for Ambient Stability
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Solution Overview
Problem
Aerosol-generating devices are influenced by ambient conditions, particularly temperature and humidity, leading to inconsistent aerosol generation.
Innovation Solution
A cartridge design with a diffuser and liquid storage portion that entrains liquid sensory media in air bubbles, using one-way valves to control airflow and minimize ambient air influence, allowing for consistent aerosol generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ambient air is drawn into the aerosol-generating device, then aerosol generation is enabled, but aerosol consistency is reduced due to ambient temperature and humidity variations
Solution Approach 1:
The patent introduces a controlled atmosphere within the cartridge by using a diffuser and liquid storage portion to create a stable internal environment. The liquid sensorial media and diffuser system effectively isolate the aerosol generation process from external ambient variations, creating an 'inert' environment regarding temperature and humidity fluctuations.
Solution Approach 2:
The diffuser acts as an intermediary component between the ambient air inlet and the heating element. It mediates the interaction by distributing air through liquid sensorial media, thereby filtering and stabilizing the air properties before it reaches the aerosolization zone, reducing the direct impact of ambient variations.
2Reliability
If a diffuser is added to entrain liquid sensorial media in air bubbles, then aerosol consistency is improved, but device complexity increases
Solution Approach 1:
The diffuser is implemented as a porous component that allows air to pass through while interacting with the liquid sensorial media. This porous structure enables bubble formation and liquid entrainment without requiring complex mechanical moving parts, achieving the desired function through material properties rather than mechanical complexity.
Solution Approach 2:
The system utilizes pneumatic principles where air flow through the diffuser creates bubbles that entrain liquid sensorial media. The hydraulic interaction between the air stream and liquid media occurs passively through the diffuser structure, eliminating the need for active pumping or complex control mechanisms.
3Reliability
If one-way valves are used to control airflow, then ambient air influence is minimized, but manufacturing precision requirements increase
Solution Approach 1:
The one-way valves are designed to function automatically based on pressure differentials without requiring external control or precise active management. The valves self-regulate airflow direction based on the natural pressure gradients created during inhalation, reducing the need for complex control systems and high-precision active components.
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 design ensures consistent aerosol generation by controlling airflow and media entrainment, enhancing user experience with modifiable flavors and nicotine content.
Implementation Method 1
The diffuser creates bubbles, when air enters into the cartridge via the air inlet
Implementation Method 2
the liquid sensorial media is entrained in the air bubbles
Data Source
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AI summary
The invention relates to a cartridge (10) for an aerosol-generating device. The cartridge comprises a downstream end comprising a fluid outlet (22) and an upstream end comprising an air inlet (16). The cartridge further comprises a liquid storage portion (12) arranged between the downstream end and the upstream end. The liquid storage portion comprises a liquid sensorial media (14). The cartridge further comprises a diffuser (20). The diffuser is arranged downstream of the air inlet. The invention further relates to a kit comprising at least two cartridges and to an aerosol-generating device.