Ferromagnetic Flow Control in Aerosol-Generating Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Aerosol-generating systems face issues with insufficient aerosol-forming substrate delivery during use and leakage of substrate when not in use, leading to undesirable components in the aerosol and potential user inhalation of unvapourized substrate.
Innovation Solution
An aerosol-generating system with a storage compartment, retention material, and an aerosol-forming substrate flow path containing a ferromagnetic body that moves between positions under electromagnetic control, restricting substrate flow when not in use to prevent leakage and ensuring sufficient substrate delivery when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a less porous (more retentive) retention material is used to prevent substrate leakage when not in use, then substrate leakage is reduced, but substrate delivery speed to the aerosol-generating element decreases
Solution Approach 1:
The patent employs a movable ferromagnetic body that can dynamically change position between a first position (restricting flow) and a second position (allowing flow). This dynamic mechanism allows the system to switch between leakage prevention mode and high-speed delivery mode, resolving the contradiction between retentiveness and delivery speed.
Solution Approach 2:
The ferromagnetic body acts as an intermediary flow control element between the storage compartment and retention material. By moving this intermediary component, the system can regulate substrate flow without changing the retention material's porosity, thus maintaining both leakage prevention and fast delivery capabilities.
2Productivity
If capillary material is used to transport substrate to the aerosol-generating element, then substrate transport is achieved, but substrate leakage occurs when the system is not in use
Solution Approach 1:
The patent segments the substrate flow path into distinct zones: a storage compartment, a flow restriction zone with the ferromagnetic body, and a retention material zone. This segmentation allows different functional requirements to be met in different segments - efficient transport in the retention zone and leakage prevention in the flow restriction zone.
Solution Approach 2:
The ferromagnetic body is positioned to preliminarily restrict substrate flow before it reaches the retention material when the system is not in use. This preliminary anti-action prevents substrate from entering the capillary retention material, thereby preventing leakage while maintaining transport capability when needed.
3Reliability
If the ferromagnetic body is positioned to fully restrict substrate flow to prevent leakage, then leakage is minimized, but substrate delivery to the aerosol-generating element is insufficient
Solution Approach 1:
The ferromagnetic body's position is dynamically adjustable between fully restricting flow (first position) and partially allowing flow (second position). This dynamic positioning enables the system to provide sufficient substrate during operation while preventing leakage during storage, resolving the contradiction between leakage prevention and substrate availability.
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 system effectively reduces substrate leakage when not in use, minimizes undesirable inhalation of unvapourized substrate, and ensures consistent aerosol production by optimizing substrate flow through the use of a ferromagnetic body and electromagnetic control.
Implementation Method 1
An electromagnet may be present in the aerosol-generating system. Application of power to the electromagnet may move the ferromagnetic body between a first position and a second position.
Implementation Method 2
A ferromagnetic body may be positioned in the flow path. Application of power to the electromagnet may move the ferromagnetic body between a first position and a second position.
Implementation Method 3
In the first position the ferromagnetic body may restrict flow of aerosol-forming substrate to the retention material to a greater degree than in the second position.
Implementation Method 4
The aerosol-forming substrate may be transported to the aerosol-generating element using a capillary material.
Data Source
AI summary
An aerosol-generating system is provided, including: a storage compartment containing an aerosol-forming substrate; a retention material configured to retain the substrate; an aerosol-generating element proximate to the retention material; an aerosol-forming substrate flow path defined between the compartment and the retention material, the flow path including first and second internal diameters, the second diameter being greater than the first; a ferromagnetic body positioned in the flow path; and an electromagnet configured to move the body between the first and the second positions upon an application of power to the electromagnet, in which in the first position the body restricts flow of the substrate to the retention material to a greater degree than in the second position, and in which in the first position the body is aligned with the first diameter and in the second position the body is aligned with the second diameter.