Multi-Layer Septum for Aerosol Refill Precision
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Solution Overview
Problem
Existing electronic aerosol provision systems face challenges in convenient and safe refilling of aerosol-generating material, particularly due to difficulties in aligning refill bottles with cartridges, leading to wastage and potential skin poisoning from nicotine-based liquids.
Innovation Solution
A refilling device and system that includes a septum with multiple layers, where a harder outer layer and a softer inner layer facilitate easy piercing for refilling, ensuring accurate transfer of aerosol-generating material without leakage or skin contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-layer septum is used for refilling, then the structure is simple, but the piercing accuracy and material transfer precision are poor leading to spillage
Solution Approach 1:
The septum is divided into multiple layers (first layer and second layer) with different material properties. The first layer provides structural support while the second layer enables controlled piercing and material transfer, thereby improving piercing accuracy and reducing spillage without excessive complexity
Solution Approach 2:
The septum utilizes composite material construction with at least two different materials having distinct properties. This composite structure allows one layer to provide mechanical strength while another layer facilitates precise piercing and controlled fluid transfer, resolving the contradiction between precision and complexity
2Manufacturing precision
If manual refilling is performed by squeezing or dripping material, then the device complexity is low, but the alignment accuracy between bottle and article is poor causing spillage and waste
Solution Approach 1:
The refilling system enables the article to refill itself automatically through the multi-layer septum mechanism. The piercing element automatically pierces the septum and material flows through the controlled pathway without requiring manual alignment or squeezing, improving precision while keeping the refilling operation simple
Solution Approach 2:
The multi-layer septum acts as an intermediary component between the refill bottle and the article storage area. It provides a controlled interface that guides material transfer automatically, eliminating the need for precise manual alignment between components
3Object-affected harmful factors
If refilling material is handled manually, then the operation is simple, but the risk of harmful contact with skin is high due to nicotine content
Solution Approach 1:
The sealed multi-layer septum structure serves as an intermediary barrier that enables material transfer without direct human contact. The piercing and transfer process occurs through the sealed interface, eliminating skin exposure risk while maintaining automated refilling operation
Solution Approach 2:
The refilling operation is extracted from manual handling and integrated into the automated device system. The material remains contained within the sealed system throughout the transfer process, removing the hazardous manual handling step entirely
4Strength
If a harder septum material is used, then the structural integrity is improved, but the ease of piercing is reduced
Solution Approach 1:
The septum is segmented into multiple layers with different hardness properties. The first layer can be harder to maintain structural integrity, while the second layer is softer to facilitate easy piercing, thereby resolving the contradiction between strength and ease of piercing
Solution Approach 2:
The septum uses composite materials with different mechanical properties in each layer. This allows the outer layer to provide structural strength while the inner layer provides piercing ease, simultaneously achieving both requirements
Data Source
AI summary
An article for storing aerosol-generating material and configured to be refilled with aerosol-generating material from a refilling device, the article including a storage area for storing the aerosol-generating material; a valve arrangement in communication with the storage area, the valve arrangement including a septum arranged to cover an opening of the article in communication with the storage area, the septum including a first layer and a second layer, wherein the first layer is formed of a material that is relatively harder than a material forming the second layer. Also described is a refill reservoir having a valve arrangement including a septum, as well as a system and a method.