Separate Return Pathway for Accurate Aerosol Device Refilling
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Solution Overview
Problem
Refilling electronic aerosol provision systems, such as e-cigarettes, with the right amount of aerosol-generating material is difficult and often leads to material wastage or under-filling.
Innovation Solution
A system with a refill pathway and a separate return pathway between the refilling device and the aerosol-generating material storage portion, allowing excess material to be returned when the storage reaches a predetermined amount, ensuring accurate filling without overfilling or underfilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a refilling device is used to transfer aerosol-generating material to the storage portion, then the reservoir can be refilled multiple times reducing disposal needs, but it is difficult to ensure the right amount of material is provided leading to overfilling or underfilling
Solution Approach 1:
The system employs a feedback mechanism where a return pathway allows excess aerosol-generating material to flow back from the storage portion to the refilling device. This automatic feedback loop ensures that the storage portion receives precisely the required amount of material, preventing both overfilling and underfilling without requiring complex manual control mechanisms.
Solution Approach 2:
The refilling system is designed to be self-regulating through the return pathway mechanism. When the storage portion reaches its maximum capacity, excess material automatically returns to the refilling device through the return pathway, eliminating the need for external monitoring or control systems and enabling precise refilling through self-service operation.
2Loss of substance
If material is transferred to the reservoir without a return pathway, then the refilling process is simpler, but material wastage occurs due to overfilling and leakage
Solution Approach 1:
The return pathway creates a feedback loop that automatically redirects excess aerosol-generating material from the storage portion back to the refilling device. This prevents material wastage by ensuring that only the precise amount needed remains in the storage portion, while eliminating the need for complex manual measurement or control systems.
Solution Approach 2:
The system implements a recover mechanism where excess aerosol-generating material that would otherwise be wasted through overfilling or leakage is automatically recovered via the return pathway and redirected back to the refilling device for potential reuse or proper disposal, thereby minimizing material loss.
3Manufacturing precision
If the refill pathway and return pathway are combined into a single pathway, then the device structure is simpler, but the ability to regulate material amount accurately is lost
Solution Approach 1:
The fluid pathway system is segmented into two distinct pathways: a refill pathway for transferring aerosol-generating material from the refilling device to the storage portion, and a separate return pathway for returning excess material. This segmentation enables precise regulation of filling amounts by allowing independent control of material input and excess material removal, achieving manufacturing precision without requiring overly complex integrated systems.
Solution Approach 2:
The return pathway acts as an intermediary mechanism that mediates between the storage portion and the refilling device. It provides a dedicated route for excess material to return, enabling precise filling control by separating the functions of material transfer and material regulation into distinct pathways, thereby achieving accurate filling precision while maintaining reasonable structural complexity.
Data Source
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AI summary
Described is a system including: an aerosol provision device comprising an aerosol-generating material storage portion for storing an aerosol-generating material, the aerosol provision device arranged to aerosolise aerosol-generating material stored in the aerosol-generating material storage portion; a refilling device comprising a transfer mechanism for transferring aerosol-generating material from the refilling device to the aerosol-generating material storage portion when the aerosol provision device is coupled to the refilling device; a refill pathway extending between the refilling device and the aerosol-generating material storage portion when the aerosol provision device is coupled to the refilling device, wherein the transfer mechanism is configured to enable the transfer of aerosol-generating material to the aerosol-generating material storage portion of the aerosol provision device; and a return pathway extending between the aerosol-generating material storage portion and the refilling device when the aerosol provision device is coupled to the refilling device, the return pathway separate from the refill pathway. The return pathway is configured to enable aerosol-generating material provided to the aerosol-generating material storage portion to pass back to the refilling device when the amount of aerosol-generating material in the aerosol-generating material storage portion exceeds a predetermined amount. Also described is an aerosol provision device, a refilling device, and a method of filling.