Multi-Chamber Cartridge Actuator for Selective Aerosol Volume Control
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Solution Overview
Problem
Existing smoking articles do not allow consumers to selectively control an increased quantity of aerosol precursor composition for enhanced vapor/aerosol production, lacking the ability to deliver more than a normal quantity on demand.
Innovation Solution
A smoking article with a cartridge having multiple chambers in fluid communication with an aerosol forming arrangement, where an actuator selectively directs an increased quantity of aerosol precursor composition from one chamber to the aerosol forming arrangement, along with a backflow prevention mechanism using aligned discs to prevent excess from other chambers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a smoking article delivers a normal quantity of aerosol precursor composition per draw, then the device operates reliably with balanced delivery, but the consumer cannot achieve enhanced vapor production or increased nicotine content on demand
Solution Approach 1:
The reservoir is divided into multiple chambers (first chamber, second chamber, third chamber) that are separated by partition walls. Each chamber can independently store aerosol precursor composition, allowing selective delivery to the aerosol forming arrangement. This segmentation enables the consumer to choose which chamber's composition is delivered, providing enhanced adaptability while maintaining a manageable structural complexity through modular design.
Solution Approach 2:
The actuator mechanism dynamically changes the connectivity between chambers and the aerosol forming arrangement. By actuating the actuator, the system transitions from a state where all chambers deliver normal quantities to a state where one chamber delivers an increased quantity while others are isolated. This dynamic reconfiguration allows on-demand enhancement of vapor production without permanently increasing device complexity.
2Quantity of substance
If an actuator directs an increased quantity of aerosol precursor composition from one chamber, then enhanced vapor production is achieved, but backflow from other chambers may occur
Solution Approach 1:
The actuator mechanism is designed to preemptively prevent backflow by isolating chambers before the increased quantity delivery occurs. When the actuator is actuated, it closes off the pathways from non-selected chambers to the aerosol forming arrangement, preventing any potential backflow of aerosol precursor composition into other chambers. This preliminary protective action ensures reliable operation and maintains composition integrity across all chambers.
3Ease of operation
If multiple chambers are used to provide selective delivery, then consumer control over enhanced characteristics is enabled, but the device structure becomes more complex
Solution Approach 1:
The actuator serves multiple functions: it controls the isolation of individual chambers, regulates the flow paths, and enables both normal and enhanced delivery modes. This multi-functionality reduces the need for separate control mechanisms for each chamber, thereby maintaining ease of operation with a single actuator while achieving selective delivery control across multiple chambers.
Data Source
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Figure 3A
AI summary
A smoking article for on-demand delivery of an increased quantity of an aerosol precursor composition, a cartridge, and a method are disclosed. In some aspects, the cartridge (300) includes a housing, and a reservoir (316) disposed within the housing and defining two or more chambers (318A-C) each having an aerosol precursor composition therein. The reservoir is in fluid communication with an aerosol forming arrangement (308) configured to form an aerosol from any of the aerosol precursor compositions, with the respective aerosol precursor compositions of the two or more chambers being directed to the aerosol forming arrangement in substantially equal normal quantities. The cartridge further includes an actuator (328) configured to selectively and operably engage any one of the chambers and to direct an increased quantity of the aerosol precursor composition from the chamber engaged therewith to the aerosol forming arrangement, the increased quantity being greater than the normal quantity of the aerosol precursor compositions.