Reusable Ejection Head Structure for Vapor Cartridge Cost Reduction
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Solution Overview
Problem
Vapor generating devices, such as electronic cigarettes, face high costs due to the expensive ejection heads being replaced with each fluid supply cartridge, as the ejection heads are typically not reusable with multiple cartridges.
Innovation Solution
A two-piece supply item for vapor generating devices, comprising a reusable ejection head structure with a flexible circuit for electrical communication and a removable fluid reservoir body that can be attached multiple times, allowing the ejection head to be used with multiple fluid reservoirs, reducing the need for frequent replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ejection head is integrated with the fluid supply cartridge, then the cartridge can be easily replaced, but the expensive ejection head must be discarded with each replacement
Solution Approach 1:
The fluid supply cartridge is divided into two separable parts: the ejection head structure (containing the ejection head and flexible circuit) and the fluid reservoir body. This segmentation allows the expensive ejection head to be reused while only the cheaper fluid reservoir is discarded after fluid exhaustion.
Solution Approach 2:
The ejection head structure is extracted from the disposable cartridge and made reusable. The fluid reservoir body is taken out as a separate replaceable component, allowing the ejection head to be detached and reused with multiple fluid reservoirs.
2Loss of substance
If the ejection head is made reusable with multiple fluid reservoirs, then cost is reduced, but the connection interface must be highly reliable
Solution Approach 1:
The ejection head structure and fluid reservoir body are combined through a secure attachment interface that ensures reliable fluid flow and electrical connection. The interface integrates mechanical attachment with fluid sealing and electrical contact alignment.
Solution Approach 2:
The attachment interface is designed to be universal, allowing the same ejection head structure to work with multiple different fluid reservoir bodies. The interface handles multiple functions simultaneously: mechanical attachment, fluid sealing, and electrical connection alignment.
3Loss of substance
If the fluid reservoir body is made removable and replaceable, then the ejection head can be reused, but the attachment and detachment process becomes more complex
Solution Approach 1:
The cartridge is segmented into modular components with standardized interfaces. The attachment mechanism uses simple geometric features (protrusions, recesses, sealing surfaces) that enable easy connection and disconnection without complex operations.
Solution Approach 2:
The attachment interface has localized functional features at specific positions: sealing surfaces for fluid tightness, electrical contacts for power and signal, and mechanical features for alignment and attachment. Each local area is optimized for its specific function.
Data Source
AI summary
A fluid supply, can ridge fir a vapor generating device that includes an ejection head structure and a fluid reservoir body for removable attachment to the ejection head structure. The ejection head structure contains an ejection head and a flexible circuit attached to an ejection head structure for electrical communication with the ejection head. The fluid reservoir body includes a vaporizing fluid therein, a fluid supply port in fluid flow communication with the vaporizing fluid, and a fluid port seal for the fluid supply port.