Vaping Reservoir Membrane Assembly for Leak and Pressure Control
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Solution Overview
Problem
Existing nicotine e-vaping devices face challenges in efficiently containing and vaporizing nicotine pre-vapor formulations, particularly during transportation and use, due to pressure differentials that can lead to leakage and inconsistent vapor production.
Innovation Solution
A reservoir assembly with a liquid-impermeable and air-permeable membrane, a plunger mechanism, and a wick system that maintains pressure equilibrium and facilitates controlled vaporization of nicotine pre-vapor formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional open reservoir is used to hold nicotine pre-vapor formulation, then the device structure is simple, but pressure differentials during transportation cause leakage and inconsistent vapor production
Solution Approach 1:
The patent employs a flexible diaphragm membrane that can deform to equalize pressure differentials between the interior and exterior of the reservoir. This thin film acts as a pressure-balancing element that prevents leakage while maintaining a relatively simple reservoir structure. The membrane's ability to flex and respond to pressure changes resolves the contradiction between containment reliability and structural simplicity.
Solution Approach 2:
The wick serves as an intermediary element between the nicotine pre-vapor formulation and the heating element. It controls the transfer of the formulation from the reservoir to the vaporization zone, ensuring consistent supply regardless of pressure variations during transportation. This intermediary mechanism enhances containment reliability without significantly complicating the overall reservoir structure.
2Reliability
If a membrane is added to cover the reservoir opening to prevent leakage, then containment reliability improves, but the device complexity increases
Solution Approach 1:
The flexible diaphragm membrane is integrated into the reservoir assembly to cover the opening while maintaining simplicity. Its flexibility allows it to conform to pressure changes without requiring complex support structures or sealing mechanisms. This approach achieves effective leakage prevention while minimizing the increase in device complexity.
3Reliability
If a plunger mechanism is implemented to maintain pressure equilibrium, then vapor production consistency improves, but the device complexity increases
Solution Approach 1:
The plunger mechanism is designed to automatically respond to pressure differentials without requiring external control systems. When pressure changes occur during transportation or use, the plunger moves passively to equalize pressure, maintaining consistent vapor production. This self-regulating mechanism achieves reliability improvement while keeping the pressure control system relatively simple.
Solution Approach 2:
The plunger acts as an intermediary between the nicotine pre-vapor formulation and the external environment, mediating pressure changes to maintain equilibrium. This intermediary function ensures consistent formulation delivery to the heating element while avoiding the need for complex active pressure control systems.
4Productivity
If a wick system is used to draw nicotine pre-vapor formulation to the heating element, then vaporization efficiency improves, but the risk of leakage and inconsistent supply increases
Solution Approach 1:
The wick serves as a controlled intermediary that regulates the flow of nicotine pre-vapor formulation from the reservoir to the heating element. Its capillary action provides a steady, controlled supply that prevents both leakage and inconsistent vaporization, resolving the reliability issue while maintaining high vaporization efficiency.
Solution Approach 2:
The wick utilizes porous material properties to control formulation transport through capillary forces. This porous structure ensures reliable, consistent supply to the heating element while preventing uncontrolled leakage, thereby improving both vaporization efficiency and formulation supply reliability.
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 solution ensures reliable containment of nicotine pre-vapor formulations during transportation and consistent vapor production, reducing leakage risks and enhancing user experience.
Implementation Method 1
The wick extends from an interior of the reservoir to an exterior of the reservoir, the wick configured to draw the nicotine pre-vapor formulation held in the reservoir to the exterior of the reservoir
Implementation Method 2
The first membrane covers the first opening. The first membrane includes one or more layers of a fabric that is liquid impermeable and air permeable
Implementation Method 3
The plunger is configured to move in the first direction within the interior of the outer shell based on a first force applied on the first surface of the plunger by a volume of nicotine pre-vapor formulation contained in the liquid containment area
Data Source
AI summary
A reservoir assembly for a nicotine e-vaping device includes an outer shell, a wick, and a membrane. The outer shell includes a first opening, an inner surface of the outer shell at least partially defining a reservoir configured to hold a nicotine pre-vapor formulation. The wick extends from an interior of the reservoir to an exterior of the reservoir. The wick is configured to draw the nicotine pre-vapor formulation held in the reservoir to the exterior of the reservoir. The first membrane covers the first opening. The first membrane is one or more layers of a fabric that is liquid impermeable and air permeable.