Electronic Vaping Cartridge Structure for Capillary Delivery
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Solution Overview
Problem
Existing electronic vaping devices face challenges in efficiently delivering pre-vapor formulations to vaporizers, particularly in terms of design and material compatibility, which can affect vaporization efficiency and user experience.
Innovation Solution
A cartridge design featuring a housing with a sidewall and an inner tube, a reservoir for pre-vapor formulation, and a wick structure using materials like cellulosic materials or glass fibers to facilitate efficient vaporization, combined with a power supply section including a heater and battery for controlled vapor delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wick structure using materials like cellulosic materials or glass fibers is used, then vaporization efficiency is improved, but device complexity increases
Solution Approach 1:
The wick is constructed from porous materials (cellulosic materials or glass fibers) that enable efficient capillary action to transport pre-vapor formulation to the heating element. This porous structure increases surface area for vaporization while maintaining material compatibility, thereby improving vaporization efficiency without requiring complex additional components.
Solution Approach 2:
The wick utilizes composite material properties by combining cellulosic materials or glass fibers with appropriate binders or treatments to optimize both capillary action and thermal stability. This composite approach enhances vaporization efficiency through improved material compatibility and controlled formulation delivery.
2Manufacturing precision
If a cartridge design with reservoir and wick structure is used, then controlled delivery of pre-vapor formulations is improved, but manufacturing complexity increases
Solution Approach 1:
The cartridge is segmented into distinct functional components: a reservoir for containing pre-vapor formulation, a wick structure for controlled transport, and a heating assembly. This segmentation allows each component to be optimized and manufactured separately with precise tolerances, then assembled together, improving controlled delivery while managing manufacturing complexity through modular production.
Solution Approach 2:
Different regions of the cartridge are designed with locally optimized properties: the reservoir uses materials and geometries optimized for formulation storage and controlled release, the wick uses materials optimized for capillary action and thermal stability, and the heating zone uses materials optimized for heat transfer. This local quality approach ensures precise controlled delivery while allowing each region to be manufactured using appropriate techniques.
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 design enhances vaporization efficiency and user experience by ensuring consistent and controlled delivery of pre-vapor formulations, allowing for precise heating and vapor production.
Implementation Method 1
The cartridge also includes a wick. The wick includes a first end, a second end, and a central portion. The first end and the second end extend through first orifice and the second orifice. The first end and the second end are configured to contact pre-vapor formulation contained in the reservoir.
Implementation Method 2
An electronic vaping device includes a heater element, which vaporizes a pre-vapor formulation to produce a vapor.
Data Source
AI summary
A cartridge of an electronic vaping device includes a housing extending in a longitudinal direction. The housing includes a sidewall, a transverse wall at the first end of the sidewall, and an inner tube integrally formed with the housing. The sidewall is generally cylindrical and a first end and a second end. The transverse wall includes at least one outlet therein. The inner tube extends in the longitudinal direction. The inner tube is concentrically positioned with respect to the sidewall. The inner tube communicates with the at least one outlet. The cartridge also includes a reservoir between the sidewall and the inner tube. The reservoir is configured to contain a pre-vapor formulation.