Non-Nicotine E-Vaping Section With Separate Liquid and Air Paths
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Solution Overview
Problem
Existing non-nicotine e-vaping devices face challenges in efficiently delivering non-nicotine pre-vapor formulations to the heating element while maintaining airflow control, leading to inconsistent vapor production and user experience.
Innovation Solution
The non-nicotine e-vaping section features a design with a larger cross-sectional flow area for channels compared to air passages, allowing for controlled airflow and efficient transport of non-nicotine pre-vapor formulations to the heater, which includes a wick and air vents to manage airflow direction and prevent obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the cross-sectional flow area of air passages is increased to improve airflow, then airflow is improved, but the ratio between channel flow area and air passage flow area is reduced, affecting formulation delivery efficiency
Solution Approach 1:
The patent applies parameter changes by precisely controlling the cross-sectional flow areas of channels and air passages. Specifically, the total cross-sectional flow area of channels is maintained at 0.75-1.25 mm² while air passages are limited to 0.1-0.2 mm², creating a ratio between 5:1 and 9:1. This parameter optimization ensures efficient formulation delivery to the heater while maintaining adequate airflow for vaporization.
2Quantity of substance
If the wick extends into the reservoir or channel to improve formulation absorption, then absorption is improved, but airflow obstruction occurs
Solution Approach 1:
The patent extracts the wick from the reservoir and channel spaces by designing the wick to be positioned only in the chamber, not extending into the reservoir or channels. This extraction eliminates the obstruction of airflow paths while the wick continues to perform its function of delivering formulation to the heater through the chamber interface.
3Ease of operation
If air vents are positioned to directly face the heater to improve airflow control, then airflow control is improved, but the chamber geometry becomes more complex
Solution Approach 1:
The patent segments the airflow control function by positioning air vents at specific locations on the chamber that directly face the heater. This segmentation allows independent optimization of airflow paths without requiring complex integrated geometries, as the vents and heater are positioned as separate functional elements with direct alignment.
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
This design ensures consistent vapor production and user-friendly operation by optimizing airflow and formulation delivery, enhancing the vaping experience.
Implementation Method 1
A non-nicotine e-vaping device uses a heater to at least partially volatilize a non-nicotine pre-vapor formulation to produce a non-nicotine vapor
Implementation Method 2
a wick in a chamber defined within the housing; a heater in heating proximity to the wick
Data Source
AI summary
The non-nicotine e-vaping section includes a heater in heating proximity to a wick, the heater and the wick being connected to a first surface of a first wall that partially defines a chamber, and a reservoir configured to contain a non-nicotine pre-vapor formulation, the non-nicotine pre-vapor formulation being devoid of nicotine and including a non-nicotine compound, the first wall at least partially defining at least one first channel that traverses through the first surface, the at least one first channel being configured to communicate the non-nicotine pre-vapor formulation from the reservoir to the wick, the first wall defining an entrenched section that at least partially contains the wick, the first wall at least partially defining one or more air passages that traverse through the first surface, the one or more air passages having a first length that is longer than a second length of the at least one first channel.