Aerosol Device Venting Channel for Pressure and Sealing
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Solution Overview
Problem
Aerosol-generating devices face challenges in sealing and managing excess gas pressure, leading to potential ingress of liquids and contaminations.
Innovation Solution
The integration of a venting channel with directional changes and an embedded electrical conductor within the device's housing, which also serves as a closing member, enhances sealing and pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed housing is used to prevent ingress of liquids and contaminations, then sealing is improved, but excess gas pressure builds up inside the housing
Solution Approach 1:
The housing is segmented into sealed compartments separated by partition walls, with selective venting channels in specific segments. This allows the housing to maintain sealing in most areas while providing controlled pressure relief through designated venting paths, resolving the contradiction between sealing and pressure management.
Solution Approach 2:
Venting channels act as intermediary structures that connect the sealed housing interior to the exterior environment. These channels serve as controlled intermediaries that allow pressure equalization while the overall housing remains sealed, preventing both complete sealing and complete venting extremes.
2Stress or pressure
If a venting channel is added to manage gas pressure, then pressure management is improved, but the housing structure becomes more complex
Solution Approach 1:
The venting channel is merged with the housing structure itself rather than being a separate component. The venting channel is formed as an integral part of the housing walls and partitions, combining the sealing function and venting function into a single integrated structure, thereby reducing overall device complexity.
Solution Approach 2:
The housing structure serves multiple functions simultaneously: it provides sealing, structural support, and integrated venting pathways. The partition walls and housing walls dual-purpose as both seal barriers and venting channel boundaries, reducing the need for additional separate components.
3Ease of manufacture
If the housing is formed as a unitary piece, then manufacturing is simplified and assembly time is reduced, but designing integrated venting channels and electrical conductors becomes more difficult
Solution Approach 1:
The venting channels and electrical conductor pathways are designed and positioned during the initial mold design phase rather than as afterthoughts. This preliminary planning allows the complex integrated features to be incorporated into the unitary housing structure during molding, avoiding later assembly steps and reducing overall design complexity.
Solution Approach 2:
The housing material is selected with properties suitable for complex integrated molding, and the mold design parameters are optimized to accommodate multi-functional features. By adjusting molding parameters and material selection, the complex integrated structure is manufactured as a unitary piece, simplifying assembly while managing design complexity through proper parameter optimization.
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 configuration reduces the ingress of liquids and contaminations while efficiently managing gas pressure, leading to improved device performance and reduced manufacturing costs.
Implementation Method 1
the venting channel enables to compensate for pressure differences inside the aerosol-generating device with respect to ambient pressure
Implementation Method 2
The directional change in the venting channel may reduce the ingress of liquids, in particular water, or contaminations into the device
Implementation Method 3
an electrical conductor is embedded in the housing part and extends through the housing part
Implementation Method 4
The aerosol-generating device may further comprise a heating chamber. The aerosol-generating device may further comprise a heating element
Implementation Method 5
an aerosol-generating device... for use with the aerosol-generating device... An aerosol-generating article may be inserted in the heating chamber
Data Source
AI summary
An aerosol-generating device is provided, including: a housing including a housing part, in which a venting channel extends from a housing part outer opening to a housing part inner opening, and in which the venting channel extends in at least two different directions inside the housing part along an extension thereof from the housing part outer opening to the housing part inner opening. A method of manufacturing the aerosol-generating device is also provided. An aerosol-generating system including the aerosol-generating device and an aerosol-generating article is also provided.