Resistive Heating Element Segmentation in Aerosol-Generating Articles
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Solution Overview
Problem
Existing electrically heated aerosol-generating systems face issues with heater contamination and difficulty in removing the smoking article from the device, often requiring dedicated tools and potentially leading to device disposal due to uncontrollable contamination.
Innovation Solution
Incorporating a resistive heating element within the aerosol-generating article, such as a tobacco plug, with electrical contacts for energy supply, allowing for easier cleaning and removal without damaging the device, and using a reusable or disposable heating element design depending on material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the heating element is fixed within the aerosol-generating device, then the device can be reused, but the heating element becomes contaminated with material from the aerosol-forming substrate during use
Solution Approach 1:
The heating element is segmented from the device by making it an integral part of the removable aerosol-generating article rather than a fixed component. This allows the heating element to be easily separated from the device along with the article, preventing contamination buildup on device components.
Solution Approach 2:
The heating element is extracted from the device structure and relocated to the aerosol-generating article. This extraction eliminates the contamination problem by removing the source of tobacco material deposition from the device interior, while the heating function remains intact.
2Device complexity
If the heating element is fixed within the aerosol-generating device, then the device structure is complete, but removal of the smoking article from the device becomes difficult
Solution Approach 1:
The heating element is segmented into the removable article assembly, creating a clear separation between the device and article components. This segmentation enables easy removal of the entire article without requiring specialized extraction tools or risking damage to fixed device components.
Solution Approach 2:
The heating element is merged with the aerosol-generating article as an integral component. This merging ensures that when the article is removed from the device, the heating element is removed together, simplifying the removal process and eliminating the need for dedicated extraction tools.
3Ease of repair
If the heating element is integrated into the aerosol-generating article, then cleaning becomes easier, but the article structure becomes more complex
Solution Approach 1:
The heating element is extracted from the device and placed into the article structure. This extraction makes the heating element accessible for cleaning or replacement as part of the removable article, eliminating the need to disassemble device components for cleaning purposes.
Solution Approach 2:
The article structure is designed to accommodate the heating element in a self-contained manner, allowing the user to easily remove and replace the entire article assembly without requiring separate cleaning operations or device disassembly. The integrated design makes maintenance simple through article replacement.
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 solution prevents heater contamination and simplifies the removal process, extending the lifespan of the aerosol-generating device and reducing waste, while allowing for cost-effective production of reusable heating elements.
Implementation Method 1
a resistive heating element positioned within the tobacco plug. The resistive heating element comprises an upstream portion protruding from an upstream end of the tobacco plug
Data Source
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AI summary
There is provided an aerosol-generating article (10) comprising a tobacco plug (12), a mouthpiece (18) positioned downstream of the tobacco plug (12), and a resistive heating element (22) positioned within the tobacco plug (12). The resistive heating element (22) comprises an upstream portion protruding from an upstream end of the tobacco plug (12), wherein the upstream portion of the resistive heating element (22) comprises at least two heater electrical contacts (30) for receiving a supply of electrical energy from at least two device electrical contacts when the aerosol-generating article (10) comprising the resistive heating element (22) is inserted into an aerosol-generating device (50).