Low-Oxygen Aerosol Heating for Higher-Temperature Tobacco Vaporization
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Solution Overview
Problem
Existing aerosol generating apparatuses, particularly heat-not-burn systems, face limitations in heating temperature due to oxygen presence, leading to potential combustion of tobacco consumables, increased toxicity, and undesirable taste/smell.
Innovation Solution
An aerosol generating apparatus with a gas supply device that removes oxygen from air using a separator, providing a low or oxygen-free environment in the cavity to allow higher heating temperatures without combustion, utilizing techniques like pressure swing adsorption or membrane gas separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cartridge-type consumable container is used, then portability and ease of use are improved, but the container size becomes large relative to the liquid amount, reducing liquid storage capacity
Solution Approach 1:
The consumable container is divided into two separate parts: a reservoir container for storing the liquid and a cartridge unit for holding the liquid delivery component. This segmentation allows the reservoir to be optimized for storage capacity while the cartridge remains compact for portability, resolving the contradiction between container size and liquid storage capacity.
Solution Approach 2:
The reservoir container is designed with an expandable collapsible wall that can change volume in three-dimensional space. This allows the container to expand when filled with liquid and collapse as liquid is consumed, maximizing storage capacity without requiring a permanently large container structure, thus resolving the size-capacity contradiction.
2Weight of moving object
If the container wall is made thin to reduce size, then portability is improved, but liquid leakage due to deformation becomes more likely
Solution Approach 1:
The container wall is designed as an expandable collapsible structure that dynamically changes its shape and volume. The wall can expand when filled and collapse during dispensing, maintaining structural integrity throughout the process. This dynamic design prevents deformation-induced leakage while keeping the wall thin for portability.
Solution Approach 2:
The container incorporates a support structure and sealing mechanism that preemptively counteracts potential deformation and leakage. The sealing portion is designed to maintain reliable sealing even when the container wall deforms during expansion and collapse, preventing liquid leakage before it can occur.
3Quantity of substance
If the container is made collapsible to maximize liquid storage density, then storage capacity is improved, but the container becomes difficult to handle and may deform
Solution Approach 1:
By separating the reservoir container from the cartridge unit, the collapsible reservoir can be optimized for storage density without compromising the handleability of the overall system. The cartridge unit provides a stable, non-collapsible component that serves as a reliable handle and control interface, resolving the contradiction between collapsibility and handleability.
Solution Approach 2:
The expandable collapsible wall is designed to change shape in a controlled manner during liquid dispensing. The dynamic collapse is managed through the connection structure between the reservoir and cartridge, ensuring the container remains manageable and does not deform excessively, thus maintaining ease of operation while maximizing storage density.
4Quantity of substance
If a separate reservoir container is introduced to increase liquid capacity, then liquid storage capacity is improved, but device complexity increases
Solution Approach 1:
The reservoir container and cartridge unit are designed to connect through a simple connection structure that integrates the two components into a unified system. The sealing portion and connection mechanism are designed to be straightforward, reducing the complexity increase that would result from having separate reservoir and cartridge components, thus resolving the contradiction between increased capacity and device complexity.
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
Enables efficient aerosol generation with finer particle dispersion, reduced toxicity, and improved nicotine delivery by heating at higher temperatures while minimizing combustion risks.
Implementation Method 1
a heating unit that heats the liquid in the liquid supply container
Implementation Method 2
an ultrasonic vibration unit that vibrates at a ultrasonic frequency
Data Source
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AI summary
An aerosol generating apparatus (100, 300, 400) is disclosed, the apparatus comprising: a cavity (102, 302, 408) configured to receive an aerosol forming consumable; a heater (106, 306, 414) configured to heat but not burn an aerosol forming consumable (104, 304, 410) received in the cavity, thereby to generate an aerosol; and a gas supply device (108, 308, 404) comprising a separator, the gas supply device configured to remove oxygen from air by use of the separator so as to produce a gas having a reduced concentration of oxygen, relative to air, and to supply the gas to the cavity.