Smoking Substitute Consumable With Phase-Change Aerosol Cooling
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Solution Overview
Problem
Existing heat-not-burn (HNB) consumables do not adequately enhance the user experience and improve the function of smoking substitute systems, particularly in terms of aerosol quality and user satisfaction.
Innovation Solution
Incorporation of a phase change material, such as paraffin-based solid-liquid phase change material, within a cooling element to transfer heat from vapor to the phase change material, facilitating vapor cooling and condensation into an aerosol, while maintaining a consistent temperature differential for efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional combustible smoking articles are used, then the user experiences the traditional smoking ritual, but harmful substances are generated through burning and combustion
Solution Approach 1:
The patent changes the fundamental parameter of the heating process from combustion (high temperature burning) to controlled heating (lower temperature vaporization). This parameter change eliminates the formation of harmful combustion byproducts while preserving the delivery of nicotine and flavor compounds to the user, thus resolving the contradiction between reducing harmful substances and maintaining user satisfaction
Solution Approach 2:
The patent utilizes phase transitions by heating tobacco material to vaporize moisture and volatile compounds without combustion. The vapor then condenses in the cooling element to form an aerosol. This phase change mechanism allows delivery of active compounds without the harmful effects of burning, addressing the contradiction between harmful substance reduction and user experience
2Object-affected harmful factors
If heat-not-burn approach is used to reduce harmful compounds, then fewer harmful substances are produced, but aerosol quality and user experience are not adequately enhanced
Solution Approach 1:
The patent divides the consumable into distinct functional segments: a heating zone for vaporization and a separate cooling element downstream for condensation. This segmentation allows optimization of each zone's function - the heating zone produces vapor efficiently while the cooling element enhances aerosol formation and delivery, thereby improving user experience without compromising the low-harm advantage
Solution Approach 2:
The cooling element acts as an intermediary component between the heating zone and the user's mouth. It receives hot vapor, cools and condenses it into aerosol, and delivers the cooled aerosol to the user. This intermediary function enhances aerosol quality and user experience while maintaining the benefit of reduced harmful compounds from the heat-not-burn approach
3Object-affected harmful factors
If tobacco is heated to release vapour without combustion, then harmful compounds are reduced, but the aerosol may not be in a desirable state for inhalation
Solution Approach 1:
The cooling element serves as a thermal intermediary, accepting hot vapor from the heating zone and transferring heat to its surrounding structure (which may include phase change materials). This intermediary cooling process brings the vapor temperature down to a desirable state for inhalation while preserving the low-harm characteristics of the heat-not-burn method
Solution Approach 2:
The patent employs thermal contraction in reverse - as the vapor passes through the cooling element, heat transfer causes thermal contraction of the vapor molecules, condensing them into aerosol form at a lower temperature. This thermal process adjusts the temperature from the heating zone to a inhalation-appropriate level, resolving the contradiction between harmful compound reduction and aerosol temperature control
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
Enhances aerosol cooling and condensation, improving the quality and user experience of HNB consumables by reducing harmful compounds and providing a more satisfying inhalation experience.
Implementation Method 1
a phase change material, such as paraffin-based solid-liquid phase change material, within a cooling element to transfer heat from vapor to the phase change material, facilitating vapor cooling and condensation into an aerosol
Implementation Method 2
transfer heat from vapor to the phase change material
Implementation Method 3
facilitating vapor cooling and condensation into an aerosol
Data Source
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AI summary
The present disclosure provides an aerosol-forming article comprising a cooling element comprising a phase change material.