Segmented Tobacco Rod with Phase Change Material for Consistent Aerosol
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Solution Overview
Problem
Conventional electrically heated low-temperature cigarettes experience uneven smoke release due to depletion of aerosol over time, leading to uncontrollable smoke intensity and sensory differences throughout the smoking process.
Innovation Solution
A smoking system and article featuring a cigarette rod with sequentially connected tobacco segments and phase change material, heated by independently controlled heating elements, ensuring consistent smoke release by managing temperature distribution and preventing rapid temperature changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional electrically heated low-temperature cigarettes use integrated heating in a heating chamber, then aerosol production is optimized, but smoke release becomes uncontrollable and sensory characteristics weaken in the late stage
Solution Approach 1:
The cigarette rod is divided into multiple tobacco segments (first, second, third segments) with different tobacco materials. Each segment is heated by a corresponding heating element, allowing independent control of aerosol generation at different stages of smoking. This segmentation prevents aerosol depletion and maintains consistent sensory characteristics throughout the smoking process.
Solution Approach 2:
The system dynamically controls the heating temperature and aerosol generation amount for each tobacco segment based on the smoking stage. The controller adjusts heating parameters in real-time to maintain optimal aerosol concentration, preventing the depletion that occurs in integrated heating systems and ensuring consistent sensory experience.
2Object-affected harmful factors
If the total particulate matter is kept low during initial puffs, then health concerns are reduced, but smoke intensity becomes insufficient and increases uncontrollably over time
Solution Approach 1:
Different tobacco segments contain different tobacco materials with varying properties. The first tobacco segment uses material suitable for low particulate matter generation, while subsequent segments use materials optimized for maintaining smoke intensity. This local differentiation allows the system to control harmful factors at each stage while maintaining acceptable smoke intensity.
Solution Approach 2:
The system changes physical and chemical parameters of the tobacco materials across different segments. By selecting tobacco materials with different combustion characteristics and aerosol generation properties for each segment, the system maintains low total particulate matter while preventing uncontrollable smoke intensity increases.
3Device complexity
If a single heating chamber is used for integrated heating, then device complexity is reduced, but temperature control precision deteriorates leading to rapid temperature changes
Solution Approach 1:
The single integrated heating chamber is divided into multiple independent heating chambers, each containing a separate heating element. This allows independent temperature control for each tobacco segment, achieving precise temperature management without requiring a single complex integrated system. Each heating element can be controlled separately to maintain optimal temperature for its corresponding tobacco segment.
Solution Approach 2:
The heating elements are controlled dynamically based on the smoking stage and tobacco segment being heated. The controller adjusts heating power in real-time for each element, enabling precise temperature control that adapts to changing conditions during the smoking process, preventing rapid temperature changes that would occur in an integrated system.
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
The solution provides a uniform smoke release and improved sensory consistency by maintaining optimal aerosol production and flavor transfer, reducing tar and harmful constituents, and preventing thermal degradation.
Implementation Method 1
a phase change material disposed in the tobacco material
Implementation Method 2
Each of the heating elements is provided with a heating chamber. The plurality of heating elements independently control temperature and heat sequentially
Data Source
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AI summary
A tobacco product (200) comprising a mouthpiece (240) and a cigarette stem (220). One extremity of the cigarette stem (220) is connected to the mouthpiece (240). The cigarette stem (220) comprises multiple tobacco segments (242) connected in series. The tobacco segments (242) comprise a tobacco material (244) and a phase changing material (246). The phase changing material (246) is provided in the tobacco material (244).