Angled Lighting End Cigarette Reduces Aerosol Harmful Factors
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Solution Overview
Problem
Existing cigarettes do not effectively alter the composition of mainstream aerosol generated, leading to high levels of tar, nicotine, and carbon monoxide in smoke.
Innovation Solution
A smoking article with a lighting end configured at an angle relative to the longitudinal axis, incorporating a heat generation segment and an aerosol-generating region, which alters the chemical nature of the mainstream aerosol by reducing the exposure of smokable material to the flame, thereby reducing tar, nicotine, and carbon monoxide levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional cylindrical cigarette with perpendicular lighting end is used, then the structure is simple and easy to manufacture, but the mainstream aerosol contains high levels of tar, nicotine, and carbon monoxide
Solution Approach 1:
The patent applies asymmetry by configuring the lighting end at an angle relative to the longitudinal axis of the cigarette, creating an asymmetric geometry that alters flame contact with the smokable material. This asymmetric lighting end configuration reduces the surface area exposed to combustion, thereby reducing harmful aerosol constituents without requiring complex additional components.
Solution Approach 2:
The patent changes the geometric parameter of the lighting end from perpendicular to angled (e.g., 30-60 degrees relative to the longitudinal axis). This parameter change modifies the combustion characteristics and flame-material interaction, resulting in reduced tar, nicotine, and carbon monoxide levels in the generated aerosol.
2Object-affected harmful factors
If the lighting end is configured at an angle to reduce harmful aerosol constituents, then tar, nicotine, and carbon monoxide levels are reduced by at least 20%, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a range of angular configurations (e.g., 30-60 degrees) rather than requiring a single precise angle. This allows manufacturers to achieve the beneficial effect within a tolerance range, reducing the stringency of precision requirements while still obtaining at least 20% reduction in harmful constituents.
3Object-affected harmful factors
If chemical additives or mechanical attenuators are used to reduce aerosol constituents, then harmful factors are reduced, but the device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the need for chemical additives and mechanical attenuators by using solely the geometric configuration of the lighting end. The asymmetric angular design inherently reduces harmful constituents through modified combustion physics, removing the need for separate chemical or mechanical intervention components.
Solution Approach 2:
The lighting end configuration serves the dual function of both igniting the smokable material and simultaneously reducing harmful aerosol constituents through its geometric design. This self-service approach eliminates the need for separate attenuation mechanisms, as the lighting end itself performs the reduction function.
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 angled lighting end reduces tar, nicotine, and carbon monoxide levels by at least 20% on average over four puffs compared to traditional cigarettes, with some embodiments achieving a reduction of up to 30% without the need for chemical additives or mechanical attenuators.
Implementation Method 1
lighting one end thereof and burning the tobacco rod
Data Source
Figure 1~4
Figure 5~8
Figure 9~12
AI summary
The lighting end (18) or tip of the smoking article (10) is configured in such a manner that the entire front or upstream face thereof does not lie in a plane that is generally perpendicular to the longitudinal axis (40) of the smoking article. For example, at least a portion of the front face of the smoking article lies in a plane (e.g., a generally flat plane) that is positioned about 40- to about 50- relative to the longitudinal axis of that smoking article. As such, the overall nature or character of the mainstream aerosol generated by a smoking article can be altered. This shape may include an ellipse, or may include a first section in a plane not perpendicular to the longitudinal axis and a second section in a plane perpendicular to the longitudinal axis. Alternatively, the face of the lighting end may have a shape such that its surface area is greater than the cross-sectional area of the smoking article.