Cigarette Filter Sucrose Cooling Aerosol Transfer
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Solution Overview
Problem
Conventional cigarettes face challenges in achieving optimal aerosol cooling and transfer due to the limitations of existing filter materials, where high filtering performance reduces aerosol transfer and low filtering performance fails to filter certain components effectively.
Innovation Solution
Incorporating sucrose as a cooling material in a cigarette's filter rod, which absorbs heat and moisture to effectively cool and enhance aerosol production by reaching its melting point and absorbing surrounding heat and moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filtering performance of the filter is increased, then certain components in the aerosol are filtered more effectively, but the amount of aerosol transfer decreases
Solution Approach 1:
The filter rod is divided into multiple filter elements with different filtering characteristics. Some filter elements use materials with high filtering performance to remove harmful components, while other filter elements use materials with lower filtering resistance to maintain aerosol transfer. This segmentation allows the system to achieve both effective filtering and sufficient aerosol delivery simultaneously.
2Quantity of substance
If the filtering performance of the filter is decreased, then aerosol transfer increases, but certain components in the aerosol are not filtered effectively
Solution Approach 1:
Different regions of the filter rod are assigned different filtering qualities. The filter elements are constructed with varying material compositions and structures - some regions use materials optimized for high filtration of specific harmful components, while other regions use materials optimized for low resistance to maintain aerosol flow. This local differentiation allows each part of the filter to perform its specific function optimally.
3Temperature
If conventional filter materials are used, then filtering function is provided, but aerosol cooling efficiency is insufficient
Solution Approach 1:
The filter elements are designed to perform multiple functions simultaneously. Each filter element not only filters harmful components from the aerosol but also contributes to cooling the heated aerosol. The filter materials are selected and structured to provide both filtration and thermal management functions, eliminating the need for separate cooling components and maintaining filtering effectiveness while adding the cooling capability.
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 use of sucrose in the filter rod effectively cools heated aerosols and increases aerosol volume by adding absorbed moisture, addressing the limitations of existing filter materials in aerosol generation.
Implementation Method 1
the temperature of the sucrose reaches the melting point thereof or higher, and phase change of sucrose occurs. In this operation, sucrose may absorb the surrounding heat, thereby cooling the heated aerosol
Implementation Method 2
the temperature of the sucrose reaches the melting point thereof or higher, and phase change of sucrose occurs
Implementation Method 3
since sucrose has the characteristic of absorbing the surrounding moisture, an amount of aerosol may be increased by adding moisture absorbed by the sucrose to the aerosol passing through the cooling portion
Data Source
Figure 1
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AI summary
A cigarette includes a tobacco rod and a filter rod connected to a downstream end portion of the tobacco rod. A portion of the filter rod includes a cooling portion, and the cooling portion includes sucrose as a cooling material.