Activated Carbon Smoke Filter for Compact Sidestream Removal
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Solution Overview
Problem
Existing sidestream smoke removing devices lack an effective filter capable of efficiently removing sidestream smoke while maintaining a suitable flow rate and compact size.
Innovation Solution
A sidestream smoke removing device incorporating a pressed activated carbon filter with a vertical cross-sectional area ranging from 100 mm² to 2,500 mm², featuring circular or quadrangular holes with a thickness of 4 mm to 25 mm, and a ventilation fan operating at a flow rate of 0.8 L/min to 20 L/min, allowing for superior sidestream smoke removal and deodorization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a filter with large cross-sectional area is used to remove more sidestream smoke, then the sidestream smoke removal performance is improved, but the device size increases
Solution Approach 1:
The patent employs pressed activated carbon with controlled porosity and hole structures (4mm to 25mm thickness, circular or quadrangular holes) to maximize the filtering surface area within a compact form factor. The porous structure allows numerous holes to be arranged densely, increasing the effective filtering area without proportionally increasing the device's external dimensions.
Solution Approach 2:
The filter is designed with optimized three-dimensional geometry, using a vertical cross-sectional area between 100 mm² and 2,500 mm² and thickness of 4mm to 25mm. This dimensional optimization allows the filter to achieve high smoke removal capacity in a compact space by efficiently utilizing the available volume through strategic hole distribution across multiple dimensions.
2Productivity
If the filter thickness is increased to improve deodorizing performance, then the sidestream smoke removal efficiency is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent specifies precise parameter ranges for the filter: thickness of 4mm to 25mm, vertical cross-sectional area of 100 mm² to 2,500 mm², and hole dimensions optimized for maximum deodorizing performance. These parameter optimizations balance the competing requirements of effective smoke removal and manageable device complexity, ensuring the filter can be manufactured with standard processes while achieving superior performance.
3Speed
If the flow rate is increased to maintain suitable airflow through the filter, then the ventilation performance is improved, but the sidestream smoke removal efficiency decreases
Solution Approach 1:
The pressed activated carbon filter incorporates a controlled network of holes (circular or quadrangular cross-sections) that creates optimal flow resistance. This porous structure allows the filter to maintain effective sidestream smoke removal by providing sufficient contact time between smoke and filtering material, while still permitting adequate airflow at velocities of 0.8 L/min to 20 L/min through the strategically designed hole distribution.
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 device achieves enhanced sidestream smoke removal and deodorization performance with a suitable flow rate, maintaining a compact size by optimizing the filter's cross-sectional area, hole size, and thickness, while allowing for easy replacement or washing of the filter.
Implementation Method 1
a filter unit, wherein the filter unit comprises pressed activated carbon having a plurality of holes B through which sidestream smoke may pass
Data Source
Figure 1
AI summary
A sidestream smoke removing device includes a housing having a smoking space defined therein, an article inserting part positioned on one end of the housing and having an open area through which a smoking article is inserted into the smoking space, and a sidestream smoke processing part positioned at a distance from an upstream end of the smoking article inserted into the smoking space and configured to process sidestream smoke produced from the smoking article. The sidestream smoke processing part includes a filter including a filter included of pressed activated carbon having a plurality of holes allowing the sidestream smoke to pass therethrough and a ventilation fan configured to allow the sidestream smoke to be discharged through the filter. The sidestream smoke removing device obtains superior functionality in terms of a sidestream smoke removal rate and deodorizing performance while maintaining a suitable flow rate therein.