Cyclone Bin Assembly Layout for Fine Dust Re-Entrapment Reduction
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Solution Overview
Problem
Current surface cleaning apparatuses, such as vacuum cleaners, have limitations in effectively disentraining finer particulate matter from the airflow stream due to re-entrainment issues, which reduces the overall efficiency of the cleaning process.
Innovation Solution
A cyclone bin assembly with a diverter wall and asymmetrically positioned dirt outlet, which separates the dirt collection chamber into two portions to accelerate airflow and direct it in a way that reduces re-entrainment of particulate matter, increasing the disentrainment of finer particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If air is drawn into the cyclone chamber for cleaning, then particulate matter is disentrained from the airflow stream, but finer particulate matter is re-entrained into the airflow stream
Solution Approach 1:
The dirt collection chamber is divided into two separate portions (first and second portions) by a partition wall with a passage. This segmentation allows the system to handle different particle sizes in different zones, with the first portion collecting larger particles and the second portion handling finer particles, thereby reducing re-entrainment of fine particulate matter while maintaining efficient disentrainment of larger particles.
Solution Approach 2:
The diverter wall is positioned to accelerate airflow specifically in the region where fine particulate matter needs to be disentrained, creating localized high-velocity flow that enhances disentrainment efficiency for finer particles without causing excessive turbulence that would lead to re-entrainment. The asymmetric positioning of the dirt outlet relative to the two portions optimizes airflow distribution to different collection zones.
2Device complexity
If a single dirt collection chamber is used, then the device complexity is reduced, but the ability to separate and collect different sizes of particulate matter is diminished
Solution Approach 1:
The dirt collection chamber is segmented into two distinct portions (first and second portions) separated by a partition wall with a controlled passage. This segmentation enables differential collection of particulate matter by size while maintaining a relatively simple overall structure that integrates with the cyclone chamber.
Solution Approach 2:
The single dirt collection chamber structure performs multiple functions: the first portion collects larger particulate matter, the second portion collects finer particulate matter, and the passage between portions allows controlled airflow and particle separation. This multi-functional design achieves enhanced separation capability without requiring completely separate collection systems.
3Productivity
If the dirt outlet is positioned to maximize airflow into the dirt collection chamber, then the cleaning efficiency is improved, but the airflow velocity decreases leading to increased re-entrainment
Solution Approach 1:
The diverter wall is strategically positioned to create localized high-velocity airflow regions where fine particulate matter needs to be disentrained, while allowing lower velocity flow in regions where particle settlement is desired. This local optimization of flow characteristics enhances disentrainment efficiency without causing excessive turbulence that would lead to re-entrainment.
Solution Approach 2:
The asymmetric positioning of the dirt outlet relative to the two portions of the dirt collection chamber creates dynamic airflow patterns that adapt to the cyclone chamber operation. The diverter wall accelerates airflow in specific regions, creating variable velocity fields that optimize disentrainment of finer particles while maintaining overall cleaning efficiency.
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
This configuration enhances the percentage of finer particulate matter disentrained from the airflow stream, improving the cleaning efficiency by minimizing the re-entrainment of settled particles.
Implementation Method 1
Air is drawn into the vacuum cleaners through a dirty air inlet and conveyed to a cyclone inlet. The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream.
Implementation Method 2
The rotation of the air in the cyclone results in some of the particulate matter in the airflow stream being disentrained from the airflow stream.
Implementation Method 3
The diverter wall is positioned proximate the dirt outlet of the cyclone chamber, and may be configured to accelerate the air flow passing through the passage.
Implementation Method 4
The divider wall may direct air away from the surface on which particulate matter has accumulates and thereby provide a wind shadow in which light particulate matter may settle.
Data Source
AI summary
A cyclone bin assembly comprises a cyclone chamber having an air inlet, an air outlet, a dirt outlet and first and second opposed ends. The cyclone bin assembly may comprise a dirt collection chamber in communication with the dirt outlet. The dirt bin may surround at least a portion of the cyclone chamber and comprising first and second portions. The first and second portions may comprise discrete chambers that are separated from each other by a passage extending between the dirt outlet and a wall of the dirt collection chamber. A portion of the wall facing the dirt outlet may extend inwardly towards the dirt outlet.