Cyclone Bin Assembly for Fine Dust Re-Entrapment Control
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Solution Overview
Problem
Current surface cleaning apparatuses, such as vacuum cleaners, face inefficiencies in separating dirt particles due to re-entrainment and fouling of suction motors and filters, particularly with fine particles, as existing cyclonic cleaning stages and filters do not effectively handle the full range of particle sizes and velocities.
Innovation Solution
The design incorporates a cyclone chamber and dirt collection chamber assembly with varying cross-sectional areas and a fine particle separator to enhance separation efficiency, where the cyclone chamber uses a fine particle separator with a flow chamber that accelerates air to dislodge fine dirt particles and disrupts airflow to prevent re-entrainment, and the dirt collection chamber has a ribbed structure to further dislodge particles and reduce re-entrainment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cyclone chamber is used to separate dirt particles from air, then separation of larger particles is improved, but fine particles are re-entrained and foul the suction motor and filters
Solution Approach 1:
The air treatment system is divided into multiple cyclone chambers with different cross-sectional areas. The first cyclone chamber handles larger particles, while the second cyclone chamber with smaller cross-sectional area handles fine particles. This segmentation allows each chamber to be optimized for specific particle size ranges, preventing fine particle re-entrainment that would occur in a single-chamber system.
Solution Approach 2:
Each cyclone chamber is designed with specific local characteristics - the first chamber has a larger cross-sectional area suitable for coarse particle separation, while the second chamber has a smaller cross-sectional area optimized for fine particle separation. This local quality differentiation ensures that each region of the system performs its specific separation function effectively.
2Measurement precision
If the cross-sectional area of the dirt collection chamber is reduced, then separation efficiency is improved, but the chamber volume decreases
Solution Approach 1:
The dirt collection function is segmented across multiple cyclone chambers rather than relying on a single large chamber. The first cyclone chamber collects larger particles, while the second cyclone chamber collects fine particles. This segmentation allows the system to achieve high separation efficiency with smaller individual chamber volumes, as each chamber is optimized for its specific particle size range rather than attempting to handle all particles in one large volume.
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 improves the separation efficiency of fine dirt particles, reducing re-entrainment and fouling of the suction motor and filters, leading to a more effective cleaning process and extended apparatus lifespan.
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
By varying the transverse cross sectional area of the dirt collection chamber, the flow dynamics of the air in the dirt collection chamber may be varied and the amount of dirt that is disentrained from the air may be decreased, or the amount of dirt that is re-entrained may be reduced.
Data Source
AI summary
A surface cleaning apparatus comprises an air flow passage extending from a dirty air inlet to a clean air outlet and a suction motor. The surface cleaning apparatus may also comprise a cyclone chamber provided in the air flow passage. The cyclone chamber may comprise a cyclone air inlet, a cyclone air outlet and a dirt outlet. The surface cleaning apparatus may comprise a dirt collection chamber having a dirt inlet, a dirt collection chamber first end, an opposed dirt collection chamber second end and a longitudinally extending sidewall. Various design improvements are provided.