Nested Parallel Cyclone Separator Assembly to Reduce Pressure Drop
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Solution Overview
Problem
Current cyclonic separator assemblies for vacuum cleaners are inefficient in separating small particles from airflow, leading to increased pressure drop and reduced effectiveness in debris collection.
Innovation Solution
A cyclonic separator assembly with a cyclone unit featuring a plurality of first and second cyclones arranged in parallel, where the second cyclones are nested between the first cyclones, and inlet paths with specific length ratios to minimize pressure drop and enhance separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single cyclone is used in the separator assembly, then the structure is simple, but the separation efficiency for small particles is insufficient
Solution Approach 1:
The single cyclone is divided into multiple cyclones (first cyclone and second cyclone) arranged in parallel. Each cyclone handles a portion of the airflow and particle separation, collectively achieving higher separation efficiency for small particles while maintaining a manageable structural complexity through modular arrangement.
Solution Approach 2:
The second cyclone is positioned nested within the spatial envelope of the first cyclone, with both cyclones sharing a common inlet structure. This nested arrangement maximizes the use of available space, allowing multiple cyclones to be integrated without proportionally increasing the overall device footprint and complexity.
2Manufacturing precision
If multiple cyclones are added to improve separation efficiency, then small particle separation improves, but pressure drop increases
Solution Approach 1:
The total airflow is segmented into multiple parallel streams, each passing through individual cyclones. This distribution reduces the airflow burden on each cyclone, minimizing the pressure drop across each unit while collectively achieving high separation efficiency through the parallel configuration.
Solution Approach 2:
Instead of adding cyclones in series (which would increase pressure drop), the cyclones are arranged in parallel, utilizing a different dimensional configuration. This parallel arrangement allows airflow to be divided and processed simultaneously through multiple paths, reducing the cumulative pressure drop while maintaining high separation efficiency.
3Manufacturing precision
If the inlet path length is increased to improve particle separation, then separation efficiency improves, but pressure drop increases
Solution Approach 1:
The inlet path geometry is optimized with different characteristics for different cyclones. The first inlet path and second inlet path have different length ratios (L1/L2 between 0.5-2.0) tailored to the specific requirements of each cyclone configuration, allowing each to achieve effective separation with minimized pressure drop according to its local spatial constraints.
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 arrangement effectively separates small particles from airflow, reducing pressure drop and improving debris collection efficiency while maintaining a compact design.
Implementation Method 1
an apparatus for separating solids from gas using cyclones
Implementation Method 2
The cyclone unit includes a plurality of first cyclones and a plurality of second cyclones arranged in parallel
Data Source
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AI summary
A cyclonic separator assembly for use with a vacuum cleaner includes a body having an inlet, an outlet, and an inner surface. The cyclonic separator assembly also includes a cyclone unit positioned within the body between the inlet and the outlet. The cyclone unit has an outer perimeter that is spaced apart from the inner surface of the body to define an inlet space therebetween. The cyclone unit includes a plurality of first cyclones in communication with the inlet space and arranged along an outer circle adjacent the outer perimeter. The cyclone unit also includes a plurality of second cyclones in communication with the inlet space and arranged along an inner circle that is spaced apart from the outer circle such that each second cyclone is nested between two adjacent first cyclones. The plurality of first cyclones and the plurality of second cyclones are arranged in parallel.