Multi-Stage Cyclone Layout for Fine Dust Separation
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Solution Overview
Problem
Existing cyclonic separating apparatus in vacuum cleaners do not achieve 100% separation efficiency for entrained dirt and dust from airflow, leading to unreliable particle removal.
Innovation Solution
A cyclonic separating apparatus comprising three cyclonic units in series, with the number of cyclones increasing downstream, allowing for smaller cyclones to operate efficiently without blockage, where the first unit has a single cylindrical cyclone, the second unit has multiple cyclones in parallel with smaller diameters, and the third unit has even more cyclones with even smaller diameters, enhancing separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single large cyclone is used, then larger particles can be effectively separated, but separation efficiency for finer particles is insufficient
Solution Approach 1:
The single cyclone is divided into multiple cyclonic units arranged in parallel within each stage. The first stage has 1-3 cyclones, the second stage has 4-6 cyclones, and the third stage has 7-9 cyclones. This segmentation allows the system to handle larger particle volumes while maintaining effective separation, and the multi-stage arrangement progressively removes particles of different sizes, achieving high separation efficiency for both large and fine particles.
2Measurement precision
If multiple cyclonic units are used in series, then separation efficiency is improved, but the risk of blockage increases
Solution Approach 1:
Each cyclonic unit within a stage has identical structural parameters (diameter, inlet angle, length) optimized for its specific separation task. The first stage cyclones are designed with parameters suitable for larger particles, while subsequent stages have cyclones with parameters optimized for progressively finer particles. This local optimization ensures each unit operates efficiently without overload, reducing blockage risk while maintaining high separation efficiency.
3Productivity
If cyclone diameter is reduced to increase number of units, then more particles can be separated simultaneously, but individual separation capability decreases
Solution Approach 1:
Instead of simply reducing cyclone diameter in a single stage, the system transitions to a multi-dimensional arrangement with three stages. Each stage contains multiple cyclones of optimized diameter, and the stages are arranged in series. This dimensional transition from single-stage to multi-stage configuration allows the system to maintain adequate cyclone sizes for effective separation while increasing overall processing capacity through parallel arrangement and progressive separation across stages.
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 multi-stage cyclonic separation apparatus achieves improved separation efficiency and reliability by progressively removing larger particles, allowing each successive unit to operate effectively without blockage, resulting in higher overall separation efficiency compared to individual units.
Implementation Method 1
cyclonic separating apparatus comprising: a first cyclonic separating unit including at least one first cyclone; a second cyclonic separating unit located downstream of the first cyclonic separating unit and including a plurality of second cyclones arranged in parallel; and a third cyclonic separating unit located downstream of the second cyclonic separating unit and including a plurality of third cyclones arranged in parallel
Implementation Method 2
the ability of a cyclonic separating unit to separate entrained particles from an airflow
Data Source
Figure 1~2
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AI summary
Cyclonic separating apparatus according to the invention comprises a first cyclonic separating unit (310, 410; 510) including at least one first cyclone (102; 202; 312; 412; 512), a second cyclonic separating unit (320; 420; 520) located downstream of the first cyclonic separating unit (310, 410; 510) and including a plurality of second cyclones (130; 230; 322; 422; 522) arranged in parallel, and a third cyclonic separating unit (330; 430; 530) located downstream of the second cyclonic separating unit (320; 420; 520) and including a plurality of third cyclones (148; 248; 332; 432; 532) arranged in parallel. The number of second cyclones (130; 230; 322; 422; 522) is higher than the number of first cyclones (102; 202; 312; 412; 512) and the number of third cyclones (148; 248; 332; 432; 532) is higher than the number of second cyclones (130; 230; 322; 422; 522). This provides an apparatus which achieves a higher separation efficiency than known separation apparatus.