Cyclone Separator Aperture Layout for Fine Dust Re-Entrapment
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Solution Overview
Problem
Cyclone separators in vacuum cleaners face challenges in effectively separating fine contaminants from airflow due to re-entrainment of debris and clogging issues, where larger particles obstruct the passage of fine particles, leading to incomplete separation and reduced suction performance.
Innovation Solution
A vacuum cleaner design incorporating a fine contaminant separation member with a plurality of apertures in the cyclonic airflow chamber and dirt cup sidewall, featuring a pattern of decreasing surface area to create a dead space for collecting fine contaminants, preventing re-entrainment and clogging, and ensuring efficient separation of fine particles from the airstream.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an apertured particle separation member is placed near the bottom of the cyclonic chamber to separate fine particles, then fine particle separation is improved, but larger particles block the apertures and prevent fine particles from passing through
Solution Approach 1:
The invention moves the fine particle separation function from the bottom of the cyclone (where it blocked by large particles) to the sidewall of the dirt cup (a different spatial dimension). The fine contaminant separation member with apertures is formed in the sidewall of the dirt cup, allowing fine particles to pass through into a dead space chamber while large particles are collected in the main dirt cup. This dimensional relocation resolves the blocking issue.
Solution Approach 2:
The invention segments the particle collection space into two distinct chambers: a main dirt cup for large particles and a dead space chamber for fine particles. The fine contaminant separation member acts as a segmented barrier with apertures that selectively allows fine particles to pass while blocking large particles. This segmentation prevents clogging by directing different particle sizes to different collection zones.
2Measurement precision
If a particle-separating plate with narrow slots is used to pass fine particles from the separator chamber to the fine particle-receiving chamber, then fine particle separation is improved, but large particles collect on the plate and block the slots
Solution Approach 1:
The invention relocates the separation mechanism from a horizontal plate configuration (where slots are blocked by accumulated large particles) to a vertical sidewall configuration of the dirt cup. The fine contaminant separation member is formed in the sidewall, creating apertures that are positioned below the main separation zone, preventing large particle accumulation at the separation interface.
Solution Approach 2:
The invention extracts the fine particle separation function from the main cyclone separation chamber and places it in the dirt cup sidewall region. This extraction creates a dedicated fine particle separation zone that operates independently from the main particle collection area, preventing interference between large and fine particle separation processes.
3Measurement precision
If secondary filters are positioned downstream of the cyclone separator to filter fine dust, then fine particle removal is improved, but filter clogging occurs and suction performance decreases
Solution Approach 1:
The invention performs preliminary separation of fine particles from the airflow within the cyclone system itself, before the air reaches downstream filters. The fine contaminant separation member captures fine particles in a dead space chamber within the dirt cup, preventing them from reaching and clogging downstream filters. This preliminary action maintains suction performance while achieving fine particle removal.
Solution Approach 2:
The fine contaminant separation member acts as an intermediary structure between the cyclone separation zone and the downstream filter system. It provides a dead space chamber that temporarily holds fine particles, serving as a buffer that prevents fine particles from reaching the main filter while still allowing airflow to pass through to the motor and exhaust.
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 solution effectively separates fine contaminants from the airflow, reducing the likelihood of clogging in downstream filters and maintaining suction performance by ensuring that fine particles are collected in a dedicated chamber, thereby enhancing the overall cleaning efficiency of the vacuum cleaner.
Implementation Method 1
Some follow the textbook examples using frustoconical shaped separators and others use high-speed rotational motion of the dir-laden air to separate the dirt by centrifugal force
Implementation Method 2
a fine contaminant separation member formed in at least one of the walls of the cyclonic airflow chamber and the sidewall of the dirt cup and comprising a plurality of apertures for separating fine contaminants from the dirt-containing airstream as the dirt-containing airstream flows by the fine contaminant separation member
Data Source
AI summary
A cyclone separator assembly comprises a cyclone separator that removes large particles of dirt from a working airstream as it flows through the cyclone separator, and the separated large particles of dirt are deposited into a dirt cup. The cyclone separator assembly further includes a fine particle separation member comprising a plurality of apertures for separating fine particles of dirt from air in the cyclone separator or the dirt cup.