Cyclonic separator device
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Solution Overview
Problem
Cyclonic separation devices for surface cleaning appliances face inefficiencies in separating fine dust and debris from dirt-laden air, particularly due to suboptimal design characteristics and dimensions of their component parts.
Innovation Solution
The cyclonic separator device includes a first cylindrical separating chamber for coarse dust separation and a second frusto-conical separating chamber for fine dust separation, with specific geometric ratios and configurations to enhance separation efficiency, such as the ratio of heights and diameters of the chambers and the presence of a baffle, optimizing airflow and collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the second dirt collection chamber has a uniform cross-sectional area, then the structure is simple, but the separation efficiency of fine dust is insufficient
Solution Approach 1:
The second dirt collection chamber employs variable cross-sectional area along its length, with the first portion having a larger area than the second portion. This local variation in geometry optimizes the airflow pattern and dust deposition characteristics in different regions of the chamber, thereby improving fine dust separation efficiency without requiring complex external mechanisms
Solution Approach 2:
The invention transitions from a two-dimensional uniform cross-section to a three-dimensional variable cross-section design. The cross-sectional area of the second dirt collection chamber varies along the longitudinal dimension, creating optimized flow paths and separation zones that enhance fine dust capture while maintaining a relatively simple overall structure
2Manufacturing precision
If the cyclonic separator is designed for vertical use, then the separation performance is optimized, but it cannot be effectively used in horizontal or inclined surface cleaning appliances
Solution Approach 1:
The invention modifies key geometric parameters of the cyclonic separator, including the angles of the frusto-conical portions, the dimensions and positioning of the shroud, and the cross-sectional areas of the dirt collection chambers. These parameter adjustments optimize the separator's performance for horizontal or inclined orientations while maintaining effective separation capability
Solution Approach 2:
The cyclonic separator employs asymmetric geometric features, including frusto-conical portions with specific angles and a shroud positioned at optimized locations. This asymmetric design creates favorable airflow patterns and separation zones that perform effectively in horizontal or inclined configurations, adapting the originally vertical-optimized design to new operational orientations
3Quantity of substance
If the dirt collection chamber capacity is increased, then more dust can be collected, but the separation efficiency of the first separating chamber may be compromised
Solution Approach 1:
The dirt collection system is divided into two distinct chambers: a first dirt collection chamber for coarse dust and a second dirt collection chamber for fine dust. This segmentation allows each chamber to be optimized for its specific function, with the first chamber maintaining high separation efficiency and the second chamber providing additional capacity for fine dust collection without interfering with the first chamber's performance
Solution Approach 2:
The shroud structure serves as an intermediary element between the first and second separating chambers. It is positioned to allow airflow from the first chamber to enter the second chamber while preventing direct communication between the two dirt collection chambers. This intermediary structure enables the second chamber to increase overall capacity without compromising the separation efficiency in the first chamber
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 optimized design significantly improves the separation efficiency of fine dust and debris, increasing the capacity of the dirt collection chamber without compromising the efficiency of the first separating chamber, allowing for effective cleaning with improved dirt collection and reduced re-deposition of dust.
Implementation Method 1
a cyclonic separator device for removing dust or debris from dirt-laden air
Implementation Method 2
the inlet is configured to direct the incoming dirt-laden air into said generally cylindrical portion such that it travels circumferentially around an inner surface of the first separating chamber
Data Source
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AI summary
A cyclonic separator device for removing dust or debris from dirt-laden air, the device including: a first separating chamber for separating relatively coarse dust or debris from the dirt-laden air; an inlet through which dirt-laden air is drawn into the first separating chamber; a first dirt collection chamber in communication with the first separating chamber; a shroud; a second separating chamber positioned generally within the shroud for separating relatively fine dust or debris from the dirt-laden air cleaned by the first separating chamber, a second dirt collection chamber in communication with the second separating chamber; an outlet through which cleaner air exits the second separating chamber; wherein the first separating chamber includes a generally cylindrical portion with a central axis and wherein the inlet is configured to direct the incoming dirt-laden air into said generally cylindrical portion such that it travels circumferentially around an inner surface of the first separating chamber, wherein the shroud is positioned generally centrally of the generally cylindrical portion of the first separating chamber and the shroud has a generally cylindrical portion with openings therein for the passage of air therethrough towards the second separating chamber, wherein the second dirt separating chamber includes: an inlet through which cleaned dirt-laden air exiting the first separating chamber is drawn into the second separating chamber; a generally frusto-conical portion with a central axis and the frusto-conical portion has an end-part in communication with the second dirt collection chamber through which fine dust or debris exits therethrough into the second dirt collection chamber, and wherein the inlet of the second separating chamber is configured to direct the incoming said cleaned dirt-laden air such that it travels circumferentially around an inner surface of the generally frusto-conical portion, and wherein the second dirt collection chamber includes: a first portion which surrounds an outer surface of the end part of the frusto-conical portion to define a space S1 therebetween; and a second portion connected to the first portion, wherein the first portion has a greater cross-sectional area than the second portion.