Integrated Axial Cyclone Structure for Uniform Vacuum Dust Separation

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Solution Overview

Problem

Conventional vacuum cleaners with axial cyclones face issues such as non-uniform airflow distribution, manufacturing gaps leading to reduced separation performance, and complex assembly processes due to separate manufacture of cyclone components.

Innovation Solution

A dust collector design featuring integrated axial cyclones with connected outer side walls and guide vanes, and an auxiliary member for enhanced separation performance, simplifying assembly through a coupling structure between the cyclone unit and case.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If axial cyclones are manufactured in a separated manner with gaps between outer side wall and guide vanes, then manufacturing complexity is reduced, but separation performance deteriorates

Engineering Contradiction:
Improvemanufacturing complexityVSAvoidseparation performance
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent merges the outer side wall and guide vanes into a single integrated component structure. The guide vanes are directly formed on the outer side wall surface, eliminating the gaps that exist in conventional separate manufacturing approaches. This integration maintains separation performance while simplifying the manufacturing process through unified production.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The outer side wall is designed to serve multiple functions: it provides the structural boundary of the cyclone chamber and simultaneously supports the guide vanes for vortex generation. This multi-functional design eliminates the need for separate guide vane components, resolving the contradiction between manufacturing simplicity and separation performance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If axial cyclones are manufactured as separate components requiring assembly, then manufacturing flexibility is improved, but assembly complexity increases

Engineering Contradiction:
Improvemanufacturing flexibilityVSAvoidassembly process
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

By combining the guide vanes and outer side wall into a single integrated component, the patent reduces the number of parts requiring assembly. The unified structure eliminates complex assembly operations while maintaining manufacturing flexibility through the ability to produce multiple identical integrated units.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If inflow is concentrated onto a specific region of axial cyclone, then local separation efficiency is improved, but overall uniformity of airflow distribution deteriorates

Engineering Contradiction:
Improvelocal separation efficiencyVSAvoidairflow distribution uniformity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The guide vanes are strategically positioned and angled to create localized vortex flow patterns at specific regions of the cyclone chamber. This local quality approach generates intense separation zones where needed while the overall design maintains balanced airflow distribution across the entire cyclone structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The curved geometry of the guide vanes and cyclone chamber creates smooth airflow transitions that distribute inflow uniformly across the separation region. The spherical/cylindrical geometry naturally guides the airflow to achieve both local efficiency and global uniformity through continuous curved flow paths.

Inventive Principle:
Principle #14Spheroidality (Curvature)

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 integrated design improves separation efficiency by eliminating gaps between cyclone components, facilitating assembly, and enhancing overall performance by ensuring uniform airflow distribution.

Implementation Method 1

A cyclone used in the vacuum cleaner may be categorized into a vertical cyclone or an axial cyclone according to an air inflow direction

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 2

a vortex is generated by using the guide vanes, etc.

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

an apparatus capable of discharging clean air by sucking air by a suction force

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentEP4052628B1Dust collecting apparatus and vacuum cleaner having same
Publication Date: 2023.05.31 LG ELECTRONICS INC
  • EP4052628B1 patent drawingFigure 1A
  • EP4052628B1 patent drawingFigure 1B
  • EP4052628B1 patent drawingFigure 2

AI summary

The present invention provides a dust collecting apparatus and a vacuum cleaner having same, the dust collecting apparatus comprising: a primary cyclone unit which is formed so as to separate dust from the air flowed in from the outside; and a secondary cyclone unit comprising a set of axial cyclones for separating fine dust from the air flowing in in the axial direction. The set comprises: casings forming outer walls of the periphery of each of hollow portions; and a fine dust separating member disposed above the casings and for forming, with the casings, the axial cyclones. The fine dust separating member comprises: vortex finders disposed on the inner side of each of the casings; band parts formed away from each vortex finder so as to surround the outer peripheral side of each vortex finder and having a shape which corresponds to the casings so as to be mounted on the casings and form, with the casings, the outer wall of each of the axial cyclones; and guide vanes disposed between the vortex finders and band parts, connected to the vortex finders and band parts and extending along a spiral direction.