Cyclone Dust Separator Geometry for Easy Vacuum Emptying

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Solution Overview

Problem

Existing dust separators for vacuum cleaners have limitations in dust separating performance and user convenience, particularly in easy emptying and minimal exertion requirements.

Innovation Solution

A dust separator design with a body featuring a larger cross-sectional area at the dust outlet compared to the air inlet, utilizing a cyclone principle with multiple air inlets and a tangentially oriented dust outlet to enhance dust separation and discharge efficiency, and a detachable dust container for simplified emptying.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cross-sectional area at the air inlet is increased to improve dust intake capacity, then the dust separating performance is improved, but the device size and complexity increase

Engineering Contradiction:
Improvedust separating performanceVSAvoiddevice size
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by varying the cross-sectional area of the cyclone separator body along its length. Specifically, the cross-sectional area is designed to be larger at the dust outlet end and smaller at the air inlet end, creating a tapered configuration. This geometric parameter change optimizes the cyclone airflow pattern, enhancing dust separation efficiency while maintaining a compact device size. The gradual area change also helps control airflow velocity and pressure distribution, improving overall separation performance without proportionally increasing device volume.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If the dust container is made detachable to improve ease of emptying, then user convenience is improved, but the device complexity increases

Engineering Contradiction:
Improveease of emptyingVSAvoiddevice structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the vacuum cleaner into distinct modular components, specifically making the dust container detachable from the main body. The dust container is designed as a separate, removable unit that can be easily detached and reattached. This segmentation allows users to easily empty the dust container by simply detaching it from the main body, significantly improving ease of operation. The modular design with standardized connection interfaces minimizes the increase in device complexity while maximizing user convenience.

Inventive Principle:
Principle #1Segmentation

3Productivity

If the cyclone airflow is intensified to improve dust separation efficiency, then dust separating performance is improved, but airflow loss increases

Engineering Contradiction:
Improvedust separating performanceVSAvoidairflow loss
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent applies parameter changes by optimizing the geometric parameters of the cyclone separator, including the tapered cross-sectional area configuration and the positioning of air inlets and dust outlets. The gradual change in cross-sectional area along the cyclone body length creates an optimized airflow pattern that maintains high cyclone intensity for effective dust separation while minimizing turbulent losses and eddy formation. This geometric optimization allows the system to achieve high dust separation efficiency with reduced airflow loss compared to conventional cyclone designs with abrupt area changes.

Inventive Principle:
Principle #35Parameter changes

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 design improves dust separating performance by generating stronger cyclone airflow, reducing airflow loss, and allowing easy discharge of both high and low-density dust, while minimizing user effort and dust accumulation on filters.

Implementation Method 1

The dust separator is generally configured to separate dust using a cyclone principle

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 2

separate dust using a cyclone principle

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentUS8302252B2Dust separating apparatus of vacuum cleaner
Publication Date: 2012.11.06 LG ELECTRONICS INC
  • US8302252B2 patent drawing
  • US8302252B2 patent drawing
  • US8302252B2 patent drawing

AI summary

A dust separator for a vacuum cleaner including a body having a pair of spaced apart ends, a first air inlet formed in the body and being configured to receive an air flow containing dust, and a dust outlet formed inwardly of the spaced apart ends and apart from the first air inlet to discharge dust separated in the body, is provided. In addition, a cross-sectional area of the body at the dust outlet is greater than a cross-sectional area of the body at the first air inlet.