Vacuum Cleaner Multi-Cyclone Design for Simultaneous Dust Discharge

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Solution Overview

Problem

Existing vacuum cleaners face issues with dust and fine dust separation efficiency due to dust sticking to filters, leading to reduced airflow and user inconvenience during dust discharge, with complex or inefficient processes for discharging collected dust.

Innovation Solution

A vacuum cleaner design featuring a mesh filter with a gradually narrowing inner diameter, multiple cyclones for separate dust and fine dust collection, and a compressing device to facilitate easy discharge of dust and fine dust through a single operation, using a combination of cyclones and flow channels to separate and store dust and fine dust efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If dust is collected using a filter, then dust separation is achieved, but dust sticks to the filter causing reduced airflow and decreased separation efficiency

Engineering Contradiction:
Improvedust separation efficiencyVSAvoidairflow
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The dust collection system is segmented into multiple cyclones that operate independently. Each cyclone handles a portion of the dust separation task, preventing any single filter from becoming overloaded and clogged, thus maintaining consistent airflow and separation efficiency throughout operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent replaces the traditional filter-based mechanical separation system with a cyclone-based aerodynamic separation system. The cyclones use centrifugal force generated by rotating airflow to separate dust from air, eliminating the need for filters that clog and reduce airflow over time.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If dust is discharged from the dust collecting device, then collected dust can be removed, but dust stuck to the filter and tangled dust are not easily separated

Engineering Contradiction:
Improvedust discharge processVSAvoiddust separation complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The dust collection chamber is divided into multiple separate cyclone units, each collecting dust in distinct locations. This segmentation allows for easier dust discharge as dust from each cyclone can be accessed and removed independently, reducing the complexity of handling tangled dust from a single large collection chamber.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts dust from the airflow path using separate cyclone units positioned throughout the device. Each cyclone independently extracts and collects dust particles, preventing dust from becoming tangled in a single collection area and facilitating easier removal during discharge.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If multiple cyclones are used to separate dust and fine dust, then separation efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvedust and fine dust separation efficiencyVSAvoidcyclone system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Multiple cyclones are nested within the housing structure in a compact arrangement. The cyclones are positioned to utilize vertical and horizontal space efficiently, with smaller cyclones potentially nested within or adjacent to larger ones, reducing the overall device complexity while maintaining high separation efficiency for both dust and fine dust.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The multiple cyclones serve universal functions in the dust separation process. Each cyclone is designed to handle both dust and fine dust particles, with the system collectively providing comprehensive separation capability. This multi-functionality reduces the need for specialized components for different particle sizes, simplifying the overall device architecture.

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

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 enhances user convenience by allowing simultaneous and efficient discharge of dust and fine dust, preventing filter clogging and improving airflow, while the compressing device ensures easy and controlled dust disposal, reducing the risk of scattering.

Implementation Method 1

a first cyclone (110) configured to separate dust from air introduced together with foreign objects

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

The mesh filter (112) is installed in the hollow portion of the housing (111)

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Implementation Method 3

a compressing device to compress dust collected by the first cyclone (110)

Methodology Applied
Scientific EffectMechanical compression: Compression

Data Source

PatentEP3015041B1Vacuum cleaner
Publication Date: 2022.01.12 LG ELECTRONICS INC
  • EP3015041B1 patent drawingFigure 1
  • EP3015041B1 patent drawingFigure 2
  • EP3015041B1 patent drawingFigure 3

AI summary

A vacuum cleaner includes a first cyclone installed within a case forming an outer appearance of a dust collecting device and configured to separate dust from air introduced together with foreign objects from a lower side thereof and discharge the separated dust to a first dust storage unit through an outlet provided at an upper portion thereof, a plurality of second cyclones arranged on an inner circumferential surface of the case and configured to separate fine dust from air which has passed through the first cyclone and discharge the separated fine dust to a second dust storage unit differentiated from the first dust storage unit, and a lower cover unit coupled to the case by a hinge, configured to form bottom surfaces of the first dust storage unit and the second dust storage unit, and configured to be rotated by the hinge to simultaneously open the first dust storage unit and the second storage unit such that the dust and the fine dust are simultaneously discharged.