Vacuum Dust Filter Layout Using Vortex Separation

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Solution Overview

Problem

Existing dust separation units for vacuum cleaners are not compact enough and often suffer from filter clogging due to premature dust penetration, which affects suction power and noise levels.

Innovation Solution

A dust separation unit utilizing vortex separation technology with a lattice structure and air guiding means that separates the air flow from the dust filter, allowing centrifugal force to direct dust into a collection chamber while keeping the filter clean by preventing early dust-laden air from penetrating the filter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a traditional dust separation unit is used, then dust can be collected, but the unit becomes large and filter clogging occurs due to premature dust penetration

Engineering Contradiction:
Improvedust separation unit sizeVSAvoidfilter clogging resistance
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The dust separation unit is divided into distinct functional zones: a vortex generation zone with tangential air inlet for centrifugal separation, and a filtration zone with filter elements. This segmentation allows dust to be separated before reaching the filter, preventing clogging while maintaining a compact design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Centrifugal separation is performed as a preliminary action before filtration. The vortex separator removes coarse dust particles from the air stream before the air reaches the filter elements, preventing premature dust penetration and filter clogging.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the filter is exposed to dust-laden air early, then filtration occurs, but suction power decreases and noise increases due to filter clogging

Engineering Contradiction:
Improvesuction powerVSAvoidnoise
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The vortex separator acts as an intermediary device between the air inlet and the filter elements. It pre-treats the dust-laden air by removing coarse particles through centrifugal force, protecting the filter from immediate clogging and maintaining sustained suction power with reduced noise.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Volume of moving object

If a compact design is implemented, then space is saved, but air flow separation from the filter becomes difficult

Engineering Contradiction:
Improvevacuum cleaner sizeVSAvoidair flow path design
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The vortex separator and filter assembly are merged into a single integrated compact unit. The tangential air inlet creates a vortex that naturally separates air flow from the filter surface, enabling effective dust separation in a space-efficient design without complex additional components.

Inventive Principle:
Principle #5Merging (Combining)

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

This design allows for a more compact vacuum cleaner with improved suction power and reduced noise, as the lattice structure with air guiding means directs dust effectively into a collection chamber, minimizing filter clogging and maintaining efficient air flow.

Implementation Method 1

A dust separation unit utilizing vortex separation technology with a lattice structure and air guiding means that separates the air flow from the dust filter, allowing centrifugal force to direct dust into a collection chamber

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP2679133B1Dust filter system for a vacuum cleaner and vacuum cleaner
Publication Date: 2019.02.06 BSH HAUSGERATE GMBH
  • EP2679133B1 patent drawingFigure 1~2
  • EP2679133B1 patent drawingFigure 3~4
  • EP2679133B1 patent drawingFigure 5~6

AI summary

The unit (1) has an air inlet opening (3), and an air outlet opening (4), where air flows from the inlet opening to the outlet opening. A cylindrically formed grating structure (5) carries an air conducting unit (13) i.e. rod, that extends over a section of the structure. The structure has openings (7), and a dust filter (9) covers one of the openings. The conducting unit and the dust filter are separated from each other by a wall (14), where the dust filter and the wall are arranged at a distance from each other. The conducting unit is arranged at a casing surface of the structure.