Suction nozzle for receiving fine material and fine dust

Solution Overview

Problem

Existing suction nozzles for vacuum cleaners are either optimized for coarse material or fine dust, requiring manual mode switching to pick up different particle sizes, and often result in high pushing force and noise emissions.

Innovation Solution

A suction nozzle design with a central suction mouth section and two lateral suction mouth sections, featuring a tapering cross-section and partial closure by a closing element, allowing separate areas for fine dust and coarse material collection, achieving high flow rates and low noise emissions without manual mode switching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the suction nozzle is optimized for fine dust pickup, then fine dust pickup performance is improved, but coarse material pickup capability deteriorates

Engineering Contradiction:

Improvefine dust pickup performanceVSAvoidcoarse material pickup capability

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The suction mouth is divided into a central suction mouth section and two lateral suction mouth sections. The central section is optimized for coarse material pickup with a larger opening, while the lateral sections are optimized for fine dust pickup with smaller openings and tapering cross-sections. This segmentation allows each section to be specialized for different particle sizes without compromising overall versatility.

Inventive Principle:

Principle #1Segmentation

2Productivity

If the suction nozzle is optimized for coarse material pickup, then coarse material pickup performance is improved, but fine dust pickup capability deteriorates

Engineering Contradiction:

Improvecoarse material pickup performanceVSAvoidfine dust pickup performance

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The suction mouth is divided into a central suction mouth section and two lateral suction mouth sections. The central section is optimized for coarse material pickup with a larger opening, while the lateral sections are optimized for fine dust pickup with smaller openings and tapering cross-sections. This segmentation allows each section to be specialized for different particle sizes without compromising overall versatility.

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If manual mode switching is implemented to handle different particle sizes, then adaptability is improved, but device complexity and ease of operation deteriorates

Engineering Contradiction:

Improvecapability to handle different particle sizesVSAvoidoperating mode switching mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The suction mouth is divided into a central suction mouth section and two lateral suction mouth sections. The central section is optimized for coarse material pickup with a larger opening, while the lateral sections are optimized for fine dust pickup with smaller openings and tapering cross-sections. This segmentation allows each section to be specialized for different particle sizes without compromising overall versatility.

Inventive Principle:

Principle #1Segmentation

4Productivity

If the suction mouth area is increased to improve pickup performance, then productivity is improved, but pushing force increases

Engineering Contradiction:

Improvepickup performanceVSAvoidpushing force

Core Design Contradiction:

ProductivityVSForce

Solution Approach 1:

The suction mouth is divided into a central suction mouth section and two lateral suction mouth sections. The central section is optimized for coarse material pickup with a larger opening, while the lateral sections are optimized for fine dust pickup with smaller openings and tapering cross-sections. This segmentation allows each section to be specialized for different particle sizes without compromising overall versatility.

Inventive Principle:

Principle #1Segmentation

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

Enables efficient pick-up of both fine dust and coarse material with low pushing force and noise emissions, as the design creates separate collection areas for optimal dust and dirt pickup without manual mode changes.

Implementation Method 1

The dust and/or dirt detached from the floor in this way is entrained by the suction air flow and mostly separated in a dust filter bag

Methodology Applied

Scientific EffectEntrainment: Entrainment

Data Source

PatentEP3095367B1Suction nozzle for receiving fine material and fine dust

Publication Date: 2020.08.05 VORWERK & CO INTERHOLDING GMBH

Figure 1
Figure 2

AI summary

The invention relates to a suction nozzle for a vacuum cleaner for sucking up dirt and/or dust from a floor by means of a suction air flow, having a housing (1), a suction chamber (3) formed inside the housing (1), and a suction chamber (3) opening into the suction chamber (3). Suction channel (4) for guiding the suction air flow and a suction mouth (5) designed as a bottom opening of the suction chamber (3), the suction mouth (5) having a central suction mouth section (6) and two lateral suction mouth sections (7) flanking the central suction mouth section (6). and the lateral suction mouth sections (7) are designed in such a way that the lateral suction mouth sections (7) extend away from the suction channel (4) towards opposite sides (9a) of the suction nozzle, tapering in their cross section, and at their head ends each through a closing element (10a) are partially closed.