Hollow Brush Roller Airflow Design for Better Dust Mobilization

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Solution Overview

Problem

Existing floor care devices with brush rollers face inefficiencies due to high technical complexity and additional energy requirements, particularly in using fans to enhance air flow for dust mobilization.

Innovation Solution

The brush roller is designed as a hollow body with air passage openings, allowing air to flow through and function as an internal air guiding element, mimicking the effect of a fan without additional energy, by utilizing centrifugal force to direct air turbulence for improved dust mobilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If fans are arranged inside the brush roller to increase air flow, then dust mobilization is improved, but device complexity and energy consumption increase

Engineering Contradiction:

Improvedust mobilizationVSAvoidtechnical complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The invention extracts the air guiding function from separate fan components and integrates it into the brush roller structure itself. The hollow interior of the brush roller is utilized as an air guiding element, eliminating the need for additional fans while maintaining improved dust mobilization.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The brush roller is designed to serve multiple functions: it not only agitates the carpet for dust mobilization through rotation but also acts as an air guiding element. The hollow interior channels air flow to enhance the lifting effect, making the brush roller a multi-functional component that reduces overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If compressed air is introduced into the brush roller to improve dust mobilization, then cleaning performance is enhanced, but energy consumption increases

Engineering Contradiction:

Improvecleaning performanceVSAvoidenergy consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The brush roller design allows it to serve itself by utilizing the existing air flow within the vacuum cleaner system. The hollow interior acts as an air guiding element that directs ambient air through the brush roller, eliminating the need for additional energy input to generate air flow for dust mobilization.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention merges the air guiding function with the brush roller structure. By combining the hollow interior of the brush roller with air passage openings, the design integrates air channeling into the existing component, eliminating the need for separate air delivery systems and reducing overall energy consumption.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If the brush roller is designed as a hollow body with air passage openings, then dust mobilization is improved without additional energy, but manufacturing complexity increases

Engineering Contradiction:

Improvedust mobilizationVSAvoidmanufacturing complexity

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The brush roller is segmented into functional zones: the hollow interior serves as an air guiding element, while the outer surface with bristles performs mechanical agitation. Air passage openings are strategically positioned to channel air flow through specific regions, creating segmented functional areas that work together to enhance dust mobilization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of adding external air delivery mechanisms to improve dust mobilization, the invention inverts the approach by making the brush roller itself air-permeable. Air flows through the hollow interior and exits via openings in the lateral surface, reversing the conventional approach of delivering air from outside the brush roller.

Inventive Principle:

Principle #13The other way round (Inversion)

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 enhances dust mobilization and removal efficiency without electrical energy, improving the overall performance of floor care devices by directing air turbulence effectively, thus increasing energy efficiency.

Implementation Method 1

Air turbulence occurs around the circumference of the brush, which also contributes to the mobilization of the dust

Methodology Applied

Scientific EffectAir turbulence: Turbulence

Implementation Method 2

the brush roller is designed as a hollow body, the tufts of bristles rise up on the cylinder-shaped surface of the body and the surface of which has a plurality of air passage openings

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentEP2873359B1Floor cleaning device comprising a driven brush roll

Publication Date: 2016.08.31 MIELE & CO KG

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AI summary

The invention relates to a floor care device (10) with a driven brush roller (12) and a brush roller (12) for a floor care device (10), the interior of the brush roller (12) functioning as an air guiding element and the brush roller (12) overall due to the Brush roller (12) air flowing as an additional fan in the floor care device (10) acts.