Rotatable Brush Self-Cleaning for Single-Pass Surface Drying
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Solution Overview
Problem
Existing surface cleaning technologies require additional means like wipers, suction, or scraping edges, which increase power consumption, wear on brushes, and risk surface damage, and fail to effectively remove all dirt and liquid in a single pass.
Innovation Solution
A rotatable brush with flexible elements having a linear mass density less than 20 g/10 km and accelerated to at least 3,000 m/s² during non-contact periods, allowing for efficient dirt and liquid pickup and expulsion without additional cleaning aids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional means like wipers, suction, or scraping edges are used to improve cleaning effectiveness, then cleaning performance is improved, but power consumption increases
Solution Approach 1:
The invention extracts and removes the additional cleaning means (wipers, suction devices, scraping edges) from the cleaning system, relying solely on the rotatable brush with specifically designed brush elements to perform all cleaning functions independently
Solution Approach 2:
The brush elements are designed to perform all cleaning tasks themselves - picking up dirt, collecting liquid, and ejecting debris - without requiring assistance from other cleaning mechanisms, making the system self-sufficient
2Reliability
If additional means like wipers, suction, or scraping edges are used to improve cleaning effectiveness, then cleaning performance is improved, but wear on brushes increases
Solution Approach 1:
The invention eliminates scraping edges and other abrasive components that would contact and wear down the brush elements, extending brush lifespan by removing these harmful interactions
Solution Approach 2:
The brush elements independently handle all cleaning tasks including debris ejection through their own mechanical action during rotation, without requiring contact with scraping edges that would cause wear
3Reliability
If scraping edges are used to ensure proper continuous cleaning of brushes, then brush cleanliness is improved, but power consumption increases and brush wear increases
Solution Approach 1:
The invention completely removes scraping edges from the system, relying instead on the brush elements' own rotation and mechanical action to shed and eject accumulated debris, eliminating the need for separate cleaning mechanisms
Solution Approach 2:
The brush elements self-clean through their rotational motion and mechanical deformation during operation, automatically ejecting accumulated dirt and liquid without requiring external scraping or cleaning assistance
4Reliability
If scraping edges are used to ensure proper continuous cleaning of brushes, then brush cleanliness is improved, but brush wear increases
Solution Approach 1:
The invention removes scraping edges that cause mechanical wear to brush elements, extending brush lifespan by eliminating this source of degradation while maintaining brush cleanliness through alternative self-cleaning mechanisms
5Reliability
If brushes contact surface with high force to improve cleaning effectiveness, then dirt pickup is improved, but surface damage risk increases
Solution Approach 1:
The invention applies different properties to different parts of the brush system - the brush elements have specific mass density and flexibility characteristics that allow gentle surface contact while maintaining effective dirt pickup capability
Solution Approach 2:
The invention changes the physical parameters of the brush elements, specifically setting the mass density between 0.03-0.08 g/cm³ and optimizing length and diameter ratios, to achieve the right balance between cleaning effectiveness and surface gentleness
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 solution enables effective, single-pass cleaning and drying of surfaces with reduced wear, minimal surface damage, and no reintroduction of dirt, achieving optimal cleaning performance on various surfaces.
Implementation Method 1
The means for driving the brush are adapted to realize an acceleration at tips of the brush elements which is at least 3,000 m/s², at least at some time during another period of each revolution of the brush than the dirt pick-up period
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A device for cleaning a surface (11) comprises at least one rotatable brush (3,4) which is provided with flexible brush elements (18) for contacting the surface (11) andpicking up dirt particles (10) and liquid which are present on the surface (11) during a dirtpick-up period of each revolution of the brush (3, 4), and means for driving the brush (3, 4).A linear mass density of the flexible brush elements (18) is chosen such as to be lower than 50 g per 10 km, at least at tip portions, and an acceleration at tips of the brush elements (18) is set such as to be at least 3,000 m/sec2, at least at some time during another period of each revolution of the brush (3, 4) than the dirt pick-up period, namely a period in which the brush elements (18) are free from contact to the surface (11).