Floor cleaning machine
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Solution Overview
Problem
Existing floor cleaning machines lack an efficient mechanism for effective dirt suction and wiping while minimizing fluid short-circuiting and abrasion marking, especially when dealing with varied floor surfaces and dirt types.
Innovation Solution
The floor cleaning machine incorporates a design with a suction channel system featuring adjustable mouth walls and a contact element that protrudes into the cleaning roller, creating a negative pressure zone for enhanced suction, combined with a wiping function and a sweeping lip for coarse dirt pickup, and uses a supplementary air device to maintain suction power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction channel mouth is positioned close to the cleaning roller for effective suction, then suction efficiency is improved, but fluid short-circuiting increases
Solution Approach 1:
The suction channel mouth is divided into multiple walls (first mouth wall and second mouth wall) that are spaced apart, creating a segmented structure. This segmentation allows the suction opening to be positioned close to the cleaning roller for effective suction while the spaced walls prevent direct fluid short-circuiting paths between the suction side and atmospheric side.
Solution Approach 2:
The spaced mouth walls act as intermediary structures that mediate between the need for close proximity to the cleaning roller (for suction efficiency) and the need to prevent fluid short-circuiting. The walls create a controlled flow path that directs air and particles through the suction channel while blocking direct short-circuit paths.
2Productivity
If the cleaning roller applies sufficient pressure for effective cleaning, then cleaning performance is improved, but abrasion marking on the floor increases
Solution Approach 1:
The suction system is designed to create localized negative pressure zones at the suction channel mouth that are concentrated on the cleaning roller surface. This local quality enhancement allows effective dirt removal through suction without requiring excessive rolling pressure, thereby preventing abrasion marking on the floor.
Solution Approach 2:
The invention uses pneumatic principles by creating a negative pressure field through the fan device and suction channel system. This pneumatic suction force acts on the cleaning roller to lift and remove particles, reducing the mechanical pressure needed from the roller, thus preventing floor abrasion while maintaining effective cleaning.
3Productivity
If the mouth walls contact the cleaning substrate for optimized suction, then suction result is improved, but device complexity increases
Solution Approach 1:
The mouth walls are designed to serve multiple functions: they define the suction opening geometry, control airflow direction, prevent fluid short-circuiting, and can contact the cleaning substrate for optimized suction when needed. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
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 configuration achieves optimized suction and wiping results, reduces fluid short-circuiting, and prevents abrasion marking by ensuring effective dirt removal and gentle floor treatment, while allowing for easy operation and efficient dirt collection.
Implementation Method 1
The at least one cleaning roller is moved past the at least one mouth where a negative pressure is applied, i.e. where a suction flow is created
Data Source
AI summary
A floor cleaning machine is provided, in particular a hand-guided and/or hand-held floor cleaning machine, including a support device, at least one cleaning roller arranged on the support device, capable of being driven in rotation and provided with a cleaning substrate, said cleaning substrate being made of a textile material; and at least one mouth towards the at least one cleaning roller that includes a first and a spaced second mouth wall having a mouth opening therebetween, wherein the first mouth wall is positioned above the second mouth wall relative to the direction of gravity, wherein the first and/or second mouth wall protrude(s) into the cleaning substrate of the at least one cleaning roller.