Cleaning Roller Suction Mouth Structure to Limit Fluid Short-Circuiting
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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 on surfaces.
Innovation Solution
The floor cleaning machine incorporates a design with a suction channel system featuring a mouth configuration where the first and second mouth walls are in contact with or protrude into the cleaning roller, creating a negative pressure area for effective dirt suction, and includes a contact element for enhanced fluid-tightness and a sweeping lip for coarse dirt pickup, along with a supplementary air device for maintaining suction power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mouth walls are configured to contact or protrude into the cleaning roller, then suction effectiveness is improved, but device complexity increases
Solution Approach 1:
The mouth is divided into two separate walls (first mouth wall and second mouth wall) that can be independently configured. This segmentation allows each wall to contact or protrude into the cleaning roller substrate separately, creating effective suction zones without requiring a complex monolithic structure. The segmented design simplifies manufacturing while maintaining high suction effectiveness.
2Productivity
If the cleaning roller is used for both wiping and suction, then cleaning efficiency is improved, but abrasion marking on surfaces may occur
Solution Approach 1:
The cleaning roller is designed with differentiated local properties: the cleaning substrate provides wiping functionality while the suction mouth walls create localized negative pressure zones for dirt removal. This local quality differentiation allows the roller to perform both wiping and suction functions simultaneously without the entire surface causing abrasion, as dirt is actively removed from contact points by the suction action.
3Productivity
If the mouth walls are positioned close to the cleaning roller for effective suction, then suction power is improved, but fluid short-circuiting increases
Solution Approach 1:
The first and second mouth walls act as intermediary structures between the suction source and the cleaning roller surface. These walls create a controlled flow path that directs air and dirt particles into the suction channel while preventing direct short-circuiting. The walls position the suction opening close to the roller for effective dirt pickup while maintaining sufficient spacing to guide fluid flow properly through the intended path.
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 functions, reduces fluid short-circuiting, and prevents abrasion marking by ensuring effective dirt collection and gentle surface treatment.
Implementation Method 1
a fan device for creating a suction flow, and a suction channel device for the suction flow which provides at least one suction channel operatively connected for fluid communication between the fan device and the at least one cleaning roller
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.