Wet cleaning device having a cleaning roller which can be rotated about a roller axis
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Solution Overview
Problem
Existing wet-cleaning devices require a large quantity of cleaning liquid and have long regeneration times due to the reliance on centrifugal forces to remove dirt from the cleaning roller, which is inefficient.
Innovation Solution
A decelerating element with an impact edge is used to abruptly decelerate the cleaning roller's fibers, creating a whip effect that removes adhering liquid and dirt, allowing for regeneration with less liquid and reduced time, and the element is designed to be displaceable for optimal placement during regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If centrifugal forces are used to remove dirt from the cleaning roller during rotation, then the cleaning roller can be regenerated, but a large quantity of cleaning liquid is required and regeneration time is long
Solution Approach 1:
The patent applies mechanical vibration through a decelerating element that periodically contacts the cleaning roller surface during rotation. This creates vibratory motion that enhances the removal of dirt and liquid from the fibers, replacing the insufficient centrifugal forces. The vibration frequency and amplitude are controlled to optimize cleaning efficiency while reducing liquid consumption and regeneration time.
Solution Approach 2:
The patent changes the operational parameters by introducing a decelerating element that periodically reduces the rotational speed of the cleaning roller. This parameter change (speed modulation) creates conditions for more effective dirt removal through controlled deceleration and subsequent acceleration cycles, improving regeneration efficiency without requiring large quantities of cleaning liquid.
2Speed
If high rotational speed is used to spin off dirt from the cleaning roller, then regeneration can be achieved, but a large quantity of cleaning liquid is required to moisten the wiping body
Solution Approach 1:
The decelerating element introduces mechanical vibration that works synergistically with rotational motion. This vibration enhances the centrifugal effect at lower rotational speeds, allowing effective dirt removal without requiring high rotational speeds that would necessitate large quantities of cleaning liquid for pre-moistening.
Solution Approach 2:
The patent partially replaces the purely mechanical centrifugal separation system with a vibration-based mechanism. This substitution allows the system to achieve effective dirt removal at lower rotational speeds, thereby reducing the need for large quantities of cleaning liquid to maintain adequate moisture levels in the cleaning roller.
3Productivity
If the cleaning roller rotates at high speed for regeneration, then dirt can be removed, but the process takes a long time
Solution Approach 1:
The mechanical vibration generated by the decelerating element significantly accelerates the dirt removal process. The vibratory motion disrupts the adhesion between dirt particles and the cleaning roller fibers, enabling faster regeneration. This reduces the time required for effective regeneration while maintaining or improving cleanup efficiency compared to high-speed rotation alone.
Solution Approach 2:
The decelerating element creates periodic action through repeated cycles of deceleration and acceleration as it contacts the rotating cleaning roller. This periodic modulation enhances the removal efficiency during each cycle, allowing the regeneration process to be completed in less time while achieving thorough cleaning results.
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 method reduces the amount of liquid needed and shortens regeneration time, achieving a better cleaning effect with less water usage and lower rotational speeds, making it suitable for automated devices without large water tanks.
Implementation Method 1
The inertia of the abruptly decelerated fibers produces a whip effect, in which liquid and dirt adhering between the fibers of the cleaning lining are torn out
Implementation Method 2
a large quantity of cleaning liquid is required during the regeneration operation to moisten or rinse the wiping body, so that the centrifugal forces arising during the rotation of the wiping body can spin off the dirt that accumulated on the wiping body
Data Source
AI summary
A wet cleaning device, in particular a wet wiping device, has a cleaning roller which is rotatable about a roller axis and has a cleaning lining. In order to create a wet cleaning device in which the regeneration effect is optimized, in particular while using a minimum of liquid, the wet cleaning device has a decelerating element to assist the removal of liquid and/or of dirt from the cleaning roller, which element has an impact edge directed radially outwards with respect to the roller axis and is arranged between fibers of the cleaning lining during a regeneration operation in such a way that the free ends of the mechanically unloaded fibers project outwards in the radial direction beyond the impact edge.