Wet cleaning device with a cleaning roller
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Solution Overview
Problem
Wet cleaning devices often leave residual cleaning liquid inside the roller cover, which can drip back onto the cleaned surface during regeneration, affecting the wiping result.
Innovation Solution
A displaceable cover element with a collecting device, such as a container, is integrated to collect and store residual liquid inside the roller cover, preventing it from dripping. The collecting device is designed to be offset radially inward on the cover element's inner wall, ensuring it is in the liquid's flow path and positioned to catch any residual liquid, with an opening that moves to prevent liquid escape during the open position and allows it to drain back during the next regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the roller cover is opened after regeneration, then the cleaning roller can be accessed for replacement or cleaning, but residual liquid inside the roller cover can drip back onto the cleaned surface
Solution Approach 1:
The harmful residual liquid is extracted from the potential drip path by channeling it to the collection device. The collection device is positioned and configured to capture liquid at the lowest point of the roller cover, separating it from the opening area where it could drip onto the cleaned surface.
Solution Approach 2:
The collection device acts as an intermediary element between the residual liquid and the external environment. It provides a controlled interface where liquid can be collected and held without directly contacting or dripping onto the cleaned surface, mediating the harmful effect.
2Object-affected harmful factors
If a collection device is added to the roller cover, then liquid dripping is prevented, but the device complexity increases
Solution Approach 1:
The collection device is merged with the roller cover structure, forming an integrated unit. The collection device utilizes the existing roller cover geometry and is positioned at the lowest point, combining the containment function with the existing structural elements rather than adding a completely separate system.
Solution Approach 2:
The roller cover structure serves multiple functions: it provides the enclosure for the cleaning roller, defines the regeneration chamber, and incorporates the collection device for liquid management. This multi-functionality reduces the need for additional separate components.
3Productivity
If the collection device is positioned radially inward on the inner wall, then liquid flow path is optimized, but the radial clearance must be precisely controlled
Solution Approach 1:
The collection device is positioned at a specific local region - the lowest point of the roller cover in the open position - where liquid naturally accumulates due to gravity. This localized positioning optimizes liquid collection efficiency without requiring precise radial clearance control across the entire roller cover structure.
Solution Approach 2:
The collection device is positioned at the lowest gravitational potential point of the roller cover, where liquid naturally flows and accumulates. This gravitational equipotential positioning ensures liquid collection without requiring active pumping or complex clearance control mechanisms.
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
Effectively prevents liquid from dripping onto the cleaned surface by collecting and storing residual liquid within the device, ensuring a consistent wiping result and efficient regeneration process.
Implementation Method 1
the liquid flows under the influence of gravity along an inner wall of the cover element towards the collecting device
Data Source
Figure 1
Figure 2
Figure 3~6
AI summary
The invention relates to a wet-cleaning appliance (1), in particular a wet mop, having a cleaning roller (3), which is mounted in a rotatable manner about a roller axis (2), and having a roller cover (4), which encloses the cleaning roller (3) in the circumferential direction, at least in part, and has at least one movable covering element (5) for optionally closing and/or releasing an opening region (6) of the roller cover (4). In order to prevent residual liquid contained in the roller cover (4) from dripping from the wet-cleaning appliance (1) when the roller cover (4) is opened, the movable covering element (5) has a collecting unit (8), in particular a collecting container, which has a storage volume for collecting liquid that remains in the roller cover (4).