Floor Mop Liquid Dosing Using Capillary-Force Cloth Wicking
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Solution Overview
Problem
Existing floor cleaning devices face challenges in controlling the amount of water applied, leading to inconsistent cleaning performance and potential floor damage, with issues such as clogging, limited surface area coverage, and variability in wetness due to manual operation or reliance on vulnerable electric pumps.
Innovation Solution
A closed system where the mopping cloth acts as a wick to absorb liquid from a reservoir using capillary forces, maintaining consistent wetness and preventing clogging, with adjustable hole placement and size to optimize water distribution and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If pre-wetted cloths are used to control water amount, then water control is improved, but the surface area that can be cleaned is very limited and the cloth dries out too fast
Solution Approach 1:
The system pre-loads a reservoir with a sufficient amount of liquid before operation begins. This preliminary action ensures that the cleaning device can cover large surface areas without frequent refilling, while still maintaining controlled water application through the dosing mechanism.
Solution Approach 2:
The water delivery system is segmented into a reservoir containing bulk liquid and a dosing mechanism that distributes it. This segmentation allows the system to combine the benefits of large water capacity (from the reservoir) with precise water control (from the dosing mechanism), resolving the contradiction between water control and cleaning surface area.
2Productivity
If electric pumps or dosing systems are used for continuous liquid supply, then productivity is improved, but the systems are vulnerable to pollution/clogging and are expensive
Solution Approach 1:
The dosing mechanism uses openings of specifically optimized size (larger than 0.3mm) to prevent clogging by soap scum and residue, while still maintaining controlled liquid distribution. This parameter change (opening size) allows the system to achieve continuous liquid supply without the clogging vulnerability of smaller opening systems.
Solution Approach 2:
The dosing mechanism with its simple opening structure is designed to be inexpensive and easily replaceable. Rather than using complex, expensive electric pumps vulnerable to clogging, the system employs a simpler dosing mechanism that can be maintained or replaced at low cost, improving reliability.
3Manufacturing precision
If substantially evenly spaced openings are used to distribute liquid, then manufacturing precision is improved, but the openings become clogged with dirt or residue
Solution Approach 1:
The opening size in the dosing mechanism is specifically optimized to be larger than 0.3mm, which prevents clogging by soap scum and residue while still maintaining the evenly spaced distribution pattern. This parameter change resolves the contradiction between manufacturing precision and clogging resistance.
4Quantity of substance
If small opening size is used to control liquid emission, then water control precision is improved, but the openings clog easily with soap scum and residue
Solution Approach 1:
The opening size is optimized to a specific range (larger than 0.3mm) that balances liquid emission control with clogging resistance. This parameter optimization allows the system to maintain precise liquid distribution without the openings becoming clogged by soap scum and residue.
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 system ensures consistent and even wetness on the floor, independent of user speed and reservoir water level, reducing clogging risks and maintaining performance over time, with improved durability and ease of maintenance.
Implementation Method 1
the mopping cloth acts as a wick to absorb liquid from a reservoir using capillary forces
Data Source
AI summary
A liquid containing system for a floor cleaning device, the liquid containing system comprising an outlet having a plurality of openings (H) to allow a liquid (W) to be extracted by means of capillary force when a mopping substrate, e.g. a cloth (C), is mounted against the plurality of openings (H), after filling the liquid containing system being substantially closed but for the plurality of openings (H).