Sweeper/scrubber system capable of handling large debris
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Solution Overview
Problem
Current floor cleaning systems require pre-sweeping to remove large debris, which can clog vacuum systems, and involve multiple machines for different surfaces, making the process inefficient and costly.
Innovation Solution
A sweeper/scrubber assembly that combines sweeping and scrubbing functions with a solid debris collection reservoir offset from vacuum orifices, allowing for simultaneous debris collection and cleaning without pre-sweeping, and includes a vacuum squeegee for fluid extraction, integrated with a mobile floor maintenance machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a traditional vacuum-based debris collection system is used, then small debris can be effectively collected, but large debris will clog the vacuum orifices and lines
Solution Approach 1:
The debris collection system is segmented into two separate pathways: a vacuum pathway for small debris and a gravity-fed pathway for large debris. The collection reservoir is divided into a first portion receiving debris from the vacuum and a second portion receiving large debris through a debris opening, preventing clogging while maintaining comprehensive collection capability.
Solution Approach 2:
The large debris collection pathway is extracted from the vacuum system entirely. A separate debris opening positioned away from vacuum orifices allows large debris to enter the reservoir through gravity and direct contact, independent of the vacuum suction pathway, thus preventing clogging of vacuum components.
2Reliability
If multiple separate machines are used for sweeping and scrubbing, then each function can be optimized, but operational efficiency decreases and cost increases
Solution Approach 1:
The sweeper/scrubber assembly merges sweeping and scrubbing functions into a single integrated device. The assembly includes both a vacuum system for sweeping debris and a scrubbing system with brushes and fluid dispensing, allowing both functions to be performed simultaneously by one machine, improving productivity while maintaining effective cleaning.
Solution Approach 2:
The floor maintenance machine is designed with multi-functionality, capable of performing sweeping, scrubbing, and debris collection in a single pass. The universal design allows the machine to handle various floor surfaces and debris types without requiring operator switching between multiple specialized machines.
3Productivity
If a single integrated sweeper/scrubber assembly is used, then operational efficiency improves, but the risk of clogging increases
Solution Approach 1:
The collection reservoir is segmented into distinct zones: a first portion for vacuum-collected debris and a second portion for large debris entering through a separate opening. This segmentation prevents large debris from interfering with vacuum orifices and lines, reducing clogging risk while maintaining integrated operation.
Solution Approach 2:
The collection reservoir acts as an intermediary chamber that receives and separates different types of debris before discharge. Large debris enters through a dedicated opening and is contained in a portion of the reservoir away from vacuum pathways, serving as a buffer that protects the vacuum system from clogging while enabling continuous operation.
4Quantity of substance
If the debris collection reservoir is positioned near vacuum orifices, then debris collection is maximized, but large debris will block vacuum pathways
Solution Approach 1:
The collection reservoir is positioned asymmetrically relative to the vacuum orifices, with the debris opening located at a different position than the vacuum suction points. This asymmetric arrangement allows the reservoir to be close enough to collect debris effectively while maintaining clear pathways for vacuum airflow, preventing blockage by large debris.
Solution Approach 2:
The debris collection system utilizes a different spatial dimension for large debris entry. Instead of relying solely on vacuum suction from below, large debris enters through a side or top opening that is spatially separated from the vacuum orifice plane, allowing simultaneous operation without interference between the two collection 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
Enables efficient and economical cleaning of various floor surfaces by eliminating the need for pre-sweeping and using a single machine for both sweeping and scrubbing, reducing clogging and operational complexity.
Implementation Method 1
The vacuum squeegee is positioned against one of the first brush and the second brush. The vacuum squeegee is configured to apply a vacuum suction force to a face of the first brush or the second brush against which the vacuum squeegee is positioned.
Implementation Method 2
The cleaning fluid dispensing system is configured to dispense cleaning fluid on at least one of the floor surface, the first brush, and the second brush.
Implementation Method 3
motorized cleaning brushes that sweep and scrub the floor surface being cleaned
Implementation Method 4
The first brush is configured to rotate along the floor surface about a first rotational axis. The second brush is positioned adjacent to the first brush and configured to rotate along the floor surface about a second rotational axis.
Implementation Method 5
a solid debris collection reservoir positioned to receive solid debris removed from the surface being cleaned and thrown by the motorized cleaning brushes
Implementation Method 6
solid debris removed from the surface being cleaned and thrown by the motorized cleaning brushes
Data Source
AI summary
A sweeper/scrubber assembly may be used to clean a floor surface without dry sweeping or mopping solid debris from the floor surface before conveying the sweeper/scrubber assembly over the floor surface. In some examples, the sweeper/scrubber assembly includes at least two counter-rotating brushes, a cleaning fluid dispensing system, a vacuum squeegee, and a solid debris collection reservoir. The cleaning fluid dispensing system can dispense cleaning fluid on the floor being cleaning and or one or both brushes. The vacuum squeegee can be positioned against a face of one of the brushes and can apply a vacuum suction force to the face of the brush. The solid debris collection reservoir can be a space not exposed to a vacuum force that collects solid debris thrown by the rotating brushes.