Evacuation Station Filter Bag Conduit to Prevent Debris Clogs
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Solution Overview
Problem
Autonomous cleaning robots face inefficiencies due to debris accumulation in evacuation stations, leading to clogs and false positive detections, which reduce the number of cleaning operations and require unnecessary cleanup efforts.
Innovation Solution
A filtering device with a conduit designed to inhibit debris accumulation, featuring a filter bag with a tapered conduit that separates debris from airflow, allowing for easier removal and detection of full capacity without false positives, and an evacuation station that can autonomously detect and address obstructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard conduit is used in the filtering device, then the device structure is simple, but debris accumulates at the interface between conduits causing clogs
Solution Approach 1:
The conduit includes a tapered section that transitions from a first diameter to a second diameter, creating a curved flow path that prevents debris accumulation. This curved geometry allows debris to flow smoothly through the conduit without getting trapped at sharp corners or interfaces, thereby maintaining reliable debris flow continuity while accepting increased geometric complexity.
2Productivity
If the filtering device is removed frequently to empty debris, then debris capacity is maintained, but cleaning operations are interrupted and cleanup effort increases
Solution Approach 1:
The filtering device is designed as a disposable component that is replaced rather than cleaned and reused. This eliminates the time loss associated with frequent filter removal, cleaning, and reinstallation, while maximizing productivity by allowing continuous operation until the filter is full. The tapered conduit design ensures the filter reaches full capacity without premature clogging.
Solution Approach 2:
The filtering device is pre-designed with a tapered conduit geometry that prevents debris accumulation during its service life. This preliminary design feature ensures that the filter maintains optimal debris flow characteristics throughout its entire capacity, allowing maximum cleaning operations to be performed between replacements without interruption for maintenance.
3Object-generated harmful factors
If the conduit opening at the filter bag is small, then debris is contained better during removal, but debris accumulation is more likely at the conduit interface
Solution Approach 1:
The conduit features varying opening sizes at different locations: a smaller opening at the filter bag interface to contain debris during removal, and a larger opening at the evacuation station interface to prevent accumulation. This local variation in geometry optimizes both debris containment and flow reliability at each specific location where different functional requirements exist.
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 solution increases the number of cleaning operations before filter replacement, reduces debris spillage during removal, and minimizes false positive detections, enhancing the efficiency and performance of autonomous cleaning robots and evacuation stations.
Implementation Method 1
The filter bag is configured to separate at least the portion of the evacuated debris from a flow of air generated by the evacuation station
Implementation Method 2
a flow of air generated by the evacuation station to direct the flow of air through the filter bag
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A bag-based filtering device for collecting debris from a cleaning robot via a debris evacuation station includes a filter bag configured to separate at least the portion of the evacuated debris from a flow of air generated by the evacuation station. The filtering device includes a conduit extending inward from an opening of the filter bag into the receptacle. The conduit is configured to pneumatically connect a receptacle of the filtering device with an inlet of the filtering device to direct the flow of air generated by the evacuation station through the filter bag to separate at least the portion of the evacuated debris from the flow of air.