Washable bin for a robot vacuum cleaner
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Solution Overview
Problem
Existing cleaning bins for mobile cleaning robots often require manual removal and lack efficient airflow systems, leading to inefficiencies in debris collection and potential corrosion issues due to exposed metallic components.
Innovation Solution
A cleaning bin with a pivotable design that forms a continuous outer surface with the robot, featuring an airflow system with a prefilter and filter oriented perpendicularly to maximize volume and airflow, and absence of exposed metallic components for easy washing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual removal of the cleaning bin is required, then the bin structure can be simple, but the ease of operation deteriorates due to difficulty in removal and reattachment
Solution Approach 1:
The bin incorporates a pivotable door mechanism that transitions from a static closed position to a dynamic open position, enabling easy access and removal. The pivotable design allows the door to swing outward, facilitating one-handed operation while maintaining structural integrity during normal operation.
Solution Approach 2:
The bin is divided into separate functional components: a removable bin body, a pivotable door, and an integrated airflow system. This segmentation allows the door to be independently operated for debris disposal while the bin body remains securely attached to the robot, improving ease of operation without requiring complete bin removal.
2Reliability
If exposed metallic components are used in the bin, then manufacturing is easier, but reliability deteriorates due to potential corrosion from water exposure
Solution Approach 1:
The bin employs composite construction combining metal components with protective coatings or alternative materials in water-prone areas. This approach maintains the structural advantages of metal while preventing corrosion through material composition rather than complex assembly processes.
Solution Approach 2:
The bin incorporates protective coatings or film layers over metallic surfaces, creating a barrier against water and debris. This thin film protection maintains manufacturing simplicity while significantly improving corrosion resistance and overall reliability in wet cleaning environments.
3Volume of moving object
If the prefilter and filter are positioned parallel to each other, then the airflow path is simple, but the volume of the bin deteriorates due to inefficient space utilization
Solution Approach 1:
The filter assembly transitions from a parallel arrangement to a perpendicular orientation, utilizing the vertical dimension of the bin. The prefilter remains horizontal while the main filter is positioned vertically, creating a three-dimensional airflow path that maximizes bin volume while maintaining effective filtration.
Solution Approach 2:
The perpendicular filter arrangement allows nested positioning where the main filter is contained within the bin structure in a space-efficient manner. This nesting approach optimizes volume utilization by placing components in available three-dimensional space rather than requiring separate parallel planes.
4Ease of operation
If the inlet door is fixed, then the structure is simple, but the ease of operation deteriorates due to inability to easily access debris
Solution Approach 1:
The inlet door is designed to pivot from a fixed closed position to an open position, providing dynamic access to the debris collection area. This pivotable mechanism enables easy one-handed operation for debris disposal while maintaining structural simplicity through a single hinge connection rather than complex multi-component 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 easy one-handed removal and reattachment of the bin, increased airflow efficiency, and prevents corrosion by allowing for rinsing without exposing metallic parts to water.
Implementation Method 1
a vacuum assembly operable to direct an airflow from the inlet of the cleaning bin to the outlet of the cleaning bin
Implementation Method 2
an airflow chamber separated from the debris chamber by a prefilter
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A cleaning bin mountable to an autonomous cleaning robot operable to receive debris from a floor surface includes an inlet positioned between lateral sides of the cleaning bin and an outlet configured to connect to a vacuum assembly, the vacuum assembly operable to direct an airflow from the inlet of the cleaning bin to the outlet of the cleaning bin. The cleaning bin includes a debris chamber to receive debris from the airflow, separated from the debris chamber by a prefilter, forming at least a portion of a top surface of the debris chamber and at least a portion of a bottom surface of the airflow chamber, and a filter socket configured to receive a filter and provide the airflow through the filter to the outlet of the cleaning bin, wherein the filter is positioned substantially perpendicular to the prefilter when the filter is positioned in the filter socket.