Robotic Cleaner Dock With Pneumatic Debris Evacuation
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Solution Overview
Problem
Existing robotic cleaners lack an efficient method for autonomously evacuating debris collected from their bins and simultaneously charging, as they require manual intervention for debris disposal and charging, which can lead to inefficiencies and increased maintenance.
Innovation Solution
A robotic evacuation station with a base and canister system that pneumatically interfaces with the cleaner's debris bin, allowing for autonomous debris evacuation and charging, featuring a ramp for alignment, pneumatic conduits, air movers, particle filters, and a controller to manage operation modes for efficient debris removal and air filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual intervention is used for debris disposal and charging, then device complexity is reduced, but productivity and automation are worsened
Solution Approach 1:
The evacuation station is divided into modular components including a base unit with air mover and particle filter, and a removable canister with separator and collection bin. This segmentation allows independent functionality of each module while maintaining overall automation, resolving the contradiction between automation and complexity.
Solution Approach 2:
A flow control valve acts as an intermediary component that automatically switches between evacuation mode and air filtration mode based on the presence of the robotic cleaner. This intermediary mechanism enables autonomous operation without requiring complex control systems, thereby improving automation while managing device complexity.
2Productivity
If pneumatic evacuation system is implemented, then productivity is improved, but use of energy is worsened
Solution Approach 1:
The air mover operates periodically rather than continuously - it activates only when the robotic cleaner is docked and needs evacuation, and remains inactive during air filtration mode. This periodic operation maintains high productivity during evacuation while significantly reducing overall energy consumption.
Solution Approach 2:
The air mover serves dual functions: evacuating debris from the robotic cleaner's bin and filtering ambient air when the cleaner is absent. This multi-functionality allows the system to maintain high productivity across different operational states while optimizing energy usage by avoiding redundant operation.
3Object-generated harmful factors
If particle filter is added to exhaust air, then harmful factors are reduced, but device complexity is worsened
Solution Approach 1:
The particle filter is extracted as a dedicated component in the exhaust path, separating the filtration function from the main evacuation system. This extraction allows effective removal of harmful particles while maintaining a relatively simple overall structure, as the filter is a standalone element that can be independently maintained or replaced.
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 autonomous and efficient debris evacuation and charging of robotic cleaners, reducing manual intervention and improving maintenance efficiency by integrating debris removal and charging processes within the robotic cleaner's operation.
Implementation Method 1
The air mover has an inlet and an exhaust, with the air mover moving air received from the inlet out the exhaust
Implementation Method 2
The evacuation station may pass an air flow through a particle filter to remove small particles (e.g., ̃0.1 to ̃0.5 micrometers) before exhausting to the environment
Implementation Method 3
The separator defines at least one collision wall and channels arranged to direct the flow of air from the second conduit portion of the pneumatic debris intake conduit toward the at least one collision wall to separate debris out of the flow of air
Data Source
AI summary
An evacuation station includes a base and a canister removably attached to the base. The base includes a ramp having an inclined surface for receiving a robotic cleaner having a debris bin. The ramp defines an evacuation intake opening arranged to pneumatically interface with the debris bin. The base also includes a first conduit portion pneumatically connected to the evacuation intake opening, an air mover having an inlet and an exhaust, and a particle filter pneumatically the exhaust of the air mover. The canister includes a second conduit portion arranged to pneumatically interface with the first conduit portion to form a pneumatic debris intake conduit, an exhaust conduit arranged to pneumatically connect to the inlet of the air mover when the canister is attached to the base, and a separator in pneumatic communication with the second conduit portion.