Robot Cleaner Maintenance Station for Automatic Dust Box Emptying

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Solution Overview

Problem

Robot cleaners face performance degradation due to dust accumulation, which affects their cleaning efficiency and requires frequent manual maintenance.

Innovation Solution

A cleaning system comprising a robot cleaner with a dust box and a maintenance station that uses air circulation and a brush unit with rotating rollers to effectively discharge and collect dust, along with a dust sensing unit for automatic docking and maintenance, ensuring continuous cleaning performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the robot cleaner operates continuously to clean floors, then cleaning productivity increases, but dust accumulates in the dust box causing performance degradation

Engineering Contradiction:
Improvecleaning productivityVSAvoidcleaning performance
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The maintenance station enables the robot cleaner to perform self-maintenance by automatically discharging accumulated dust from its dust box. The system uses a brush unit that rotates to agitate and discharge dust, combined with air flow to remove particles, allowing the robot to restore its cleaning performance without human intervention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The maintenance station performs dust discharge operations before the dust box becomes completely full, preventing performance degradation. The system proactively maintains the robot cleaner by periodically removing accumulated dust, ensuring the robot is always ready for optimal cleaning operation.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If manual maintenance is performed frequently to maintain cleaning performance, then cleaning performance reliability is maintained, but time loss increases

Engineering Contradiction:
Improvecleaning performanceVSAvoidmaintenance time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The maintenance station automates the dust discharge process that previously required manual user intervention. The robot cleaner autonomously docks with the maintenance station, which then performs dust removal using rotating brushes and air flow, completely eliminating the need for users to manually empty the dust box.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual mechanical action of removing and emptying the dust box is replaced by an automated system combining mechanical brush rotation and pneumatic air flow. This substitution transforms a manual maintenance task into an automated process that occurs without user involvement.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If air is blown into the dust box to discharge dust, then dust discharge efficiency increases, but dust may disperse into the environment

Engineering Contradiction:
Improvedust discharge efficiencyVSAvoiddust dispersion
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The maintenance station acts as an intermediary containment structure between the dust box and the environment. Air flow is directed through controlled paths within the maintenance station housing, and discharged dust is collected in a separate container rather than being released into the surrounding environment.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The air flow that could potentially cause harmful dust dispersion is converted into a beneficial force by directing it through a controlled path. The same air pressure used to discharge dust efficiently is channeled to transport dust into a collection container, transforming a potential harm into a useful dust transport mechanism.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

4Reliability

If the brush unit rotates rapidly to discharge heavy dust, then dust discharge completeness improves, but energy consumption increases

Engineering Contradiction:
Improvedust discharge completenessVSAvoidbrush unit energy consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system combines pneumatic air flow with mechanical brush rotation to create a synergistic dust discharge mechanism. The air flow performs the energy-intensive work of lifting and transporting dust particles, while the brush unit provides mechanical agitation at lower power consumption to loosen and discharge the dust into the air stream.

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The brush unit rotation speed is dynamically adjusted based on the type of dust being discharged. For light dust particles, the brush rotates at lower speeds, while for heavier dust, the rotation speed increases. This parameter adjustment optimizes energy consumption by matching brush power to the actual discharge requirements.

Inventive Principle:
Principle #35Parameter changes

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 maintains the robot cleaner's performance by automatically emptying the dust box and cleaning the brush unit, reducing manual intervention and preventing dust dispersion, thus ensuring efficient and continuous operation.

Implementation Method 1

dust stored in a dust box is suspended in air introduced into the dust box through a first opening

Methodology Applied
Scientific EffectAir suspension: Suspension

Implementation Method 2

dust stored in a dust box is suspended in air introduced into the dust box through a first opening formed through a robot cleaner, and is then discharged to a second opening formed through a maintenance station through the first opening of the robot cleaner

Methodology Applied
Scientific EffectAir flow transport: Advection

Implementation Method 3

The maintenance station may further include a pump unit, a suction duct provided at a suction side of the pump unit, and a discharge duct provided at a discharge side of the pump unit

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS9027199B2Robot cleaner, maintenance station, and cleaning system having the same
Publication Date: 2015.05.12 SAMSUNG ELECTRONICS CO LTD
  • US9027199B2 patent drawing
  • US9027199B2 patent drawing
  • US9027199B2 patent drawing

AI summary

In a cleaning system, dust stored in a dust box is suspended in air introduced into the dust box through a first opening formed through a robot cleaner, and is then discharged to a second opening formed through a maintenance station through the first opening of the robot cleaner.