Momentum Separator and Cyclone Layout for Unobstructed Dirt Emptying

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Solution Overview

Problem

Existing robotic surface cleaning apparatuses face challenges in efficiently emptying dirt from their dirt collection chambers without requiring dismantlement, and existing cyclonic cleaning systems may obstruct dirt outlets, hindering effective dirt collection.

Innovation Solution

A cyclonic array with cyclones oriented at an angle to the vertical and staggered or varying lengths, where dirt outlets from upper cyclones are positioned rearward of lower cyclones, and a docking station with a momentum separator and cyclonic units that treat air streams to separate dirt from clean air, allowing for efficient dirt collection and air treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple cyclones are arranged in parallel for efficient dirt collection, then dirt collection capacity is improved, but dirt outlets may obstruct each other hindering effective dirt collection

Engineering Contradiction:
Improvedirt collection capacityVSAvoiddirt outlet obstruction
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The cyclones are arranged in a staggered three-dimensional configuration rather than a simple parallel planar arrangement. Upper cyclones are positioned above lower cyclones with their dirt outlets oriented at angles, utilizing the vertical dimension and spatial staggering to ensure dirt outlets do not obstruct each other while maintaining high dirt collection capacity through multiple parallel cyclones

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If cyclones are arranged in parallel to increase cleaning efficiency, then cleaning productivity is improved, but the device complexity increases due to spatial arrangement requirements

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidspatial arrangement complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The cyclone array is segmented into multiple independent cyclone units that can be manufactured and assembled separately. Each cyclone is a discrete module with standardized components, allowing the complex multi-cyclone system to be built from simpler identical units, reducing overall manufacturing and assembly complexity while maintaining high cleaning efficiency through parallel operation

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If dirt collection chamber is designed to be emptied without dismantlement, then ease of operation is improved, but device complexity increases due to additional mechanisms required

Engineering Contradiction:
Improvedirt emptying convenienceVSAvoidemptying mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The dirt collection chamber incorporates a self-emptying mechanism that automatically expels collected dirt without requiring manual disassembly or intervention. The system uses the existing cyclone airflow and pressure differentials to propel dirt toward and out of the collection chamber through automated pathways, maintaining ease of operation while the complexity is managed through integration with the existing cyclone structure

Inventive Principle:
Principle #25Self-service

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 emptying of dirt from robotic surface cleaning apparatuses without dismantlement and ensures unobstructed dirt collection by optimizing cyclone orientation and using a multi-stage air treatment system for effective dirt separation.

Implementation Method 1

surface cleaning apparatus that use a cyclonic cleaning stage that comprises a plurality of cyclones in parallel

Methodology Applied
Scientific EffectCyclone separation: Cyclone Separation

Implementation Method 2

cyclones (which have an axis of rotation that is at an angle to the vertical)

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 3

docking station with a momentum separator and cyclonic units that treat air streams to separate dirt from clean air

Methodology Applied
Scientific EffectMomentum separation: Conservation of Momentum

Data Source

PatentUS11318483B2Air treatment apparatus
Publication Date: 2022.05.03 OMACHRON INTELLECTUAL PROPERTY INC
  • US11318483B2 patent drawing
  • US11318483B2 patent drawing
  • US11318483B2 patent drawing

AI summary

An air treatment apparatus has a momentum separator positioned in an air flow path. The momentum separator has an upper wall, a lower wall, a sidewall extending between the upper and lower walls and a momentum separator air inlet. A momentum separator air inlet is provided in an inlet portion of the sidewall. The momentum separator air inlet faces an opposed portion of the sidewall that is opposed to the inlet portion of the sidewall and the inlet portion of the sidewall comprises a side screen.