Download - Project «Vacuum Cleaner»

Project Project ««Vacuum CleanerVacuum Cleaner»»

SUBMITTED TO THE SANYO Electric Co. Ltd.

PRESENTED BY Institute of Innovative Design

Terms:Beginning: January 01 2003Completion: March 31 2003

FINAL PRESENTATION

Institute of Innovative Design

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Vacuum cleaner SC-JT8DVacuum cleaner SC-JT8D

Object of Object of AAnalysisnalysisInstitute of Innovative Design

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To capture and to move dust To capture and to move dust by airflow.by airflow.

Main FunctionMain FunctionInstitute of Innovative Design

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Main Main GoalGoal

To develop the design of cleaning system that To develop the design of cleaning system that drastically reduce the distracting noise from 62 dB(A) drastically reduce the distracting noise from 62 dB(A) to 49 db(A) or less by using TRIZ technology.to 49 db(A) or less by using TRIZ technology.

Project GoalsProject GoalsInstitute of Innovative Design

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Forecasting - is not present any Forecasting - is not present any restrictions, down to replacement of the restrictions, down to replacement of the physical principle.physical principle.

Desirable level of results of the project - Desirable level of results of the project - a degree of allowable changes of object:a degree of allowable changes of object:

Level E.Level E.

RestrictionsRestrictionsInstitute of Innovative Design

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Supporting InformationGathering

Supporting information

Analysis of the ObjectFunctional and Flow models,

Evolution Trends, Key Disadvantages, Contradictions

Problem SolutionEngineering Solutions

Data GatheringBackground information

Function BasedInformation Gathering

Function orientedinformation

CONCEPTUAL STAGEINFORMATION STAGE

ANALYTICAL STAGE

Concept substantiationConcepts,

Ideas for Further Development

Problem StatementTrimming problems,

Feature transfer problems, Key problems

Innovative Technology of Innovative Technology of DesignDesign


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IINFORMATIONNFORMATION SSTAGETAGE


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Information replyInformation requestLegend:

Conceptual stage

Information stageInfo 2

Scientific (basic) information

Info 1 Source

information

Info 3 Functional information

Info 4 Support

information

Analytical stageKey problemsKey problems ConceptsConcepts

Processing InformationProcessing InformationInstitute of Innovative Design

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INFORMATION

Info 4SUPPORTING INFORMATION

Info 3FUNCTIONAL INFORMATION

Info 1INFORMATION

SOURCE

INFORMATION ON SPECIFIC CONCEPTS

SCIENTIFIC BASIS, CALCULATIONS

REFERENCES

LEADING AREAS OF ENGINEERING ENGINEERING DEVELOPMENTS AND THEIR COMPONENTS (EQUIPMENT, MATERIALS, ETC. I.E. DATA FOR FORMULATION OF FUNCTIONS) RESOURCES FOR STATED KEY PROBLEMS SOLVING

BASIC SCIENTIFIC PRINCIPLES OF OBJECT ACTION (PHYSICAL, CHEMICAL, GEOMETRICAL, BIOLOGICAL) OBJECT EVOLUTION PARAMETERS CHARACTE- RIZING THE OBJECT AND ITS COMPONENTS

INITIAL INFORMATION FROM CUSTOMER (DIAGRAMS, SAMPLES, ETC.)

DATA OF COMPETITORS PRODUCTION

SCIENTIFIC (BASIC)

INFORMATION

Info 2

Information SearchInformation Search Types of Information UsedTypes of Information Used


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Table of Information SearchTable of Information Search FragmentFragment

Search direction

Leading fields of science and technology

Principle, method, device

Possible application to the project

1. Technical function: To create airflow Generalized technical function:

To move substance

1.1. Problem: High velocity of airflow forms turbulent motion. It is the cause of a noise.

1.1.1. Absorption sound by substance

FansCompressorsPumps

Mufflers To install muffler in body of vacuum cleaner. To make body double with soundproof material inside (or use vacuum).

2. Engineering function: To create airflow Generalized engineering function:

To move substance

2.1. Problem: Movers of gas generate discrete noise at the creation of movement of substance.

2.1.2. Extinguishing of sound by antisound

Electronic engineering System of active noise control (electronic circuit)

To apply active noise control system in order to reduce noise.

Acoustics Helmholtz’s resonator To apply Helmholtz’s resonators to extinguishing a sound with different frequencies.


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Analytical StageAnalytical Stage


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Analytical Stage StructureAnalytical Stage StructureInstitute of Innovative Design

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STATEMENT OF KEY PROBLEMS

GENETIC ANALYSIS

COMPONENT - STRUCTURAL

ANALYSIS

FUNCTIONAL - PARAMETRIC

ANALYSIS

PARAMETRIC ANALYSIS

DIAGNOSTIC ANALYSIS

INTEGRATION OF ALTERNATIVE SYSTEMS

-CAUSE-AND-EFFECT CHAINS ANALYSIS

Problems

Undesirable effects

Denotations:

STATEMENT OF PROBLEMS DIRECTION OF

SOLUTION OVERMODELING

Supersystem:

System:

Subsystem:

Ambient air Electric current

Vacuum cleaner

Dust

User

Tube Body Fan motorFloor brush Dust collector Power cord

Floor brush case

Brush

Intake air windows

Rollers

Joint connector

Turbo-brush

Bearings of turbo-brush

Sucking canal of the pipe

Handle

Joint

Sucking central hose

Exhaust outside hose

Control wire

Connector

Exhaust canal of the pipe

Control panel

Dust collector basket

Power cord reel

Absorption filters of exhaust air

Exhaust vents of the wheel

Filter of the motor protection

Control unit

Rotor blades

Fan stator

Stator of electric motor

Rotor of electric motor

Ball bearings

Collector

Rotor

Case of electric motor

Exhaust canal

Electric brush

Plug

Electric wire

Braid

Holder

Sack

Fan case

Surface (floor)

Component Structural Component Structural AnalysisAnalysis


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Function AnalysisFunction AnalysisFragment of function tableFragment of function table


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Element Function Rank

Turbo brush To move dust B

To generate discrete noise H

Sucking central hose To direct sucking airflow A1

To transmit aerodynamic noise H

To transmit discrete noise H

Body To direct exhaust airflow A3

To hold exhaust canal A4

To hold power cord reel A2

To direct sucking airflow A1

To transmit aerodynamic noise H

To transmit mechanical noise H

Dust collector To collect dust B

To decelerate sucking airflow H

Rotor blades To create discrete noise H

To create exhaust airflow A3

Only 4 elements provide performance of the main useful function (MUF):

Sucking airflow Brush Turbo-brush Dust collector

Conclusions to Conclusions to FunctionFunction AnalysisAnalysis


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Auxiliary function - 50%

Harmful function - 48%

Basic function - 2%

Statistics: Amount of elements 39 Basic function 4 Useful function 104 Harmful function 94

Function Parametric Function Parametric AnalysisAnalysis

StatisticsStatistics


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28%

Results of Trimming ProcessResults of Trimming Process

The solution of trimming problems will allow to reduce noise without change physical The solution of trimming problems will allow to reduce noise without change physical principle of working of vacuum cleaner.principle of working of vacuum cleaner.

Element for trimming Trimming problems

Exhaust airflow 1. How to cool elements of vacuum cleaner without exhaust airflow?

Rotor of electric motor 2. How to rotate a rotor without rotor of electric motor?

Rotor blades 3. How to move sucking airflow without rotor blades?

Collector 4. How to rotate a rotor of electric motor without collector?

Ball bearings 5. How to hold rotor of electric motor without ball bearings?


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Cause-Cause-And-And-Effect Chains Effect Chains AnalysisAnalysis


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Mechanical noise

Release of air into atmosphere

Friction of airflow about surfaces

NOISE

Inhomogeneity of airflow

Acceleration of airflow

Change of airflow direction inside elements of cleaner

Creation of turbulent airflow

Capture and transfer dust by air

Creation of pressure gradient

Existing operation principal of cleaner

Blades move air

Internal friction of airflow

Viscosityof air > 0

Rotor rotation

Rotation of electric motor rotor

Operation principle of electric motor

Rigid junction of vibration sources

with body

Transmission of vibration

by body

Interaction between electric motor rotor and stator

Creation of vibration

Ball bearings rotation

Deceleration of airflow

Blades rotation in the air

Turbo-brush rotationDiscrete noise

Aerodynamic noise

Suction of air from atmosphere


IID Statement of key Statement of key problemsproblems

Key problem Concepts solving key problems

1. How to muffle noise in the dust airflow? 1

2. How to reduce a discrete component of noise? 2

3. How to provide rigid junction of fan-motor with body, which not transmit vibration from fan-motor?

3

4 How to hold rotor of electric motor without ball bearings? 4

5. How to rotate rotor of electric motor without collector? 6

6. How to move discrete noise into ultra sound region of spectrum? 5

7 . How to rotate rotor without rotor of electric motor? 6

8. How to move sucking airflow without rotor blades? 7,8

9. How to cool elements of vacuum cleaner without exhaust airflow? 9

10. How to eliminate suction of air from atmosphere and release of air into atmosphere?

9

11. How to extract from a carpet and to transfer dust by using electric field in weak airflow of low noise vacuum cleaner?

10

12. How to extract from a carpet, to transfer and collect a dust by using of electric field?

11


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Classes of ProblemsClasses of Problems

KEY PROBLEMSKEY PROBLEMS

Direction 1NOISE MUFFLING

WITHOUT CHANGE OF CENTRIFUGAL FAN

_____________

3 PROBLEMS

CHANGE OF CENTRIFUGAL

FAN_____________

5 PROBLEMS

CHANGE OF DESIGN OF VACUUM

CLEANER_____________

4 PROBLEMS

Direction 2 Direction 3


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Conceptual StageConceptual Stage


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Conceptual direction 1 Conceptual direction 1 Institute of Innovative Design

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NOISE MUFFLING WITHOUT CHANGE OF CENTRIFUGAL FAN

The purpose of this direction: reduction of noise level without change of fan-motor.

In concepts of the given direction fan-motor does not change, reduction of noise level is achieved by design methods with the minimal changes in system.

Concept 1 (A). Suppression of Concept 1 (A). Suppression of noise by the active muffler noise by the active muffler ((ННelmgoltz’s resonator)elmgoltz’s resonator)

1. Sucking pipeline. 2. Handle. 3. Throat of Нelmgoltz’s resonator. 4. Нelmgoltz’s resonator. 5. System of fine tuning of Нelmgoltz’s resonator. 6. Neutralizing electrode. 7. High voltage source. 8. Control wires.

1

2 3 4 5

6 " - "

" + "

7

8


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Concept 1 (B). Suppression of Concept 1 (B). Suppression of noise by the active muffler noise by the active muffler

((ННelmgoltz’s resonator)elmgoltz’s resonator)

1. Case of fan-motor. 2. Annular airline. 3. Resonators. 4. Fan-motor.

À

À À - À 1 2 3 4


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Concept 2. Reduction of the Concept 2. Reduction of the discrete component of noise by discrete component of noise by rotary shield.rotary shield.

1. Fan-motor. 2. Rotor. 3. Blades. 4. Case 5. Axis. 6. Support washer. 7. Grid..

À

À 1

2

3 4

5 6

7

À - À

R O T A T E


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Concept 3. Rigid fastening of Concept 3. Rigid fastening of fan-motor with body of vacuum fan-motor with body of vacuum cleaner does not transmitting cleaner does not transmitting vibration.vibration.

1. Fan-motor. 2. Electromagnet. 3. Internal holder of fastening. 4. External holder of fastening. 5. Elastic cushions. 6. Condensing corrugation.

e l e c t r i c c u r r e n t À

À

1

2

3 4 5 6 À - À


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Conceptual direction 2Conceptual direction 2Institute of Innovative Design

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NOISE EXTINGUISHING WITH CHANGE EXTINGUISHING WITH CHANGE OFOF FANFAN MOTOR.MOTOR.

The purpose of this direction: reduction of noise level with change of fan-motor.

In concepts of this direction reduction of noise is associated with the change of fan-motor.

Concept 4. Bearings of rotor of Concept 4. Bearings of rotor of electromotor do not creating electromotor do not creating

vibration.vibration.

1. External ring of the thrust bearing. 2. Internal ring of the thrust bearing. 3. Constant magnet of the thrust bearing. 4. Constant magnets of the radial bearing. 5. Ring linings. 6. Shaft. 7. Magnetic liquid.

N S

S

N

N

S

S

N S

N

N

S

N S

S

N

1 2

3 4 5

6

7


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Concept 5. Application of Concept 5. Application of ultrasonic siren increases ultrasonic siren increases sucking ability of the fan.sucking ability of the fan.

1. Rotor. 2. Admission stator. 3. Outlet stator. 4. Case.

1

2

3 4

À

À

R O T A T I O N


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Concept 6. Rotor rotation of the Concept 6. Rotor rotation of the fan by stator of electromotor.fan by stator of electromotor.

1. Case. 2. Exhaust windows. 3. Pumping part of fan rotor. 4. Motor part of fan rotor. 5. Stator of fan. 6. Stator of electromotor. 7. Heat pipes. 8. Axis.

R O T A T I O N

À

À

A I R F L O W

À - À 1 2

3 4 5

6

7

8


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Concept 7. Bladeless disk-Concept 7. Bladeless disk-shaped fan.shaped fan.

1. Case. 2. Disks. 3. Joining grid. 4. Stator of the fan. 5. Shaft of electromotor.1 2

3

4

5

A I R F L O W

R O T A T I O N


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Concept 8. Ejection vacuum Concept 8. Ejection vacuum cleaner.cleaner.

1. Nozzle. 2. Dust collection room. 3. Ejector. 4. Gas-cylinder. 5. Compressor-motor. 6. Control unit.. 7. Air filter. 8. Airways of high pressure.

1

2 3

4 5

6 7 8


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Conceptual direction 3Conceptual direction 3 Institute of Innovative Design

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CHANGE OF DESIGN OF VACUUM CLEANER

The purpose of the given direction: reduction of noise level associated with change of a design of vacuum cleaner.

In concepts of the given direction reduction of noise level is achieved by change of design of a vacuum cleaner.

It is offered to change design not changing principle of operation in order to reduce noise of vacuum cleaner. Vacuum cleaner operates without release of air in environmental atmosphere. Air circulates inside the system (a body of vacuum cleaner - an airway - a floor brush - an airway – the body).

Concept 9. Vacuum cleaner not Concept 9. Vacuum cleaner not sucking and not exhausting sucking and not exhausting

ambient air.ambient air. Institute of Innovative Design

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Concept 9 (A). Vacuum cleaner Concept 9 (A). Vacuum cleaner not sucking and not exhausting not sucking and not exhausting

air with active system of cooling.air with active system of cooling.

1. Body. 2. Radiator. 3. Thermomechanical converter. 4. Canal of air return. 5. Fan-motor. 6. Dust collector. 7. Power cord reel. 8. Feeding contour of airway. 9. Sucking contour of airway. 10. Floor brush.

12

3

4

68910

HEAT

5 7


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Concept 9 (B). Vacuum cleaner Concept 9 (B). Vacuum cleaner not sucking and not exhausting not sucking and not exhausting

air with active system of cooling.air with active system of cooling.

1. Body. 2. Peltier elements. 3. Cooling fan. 4. Canal of air return. 5. Fan-motor. 6. Dust collector. 7. Temperature transmitter. 8. Control circuit. 9. Power cord reel. 10. Feeding contour of airway. 11. Sucking contour of airway. 12. Floor brush.

12

3

4

6101112

HEAT

5 9

7

8


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Elimination of potential Elimination of potential problemsproblems..

1. Sucking pipeline. 2. Corona-forming electrode. 3. Electroconductive dust collector. 4. High voltage sourse.

1 2 3

4 A I R F L O W + D U S T

D U S T

" - " E L E C T R I C C U R R E N T A I R F L O W


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Anew appeared resourceAnew appeared resource..

1. Case. 2. Flexible connector. 3. External sealing cuffs. 4. Internal sealing cuffs. 5. Windows of air return. 6. Sucking air window.

1

5 6

3 4

À À

À - À 2


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Concept 10Concept 10.. Electrostatic vacuum Electrostatic vacuum cleaner.cleaner.

1. Body of a vacuum cleaner. 2. Airway. 3. Wire of the high voltage. 4. The case of floor brush. 5. Corona-forming electrode. 6. Sucking cavity.

3

A I R F L O W + D U S T

C L E A R E D S U R F A C E + D U S T

A I R F L O W

2 1

4 5 6


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Concept 11. Electrostatic Concept 11. Electrostatic cleaner.cleaner.

1. The case. 2. Rollers. 3. Brush neutralizer. 4. An axis. 5. A source of a high voltage. 6. Corona-forming electrode. 7. Unipolar electret collector of dust.

G R O U N D

H I G H V O L T A G E E L E C T R I C C U R R E N T

À

À

À - À

1 2

3 4

5

6 7

C L E A R E D S U R F A C E + D U S T


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Ranking of conceptsRanking of concepts


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Results of ranking of conceptsResults of ranking of concepts

5 5 5 5 5

9

3 3

15

34

40

0

5

10

15

20

25

30

35

40

Rank

1 2 3 4 5 6 7 8 9 10 11

Concepts


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CONCLUSIONSCONCLUSIONS

1. The three conceptual directions are detected and eleven 1. The three conceptual directions are detected and eleven concepts of perfecting of vacuum cleaner designed as a result concepts of perfecting of vacuum cleaner designed as a result of working on project. Concepts allow to reduce noise at of working on project. Concepts allow to reduce noise at operation of a vacuum cleaner according to requirements of operation of a vacuum cleaner according to requirements of the Customer.the Customer.

2. Ranking of designed concepts and multicriteria quantitative 2. Ranking of designed concepts and multicriteria quantitative estimation of their efficiency is made.estimation of their efficiency is made.

3. The most perspective direction is Conceptual direction 3: 3. The most perspective direction is Conceptual direction 3: Change of design of vacuum cleaner. This direction ensures Change of design of vacuum cleaner. This direction ensures maximal effect according to the purpose of the project.maximal effect according to the purpose of the project.

4. The most perspective concept with maximal effect on the 4. The most perspective concept with maximal effect on the purpose of the project is Concept 11 Electrostatic cleaner.purpose of the project is Concept 11 Electrostatic cleaner.


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Download - Project «Vacuum Cleaner»

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