EP1045061A2 - Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trocknermaschine und Maschine, die ein solches Verfahren verwendet - Google Patents

Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trocknermaschine und Maschine, die ein solches Verfahren verwendet Download PDF

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Publication number
EP1045061A2
EP1045061A2 EP99124780A EP99124780A EP1045061A2 EP 1045061 A2 EP1045061 A2 EP 1045061A2 EP 99124780 A EP99124780 A EP 99124780A EP 99124780 A EP99124780 A EP 99124780A EP 1045061 A2 EP1045061 A2 EP 1045061A2
Authority
EP
European Patent Office
Prior art keywords
load
speed
machine
laundry
predetermined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99124780A
Other languages
English (en)
French (fr)
Other versions
EP1045061A3 (de
EP1045061B1 (de
Inventor
Costantino Mariotti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Whirlpool EMEA SpA
Original Assignee
Merloni Elettrodomestici SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merloni Elettrodomestici SpA filed Critical Merloni Elettrodomestici SpA
Publication of EP1045061A2 publication Critical patent/EP1045061A2/de
Publication of EP1045061A3 publication Critical patent/EP1045061A3/de
Application granted granted Critical
Publication of EP1045061B1 publication Critical patent/EP1045061B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Unbalance; Noise level

Definitions

  • washing and/or drying machines can include in their washing program one or more spinning cycles, i.e. phases of drum rotation gradually bringing the drum to a much higher speed than that normally foreseen during the actual washing cycles; in some types of machine, the drum can reach a speed up to 1100 rpm.
  • spinning cycles i.e. phases of drum rotation gradually bringing the drum to a much higher speed than that normally foreseen during the actual washing cycles; in some types of machine, the drum can reach a speed up to 1100 rpm.
  • the programs for handling the motor M in the various phases are codified, according to the different machine cycles, which can be selected by the user through proper control elements (e.g. electromechanical timer and/or selection keys).
  • Module D controls motor M operation - in particular through microcontroller MP and associated ROM memory - based on the signals received by the above control elements and other machine components, such as a pressure switch, control keys, a speedometer dynamo, etc.
  • the difference between the predetermined speed VR and the detected maximum speed VM indicates the over-elongation entity.
  • practical tests have indicated that within certain limits, the over-elongation is higher under very good load balance conditions; viceversa, no over-elongation or just a minimum over-elongation or the detection of a speed VM lower than the speed VR within predetermined time (40 secs) indicates an out-of-balance laundry load: as a matter of fact, it is evident how at high speeds an irregular laundry distribution in the drum may determine a braking effect.
  • the graph in Fig. 4 indicates a non ideal but still acceptable operating condition of the machine according to the present invention.
  • time T1-T2 required from speed V1 to speed V2 is lower than TR, indicating a non severe load; thus, the machine is enabled to reach 1400 rpm spin speed.
  • the graph also shows an over-elongation under threshold SS (as it can be seen the maximum speed VM is slightly over the predetermined speed VR).
  • Such a minimum over-elongation indicates an out-of-balance load; however, such an out-of-balance but non severe load condition is not critical for the machine mechanical structure, so that the motor can reach 1400 rpm spir.
  • speed (MC) operating vibrations are acceptable because they are not dangerous for the machine mechanical structure.
  • the program will then end on block 108.
  • Fig. 7 shows the block diagram of a logic circuit section controlling the machine shown in
  • the control system may be designed to incorporate a correction phase for the out-of-balance condition instead of enabling a decreased spin speed: this can be easily achieved through the program stored in the ROM memory associated with microcontroller MP; e.g. if a severe out-of-balance condition is detected, the microcontroller MP can stop the speed increase run, execute a re-balancing load step and attempt a new spinning cycle to reach the maximum 1400 rpm speed; this could take place even several times.
  • the method used to detect unbalance as described herein - based on over-elongation measurement - may also be profitably used separately from time measurement from 150 to 900 rpm.
  • other techniques are available for automatic load verification, i.e. the quantity of laundry in the washing-machine drum; reference is made e.g. to the Italian Patent Application for Industrial Invention no.
EP99124780A 1994-06-16 1995-06-16 Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trocknermaschine und Maschine, die ein solches Verfahren verwendet Expired - Lifetime EP1045061B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT94TO000496A IT1266861B1 (it) 1994-06-16 1994-06-16 Metodo di verifica delle condizioni del carico dei panni in una macchina per il lavaggio e/o l'asciugatura di biancheria, e macchina
ITTO940496 1994-06-16
EP95109302A EP0687760B1 (de) 1994-06-16 1995-06-16 Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trockner-Maschine und Maschine die ein solches Verfahren verwendet

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP95109302A Division EP0687760B1 (de) 1994-06-16 1995-06-16 Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trockner-Maschine und Maschine die ein solches Verfahren verwendet

Publications (3)

Publication Number Publication Date
EP1045061A2 true EP1045061A2 (de) 2000-10-18
EP1045061A3 EP1045061A3 (de) 2002-05-15
EP1045061B1 EP1045061B1 (de) 2004-09-29

Family

ID=11412603

Family Applications (2)

Application Number Title Priority Date Filing Date
EP95109302A Expired - Lifetime EP0687760B1 (de) 1994-06-16 1995-06-16 Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trockner-Maschine und Maschine die ein solches Verfahren verwendet
EP99124780A Expired - Lifetime EP1045061B1 (de) 1994-06-16 1995-06-16 Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trocknermaschine und Maschine, die ein solches Verfahren verwendet

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP95109302A Expired - Lifetime EP0687760B1 (de) 1994-06-16 1995-06-16 Verfahren zum Prüfen des Wäschegewichts in einer Wasch- und/oder -Trockner-Maschine und Maschine die ein solches Verfahren verwendet

Country Status (4)

Country Link
EP (2) EP0687760B1 (de)
DE (2) DE69518876T2 (de)
ES (2) ES2229615T3 (de)
IT (1) IT1266861B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493289B1 (ko) * 2002-10-10 2005-06-02 엘지전자 주식회사 드럼세탁기의 제어방법

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2242994C (en) * 1997-07-14 2008-09-16 Lg Electronics Inc. Method for detecting cloth amount in drum washing machine
DE19738310B4 (de) * 1997-09-02 2005-09-15 AEG Hausgeräte GmbH Verfahren zum Ermitteln einer Umverteilung und damit einer Änderung einer Unwucht
CN109629176B (zh) * 2018-12-11 2022-12-06 佛山市顺德海尔电器有限公司 洗涤设备的脱水转速控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416639A1 (de) * 1984-05-05 1985-11-07 Miele & Cie GmbH & Co, 4830 Gütersloh Verfahren zur steuerung des schleuderprogramms einer waschmaschine
EP0236857A2 (de) * 1986-03-03 1987-09-16 Licentia Patent-Verwaltungs-GmbH Verfahren zur Korrektur des Unwuchtgrössengrenzwertes für eine programmgesteuerte Waschmaschine
DE3812330A1 (de) * 1988-04-14 1989-10-26 Licentia Gmbh Verfahren zur messung der waescheverteilung, insbesondere bei waschmaschinen und waescheschleudern
DE4038178A1 (de) * 1990-11-30 1992-06-04 Telefunken Electronic Gmbh Verfahren zur unwuchtmessung
GB2271837A (en) * 1992-10-22 1994-04-27 Ako Werke Gmbh & Co Balancing a washing machine drum before spinning

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416639A1 (de) * 1984-05-05 1985-11-07 Miele & Cie GmbH & Co, 4830 Gütersloh Verfahren zur steuerung des schleuderprogramms einer waschmaschine
EP0236857A2 (de) * 1986-03-03 1987-09-16 Licentia Patent-Verwaltungs-GmbH Verfahren zur Korrektur des Unwuchtgrössengrenzwertes für eine programmgesteuerte Waschmaschine
DE3812330A1 (de) * 1988-04-14 1989-10-26 Licentia Gmbh Verfahren zur messung der waescheverteilung, insbesondere bei waschmaschinen und waescheschleudern
DE4038178A1 (de) * 1990-11-30 1992-06-04 Telefunken Electronic Gmbh Verfahren zur unwuchtmessung
GB2271837A (en) * 1992-10-22 1994-04-27 Ako Werke Gmbh & Co Balancing a washing machine drum before spinning

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493289B1 (ko) * 2002-10-10 2005-06-02 엘지전자 주식회사 드럼세탁기의 제어방법

Also Published As

Publication number Publication date
EP0687760A3 (de) 1996-08-21
EP1045061A3 (de) 2002-05-15
ITTO940496A1 (it) 1995-12-16
ES2229615T3 (es) 2005-04-16
EP0687760A2 (de) 1995-12-20
DE69518876D1 (de) 2000-10-26
DE69533595D1 (de) 2004-11-04
ES2151568T3 (es) 2001-01-01
EP0687760B1 (de) 2000-09-20
ITTO940496A0 (it) 1994-06-16
IT1266861B1 (it) 1997-01-21
EP1045061B1 (de) 2004-09-29
DE69518876T2 (de) 2001-02-01
DE69533595T2 (de) 2005-10-06

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