EP1525349A2 - Procede pour determiner le balourd d'un tambour de linge - Google Patents

Procede pour determiner le balourd d'un tambour de linge

Info

Publication number
EP1525349A2
EP1525349A2 EP03766140A EP03766140A EP1525349A2 EP 1525349 A2 EP1525349 A2 EP 1525349A2 EP 03766140 A EP03766140 A EP 03766140A EP 03766140 A EP03766140 A EP 03766140A EP 1525349 A2 EP1525349 A2 EP 1525349A2
Authority
EP
European Patent Office
Prior art keywords
drum
motor
voltage
speed
current
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
EP03766140A
Other languages
German (de)
English (en)
Other versions
EP1525349B1 (fr
Inventor
Stefan Zeh
Martin Weinmann
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=29265417&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1525349(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP1525349A2 publication Critical patent/EP1525349A2/fr
Application granted granted Critical
Publication of EP1525349B1 publication Critical patent/EP1525349B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • the common method for evaluating the unbalance of a loaded washing machine drum is therefore to measure the speed fluctuation caused by the unbalance in the course of a revolution with a soft speed control to a relatively low drum speed. It is disadvantageous, however, that with a high drum filling due to a correspondingly increased mass moment of inertia and with a higher nominal speed, those occurring around the nominal speed
  • the invention is therefore based on the technical problem of specifying a method that promises meaningful and reproducible measured values for the drum imbalance directly before the transition from high to highest drum speeds, despite the basic problems shown.
  • a washing machine 11 is equipped for treating laundry 12 in its tub with a perforated drum 13, which in this case can be set in rotation by a rotating field motor 14 about an approximately horizontal axis 15.
  • the rotating field for this is impressed on the motor 14 by the alternating flow of typically three stator winding systems 16, ' which are each connected to a half-bridge circuit 17 for switching and reversing the polarity of a stator flow.
  • the entirety of the bridge circuits 17 therefore acts as an inverter or inverter 18, the switching paths of which are clocked in a cyclical sequence from a higher-level controller 19 for specifying the direction of rotation and speed of the drum drive motor 14.
  • Control 19 functions as a speed controller if the actual speed 20 is fed back to it in order to compare it with a desired speed 21 specified manually or from a washing program.
  • Inverters 18 take place from the AC household network 22 via a converter 23 with a rectifier circuit, which is buffered towards the load by the large capacitance 25 of a so-called DC intermediate circuit 26.
  • Drum speed (in particular for more effective dehumidification in the high-speed spin cycle) is permitted or prevented by the controller 19.
  • the power measurement takes place according to the present invention, however, not at the connection of the consumer to the AC network 22, but in the DC supply of the inverter 18 behind the DC link 26.
  • the DC 27 and the DC 28 for supplying the motor 14 via the inverter 18 becomes the vectorial Product formed and switched to the controller 19 as a time-dependent fluctuating power 29.
  • This measurement leaves perform even at a very high drum speed 13 and correspondingly high-frequency fluctuating power consumption in a trouble-free and reproducible manner because interfering network influences are reliably kept away from vectorial product formation in the power measurement circuit 30 by the converter 23 and the low-pass effect of the DC link 26.
  • DC output voltage 27 leads and therefore the time-dependent power consumption dP / dt of the washing machine motor 14 is proportional to the current consumption 28 over all three output phases of the inverter 18.
  • a further development according to the invention has proven to be particularly advantageous in that the current measurement is carried out behind the DC link 26 to determine the unbalance at high drum speeds when the motor voltage 27 is temporarily raised, preferably temporarily switched to the greatest value (i.e. to the mains voltage) . Because at higher motor voltages and thus smaller slip, the characteristic curve of the torque and thus the electrical power P or the motor current 28 drops more steeply over the speed; and the steeper the higher the applied motor voltage 27. If the rotational speed fluctuates as a result of imbalance, the resulting fluctuation in the current 28 absorbed by the drive motor 14 of the drum 13 increases the higher the instantaneously applied motor voltage 27 is.
  • the temporary increase in voltage at high speed leads to a clear, reproducibly detectable current fluctuation di / dt despite only a small - but perhaps even more constructively critical for a further increase in speed - imbalance in the drum loading.
  • the given unbalance due to uneven laundry distribution should be determined from the current spin speed 12 checked again in the drum 13 and, if necessary, the spinning program can be terminated if excessive bearing forces threaten to occur.
  • the speed fluctuation in the course of one revolution of the drum 13 is barely measurable and the absorption of the periodic fluctuation of the alternating current power dP / dt consumed by the drum drive 14 from the house network 22 from the network frequency and other network interferences is dominantly superimposed, according to the invention the speed-dependent fluctuation in the current consumption di / dt of the washing machine motor 14 from the DC intermediate circuit 26 before it is fed into the inverter 18 for generating the rotating field in

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Testing Of Balance (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Centrifugal Separators (AREA)
  • Drying Of Solid Materials (AREA)
EP03766140A 2002-07-26 2003-07-09 Procede pour determiner le balourd d'un tambour de linge Expired - Lifetime EP1525349B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10234053 2002-07-26
DE10234053A DE10234053C1 (de) 2002-07-26 2002-07-26 Verfahren zum Bestimmen der Unwucht einer Wäschetrommel
PCT/EP2003/007388 WO2004013401A2 (fr) 2002-07-26 2003-07-09 Procede pour determiner le balourd d'un tambour de linge

Publications (2)

Publication Number Publication Date
EP1525349A2 true EP1525349A2 (fr) 2005-04-27
EP1525349B1 EP1525349B1 (fr) 2010-12-01

Family

ID=29265417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03766140A Expired - Lifetime EP1525349B1 (fr) 2002-07-26 2003-07-09 Procede pour determiner le balourd d'un tambour de linge

Country Status (7)

Country Link
US (1) US6973392B2 (fr)
EP (1) EP1525349B1 (fr)
AT (1) ATE490362T1 (fr)
AU (1) AU2003253042A1 (fr)
CA (1) CA2492551C (fr)
DE (2) DE10234053C1 (fr)
WO (1) WO2004013401A2 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7905122B2 (en) * 2003-04-28 2011-03-15 Nidec Motor Corporation Method and system for determining a washing machine load unbalance
PL1636410T3 (pl) * 2003-06-11 2013-02-28 Askoll Holding Srl Sposób wykrywania stanów niewyważenia wirującego ładunku wprawianego w ruch przez silnik synchroniczny i kontrolowania takiego silnika
DE102004053216B3 (de) * 2004-06-18 2006-02-09 Diehl Ako Stiftung & Co. Kg Vorrichtung zur Erfassung einer Schwingbewegung einer Wäschetrommel
US8042211B2 (en) * 2005-08-16 2011-10-25 Whirlpool Corporation Method of detecting an off-balance condition of a clothes load in a washing machine
DE102006017530A1 (de) * 2006-04-13 2007-10-18 BSH Bosch und Siemens Hausgeräte GmbH Maschine zum Waschen und/oder Trocknen von Wäsche sowie Verfahren zum Erfassen von Unwuchtparametern
US20080156094A1 (en) * 2006-12-27 2008-07-03 General Electric Company Systems and methods for detecting out-of-balance conditions in electronically controlled motors
DE102009001271A1 (de) * 2009-03-02 2010-09-09 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Ermitteln der Beladung und/oder der Unwucht einer Wäschetrommel einer Waschmaschine und entsprechende Schaltungsanordnung
US8291764B2 (en) * 2009-08-14 2012-10-23 Lenz Michael A W Method and apparatus for in situ unbalance and corrective balance determination for a non-vertical axis rotating assembly
DE102009028810A1 (de) 2009-08-21 2011-02-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Ermitteln einer Unwucht bei einer Wäschetrommel einer Waschmaschine im Schleuderbetrieb, Antriebsvorrichtung und Waschmaschine mit einer Antriebsvorrichtung
DE102010027158B4 (de) 2010-07-14 2012-06-06 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsgerät
DE102010042492A1 (de) 2010-10-15 2012-04-19 BSH Bosch und Siemens Hausgeräte GmbH Antriebsvorrichtung zum Antreiben einer Komponente eines Hausgeräts, Hausgerät und Verfahren zum Betreiben eines Hausgeräts
DE102012021747B4 (de) 2012-06-26 2021-01-28 Diehl Ako Stiftung & Co. Kg Verfahren und Vorrichtung zum Erkennen einer Umwucht in einem Wäschebehandlungsgerät
JP6634602B2 (ja) * 2016-05-19 2020-01-22 パナソニックＩｐマネジメント株式会社 洗濯機
JP6681541B2 (ja) * 2016-05-27 2020-04-15 パナソニックＩｐマネジメント株式会社 洗濯機
JP6681542B2 (ja) * 2016-05-27 2020-04-15 パナソニックＩｐマネジメント株式会社 洗濯機

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IT1038355B (it) * 1975-05-22 1979-11-20 Ire Spa Procedimento e macchina automatica per lavare e centrifugare la biancheria
AT387462B (de) * 1987-01-15 1989-01-25 Austria Antriebstech Einrichtung zur unwuchterkennung
US4765161A (en) 1987-10-19 1988-08-23 American Laundry Machinery, Inc. Out-of-balance control for laundry machines
DE3822924C1 (fr) 1988-07-07 1989-11-23 Miele & Cie Gmbh & Co, 4830 Guetersloh, De
US5070565A (en) * 1989-04-17 1991-12-10 Emerson Electric Co. Unbalanced load detection system and method for a household appliance
JPH0391511A (ja) 1989-09-04 1991-04-17 Mitsubishi Petrochem Co Ltd α―オレフイン重合用触媒及びその使用
DE4101341A1 (de) * 1991-01-18 1992-07-23 Ako Werke Gmbh & Co Frequenzumrichter fuer einen asynchron-drehstrommotor
JP3091511B2 (ja) 1991-04-12 2000-09-25 株式会社東芝 洗濯機
DE4208989A1 (de) * 1992-03-20 1993-09-23 Philips Patentverwaltung Verfahren zur detektion und kompensation einer unwucht bei einem durch einen motor angetriebenen rotor
DE4431846C2 (de) * 1994-09-07 2001-02-15 Diehl Ako Stiftung Gmbh & Co Verfahren zum beladungsabhängigen Steuern und/oder Regeln einer Waschmaschine oder eines Wäschetrockners
JPH08122192A (ja) * 1994-10-21 1996-05-17 Mitsubishi Electric Corp 誘導電動機の負荷状態検出装置及び方法
KR100314179B1 (ko) * 1999-03-26 2001-11-15 윤종용 세탁기의 불균형 감지장치 및 그 방법
DE19918331A1 (de) * 1999-04-22 2000-10-26 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zur Detektion von Unwuchten bei einem durch einen bürstenlosen Elektromotor angetriebenen Rotor
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US6640372B2 (en) * 2000-06-26 2003-11-04 Whirlpool Corporation Method and apparatus for detecting load unbalance in an appliance
US6715175B2 (en) * 2000-06-26 2004-04-06 Whirlpool Corporation Load unbalanced prediction method and apparatus in an appliance
JP4465129B2 (ja) * 2000-07-14 2010-05-19 パナソニック株式会社 ブラシレスモータの駆動装置と駆動方法
KR100425851B1 (ko) * 2001-05-10 2004-04-03 엘지산전 주식회사 하나의 전류센서를 이용한 삼상 교류전류 측정 방법
US6594841B2 (en) * 2001-09-21 2003-07-22 Maytag Corporation Unbalance detection system for a washing machine

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Title
See references of WO2004013401A3 *

Also Published As

Publication number Publication date
EP1525349B1 (fr) 2010-12-01
DE10234053C1 (de) 2003-11-20
AU2003253042A1 (en) 2004-02-23
US20050143940A1 (en) 2005-06-30
WO2004013401A3 (fr) 2004-04-29
CA2492551C (fr) 2007-11-13
US6973392B2 (en) 2005-12-06
ATE490362T1 (de) 2010-12-15
DE50313295D1 (de) 2011-01-13
WO2004013401A2 (fr) 2004-02-12
CA2492551A1 (fr) 2004-02-12

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