EP1154064B1 - Verfahren zum Begrenzen der Unwucht in einer Wäschewaschmaschine - Google Patents

Verfahren zum Begrenzen der Unwucht in einer Wäschewaschmaschine Download PDF

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Publication number
EP1154064B1
EP1154064B1 EP01104871A EP01104871A EP1154064B1 EP 1154064 B1 EP1154064 B1 EP 1154064B1 EP 01104871 A EP01104871 A EP 01104871A EP 01104871 A EP01104871 A EP 01104871A EP 1154064 B1 EP1154064 B1 EP 1154064B1
Authority
EP
European Patent Office
Prior art keywords
sensors
washing unit
displacements
imbalance
rotary axis
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.)
Expired - Lifetime
Application number
EP01104871A
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English (en)
French (fr)
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EP1154064B2 (de
EP1154064A2 (de
EP1154064A3 (de
Inventor
Reinhold c/o Whirlpool Europe s.r.l. Pöhler
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Whirlpool Corp
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Whirlpool Corp
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Publication date
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Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Publication of EP1154064A2 publication Critical patent/EP1154064A2/de
Publication of EP1154064A3 publication Critical patent/EP1154064A3/de
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Publication of EP1154064B1 publication Critical patent/EP1154064B1/de
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    • 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
    • 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

  • the invention concerns a method for limiting the imbalance of a washing unit of a clothes washer that has a laundry drum rotatably mounted in a tub of a clothes washer and is suspended to permit oscillation with springs, weights for inertia, vibration dampers and a drive motor in the machine housing.
  • Several sensors distributed on the perimeter of the tub detect the displacements due to imbalance in the spin cycle in relation to the machine housing and independently undertake compensatory measures.
  • the washing unit suspended in the machine housing to permit oscillation allows clothes washers to spin imbalanced laundry loads by using the detected imbalance to influence the spin cycle and protect the washing unit from mechanical damage and overloading.
  • vibration systems that are not parallel to the rotary axis can generate dominant displacements of the washing unit that not only prevent the efficient spinning of laundry but also can damage the washing unit despite the normal, prior-art imbalance system.
  • different displacements arise perpendicular to the rotary axis that can also be of varying size in the lengthwise direction of the rotary axis.
  • the displacement can be parallel to the rotary axis and phase shifted at both ends of the laundry drum, i.e., partially to completely reversed. Such irregularities arise in particular when the laundry drum holds just individual or a few pieces of laundry.
  • the problem of the invention is to create a method for limiting all arising imbalances of a clothes washer with a washing unit of the initially-cited kind by changing the spin cycle to prevent damage and the machine parts from overloading.
  • sensors are provided that detect the displacements perpendicular and/or parallel to the rotary axis of the laundry drum and phase shifts between displacements.
  • Control and/or regulating parameters can be supplied to the spin cycle depending on the detected displacements and phase shifts as well as the speed of the laundry drum or the drive motor.
  • This embodiment of the invention has a path-limiting and speed-limiting system that describes the mechanical load of the washing unit caused by the actual imbalance. You only need to determine the measuring point with the largest displacement path upon a change in the spin cycle in relation to the rotational speed, i.e. rotational frequency, to influence the spin cycle with the control and/or regulating parameters.
  • the displacement paths to be measured are larger, and less sensitive sensors can be used. This is also the case when the sensors are at a great distance from the rotary axis, preferably on the perimeter of the washing unit and/or diametrically opposed to each other.
  • the direction of the displacements caused by an imbalance can be more precisely determined by also measuring the phase position of the detected displacement paths and deriving the displacement of the washing unit in the axial direction of the washing unit from the relationship between the detected displacement paths perpendicular to the rotary access and the phase shifts between them; this allows the control and/or regulating parameters for the spin cycle to be determined.
  • the device can be simplified when one sensor measures the displacement path perpendicular to the rotary axis, while the other sensor measures the displacement path parallel to the rotary axis.
  • Acceleration sensors, optical and/or electromechanical position sensors can be advantageously used.
  • a tub 2 that contains a laundry drum 12 is arranged in a machine housing 1.
  • Weights providing inertia 3 designed as ring weights are on the tub 2.
  • the laundry drum 12 is rotatably mounted in the rear mount 11 that is in the rear of the machine housing 1.
  • the rear mount 11 and the electric motor serving as the drive motor 5 coupled via a belt 13 to the belt pulley 9 of the rotary axis 8 act as weights providing inertia.
  • the laundry drum 2 is loaded with laundry 10 from the door 4 in the front of housing 1.
  • the door 4 is a component of the machine housing 1.
  • the tub 2, the laundry drum 12 and the inertia-providing weight form a washing unit WE together with the springs 7 and the vibration dampers 6 that is suspended in the machine housing 1 so as to permit oscillation; it can be displaced both radially and axially in relation to the rotary axis 8 depending on the load of the laundry drum 12.
  • the washing drum 12 is approximately evenly loaded with laundry 10
  • the laundry 10 forms a kind of laundry ring as illustrated in Fig. 1 and 2.
  • this ideal distribution of laundry seldom occurs.
  • loads are small, there is an uneven distribution in reference to the rotary axis 8 that leads to imbalances.
  • the imbalance can arise in the front, middle, and rear of the laundry drum 12 and assume one or more positions that may be diametrically opposed to each other.
  • the size of the radial displacement along the rotary axis 8 can vary. It can be an axially parallel, dominant displacement, and the front and rear of the rotary axis 8 can have equal or unequal displacements with a phase shift.
  • These displacements that are perpendicular and parallel to the rotary axis 8 are detected by sensors 14 as shown in Fig. 1 and 2 on the front and rear of the washing unit WE placed diametrically opposed across the periphery of the washing unit WE.
  • the displacement paths are the largest here so that insensitive sensors 14 can be used.
  • the axial displacement paths of the washing unit WE are detected with two sensors 14, and the higher displacement value and speed of the laundry drum 12 or drive motor 5 are used to change the spin cycle.
  • a characteristic can be stipulated using the measured imbalance and/or phase shift along with a speed of the laundry drum or the electronic motor to reliably prevent overloading the washing unit in the spin cycle independent of the load in the laundry drum 12 and the arising imbalance.

Claims (7)

  1. Verfahren zum Begrenzen der Unwucht einer Wascheinheit (WE) einer Waschmaschine, die eine Wäschetrommel (12) aufweist, welche drehbar in einer Wanne (2) befestigt und in dem Maschinengehäuse (1) aufgehängt ist, um die Oszillation mit Federn (7), Masseträgheit zur Verfügung stellenden Gewichten (3), Vibrationsdämpfern (6) sowie einem Antriebsmotor (5) zu ermöglichen, wobei verschiedene Sensoren (14) am Umfang der Wanne (2) verteilt die Verschiebungen aufgrund der Unwucht in dem Drehkreis detektieren und diesbezügliche Gegenmaßnahmen unternehmen, um die entstehenden Verlagerungen und Kräfte zu begrenzen,
    dadurch gekennzeichnet, dass
    die Sensoren (14) die Verschiebungen sowie die Phasenverschiebungen zwischen den Verschiebungen senkrecht und/oder parallel zur Rotationsachse (8) der Wäschetrommel (12) detektieren und
    Kontroll- und/oder Regulierungs-Parameter für den Drehkreis abhängig von den detektierten Verschiebungen und Phasenverschiebungen sowie der Geschwindigkeit der Wäschetrommel (12) und des Antriebsmotors (5) berechnet werden.
  2. Verfahren gemäß Anspruch 1,
    dadurch gekennzeichnet, dass
    die Geschwindigkeit der Wäschetrommel (12) durch die festgelegte Beziehung mit den Verschiebungen und/oder Phasenverschiebungen begrenzt ist.
  3. Verfahren gemäß Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass
    Sensoren (14), vorzugsweise einer an der Vorderseite und einer an der Rückseite der Wascheinheit (WE), wenn in Längsrichtung der Rotationsachse (8) gesehen, vorliegen.
  4. Verfahren gemäß einem der Ansprüche 1 bis 3,
    dadurch gekennzeichnet, dass
    die Verschiebung der Wascheinheit (WE) in Axialrichtung der Wascheinheit (WE) von der Beziehung zwischen den detektierten Verschiebungs-Verlagerungen senkrecht zur Rotationsachse (8) und den Phasenverschiebungen zwischen diesen hergeleitet werden können und Kontroll- und/oder Regulierungs-Parameter für den Drehkreis von diesem berechnet werden können.
  5. Verfahren gemäß einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, dass
    ein Sensor (14) die Verschiebungs-Verlagerung senkrecht zur Rotationsachse (8) misst, während ein anderer Sensor (14) den Verschiebungs-Pfad parallel zur Rotationsachse misst.
  6. Verfahren gemäß einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass
    die Sensoren (14) am Umfang der Wanne (2) und diametral einander gegenüber vorliegen.
  7. Verfahren gemäß einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, dass
    Beschleunigungssensoren, optische und/oder elektromechanische Positionssensoren als Sensoren (14) verwendet werden.
EP01104871A 2000-05-09 2001-02-28 Verfahren zum Begrenzen der Unwucht in einer Wäschewaschmaschine Expired - Lifetime EP1154064B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10022609A DE10022609C2 (de) 2000-05-09 2000-05-09 Verfahren zur Begrenzung der Unwuchtwirkung einer Wascheinheit einer Waschmaschine und Vorrichtung zur Durchführung des Verfahrens
DE10022609 2000-05-09

Publications (4)

Publication Number Publication Date
EP1154064A2 EP1154064A2 (de) 2001-11-14
EP1154064A3 EP1154064A3 (de) 2002-10-23
EP1154064B1 true EP1154064B1 (de) 2005-04-27
EP1154064B2 EP1154064B2 (de) 2010-06-09

Family

ID=7641340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01104871A Expired - Lifetime EP1154064B2 (de) 2000-05-09 2001-02-28 Verfahren zum Begrenzen der Unwucht in einer Wäschewaschmaschine

Country Status (3)

Country Link
EP (1) EP1154064B2 (de)
DE (2) DE10022609C2 (de)
ES (1) ES2240260T5 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11021825B2 (en) 2018-04-11 2021-06-01 Haier Us Appliance Solutions, Inc. Washing machine appliance with location detection of imbalanced loads

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60013791T3 (de) † 2000-06-30 2008-01-24 Whirlpool Corp., Benton Harbor Verfahren zur Detektion und zur Kontrolle einer dynamischen Unwucht in der Trommel einer Waschmaschine und Waschmaschine zur Durchführung dieses Verfahrens
KR100511289B1 (ko) * 2003-11-27 2005-08-31 엘지전자 주식회사 세탁기의 탈수 운전방법
DE102005037144B4 (de) * 2005-02-18 2007-04-19 Diehl Ako Stiftung & Co. Kg Schwingfähig aufgehängtes Innenaggregat einer Wäschebehandlungsmaschine mit einem Schwingungssensor
EP2010705B1 (de) * 2006-04-13 2012-03-07 BSH Bosch und Siemens Hausgeräte GmbH Maschine zum waschen und/oder trocknen von wäsche
DE102006023453B4 (de) * 2006-05-18 2021-02-04 BSH Hausgeräte GmbH Verfahren zur Ermittlung bzw. Verringerung einer Unwucht bei einer Maschine zum Waschen und/oder Trocknen von Wäsche
DE102007040081B4 (de) * 2007-08-24 2010-04-08 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zum Regeln eines mechanischen Bewegungsverhaltens eines bewegbaren Elements eines Hausgeräts und entsprechendes Verfahren
KR101654054B1 (ko) * 2008-12-30 2016-09-05 엘지전자 주식회사 세탁장치
ES2411911T3 (es) 2009-05-15 2013-07-09 Miele & Cie. Kg Máquina lavadora con una cubeta para la colada y un equipo de detección
PL2251478T3 (pl) 2009-05-15 2013-01-31 Miele & Cie Pralka z pojemnikiem na roztwór piorący i urządzeniem rejestrującym
DE102009028508A1 (de) * 2009-08-13 2011-02-17 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Ermitteln einer Unwucht bei einer Wäschetrommel einer Waschmaschine und Waschmaschine
DE102009044706B4 (de) 2009-11-30 2015-06-03 Miele & Cie. Kg Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung
DE102010063346A1 (de) * 2010-12-17 2012-06-21 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Steuern eines Schleuderablaufs einer Wäschebehandlungsmaschine sowie Wäschebehandlungsmaschine
JP2012205778A (ja) * 2011-03-30 2012-10-25 Panasonic Corp 脱水装置
ES2467935T3 (es) 2011-04-06 2014-06-13 Miele & Cie. Kg Máquina lavadora con una cubeta para la colada y un equipo de detección
EP2666899A1 (de) 2012-05-22 2013-11-27 Whirlpool Corporation Verfahren zur Erkennung des Zyklusendes eines Haushaltswäschemachines
KR20160116880A (ko) * 2015-03-31 2016-10-10 엘지전자 주식회사 드럼 세탁기 및 그 제어 방법
DE102018210562A1 (de) 2018-06-28 2020-01-02 BSH Hausgeräte GmbH Waschmaschine mit Unwuchtausgleichsring
US11111619B2 (en) 2019-06-03 2021-09-07 Haier Us Appliance Solutions, Inc. Washing machine appliances and methods for operation
CN113430778B (zh) * 2021-06-02 2022-12-13 四川虹美智能科技有限公司 滚筒洗衣机偏心检测方法、滚筒洗衣机及其控制方法

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11021825B2 (en) 2018-04-11 2021-06-01 Haier Us Appliance Solutions, Inc. Washing machine appliance with location detection of imbalanced loads

Also Published As

Publication number Publication date
ES2240260T5 (es) 2010-07-15
DE60110306T2 (de) 2006-02-09
EP1154064B2 (de) 2010-06-09
ES2240260T3 (es) 2005-10-16
EP1154064A2 (de) 2001-11-14
EP1154064A3 (de) 2002-10-23
DE10022609A1 (de) 2001-11-29
DE10022609C2 (de) 2003-11-13
DE60110306D1 (de) 2005-06-02

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