EP2217752B1 - Verfahren und vorrichtung zur bestimmung der optimalen drehzahl der trommel einer wäschebehandlungsvorrichtung - Google Patents

Verfahren und vorrichtung zur bestimmung der optimalen drehzahl der trommel einer wäschebehandlungsvorrichtung Download PDF

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Publication number
EP2217752B1
EP2217752B1 EP08854348A EP08854348A EP2217752B1 EP 2217752 B1 EP2217752 B1 EP 2217752B1 EP 08854348 A EP08854348 A EP 08854348A EP 08854348 A EP08854348 A EP 08854348A EP 2217752 B1 EP2217752 B1 EP 2217752B1
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EP
European Patent Office
Prior art keywords
rotational speed
target rotational
laundry
oscillatory system
determining
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.)
Active
Application number
EP08854348A
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German (de)
English (en)
French (fr)
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EP2217752A1 (de
Inventor
Edwin Bolduan
Harald MOSCHÜTZ
Horst Wiemer
Gundula Czyzewski
Ingo Schulze
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.)
BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP2217752B1 publication Critical patent/EP2217752B1/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—Imbalance; Noise level
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed

Definitions

  • the present invention relates to a method for determining a target speed below the application speed of a laundry drum, and a method for treating laundry using said method. Furthermore, the invention relates to a laundry treatment device which is equipped with a control element for carrying out the method according to the invention.
  • washing and / or rinsing methods for automatic full automatic washing machines are already known in the prior art, in which the laundry drum is temporarily driven at varying speeds and directions of rotation during the washing and rinsing process in order to improve the washing effect.
  • Such a procedure is over EP 0 618 323 A1 known.
  • the laundry is to absorb water during the washing or rinsing operation at a speed well below the so-called application speed, at which the laundry is pressed by the centrifugal force to the drum wall. Due to this low speed the best possible flooding of the laundry should be achieved. The absorbed water should then be driven out of the laundry during operation at a speed significantly above the application speed again. This process is also known as wash-spin.
  • the DE 196 19 603 A1 Proposes to counter different loading amounts and the resulting different levels of Waschmechanikein rationalen at a fixed speed, characterized in that the speed is increased and decreased alternately and in response to the respective position of the driver.
  • the speed change of different loads is independent.
  • the DE 102 17 009 C1 discloses a washing method in which a lower and an upper value for the drum speeds are set as a function of the loading and the drum is operated at different speeds.
  • the object of the present invention was to provide a method with which for each load and any washing program each optimal speed for the greatest possible washing mechanics can be determined and used.
  • the laundry drum During a conventional washing and / or rinsing process, the laundry drum, usually reversing, is operated at a so-called washing speed, which is about 55 min -1 for conventional washing machines. This speed is determined once during the device development empirically and set in the wash program. If now the laundry drum loaded with laundry, possibly wetted and operated at the washing speed, it should come to a certain mechanical effect.
  • laundry for the purposes of the present invention includes on the one hand textiles, especially laundry, but also generally all objects that can be treated in a conventional washing machine.
  • washing mechanics or “mechanical action” refers to the forces acting on the laundry when the laundry drum is moved.
  • this is understood to mean a process in which the laundry items by s the drivers arranged in the laundry drum are taken and lifted and, once they have reached such a high point by the rotation of the drum that they are no longer held by the drivers, fall down again.
  • the impact of the falling laundry items on underlying laundry items or the surface of the wash liquor has a good cleaning effect and is similar to a Walk.
  • the speed at which the laundry items are exposed to the largest washing mechanism described above is the speed determined in the method of the invention.
  • a laundry drum is operated during operation at a predetermined target speed (about 55 min -1 ).
  • a predetermined target speed about 55 min -1 .
  • the actual speed varies depending on the type and amount of the load.
  • the laundry case generated during the rotation of the laundry drum causes not inconsiderable deflections on the spring-mounted oscillating system.
  • the vibration system of a washing machine is understood to mean the drum, the associated tub as well as the springs and dampers on which the tub is suspended.
  • the strength of the washing mechanism thus correlates with the strength of the oscillating system movement.
  • the method according to the invention thus preferably comprises the additional step of moving the drum at the previously determined setpoint speed n at which the greatest possible mechanical effect on the laundry is achieved.
  • the present invention also provides a laundry treatment process with which Laundry may be washed, dried or otherwise treated under the greatest possible mechanical effect.
  • At least two target rotational speeds are predetermined, preferably at least three (n1, n2 and n3), even more preferably at least four (n1, n2, n3 and n4).
  • the predetermined desired speeds should be distributed over a reasonable range, which is for conventional washing machines in the range of 20 to 80 min -1 , always taking care that the relevant for the inventive process target speeds are below the respective application speed .
  • Predetermined target speeds may, for example, be selected from the following: 20 min -1 , 25 min -1 , 30 min -1 , 35 min -1 , 40 min -1 , 45 min -1 , 50 min -1 , 55 min - 1 , 60 min -1 , 65 min -1 , 70 min -1 , 75 min -1 and 80 min -1 .
  • the method according to the invention can also be provided in the method according to the invention to first determine the application speed for all items to be washed at a respective load. This can be done by conventional methods or estimated on the basis of loading and empirical values.
  • the highest predetermined target speed value for the oscillation system movement measurement one is selected which is slightly below the application speed.
  • the drum loaded with the laundry to be treated is thus operated at a first nominal rotational speed n1 for a predetermined period ⁇ tn.
  • the oscillating system movement is measured for a further predetermined period ⁇ ts using sensors associated with the oscillating system. From this measurement, which can also consist of several measuring points or a continuous measurement, as described below, a vibration system movement value s1 for the first setpoint rotational speed n1 is determined and assigned.
  • the drum is operated at a second desired speed n2 and in turn assigned a vibration system movement value s2.
  • the values s1-sx are compared, and the highest value for s is determined.
  • This value is assigned to a target rotational speed n, which thus represents the optimum target rotational speed for the respective load for the greatest possible mechanical effect on the laundry. At this target speed then the laundry drum can be operated.
  • the oscillatory system motion values are determined by measuring the frequency and / or amplitude of the oscillatory system movements by monitoring the drive torque, the water level and / or the oscillatory system movements one-dimensionally, two-dimensionally or three-dimensionally.
  • the oscillating system movement is measured by sensors, whereby sensors already present in a washing machine can also be used.
  • the sensors can measure one-dimensional, two-dimensional or even three-dimensional movements.
  • those oscillatory system movements of the oscillatory system are determined which have a greater frequency than the respective nominal rotational speed n.
  • a particular advantage of the invention is that the already existing sensors can be used for the method according to the invention.
  • Suitable sensors are displacement sensors, acceleration sensors or water level sensors, which are already used, for example, for the measurement of the load and the like.
  • Examples of special sensors are load sensors, three-dimensional displacement sensors or analog pressure sensors.
  • the actual speed fluctuation can also be used for the calculation of the optimum setpoint rotational speed.
  • the drum slows slightly during this rotation portion, as the pressed by the driver to the laundry drum wall Waschgut Pacifice shift the center of gravity of the drum.
  • the drum can accelerate again during the short rotation stage.
  • Most conventional washing machines are already equipped with controllers that counteract this phenomenon. Nevertheless, it is still measurable and can thus also serve as an indicator for the washing mechanics and be included in the calculation of the optimum target speed. It is also possible to measure oscillatory system movements via the motor control.
  • the motor current can be measured.
  • Another aspect of the present invention is a washing machine with a laundry drum stored in a vibrating system and a programmable controller associated with a control program that defines the method of the present invention.
  • a control unit for example, the predetermined setpoint speeds can be specified, or else a program can be defined which previously determines the application speed and then selects suitable setpoint speeds.
  • FIG. 1 shows in cross section a washing machine 1 in front view.
  • the washing drum 2 with carriers 3 and the tub located around it 4.
  • the tub 4 is suspended from four spring elements 6, which are additionally provided with dampers 8 at the bottom.
  • Laundry drum 2, tub 4 and spring elements 6 form the oscillating system 10.
  • the drum 2 is driven by the drive 16.
  • sensors 12 For the measurement of oscillatory system movements are sensors 12 intended.
  • a control 14 that can perform the method of the present invention.
  • laundry items a, b, c are laundry items a, b, c.
  • the items to be washed a, b and c in the laundry drum 2 perform a rolling movement (not shown), wherein the drum 2 rotates very slowly, so that the items to be washed a, b, c not from the drivers 3 in the height be lifted but only in the lower part of the drum 2 are layered around each other.
  • n2 the driver take along 3 individual pieces of laundry and drag them along over a certain turning section. This is shown for the laundry item b. At some point, the laundry item falls down again due to gravity. This is shown for the laundry item c.
  • the speed n2 in this case is the speed for the optimal mechanics entry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Coating Apparatus (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP08854348A 2007-11-28 2008-10-28 Verfahren und vorrichtung zur bestimmung der optimalen drehzahl der trommel einer wäschebehandlungsvorrichtung Active EP2217752B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007057331A DE102007057331A1 (de) 2007-11-28 2007-11-28 Verfahren und Vorrichtung zur Bestimmung der optimalen Drehzahl der Trommel einer Wäschebehandlungsvorrichtung
PCT/EP2008/064570 WO2009068386A1 (de) 2007-11-28 2008-10-28 Verfahren und vorrichtung zur bestimmung der optimalen drehzahl der trommel einer wäschebehandlungsvorrichtung

Publications (2)

Publication Number Publication Date
EP2217752A1 EP2217752A1 (de) 2010-08-18
EP2217752B1 true EP2217752B1 (de) 2011-03-30

Family

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EP08854348A Active EP2217752B1 (de) 2007-11-28 2008-10-28 Verfahren und vorrichtung zur bestimmung der optimalen drehzahl der trommel einer wäschebehandlungsvorrichtung

Country Status (7)

Country Link
US (1) US8726440B2 (ru)
EP (1) EP2217752B1 (ru)
CN (1) CN101878335B (ru)
AT (1) ATE503878T1 (ru)
DE (2) DE102007057331A1 (ru)
EA (1) EA019987B1 (ru)
WO (1) WO2009068386A1 (ru)

Cited By (1)

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DE102021212649A1 (de) 2021-11-10 2023-05-11 BSH Hausgeräte GmbH Verfahren zum bestimmen einer mechanischen einwirkung auf wäschestücke und wäschepflegemaschine zu dessen durchführung

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DE102010002048A1 (de) * 2010-02-17 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Verfahren zur Einstellung einer Schleuderdrehzahl einer Trommel eines Hausgeräts zur Pflege von Wäschestücken
IT1403157B1 (it) * 2010-12-01 2013-10-04 Elbi Int Spa Macchina lavatrice con rilevazione delle vibrazioni della vasca o camera di lavaggio.
US9157177B2 (en) 2011-12-21 2015-10-13 Whirlpool Corporation Laundry treating appliance and method of control
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DE102014001676B4 (de) * 2014-02-07 2022-03-03 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsgerät mit Unwuchterfassungseinrichtung und Verfahren zum Erkennen einer Unwucht in einem Wäschebehandlungsgerät
DE102014217943A1 (de) * 2014-09-08 2016-03-10 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit einem Drucksensor sowie hierzu geeignete Waschmaschine
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CN107245838B (zh) * 2017-05-31 2022-04-15 广东威灵电机制造有限公司 滚筒洗衣机及其控制方法、装置以及机器可读存储介质
CN108360212B (zh) * 2018-02-01 2023-11-28 惠而浦（中国）股份有限公司 一种通过加速度传感器判断洗涤效果的方法
DE102018221057A1 (de) 2018-12-05 2020-06-10 BSH Hausgeräte GmbH Wäschebehandlungsgerät und Verfahren zum Betreiben eines Wäschebehandlungsgeräts
US11242633B2 (en) 2019-10-03 2022-02-08 Haier Us Appliance Solutions, Inc. Washing machine appliances and methods of operation
DE102019216697A1 (de) 2019-10-30 2021-05-06 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung
CN113293563A (zh) * 2021-06-15 2021-08-24 海信（山东）冰箱有限公司 洗涤方法及洗衣机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021212649A1 (de) 2021-11-10 2023-05-11 BSH Hausgeräte GmbH Verfahren zum bestimmen einer mechanischen einwirkung auf wäschestücke und wäschepflegemaschine zu dessen durchführung
EP4180561A1 (de) 2021-11-10 2023-05-17 BSH Hausgeräte GmbH Verfahren zum bestimmen einer mechanischen einwirkung auf wäschestücke und wäschepflegemaschine zu dessen durchführung

Also Published As

Publication number Publication date
US8726440B2 (en) 2014-05-20
DE102007057331A1 (de) 2009-06-04
WO2009068386A1 (de) 2009-06-04
EP2217752A1 (de) 2010-08-18
EA019987B1 (ru) 2014-07-30
CN101878335A (zh) 2010-11-03
ATE503878T1 (de) 2011-04-15
US20100251487A1 (en) 2010-10-07
CN101878335B (zh) 2012-04-18
EA201070643A1 (ru) 2010-12-30
DE502008003056D1 (de) 2011-05-12

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