EP1096050A2 - Procédé pour l'équilibrage de corps tournants - Google Patents

Procédé pour l'équilibrage de corps tournants Download PDF

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Publication number
EP1096050A2
EP1096050A2 EP00122114A EP00122114A EP1096050A2 EP 1096050 A2 EP1096050 A2 EP 1096050A2 EP 00122114 A EP00122114 A EP 00122114A EP 00122114 A EP00122114 A EP 00122114A EP 1096050 A2 EP1096050 A2 EP 1096050A2
Authority
EP
European Patent Office
Prior art keywords
speed
balancing
unbalance
drum
imbalance
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
EP00122114A
Other languages
German (de)
English (en)
Other versions
EP1096050A3 (fr
EP1096050B1 (fr
Inventor
Christian Dr. Dyballa
Max Grosse Hündfeld
Jürgen HAMBROCK
Armin Hapke
Rudolf Herden
Reinhard Kaufmann
Thorsten Kuka
Helge Müller
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.)
Miele und Cie KG
Original Assignee
Miele und Cie 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
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1096050A2 publication Critical patent/EP1096050A2/fr
Publication of EP1096050A3 publication Critical patent/EP1096050A3/fr
Application granted granted Critical
Publication of EP1096050B1 publication Critical patent/EP1096050B1/fr
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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
    • 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
    • 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 for balancing a body by a controlled Drive is rotated using a balancing device consisting of at least one rotating with the body, arranged concentrically to its axis of rotation circular raceway within which weights are freely movable, and using an unbalance detection device which detects the deflections caused by the unbalance of the system consisting of the body and the balancing device during the rotation and / or its unbalanced speed fluctuations in an unbalance signal converts, the system using in a first method step for unbalance detection a speed below its critical speed or below the critical speed its bearing system is rotated and the balancing device is designed in such a way that the weights are taken along by the track (s) at this speed.
  • the In particular, the invention relates to such a method for balancing the drum Drum washing machine.
  • a balancing device of the type mentioned at the outset is, for example, from EP 0 640 192 known. It is a so-called ball balancer, in which within the Race balls are freely movable.
  • the disadvantage of this balancer is that the work area is elementary from the one selected Frequency range or the speed of the body to be balanced depends.
  • An unrestricted one Effect is only in the frequency range above the largest resonance frequency (the greatest critical speed) of the body or its entire bearing system guaranteed from the suspension or fastening or the like, between the resonances (critical speeds), the balancer compensates only to a limited extent unbalance (see, for example, Kellenberger: Elastic balancing; Springer Verlag; P. 402f, esp. P. 408, Fig.20.6).
  • DE 197 18 321 describes a method for balancing the drum of a washing machine using a ball balancer: After the wash cycle, the drum is accelerated to a speed above the lay-on speed, so that the laundry adheres to the drum jacket due to the centrifugal force and possibly imbalance due to uneven distribution. The position of this Laundry imbalance is then sensed.
  • the track of the ball balancer is with a viscous Damping agent (for example silicone oil) filled, its viscosity dimensioned in this way is that the balls roll freely in the speed range of the unbalance sensor. Subsequently the drum is at a certain, previously determined position of unbalance and balls accelerated so much that the balls are carried away by the damping agent.
  • a viscous Damping agent for example silicone oil
  • the disadvantage of this method is the strong temperature dependence of the damping agent viscosity. Especially when using ball balancers in washing machines, at which the alkali temperature and thus the temperature of the damping agent can fluctuate between 20 ° C and 100 ° C, compliance with the exact specification of the Friction behavior only possible with very expensive oils. It is also the phase in which Balls and laundry imbalance face each other, only very briefly with each drum revolution There may be errors in sensing the unbalance position or in the exact positioning of balls occur when the drum passes through the critical speed range can no longer be taken into account or corrected. Then there are very strong ones Deflections of the vibrating unit.
  • the invention thus presents the problem of a method for balancing a rotating one Reveal body of the type mentioned, in which safely and in the shortest possible time Time to compensate for the imbalance before passing through the critical speed range or its resonance frequencies are reached.
  • the advantage that can be achieved with the method designed according to the invention results from the Evaluation of relatively low-frequency compensation processes, so that the time of compensation the unbalance can be determined very precisely and thus a passage through the critical speed range with the least unbalance is possible.
  • the invention is based on the following finding:
  • the passage through the critical speed range is usually very fast and can be regarded as a transition between the two phases described above.
  • the slip between the weights and the body unbalance leads to the fact that two sinusoidal unbalance signals (the weights also represent an unbalance with an uneven distribution in the raceway) overlap with different frequencies and lead to a floating of the total unbalance signal (see Figure 2).
  • the reason is that the unbalance of the body rotates at the speed of the body and the unbalance of the balls has a slightly lower speed due to the slippage. Since the speed difference is very small, the beat is low-frequency. In the example described below it is a washing machine drum at a drum speed of 100 min -1 for about 60 seconds. In the minimum of the beat, body imbalance and the center of gravity are opposite each other and compensate each other.
  • the non-sinusoidal speed curve can be determined by a Targeted regulation or control can be achieved with the drive being positive or negative Acceleration impulses are impressed on the rotating system. These impulses will be advantageously released in such a way that they act periodically on the system. By Such targeted impulses can (even with bodies with a horizontal axis of rotation) the duration of the Beat can be affected.
  • FIG. 4 shows the parts essential for the invention in a schematic diagram such washing machine. It has a tub (1) in which a drum (2) for Laundry (3) is rotatably mounted. The drum (2) is driven by a Motor (4), the power transmission via a V-belt (5). The speed of the motor in a known manner by a in the microprocessor control (6) of the washing machine integrated motor controller (6a) can be set depending on the program and status.
  • the tub (1) is suspended from springs (7) in the housing (8) and becomes a Damping of these vibrations in the lower area by shock absorbers (9) compared to Supported base (10). To further dampen the vibrations are on the tub (1) Additional weights (11) arranged so that it passes through the critical Speed range does not strike the housing (8).
  • a so-called ball balancer In the drum cap (in the front drum area, not shown) and possibly additionally in the drum base (in the rear drum area, not shown) is a so-called ball balancer is used.
  • Balls (13) arranged as weights and can freely in the circumferential direction of the drum move. To ensure maximum compensation, each track (12) must be in tightest packing can be filled with balls in a given angular range. By Setting the size and number of balls (13) can cause an imbalance in the order of magnitude of their total weight are generated and thus also compensated. With one-sided Washing machine drums (2), a ball balancer on the drum cap is sufficient.
  • Imbalance weights in the rear part of the drum (2) have only a small lever in the front Part of the drum (2) a large lever arm.
  • the unbalance forces are from the drum (2) via the bearings (not shown) to the vibrating unit (tub (1), springs (7), Shock absorber (9)) passed on.
  • the vibrating unit tub (1), springs (7), Shock absorber (9)
  • the load is on the torque and thus on the product of unbalance mass, acceleration and lever arm due. It is therefore sufficient to have the unbalanced masses with the large lever arm the front half of the drum.
  • the on the unbalances A and B or the centrifugal force acting on the resulting total unbalance C. vectorially overlaps the weight, so that the weight signal is unbalanced is exposed to periodic fluctuations, which are used to determine the imbalance by the Computer circuit (6b) can be used.
  • the displacement sensor (14) for example an acceleration sensor known from DE 195 22 393 for unbalance sensing be used.
  • another Computer circuit (6c) the unbalance by evaluating the fluctuations of a speed-dependent Signals (motor current, slip ...) or the speed itself (with a tachometer generator (15)).
  • An evaluation circuit (6d) integrated in the microprocessor control prepares this during the unbalance signal of the computer circuit (s) (6b, c) measured in terms of the drum rotation, that only the envelope of the amount of the unbalance signal is determined and for further engine control is evaluated (see FIG. 3).
  • the method according to the invention for balancing the drum of a washing machine is based on of a speed-time profile shown in Figure 5 and works as follows:
  • the liquor is first pumped out of the tub (1). Then the spin start is started. It starts with a measuring speed n Mess1 above the laundry application speed n A , but below the lowest resonance speed n R1 .
  • the speed can be increased for a short moment to a dewatering speed n E immediately after distributing the laundry on the drum jacket (2c), however, the value must always be lower than the lowest resonance speed n R1 .
  • the speed is then reduced again to the measuring speed n Mess1 .
  • the total unbalance C is sensed by the computer circuit (s) (6b, c).
  • the evaluation circuit evaluates the envelope of the signal amount from the unbalance signal in order to start the resonance passage at the minimum beat. For this purpose, the spin-up is continued and the drum (2) is accelerated to a speed above the resonance frequency n R1 .
  • the beat frequency (see FIG. 2) can be determined by strong periodic acceleration pulses decrease so that the time to pass through the beating minimum is shortened in time.
  • a start time for the spin-up run is chosen, which is before reaching the beating minimum. Since the balls (13) through the slip to the passage through the resonance speeds and the Acceleration to the spin speed itself greatly increases the slip can be achieved be that at the time of driving through the critical speed a minimum of unbalance acts and thus the deflection of the vibrating unit is kept small.
  • the evaluation circuit (6d) waits until the total unbalance falls below a threshold which is dependent on the first minimum, on the total load, on the type of laundry and on the ramp-up method and which is greater than the minimum sensed at first. Then the actual spin-up starts due to the resonance speeds n Ri .
  • a faster alternative is to calculate a start time for the spin-up through the evaluation circuit (6d), which lies before the first beat minimum. This time depends on the operating point (load state) of the washing machine and can be calculated from the envelope using an algorithm.
  • the optimal point is in Range of the turning point of the envelope, in any case before reaching the first Minimums.
  • Another improvement is laundry imbalance in size and / or position to generate consciously.
  • the goal is to position it as evenly as possible on the drum casing (2c).
  • both the type of laundry as well as the amount of laundry by sensing different parameters e.g. suction times, lowering of the tub, etc.
  • can be by a speed pulse to the compensation capacity of the balls (13) generate corresponding laundry imbalance.
  • the beating minimum almost the entire laundry imbalance is compensated by the ball conglomerate.
  • Targeted positioning of the laundry imbalance to the ball conglomerate can take the time up to Finding the minimum can be significantly shortened.
  • these algorithms can also be repeated between the individual resonance ranges n Ri .
  • the balancing range n messi between individual resonance frequencies n Ri can also be used for further unbalance minimization .
EP00122114A 1999-10-29 2000-10-12 Procédé pour l'équilibrage de corps tournants Expired - Lifetime EP1096050B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19952464 1999-10-29
DE19952464A DE19952464C2 (de) 1999-10-29 1999-10-29 Verfahren zum Auswuchten eines rotierenden Körpers, der durch einen geregelten Antrieb in Rotation versetzt wird, und Verwendung des Verfahrens

Publications (3)

Publication Number Publication Date
EP1096050A2 true EP1096050A2 (fr) 2001-05-02
EP1096050A3 EP1096050A3 (fr) 2002-08-14
EP1096050B1 EP1096050B1 (fr) 2005-08-17

Family

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Family Applications (1)

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EP00122114A Expired - Lifetime EP1096050B1 (fr) 1999-10-29 2000-10-12 Procédé pour l'équilibrage de corps tournants

Country Status (4)

Country Link
EP (1) EP1096050B1 (fr)
AT (1) ATE302300T1 (fr)
DE (2) DE19952464C2 (fr)
ES (1) ES2244383T3 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918447A1 (fr) * 2006-11-06 2008-05-07 Samsung Electronics Co., Ltd. Procédé de contrôle d'oscillation de tube d'une machine à laver à tambour
EP1950336A1 (fr) 2007-01-24 2008-07-30 Samsung Electronics Co., Ltd. Machine à laver avec compensateurs et son procédé de commande
EP1921196A3 (fr) * 2006-11-06 2009-07-22 Samsung Electronics Co., Ltd. Procédé de contrôle d'équilibrage de billes dans un lave-linge
EP2083109A1 (fr) 2008-01-22 2009-07-29 Samsung Electronics Co., Ltd. Machine à laver de type à tambour dotée de compensateurs à roulement et procédé de commande correspondant
EP2000576A3 (fr) * 2007-06-05 2009-09-09 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande
WO2011025317A1 (fr) * 2009-08-27 2011-03-03 Lg Electronics Inc. Procédé de commande d'un lave-linge
CN102510916A (zh) * 2009-08-27 2012-06-20 Lg电子株式会社 洗衣机的控制方法
EP2821538A1 (fr) * 2013-06-25 2015-01-07 Whirlpool Corporation Procédé de fonctionnement d'un appareil de traitement de linge doté de compensateurs à roulement
US9039786B2 (en) 2009-08-27 2015-05-26 Lg Electronics Inc. Control method of laundry machine
CN111621958A (zh) * 2019-02-28 2020-09-04 Bsh家用电器有限公司 带有球平衡器和流体粘度控制的家用器具

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10202252C1 (de) * 2002-01-21 2003-03-20 Miele & Cie Verfahren zum Betrieb einer Waschmaschine
DE10244426B4 (de) 2002-09-24 2005-02-10 Siemens Ag Bearbeitungsmaschine
DE102010053104B4 (de) 2010-12-01 2012-12-13 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsvorrichtung und Verfahren zum Steuern des Betriebs einer Wäschebehandlungsvorrichtung
AU2013204355B2 (en) 2012-12-21 2016-10-27 Fisher & Paykel Appliances Limited Improved laundry appliance

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421845A1 (de) * 1984-06-13 1985-12-19 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum erfassen der unwucht eines rotierenden koerpers
EP0347883A2 (fr) * 1988-06-23 1989-12-27 Walter Dittel GmbH Luftfahrtgerätebau Procédé et dispositif d'equilibrage de pièces en rotation
DE19522393A1 (de) * 1995-06-23 1997-01-02 Miele & Cie Vorrichtung und Verfahren zur Bestimmung der Unwucht bei einer Trommelwaschmaschine
DE19718321C1 (de) * 1997-04-30 1998-10-29 Miele & Cie Verfahren zum Auswuchten von rotierenden Körpern
DE19857663A1 (de) * 1997-12-20 1999-06-24 Miele & Cie Trommelwaschmaschine oder Waschtrockner bzw. Verfahren zum Waschen und Schleudern von Waschgut in einer Waschmaschine oder einem Waschtrockner
DE19842610A1 (de) * 1997-12-10 1999-07-01 Miele & Cie Verfahren zur Steuerung des Schleuderhochlaufs in einer Waschmaschine oder einem Waschtrockner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2069120C (fr) * 1992-05-21 2005-04-26 Anton Gasafi Methode et appareil de correction de balourd
DE19506471C2 (de) * 1995-02-24 1999-10-21 Roland Schuehle Verfahren zur elektronischen Bestimmung und Kontrolle der Güte der Ausrichtung aneinandergekuppelter Wellen und Vorrichtung zu dessen Durchführung
IT1289380B1 (it) * 1996-05-30 1998-10-02 Electrolux Zanussi Elettrodome Lavabiancheria con procedimento perfezionato di bilanciamento dinamico
DE19804080B4 (de) * 1998-02-03 2005-07-21 AEG Hausgeräte GmbH Verfahren zum Umverteilen von in eine Trommel in einer Waschmaschine eingebrachter Wäsche

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421845A1 (de) * 1984-06-13 1985-12-19 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum erfassen der unwucht eines rotierenden koerpers
EP0347883A2 (fr) * 1988-06-23 1989-12-27 Walter Dittel GmbH Luftfahrtgerätebau Procédé et dispositif d'equilibrage de pièces en rotation
DE19522393A1 (de) * 1995-06-23 1997-01-02 Miele & Cie Vorrichtung und Verfahren zur Bestimmung der Unwucht bei einer Trommelwaschmaschine
DE19718321C1 (de) * 1997-04-30 1998-10-29 Miele & Cie Verfahren zum Auswuchten von rotierenden Körpern
DE19842610A1 (de) * 1997-12-10 1999-07-01 Miele & Cie Verfahren zur Steuerung des Schleuderhochlaufs in einer Waschmaschine oder einem Waschtrockner
DE19857663A1 (de) * 1997-12-20 1999-06-24 Miele & Cie Trommelwaschmaschine oder Waschtrockner bzw. Verfahren zum Waschen und Schleudern von Waschgut in einer Waschmaschine oder einem Waschtrockner

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1918447A1 (fr) * 2006-11-06 2008-05-07 Samsung Electronics Co., Ltd. Procédé de contrôle d'oscillation de tube d'une machine à laver à tambour
EP1921196A3 (fr) * 2006-11-06 2009-07-22 Samsung Electronics Co., Ltd. Procédé de contrôle d'équilibrage de billes dans un lave-linge
US7669267B2 (en) 2006-11-06 2010-03-02 Samsung Electronics Co., Ltd. Ball balancer control method of washing machine
EP1950336A1 (fr) 2007-01-24 2008-07-30 Samsung Electronics Co., Ltd. Machine à laver avec compensateurs et son procédé de commande
EP2000576A3 (fr) * 2007-06-05 2009-09-09 Samsung Electronics Co., Ltd. Machine à laver et son procédé de commande
KR101287536B1 (ko) * 2007-06-05 2013-07-18 삼성전자주식회사 세탁기 및 그 제어방법
CN101319453B (zh) * 2007-06-05 2012-03-21 三星电子株式会社 洗衣机和控制该种洗衣机的方法
EP2083109A1 (fr) 2008-01-22 2009-07-29 Samsung Electronics Co., Ltd. Machine à laver de type à tambour dotée de compensateurs à roulement et procédé de commande correspondant
CN101492874B (zh) * 2008-01-22 2013-02-13 三星电子株式会社 具有球平衡物的滚筒型洗衣机及其控制方法
US8341787B2 (en) 2008-01-22 2013-01-01 Samsung Electronics Co., Ltd. Drum type washing machine having ball balancers and controlling method of the same
CN102575408A (zh) * 2009-08-27 2012-07-11 Lg电子株式会社 洗衣机的控制方法
EP2470707A1 (fr) * 2009-08-27 2012-07-04 LG Electronics Inc. Procédé de commande d'un lave-linge
CN102510916A (zh) * 2009-08-27 2012-06-20 Lg电子株式会社 洗衣机的控制方法
WO2011025317A1 (fr) * 2009-08-27 2011-03-03 Lg Electronics Inc. Procédé de commande d'un lave-linge
RU2497990C1 (ru) * 2009-08-27 2013-11-10 Эл Джи Электроникс Инк. Способ управления машиной для обработки белья
EP2470707A4 (fr) * 2009-08-27 2014-12-03 Lg Electronics Inc Procédé de commande d'un lave-linge
CN102575408B (zh) * 2009-08-27 2015-03-04 Lg电子株式会社 洗衣机的控制方法
EP2470704A4 (fr) * 2009-08-27 2015-03-04 Lg Electronics Inc Procédé de commande d'un lave-linge
US9039786B2 (en) 2009-08-27 2015-05-26 Lg Electronics Inc. Control method of laundry machine
EP2821538A1 (fr) * 2013-06-25 2015-01-07 Whirlpool Corporation Procédé de fonctionnement d'un appareil de traitement de linge doté de compensateurs à roulement
US9493897B2 (en) 2013-06-25 2016-11-15 Whirlpool Corporation Method of operation for a laundry treating appliance having a ball balance ring
CN111621958A (zh) * 2019-02-28 2020-09-04 Bsh家用电器有限公司 带有球平衡器和流体粘度控制的家用器具
CN111621958B (zh) * 2019-02-28 2023-12-12 Bsh家用电器有限公司 带有球平衡器和流体粘度控制的家用器具

Also Published As

Publication number Publication date
DE50010961D1 (de) 2005-09-22
EP1096050A3 (fr) 2002-08-14
EP1096050B1 (fr) 2005-08-17
DE19952464C2 (de) 2002-05-08
DE19952464A1 (de) 2001-05-23
ES2244383T3 (es) 2005-12-16
ATE302300T1 (de) 2005-09-15

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