EP1096050B1 - Procédé pour l'équilibrage de corps tournants - Google Patents

Procédé pour l'équilibrage de corps tournants Download PDF

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Publication number
EP1096050B1
EP1096050B1 EP00122114A EP00122114A EP1096050B1 EP 1096050 B1 EP1096050 B1 EP 1096050B1 EP 00122114 A EP00122114 A EP 00122114A EP 00122114 A EP00122114 A EP 00122114A EP 1096050 B1 EP1096050 B1 EP 1096050B1
Authority
EP
European Patent Office
Prior art keywords
speed
imbalance
balancing
drum
weights
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
EP00122114A
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German (de)
English (en)
Other versions
EP1096050A3 (fr
EP1096050A2 (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—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
    • 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 regulated Drive is set in rotation, using a balancing device consisting of at least one circulating with the body, arranged concentrically to its axis of rotation annular track, within which weights are arranged freely movable, and using an unbalance detection device that detects the unbalanced excursions of the system consisting of the body and the balancing device during the rotation and / or its unbalanced speed fluctuations in an imbalance signal with the system in a first method step for unbalance detection with a speed below its critical speed or below the critical speed its storage system is rotated and wherein the balancing device is such, that the weights at this speed of the (the) career (s) are taken.
  • the invention particularly relates to such a method for balancing the drum of a Drum washing machine.
  • a balancing device of the aforementioned type is known for example from EP 0 640 192 known. This is a so-called Kugelauswuchter, in which within the Raceways balls are arranged freely movable.
  • balancers The disadvantage of these balancers is that the workspace is elementary of the chosen one Frequency range or the speed of the body to be balanced depends. An unrestricted Effect is only in the frequency range above the highest resonance frequency (the largest critical speed) of the body or its entire storage system, consisting guaranteed from the suspension or attachment o. The like., Between the resonances (critical speeds), the balancer only partially compensates imbalances (see, for example, Kellenberger: Elastic balancing; Springer Verlag; P. 402f, esp. P. 408, Fig. 20.6).
  • the invention thus presents the problem of a method for balancing a rotating To reveal body of the type mentioned, in which safe and as short as possible Time a compensation of the imbalance before passing through the critical speed range or its resonant frequencies is reached.
  • the invention is based on the following finding:
  • the passage through the critical speed range is usually very fast and can be considered as a transition between the two phases described above.
  • the slippage between the weights and the body imbalance causes two sinusoidal unbalance signals (also the weights represent an imbalance in uneven distribution in the track) with different frequencies superimpose and cause a beating of the total imbalance signal (s. Figure 2).
  • the cause is that the body imbalance rotates with the speed of the body and the imbalance of the balls due to the slippage has a slightly lower speed. Since the speed difference is very low, the beating is low frequency. In the example of a washing machine drum described below, it is approximately 60 seconds at a drum speed of 100 min -1 . At the minimum of beating, body imbalance and center of gravity are opposite each other and compensate each other.
  • the non-sinusoidal speed curve by a targeted control or control can be achieved in which the drive positive or negative Acceleration pulses are impressed on the rotating system. These pulses will be delivered in an advantageous manner so that they act periodically on the system.
  • targeted impulses can (even with bodies with horizontal axis of rotation) the duration of the Beating be influenced.
  • FIG. 4 shows, on the basis of a schematic diagram, the parts which are essential for the invention in one embodiment such a washing machine. It has a tub (1) in which a drum (2) for Recording of laundry (3) is rotatably mounted. The drive of the drum (2) via a Motor (4), the power transmission via a V-belt (5). In this case, the speed of the engine in a known manner by one in the microprocessor control (6) of the washing machine integrated motor controller (6a) program and state-dependent.
  • the tub (1) is suspended from springs (7) swinging in the housing (8) and is for Damping of these vibrations in the lower area by shock absorbers (9) over the Caseback (10) supported. For further damping of the vibrations are on the tub (1) Additional weights (11) arranged so that it passes through the critical Speed range does not hit the housing (8).
  • a so-called ball balancer used in the drum cap (in the front drum area, not shown) and possibly in addition in the drum bottom (in the rear drum area, not shown) is as a balancing system a so-called ball balancer used.
  • Balls (13) arranged as weights and can be released in the circumferential direction of the drum move.
  • each raceway (12) must be in tightest packing in a predetermined angular range are filled with balls.
  • a ball balancer on the drum cap is sufficient.
  • Imbalance masses 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 imbalance forces are from the drum (2) via the bearings (not shown) to the oscillating unit (tub (1), springs (7), Shock absorbers (9)) passed.
  • the oscillating unit tub (1), springs (7), Shock absorbers (9)
  • the total load of the vibrating unit rise. The load is therefore on the torque and thus on the product of imbalance mass, acceleration and lever arm due. It is therefore sufficient to use the imbalance masses with the large lever arm to balance the front drum half.
  • the on the imbalances A and B or on the resulting total imbalance C acting centrifugal force Vectorially, the weight force overlaps so that the weight signal is unbalance dependent is exposed to periodic fluctuations, which is used to determine the imbalance Computer circuit (6b) can be used.
  • the displacement sensor (14) can For example, from DE 195 22 393 known acceleration sensor for unbalance be used.
  • another Computer circuit (6c) the imbalance by evaluating the fluctuations of a speed-dependent Signal (motor current, slip ...) or the speed itself (with a tachogenerator (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 the manner of the drum rotation, that only determines the envelope of the amount of imbalance signal and for further engine control is evaluated (see Figure 3).
  • the inventive method for balancing the drum of a washing machine is based a speed-time profile shown in Figure 5 and operates as follows:
  • the liquor is first pumped out of the tub (1). Then the spin start is started. It begins with the start of a measuring speed n Mess1 above the laundry application speed n A , but below the lowest resonance speed n R1 .
  • n Mess1 a measuring speed above the laundry application speed n A , but below the lowest resonance speed n R1 .
  • the speed for a short moment to a dewatering speed n E be increased, but the value must always be less than the lowest resonance speed n R1 .
  • the speed is then lowered back to the measuring speed n Mess1 .
  • the total imbalance C is sensed by the computer circuit (s) (6b, c). From the imbalance signal, the evaluation circuit evaluates the envelope of the signal amount to start the resonance passage in the beat minimum. For this purpose, the spin start is continued and the drum (2) accelerated to a speed above the resonance frequency n R1 .
  • the beat frequency (see Figure 2) can be controlled by strong periodic acceleration pulses reduce, so that the duration until the passage through the beat minimum is shortened in time.
  • the evaluation circuit (6d) then waits until the total imbalance falls below a threshold which is greater than the initially sensed minimum and is dependent on the first minimum, the total load, the type of wash and the run-up procedure. Thereafter, the actual spin start by the resonance speeds n Ri begins.
  • a faster alternative is to calculate a start time for the spin start by the evaluation circuit (6d), which lies before the first beat minimum. This time depends on the operating point (load condition) of the washing machine and can be calculated by an algorithm from the envelope.
  • the optimal point is in Range of the inflection point of the envelope, in any case before reaching the first Minimum.
  • Another improvement is laundry imbalances in size and / or position to create consciously. Track the previously known methods for applying the laundry the goal is to position it as evenly as possible on the drum shell (2c). Because both the type of laundry as well as the amount of laundry by sensing different parameters (eg suction times, lye tank lowering, etc.) can be assumed to be known, can be adjusted by a speed pulse to the compensation capacity of the balls (13) generate corresponding laundry imbalance. In this case, the minimum beats almost the entire laundry imbalance compensated by the ball conglomerate. By the targeted positioning of the laundry imbalance to the ball conglomerate can be the time to Finding the minimum will be significantly shortened.
  • these algorithms can also be repeated between the individual resonance regions n Ri . Due to the clever choice of the run-up profile, the balancing range n messi lying between individual resonant frequencies n Ri can likewise be used for the further imbalance minimization .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Testing Of Balance (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (8)

  1. Procédé pour équilibrer un corps qui est mis en rotation par un entraínement régulé, au moyen d'un dispositif d'équilibrage se composant d'au moins un chemin de roulement (12) en forme d'anneau circulaire, tournant avec le corps, disposé concentriquement par rapport à son axe de rotation, à l'intérieur duquel sont disposés des poids (13) librement mobiles, et au moyen d'un dispositif de détection de déséquilibre (6b, c) qui convertit les déviations dues au déséquilibre du système formé par le corps et le dispositif d'équilibrage pendant la rotation et/ou ses variations de vitesse de rotation dues au déséquilibre en un signal de déséquilibre, selon lequel, dans un premier pas de procédé de détection de déséquilibre, le système est mis en rotation à une vitesse de rotation inférieure à sa vitesse de rotation critique ou inférieure à la vitesse de rotation critique de son système de roulement et selon lequel le dispositif d'équilibrage est conçu de telle manière que les poids (13) sont entraínés par le(s) chemin(s) de roulement (12) à cette vitesse de rotation,
    caractérisé par le fait qu'un circuit d'évaluation (6d) détermine la courbe enveloppe de la valeur du signal de déséquilibre et, au voisinage de son minimum ou si celle-ci est inférieure à une valeur limite, accélère le corps à une vitesse de rotation supérieure à sa vitesse de rotation critique ou à la vitesse de rotation critique de son système de roulement.
  2. Procédé pour équilibrer un corps en rotation selon la revendication 1,
    caractérisé par le fait que le circuit d'évaluation détermine, en tenant compte de paramètres de fonctionnement, une valeur de départ de l'accélération à une vitesse de rotation supérieure à la vitesse de rotation critique du corps ou de son système de roulement, la valeur se situant avant l'atteinte du premier minimum de la courbe enveloppe de la valeur du signal de déséquilibre.
  3. Procédé pour équilibrer un corps en rotation selon la revendication 1 ou 2,
    caractérisé par le fait que des moyens de réglage de la vitesse de rotation ou de régulation agissant sur l'entraínement délivrent pendant un tour complet du système au moins une impulsion d'accélération positive ou négative au système.
  4. Procédé pour équilibrer un corps en rotation selon la revendication 4,
    caractérisé par le fait que les impulsions d'accélération positives ou négatives agissent périodiquement sur le système.
  5. Procédé pour équilibrer un corps en rotation autour d'un axe de rotation approximativement horizontal selon au moins l'une des revendications 1 à 4,
    caractérisé par l'utilisation d'un moyen disposé sur le(s) chemin(s) de roulement (12) pour élever le frottement de roulement des poids ou la résistance à l'écoulement du ou des chemin(s) de roulement (12).
  6. Procédé pour équilibrer un corps en rotation autour d'un axe de rotation approximativement horizontal selon la revendication 5,
    caractérisé par le fait que le moyen pour élever la résistance à l'écoulement du ou des chemin(s) de roulement (12) est constitué d'un moyen d'amortissement visqueux (14) dont la viscosité est telle que les poids (13) sont entraínés dans la plage de vitesses de rotation dans laquelle la détection de déséquilibre est effectuée.
  7. Procédé pour équilibrer le tambour (2) d'une machine à laver à tambour selon au moins l'une des revendications 1 à 6,
    caractérisé par le fait que la détection de déséquilibre est effectuée au-dessus d'une vitesse de rotation à laquelle le linge est appliqué contre l'enveloppe du tambour (2c) par l'accélération centrifuge.
  8. Procédé pour équilibrer un tambour (2) selon la revendication 7,
    caractérisé par le fait que l'on génère un déséquilibre de linge défini par sa taille et/ou sa position.
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 EP1096050A2 (fr) 2001-05-02
EP1096050A3 EP1096050A3 (fr) 2002-08-14
EP1096050B1 true EP1096050B1 (fr) 2005-08-17

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ID=7927509

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

Families Citing this family (14)

* 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
KR101085495B1 (ko) * 2006-11-06 2011-11-23 삼성전자주식회사 드럼 세탁기의 터브 진동제어방법
KR101267334B1 (ko) 2006-11-06 2013-05-23 삼성전자주식회사 세탁기의 볼 밸런서 제어방법
KR101428477B1 (ko) 2007-01-24 2014-08-12 삼성전자 주식회사 세탁기 및 그 제어방법
KR101287536B1 (ko) * 2007-06-05 2013-07-18 삼성전자주식회사 세탁기 및 그 제어방법
KR101407959B1 (ko) 2008-01-22 2014-06-20 삼성전자주식회사 볼 밸런서를 구비한 드럼 세탁기 및 그 제어방법
EP2470712B1 (fr) 2009-08-27 2018-03-07 LG Electronics Inc. Procédé de commande d'un lave-linge
WO2011025317A1 (fr) * 2009-08-27 2011-03-03 Lg Electronics Inc. Procédé de commande d'un lave-linge
US20120151694A1 (en) * 2009-08-27 2012-06-21 Jae Hyuk Jang Control method of laundry machine
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
US9493897B2 (en) * 2013-06-25 2016-11-15 Whirlpool Corporation Method of operation for a laundry treating appliance having a ball balance ring
EP3702509B1 (fr) * 2019-02-28 2021-09-01 BSH Hausgeräte GmbH Appareil domestique comportant un dispositif d'équilibrage à billes et un contrôle de la viscosité des fluides

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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

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DE3821239C2 (de) * 1988-06-23 1996-10-24 Dittel Walter Gmbh Verfahren zum Auswuchten von rotierenden Teilen und Vorrichtung zur Durchführung des Verfahrens
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
DE19549526C2 (de) * 1995-06-23 1999-02-11 Miele & Cie Verfahren zur Steuerung des Schleuderprozesses einer Waschmaschine
IT1289380B1 (it) * 1996-05-30 1998-10-02 Electrolux Zanussi Elettrodome Lavabiancheria con procedimento perfezionato di bilanciamento dinamico
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Patent Citations (1)

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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

Also Published As

Publication number Publication date
DE50010961D1 (de) 2005-09-22
DE19952464C2 (de) 2002-05-08
ES2244383T3 (es) 2005-12-16
ATE302300T1 (de) 2005-09-15
DE19952464A1 (de) 2001-05-23
EP1096050A3 (fr) 2002-08-14
EP1096050A2 (fr) 2001-05-02

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