EP0960231B1 - Appareil de traitement de lessive avec un moteur d'entrainement monte sur l'arbre du tambour - Google Patents

Appareil de traitement de lessive avec un moteur d'entrainement monte sur l'arbre du tambour Download PDF

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Publication number
EP0960231B1
EP0960231B1 EP98906957A EP98906957A EP0960231B1 EP 0960231 B1 EP0960231 B1 EP 0960231B1 EP 98906957 A EP98906957 A EP 98906957A EP 98906957 A EP98906957 A EP 98906957A EP 0960231 B1 EP0960231 B1 EP 0960231B1
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EP
European Patent Office
Prior art keywords
motor
winding
laundry treating
current
stator
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Expired - Lifetime
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EP98906957A
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German (de)
English (en)
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EP0960231A2 (fr
EP0960231B2 (fr
Inventor
Peter Rode
Frank Horstmann
Helmut Scheibner
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Miele und Cie KG
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Miele und Cie KG
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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors

Definitions

  • the invention relates to a laundry treatment device such as a washing machine and dryer or washer dryer with a rotatably mounted drum with at least approximately horizontal axis of rotation, and with a drive motor arranged on the drum shaft in Form of a permanent magnet excited synchronous motor, the stator with a winding is provided, which is powered by a converter, the winding is designed as a single-pole winding and the number the stator poles and the magnetic poles are unequal.
  • a washing machine is known from WO-A-98/00902.
  • a washing machine is already known from DE 38 19 651 A1, in which without use the usual intermediate drive (drive belt, pulley) directly to the laundry drum is driven. In these drives, the rotor forms the rotary motion transmission part to the drum of the washing machine.
  • DE 38 19 651 A1 proposes an asynchronous motor to use with a squirrel cage. Such an engine is characterized by a relatively quiet run, but it has the disadvantage that among the given Boundary conditions such as B. large air gap and multi-pole version in asynchronous machines good efficiencies are not possible. Especially with a frequently operated household appliance however, there is a desire for an environmentally friendly, i.e. H. energy-saving Operation.
  • a motor according to the preamble of claim 1 is known from DE 43 41 832 A1. There is described a motor driving the drum directly, the converter-fed synchronous motor is executed. No further details are given on the type of engine.
  • Washing machines with directly driving motors are also known, which are external rotor motors are constructed (DE 44 14 768 A1, DE 43 35 966 A1, EP 413 915 A1, EP 629 735 A2).
  • the rotor can be used as a deep-drawn part, as a plastic bell or in a composite construction getting produced.
  • the solution as a deep-drawn part is advantageous, since the iron is used at the same time forms the magnetic inference.
  • This design is also a typical one Execution of fan motors.
  • collectorless DC motors are used used.
  • Their stator winding can either be used as a conventional three-phase winding with a winding step over several stator teeth or as a single pole winding Winding around a stator tooth.
  • the current is applied to this type of motor with power semiconductors. The individual are dependent on the rotor position
  • Synchronous motors with sinusoidal current and controlled via a converter are already available as Servo drives known. They are used where precise positioning is required is.
  • the stator winding is a classic three-phase winding executed, and the number of poles of rotor and stator are identical.
  • the three-phase winding is characterized by common and known winding techniques, but has the Disadvantage that the copper volume is very large, especially in the winding heads, which the Manufacturing costs increased and the depth of the engine increased. The latter would be the case with washing machines reduce the drum volume with a given housing depth.
  • Servo drives for controlled operation of very precise and expensive sensors Detection of the rotor position
  • the invention therefore presents the problem in the case of a laundry treatment machine at the outset mentioned type the engine in terms of energy consumption, noise and costs to optimize. According to the invention, this problem is solved by a laundry treatment device solved the features specified in claim 1. Advantageous configurations and Further developments of the invention result from the following subclaims.
  • DC motors are used for all three winding phases the three-phase excitation winding is continuously energized, the frequency of the excitation field is specified by the electronics.
  • the motor is considered to be externally managed Synchronous motor operated. This procedure guarantees the lowest noise level in connection with a permanent magnet excited synchronous motor.
  • the use of the single-pole winding means that the copper input is less than that of one classic three-phase winding, especially the copper volume of the winding heads is clear lower. This makes the entire drive smaller and more compact. By the lesser Copper volumes can be higher for the same motor size due to lower copper losses Efficiency can be achieved.
  • stator poles With a pole ratio of 4 to 3, the use of approximately 30 stator poles is favorable in order to to cover the required speed range from 0 to 2000 1 / min.
  • the selected number of poles ensures a safe start-up with external operation, low torque ripple and a large speed spread.
  • control device for regulating the motor current mathematical model of the motor is based and when energizing the winding phases done without the rotor position encoder. Since the detection of the motor current and the Voltage on the motor in the frequency converter itself can take place, there are no sensors on Motor required.
  • a sensorless control it can be used continuously or continuously the mathematical model is calibrated.
  • the engine-specific parameters such as winding resistance, motor inductance and constant of the induced voltage can with the help of the current sensors and the microprocessor control determined in the frequency converter and the mathematical model based on the measured Values are adjusted.
  • the main advantage of the laundry treatment device designed according to the invention results the possibility of dimensioning the number of turns of the stator windings in such a way that the amount of the induced voltage or the magnet wheel voltage for high speeds greater than is the maximum output voltage of the frequency converter.
  • Such a winding design enables field weakening operation of the synchronous motor in the higher speed range.
  • the advantage of this winding design is a significant reduction in the motor current in the washing operation. You can be chosen such that the engine in the washing and Spin operation can be operated with the same current. Because of the lesser Motor currents can therefore use smaller and cheaper power semiconductors become. In addition, the losses in the power semiconductors are reduced, as a result of which Overall efficiency of the motor and power electronics is higher than that of comparable ones Drives with the same copper insert.
  • field weakening can also be used with high-pole permanent-magnet excitation Synchronous motors achieve good efficiencies at high speeds because of the magnetic loss be reduced as a result of the field weakening.
  • Collectorless DC motors can only be operated with extensive field weakening be changed, since then the position of the rotor position encoder or the commutation times should be postponed arithmetically.
  • a field weakening operation is deactivated for servo drives not known for the aforementioned reasons.
  • the washing machine shown in Figure 1 has a housing (1) in which a tub (2) is suspended on springs (3) so that it can move. To dampen the vibrations it is supported against the bottom of the housing (1) by friction dampers (5).
  • a drum (6) for receiving laundry (not shown) rotatably mounted.
  • Drum (6), tub (2) and the front wall of the housing (1a) have corresponding openings through which the items to be washed enter the drum (6) can be filled.
  • the openings can be opened through a front wall (1a) arranged door (7) are closed.
  • the door (7) is locked by a electromagnetic locking device (8).
  • the door lock is in the drawing only shown schematically.
  • the structure and functioning of an electromagnetic Closure device (8) itself is from the above.
  • DE-OS 16 10 247 or from the DE 34 23 083 C2 is well known and is therefore not described in detail.
  • a control panel (not shown), in which a Rotary selector switch (9) is used to select washing programs.
  • the washing programs include as is known, a wash cycle and a subsequent rinse cycle, in the course of which the laundry is spun several times.
  • the washing speed is at Household washing machines between 20 and 60 min-1, the spin speed should in particular be as high as possible during the last spin at the end of the wash cycle. It is through the resilience of the vibrating system suds container (2) - suspension (3; 5) drive motor (10) drum (6) has an upper limit, the limits are currently approximately 1600 min-1.
  • FIG. 2 shows a partial section through the rear area of a tub (2), one Drum (6) and its drive motor (10).
  • a four-armed bearing cross (11) shown in FIG. attached.
  • In the center of this bearing cross (11) there is a position hub (12) into the two Radial roller bearings (13a, b) are used. These roller bearings (13a, b) in turn serve for rotating Receiving a drive shaft (14) which is connected to the drum base (6a) in a rotationally fixed manner is.
  • the rear end (14a) of the drive shaft (14) protrudes from the position hub (12).
  • a permanent magnet rotor (15) designed as an external rotor is attached to it thus drives the drum (6) directly.
  • the stator (16) of the drive motor (10) is on the bearing cross (11) attached.
  • the stator laminated core (17) with the stator windings (18) is essentially ring-shaped.
  • Figure 4 shows the sheet section of a single stator sheet (17a).
  • the stator laminate stack (17) on the bearing cross has the individual laminations (17a), which are arranged on the inner peripheral surface and provided with through bores (19) are. Fastening screws (not shown) are guided through these bores (19) and screwed into threaded holes (26) on the bearing cross (11).
  • the holes (26) are arranged concentrically to the position hub (12). Their free ends have contact surfaces (20) for an end face of the stator laminated core (17). Centering the stator laminated core (17) takes place via radially designed stiffening ribs (21).
  • the rotor (15) consists of a pot-shaped deep-drawn part or an aluminum injection molded part (15a) with a hollow cylinder section (15b) which has an annular iron yoke (22) and the permanent magnets (23) attached to it as rotor poles (see a. Figure 5). Furthermore, the rotor (15) has a hub (24) which is connected to the free end (14a) Drive shaft (14) by a screw bolt (25) and a serration (not shown) is positively and thus non-rotatably connected.
  • the drive motor is designed as a permanent magnet excited three-phase synchronous motor.
  • Stator (16) is a three-strand single pole winding (tooth winding) housed, the Strands in a star connection (see. Fig. 5, 6) are connected.
  • the windings of the teeth (27) of a line are connected in series.
  • the drive motor is therefore a modular permanent magnet machine built up.
  • the pole ratio of rotor poles (23) to stator poles (27) is 4 to 3 with a number of 30 stator poles (27).
  • FIG. 6 shows a block diagram of the structure of the controlled drive with three-phase synchronous motor (10).
  • the speed of the motor (10) is specified as a setpoint by the program control (101) of the washing machine depending on the program set with the rotary selector switch (9, see FIG. 1)).
  • the program control (101) of the washing machine depending on the program set with the rotary selector switch (9, see FIG. 1)).
  • both the frequency of voltage and current and the amount of voltage in the stator windings (18) must be adjusted.
  • the motor current is additionally set as a function of the load torque.
  • at least two phase currents I 1 and I 2 are measured with current sensors (103a, b).
  • the aforementioned variables are adjusted via the frequency converter (104).
  • the mains voltage is first converted into a DC voltage via a rectifier (105) and smoothed over an intermediate circuit capacitor (106).
  • the DC voltage will converted by a three-phase inverter (107) on the output side to the stator winding (18) is connected. Since the DC link voltage is constant, the voltage set on the motor (10) via pulse width modulation. The rms value of the voltage can be changed over the pulse width.
  • a pulse pattern is selected through which sinusoidal currents form in the stator winding (18) of the motor (10).
  • the sinusoidal currents cause a very quiet running of the motor (10) and a reduction in those caused by current harmonics Losses.
  • the inverter (107) has one to influence the pulse pattern Microprocessor control rf (108) assigned in which a control (109) and a valve control (110) is integrated.
  • the control signals for the transistors of the inverter (107) are calculated on the basis of the respective rotor position in order to set the optimum orientation and strength of the rotating field at all times and thus to ensure a sufficient torque on the rotor (15). Because of the sinusoidal current supply to the synchronous motor (10) and the torque-dependent current control, continuous and accurate rotor position detection is required. Resolvers or analog Hall sensors (111) can be used for this. Hall sensors (111) should be preferred because of their low cost. In both cases, these are absolute measuring systems which provide precise information about the absolute position of the rotor (15) with respect to the stator (16) immediately after switching on.
  • a temperature influence on the remanent induction of the magnets (23) need not be taken into account, since in this case the output signals of both Hall sensors (111) are changed in the same way and in the same size.
  • FIG. 6 shows a block diagram of the structure of a control in which sensors for rotor position detection can be omitted.
  • the rotor position must be calculated by the microprocessor control (108). This takes place on the basis of a mathematical model (113) of the motor (10) stored in the control, in which the characteristic motor parameters such as winding resistance, motor inductance and induced voltage must be known.
  • the motor currents (I 1 , I 2 ) and the motor voltage U_ w are continuously recorded vectorially, ie according to the magnitude and phase position, the currents being measured with the sensors and the voltage being known on the basis of the pulse pattern generated by the valve control (110).
  • the respective operating point of the motor (10) can thus be determined precisely and the motor (10) can be operated with the minimum current required for the load torque. Since the detection of the motor current and the voltage on the motor (10) can take place in the frequency converter (104) itself, no further sensors on the motor (10) are required.
  • the sensorless control either takes place or as required continuously adjusting the parameters of the mathematical model (113).
  • a Such calibration may be necessary if there are engine-specific parameters (Winding resistance, motor inductance and induced voltage) by heating the Change motors (10) during operation.
  • the winding resistance and induced Voltage are strongly temperature-dependent quantities.
  • both the instantaneous winding resistance can be (and thus the temperature of the motor) as well as the motor inductance determine if the voltage at the motor (10) is known and the current through the sensors (103a, b) is measured in the frequency converter (104).
  • the number of turns of the stator winding (18) is dimensioned such that at higher speeds the magnet wheel voltage and the induced voltage of the synchronous motor (10) are higher than that Output voltage or the intermediate circuit voltage of the frequency converter (104).
  • This Design enables operation with field weakening at higher speeds.
  • the field weakening enables the engine (10) in two operating points with different speeds and different moments, e.g. Washing and spinning, with about operate the same motor current.
  • field weakening is a weakening of that of the permanent magnets (23) of the rotor (15) generated field in the air gap by a in the stator (16) understand generated field with appropriate strength and phase position.
  • field weakening are pole wheel voltage and motor current not in phase, but the phase current rushes Flywheel tension ahead.
  • the angle between the stator flow and the rotor field is at Field weakening greater than 90 ° (electrical).
  • the current points in addition to the force-generating Component in the transverse axis on a negative stator longitudinal current component that the Runner field is opposite.
  • the phase current can be vectorially divided into a force-generating and a field-forming component are disassembled, with the force-forming component in phase with the magnet wheel voltage and the field-forming component is directed towards the rotor field and this weakens.
  • the current sensors (103a, b) can be used in at least two Phases capture the phase current, the torque-forming component of the current in the Set the transverse axis and the stator longitudinal current component separately.
  • the drive can also operate in the field weakening range with minimal current and optimal efficiency operate.
  • Sensing and controlling the motor current is in operation with Field weakening is advantageous because the negative longitudinal current component is too large the magnets are irreversibly weakened by the field generated by the stator flooding can be.
  • the rotor position or the position of the rotor field is determined using the measured phase currents and with the mathematical model (113) of the motor (10) calculated.
  • the rotor position can therefore only be determined as long as the motor (10) is energized becomes.
  • the rotating field specified by the frequency converter (104) becomes continuous reduced in frequency and amplitude until standstill is reached. Become the winding strands of the motor (10) even at a standstill, at least partially, energized and the rotor (15) held in position, the next start can be made immediately and smoothly in the specified one Direction of rotation.
  • the spout can also take place unguided or de-energized.
  • the drive described further enables reversing without or with only a small amount Reversierpause. This is in washing machines that use a drive belt as an intermediate drive have, not easily possible. These washing machines are commonly used Universal motors are used as drives that run out uncontrolled or braked. in this connection If the engine is switched off, the engine coasts down or swings out Washing drum. To avoid increased wear and noise from the drive belt, after switching off until the motor is switched on again until the washing drum has definitely reached a standstill. These downtimes in washing machines with drive belts are typically 2 to 4 seconds. By the Eliminating these previously usual and necessary breaks in reversing operation results in the direct drive described here shortens the washing time.
  • a laundry treatment device has a device to evaluate the voltage induced by the rotor (15) during the runout.
  • the current speed can be inferred from this voltage.
  • a voltage is induced in the stator winding (18) of the motor (10).
  • the height and frequency are proportional to the rotor speed.
  • the induced voltage can be used to sense drum rotation.
  • a washing machine with a Electromagnetically or electromechanically locked door can induce the voltage to Operation of the closure device (8) can be used. This makes it easy to use additional speed sensors a state-dependent, secure locking of the door (7) possible.
  • Such an application is common in washing machines with permanent magnet excitation Rotors possible and therefore not limited to the invention Embodiment.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Control Of Ac Motors In General (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Control Of Multiple Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (14)

  1. Machine pour traiter le linge telle que lave-linge, sèche-linge ou lave-linge intégrant un sèche-linge, comprenant un tambour (6) monté de façon rotative qui comporte un axe de rotation au moins approximativement horizontal, et un moteur d'entraínement (10) placé sur l'arbre du tambour, qui a la forme d'un moteur synchrone (10) activé par des aimants permanents dont le stator (16) est muni dune bobine (18) alimentée en courant par un convertisseur, sachant que la bobine (18) est réalisée en tant que bobine unipolaire et que le nombre de pôles du stator (27) est différent du nombre de pôles des aimants (23), caractérisée en ce que l'on utilise en tant que convertisseur un convertisseur de fréquence (104) dont la tension de sortie est réglée de telle manière que des courants continus se forment dans tous les brins de la bobine.
  2. Machine pour traiter le linge selon la revendication 1, caractérisée en ce que le rotor (15) est réalisé en tant que rotor à induit extérieur.
  3. Machine pour traiter le linge selon la revendication 1 ou 2, caractérisée par un dispositif de commande (108) qui règle la tension de sortie du convertisseur de fréquence à l'aide d'un dispositif de régulation (109) de telle manière qu'un courant moteur sinusoïdal minimal soit produit en fonction du couple résistant.
  4. Machine pour traiter le linge selon la revendication 3, caractérisée en ce que la tension de sortie se présente sous la forme dune modulation de largeur d'impulsion qualifiée de sinusoïdale.
  5. Machine pour traiter le linge selon la revendication 4, caractérisée en ce que la bobine (18) du stator est réalisée sous la forme dune bobine à trois brins et en ce que les pôles des aimants (23) et les pôles du stator (27) se situent dans un rapport de 2 à 3 ou de 4 à 3.
  6. Machine pour traiter le linge selon la revendication 5, caractérisée en ce que le nombre de pôles du stator est d'environ 30.
  7. Machine pour traiter le linge selon Tune des revendications 1 à 6, caractérisée en ce que le dispositif de commande (108) pour régler le courant du moteur se fonde sur un modèle mathématique (113) du moteur (10) et en ce que les brins de la bobine (18) sont alimentés en courant sans utiliser de capteurs de position du rotor.
  8. Machine pour traiter le linge selon la revendication 7, caractérisée par des capteurs pour déterminer des paramètres variables spécifiques au moteur, lets que la résistance de la bobine, l'inductance du moteur et la constante de la tension induite, sachant que les valeurs mesurées doivent permettre de corriger les valeurs de référence correspondantes du modèle mathématique (113) dans le dispositif de commande (108).
  9. Machine pour traiter le linge selon la revendication 7 ou 8, caractérisée en ce que le rotor (15) marchant sur son erre durant le lavage peut être positionné de telle sorte qu'après s'être arrêté, il puisse redémarrer sans tarder en tournant en sens inverse.
  10. Machine pour traiter le linge selon l'une des revendications 1 à 6, caractérisée en ce que les brins de la bobine sont alimentés en courant en utilisant les signaux de sortie analogiques de deux capteurs de Hall (111), sachant que ces signaux de sortie sont calibrés en ce qui concerne leurs variations en fonction du temps ou de l'état par un dispositif de correction (112).
  11. Machine pour traiter le linge selon Tune des revendications 1 à 10, caractérisée en ce que le nombre de spires des bobines (18) du stator est tel que la valeur de la tension induite ou la force électromotrice synchrone est supérieure à la tension de sortie maximale du convertisseur de fréquence (104).
  12. Machine pour traiter le linge selon Tune des revendications 1 à 11, caractérisée en ce qu'à régime élevé, le moteur (10) est alimenté en courant avec affaiblissement de champ sans utiliser les capteurs de position du rotor (capteurs de Hall 111) qui sont éventuellement présents.
  13. Machine pour traiter le linge notamment selon Tune des revendications 1 à 12, caractérisée par un dispositif (8) pour exploiter la tension induite par le rotor (15).
  14. Machine pour traiter le linge selon la revendication 13 avec une porte verrouillée par voie électromagnétique ou électromécanique (7), caractérisée en ce que la porte (7) peut être fermée par le dispositif (8).
EP98906957A 1997-02-17 1998-02-17 Appareil de traitement de lessive avec un moteur d'entrainement monte sur l'arbre du tambour Expired - Lifetime EP0960231B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19706184 1997-02-17
DE19706184 1997-02-17
PCT/EP1998/000902 WO1998036123A2 (fr) 1997-02-17 1998-02-17 Appareil de traitement de lessive avec un moteur d'entrainement monte sur l'arbre du tambour

Publications (3)

Publication Number Publication Date
EP0960231A2 EP0960231A2 (fr) 1999-12-01
EP0960231B1 true EP0960231B1 (fr) 2002-05-15
EP0960231B2 EP0960231B2 (fr) 2012-01-25

Family

ID=7820597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98906957A Expired - Lifetime EP0960231B2 (fr) 1997-02-17 1998-02-17 Appareil de traitement de lessive avec un moteur d'entrainement monte sur l'arbre du tambour

Country Status (8)

Country Link
US (1) US6341507B1 (fr)
EP (1) EP0960231B2 (fr)
JP (1) JP2001511674A (fr)
KR (1) KR100436152B1 (fr)
AT (1) ATE217655T1 (fr)
DE (2) DE19806258A1 (fr)
ES (1) ES2176972T3 (fr)
WO (1) WO1998036123A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982425B2 (fr) † 1998-08-17 2007-08-29 Miele & Cie. KG Appareil de traitement du linge
DE102015101043A1 (de) 2015-01-26 2016-07-28 Miele & Cie. Kg Frequenzumrichter für einen elektrischen Motor, mechatronisches System und Waschmaschine

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TW470801B (en) * 1999-03-31 2002-01-01 Toshiba Corp Drum type washing machine
TW472094B (en) 1999-05-19 2002-01-11 Toshiba Corp Rolling drum type washing machine
DE29910332U1 (de) * 1999-06-10 2000-10-26 Struckmeier GmbH Antriebstechnik, 65527 Niedernhausen Elektrischer Antriebsmotor für Arbeitsmaschinen, insbesondere für Extruder oder Spritzgießmaschinen
US6341509B1 (en) * 1999-09-03 2002-01-29 Kryptonite Corporation Tie lock assemblage with replaceable lock mechanism
DE50002576D1 (de) * 1999-09-28 2003-07-24 Miele & Cie Wäschebehandlungsmaschine mit einer fliegend gelagerten Trommel
AU782017B2 (en) * 1999-10-18 2005-06-30 Lg Electronics Inc. A driving unit for a drum type washing machine
AU753411B2 (en) * 1999-10-19 2002-10-17 Lg Electronics Inc. Structure of driving unit in drum type washing machine
DE19963703A1 (de) * 1999-12-29 2001-07-05 Bsh Bosch Siemens Hausgeraete Antriebsvorrichtung für eine Waschmaschine
KR100370010B1 (ko) * 2000-04-19 2003-02-05 엘지전자 주식회사 드럼세탁기의 구동부
KR100348626B1 (ko) * 2000-09-28 2002-08-13 엘지전자주식회사 세탁기의 포량감지장치
DE10054947A1 (de) * 2000-11-06 2002-05-08 Bsh Bosch Siemens Hausgeraete Verfahren und Vorrichtung zum Behandeln von Wäsche
DE10060633A1 (de) * 2000-12-06 2002-06-13 Bsh Bosch Siemens Hausgeraete Trommelwaschmaschine
DE10064549A1 (de) * 2000-12-22 2002-06-27 Bsh Bosch Siemens Hausgeraete Trommelwaschmaschine mit verbesserter Wasch- oder Spülflüssigkeitszufuhr in die Innentrommel
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EP0960231A2 (fr) 1999-12-01
ES2176972T3 (es) 2002-12-01
EP0960231B2 (fr) 2012-01-25
DE59804137D1 (de) 2002-06-20
JP2001511674A (ja) 2001-08-14
WO1998036123A2 (fr) 1998-08-20
KR20000069295A (ko) 2000-11-25
ATE217655T1 (de) 2002-06-15
DE19806258A1 (de) 1998-08-20
US6341507B1 (en) 2002-01-29
WO1998036123A3 (fr) 1998-11-19
KR100436152B1 (ko) 2004-06-18

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