EP0960231B2 - 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
EP0960231B2
EP0960231B2 EP98906957A EP98906957A EP0960231B2 EP 0960231 B2 EP0960231 B2 EP 0960231B2 EP 98906957 A EP98906957 A EP 98906957A EP 98906957 A EP98906957 A EP 98906957A EP 0960231 B2 EP0960231 B2 EP 0960231B2
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EP
European Patent Office
Prior art keywords
motor
winding
laundry treating
stator
current
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EP98906957A
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German (de)
English (en)
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EP0960231A2 (fr
EP0960231B1 (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 arrangementsĀ 
    • D06F37/304—Arrangements or adaptations of electric motors

Definitions

  • the invention relates to a laundry treatment equipment such as washing machine, dryer or washer-dryer with a rotatably mounted drum with at least approximately horizontal axis of rotation, and with a arranged on the drum shaft drive motor in the form of a permanent magnet synchronous motor whose stator is provided with a winding which is energized by an inverter wherein the winding is designed as a single-pole winding and the number of stator poles and the magnetic poles is unequal.
  • a washing machine is out of the WO-A-98/00902 known.
  • An engine according to the preamble of claim 1 is known from DE 43 41 832 A1 known. There, a drum directly driving motor is described, which is designed as a converter-fed synchronous motor. Further information is not provided on the engine type.
  • washing machines with directly driving motors which are constructed as external rotor motors ( DE 44 14 768 A1 . DE 43 35 966 A1 . EP 413 915 A1 . EP 629 735 A2 ).
  • the rotor can be manufactured as a deep-drawn part, as a plastic bell or in a composite construction.
  • the solution is advantageous as a deep-drawn part, since in this case the iron simultaneously forms the magnetic inference.
  • this design is also a typical version of fan motors.
  • stator winding can be designed either as a conventional three-phase winding with a winding step over a plurality of stator teeth or as a single-pole winding with winding around a stator tooth.
  • the current application takes place in this type of motor with power semiconductors. In this case, depending on the rotor position, the individual
  • Strings of the stator winding is energized by an inverter, so that the exciter field rotates with the motor.
  • a current that is used for torque formation the third strand remains energized.
  • the temporal current course in the individual strands is block or trapezoidal. As a result, occur when switching on and off of the individual windings high rates of change of current, which generate noise on the engine. In laundry treatment appliances, which are partly placed in living rooms (kitchen, bathroom), such noises are undesirable.
  • Hall sensors For electronically commutated DC motors, Hall sensors, magnetic sensors or optical sensors are used to sense the rotor position.
  • the attachment of such sensors and the associated signal lines is associated with additional costs.
  • sensors and cables are prone to failure.
  • Another disadvantage is that in such self-commutated permanent magnet motors operation with field weakening is not readily possible.
  • the large torque and speed spreads between washing and spinning operation required in washing machines normally cause large spreads in the motor current. Therefore, reversible or tapped windings must be installed, or the motor winding and power semiconductors must be sized for the largest possible current.
  • Sinusoidally energized and regulated synchronous motors are already known as servo drives via an inverter. They are used where exact positioning is required.
  • the stator winding is designed as a classic three-phase winding, and the number of poles of rotor and stator are identical.
  • the three-phase winding is characterized by current and known winding techniques, but has the disadvantage that the volume of copper, especially in the winding heads is very large, which increases the Fertiguniety and increases the depth of the engine. The latter would reduce the drum volume in washing machines with a given case depth.
  • servo drives for controlled operation require very accurate and expensive sensors to detect the rotor position
  • the single-pole winding of the copper insert is lower than in a classic three-phase winding, in particular the copper volume of the winding heads is much lower. As a result, the entire drive is smaller and more compact. Due to the smaller copper volume higher efficiencies can be achieved with the same motor size due to lower copper losses.
  • a control device which adjusts the output voltage of the frequency converter by a control such that adjusts a minimum sinusoidal current depending on the load torque.
  • Sinusoidal currents cause a very quiet motor running and a reduction of the losses caused by current harmonics. This is the case in particular if the output voltage is set in the form of a sinusoidal pulse width modulation.
  • the torque-dependent current regulation guarantees optimum efficiency in every load point.
  • the number of magnetic poles differs characteristically from the number of stator poles.
  • a ratio of rotor poles to stator poles of 2 to 3 or of 4 to 3 is favorable. Only in these two cases does the vectorial addition of the voltages of a strand induced in the individual pole windings give a maximum and an optimum of efficiency.
  • stator poles With a pole ratio of 4 to 3, the use of about 30 stator poles is favorable in order to cover the required speed range of 0 to 2000 1 / min.
  • the selected number of poles ensures a safe start in externally controlled operation, a low torque ripple and a large speed spread.
  • control device for controlling the motor current is based on a mathematical model of the motor and if the energization of the winding strands takes place while dispensing with rotor position sensors. Since the motor current and the voltage at the motor can be detected in the frequency converter itself, no sensors are required on the motor.
  • a calibration of the mathematical model can take place if necessary or continuously.
  • the motor-specific parameters such as winding resistance, motor inductance and induced voltage constant can be determined by means of the already existing current sensors and the microprocessor control in the frequency converter and the mathematical model can be adapted on the basis of the measured values.
  • the main advantage of the present invention formed laundry treatment device results from the ability to dimension the number of turns of the stator windings such that the amount of induced voltage or the Polradschreib for high speeds is greater than the maximum output voltage of the frequency converter.
  • Such a winding design enables a field weakening operation of the synchronous motor in the higher speed range.
  • the advantage of this winding design is a significant reduction of the motor current in the washing mode. It can be chosen such that the motor can be operated in the washing and spinning with the same power. Due to the lower motor current smaller and less expensive power semiconductors can therefore be used. In addition, the losses in the power semiconductors are reduced, whereby the overall efficiency of motor and power electronics is higher than comparable drives with the same copper use.
  • Collectorless DC motors can be operated only with great difficulty with field weakening, since then changed the position of the rotor position sensor or the commutation times would have to be moved mathematically. In servo drives a field weakening operation for the aforementioned reasons is not known.
  • the washing machine shown has a housing (1) in which a tub (2) to springs (3) is suspended swinging. To damp the vibrations, it is supported against the bottom of the housing (1) by friction dampers (5).
  • a drum (6) for receiving laundry (not shown) is rotatably mounted in a known manner.
  • Drum (6), tub (2) and the housing front wall (1a) have corresponding openings through which the laundry can be filled in the drum (6).
  • the openings can be closed by a door (7) arranged on the housing front wall (1a).
  • the locking of the door (7) by an electromagnetic closure device (8).
  • the door lock is shown only schematically in the drawing.
  • 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 will therefore not be described in detail.
  • a control panel (not shown) is arranged, in which a rotary selector switch (9) is used to select washing programs.
  • the wash programs are known to include a wash and a subsequent rinse during which the laundry is spun several times.
  • the washing speed is in household washing machines between 20 and 60 min-1, the spin speed should be as high as possible, especially at the last spin to the end of the rinse cycle. It is limited by the capacity of the oscillating system tub (2) - suspension (3; 5) drive motor (10) drum (6) upwards, the limits are currently at about 1600 min-1.
  • FIG. 2 shows a partial section through the rear portion of a tub (2), a drum (6) and its drive motor (10).
  • an edge projection (2a) which is formed by the jacket (2b) of the tub (2) and a folded edge of its bottom (2c)
  • In the center of this bearing cross (11) is a LĆ¼mabe (12), in the two radial rolling bearings (13a, b) are used. These rolling bearings (13a, b) in turn serve to rotatably receive a drive shaft (14) which is non-rotatably connected to the drum base (6a).
  • the rear end (14a) of the drive shaft (14) protrudes from the position hub (12). It is attached to a trained as an external rotor permanent magnet rotor (15) and thus drives the drum (6) directly.
  • the stator (16) of the drive motor (10) is attached to the bearing cross (11).
  • FIG. 4 shows the lamination of a single stator lamination (17a).
  • the individual sheets (17a) For attachment of the laminated stator core (17) to the bearing cross, the individual sheets (17a) have fastening eyes, which are arranged on the inner circumferential surface and provided with through-holes (19). Through these holes (19) fixing screws (not shown) out and screwed into threaded holes (26) on the bearing cross (11).
  • the bores (26) are arranged concentrically to the bearing hub (12). Their free ends have bearing surfaces (20) for an end face of the laminated stator core (17).
  • the centering of the laminated stator core (17) takes place via radially formed stiffening ribs (21).
  • the rotor (15) consists of a cup-shaped deep-drawn part or an aluminum injection molded part (15a) with a hollow cylinder section (15b) which contains an annular iron yoke (22) and the permanent magnets (23) mounted thereon as rotor poles (see also FIG. 5 ). Furthermore, the rotor (15) has a hub (24) which is connected to the free end (14a) of the drive shaft (14) by a screw bolt (25) and a serration (not shown) form-fitting and thus rotationally fixed.
  • the drive motor is designed as a permanent magnet-excited three-phase synchronous motor.
  • a three-strand Einzelpolwicklung (Zahnbewicklung) is housed, the strands in a Star connection (s. Fig. 5 . 6 ) are connected.
  • the windings of the teeth (27) of a strand are connected in series.
  • the drive motor is thus constructed as a modular permanent magnet machine.
  • the pole ratio of rotor poles (23) to stator poles (27) is 4 to 3 at 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 dependent on the with the rotary selector switch (9, s. Fig. 1 )) set as a target value of the program control (101) of the washing machine.
  • the program control (101) of the washing machine To influence the engine speed, 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. For this purpose, at least two phase currents I 1 and I 2 are measured with current sensors (103 a, b).
  • the mains voltage is converted into a DC voltage via a rectifier (105) and smoothed via a DC link capacitor (106).
  • the DC voltage is converted by a three-phase inverter (107), which is connected on the output side to the stator winding (18). Since the intermediate circuit voltage is constant, the voltage at the motor (10) is adjusted via a pulse width modulation.
  • the rms value of the voltage can be changed over the pulse width.
  • a pulse pattern is selected by which sinusoidal currents are formed in the stator winding (18) of the motor (10). One therefore speaks of a sinusoidal pulse width modulation.
  • the inverter (107) is assigned a microprocessor control unit (108) in which a controller (109) and a valve controller (110) are integrated.
  • the calculation of the control signals for the transistors of the inverter (107) takes place on the basis of the respective rotor position in order to set the optimum orientation and strength of the rotary field at all times and thus to ensure a sufficient torque on the rotor (15).
  • resolvers or analog Hall sensors (111) can be used. Hall sensors (111) are to be preferred because of their low price. In both cases, they are absolute measuring systems which provide accurate information about the absolute position of the rotor (15) with respect to the stator (16) immediately after switching on.
  • Such a correction can be effected by storing the analogue output signals of both Hall sensors (111) in a correction device (112) integrated in the microprocessor control (108) during a rotor revolution, and then determining the mean value and maximum and minimum from the stored values , If the average value is known, then an offset can be corrected, while the sensitivity and the temperature drift can be corrected on the basis of maximum and minimum.
  • 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 can be dispensed with sensors for rotor position detection.
  • the rotor position must be calculated by the microprocessor controller (108). This is done on the basis of a mathematical model (113) of the motor (10) stored in the controller, 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 vectorially, ie detected by magnitude and phase, the currents are measured with the sensors and the voltage is known due to the generated by the valve driver (110) pulse pattern.
  • the respective operating point of the motor (10) can be determined accurately 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 at the motor (10) in the frequency converter (104) itself can be done, no further sensors on the motor (10) are required.
  • an adjustment of the parameters of the mathematical model (113) takes place either as required or continuously.
  • Such a calibration may be required if the motor-specific parameters (winding resistance, motor inductance and induced voltage) change during operation due to heating of the motor (10).
  • the winding resistance and induced voltage are strongly temperature-dependent quantities.
  • the machine Since the machine is operated as a separately driven synchronous motor (10), it is important that the output frequency of the frequency converter (104) during startup of the motor (10) is low. Typical are turn-on frequencies from 0.1 to 1 Hz. This ensures, in conjunction with the high number of poles of the motor (10), even under load a safe and smooth start.
  • the number of turns of the stator winding (18) is dimensioned such that at higher speeds, the Polradschreib and the induced voltage of the synchronous motor (10) are higher than the output voltage or the DC link voltage of the frequency converter (104).
  • This design allows operation with field weakening at higher speeds.
  • the field weakening allows the motor (10) to operate at two operating points at different speeds and at different moments, e.g. Washing and spinning operation to operate with about the same motor current.
  • weakening of the field generated by the permanent magnets (23) of the rotor (15) in the air gap is to be understood as weakening of the field by a field having a corresponding strength and phase position generated in the stator (16).
  • the pole wheel voltage and the motor current are not in phase, but the phase current is ahead of the pole wheel voltage.
  • the angle between stator flux and rotor field becomes greater than 90 Ā° (electric) in case of field weakening.
  • the current has, in addition to the force-forming component in the transverse axis, a negative stator longitudinal current component which is opposite to the rotor field.
  • the strand current can be vectorially decomposed into a force-forming and a field-forming component, wherein the force-forming component is in phase with the Polradbeginn and the field-forming component is opposite to the rotor field and this weakens.
  • the current-forming component of the current in the transverse axis and the stator longitudinal current component can be adjusted separately from one another with the aid of the current sensors 103a, b, which detect the phase current in at least two phases.
  • the drive can also be operated in the field weakening range with minimal power and optimum efficiency.
  • a sense and control of the motor current is advantageous in operation with field weakening, since too large a negative stator longitudinal component, the magnets can be irreversibly weakened by the field generated by the stator flooding field.
  • the rotor position or the position of the rotor field is calculated with the aid of the measured phase currents and with the mathematical model (113) of the motor (10).
  • the rotor position can therefore only be determined as long as the motor (10) is energized.
  • the specified by the frequency converter (104) rotating field is continuously reduced in frequency and amplitude until the standstill is reached. If the winding strands of the motor (10) also at standstill, at least partially, energized and the rotor (15) thereby held in position, the next start-up can take place immediately and smoothly in the predetermined direction of rotation.
  • the spout can also be unguided or unenergized.
  • the drive described also allows reversing without or with only a short reversing pause. This is not readily possible in washing machines which have a drive belt as an intermediate drive. In these washing machines usually universal motors are used as a drive, which expire unregulated or unbraked. This happens after switching off the engine to a coasting or swinging out of the laundry drum. In order to avoid increased wear and noise of the drive belt, wait until the engine has been switched off before switching off the engine, until the washing drum has certainly reached standstill. These downtimes on washing machines with drive belt are typically 2 to 4 seconds. Due to the elimination of these usual and necessary breaks in the reversing result in the direct drive described here shortening of the washing time.
  • a further advantageous embodiment of a laundry treatment appliance has a device for evaluating the voltage induced by the rotor (15) during the outflow. Based on this tension can be closed to the current speed. As long as the motor (10) rotates, a voltage is induced in the stator winding (18) of the motor (10). Height and frequency are proportional to the rotor speed. The induced voltage can be used to sense the drum rotation. In a washing machine with an electromagnetically or electromechanically locked door, the induced voltage can be used to operate the shutter (8). As a result, a state-dependent, secure locking of the door (7) is possible in a simple manner without the use of additional speed sensors. Such an application is generally possible in washing machines with permanent magnet rotors and is therefore not limited to the embodiment of the invention.

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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)
  • Treatment Of Fiber Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Control Of Multiple Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (14)

  1. Machine pour traiter le linge telle que lave-linge, sĆØche -linge ou lave-linge intĆ©grant un sĆØche-linge, comprenant un tambour (6) montĆ© de faƧon rotative qui comporte un axe de rotation au moins approximativement horizontal, et un moteur d'entraĆ®nement (10) placĆ© sur l'arbre du tambour, qui a la forme d'un moteur synchrone (10) activĆ© par des aimants permanente dont le Stator (16) est muni d'une bobine (18) alimentĆ©e en courant par un convertisseur, sachant que la bobine (18) est rĆ©alisĆ©e en tant que bobine unipolaire et que le nombre de pĆ“les du stator (27) est diffĆ©rent du nombre de pĆ“les des aimants (23), caractĆ©risĆ©e en ce que l'on utilise en tant que convertisseur un convertisseur de frĆ©quence (104) dont la tension de sortie est rĆ©glĆ©e de teile maniĆØre que des courants continus se forment dans tous les brins de la bobine.
  2. Machine pour traiter le linge selon la revendication 1, caractƩrisƩe en ce que le rotor (15) est realise en tant que rotor Ơ induit extƩrieur.
  3. Machine pour traiter le linge selon la revendication 1 ou 2, caractĆ©risĆ©e par un dispositif de commande (108) qui rĆØgle la tension de sortie du convertisseur de frĆ©quence Ć  l'aide d'un dispositif de rĆ©gulation (109) de telle maniĆØre qu'un courant moteur sinusoĆÆdal minimal soit produit en fonction du couple rĆ©sistant.
  4. Machine pour traiter le linge selon la revendication 3, caractĆ©risĆ©e en ce que la tension de sortie se prĆ©sente sous la forme d'une modulation de largeur d'impulsion qualifiĆ©e de sinusoĆÆdale.
  5. Machine pour traiter le linge selon la revendication 4, caractƩrisƩe en ce que la bobine (18) du stator est rƩalisƩe sous la forme d'une bobine Ơ trois brins et en ce que les pƓles des aimants (23) et les pƓles du stator (27) se situent dans un rapport de 2 Ơ 3 ou de 4 Ơ 3.
  6. Machine pour traiter le linge selon la revendication 5, caractƩrisƩe en ce que le nombre de pƓles du stator est d'environ 30.
  7. Machine pour traiter le linge selon l'une des revendications 1 Ć  6, caractĆ©risĆ©e en ce que le dispositif de commande (108) pour rĆ©gler le courant du moteur se fonde sur un modĆØle mathĆ©matique (113) du moteur (10) et en ce que les brins de la bobine (18) sont alimentĆ©s en courant sans utiliser de capteurs de position du rotor.
  8. Machine pour traiter le linge selon la revendication 7, caractĆ©risĆ©e par des capteurs pour dĆ©terminer des paramĆØtres variables spĆ©cifiques au moteur, tels que la rĆ©sistance de la bobine, l'inductance du moteur et la constante de la tension induite, sachant que les valeurs mesurĆ©es doivent permettre de corriger les valeurs de rĆ©fĆ©rence correspondantes du modĆØle mathĆ©matique (113) dans le dispositif de commande (108).
  9. Machine pour traiter le linge selon la revendication 7 ou 8, caractĆ©risĆ©e en ce que le rotor (15) marchant sur son erre durant le lavage peut ĆŖtre positionnĆ© de telle sorte qu'aprĆØs s'ĆŖtre arrĆŖtĆ©, il puisse redĆ©marrer sans tarder en tournant en sens inverse.
  10. Machine pour traiter le linge selon l'une des revendications 1 Ć  6,
    caractƩrisƩe en ce que les brins de la bobine sont alimentƩs en courant en utilisant les signaux de sortie analogiques de deux capteurs de Hall (111), sachant que ces signaux de sortie sont calibrƩs en ce qui concerne leurs variations en fonction du temps ou de l'Ʃtat par un dispositif de correction (112).
  11. Machine pour traiter le linge selon l'une des revendications 1 Ć  10,
    caractƩrisƩe en ce que le nombre de spires des bobines (18) du Stator est tel que la valeur de la tension induite ou la force Ʃlectromotrice synchrone est supƩrieure Ơ la tension de sortie maximale du convertisseur de frƩquence (104).
  12. Machine pour traiter le linge selon l'une des revendications 1 Ơ 11, caractƩrisƩe en ce qu'Ơ rƩgime ƩlevƩ, le moteur (10) est alimentƩ en courant avec affaiblissement de champ sans utiliser les capteurs de position du rotor (capteurs de Hall 111) qui sont Ʃventuellement prƩsents.
  13. Machine pour traiter le linge selon l'une des revendications 1
    Ơ 12, caractƩrisƩe 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 verrouillĆ©e par voie Ć©lectromagnĆ©tique ou Ć©lectromĆ©canique (7), caractĆ©risĆ©e en ce que la porte (7) peut ĆŖtre fermĆ©e 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 EP0960231B1 (fr) 2002-05-15
EP0960231B2 true EP0960231B2 (fr) 2012-01-25

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ID=7820597

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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) DE59804137D1 (fr)
ES (1) ES2176972T3 (fr)
WO (1) WO1998036123A2 (fr)

Families Citing this family (46)

* Cited by examiner, ā€  Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982425B2 (fr) ā€  1998-08-17 2007-08-29 Miele & Cie. KG Appareil de traitement du linge
DE19849594C1 (de) * 1998-10-27 2000-03-30 Miele & Cie Waschmaschine oder Waschtrockner
KR100539513B1 (ko) * 1998-12-29 2006-02-28 ģ—˜ģ§€ģ „ģž ģ£¼ģ‹ķšŒģ‚¬ ė“œėŸ¼ģ„øķƒźø°ģ˜ ė² ģ–“ė§ ģ§€ģ§€źµ¬ģ”°
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 fĆ¼r Arbeitsmaschinen, insbesondere fĆ¼r Extruder oder SpritzgieƟmaschinen
US6341509B1 (en) * 1999-09-03 2002-01-29 Kryptonite Corporation Tie lock assemblage with replaceable lock mechanism
ES2197849T3 (es) * 1999-09-28 2004-01-16 MIELE & CIE. KG Maquina para el tratamiento de la colada con un tambor apoyado en voladizo.
US6460382B1 (en) * 1999-10-18 2002-10-08 Lg Electronics Inc. Structure of driving unit in drum type washing machine
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ES2176972T3 (es) 2002-12-01
ATE217655T1 (de) 2002-06-15
JP2001511674A (ja) 2001-08-14
US6341507B1 (en) 2002-01-29
KR100436152B1 (ko) 2004-06-18
EP0960231B1 (fr) 2002-05-15
DE59804137D1 (de) 2002-06-20
WO1998036123A3 (fr) 1998-11-19
DE19806258A1 (de) 1998-08-20
WO1998036123A2 (fr) 1998-08-20
KR20000069295A (ko) 2000-11-25

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