EP2582869B1 - Appareil ménager notamment lave-linge comportant un réservoir à lessive fixe - Google Patents

Appareil ménager notamment lave-linge comportant un réservoir à lessive fixe Download PDF

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Publication number
EP2582869B1
EP2582869B1 EP11724189.3A EP11724189A EP2582869B1 EP 2582869 B1 EP2582869 B1 EP 2582869B1 EP 11724189 A EP11724189 A EP 11724189A EP 2582869 B1 EP2582869 B1 EP 2582869B1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
household appliance
control device
magnet
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.)
Not-in-force
Application number
EP11724189.3A
Other languages
German (de)
English (en)
Other versions
EP2582869A1 (fr
Inventor
Hans Eglmeier
Andreas Hanau
Wilfried Wildung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL11724189T priority Critical patent/PL2582869T3/pl
Publication of EP2582869A1 publication Critical patent/EP2582869A1/fr
Application granted granted Critical
Publication of EP2582869B1 publication Critical patent/EP2582869B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • D06F37/206—Mounting of motor
    • 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
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/08—Driving arrangements
    • 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
    • D06F2103/44—Current or voltage
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting

Definitions

  • the invention relates to a household appliance, which has a rotatable component and a drive motor for driving the component, as well as a control device for driving the drive motor.
  • the drive motor comprises a stator with a first magnet arrangement and a rotor coupled with the component with a second magnet arrangement.
  • the rotor is rotatable relative to the stator, namely by interaction of magnetic fields generated by the magnet arrangements.
  • the invention also relates to a method for operating a household appliance.
  • a washing machine with a tub firmly connected to a housing.
  • a washing machine is for example from the document EP 1 433 890 A2 known.
  • the tub can be formed with respect to conventional washing machines enlarged dimensions.
  • the tub is rigidly connected to the housing.
  • a laundry drum is rotatably mounted, namely by means of a shaft.
  • the axis of rotation of the laundry drum can be arranged horizontally or slightly inclined in the washing machine.
  • the shaft is coupled to the rotor of a drive motor, the stator of which is held on a support part.
  • the support member closes the tub on a back; It is connected via an elastic seal with the tub. So the laundry drum is supported on the support member, namely by mediation of the shaft.
  • a household appliance in the form of a washing machine with a rotatably arranged in a tub drum comprises, for driving the drum, a drive motor which is preferably controlled by a frequency converter and which has a stator with a first magnetic field arrangement and a rotor indirectly coupled to the drum with a second magnetic field arrangement.
  • the magnetic field arrangements are arranged along the axis of rotation with an axial gap spaced from each other.
  • a domestic appliance is to be created in which the spatial position, in particular in the axial and / or radial direction, of a rotatable component of the household appliance is as simply as possible adjustable or controllable.
  • An inventive household appliance comprises a rotatable component, a drive motor for driving the component, as well as a control device for driving the drive motor.
  • the drive motor has a stator with a first magnet arrangement and a rotor coupled to the component with a second magnet arrangement.
  • the rotor is rotatable relative to the stator about an axis of rotation.
  • the magnet arrangements are arranged spaced apart from one another along the rotation axis, so that an axial gap is formed between the magnet arrangements.
  • control device is designed to generate a direct component of this magnetic field greater than zero when controlling a distribution of the magnetic field generated by the first and / or second magnetic field arrangement, in particular the magnet arrangement of the stator.
  • This coaxial arrangement thus arises solely on the basis of the magnetic fields of the magnet arrangements. This may, for example, be such that a predetermined pattern for the energization of the winding of the stator-that is, the rotating field produced-is superimposed with an additional constant magnetic field for all phase strands (offset).
  • the effect of the invention is achieved in that the first and the second magnet arrangement are arranged opposite each other in the axial direction side by side and thus form a gap between each other.
  • the electromagnetic fields and forces in the drive motor of the household appliance according to the invention form substantially in the axial direction.
  • Such a drive motor allows a variable and precise adjustment the torque required for the respective size or power level of the household appliance.
  • such a drive motor offers the advantage that the torque or the power density of the drive motor can be set variably without much effort.
  • the gap between the magnet arrangements can be formed differently wide; if this gap is very small, a higher torque is transferable than with a larger gap.
  • Such an embodiment of the drive motor By such an embodiment of the drive motor, this can also be easily adapted to the available space.
  • Such a drive motor also takes up less space than conventional drive motors and can be optimally adapted to the spatial installation conditions of a variety of household appliances.
  • a significant advantage of the household appliance according to the invention is that a radial movement of the rotor or the stator can be allowed without there being a risk of damage to the drive motor by a stop. It is particularly advantageous that not only the axial gap can be made variable, but on the power density of the drive motor or a variable torque, the position of the rotor of the motor can be influenced in its other spatial directions.
  • Such an axial arrangement of the two magnet arrangements to each other thus also allows an active radial adjustment of the axis of rotation of the rotor relative to the stator, which proves to be particularly advantageous in a washing machine.
  • a coaxial arrangement of the rotor with respect to the stator can be achieved.
  • the position of the rotor can be adjusted and / or vibrations or imbalances of the rotatable component can be actively compensated by corresponding control of the distribution of the magnetic fields.
  • a washing machine can thus be largely or even completely compensate for the decrease of the laundry drum relative to the tub.
  • the stator and the rotor can be mechanically completely decoupled from each other, so that a lateral movement - ie a movement in the radial direction - of these components against each other is possible.
  • the stator and the rotor thus preferably have a freedom of movement or clearance in the radial direction.
  • the household appliance is preferably a device for the care of laundry items, namely for example a washing machine, a tumble dryer or a washer-dryer. It is preferably a laundry drum of the household appliance, which is driven as a rotatable component by means of the drive motor.
  • a washing machine a tumble dryer or a washer-dryer.
  • the stator can be attached to a housing of the household appliance or on a fixedly connected to the housing tub while the rotor attached to the laundry drum or can be coupled with this.
  • the household appliance may have a tub firmly connected to a housing.
  • the tub is immobile or immovably connected to the housing and thus can not move relative to the housing.
  • the stator may be disposed on the tub or on the housing.
  • the position of the laundry drum can thus be advantageously adjusted independently of the weight of the laundry items to a central position within the tub.
  • the distance between the washing drum and the tub can be reduced. It thus becomes possible to minimize the amount of "dead liquor", that is, the amount of wash liquor which is not in contact with the laundry.
  • the disks or annular disks are preferably arranged concentrically to one another in an unloaded state of the rotatable component. They are preferably mechanically decoupled from each other and have a lateral freedom of movement to each other.
  • the magnet arrangements preferably each have a multiplicity of pole shoes on mutually facing sides. The axial distance between the magnet arrangements may, for example, be in a value range of 1 mm to 100 mm.
  • the drive motor may be, for example, a brushless DC motor or a permanent magnet synchronous motor. It is preferably the rotor that carries permanent magnets - then the magnet assembly of the rotor includes the permanent magnets.
  • the magnet arrangement of the stator can have a winding. This winding can have at least two phase strands, preferably three phase strands. These phase strings can be energized, for example, via an inverter; then the inverter provides one AC voltage for each phase string.
  • the inverter can be electrically coupled to an electrical DC link and provide the respective AC voltages from a DC link voltage. Such a DC link voltage may, for example, be applied to a DC link capacitor.
  • the inverter - and more specifically electrical switch of the inverter - can be controlled by the controller.
  • the controller may control the frequency and / or the amplitude of the AC voltages.
  • the drive motor can also be designed differently.
  • both magnetic field arrangements of the drive motor may have windings or the magnetic field arrangement of the stator includes the permanent magnets and the magnetic field arrangement of the rotor includes the windings.
  • the control device can detect at least one electrical measured variable of the drive motor.
  • the control device detects such an electrical measured variable which describes an induction taking place in at least one phase strand of the stator.
  • a measured variable is preferably detected, which is correlated with an electrical voltage induced in at least one phase strand of the stator by the change in the magnetic flux of the rotor.
  • the control device can detect an electrical voltage as a measured variable which is induced in a phase strand which is currently not actively energized.
  • the control device in at least one phase strand - preferably in all phase strands - detect an electrical string current.
  • the measurement of such a measured variable has the advantage that the control device can close back to the dynamic movement behavior of the rotatable component. For example, thus an imbalance of the rotatable component can be detected and optionally compensated by the control device, namely by appropriate control of the distribution of the magnetic field of the stator.
  • the control device can, for example, determine the respectively instantaneous radial and / or axial position of the rotor relative to the stator as a function of measured values for the detected measured variable.
  • the magnet arrangements of the drive motor are used as sensors for determining the position of the rotor; the drive motor can do without additional position sensors for the determination of the radial and / or axial position of the rotor. If the respective instantaneous position of the rotor relative to the stator is known, the control device can compensate for any deflections of the rotor from a desired position by appropriate control of the distribution of the magnetic field, in particular by appropriate control of the three-phase current in the winding of the stator. Thus, a stable movement behavior of the rotatable component can be achieved.
  • the control device may also infer an amplitude and / or a frequency and / or a phase of a deflection of the rotational axis of the rotor with respect to a reference axis.
  • the reference axis is preferably that axis which coincides with the actual axis of rotation when the rotatable component is stationary or, in the case of an unloaded component.
  • the reference axis is thus preferably by the position of the stator established. If the stator comprises a disk or annular disk which carries the magnet arrangement of the stator, then the reference axis can pass through a center or a center of the disk or the annular disk and perpendicular thereto.
  • the control device determines the amplitude and / or frequency and / or the phase of the deflection of the rotational axis of the rotatable component, it can counteract this deflection, namely by appropriate adjustment of the amplitude and / or the frequency and / or the phase of the rotating field of the stator.
  • the determination of an imbalance of the rotatable component takes place; This again turns out to be particularly advantageous in the case of a laundry drum of a domestic appliance for the care of items of laundry.
  • the control device can namely compensate for the unbalance, so that overall a stable movement behavior of the laundry drum and thus also a safe operation of the household appliance can be achieved.
  • the laundry items located in the laundry drum are mechanically less stressed, and it also increases the life and the life of the household appliance.
  • control device regulates a distribution of the magnetic field generated by the magnet arrangement of the stator according to a specification, namely as a function of measured values for the detected measured variable - for example, depending on measured values for the induced voltage and / or Measured values for the phase current.
  • a regulation can in fact be such or the specification may include that the amplitude of the deflection of the axis of rotation of the rotor with respect to the reference axis remains below a predetermined limit. It is thus possible, with a vibrating system - such as a laundry drum - to cut a portion of the vibration amplitude.
  • the specification for the regulation includes that the axis of rotation of the rotor coincides with the reference axis.
  • the regulation can be made in view of the fact that the magnet arrangement of the rotor and that of the stator are arranged coaxially with each other.
  • a regulation always ensures an optimal position of the rotatable component in the household appliance.
  • a digital spring and / or damper characteristic for the rotatable component can be predetermined.
  • the control device can then be designed to set the predetermined spring and / or damper characteristic curve for the component by appropriately controlling a distribution of the magnetic field generated by the magnet arrangement of the stator.
  • This embodiment is based on the recognition that the magnet arrangements of the stator on the one hand and the rotor on the other hand form a total of a spring or damper system whose elasticity can be set arbitrarily by the control device. This can in fact be done by a corresponding adjustment of the distribution of the rotating field, so for example by appropriate energization of the winding of the stator.
  • the actual physical spring-damper characteristic of a spring damper arrangement of the household appliance can be supplemented with the virtual spring and / or damper characteristic generated by the drive motor.
  • the actual spring-damper characteristic can be adjusted according to the situation and demand, namely, depending on the currently prevailing operating conditions.
  • the control device for example, depending on the amplitude of the deflection of the axis of rotation with respect to the reference axis - ie stroke-dependent - spring and / or damper characteristic and / or dependent on a loading of the rotatable component spring and / or damper characteristic and / or one of a Speed of the component dependent spring and / or damper characteristic for the rotatable component can be specified.
  • the stroke-dependent spring and / or damper characteristic may be, for example, a progressive characteristic.
  • a load-dependent spring and / or damper characteristic curve ensures an always optimal suspension and / or damping of the movement of the rotatable component, regardless of the respective instantaneous loading or loading of the component.
  • the desired spring constant and / or damper constant can each be set for different engine speed values; This is particularly advantageous with regard to a spin operation of washing machines.
  • a stroke-dependent - in particular a progressive - characteristic vibration peaks can be avoided, and the risk of a stop of the system can be reduced to a minimum.
  • a household appliance in which an always stable movement behavior of the rotatable component can be achieved regardless of their load.
  • a household appliance for the care of laundry such as a washing machine - especially with a fixed tub - can be achieved by the axial arrangement of the stator and the rotor relative to each other, a coaxially independent of the current load system running.
  • the control device can actively influence the dynamic behavior of the household appliance, in particular under the influence of imbalances and changing loads.
  • a rotatable component of the household appliance is driven by a drive motor.
  • a control device controls the drive motor.
  • the drive motor has a stator with a first magnet arrangement and a rotor coupled to the component with a second magnet arrangement.
  • the rotor is rotatable relative to the stator about an axis of rotation.
  • the magnet arrangements are arranged spaced apart from one another along the rotation axis, so that an axial gap is formed between the magnet arrangements.
  • a DC component of this magnetic field is generated greater than zero.
  • the drive motor 1 is a brushless DC motor or a permanent magnet synchronous motor.
  • the drive motor 1 comprises a Stator 2, as well as a rotor 3.
  • the stator 2 and the rotor 3 are arranged coaxially with each other, and the rotor 3 is located inside the stator 2 and the stator 2 surrounds the rotor 3.
  • the rotor 3 has permanent magnets 4, the are arranged distributed on a radial outer side of the rotor 3 in the circumferential direction in alternating polarity.
  • the stator 2 has at its radially inner side electromagnets 5, which are formed by a winding with a plurality of phase strands, for example with three phase strands.
  • a domestic appliance 6 is shown.
  • the household appliance 6 is a device for the care of laundry.
  • the household appliance 6 is a washing machine. It comprises a cuboidal housing 7, in which a passage opening 8 is formed, through which laundry items can be introduced into the household appliance 6.
  • the passage opening 8 can be closed in a conventional manner by means of a door.
  • the household appliance 6 also includes a tub 9, which is fixed or rigidly connected to the housing 7. The tub 9 can thus not move relative to the housing 7.
  • On a rear side 10 of the tub 9 is closed by means of a support member 11 which is connected to the tub 9 through the intermediary of an elastic seal 12.
  • the support member 11 is connected via a spring assembly 13 with an upper wall 14 of the housing 7; it is supported via a damper assembly 15 on a bottom 16 of the housing 7.
  • the spring assembly 13 may in principle have any number of springs; the damper assembly 15 may include any number of dampers, as well as dampers of different types. The position of the spring and damper assembly 13, 15 may vary depending on the design. Likewise, the springs may be integrated in the damper assembly.
  • a laundry drum 17 is rotatably mounted about a horizontal axis of rotation, wherein in alternative embodiments, the axis of rotation may also be arranged inclined.
  • a shaft 18 fixedly connected to the laundry drum 17 connects the laundry drum 17 to a rotor 19 of a drive motor 20.
  • the drive motor 20 also has a stator 21.
  • the shaft 18 extends through a through opening of the support member 11 and is supported on this support member 11, namely for example via a ball bearing.
  • the laundry drum 17, as well as the rotor 19 are rotatable about a rotation axis S. If the laundry drum 17 is loaded with items of laundry, a force acts on the laundry drum 17 due to the weight of the items of laundry. This force causes a sinking of the laundry drum 17 together with the rotor 19, as well as the support member 11.
  • the laundry drum 17 decreases relative to the tub 7, and the rotor 19 shifts radially relative to the stator 21.
  • the rotor 19 and the stator 21 are namely mechanically decoupled from each other and thus not mechanically centered.
  • the axis of rotation S then shifts downward, namely relative to the in Fig. 2 illustrated rotation axis S. In the in Fig.
  • the spring and damper assembly 13, 15 may be tuned such that the in Fig. 2 As shown starting position, ie the coaxial position of the rotor 19 and stator 21, only with an average amount or a household average amount of laundry items loaded laundry drum is achieved. It is advantageous that only in the event of an active control to achieve the coaxial position of the rotor 19 and stator 21 must be made when the amount of laundry items deviates from the average or household standard amount of laundry. Here by the loads of the components can be reduced.
  • the drive motor 20 is designed such that the rotor 19 and the stator 21 along the axis of rotation S are arranged spaced from each other. This means that between the rotor 19 and the stator 21, an axial air gap 22 is formed. This air gap 22 is free of components.
  • the stator 21 In the illustrated starting position of the laundry drum 17, the stator 21 is arranged parallel to the rotor 19, and a lateral movement of the rotor 19 with respect to the stator 21 is permitted. In such an axial arrangement of the rotor 19 and the stator 21 relative to each other due to the lateral freedom of movement, the risk of a stop or a shock of the rotor 19 against the stator 21 in a deflection of the laundry drum 17 is excluded.
  • stator 21 may be disposed on the fixed tub 9, namely in particular on a radial projection 23 of the tub 9. So the stator 21 may be disposed either on the housing 7 or on the tub 9.
  • the rotor 19 can also be arranged, for example, directly on the laundry drum 17-namely on a rear wall of the laundry drum 17.
  • the rotor 19 has a magnet arrangement 24, and the stator 21 likewise has a magnet arrangement 25.
  • the magnet assemblies 24, 25 each have axially oriented pole pieces which face each other. So the magnet assemblies 24, 25 face each other.
  • the magnet assembly 24 of the rotor 19 includes a plurality of permanent magnets, which are arranged distributed on a stator 21 facing the end face 26 of the rotor 19 in alternating polarity, namely, for example, along a ring.
  • the magnet assembly 25 of the stator 21 comprises a plurality of electromagnets, which are formed by a winding with, for example, three phase strands.
  • the electromagnets are also arranged on a rotor 19 facing the end face 27 of the stator 21. They can also be arranged along a ring.
  • FIGS. 3A and 3B show an exemplary embodiment of the drive motor 20 including the rotor 19 and the stator 21.
  • the rotor 19 and the stator 21 each comprise an annular disc 28 or 29, on which the associated magnet arrangement 24 or 25 is arranged.
  • the annular discs 28, 29 are arranged coaxially with each other, so that the respective centers of the annular discs 28, 29 lie on the reference axis S '.
  • phase strands of the rotor 21 can be energized simultaneously - namely with a direct current - so that centering forces according to the Arrow depiction P1, P2 arise.
  • the rotor 19 is moved back to its original position, so that the axis of rotation S coincides with the reference axis S '.
  • Such a coaxial arrangement of the rotor 19 relative to the stator 21 can also be maintained during the entire operation of the household appliance 6;
  • the rotating field of the magnet assembly 25 of the stator 21 can be superimposed with a DC component (offset), which then ensures the coaxial arrangement.
  • the magnet arrangement 25 of the stator 21 in the exemplary embodiment comprises three phase strings 30, 31, 32 which are electrically coupled to an inverter or inverter 33.
  • Inverter 33 provides an alternating electrical voltage for each phase string 30, 31, 32.
  • the inverter 33 generates these AC voltages by means of suitable switches, in particular by means of transistors.
  • the inverter 33 is driven by a control device 34, which is a microcontroller in the embodiment.
  • the inverter 33 is coupled to an electrical intermediate circuit 35, which has an intermediate circuit capacitor 36.
  • At the DC link capacitor 36 is a DC link DC voltage U Z on. From this DC link voltage U Z , the inverter 33 generates the AC voltage for the phase strands 30, 31, 32nd
  • the household appliance 6 has two electrical connections 37, 38, namely a phase connection and a zero connection.
  • the terminals 37, 38 are electrically coupled to a rectifier and line filter 39.
  • the rectifier 39 generates the DC link voltage U Z from an AC supply voltage U V , which is applied between the terminals 37, 38.
  • the DC link voltage U Z is provided between a circuit node 40 and a reference potential 41. Between the circuit node 40 and the reference potential 41 and the intermediate circuit capacitor 36 is connected.
  • Parallel to the intermediate circuit capacitor 36 is also a voltage divider 42 having a first and a second ohmic resistor 43, 44. A lying between the resistors 43, 44 tap node 45 is connected to a supply terminal of the control device 34.
  • the voltage divider 42 thus divides the DC link voltage U Z , and the controller 34 is supplied with the divided DC voltage.
  • the inverter 33 - and more particularly its transistors - is coupled on the one hand to the circuit node 40 and on the other hand via three measuring resistors 46, 47, 48 to the reference potential 41.
  • the control device 34 detects phase currents I 30 , I 31 , I 32 , which flow through the phase strands 30, 31, 32.
  • the control device 34 is coupled to three nodes 49, 50, 51 which respectively lie between one of the measuring resistors 46, 47, 48 and the inverter 33.
  • the controller 34 may also detect respective electrical voltages induced in the phase strands 30, 31, 32 due to the magnetic flux of the magnet assembly 24 of the rotor 19. Both the phase currents I 30 , I 31 , I 32 , as well as the measured induced voltages represent electrical variables of the drive motor 20, which are detected by the control device 34.
  • control device 34 can control the current flow through the phase strands 30, 31, 32 or the distribution of the magnetic field generated by the magnet arrangement 25 of the stator 21 in such a way that a coaxial arrangement of the rotor 19 relative to the stator 21 given is. This may, for example, be such that the control device 34 generates a direct component in the rotating field generated by the phase strands 30, 31, 32, by which means the centering forces are generated.
  • phase currents I 30 , I 31 , I 32 , and / or depending on measured values for the induced voltages - in particular depending on one in the each current not energized phase strand 30, 31, 32 induced voltage - determines the controller 34, the respective current radial and / or axial position of the rotor 19 relative to the stator 21 and the position of the rotation axis S relative to the reference axis S '. This can be determined by the control device 34 on the basis of the measured values, because the electrical measured variables mentioned depend directly on the extent of induction due to the magnetic flux of the magnet arrangement 24 of the rotor 19.
  • control device 34 determine the respective instantaneous position of the rotor 19 with respect to the stator 21.
  • the control device 34 can thus detect an imbalance of the laundry drum 17. It can be provided that the control device 34 determines an amplitude and / or a phase and / or a frequency of a deflection of the rotation axis S with respect to the reference axis S 'as a function of measured values for the above measured variable - such a deflection is for example in the FIGS. 4A and 4B shown.
  • the control device 34 can then counteract this deflection, namely by appropriate control of the inverter 33.
  • the control device 34 can also regulate the movement behavior of the laundry drum 17 in dependence on the detected measured values with regard to the fact that the rotation axis S coincides with the reference axis S '. Then, the laundry drum 17 always remains in the optimum position, so that the mechanical components of the household appliance 6 - in particular the storage - can be spared.
  • the magnet arrangement 24 of the rotor 19 and that of the stator 21 form a total of a spring or damper system.
  • the control device 34 also change the elasticity of such a spring and damper system beyond.
  • the elasticity can adjust the control device 34 while changing the rotating field of the magnet arrangement 25 or changing the currents I 30 , I 31 , I 32 .
  • the control device 34 namely, in a memory-characteristic curves can be stored or predetermined in this regard, which make it possible to set different degrees of elasticity of the spring system formed by the rotor 19 and the stator 21.
  • degrees of elasticity may depend on a current speed of the drive motor 20 and / or in response to a current load of the laundry drum 17 and / or in response to an amplitude of the deflection of the rotation axis S. can be varied with respect to the reference axis S '.
  • 34 load-dependent and / or speed-dependent and / or stroke-dependent spring and damper characteristics may be predetermined in the control device, according to which the control device 34 controls the rotating field of the magnet assembly 25.
  • the instantaneous elasticity of such a spring and damper system from the rotor 19 and the stator 21 can also be controlled by the control device 34, namely as a function of the detected measured values.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (13)

  1. Appareil ménager (6) avec un composant rotatif (17) et un moteur d'entraînement (20) pour entraîner le composant (17) qui présente un stator (21) avec un premier agencement d'aimants (25) et un rotor (19) couplé au composant (17) avec un deuxième agencement d'aimants (24), et avec un dispositif de commande (34) pour commander le moteur d'entraînement (20), dans lequel la synergie des champs magnétiques générés par les agencements d'aimants (24, 25) fait que le rotor (19) tourne autour d'un axe de rotation (S) par rapport au stator (21) et les agencements d'aimants (24, 25) sont disposés de manière espacée l'un par rapport à l'autre le long de l'axe de rotation (S), de sorte qu'une fente axiale (22) est créée entre les agencements d'aimants, caractérisé en ce que pour atteindre une disposition coaxiale du rotor (19) par rapport au stator (21), le dispositif de commande (34) est prévu, lors de la commande d'une répartition du champ magnétique généré par le premier et / ou le deuxième agencement d'aimants (24, 25), afin de générer une composante continue de ce champ magnétique supérieure à zéro.
  2. Appareil ménager (6) selon la revendication 1, caractérisé en ce qu'il s'agit d'un appareil ménager (6) pour l'entretien du linge et en ce que le composant (17) est un tambour (17) pour la réception du linge à laver.
  3. Appareil ménager (6) selon la revendication 2, caractérisé en ce qu'il présente un réservoir à lessive (9) relié de manière fixe à un bâti (7) de l'appareil ménager (6) et en ce que le stator (21) est disposé sur le réservoir à lessive (9) ou sur le bâti (7).
  4. Appareil ménager (6) selon l'une des revendications précédentes, caractérisé en ce que le stator (21) et le rotor (19) présentent des plaquettes ou plaquettes annulaires (28, 29) disposées parallèlement l'une par rapport à l'autre, lesquelles maintiennent les agencements d'aimants (24, 25) respectifs.
  5. Appareil ménager (6) selon l'une des revendications précédentes, caractérisé en ce que l'agencement d'aimants (24) du rotor (19) présente des aimants permanents et / ou l'agencement d'aimants (25) du stator (21) un bobinage, en particulier avec trois conducteurs de phase (30, 31, 32).
  6. Appareil ménager (6) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de commande (34) est prévu afin de saisir une grandeur de mesure électrique (I30, I31, I32) du moteur d'entraînement (20), en particulier via au moins un courant de phase électrique (I30, I31, I32) traversant un conducteur de phase (30, 31, 32) du stator (21) et / ou dans une tension électrique induite dans au moins un conducteur de phase (30,31, 32) du stator (21).
  7. Appareil ménager (6) selon la revendication 6, caractérisé en ce que le dispositif de commande (34) est prévu, en fonction de valeurs de mesure pour la grandeur de mesure (I30, I31, I32), afin d'en déduire la position radiale et / ou axiale momentanée respective du rotor (19) par rapport au stator (21).
  8. Appareil ménager (6) selon la revendication 6 ou 7, caractérisé en ce que le dispositif de commande (34) est prévu, en fonction de valeurs de mesure pour la grandeur de mesure (I30, I31, I32), afin d'en déduire une amplitude et / ou une fréquence et / ou une phase d'une déviation de l'axe de rotation (S) du rotor (19) par rapport à un axe de référence (S').
  9. Appareil ménager (6) selon l'une des revendications 6 à 8, caractérisé en ce que le dispositif de commande (34) est prévu, en fonction de valeurs de mesure pour la grandeur de mesure (I30, I31, I32), de réguler selon une prescription une répartition du champ magnétique généré par l'agencement d'aimants (25) du stator (21).
  10. Appareil ménager (6) selon la revendication 9, caractérisé en ce que la prescription englobe le fait que l'amplitude d'une déviation de l'axe de rotation (S) du rotor (19) par rapport à un axe de référence (S') demeure en-deçà d'une valeur limite déterminée au préalable, en particulier que l'axe de rotation (S) du rotor (19) coïncide avec l'axe de référence (S').
  11. Appareil ménager (6) selon l'une des revendications précédentes, caractérisé en ce qu'une caractéristique d'amortisseur et / ou d'atténuateur numérique pour le composant rotatif (17) peut être prédéterminée dans le dispositif de commande (34) et en ce que le dispositif de commande (34) est prévu, via un pilotage correspondant d'une répartition du champ magnétique généré par l'agencement d'aimants (25) du stator (21), afin de régler la caractéristique d'amortisseur et / ou d'atténuateur prédéterminée pour le composant (17).
  12. Appareil ménager (6) selon la revendication 11, caractérisé en ce qu'une caractéristique d'amortisseur et / ou d'atténuateur dépendant d'une amplitude d'une déviation de l'axe de rotation (S) par rapport à un axe de référence (S') et / ou d'un chargement des composants rotatifs (17) et / ou d'une vitesse de rotation des composants (17) peut être prédéterminée dans le dispositif de commande (34) pour les composants rotatifs (17).
  13. Procédé d'exploitation d'un appareil ménager (6) dans lequel un composant rotatif (17) est entraîné par un moteur d'entraînement (20), lequel présente un stator (21) avec un premier agencement d'aimants (25) et un rotor (19) couplé au composant (17) avec un deuxième agencement d'aimants (24), le moteur d'entraînement (20) étant commandé par un dispositif de commande (34), dans lequel la synergie des champs magnétiques générés par les agencements d'aimants (24, 25) fait que le rotor (19) tourne autour d'un axe de rotation (S) par rapport au stator (21) et les agencements d'aimants (25, 24) sont disposés de manière espacée l'un par rapport à l'autre le long de l'axe de rotation (S), de sorte qu'une fente axiale (22) est créée entre les agencements d'aimants (24, 25), caractérisé en ce que pour atteindre une disposition coaxiale du rotor (19) par rapport au stator (21), lors de la commande d'une répartition du champ magnétique généré par le premier et / ou le deuxième agencement d'aimants (24, 25), une composante continue de ce champ magnétique est générée supérieure à zéro.
EP11724189.3A 2010-06-16 2011-06-07 Appareil ménager notamment lave-linge comportant un réservoir à lessive fixe Not-in-force EP2582869B1 (fr)

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PL11724189T PL2582869T3 (pl) 2010-06-16 2011-06-07 Sprzęt gospodarstwa domowego, w szczególności pralka z nieruchomym pojemnikiem na mydliny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010030163A DE102010030163A1 (de) 2010-06-16 2010-06-16 Haushaltsgerät, insbesondere Waschmaschine mit einem unbeweglichen Laugenbehälter
PCT/EP2011/059328 WO2011157589A1 (fr) 2010-06-16 2011-06-07 Appareil ménager notamment lave-linge comportant un réservoir à lessive fixe

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EP2582869A1 EP2582869A1 (fr) 2013-04-24
EP2582869B1 true EP2582869B1 (fr) 2015-08-26

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EP (1) EP2582869B1 (fr)
CN (1) CN102939415B (fr)
DE (1) DE102010030163A1 (fr)
EA (1) EA023486B1 (fr)
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WO (1) WO2011157589A1 (fr)

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CN104911867B (zh) * 2014-03-10 2017-09-29 海尔集团技术研发中心 一种制动装置、具有此装置的洗衣机及洗衣机的控制方法
US10760196B2 (en) * 2015-04-23 2020-09-01 Lg Electronics Inc. Laundry treatment apparatus and magnetic gear device
DE102015213347A1 (de) * 2015-07-16 2017-01-19 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken mit einer Unwuchtausgleichsvorrichtung mit drehzahlabhängig magnetisch gehaltenen Kugeln und Verfahren zum Betreiben eines derartigen Haushaltsgeräts
DE102016211127A1 (de) * 2016-06-22 2017-12-28 BSH Hausgeräte GmbH Elektrische Maschine für ein Haushaltsgerät mit zumindest teilweise umspritzten Stator, Pumpe, Haushaltsgerät sowie Verfahren
DE102018209515A1 (de) * 2018-06-14 2019-12-19 BSH Hausgeräte GmbH Verfahren zum Betätigen einer Bedienvorrichtung, bei welchem zumindest ein Korrekturwert ermittelt wird, Bedienvorrichtung sowie Haushaltsgerät
CN109881439B (zh) * 2019-03-27 2020-07-07 珠海格力电器股份有限公司 一种磁悬浮控制装置、滚筒洗衣机及其磁悬浮控制方法
CN112458702A (zh) * 2020-11-18 2021-03-09 珠海格力电器股份有限公司 滚筒洗衣机

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Publication number Publication date
CN102939415B (zh) 2015-12-16
EA023486B1 (ru) 2016-06-30
EP2582869A1 (fr) 2013-04-24
WO2011157589A1 (fr) 2011-12-22
PL2582869T3 (pl) 2016-01-29
EA201291423A1 (ru) 2013-06-28
DE102010030163A1 (de) 2011-12-22
CN102939415A (zh) 2013-02-20

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