EP2412864A2 - Appareil de traitement du linge - Google Patents

Appareil de traitement du linge Download PDF

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Publication number
EP2412864A2
EP2412864A2 EP11005578A EP11005578A EP2412864A2 EP 2412864 A2 EP2412864 A2 EP 2412864A2 EP 11005578 A EP11005578 A EP 11005578A EP 11005578 A EP11005578 A EP 11005578A EP 2412864 A2 EP2412864 A2 EP 2412864A2
Authority
EP
European Patent Office
Prior art keywords
laundry
vibration
electric motor
controller
power supply
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.)
Withdrawn
Application number
EP11005578A
Other languages
German (de)
English (en)
Other versions
EP2412864A3 (fr
Inventor
Hartmut Wauer
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP2412864A2 publication Critical patent/EP2412864A2/fr
Publication of EP2412864A3 publication Critical patent/EP2412864A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance

Definitions

  • the present invention relates to a laundry treatment appliance, in particular a laundry treatment appliance with an active vibration damping system.
  • a laundry treatment device such as a washing machine, a tumble dryer or a washer dryer typically has a tub (also referred to as a wash tub), a laundry drum rotatably mounted in the tub, and an electric motor for driving the laundry drum.
  • the tub is held, for example via a plurality of vibration damper movable in the housing of the laundry treatment appliance.
  • an unevenly distributed load applied to the circumference of the laundry drum can cause unwanted movements of the tub, which can lead to a movement of the same, but at least to an undesirable noise at a rigid coupling of the tub to the outer wall of the laundry treatment device.
  • a laundry treatment device in which the inner unit via at least one spring, which is secured between the housing and preferably the upper portion of the tub, and at least one friction damper, which secures between the tub and the lower portion of a side wall or the bottom of the housing is suspended, vibrationally suspended.
  • the springs and friction dampers form the vibration and damping system of the laundry treatment appliance.
  • Friction dampers in their simplest form consist of an outer body (e.g., tube) and a plunger, preferably plastic, coaxially displaceable therein or coaxially therewith.
  • a rubber-like, porous pad is inserted between the plunger and the outer body, which may be saturated with grease or a fat-like liquid. The object of this pad is to increase the friction between the plunger and the outer body and to convert the kinetic energy of, for example, a tub in frictional heat.
  • This type of friction damper is also called “free-lift friction damper”.
  • the properties of these friction dampers can be influenced by the choice of the contours of the friction surfaces and are substantially constant over the life of the laundry treatment device apart from natural aging processes.
  • Such a free-lift friction damper is for example in the DE 40 14 166 A1 described.
  • the EP 0 878 574 B1 discloses a method for actively dampening vibrations in a laundry treating appliance.
  • the friction damper in this case contain a magnetorheological medium, the rheological properties (eg viscosity) can be changed by applying a magnetic field, so as to influence the damping properties of the friction damper.
  • a speed deviation of the electric motor is detected and generates a control signal when a threshold value for this speed deviation is exceeded.
  • This control signal generates a magnetic field inside the friction damper whose flux density is proportional to the actuating signal and thus to the extent of the rotational speed deviation.
  • controllable friction dampers are not yet used as standard in laundry treatment equipment, since in a power failure their functionality is lost or severely limited because the magnetorheological Liquid without excitement is typically low viscosity and consequently can cause no or only low damping properties. Particularly in the case of large imbalances, in the event of a power failure due to the further rotation of the laundry drum, very great deflections of the tub can occur, which can lead to damage to the laundry treatment appliance and cause disturbing noises.
  • the invention has for its object to provide a laundry treatment device with an actively controllable vibration damping, which ensures a safe leakage of the laundry drum even with a malfunction of the power supply.
  • the laundry treating appliance includes: a laundry treating device having a rotatably mounted laundry drum, the laundry treating device being movably supported in a housing of the laundry treating appliance; an electric motor for rotationally driving the laundry drum; a controller for driving the electric motor, the controller being connectable to a power supply; at least one vibration sensor for detecting a vibration movement of the laundry treating apparatus; and at least one vibration damping device for damping a vibration movement of the laundry treatment device.
  • the vibration damping device has at least one controllable vibration damper, which can be controlled by the control as a function of the vibration movement of the laundry treatment device detected by the at least one vibration sensor in order to change its vibration damping properties.
  • the controller is designed such that it controls the electric motor in a malfunction of the power supply connected to it such that it gains electrical energy from a rotational movement of the laundry drum and this control of And, depending on the vibration movement of the laundry treating device detected by the vibration sensor, drives the at least one vibration damper to dampen vibration movement of the laundry treating device and / or drives the electric motor to brake the rotary motion of the laundry drum.
  • the laundry treating appliance of the invention includes an actively controllable vibration damping system. This is only functional if the (engine) control and the vibration damping system are supplied with electrical energy. In order to prevent imbalance of the laundry treating apparatus in case of malfunction of the power supply (e.g., power failure), causing no damage to the laundry treating appliance, the vibration damping system is kept functional even in such a malfunction of the power supply.
  • the vibration damping system is kept functional even in such a malfunction of the power supply.
  • the (motor) control is designed such that, in the event of a malfunction of the power supply connected to it, it controls the electric motor in such a way that it gains electrical energy from a rotary movement of the laundry drum and makes it available to the control.
  • Electric motors can act as a power generator and induce a voltage that is available via the motor connection lines of the control through the further rotating laundry drum in the event of a power failure in the stator winding.
  • the DC link of the motor control electrical energy can be supplied. So the engine control can maintain their functionality even in case of power failure, as long as the expiring laundry drum kinetic energy is available.
  • the (engine) control is therefore designed such that, in the event of a malfunction of the power supply in response to the vibration movement of the laundry treatment device detected by the vibration sensor, it activates the at least one vibration damper to dampen a vibration movement of the laundry treatment device and / or drives the electric motor, to brake the rotary motion of the laundry drum.
  • the electrical energy induced in the electric motor is preferably stored intermediately in an energy store of the electric motor or the engine control.
  • the "laundry treatment device”, sometimes referred to as an internal unit in the prior art described above, contains in particular the rotatably mounted laundry drum for receiving the laundry to be washed and / or dried and usually the tub or laundry tub for receiving the laundry drum.
  • vibration sensor a sensor for directly detecting a vibration or a device for determining a vibration movement from other parameters such as speed, torque or power consumption of the electric motor can be used.
  • the vibration sensor is a movement of the laundry treatment device or its tub
  • the “vibration damping device” has at least one (actively) controllable vibration damper. That the vibration damping device may have one, two, three, four or more controllable vibration dampers and also have further vibration dampers with non-variable damping properties.
  • the motor control according to the invention is designed such that it in a malfunction of the power supply connected to the electric motor so that it obtains electric power from a rotational movement of the laundry drum and provides it to the controller, and controls the at least one vibration damper in response to the vibration movement of the laundry treatment device detected by the vibration sensor to dampen a vibratory movement of the laundry treatment device, and / or the Electric motor controls to brake the rotational movement of the laundry drum.
  • At least one speed and / or torque sensor for detecting a rotational speed, a rotational speed fluctuation, a torque and / or a torque fluctuation of the electric motor is further provided.
  • the controller is then also designed such that it controls the electric motor and / or the at least one vibration damper in the event of a malfunction of the power supply connected to it as a function of the measured variable detected by the at least one rotational speed and / or torque sensor.
  • At least one device for detecting a phase position of an imbalance of the laundry drum.
  • the controller is then designed in such a way that the electric motor and / or the at least one vibration damper in the event of a malfunction of the power supply connected to it also in dependence on the detected phase position of the imbalance, i. phase-dependent to the position of the imbalance drives.
  • the control of the damping properties of the at least one controllable vibration damper is preferably carried out in an anticipatory manner to the position of the imbalance of the laundry treatment device.
  • the engine control can take the optimum security measures even in case of malfunction of the power supply to prevent damage to the laundry treatment appliance.
  • the laundry treatment appliance also has a door locking device.
  • the controller is then preferably designed such that it controls the door lock device in the event of a malfunction of the power supply connected to it as a function of the measured variable detected by the speed and / or torque sensor. So even with a power failure can be prevented that the door lock is released as long as the laundry drum still rotates or too fast rotates.
  • the controller is preferably also designed to detect a malfunction of the power supply connected to it.
  • the controller can respond without loss of time to a malfunction of the power supply and initiate the necessary safeguards.
  • a malfunction of the power supply can be achieved by monitoring the input voltage and frequency.
  • the engine control itself by this functionality of the engine control when the malfunction of the power supply is corrected again.
  • the motor control can then optionally independently return to the normal control of the electric motor.
  • the at least one controllable vibration damper of the vibration damping device is preferably an electrically controllable friction damper.
  • it is a friction damper with a magnetorheological or electroviscous medium (in particular liquid).
  • friction dampers in which the frictional forces of two opposing, contacting friction surfaces can be varied by electromechanical change of the contact pressure.
  • friction dampers may be used in which a flow passage between two adjacent chambers filled with a fluid (eg, air or liquid) may be narrowed or widened to alter the damping characteristics.
  • a fluid eg, air or liquid
  • the use of a switchable capillary pore membrane or the like is also conceivable.
  • the method for operating a laundry treatment appliance in particular a laundry treatment appliance of the invention described above, is characterized in that the controller controls the electric motor in case of malfunction of the power supply connected to it so that it gains electrical energy from a rotary movement of the laundry drum and this control of Provides, and in response to a vibratory movement of the laundry treatment device, at least one vibration damper activates to dampen the vibration movement of the laundry treatment device, and / or controls the electric motor to brake the rotational movement of the laundry drum.
  • the controller controls the electric motor and / or the at least one vibration damper in the event of a malfunction of the power supply connected to it as a function of a rotational speed, a rotational speed fluctuation, a torque and / or a torque fluctuation of the electric motor.
  • the controller controls the electric motor and / or the at least one vibration damper in the event of a malfunction of the power supply connected to it as a function of a phase position of the imbalance of the laundry drum.
  • the motor control in the event of a malfunction of the power supply connected to it, the motor control also activates a door locking device of the laundry treatment device, preferably as a function of a rotational speed or a torque of the electric motor.
  • the present invention is applicable to any laundry treating appliances such as washing machines, clothes dryers and laundry dryers.
  • FIG. 1 exemplified laundry treatment device (eg a washing machine) 5 has in a known manner a tub 10 and a rotatably mounted in the tub 10 laundry drum 12 for receiving the laundry to be treated (load) on.
  • the tub 10 and the laundry drum 12 together form a laundry treatment device of the invention.
  • the laundry drum 12 is preferably equipped with a device for passive unbalance compensation (eg Kugelauswuchter).
  • the axis of rotation of the laundry drum 12 extends substantially horizontally (front loader) or vertically (top loader).
  • the laundry drum 12 is driven by an electric motor 14, wherein the drive axle drives either directly or indirectly, for example via a V-belt (drive connection 16).
  • the electric motor 14 is driven by a (motor) control 18, which is connected to a power supply or a network 19 for supplying energy.
  • the washing machine 5 still has a main controller 20, which is connected to the motor controller 18 and also to the network 19.
  • the (engine) controller 18 via the main controller 20 to the network 19 may be connected.
  • the laundry treating device 10-12 is held vibratable in the housing of the washing machine 5.
  • at least one spring 22 is provided, which is preferably fastened in the upper region between the tub 10 and the housing.
  • a vibration damping device is provided which has at least one vibration damper 24, which is preferably fastened in the lower region between the tub 10 and the housing of the washing machine 5.
  • the vibration dampers 24 are controllable vibration dampers whose damping properties can be actively controlled by the engine control unit 18. While during normal operation of the washing machine 5, these vibration dampers 24 can optionally also be actuated by the main controller 20, they must be able to be activated by the engine controller 18 in the event of a power failure (i.e., a malfunction of the power supply 19).
  • Friction dampers with a magnetorheological or electroviscous medium are preferably used for these controllable vibration dampers 24.
  • a magnetic field or a control voltage of these friction damper 24 can be influenced, causing a change in the at least one rheological or electroviscous property of the medium and thus the damping properties of the vibration damper 24.
  • the electric motor 14 (or optionally also the motor control 18) is equipped with a speed and / or torque sensor 26.
  • This speed and / or torque sensor 26 detects a rotational speed, a rotational speed fluctuation, a torque, a torque fluctuation or the like of the electric motor 14.
  • the power consumption of the electric motor 14 can also be detected.
  • At least one vibration sensor 28 is provided to detect a vibration movement of the laundry treatment device 10-12 in at least one spatial direction.
  • any sensors and devices which are known or are still known to the person skilled in the art and which measure at least one of the physical units travel / distance, speed or acceleration can be used for this purpose.
  • an acceleration sensor may be used as the vibration sensor 28.
  • the measurement results of the speed and / or torque sensor 26 and of the vibration sensor 28 are provided to the motor control 18, which then on the one hand the electric motor 14 and on the other hand the at least one controllable vibration damper 24 according to these measurement results and possibly other circumstances (eg current washing program, etc .). Furthermore, the engine control unit 18 can also control a door locking device 32, so that the washing machine door can only be opened when the laundry drum 12 no longer or no longer rotates too fast.
  • the main controller 20 and the motor controller 18 are directly ( FIG. 1 ) or in series ( FIG. 2 ), and the electric motor 14, the vibration damper 24 and the sensors 26, 28 are supplied via the motor controller 18 from the network 19 with electrical energy.
  • the main controller 20 In case of a malfunction of the power supply 19 (eg power failure), the main controller 20 after a few moments their operation and also the electric motor 14 is no longer supplied with power. In other words, there is no energy flow 30 to the electric motor 14 more.
  • the motor controller 18 is designed such that it detects such a power failure, for example, based on the mains input voltage and frequency and can therefore initiate appropriate security measures.
  • the motor controller 18 controls the electric motor 14 to function as a generator and to convert the kinetic rotational energy of the draining laundry drum into electrical energy, that of the motor controller 18, the controllable vibration dampers 24, the sensors 26, 28 and the door lock device 32 to provide (energy flow 30 to the engine controller 18 down).
  • the electrical energy induced in the electric motor 14 is preferably temporarily stored in an energy store of the electric motor 14 or the motor control 18.
  • the engine control 18 can thus ensure even with an expiring laundry drum 12 that this causes no damage to the washing machine even with existing imbalance.
  • the engine controller 18 may continue to drive the controllable vibration dampers 24 to dampen vibratory motion of the laundry treating device 10-12 and / or brake the electric motor 14.
  • the motor controller 18 can derive manipulated variables for at least one vibration damper 24 and the electric motor 14 from the measured variables of a speed and / or power fluctuation, a phase position of an imbalance and a movement of the tub.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP11005578.7A 2010-07-14 2011-07-08 Appareil de traitement du linge Withdrawn EP2412864A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010027158A DE102010027158B4 (de) 2010-07-14 2010-07-14 Wäschebehandlungsgerät

Publications (2)

Publication Number Publication Date
EP2412864A2 true EP2412864A2 (fr) 2012-02-01
EP2412864A3 EP2412864A3 (fr) 2015-11-11

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EP11005578.7A Withdrawn EP2412864A3 (fr) 2010-07-14 2011-07-08 Appareil de traitement du linge

Country Status (3)

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US (1) US20120011661A1 (fr)
EP (1) EP2412864A3 (fr)
DE (1) DE102010027158B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013209209A1 (de) 2013-05-17 2014-11-20 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit Energierückgewinnung und Verfahren zum Rückgewinnen von Energie in einem Haushaltsgerät
ITUB20153509A1 (it) * 2015-09-09 2017-03-09 Elbi Int Spa Apparecchio elettrodomestico, in particolare macchina lavatrice.

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
EP2864537A1 (fr) * 2012-06-25 2015-04-29 Illinois Tool Works Inc. Mécanisme de commande pour un entraînement de machine à laver incluant une détection d'accélération
US9518351B2 (en) * 2013-11-13 2016-12-13 Haier Us Appliance Solutions, Inc. Washing machine appliance
DE102014013717A1 (de) * 2014-09-16 2016-03-17 Diehl Ako Stiftung & Co. Kg Elektronisches Haushaltsgerät und Verfahren zum Betreiben eines elektronischen Haushaltsgeräts
CN109652948B (zh) * 2018-12-24 2023-07-04 珠海格力电器股份有限公司 减振俘能装置、滚筒洗衣机及滚筒振动控制方法
US11632604B2 (en) * 2019-05-22 2023-04-18 Samsung Electronics Co., Ltd. Sensor device and electronic device obtaining information from the sensor device

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DE4014166A1 (de) 1990-05-03 1991-11-07 Ako Werke Gmbh & Co Reibungsdaempfer
DE4431846C2 (de) 1994-09-07 2001-02-15 Diehl Ako Stiftung Gmbh & Co Verfahren zum beladungsabhängigen Steuern und/oder Regeln einer Waschmaschine oder eines Wäschetrockners
EP0878574B1 (fr) 1997-05-15 2002-06-19 Electrolux Zanussi S.p.A. Procédé pour l'amortissement actif des vibrations dans les machines à laver et machine à laver utilisant ce procédé
DE10234053C1 (de) 2002-07-26 2003-11-20 Diehl Ako Stiftung Gmbh & Co Verfahren zum Bestimmen der Unwucht einer Wäschetrommel
DE10345591B3 (de) 2003-09-29 2005-07-14 Diehl Ako Stiftung & Co. Kg Verfahren und Einrichtung zum Erfassen von unwuchtabhängigen Bewegungserscheinungen bei einer Wäschetrommel
DE102004053216B3 (de) 2004-06-18 2006-02-09 Diehl Ako Stiftung & Co. Kg Vorrichtung zur Erfassung einer Schwingbewegung einer Wäschetrommel
DE102005037144B4 (de) 2005-02-18 2007-04-19 Diehl Ako Stiftung & Co. Kg Schwingfähig aufgehängtes Innenaggregat einer Wäschebehandlungsmaschine mit einem Schwingungssensor

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US6036241A (en) * 1998-03-11 2000-03-14 Maytag Corporation Locking mechanism for an appliance door
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Publication number Priority date Publication date Assignee Title
DE4014166A1 (de) 1990-05-03 1991-11-07 Ako Werke Gmbh & Co Reibungsdaempfer
DE4431846C2 (de) 1994-09-07 2001-02-15 Diehl Ako Stiftung Gmbh & Co Verfahren zum beladungsabhängigen Steuern und/oder Regeln einer Waschmaschine oder eines Wäschetrockners
EP0878574B1 (fr) 1997-05-15 2002-06-19 Electrolux Zanussi S.p.A. Procédé pour l'amortissement actif des vibrations dans les machines à laver et machine à laver utilisant ce procédé
DE10234053C1 (de) 2002-07-26 2003-11-20 Diehl Ako Stiftung Gmbh & Co Verfahren zum Bestimmen der Unwucht einer Wäschetrommel
DE10345591B3 (de) 2003-09-29 2005-07-14 Diehl Ako Stiftung & Co. Kg Verfahren und Einrichtung zum Erfassen von unwuchtabhängigen Bewegungserscheinungen bei einer Wäschetrommel
DE102004053216B3 (de) 2004-06-18 2006-02-09 Diehl Ako Stiftung & Co. Kg Vorrichtung zur Erfassung einer Schwingbewegung einer Wäschetrommel
DE102005037144B4 (de) 2005-02-18 2007-04-19 Diehl Ako Stiftung & Co. Kg Schwingfähig aufgehängtes Innenaggregat einer Wäschebehandlungsmaschine mit einem Schwingungssensor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013209209A1 (de) 2013-05-17 2014-11-20 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit Energierückgewinnung und Verfahren zum Rückgewinnen von Energie in einem Haushaltsgerät
WO2014184056A1 (fr) 2013-05-17 2014-11-20 BSH Bosch und Siemens Hausgeräte GmbH Appareil électroménager à récupération d'énergie et procédé de récupération d'énergie dans un appareil électroménager
ITUB20153509A1 (it) * 2015-09-09 2017-03-09 Elbi Int Spa Apparecchio elettrodomestico, in particolare macchina lavatrice.
WO2017042684A1 (fr) * 2015-09-09 2017-03-16 Elbi International S.P.A. Appareil électroménager, en particulier un lave-linge

Also Published As

Publication number Publication date
EP2412864A3 (fr) 2015-11-11
DE102010027158A1 (de) 2012-01-19
US20120011661A1 (en) 2012-01-19
DE102010027158B4 (de) 2012-06-06

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