EP1607729A1 - Dispositif pour la détection d'un mouvement oscillatoire d'un tambour d'une machine à laver - Google Patents

Dispositif pour la détection d'un mouvement oscillatoire d'un tambour d'une machine à laver Download PDF

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Publication number
EP1607729A1
EP1607729A1 EP05012067A EP05012067A EP1607729A1 EP 1607729 A1 EP1607729 A1 EP 1607729A1 EP 05012067 A EP05012067 A EP 05012067A EP 05012067 A EP05012067 A EP 05012067A EP 1607729 A1 EP1607729 A1 EP 1607729A1
Authority
EP
European Patent Office
Prior art keywords
transmitter
axis
rotation
sensor
sensor part
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Withdrawn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
EP05012067A
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German (de)
English (en)
Inventor
Martin Weinmann
Roman-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 EP1607729A1 publication Critical patent/EP1607729A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the invention relates to a device for detecting a swinging motion the axis of rotation of a vibratory suspended indoor unit Washing machine with an electric motor driven laundry drum.
  • the internal unit of a washing or spinning machine comprises a Lye container with rotatably mounted laundry drum and a Drive unit in the form of an electric motor, the laundry drum often over drives a reduction gear or a transmission.
  • the indoor unit is suspended vibratory in a machine or machine housing and provides a damped overall oscillatory system that can be determined in Areas of the engine speed overdriven speed of the Drum drum is subject to unbalance dependent resonance phenomena. This is due to swinging movements due to momentary imbalances in the Loading the laundry drum.
  • Such swinging movements due to imbalances can in the program flow a washing or spinning machine through a targeted Wäscheverteilphase be countered ,.
  • the control program for the drum drive is only then to an increased speed for dehumidifying and spin-drying the Laundry in the laundry drum switched on, if in the course of such Wäscheverteilphase the imbalances balanced or at least one for the Initiation of increased speeds suitable degree have been reduced.
  • a so-called Use tachogenerator as rotary encoder. This is connected to the motor shaft and generates one of the respective rotational speeds of the laundry drum corresponding signal voltage whose frequency is proportional to the speed. The signal delivered by the tachogenerator thus provides the actual speed the laundry drum, depending on the imbalance of the laundry in the laundry drum fluctuates.
  • a tachogenerator as a rotary encoder thus detects those Components of a swinging motion of an oscillating suspended indoor unit a washing machine, resulting in a corresponding angular acceleration or torque fluctuation around this axis of rotation.
  • the invention is based on the object, a particularly suitable device for detecting a swinging motion of a vibrationally suspended indoor unit a washing machine with an electric motor driven Specify laundry drum.
  • the transmitter and the sensor part set a Measured variable available, which periodically with the speed of rotation and periodically with the oscillatory motion in at least one direction (x, y, z), d. H. in the axial direction (x) and / or in the radial direction (y, z) varies.
  • the Actuator or the sensor part is expediently axially or radially movable, for example, slidably mounted.
  • the invention is based on the consideration that a particularly reliable Detecting a swinging movement of the axis of rotation and thus the Complete system or indoor units of a washing machine can be achieved can, if in addition to a directly detectable speed change reflecting oscillating motion about the axis of rotation also a Swinging movement is detected by at least one other axis, not with the defined by the bearing shaft of the engine or the washing drum Rotation axis coincides.
  • the sensor part and the transmitter part an acceleration sensor whose transmitter expediently with the rotor of the electric motor or with the drum bearing axis is connected.
  • the acceleration sensor to have the functionality of a Speed sensor or encoder imply. Otherwise, supply and / or Signal lines of the acceleration sensor at least partially common lines of an existing rotary encoder. This will at least The wiring effort is significantly reduced.
  • the transmitter of the Acceleration sensor in the axial direction or the sensor part in axial or sensitive in the radial direction and designed such that this is the speed proportional or representative of this encoder signal in the form of a Modulation of the pulse width, the frequency or the amplitude influence.
  • the transmitter or the sensor part with respect to the engine or Drum bearing axis and thus with respect to the axis of rotation axially or radially displaceable.
  • the acceleration sensor with an axially displaceably mounted and expediently in its displaceability limited by two stops transmitter and a Sensor part realized in the form of a fixed fork light barrier.
  • this optical embodiment may also be changes of other physical Sizes are recorded, which oscillate periodically with the laundry drum. So for example, a reflective, photoelectric, electromagnetic or piezoelectric embodiment of the acceleration sensor is provided be.
  • the common basic principle is that advantageously the ratio one specified by the transmitter, expediently tooth or changed hole-like division due to a swinging motion. Because of a as a result of a swinging movement resulting axial or radial displacement of the transmitter or a part thereof relative to the stationary Sensor part thus results, for example, in one embodiment with two Attacks on these in each case a different division or divisor ratio.
  • These Changes to the divider ratio vary periodically with the Oscillation of the Laugenbottichs. This in turn is reflected in one In particular, digitally controlled or controlled washing machine drive in a change of the clock-pause ratio and thus the clock rate of at a detection of the speed generated speed or encoder signal again.
  • Fig. 1 shows schematically in an end view against a loading opening opposite rear side of a machine housing 1 a below as well
  • a washing machine or a spin dryer in the machine housing 1 via springs 3 and Friction damper 4 is suspended vibratory.
  • the indoor unit 2 includes a so that it can be vibrated and elastically damped suspended liquor vat 5 and a rotatably mounted in particular in the rear wall washing or Laundry drum 6 and a driving this electric motor 7.
  • axis of rotation bearing or motor shaft 8 extends at least approximately parallel to the drum or bearing axis and thus to Rotary axis 9 of the laundry drum 6, wherein the axes of rotation 8, 9 with respect to the shown Cartesian coordinate system in the x direction.
  • acceleration sensor 10 device for detection of oscillatory movements, in the expediently also the functionality a speed sensor is integrated or implied, is in the embodiment provided on the rotary or bearing axis 8 of the electric motor 7.
  • the acceleration sensor 10 may also be analogous in the area of the axis of rotation 9 the laundry drum 6 may be arranged. It may, for example electronic accelerometer 10 regardless of the inclination of the Laundry drum 6, the z. B. inclined by up to 15 ° relative to the horizontal can be in a defined, arbitrary angle to the footprint of the Be mounted washing machine.
  • a rotary encoder or sensor signal S I supplied by the acceleration sensor 10 and expediently also representing the engine or drum rotational speed ⁇ can be fed to an evaluation or control device 11.
  • the device 11 can in turn deliver a control variable or a control signal S D to the electric motor 7 for speed adjustment or control.
  • the degree of drum loading can also be detected by means of the sensor signal S I or its change, since this sensor or rest signal of the acceleration sensor 10 changes with the filling of the laundry drum 6.
  • the acceleration sensor 10 includes a hereinafter also referred to as actuator transducer 12 and a Sensor part 13.
  • the sensor part 13 is stationary with respect to the transmitter 12. It can be mounted on a rigid part of the electric motor 7.
  • the Sensor part 13 can also in the tangential direction (y, z) - here in the z direction - be mobile. This is especially in an engine concept without separate Speedometer and sensorless motor 7 expedient, where the current Speed information obtained from the motor current and possibly the sensor for a Deflection is used in another axis.
  • This first actuator part 15 coaxially surrounds with the Drive or bearing axis 8 of the electric motor 7 and thus with the axis of rotation nadostarr connected second actuator part 16 and is parallel to this to the rotation axis 8, 9 slidably.
  • the movable (first) actuator part 15 with the least possible friction on the torsionally rigid (second) actuator part 16 along the axis of rotation 8, 9 in the x direction can move are the two to be connected actuator parts 15, 16 stored in grooves 17 and 18 running balls 19.
  • the length of the introduced into the movable actuator part 15 Groove 17 is greater than or equal to the sum of two frontal spacing gaps 20, 21 between the two actuator parts 15 and 16.
  • the actuator ring 14 extending in the axial direction (x-direction) is connected to the movable actuator part 15 formed on the front side.
  • This actuator ring 14 can formed as a tooth profile 22 according to FIG. 3a sawtooth-shaped teeth be that can taper from the crown floor to the tooth-liberating.
  • the actuator ring 14 of FIG. 3b also with hole cutouts as Be executed hole profile 23.
  • Essential in the design of the Actuator ring 14 is that in each case a profile page 22a, 23a as variables is formed, while the respective other profile side 22b and 23b parallel to Rotary axis 8, 9 runs, so that in total, for example, a sawtooth profile is created.
  • the Opening width is wider than the thickness of the actuator ring 14 and its opening depth is greater than the sum of the two spacings or spacing column 20 and 21.
  • the fork light barrier 13 is such arranged that their active components in the center position of the movable Actuator 15 also illuminate the actuator ring 14 centered.
  • the illustrated parts of the acceleration sensor 10 can not in closer illustrated manner of a housing at least partially be enclosed to the actuator or transmitter 12 and the sensor part 13 to protect against contamination.
  • both the rotationally or rotationally rigid actuator part 16 and the rotationally movable actuator part 15 rotate via the balls 19 acting as drivers.
  • the beam path of the forked light barrier 13 is periodically interrupted by the tooth profile 22 (FIG between the hole cutouts 24 lying rim webs 25 (Fig. 3b) of the hole profile 23 interrupted.
  • the speed is ⁇ of the motor 7 is obtained from the detected on the fork sensor 13 per unit time light and dark changes divided by the number of these light and dark change of causing ring gear teeth 26 and hole cutouts 24 on the rim circumference of the Aktuatorkranzes fourteenth
  • the movable actuator part 15 will retain the current or instantaneous direction of movement and the spacing gaps 21, 22 will continue pass through maximum speed.
  • the beam path of the forked light barrier 13 in the tooth profile 22 according to FIG. 3 a enters the regions a and b shown.
  • Steady timing or detection thus provides that point in time at which the movable actuator part 15 was last located on one of the two stops 27a or 27b.
  • the movable actuator part 15 will provide a continuously changing pause / duty cycle at the fork light barrier 13, as long as it has not arrived at the opposite stop 27b and 27a.
  • the detected pause / duty ratio is again constant.
  • a second timekeeping or detection takes place.
  • the drum speed ⁇ the deflection of the overall system or internal unit 2 can be determined or calculated therefrom.
  • the movable actuator 15 have a groove in the radial direction in which the centrifugal brake engages and thus holds the movable actuator 15 in a defined center position.
  • the movable actuator part 15 is not fixed to the rotationally rigid actuator part 16 connected. Rather, the movable actuator 15 can be used together with the Fork barrier and thus with the stationary sensor part 13 slidably on a rigid engine part. This may, in particular for a Compensation of manufacturing tolerances, advantages in the installation result.
  • actuator or transducer 12 in addition to in the axial direction (x-direction) extending actuator ring 14 for detecting the pitch on the movable actuator 15 in a radial direction (y and / or z-direction) extending further actuator collar or collar 28 may be provided.
  • This serves to detect the so-called yawing, i. a rotary motion of the entire system or indoor unit 2 by an imaginary vertical through its center and thus a movement in the z-direction shown in Fig. 6.
  • the expediently likewise tooth-shaped or hole-like actuator collar 28 is assigned a further forked light barrier 29 as a sensor part.
  • the second fork light barrier 29 is located on a movable part, which is displaceable in the radial direction.
  • the pause / duty cycle of an electrical signal S I measured at this forked light barrier 29 changes analogously to the yawing motion. It should be noted here that in a combined measurement of pitching and yawing movement, the opening width of the second forked light barrier 29 must also accommodate the movement of the actuator collar 14, which displaces in the axial direction.
  • the sensor part or the Fork sensor 13 not stationary, but movable in the radial direction y stored.
  • the sensor part 13 is attached to a holding device 30 which in turn, for example, is held on the motor housing.
  • the holding device 30 is composed of the light barrier or the sensor part 13, a Support arm or a bracket 31 and a counterweight 32, wherein the Holding device is mounted in a bearing point 33.
  • the storage results from two different case variants.
  • the light barrier 13 is rigid in the x direction. Emotional If the actuator part 15 is in the x-direction, then the pause duty cycle changes and thus the bright and dark time at the light barrier 13.
  • the frequency of the light and Dark change such that upon rotation of the movable actuator 15 in a clockwise direction and a movement of the holding device 30 from the Drawing plane out - so in the same direction of rotation according to the movable actuator part 15 - the measured frequency lower and at opposite direction of rotation the measured frequency is higher.
  • the Holding device 30 thus oscillates about an (imaginary) extension of the center of the Motor axis.
  • the actuator part 15 is fixed to the torsionally rigid Actuator 16 connected.
  • the holder 30 and the Photocell 13 together with the counterweight 32 both movements in x and in the y-direction.
  • the functional principle remains while the holder 30 now only with two degrees of freedom has to move.
  • the storage or the storage point 33 should therefore be quasi as Be executed ball bearings.
  • the pendulum or counterweight 32 becomes formed by the photocell 13 itself. Also in this embodiment limit two stops 34 the deflection of the radial movement.
  • the Stops 34 shown here can by a swinging photocell 13th and / or a pendulum holding device 30 can not be overcome. Out The duration of the frequency change can turn the acceleration and thus the deflection of the tub 5 - here in the radial direction y - determined become.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP05012067A 2004-06-18 2005-06-04 Dispositif pour la détection d'un mouvement oscillatoire d'un tambour d'une machine à laver Withdrawn EP1607729A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004029625 2004-06-18
DE102004029625 2004-06-18
DE102004053216 2004-11-04
DE102004053216A DE102004053216B3 (de) 2004-06-18 2004-11-04 Vorrichtung zur Erfassung einer Schwingbewegung einer Wäschetrommel

Publications (1)

Publication Number Publication Date
EP1607729A1 true EP1607729A1 (fr) 2005-12-21

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EP05012067A Withdrawn EP1607729A1 (fr) 2004-06-18 2005-06-04 Dispositif pour la détection d'un mouvement oscillatoire d'un tambour d'une machine à laver

Country Status (3)

Country Link
US (1) US20060010936A1 (fr)
EP (1) EP1607729A1 (fr)
DE (1) DE102004053216B3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007118512A1 (fr) * 2006-04-13 2007-10-25 BSH Bosch und Siemens Hausgeräte GmbH MACHINE à laver et/ou séche-linge
EP1857583A1 (fr) * 2006-05-19 2007-11-21 Whirlpool Corporation Détection de charge dynamique pour lave-linge
DE102006032337A1 (de) * 2006-07-12 2008-01-17 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Steuerung eines Schleuderablaufes einer Waschmaschine und zur Durchführung des Verfahrens geeignete Waschmaschine
EP2103726A1 (fr) * 2008-03-13 2009-09-23 Panasonic Corporation Machine à laver à tambour
EP2458063A3 (fr) * 2010-11-24 2013-06-12 Samsung Electronics Co., Ltd. Machine à laver et son procédé de détection de mousse
CN106757988A (zh) * 2013-12-06 2017-05-31 张太平 防过度振动滚筒洗衣机
EP3348697A1 (fr) * 2017-01-12 2018-07-18 Electrolux Appliances Aktiebolag Appareil avec un ou plusieurs senseurs

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005037144B4 (de) * 2005-02-18 2007-04-19 Diehl Ako Stiftung & Co. Kg Schwingfähig aufgehängtes Innenaggregat einer Wäschebehandlungsmaschine mit einem Schwingungssensor
DE102006017530A1 (de) * 2006-04-13 2007-10-18 BSH Bosch und Siemens Hausgeräte GmbH Maschine zum Waschen und/oder Trocknen von Wäsche sowie Verfahren zum Erfassen von Unwuchtparametern
KR101272341B1 (ko) * 2006-09-19 2013-06-05 엘지전자 주식회사 세탁기의 진동 감지 장치 및 방법
DE102008003340A1 (de) * 2008-01-07 2009-07-09 Robert Bosch Gmbh Sensorvorrichtung
US8695381B2 (en) * 2008-03-28 2014-04-15 Electrolux Home Products, Inc. Laundering device vibration control
US8448477B2 (en) * 2009-11-17 2013-05-28 Whirlpool Corporation Laundry treating appliance with controlled reciprocating movement
DE102010002048A1 (de) * 2010-02-17 2011-08-18 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Verfahren zur Einstellung einer Schleuderdrehzahl einer Trommel eines Hausgeräts zur Pflege von Wäschestücken
DE102010027158B4 (de) 2010-07-14 2012-06-06 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsgerät
DE102011007515A1 (de) * 2011-04-15 2012-10-18 BSH Bosch und Siemens Hausgeräte GmbH Einrichtung zur Überwachung einer im Betrieb schwingenden Vorrichtung eines Haushaltgeräts, Haushaltgerät zur Pflege von Wäschestücken sowie Verfahren zum Betreiben eines Haushaltgeräts

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DE2915815A1 (de) * 1979-04-19 1980-11-06 Bauknecht Gmbh G Vorrichtung zum erfassen der drehzahl und der unwucht eines in einem gehaeuse schwingend gelagerten aggregates
JPH1015277A (ja) * 1996-07-02 1998-01-20 Hitachi Ltd 全自動洗濯機
JPH1057681A (ja) * 1996-08-26 1998-03-03 Nippon Kentetsu Co Ltd 洗濯機の回転角度検出装置
EP1167609A1 (fr) * 2000-06-30 2002-01-02 Whirlpool Corporation Procédé pour détecter et contrôler le balourd dynamique d'un tambour de machine à laver et machine à laver utilisant un tel procédé
EP1519178A1 (fr) * 2003-09-29 2005-03-30 Diehl AKO Stiftung & Co. KG Méthode et dispostif pour détecter les mouvements de balourd d'un tambour de machine à laver.

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DE3900513A1 (de) * 1988-07-05 1990-07-12 Gkn Keller Gmbh Verfahren und vorrichtung zur sanierung kontaminierter standorte
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DE10345591B3 (de) * 2003-09-29 2005-07-14 Diehl Ako Stiftung & Co. Kg Verfahren und Einrichtung zum Erfassen von unwuchtabhängigen Bewegungserscheinungen bei einer Wäschetrommel

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DE2915815A1 (de) * 1979-04-19 1980-11-06 Bauknecht Gmbh G Vorrichtung zum erfassen der drehzahl und der unwucht eines in einem gehaeuse schwingend gelagerten aggregates
JPH1015277A (ja) * 1996-07-02 1998-01-20 Hitachi Ltd 全自動洗濯機
JPH1057681A (ja) * 1996-08-26 1998-03-03 Nippon Kentetsu Co Ltd 洗濯機の回転角度検出装置
EP1167609A1 (fr) * 2000-06-30 2002-01-02 Whirlpool Corporation Procédé pour détecter et contrôler le balourd dynamique d'un tambour de machine à laver et machine à laver utilisant un tel procédé
EP1519178A1 (fr) * 2003-09-29 2005-03-30 Diehl AKO Stiftung & Co. KG Méthode et dispostif pour détecter les mouvements de balourd d'un tambour de machine à laver.

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007118512A1 (fr) * 2006-04-13 2007-10-25 BSH Bosch und Siemens Hausgeräte GmbH MACHINE à laver et/ou séche-linge
EP1857583A1 (fr) * 2006-05-19 2007-11-21 Whirlpool Corporation Détection de charge dynamique pour lave-linge
US7581272B2 (en) 2006-05-19 2009-09-01 Whirlpool Corporation Dynamic load detection for a clothes washer
DE102006032337A1 (de) * 2006-07-12 2008-01-17 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Steuerung eines Schleuderablaufes einer Waschmaschine und zur Durchführung des Verfahrens geeignete Waschmaschine
US8627525B2 (en) 2006-07-12 2014-01-14 Bsh Bosch Und Siemens Hausgeraete Gmbh Method for the control of a spinning cycle of a washing machine and a washing machine suitable for performing said method
EP2103726A1 (fr) * 2008-03-13 2009-09-23 Panasonic Corporation Machine à laver à tambour
EP2458063A3 (fr) * 2010-11-24 2013-06-12 Samsung Electronics Co., Ltd. Machine à laver et son procédé de détection de mousse
CN106757988A (zh) * 2013-12-06 2017-05-31 张太平 防过度振动滚筒洗衣机
CN106757988B (zh) * 2013-12-06 2019-05-31 福州思琪科技有限公司 防过度振动滚筒洗衣机
EP3348697A1 (fr) * 2017-01-12 2018-07-18 Electrolux Appliances Aktiebolag Appareil avec un ou plusieurs senseurs
WO2018130396A1 (fr) * 2017-01-12 2018-07-19 Electrolux Appliances Aktiebolag Appareil comprenant un ou plusieurs capteurs

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Publication number Publication date
DE102004053216B3 (de) 2006-02-09
US20060010936A1 (en) 2006-01-19

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