EP2251476A1 - Lave-linge doté d'une cuve et d'un dispositif de saisie - Google Patents

Lave-linge doté d'une cuve et d'un dispositif de saisie Download PDF

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Publication number
EP2251476A1
EP2251476A1 EP09006569A EP09006569A EP2251476A1 EP 2251476 A1 EP2251476 A1 EP 2251476A1 EP 09006569 A EP09006569 A EP 09006569A EP 09006569 A EP09006569 A EP 09006569A EP 2251476 A1 EP2251476 A1 EP 2251476A1
Authority
EP
European Patent Office
Prior art keywords
magnet
tub
spring
washing machine
sensor
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.)
Granted
Application number
EP09006569A
Other languages
German (de)
English (en)
Other versions
EP2251476B1 (fr
Inventor
Michael Finke
Helge Müller
Rainer Bicker
Matthias Hollenhorst
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.)
Miele und Cie KG
Original Assignee
Miele und Cie 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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to EP09006569.9A priority Critical patent/EP2251476B1/fr
Priority to ES09006569T priority patent/ES2411911T3/es
Publication of EP2251476A1 publication Critical patent/EP2251476A1/fr
Application granted granted Critical
Publication of EP2251476B1 publication Critical patent/EP2251476B1/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
    • D06F34/14—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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F34/18—Condition of the laundry, e.g. nature or weight

Definitions

  • the invention relates to a washing machine with a housing, with a swing-mounted in the housing tub with a rotatably mounted therein drum with an at least approximately horizontal axis of rotation, which is driven by a motor and a detection device for detecting the position and / or the position of the tub in the housing, which comprises a magnetic field sensor fixed to the housing with a corresponding magnet which is adapted to detect the flux density and the direction of the magnetic field emanating from the magnet.
  • Known drum washing machines have a tub suspended in the housing suspended in the tub, in which a horizontally rotatable drum is mounted.
  • the tub is due to the laundry or the imbalance in vibration, the best intercepted due to the resilient suspension and additional damping or not transferred to the housing or the floor.
  • the swing of the tub must be monitored so that at the risk of excessive vibration, the washing motion or the spin cycle can be stopped so that no damage caused by a collision of the tub with the housing or other component.
  • the laundry weight or an imbalance can be determined on the basis of the vibration behavior, so that compensatory measures, such as a redistribution of the laundry, can be made.
  • a washing machine which has a detection device for detecting the position and / or the position of the tub in the housing.
  • the detection device comprises a magnet attached to the movable tub, which is in operative connection with a sensor fixed relative to the housing.
  • the sensor is set up to determine the direction of the magnetic field in addition to the flux density of the magnetic field.
  • the sensor is not coupled to the magnet, so that it can happen that, in the event of an unfavorable movement of the tub, the magnet leaves the effective range of the sensor. This would lead to erroneous sensations, so that unnecessary measures for unbalance limitation would be initiated. In the worst case, strong movements could not be detected early as such, which would lead to unwanted strong vibrations.
  • the sensor is quite elaborate, since the effective range of the sensor itself must cover the entire deflection of the tub.
  • a washing machine with a vertically rotating drum in which a detection device for detecting vibrations or deflections of the tub is arranged in a holder which has a magnetic field sensor and a magnet inside.
  • the magnet is coupled with a holder with the tub, wherein the sensor is firmly positioned on the housing-side end of the holder.
  • the arrangement of the magnet relative to the sensor is designed such that only the intensity of the magnetic field can be detected, in which case only changes in distance between magnet and sensor can be detected. Lateral pendulum or horizontal displacement or rotational wobble can not be detected which is common in a drum type washing machine.
  • the invention is therefore based on the object to provide a drum washing machine, in which the detection of deflections or tilting of the tub is simple and reliable.
  • the achievable with the invention advantages are that a very accurate detection of the position and position of the tub is provided so that purposefully adapted measures to limit the deflections of the tub can be initiated.
  • the magnetic field sensor is substantially fixedly associated with the housing, wherein the cooperating with the magnetic field sensor magnet is mounted in a holding means which is coupled by means of at least one spring to the tub and thereby is in operative connection with him.
  • the holding means is adapted to allow movement of the magnet relative to the sensor, wherein the spring is adapted to transmit a movement and / or position change of the tub to the magnet.
  • the holding means is adapted to allow even changes in distance between the magnet and sensor or tilting or rotating movements of the magnet relative to the sensor.
  • the rotational movements and the translational movements can be detected in almost all spatial directions that are relevant for a tub in a washing machine.
  • the acquired readings may then be subjected to a mathematical transformation to infer the actual tub movement. This conversion is expediently carried out in a microcomputer of the control device.
  • the holding means is arranged in cooperation with the spring to transmit the movement of the tub stocky to the magnet.
  • the reduction makes it possible to limit larger deflections of the tub, which are in the range of 1 to 5 cm from the rest position to a deflection range of the magnet in the range of 1 to 10 mm, so that the effective range of the corresponding sensor can be kept correspondingly small.
  • the senor is arranged on a ball of a housing-mounted ball joint, and the holding means comprises a pan, which surrounds the ball at least partially, wherein the magnet is arranged in the holding means spaced from the sensor.
  • the magnet is mounted on a carrier movable in the holding part, which by means of another spring within the carrier, the coupling to the spring, which is connected to the tub, provides.
  • the ratio of the spring force or spring constant of the other spring relative to the outer spring, which is coupled to the tub the reduction in the distance range between the magnet and the sensor is determined.
  • the lye container-side end of the spring is coupled to the front, upper region of the lye container in the operating position of the washing machine.
  • This Ankoppelstelle is particularly suitable for a tub of a drum washing machine, since almost all movements, at least two rotational movements and a translational movement of the tub, as described above, perform precisely in this area, a detectable movement.
  • the holding means is designed as a piston-shaped guide body, which is arranged in the interior of the tension spring designed as a retaining spring, wherein the guide body is coupled in an area with the spring, which is closer to the housing end than to the tub side end of the tension spring in an expedient development ,
  • the guide body is thus inside the helically coiled retaining spring.
  • the retaining spring has a curved end on the housing side, which rests on a curved support, for providing movements in different rotational and pendulum directions on the support, wherein the sensor is mounted facing in the direction of the spring or the magnet in the region of the support.
  • the guide body is formed at least partially friction with the spring for damping natural oscillations of the spring.
  • the measurement accuracy is further improved because incorrect measurements due to short-term changes in distance due to natural oscillations of the spring are avoided or at least reduced.
  • the detection device has at least one further magnetic field sensor with a further magnet operatively connected to this sensor, wherein the further magnet is coupled to the attachment of the first magnet to the tub.
  • the Fig. 1 shows in a sketched view of a washing machine 1, which comprises a housing 2 with a tub 4 mounted therein swingably movable.
  • the tub 4 is suspended by means of indicated spring elements 11 swingably in the housing 2 and damped by means of damper 12 with respect to its movement.
  • a rotatable drum 3 is arranged with an at least approximately horizontal axis of rotation 6.
  • the drum 3 is drivable with a motor 5, so that the rotational movement is provided during washing or spinning.
  • the washing machine 1 further comprises a detection device 7 for detecting the position and / or position and / or the movement of the tub 4 relative to the housing 2.
  • a holding means 14 is adapted to the magnet 9 (FIG. Fig.
  • the washing machine 1 has a frontal loading opening, the detection device 7, however, in the same way for a coat-loadable washing machine, such as a top loader, used.
  • Fig. 2 shows the detection device 7 in a sketched, detailed view.
  • the detection device 7 comprises a magnetic field sensor 8 which is fixedly fixed relative to the housing 2.
  • a magnet 9 is arranged in the effective range of the sensor 8, which can be moved by means of the spring 13, the movement being caused by the oscillation or change in position of the tub 4.
  • the arrow indications x, y, z indicate that translational movements of the tub lead in at least almost all three spatial directions to corresponding evaluable movements of the magnet 9 relative to the magnetic field sensor 8, in which case the translational movement in the vertical direction ytrans can be detected.
  • Rotational movements xrot or zrot of the tub 4 are also transmitted to the magnet 9 in a staggered manner, so that the actual position and movement of the tub 4 can be determined by means of a mathematical transformation of the detected sensor signal.
  • the microcomputer of the control device 22 ( Fig. 1 ), to which the signals of the sensor 8 are supplied.
  • the transformation of the sensor signals into data which can be utilized by the controller 22 can alternatively also be effected by means of a separate electronic circuit or a separate microprocessor circuit, which is preferably formed with the sensor 8 as a unit.
  • Fig. 3 shows the execution of the washing machine 1 with a different coupling of the magnet with the tub 4.
  • the tub 4 is suspended by means of retaining springs 11 within the housing 2 swinging.
  • damper 12 are attached to the tub, which are supported against the underside of the housing 2.
  • the detection device 7 comprises a piston-shaped guide means 19 which surrounds the magnet 9 (FIG. Fig. 4 ) wearing.
  • the guide means 19 with the magnet is arranged inside the holding spring 11 designed as a helical spring.
  • the detection device 7 in a further embodiment in a further retaining spring 11a, a second guide means 19a, which carries a further magnet 9a.
  • Each magnet 9, 9a is assigned a separate sensor 8, 8a in each case.
  • the signals generated by each sensor 8, 8a are correspondingly evaluated in order to respectively calculate and determine the actual momentary position and movement of the tub 4 therefrom.
  • Fig. 4 shows the detection device 7 for this embodiment.
  • the housing-side end 20 of the retaining spring 11 is curved or arc-shaped, which rests on a curved support 21. This allows the spring of a pivoting movement of the tub ( Fig. 3 ) follow, without the helical spring itself is bent.
  • the piston-shaped guide body 19 is arranged, which carries the magnet 9 on its end facing the housing-side support 21.
  • the magnetic field sensor 8, which in this example is located on a printed circuit board 23, which in this example also carries an electronic circuit or a microprocessor circuit for converting or transforming the measuring signals, is fixed to the support 21 facing the spring or magnet 9.
  • the guide body 19 is frictionally inserted in the retaining spring 11, so that natural oscillations of the spring 11 are attenuated or prevented in the region of the magnet 9, whereby unwanted false measurements are avoided.
  • the guide body 19 is attached to the mounting location 25 on the spring 11, wherein the mounting location 25 is closer to the housing-side end 20, as to the tub side end 24. For the reduction of the movement is not the spatial arrangement alone decisive, but the ratio of the smaller spring travel between mounting location 25 and housing-side end 20 for larger travel of the mounting location 25 to the tub side end 24th

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP09006569.9A 2009-05-15 2009-05-15 Lave-linge doté d'une cuve et d'un dispositif de saisie Not-in-force EP2251476B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09006569.9A EP2251476B1 (fr) 2009-05-15 2009-05-15 Lave-linge doté d'une cuve et d'un dispositif de saisie
ES09006569T ES2411911T3 (es) 2009-05-15 2009-05-15 Máquina lavadora con una cubeta para la colada y un equipo de detección

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09006569.9A EP2251476B1 (fr) 2009-05-15 2009-05-15 Lave-linge doté d'une cuve et d'un dispositif de saisie

Publications (2)

Publication Number Publication Date
EP2251476A1 true EP2251476A1 (fr) 2010-11-17
EP2251476B1 EP2251476B1 (fr) 2013-05-15

Family

ID=41139307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09006569.9A Not-in-force EP2251476B1 (fr) 2009-05-15 2009-05-15 Lave-linge doté d'une cuve et d'un dispositif de saisie

Country Status (2)

Country Link
EP (1) EP2251476B1 (fr)
ES (1) ES2411911T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016142168A1 (fr) * 2015-03-11 2016-09-15 BSH Hausgeräte GmbH Appareil ménager de traitement du linge
EP2594677A3 (fr) * 2011-11-17 2018-01-24 LG Electronics, Inc. Machine à laver avec capteur de poids
EP3330426A4 (fr) * 2015-07-31 2018-08-01 Qingdao Haier Washing Machine Co., Ltd. Composant d'amortissement des vibrations d'une machine à laver
CN109602375A (zh) * 2018-11-15 2019-04-12 浙江欧琳生活健康科技有限公司 一种洗碗机及其调整程序的控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11422210B2 (en) 2019-10-10 2022-08-23 Honeywell International Inc. Apparatuses, systems, and methods for weight detection

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175416A (en) * 1985-05-16 1986-11-26 Toshiba Kk Washer-dehydrator
DE3838998A1 (de) * 1988-11-18 1990-05-23 Licentia Gmbh Beladungsmengenanzeige, insbesondere bei haushaltwaschmaschinen
DE4319614C1 (de) * 1993-06-14 1994-08-18 Bauknecht Hausgeraete Trommelwaschmaschine
EP0972874A1 (fr) * 1998-07-16 2000-01-19 Samsung Electronics Co., Ltd. Machine à laver
DE10022609A1 (de) 2000-05-09 2001-11-29 Whirlpool Co Vorrichtung zur Begrenzung der Unwuchtwirkung einer Wascheinheit einer Waschmaschine
DE202007002626U1 (de) 2007-02-22 2007-04-19 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175416A (en) * 1985-05-16 1986-11-26 Toshiba Kk Washer-dehydrator
DE3838998A1 (de) * 1988-11-18 1990-05-23 Licentia Gmbh Beladungsmengenanzeige, insbesondere bei haushaltwaschmaschinen
DE4319614C1 (de) * 1993-06-14 1994-08-18 Bauknecht Hausgeraete Trommelwaschmaschine
EP0972874A1 (fr) * 1998-07-16 2000-01-19 Samsung Electronics Co., Ltd. Machine à laver
EP0972874B1 (fr) 1998-07-16 2002-08-07 Samsung Electronics Co., Ltd. Machine à laver
DE10022609A1 (de) 2000-05-09 2001-11-29 Whirlpool Co Vorrichtung zur Begrenzung der Unwuchtwirkung einer Wascheinheit einer Waschmaschine
DE202007002626U1 (de) 2007-02-22 2007-04-19 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2594677A3 (fr) * 2011-11-17 2018-01-24 LG Electronics, Inc. Machine à laver avec capteur de poids
EP3913128A1 (fr) * 2011-11-17 2021-11-24 LG Electronics Inc. Machine à laver avec unité de détection de poids
WO2016142168A1 (fr) * 2015-03-11 2016-09-15 BSH Hausgeräte GmbH Appareil ménager de traitement du linge
EP3330426A4 (fr) * 2015-07-31 2018-08-01 Qingdao Haier Washing Machine Co., Ltd. Composant d'amortissement des vibrations d'une machine à laver
CN109602375A (zh) * 2018-11-15 2019-04-12 浙江欧琳生活健康科技有限公司 一种洗碗机及其调整程序的控制方法

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Publication number Publication date
ES2411911T3 (es) 2013-07-09
EP2251476B1 (fr) 2013-05-15

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