EP2251478B1 - Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung - Google Patents

Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung Download PDF

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Publication number
EP2251478B1
EP2251478B1 EP09006568A EP09006568A EP2251478B1 EP 2251478 B1 EP2251478 B1 EP 2251478B1 EP 09006568 A EP09006568 A EP 09006568A EP 09006568 A EP09006568 A EP 09006568A EP 2251478 B1 EP2251478 B1 EP 2251478B1
Authority
EP
European Patent Office
Prior art keywords
lever
washing machine
joint
magnet
suds container
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
EP09006568A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2251478A1 (de
Inventor
Rainer Bicker
Benedikt Fechtel
Michael Finke
Matthias Hollenhorst
Helge Müller
Klaus Rocklage
Ralf Templin
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 ES09006568T priority Critical patent/ES2393432T3/es
Priority to EP09006568A priority patent/EP2251478B1/de
Priority to PL09006568T priority patent/PL2251478T3/pl
Publication of EP2251478A1 publication Critical patent/EP2251478A1/de
Application granted granted Critical
Publication of EP2251478B1 publication Critical patent/EP2251478B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/16Imbalance
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26Unbalance; Noise level
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14Arrangements for detecting or measuring specific parameters
    • D06F34/18Condition 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 imbalance in vibration, which intercepted as well as possible 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 EP 1 264 925 A2 discloses a washing machine in which a sensor is arranged in the connection region of the shock absorber.
  • the magnet is mounted on a cantilevered driver, which is attached to a housing bottom Magnetic field sensor cooperates. Due to the arrangement of the magnet on the damper support only vertical deflections can be reliably detected.
  • the invention is therefore an object of the invention to provide a laundry treatment machine, in which the detection of deflections 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 fixedly or essentially fixedly assigned to the housing, the magnet associated with the magnetic field sensor being mounted in a joint associated with the sensor, which is in operative connection with the tub by means of a lever mechanism.
  • the lever mechanism is adapted to transmit a movement or position change of the tub to the magnet.
  • the lever mechanism comprises a first lever, which is coupled to the tub with a first joint, and a second lever, which is coupled at a first end to the first lever by means of a second articulation and with its second end, the sensor-side third Joint forms with the magnet attached to the third joint. Due to the multi-joint structure of the lever mechanism a flat-building unit is provided with high precision.
  • the third joint is a ball joint, which comprises a lever mounted on the ball, which is held in a corresponding, fixed relative to the housing pan, wherein the magnet is attached to the ball so that it is in the effective range of Sensor is located.
  • the second joint it is advantageous to form this for coupling the second end of the first lever with the first end of the second lever as a ball joint or as a universal joint. This allows a good adaptation of the deflections of the tub to the movement of the ball can be achieved with the sensor.
  • the first joint for coupling the first end of the first lever to the tub is a rotary joint whose axis of rotation is substantially perpendicular to the tub wall in the coupling region. This ensures that linear movements of the tub are optimally transmitted to the ball with the magnet mounted there.
  • the washing machine has a guide element for limiting the distance of the first lever and / or the second lever to the tub wall. This ensures that even with strong vibrations, the levers do not leave the given range of motion.
  • the coupling to the tub is formed with a guide element in which the first lever is guided displaceably.
  • a cam for engagement in a corresponding groove in the pan, which is adapted to act as a rotation for limiting the Verschwenkweges and / or the pivoting of the lever.
  • FIG. 1 shows in a sketched view of a washing machine 1 in operating position, which includes a housing 2 with a swingably mounted therein tub 4.
  • the tub 4 is suspended by means of indicated spring elements 15 swingably in the housing 2 and damped by means of damper 16 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.
  • 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 lever mechanism 11, wherein the movement is caused by the oscillation or change in position of the tub 4.
  • the lever mechanism 11 consists of a first lever 12 which is coupled to the first joint 10 on the tub 4.
  • the first joint 10 is in this case designed as a rotary joint whose axis of rotation 17 is perpendicular to the tub wall, in this case the end wall 21.
  • a second lever 13 is coupled by means of the second joint 14, which is designed here as a ball joint, whose end is connected to the third joint 15, which carries the magnet.
  • the third joint 15 is formed here as a ball joint, wherein the lever end forms the ball 15a, on which the magnet 9 is fixed.
  • the ball socket 15b is fixed to the housing fixed to a carrier 23.
  • the magnetic field sensor 8 Arranged on the carrier 23 is the magnetic field sensor 8, which is set up to detect the strength of the magnetic field and the direction of the field lines of the magnetic field emanating from the
  • Fig. 2 shows an embodiment of the washing machine, in which the first lever 12 of the lever mechanism 11 is coupled to a guide member 18 on the tub.
  • the second lever 13 can be coupled longitudinally to the first lever 12 with the second hinge 10, wherein the length compensation is provided due to different positions of the tub relative to the housing by the displacement in the longitudinal direction of the first lever in the guide element.
  • the first lever is coupled in this embodiment to the shell-side container wall 22.
  • Fig. 3 shows in plan view an embodiment of the lever mechanism similar to Fig. 1 ,
  • the first lever is coupled by means of the first rotary joint 10 on the shell-side container wall 22.
  • the first lever 12 is positioned at an angle, in this case approximately at a right angle R, to the second lever 13, so that the length compensation due to changes in position of the tub 4 is provided by means of an angular change.
  • the carrier 23 is provided in addition to the sensor 8 with an electronic circuit arrangement which carries out a processing of the sensor signal for the control (not shown) of the washing machine 1.
  • Fig. 4 shows in detail a sectional view of a ball joint 15 in which the ball 15a is provided with a cam 19 which engages in a corresponding groove 20 in the socket 15b.
  • the groove 20 acts as a cam for the cam 19 and serves as anti-rotation.
  • Fig. 5 shows in detail the rotary joint 10, wherein the axis of rotation 17 is formed by means of a film hinge 17a.
EP09006568A 2009-05-15 2009-05-15 Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung Not-in-force EP2251478B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES09006568T ES2393432T3 (es) 2009-05-15 2009-05-15 Máquina lavadora con un recipiente de lavado y un equipo de detección
EP09006568A EP2251478B1 (de) 2009-05-15 2009-05-15 Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung
PL09006568T PL2251478T3 (pl) 2009-05-15 2009-05-15 Pralka z pojemnikiem na roztwór piorący i urządzeniem rejestrującym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09006568A EP2251478B1 (de) 2009-05-15 2009-05-15 Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung

Publications (2)

Publication Number Publication Date
EP2251478A1 EP2251478A1 (de) 2010-11-17
EP2251478B1 true EP2251478B1 (de) 2012-10-10

Family

ID=41110899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09006568A Not-in-force EP2251478B1 (de) 2009-05-15 2009-05-15 Waschmaschine mit einem Laugenbehälter und einer Erfassungseinrichtung

Country Status (3)

Country Link
EP (1) EP2251478B1 (es)
ES (1) ES2393432T3 (es)
PL (1) PL2251478T3 (es)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179093A (ja) * 1984-02-27 1985-09-12 松下電器産業株式会社 脱水洗濯機の安全スイツチ
DE4319614C1 (de) * 1993-06-14 1994-08-18 Bauknecht Hausgeraete Trommelwaschmaschine
JPH0871290A (ja) * 1994-09-02 1996-03-19 Matsushita Electric Ind Co Ltd 全自動洗濯機の振動センサー及びその信号処理手段
TW415981B (en) * 1998-07-16 2000-12-21 Samsung Electronics Co Ltd Washing machine having a hybrid sensor and a control method thereof
DE10022609C2 (de) 2000-05-09 2003-11-13 Whirlpool Co Verfahren zur Begrenzung der Unwuchtwirkung einer Wascheinheit einer Waschmaschine und Vorrichtung zur Durchführung des Verfahrens
ITPN20010041A1 (it) * 2001-06-08 2002-12-08 Electrolux Zanussi Elettrodome Macchina lavatrice con sensore di peso
JP2006068273A (ja) * 2004-09-02 2006-03-16 Matsushita Electric Ind Co Ltd ドラム式洗濯機
DE202007002626U1 (de) 2007-02-22 2007-04-19 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät

Also Published As

Publication number Publication date
EP2251478A1 (de) 2010-11-17
ES2393432T3 (es) 2012-12-21
PL2251478T3 (pl) 2013-01-31

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