EP3085825A1 - Procede de fonctionnement d'un lave-linge et lave-linge - Google Patents

Procede de fonctionnement d'un lave-linge et lave-linge Download PDF

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Publication number
EP3085825A1
EP3085825A1 EP16020118.2A EP16020118A EP3085825A1 EP 3085825 A1 EP3085825 A1 EP 3085825A1 EP 16020118 A EP16020118 A EP 16020118A EP 3085825 A1 EP3085825 A1 EP 3085825A1
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EP
European Patent Office
Prior art keywords
measured
motor
temperature
cycle
tmax
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
EP16020118.2A
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German (de)
English (en)
Other versions
EP3085825B1 (fr
Inventor
Dirk Sieding
Marcel Zielke
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
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Miele und Cie KG
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Publication of EP3085825A1 publication Critical patent/EP3085825A1/fr
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    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • 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
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the invention relates to a method for operating a washing machine with a drum for receiving laundry and a motor for driving the drum and a correspondingly designed washing machine. If the motor drives the drum during a washing process, it may heat up. This can lead to excessive load on the motor. In addition, heat dissipation in encapsulated engines can be problematic.
  • the invention thus presents the problem of providing a method for operating a washing machine and a washing machine in which an engine heating can be counteracted.
  • the achievable with the present invention consist in addition to the prevention of undesirable heating of the engine is that the washing and rinsing effect of a washing process is not affected. An undesirable increase in the temperature of the engine can be governed quickly, without the washing performance suffers.
  • the invention relates to a method of operating a washing machine having a drum for receiving laundry and a motor for driving the drum, comprising the steps of measuring an initial motor temperature of the motor at the beginning of a first cycle of rotation of the drum, a first maximum motor temperature during the first Rotary cycle, an end motor temperature at the end of the first rotation cycle and a second maximum motor temperature during a second rotation cycle, determining a difference between the measured end motor temperature and the measured initial motor temperature and a difference between the measured second maximum motor temperature and the measured first maximum engine temperature and control of a speed of the engine, a pause time during which the engine is deactivated, and / or a wash rhythm form for a third spin cycle depending on the determined difference between the measured end engine temperature and the measured initial engine speed temperature and the determined difference between the measured second maximum engine temperature and the measured first maximum engine temperature.
  • the current engine temperature can be computationally recorded in this way and advantageously influenced by changing influencing parameters such as the rotation or washing rhythm.
  • measures can be taken to counteract a further increase in engine temperature.
  • a forecast of the further engine temperature-time history can be calculated, and for the third turning cycle, if necessary, the engine speed, the break time during which the engine is deactivated, and / or the wash rhythm shape can be varied and / or changed in comparison to the second rotation cycle in order to favorably influence the further time course of the engine temperature.
  • the temperature detection can be sensor-controlled or model-based.
  • a rotation cycle is defined within the meaning of the invention as a complete rotational rhythm incl. Rotational pause and rotational rotation. This method is particularly advantageous when the motor is an encapsulated motor such as a BLPM (Brushless Permanent Magnet) motor.
  • Tmax n second maximum engine temperature
  • Tmax n-1 first maximum engine temperature.
  • the speed of the motor and / or the pause time during which the motor is deactivated regulated for a third rotation cycle. For example, the speed is decreased and / or the pause time extended if the difference between the second maximum engine temperature and the first maximum engine temperature is greater than a predetermined first threshold.
  • the washing rhythm form is preferably regulated for a third rotation cycle.
  • the wash rhythm form is changed for the third rotation cycle in comparison to the second rotation cycle.
  • first, second and third rotation cycles are to be understood as relative, i. the first rotation cycle is performed before the second and the second before the third rotation cycle.
  • first, second and third rotation cycles are performed sequentially (i.e., without another rotation cycle between them). Then, the initial motor temperature of the second rotation cycle corresponds to the end motor temperature of the first rotation cycle and the initial motor temperature of the third rotation cycle corresponds to the end motor temperature of the second rotation cycle.
  • the engine temperatures measured in the first and second rotation cycles are preferably evaluated at the end of the second rotation cycle.
  • the actual engine temperature in this case is the end engine temperature of the second spin cycle. Based on the determined difference between the second maximum motor temperature and the first maximum motor temperature and the determined difference between the end motor temperature and the initial motor temperature of the first rotation cycle, the speed of the motor, the pause time during which the motor is deactivated, and or the wash rhythm shape for the third cycle of rotation subsequent to the second rotation cycle.
  • the third turning cycle Preferably, as compared to the second spin cycle, the speed of the engine is reduced, the pause time is extended, and / or the wash rhythm shape is changed. If they do not predict an undesirable increase in engine temperature in the further course of the washing process, it is preferable to leave the engine speed, pause time and / or wash rhythm shape unchanged for the third rotation cycle as compared to the second rotation cycle.
  • controlling the rotational speed of the motor for the third rotational cycle comprises changing preferably decreasing the rotational speed of the engine in FIG Comparing to the speed of the motor during the second spin cycle when the difference between the measured second maximum engine temperature and the measured first maximum engine temperature is greater than a predetermined first threshold.
  • regulating the pause time during which the motor is deactivated preferably comprises, for the third rotation cycle, a change in the pause time extension compared to the pause time of the second spin cycle when the difference between the measured second maximum engine temperature and the measured first one Maximum engine temperature is greater than the predetermined first threshold.
  • Controlling the wash rhythm shape of the drum for the third spin cycle preferably comprises changing the wash rhythm shape when the difference between the measured end motor temperature and the measured initial motor temperature of the first spin cycle is greater than a predetermined second threshold.
  • the rectangles 1, 2 and 3 in Table 1 differ in the pulse / pause ratio and the maximum speed.
  • the rectangle 3 is a gentle rhythm.
  • the first threshold and the second threshold are the same.
  • the predetermined first threshold value and the predetermined second threshold value each depend on the actual engine temperature, which represents the current temperature of the engine.
  • the actual engine temperature is preferably the final engine temperature of the second spin cycle, i. the engine temperature at the end of the second spin cycle.
  • the predetermined first threshold and the predetermined second threshold decrease respectively with increasing actual engine temperature. That is, the two predetermined threshold values become smaller as the actual engine temperature increases, so that the higher the actual engine temperature is, the faster an unwanted engine temperature increase can be counteracted.
  • the predetermined first threshold and the predetermined second threshold are each predetermined for predetermined actual engine temperature ranges.
  • the predetermined first threshold and the predetermined second threshold may each be the same at the same actual engine temperature.
  • the first threshold value has a predetermined value w
  • the first and second threshold values each have a value x at an actual engine temperature in the range of 76 to 90 ° C
  • the first and second thresholds each have a predetermined value y
  • at an actual engine temperature greater than 90 ° C the first and second thresholds each have a predetermined value z.
  • the speed, the pause time and / or the washing rhythm form for the third rotation cycle preferably correspond to those of the second rotation cycle ie the speed, pause time and / or wash rhythm used in the second rotation cycle are not changed for the third rotation cycle but kept unchanged.
  • the difference ⁇ Tmax calculated according to the formula (1) and / or the difference ⁇ T cycle calculated according to the formula (2) are greater than the respective first and second thresholds indicated in the respective actual engine temperature ranges, the rotational speed, the pause time and / or the Wash rhythm form preferably varies according to Table 1.
  • Table 1 Variation of the speed, pause time and / or wash rhythm form depending on the actual engine temperature Actual engine temperature ⁇ 50 ° C 50-75 ° C 76-90 ° C > 90 ° C ⁇ Tmax (calculated according to formula (1)) if ⁇ Tmax> w, then speed change by factor 1.2, no change of the pause time if ⁇ Tmax> x, then pause time extension by a factor of 2, no change in the speed if ⁇ Tmax> y, then speed change by factor 1.2 and pause time extension by factor 2 if ⁇ Tmax> z, then speed change by factor 1.2 and pause time extension by factor 4 ⁇ T Cycle (calculated according to formula (2)) no change in the wash rhythm form if ⁇ T cycle > x, change of washing rhythm in rectangle 1 if ⁇ T cycle > y, change of washing rhythm in rectangle 2 if ⁇ T cycle > z, change of washing rhythm in rectangle 3
  • a duration of the first, second and third rotation cycle is preferably less than or equal to 60 sec. This laundry washer can be avoided.
  • a maximum pause time is preferably 10 seconds.
  • the speed of the motor is preferably in the range of 20 to 75 rpm.
  • the first threshold in the case of a second maximum engine temperature is less than 50 ° C 1.7 K.
  • the first threshold and the second threshold are each preferably 1.4 K.
  • the first threshold and the second threshold are preferably the first threshold and the second threshold each 1.1
  • the first threshold value and the second threshold value are preferably 0.8 K.
  • the invention relates to a washing machine with a drum for receiving laundry and a motor for driving the drum and a control device, wherein the control device is set, depending on a detected difference between a measured at the end of a first rotation cycle end motor temperature and at the beginning a first rotational cycle measured initial motor temperature and a detected difference between a measured during a second rotation cycle second maximum motor temperature and a measured during the first rotation cycle first maximum motor temperature, a speed of the motor, a pause time within the engine is deactivated, and / or to control a washing rhythm shape of the drum for a third rotation cycle according to the above method in one or more of the described embodiments.
  • the engine is preferably an encapsulated engine, i. built into a housing engine.
  • the motor is a BLPM (Brushless Permanent Magnet) motor.
  • the washing machine preferably further comprises a sensor device for sensing the engine temperature of the engine.
  • the washing machine may be a household appliance or a commercially used appliance.
  • the term "washing machine” includes a washing machine and / or a combi appliance such as a washer-dryer.
  • Fig. 1 shows a time sequence of rotation cycles of an engine of a washing machine and its engine temperature and speed curve. Shown is a time sequence of a first rotational cycle DZ 1, DZ 2 a second rotating cycle and a third cycle of rotation DZ 3, which follow one another directly.
  • the rotation cycle DZ 1 includes a complete rotational rhythm incl.
  • Rotation break and rotation reversion In the rotation cycle DZ 1 , the engine is initially brought to a predetermined speed and a rotated predetermined time, then a predetermined pause time is performed, during which the motor is deactivated, ie the speed of the motor 0 rpm.
  • an initial motor temperature T a is measured at the beginning of the first rotation cycle DZ 1 or end motor temperature T e at the end of the first rotation cycle DZ 1 . Furthermore, during the first rotational cycle DZ 1, the first maximum engine temperature Tmax n-1 and during the second rotational cycle DZ 2, the second maximum engine temperature Tmax n measured.
  • a difference between the measured end motor temperature T e and the measured initial motor temperature T a and a difference between the measured second maximum motor temperature Tmax n and the measured first maximum motor temperature Tmax n-1 are determined at the end of the second rotation cycle DZ 2 .
  • the rotational speed of the engine, the pause time during which the engine is deactivated, and / or the washing rhythm shape for the third rotational cycle DZ 3 are determined as a function of the determined difference between the measured end engine temperature T e and the measured initial engine temperature T a and determined difference between the measured second maximum motor temperature Tmax n and the measured first maximum motor temperature Tmax n-1 regulated.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP16020118.2A 2015-04-21 2016-04-07 Procede de fonctionnement d'un lave-linge et lave-linge Active EP3085825B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015106051.5A DE102015106051A1 (de) 2015-04-21 2015-04-21 Verfahren zum Betreiben einer Waschmaschine und Waschmaschine

Publications (2)

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EP3085825A1 true EP3085825A1 (fr) 2016-10-26
EP3085825B1 EP3085825B1 (fr) 2017-11-29

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DE (1) DE102015106051A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022203316A1 (de) 2022-04-04 2023-10-05 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung und Verfahren zum Betrieb des Wäschepflegegeräts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478807B1 (fr) * 1990-09-28 1994-11-30 Siemens Aktiengesellschaft Machine à laver avec surveillance de la température du moteur
DE10361405A1 (de) * 2003-12-29 2005-07-28 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät mit einer Steueranordnung zum Betreiben eines elektrischen Motors
US20090066284A1 (en) * 2007-09-04 2009-03-12 Lg Electronics Inc. Laundry treatment machine and method of controlling the same
DE102014005706A1 (de) * 2014-04-22 2015-10-22 Diehl Ako Stiftung & Co. Kg Verfahren und Vorrichtung zum Betreiben eines Elektromotors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006060034A1 (de) * 2006-12-19 2008-06-26 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zum Messen der Betriebstemperatur eines Antriebsmotors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0478807B1 (fr) * 1990-09-28 1994-11-30 Siemens Aktiengesellschaft Machine à laver avec surveillance de la température du moteur
DE10361405A1 (de) * 2003-12-29 2005-07-28 BSH Bosch und Siemens Hausgeräte GmbH Wäschebehandlungsgerät mit einer Steueranordnung zum Betreiben eines elektrischen Motors
US20090066284A1 (en) * 2007-09-04 2009-03-12 Lg Electronics Inc. Laundry treatment machine and method of controlling the same
DE102014005706A1 (de) * 2014-04-22 2015-10-22 Diehl Ako Stiftung & Co. Kg Verfahren und Vorrichtung zum Betreiben eines Elektromotors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022203316A1 (de) 2022-04-04 2023-10-05 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Steuerung und Verfahren zum Betrieb des Wäschepflegegeräts
EP4269682A1 (fr) 2022-04-04 2023-11-01 BSH Hausgeräte GmbH Appareil d'entretien du linge doté d'une commande et procédé de fonctionnement de l'appareil d'entretien du linge

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Publication number Publication date
DE102015106051A1 (de) 2016-10-27
EP3085825B1 (fr) 2017-11-29

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