EP3085825B1 - Method for operating a washing machine and washing machine - Google Patents
Method for operating a washing machine and washing machine Download PDFInfo
- Publication number
- EP3085825B1 EP3085825B1 EP16020118.2A EP16020118A EP3085825B1 EP 3085825 B1 EP3085825 B1 EP 3085825B1 EP 16020118 A EP16020118 A EP 16020118A EP 3085825 B1 EP3085825 B1 EP 3085825B1
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- motor
- cycle
- measured
- motor temperature
- temperature
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- 238000005406 washing Methods 0.000 title claims description 37
- 238000000034 method Methods 0.000 title claims description 17
- 230000033764 rhythmic process Effects 0.000 claims description 27
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Classifications
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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
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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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
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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
- 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
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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
- 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 document DE 103 61 405 A1 relates to a laundry treatment appliance with a control arrangement for operating an electric motor. The control arrangement described therein causes operation of the apparatus such that the operating temperature of the engine does not exceed a predetermined threshold. 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 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 difference between the second maximum engine temperature to the first maximum engine temperature
- 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 rotation speed, the pause time and / or the washing rhythm shape 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 rotation cycle DZ 1 , a second rotation cycle DZ 2 and a third rotation cycle DZ 3 , which follow each other 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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Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Waschmaschine mit einer Trommel zur Aufnahme von Wäsche und einem Motor zum Antreiben der Trommel und eine entsprechend ausgebildete Waschmaschine. Wenn der Motor die Trommel während eines Waschprozesses antreibt, kann er sich erwärmen. Dies kann zu einer übermäßigen Belastung des Motors führen. Zudem kann eine Wärmeabfuhr bei verkapselten Motoren problematisch werden. Das Dokument
Erfindungsgemäß wird dieses Problem durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 und eine Waschmaschine mit den Merkmalen des Patentanspruchs 9 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.
Die mit der Erfindung erreichbaren Vorteile bestehen neben der Vorbeugung einer unerwünschten Erwärmung des Motors darin, dass die Wasch- und Spülwirkung eines Waschprozesses nicht beeinträchtigt wird. Auf einen unerwünschten Temperaturanstieg des Motors kann schnell regiert werden, ohne dass die Waschleistung darunter leidet.
Die Erfindung betrifft ein Verfahren zum Betreiben einer Waschmaschine mit einer Trommel zur Aufnahme von Wäsche und einem Motor zum Antreiben der Trommel, aufweisend die Schritte Messen einer Anfangs-Motortemperatur des Motors zu Beginn eines ersten Drehzyklus der Trommel, einer ersten Maximal-Motortemperatur während des ersten Drehzyklus, einer End-Motortemperatur am Ende des ersten Drehzyklus und einer zweiten Maximal-Motortemperatur während eines zweiten Drehzyklus, Ermitteln einer Differenz zwischen der gemessenen End-Motortemperatur und der gemessenen Anfangs-Motortemperatur und einer Differenz zwischen der gemessen zweiten Maximal-Motortemperatur und der gemessenen ersten Maximal-Motortemperatur und Regeln einer Drehzahl des Motors, einer Pausenzeit, während welcher der Motor deaktiviert ist, und/oder einer Waschrhythmusform für einen dritten Drehzyklus in Abhängigkeit der ermittelten Differenz zwischen der gemessenen End-Motortemperatur und der gemessenen Anfangs-Motortemperatur und der ermittelten Differenz zwischen der gemessen zweiten Maximal-Motortemperatur und der gemessenen ersten Maximal-Motortemperatur.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 document
According to the invention, this problem is solved by a method having the features of
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.
Die aktuelle Motortemperatur kann auf diese Weise rechnerisch erfasst und mittels Änderung von Einflussparametern wie der Dreh- bzw. Waschrhythmus vorteilhaft beeinflusst werden. Dadurch können Maßnahmen ergriffen werden, die einem weiteren Anstieg der Motortemperatur entgegenwirken. Mittels einer Analyse des Anstiegs der Motortemperatur in dem ersten und zweiten Drehzyklus kann eine Prognose über den weiteren Motortemperatur-Zeitverlauf errechnet werden, und für den dritten Drehzyklus können, wenn nötig, die Drehzahl des Motors, die Pausenzeit, während der der Motor deaktiviert ist, und/oder die Waschrhythmusform variiert und/oder im Vergleich zu dem zweites Drehzyklus verändert werden, um den weiteren Zeitverlauf der Motortemperatur vorteilhaft zu beeinflussen. Die Temperaturerfassung kann sensorgesteuert oder modellbasiert sein. Es werden die Absolut- und Differenz-Motortemperaturen von zwei aufeinanderfolgenden Drehzyklen ermittelt, und die Puls- und Pausenzeit, maximale Drehzahl und Form des Drehrhythmus des darauffolgenden Drehzyklus werden dadurch beeinflusst. Durch diese schnelle Reaktion ist nur eine kleine Anpassung nötig, um einem Anstieg der Motortemperatur entgegenzuwirken. Dies ist als Regelkreis zu sehen. Ein Drehzyklus ist im Sinne der Erfindung als ein vollständiger Drehrhythmus incl. Drehpause und Drehreversierung definiert. Dieses Verfahren ist insbesondere vorteilhaft, wenn der Motor ein verkapselter Motor beispielsweise ein BLPM (Brushless Permanent Magnet)-Motor ist.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. As a result, measures can be taken to counteract a further increase in engine temperature. By means of an analysis of the increase in engine temperature in the first and second turning cycles, 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. The absolute and differential motor temperatures of two consecutive rotation cycles are determined, and the pulse and pause time, maximum speed and shape of the rotational cycle of the following rotation cycle are thereby affected. Due to this fast response, only a small adjustment is necessary to counteract an increase in engine temperature. This can be seen as a loop. 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.
Die Differenz zwischen der zweiten Maximal-Motortemperatur und der ersten Maximal-Motortemperatur wird mittels Formel (1) berechnet:
Die Differenz zwischen der gemessenen End-Motortemperatur und der gemessenen Anfangs-Motortemperatur bzw. Motortemperaturdifferenz innerhalb des ersten Drehzyklus wird mittels Formel (2) berechnet:
Die Begriffe "erster, zweiter und dritter Drehzyklus" sind relativ zu verstehen, d.h. der erste Drehzyklus wird vor dem zweiten und der zweite vor dem dritten Drehzyklus durchgeführt. Vorzugsweise werden der erste, zweite und dritte Drehzyklus aufeinanderfolgend (d.h. ohne weiteren Drehzyklus zwischen ihnen) durchgeführt. Dann entsprechen die Anfangs-Motortemperatur des zweiten Drehzyklus der End-Motortemperatur des ersten Drehzyklus und die Anfangs-Motortemperatur des dritten Drehzyklus der End-Motortemperatur des zweiten Drehzyklus.The terms "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. Preferably, the 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.
Die in dem ersten und zweiten Drehzyklus gemessenen Motortemperaturen werden vorzugsweise am Ende des zweiten Drehzyklus ausgewertet. Die Ist-Motortemperatur ist in diesem Fall die End-Motortemperatur des zweiten Drehzyklus. Anhand der ermittelten Differenz zwischen der zweiten Maximal-Motortemperatur und der ersten Maximal-Motortemperatur und der ermittelten Differenz zwischen der End-Motortemperatur und der Anfangs-Motortemperatur des ersten Drehzyklus werden die Drehzahl des Motors, die Pausenzeit, während welcher der Motor deaktiviert ist, und/oder die Waschrhythmusform für den dritten sich dem zweiten Drehzyklus anschließenden Drehzyklus geregelt. Wenn die ermittelte Differenz zwischen der zweiten Maximal-Motortemperatur und der ersten Maximal-Motortemperatur und die ermittelte Differenz zwischen der End-Motortemperatur und der Anfangs-Motortemperatur des ersten Drehzyklus einen unerwünschten Anstieg der Motortemperatur im weiteren Zeitverlauf des Waschprozesses prognostizieren, werden für den dritten Drehzyklus im Vergleich zu dem zweiten Drehzyklus vorzugsweise die Drehzahl des Motors verringert, die Pausenzeit verlängert und/oder die Waschrhythmusform verändert. Wenn sie keinen unerwünschten Anstieg der Motortemperatur im weiteren Zeitverlauf des Waschprozesses prognostizieren, werden für den dritten Drehzyklus im Vergleich zu dem zweiten Drehzyklus vorzugsweise die Drehzahl des Motors, die Pausenzeit und/oder die Waschrhythmusform unverändert gelassen.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. When the determined difference between the second maximum engine temperature and the first maximum engine temperature and the detected difference between the end engine temperature and the initial engine temperature of the first turning cycle predict an undesirable increase in engine temperature in the further course of the washing process, for 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.
In einer bevorzugten Ausführungsform umfasst das Regeln der Drehzahl des Motors für den dritten Drehzyklus eine Änderung vorzugsweise Verringerung der Drehzahl des Motors im Vergleich zu der Drehzahl des Motors während des zweiten Drehzyklus, wenn die Differenz zwischen der gemessen zweiten Maximal-Motortemperatur und der gemessenen ersten Maximal-Motortemperatur größer ist als ein vorbestimmter erster Schwellenwert.In a preferred embodiment, 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.
Alternativ oder zusätzlich umfasst das Regeln der Pausenzeit, während welcher der Motor deaktiviert ist, für den dritten Drehzyklus vorzugsweise eine Änderung vorzugsweise Verlängerung der Pausenzeit im Vergleich zu der Pausenzeit des zweiten Drehzyklus, wenn die Differenz zwischen der gemessen zweiten Maximal-Motortemperatur und der gemessenen ersten Maximal-Motortemperatur größer ist als der vorbestimmte erste Schwellenwert.Alternatively or additionally, 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.
Das Regeln der Waschrhythmusform der Trommel für den dritten Drehzyklus umfasst vorzugsweise eine Änderung der Waschrhythmusform, wenn die Differenz zwischen der gemessen End-Motortemperatur und der gemessenen Anfangs-Motortemperatur des ersten Drehzyklus größer ist als ein vorbestimmter zweiter Schwellenwert.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.
Die Rechtecke 1, 2 und 3 in Tabelle 1 unterscheiden sich im Puls/Pausen-Verhältnis und der maximalen Drehzahl. Das Rechteck 3 ist ein Schonrhythmus.The
Vorzugsweise sind der erste Schwellenwert und der zweite Schwellenwert gleich. In einer bevorzugten Ausgestaltung des Verfahrens sind der vorbestimmte erste Schwellenwert und der vorbestimmte zweite Schwellenwert jeweils von der Ist-Motortemperatur abhängig, die die aktuelle Temperatur des Motors darstellt. Die Ist-Motortemperatur ist vorzugsweise die End-Motortemperatur des zweiten Drehzyklus d.h. die Motortemperatur am Ende des zweiten Drehzyklus. Vorzugsweise nehmen der vorbestimmte erste Schwellenwert und der vorbestimmte zweite Schwellenwert jeweils mit steigender Ist-Motortemperatur ab. D.h., die beiden vorbestimmten Schwellwerte werden mit steigender Ist-Motortemperatur kleiner, damit einem unerwünschten Motortemperatur-Anstieg schneller entgegengewirkt werden kann, je höher die Ist-Motortemperatur ist.Preferably, the first threshold and the second threshold are the same. In a preferred embodiment of the method, 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. Preferably, 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.
Vorzugsweise sind der vorbestimmte erste Schwellenwert und der vorbestimmte zweite Schwellenwert jeweils für vorbestimmte Ist-Motortemperaturbereiche vorbestimmt. Der vorbestimmte erste Schwellenwert und der vorbestimmte zweite Schwellenwert können jeweils bei der gleichen Ist-Motortemperatur gleich sein. Beispielsweise weist bei einer Ist-Motortemperatur kleiner als 50°C, der erste Schwellenwert einen vorbestimmten Wert w auf, weisen bei einer Ist-Motortemperatur im Bereich von 50 bis 75°C, der erste und der zweite Schwellenwert jeweils einen Wert x auf, weisen bei einer Ist-Motortemperatur im Bereich von76 bis 90°C der erste und zweite Schwellenwert jeweils einen vorbestimmten Wert y auf, und weisen bei einer Ist-Motortemperatur größer als 90°C der erste und zweite Schwellenwert jeweils einen vorbestimmten Wert z auf. Wenn die nach Formel (1) berechnete Differenz ΔTmax und/oder die nach Formel (2) berechnete Differenz ΔTZyklus kleiner als oder gleich zu den jeweiligen ersten bzw. zweiten Schwellenwerten sind, entsprechen die Drehzahl, die Pausenzeit und/oder die Waschrhythmusform für den dritten Drehzyklus vorzugsweise denen des zweiten Drehzyklus d.h. die im zweiten Drehzyklus verwendete Drehzahl, Pausenzeit und/oder Waschrhythmusform werden für den dritten Drehzyklus nicht verändert sondern unverändert beibehalten. Wenn die nach Formel (1) berechnete Differenz ΔTmax und/oder die nach Formel (2) berechnete Differenz ΔTZyklus größer als die in dem jeweiligen Ist-Motortemperaturbereichen angegebenen jeweiligen ersten und zweiten Schwellenwerte sind, werden die Drehzahl, die Pausenzeit und/oder die Waschrhythmusform vorzugsweise gemäß Tabelle 1 variiert.
Eine Dauer des ersten, zweiten und dritten Drehzyklus ist vorzugsweise kleiner oder gleich 60 Sek. Damit können Wäscheaufwickler vermieden werden. Eine maximale Pausenzeit beträgt vorzugsweise 10 Sek. Die Drehzahl des Motors liegt vorzugsweise im Bereich von 20 bis 75 U/min.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.
In einer bevorzugten Ausführungsform beträgt der erste Schwellenwert im Falle einer zweiten Maximal-Motortemperatur kleiner als 50°C 1,7 K. Im Falle einer Ist-Motortemperatur im Bereich von 50 bis 75°C, betragen der erste Schwellenwert und der zweite Schwellenwert jeweils vorzugsweise 1,4 K. Im Falle einer Ist-Motortemperatur im Bereich von 76 bis 90°C betragen vorzugsweise der erste Schwellenwert und der zweite Schwellenwert jeweils 1,1 K. Im Falle einer Ist-Motortemperatur größer 90°C betragen der erste Schwellenwert und der zweite Schwellenwert vorzugsweise jeweils 0,8 K.In a preferred embodiment, the first threshold in the case of a second maximum engine temperature is less than 50 ° C 1.7 K. In the case of an actual engine temperature in Range of 50 to 75 ° C, the first threshold and the second threshold are each preferably 1.4 K. In the case of an actual engine temperature in the range of 76 to 90 ° C are preferably the first threshold and the second threshold each 1.1 In the case of an actual engine temperature greater than 90 ° C., the first threshold value and the second threshold value are preferably 0.8 K.
Ferner betrifft die Erfindung eine Waschmaschine mit einer Trommel zur Aufnahme von Wäsche und einem Motor zum Antreiben der Trommel und einer Regeleinrichtung, wobei die Regeleinrichtung eingerichtet ist, in Abhängigkeit einer ermittelten Differenz zwischen einer am Ende eines ersten Drehzyklus gemessenen End-Motortemperatur und einer zu Beginn eines ersten Drehzyklus gemessenen Anfangs-Motortemperatur und einer ermittelten Differenz zwischen einer während eines zweiten Drehzyklus gemessen zweiten Maximal-Motortemperatur und einer während des ersten Drehzyklus gemessenen ersten Maximal-Motortemperatur eine Drehzahl des Motors, eine Pausenzeit, innerhalb der Motor deaktiviert ist, und/oder eine Waschrhythmusform der Trommel für einen dritten Drehzyklus zu regeln, gemäß dem vorstehenden Verfahren in einer oder mehreren der beschriebenen Ausführungsvarianten.Furthermore, 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.
Bei dem Motor handelt es sich vorzugsweise um einen verkapselten Motor d.h. in ein Gehäuse eingebauten Motor. In einer bevorzugten Ausführungsform ist der Motor ein BLPM (Brushless Permanent Magnet)-Motor. Die Waschmaschine weist vorzugsweise weiterhin eine Sensoreinrichtung zum Sensieren der Motortemperatur des Motors auf.The engine is preferably an encapsulated engine, i. built into a housing engine. In a preferred embodiment, 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.
Bei der Waschmaschine kann es sich um ein Haushaltsgerät oder ein gewerblich genutztes Gerät handeln. Der Begriff "Waschmaschine" umfasst eine Waschmaschine und/oder ein Kombigerät wie beispielsweise ein Waschtrockner.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.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt
- Fig. 1
- eine zeitliche Abfolge von Drehzyklen eines Motors einer Waschmaschine sowie dessen Motortemperatur- und Drehzahlverlauf.
- Fig. 1
- a time sequence of rotation cycles of an engine of a washing machine and its engine temperature and speed curve.
- DZ1 DZ 1
- erster Drehzyklusfirst turning cycle
- DZ2 Double room 2
- zweiter Drehzyklussecond turning cycle
- DZ3 DZ 3
- dritter Drehzyklusthird turning cycle
- Ta T a
- Anfangs-MotortemperaturInitial engine temperature
- Te T e
- End-MotortemperaturEnd engine temperature
- Tmaxn Tmax n
- zweite Maximal-Motortemperatursecond maximum motor temperature
- Tmaxn-1 Tmax n-1
- erste Maximal-Motortemperaturfirst maximum motor temperature
Claims (10)
- Method for operating a washing machine comprising a drum for receiving laundry and a motor for driving the drum, comprising the steps of- measuring an initial motor temperature (Ta) of the motor at the beginning of a first cycle (DZ1) of the drum, a first maximum motor temperatur (Tmaxn-1) during the first cycle (DZ1), a final motor temperature (Te) at the end of the first cycle (DZ1), and a second maximum motor temperature (Tmaxn) during a second cycle (DZ2),- determining a difference between the measured final motor temperature (Te) and the measured initial motor temperature (Ta), and a difference between the measured second maximum motor temperature (Tmaxn) and the measured first maximum motor temperature (Tmaxn-1), and- controlling a rotational speed of the motor, a pause time during which the motor is deactivated, and/or a washing rhythm form for a third cycle (DZ3) on the basis of the determined difference between the measured final motor temperature (Te) and the measured initial motor temperature (Ta), and of the determined difference between the measured second maximum motor temperature (Tmaxn) and the measured first maximum motor temperature (Tmaxn-1).
- Method according to claim 1, characterised in that controlling the rotational speed of the motor comprises changing the rotational speed of the motor, and/or controlling the pause time comprises changing the pause time when the difference between the measured second maximum motor temperature (Tmaxn) and the measured first maximum motor temperature (Tmaxn-1) is greater than a predetermined first threshold.
- Method according to either claim 1 or claim 2, characterised in that controlling the washing rhythm form of the drum comprises changing the washing rhythm form when the difference between the measured final motor temperature (Te) and the measured initial motor temperature (Ta) of the first cycle (DZ1) is greater than a predetermined second threshold.
- Method according to claims 2 and 3, characterised in that the predetermined first threshold and the predetermined second threshold are equal.
- Method according to claim 2 and claim 3 or 4, characterised in that the predetermined first threshold and the predetermined second threshold are each dependent on the actual motor temperature.
- Method according to claim 2 and claim 3, 4 or 5, characterised in that the predetermined first threshold and the predetermined second threshold each decrease as the actual motor temperature increases.
- Method according to claim 2 and claim 3, 4, 5 or 6, characterised in that the predetermined first threshold and the predetermined second threshold are each predetermined for predetermined actual motor temperature ranges.
- Method according to any of the preceding claims, characterised in that a duration of the first, second and third cycle (DZ1, DZ2, DZ3) is smaller than or equal to 60 seconds, a maximum pause time, during which the motor is deactivated, is 10 seconds, and the rotational speed of the motor is in the range of from 20 to 75 rpm.
- Washing machine comprising a drum for receiving laundry, a motor for driving the drum, and a controller, characterised in that the controller is designed to control a rotational speed of the motor, a pause time during which the motor is deactivated, and/or a washing rhythm form for a third cycle (DZ3), according to the method according to any of claims 1 to 8, on the basis of a determined difference between a final motor temperature (Te) measured at the end of a first cycle (DZ1) and an initial motor temperature (Ta) measured at the beginning of a first cycle (DZ1), and of a determined difference between a second maximum motor temperature (Tmaxn) measured during a second cycle (DZ2) and a first maximum motor temperature (Tmaxn-1) measured during the first cycle (DZ1).
- Washing machine according to claim 9, characterised in that the motor is a BLPM (brushless permanent magnet) motor.
Applications Claiming Priority (1)
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DE102015106051.5A DE102015106051A1 (en) | 2015-04-21 | 2015-04-21 | Method of operating a washing machine and washing machine |
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EP3085825A1 EP3085825A1 (en) | 2016-10-26 |
EP3085825B1 true EP3085825B1 (en) | 2017-11-29 |
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EP16020118.2A Active EP3085825B1 (en) | 2015-04-21 | 2016-04-07 | Method for operating a washing machine and washing machine |
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DE (1) | DE102015106051A1 (en) |
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DE102022203316A1 (en) | 2022-04-04 | 2023-10-05 | BSH Hausgeräte GmbH | Laundry care device with a control and method for operating the laundry care device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE59007871D1 (en) * | 1990-09-28 | 1995-01-12 | Siemens Ag | Automatic washing machine with monitoring of the engine temperature. |
DE10361405A1 (en) * | 2003-12-29 | 2005-07-28 | BSH Bosch und Siemens Hausgeräte GmbH | Laundry treatment device with a control arrangement for operating an electric motor |
DE102006060034A1 (en) * | 2006-12-19 | 2008-06-26 | BSH Bosch und Siemens Hausgeräte GmbH | Method and device for measuring the operating temperature of a drive motor |
KR20090024467A (en) * | 2007-09-04 | 2009-03-09 | 엘지전자 주식회사 | Control method of a laundry treatment machine |
DE102014005706B4 (en) * | 2014-04-22 | 2023-02-02 | Diehl Ako Stiftung & Co. Kg | Method and device for operating an electric motor |
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2015
- 2015-04-21 DE DE102015106051.5A patent/DE102015106051A1/en not_active Withdrawn
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