EP0997569B1 - Program control for a washing machine and process for washing of laundry - Google Patents
Program control for a washing machine and process for washing of laundry Download PDFInfo
- Publication number
- EP0997569B1 EP0997569B1 EP99119581A EP99119581A EP0997569B1 EP 0997569 B1 EP0997569 B1 EP 0997569B1 EP 99119581 A EP99119581 A EP 99119581A EP 99119581 A EP99119581 A EP 99119581A EP 0997569 B1 EP0997569 B1 EP 0997569B1
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- EP
- European Patent Office
- Prior art keywords
- laundry
- drum
- washing
- power consumption
- electric motor
- 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.)
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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
- 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
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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
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
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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
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
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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
- D06F2103/38—Time, e.g. duration
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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
- D06F2103/44—Current or voltage
- D06F2103/46—Current or voltage of the motor driving the drum
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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
- D06F2105/42—Detergent or additive supply
Definitions
- the power consumption of the electric motor is also saved via a drum-specific characteristic also determines the mechanical performance, with which the laundry in the drum is loaded. Because of inevitable Power losses are only a part of the absorbed by the engine Power available as mechanical power acting on the laundry. If the power consumption from the power grid is measured, the power losses, which by the engine electronics, the electric motor, the transmission on the drum and the water in the drum, be taken into account. Will that from the engine electronics to the electric motor power output measured, the power loss of the engine electronics not be included. In both cases, the amount acting on the laundry is mechanical power about 1/5 of the originally consumed power. The power losses that occur are taken into account in the drum-specific characteristic.
- the amount of used can Water and / or detergent adapted to the actual conditions be, thereby saving water and detergent, however also results from energy and time.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
Die Erfindung betrifft eine Programmsteuerung nach dem Oberbegriff des Anspruches 1 und ein Verfahren nach dem Oberbegriff des Anspruches 14.The invention relates to a program control according to the preamble of the claim 1 and a method according to the preamble of claim 14.
Die für den Patentanspruch 1 gattungsbildende DE 44 31 846 A1 beschreibt ein Verfahren zur Steuerung und/oder Regelung einer Waschmaschine oder eines Wäschetrockners, bei welchem die Beladung der Wäschetrommel gemessen wird, indem die Trommel zum einen mit konstanter Drehzahl und zum anderen mit konstanter Winkelbeschleunigung betrieben wird und die hierfür jeweils vom Antriebsmotor aufzubringenden Drehmomente verglichen werden. Diese Messung dient dazu, die Unwucht der Trommel zu bestimmen, um daraus die maximal mögliche Drehzahl im Schleuderbetrieb zu ermitteln.DE 44 31 846 A1, which is generic for claim 1, describes a Control and / or regulation method a washing machine or dryer, in which the loading of the Laundry drum is measured by the drum first with a constant Speed and on the other hand is operated with constant angular acceleration and comparing the torques to be applied by the drive motor for this purpose become. This measurement is used to determine the imbalance of the drum to determine the maximum possible speed in spin operation.
Diese Bestimmung der Trommelbeladung ist aufwendig, da die beladene Trommel erst in zwei verschiedenen Betriebsarten (konstante Drehzahl und konstante Winkelbeschleunigung) eine gewisse Zeit laufen muß, die dabei jeweils vom Motor aufzubringenden Drehmomente erfaßt und schließlich ausgewertet werden müssen. This determination of the drum loading is complex because the drum is loaded only in two different operating modes (constant speed and constant angular acceleration) a certain time must run, each time from the engine Torques to be applied must be recorded and finally evaluated.
Während die Waschtechnologie, die auf einem periodischen Anheben der Wäsche der Schwerkraft entgegen nach oben basiert, ehe sie wieder in die Waschlauge zurückfällt, die in der um eine horizontale Drehachse angetriebenen Trommel steht, typisch für die in Europa anzutreffenden Verhältnisse ist, beschreibt die US 4,862,710 die Waschtechnologie nach amerikanischem Standard, bei dem die Wäsche in einer Trommel mit vertikaler Achse von einem Agitator durch die Waschlauge bewegt und anschließend bei Antrieb der Trommel um ihre vertikale Achse entfeuchtet wird. In jener Vorveröffentlichung wird ausgeführt, dass bei dieser Waschtechnologie die Wäsche zu Beginn des Waschvorganges nur eine geringe mechanische Beeinflussung erfährt, weil sie zunächst noch im wesentlichen auf der Oberfläche der Waschlauge schwimmt. Deshalb sei es nicht aussichtsreich, aus dem Waschvorgang, zumal zu Beginn, Informationen über die aktuelle Beladung ableiten zu wollen. Statt dessen wird dort gelehrt, aus dem elektrischen Verhalten des Antriebsmotors beim Trockenschleudern nach Abschluss des Waschens Informationen über die Beladung abzuleiten. Diese Informationen stehen deshalb für den Waschvorgang selbst und seine Optimierung noch nicht zur Verfügung.During the washing technology, which is based on a periodic lifting of the laundry based on the force of gravity before it is again in the wash liquor falls back in the drum driven around a horizontal axis of rotation is typical for the conditions encountered in Europe, the US describes 4,862,710 the washing technology according to American standards, in which the laundry in a vertical axis drum from an agitator through the wash liquor moved and then when the drum is driven about its vertical axis is dehumidified. In that prior publication it is stated that this Washing technology the laundry at the beginning of the washing process only a small one undergoes mechanical interference because initially it is still essentially the surface of the wash liquor floats. Therefore it is not promising from the washing process, especially at the beginning, information about the current load want to derive. Instead, it teaches from electrical behavior of the drive motor during spin drying after washing is complete Derive information about the load. This information is therefore available not yet available for the washing process itself and its optimization.
Der Erfindung liegt dagegen die Aufgabe zugrunde, eine Programmsteuerung bzw. ein Verfahren gattungsgemäßer Art anzugeben, welche die Beladung der Wäschetrommel einfach und schnell erfassen, um sie bei der Durchführung des Waschprogramms berücksichtigen zu können.The invention is based on the object of program control or to specify a method of the generic type, which the loading of the Easily and quickly grasp the laundry drum to help you carry it out To be able to take into account the washing program.
Diese Aufgabe wird durch eine Programmsteuerung der eingangs genannten Art gelöst, welche die Merkmale des kennzeichnenden Teils des Anspruchs 1 aufweist. Weiterbildungen und Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben. This task is accomplished by program control of the type mentioned at the beginning solved, which has the features of the characterizing part of claim 1. Further developments and refinements of the invention are described in the subclaims.
Wird die Leistungsaufnahme des Elektromotors, der die Wäschetrommel antreibt, gemessen, kann aus ihr auf die Trommelbeladung zurückgeschlossen werden. Ist die Wäschetrommel voll beladen, muß der Elektromotor nur die Reibung und beim Beschleunigen die Massenträgheit überwinden und nimmt deshalb nur eine verhältnismäßig geringe Leistung auf. Ist die Trommel dagegen nicht voll beladen (zum Beispiel nur halb voll), muß der Motor die gesamte Wäsche entgegen der Schwerkraft nach oben befördern, bevor sie wieder nach unten fällt, ohne daß dabei - wie es bei voll beladener Trommel der Fall ist - Schwung auf die Wäschetrommel zurück übertragen wird. Deshalb benötigt der Elektromotor hier insgesamt eine höhere Leistung, weshalb seine Leistungsaufnahme verhältnismäßig groß ist.Is the power consumption of the electric motor that drives the laundry drum measured, it can be concluded from the drum loading. is the laundry drum fully loaded, the electric motor only has to rub and Accelerate to overcome the inertia and therefore takes only one proportionally low performance. However, if the drum is not fully loaded (for example, only half full), the engine has to do all the laundry against the Move gravity upwards before it falls down again without doing so - as is the case with a fully loaded drum - swing on the laundry drum is transferred back. That is why the electric motor needs a total here a higher power, which is why its power consumption is relatively large is.
Die Leistungsaufnahme des Elektromotors kann während des normalen Waschbetriebes oder auch beim Hochlaufen des Motors auf eine vorbestimmte Drehzahl bzw. beim Halten einer vorbestimmten Drehzahl erfaßt werden. Die Bestimmung der Leistungsaufnahme erfolgt durch Messen des Motorstromes, der Motordrehzahl und der am Motor anliegenden elektrischen Spannung, der Leistungsaufnahme aus dem Stromnetz oder der von der Elektronik zur Motorsteuerung abgegebenen Leistung.The power consumption of the electric motor can be reduced during normal washing operation or also when the engine is ramped up to a predetermined speed or are detected when holding a predetermined speed. The determination the power consumption takes place by measuring the motor current, the motor speed and the electrical voltage applied to the motor, the power consumption from the power grid or from the electronics for motor control Power.
Aus der Leistungsaufnahme des Elektromotors kann bei Kenntnis der auftretenden Verlustleistungen die auf die in der Trommel befindliche Wäsche einwirkende mechanische Leistung bestimmt werden. Bei höherer Leistungsaufnahme des Motors wird auch eine höhere mechanische Leistung an die Wäsche abgegeben. Ist nun durch die Ermittlung der Leistungsaufnahme des Elektromotors die Beladung der Wäschetrommel und die auf die Wäsche einwirkende mechanische Leistung bekannt, wird der Ablauf des Waschprogramms derart gestaltet, daß die Wäsche bzw. eine vorbestimmte Menge an Wäsche während des gesamten Waschprogramms stets mit etwa der gleichen, vorbestimmbaren mechanischen Energie beaufschlagt wird, unabhängig davon, ob die Wäschetrommel voll ist oder nicht.From the power consumption of the electric motor with knowledge of the occurring Power losses the mechanical acting on the laundry in the drum Performance can be determined. With higher power consumption of the engine a higher mechanical output is also given to the laundry. Is now by determining the power consumption of the electric motor, the loading of the Laundry drum and the mechanical power acting on the laundry are known, the course of the washing program is designed so that the laundry or a predetermined amount of laundry during the entire washing program always applied with approximately the same, predeterminable mechanical energy regardless of whether the laundry drum is full or not.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher erläutert. The invention is explained in more detail below using an exemplary embodiment.
Während des ersten Waschzyklus wird die Leistungsaufnahme des Elektromotors bestimmt. Mißt die Antriebselektronik des Motors die Netzstromaufnahme, wie dies zum Beispiel bei Antrieben mit Spannungszwischenkreis und aktiv gesteuerter Stromaufnahme (PFC) der Fall ist, erfolgt sinnvoller Weise eine Messung der elektrischen Leistungsaufnahme dieser Elektronik aus dem Stromnetz. Mißt die Motorelektronik die Netzstromaufnahme nicht, erfolgt eine Messung der von der Elektronik an den Motor abgegebenen Leistung. Der auf diese Weise gemessene Wert der Leistungsaufnahme des Elektromotors wird mit für verschiedene Trommelfüllstände zum Beispiel in der Programmsteuerung gespeicherten Werten verglichen und so die Beladung der Wäschetrommel bestimmt.During the first wash cycle, the power consumption of the electric motor certainly. Does the drive electronics of the motor measure the mains current consumption, such as This is the case, for example, for drives with a DC link and actively controlled Current consumption (PFC) is the case, a measurement of the electrical power consumption of this electronics from the power grid. Measures that Motor electronics does not use the mains current, a measurement is made of the Electronics power delivered to the engine. The one measured in this way The value of the power consumption of the electric motor is also used for different drum levels for example compared values stored in the program control and so determines the loading of the laundry drum.
Aus der Leistungsaufnahme des Elektromotors wird darüber hinaus über eine gespeicherte, trommelspezifische Kennlinie auch die mechanische Leistüng bestimmt, mit der die in der Trommel befindliche Wäsche beaufschlagt wird. Wegen unvermeidlicher Leistungsverluste steht nur ein Teil der vom Motor aufgenommenen Leistung als auf die Wäsche einwirkende mechanische Leistung zur Verfügung. Wird die Leistungsaufnahme aus dem Stromnetz gemessen, müssen die Leistungsverluste, welche durch die Motorelektronik, den Elektromotor, die Transmission auf die Trommel und das in der Trommel befindliche Wasser verursacht werden, berücksichtigt werden. Wird die von der Motorelektronik an den Elektromotor abgegebene Leistung gemessen, braucht die Verlustleistung der Motorelektronik nicht mit einbezogen werden. In beiden Fällen beträgt die auf die Wäsche einwirkende mechanische Leistung etwa 1/5 der ursprünglich aufgenommenen Leistung. Die auftretenden Leistungsverluste sind in der trommelspezifischen Kennlinie berücksichtigt.The power consumption of the electric motor is also saved via a drum-specific characteristic also determines the mechanical performance, with which the laundry in the drum is loaded. Because of inevitable Power losses are only a part of the absorbed by the engine Power available as mechanical power acting on the laundry. If the power consumption from the power grid is measured, the power losses, which by the engine electronics, the electric motor, the transmission on the drum and the water in the drum, be taken into account. Will that from the engine electronics to the electric motor power output measured, the power loss of the engine electronics not be included. In both cases, the amount acting on the laundry is mechanical power about 1/5 of the originally consumed power. The power losses that occur are taken into account in the drum-specific characteristic.
Anstatt die Leistungsverluste der einzelnen Komponenten der Wirkungskette Motorelektronik-Elektromotor-Transmission-Waschtrommel zu ermitteln, kann auch der jeweilige Wascherfolg bei verschiedenen vorgegebenen Werten der Leistungsaufnahme bestimmt und z. B. in Form einer Kennlinie gespeichert werden.Instead of the loss of performance of the individual components of the motor electronics-electric motor-transmission-washing drum function chain can also determine the respective washing success with different specified values of the power consumption determined and z. B. stored in the form of a characteristic curve.
Die Programmsteuerung berücksichtigt nun die Beladung der Wäschetrommel und die auf die Wäsche einwirkende mechanische Leistung bzw. Waschleistung und gestaltet den Ablauf des Waschprogramms derart, daß die Wäsche bzw. eine vorbestimmte Menge an Wäsche unabhängig von der Trommelbeladung stets mit etwa der gleichen, vorbestimmbaren mechanischen Leistung bzw. Waschleistung beaufschlagt wird. Dies kann geschehen, indem während des gesamten Waschvorgangs die Leistungsaufnahme des Elektromotors gemessen, aus dieser die auf die Wäsche einwirkende mechanische Leistung bzw. Waschleistung bestimmt wird und so lange gewaschen wird, bis die durch Aufintegration dieser mechanischen Leistung bzw. Waschleistung über den gesamten Waschvorgang ermittelte insgesamt auf die Wäsche übertragene mechanische Energie bzw. Wascharbeit einen für ein befriedigendes Waschergebnis erforderlichen Wert erreicht. Wird nur zu Beginn des Waschprogramms die Leistungsaufnahme des Elektromotors gemessen, wird aus dieser die notwendige Waschdauer errechnet. Bei niedriger Leistungsaufnahme des Elektromotors, d. h. bei voll beladener Wäschetrommel und verhältnismäßig geringer Übertragung mechanischer Leistung auf das einzelne Wäschestück, ist das Waschprogramm von längerer Dauer als bei hoher Leistungsaufnahme des Elektromotors, d. h. bei nur teilweiser Beladung der Wäschetrommel und verhältnismäßig hoher Übertragung mechanischer Leistung an das einzelne Wäschestück. Statt der Dauer des gesamten Waschprogramms kann auch die Dauer einzelner Waschzyklen oder der Reversierzyklen der Wäschetrommel verändert werden.The program control now takes into account the loading of the laundry drum and the mechanical performance or washing performance acting on the laundry and designs the sequence of the washing program such that the laundry or a predetermined one The amount of laundry regardless of the drum load is always about the same, predeterminable mechanical performance or washing performance becomes. This can be done throughout the washing process the power consumption of the electric motor measured, from this the on the laundry acting mechanical performance or washing performance is determined and so long is washed until by integrating this mechanical power or washing performance over the entire washing process determined on the total Mechanical energy transferred to laundry or laundry work one for a satisfactory one Washing result required value reached. Will only be at the beginning of the Washing program the power consumption of the electric motor is measured is off this calculates the necessary washing time. At low power consumption of the Electric motor, d. H. with a fully loaded laundry drum and relatively less Transfer of mechanical power to the individual item of laundry is that Washing program of longer duration than when the electric motor consumes a lot of power, d. H. with only partial loading of the laundry drum and relatively high transfer of mechanical power to the individual laundry. Instead of the duration of the entire washing program, the duration of individual ones Washing cycles or the reversing cycles of the laundry drum can be changed.
Es sei angemerkt, daß bei niedriger Leistungsaufnahme des Elektromotors deshalb ein längeres Waschprogramm notwendig ist, weil zum einen mehr Wäsche gewaschen werden muß und zum anderen diese größere Menge an Wäsche auch noch mit verhältnismäßig niedriger mechanischer Leistung bzw. Waschleistung beaufschlagt wird. Demgegenüber wird das Waschprogramm bei höherer Leistungsaufnahme des Elektromotors verkürzt, da weniger Wäsche zu waschen ist und diese mit verhältnismäßig hoher mechanischer Leistung bzw. Waschleistung beaufschlagt wird. Auf diese Weise erreicht man eine Einsparung von Zeit und elektrischer Energie.It should be noted that when the power consumption of the electric motor is low a longer washing program is necessary because, on the one hand, more laundry is washed must be and on the other hand this larger amount of laundry with relatively low mechanical performance or washing performance becomes. In contrast, the washing program with higher power consumption of the electric motor because there is less laundry to wash and this with relatively high mechanical performance or washing performance becomes. This saves time and electrical energy Energy.
Alternativ oder zusätzlich wird in dem Fall geringerer Trommelbeladung die Leistungsaufnahme des Elektromotors verringert. Damit wird eine unnötige, übermäßige mechanische Beanspruchung der Wäsche verhindert. Gleichzeitig bleibt aber gewährleistet, daß die Wäsche stets mit der gewünschten mechanischen Energie bzw. Waschleistung beaufschlagt wird, um ein befriedigendes Waschergebnis sicherzustellen, auch wenn die Wäschetrommel voll beladen ist. Alternatively or additionally, in the case of lower drum loading, the power consumption of the electric motor is reduced. This will make it unnecessary, excessive prevents mechanical stress on the laundry. At the same time remains ensures that the laundry always with the desired mechanical energy or washing performance is applied to ensure a satisfactory washing result, even if the laundry drum is fully loaded.
Durch die Kenntnis der Beladung der Wäschetrommel kann die Menge des verwendeten Wassers und/oder Waschmittels den tatsächlichen Bedingungen angepaßt werden, wodurch sich eine Einsparung von Wasser und Waschmittel, aber auch von Energie und Zeit ergibt.By knowing the load on the laundry drum, the amount of used can Water and / or detergent adapted to the actual conditions be, thereby saving water and detergent, however also results from energy and time.
Eine Einsparung an Wasser wird vorzugsweise dadurch erreicht, daß das Wasserniveau in der Wäschetrommel nach dem Erreichen eines bestimmten Mindestfüllstandes noch so lange erhöht wird, bis die Leistungsaufnahme des Elektromotors einen vorbestimmten Wert erreicht. Diesem Verfahren liegt die Tatsache zugrunde, daß die Leistungsaufnahme des Elektromotors nicht nur von der Wäschemenge, sondern auch von der Wassermenge in der Wäschetrommel abhängt. Bei einer Wäscheteilbeladung (z. B. bei halber Beladung) ist die Leistungsaufnahme des Elektromotors schon aufgrund der Beladung hoch, weshalb das Wasser nicht über den Mindestfüllstand hinaus eingefüllt wird, sondern mit der Mindestfüllmenge gewaschen wird, was in diesem Fall der Teilbeladung auch ausreichend ist. Bei einer vollen Beladung der Wäschetrommel dagegen ist die Leistungsaufnahme des Elektromotors aufgrund der Beladung gering. Deshalb wird über den Mindestfüllstand hinaus Wasser zugeführt, bis der Elektromotor die vorbestimmte Leistungsaufnahme erreicht. Dadurch ist sichergestellt, daß bei einer vollen Trommelbeladung, bei der eine größere Menge an Waschwasser benötigt wird, auch mit mehr Wasser gewaschen wird.A saving in water is preferably achieved in that the water level in the laundry drum after reaching a certain minimum level is increased until the power consumption of the electric motor reaches a predetermined value. This procedure is based on the fact that the power consumption of the electric motor depends not only on the amount of laundry, but also depends on the amount of water in the drum. With a laundry load (e.g. at half load) is the power consumption of the electric motor already high due to the load, which is why the water does not exceed the Minimum fill level is filled in, but washed with the minimum fill quantity becomes what is sufficient in this case of partial loading. At a full load of the laundry drum, however, is the power consumption of the electric motor low due to the load. Therefore, the minimum fill level addition, water is supplied until the electric motor reaches the predetermined power consumption reached. This ensures that with a full drum load, where a larger amount of wash water is required, even with more water is washed.
Eine Einsparung an Waschmittel wird bei einer automatischen Waschmittel-Dosiervorrichtung vorzugsweise dadurch erreicht, daß der Wäschetrommel bei Teilbeladung weniger Waschmittel zugeführt wird.An automatic detergent dosing device saves on detergent preferably achieved in that the laundry drum at Partial load less detergent is supplied.
Bei den heute am häufigsten verwendeten Waschprogrammen mit niedrigeren Wassertemperaturen (bis zu 60° Celsius) hat die Waschmechanik gegenüber der Heizung einen merklichen Anteil am gesamten Energieverbrauch. Somit führt die oben beschriebene Energieeinsparung durch Verkürzung des Waschprogramms und/oder Verringerung der Leistungsaufnahme des Elektromotors bei Teilbeladung der Wäschetrommel zu einer merklichen Einsparung der benötigten Gesamtenergie. Eine Einsparung an Zeit wird bevorzugt dadurch erreicht, daß bei einer Teilbeladung der Wäschetrommel die Waschphasen und/oder die Spülphasen verkürzt bzw. dann abgebrochen werden, wenn der Wäsche ausreichend mechanische Energie zugeführt wurde.In today's most frequently used wash programs with lower ones The washing mechanism has water temperatures (up to 60 ° Celsius) compared to Heating a noticeable part of the total energy consumption. Thus the Energy saving described above by shortening the washing program and / or reducing the power consumption of the electric motor when partially loaded the laundry drum for a noticeable saving in the total energy required. A saving of time is preferably achieved in that a partial load the washing drum shortens the washing phases and / or the rinsing phases or then be canceled when the laundry has sufficient mechanical energy was fed.
Wird bei einer ursprünglich höheren Leistungsaufnahme durch den Elektromotor selbige verringert, weil z. B. eine höhere auf die Wäsche einwirkende mechanische Leistung bzw. Waschleistung nicht benötigt wird, können die Leistungsstufe der Motoransteuerelektronik, die Leistungshalbleiter, die Kühlkörper und auch der Elektromotor selbst für kleinere Dauerleistungen dimensioniert werden, ohne daß dies einen negativen Einfluß auf den Wascherfolg hat.Is at an originally higher power consumption by the electric motor same reduced because z. B. a higher mechanical acting on the laundry Power or washing power is not required, the power level of Motor control electronics, the power semiconductors, the heat sink and also the Electric motor can be dimensioned even for smaller continuous outputs without this has a negative impact on the washing success.
Abschließend sei noch bemerkt, daß die Leistungsaufnahme des Elektromotors auch dann niedrig ist, wenn sich nur sehr wenige Wäschestücke in der Trommel befinden. Aber auch dann ist die auf diese wenigen Wäschestücke übertragene mechanische Leistung bzw. Waschleistung verhältnismäßig gering, da die einzelnen Wäschestücke kaum mehr aneinander reiben. Demnach ist es auch hier vorteilhaft, die Dauer des Waschprogramms gemäß dem beschriebenen Ausführungsbeispiel der Erfindung zu verlängern, um den gewünschten Wascherfolg zu sichern.Finally, it should be noted that the power consumption of the electric motor even if there are very few items in the drum are located. But even then the mechanical is transferred to these few items of laundry Performance or washing performance relatively low, because the individual Hardly rubbing items together. Accordingly, it is also advantageous here the duration of the washing program according to the described embodiment to extend the invention to ensure the desired washing success.
Claims (14)
- Programme control for washing machines, which detects the load in a laundry drum driven by an electric motor and takes said load into account when carrying out a washing programme,
characterized in that
the load in the drum is determined by measuring the power consumption of the electric motor driving the laundry drum,
in that the mechanical power acting on the laundry in the drum is determined from the power consumption of the electric motor by way of a stored drum-specific characteristic curve, and
in that the chronological sequence of the washing programme is such that the laundry or a predetermined amount of laundry is always acted upon, irrespective of the drum load, with the same, predeterminable mechanical energy. - Programme control according to Claim 1,
characterized in that
the power consumption of the electric motor is measured during the washing operation. - Programme control according to Claim 1 or 2,
characterized in that
the power consumption of the electric motor is measured when the motor runs up to a predetermined speed or when it maintains a predetermined speed. - Programme control according to one of Claims 1 to 3,
characterized in that
the power consumption of the electric motor is determined by measuring the motor current or the motor speed and the electric voltage applied to the motor. - Programme control according to one of the preceding claims,
characterized in that
the power consumption of the electric motor is determined by means of the power drawn from the mains supply. - Programme control according to one of the preceding claims,
characterized in that
the power consumption of the electric motor is determined from the power delivered by the electronics to the motor control. - Programme control according to one of the preceding claims,
characterized in that
a full load in the laundry drum corresponds to a low power consumption and a smaller load in the drum corresponds to a higher power consumption. - Programme control according to Claim 1,
characterized in that
with low power consumption of the electric motor, i.e. with fully loaded laundry drum and with relatively low mechanical power acting upon the laundry, the washing programme is of longer duration and/or the duration of operation of the reversing cycles is greater. - Programme control according to Claim 1,
characterized in that
with higher power consumption of the electric motor, i.e. with only a partial load in the laundry drum and with relatively high mechanical power acting upon said laundry, the washing programme is of shorter duration and/or the duration of operation of the reversing cycles is less. - Programme control according to one of Claims 1, 8 or 9,
characterized in that
the duration of the washing programme is selected so that the mechanical energy determined by integrating the mechanical power acting on the laundry over the entire washing operation and transferred as a whole to the laundry reaches a value necessary for a satisfactory washing result. - Programme control according to one of the preceding claims,
characterized in that
when a higher power consumption by the electric motor is detected, indicating a smaller load in the laundry drum and thus a higher mechanical power acting on the laundry, the power draw of the electric motor is reduced - Programme control according to one of the preceding claims,
characterized in that
the quantity of water used is adjusted to the load in the laundry drum, by continuing to supply water, after a minimum level of the water has been exceeded, until the power needed for driving the drum reaches a predetermined value. - Programme control according to one of the preceding claims,
characterized in that
the quantity of detergent used is adjusted to the load in the laundry drum in that, with the provision of automatic dosing means for the detergent, less detergent is added when there is a partial load in said drum. - Method of washing laundry in a laundry drum, which is driven by an electric motor and in which the laundry is conveyed upwards against the force of gravity before dropping down again,
characterized in that
the measured electric power consumption of the driving motor serves as measurement for the mechanical energy acting upon the laundry in the drum, and in that this washing operation is ended when the energy sum as the time integral of the mechanical energy input, measured as electric power consumption, has reached a value which is preset depending on how heavily the laundry drum is actually filled with laundry, the measure of this filling of the drum being the power consumption of the motor during the first washing cycle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19849403A DE19849403A1 (en) | 1998-10-27 | 1998-10-27 | Program control for washing machines |
| DE19849403 | 1998-10-27 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0997569A2 EP0997569A2 (en) | 2000-05-03 |
| EP0997569A3 EP0997569A3 (en) | 2001-07-11 |
| EP0997569B1 true EP0997569B1 (en) | 2004-01-14 |
Family
ID=7885737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99119581A Expired - Lifetime EP0997569B1 (en) | 1998-10-27 | 1999-10-02 | Program control for a washing machine and process for washing of laundry |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0997569B1 (en) |
| AT (1) | ATE257871T1 (en) |
| DE (2) | DE19849403A1 (en) |
| ES (1) | ES2214787T3 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112005000188B4 (en) * | 2004-11-11 | 2020-11-26 | Lg Electronics Inc. | Washing machine and control method for it |
| DE102008019921A1 (en) * | 2008-04-21 | 2009-10-22 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic appliance for drying laundry items and method for operating such a domestic appliance |
| KR100988625B1 (en) * | 2008-05-26 | 2010-10-18 | 엘지전자 주식회사 | Washing machine and method for controlling washing machine |
| US8578532B2 (en) | 2009-07-22 | 2013-11-12 | Whirlpool Corporation | Laundry treating appliance with controlled mechanical energy |
| DE102009028358B4 (en) * | 2009-08-07 | 2012-03-08 | BSH Bosch und Siemens Hausgeräte GmbH | Laundry treatment device with an electric motor |
| US9945060B2 (en) | 2012-01-19 | 2018-04-17 | Whirlpool Corporation | Method to determine fabric type in a laundry treating appliance using motor current signature during agitation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63226395A (en) * | 1987-03-14 | 1988-09-21 | 株式会社東芝 | Detector for quantity of clothing of washing machine combining dehydration |
| NZ236543A (en) * | 1990-12-19 | 1995-11-27 | Fisher & Paykel | Electronic control of laundry machine motor for agitation |
| US5161393A (en) * | 1991-06-28 | 1992-11-10 | General Electric Company | Electronic washer control including automatic load size determination, fabric blend determination and adjustable washer means |
| US5577283A (en) * | 1995-03-20 | 1996-11-26 | General Electric Company | Energy efficient washer with inertia based method for determining load |
| DE4431846C2 (en) * | 1994-09-07 | 2001-02-15 | Diehl Ako Stiftung Gmbh & Co | Method for load-dependent control and / or regulation of a washing machine or a tumble dryer |
-
1998
- 1998-10-27 DE DE19849403A patent/DE19849403A1/en not_active Withdrawn
-
1999
- 1999-10-02 DE DE59908294T patent/DE59908294D1/en not_active Expired - Lifetime
- 1999-10-02 ES ES99119581T patent/ES2214787T3/en not_active Expired - Lifetime
- 1999-10-02 EP EP99119581A patent/EP0997569B1/en not_active Expired - Lifetime
- 1999-10-02 AT AT99119581T patent/ATE257871T1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59908294D1 (en) | 2004-02-19 |
| ATE257871T1 (en) | 2004-01-15 |
| EP0997569A3 (en) | 2001-07-11 |
| ES2214787T3 (en) | 2004-09-16 |
| EP0997569A2 (en) | 2000-05-03 |
| DE19849403A1 (en) | 2000-05-04 |
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