EP1540065A1 - Method for operating a programmable washing machine - Google Patents

Method for operating a programmable washing machine

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Publication number
EP1540065A1
EP1540065A1 EP03794869A EP03794869A EP1540065A1 EP 1540065 A1 EP1540065 A1 EP 1540065A1 EP 03794869 A EP03794869 A EP 03794869A EP 03794869 A EP03794869 A EP 03794869A EP 1540065 A1 EP1540065 A1 EP 1540065A1
Authority
EP
European Patent Office
Prior art keywords
laundry
drum
user
program
crease
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
EP03794869A
Other languages
German (de)
French (fr)
Other versions
EP1540065B1 (en
Inventor
Ingo Schulze
Martina Wöbkemeier
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1540065A1 publication Critical patent/EP1540065A1/en
Application granted granted Critical
Publication of EP1540065B1 publication Critical patent/EP1540065B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying only
    • 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
    • D06F2101/00—User input 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
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user

Definitions

  • the invention relates to a method for operating a programmable washing machine with a laundry drum rotatably arranged within a tub, which can be moved depending on the program with different speed profiles in both directions of rotation and with a real-time clock, via which the user can determine the start or end of the wash cycle himself.
  • a number of washing machine manufacturers offer devices in which an anti-crease function is permanently installed in the program as a section downstream of the final spin.
  • the anti-crease program section is specified in the same and fixed manner with regard to the duration and sequence for all types of laundry and all loads.
  • the user of the washing machine only has the option to switch off the anti-crease. No further interventions are planned.
  • the laundry ring has a very disadvantageous effect if a dryer is integrated in the washing machine.
  • a non-detached laundry ring prevents the laundry from drying evenly and quickly.
  • many washing machines have an anti-crease step after spinning. The drum is pressed for a short period of time
  • Speed below the applied speed is moved in several intervals against the direction of rotation when spinning. In many cases this is sufficient to detach and untangle the laundry from the drum.
  • DE 41 15 776 A1 Such a reversal of the direction of rotation for untangling the laundry in the drum is known from DE 41 15 776 A1 as an intermediate step in rinsing and spinning, the focus here being not on crease protection, but on redistributing the laundry in the drum for better rinsing or rinsing of the individual laundry pieces.
  • DE 198 31 617 A1 describes a method for determining the amount of laundry in a drum, in which several laundry detangling steps are provided for error correction.
  • DE 19947 307 C1 describes a method in which, after the final spin cycle, a program section follows in which the detachment of a laundry ring from the drum inner wall is checked by measurement. For this purpose, the mechanical vibrations of the tub by falling laundry are recorded. This is done by
  • Evaluation of the dynamic signal component of a position or force sensor or by evaluating the signals of an acceleration sensor In order to avoid misinterpretation of the measurement data with very small amounts of laundry, the weight value that was determined during the washing process or entered by the user is included in the internal evaluation by the microprocessor control. After recognizing a laundry ring, an attempt is made to replace the laundry ring by activating the drum drive with short and strong acceleration or braking pulses. The success of this measure is then checked by re-evaluating the sensor signal.
  • the described method also does not offer any possibility to intervene in the automatically running program and to individually manipulate the user wishes and experiences.
  • the success of the described method in relation to the detachment of a laundry ring adhering to the inner wall of the drum depends solely on the sensitivity and accuracy of the sensors, which is problematic with very small amounts of laundry or very light laundry.
  • the invention has for its object to provide an improved method for loosening the laundry after the final spin, in which the user according to his wishes and experience within a wide range himself the anti-crease program can determine. It is also an object of the invention to support the user as much as possible in the selection of the adjustable and selectable parameters for the execution of the anti-crease program and to improve the detection of a laundry ring. According to the invention, the object is achieved by the features listed in the main claim. Additional advantageous embodiments of the inventive method are specified in the subclaims.
  • the invention represents an extension and further improvement of known washing methods with regard to gentle treatment of the laundry, in particular with regard to an optimal loosening of the textiles after spinning.
  • the user is given the opportunity to actively influence the program.
  • the anti-crease program can be freely programmed in accordance with the invention with regard to its start and end time, the duration and the sequence.
  • the user can independently design the anti-crease according to the given individual conditions, as well as his personal wishes and experiences.
  • the user is supported by the program through the internal determination of default values for the manipulable parameters and by checking the detachment of washing rings that form on the inner wall of the drum when spinning.
  • the invention is explained in more detail below using a program example shown in the drawing.
  • This example is based on a washing machine with an intelligent expert system and a display on which the important information is made visible to the user and with which a dialog operation with the user is possible.
  • the program sequence is shown schematically in a speed-time diagram, specific details being dispensed with, since these are of no importance for an understanding of the invention.
  • the washing machine is operated in the "washing" and "rinsing" operations starting at time t ws in a reversing manner at low speeds, ie with a changing direction of rotation.
  • the flanks of the reversing cycles are shown as perpendicular in the diagram, in reality the drum 1 becomes slow, i.e. Energy-saving accelerated to the target speed.
  • the subsequent anti-crease operation is intended to loosen the laundry in the drum and to maintain this state over time in order to prevent the laundry which has already been loosened in the drum from being pressed together again in an undesirable manner by lying for too long, forming folds and the like nd it is difficult to remove individual items of laundry.
  • this program section which is after the spinning, is determined by reversing the drum at constant speed, as well as a constant duration of rotation and rest phases until the predetermined end - the parameters for this section can be freely selected the washing machine system supports the user in such a way that the user is guided over the display.
  • the programming of the anti-crease process is described below.
  • the system asks on the display whether anti-crease is desired. After confirmation by the user, a period of time is shown on the display, which is determined by the intelligent evaluation system depending on the type of textile and from a stock of preset values stored in the memory and how it is determined according to the anti-crease process after the final spin. The user can extend or shorten this specified time by making appropriate entries. As an alternative to the runtime of the anti-crease, the user can select the "end of program" function and use it to determine the time at which the program switches off. The duration of the anti-crease operation then automatically results from the time difference between the time of the final spin t we and the selected end time t e .
  • the values set by the user for the anti-crease operation are checked internally by the control using the selected laundry care program, including the additional parameters for compatibility. Selects the user or If the speed is too high for delicate textiles, this is shown in the display, e.g. by repeated flashing of the numerical value.
  • All default values automatically displayed by the system are derived from stored measurement data, which was obtained from a large number of comparison tests, from the washing program selected by the user, including the additional parameters entered, and the drum loading quantity determined by a suitable sensor system.
  • the values determined by the internal evaluation system and shown on the display are determined on the premise of ensuring effective but also energy-saving anti-crease protection. In the event that anti-crease is desired by the user, but is not specified by any inputs, the program runs according to the default values.
  • the first section after spinning is controlled by the intelligent expert system and runs automatically.
  • the duration of this first section depends on the achievement of a target function, ie on the achievement of predetermined state variables, which can serve as a criterion for the detachment of the laundry ring adhering to the inside of the drum after the final spin and for a loose, untangled laundry. Suitable for this are mechanical, acoustic and optical sizes such as speed curve, torque, unbalance, impact noise, reflection and scattered light.
  • the detachment of the laundry ring is checked by measuring one or more of these state variables in the reversing phases at the start of the anti-crease process and comparing them with target data that were determined as a criterion for loosened and untangled laundry.
  • the target measured values are determined in a short analysis section (t a ) preceding the actual start of the washing program (time t ws ), in which the drum is moved in two short sections at different speeds.
  • the speed of the first phase is equal to the speed selected for anti-crease, in the second phase the drum is moved at the application speed A.
  • the measured values from the first section correspond to the desired state of a loosened, untangled amount of laundry items which is intended by the anti-crease.

Abstract

Operation of the subsequent anti-creasing process can be manipulated by user

Description

Verfahren zum Betreiben einer programmierbaren Method of operating a programmable
WaschmaschineWashing machine
Die Erfindung betrifft ein Verfahren zum Betreiben einer programmierbaren W aschma- schine mit einer innerhalb eines Laugenbehälters drehbar angeordneten Wäschetrommel, die programmabhängig mit unterschiedlichen Drehzahlprofilen in beiden Drehrichtungen bewegbar ist und mit einer Echtzeituhr, über die der Nutzer Beginn oder Ende des Waschgangs selbst bestimmen kann.The invention relates to a method for operating a programmable washing machine with a laundry drum rotatably arranged within a tub, which can be moved depending on the program with different speed profiles in both directions of rotation and with a real-time clock, via which the user can determine the start or end of the wash cycle himself.
Von einer Reihe von Waschmaschinenherstellern werden Geräte angeboten, bei denen eine Knitterschutz-Funktion im Programm als ein dem Endschleudern nachgeordneter Abschnitt fest installiert ist. Bei diesen bekannten Geräten ist der Knitterschutz- Programmabschnitt bzgl. Dauer und Ablauf für alle Wäschearten und alle Beladungsmengen gleich und fest vorgegeben. Der Nutzer der Waschmaschine hat nur die Möglichkeit, den Knitterschutz auszuschalten. Weitere Eingriffe sind nicht vorgesehen.A number of washing machine manufacturers offer devices in which an anti-crease function is permanently installed in the program as a section downstream of the final spin. In the case of these known devices, the anti-crease program section is specified in the same and fixed manner with regard to the duration and sequence for all types of laundry and all loads. The user of the washing machine only has the option to switch off the anti-crease. No further interventions are planned.
Bei Waschmaschinen kommt es regelmäßig dazu, dass sich beim Schleudern m it den heute üblichen hohen Drehzahlen an der Trommelinnenwand ein Wäschering ausbildet, der sich auch nach dem Anhalten der Trommel oft nicht ablöst. Dies führt zu verstärkterIn washing machines, it is regularly the case that when spinning with the usual high speeds of rotation on the inside of the drum, a washing ring is formed, which often does not come off even after the drum has stopped. This leads to increased
Knitterbildung u nd e rschwert d as E ntladen d er Trommel. S ehr n achteilig wirkt s ich d er Wäschering aus, wenn in dem Waschautomaten ein Trockner integriert ist. Ein nicht abgelöster Wäschering behindert ein gleichmäßiges und schnelles Trocknen des Waschgutes. Dem zu begegnen, ist bei vielen Waschmaschinen ein Knitterschutz-Arbeitsgang dem Schleudern nachgeschaltet. Dabei wird die Trommel über eine kurze Zeitspanne mit einerWrinkle formation and sword unloading the drum. The laundry ring has a very disadvantageous effect if a dryer is integrated in the washing machine. A non-detached laundry ring prevents the laundry from drying evenly and quickly. To counter this, many washing machines have an anti-crease step after spinning. The drum is pressed for a short period of time
Drehzahl unterhalb der Anlegedrehzahl in mehreren Intervallen entgegen der beim Schleudern ausgeführten Drehrichtung bewegt. Dies reicht in vielen Fällen aus, die Wäsche von der Trommel abzulösen und zu entwirren.Speed below the applied speed is moved in several intervals against the direction of rotation when spinning. In many cases this is sufficient to detach and untangle the laundry from the drum.
Bekannt ist eine solche Drehrichtungsumkehr zum Entwirren des Waschgutes in der Trommel aus der DE 41 15 776 A1 als Zwischenschritt beim Spülen und Schleudern, wobei hier nicht der Knitterschutz im Vordergrund steht, sondern das Umverteilen des Waschgutes in der Trommel zur besseren Aus- bzw. Reinspülung der einzelnen Wäsche- stücke. In der DE 198 31 617 A1 wird ein Verfahren zur Bestimmung der Wäschemenge in einer Trommel beschrieben, bei dem zur Fehlerkorrektur mehrere Wäscheentwirrungsschritte vorgesehen sind.Such a reversal of the direction of rotation for untangling the laundry in the drum is known from DE 41 15 776 A1 as an intermediate step in rinsing and spinning, the focus here being not on crease protection, but on redistributing the laundry in the drum for better rinsing or rinsing of the individual laundry pieces. DE 198 31 617 A1 describes a method for determining the amount of laundry in a drum, in which several laundry detangling steps are provided for error correction.
Die vorbeschriebenen Verfahren mit den fest vorgegebenen Parametern für Drehzahl, Beschleunigung und Bremsgeschwindigkeit sind in Bezug auf einen wirksamen Knitterschutz nicht optimal. Mit den bekannten Verfahren bzw. Verfahrensschritten kann die Knitterschutzfunktion n icht a n d ie u nterschiedlichen Bedingungen wie B eladungsmenge und textile Eigenschaften des Waschgutes angepasst werden. Die Verfahren bieten auch keine ausreichende Sicherheit, dass sich der Wäschering wirklich ablöst. Dies ist insbe- sondere problematisch bei Drehzahlen über 1400 min"1, bei denen der Wäschering an der Trommelinnenwand fest anhaftet und in sich relativ stabil ist.The methods described above with the fixed parameters for speed, acceleration and braking speed are not optimal in terms of effective anti-crease protection. With the known processes or process steps, the anti-crease function cannot be adapted to the different conditions, such as the load quantity and textile properties of the laundry. The processes also do not offer sufficient certainty that the laundry ring really comes off. This is problematic in particular at speeds over 1400 min "1, in which the ring of laundry in the drum inner wall is firmly adhered, and is relatively stable.
In der DE 19947 307 C1 wird ein Verfahren beschrieben, bei dem nach dem Endschleudern ein Programmabschnitt folgt, in dem das Ablösen eines Wäscheringes von der Trommelinnenwand messtechnisch kontrolliert wird. Dazu werden die mechanischen Er- schütterungen des Laugenbehälters durch fallendes Waschgut erfasst. Dies erfolgt durchDE 19947 307 C1 describes a method in which, after the final spin cycle, a program section follows in which the detachment of a laundry ring from the drum inner wall is checked by measurement. For this purpose, the mechanical vibrations of the tub by falling laundry are recorded. This is done by
Auswertung d es d ynamischen S ignalanteils e ines L age- o der K raftsensors o der d urch Auswertung der Signale eines Beschleunigungssensors. Um Fehldeutungen der Messdaten bei sehr geringen Wäschemengen zu vermeiden, wird der Gewichtswert, der während des Wasch prozesses ermittelt oder vom Nutzer eingegeben wurde, bei der internen Aus- wertung durch die Mikroprozessor-Steuerung mit einbezogen. Nach Erkennen eines Wäscheringes wird versucht, durch Ansteuerung des Trommelantriebes mit kurzen und starken Beschleunigungs- bzw. Bremsimpulsen den Wäschering abzulösen. Der Erfolg dieser Maßnahme wird anschließend durch erneute Auswertung des Sensorsignals überprüft.Evaluation of the dynamic signal component of a position or force sensor or by evaluating the signals of an acceleration sensor. In order to avoid misinterpretation of the measurement data with very small amounts of laundry, the weight value that was determined during the washing process or entered by the user is included in the internal evaluation by the microprocessor control. After recognizing a laundry ring, an attempt is made to replace the laundry ring by activating the drum drive with short and strong acceleration or braking pulses. The success of this measure is then checked by re-evaluating the sensor signal.
Das beschriebene Verfahren b ietet e benfalls keine Möglichkeit, e ntsprechend d en N ut- zerwünschen und -erfahrungen in das automatisch ablaufende Programm einzugreifen und individuell zu manipulieren. Der Erfolg des beschriebenen Verfahrens in Bezug auf die Ablösung eines an der Trommelinnenwand anhaftenden Wäscheringes hängt allein von der Empfindlichkeit und Genauigkeit der Sensorik ab, was bei sehr geringen Wäschemengen oder sehr leichter Wäsche problematisch ist. Der Erfindung liegt die Aufgabe zugrunde, ein verbessertes Verfahren für das Auflockern des Waschgutes nach dem Endschleudern anzugeben, bei dem der Nutzer seinen Wünschen und Erfahrungen gemäß das Knitterschutz-Programm in weiten Grenzen selber bestimmen kann. Es ist weiterhin Aufgabe der Erfindung, den Nutzer bei der Auswahl der einstellbaren und von ihm wählbaren Parametern für den Ablauf des Knitterschutz- Programms weitestmöglich zu unterstützen und das Detektieren eines Wäscheringes zu verbessern. Gemäß der Erfindung wird die Aufgabe durch die im Hauptanspruch aufgeführten Merkmale gelöst. Zusätzliche vorteilhafte Ausgestaltungen des erfinderischen Verfahrens sind in den Unteransprüchen angegeben.The described method also does not offer any possibility to intervene in the automatically running program and to individually manipulate the user wishes and experiences. The success of the described method in relation to the detachment of a laundry ring adhering to the inner wall of the drum depends solely on the sensitivity and accuracy of the sensors, which is problematic with very small amounts of laundry or very light laundry. The invention has for its object to provide an improved method for loosening the laundry after the final spin, in which the user according to his wishes and experience within a wide range himself the anti-crease program can determine. It is also an object of the invention to support the user as much as possible in the selection of the adjustable and selectable parameters for the execution of the anti-crease program and to improve the detection of a laundry ring. According to the invention, the object is achieved by the features listed in the main claim. Additional advantageous embodiments of the inventive method are specified in the subclaims.
Die Erfindung stellt eine Erweiterung und weitere Verbesserung bekannter Waschverfahren dar im Hinblick auf ein schonendes Behandeln der Wäsche, insbesondere in bezug auf ein optimales Auflockern der Textilien nach dem Schleudern. Dabei wird dem Nutzer die Möglichkeit geboten, auf das Programm aktiv einzuwirken. Erfindungswesentlich ist, dass das Knitterschutz-Programm nach Maßgabe der Erfindung bzgl. seiner Start- und Endezeit, der Laufdauer und des Ablaufs frei programmiert werden kann. Der Nutzer kann den Knitterschutz entsprechend den gegebenen individuellen Bedingungen, sowie nach seinen persönlichen W ünschen und Erfahrungen eigenständig gestalten. Dabei wird in Ausgestaltung der Erfindung der Nutzer vom Programm unterstützt durch die interne Ermittlung von Vorgabewerten für die manipulierbaren Parameter und durch die Kontrolle des Ablösens von Wäscheringen, die sich beim Schleudern an der Trommelinnenwand bilden. Die Erfindung wird nachstehend an einem in der Zeichnung dargestellten Programmbeispiel ausführlicher erläutert.The invention represents an extension and further improvement of known washing methods with regard to gentle treatment of the laundry, in particular with regard to an optimal loosening of the textiles after spinning. The user is given the opportunity to actively influence the program. It is essential to the invention that the anti-crease program can be freely programmed in accordance with the invention with regard to its start and end time, the duration and the sequence. The user can independently design the anti-crease according to the given individual conditions, as well as his personal wishes and experiences. In an embodiment of the invention, the user is supported by the program through the internal determination of default values for the manipulable parameters and by checking the detachment of washing rings that form on the inner wall of the drum when spinning. The invention is explained in more detail below using a program example shown in the drawing.
Bei diesem Beispiel wird ausgegangen von einer Waschmaschine mit einem intelligenten Expertensystem und einer Displayanzeige, auf der die wichtigen Informationen dem Benutzer sichtbar gemacht werden, und mit der ein Dialogbetrieb mit dem Nutzer möglich ist. Der Programmablauf ist schematisch in einem Drehzahl-Zeit-Diagramm dargestellt, wobei auf spezifische Einzelheiten verzichtet wurde, da diese für das Verständnis der Erfindung ohne Bedeutung sind. D ie Waschmaschine wird während der Arbeitsgänge „Waschen" und „Spülen" beginnend zum Zeitpunkt tws mit niedrigen Drehzahlen reversierend, d.h. mit wechselnder Drehrichtung betrieben. Aus Gründen der Vereinfachung sind in dem Dia- gramm die Flanken der Reversierzyklen als Senkrechte dargestellt, in der Realität wird die Trommel l angsam, d .h. energiesparend a uf d ie Solldrehzahl b eschleunigt. D as Gleiche gilt auch für die Reversierzyklen des Knitterschutz-Arbeitsganges. Der Waschphase nachfolgend sind, erkennbar an den hohen Drehzahlen, ein Spülabschnitt und zwei Schleuder-Arbeitsgänge mit einem zwischengeschalteten Auflockerungs- Arbeitsgang dargestellt, bei dem die Wäschetrommel mit gegenüber dem Schleudern verringerter Drehzahl aber entgegengesetzter Drehrichtung bewegt wird. Nach dem End- schleudern, das mit der maximalen Drehzahl ausgeführt wird, ist zum Zeitpunkt tWΘ das eigentliche Waschprogramm beendet.This example is based on a washing machine with an intelligent expert system and a display on which the important information is made visible to the user and with which a dialog operation with the user is possible. The program sequence is shown schematically in a speed-time diagram, specific details being dispensed with, since these are of no importance for an understanding of the invention. The washing machine is operated in the "washing" and "rinsing" operations starting at time t ws in a reversing manner at low speeds, ie with a changing direction of rotation. For the sake of simplicity, the flanks of the reversing cycles are shown as perpendicular in the diagram, in reality the drum 1 becomes slow, i.e. Energy-saving accelerated to the target speed. The same applies to the reverse cycles of the anti-crease operation. Following the washing phase, recognizable by the high speeds, a rinsing section and two spinning operations are shown with an intermediate loosening operation, in which the laundry drum is moved at a speed which is lower than the spinning but in the opposite direction of rotation. After the final spin, which is carried out at the maximum speed, the actual washing program ends at time t WΘ .
Der anschließende Knitterschutz-Arbeitsgang soll die Wäsche in der Trommel auflockern und diesen Zustand über die Zeit beibehalten, um zu verhindern, dass die in der Trommel bereits aufgelockerte Wäsche durch zu langes Liegen in unerwünschter Weise wieder zusammen gedrückt wird, s ich Falten a usbilden u nd d as Herausnehmen d er e inzelnen Wäschestücke erschwert wird. Vom kurzen Abschnitt zu Beginn des Knitterschutz- Arbeitsganges abgesehen, ist dieser dem Schleudern nachgeordnete Programmabschnitt bestimmt durch ein Reversieren der Trommel mit konstanter Drehzahl, sowie gleichbleibender Dauer von Dreh- und Ruhephasen bis zum vorbestimmten Ende - Die Parameter für diesen Abschnitt sind frei auswählbar, dabei wird der Nutzer vom System der Waschmaschine in der Weise unterstützt, dass der Nutzer über das Display geführt wird. Nachfolgend wird die Programmierung des Knitterschutz-Arbeitsganges beschrieben.The subsequent anti-crease operation is intended to loosen the laundry in the drum and to maintain this state over time in order to prevent the laundry which has already been loosened in the drum from being pressed together again in an undesirable manner by lying for too long, forming folds and the like nd it is difficult to remove individual items of laundry. Apart from the short section at the beginning of the anti-crease operation, this program section, which is after the spinning, is determined by reversing the drum at constant speed, as well as a constant duration of rotation and rest phases until the predetermined end - the parameters for this section can be freely selected the washing machine system supports the user in such a way that the user is guided over the display. The programming of the anti-crease process is described below.
Nach der üblichen Programmauswahl für den Waschprozess und der Eingabe zusätzlicher Parameter zur Manipulation des Waschprogramms wird vom System über das Dis- play abgefragt, ob der Knitterschutz erwünscht ist. Nach der Bestätigung durch den Nutzer wird auf dem Display eine Zeitdauer angezeigt, die textilartabhängig von dem intelligenten Auswertesystem aus einem Vorrat von im Speicher fest hinterlegten Vorgabewerten e rmittelt w ird u nd d ie b estimmt, w ie l ange d er K nitterschutz-Arbeitsgang n ach d em Endschleudern dauern soll. Der Nutzer kann diese vorgegebene Zeit durch entsprechen- de Eingaben verlängern oder verkürzen. Alternativ zu der Laufzeit des Knitterschutzes kann der Nutzer die Funktion „Programmende-Zeit" auswählen und darüber die Uhrzeit bestimmen, zu der das Programm abschaltet. Die Dauer des Knitterschutz-Arbeitsganges ergibt sich dann automatisch aus der Zeitdifferenz zwischen dem Zeitpunkt des End- schleuderns twe und der gewählten Endezeit te. Eine fehlerhafte Eingabe der Endezeit durch den Nutzer, etwa in der Weise, dass die gewählte Endezeit vor dem Ende des End- schleudems liegt, führt nicht zum Programmabbruch, sondern bewirkt lediglich, dass dem Parameter „Programmdauer" der Wert „Null" zugeordnet wird, der Knitterschutz also gar nicht aktiviert wird. Nachfolgend werden dem Nutzer Werte im Display angezeigt für die Parameter „Drehzahl", „Drehdauer" und „Zeitintervall", die der Nutzer bestätigten oder nach oben bzw. nach unten korrigieren kann.After the usual program selection for the washing process and the entry of additional parameters for manipulating the washing program, the system asks on the display whether anti-crease is desired. After confirmation by the user, a period of time is shown on the display, which is determined by the intelligent evaluation system depending on the type of textile and from a stock of preset values stored in the memory and how it is determined according to the anti-crease process after the final spin. The user can extend or shorten this specified time by making appropriate entries. As an alternative to the runtime of the anti-crease, the user can select the "end of program" function and use it to determine the time at which the program switches off. The duration of the anti-crease operation then automatically results from the time difference between the time of the final spin t we and the selected end time t e . An incorrect entry of the end time by the user, for example in such a way that the selected end time is before the end of the final spin cycle, does not result in the program being terminated, but merely causes the "program duration" parameter the value "zero" is assigned, that is to say the crease protection is not activated at all. The user is then shown values in the display for the Parameters "speed", "duration of rotation" and "time interval", which the user can confirm or correct upwards or downwards.
Die vom Nutzer eingestellten Werte für den Knitterschutz-Arbeitsgang werden steuerungsintern mit dem ausgewählten Wäschepflegeprogramm, einschließlich der Zusatzparameter a uf V erträglichkeit ü berprüft. Wählt d er N utzer b spw. für e mpfindliche Textilarten eine zu hohe Drehzahl, wird dies im Display angezeigt, bspw. durch wiederholtes Aufblinken des Zahlenwertes.The values set by the user for the anti-crease operation are checked internally by the control using the selected laundry care program, including the additional parameters for compatibility. Selects the user or If the speed is too high for delicate textiles, this is shown in the display, e.g. by repeated flashing of the numerical value.
Alle vom System automatisch angezeigten Vorgabewerte werden abgeleitet aus speicherhinterlegten Messdaten, die aus einer Vielzahl von Vergleichsversuchen gewonnen wurden, aus dem vom Nutzer ausgewählten Waschprogramm einschließlich der zusätzlich eingegebenen Parameter und der von einem geeigneten Sensorsystem festgestellten Beladungsmenge der Trommel. Die vom internen Auswertesystem ermittelten und auf dem Display angezeigten Werte werden unter der Prämisse bestimmt, einen wirksamen, aber auch möglichst energiesparenden Knitterschutz zu gewährleisten. Für den Fall, dass der Knitterschutz vom Nutzer gewünscht, aber durch keinerlei Eingaben spezifiziert wird, läuft das Programm nach Maßgabe der Vorgabewerte ab.All default values automatically displayed by the system are derived from stored measurement data, which was obtained from a large number of comparison tests, from the washing program selected by the user, including the additional parameters entered, and the drum loading quantity determined by a suitable sensor system. The values determined by the internal evaluation system and shown on the display are determined on the premise of ensuring effective but also energy-saving anti-crease protection. In the event that anti-crease is desired by the user, but is not specified by any inputs, the program runs according to the default values.
Der erste Abschnitt nach dem Schleudern, beginnend vom Zeitpunkt twe, wird vom intelligenten Expertensystem gesteuert und läuft automatisch ab. Die Dauer dieses ersten Abschnittes ist abhängig vom Erreichen einer Zielfunktion, d.h. vom Erreichen vorbestimmter Zustandsgrößen, die als Kriterium für ein Ablösen des nach dem Endschleudern an der Trommelinnenwand anhaftenden Wäscheringes und für ein lockeres, entwirrtes Waschgut gelten können. D azu g eeignet s ind mechanische, a kustische u nd o ptische G rößen w ie z.B. Drehzahlverlauf, Drehmoment, Unwucht, Aufschlaggeräusche, Reflexions- und Streulicht. Das Ablösen des Wäscheringes wird dadurch kontrolliert, dass zu Beginn des Knit- terschutz-Arbeitsganges in den Reversierphasen eine oder mehrere dieser Zustandsgrößen messtechnisch aufgenommen werden und diese mit Solldaten verglichen werden, die als Kriterium für aufgelockerte und entwirrte Wäsche ermittelt wurden. Die Sollmesswerte werden ermittelt in einem, dem eigentlichen Beginn des Waschprogramms (Zeitpunkt tws), vorgelagerten kurzen Analyseabschnitt (ta), bei dem die Trommel in zwei kurzen Ab- schnitten mit verschiedenen Drehzahlen bewegt wird. Die Drehzahl der ersten Phase ist gleich der für den Knitterschutz gewählten Drehzahl, in der zweiten Phase wird die Trommel mit der Anlegedrehzahl A bewegt. Die Messwerte aus dem ersten Abschnitt entsprechen dem durch den Knitterschutz angestrebten Sollzustand einer aufgelockerten, entwirrten Menge von Wäschestücken. Beim Drehen der Trommel mit Anlegedrehzahl wirrten Menge von Wäschestücken. Beim Drehen der Trommel mit Anlegedrehzahl wird der Zustand messtechnisch erfasst, der als Endzustand unbedingt vermieden werden soll. Extreme Abweichungen, verursacht durch das Beladen der Trommel mit Nasswäsche, werden steuerungsintern korrigiert. Durch diese Vorgehensweise wird die Kontrollmess- einrichtung bei jedem Waschgang neu kalibriert. Insbesondere durch die Relation zweier Messwerte werden Vergleichswerte ermittelt, mit denen Fehler beim Erkennen eines Wäscheringes, hervorgerufen durch unterschiedliche, insbesondere sehr geringe Beladungsmengen- oder -gewichte, durch textilspezifische Eigenschaften oder anderen eher zufälligen Besonderheiten des Waschgutes, weitestgehend vermieden werden können. The first section after spinning, starting from time t we , is controlled by the intelligent expert system and runs automatically. The duration of this first section depends on the achievement of a target function, ie on the achievement of predetermined state variables, which can serve as a criterion for the detachment of the laundry ring adhering to the inside of the drum after the final spin and for a loose, untangled laundry. Suitable for this are mechanical, acoustic and optical sizes such as speed curve, torque, unbalance, impact noise, reflection and scattered light. The detachment of the laundry ring is checked by measuring one or more of these state variables in the reversing phases at the start of the anti-crease process and comparing them with target data that were determined as a criterion for loosened and untangled laundry. The target measured values are determined in a short analysis section (t a ) preceding the actual start of the washing program (time t ws ), in which the drum is moved in two short sections at different speeds. The speed of the first phase is equal to the speed selected for anti-crease, in the second phase the drum is moved at the application speed A. The measured values from the first section correspond to the desired state of a loosened, untangled amount of laundry items which is intended by the anti-crease. When rotating the drum at the application speed tangled amount of laundry items. When the drum rotates at the application speed, the state is recorded by measurement, which should definitely be avoided as the final state. Extreme deviations caused by loading the drum with wet laundry are corrected internally by the control system. This procedure means that the control measuring device is recalibrated with every wash. In particular, the relationship between two measured values is used to determine comparison values with which errors in the detection of a laundry ring, caused by different, in particular very low loading quantity or weights, by textile-specific properties or other rather random peculiarities of the laundry, can be largely avoided.

Claims

P at e n t a n s p r ü c h e P at claims
1. Verfahren z um B etreiben e iner p rogrammierbaren Waschmaschine mit einer i nner- halb eines Laugenbehälters drehbar angeordneten Wäschetrommel, die programmabhängig mit unterschiedlichen Drehzahlprofilen in beiden Drehrichtungen bewegbar ist und mit einer Echtzeituhr, über die der Nutzer Beginn oder Ende des Waschganges bestimmen kann, sowie mit einem den Programmabschnitten Waschen und Schleudern nachgeschalteten Knitterschutz-Arbeitsgang zur Auflockerung der Wäsche in der Trommel, verbunden mit einem Zwischenschritt, bei dem der Trommelantrieb mit kurzen und starken Beschleunigungs- bzw. Bremsimpulsen angetrieben wird, um das Ablösen eines beim Schleudern entstandenen, an der Trommelinnenwand anliegenden Wäscheringes zu bewirken und bei dem das erfolgreiche Auflösen des Wäscheringes mittels Vergleichsmessdaten kontrolliert wird, die von der Programmsteuerung selbsttätig ermittelt werden, dadurch gekennzeichnet, dass der nachgeschaltete Knitterschutz-Arbeitsgang vom Nutzer manipulierbar ist.1. Method for operating a programmable washing machine with a laundry drum rotatably arranged within a tub, which can be moved in different directions depending on the program with different speed profiles and with a real-time clock via which the user can determine the start or end of the wash cycle , as well as an anti-crease step following the program sections washing and spinning to loosen up the laundry in the drum, combined with an intermediate step in which the drum drive is driven with short and strong acceleration or braking pulses in order to detach a spinning to effect laundry ring lying on the inner wall of the drum and in which the successful dissolving of the laundry ring is controlled by means of comparison measurement data which are automatically determined by the program control, characterized in that the subsequent anti-crease operation is carried out by the groove is manipulable.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass vom Nutzer die Start- und Endezeit des gesamten Waschprogramms einschließlich des Knitterschutz- Arbeitsganges oder die Dauer des nachgeschalteten Knitterschutz-Arbeitsganges frei wählbar sind, sowie die Drehzahl, die Drehdauer und die Zeitintervalle zwischen den Drehphasen.2. The method according to claim 1, characterized in that the user can freely select the start and end time of the entire washing program including the anti-crease operation or the duration of the subsequent anti-crease operation, as well as the speed, the duration of rotation and the time intervals between the rotation phases ,
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Nutzer bei der Programmierung des Knitterschutz-Programmabschnitts mittels eines Display geführt und unterstützt wird, in der Weise, dass das Programm dem Nutzer über das Display Werte für die Parameter Drehzahl, Drehdauer, Dauer der Ruhephasen und Gesamtdauer vorgibt, die als günstiger Mittelwert steuerungsintern aus einer Vielzahl, in Vergleichsversuchen ermittelten und im Speicher hinterlegten Messdaten, aus dem vom Nutzer ausgewählten Waschprogramm einschließlich der zusätzlich eingegebenen Parameter u nd a us der s ensorisch festgestellten B eladung d er Trommel a bgeleitet werden, und dass diese Vorgabewerte vom Nutzer nach oben bzw. nach unter verändert werden können. 3. The method according to claim 1 or 2, characterized in that the user is guided and supported in the programming of the anti-crease program section by means of a display, in such a way that the program provides the user with values for the parameters speed, rotation time, Duration of the rest phases and total duration, which specifies as a favorable mean value within the control system from a large number of measurement data determined in comparative tests and stored in the memory, from the washing program selected by the user, including the additionally entered parameters and from the sensor-determined loading of the drum and that these default values can be changed by the user upwards or downwards.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die vom Nutzer eingestellten Werte für den Knitterschutz-Arbeitsgang steuerungsintern mit dem ausgewählten Wäschepflegeprogramm einschließlich der Zusatzparameter verglichen und auf Verträglichkeit überprüft werden, und dass ein unverträglicher Wert im Display angezeigt wird.4. The method according to any one of claims 1 to 3, characterized in that the values set by the user for the anti-crease operation in the control are compared with the selected laundry care program including the additional parameters and checked for compatibility, and that an incompatible value is shown on the display.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass durch wiederholtes Aufblinken der Displayanzeige auf einen unverträglichen Wert hingewiesen wird.5. The method according to claim 4, characterized in that an incompatible value is indicated by repeated flashing of the display.
6. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass für e ine Kontrolle d es Ablösens d es Wäscheringes von d er Trommelinnenwand zu Beginn des Knitterschutz-Arbeitsganges in den Reversierphasen mechanische, akustische und/oder optische Messdaten aufgenommen werden und diese m it entsprechenden Messdaten verglichen werden, die aus einem dem Waschprogramm vorgeschalteten kurzen Analyseabschnitt gewonnen werden.6. The method according to any one of the preceding claims, characterized in that for a control of the detachment of the laundry ring from the inner wall of the drum at the beginning of the anti-crease operation, mechanical, acoustic and / or optical measurement data are recorded in the reversing phases and these are recorded with it corresponding measurement data are compared, which are obtained from a short analysis section upstream of the washing program.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Vergleichsdaten beim Drehen der Wäschetrommel mit Anlegedrehzahl und bei einer Drehzahl aufgenommen werden, die vom Nutzer für den Knitterschutz festgelegt wurde.7. The method according to claim 6, characterized in that the comparison data are recorded when the laundry drum is rotated at the application speed and at a speed that has been defined by the user for the anti-crease.
8. Verfahren nach Anspruch 1, 2, 6 oder 7, dadurch gekennzeichnet, dass bei Erkennen eines Wäscheringes die Wäschetrommel kurzzeitig mit hohen Beschleunigungs- und Bremsimpulsen bewegt wird und dass bei wiederholter Registrierung eines Wäscheringes die Wäschetrommel zur Ablösung des Wäscheringes mit schrittweise gesteigerten Beschleunigungs- und Bremsimpulsen bewegt wird. 8. The method according to claim 1, 2, 6 or 7, characterized in that upon detection of a laundry ring, the laundry drum is briefly moved with high acceleration and braking pulses and that, when a laundry ring is repeatedly registered, the laundry drum for detaching the laundry ring with gradually increasing acceleration. and braking pulses is moved.
EP03794869A 2002-09-09 2003-08-12 Method for operating a programmable washing machine Expired - Lifetime EP1540065B1 (en)

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