EP1417369A1 - Method for operating a programmable washing machine and a washing machine suited therefor - Google Patents

Method for operating a programmable washing machine and a washing machine suited therefor

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Publication number
EP1417369A1
EP1417369A1 EP02748715A EP02748715A EP1417369A1 EP 1417369 A1 EP1417369 A1 EP 1417369A1 EP 02748715 A EP02748715 A EP 02748715A EP 02748715 A EP02748715 A EP 02748715A EP 1417369 A1 EP1417369 A1 EP 1417369A1
Authority
EP
European Patent Office
Prior art keywords
drum
scooping
phase
speed
rotation
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
EP02748715A
Other languages
German (de)
French (fr)
Other versions
EP1417369B1 (en
Inventor
Detlef Uszkureit
Marianne Röhl
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
Priority to SI200230465T priority Critical patent/SI1417369T1/en
Publication of EP1417369A1 publication Critical patent/EP1417369A1/en
Application granted granted Critical
Publication of EP1417369B1 publication Critical patent/EP1417369B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing 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
    • D06F23/00—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 
    • D06F23/06—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 rotating or oscillating about an inclined axis
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle

Definitions

  • the invention is based on a method for operating a programmable washing machine with a drum rotating in a fixed tub, with an inclined axis of rotation rising in the direction of the loading opening and with scooping devices for the liquor attached to the drum, the scooping capacity of which depends on the direction of rotation of the drum and which in a preferred direction of rotation, the scooping direction, should bring about uniform wetting of the laundry with the lye, during which the drum is operated in alternating directions of rotation and with a rotational speed that changes as a function of the direction of rotation for a limited period of time in the two directions can be varied.
  • washing machines have been operated for a long time, ie. H. the laundry drum rotates with a temporarily changing direction of rotation.
  • a control of the reversing operation is known from DE 43 10 595 A1, with which a high degree of efficiency is achieved when adapted to the specially designed washing machine. Thereafter, provision is made to set the first speed such that the effect of the scooping devices attached to the drum jacket is greatest in the scooping direction. In the opposite direction, the drum is operated at a speed which is increased several times in order to accelerate the exchange of the wash liquor during this period.
  • the choice of speeds is determined depending on the load and on the design features of the washing machine such as drum diameter and scooping capacity of the scooping devices.
  • the length of the time periods for operation in the two directions of rotation can also be varied.
  • Washing machines with an inclined drum axis that rises to the front are also known from the prior art (DE 198 59 571 A1). Combined with A correspondingly adapted housing in the area of the loading opening results in improved visibility into the drum interior and easier access to the laundry for the user.
  • Washing machines with inclined systems also offer the opportunity to save water, energy and detergent, since due to the inclination of the drum, the laundry in the deep area of the inclined drum already comes into contact with lye, even if only small amounts of water have been introduced.
  • a washing machine which has drivers arranged on the drum jacket, which are arranged obliquely to the direction of rotation.
  • the inclined arrangement of the drivers means that the laundry is conveyed forward in a preferred direction of rotation in the direction of the loading opening.
  • the items to be washed are distributed over the entire drum surface, similarly to the horizontally aligned axis of rotation.
  • the drivers are designed as scooping devices and are curved along their extension. In order to be able to absorb as large a quantity of wash liquor as possible, the drivers are particularly large in volume at the lowest point of the drum.
  • the bottom of the drivers is designed wider in the area of the scoop openings, and the bottom tapers in the direction of the loading opening.
  • the ridge height of the driver is higher towards the loading opening than in the area of the scoop openings.
  • the laundry can be moistened quickly and evenly. It is also possible to de to bring the mechanical energy necessary for washing success into the laundry.
  • the invention has for its object to provide a method for operating the washing machine with an inclined drum axis and reversing operation according to the introductory description, in which the advantages of inclined drum systems are fully exploited and at the same time good washing results can be achieved with approximately the same washing duration. Furthermore, it is the aim of the invention to implement the method with the simplest possible control engineering means and to put a comparatively low load on the drive system.
  • this object is achieved in that the drum is operated during the entire wet treatment phase in the scooping direction at time intervals which are approximately of the same length and are characterized by a uniform target speed of the drum, and the speed and the duration of the time intervals in the counter-scooping direction depending on Progress of the wet treatment phase can be varied at which
  • ⁇ is located in a first phase, the power phase, the rotational speed of the drum in scooping direction below the washing speed and the duration of the time interval in counter-scooping direction is substantially shorter than in scooping direction,
  • the washing phase, the rotational speeds of the drum are the same as in the mains phase, but the duration of the time interval in counter-scooping direction extended in comparison with the mains phase, and
  • a third phase the rinsing phase, the speed of the drum in the scooping direction is the same as that in the net and in the washing phase, but in the counter-scooping direction it is significantly higher than a lay-on speed at which the laundry lies against the drum shell, and the The duration of the time interval in the counter-scooping direction is significantly shorter than in the washing phase.
  • wetting phase and the washing phase change several times during the wet treatment phase. This ensures that the laundry is always well flooded during the washing process. This makes dirt removal more effective.
  • the duration of the time interval in the scooping direction automatically via a device for detecting the loading of the drum with laundry. This can be done automatically by the control if there is a corresponding measurement data acquisition.
  • output signals of a timer can advantageously be provided in the program control device for controlling the drum drive, the duration of which can be set as a function of program stages and / or of process parameters measured during the wet treatment phase.
  • the diagram shows the time course of a wet treatment phase, which is divided into three functionally different sections N, W and S.
  • a first section N at the beginning of the wet treatment phase it is important that the laundry, which is generally introduced dry into the drum, is wetted as quickly as possible; therefore this section is called the "mains phase".
  • the reversing rhythm according to the invention takes this task into account by moving the drum in the scooping direction at a speed which depends on the constructive training of the driver designed as a scoop for the scooping performance and thus for the irrigation of the laundry in the drum is optimal.
  • the speed is in any case below the speed that has been found to be optimal for washing.
  • the optimal duration of the time intervals in which the drum rotates in the scooping direction depends on the scooping capacity and the loading of the drum.
  • the rotation in the opposite direction is used in the mesh phase to better mix the laundry in the drum.
  • the rotation time for this can be chosen to be very short.
  • This operation of the washing machine makes it possible to moisten the laundry evenly in a very short time in the mains phase.
  • the washing phase the washing effect is to be increased by intensively flooding the laundry and by absorbing mechanical energy.
  • the invention corresponds to this in a simple manner in that the rotational speeds of the drum are the same as in the network phase, but the duration of the time interval in the counter-scooping direction is extended in comparison to the network phase.
  • the soiled wash liquor in the wash ware should be quickly replaced with fresh wash liquor. This is achieved by optimal turning in the scooping direction and a short change in the opposite direction at high speed.
  • the speed of rotation of the drum in the scooping direction is the same as that in the wetting and washing phase, but in the counter-scooping direction it is significantly above a lay-on speed at which the laundry lies against the drum shell.
  • the duration of the time interval in the counter-scooping direction is significantly shorter than in the washing phase.

Abstract

The washing machine has a drum, which rotates inside a fixed suds container about an axis that rises toward the loading opening. Scooping devices mounted on the drum scoop suds onto the laundry with a scooping power that depends on the direction of rotation of the drum. In the scooping direction, the scooping devices uniformly wet the articles to be washed with the suds. During the wet treatment phase the drum is operated in alternating directions of rotation and with a speed that changes according to the direction of rotation for a respectively limited duration that can be varied in both directions of rotation. During the entire wet treatment phase the drum is driven in the scooping direction with equal time intervals and with uniform setpoint speed. The speed and the duration of the time intervals vary counter to the scooping direction along a wetting phase, a washing phase, and a rinsing phase.

Description

Verfahren zum Betreiben einer programmierbaren Waschmaschine und dafür geeignete WaschmaschineMethod for operating a programmable washing machine and washing machine suitable therefor
Die Erfindung geht aus von einem Verfahren zum Betreiben einer programmierbaren Waschmaschine mit einer in einem feststehenden Laugenbehälter umlaufenden Trommel, mit geneigter, in Richtung zur Beschickungsöffnung ansteigender Drehachse und mit an der Trommel angebrachten Schöpfvorrichtungen für die Lauge, deren Schöpfleistung abhängig ist von der Drehrichtung der Trommel und die in einer bevorzugten Drehrichtung, der Schöpfrichtung, ein gleichmäßiges Benetzen des Waschgutes mit der Lauge bewirken sollen, wobei während der Nassbehandlungsphase die Trommel in wechselnden Drehrichtungen und mit drehrich- tungsabhängig wechselnder Drehgeschwindigkeit für eine jeweils begrenzte Dauer betrieben wird, die in den beiden Richtungen variiert werden kann.The invention is based on a method for operating a programmable washing machine with a drum rotating in a fixed tub, with an inclined axis of rotation rising in the direction of the loading opening and with scooping devices for the liquor attached to the drum, the scooping capacity of which depends on the direction of rotation of the drum and which in a preferred direction of rotation, the scooping direction, should bring about uniform wetting of the laundry with the lye, during which the drum is operated in alternating directions of rotation and with a rotational speed that changes as a function of the direction of rotation for a limited period of time in the two directions can be varied.
Um den Wascherfolg zu verbessern, werden Waschmaschinen seit längerem re- serversierend betrieben, d. h. die Wäschetrommel dreht mit zeitweise wechselnder Drehrichtung.In order to improve the washing success, washing machines have been operated for a long time, ie. H. the laundry drum rotates with a temporarily changing direction of rotation.
Aus der DE 43 10 595 A1 ist eine Steuerung des Reversierbetriebes bekannt, mit der angepasst an die speziell ausgelegte Waschmaschine ein hoher Wirkungsgrad erzielt wird. Danach ist vorgesehen, die erste Drehzahl so einzustellen, dass die Wirkung der am Trommelmantel angebrachten Schöpfeinrichtungen in Schöpfrichtung am größten ist. In Gegenrichtung wird die Trommel mit einer um ein Mehrfaches erhöhten Drehzahl betrieben, um während dieses Zeitabschnittes den Austausch der Waschlauge zu beschleunigen. Die Wahl der Drehzahlen wird in Abhängigkeit von der Beladungsmenge und von den konstruktiven Merkmalen der Waschmaschine wie Trommeldurchmesser und Schöpfleistüng der Schöpfeinrichtungen bestimmt. Auch die Länge der Zeitabschnitte für den Betrieb in den beiden Drehrichtungen kann variiert werden.A control of the reversing operation is known from DE 43 10 595 A1, with which a high degree of efficiency is achieved when adapted to the specially designed washing machine. Thereafter, provision is made to set the first speed such that the effect of the scooping devices attached to the drum jacket is greatest in the scooping direction. In the opposite direction, the drum is operated at a speed which is increased several times in order to accelerate the exchange of the wash liquor during this period. The choice of speeds is determined depending on the load and on the design features of the washing machine such as drum diameter and scooping capacity of the scooping devices. The length of the time periods for operation in the two directions of rotation can also be varied.
Aus dem Stand der Technik sind ferner Waschmaschinen mit geneigter, nach vorn ansteigender Trommelachse bekannt (DE 198 59 571 A1). In Verbindung mit einem entsprechend angepassten Gehäuse im Bereich der Beschickungsöffnung ergibt sich damit für den Nutzer eine verbesserte Einsehbarkeit in das Trommelinnere und ein erleichterter Zugriff zur Wäsche.Washing machines with an inclined drum axis that rises to the front are also known from the prior art (DE 198 59 571 A1). Combined with A correspondingly adapted housing in the area of the loading opening results in improved visibility into the drum interior and easier access to the laundry for the user.
Waschmaschinen mit geneigten Systemen bieten auch die Möglichkeit, Wasser, Energie und Waschmittel einzusparen, da bedingt durch die Neigung der Trommel das Waschgut im tiefen Bereich der geneigten Trommel schon mit Lauge in Berührung kommt, auch wenn nur geringe Wassermengen eingeleiteten wurden.Washing machines with inclined systems also offer the opportunity to save water, energy and detergent, since due to the inclination of the drum, the laundry in the deep area of the inclined drum already comes into contact with lye, even if only small amounts of water have been introduced.
Um diese möglichen Vorteile des geneigten Systems erschließen zu können und gleichzeitig negative Auswirkungen des Systems zu kompensieren, sind spezielle konstruktive Vorrichtungen entwickelt worden.In order to be able to exploit these possible advantages of the inclined system and at the same time to compensate for negative effects of the system, special design devices have been developed.
Bekannt ist eine Waschmaschine, die am Trommelmantel angeordnete Mitnehmer aufweist, die schräg zur Drehrichtung angeordnet sind. Die schräge Anordnung der Mitnehmer bewirkt, dass in einer bevorzugten Drehrichtung die Wäsche nach vorn in Richtung zur Beschickungsöffnung hin befördert wird.A washing machine is known which has drivers arranged on the drum jacket, which are arranged obliquely to the direction of rotation. The inclined arrangement of the drivers means that the laundry is conveyed forward in a preferred direction of rotation in the direction of the loading opening.
Das Waschgut verteilt sich ähnlich wie bei waagerecht ausgerichteter Drehachse über die gesamte Trommelfläche.The items to be washed are distributed over the entire drum surface, similarly to the horizontally aligned axis of rotation.
Die Mitnehmer sind als Schöpfeinrichtungen ausgebildet und entlang ihrer Erstreckung gekrümmt. Um möglichst große Mengen Waschlauge aufnehmen zu können, sind die Mitnehmer am tiefsten Punkt der Trommel besonders großvolumig ausgebildet. Dazu ist der Boden der Mitnehmer im Bereich der Schöpföffnungen breiter ausgelegt, in Richtung zur Beschickungsöffnung verjüngt sich der Boden. Die Firsthöhe des Mitnehmers ist zur Beschickungsöffnung hin höher als im Bereich der Schöpföffnungen. Durch diese Maßnahmen und durch geeignete Anordnung und Verteilung der Öffnungen im Mitnehmer kann die geschöpfte Waschlauge nach der Anhebung des Mitnehmers von einem hohen Niveau herab über die Achslänge gleichmäßig verteilt in das Innere der Trommel auf das Waschgut abregnen. Es ist leicht einsehbar, dass Mitnehmer dieser Art eine Vorzugsdrehrichtung haben, in dem Sinne, dass nur in einer Drehrichtung, der Schöpfrichtung, die Mitnehmer die optimale Schöpfleistung erbringen.The drivers are designed as scooping devices and are curved along their extension. In order to be able to absorb as large a quantity of wash liquor as possible, the drivers are particularly large in volume at the lowest point of the drum. For this purpose, the bottom of the drivers is designed wider in the area of the scoop openings, and the bottom tapers in the direction of the loading opening. The ridge height of the driver is higher towards the loading opening than in the area of the scoop openings. By means of these measures and by a suitable arrangement and distribution of the openings in the driver, the scooped wash liquor after the driver has been raised from a high level down over the axis length can be evenly distributed to the laundry inside the drum. It is easy to see that drivers of this type have a preferred direction of rotation, in the sense that the drivers only provide the optimum scooping performance in one direction of rotation, the scooping direction.
Mit der vorbeschriebenen Waschmaschine ist ein schnelles und gleichmäßiges Durchfeuchten des Waschgutes erzielbar. Es ist auch möglich, eine ausreichen- de, für den Wascherfolg notwendige mechanische Energie in das Waschgut zu bringen.With the washing machine described above, the laundry can be moistened quickly and evenly. It is also possible to de to bring the mechanical energy necessary for washing success into the laundry.
Nachteilig ist, dass solche Mitnehmer für bisher übliche, insbesondere für waagerechte Systeme entwickelte Waschverfahren nicht anwendbar sind, d. h. die oben beschriebene Waschmaschine kann mit bekannten Verfahren nicht so betrieben werden, dass bei gleicher Waschdauer ein vergleichbar guter Wascherfolg erzielbar ist.It is disadvantageous that such carriers cannot be used for washing processes that have been customary up to now, especially developed for horizontal systems, ie. H. the washing machine described above cannot be operated with known methods in such a way that a comparably good washing result can be achieved with the same washing duration.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Betreiben der Waschmaschine mit geneigter Trommelachse und reversierendem Betrieb gemäß einleitender Beschreibung anzugeben, bei dem die Vorteile geneigter Trommelsysteme voll ausgeschöpft werden und gleichzeitig ein guter Wascherfolg bei etwa gleicher Waschdauer erzielbar ist. Weiterhin ist es Ziel der Erfindung, das Verfahren mit möglichst einfachen steuerungstechnischen Mitteln zu realisieren und das Antriebssystem vergleichsweise gering zu belasten.The invention has for its object to provide a method for operating the washing machine with an inclined drum axis and reversing operation according to the introductory description, in which the advantages of inclined drum systems are fully exploited and at the same time good washing results can be achieved with approximately the same washing duration. Furthermore, it is the aim of the invention to implement the method with the simplest possible control engineering means and to put a comparatively low load on the drive system.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass die Trommel während der gesamten Nassbehandlungsphase in Schöpfrichtung in Zeitintervallen betrieben wird, die etwa gleich lang und durch eine einheitliche Solldrehzahl der Tromel gekennzeichnet sind, und die Drehzahl sowie die Dauer der Zeitintervalle in Ge- genschöpfrichtung in Abhängigkeit vom Fortgang der Nassbehandlungsphase variiert werden, bei demAccording to the invention, this object is achieved in that the drum is operated during the entire wet treatment phase in the scooping direction at time intervals which are approximately of the same length and are characterized by a uniform target speed of the drum, and the speed and the duration of the time intervals in the counter-scooping direction depending on Progress of the wet treatment phase can be varied at which
■ in einer ersten Phase, der Netzphase, die Drehzahl der Trommel in Schöpfrichtung unterhalb der Waschdrehzahl liegt und die Dauer des Zeitintervalls in Gegenschöpfrichtung wesentlich kürzer ist als in Schöpfrichtung, ■ is located in a first phase, the power phase, the rotational speed of the drum in scooping direction below the washing speed and the duration of the time interval in counter-scooping direction is substantially shorter than in scooping direction,
■ in einer zweiten Phase, der Waschphase, die Drehzahlen der Trommel gleich sind wie in der Netzphase, die Dauer des Zeitintervalls in Gegenschöpfrichtung aber verlängert ist im Vergleich zur Netzphase, und ■ in a second phase, the washing phase, the rotational speeds of the drum are the same as in the mains phase, but the duration of the time interval in counter-scooping direction extended in comparison with the mains phase, and
■ in einer dritten Phase, der Spülphase, die Drehzahl der Trommel in Schöpfrichtung gleich ist mit derjenigen in der Netz- und in der Waschphase, in Gegenschöpfrichtung aber deutlich über einer Anlegedrehzahl liegt, bei der die Wäsche sich an den Trommelmantel anlegt, und die Dauer des Zeitintervalls in der Gegenschöpfrichtung deutlich kürzer ist als in der Waschphase. ■ in a third phase, the rinsing phase, the speed of the drum in the scooping direction is the same as that in the net and in the washing phase, but in the counter-scooping direction it is significantly higher than a lay-on speed at which the laundry lies against the drum shell, and the The duration of the time interval in the counter-scooping direction is significantly shorter than in the washing phase.
Es ist vorteilhaft, wenn während der Nassbehandlungsphase die Netzphase und die Waschphase mehrfach wechseln. Damit wird erreicht, dass das Waschgut während des Waschprozesses immer gut durchflutet wird. Dadurch wird die Schmutzentfernung effektiver.It is advantageous if the wetting phase and the washing phase change several times during the wet treatment phase. This ensures that the laundry is always well flooded during the washing process. This makes dirt removal more effective.
Mit dem erfindungsgemäßen Verfahren ist bei verringertem Wasser- und Energieverbrauch und etwa unveränderter Waschdauer ein sehr gutes Waschergebnis zu erzielen, das bekannten Verfahren nicht nachsteht. Der Ablauf des Verfahrens ist sehr einfach, der Aufwand für die Steuerung des erfindungsgemäßen Verfahrens ist gering.With the method according to the invention, very good washing results can be achieved with reduced water and energy consumption and roughly unchanged washing duration, which is not inferior to known methods. The procedure is very simple, the effort for controlling the method according to the invention is low.
In Ausgestaltung des erfindungsgemäßen Verfahrens ist es vorteilhaft, die Dauer des Zeitintervalls in Schöpfrichtung über eine Einrichtung zur Erkennung der Beladung der Trommel mit Wäsche automatisch einzustellen. Dies kann bei Vorhandensein einer entsprechenden Meßdatenerfassung durch die Steuerung automatisch erfolgen.In an embodiment of the method according to the invention, it is advantageous to set the duration of the time interval in the scooping direction automatically via a device for detecting the loading of the drum with laundry. This can be done automatically by the control if there is a corresponding measurement data acquisition.
Bei einer Waschmaschine zur Durchführung des erfindungsgemäßen Verfahrens können zur Steuerung des Trommelantriebs vorteilhafterweise Ausgangssignale eines Zeitgebers in der Programmsteuerungseinrichtung vorgesehen sein, deren Zeitdauer in Abhängigkeit von Programmstufen und/oder von während der Nassbehandlungsphase gemessenen Prozessparametern einstellbar ist.In a washing machine for carrying out the method according to the invention, output signals of a timer can advantageously be provided in the program control device for controlling the drum drive, the duration of which can be set as a function of program stages and / or of process parameters measured during the wet treatment phase.
Nachstehend ist das erfindungsgemäße Verfahren anhand eines Drehzahl-Zeit- Diagramms näher erläutert, in dem ein Ausführungsbeispiel für einen erfindungsgemäßen Reversierrhythmus dargestellt ist.The method according to the invention is explained in more detail below on the basis of a speed-time diagram in which an exemplary embodiment of a reversing rhythm according to the invention is shown.
Das Diagramm zeigt den zeitlichen Verlauf einer Nassbehandlungsphase, die in drei funktional unterschiedliche Abschnitte N, W und S unterteilt ist. In einem ersten Abschnitt N zu Beginn der Nassbehandlungsphase kommt es darauf an, dass das in der Regel trocken in die Trommel eingebrachte Waschgut möglichst schnell benetzt wird; daher wird dieser Abschnitt „Netzphase" genannt. Der erfindungsgemäße Reversierrhythmus trägt dieser Aufgabe dadurch Rechnung, das die Trommel in Schöpf richtung mit einer Drehzahl bewegt wird, die abhängig von der konstruktiven Ausbildung der als Schöpfeinrichtung ausgebildeten Mitnehmer für die Schöpfleistung und damit für die Beregnung des Waschgutes in der Trommel optimal ist. Die Drehzahl liegt in jedem Falle unter derjenigen Drehzahl, die zum Waschen als optimal gefunden worden ist.The diagram shows the time course of a wet treatment phase, which is divided into three functionally different sections N, W and S. In a first section N at the beginning of the wet treatment phase, it is important that the laundry, which is generally introduced dry into the drum, is wetted as quickly as possible; therefore this section is called the "mains phase". The reversing rhythm according to the invention takes this task into account by moving the drum in the scooping direction at a speed which depends on the constructive training of the driver designed as a scoop for the scooping performance and thus for the irrigation of the laundry in the drum is optimal. The speed is in any case below the speed that has been found to be optimal for washing.
Die optimale Dauer der Zeitintervalle, in denen sich die Trommel in Schöpfrichtung jeweils dreht, ist abhängig von der Schöpfleistung und von der Beladung der Trommel. Die Drehbewegung in Gegenrichtung dient in der Netzphase dem besseren Durchmischen des Waschgutes in der Trommel. Die Drehdauer hierfür kann sehr kurz gewählt werden.The optimal duration of the time intervals in which the drum rotates in the scooping direction depends on the scooping capacity and the loading of the drum. The rotation in the opposite direction is used in the mesh phase to better mix the laundry in the drum. The rotation time for this can be chosen to be very short.
Durch diesen Betrieb der Waschmaschine ist in der Netzphase ein gleichmäßiges Durchfeuchten des Waschgutes in sehr kurzer Zeit möglich.This operation of the washing machine makes it possible to moisten the laundry evenly in a very short time in the mains phase.
In der zweiten Phase, der Waschphase, soll der Wascheffekt durch intensives Durchfluten des Waschgutes und durch Aufnahme mechanischer Energie gesteigert werden.In the second phase, the washing phase, the washing effect is to be increased by intensively flooding the laundry and by absorbing mechanical energy.
Dem entspricht die Erfindung in einfacher Weise dadurch, dass die Drehzahlen der Trommel gleich sind wie in der Netzphase, die Dauer des Zeitintervalls in Gegenschöpfrichtung aber verlängert ist im Vergleich zur Netzphase.The invention corresponds to this in a simple manner in that the rotational speeds of the drum are the same as in the network phase, but the duration of the time interval in the counter-scooping direction is extended in comparison to the network phase.
In der Spülphase soll die verschmutzte Waschlauge im Waschgut schnell gegen frische Spüllauge ausgetauscht werden. Das wird durch optimales Drehen in Schöpfrichtung und kurzem Wechsel in Gegenrichtung bei hoher Drehzahl erreicht. Dazu ist die Drehzahl der Trommel in Schöpfrichtung gleich mit derjenigen in der Netz- und in der Waschphase, liegt aber in Gegenschöpfrichtung deutlich über einer Anlegedrehzahl, bei der die Wäsche sich an den Trommelmantel anlegt. Außerdem ist die Dauer des Zeitintervalls in der Gegenschöpfrichtung deutlich kürzer als in der Waschphase.During the rinsing phase, the soiled wash liquor in the wash ware should be quickly replaced with fresh wash liquor. This is achieved by optimal turning in the scooping direction and a short change in the opposite direction at high speed. For this purpose, the speed of rotation of the drum in the scooping direction is the same as that in the wetting and washing phase, but in the counter-scooping direction it is significantly above a lay-on speed at which the laundry lies against the drum shell. In addition, the duration of the time interval in the counter-scooping direction is significantly shorter than in the washing phase.
Für die Umsetzung des erfindungsgemäßen Verfahrens werden vorteilhafterweise nur wenige Parameter benötigt, wodurch die Steuerung einfach gestaltet werden kann. Denn zur Steuerung des Trommelantriebs sind nur Ausgangssignale eines Zeitgebers in der Programmsteuerungseinrichtung vorgesehen, deren Zeitdauer in Abhängigkeit von Programmstufen und/oder von während der Nassbehandlungsphase gemessenen Prozessparametern einstellbar ist. Die Belastung des An- triebssystems ist vergleichsweise gering, bedingt durch die relativ gleichmäßige Betriebsweise und durch das Vermeiden extrem hoher Drehzahlen. Only a few parameters are advantageously required for implementing the method according to the invention, as a result of which the control can be designed in a simple manner. Because to control the drum drive, only output signals of a timer are provided in the program control device, the duration of which can be set as a function of program stages and / or of process parameters measured during the wet treatment phase. The burden of the arrival drive system is comparatively low, due to the relatively uniform operation and the avoidance of extremely high speeds.

Claims

Patentansprüche claims
1. Verfahren zum Betreiben einer programmierbaren Waschmaschine mit einer in einem feststehenden Laugenbehälter umlaufenden Trommel, mit geneigter, in Richtung zur Beschickungsöffnung ansteigender Drehachse und mit an der Trommel angebrachten Schöpfvorrichtungen für die Lauge, deren Schöpfleistung abhängig ist von der Drehrichtung der Trommel und die in einer bevorzugten Drehrichtung, der Schöpfrichtung, ein gleichmäßiges Benetzen des Waschgutes mit der Lauge bewirken sollen, wobei während der Nassbehandlungsphase die Trommel in wechselnden Drehrichtungen und mit drehrichtungsabhängig wechselnder Drehgeschwindigkeit für eine jeweils begrenzte Dauer betrieben wird, die in den beiden Richtungen variiert werden kann, dadurch gekennzeichnet, dass die Trommel während der gesamten Nassbehandlungsphase in Schöpfrichtung in Zeitintervallen (IN, IW, IS) betrieben wird, die etwa gleich lang und durch eine einheitliche Solldrehzahl (ΠN, -n , -ns) der Trommel gekennzeichnet sind, und die Drehzahl (-nw, -ns) sowie die Dauer der Zeitintervalle (IN, Isg, Isg) in Gegenschöpfrichtung in Abhängigkeit vom Fortgang der Nassbehandlungsphase variiert werden, bei dem1.Procedure for operating a programmable washing machine with a drum rotating in a fixed tub, with an inclined axis of rotation rising in the direction of the loading opening and with scooping devices for the liquor attached to the drum, the scooping capacity of which depends on the direction of rotation of the drum and in one Preferred direction of rotation, the scooping direction, should cause a uniform wetting of the laundry with the lye, whereby during the wet treatment phase the drum is operated in alternating directions of rotation and with a rotational speed that is dependent on the direction of rotation for a limited period in each case, which can be varied in the two directions that the drum is operated during the entire wet treatment phase in the scooping direction at time intervals (IN, IW, I S ) which are approximately of the same length and are characterized by a uniform set speed (ΠN, -n, -ns) of the drum, and the speed (-nw, -ns) and the duration of the time intervals (IN, Isg, Isg) in the counter-scooping direction are varied depending on the progress of the wet treatment phase, in which
■ in einer ersten Phase, der Netzphase (N), die Drehzahl (Π ) der Trommel in Schöpfrichtung unterhalb der Waschdrehzahl liegt und die Dauer des Zeitintervalls (IN) in Gegenschöpfrichtung wesentlich kürzer ist als in Schöpfrichtung, ■ is located in a first phase, the power stage (N), the speed (Π) of the drum in scooping direction below the washing speed and the duration of the time interval (IN) in counter-scooping direction is substantially shorter than in scooping direction,
■ in einer zweiten Phase, der Waschphase (W), die Drehzahlen (nN, -nw) der Trommel gleich sind wie in der Netzphase (N), die Dauer des Zeitintervalls (lwg) in Gegenschöpfrichtung aber verlängert ist im Vergleich zur Netzphase (N), und ■ in a second phase, the washing phase (W), the speeds (n N , -nw) of the drum are the same as in the mesh phase (N), but the duration of the time interval (lw g ) in the opposite direction is extended compared to the mesh phase (N), and
■ in einer dritten Phase, der Spülphase (S), die Drehzahl (Π ) der Trommel in Schöpfrichtung gleich ist mit derjenigen in der Netz- und in der Waschphase (N, W), in Gegenschöpfrichtung (-ns) aber deutlich über einer Anlegedrehzahl liegt, bei der die Wäsche sich an den Trommelmantel anlegt, und die Dauer des Zeitintervalls (lsg) in der Gegenschöpfrichtung deutlich kürzer ist als in der Waschphase (W). ■ in a third phase, the rinsing phase (S), the speed (Π) of the drum in the scooping direction is the same as that in the wetting and washing phases (N, W), but in the counter-scooping direction (-ns) is clearly above a feed speed at which the laundry lies against the drum jacket and the duration of the time interval (ls g ) in the counter-scooping direction is significantly shorter than in the washing phase (W).
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass während der Nassbehandlungsphase die Schöpf richtung und die Gegenschöpfrichtung mehrfach wechseln.2. The method according to claim 1, characterized in that the scooping direction and the counter-scooping direction change several times during the wet treatment phase.
3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Dauer der Zeitintervalle in Schöpfrichtung und/oder in Gegenschöpfrichtung über eine Einrichtung zur Erkennung der Beladung der Trommel mit Wäsche automatisch eingestellt wird.3. The method according to claim 1, characterized in that the duration of the time intervals in the scooping direction and / or in the counter-scooping direction is automatically set via a device for detecting the loading of the drum with laundry.
4. Waschmaschine zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zur Steuerung des Trommelantriebs Ausgangssignale eines Zeitgebers in der Programmsteuerungseinrichtung vorgesehen sind, deren Zeitdauer in Abhängigkeit von Programmstufen und/oder von während der Nassbehandlungsphase gemessenen Prozessparametern einstellbar ist. 4. Washing machine for performing the method according to one of claims 1 to 3, characterized in that for controlling the drum drive output signals of a timer are provided in the program control device, the duration of which is adjustable depending on program stages and / or on process parameters measured during the wet treatment phase.
EP02748715A 2001-07-26 2002-05-22 Method for operating a programmable washing machine and a washing machine suited therefor Expired - Lifetime EP1417369B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200230465T SI1417369T1 (en) 2001-07-26 2002-05-22 Method for operating a programmable washing machine and a washing machine suited therefor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10136519A DE10136519B4 (en) 2001-07-26 2001-07-26 Method of operating a programmable washing machine and washing machine suitable therefor
DE10136519 2001-07-26
PCT/EP2002/005625 WO2003010380A1 (en) 2001-07-26 2002-05-22 Method for operating a programmable washing machine and a washing machine suited therefor

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EP1417369A1 true EP1417369A1 (en) 2004-05-12
EP1417369B1 EP1417369B1 (en) 2006-10-11

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US (1) US6868573B2 (en)
EP (1) EP1417369B1 (en)
KR (1) KR100802256B1 (en)
CN (1) CN1302169C (en)
AT (1) ATE342393T1 (en)
DE (2) DE10136519B4 (en)
ES (1) ES2274061T3 (en)
WO (1) WO2003010380A1 (en)

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ATE342393T1 (en) 2006-11-15
US20040226107A1 (en) 2004-11-18
KR20040018512A (en) 2004-03-03
DE50208428D1 (en) 2006-11-23
KR100802256B1 (en) 2008-02-11
DE10136519B4 (en) 2004-09-02
CN1302169C (en) 2007-02-28
WO2003010380A1 (en) 2003-02-06
EP1417369B1 (en) 2006-10-11
DE10136519A1 (en) 2003-02-20
ES2274061T3 (en) 2007-05-16
US6868573B2 (en) 2005-03-22
CN1535338A (en) 2004-10-06

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