EP0326800B1 - Automatically controlled washing machine - Google Patents
Automatically controlled washing machine Download PDFInfo
- Publication number
- EP0326800B1 EP0326800B1 EP19890100081 EP89100081A EP0326800B1 EP 0326800 B1 EP0326800 B1 EP 0326800B1 EP 19890100081 EP19890100081 EP 19890100081 EP 89100081 A EP89100081 A EP 89100081A EP 0326800 B1 EP0326800 B1 EP 0326800B1
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- EP
- European Patent Office
- Prior art keywords
- program
- temperature
- washing
- temperature sensor
- drive
- 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.)
- Expired - Lifetime
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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
- D06F34/08—Control circuits or arrangements thereof
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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
- D06F2103/16—Washing liquid temperature
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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
- D06F2105/28—Electric heating
Definitions
- the invention is based on an automatically controlled washing machine with a program control device whose program roller, which can be switched in steps of a maximum of 5 minutes, can be separated from the drive by means of a switchable coupling magnet, and with automatically running program sequences for pre-wash and rinse-wash programs for washing hot, colored and easy-care clothes Laundry as well as for a wool washing program and also with a temperature sensor that can be set to a response temperature between the temperature of the unheated fresh water and the boiling temperature of the water, and with an additional response temperature Fixed temperature sensor set below 40 ° C, which can be switched simultaneously with the suds heating device in one recurring program step of each prewash program by a program switch controlled by the program roller.
- Such a washing machine is known from CH patent 406 118.
- the heating period is controlled during a prewash program by means of a fixed temperature sensor adjusted to 45 ° C.
- a separate fixed temperature sensor adjusted to 35 ° C is provided to control the heating up period of a wool washing program (always without pre-washing).
- the invention has for its object that in an automatically controlled washing machine of the type mentioned, a temperature sensor provided specifically for monitoring the alkali temperature can only be dispensed with in the wool washing program.
- this object is achieved in that the fixed temperature sensor can also be switched effectively at the beginning of the wool washing program and, when or when it reaches an approx. 10 to 15 K below the maximum temperature deemed permissible for washing wool, a control signal for releases the coupling magnet, which then couples the program roller again to the drive.
- the existing fixed temperature sensor which already monitors the suds heating in the prewash program, can also be used to monitor the suds heating in the wool washing program. Since it cannot be predetermined (unknown amount of laundry, unknown starting temperature) when the switching temperature will be reached, the switching temperature is designed to be lower than the temperature that is considered the maximum possible washing temperature for wool (depending on the circumstances of the washing machine, e.g. 8 K) or 10 K up to 15 K or up to 18 K below the wool washing temperature).
- the temperature at which the fixed temperature sensor emits the control signal for the coupling magnet has proven to be particularly suitable at 30 ° C. With a stride length of, for example, 5 minutes and a maximum possible loading of the washing machine of a given heat capacity, the temperature of the amount of alkali present is increased by just 10 K within one stride length. The final temperature of 40 ° C is just acceptable for machine washable wool textiles.
- the program roller which is coupled again and moved to the next step, can only be moved from the next step to the next but one step by the drive after a complete step rotation of the drive .
- the next but one step will then be a rinse program heating step, during which the suds heating device can be effectively switched via the adjustable temperature sensor.
- the adjustable temperature sensor can (possibly inadvertently) also be set to a temperature higher than 40 ° C; nevertheless, the subsequent suds heating, which is limited to a maximum of one stride length, will not reach a higher temperature. The wool remains protected in any case.
- the mains voltage is on lines L1 and L2. It can be switched off by switches not shown here. Dashed lines indicate that further switching elements can be arranged in the course of these lines. Otherwise, the circuit arrangement is only to be regarded as schematic, because further switching measures can be taken at points of the line which are not specified in more detail
- the program control unit has a program roller PW which can be uncoupled from the drive motor M by means of a switchable clutch K.
- the coupling between motor M and program roller PW is effective when the coupling magnet KM is switched on.
- the program contacts 2, 13, 14 and 15 are controlled by the program roller PW, they are marked with the same symbol (circle).
- the drive motor M is only energized when one of the two water level sensors S2 or S3 has recognized its associated level and has closed its switch.
- the program switch 2 is switched by the program roller PW to one of its two contacts 22 or 23 after the selection of a program.
- a solenoid valve is also switched on, which enables water to be supplied until one of the two water level sensors mentioned above has switched.
- the program switch 15 closes the circuit for the heating relay R, which, with its two switches R1 and R2, applies voltage to the suds heater H at both poles.
- the KM coupling magnet initially remains de-energized, although the program switches 13 and 14 are also closed and have prepared circuits for the coupling magnet. However, since both the fixed temperature sensor S5 and the adjustable temperature sensor S4 have not yet switched the prepared circuits, the Coupling magnet is not live. The program roller PW therefore stops.
- the adjustable temperature sensor S4 Since the adjustable temperature sensor S4 has a priority here, it can be set to the temperature of the unheated fresh water and then immediately switch the circuit for the coupling magnet KM via the program contact 13. Then both a pre-wash program and the wool wash program with cold lye run. However, if the adjustable temperature sensor S4 is set to a temperature that is the same as or higher than the switching temperature of the fixed temperature sensor S5, e.g. 30 ° C, the fixed temperature sensor switches and switches when the switching temperature is reached due to the alkali temperature therefore the coupling magnet KM via the program contact 14 in voltage. The program roller PW is thus moved out of this temperature stop heating step and set to the next step (the synchronization step). Here, the program switch 15 is open.
- the program roller Depending on the position of the program roller in relation to the current position of the roller drive, the program roller remains for a more or less long time until the driver of the drive detects the coupling point of the roller and continues to rotate. As a result, the roller is synchronized with the drive.
- the roller is moved to the next but one step, which is a rinse program heating step, that is, from the program switches shown, only the program switch 15 closes the circuit for the heating relay R, the switches R1 and R2 of which energize the suds heater H .
- the circuit of the heating relay R there is also the switch of the adjustable temperature sensor S4, which from now on monitors the temperature of the further heated lye. If the alkali temperature within this heating step of the program roller PW reaches the set switching temperature of the temperature sensor S4, then he switches his switch from contact 41 to contact 42 and thus opens the circuit for heating relay R. The other circuit via contact 42 remains ineffective because the program switch 13 is open. After the heating step, the program switch 15 is opened again.
- the alkali temperature reaches the set switching temperature on the temperature sensor S4 during the heating step not, then the alkali heating is ended in a time-limited manner by opening the program switch 15.
- the alkali only warmed up by 10 K anyway, ie from previously 30 ° C to a maximum of 40 ° C. This applies to machine-washable wool as the maximum permissible washing temperature.
- the control circuit for a washing machine according to the invention can also be made such that the synchronization of the program roller with the roller drive takes place only after the time-limited heating step has elapsed.
- the lower setting of the fixed temperature sensor to, for example, 22 ° C or 25 ° C and the synchronization of the program roller with its drive during the heating step, which can then take longer than 5 minutes.
- the time-limited further heating within this heating step then compensates for the alkali temperature after the heating has been switched off by the fixed temperature sensor S5 at, for example, 22 ° C by reheating from at least 8 K to at least 30 ° C to 18 K to a maximum of 40 ° C.
Description
Die Erfindung geht aus von einer automatisch gesteuerten Waschmaschine mit einem Programmsteuergerät, dessen in Schritten von maximal 5 min Dauer weiterschaltbare Programmwalze mittels eines schaltbaren Kuppelmagneten vom Antrieb trennbar ist, und mit automatisch ablaufenden Programmsequenzen für Vor- und Klarwaschprogramme zum Waschen von Kochwäsche, Buntwäsche und pflegeleichter Wäsche sowie für ein Wolle-Waschprogramm und weiterhin mit einem auf eine Ansprechtemperatur zwischen der Temperatur des ungeheizten Frischwassers und der Siedetemperatur des Wassers einstellbaren Temperatur-Sensor sowie mit einem zusätzlichen, auf eine Ansprechtemperatur unterhalb von 40°C fest eingestellten Festtemperatur-Sensor, der in einem immer wiederkehrenden Programmschritt jedes Vorwaschprogramms von einem von der Programmwalze gesteuerten Programmschalter gleichzeitig mit der Laugenheizeinrichtung wirksam schaltbar ist.The invention is based on an automatically controlled washing machine with a program control device whose program roller, which can be switched in steps of a maximum of 5 minutes, can be separated from the drive by means of a switchable coupling magnet, and with automatically running program sequences for pre-wash and rinse-wash programs for washing hot, colored and easy-care clothes Laundry as well as for a wool washing program and also with a temperature sensor that can be set to a response temperature between the temperature of the unheated fresh water and the boiling temperature of the water, and with an additional response temperature Fixed temperature sensor set below 40 ° C, which can be switched simultaneously with the suds heating device in one recurring program step of each prewash program by a program switch controlled by the program roller.
Eine derartige Waschmaschine ist aus der CH-Patentschrift 406 118 bekannt. Darin wird in einer allgemein als Temperatur-Warteschritt bezeichneten Schrittposition der Programmwalze während eines Vorwaschprogramms die Aufheizperiode mittels eines auf 45°C justierten Festtemperatur-Sensors gesteuert. Für die Steuerung der Aufheizperiode eines Wollewaschprogramms (immer ohne Vorwaschen) ist ein eigener, auf 35°C justierter Festtemperatur-Sensor vorgesehen.Such a washing machine is known from CH patent 406 118. In a step position of the program roller, generally referred to as the temperature waiting step, the heating period is controlled during a prewash program by means of a fixed temperature sensor adjusted to 45 ° C. A separate fixed temperature sensor adjusted to 35 ° C is provided to control the heating up period of a wool washing program (always without pre-washing).
Der Erfindung liegt die Aufgabe zugrunde, daß in einer automatisch gesteuerten Waschmaschine der eingangs genannten Art auf einen eigens zur Überwachung der Laugentemperatur nur im Wolle-Waschprogramm vorgesehenen Temperatur-Sensor verzichtet werden kann.The invention has for its object that in an automatically controlled washing machine of the type mentioned, a temperature sensor provided specifically for monitoring the alkali temperature can only be dispensed with in the wool washing program.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Festtemperatur-Sensor auch zu Beginn des Wolle-Waschprogramms wirksam schaltbar ist und bei oder beim Erreichen einer ca. 10 bis 15 K unterhalb der für das Waschen von Wolle als zulässig erachteten Maximal-Temperatur ein Steuersignal für den Kuppelmagneten abgibt, der dann die Programmwalze wieder mit dem Antrieb kuppelt.According to the invention, this object is achieved in that the fixed temperature sensor can also be switched effectively at the beginning of the wool washing program and, when or when it reaches an approx. 10 to 15 K below the maximum temperature deemed permissible for washing wool, a control signal for releases the coupling magnet, which then couples the program roller again to the drive.
In einer erfindungsgemäß ausgestatteten Waschmaschine muß daher für die Überwachung der Laugentemperatur während des Wolle-Waschprogramms kein gesonderter Temperatursensor vorgesehen sein. Durch eine geeignete Schaltung ist nämlich der bereits vorhandene Festtemperatur-Sensor, der schon die Laugenbeheizung im Vorwaschprogramm überwacht, auch zur Überwachung der Laugenheizung im Wolle-Waschprogramm benutzbar. Da nicht vorbestimmt werden kann (unbekannte Wäschemenge, unbekannte Anfangstemperatur), wann die Schalttemperatur erreicht werden wird, legt man die Schalttemperatur geringer aus als die Temperatur, die als maximal mögliche Waschtemperatur für Wolle gilt, (je nach den Gegebenheiten der Waschmaschine, z.B. 8 K oder 10 K bis zu 15 K oder bis zu 18 K unterhalb der Wolle-Waschtemperatur). Hat nämlich der Programmantrieb beim Kuppeln mit der Programmwalze gerade einen Umlauf begonnen, dann kann die Heizung u.U. bis zum Ende des Umlaufs eingeschaltet bleiben, ohne daß die Waschlauge für die Wolle schließlich doch noch zu heiß wird, wenn nunmehr ohne Einfluß durch einen Temperatur-Sensor rein zeitlich begrenzt (maximal 5 min lang = eine Schrittlänge) weitergeheizt wird.
Als besonders geeignet hat sich die Temperatur, bei der der Festtemperatur-Sensor das Steuersignal für den Kuppelmagneten abgibt, zu 30°C erwiesen. Bei einer Schrittlänge von beispielsweise 5 min und einer maximal möglichen Beladung der Waschmaschine einer gegebenen Wärmekapazität wird innerhalb einer Schrittlänge die Temperatur der vorhandenen Laugenmenge gerade um 10 K erhöht. Die Endtemperatur von 40°C gilt für maschinenwaschbare Wolletextilien als gerade noch verträglich.In a washing machine equipped according to the invention, no separate temperature sensor therefore has to be provided for monitoring the alkali temperature during the wool washing program. By means of a suitable circuit, the existing fixed temperature sensor, which already monitors the suds heating in the prewash program, can also be used to monitor the suds heating in the wool washing program. Since it cannot be predetermined (unknown amount of laundry, unknown starting temperature) when the switching temperature will be reached, the switching temperature is designed to be lower than the temperature that is considered the maximum possible washing temperature for wool (depending on the circumstances of the washing machine, e.g. 8 K) or 10 K up to 15 K or up to 18 K below the wool washing temperature). Has the program drive when coupling with the program roller If one cycle has just started, the heating may possibly remain switched on until the end of the cycle, without the washing liquor finally becoming too hot for the wool, if only for a limited time without influence from a temperature sensor (maximum 5 minutes = one step length) is heated further.
The temperature at which the fixed temperature sensor emits the control signal for the coupling magnet has proven to be particularly suitable at 30 ° C. With a stride length of, for example, 5 minutes and a maximum possible loading of the washing machine of a given heat capacity, the temperature of the amount of alkali present is increased by just 10 K within one stride length. The final temperature of 40 ° C is just acceptable for machine washable wool textiles.
Zur Synchronisation der Programmwalze mit dem Programmsteuergeräte-Antrieb ist es besonders vorteilhaft, wenn gemäß einer Weiterbildung der Erfindung die wieder gekuppelte und in den nächsten Schritt bewegte Programmwalze vom Antrieb erst wieder nach einem vollen Schrittumlauf des Antriebs aus diesem nächsten Schritt in den übernächsten Schritt weiterbewegbar ist.To synchronize the program roller with the program control unit drive, it is particularly advantageous if, according to a further development of the invention, the program roller, which is coupled again and moved to the next step, can only be moved from the next step to the next but one step by the drive after a complete step rotation of the drive .
In besonders vorteilhafter Weise wird dann nur der übernächste Schritt ein Klarwaschprogramm-Heizungsschritt sein, während dessen die Laugenheizeinrichtung über den einstellbaren Temperatur-Sensor wirksam schaltbar ist. Hierdurch ist es einerseits möglich, der Bedienungsperson durch die Voreinstellung des einstellbaren Temperatur-Sensors die Wahl zu lassen, die Wolle entweder mit 30°C oder mit 40°C zu waschen. Andererseits ergibt sich der besondere Vorteil, daß der einstellbare Temperatur-Sensor (vielleicht versehentlich) auch auf eine höhere Temperatur als 40°C eingestellt sein kann; dennoch wird die zeitlich auf maximal eine Schrittlänge begrenzte, nachträgliche Laugenheizung keine höhere Temperatur erreichen. Die Wolle bleibt damit in jedem Fall geschützt.In a particularly advantageous manner, only the next but one step will then be a rinse program heating step, during which the suds heating device can be effectively switched via the adjustable temperature sensor. This makes it possible, on the one hand, to give the operator the choice of washing the wool either at 30 ° C. or at 40 ° C. by presetting the adjustable temperature sensor. On the other hand, there is the particular advantage that the adjustable temperature sensor can (possibly inadvertently) also be set to a temperature higher than 40 ° C; nevertheless, the subsequent suds heating, which is limited to a maximum of one stride length, will not reach a higher temperature. The wool remains protected in any case.
Anhand der in der Zeichnung dargestellten Schaltungsanordnung für Teile der elektrischen Ausrüstung einer erfindungsgemäß ausgestatteten Waschmaschine ist die Erfindung nachstehend erläutert.The invention is explained below on the basis of the circuit arrangement for parts of the electrical equipment of a washing machine equipped according to the invention, shown in the drawing.
Die Netzspannung liegt an den Leitungen L1 und L2. Sie kann durch hier nicht dargestellte Schalter abschaltbar sein. Gestrichelte Leitungen deuten an, daß im Zuge dieser Leitungen weitere Schaltelemente angeordnet sein können. Im übrigen ist die Schaltungsanordnung nur als schematisch zu betrachten, weil an nicht näher bestimmten Punkten der Leitung weitere Schaltmaßnahmen getroffen werden könnenThe mains voltage is on lines L1 and L2. It can be switched off by switches not shown here. Dashed lines indicate that further switching elements can be arranged in the course of these lines. Otherwise, the circuit arrangement is only to be regarded as schematic, because further switching measures can be taken at points of the line which are not specified in more detail
Das nicht näher dargestellte Programmsteuergerät hat eine Programmwalze PW, die mittels einer schaltbaren Kupplung K vom Antriebsmotor M entkuppelbar ist. Die Kupplung zwischen Motor M und Programmwalze PW ist bei eingeschaltetem Kuppelmagneten KM wirksam. Zum Zeichen, daß die Programmkontakte 2, 13, 14 und 15 von der Programmwalze PW gesteuert werden, sind diese mit demselben Symbol (Kreis) gekennzeichnet.The program control unit, not shown in more detail, has a program roller PW which can be uncoupled from the drive motor M by means of a switchable clutch K. The coupling between motor M and program roller PW is effective when the coupling magnet KM is switched on. To indicate that the
Der Antriebsmotor M wird erst an Spannung gelegt, wenn einer der beiden Wasserstand-Sensoren S2 oder S3 sein zugehöriges Niveau erkannt und seinen Schalter geschlossen hat. Der Programmschalter 2 wird nach der Wahl eines Programms von der Programmwalze PW auf einen seiner beiden Kontakte 22 oder 23 geschaltet. In einem nicht dargestellten Stromkreis wird außerdem ein Magnetventil eingeschaltet, das den Wasserzulauf ermöglicht, bis einer der beiden vorstehend genannten Wasserstand-Sensoren geschaltet hat.The drive motor M is only energized when one of the two water level sensors S2 or S3 has recognized its associated level and has closed its switch. The
Mit Beginn des Vor- oder Klarwaschprogramms schließt der Programmschalter 15 den Stromkreis für das Heizungsrelais R, das mit seinen beiden Schaltern R1 und R2 die Laugen-Heizung H beidpolig an Spannung legt. Der Kuppelmagnet KM bleibt zunächst spannungslos, obwohl die Programmschalter 13 und 14 die ebenfalls geschlossen sind und Stromkreise für den Kuppelmagneten vorbereitet haben Da aber sowohl der Festtemperatur-Sensor S5 wie auch der einstellbare Temperatur-Sensor S4 die vorbereiteten Stromkreise noch nicht geschaltet haben, kann der Kuppelmagnet nicht an Spannung liegen. Daher bleibt die Programmwalze PW stehen.At the start of the pre-wash or rinse program, the
Da der einstellbare Temperatur-Sensor S4 hier eine Vorrangstellung hat, kann er auf die Temperatur des ungeheizten Frischwassers eingestellt sein und wird dann sofort den Stromkreis für den Kuppelmagneten KM über den Programmkontakt 13 schalten. Dann läuft sowohl ein Vorwaschprogramm als auch das Wolle-Waschprogramm mit kalter Lauge ab. Ist der einstellbare Temperatur-Sensor S4 jedoch auf eine Temperatur eingestellt, die gleich hoch oder höher liegt als die Schalttemperatur des Festtemperatur-Sensors S5, z.B. 30°C, dann schaltet bei Erreichen der Schalttemperatur durch die Laugentemperatur der Festtemperatur-Sensor seinen Schalter und legt daher den Kuppelmagneten KM über den Programmkontakt 14 an Spannung. Somit wird die Programmwalze PW aus diesem Temperatur-Stopp-Heizschritt gefahren und auf den nächsten Schritt (den Synchronisations-Schritt) gesetzt. Hierbei ist der Programm-Schalter 15 geöffnet.Since the adjustable temperature sensor S4 has a priority here, it can be set to the temperature of the unheated fresh water and then immediately switch the circuit for the coupling magnet KM via the
Je nach der Stellung der Programmwalze im Verhältnis zur gerade vorliegenden Stellung des Walzen-Antriebs bleibt die Programmwalze eine mehr oder weniger lange Zeit stehen, bis der Mitnehmer des Antriebs die Kuppelstelle der Walze erfaßt und weiterdreht. Hierdurch ist eine Synchronisation der Walze mit dem Antrieb bewerkstelligt.Depending on the position of the program roller in relation to the current position of the roller drive, the program roller remains for a more or less long time until the driver of the drive detects the coupling point of the roller and continues to rotate. As a result, the roller is synchronized with the drive.
Nach Ablauf des Synchronisationsschritts wird die Walze in den übernächsten Schritt bewegt, der ein Klarwaschprogramm-Heizungsschritt ist, d.h. von den dargestellten Programmschaltern schließt lediglich der Programmschalter 15 den Stromkreis für das Heizungs-Relais R, dessen Schalter R1 und R2 die Laugenheizeinrichtung H an Spannung legen. Im Stromkreis des Heizungs-Relais R liegt außerdem der Schalter des einstellbaren Temperatur-Sensors S4, der von nun an die Temperatur der weitergeheizten Lauge überwacht. Erreicht die Laugentemperatur innerhalb dieses Heizungsschritts der Programmwalze PW die eingestellte Schalttemperatur des Temperatur-Sensors S4, dann legt er seinen Schalter vom Kontakt 41 auf den Kontakt 42 und öffnet damit wieder den Stromkreis für das Heizungs-Relais R. Der andere Stromkreis über den Kontakt 42 bleibt ohne Wirkung, weil der Programmschalter 13 geöffnet ist. Nach Ablauf des Heizungsschritts wird der Programmschalter 15 wieder geöffnet. Erreicht jedoch die Laugentemperatur während des Heizungsschritts die eingestellte Schalttemperatur am Temperatur-Sensor S4 nicht, dann wird die Laugenbeheizung durch Öffnen des Programmschalters 15 in zeitlich begrenzter Weise beendet. Innerhalb der Zeitdauer für diesen Heizungsschritt hat sich rein rechnerisch die Lauge ohnehin nur um 10 K erwärmt, d.h. von zuvor 30°C auf maximal 40°C. Dies gilt für maschinenwaschbare Wolle als maximal zulässige Waschtemperatur.After the synchronization step, the roller is moved to the next but one step, which is a rinse program heating step, that is, from the program switches shown, only the
Abweichend vom dargestellten Beispiel einer Schaltungsanordnung kann die Steuerschaltung für eine erfindungsgemäße Waschmaschine auch derart getroffen sein, daß die Synchronisation der Programmwalze mit dem Walzen-Antrieb erst nach Ablauf des zeitlich begrenzten Heizungsschritts erfolgt. Sofern man jedoch eine weniger große Genauigkeit der Einhaltung der zu erreichenden Waschtemperatur für Wolle hinnehmen kann, d.h., daß man gelegentlich die maximal zulässige Waschtemperatur von 40°C nicht erreicht, dann genügt auch die geringere Einstellung des Festtemperatur-Sensors auf beispielsweise 22°C oder 25°C und die Synchronisation der Programmwalze mit ihrem Antrieb während des Heizungsschrittes, der dann länger dauern kann als 5 min. Das zeitlich begrenzte Weiterheizen innerhalb dieses Heizungsschritts gleicht dann die Laugentemperatur nach Erreichen der Heizungsabschaltung durch den Festtemperatur-Sensor S5 bei beispielsweise 22°C durch ein Nachheizen von mindestens 8 K auf mindestens 30°C bis zu 18 K auf maximal 40°C wieder aus.Deviating from the example of a circuit arrangement shown, the control circuit for a washing machine according to the invention can also be made such that the synchronization of the program roller with the roller drive takes place only after the time-limited heating step has elapsed. However, if one can accept a less high degree of accuracy in maintaining the washing temperature to be achieved for wool, ie that one occasionally does not reach the maximum permissible washing temperature of 40 ° C, then the lower setting of the fixed temperature sensor to, for example, 22 ° C or 25 ° C and the synchronization of the program roller with its drive during the heating step, which can then take longer than 5 minutes. The time-limited further heating within this heating step then compensates for the alkali temperature after the heating has been switched off by the fixed temperature sensor S5 at, for example, 22 ° C by reheating from at least 8 K to at least 30 ° C to 18 K to a maximum of 40 ° C.
Claims (4)
- Automatically controlled washing machine with a program control apparatus, the program cylinder, which is steppable in steps of maximally five minutes duration, of which is separable from the drive by means of a switchable coupling magnet, with automatically running down program sequences for prewashing and clear washing programs for the washing of boil-wash, coloured and easy-care laundry as well as for a wool washing program and further with a temperature sensor settable to a response temperature between the temperature of the unheated fresh water and the boiling temperature of the water as well as with an additional fixed temperature sensor, which is adjusted to a response temperature below 40°C, is switchable to operative simultaneously with the liquor heating equipment in an always recurrent program step of every prewashing program by a program switch controlled by the program cylinder, and separates the program cylinder from the drive for the duration until the attainment of the response temperature, characterised thereby that the fixed temperature sensor (S5) is also switchable to operative at the start of the wool washing program and on the attainment of a temperature of about 10 to about 15 K below the maximum temperature considered permissible for the washing of wool issues a control signal for the coupling magnet (KM), which then recouples the program cylinder (PW) with the drive (M).
- Washing machine according to claim 1, characterised thereby that the temperature at which the fixed temperature sensor (S5) issues the control signal for the coupling magnet (KM) amounts to 30°C.
- Washing machine according to claim 1 or 2, characterised thereby that the recoupled program cylinder (PW), which is moved in the next step, is movable again by the drive (M) only after a full step cycle of the drive from this next step into the next step by one.
- Washing machine according to claim 3, characterised thereby that only the next step but one is a clear washing program heating step, during which the liquor heating equipment (M) is switchable to operative by the settable temperature sensor (S4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3803532A DE3803532A1 (en) | 1988-02-05 | 1988-02-05 | AUTOMATICALLY CONTROLLED WASHING MACHINE |
| DE3803532 | 1988-02-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0326800A2 EP0326800A2 (en) | 1989-08-09 |
| EP0326800A3 EP0326800A3 (en) | 1990-04-04 |
| EP0326800B1 true EP0326800B1 (en) | 1992-10-28 |
Family
ID=6346739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19890100081 Expired - Lifetime EP0326800B1 (en) | 1988-02-05 | 1989-01-04 | Automatically controlled washing machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0326800B1 (en) |
| DE (2) | DE3803532A1 (en) |
| ES (1) | ES2035372T3 (en) |
| TR (1) | TR23760A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2674065B1 (en) * | 1991-03-12 | 1996-09-20 | Ciapem | HOUSEHOLD APPLIANCE WITH PROGRAMMER COMPRISING AN ELECTROMECHANICAL TIME BASE AND AN ELECTRONIC TIME BASE. |
| DE10046042A1 (en) * | 2000-09-18 | 2002-03-28 | Friedhelm Herzog | Wind power plant preferably with vertical drive shaft arranged on installation system used for at least one further purpose e.g.. light mast, aerial mast or observation tower |
| ES2320836B1 (en) * | 2007-06-01 | 2010-01-29 | Ingenieria Para El Desarrollo Sostenible S.L. (Ids, S.L) | PROGRAMMABLE DEVICE OF THERMAL AND TEMPORARY CONTROL OF A MIXED DEFLUIDS. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH383318A (en) * | 1959-04-11 | 1964-10-31 | Joseph Dr Gehrig | Method for heating the washing liquid in a washing machine |
| GB957944A (en) * | 1960-01-15 | 1964-05-13 | English Electric Co Ltd | Improvements in or relating to automatic electric washing machines |
| FR1324741A (en) * | 1961-06-16 | 1963-04-19 | Busch Jaeger Duerener Metall | Program switch-preselector, especially for electric washing machines |
| FR1401243A (en) * | 1963-11-25 | 1965-06-04 | Ad Schulthess & Co A G Maschf | Equipment for controlling an automatic washing machine according to a program |
| DE2730865B2 (en) * | 1977-07-08 | 1980-09-18 | G. Bauknecht Gmbh, 7000 Stuttgart | Process for the program-controlled main wash or main rinse |
-
1988
- 1988-02-05 DE DE3803532A patent/DE3803532A1/en not_active Withdrawn
-
1989
- 1989-01-04 DE DE8989100081T patent/DE58902527D1/en not_active Expired - Lifetime
- 1989-01-04 ES ES198989100081T patent/ES2035372T3/en not_active Expired - Lifetime
- 1989-01-04 EP EP19890100081 patent/EP0326800B1/en not_active Expired - Lifetime
- 1989-01-05 TR TR89/0035A patent/TR23760A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0326800A3 (en) | 1990-04-04 |
| ES2035372T3 (en) | 1993-04-16 |
| TR23760A (en) | 1990-09-12 |
| EP0326800A2 (en) | 1989-08-09 |
| DE58902527D1 (en) | 1992-12-03 |
| DE3803532A1 (en) | 1989-08-17 |
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