EP2474658B1 - Front-loading clothes processing machine, such as a washing machine or washer-drier, with a control device - Google Patents
Front-loading clothes processing machine, such as a washing machine or washer-drier, with a control device Download PDFInfo
- Publication number
- EP2474658B1 EP2474658B1 EP11401003A EP11401003A EP2474658B1 EP 2474658 B1 EP2474658 B1 EP 2474658B1 EP 11401003 A EP11401003 A EP 11401003A EP 11401003 A EP11401003 A EP 11401003A EP 2474658 B1 EP2474658 B1 EP 2474658B1
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- EP
- European Patent Office
- Prior art keywords
- microcontroller
- monitoring
- control
- laundry treatment
- treatment appliance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005406 washing Methods 0.000 title claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 39
- 230000006870 function Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 230000004913 activation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/081—Safety arrangements for preventing water damage
-
- 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
-
- 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
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
-
- 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
-
- 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
- D06F2103/18—Washing liquid level
-
- 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
- D06F2103/24—Spin speed; Drum movements
-
- 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
- D06F2105/08—Draining of washing liquids
-
- 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
- D06F2105/44—Opening, closing or locking of doors
-
- 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
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/12—Casings; Tubs
- D06F39/14—Doors or covers; Securing means therefor
Definitions
- the invention relates to a front-loading water-bearing laundry treatment machine such as washing machine or washer-dryer with mounted in a housing cylindrical tub and a substantially in the tub, horizontally or inclined rotatably mounted and driven by an electric motor drum for receiving the textiles to be treated and one in the front wall and / or the tub arranged loading opening, which is closed by a hinged door, with a locking device for holding the door in its closed position and with an actuator for the locking device for unlocking or opening the door, further comprising a control device with at least one sensor in Active connection is in order to deactivate the locking device as a function of the detected sensor signal.
- a front-loading water-bearing laundry treatment machine such as washing machine or washer-dryer with mounted in a housing cylindrical tub and a substantially in the tub, horizontally or inclined rotatably mounted and driven by an electric motor drum for receiving the textiles to be treated and one in the front wall and / or the tub arranged loading opening, which is closed by a hinged door, with a
- Such a front loadable laundry treatment machine is from the DE 10 2007 037 836 A1 known.
- the known washing machine comprises a control device which is programmed or designed not to release the door of the loading opening to the opening, if too much water in the tub is present or the temperature of the laundry in the tub is too high. This ensures that the door can only be opened if all safety conditions have to be fulfilled so that the door can be opened safely.
- a safe state is assumed by the control device, although this is not present. If the door is then opened, it may cause leakage of water or further damage to the user.
- the invention is therefore based on the object to increase the security of a front loadable laundry treatment machine, such as washing machine, washer-dryer or tumble dryer.
- the publication 10 2005 058 899 A1 is considered to be the closest prior art and also discloses a laundry treating machine according to the preamble of claim 1.
- the control device comprises a control microcontroller for controlling of actuators for carrying out a laundry treatment program and for activating or deactivating the locking device as a function of the detected sensor signals.
- actuators in this case a cold water valve, if necessary, a hot water valve and / or the drain pump for emptying the tub are provided.
- the sensor here is the water level sensor, for example a pressure sensor. As a further sensor, a temperature sensor can be used.
- the control device further comprises a monitoring microcontroller for monitoring the operation of the control microcontroller, which is further configured to activate or deactivate the locking device. This is released by means of another instance, here the monitoring microcontroller, the locking device for opening the door. Errors which lead to a release of the door opening in the control computer are eliminated by the monitoring microcontroller, since the latter is inherently arranged to lock the locking device and prevent the door from being opened, unless all the conditions for opening are fulfilled. Thus, the door can only be opened when the water level falls below a predetermined value, to prevent water from leaking out of the loading opening when the door is opened.
- the monitoring microcontroller is connected by means of the signal lines to the control microcontroller, which serve for the signal connection between control microcontroller and the actuators.
- the output ports of the control microcontroller, to which the actuators are signal-connected are connected to input ports of the monitoring microcontroller.
- the monitoring microcontroller can log the activities or the actuation of the actuators and determine from predetermined conditions stored in a memory whether the door lock can be released for opening or not.
- control device comprises in at least one signal line at least one driver stage, which is arranged between the at least one output port of the control microcontroller and the respective associated actuator.
- the locking device acts electromagnetically and comprises at least one coil, in which the power supply takes place by means of a series connection of switches.
- a first switch is the actuator, a second switch the control microcontroller and a third switch associated with the monitoring microcontroller.
- the series connection of the switches in a simple way causes an AND connection of the enable signals of the two microcontrollers and of the door opening signal from the actuating device. Only when all conditions for opening the door are fulfilled, ie when all switches are closed, the lock for the door is released and the Door can be opened.
- switches electromagnetic switches, such as relays or electronic switches, such as transistors, transistor arrangements or hybrid circuits of electromechanical and electronic switches can be used.
- control of the third switch is designed such that the output signal of the monitoring microcontroller is additionally AND-linked with a further monitoring means, so that an additional release condition is taken into account and the security is increased again.
- the additional monitoring means is designed for detecting the rotation of the drum, such as a speed sensor, wherein the release takes place only when the drum is stopped or falls below a lower limit.
- the monitoring microcontroller is set up to perform a plausibility check on the basis of the supplied signal lines for the actuators, which takes place independently of the program sequence of the control microcontroller.
- the monitoring microcontroller has no data connection to the control microcontroller, so that during the execution of a laundry treatment program quasi parallel to the monitoring microcontroller reads the time activities of the actuators and draw on the basis of stored, predetermined limits conclusions about the amount of water in the tub.
- the monitoring microcontroller with respect to the control microcontroller is different or diversified. This ensures that no errors occur when interconnecting or copying program parts. As a result, it is possible that the monitoring microcontroller and the control microcontroller are each not designed for increased security, the requirement for the increased security being provided due to the diversified selection and programming of the monitoring microcontroller and the control microcontroller.
- the particular advantage of this safety control is that no safety standards have to be proven for the programming of the two microcontrollers, since the safety condition is achieved due to the interconnection of these two microcontrollers.
- the monitoring microcontroller is designed in addition to monitoring the operation of the control microcontroller for at least one further control task.
- no additional microcontroller needs to be implemented if, in any case, an additional microcontroller, for example for a display control, is present and the latter still has free computer capacities.
- the laundry treating machine has a frequency converter for energizing at least one pump motor or drive motor for the drum, it is expedient to provide the monitoring microcontroller in the frequency converter and to use in addition to the control of the frequency for the energization of the drive motor or pump motor in the laundry treatment machine.
- Fig. 1 is a purely schematic representation of a washing machine 1, shown with a tub 2.
- the position and direction information refer to the operational installation position of the washing machine 1.
- a rotatably mounted and driven by an electric motor 13 drum 3 is arranged, which moves the laundry items located in the tub 2 8.
- the drum 3 is made in the present embodiment of stainless steel and provided with a plurality of openings for the flooding.
- the housing 4 has a loading opening 9, via which the interior of the drum 3 can be reached through the sealing sleeve 6.
- the loading opening 9 can be closed by means of a door 5.
- a radiator 7 is arranged, which can heat the washing liquid 19 in the tub 2.
- an inlet valve 15 is sketched, which provides the running in of the water from the supply network.
- the water is passed through the connecting pipe 14 into the tub 2, wherein in the dispenser 11 entered detergent is flushed into the tub 2.
- a drain device 12 is arranged, which brings out the spent washing liquid 19 or the rinse water from the tub 2 to the drain line 12c, which usually opens into a sewer.
- the control device 18 controls the inlet valve 15, the activity of the drainage device 12 or the drainage pump 12 a, the drive motor 13, which is energized via the power section or a frequency converter 16, and the radiator 7.
- Fig. 1 is also shown that the level of the washing liquid 19 is just below the drum 3, so that the water can not flow out of the opening 9.
- a pressure sensor 17b the water level and pressure fluctuations in moving drum 3 is detected.
- the temperature sensor 17 a the water temperature in the tub 2 and With the water meter 17c, the amount of water introduced is detected.
- the intake valve 15 is controlled by the controller 18 in response to these detected values.
- an actuator 20 is provided for the door 5 on the front side, which can be actuated by the user to open the door 5.
- Fig. 2 the front-loading laundry treating machine 1 is shown in a perspective view.
- the loading opening 9 is arranged in the front wall of the housing 4, which is closed by means of a door 5, in the illustrated embodiment, a porthole door.
- the control device 18, 16 is designed to activate or deactivate the locking device 21 in order to release the lock of the door 5, as soon as this door 4 is allowed to be opened or locked, so that the door can not be opened. This usually takes place as a function of the sequence of the set treatment program, for example a wash program, which is likewise controlled and controlled by the control device 18.
- Fig. 3 shows in detail an excerpt of the circuit diagram of the controller 18.
- This includes a control microcontroller 22, which controls the flow of the washing programs. For this purpose, it is connected to an input means 20a, with which the user selects the washing program to be carried out.
- the control microcontroller 22 activates and then starts the selected wash program.
- the pressure sensor 17b and a door sensor 28 act as input to the control microcontroller 22.
- At output ports of the control microcontroller 22 is a signal line 29 for controlling the cold water supply valve 15, another port for the signal line 30 for a hot water supply valve, if present, and a third output port for the signal line 31 is provided for the drain device 12a.
- These actuators are activated temporarily depending on the program, as intended for carrying out the selected washing program.
- Another output port is signal technology with a switch 25 for controlling the coil 21 a for the electromechanical latch of the locking device 21 is provided.
- this switch 24 is at least indirectly connected to a signal line 33, which causes the release of the drive motor 13.
- the switch 27, which is also in series with the aforementioned switches 25 and 24, is switched by the actuator 20.
- the additional switch 26 is in series with the aforementioned switches 25 and 24 and is switched by the monitoring microcontroller 23.
- the series connection results in a logical AND operation of all switches 24, 25, 26, 27, so that the circuit for energizing the coil 21 a is closed only when all switches 24, 25, 26, 27 are closed or all conditions to open the door 5 are met.
- the signal line 26a for the switch 27 comprises an additional input condition, which is provided by a monitoring means 34 for the Movement of the drum 3 is generated.
- the signal lines 29, 30 and 31 are on input ports of the monitoring microcontroller 23, in which a monitoring program runs, which processes the states of these signals with respect to the respective activation period. In this case, a plausibility check is carried out on the basis of the signal states with respect to reference values stored in the memory S. As a result, it can be determined whether all conditions for unlocking the locking device 21 are satisfied or not. For example, if based on the activated signal 31, with which the drain pump 12a is activated, the predetermined time falls below the stored reference value, the monitoring microcontroller 23 denies the switching of the switch 26 and the door 5 remains locked by the locking device.
- the control microcontroller 22 is located in the control device 18 and the monitoring microcontroller 23 in the frequency converter 16.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
Die Erfindung betrifft eine frontbeschickbare wasserführende Wäschebehandlungsmaschine wie Waschmaschine oder Waschtrockner mit in einem Gehäuse angebrachten zylinderförmigen Laugenbehälter und einer in dem Laugenbehälter im Wesentlichen, horizontal oder geneigt drehbar gelagerten und mit einem elektrischen Motor angetriebenen Trommel zur Aufnahme der zu behandelnden Textilien und einer in der Frontwand und/oder dem Laugenbehälter angeordneten Beladungsöffnung, die mittels einer schwenkbaren Tür verschließbar ist, mit einer Verriegelungsvorrichtung zum Halten der Tür in ihrer Verschlussstellung und mit einer Betätigungseinrichtung für die Verriegelungsvorrichtung zum Entriegeln oder Öffnen der Tür, ferner umfassend eine Steuereinrichtung , die mit zumindest einem Sensor in Wirkverbindung steht, um in Abhängigkeit des erfassten Sensorsignals die Verriegelungseinrichtung zu deaktivieren.The invention relates to a front-loading water-bearing laundry treatment machine such as washing machine or washer-dryer with mounted in a housing cylindrical tub and a substantially in the tub, horizontally or inclined rotatably mounted and driven by an electric motor drum for receiving the textiles to be treated and one in the front wall and / or the tub arranged loading opening, which is closed by a hinged door, with a locking device for holding the door in its closed position and with an actuator for the locking device for unlocking or opening the door, further comprising a control device with at least one sensor in Active connection is in order to deactivate the locking device as a function of the detected sensor signal.
Eine derartige frontbeschickbare Wäschebehandlungsmaschine ist aus der
Der Erfindung liegt somit die Aufgabe zugrunde, die Sicherheit bei einer frontbeschickbaren Wäschebehandlungsmaschine, wie Waschmaschine, Waschtrockner oder Wäschetrockner, zu erhöhen.The invention is therefore based on the object to increase the security of a front loadable laundry treatment machine, such as washing machine, washer-dryer or tumble dryer.
Die Druckschrift
Erfindungsgemäß wird die Aufgabe durch eine frontbeschickbare Wäschebehandlungsmaschine mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden abhängigen Ansprüchen.According to the invention, the object is achieved by a front-loading laundry treatment machine having the features of
Der mit der Erfindung erreichbare Vorteil besteht darin, dass auf einfache Weise mit einfachen Mitteln eine erhöhte Sicherheit für die die Betätigung der Türverriegelung und/ oder für die Steuerung der Freigabe und Sperrung der Türverriegelung bereitgestellt wird. Ferner werden auf einfache Weise Normvorschriften, die in einzelnen Ländern national gelten oder geplant sind, erfüllt. Hierzu umfasst die Steuereinrichtung einen Steuerungsmikrocontroller zum Steuern von Aktoren zur Durchführung eines Wäschebehandlungsprogramms und zum Aktivieren oder Deaktivieren der Verriegelungseinrichtung abhängig von den erfassten Sensorsignalen. Als Aktoren sind hierbei ein Kaltwasserventil, bedarfsweise ein Warmwasserventil und/oder die Ablaufpumpe zum Entleeren des Laugenbehälters vorgesehen. Als Sensor ist hierbei der Wasserstandssensor, beispielsweise ein Drucksensor, vorgesehen. Als weiterer Sensor kann auch ein Temperatursensor eingesetzt werden. Die Steuereinrichtung umfasst ferner einen Überwachungsmikrocontroller zur Überwachung des Betriebs des Steuerungsmikrocontrollers, der ferner dazu eingerichtet ist, die Verriegelungsvorrichtung zu aktivieren oder zu deaktivieren. Damit wird mittels einer weiteren Instanz, hier dem Überwachungsmikrocontroller, die Verriegelungseinrichtung zum Öffnen der Tür freigegeben. Fehler, die im Steuerungsrechner zu einer Freigabe der Türöffnung führen, werden durch den Überwachungsmikrocontroller eliminiert, da dieser von sich aus dazu eingerichtet ist, die Verriegelungsvorrichtung zu sperren und das Öffnen der Tür zu verhindern, wenn nicht alle Bedingungen für das Öffnen erfüllt sind. So kann die Tür nur dann geöffnet werden, wenn der Wasserstand einen vorgegebenen Wert unterschreitet, um zu verhindern, dass beim Öffnen der Tür Wasser aus der Beladungsöffnung ausläuft.The achievable with the invention advantage is that in a simple manner with simple means increased security for the operation of the door lock and / or for the control of the release and blocking of the door lock is provided. Furthermore, standard provisions that apply or are planned nationally in individual countries are easily met. For this purpose, the control device comprises a control microcontroller for controlling of actuators for carrying out a laundry treatment program and for activating or deactivating the locking device as a function of the detected sensor signals. As actuators in this case a cold water valve, if necessary, a hot water valve and / or the drain pump for emptying the tub are provided. The sensor here is the water level sensor, for example a pressure sensor. As a further sensor, a temperature sensor can be used. The control device further comprises a monitoring microcontroller for monitoring the operation of the control microcontroller, which is further configured to activate or deactivate the locking device. This is released by means of another instance, here the monitoring microcontroller, the locking device for opening the door. Errors which lead to a release of the door opening in the control computer are eliminated by the monitoring microcontroller, since the latter is inherently arranged to lock the locking device and prevent the door from being opened, unless all the conditions for opening are fulfilled. Thus, the door can only be opened when the water level falls below a predetermined value, to prevent water from leaking out of the loading opening when the door is opened.
In einer zweckmäßigen Ausführungsform ist der Überwachungsmikrocontroller mittels der Signalleitungen mit dem Steuerungsmikrocontroller verbunden, die zur Signalverbindung zwischen Steuerungsmikrocontroller und den Aktoren dienen. Hierbei werden die Ausgangsports des Steuerungsmikrocontrollers, an denen die Aktoren signaltechnisch angeschlossen sind, mit Eingangsports des Überwachungsmikrocontrollers verbunden. Dadurch kann der Überwachungsmikrocontroller die Aktivitäten bzw. die Ansteuerung der Aktoren mit protokollieren und anhand vorgegebener Bedingungen, die in einem Speicher hinterlegt sind, ermitteln, ob die Türverriegelung zum Öffnen freigegeben werden kann oder nicht.In an expedient embodiment, the monitoring microcontroller is connected by means of the signal lines to the control microcontroller, which serve for the signal connection between control microcontroller and the actuators. In this case, the output ports of the control microcontroller, to which the actuators are signal-connected, are connected to input ports of the monitoring microcontroller. As a result, the monitoring microcontroller can log the activities or the actuation of the actuators and determine from predetermined conditions stored in a memory whether the door lock can be released for opening or not.
In dieser Ausführung umfasst die Steuerungseinrichtung in zumindest einer Signalleitung zumindest eine Treiberstufe, die zwischen dem zumindest einen Ausgangsport des Steuerungsmikrocontrollers und dem jeweils zugeordneten Aktor angeordnet ist.In this embodiment, the control device comprises in at least one signal line at least one driver stage, which is arranged between the at least one output port of the control microcontroller and the respective associated actuator.
In einer anderen, vorteilhaften Ausführungsform wirkt die Verriegelungseinrichtung elektromagnetisch und umfasst zumindest eine Spule, bei der die Stromzuführung mittels einer Reihenschaltung von Schaltern erfolgt. Ein erster Schalter ist der Betätigungseinrichtung, ein zweiter Schalter dem Steuerungsmikrocontroller und ein dritter Schalter dem Überwachungsmikrocontroller zugeordnet. Die Reihenschaltung der Schalter bewirkt auf einfach Weise eine UND-Verknüpfung der Freigabesignale der beiden Mikrocontroller und des Türöffnungssignals von der Betätigungseinrichtung. Erst wenn alle Bedingungen für das Öffnen der Tür erfüllt sind, also wenn alle Schalter geschlossen sind, wird die Verriegelung für die Tür aufgehoben und die Tür kann geöffnet werden. Als Schalter können elektromagnetische Schalter, wie Relais oder elektronische Schalter, wie Transitoren, Transistoranordnungen oder Hybridschaltungen aus elektromechanischen und elektronischen Schaltern verwendet werden.In another advantageous embodiment, the locking device acts electromagnetically and comprises at least one coil, in which the power supply takes place by means of a series connection of switches. A first switch is the actuator, a second switch the control microcontroller and a third switch associated with the monitoring microcontroller. The series connection of the switches in a simple way causes an AND connection of the enable signals of the two microcontrollers and of the door opening signal from the actuating device. Only when all conditions for opening the door are fulfilled, ie when all switches are closed, the lock for the door is released and the Door can be opened. As switches, electromagnetic switches, such as relays or electronic switches, such as transistors, transistor arrangements or hybrid circuits of electromechanical and electronic switches can be used.
In einer zweckmäßigen Weiterbildung ist die Ansteuerung des dritten Schalters so ausgeführt, dass das Ausgangssignal des Überwachungsmikrocontrollers zusätzlich mit einem weiteren Überwachungsmittel UND-verknüpft ist, sodass eine zusätzliche Freigabebedingung berücksichtigt und die Sicherheit nochmals erhöht wird. Das zusätzliche Überwachungsmittel ist dabei für die Erfassung der Drehung der Trommel ausgebildet, beispielsweise ein Drehzahlgeber, wobei die Freigabe erst bei Stillstand der Trommel oder beim Unterschreiten eines unteren Grenzwertes erfolgt.In an expedient development, the control of the third switch is designed such that the output signal of the monitoring microcontroller is additionally AND-linked with a further monitoring means, so that an additional release condition is taken into account and the security is increased again. The additional monitoring means is designed for detecting the rotation of the drum, such as a speed sensor, wherein the release takes place only when the drum is stopped or falls below a lower limit.
Insgesamt ist es vorteilhaft, dass der Überwachungsmikrocontroller dazu eingerichtet ist, eine Plausibilitätsprüfung anhand der zugeführten Signalleitungen für die Aktoren durchzuführen, die unabhängig vom Programmablauf des Steuerungsmikrocontrollers erfolgt. Das bedeutet, dass der Überwachungsmikrocontroller keine Datenverbindung zum Steuerungsmikrocontroller hat, sodass während der Durchführung eines Wäschebehandlungsprogramms quasi parallel dazu der Überwachungsmikrocontroller die zeitlichen Aktivitäten der Aktoren mitliest und anhand abgespeicherter, vorgegebener Grenzwerte Rückschlüsse auf die Wassermenge im Laugenbehälter ziehen kann.Overall, it is advantageous that the monitoring microcontroller is set up to perform a plausibility check on the basis of the supplied signal lines for the actuators, which takes place independently of the program sequence of the control microcontroller. This means that the monitoring microcontroller has no data connection to the control microcontroller, so that during the execution of a laundry treatment program quasi parallel to the monitoring microcontroller reads the time activities of the actuators and draw on the basis of stored, predetermined limits conclusions about the amount of water in the tub.
In einer vorteilhaften Weiterbildung ist der Überwachungsmikrocontroller gegenüber dem Steuerungsmikrocontroller unterschiedlich bzw. diversitär ausgebildet. Dadurch ist sichergestellt, dass keine Fehler beim Verschalten oder Kopieren von Programmteilen entstehen. Hierdurch ist es möglich, dass der Überwachungsmikrocontroller und der Steuerungsmikrocontroller jeweils nicht für erhöhte Sicherheit ausgebildet sind, wobei die Anforderung für die erhöhte Sicherheit aufgrund der diversitär Auswahl und Programmierung des Überwachungsmikrocontrollers und des Steuerungsmikrocontroller bereitgestellt wird. Der besondere Vorteil bei dieser Sicherheitssteuerung ist, dass für die Programmierung der beiden Mikrocontroller keinerlei Sicherheitsstandards nachgewiesen werden müssen, da die Sicherheitsbedingung aufgrund der Zusammenschaltung dieser beiden Mikrocontroller erreicht wird.In an advantageous development of the monitoring microcontroller with respect to the control microcontroller is different or diversified. This ensures that no errors occur when interconnecting or copying program parts. As a result, it is possible that the monitoring microcontroller and the control microcontroller are each not designed for increased security, the requirement for the increased security being provided due to the diversified selection and programming of the monitoring microcontroller and the control microcontroller. The particular advantage of this safety control is that no safety standards have to be proven for the programming of the two microcontrollers, since the safety condition is achieved due to the interconnection of these two microcontrollers.
Insgesamt ist es vorteilhaft, dass der Überwachungsmikrocontroller neben der Überwachung des Betriebs des Steuerungsmikrocontrollers für zumindest eine weitere Steuerungsaufgabe ausgebildet ist. Dadurch braucht kein zusätzlicher Mikrocontroller implementiert werden, wenn ohnehin ein zusätzlicher Mikrocontroller, beispielsweise für eine Displaysteuerung, vorhanden ist und dieser noch Rechnerkapazitäten frei hat.Overall, it is advantageous that the monitoring microcontroller is designed in addition to monitoring the operation of the control microcontroller for at least one further control task. As a result, no additional microcontroller needs to be implemented if, in any case, an additional microcontroller, for example for a display control, is present and the latter still has free computer capacities.
Wenn die Wäschebehandlungsmaschine einen Frequenzumrichter für die Bestromung zumindest eines Pumpenmotors oder Antriebsmotors für die Trommel besitzt, ist es zweckmäßig, den Überwachungsmikrocontroller im Frequenzumrichter vorzusehen und zusätzlich zur Steuerung des Frequenzumrichters für die Bestromung des Antriebsmotors oder Pumpenmotors in der Wäschebehandlungsmaschine zu verwenden.If the laundry treating machine has a frequency converter for energizing at least one pump motor or drive motor for the drum, it is expedient to provide the monitoring microcontroller in the frequency converter and to use in addition to the control of the frequency for the energization of the drive motor or pump motor in the laundry treatment machine.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigen
- Fig. 1:
- eine frontbeschickbare Wäschebehandlungsmaschine in einer skizzierten Schnittdarstellung;
- Fig. 2:
- eine frontbeschickbare Wäschebehandlungsmaschine in einer perspektivischen Ansicht und
- Fig. 3:
- eine Detailansicht der Steuerungseinrichtung.
- Fig. 1:
- a front loadable laundry treatment machine in a sketched sectional view;
- Fig. 2:
- a front-loading laundry treating machine in a perspective view and
- 3:
- a detailed view of the control device.
In
In
In
Die Steuerungseinrichtung 18, 16 ist dazu ausgebildet, die Verriegelungsvorrichtung 21 zu aktivieren oder zu deaktivieren, um die Verriegelung der Tür 5 freizugeben, sobald diese 4 geöffnet werden darf oder zu sperren, damit die Tür nicht geöffnet werden kann. Dies geschieht in der Regel in Abhängigkeit vom Ablauf des eingestellten Behandlungsprogramms, beispielsweise eines Waschprogramms, der ebenfalls von der Steuerungseinrichtung 18 gesteuert und kontrolliert wird.The
Claims (11)
- Front-loading, water-conducting laundry treatment appliance (1) such as a washing machine or washer-dryer, comprising a cylindrical suds container (2) which is fixed in a housing, and a drum (3) for receiving the textiles to be treated, which drum is rotatably mounted in the suds container (2) in a substantially horizontal or inclined manner and is driven by an electric motor (13), and a loading opening (9) which is arranged in the front wall of the housing (4) and/or the suds container (2) and which can be closed by means of a pivotable door (5), comprising a locking device (21) for holding the door (5) in the closed position thereof and comprising an actuating means (20) for the locking device (21) for unlocking or opening the door (5), further comprising a control means (18), which is operatively connected to at least one sensor (17a, 17b, 17c) in order to deactivate the locking means (21) depending on the detected sensor signal, characterised in that the control means (18) comprises a control microcontroller (22) for controlling actuators (15, 12a) for carrying out a laundry treatment program and for activating or deactivating the locking means (21) depending on the detected sensor signals, and a monitoring microcontroller (23) for monitoring the operation of the control microcontroller (22), which is further set up to activate or deactivate the locking means (21).
- Front-loading laundry treatment appliance (1) according to claim 1, characterised in that the monitoring microcontroller (23) is connected to the control microcontroller (22) by means of the signal lines (29, 30, 31), which are used for the signal connection between the control microcontroller (22) and the actuators (15, 12a).
- Front-loading laundry treatment appliance (1) according to claim 2, characterised by at least one driver stage (32) between an at least one output port of the control microcontroller (22) and each assigned actuator (15, 12a).
- Front-loading laundry treatment appliance (1) according to either claim 1 or claim 2, characterised in that the locking means (21) operates electromagnetically and comprises at least one coil (21 a), the current being supplied to the coil by means of a series connection of switches (24, 25, 26, 27), a first switch (27) being assigned to the actuating means, a second switch being assigned to the control microcontroller (25) and a third switch (26) being assigned to the monitoring microcontroller (23).
- Front-loading laundry treatment appliance (1) according to claim 4, characterised in that the third switch (26) can be activated by an output signal (26a) of the monitoring microcontroller (23), and in that the output signal (26a) is additionally ANDed to a further monitoring means (34).
- Front-loading laundry treatment appliance (1) according to claim 5, characterised in that the monitoring means (34) are configured for detecting the rotation of the drum (3).
- Front-loading laundry treatment appliance (1) according to any of claims 1 to 5, characterised in that the monitoring microcontroller (23) is set up to carry out a plausibility check for the actuators (15, 12a) on the basis of the signal lines (29, 30, 31) which are fed in, which check is performed independently of the program sequence of the control microcontroller (22).
- Front-loading laundry treatment appliance (1) according to any of claims 1 to 6, characterised in that the monitoring microcontroller (23) is configured differently or diversely in comparison with the control microcontroller (22).
- Front-loading laundry treatment appliance (1) according to claim 7, characterised in that both the monitoring microcontroller (23) and the control microcontroller (22) are not configured for increased security, a request for increased security being provided on the basis of the diverse selection and programming of the monitoring microcontroller (23) and the control microcontroller (22).
- Front-loading laundry treatment appliance (1) according to claim 1, characterised in that the monitoring microcontroller (23) is configured for at least one further control task in addition to monitoring the operation of the control microcontroller (22).
- Front-loading laundry treatment appliance (1) according to claim 9, characterised in that the monitoring microcontroller (23) additionally functions as a control computer for a frequency convertor (16) for energising a drive motor (13) in the laundry treatment appliance (1).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11401003A EP2474658B1 (en) | 2011-01-06 | 2011-01-06 | Front-loading clothes processing machine, such as a washing machine or washer-drier, with a control device |
ES11401003T ES2402822T3 (en) | 2011-01-06 | 2011-01-06 | Machine for the treatment of front-loading laundry, such as a washing machine or clothes dryer, with control equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11401003A EP2474658B1 (en) | 2011-01-06 | 2011-01-06 | Front-loading clothes processing machine, such as a washing machine or washer-drier, with a control device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2474658A1 EP2474658A1 (en) | 2012-07-11 |
EP2474658B1 true EP2474658B1 (en) | 2013-03-20 |
Family
ID=44069906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11401003A Active EP2474658B1 (en) | 2011-01-06 | 2011-01-06 | Front-loading clothes processing machine, such as a washing machine or washer-drier, with a control device |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2474658B1 (en) |
ES (1) | ES2402822T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104805631B (en) * | 2015-05-12 | 2017-03-01 | 康红宾 | The roller washing machine of quick detachable inner core |
CN109898297A (en) * | 2017-12-08 | 2019-06-18 | 博西华电器(江苏)有限公司 | Clothing care machine |
CN117661226A (en) * | 2022-08-30 | 2024-03-08 | 青岛海尔洗衣机有限公司 | Control method and device for clothes treatment of washing machine, washing machine and storage medium |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070182255A1 (en) * | 2004-04-01 | 2007-08-09 | Schneiderheinze Martin D K | Safety switching module |
DE102005058899A1 (en) * | 2005-12-09 | 2007-06-14 | BSH Bosch und Siemens Hausgeräte GmbH | Circuit arrangement for locking and / or unlocking a door lock, in particular in an electrical domestic appliance |
DE102006013312B3 (en) * | 2006-03-21 | 2007-05-31 | Miele & Cie. Kg | Fluid guiding household device e.g. dishwasher, has one circuit with microprocessor, with which proper function of other circuit is recognized based on data sent from one circuit to other circuit and is actuated based on one of valves |
KR101250549B1 (en) * | 2006-08-14 | 2013-04-03 | 엘지전자 주식회사 | Control method of door open for a laundry treatment machine |
-
2011
- 2011-01-06 EP EP11401003A patent/EP2474658B1/en active Active
- 2011-01-06 ES ES11401003T patent/ES2402822T3/en active Active
Also Published As
Publication number | Publication date |
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EP2474658A1 (en) | 2012-07-11 |
ES2402822T3 (en) | 2013-05-09 |
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