EP2599426B1 - Lave-vaisselle ménager doté d'un dispositif de séchage par sorption et procédé associé - Google Patents

Lave-vaisselle ménager doté d'un dispositif de séchage par sorption et procédé associé Download PDF

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Publication number
EP2599426B1
EP2599426B1 EP13156887.5A EP13156887A EP2599426B1 EP 2599426 B1 EP2599426 B1 EP 2599426B1 EP 13156887 A EP13156887 A EP 13156887A EP 2599426 B1 EP2599426 B1 EP 2599426B1
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EP
European Patent Office
Prior art keywords
sorption
control unit
additional control
domestic dishwasher
ste
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.)
Active
Application number
EP13156887.5A
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German (de)
English (en)
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EP2599426A1 (fr
Inventor
Andreas Heidel
Bernd KRÄNZLE
Christian Wolf
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.)
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Publication date
Priority claimed from DE102008039888A external-priority patent/DE102008039888B4/de
Priority claimed from DE200810056580 external-priority patent/DE102008056580A1/de
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2599426A1 publication Critical patent/EP2599426A1/fr
Application granted granted Critical
Publication of EP2599426B1 publication Critical patent/EP2599426B1/fr
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/48—Drying arrangements
    • A47L15/481—Drying arrangements by using water absorbent materials, e.g. Zeolith
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0034—Drying phases, including dripping-off phases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/18—Air temperature
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/11—Air heaters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/12—Air blowers

Definitions

  • the invention relates to a domestic dishwasher with a main control device and with at least one Sorptionstrocknungs beautifully.
  • the dishwasher has a control device for operating the dishwasher, including the sorption drying device.
  • the dishwasher has a device electronics and separately a blower control for a drying blower.
  • the invention is based on the object of providing a way in which at least one sorption drying device of a household dishwasher can be operated in a simple manner in a largely functionally reliable manner.
  • This object is achieved in a domestic dishwasher of the type mentioned above in that for specific control of at least one electrical component of the Sorptionstrocknungs worn in addition to the main control device at least one additional control unit is provided, which switches off the Sorptionstrockmuddys observed, in particular their heating device and / or fan unit, if one Critical parameter, in particular mains voltage deviation and / or network frequency deviation of the electrical power supply network, with which the main control device and / or the additional control unit is in operative connection, is exceeded during the respective sorption and / or desorption process.
  • At least one additional control unit is provided in addition to the main control device of the household dishwasher specifically for the Sorptionstrocknungs
  • the specific interaction of the one or more operating parameters of the one or more electrical components of the sorption drying device can be coordinated such that the sorption drying device can be safely operated in a desired, permissible operating range during its respective sorption process and / or desorption process.
  • the functional reliability and / or functionality of the sorption drying device can be maintained in a simple and reliable manner over the desired product overall service life of the domestic dishwasher during the respective sorption process and / or desorption process.
  • the additional control unit may be part of the main control device. This makes it possible to ensure a high building density, so that only little space for the main control device is claimed with the additional control unit in the domestic dishwasher.
  • the additional control unit is designed as a separate functional component and is spatially separated from the main control device.
  • the functional reliability for the additional control unit can be advantageously increased, which for the one or more electrical Components of Sorptionstrocknungs soothe is responsible, if it came to an error in the main control device.
  • the main control device can be decoupled from the additional control unit so that it can continue to perform its assigned operating functions properly, even if the additional control unit fails or has some other malfunction.
  • the additional control unit is housed in a different location in the household dishwasher than the main control device, so can the functional reliability largely ensure both for the main control device and the auxiliary control unit.
  • the additional control unit predefined minimum distance from the sorption drying device in a spatially remote manner.
  • this minimum distance to be maintained, inadmissibly high thermal stresses on the additional control unit, which could occur as a result of the thermal heating of sorption drying material in the sorption container of the sorption drying apparatus by means of at least one heating device, can be largely avoided. Their reliable operation is thus guaranteed.
  • the main control device and / or the auxiliary control unit may be expedient to accommodate the main control device and / or the auxiliary control unit in a base assembly below the bottom of the washing compartment.
  • a protected, in particular moisture or splash-proof, dry receiving area is present, so that impairments or damage to the main control device and / or the additional control unit are largely avoided.
  • the additional control unit is a heating device and / or a fan unit of the sorption drying device for monitoring and / or setting at least one Assigned operating parameters.
  • a functionally reliable operation of the sorption drying device can be largely ensured during the respective sorption process and / or desorption process.
  • the additional control unit allows, in particular, a specific control of the heating device and / or the fan unit of the sorption drying device.
  • the additional control unit for the heating device and / or the fan unit of the sorption drying device has an on / off switch function.
  • thermal overloading of the additional control unit due to the heat development during the respective desorption process can be largely avoided if the additional control unit switches off the heating device and / or the fan unit of the sorption drying device when an error or a disruption or interruption of the communication connection between the main control device and the additional control unit occurs, and / or an upper temperature limit in the washing container and / or in the region of the sorption container is exceeded.
  • the additional control unit is connected to the main control device via at least one control line, in particular a data bus.
  • a control line in particular a data bus.
  • the additional control unit has a "watch-dog” monitoring logic, ie a “dead man monitoring logic", with which the functionality of the control line during the activation of the Sorptionstrockmuddys responded each Sorptionstrockner process and / or desorption process is verifiable.
  • a "watch-dog” monitoring logic can be detected in a simple and reliable manner, whether an error or a fault or even an interruption on the control line and thus the communication link between the main control device and the additional control unit is present.
  • the additional control unit is then advantageously made possible to switch off the one or more components, such as the heating device and / or fan unit, of the sorption drying device.
  • the additional control unit ensures that the heating device of the sorption drying device is switched off when an error situation on the control line has been detected by its "watch-dog" monitoring logic.
  • This reaction of the additional control unit serves, in particular, to provide a thermal protection function for the sorption drying device by electrical means.
  • the additional control unit can therefore be autonomous, ie interrupted regardless of the main control device the heating of the sorbent material during desorption in the event that there is a fault or an error and / or an interruption on the control line. Because in this case it would be the main control device is no longer possible to send by means of a control signal, a shutdown command to the additional control unit via the control line, which would still properly at the additional control unit.
  • the additional control unit provides a simple and reliable protective measure against inadmissibly high heating of the sorption material in the sorption of the sorption drying and / or against overheating their associated heating device ready. In this way, in particular thermal material damage or impermissible material stresses of the sorption material due to impermissibly high temperatures can be avoided. Furthermore, the heating device is protected against inadmissible thermal stresses or damage due to overheating.
  • the "watch dog" monitoring logic of the additional control unit for monitoring the functionality of the control line is switched to active when the heating device of the sorption device is switched on for desorbing its sorption material an upcoming desorption process, if the program flow logic in the main control device intends to initiate a desorption process as the next program flow step, the heating device and possibly the fan unit then being no longer switched on by the additional control electronics.
  • the main control device sends to the "watch-dog" monitoring logic of the additional control unit via the control line a plurality of switch-on commands.
  • the main control device transmits a switch-on command in cyclic repetition in a predetermined interval between pauses.
  • the "watch-dog" monitoring logic of the additional control unit monitors expediently the exceeding of a predetermined cycle time or waiting time since the detection of the respectively sent switch-on command.
  • the "watch-dog" monitoring logic of the additional control unit has a clock or timer unit which defines an upper limit for the waiting time between the receiving clock instants of each of two consecutively transmitted switch-on commands. It can thus easily monitor whether the upper limit for the waiting time has been exceeded without receiving a next switch-on command.
  • the additional control unit switches off at least one electrical component, in particular the heating device and / or possibly the fan unit of the sorption drying device, if it is determined by the "watch-dog" monitoring logic that the upper limit for the waiting time has been exceeded without receiving a next switch-on command ,
  • the watch-dog monitoring logic of the additional control unit for monitoring the functionality of the control line is in particular activated when the heating device of the sorption drying device is switched on to desorb the sorption material thereof.
  • the additional control unit can expediently also switch off the fan unit of the sorption drying device.
  • the additional control unit may be appropriate for the additional control unit to switch off the fan unit of the sorption drying device after the switch-off time of the heating device only after a predefinable overrun time has expired.
  • the fan unit also continues to run for a predefinable period of time after the shut-off time of the heating device, air can be passed through the heating device and / or the sorption material in the sorption container of the sorption drying device. By this continued air flow heat can be removed from the heating device and / or from the sorption, so that Overheating in the region of the heating device and / or the sorption container is largely avoided.
  • This continued operation of the fan unit is particularly advantageous because the sorbent reacts during its heating process during desorbing due to its heat storage capacity and stores heat.
  • the fan unit is therefore expediently further operated beyond the switch-off of the heating device, that sufficient heat energy has been removed from the sorbent material and the sorption due to the continued air flow, so that material damage of the sorbent material, undue stress on the heating device and the other components of the sorption and the Sorption container surrounding components or components of the dishwasher are largely avoided.
  • Due to the continued air circulation by means of the fan unit a cooling of the sorption material in the sorption container and / or the heating device is ensured accelerated. Without the continuation of the fan unit, however, it could lead to a heat accumulation in the sorption, which could lead to unacceptably high temperatures.
  • the main control device can also give the auxiliary control unit a switch-off command to switch off the sorption drying device, in particular its heating device and / fan unit, if a critical limit temperature in the interior of the washing container of the household dishwasher and / or in the region of the sorption container of the sorption drying device is exceeded.
  • a further thermal protection is provided, in particular during the desorption operation of the sorption drying device.
  • the temperature in the interior of the washing container can be determined, for example, by means of at least one temperature sensor, e.g. is attached to one of the side walls of the washing compartment of the dishwasher. In a corresponding manner, the respective temperature in the region of the sorption container can be determined with the aid of at least one temperature sensor.
  • the additional control unit can switch off the sorption drying device, in particular its heating device and / or fan unit, if a critical parameter, in particular Mains voltage deviation and / or mains frequency deviation of the electrical energy supply network, with which the main control device and / or the additional control unit is operatively connected, is exceeded.
  • a critical parameter in particular Mains voltage deviation and / or mains frequency deviation of the electrical energy supply network, with which the main control device and / or the additional control unit is operatively connected.
  • the additional control unit it can be ensured by the additional control unit that an inadmissibly high heating of the sorption material in the sorption of the sorption drying device is largely avoided.
  • the exceeding of a critical limit temperature is prevented, which would lead to a material damage of the sorbent material.
  • the sorption material is heated only gently by means of the heating device. In this way, an irreparable material damage is largely avoided.
  • the invention also relates to a method for controlling the sorption drying device of a household dishwasher, comprising a main control device, which is characterized in that at least one component of the Sorptionstrocknungs beautifully is controlled by at least one additional control unit, which is provided in addition to the main control device.
  • FIGS. 1 4 each provided with the same reference numerals.
  • FIG. 1 shows a schematic representation of a household dishwasher GS as an embodiment of an inventively designed household appliance. It has as main components a rinsing container SPB, a bottom assembly BG arranged underneath, and a sorption drying apparatus STE as an air drying apparatus.
  • the sorption drying device STE is preferably provided externally, ie outside the washing container SPB, partly on a side wall SW and partly in the bottom assembly BG. It comprises as main components at least one air duct LK with at least one fan unit inserted therein or a blower LT and at least one sorption tank SB with sorption drying material ZEO, in particular zeolite or the like.
  • In the washing container SPB are preferably one or more grid baskets GK for receiving and rinsing items such.
  • To spray the items to be cleaned with a Liquid are one or more spraying devices such.
  • both a lower spray arm and an upper spray arm are suspended in the washing container SPB rotating.
  • the liquid used in each case is referred to as a so-called rinsing liquor.
  • the fan unit LT and the sorption SB are here in the embodiment in the bottom assembly BG below the bottom BO of the washing container SPB housed.
  • the air duct LK extends from an outlet opening ALA, which is provided above the bottom BO of the washing container SPB in the side wall SW, outside of this side wall SW with an inlet-side pipe section RA1 down to the fan unit LT in the bottom assembly BG.
  • the output of the fan unit LT is connected to an inlet opening EO of the sorption container SB via an end-side connecting section VA of the air duct LK.
  • the outlet opening ALA of the washing container SPB is above its bottom BO at such a height provided that the penetration of Spülflottentellkeit or cleaner foam in the respective rinsing step or cleaning step is largely avoided.
  • the fan unit is preferably designed as axial fan. It serves for the forced flow of a sorption unit SE in the sorption container SB with moist-hot air LS1 from the rinsing container SPB during the respective drying process.
  • the sorption unit SE contains reversibly dehydrogenatable sorption material ZEO, which can absorb and store moisture from the air LS2 conducted through it.
  • the sorption SB has in the near-ceiling region of its housing on the top of an outflow opening AO, which is connected via an outlet member AU, in particular a Ausströmstutzen, through an insertion opening DG in the bottom BO of the washing compartment SPB with its interior.
  • damp hot air LS1 can be sucked from the interior of the washing container SPB through the outlet opening ALA by means of the switched-in fan unit LT into the air duct LK and via the tubular connecting portion VA between the Fan unit and the sorption are transported into the interior of the sorbent SB for Zwangsbeströmung the reversibly dehydratable sorbent ZEO in sorption SE.
  • the sorption material ZEO of the sorption unit SE extracts liquid droplets, in particular water moisture, from the moist air flowing through, so that air dried after the sorption unit SE can be blown into the interior of the rinsing container SPB via the outlet element or blow-out element AUS. In this way, a closed air circulation system is provided by this sorption drying device STE.
  • At least one air heating device HZ1 for desorption and thus regeneration of the sorption material ZEO is arranged upstream of its sorption unit SE in the flow direction.
  • the air-heating device HZ1 serves for heating air LS1, which is guided by means of the fan unit LT via the air duct LK in the sorption SB and there blown through the sorbent ZEO the sorption SE.
  • This positively heated air LS2 absorbs stored moisture, in particular water, from the sorption material ZEO as it flows through the sorption material ZEO, which has been previously stored in a preceding drying step of an expired dishwashing program.
  • This expelled from the sorbent material ZEO water is transported by the heated air through the outlet element AUS of the sorbent SB in the interior of the washing container SB.
  • This desorption process preferably takes place when the heating or the heating of the rinsing liquid is required at the beginning of a rinsing process, in particular pre-rinsing process, and / or subsequent cleaning process of a subsequent dishwashing program.
  • the air heated for the desorption process by the air heating device HZ1 can simultaneously be used for heating the rinsing liquid in the rinsing tank SPB, for heating its interior walls, and / or the items to be washed in the rinsing tank, which saves energy.
  • the heating of the respective rinsing liquor liquid may possibly be effected by desorption alone with the sorption drying apparatus.
  • the dishwasher GS also has in the bottom BO of their washing container SPB a pump sump PS, which has a screen system.
  • the pump sump PS serves to collect rinsing liquor, which is sprayed by the spray arms SA during the respective rinsing process.
  • the pump sump PS is connected via a line system ZL with the upper and the lower spray arm SA.
  • a circulation pump UP is provided in the connection area of the pump sump PS, which feeds the rinsing liquid from the pump sump PS into the supply lines of the line system ZL.
  • a suction or drain pump LP is connected to the pump sump PS, with which a spent rinsing liquor liquid from the pump sump PS can be partially or completely pumped into a sewer line EL.
  • a water heater DLE or a heat exchanger as additional liquid heating device for Sorptionstrocknungsvortechnisch STE provided.
  • the respective rinsing liquor liquid can be heated additionally or independently to the Desorptionsaufsammlungungsvorgang the Sorptionstocknungs worn.
  • the circulation pump UP and the water heater DLE are each jointly or separately from each other via at least one electrical power supply line SVL5 from a main control unit HE with supplied electrical energy.
  • the electrical power supply line SVL5 comprises at least a first power supply line as a live phase and at least a second power supply line as a neutral.
  • the drain pump LP is connected in a manner analogous to the circulation pump UP via a power supply line SVL6 with the main control device HE.
  • the main control device HE is connected via a connection power supply line SVL1 to the public power supply network EN. It switches the power supply line SVL5 to the water heater DLE and / or the circulation pump UP, if heating or heating of the washing liquor is required for the respective rinsing or cleaning process and switches it off if no heating of the washing liquor is required.
  • the main control device HE switches on the suction or drain pump LP if, in a rinsing or cleaning step by the main control device HE required that a spent rinse liquor liquid from the sump PS is to be pumped partially or completely into the sewer line EL ,
  • an additional control device ZE which serves the control or control and the power supply of the fan unit LT and the air heater HZ1 the Sorptionstrocknungsvorraum STE.
  • the additional control device ZE is connected to the main control device HE via a power supply line SVL2.
  • the additional control device ZE is controlled by the main control device HE via at least one bus line or signal line DB.
  • At least one energy supply line SVL3 is led to the heating device HZ1 of the sorption container SB by the additional control device ZE.
  • it comprises at least a first power supply line as a live phase and at least a second power supply line as a neutral.
  • the additional control device ZE also controls the fan unit LT via a control line SLV4.
  • a power supply line for the fan unit LT can also be integrated in the control line SLV4.
  • the additional control unit ZE is therefore designed here as a separate functional component and arranged spatially separated from the main control device at a distance EF.
  • the functional reliability for the Increase the additional control unit which is responsible for the one or more electrical components of the Sorptionstrocknungs raised if there would be a fault in the main control device.
  • the main control device can be decoupled from the additional control unit so that it can continue to perform its assigned operating functions properly, even if the additional control unit fails or has some other malfunction.
  • the auxiliary control unit is located at a different location in the domestic dishwasher than the main control device. As a result, the functional reliability can be largely ensured both for the main control device and for the additional control unit.
  • the additional control unit ZE is spatially arranged at a predeterminable minimum distance MA from the sorption container SB of the sorption drying device STE.
  • the main control device HE transmits a control signal SS1 to the auxiliary control device ZE via the control line DB in such a way that it switches on the fan unit LT via the control line SLV4, so that moist, hot air is released the rinsing container can be sucked into the air duct LK and fed to the sorption SB for drying.
  • the main control device HE As soon as a desorption process is initiated by the main control device HE, it transmits by means of the control signal SS1 to the additional control device ZE that the heating device HZ1 of the sorption container SB and the fan unit LT are to be switched on by the latter. thereupon the additional control unit ZE switches on these two electrical components HZ1, LT of the sorption drying device STE.
  • the additional control unit ZE has a kind of "dead man monitoring logic” or “watch dog” monitoring logic. This is activated in particular when a desorption process is planned by the program flow logic of the main control device HE or if a desorption process has already been started by it in particular.
  • the main control device HE then transmits a plurality of switch-on commands at defined time intervals or pause times from one another via the control line DB to the additional control unit ZE.
  • the main control device transmits cyclically the same switch-on command P1 at constant time intervals TZ via the signal line DB to the additional control unit ZE.
  • the time t is plotted in seconds (sec) along the abscissa, while the ordinate is assigned the time profile of the control signal SS1.
  • the additional control unit ZE means of their "watch-dog" monitoring logic WD the falling edge of a first, from the main controller HE incoming power-on command P 1.0 . It then turns on the heater HZ1 to start the desorption process desired by the main controller.
  • the main control device HE transmits, at defined, constant time intervals WZ, further switch-on commands P 1,1 , P 1,2 , P 1,3 , .... P 1, k + 1 from one another, ie the successive switch-on commands have, for example their falling edges in each case a time interval or a cycle time WZ as waiting time.
  • the "watch-dog" monitoring logic WD of the additional control unit ZE has for this purpose a clock or timer unit TAE, which has an upper limit TG for the waiting time WZ between the receiving clock times such as tk, tk + 1 each two consecutively sent switching commands such as P 1, k , P 1, k + 1 defines.
  • this upper limit TG for the waiting time TG is I times the cycle time TZ between the cyclically consecutive switch-on commands, where I> 1. If this critical waiting time TG has been exceeded without receipt of a switch-on command, this recognizes or interprets the "watch-dog" monitoring logic WD in the event of a fault and automatically switches off the heating device HZ1 of the sorption drying device STE. By this autarkic automatic shutdown the additional control unit is ensured in any case that the heating device HZ1 is turned off. Because in this interruption or accident on the control line DB it would no longer be possible for the additional control unit ZE to receive a switch-off command from the main control unit HE. In this way, it is reliably avoided that the heating device HZ1 continues to heat until the sorption material ZEO would be brought to inadmissibly high heating temperatures in the sorption container SB.
  • FIG. 3 illustrates, with reference to a flowchart, how the control line DB between the main controller HE and the additional control unit ZE is monitored.
  • the main control device HE transmits a switch-on command via the control line DB to the additional control unit ZE from the switch-on operation, ie from the start step S0 of the respective desorption process, at periodic time intervals WZ.
  • Its "watch-dog" monitoring logic loads a safety timer, ie a timer, in the following step S1 and starts it in the following step S2.
  • the "watch-dog” monitoring logic thus expects the arrival of a switch-on command, such as, for example, P1.0 with P1, k + 1 from the main control device HE at fixed intervals, ie waiting times WZ.
  • step S3 of FIG. 3 carried out.
  • the "watch-dog" monitoring logic WD After expiration of the predetermined waiting time WZ, the "watch-dog" monitoring logic WD checks whether a switch-on command has arrived at the additional control unit ZE or not. If a switch-on command P 1.0 has arrived with P 1, k + 1 , then the "watch-dog” monitoring logic WD loads and starts the time clock WZ again by the timer in steps S1 and S2 as a monitoring loop. On the other hand, if the "watch-dog” monitoring logic determines that no shutdown command has been received after the cycle time WZ has expired, it switches off the security timer in step S4. In the following step S5, it ensures that the heating device HZ1 stops heating the sorption material ZEO. For this purpose, it interrupts the power supply to the heating device HZ1.
  • the additional control unit ZE As soon as the additional control unit ZE has registered a fault on the control line DB with the aid of its "watch-dog" monitoring logic, it switches off the heating device HZ1 at the switch-off time tAH, ie off. Only after expiration of a predefinable delay period NLZ the additional control unit ZE also turns off the fan unit LT. As a result of the fact that the fan unit LT continues to blow through an airflow LS2 through the sorption container SB with the sorption material ZEO even after the shutdown time tAH of the heating device, thermal energy is removed from the sorption container SB into the rinsing container SPB through this air flow rate maintained.
  • the fan unit LT can be switched on by the additional control unit either before the switch-on time tEH for the heating device HZ1 or at the same time or slightly later.
  • the fan unit LT is already in operation at the time tEL before the switch-on time tEH the heater HZ1.
  • the heating device HZ1 would automatically, for safety reasons, be automatically activated by the additional control unit ZE. be switched off without further involvement of the main controller HE.
  • the heating device is switched off after a critical waiting time of a maximum of 180 seconds after no switch-on command has been detected at the given cycle time. This prevents that in case of failure, the heating device remains active and further heating.
  • the additional control electronics already then engages and shuts down the heating device, if there is an error on the control line and is not waited until a critical upper temperature limit is reached, from which it would come to a material damage or unacceptable stress of the sorbent, the sorbent material is largely gentle treated. As a result, its reversibly dehydratable material properties are largely retained over the product life of the dishwasher.
  • At least one electrical temperature protection unit SI can be provided directly on the sorption tank SB for additional safety against thermal overheating as a thermal overheat protection device.
  • This electrical temperature protection unit is inserted in at least one power supply line of the heating device HZ1. It comprises at least one electrical thermal switch and / or a fuse.
  • the electrical temperature protection unit SI interrupts at least one power supply line of the Heating device HZ1. In this way, a double protection for switching off the heating device against thermal overheating of the sorbent material is provided.
  • the additional control unit already switches off the heating device HZ1 when a fault occurs on the control line during a desorption process and is not waited until a critical limit temperature in the sorption tank is exceeded, which would lead to unacceptable stress or even damage to the sorption material, the original reversibly dehydratable material properties of the sorbent material are largely retained. Only then, if the additional control electronics ZE would not turn off the heater in the event of a fault, intervenes as a last resort, the electric temperature protection unit TSI on sorption SB and separates at least one power supply line for the heater HZ1. This electrical temperature protection unit thus forms the second stage of a two-stage thermal protection for the Sorptionstrocknungs gifted TSE.
  • control line DB can also be monitored by the additional control unit during the respective sorption process. In the event of a fault, it switches off only the current fan unit LT since the heating device HZ1 is indeed switched off during sorption.
  • the auxiliary control unit ZE may also monitor a liquid heating device, such as e.g. of the water heater. If there is a communication error, a transmission disturbance or interruption of the signal line from the main control device HE to the additional control device ZE, then the latter in this case switches off this electrical component as well, before thermal damage can occur.
  • a liquid heating device such as e.g. of the water heater.
  • the main control device HE can send a switch-off command to the additional control unit ZE in order to switch off the one or more components of the sorption drying device, in particular its heating device HZ1 and / fan unit LT, if a critical limit temperature in the interior of the washing container SPB of the domestic dishwasher GS and / or in the region of the sorption container SB of the sorption drying device is exceeded.
  • a further thermal protection is provided, in particular during the desorption operation of the sorption drying device STE.
  • the temperature in the interior of the washing container SPB can be determined, for example, by means of at least one temperature sensor, which is attached, for example, to one of the side walls of the washing container SPB of the dishwasher. In the FIG.
  • a temperature sensor on the side wall of the washing container SPB is connected via a measuring line ML to the main control device HE.
  • the respective temperature in the region of the sorption container can be determined with the aid of at least one temperature sensor.
  • the additional control unit can switch off the sorption drying device, in particular its heating device and / or fan unit, if a critical parameter, in particular mains voltage deviation and / or mains frequency deviation of the electrical power supply network with which the main control device and / or the additional control unit is operatively connected, is exceeded.
  • a critical parameter in particular mains voltage deviation and / or mains frequency deviation of the electrical power supply network with which the main control device and / or the additional control unit is operatively connected.
  • the sorption drying device is also protected against any unacceptably high fluctuations of one or more parameters of the electrical energy supply network. In particular, this can e.g. be ensured in the event of an excessively high overvoltage that the heating device is turned off before it gives off too much heating power to the sorbent material of the sorption due to the overvoltage.
  • the additional control unit it can be ensured by the additional control unit that an inadmissibly high heating of the sorption material in the sorption container of the sorption drying apparatus is largely avoided.
  • the exceeding of a critical limit temperature is prevented, which would lead to a material damage of the sorbent material.
  • the sorption material is heated only gently by means of the heating device. In this way, an irreparable material damage is largely avoided.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Claims (18)

  1. Lave-vaisselle (GS) à usage domestique, comprenant un dispositif de commande principal (HE) et comprenant au moins un dispositif de séchage par sorption (STE), caractérisé en ce que pour la commande spécifique au moins d'un composant électrique (HZ1) du dispositif de séchage par sorption (STE), au moins une unité de commande supplémentaire (ZE) est ménagée en plus du dispositif de commande principal (HE), laquelle déconnecte le dispositif de séchage par sorption (STE), notamment le dispositif de chauffage (HZ1) et/ou l'unité de ventilateur (LT) de celui-ci, lorsqu'une caractéristique critique, notamment une déviation de la tension du secteur (ΔU) et/ou une déviation de la fréquence du secteur (Δf) du réseau d'alimentation en énergie électrique (EN), avec laquelle le dispositif de commande principal (HE) et/ou l'unité de commande supplémentaire (ZE) est en liaison active, est dépassée lors de l'opération respective de sorption et/ou de désorption.
  2. Lave-vaisselle à usage domestique selon la revendication 1, caractérisé en ce que l'unité de commande supplémentaire (ZE) fait partie intégrante du dispositif de commande principal (HE).
  3. Lave-vaisselle à usage domestique selon la revendication 1, caractérisé en ce que l'unité de commande supplémentaire (ZE) est réalisée comme composant fonctionnel séparé et est disposée de manière spatialement séparée du dispositif de commande principal (HE), notamment avec une distance spatiale (EF) prédéfinissable.
  4. Lave-vaisselle à usage domestique selon la revendication 3, caractérisé en ce que l'unité de commande supplémentaire (ZE) est disposée à une distance minimale (MA) du dispositif de séchage par sorption (STE).
  5. Lave-vaisselle à usage domestique selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande principal (HE) et/ou l'unité de commande supplémentaire (ZE) sont placés dans un ensemble de fond (BG) en dessous du fond (BO) d'une cuve de lavage (SPB).
  6. Lave-vaisselle à usage domestique selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de séchage par sorption (STE) comprend au moins un réservoir de sorption (SB) doté de matière de sorption (ZEO) réversiblement déshydrogénable.
  7. Lave-vaisselle à usage domestique selon la revendication 6, caractérisé en ce que le dispositif de séchage par sorption (STE) présente au moins une unité de ventilateur (LT) et/ou au moins un dispositif de chauffage (HZ1) attribué au réservoir de sorption (SB) en tant que composant électrique.
  8. Lave-vaisselle à usage domestique selon la revendication 7, caractérisé en ce que l'unité de commande supplémentaire (ZE) du dispositif de chauffage (HZ1) et/ou de l'unité de ventilateur (LT) du dispositif de séchage par sorption (STE) est attribuée à la surveillance et/ou au réglage au moins d'un paramètre de fonctionnement (HL, tD, n).
  9. Lave-vaisselle à usage domestique selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commande supplémentaire (ZE) est reliée au dispositif de commande principal (HE) par l'intermédiaire d'au moins une ligne de commande (DB).
  10. Lave-vaisselle à usage domestique selon la revendication 9, caractérisé en ce que l'unité de commande supplémentaire (ZE) présente une logique de surveillance « watch dog » (WD) pour le contrôle de l'état de fonctionnement de la ligne de commande (DB) pendant l'activation du dispositif de séchage par sorption (STE) lors de l'opération respective de séchage par sorption et/ou de l'opération de désorption.
  11. Lave-vaisselle à usage domestique selon la revendication 10, caractérisé en ce que le dispositif de commande principal (HE) émet de manière consécutive à la logique de surveillance « watch dog » (WD) de l'unité de commande supplémentaire (ZE) une pluralité d'instructions de connexion (P1), notamment au moins une instruction de connexion (P1) répétée cycliquement, par l'intermédiaire de la ligne de commande (DB).
  12. Lave-vaisselle à usage domestique selon la revendication 11, caractérisé en ce que la logique de surveillance « watch dog » (WD) de l'unité de commande supplémentaire (ZE) présente une unité d'horloge ou de synchronisation (TAE) qui détermine une limite supérieure (TG) pour le temps d'attente (WZ) entre les moments de cadence de réception (tk, tk+1) de respectivement deux instructions de connexion (P1, k1 P1, k+1) émises successivement.
  13. Lave-vaisselle à usage domestique selon la revendication 12, caractérisé en ce que la logique de surveillance « watch dog » (WD) de l'unité de commande supplémentaire (ZE) contrôle si la limite supérieure (TG) pour le temps d'attente (WZ) sans réception d'une instruction de connexion suivante (P1, k+1) est dépassée.
  14. Lave-vaisselle à usage domestique selon la revendication 13, caractérisé en ce que l'unité de commande supplémentaire (ZE) déconnecte au moins un composant électrique (HZ1, LT) du dispositif de séchage par sorption (STE) lorsque la logique de surveillance « watch dog » (WD) constate que la limite supérieure (TG) pour le temps d'attente (WZ) sans réception d'une instruction de connexion suivante (P1) est dépassée.
  15. Lave-vaisselle à usage domestique selon au moins l'une quelconque des revendications 10 avec la revendication 14, caractérisé en ce que la logique de surveillance « watch dog » (WD) de l'unité de commande supplémentaire (ZE) est connectée activement pour la surveillance de l'état de fonctionnement de la ligne de commande (DB) lorsque le dispositif de chauffage (HZ1) du dispositif de séchage par sorption (STE) est connecté pour désorber la matière de sorption (ZEO) de ce dernier.
  16. Lave-vaisselle à usage domestique selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commande supplémentaire (ZE), après le moment de déconnexion (tAH) du dispositif de chauffage (HZ1) du dispositif de séchage par sorption (STE), déconnecte l'unité de ventilateur (LT) du dispositif de séchage par sorption (STE) seulement après l'expiration d'un temps de poursuite prédéfinissable (NLZ).
  17. Lave-vaisselle à usage domestique selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commande supplémentaire (ZE) déconnecte le dispositif de séchage par sorption (STE), notamment le dispositif de chauffage (HZ1) et/ou l'unité de ventilateur (LT) de celui-ci, lorsqu'une température limite critique (TK) est dépassée à l'intérieur de la cuve de lavage (SPB) du lave-vaisselle à usage domestique (GS) et/ou dans la zone du réservoir de sorption (SB) du dispositif de séchage par sorption (STE).
  18. Procédé de commande du dispositif de séchage par sorption (STE) d'un lave-vaisselle à usage domestique (GS) selon l'une quelconque des revendications précédentes.
EP13156887.5A 2008-08-27 2009-08-07 Lave-vaisselle ménager doté d'un dispositif de séchage par sorption et procédé associé Active EP2599426B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008039888A DE102008039888B4 (de) 2008-08-27 2008-08-27 Geschirrspülmaschine mit Sorptionstrockenvorrichtung
DE200810056580 DE102008056580A1 (de) 2008-11-10 2008-11-10 Haushalts-Geschirrspülmaschine mit einer Sorptionstrocknungseinrichtung sowie zugehöriges Verfahren
EP09781623.5A EP2317907B1 (fr) 2008-08-27 2009-08-07 Lave-vaisselle électro-ménager comprenant un dispositif de séchage par sorption, et procédé correspondant

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EP09781623.5A Division EP2317907B1 (fr) 2008-08-27 2009-08-07 Lave-vaisselle électro-ménager comprenant un dispositif de séchage par sorption, et procédé correspondant
EP09781623.5 Division 2009-08-07

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EP2599426A1 EP2599426A1 (fr) 2013-06-05
EP2599426B1 true EP2599426B1 (fr) 2015-03-04

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EP13156887.5A Active EP2599426B1 (fr) 2008-08-27 2009-08-07 Lave-vaisselle ménager doté d'un dispositif de séchage par sorption et procédé associé

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EP (2) EP2317907B1 (fr)
JP (1) JP2012500690A (fr)
CN (1) CN102137614B (fr)
AU (1) AU2009286903A1 (fr)
ES (1) ES2437609T3 (fr)
NZ (1) NZ590929A (fr)
PL (1) PL2317907T3 (fr)
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WO2010023088A3 (fr) 2010-09-30
JP2012500690A (ja) 2012-01-12
US20110146718A1 (en) 2011-06-23
US9610003B2 (en) 2017-04-04
ES2437609T3 (es) 2014-01-13
PL2317907T3 (pl) 2014-04-30
NZ590929A (en) 2013-03-28
EP2317907A2 (fr) 2011-05-11
CN102137614B (zh) 2013-10-16
WO2010023088A2 (fr) 2010-03-04
CN102137614A (zh) 2011-07-27
AU2009286903A1 (en) 2010-03-04
EP2317907B1 (fr) 2013-11-20
RU2011109920A (ru) 2012-10-10
EP2599426A1 (fr) 2013-06-05

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