EP1682822B1 - Filling and /or charge monitoring method in a cooking device and cooking device with filling and/or charge monitoring - Google Patents

Filling and /or charge monitoring method in a cooking device and cooking device with filling and/or charge monitoring Download PDF

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Publication number
EP1682822B1
EP1682822B1 EP04818377A EP04818377A EP1682822B1 EP 1682822 B1 EP1682822 B1 EP 1682822B1 EP 04818377 A EP04818377 A EP 04818377A EP 04818377 A EP04818377 A EP 04818377A EP 1682822 B1 EP1682822 B1 EP 1682822B1
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European Patent Office
Prior art keywords
operative connection
fluid
shut
pumping
cooking
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EP04818377A
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German (de)
French (fr)
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EP1682822A1 (en
Inventor
Manfred Breunig
Bruno Maas
Roland Hegmann
Rudolf König
Ralph Macenka
Klaus Altenburger
Judith Imgram
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Rational AG
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Rational AG
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Priority claimed from DE102004012824A external-priority patent/DE102004012824B4/en
Application filed by Rational AG filed Critical Rational AG
Priority to EP07002781A priority Critical patent/EP1813870A3/en
Publication of EP1682822A1 publication Critical patent/EP1682822A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid

Definitions

  • the invention relates to a filling and / or Bimengenschreibungs vide for at least one reservoir for at least temporarily recording at least one fluid in a cooking appliance with an inner box comprising a cooking chamber with at least one fluid inlet and at least one fluid outlet, a blower device comprising at least one fan in the inner box at least one drive shaft for the fan wheel and at least one motor for the drive shaft, for circulating at least part of the fluid at least in the inner box and a control or regulating device in operative connection with the blower device and / or a filling and / or Medmengenschreibwachungs worn; and a cooking appliance having an inner box, comprising a cooking chamber with at least one fluid inlet and at least one fluid outlet, a blower device comprising at least one fan wheel in the inner box, at least one drive shaft for the fan and at least one motor for the drive shaft for circulating at least a part of at least one Fluids at least in the inner box, at least one reservoir for at least temporarily recording at least the fluid with at least one fluid in
  • Such cooking appliances are well known in the art, see for example WO 02/068876 A1.
  • a method and a device for cleaning a cooking appliance with the supply of fresh water are known, which in particular from the kettle of a steam generator, whether by overfilling the kettle, Divert at least once, even boiled water or condensation of vapors, in a wash liquor reservoir can be filled, possibly simultaneously with at least one detergent.
  • the wash liquor is then circulated for cleaning, namely from the wash liquor reservoir, which is preferably formed by a steam condenser, in particular provided in the form of a Ablöschkastens, to the suction of a fan, through the cooking chamber and a cooking chamber back into the wash liquor reservoir.
  • the circulation and composition of the wash liquor can be controlled and / or regulated.
  • a level electrode in the water kettle is used to realize a filling and / or filling quantity monitoring device.
  • DE 197 30 610 C1 discloses a cleaning method for a cooking appliance by means of a cleaning liquid, which is filled in an outwardly sealed inner box of the cooking appliance to such a level that the bottom of the inner box is at least completely covered, so it serves as a reservoir for the cleaning liquid , The cleaning liquid is then circulated with a circulation device such that the inner surfaces of the inner box are at least partially rinsed with cleaning liquid. To detect the filling level of the inner box while a level electrode is provided.
  • Level electrodes have the disadvantage that they easily become dirty when used in cooking appliances and thus prone to failure.
  • such level electrodes additionally represent components for which an extra space is needed and for which costs are incurred.
  • liquid flow meters such as pulse counters and the like, are used in cooking appliances, see for example DE 199 12 444 C2. Liquid flowmeters are also prone to failure, require space and are expensive.
  • Object of the present invention is to develop the generic method and cooking device such that the disadvantages of the prior art are overcome.
  • the object relating to the method is achieved according to the invention in that at least one characteristic variable of the blower device that changes due to the force effect of the quantity impinging on the fan wheel is evaluated by the filling and / or filling quantity monitoring device.
  • the speed, the speed fluctuation, the power consumption, the power consumption fluctuation, the current consumption and / or the current consumption fluctuation of the blower device is detected at least temporarily as a characteristic variable for filling and / or filling quantity monitoring.
  • At least a part of the fluid is circulated at least in the inner box via at least one pumping device, wherein the pumping device is preferably clocked.
  • the pumping device is turned on, at a time t 1, a decrease in the speed of the fan wheel is detected due to the impinging on the fan impeller on the fluid, preferably this speed reduction then from the motor at least for Part is compensated by increasing power consumption, at a time t 2, the pumping device is turned off, at a time t 3, an increase in speed, in particular due to said compensation of the engine is detected, and from the time difference t 3-t 1, the filling and / or quantities and / or a change of the same is or will be determined.
  • an upper limit of the speed and / or a lower limit of the speed is determined or, preferably, depending on the timing of the pumping device, the interior space supplied amount of the fluid discharged from the interior Amount of the fluid, the dimensioning of the Cooking appliance, the equipment of the cooking appliance and / or the loading of the interior with food.
  • a time difference is determined from the period between a falling below the lower limit and exceeding the upper limit, preferably in response to the timing of the pumping device, for filling and / or Medmengenüberwachung.
  • At least one device for supplying the fluid into the inner box and / or at least one device for removing fluid from the inner box is set, preferably controlled or regulated, or . become.
  • the object of the invention relating to the cooking device is achieved in that the filling and / or filling quantity monitoring device is in operative connection with the blower device for detecting at least one variable characteristic of the quantity of fluid impinging on the fan wheel.
  • the motor preferably in the form of an electrically commutated motor, is in operative connection with the control or regulating device.
  • Preferred cooking appliances of the invention comprise at least one pumping device for circulating at least a portion of the fluid at least in the inner box, preferably in operative connection with the control or regulating device for adjusting the pumping capacity and / or the timing of the pumping device.
  • the invention proposes that the characteristic variable can be determined by evaluating the rotational speed, the rotational speed fluctuation, the power consumption, the power consumption fluctuation, the current consumption and / or the current consumption fluctuation.
  • the timing of the pumping device can be taken into account when determining the characteristic variable, preferably the time interval between a first speed reduction after switching on the pumping device and a first Speed increase after switching off the pump device, in particular during a clock, can be evaluated.
  • the fluid comprises water in liquid and / or vapor form and / or wash liquor.
  • the reservoir is provided in the inner box, an extinguishing box and / or a boiler of a steam generator.
  • the inner box can be filled via a first fluid inlet in operative connection with the extinguishing box, a second fluid inlet in operative connection with the water boiler and / or a third fluid inlet in operative connection with a water pipe.
  • the invention also proposes that the quenching box can be filled via a fourth fluid inlet in operative connection with the inner box, a fifth fluid inlet in operative connection with the water boiler and / or a sixth fluid inlet in operative connection with a water conduit.
  • the invention provides that the water boiler can be filled via a seventh fluid inlet in operative connection with the inner box, an eighth fluid inlet in operative connection with the extinguishing box and / or a ninth fluid inlet in operative connection with a water pipe.
  • the inner box can be emptied via a first fluid outlet in operative connection with the quenching box, a second fluid outlet in operative connection with the kettle and / or a third fluid outlet in operative connection with a water outlet.
  • the quenching box can be emptied via a fourth fluid outlet in operative connection with the inner box, a fifth fluid outlet in operative connection with the kettle and / or a sixth fluid outlet in operative connection with a water outlet.
  • Embodiments of the invention may be characterized in that the kettle is emptied via a seventh fluid outlet in operative connection with the inner box, an eighth fluid outlet operatively connected to the quenching box, and / or a ninth fluid outlet in operative communication with a water drain.
  • the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and / or eighteenth shut-off device comprise or comprise at least one valve .
  • the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and / or eighteenth shut-off device and / or pumping means via the control or regulating device is or are operable, in particular depending in each case on a comparison of the actual value of the characteristic size with at least one desired value for the characteristic size.
  • the filling and / or filling quantity monitoring device at least partially comprises the blower device and the control and / or regulating device, wherein the filling and / or filling quantity monitoring device preferably also the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, and / or eighteenth obturator and / or pumping means.
  • the invention is therefore based on the surprising finding that by evaluating, for example, speed fluctuations of a fan wheel in a cooking appliance, be it in terms of amplitudes, frequencies, phases or time intervals relative to one another, in the case in which a fan wheel and optionally a pumping device
  • a wash liquor is circulated in an inner box of the cooking appliance, which is pumped out of a quenching box into the inner box and flows out of the inner box back into the quenching box, thus sufficiently accurate statements about the filling state or the filling amount of Waschflottenumisselznikonnes can be made that the fan is slowed down by impinging wash liquor, so there is a load change, which is reflected among other things in speed fluctuations.
  • the power consumption or power consumption during load changes can be evaluated by impinging on the fan wash liquor according to the invention, especially in the form of the evaluation of deviations from a target value, with small deviations, the circulating amount of wash liquor low and large deviations, the circulating amount of wash liquor is large.
  • a time difference as a measure of a filling and / or filling quantities and / or a change thereof, which is determined from the period between a falling below a lower limit and an upper limit of the speed of the Fan wheel within a pumping cycle.
  • the time difference t 3 - t 1 is a characteristic size of the fan in a cooking appliance according to the invention, which can be used to evaluate a filling and / or filling quantity.
  • This time difference is also independent of variable installations in the cooking appliance, such as in the form of different accessories, or from a different loading of the cooking appliance.
  • the invention thus takes into account, for the first time, that the fluid circulation, in particular when cleaning in a cooking appliance, is decisive for a satisfactory cleaning result, and the filling, ie the filling state or the filling quantity, of the circulation circuit with fluid over the consequences of the impingement of the fan wheel with fluid Control of Fluidumcielznikankonnes is to determine.
  • the data to be evaluated in a cooking appliance according to the invention for the purpose of monitoring a filling or a filling quantity, for example speed fluctuations, can, of course, be further processed for the purpose of evaluation, in particular subjected to filtering.
  • the invention provides to perform a target / actual value comparison in a control and / or regulating device in order to regulate depending on the result of said comparison in particular a fresh water supply, for example in the Ablöschkasten by opening a valve to a water pipe.
  • a cooking appliance 1 comprises an inner box 2, in which a fan 3 is arranged.
  • the fan 3 is connected via a drive shaft 4 with a motor 5.
  • the motor 5 is in turn connected to a control device 8 both via a control line 6 and a measuring line 7.
  • the inner box 2 is connected via a drain line 9 with a quenching box 10, which in turn is connected to the inner box 2 via an outlet member 13 with the interposition of a pump 11 and a wash liquor line 12.
  • the extinguishing box 10 can be filled via a quenching nozzle 14 with fresh water from a water pipe 15 with the valve 16 open, the valve 16 communicating via a control line 17 with the control device 8 via a measuring line 18.
  • the fresh water is part of a fluid 19, which is circulated in the cooking appliance 1 in particular during a cleaning process using the pump 11, which is also connected via a control line 20 and a measuring line 21 to the control device 8.
  • the fluid is referred to as wash liquor 19.
  • washing liquor 19 from the circulation circuit of the cooking appliance 1, in particular via the Ablöschkasten 10, with the interposition of a valve (not shown) are disposed of.
  • the water pipe 15 and the drain 24 may be part of a domestic water network.
  • the valve 21 is connected both via a measuring line 22 and a control line 23 to the control device 8.
  • the cooking appliance 1 just described in the construction can operate as follows for monitoring the filling and the filling quantity of the quenching box 10 according to an embodiment of the method according to the invention:
  • the initially empty quenching box 10 is filled with fresh water via the quenching nozzle 14.
  • the introduced into the quenching box 10 fresh water is immediately promoted via the pump 11 to the outlet member 13 to impinge on the fan 3 from there.
  • the pump 11 operates in an adjustable clock ratio, such as 10 seconds on and 5 seconds off.
  • the clock ratio can be changed optionally via the control device 8.
  • the valve 16 is only then closed by the control device 8, when a comparison of a first target value for the load of the impeller 3 due to a deceleration by the incident thereon wash liquor 19, which corresponds to a desired amount of Ummélznikonnes the wash liquor 19 with the above the measuring line 7 detected actual value of the load pickup coincides. Then the filling monitoring is completed. Following is a Brownmengenauerwachung of circulated from the inner box 2 in the quenching box 10 and back into the inner box wash liquor 19, so the Fluidumisselznikonnes, by evaluating the variance of the speed, ie the speed fluctuations, more precisely, the height of the speed fluctuations of the fan 3 instead. The height of the fluctuations allows to make statements about the circulation rate in the cooking appliance according to the invention.
  • valve 16 is opened until the optimum filling is present.
  • wash liquor 19 may be required in different purification steps, so that different target values are present, with which a comparison is carried out in the course of the cleaning process.
  • the pump 11 is turned on. As soon as a decrease in the rotational speed, in particular in the form of a falling below a first target value, is observed, the time t 1 is recorded. If this reduction of the rotational speed is then compensated on the basis of an increasing power consumption of the motor 5, then the point in time must be noted at which an increase of the rotational speed, in particular in the form of an exceeding of a second desired value, can be observed after switching off the pump 11 at the time t 2 is, this time is to call t 3 . The difference t 3 -t 1 then provides a measure of the filling quantity, wherein for a desired filling quantity a third setpoint value or else a setpoint value range is present.
  • the difference t 3 -t 1 falls below this third setpoint value, then there is a lack of wash liquor 19.
  • This lack of wash liquor 19 is possible for example by introducing more fresh water by controlling the valve 16 of the Ablöschdüse 14 via the control device 8.
  • the valve 16 for the quenching nozzle 14 can be actuated via the control device 8, for example.

Description

Die Erfindung betrifft ein Befüllungs- und/oder Füllmengenüberwachungsverfahren für zumindest ein Reservoir zum zumindest zeitweisen Aufnehmen zumindest eines Fluids in einem Gargerät mit einem Innenkasten, umfassend einen Garraum mit zumindest einem Fluideingang und zumindest einem Fluidausgang, einer Gebläseeinrichtung, umfassend zumindest ein Lüfterrad in dem Innenkasten, zumindest eine Antriebswelle für das Lüfterrad und zumindest einen Motor für die Antriebswelle, zum Zirkulieren zumindest eines Teils des Fluids zumindest in dem Innenkasten und einer Steuer- oder Regeleinrichtung in Wirkverbindung mit der Gebläseeinrichtung und/oder einer Befüllungs- und/oder Füllmengenüberwachungseinrichtung; und ein Gargerät mit einem Innenkasten, umfassend einen Garraum mit zumindest einem Fluideingang und zumindest einem Fluidausgang, einer Gebläseeinrichtung, umfassend zumindest ein Lüfterrad in dem Innenkasten, zumindest eine Antriebswelle für das Lüfterrad und zumindest einen Motor für die Antriebswelle zum Zirkulieren zumindest eines Teils zumindest eines Fluids zumindest in dem Innenkasten, zumindest einem Reservoir zum zumindest zeitweisen Aufnehmen zumindest des Fluids mit zumindest einem Fluideingang und zumindest einem Fluidausgang, einer Befüllungs- und/oder Füllmengenüberwachungseinrichtung für das Reservoir und einer Steuer- oder Regeleinrichtung in Wirkverbindung mit der Gebläseeinrichtung und/oder der Befüllungs- und/oder Füllmengenüberwachungseinrichtung.The invention relates to a filling and / or Füllmengenüberwachungsverfahren for at least one reservoir for at least temporarily recording at least one fluid in a cooking appliance with an inner box comprising a cooking chamber with at least one fluid inlet and at least one fluid outlet, a blower device comprising at least one fan in the inner box at least one drive shaft for the fan wheel and at least one motor for the drive shaft, for circulating at least part of the fluid at least in the inner box and a control or regulating device in operative connection with the blower device and / or a filling and / or Füllmengenüberwachungseinrichtung; and a cooking appliance having an inner box, comprising a cooking chamber with at least one fluid inlet and at least one fluid outlet, a blower device comprising at least one fan wheel in the inner box, at least one drive shaft for the fan and at least one motor for the drive shaft for circulating at least a part of at least one Fluids at least in the inner box, at least one reservoir for at least temporarily recording at least the fluid with at least one fluid inlet and at least one fluid outlet, a filling and / or Füllmengenüberwachungseinrichtung for the reservoir and a control or regulating device in operative connection with the blower device and / or the Filling and / or filling quantity monitoring device.

Solche Gargeräte sind aus dem Stand der Technik gut bekannt, siehe beispielsweise die WO 02/068876 A1. Aus dieser Druckschrift sind ein Verfahren und eine Vorrichtung zum Reinigen eines Gargerätes unter Zuführung von Frischwasser bekannt, welches insbesondere aus dem Wasserkessel eines Dampfgenerators, sei es durch Überfüllen des Wasserkessels, Abzweigen von mindestens einmal erhitzen, selbst gekochten Wasser oder Auskondensieren von Dämpfen, in ein Waschflottenreservoir einfüllbar ist, eventuell gleichzeitig mit zumindest einem Reinigungsmittel. Die Waschflotte wird anschließend zum Reinigen zirkuliert, nämlich von dem Waschflottenreservoir, das vorzugsweise durch einen Dampfkondensierer, insbesondere bereitgestellt in Form eines Ablöschkastens, gebildet wird, zur Ansaugseite eines Lüfterrads, durch den Garraum und einen Garraumablauf zurück in das Waschflottenreservoir. Dabei können die Zirkulierung und Zusammensetzung der Waschflotte, einschließlich Zeitdauer, Temperatur, Durchflussrate und dergleichen gesteuert und/oder geregelt werden. Bei dem aus der WO 02/068876 A1 bekannten Gargerät kommt eine Füllstandselektrode im Wasserkessel als Realisation einer Befüllungs- und/oder Füllmengenüberwachungseinrichtung zum Einsatz.Such cooking appliances are well known in the art, see for example WO 02/068876 A1. From this document a method and a device for cleaning a cooking appliance with the supply of fresh water are known, which in particular from the kettle of a steam generator, whether by overfilling the kettle, Divert at least once, even boiled water or condensation of vapors, in a wash liquor reservoir can be filled, possibly simultaneously with at least one detergent. The wash liquor is then circulated for cleaning, namely from the wash liquor reservoir, which is preferably formed by a steam condenser, in particular provided in the form of a Ablöschkastens, to the suction of a fan, through the cooking chamber and a cooking chamber back into the wash liquor reservoir. In this case, the circulation and composition of the wash liquor, including duration, temperature, flow rate and the like can be controlled and / or regulated. In the cooking appliance known from WO 02/068876 A1, a level electrode in the water kettle is used to realize a filling and / or filling quantity monitoring device.

Die DE 197 30 610 C1 offenbart ein Reinigungsverfahren für ein Gargerät mittels einer Reinigungsflüssigkeit, die in einen nach außen abgedichteten Innenkasten des Gargeräts bis zu einer solchen Füllhöhe eingefüllt wird, dass der Boden des Innenkastens zumindest vollständig bedeckt ist, also als Reservoir für die Reinigungsflüssigkeit dient. Die Reinigungsflüssigkeit wird anschließend mit einer Umwälzeinrichtung derart umgewälzt, dass die Innenflächen des Innenkastens zumindest teilweise mit Reinigungsflüssigkeit bespült werden. Zur Erfassung der Füllhöhe des Innenkastens ist dabei eine Füllstandselektrode vorgesehen.DE 197 30 610 C1 discloses a cleaning method for a cooking appliance by means of a cleaning liquid, which is filled in an outwardly sealed inner box of the cooking appliance to such a level that the bottom of the inner box is at least completely covered, so it serves as a reservoir for the cleaning liquid , The cleaning liquid is then circulated with a circulation device such that the inner surfaces of the inner box are at least partially rinsed with cleaning liquid. To detect the filling level of the inner box while a level electrode is provided.

Füllstandselektroden weisen den Nachteil auf, dass sie beim Einsatz in Gargeräten leicht verschmutzen und dadurch störanfällig werden. Zudem stellen solche Füllstandselektroden zusätzlich Bauteile dar, für die ein extra Bauraum von Nöten ist und für die Kosten entstehen.Level electrodes have the disadvantage that they easily become dirty when used in cooking appliances and thus prone to failure. In addition, such level electrodes additionally represent components for which an extra space is needed and for which costs are incurred.

Als Alternative zu Füllstandselektroden kommen bei Gargeräten auch Flüssigkeitsdurchflussmesser, wie in Form von Impulszählern und dergleichen, zum Einsatz, siehe beispielsweise die DE 199 12 444 C2. Flüssigkeitsdurchflussmesser sind ebenfalls störanfällig, benötigen Bauraum und sind kostenaufwendig.As an alternative to level electrodes, liquid flow meters, such as pulse counters and the like, are used in cooking appliances, see for example DE 199 12 444 C2. Liquid flowmeters are also prone to failure, require space and are expensive.

Es sind beispielsweise aus der DE 25 55 052 A1 Geschirrspülmaschinen, die auf einem gänzlich anderen technischen Gebiet als Gargeräte liegen, bekannt, bei denen eine Steuereinrichtung für eine programmgesteuerte Wasserzufuhr vorgesehen ist, wobei der Zulauf von Frischwasser in Abhängigkeit vom Motorstrom einer Umwälzpumpe gesteuert wird.There are, for example from DE 25 55 052 A1 dishwashers, which are in a completely different technical field than cooking appliances, known in which a control device for a program-controlled water supply is provided, wherein the feed of fresh water is controlled in dependence on the motor current of a circulating pump.

Für Waschmaschinen, die sich genauso wie Geschirrspülmaschinen grundsätzlich von Gargeräten unterscheiden, ist es bekannt, den Programmablauf in Abhängigkeit der Drehzahl der Wäschetrommel zu regeln, siehe beispielsweise DE 41 17 292 C2.For washing machines, which basically differ from cooking appliances as well as dishwashers, it is known to regulate the program sequence as a function of the speed of the laundry drum, see, for example, DE 41 17 292 C2.

Aufgabe der vorliegenden Erfindung ist es, das gattungsgemäße Verfahren sowie Gargerät derart weiterzuentwickeln, dass die Nachteile des Stands der Technik überwunden werden.Object of the present invention is to develop the generic method and cooking device such that the disadvantages of the prior art are overcome.

Die das Verfahren betreffende Aufgabe wird erfindungsgemäß dadurch gelöst, dass zumindest eine sich auf Grund der Krafteinwirkung der auf das Lüfterrad auftreffenden Menge an dem Fluid ändernde charakteristische Größe der Gebläseeinrichtung von der Befüllungs- und/oder Füllmengenüberwachungseinrichtung ausgewertet wird.The object relating to the method is achieved according to the invention in that at least one characteristic variable of the blower device that changes due to the force effect of the quantity impinging on the fan wheel is evaluated by the filling and / or filling quantity monitoring device.

Dabei kann vorgesehen sein, dass zur Befüllungs- und/oder Füllmengenüberwachung die Drehzahl, die Drehzahlschwankung, die Leistungsaufnahme, die Leistungsaufnahmeschwankung, die Stromaufnahme und/oder die Stromaufnahmeschwankung der Gebläseeinrichtung zumindest zeitweise als charakteristische Größe erfasst wird bzw. werden.It may be provided that the speed, the speed fluctuation, the power consumption, the power consumption fluctuation, the current consumption and / or the current consumption fluctuation of the blower device is detected at least temporarily as a characteristic variable for filling and / or filling quantity monitoring.

Erfindungsgemäß bevorzugt ist, dass zumindest ein Teil des Fluids zumindest in dem Innenkasten über zumindest eine Pumpeinrichtung umgewälzt wird, wobei die Pumpeinrichtung vorzugsweise getaktet wird.According to the invention it is preferred that at least a part of the fluid is circulated at least in the inner box via at least one pumping device, wherein the pumping device is preferably clocked.

Dabei kann vorgesehen sein, dass zu einem Zeitpunkt t 0 die Pumpeinrichtung eingeschaltet wird, zu einem Zeitpunkt t1 eine Erniedrigung der Drehzahl des Lüfterrades aufgrund der auf das Lüfterrad auftreffenden Menge an dem Fluid erfasst wird, wobei vorzugsweise diese Drehzahlerniedrigung anschließend von dem Motor zumindest zum Teil durch steigende Leistungsaufnahme kompensiert wird, zu einem Zeitpunkt t2 die Pumpeinrichtung ausgeschaltet wird, zu einem Zeitpunkt t3 eine Erhöhung der Drehzahl, insbesondere aufgrund besagter Kompensation des Motors, erfasst wird, und aus der Zeitdifferenz t 3-t1 die Befüllungs- und/oder Füllmengen und/oder eine Änderung derselben bestimmt wird bzw. werden.It can be provided that at a time t 0, the pumping device is turned on, at a time t 1, a decrease in the speed of the fan wheel is detected due to the impinging on the fan impeller on the fluid, preferably this speed reduction then from the motor at least for Part is compensated by increasing power consumption, at a time t 2, the pumping device is turned off, at a time t 3, an increase in speed, in particular due to said compensation of the engine is detected, and from the time difference t 3-t 1, the filling and / or quantities and / or a change of the same is or will be determined.

Ferner wird mit der Erfindung vorgeschlagen, dass ein oberer Grenzwert der Drehzahl und/oder ein unterer Grenzwert der Drehzahl bestimmt wird bzw. werden, vorzugsweise in Abhängigkeit von der Taktung der Pumpeinrichtung, der dem Innenraum zugeführten Menge an dem Fluid, der aus dem Innenraum abgeführten Menge an dem Fluid, der Bemassung des Gargerätes, der Bestückung des Gargerätes und/oder der Beschickung des Innenraums mit Gargut.Further, it is proposed with the invention that an upper limit of the speed and / or a lower limit of the speed is determined or, preferably, depending on the timing of the pumping device, the interior space supplied amount of the fluid discharged from the interior Amount of the fluid, the dimensioning of the Cooking appliance, the equipment of the cooking appliance and / or the loading of the interior with food.

Dabei kann vorgesehen sein, dass eine Zeitdifferenz bestimmt wird aus der Zeitspanne zwischen einem Unterschreiten des unteren Grenzwertes und einem Überschreiten des oberen Grenzwertes, vorzugsweise in Abhängigkeit von der Taktung der Pumpeinrichtung, zur Befüllungs- und/oder Füllmengenüberwachung.It can be provided that a time difference is determined from the period between a falling below the lower limit and exceeding the upper limit, preferably in response to the timing of the pumping device, for filling and / or Füllmengenüberwachung.

Ferner kann erfindungsgemäß vorgesehen sein, dass in Abhängigkeit von einer erfassten Befüllungs- und/oder Füllmenge zumindest eine Einrichtung zum Zuführen des Fluids in den Innenkasten und/oder zumindest eine Einrichtung zum Abführen von Fluid aus dem Innenkasten eingestellt, vorzugsweise gesteuert oder geregelt, wird bzw. werden.Furthermore, according to the invention, it can be provided that, depending on a detected filling and / or filling quantity, at least one device for supplying the fluid into the inner box and / or at least one device for removing fluid from the inner box is set, preferably controlled or regulated, or . become.

Die das Gargerät betreffende Aufgabe der Erfindung wird dadurch gelöst, dass die Befüllungs- und/oder Füllmengenüberwachungseinrichtung mit der Gebläseeinrichtung zur Erfassung zumindest einer für die auf das Lüfterrad auftreffende Menge an Fluid charakteristischen Größe in Wirkverbindung steht.The object of the invention relating to the cooking device is achieved in that the filling and / or filling quantity monitoring device is in operative connection with the blower device for detecting at least one variable characteristic of the quantity of fluid impinging on the fan wheel.

Dabei kann vorgesehen sein, dass der Motor, vorzugsweise in Form eines elektrisch kommutierten Motors, in Wirkverbindung mit der Steuer- oder Regeleinrichtung steht.It can be provided that the motor, preferably in the form of an electrically commutated motor, is in operative connection with the control or regulating device.

Bevorzugte Gargeräte der Erfindung umfassen zumindest eine Pumpeinrichtung zum Umwälzen zumindest eines Teils des Fluids zumindest in dem Innenkasten, vorzugsweise in Wirkverbindung mit der Steuer- oder Regeleinrichtung zum Einstellen der Pumpleistung und/oder der Taktung der Pumpeinrichtung.Preferred cooking appliances of the invention comprise at least one pumping device for circulating at least a portion of the fluid at least in the inner box, preferably in operative connection with the control or regulating device for adjusting the pumping capacity and / or the timing of the pumping device.

Mit der Erfindung wird vorgeschlagen, dass die charakteristische Größe durch Auswertung der Drehzahl, der Drehzahlschwankung, der Leistungsaufnahme, der Leistungsaufnahmeschwankung, der Stromaufnahme und/oder der Stromaufnahmeschwankung bestimmbar ist.The invention proposes that the characteristic variable can be determined by evaluating the rotational speed, the rotational speed fluctuation, the power consumption, the power consumption fluctuation, the current consumption and / or the current consumption fluctuation.

Bevorzugt ist erfindungsgemäß, dass bei der Bestimmung der charakteristischen Größe die Taktung der Pumpeinrichtung berücksichtigbar ist, vorzugsweise die Zeitspanne zwischen einer ersten Drehzahlerniedrigung nach Einschalten der Pumpeinrichtung und einen ersten Drehzahlerhöhung nach Ausschalten der Pumpeinrichtung, insbesondere während eines Taktes, auswertbar ist.According to the invention, it is preferred that the timing of the pumping device can be taken into account when determining the characteristic variable, preferably the time interval between a first speed reduction after switching on the pumping device and a first Speed increase after switching off the pump device, in particular during a clock, can be evaluated.

Ferner wird mit der Erfindung vorgeschlagen, dass das Fluid Wasser in flüssiger und/oder Dampfform und/oder Waschflotte umfasst.Furthermore, it is proposed with the invention that the fluid comprises water in liquid and / or vapor form and / or wash liquor.

Erfindungsgemäß kann vorgeschlagen sein, dass das Reservoir bereitgestellt ist in dem Innenkasten, einem Ablöschkasten und/oder einem Wasserkessel eines Dampfgenerators.According to the invention, it may be proposed that the reservoir is provided in the inner box, an extinguishing box and / or a boiler of a steam generator.

Dabei kann vorgesehen sein, dass der Innenkasten befüllbar ist über einen ersten Fluideingang in Wirkverbindung mit dem Ablöschkasten, einen zweiten Fluideingang in Wirkverbindung mit dem Wasserkessel und/oder einen dritten Fluideingang in Wirkverbindung mit einer Wasserleitung.It can be provided that the inner box can be filled via a first fluid inlet in operative connection with the extinguishing box, a second fluid inlet in operative connection with the water boiler and / or a third fluid inlet in operative connection with a water pipe.

Mit der Erfindung wird auch vorgeschlagen, dass der Ablöschkasten befüllbar ist über einen vierten Fluideingang in Wirkverbindung mit dem Innenkasten, einen fünften Fluideingang in Wirkverbindung mit dem Wasserkessel und/oder einen sechsten Fluideingang in Wirkverbindung mit einer Wasserleitung.The invention also proposes that the quenching box can be filled via a fourth fluid inlet in operative connection with the inner box, a fifth fluid inlet in operative connection with the water boiler and / or a sixth fluid inlet in operative connection with a water conduit.

Weiterhin sieht die Erfindung vor, dass der Wasserkessel befüllbar ist über einen siebten Fluideingang in Wirkverbindung mit dem Innenkasten, einen achten Fluideingang in Wirkverbindung mit dem Ablöschkasten und/oder einen neunten Fluideingang in Wirkverbindung mit einer Wasserleitung.Furthermore, the invention provides that the water boiler can be filled via a seventh fluid inlet in operative connection with the inner box, an eighth fluid inlet in operative connection with the extinguishing box and / or a ninth fluid inlet in operative connection with a water pipe.

Auch kann vorgesehen sein, dass der erste Fluideingang mit einer ersten Absperreinrichtung und/oder Pumpeinrichtung, der zweite Fluideingang mit einer zweiten Absperreinrichtung und/oder Pumpeinrichtung, der dritte Fluideingang mit einer dritten Absperreinrichtung und/oder Pumpeinrichtung, der vierte Fluideingang mit einer vierten Absperreinrichtung und/oder Pumpeinrichtung, der fünfte Fluideingang mit einer fünften Absperreinrichtung und/oder Pumpeinrichtung, der sechste Fluideingang mit einer sechsten Absperreinrichtung und/oder Pumpeinrichtung, der siebte Fluideingang mit einer siebten Absperreinrichtung und/oder Pumpeinrichtung, der achte Fluideingang mit einer achten Absperreinrichtung und/oder Pumpeinrichtung und/oder der neunte Fluideingang mit einer neunten Absperreinrichtung und/oder Pumpeinrichtung in Wirkverbindung steht bzw. stehen.It can also be provided that the first fluid inlet with a first shut-off device and / or pump device, the second fluid inlet with a second shut-off device and / or pump device, the third fluid inlet with a third shut-off device and / or pump device, the fourth fluid inlet with a fourth shut-off device and / or pumping device, the fifth fluid inlet with a fifth shut-off device and / or pumping device, the sixth fluid inlet with a sixth shut-off device and / or pumping device, the seventh fluid inlet with a seventh shut-off device and / or pumping device, the eighth fluid inlet with an eighth shut-off device and / or Pumping device and / or the ninth fluid inlet with a ninth shut-off device and / or pumping device is in operative connection or stand.

Erfindungsgemäß wird vorgeschlagen, dass der Innenkasten entleerbar ist über einen ersten Fluidausgang in Wirkverbindung mit dem Ablöschkasten, einen zweiten Fluidausgang in Wirkverbindung mit dem Wasserkessel und/oder einen dritten Fluidausgang in Wirkverbindung mit einem Wasserabfluss.According to the invention, it is proposed that the inner box can be emptied via a first fluid outlet in operative connection with the quenching box, a second fluid outlet in operative connection with the kettle and / or a third fluid outlet in operative connection with a water outlet.

Ferner kann vorgesehen sein, dass der Ablöschkasten entleerbar ist über einen vierten Fluidausgang in Wirkverbindung mit dem Innenkasten, einen fünften Fluidausgang in Wirkverbindung mit dem Wasserkessel und/oder einem sechsten Fluidausgang in Wirkverbindung mit einem Wasserabfluss.Furthermore, it can be provided that the quenching box can be emptied via a fourth fluid outlet in operative connection with the inner box, a fifth fluid outlet in operative connection with the kettle and / or a sixth fluid outlet in operative connection with a water outlet.

Erfindungsgemäße Ausführungsformen können dadurch gekennzeichnet sein, dass der Wasserkessel entleerbar ist über einen siebten Fluidausgang in Wirkverbindung mit dem Innenkasten, einen achten Fluidausgang in Wirkverbindung mit dem Ablöschkasten und/oder einem neunten Fluidausgang in Wirkverbindung mit einem Wasserabfluss.Embodiments of the invention may be characterized in that the kettle is emptied via a seventh fluid outlet in operative connection with the inner box, an eighth fluid outlet operatively connected to the quenching box, and / or a ninth fluid outlet in operative communication with a water drain.

Es kann vorgesehen sein, dass der erste Fluidausgang mit einer zehnten Absperreinrichtung und/oder Pumpeinrichtung, der zweite Fluidausgang mit einer elften Absperreinrichtung und/oder Pumpeinrichtung, der dritte Fluidausgang mit einer zwölften Absperreinrichtung und/oder Pumpeinrichtung, der vierte Fluidausgang mit einer dreizehnten Absperreinrichtung und/oder Pumpeinrichtung, der fünfte Fluidausgang mit einer vierzehnten Absperreinrichtung und/oder Pumpeinrichtung, der sechste Fluidausgang mit einer fünfzehnten Absperreinrichtung und/oder Pumpeinrichtung, der siebte Fluidausgang mit einer sechzehnten Absperreinrichtung und/oder Pumpeinrichtung, der achte Fluidausgang mit einer siebzehnten Absperreinrichtung und/oder Pumpeinrichtung und/oder der neunte Fluidausgang mit einer achtzehnten Absperreinrichtung und/oder Pumpeinrichtung in Wirkverbindung steht bzw, stehen.It can be provided that the first fluid outlet with a tenth shut-off device and / or pumping device, the second fluid outlet with an eleventh shut-off device and / or pumping device, the third fluid outlet with a twelfth obturator and / or pumping device, the fourth fluid outlet with a thirteenth obturator and Pump device, the fifth fluid outlet with a fourteenth valve and / or pumping device, the sixth fluid outlet with a fifteenth obturator and / or pumping device, the seventh fluid outlet with a sixteenth obturator and / or pumping device, the eighth fluid outlet with a seventeenth obturator and / or Pumping device and / or the ninth fluid outlet with an eighteenth shut-off device and / or pumping device is in operative connection or, stand.

Es wird erfindungsgemäß vorgeschlagen, dass die erste, zweite, dritte, vierte, fünfte, sechste, siebte, achte, neunte, zehnte, elfte, zwölfte, dreizehnte, vierzehnte, fünfzehnte, sechzehnte, siebzehnte und/oder achtzehnte Absperreinrichtung zumindest ein Ventil umfasst bzw. umfassen.According to the invention, it is proposed that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and / or eighteenth shut-off device comprise or comprise at least one valve . include.

Ferner kann vorgesehen sein, dass die erste, zweite, dritte, vierte, fünfte, sechste, siebte, achte, neunte, zehnte, elfte, zwölfte, dreizehnte, vierzehnte, fünfzehnte, sechszehnte, siebzehnte und/oder achtzehnte Absperreinrichtung und/oder Pumpeinrichtung über die Steuer- oder Regeleinrichtung betätigbar ist bzw. sind, insbesondere jeweils in Abhängigkeit von einem Vergleich des Ist-Wertes der charakteristischen Größe mit zumindest einem Soll-Wert für die charakteristische Größe.Furthermore, it can be provided that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and / or eighteenth shut-off device and / or pumping means via the control or regulating device is or are operable, in particular depending in each case on a comparison of the actual value of the characteristic size with at least one desired value for the characteristic size.

Dabei kann vorgesehen sein, dass das Taktverhältnis der ersten, zweiten, dritten, vierten, fünften, sechsten, siebten, achten, neunten, zehnten, elften, zwölften, dreizehnten, vierzehnten, fünfzehnten, sechzehnten, siebzehnten und/oder achtzehnten Absperreinrichtung und/oder Pumpeinrichtung über die Steuer- oder Regeleinrichtung einstellbar, insbesondere steuerbar oder regelbar, ist bzw. sind.It can be provided that the duty cycle of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and / or eighteenth shut-off and / or Pumping device via the control or regulating device adjustable, in particular controllable or adjustable, is or are.

Schließlich wird erfindungsgemäß vorgeschlagen, dass die Befüllungs- und/oder Füllmengenüberwachungseinrichtung die Gebläseeinrichtung und die Steuer- und/oder Regeleinrichtung zumindest teilweise umfasst, wobei die Befüllungs- und/oder Füllmengenüberwachungseinrichtung vorzugsweise auch die erste, zweite, dritte, vierte, fünfte, sechste, siebte, achte, neunte, zehnte, elfte, zwölfte, dreizehnte, vierzehnte, fünfzehnte, sechzehnte, siebzehnte und/oder achtzehnte Absperreinrichtung und/oder Pumpeinrichtung umfasst.Finally, it is proposed according to the invention that the filling and / or filling quantity monitoring device at least partially comprises the blower device and the control and / or regulating device, wherein the filling and / or filling quantity monitoring device preferably also the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, and / or eighteenth obturator and / or pumping means.

Der Erfindung liegt somit die überraschende Erkenntnis zu Grunde, dass durch die Auswertung beispielsweise von Drehzahlschwankungen eines Lüfterrads in einem Gargerät, sei es betreffend die Amplituden, Frequenzen, Phasen oder zeitlichen Abstände zueinander, in dem Fall, in dem über ein Lüfterrad und gegebenenfalls eine Pumpeinrichtung in einem Innenkasten des Gargeräts beispielsweise eine Waschflotte zirkuliert wird, die aus einem Ablöschkasten in den Innenkasten getaktet gepumpt und aus dem Innenkasten zurück in den Ablöschkasten fließt, dadurch hinreichend genaue Aussagen über den Befüllungszustand bzw. die Füllmenge des Waschflottenumwälzkreislaufes getroffen werden können, dass das Lüfterrad durch darauf auftreffende Waschflotte abgebremst wird, so dass es zu einem Lastwechsel kommt, der sich unter anderem in Drehzahlschwankungen niederschlägt. Andererseits kann auch die Stromaufnahme oder Leistungsaufnahme beim Lastwechsel durch auf das Lüfterrad auftreffende Waschflotte erfindungsgemäß ausgewertet werden, insbesondere in Form der Auswertung von Abweichungen von einem Soll-Wert, wobei bei kleinen Abweichungen die zirkulierende Waschflottenmenge gering und bei großen Abweichungen die zirkulierende Waschflottenmenge groß ist.The invention is therefore based on the surprising finding that by evaluating, for example, speed fluctuations of a fan wheel in a cooking appliance, be it in terms of amplitudes, frequencies, phases or time intervals relative to one another, in the case in which a fan wheel and optionally a pumping device For example, a wash liquor is circulated in an inner box of the cooking appliance, which is pumped out of a quenching box into the inner box and flows out of the inner box back into the quenching box, thus sufficiently accurate statements about the filling state or the filling amount of Waschflottenumwälzkreislaufes can be made that the fan is slowed down by impinging wash liquor, so there is a load change, which is reflected among other things in speed fluctuations. On the other hand, the power consumption or power consumption during load changes can be evaluated by impinging on the fan wash liquor according to the invention, especially in the form of the evaluation of deviations from a target value, with small deviations, the circulating amount of wash liquor low and large deviations, the circulating amount of wash liquor is large.

Es hat sich als besonders vorteilhaft erfindungsgemäß erwiesen, eine Zeitdifferenz als Maß für eine Befüllungs- und/oder Füllmengen und/oder einer Änderung derselben heranzuziehen, die bestimmt wird aus der Zeitspanne zwischen einem Unterschreiten eines unteren Grenzwertes und einem Überschreiten eines oberen Grenzwertes der Drehzahl des Lüfterrads innerhalb eines Pumptaktes. Bei einer vorgegebenen Taktung einer Pumpeinrichtung ist nämlich zu beobachten, dass zu einem Zeitpunkt t1 nach Einschalten der Pumpeinrichtung zum Zeitpunkt t0 eine Drehzahlerniedrigung aufgrund der Abbremsung des Lüfterrads durch auftreffende Waschflotte stattfindet. Diese Erniedrigung wird vorteilhafterweise durch eine steigende Leistungsaufnahme über den Motor, bei dem es sich vorzugsweise um einen elektrisch kommutierten Motor handelt, der eine schnelle Nachregelung bei anliegender Last liefert, derart kompensiert, dass nach einer bestimmten Zeitspanne nach Ausschalten der Pumpeinrichtung zum t2, nämlich zum Zeitpunkt t3, eine Erhöhung der Drehzahl beobachtbar ist. Also stellt die Zeitdifferenz t3 - t1 eine charakteristische Größe des Lüfterrads in einem erfindungsgemäßen Gargerät dar, die zur Auswertung einer Befüllungs- und/oder Füllmenge herangezogen werden kann. Diese Zeitdifferenz ist zudem unabhängig von veränderlichen Einbauten im Gargerät, wie in Form unterschiedlichen Zubehörs, oder auch von einer unterschiedlichen Beschickung des Gargerätes.It has proved to be particularly advantageous according to the invention to use a time difference as a measure of a filling and / or filling quantities and / or a change thereof, which is determined from the period between a falling below a lower limit and an upper limit of the speed of the Fan wheel within a pumping cycle. At a predetermined timing of a pump device it can be observed that at a time t 1 after switching on the pump device at the time t 0, a speed reduction due to the deceleration of the fan takes place by impinging wash liquor. This reduction is advantageously compensated for by an increasing power consumption via the motor, which is preferably an electrically commutated motor which provides rapid readjustment when the load is applied, such that after a certain period of time after switching off the pump device to t 2 , namely At time t 3 , an increase in the speed is observable. Thus, the time difference t 3 - t 1 is a characteristic size of the fan in a cooking appliance according to the invention, which can be used to evaluate a filling and / or filling quantity. This time difference is also independent of variable installations in the cooking appliance, such as in the form of different accessories, or from a different loading of the cooking appliance.

Mit der Erfindung wird somit erstmals berücksichtigt, dass der Fluidumwälzkreislauf insbesondere beim Reinigen in einem Gargerät ausschlaggebend für ein zufriedenstellendes Reinigungsergebnis ist, und die Füllung, also der Befüllungszustand bzw. die Füllmenge, des Umwälzkreislaufes mit Fluid über die Folgen der Beaufschlagung des Lüfterrads mit Fluid zwecks Regelung des Fluidumwälzkreislaufes zu bestimmen ist.The invention thus takes into account, for the first time, that the fluid circulation, in particular when cleaning in a cooking appliance, is decisive for a satisfactory cleaning result, and the filling, ie the filling state or the filling quantity, of the circulation circuit with fluid over the consequences of the impingement of the fan wheel with fluid Control of Fluidumwälzkreislaufes is to determine.

Die bei einem erfindungsgemäßen Gargerät zwecks Überwachung einer Befüllung oder einer Füllmenge auszuwertenden Daten, also beispielsweise Drehzahlschwankungen, können selbstverständlich zwecks Auswertung noch weiter verarbeitet werden, insbesondere einer Filterung unterzogen werden. Zudem ist erfindungsgemäß vorgesehen, in einer Steuer- und/oder Regeleinrichtung einen Soll/Ist-Wert-Vergleich durchzuführen, um in Abhängigkeit des Ergebnisses besagten Vergleiches insbesondere eine Frischwasserzufuhr, beispielsweise in den Ablöschkasten durch Öffnen eines Ventils zu einer Wasserleitung, zu regeln.The data to be evaluated in a cooking appliance according to the invention for the purpose of monitoring a filling or a filling quantity, for example speed fluctuations, can, of course, be further processed for the purpose of evaluation, in particular subjected to filtering. In addition, the invention provides to perform a target / actual value comparison in a control and / or regulating device in order to regulate depending on the result of said comparison in particular a fresh water supply, for example in the Ablöschkasten by opening a valve to a water pipe.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Beschreibung eines Ausführungsbeispiels der Erfindung. Dabei zeigt die aus einer einzigen Figur bestehende Zeichnung eine schematische Darstellung eines Gargeräts.Further features and advantages of the invention will become apparent from the following description of an embodiment of the invention. The drawing consisting of a single figure shows a schematic representation of a cooking appliance.

Wie der Figur zu entnehmen ist, umfasst ein erfindungsgemäßes Gargerät 1 einen Innenkasten 2, in dem ein Lüfterrad 3 angeordnet ist. Das Lüfterrad 3 ist über eine Antriebswelle 4 mit einem Motor 5 verbunden. Der Motor 5 ist seinerseits sowohl über eine Steuerleitung 6 als auch eine Messleitung 7 mit einer Steuereinrichtung 8 verbunden. Zudem ist der Innenkasten 2 über eine Ablaufleitung 9 mit einem Ablöschkasten 10 verbunden, der seinerseits unter Zwischenschaltung einer Pumpe 11 und einer Waschflottenleitung 12 über ein Austrittsglied 13 wieder mit dem Innenkasten 2 verbunden ist. Des Weiteren ist der Ablöschkasten 10 über eine Ablöschdüse 14 mit Frischwasser aus einer Wasserleitung 15 bei geöffnetem Ventil 16 befüllbar, wobei das Ventil 16 einerseits über eine Steuerleitung 17 andererseits über eine Messleitung 18 mit der Steuereinrichtung 8 in Verbindung steht. Das Frischwasser ist Bestandteil eines Fluids 19, das unter Einsatz der Pumpe 11, die ebenfalls über eine Steuerleitung 20 und eine Messleitung 21 mit der Steuereinrichtung 8 verbunden ist, im Gargerät 1 insbesondere bei einem Reinigungsprozess umgewälzt wird. Im Falle eines Reinigungsprozesses wird das Fluid als Waschflotte 19 bezeichnet. Schließlich kann über einen Abfluss 24 Waschflotte 19 aus dem Zirkulationskreislauf des Gargerätes 1, insbesondere über den Ablöschkasten 10, unter Zwischenschaltung eines Ventils (nicht gezeigt) entsorgt werden. Die Wasserleitung 15 sowie den Abfluss 24 können Bestandteil eines Hauswassernetzes sein. Das Ventil 21 ist sowohl über eine Messleitung 22 als auch eine Steuerleitung 23 mit der Steuereinrichtung 8 verbunden.As the figure can be seen, a cooking appliance 1 according to the invention comprises an inner box 2, in which a fan 3 is arranged. The fan 3 is connected via a drive shaft 4 with a motor 5. The motor 5 is in turn connected to a control device 8 both via a control line 6 and a measuring line 7. In addition, the inner box 2 is connected via a drain line 9 with a quenching box 10, which in turn is connected to the inner box 2 via an outlet member 13 with the interposition of a pump 11 and a wash liquor line 12. Furthermore, the extinguishing box 10 can be filled via a quenching nozzle 14 with fresh water from a water pipe 15 with the valve 16 open, the valve 16 communicating via a control line 17 with the control device 8 via a measuring line 18. The fresh water is part of a fluid 19, which is circulated in the cooking appliance 1 in particular during a cleaning process using the pump 11, which is also connected via a control line 20 and a measuring line 21 to the control device 8. In the case of a cleaning process, the fluid is referred to as wash liquor 19. Finally, via a drain 24 washing liquor 19 from the circulation circuit of the cooking appliance 1, in particular via the Ablöschkasten 10, with the interposition of a valve (not shown) are disposed of. The water pipe 15 and the drain 24 may be part of a domestic water network. The valve 21 is connected both via a measuring line 22 and a control line 23 to the control device 8.

Das soeben im Aufbau beschriebene Gargerät 1 kann zur Überwachung der Befüllung und der Füllmenge des Ablöschkastens 10 nach einem Ausführungsbeispiel des erfindungsgemäßen Verfahrens wie folgt arbeiten:The cooking appliance 1 just described in the construction can operate as follows for monitoring the filling and the filling quantity of the quenching box 10 according to an embodiment of the method according to the invention:

Mit Beginn einer Reinigungsphase wird der anfänglich leere Ablöschkasten 10 mit Frischwasser über die Ablöschdüse 14 befüllt. Das in den Ablöschkasten 10 eingeführte Frischwasser wird sogleich über die Pumpe 11 zum Austrittsglied 13 gefördert, um von dort auf das Lüfterrad 3 aufzutreffen. Die Pumpe 11 arbeitet dabei in einem einstellbaren Taktverhältnis, wie beispielsweise 10 Sekunden an und 5 Sekunden aus. Das Taktverhältnis ist über die Steuereinrichtung 8 wahlweise veränderbar.At the beginning of a cleaning phase, the initially empty quenching box 10 is filled with fresh water via the quenching nozzle 14. The introduced into the quenching box 10 fresh water is immediately promoted via the pump 11 to the outlet member 13 to impinge on the fan 3 from there. The pump 11 operates in an adjustable clock ratio, such as 10 seconds on and 5 seconds off. The clock ratio can be changed optionally via the control device 8.

Das Ventil 16 wird erst dann über die Steuereinrichtung 8 geschlossen, wenn ein Vergleich eines ersten Soll-Wertes für die Lastaufnahme des Lüfterrads 3 aufgrund einer Abbremsung durch die darauf auftreffende Waschflotte 19, der einer gewünschten Füllmenge des Umwälzkreislaufes der Waschflotte 19 entspricht, mit dem über die Messleitung 7 erfassten Ist-Wert der Lastaufnahme übereinstimmt. Dann ist die Befüllungsüberwachung abgeschlossen. Im Anschluss findet eine Füllmengenüberwachung der vom Innenkasten 2 in den Ablöschkasten 10 und zurück in den Innenkasten zirkulierten Waschflotte 19, also des Fluidumwälzkreislaufes, durch eine Auswertung der Varianz der Drehzahl, also der Drehzahlschwankungen, genauer gesagt der Höhe der Drehzahlschwankungen, des Lüfterrads 3 statt. Die Höhe der Schwankungen erlaubt, Aussagen über die Umwälzleistung in dem erfindungsgemäßen Gargerät zu treffen. Während ein homogene Drehzahl des Lüfterrads 3 auf keine oder nur eine geringe Beeinflussung des Lüfterrads 3 durch die Waschflotte 19 hindeuten würde, ist eine inhomogene Drehzahl, die über Drehzahlschwankungen auswertbar ist, ein Indiz für eine intakte Umwälzung. Bei der Auswertung der Drehzahlschwankungen wird ein Soll-Wert der Drehzahl als Referenzpunkt berücksichtigt und eine Filterung durchgeführt. Ferner wird bei der Auswertung über die Steuereinrichtung 8 auch das Taktverhältnis der Pumpe 11 berücksichtigt, wobei darauf hinzuweisen ist, dass ohne Taktung der Pumpe 11 der Motor 5 sich auf eine gegebene Last einstellen und somit die Drehzahl des Lüfterrads 3 auf einen Soll-Wert hochregeln würde, was die Bestimmung der Fluidmenge im Umwälzkreislauf nicht ermöglichen würde.The valve 16 is only then closed by the control device 8, when a comparison of a first target value for the load of the impeller 3 due to a deceleration by the incident thereon wash liquor 19, which corresponds to a desired amount of Umwälzkreislaufes the wash liquor 19 with the above the measuring line 7 detected actual value of the load pickup coincides. Then the filling monitoring is completed. Following is a Füllmengenüberwachung of circulated from the inner box 2 in the quenching box 10 and back into the inner box wash liquor 19, so the Fluidumwälzkreislaufes, by evaluating the variance of the speed, ie the speed fluctuations, more precisely, the height of the speed fluctuations of the fan 3 instead. The height of the fluctuations allows to make statements about the circulation rate in the cooking appliance according to the invention. While a homogeneous speed of the fan 3 would indicate no or only a slight influence of the fan 3 by the wash liquor 19, an inhomogeneous speed, which can be evaluated via speed fluctuations, an indication of an intact circulation. When evaluating the speed fluctuations, a setpoint value of the speed is taken into account as the reference point and filtering is performed. Furthermore, in the evaluation by the control device 8, the duty cycle of the pump 11 is taken into account, it being pointed out that without clocking the pump 11, the motor 5 to adjust to a given load and thus upshift the speed of the fan 3 to a desired value would, which would not allow the determination of the amount of fluid in Umwälzkreislauf.

Ergibt nun die Auswertung der Drehzahlschwankungen des Lüfterrads 3, dass die für die Reinigung notwendige Füllmenge an Waschflotte 19 im Umwälzkreislauf des erfindungsgemä-ßen Gargerätes 1 nicht vorliegt, so wird das Ventil 16 solange geöffnet, bis die optimale Füllung vorliegt.If the evaluation of the rotational speed fluctuations of the fan wheel 3 now shows that the filling quantity of washing liquor 19 required for cleaning does not exist in the circulation circuit of the cooking appliance 1 according to the invention, the valve 16 is opened until the optimum filling is present.

Ferner kann in unterschiedlichen Reinigungsschritten eine unterschiedliche Menge an Waschflotte 19 benötigt werden, so dass unterschiedliche Soll-Werte vorliegen, mit denen ein Vergleich im Laufe des Reinigungsverfahrens durchgeführt wird.Furthermore, a different amount of wash liquor 19 may be required in different purification steps, so that different target values are present, with which a comparison is carried out in the course of the cleaning process.

Um unabhängig von insbesondere Zubehör sowie Gargut (beides nicht dargestellt) im Innenkasten 2 eine Überwachung der Befüllungs- und/oder Füllmengen mit beispielsweise Waschflotte 19 durchführen zu können, ist es nach einem weiteren Ausführungsbeispiel des erfindungsgemäßen Verfahrens bevorzugt, Zeitdifferenzen auszuwerten. Soll beispielsweise die Füllmenge an Waschflotte 19 während einer Reinigungsphase konstant gehalten werden, so kann bei einer vorgegebenen Taktung der Pumpe 11 folgendes Verfahren, vorzugsweise mehrfach, durchfahren werden:In order to be able to perform monitoring of the filling and / or filling quantities with, for example, wash liquor 19, independently of particular accessories and food to be cooked (both not shown) in inner box 2, it is according to another embodiment of the invention Method preferred to evaluate time differences. If, for example, the filling quantity of wash liquor 19 is to be kept constant during a cleaning phase, the following process, preferably several times, can be carried out at a predetermined timing of the pump 11:

Zu einem Zeitpunkt t0 wird die Pumpe 11 eingeschaltet. Sobald eine Erniedrigung der Drehzahl, insbesondere in Form einer Unterschreitung eines ersten Soll-Wertes, beobachtet wird, wird der Zeitpunkt t1 festgehalten. Wird dann aufgrund einer steigenden Leistungsaufnahme des Motors 5 diese Erniedrigung der Drehzahl kompensiert, so ist der Zeitpunkt zu notieren, zu dem nach Ausschalten der Pumpe 11 zum Zeitpunkt t2 eine Erhöhung der Drehzahl, insbesondere in Form einer Überschreitung eines zweiten Soll-Wertes, beobachtbar ist, wobei dieser Zeitpunkt mit t3 zu bezeichnen ist. Die Differenz t3-t1 liefert dann ein Maß für die Füllmenge, wobei für eine gewünschte Füllmenge ein dritter Soll-Wert oder aber ein Soll-Wertebereich vorliegt. Unterschreitet nun die Differenz t3-t1 beispielsweise diesen dritten Soll-Wert, so liegt ein Mangel an Waschflotte 19 vor. Dieser Mangel an Waschflotte 19 ist beispielsweise durch Einführen von weiterem Frischwasser durch Ansteuerung des Ventils 16 der Ablöschdüse 14 über die Steuereinrichtung 8 möglich. Sollte jedoch die Differenz t 3 - t1 beispielsweise größer als der dritte Soll-Wert sein, insbesondere keine Erhöhung der Drehzahl nach Ausschalten der Pumpe 11 beobachtet werden, so kann über die Steuereinrichtung 8 beispielsweise das Ventil 16 zur Ablöschdüse 14 angesteuert werden. In letzterem Fall ist nämlich davon auszugehen, dass ebenfalls ein Mangel an Waschflotte 19 vorliegt, also sich die Menge an Waschflotte 19 während des Reinigungsverfahrens im Zeitraum von t 0 bis t3 langsam reduziert hat. Von einer Überfüllung an Waschflotte 19 ist insbesondere auf Grund eines nicht dargestellten Notüberlaufs nicht auszugehen.At a time t 0 , the pump 11 is turned on. As soon as a decrease in the rotational speed, in particular in the form of a falling below a first target value, is observed, the time t 1 is recorded. If this reduction of the rotational speed is then compensated on the basis of an increasing power consumption of the motor 5, then the point in time must be noted at which an increase of the rotational speed, in particular in the form of an exceeding of a second desired value, can be observed after switching off the pump 11 at the time t 2 is, this time is to call t 3 . The difference t 3 -t 1 then provides a measure of the filling quantity, wherein for a desired filling quantity a third setpoint value or else a setpoint value range is present. If, for example, the difference t 3 -t 1 falls below this third setpoint value, then there is a lack of wash liquor 19. This lack of wash liquor 19 is possible for example by introducing more fresh water by controlling the valve 16 of the Ablöschdüse 14 via the control device 8. If, however, the difference t 3 -t 1 is, for example, greater than the third setpoint value, in particular no increase in the rotational speed after the pump 11 has been switched off, the valve 16 for the quenching nozzle 14 can be actuated via the control device 8, for example. In the latter case, it can be assumed that there is likewise a lack of wash liquor 19, that is, the amount of wash liquor 19 has slowly decreased during the cleaning process in the period from t 0 to t 3 . From an overfilling of wash liquor 19 is not to be expected, in particular due to an emergency overflow, not shown.

Die in der vorstehenden Beschreibung, in den Ansprüchen sowie in der Zeichnung offenbarten Merkmale der Erfindung können sowohl einzeln als auch in jeder beliebigen Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The features of the invention disclosed in the foregoing description, in the claims and in the drawing may be essential both individually and in any combination for the realization of the invention in its various embodiments.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
GargerätCooking appliance
22
Innenkasteninner box
33
Lüfterradfan
44
Antriebswelledrive shaft
55
Motorengine
66
Steuerleitungcontrol line
77
MessleitungMeasurement line
88th
Steuereinrichtungcontrol device
99
Ablaufleitungdrain line
1010
Ablöschkastenquenching box
1111
Pumpepump
1212
WaschflottenleitungWash liquor line
1313
Austrittsgliedexit link
1414
AblöschdüseAblöschdüse
1515
Wasserleitungwater pipe
1616
VentilValve
1717
Steuerleitungcontrol line
1818
MessleitungMeasurement line
1919
Fluidfluid
2020
Steuerleitungcontrol line
2121
MessleitungMeasurement line
2424
Abflußoutflow

Claims (26)

  1. Filling and/or charge monitoring method for at least one reservoir (10) for at least temporarily receiving at least one fluid (19) in a cooking device (1) with an internal compartment (2), comprising a cooking chamber with at least one fluid inlet (13) and at least one fluid outlet (24), a fan device (3, 4, 5) comprising at least one fan wheel (3) in the internal compartment (2), at least one drive shaft (4) for the fan wheel (3) and at least one motor (5) for the drive shaft (4), for circulating at least part of the fluid (19) at least in the internal compartment (2), and with a control or regulating device operatively connected to the fan device (3, 4, 5) and/or with a filling and/or charge monitoring device, characterized in that at least one characteristic variable of the fan device (3, 4, 5) that changes on the basis of the force applied by the quantity of fluid (19) impinging on the fan wheel (3) is evaluated by the filling and/or charge monitoring device.
  2. Method according to Claim 1, characterized in that the rotational speed, the fluctuation in the rotational speed, the power consumption, the fluctuation in the power consumption, the current consumption and/or the fluctuation in the current consumption of the fan device (3, 4, 5) is and/or are detected at least temporarily as a characteristic variable for monitoring the filling and/or charge.
  3. Method according to Claim 1 or 2, characterized in that at least part of the fluid (19) is circulated at least in the internal compartment (2) via at least one pumping device (11), the pumping device (11) preferably being clocked.
  4. Method according to Claim 3, characterized in that the pumping device (11) is switched on at a time t0, a reduction in the rotational speed of the fan wheel (3) due to the quantity of fluid (19) impinging on the fan wheel (3) is detected at a time t1, this reduction in the rotational speed preferably being subsequently at least partially compensated for by the motor (5) by increasing power consumption, the pumping device (11) is switched off at a time t2, an increase in the rotational speed, in particular owing to the said compensation by the motor (5), is detected at a time t3, and the filling and/or charge and/or a change of the same is and/or are determined from the time difference t3-t1.
  5. Method according to one of Claims 2 to 4, characterized in that an upper limit value of the rotational speed and/or a lower limit value of the rotational speed is and/or are determined, preferably as a function of the clocking of the pumping device (11), the quantity of fluid (19) supplied to the internal chamber (2), the quantity of fluid (19) removed from the internal chamber (2), the dimensioning of the cooking device (1), the equipping of the cooking device (1) and/or the loading of the internal chamber (2) with goods for cooking.
  6. Method according to Claim 5, characterized in that a time difference is determined from the period of time between falling short of the lower limit value and exceeding the upper limit value, preferably as a function of the clocking of the pumping device (11), in order to monitor the filling and/or charge.
  7. Method according to one of the preceding claims, characterized in that at least one device for feeding the fluid (19) into the internal compartment (2) and/or at least one device for removing fluid (19) from the internal compartment (2) is and/or are set, preferably controlled or regulated, as a function of a detected filling and/or charge.
  8. Cooking device (1) with
    an internal compartment (2), comprising a cooking chamber with at least one fluid inlet and at least one fluid outlet,
    a fan device, comprising at least one fan wheel (3) in the internal compartment (2), at least one drive shaft (4) for the fan wheel (3) and at least one motor (5) for the drive shaft (4) in order to circulate at least part of at least one fluid (19) at least in the internal compartment (2),
    at least one reservoir (10) for at least temporarily receiving at least the fluid (19) with at least one fluid inlet and at least one fluid outlet, a filling and/or charge monitoring device (5, 8) for the reservoir (10), and
    a control or regulating device (8) operatively connected to the fan device (5) and/or the filling and/or charge monitoring device (5, 8), characterized in that the filling and/or charge monitoring device (5, 8) is operatively connected to the fan device (3, 4, 5) in order to detect at least one characteristic variable for the quantity of fluid impinging on the fan wheel (3).
  9. Cooking device according to Claim 8, characterized in that the motor (5), preferably in the form of an electrically commutated motor, is operatively connected to the control or regulating device (8).
  10. Cooking device according to Claim 8 or 9, characterized by at least one pumping device (11) for circulating at least part of the fluid at least in the internal compartment (2), preferably in operative connection with the control or regulating device (8) for setting the pumping power and/or the clocking of the pumping device (11).
  11. Cooking device according to one of the preceding claims, characterized in that the characteristic variable can be determined by evaluating the rotational speed, the fluctuation in the rotational speed, the power consumption, the fluctuation in the power consumption, the current consumption and/or the fluctuation in the current consumption.
  12. Cooking device according to Claim 10 or 11, characterized in that, when determining the characteristic variable, the clocking of the pumping device (11) can be taken into consideration, and preferably the period of time between a first reduction in the rotational speed after the pumping device (11) is switched on and a first increase in rotational speed after the pumping device (11) is switched off, in particular during a clock pulse, can be evaluated.
  13. Cooking device according to one of Claims 8 to 12, characterized in that the fluid (19) comprises water in liquid and/or steam form and/or detergent solution.
  14. Cooking device according to one of Claims 8 to 13, characterized in that the reservoir (10) is provided in the internal compartment, a water-adding compartment (10) and/or a water boiler of a steam generator.
  15. Cooking device according to Claim 14, characterized in that the internal compartment (2) can be filled via a first fluid inlet in operative connection with the water-adding compartment (10), a second fluid inlet in operative connection with the water boiler and/or a third fluid inlet in operative connection with a water pipe.
  16. Cooking device according to Claim 14 or 15, characterized in that the water-adding compartment (10) can be filled via a fourth fluid inlet in operative connection with the internal compartment (2), a fifth fluid inlet in operative connection with the water boiler and/or a sixth fluid inlet in operative connection of a water pipe (15).
  17. Cooking device according to one of Claims 14 to 16, characterized in that the water boiler can be filled via a seventh fluid inlet in operative connection with the internal compartment, an eighth fluid inlet in operative connection with the water-adding compartment and/or a ninth fluid inlet in operative connection with a water pipe.
  18. Cooking device according to one of Claims 15 to 17, characterized in that the first fluid inlet is in operative connection with a first shut-off device and/or pumping device (11), the second fluid inlet is in operative connection with a second shut-off device and/or pumping device, the third fluid inlet is in operative connection with a third shut-off device and/or pumping device, the fourth fluid inlet is in operative connection with a fourth shut-off device and/or pumping device, the fifth fluid inlet is in operative connection with a fifth shut-off device and/or pumping device, the sixth fluid inlet is in operative connection with a sixth shut-off device (16) and/or pumping device, the seventh fluid inlet is in operative connection with a seventh shut/off device and/or pumping device, the eighth fluid inlet is in operative connection with an eighth shut-off device and/or pumping device, and/or the ninth fluid inlet is in operative connection with a ninth shut-off device and/or pumping device.
  19. Cooking device according to one of Claims 14 to 18, characterized in that the internal compartment (2) can be emptied via a first fluid outlet in operative connection with the water-adding compartment (10), via a second fluid outlet in operative connection with the water boiler and/or via a third fluid outlet in operative connection with a water outflow.
  20. Cooking device according to one of Claims 14 to 19, characterized in that the water-adding compartment (10) can be emptied via a fourth fluid outlet in operative connection with the internal compartment, via a fifth fluid outlet in operative connection with the water boiler and/or a sixth fluid outlet in operative connection with a water outflow (24).
  21. Cooking device according to one of Claims 14 to 20, characterized in that the water boiler can be emptied via a seventh fluid outlet in operative connection with the internal compartment, an eighth fluid outlet in operative connection with the water-adding compartment and/or a ninth fluid outlet in operative connection with a water outflow.
  22. Cooking device according to one of Claims 19 to 21, characterized in that the first fluid outlet is in operative connection with a tenth shut-off device and/or pumping device, the second fluid outlet is in operative connection with an eleventh shut-off device and/or pumping device, the third fluid outlet is in operative connection with a twelfth shut-off device and/or pumping device, the fourth fluid outlet is in operative connection with a thirteenth shut-off device and/or pumping device, the fifth fluid outlet is in operative connection with a fourteenth shut-off device and/or pumping device, the sixth fluid outlet is in operative connection with a fifteenth shut-off device (21) and/or pumping device, the seventh fluid outlet is in operative connection with a sixteenth shut-off device and/or pumping device, the eighth fluid outlet is in operative connection with a seventeenth shut-off device and/or pumping device and/or the ninth fluid outlet is in operative connection with an eighteenth shut-off device and/or pumping device.
  23. Cooking device according to one of Claims 18 to 22, characterized in that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and/or eighteenth shut-off device (16, 21) comprises at least one valve (16, 21).
  24. Cooking device according to one of Claims 18 to 23, characterized in that the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and/or eighteenth shut-off device (16, 21) and/or pumping device (11) can be actuated via the control or regulating device (8), in particular in each case as a function of a comparison of the actual value of the characteristic variable with at least one desired value for the characteristic variable.
  25. Cooking device according to Claim 24, characterized in that the clock pulse ratio of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and/or eighteenth shut-off device (16, 21) and/or pumping device (11) can be set, in particular can be controlled or can be regulated, via the control or regulating device (8).
  26. Cooking device according to one of Claims 8 to 25, characterized in that the filling and/or charge monitoring device (5, 8) at least partially comprises the fan device (5) and the control and/or regulating device (8), the filling and/or charge monitoring device preferably also comprising the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth and/or eighteenth shut-off device and/or pumping device.
EP04818377A 2003-11-13 2004-11-05 Filling and /or charge monitoring method in a cooking device and cooking device with filling and/or charge monitoring Active EP1682822B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07002781A EP1813870A3 (en) 2003-11-13 2004-11-05 Cooking device with filling and/or filling level control

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10353193 2003-11-13
DE102004012824A DE102004012824B4 (en) 2003-11-13 2004-03-15 Filling/charge monitoring process for a cooking device comprises analyzing a characteristic parameter for a ventilation device that changes on the basis of the force exerted by a fluid incident on a fan using a filling/charge
PCT/DE2004/002449 WO2005047773A1 (en) 2003-11-13 2004-11-05 Filling and /or charge monitoring method in a cooking device and cooking device with filling and/or charge monitoring

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP07002781A Division EP1813870A3 (en) 2003-11-13 2004-11-05 Cooking device with filling and/or filling level control

Publications (2)

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EP1682822A1 EP1682822A1 (en) 2006-07-26
EP1682822B1 true EP1682822B1 (en) 2007-02-21

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US (1) US20070137496A1 (en)
EP (1) EP1682822B1 (en)
JP (1) JP4201817B2 (en)
DE (1) DE502004002995D1 (en)
WO (1) WO2005047773A1 (en)

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DE102010039515A1 (en) † 2010-08-19 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Dampfgargerätvorrichtung
KR101465666B1 (en) 2013-07-22 2014-11-26 린나이코리아 주식회사 Apparatus and method for cooling overflow of steam oven
DE102013111480B4 (en) 2013-10-17 2022-01-05 Rational Ag Cooking device in modular design
DE102017127113A1 (en) * 2017-11-17 2019-05-23 Miele & Cie. Kg Cooking device and method for cleaning

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DE2555052A1 (en) * 1975-12-06 1977-06-08 Miele & Cie Dishwasher with program-controlled water supply - uses motor current from circulating pump to ensure correct water level
IT1265578B1 (en) * 1993-11-04 1996-11-22 Zanussi Grandi Impianti Spa COOKING OVEN EQUIPPED WITH PERFECTED AUTOMATIC CLEANING DEVICES
DE19730610C1 (en) * 1997-07-17 1998-10-22 Wiesheu Gmbh Cleaning method for fan-assisted cooking oven with automatic cleaning cycle
DE19912444C2 (en) * 1999-03-19 2001-11-29 Rational Ag Steam generator of a cooking device with a device for electronic calcification monitoring
DE10017966C2 (en) * 2000-04-12 2003-12-04 Rational Ag Device and method for cleaning a cooking appliance interior
DE10109247B4 (en) * 2001-02-26 2004-07-08 Rational Ag Device and method for cleaning a cooking device

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EP1682822A1 (en) 2006-07-26
US20070137496A1 (en) 2007-06-21
DE502004002995D1 (en) 2007-04-05
JP4201817B2 (en) 2008-12-24
WO2005047773A1 (en) 2005-05-26

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