EP1137362B1 - Household dishwasher - Google Patents

Household dishwasher Download PDF

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Publication number
EP1137362B1
EP1137362B1 EP99966925A EP99966925A EP1137362B1 EP 1137362 B1 EP1137362 B1 EP 1137362B1 EP 99966925 A EP99966925 A EP 99966925A EP 99966925 A EP99966925 A EP 99966925A EP 1137362 B1 EP1137362 B1 EP 1137362B1
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EP
European Patent Office
Prior art keywords
outlet
closed
machine according
dishwashing machine
household dishwashing
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99966925A
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German (de)
French (fr)
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EP1137362A2 (en
Inventor
Ulrich Deiss
Helmut Jerg
Bernd Schessl
Michael Rosenbauer
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1137362A2 publication Critical patent/EP1137362A2/en
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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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms

Definitions

  • the invention relates to a domestic dishwasher with a washing container with at least two sprayers arranged in the rinse tank to be cleaned Apply well by means of a liquid pumped by a circulation pump.
  • a domestic dishwasher of the type mentioned above is e.g. from the DE-OS 24 28 991 known.
  • the at least two sprayers are simultaneously with that of a circulating pump fed promoted liquid.
  • each spraying device alternately in succession with that of a Circulating pump fed liquid, so as to full the pressure of the circulation pump to act only on a spray and a smaller amount of liquid and lower energy for circulating and also for heating the to require circulating fluid.
  • the alternate loading of the spraying devices are reversing devices, usually so-called water points, used.
  • EP-OS 02 37 994 is further known, for example, by means of a ball in the Discharge port of the circulation pump, which in case of interruption of the operation of the circulation pump the situation changes, alternately one of the fluid supply lines to open and to close the other at the same time.
  • EP-PS 05 85 905 known by means of a motor driven, rotating horizontal disc with holes one or more Accesses to liquid supply lines to open and close others, where this reversing device has a separate housing and in the cable of the Liquid supply lines is arranged.
  • the invention is therefore based on the object, a household dishwasher of the type mentioned above arranged with a non-restrictive location To create Um Kunststoff issued for feeding sprayers.
  • the funded liquid from the circulation pump to a supply port of a water heater and through the Flow heater is passed, the water heater at least two outlet nozzle for supplying the liquid to each different spray devices having, by means of a water heater, in the flow direction before the Outlet arranged arranged Um Kunststoff Kunststoff opened or closed can be that either one of the output nozzle or a number from outlet ports or all outlet ports alternately one after the other and / or are constantly open or closed.
  • the number of outlet ports of the water heater corresponds the number of sprayers or simultaneously operated groups of sprayers.
  • the water heater has two Outlet port on.
  • each outlet port Outlet opening of the water heater by means of a flow direction closed before the exit openings arranged rotary valve of the reversing device become.
  • the known reversing devices described at the beginning have also the disadvantage that they are complicated and therefore easily susceptible to failure are. This disadvantage is overcome with the preferred feature of the invention, since also e.g. Dirt deposits not a closing function of the rotary valve can be disturbed, as they are pushed away from the rotating rotary valve.
  • the rotary valve at least a closed area and at least one open through a bore Range, whereby a simple manufacture of the rotary valve is achieved.
  • the rotary valve in the direction of rotation in each case alternately after an open area a closed Area between which there is an unfilled space causing another Simplifying the manufacture of the rotary valve and easy control of the circulation the rotary valve is reached.
  • the rotary valve brought by means of a drive device in at least one position in which the at least a closed area or a number of closed areas which at least closes an exit port or a number of exit ports and / or in which all the exit openings are opened.
  • This is the rotary valve suitable for all kinds of feeding of sprayers.
  • the rotary valve has the shape of a propeller blade with two opposite areas, by means of the drive means in a position is brought, in which the closed area closes an outlet opening and the open area keeps the other outlet opening open.
  • the rotary valve on the areas circumferential, in installation position in the direction of the outlet openings towering ribs the one have semicircular cross-section.
  • the drive device is a motor with gearbox.
  • An engine with transmission is one for the continuous change in the loading of the spray as well as for a longer time change or for a permanent opening of one or more supply lines to the sprayers extremely simple controllable drive unit of Um Kunststoff Kunststoff-19, whereby a further simplification of the reversing device achieved has been.
  • a household dishwasher 1 has a washing container 2 on, in the not shown, to be cleaned Good, e.g. dirty dishes and cutlery, Usually in baskets 3, 4 is filled.
  • the washing container 2 are according to the invention at least two sprayers, in the embodiments shown two sprayers 5, 6 are arranged, which arranged in the washing container 2, apply liquid to the material to be cleaned.
  • This liquid usually Rinsing called, is by means of a circulating pump 7 in liquid supply lines 8, 9 promoted to the sprayers 5, 6.
  • the in domestic dishwashers 1 conveyed liquid at least in a part program section heated a wash program, including the inventive household dishwasher 1 has a water heater 10.
  • the in the inventive Household Dishwasher 1 conveyed liquid is from the circulation pump 7 to an inlet nozzle 11 of the water heater 10 and through the water heater 10 headed.
  • the instantaneous water heater 10 has at least two outlet ports, namely one of the number of sprayers or simultaneously operated Groups of sprayers corresponding number of outlet nozzles, in the shown embodiments, two outlet ports 12, 13. From the outlet neck 12, 13 of the water heater 10, the liquid over the already mentioned Liquid supply lines 8, 9 the respective different spray means 5, 6 fed.
  • the necessary for heating the liquid in the water heater 10 heating rods are designated 16.
  • the outlet ports 12, 13 by means of a water heater 10, in the flow direction in front of the outlet nozzle 12, 13 arranged reversing device 20 are opened or closed so that either one of the Outlet ports 12, 13 or a number of outlet ports 12, 13 or all outlet ports 12, 13 alternately one after the other and / or constantly open or closed are.
  • the two outlet ports 12, 13 of the water heater 10 by means of the reversing device 20 so opened or be closed, that either one of the output nozzle 12, 13 or both outlet ports 12, 13 alternately one after the other and / or constantly open or are closed.
  • a rotary valve 21 of the reversing device 20 in Flow direction in front of each outlet nozzle 12, 13 upstream outlet openings 14, 15 of the flow heater 10, through which in each case one of the outlet openings 14, 15 of the water heater 10 can be closed.
  • the initially described, known reversing devices also have the disadvantage that they complicated structure and therefore are easily prone to failure.
  • This disadvantage is with the Rotary valve 21 overcome, as well as e.g. Contamination deposits a closing function of the rotary valve 21 can not disturb, as they are of the rotating Rotary valve 21 are pushed away.
  • the rotary valve 21 has the shape of a propeller blade with two opposing areas 22, 23, wherein the rotary valve 21 a closed area 22 and an open area through a bore 23 has.
  • the rotary valve 21 by means of a drive device 30 brought into at least one position in which the at least one closed Area 22 or a number of closed areas 22 which at least one Exit port 14, 15 or a number of outlet openings 14, 15 closed and / or in which all the outlet openings 14, 15 are opened.
  • the rotary valve 21 has two opposing areas 22, 23, a closed area 22 and an open area 23.
  • the rotary valve 21 is brought by means of the drive means 30 in a position in which the closed area 22 closes an exit opening 15 and the open area 23 the other outlet opening 14 keeps open. In Fig. 2 such a position is shown. As best seen in Fig.
  • the drive unit 30 is a motor 31, e.g. an electric motor, with a in Fig. 2 only schematically illustrated transmissions 32, e.g. a gear transmission.
  • the rotary valve 21 is connected to the transmission 32 by means of a shaft 33 which in the housing of the Throughflow heater 10 is guided.
  • the engine 30 and the transmission 32 are by a on protected a raised edge 17 of the water heater 10 seated lid 18.
  • the cover 18 also has bearings for the transmission 32, of which only a raised bearing pin 19 is shown as a bearing for the shaft 33.
  • the motor 31 continues to rotate, whereby upon rotation of the rotary valve 21 in the exemplary embodiment 180 °, the closed region 22 on the output port 14 sealingly rests. This will be the supply to the upper spray 5 interrupted and opened the supply to the lower spray 6.
  • the motor 31 is now again the closed Area 22 to rest on the output port 15 and the process is as vorildert continued.
  • the duration of the opening and closing times of the individual feeders to the sprayers 5, 6 is direct at this type of drive the reversing device depending on the selected speed of the motor 31 and the interpretation of the transmission 32.
  • the speed of the circulation pump 7 is reduced, i. E. their intake capacity reduced, so that the described noise can not occur because the Suction of the circulation pump 7 is reduced so far that a vacuuming of the Intake space of the circulation pump 7 does not occur.
  • the arrangement of the reversing device 20 to the water heater 10, it is with The invention has succeeded in a domestic dishwasher 1 with one at one Constricting location arranged Um Kunststoff 20 for charging sprayers 5, 6 to create.
  • Um Kunststoff 20 for charging sprayers 5, 6 to create.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Cleaning In General (AREA)

Abstract

A household dishwasher, includes a dishwashing compartment, a circulating pump for delivering liquid to the dishwashing compartment, a flow heater having an inflow connection fluidically connected to the circulating pump and at least two outlet connections, spray devices disposed in the dishwashing compartment and fluidically connected to outlet connections for supplying the liquid to each of the spray devices, and a changeover device for selectively opening and closing the spray devices. The spray devices subject items disposed in the dishwashing compartment and to be cleaned to an action of a liquid delivered by the circulating pump. The changeover device is disposed in a non-restricting location at the flow heater upstream of the outlet connections with respect to a liquid flow direction and opens and/or closes one of the outlet connections or a number of outlet connections or all the outlet connections are alternately one after the other and/or on a permanent basis. A method is also provided.

Description

Die Erfindung betrifft eine Haushalt-Geschirrspülmaschine mit einem Spülbehälter mit wenigstens zwei Sprüheinrichtungen, die in dem Spülbehälter angeordnetes, zu reinigendes Gut mittels einer von einer Umwälzpumpe geförderten Flüssigkeit beaufschlagen.The invention relates to a domestic dishwasher with a washing container with at least two sprayers arranged in the rinse tank to be cleaned Apply well by means of a liquid pumped by a circulation pump.

Eine Haushalt-Geschirrspülmaschine der eingangs genannten Art ist z.B. aus der DE-OS 24 28 991 bekannt. Bei handelsüblichen Haushalt-Geschirrspülmaschinen werden die wenigstens zwei Sprüheinrichtungen gleichzeitig mit der von einer Umwälzpumpe geförderten Flüssigkeit beschickt. Bei der Haushalt-Geschirrspülmaschine nach der DE-OS 24 28 991 wird aber zur Erzielung eines gleichen oder besseren Reinigungsergebnisses wie bei den vorgeschilderten handelsüblichen Haushalt-Geschirrspülmaschinen jede Sprüheinrichtung wechselnd nacheinander mit der von einer Umwälzpumpe geförderten Flüssigkeit beschickt, um so den vollen Druck der Umwälzpumpe nur an einer Sprüheinrichtung wirken zu lassen und eine geringere Flüssigkeitsmenge und geringere Energie zum Umwälzen und auch zum Erwärmen der umgewälzten Flüssigkeit zu benötigen. Zur Durchführung eines derartigen Verfahrens der wechselweisen Beschickung der Sprüheinrichtungen werden Umsteuereinrichtungen, üblicherweise sogenannte Wasserweichen, verwendet.A domestic dishwasher of the type mentioned above is e.g. from the DE-OS 24 28 991 known. In commercial household dishwashers The at least two sprayers are simultaneously with that of a circulating pump fed promoted liquid. At the household dishwasher according to DE-OS 24 28 991 but to achieve the same or better cleaning result as with the pre-marked commercial household dishwashers each spraying device alternately in succession with that of a Circulating pump fed liquid, so as to full the pressure of the circulation pump to act only on a spray and a smaller amount of liquid and lower energy for circulating and also for heating the to require circulating fluid. To carry out such a method the alternate loading of the spraying devices are reversing devices, usually so-called water points, used.

Aus der EP-OS 05 47 011 ist beispielsweise bekannt, mittels eines hydraulisch betätigten, zwischen Flüssigkeitszuleitungen zu den Sprüheinrichtungen angeordneten Klappenventils wechselweise eine der Flüssigkeitszuleitungen zu öffnen und gleichzeitig die anderen Flüssigkeitszuleitungen zu schließen, wobei diese Umsteuereinrichtung ein gesondertes Gehäuse besitzt und im Leitungszug der Flüssigkeitszuleitungen angeordnet ist.From EP-OS 05 47 011, for example, by means of a hydraulically actuated, arranged between liquid supply lines to the sprayers Flap valve alternately one of the fluid supply lines to open and at the same time to close the other fluid supply lines, this reversing device has a separate housing and arranged in the wiring of the liquid supply lines is.

Aus der EP-OS 02 37 994 ist weiterhin beispielsweise bekannt, mittels einer Kugel im Druckstutzen der Umwälzpumpe, die bei Unterbrechung des Betriebes der Umwälzpumpe die Lage ändert, wechselweise eine der Flüssigkeitszuleitungen zu öffnen und die andere gleichzeitig zu schließen. From EP-OS 02 37 994 is further known, for example, by means of a ball in the Discharge port of the circulation pump, which in case of interruption of the operation of the circulation pump the situation changes, alternately one of the fluid supply lines to open and to close the other at the same time.

Ferner ist beispielsweise aus dem EP-PS 05 85 905 bekannt, mittels einer motorisch angetriebenen, sich drehenden horizontalen Scheibe mit Bohrungen einen oder mehrere Zugänge zu Flüssigkeitszuleitungen zu öffnen und andere zu schließen, wobei diese Umsteuereinrichtung ein gesondertes Gehäuse besitzt und im Leitungszug der Flüssigkeitszuleitungen angeordnet ist.Furthermore, for example, from EP-PS 05 85 905 known by means of a motor driven, rotating horizontal disc with holes one or more Accesses to liquid supply lines to open and close others, where this reversing device has a separate housing and in the cable of the Liquid supply lines is arranged.

Die vorgenannten Lösungen der Umsteuereinrichtungen sind an schwer zugänglichen Stellen der Haushalt-Geschirrspülmaschine angeordnet und damit schwer zu montieren und/oder benötigen ein gesondertes Gehäuse, das an einer, die bei einer Haushalt-Geschirrspülmaschine ohnehin beengten Platzverhältnisse, zusätzlich beengenden Stelle der Haushalt-Geschirrspülmaschine, z.B. im Zuge der Flüssigkeitszuleitungen, angeordnet werden muß.The aforementioned solutions of the reversers are difficult to access Make the household dishwasher arranged and thus difficult to assemble and / or require a separate enclosure that attaches to one that is at a household dishwasher anyway cramped space, additionally restrictive Place the domestic dishwasher, e.g. in the course of the liquid supply lines, must be arranged.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Haushalt-Geschirrspülmaschine der eingangs genannten Art mit einer an einer nicht beengenden Stelle angeordneten Umsteuereinrichtung zur Beschickung von Sprüheinrichtungen zu schaffen.The invention is therefore based on the object, a household dishwasher of the type mentioned above arranged with a non-restrictive location To create Umsteuereinrichtung for feeding sprayers.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die geförderte Flüssigkeit von der Umwälzpumpe zu einem Zulaufstutzen eines Durchlauferhitzers und durch den Durchlauferhitzer geleitet wird, wobei der Durchlauferhitzer wenigstens zwei Ausgangsstutzen zur Zuleitung der Flüssigkeit zu jeweils unterschiedlichen Sprüheinrichtungen aufweist, die mittels einer am Durchlauferhitzer, in Strömungsrichtung vor den Ausgangsstutzen angeordneten Umsteuereinrichtung derart geöffnet bzw. geschlossen werden können, daß entweder jeweils einer der Ausgangsstutzen oder eine Anzahl von Ausgangsstutzen oder alle Ausgangsstutzen abwechselnd nacheinander und/oder ständig geöffnet bzw. geschlossen sind.This object is achieved in that the funded liquid from the circulation pump to a supply port of a water heater and through the Flow heater is passed, the water heater at least two outlet nozzle for supplying the liquid to each different spray devices having, by means of a water heater, in the flow direction before the Outlet arranged arranged Umsteuereinrichtung opened or closed can be that either one of the output nozzle or a number from outlet ports or all outlet ports alternately one after the other and / or are constantly open or closed.

Dadurch, daß die Umsteuereinrichtung direkt am Ausgang des ohnehin vorhandenen Durchlauferhitzers praktisch in der Verlängerung des Ausgangsstutzens angeordnet ist, ist die Umsteuereinrichtung an einer gut zugänglichen und nicht beengenden Stelle der Haushalt-Geschirrspülmaschine angeordnet und damit leicht montierbar. Mit der Erfindung ist es gelungen, eine Haushalt-Geschirrspülmaschine der eingangs genannten Art mit einer an einer nicht beengenden Stelle angeordneten Umsteuereinrichtung zur Beschickung von Sprüheinrichtungen zu schaffen. Durch die Anordnung mehrerer Ausgangsstutzen und deren wechselseitigen als auch ständigen alternativen Öffnung bzw. Schließung mittels der Umsteuereinrichtung ist weiterhin ein sehr einfacher Aufbau der Umsteuereinrichtung möglich.The fact that the reversing device directly at the output of the already existing Throughflow heater practically arranged in the extension of the outlet nozzle is the reversing device in an easily accessible and non-restrictive place arranged the domestic dishwasher and thus easy to install. With the Invention has succeeded in a domestic dishwasher of the aforementioned Type with a arranged at a non-restrictive location reversing device to provide for the loading of sprayers. By the arrangement several outlet ports and their mutual as well as permanent alternatives Opening or closing by means of the reversing device is still a very simple Structure of the reversing device possible.

Zweckmäßigerweise entspricht die Anzahl der Ausgangsstutzen des Durchlauferhitzers der Anzahl der Sprüheinrichtungen oder gleichzeitig betriebener Gruppen von Sprüheinrichtungen.Appropriately, the number of outlet ports of the water heater corresponds the number of sprayers or simultaneously operated groups of sprayers.

Nach einer bevorzugten Ausführungsform der Erfindung weist der Durchlauferhitzer zwei Ausgangsstutzen auf.According to a preferred embodiment of the invention, the water heater has two Outlet port on.

Nach einem bevorzugten Merkmal der Erfindung kann eine jedem Ausgangsstutzen vorgelagerte Ausgangsöffnung des Durchlauferhitzers mittels eines in Strömungsrichtung vor den Ausgangsöffnungen angeordneten Drehschiebers der Umsteuereinrichtung verschlossen werden. Die eingangs beschriebenen, bekannten Umsteuereinrichtungen weisen auch den Nachteil auf, daß sie kompliziert aufgebaut und daher leicht störungsanfällig sind. Dieser Nachteil wird mit dem bevorzugten Merkmal der Erfindung überwunden, da auch z.B. Verschmutzungsablagerungen eine Schließfunktion des Drehschiebers nicht stören können, da sie von dem sich drehenden Drehschieber weggeschoben werden.According to a preferred feature of the invention, one upstream of each outlet port Outlet opening of the water heater by means of a flow direction closed before the exit openings arranged rotary valve of the reversing device become. The known reversing devices described at the beginning have also the disadvantage that they are complicated and therefore easily susceptible to failure are. This disadvantage is overcome with the preferred feature of the invention, since also e.g. Dirt deposits not a closing function of the rotary valve can be disturbed, as they are pushed away from the rotating rotary valve.

Nach einer bevorzugten Ausführungsform der Erfindung weist der Drehschieber wenigstens einen geschlossenen Bereich und wenigstens einen durch eine Bohrung offenen Bereich auf, wodurch eine einfache Herstellung des Drehschiebers erreicht wird.According to a preferred embodiment of the invention, the rotary valve at least a closed area and at least one open through a bore Range, whereby a simple manufacture of the rotary valve is achieved.

Nach einer weiteren bevorzugten Ausführungsform der Erfindung weist der Drehschieber in Umlaufrichtung jeweils abwechselnd nach einem offenen Bereich einen geschlossenen Bereich auf, zwischen denen ein unausgefüllter Abstand besteht wodurch eine weitere Vereinfachung der Herstellung des Drehschiebers und eine einfache Steuerung des Umlaufes des Drehschiebers erreicht wird.According to a further preferred embodiment of the invention, the rotary valve in the direction of rotation in each case alternately after an open area a closed Area between which there is an unfilled space causing another Simplifying the manufacture of the rotary valve and easy control of the circulation the rotary valve is reached.

Nach einer weiteren bevorzugten Ausführungsform der Erfindung wird der Drehschieber mittels einer Antriebseinrichtung in wenigstens eine Stellung gebracht, in der der wenigstens eine geschlossene Bereich oder eine Anzahl von geschlossenen Bereichen die wenigstens eine Ausgangsöffnung oder eine Anzahl von Ausgangsöffnungen verschließt und/oder in der sämtliche Ausgangsöffnungen geöffnet sind. Damit ist der Drehschieber für alle möglichen Beschickungsarten der Sprüheinrichtungen verwendbar.According to a further preferred embodiment of the invention, the rotary valve brought by means of a drive device in at least one position in which the at least a closed area or a number of closed areas which at least closes an exit port or a number of exit ports and / or in which all the exit openings are opened. This is the rotary valve suitable for all kinds of feeding of sprayers.

Vorteilhafterweise weist der Drehschieber die Form eines Propellerflügels mit zwei sich gegenüberliegenden Bereichen auf, der mittels der Antriebseinrichtung in eine Stellung gebracht wird, in der der geschlossene Bereich eine Ausgangsöffnung verschließt und der offene Bereich die jeweils andere Ausgangsöffnung geöffnet hält. Dies ist die einfachste Steuerung für den einfachsten Fall bei einer Haushalt-Geschirrspülmaschine mit der wechselweisen Beschickung der Sprüheinrichtungen, nämlich mit zwei Sprüheinrichtungen.Advantageously, the rotary valve has the shape of a propeller blade with two opposite areas, by means of the drive means in a position is brought, in which the closed area closes an outlet opening and the open area keeps the other outlet opening open. This is the simplest Control for the simplest case with a domestic dishwasher with the alternate loading of the spray, namely with two sprayers.

In besonders vorteilhafter Weise weist der Drehschieber auf den Bereichen umlaufende, in Einbaulage in Richtung auf die Ausgangsöffnungen hochragende Rippen auf, die einen halbkreisförmigen Querschnitt aufweisen. Mit dieser Maßnahme wird eine gute eine Ausgangsöffnung umgebende Anlage des Drehschiebers auf der Innenwand des Druchlauferhitzers und damit eine gute Abdichtung der zu verschließenden Ausgangsöffnung erreicht.In a particularly advantageous manner, the rotary valve on the areas circumferential, in installation position in the direction of the outlet openings towering ribs, the one have semicircular cross-section. With this measure, a good is an outlet opening surrounding system of the rotary valve on the inner wall of the Druchlauferhitzers and thus achieved a good seal of the outlet opening to be closed.

Nach einer vorteilhaften Ausführungsform der bevorzugten Ausführungsform der Ertindung ist die Antriebseinrichtung ein Motor mit Getriebe. Ein Motor mit Getriebe ist eine für den kontinuierlichen Wechsel in der Beschickung der Sprüheinrichtungen ebenso wie für einen zeitlich längeren Wechsel oder für eine ständige Öffnung eines oder mehrerer Zuführleitungen zu den Sprüheinrichtungen äußerst einfach steuerbare Antriebseinheit der Umsteuereinrichtung, womit eine weitere Vereinfachung der Umsteuereinrichtung erzielt wurde.According to an advantageous embodiment of the preferred embodiment of the invention the drive device is a motor with gearbox. An engine with transmission is one for the continuous change in the loading of the spray as well as for a longer time change or for a permanent opening of one or more supply lines to the sprayers extremely simple controllable drive unit of Umsteuereinrichtung, whereby a further simplification of the reversing device achieved has been.

Wie eingangs beschrieben, wird eine kontinuierliche, wechselweise Beschickung der Sprüheinrichtungen insbesondere zur Einsparung von Wasser eingesetzt. Bei geringerer Einfüllmenge kommt es aber, auch bei kurzzeitigem Betrieb beider Sprüheinrichtungen, zu einem schnellen Leerpumpen der Ansaugkammer der Umwälzpumpe, was dann aufgrund der Ansaugung von Luft zu einer unangenehmen und unerwünschten Geräuschentwicklung der Umwälzpumpe führt. Um diesem vorzubeugen, wird in besonders vorteilhafter Weise bei einer kontinuierlichen, wechselweisen Beschickung der Sprüheinrichtungen in den Zeiträumen in denen beide Ausgangsöffnungen geöffnet sind, die Drehzahl der Umwälzpumpe verringert. Die beschriebene Geräuschentwicklung aufgrund der Ansaugung von Luft kann mit dieser Maßnahme nicht eintreten, da die Ansaugleistung der Umwälzpumpe soweit herabgesetzt wird, daß ein Leersaugen des Ansaugraumes der Umwälzpumpe nicht eintritt.As described above, a continuous, alternating charge of the Spraying used in particular to save water. At lesser Filling but it comes, even with short-term operation of both sprayers, to a fast emptying of the suction chamber of the circulation pump, which then due the intake of air to an unpleasant and unwanted noise the circulation pump leads. To prevent this, will be in particular Advantageously, in a continuous, alternating loading of the spray in the periods in which both exit ports are open, the Reduced speed of the circulation pump. The described noise due to the intake of air can not occur with this measure, since the intake the circulating pump is reduced so far that a vacuuming of the suction the circulating pump does not enter.

Die Erfindung wird nachstehend anhand dem in der Zeichnung dargestellten Ausführungsbeispiel erläutert. Es zeigen

Fig. 1
eine erfindungsgemäße Haushalt-Geschirrspülmaschine in einer schematischer Darstellung,
Fig. 2
eine Schnittdarstellung der Seitenansicht eines Durchlauferhitzers mit der erfindungsgemäßen Umsteuereinrichtung,
Fig. 3
eine Schnittdarstellung der Draufsicht des Durchlauferhitzers mit der erfindungsgemäßen Umsteuereinrichtung entsprechend den Schnittlinien III-III in Fig. 2 und
Fig. 4
eine vergrößerte Darstellung eines Teils der erfindungsgemäßen Umsteuereinrichtung entsprechend der Einzelheit IV in Fig. 2.
The invention will be explained below with reference to the embodiment shown in the drawing. Show it
Fig. 1
a domestic dishwasher according to the invention in a schematic representation,
Fig. 2
a sectional view of the side view of a water heater with the reversing device according to the invention,
Fig. 3
a sectional view of the top view of the water heater with the reversing device according to the invention according to the section lines III-III in Fig. 2 and
Fig. 4
an enlarged view of a portion of the reversing device according to the invention according to the detail IV in Fig. 2nd

Eine erfindungsgemäße Haushalt-Geschirrspülmaschine 1 weist einen Spülbehälter 2 auf, in den nicht dargestelltes, zu reinigendes Gut, z.B. verschmutztes Geschirr und Besteck, üblicherweise in Geschirrkörbe 3, 4 eingefüllt wird. In dem Spülbehälter 2 sind erfindungsgemäß wenigstens zwei Sprüheinrichtungen, in den gezeigten Ausführungsbeispielen zwei Sprüheinrichtungen 5, 6 angeordnet, die das in dem Spülbehälter 2 angeordnete, zu reinigende Gut mit Flüssigkeit beaufschlagen. Diese Flüssigkeit, üblicherweise Spülflotte genannt, wird mittels einer Umwälzpumpe 7 in Flüssigkeitszuleitungen 8, 9 zu den Sprüheinrichtungen 5, 6 gefördert. Üblicherweise wird die in Haushalt-Geschirrspülmaschinen 1 geförderte Flüssigkeit zumindest in einem Teilprogrammabschnitt eines Spülprogrammes erwärmt, wozu die erfindungsgemäße Haushalt-Geschirrspülmaschine 1 einen Durchlauferhitzer 10 aufweist. Die in der erfindungsgemäßen Haushalt-Geschirrspülmaschine 1 geförderte Flüssigkeit wird von der Umwälzpumpe 7 zu einem Zulaufstutzen 11 des Durchlauferhitzers 10 und durch den Durchlauferhitzer 10 geleitet. Erfindungsgemäß weist der Durchlauferhitzer 10 wenigstens zwei Ausgangsstutzen, nämlich eine der Anzahl der Sprüheinrichtungen oder gleichzeitig betriebener Gruppen von Sprüheinrichtungen entsprechende Anzahl von Ausgangsstutzen, in den gezeigten Ausführungsbeispielen zwei Ausgangsstutzen 12, 13 auf. Von den Ausgangsstutzen 12, 13 des Durchlauferhitzers 10 wird die Flüssigkeit über die schon erwähnten Flüssigkeitszuleitungen 8, 9 den jeweils unterschiedlichen Sprüheinrichtungen 5, 6 zugeleitet. Die zur Erwärmung der Flüssigkeit in dem Durchlauferhitzer 10 notwendigen Heizstäbe sind mit 16 bezeichnet.A household dishwasher 1 according to the invention has a washing container 2 on, in the not shown, to be cleaned Good, e.g. dirty dishes and cutlery, Usually in baskets 3, 4 is filled. In the washing container 2 are according to the invention at least two sprayers, in the embodiments shown two sprayers 5, 6 are arranged, which arranged in the washing container 2, apply liquid to the material to be cleaned. This liquid, usually Rinsing called, is by means of a circulating pump 7 in liquid supply lines 8, 9 promoted to the sprayers 5, 6. Usually, the in domestic dishwashers 1 conveyed liquid at least in a part program section heated a wash program, including the inventive household dishwasher 1 has a water heater 10. The in the inventive Household Dishwasher 1 conveyed liquid is from the circulation pump 7 to an inlet nozzle 11 of the water heater 10 and through the water heater 10 headed. According to the invention, the instantaneous water heater 10 has at least two outlet ports, namely one of the number of sprayers or simultaneously operated Groups of sprayers corresponding number of outlet nozzles, in the shown embodiments, two outlet ports 12, 13. From the outlet neck 12, 13 of the water heater 10, the liquid over the already mentioned Liquid supply lines 8, 9 the respective different spray means 5, 6 fed. The necessary for heating the liquid in the water heater 10 heating rods are designated 16.

Erfindungsgemäß können die Ausgangsstutzen 12, 13 mittels einer am Durchlauferhitzer 10, in Strömungsrichtung vor den Ausgangsstutzen 12, 13 angeordneten Umsteuereinrichtung 20 derart geöffnet bzw. geschlossen werden, daß entweder jeweils einer der Ausgangsstutzen 12, 13 oder eine Anzahl von Ausgangsstutzen 12, 13 oder alle Ausgangsstutzen 12, 13 abwechselnd nacheinander und/oder ständig geöffnet bzw. geschlossen sind. Bei dem gezeigten Ausführungsbeispiel können die zwei Ausgangsstutzen 12, 13 des Durchlauferhitzers 10 mittels der Umsteuereinrichtung 20 derart geöffnet bzw. geschlossen werden, daß entweder jeweils einer der Ausgangsstutzen 12, 13 oder beide Ausgangsstutzen 12, 13 abwechselnd nacheinander und/oder ständig geöffnet bzw. geschlossen sind. Hierzu ist ein Drehschieber 21 der Umsteuereinrichtung 20 in Strömungsrichtung vor jedem Ausgangsstutzen 12, 13 vorgelagerten Ausgangsöffnungen 14, 15 des Durchlauferhitzers 10 angeordnet, durch den jeweils eine der Ausgangsöffnungen 14, 15 des Durchlauferhitzers 10 verschlossen werden kann. Die eingangs beschriebenen, bekannten Umsteuereinrichtungen weisen auch den Nachteil auf, daß sie kompliziert aufgebaut und daher leicht störungsanfällig sind. Dieser Nachteil wird mit dem Drehschieber 21 überwunden, da auch z.B. Verschmutzungsablagerungen eine Schließfunktion des Drehschiebers 21 nicht stören können, da sie von dem sich drehenden Drehschieber 21 weggeschoben werden. Der Drehschieber 21 weist die Form eines Propellerflügels mit zwei sich gegenüberliegenden Bereichen 22, 23 auf, wobei der Drehschieber 21 einen geschlossenen Bereich 22 und einen durch eine Bohrung offenen Bereich 23 aufweist. Erfindungsgemäß wird der Drehschieber 21 mittels einer Antriebseinrichtung 30 in wenigstens eine Stellung gebracht, in der der wenigstens eine geschlossene Bereich 22 oder eine Anzahl von geschlossenen Bereichen 22 die wenigstens eine Ausgangsöffnung 14, 15 oder eine Anzahl von Ausgangsöffnungen 14, 15 verschlossen und/oder in der sämtliche Ausgangsöffnungen 14, 15 geöffnet sind. Bei dem gezeigten Ausführungsbeispiel weist der Drehschieber 21 zwei sich gegenüberliegenden Bereiche 22, 23 auf, einen geschlossenen Bereich 22 und einen offenen Bereich 23. Der Drehschieber 21 wird mittels der Antriebseinrichtung 30 in eine Stellung gebracht, in der der geschlossene Bereich 22 eine Ausgangsöffnung 15 verschließt und der offene Bereich 23 die andere Ausgangsöffnung 14 geöffnet hält. In Fig. 2 ist eine derartige Stellung dargestellt. Wie in Fig. 4 am besten zu erkennen ist weist der Drehschieber 21 auf den Bereichen 22, 23 umlaufende, in Einbaulage in Richtung auf die Ausgangsöffnungen 14, 15 hochragende Rippen 24, 25 auf, die einen halbkreisförmigen Querschnitt aufweisen und zur besseren Anlage des Drehschiebers 21 auf der Innenwand des Druchlauferhitzers 10 dienen. Die Antriebseinheit 30 ist ein Motor 31, z.B. ein Elektromotor, mit einem in Fig. 2 nur schematisch dargestellten Getriebe 32, z.B. einem Zahnradgetriebe. Der Drehschieber 21 ist mit dem Getriebe 32 mittels einer Welle 33 verbunden, die im Gehäuse des Durchlauferhitzers 10 geführt ist. Der Motor 30 und das Getriebe 32 sind durch einen auf einem hochgezogenen Rand 17 des Durchlauferhitzers 10 sitzenden Deckel 18 geschützt. Der Deckel 18 weist auch Lagerstellen für das Getriebe 32 auf, von denen nur ein hochgezogener Lagerzapfen 19 als Lager für die Welle 33 gezeigt ist.According to the invention, the outlet ports 12, 13 by means of a water heater 10, in the flow direction in front of the outlet nozzle 12, 13 arranged reversing device 20 are opened or closed so that either one of the Outlet ports 12, 13 or a number of outlet ports 12, 13 or all outlet ports 12, 13 alternately one after the other and / or constantly open or closed are. In the embodiment shown, the two outlet ports 12, 13 of the water heater 10 by means of the reversing device 20 so opened or be closed, that either one of the output nozzle 12, 13 or both outlet ports 12, 13 alternately one after the other and / or constantly open or are closed. For this purpose, a rotary valve 21 of the reversing device 20 in Flow direction in front of each outlet nozzle 12, 13 upstream outlet openings 14, 15 of the flow heater 10, through which in each case one of the outlet openings 14, 15 of the water heater 10 can be closed. The initially described, known reversing devices also have the disadvantage that they complicated structure and therefore are easily prone to failure. This disadvantage is with the Rotary valve 21 overcome, as well as e.g. Contamination deposits a closing function of the rotary valve 21 can not disturb, as they are of the rotating Rotary valve 21 are pushed away. The rotary valve 21 has the shape of a propeller blade with two opposing areas 22, 23, wherein the rotary valve 21 a closed area 22 and an open area through a bore 23 has. According to the invention, the rotary valve 21 by means of a drive device 30 brought into at least one position in which the at least one closed Area 22 or a number of closed areas 22 which at least one Exit port 14, 15 or a number of outlet openings 14, 15 closed and / or in which all the outlet openings 14, 15 are opened. In the shown Embodiment, the rotary valve 21 has two opposing areas 22, 23, a closed area 22 and an open area 23. The rotary valve 21 is brought by means of the drive means 30 in a position in which the closed area 22 closes an exit opening 15 and the open area 23 the other outlet opening 14 keeps open. In Fig. 2 such a position is shown. As best seen in Fig. 4, the rotary valve 21 on the areas 22, 23 encircling, in installation position in the direction of the outlet openings 14, 15th upstanding ribs 24, 25 which have a semicircular cross-section and for better installation of the rotary valve 21 on the inner wall of the Druchlauferhitzers 10th serve. The drive unit 30 is a motor 31, e.g. an electric motor, with a in Fig. 2 only schematically illustrated transmissions 32, e.g. a gear transmission. The rotary valve 21 is connected to the transmission 32 by means of a shaft 33 which in the housing of the Throughflow heater 10 is guided. The engine 30 and the transmission 32 are by a on protected a raised edge 17 of the water heater 10 seated lid 18. The cover 18 also has bearings for the transmission 32, of which only a raised bearing pin 19 is shown as a bearing for the shaft 33.

Im folgenden wird die Funktion der erfindungsgemäßen Umsteuereinrichtung 20 an dem gezeigten Ausführungsbeispiel erläutert. Wenn eine kontinuierliche, wechselweise Beschickung der Sprüheinrichtungen 5, 6 gewünscht wird, so wird der Anschluß des Motors 31 der Antriebseinrichtung 30 an die Versorgungsspannung von einem nicht näher erläuterten Programmsteuergerät der Haushalt-Geschirrspülmaschine 1 eingeleitet und der Drehschieber 21 beginnt sich zu drehen. Dadurch wird der geschlossene Bereich 22 des Drehschiebers 21 so lange gedreht, bis dieser auf einer der Ausgangsöffnungen 14, 15, in Fig. 2 auf der Ausgangsöffnung 15, dichtend aufliegt. Damit wird die Zuführung der durch den Durchlauferhitzer 10 strömenden Flüssigkeit in diesem Fall zu der unteren Sprüheinrichtung 6 unterbrochen und die Zuführung zu der oberen Sprüheinrichtung 5 geöffnet. Bei der kontinuierlichen, wechselweisen Beschickung der Sprüheinrichtungen 5, 6 dreht der Motor 31 kontinuierlich weiter, wodurch nach einer Drehung des Drehschiebers 21 um im Ausführungsbeispiel 180° der geschlossene Bereich 22 auf der Ausgangsöffnung 14 dichtend aufliegt. Damit wird die Zuführung zu der oberen Sprüheinrichtung 5 unterbrochen und die Zuführung zu der unteren Sprüheinrichtung 6 geöffnet. Beim kontinuierlichen Weiterdrehen des Motors 31 kommt nun wieder der geschlossene Bereich 22 zur Anlage auf der Ausgangsöffnung 15 und der Vorgang setzt sich wie vorgeschildert fort. Die Dauer der Öffnungs- bzw. Schließzeiten der einzelnen Zuführungen zu den Sprüheinrichtungen 5, 6 ist bei dieser Antriebsart der Umsteuereinrichtung direkt abhängig von der gewählten Drehzahl des Motors 31 bzw. der Auslegung des Getriebes 32. Da der Drehschieber 21 in Umlaufrichtung jeweils abwechselnd nach einem offenen Bereich 23 einen geschlossenen Bereich 22 aufweist, zwischen denen ein unausgefüllter Abstand besteht, kommt, wie in Fig. 3 deutlich zu erkennen ist, der Drehschieber 21 bei seiner Drehung in eine Lage in der beide Ausgangsöffnungen 14, 15 geöffnet sind, wobei die Lage der in dieser Ansicht nicht sichtbaren Ausgangsöffnungen 14, 15 mit strichpunktierten Linien angedeutet ist. Dies bedeutet, daß für eine, abhängig von der Drehzahl des Drehschiebers 21, relativ kurze Zeitdauer die Zuführung der durch den Durchlauferhitzer 10 strömenden Flüssigkeit zu beiden Sprüheinrichtungen 5, 6 stattfindet. Wie eingangs beschrieben, wird eine kontinuierliche, wechselweise Beschickung der Sprüheinrichtungen 5, 6 insbesondere zur Einsparung von Wasser eingesetzt. Bei der gewählten geringeren Einfüllmenge kommt es aber bei Betrieb beider Sprüheinrichtungen5, 6, auch bei kurzzeitigem Betrieb beider Sprüheinrichtungen 5, 6, zu einem schnellen Leerpumpen der Ansaugkammer der Umwälzpumpe 7, was dann aufgrund der Ansaugung von Luft zu einer unangenehmen und unerwünschten Geräuschentwicklung der Umwälzpumpe 7 führt. Um diesem vorzubeugen, wird in den Zeiträumen in denen beide Ausgangsöffnungen 14, 15 geöffnet sind, die Drehzahl der Umwälzpumpe 7 verringert, d.h. deren Ansaugleistung verringert, so daß die beschriebene Geräuschentwicklung nicht eintreten kann, da die Ansaugleistung der Umwälzpumpe 7 soweit herabgesetzt wird, daß ein Leersaugen des Ansaugraumes der Umwälzpumpe 7 nicht eintritt.In the following, the function of the reversing device 20 according to the invention at the illustrated embodiment explained. If a continuous, alternate loading the sprayers 5, 6 is desired, then the connection of the engine 31 of the drive device 30 to the supply voltage of an unspecified explained Program control unit of the household dishwasher 1 initiated and the Rotary valve 21 begins to turn. Thereby, the closed area 22 of the Rotary valve 21 is rotated until it is on one of the outlet openings 14, 15, in Fig. 2 on the outlet opening 15, sealingly rests. Thus, the supply of the through the water heater 10 flowing liquid in this case to the lower Sprayer 6 interrupted and the supply to the upper spray 5 open. In the continuous, alternating feeding of the spray 5, 6, the motor 31 continues to rotate, whereby upon rotation of the rotary valve 21 in the exemplary embodiment 180 °, the closed region 22 on the output port 14 sealingly rests. This will be the supply to the upper spray 5 interrupted and opened the supply to the lower spray 6. During continuous rotation of the motor 31 is now again the closed Area 22 to rest on the output port 15 and the process is as vorildert continued. The duration of the opening and closing times of the individual feeders to the sprayers 5, 6 is direct at this type of drive the reversing device depending on the selected speed of the motor 31 and the interpretation of the transmission 32. Since the rotary valve 21 in the direction of rotation in each case alternately after an open Area 23 has a closed area 22, between which an unfilled Distance is, comes, as can be clearly seen in Fig. 3, the rotary valve 21 at its rotation in a position in which both outlet openings 14, 15 are opened, wherein the position of the not visible in this view output openings 14, 15 with dash-dotted lines Lines is indicated. This means that for one, depending on the speed of the Rotary valve 21, relatively short period of time, the supply of the through-flow heater 10 flowing liquid to both sprayers 5, 6 takes place. As at the beginning described, is a continuous, alternating charging the sprayers 5, 6 used in particular for the conservation of water. At the chosen lower Filling but it comes in operation of both sprayers5, 6, also at short-term operation of both sprayers 5, 6, to a fast emptying the Suction chamber of the circulation pump 7, which then due to the suction of air to a unpleasant and unwanted noise of the circulation pump 7 leads. To prevent this, in the periods in which both output ports 14, 15 are opened, the speed of the circulation pump 7 is reduced, i. E. their intake capacity reduced, so that the described noise can not occur because the Suction of the circulation pump 7 is reduced so far that a vacuuming of the Intake space of the circulation pump 7 does not occur.

Wenn aber eine kontinuierliche, wechselweise Beschickung der Sprüheinrichtungen 5, 6 gewünscht wird, bei der die Beschickung der einzelnen Sprüheinrichtungen 5, 6 länger als über die mit dem vorbeschriebenen Verfahren dauern soll, so wird mittels einer nicht näher beschriebenen Sensorik die Drehlage des Drehschiebers 21 festgestellt und über das Programmsteuergerät für eine vorgegebene Dauer der Motor 31 abgeschaltet, so daß die jeweilige Drehlage des Drehschiebers 21 über diese Dauer gehalten wird.But if a continuous, alternating loading of the spray 5, 6 is desired, in which the feed of the individual sprayers 5, 6 longer than about to last with the method described above, it is not by means of a Sensor described in more detail the rotational position of the rotary valve 21 and over the program control device for a predetermined duration of the motor 31 is turned off, so that the respective rotational position of the rotary valve 21 is held over this duration.

Wird aber eine ständige Öffnung nur der Zuführung z.B. zu der oberen Sprüheinrichtung 5 gewünscht - ein sogenanntes Oberkorbspülen, so wird die vorbeschriebene Sensorik dazu benutzt, den Motor 31 nur so lange zu betreiben, bis die Stellung der Öffnung der Ausgangsöffnung 14 für den Ausgangsstutzen 12 zu der Flüßigkeitszuleitung 8 zu der oberen Sprüheinrichtung 5 erreicht ist und dann über das komplette Spülprogramm diese Stellung einzubehalten, da der Motor 31 nicht mehr weiter betrieben wird. But if a permanent opening only the feeder e.g. to the upper sprayer 5 desired - a so-called upper basket rinsing, so is the above-described sensors used to operate the engine 31 only until the position of the opening of the Exit opening 14 for the outlet nozzle 12 to the Flüßigkeitszuleitung 8 to the top sprayer 5 is reached and then over the complete wash program this Retain position, since the engine 31 is no longer operated.

Wird letztlich der ununterbrochene Betrieb beider Sprüheinrichtungen gewünscht, so läßt sich wieder mittels der vorbeschriebenen Sensorik die Zwischenstellung der Öffnung beider Ausgangsöffnungen 14, 15 feststellen und diese Stellung über das komplette Spülprogramm beibehalten, da der Motor 31 nicht mehr weiter betrieben wird (siehe Fig. 3). Die Füllmenge mit Spülflüssigkeit wird entsprechend erhöht.If ultimately the uninterrupted operation of both sprayers desired, so lets again by means of the above-described sensors, the intermediate position of the opening of both Determine outlet openings 14, 15 and this position over the complete wash program maintained, since the motor 31 is no longer operated (see Fig. 3). The filling quantity with rinsing liquid is increased accordingly.

Durch die Anordnung der Umsteuereinrichtung 20 an dem Durchlauferhitzer 10 ist es mit der Erfindung gelungen, eine Haushalt-Geschirrspülmaschine 1 mit einer an einer nicht beengenden Stelle angeordneten Umsteuereinrichtung 20 zur Beschickung von Sprüheinrichtungen 5, 6 zu schaffen. Durch die Anordnung mehrerer Ausgangsstutzen 12, 13 an dem Durchlauferhitzer 10 und deren wechselseitigen als auch ständigen alternativen Öffnung bzw. Schließung mittels der Umsteuereinrichtung 20 ist weiterhin ein sehr einfacher Aufbau der Umsteuereinrichtung 20 möglich.The arrangement of the reversing device 20 to the water heater 10, it is with The invention has succeeded in a domestic dishwasher 1 with one at one Constricting location arranged Umsteuereinrichtung 20 for charging sprayers 5, 6 to create. By arranging a plurality of outlet ports 12, 13 at the water heater 10 and their mutual as well as permanent alternative opening or closure by means of the reversing device 20 is still a very simple Structure of the reversing device 20 possible.

Claims (11)

  1. Household dishwashing machine (1) with a rinsing container (2) with at least two spray devices (5, 6) which act on articles, which are arranged in the rinsing container and are to be cleaned, by a liquid conveyed by a circulating pump (7), characterised in that the conveyed liquid is conducted by the circulating pump (7) to a feed stub pipe (11) of a throughflow heater (10) and through the throughflow heater (10), wherein the throughflow heater (10) has at least two outlet stub pipes (12, 13) for conducting the liquid to respectively different spray devices (5, 6), which can be opened or closed in such a manner by means of a changeover device (20) arranged at the throughflow heater (10) in front of the outlet stub pipes (12, 13) in flow direction that one of the outlet stub pipes (12, 13) or a number of outlet stub pipes (12, 13) or all outlet stub pipes (12, 13) is or are opened and closed alternately in succession and/or constantly.
  2. Household dishwashing machine according to claim 1, characterised in that the number of outlet stub pipes (12, 13) of the throughflow heater (10) corresponds with the number of spray devices (5, 6) or simultaneously operated groups of spray devices (5, 6).
  3. Household dishwashing machine according to claim 1 or 2, characterised in that the throughflow heater (10) has two outlet stub pipes (12, 13).
  4. Household dishwashing machine according to one of claims 1 to 3, characterised in that an outlet opening (14, 15), which is arranged upstream of each outlet stub pipe (12, 13), of the throughflow heater (10) can be closed by means of a rotary slide valve (21), which is arranged in front of the outlet openings (14, 15) in flow direction, of the changeover device (20).
  5. Household dishwashing machine according to claim 4, characterised in that the rotary slide valve (21) has at least one closed region (22) and at least one region (23) opened by a bore.
  6. Household dishwashing machine according to claim 4 or 5, characterised in that the rotary slide valve (21) has in rotational direction a respective closed region (22) alternating after each open region (23), a blank spacing being present between the closed regions.
  7. Household dishwashing machine according to one of claims 4 to 6, characterised in that the rotary slide valve (21) is brought by means of a drive device (30) into at least one setting in which the at least one closed region (22) or a number of closed regions (22), the at least one outlet opening (14, 15) or a number of outlet openings (14, 15) is or are closed and/or opened into all the outlet openings (14, 15).
  8. Household dishwashing machine according to one of claims 4 to 7, characterised in that the rotary slide valve (21) has the form of a propeller blade with two mutually opposite regions (22, 23) which are brought by means of the drive device (30) into a setting in which the closed region (22) closes an outlet opening (14, 15) and the open region (23) keeps open the respective other outlet opening.
  9. Household dishwashing machine according to one of claims 4 to 8, characterised in that the rotary slide valve (21) comprises ribs (24, 25) which extend around on the regions (22, 23), project up in the installed position in direction towards the outlet openings (14, 15) and have a semicircular cross-section.
  10. Household dishwashing machine according to one of claims 4 to 9, characterised in that the drive device (30) is a motor (31) with a transmission (32).
  11. Household dishwashing machine according to one of claims 1 to 10, characterised in that in the case of a continuous, alternating loading of the spray devices (5, 6) in the time periods in which both outlet openings (14, 15) are opened the rotational speed of the circulating pump (7) is reduced.
EP99966925A 1998-12-10 1999-12-07 Household dishwasher Expired - Lifetime EP1137362B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857103 1998-12-10
DE19857103A DE19857103A1 (en) 1998-12-10 1998-12-10 Household dishwasher
PCT/EP1999/009613 WO2000033720A2 (en) 1998-12-10 1999-12-07 Household dishwasher

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EP1137362A2 EP1137362A2 (en) 2001-10-04
EP1137362B1 true EP1137362B1 (en) 2003-04-23

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US (1) US6601593B2 (en)
EP (1) EP1137362B1 (en)
AT (1) ATE237986T1 (en)
DE (2) DE19857103A1 (en)
ES (1) ES2196913T3 (en)
TR (1) TR200101276T2 (en)
WO (1) WO2000033720A2 (en)

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Also Published As

Publication number Publication date
EP1137362A2 (en) 2001-10-04
DE59905236D1 (en) 2003-05-28
WO2000033720A3 (en) 2000-10-12
WO2000033720A2 (en) 2000-06-15
US6601593B2 (en) 2003-08-05
DE19857103A1 (en) 2000-06-15
ATE237986T1 (en) 2003-05-15
TR200101276T2 (en) 2001-10-22
US20020007843A1 (en) 2002-01-24
ES2196913T3 (en) 2003-12-16

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