EP0486828B1 - Arrangement for drying crockery in dishwashing machines - Google Patents

Arrangement for drying crockery in dishwashing machines Download PDF

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Publication number
EP0486828B1
EP0486828B1 EP91117986A EP91117986A EP0486828B1 EP 0486828 B1 EP0486828 B1 EP 0486828B1 EP 91117986 A EP91117986 A EP 91117986A EP 91117986 A EP91117986 A EP 91117986A EP 0486828 B1 EP0486828 B1 EP 0486828B1
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EP
European Patent Office
Prior art keywords
container
moist air
arrangement according
water inlet
fresh water
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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.)
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EP91117986A
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German (de)
French (fr)
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EP0486828A1 (en
Inventor
Ernst Dipl.-Ing. Stickel (Fh)
Rüdiger Dipl.-Ing. Eiermann
Helmut Dipl.-Ing. Jerg (Fh)
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BOSCH-SIEMENS HAUSGERAETE GMBH
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Individual
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/48—Drying arrangements
    • A47L15/483—Drying arrangements by using condensers

Definitions

  • the invention relates to an arrangement for drying dishes in household dishwashers according to the preamble of patent claim 1.
  • an arrangement for drying dishes in dishwashers having a washing container, a container arranged separately from the washing container, a blower for conveying moist air from the washing container through the one separate from the washing container arranged container is equipped back to the rinsing container, fresh water being introduced into the container arranged separately from the rinsing container.
  • moist air is drawn in from the washing container by means of the blower and passed through the container which is designed as a condenser and is arranged separately from the washing container.
  • Fresh water is introduced via a cooling water line, which is conducted in turns through the condenser, and emerges from the cooling water line in the flow direction at the end of the condenser in its outlet.
  • the moist air is cooled along the cooling water line, so that the moisture contained in the moist air condenses and is returned as condensate to the rinsing tank via the outlet of the condenser with the fresh water flowing out.
  • the cooled air also flows through the condenser outlet into the rinsing container and can now absorb moisture through the dishes and be directed to the condenser.
  • the fresh water is pumped through a drain hose into the sewer.
  • a disadvantage of the arrangement described above is the consumption of a large amount of fresh water solely for condensing the moisture contained in the moist air.
  • a dishwasher has become known from DD-A-51 687, in which, in order to avoid the above-described disadvantage, the moist air is passed through cold water filled into a heat-insulated chamber which is arranged separately from the washing container and which is filled in the next time the washing container is filled.
  • the moist air rises relatively quickly through the stored fresh water in the form of bubbles and is then led out of the container.
  • This has the disadvantage that only the surface of the air bubbles surrounded by fresh water is cooled only for a short time and sufficient cooling of the moist air is therefore not achieved, so that sufficient condensation of the moisture contained in the moist air cannot be achieved.
  • the discharged air is therefore still very moist and, as has been shown in practice, can cause swelling on kitchen furniture adjacent to the dishwasher or on a worktop arranged above the dishwasher.
  • the inlet opening for the moist air in the washing container is arranged in the region of the highest point of the washing container and the outlet opening for the moist air in the container arranged separately from the washing container in the region of the bottom of this container is arranged.
  • the warm moist air is therefore conducted downwards again in a connecting tube between the washing container and the separately arranged container. Since, as is known, moist air is moved upward, the conveyance of the moist air is not ensured in accordance with the exemplary embodiment shown in the prior publication.
  • the object of the invention is to provide an arrangement for drying dishes in dishwashers, in which a sufficient cooling of the moist air and a safe conveyance of the moist air is ensured in a simple manner.
  • this object is achieved in that moist air is conveyed from the rinsing container by means of a blower into the container and back there into the rinsing container, the moist air in the container being guided in a meandering guide over the surface of the fresh water stored for the next rinsing process.
  • the moist air By introducing the moist air onto the surface of the fresh water and guiding it in a meandering manner, the largest possible contact of the moist air with the surface of the fresh water is achieved, and thereby optimal cooling of the introduced moist air is achieved.
  • the optimal cooling of the introduced moist air leads to sufficient condensation of the moisture contained in the moist air.
  • the use of a blower ensures that the moist air is conveyed safely.
  • a closed air circuit is created, so that an adverse effect on kitchen furniture or worktops etc. adjacent to the dishwasher is avoided.
  • the container is only partially filled with fresh water. With this measure, another Fresh water savings achieved.
  • means are provided for measuring the temperature of the fresh water stored in the container, by means of which control elements for filling a further quantity of fresh water into the container can be controlled upon detection of a definable increase in temperature.
  • the inevitable heating of the fresh water by the humid air conducted over it is specifically eliminated with this measure while avoiding any unnecessary consumption of fresh water, so that the result of the cooling of the humid air and the condensation of the moisture contained therein remains the same over the entire drying process.
  • the blower is directed in such a way that the moist air is sucked in from a pump pot arranged in the lower region of the washing container and is introduced into the upper region of the washing container again.
  • the cooled air introduced into the upper area of the washing compartment sinks down and inevitably heats up on the dishes to be dried, absorbing moisture.
  • To prevent the reheated air from remaining in the upper area of the washing compartment it is drawn in from the lower area of the washing compartment, thus ensuring an optimal, closed air circuit.
  • the moist air in the container is advantageously directed from above onto the water surface.
  • the container is a water inlet container with at least one water inlet and one water outlet and at least one air inlet and one air outlet, in the wall of which a temperature sensor is provided.
  • a water inlet container is used to stock and measure the amount of fresh water required for a washing program section, so that the arrangement according to the invention ensures that the fresh water introduced during the drying program section is kept in stock for the next washing processes and that fresh water consumption alone for the "drying" program section is completely avoided is.
  • the separate water and air circuits guarantee a trouble-free process of cooling the humid air in the "drying" program section as well as a trouble-free process of filling the stored water into the rinse tank in one of the next wash program sections.
  • the temperature sensor ensures the control of control elements for the introduction of a further quantity of fresh water.
  • At least one vertical partition wall starting from a wall of the water inlet container is provided in the water inlet container.
  • the at least one partition is expediently produced in one piece with the wall of the water inlet container.
  • the blower is advantageously arranged in a moist air line running from the pump pot to the air inlet into the water inlet container.
  • the moist air line is made at least partially in one piece with the water inlet container along the course thereof.
  • the housing of the fan is expediently made at least partially in one piece with the moist air line and the water inlet container.
  • a pump pot 2 arranged at the lower end of the rinsing container 1 moist air is introduced into the water inlet container 10 through an air inlet 13 via a moist air line 21 by means of a blower 20 which is arranged in this wet air line 21.
  • the air passes through the air outlet 14 via an air outlet line 15 in a closed circuit back into the washing container 1.
  • the direction of flow of the air is indicated by arrows with the designation 22.
  • a temperature sensor 25 is provided in the wall of the water inlet container 10.
  • the water outlet 12 In the direction of flow 22 at the lower end of the water inlet container 10 is the water outlet 12, which is closed by means of a commercially available valve, for example a solenoid valve which can be controlled by a program control unit of the household dishwasher.
  • a commercially available valve for example a solenoid valve which can be controlled by a program control unit of the household dishwasher.
  • the moist air line 21 is at least partially made in one piece with the water inlet container 10 over the course thereof.
  • the housing of the blower 20 with the moist air line 21 and the water inlet container 10 is at least partially made in one piece.
  • the dishes are stored in dish racks (not shown) in the washing container 1.
  • the dishes are heated in a conventional dishwasher by means of very warm washing liquid, which in the drying program section following the pumping out of the washing liquid leads to the fact that washing liquid adhering to the dishes evaporates and is heated by the washing liquid in the washing container Air is absorbed as moisture.
  • the resulting moist air is introduced according to the invention from the rinsing tank 1 by means of the blower 20 into the water inlet tank 10, which is filled with fresh water at least at the beginning of the drying section of the program. Through the air inlet 13 directed downward in the direction of flow 22, the moist air in the water inlet container 10 is directed from above onto the water surface.
  • a lowest level of the water surface is indicated at 17. Since the air inlet 13 is arranged at an outer corner of the cuboidal water inlet container 10, for example, the moist air has to flow around the partition walls 16 and is given a meandering guidance over the surface of the fresh water.
  • the inevitable heating of the fresh water is measured continuously or cyclically by the temperature sensor 25, which is arranged below the level 17 in the wall of the water inlet container, and compared with a definable temperature increase value. If the definable temperature increase is reached, the temperature sensor controls, e.g. by means of an impulse, control elements for filling a further quantity of fresh water into the water inlet container 10, e.g. a program controller of the dishwasher, not shown, which e.g.
  • the amount of additional fresh water to be filled in can e.g. by the temperature sensor 25, e.g. when the desired colder mixing temperature is reached, or by a time pulse, e.g. can be controlled from the program control device, not shown, or by a device for quantity limitation.
  • the condensate that precipitates - just like the part of the fresh water that has been filled in - is stored for the next rinsing process. Consumption of fresh water only for the drying sub-program is therefore effectively excluded with simple means.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

To avoid use of fresh water only for the drying section of the programme, in a dishwashing machine having a washing container, a container arranged separately from the washing container, a fan for conveying moist air from the washing container through the container arranged separately from the washing container and back to the washing container, fresh water being introduced into the container arranged separately from the washing container, the moist air in the container arranged separately from the washing container is passed over the surface of fresh water stored for the next washing operations. <IMAGE>

Description

Die Erfindung betrifft eine Anordnung zum Trocknen von Geschirr in Haushalt-Geschirrspülmaschinen nach dem Oberbegriff des Patentanspruches 1.The invention relates to an arrangement for drying dishes in household dishwashers according to the preamble of patent claim 1.

Aus der DE-A-19 26 049 ist eine Anordnung zum Trocknen von Geschirr in Geschirrspülmaschinen bekannt, wobei die Geschirrspülmaschine mit einem Spülbehälter, einem getrennt von dem Spülbehälter angeordneten Behälter, einem Gebläse zur Beförderung von Feuchtluft aus dem Spülbehälter durch den getrennt von dem Spülbehälter angeordneten Behälter zum Spülbehälter zurück ausgestattet ist, wobei in den getrennt von dem Spülbehälter angeordneten Behälter Frischwasser eingeleitet wird. Während des Programmabschnittes Trocknen wird nach einem Ausführungsbeispiel der bekannten Geschirrspülmaschine mittels des Gebläses Feuchtluft aus dem Spülbehälter angesaugt und durch den als Kondensator ausgebildeten, getrennt von dem Spülbehälter angeordneten Behälter geleitet. Über eine Kühlwasserleitung, die in Windungen durch den Kondensator geleitet wird, wird Frischwasser eingeleitet, das aus der Kühlwasserleitung in Strömungsrichtung am Ende des Kondensators in dessen Ausgang austritt. Die Feuchtluft wird entlang der Kühlwasserleitung abgekühlt, so daß die in der Feuchtluft enthaltene Feuchtigkeit kondensiert und als Kondensat über den Ausgang des Kondensators mit dem ausfliessenden Frischwasser in den Spülbehälter zurückgeleitet wird.From DE-A-19 26 049 an arrangement for drying dishes in dishwashers is known, the dishwasher having a washing container, a container arranged separately from the washing container, a blower for conveying moist air from the washing container through the one separate from the washing container arranged container is equipped back to the rinsing container, fresh water being introduced into the container arranged separately from the rinsing container. During the drying program section, according to one exemplary embodiment of the known dishwasher, moist air is drawn in from the washing container by means of the blower and passed through the container which is designed as a condenser and is arranged separately from the washing container. Fresh water is introduced via a cooling water line, which is conducted in turns through the condenser, and emerges from the cooling water line in the flow direction at the end of the condenser in its outlet. The moist air is cooled along the cooling water line, so that the moisture contained in the moist air condenses and is returned as condensate to the rinsing tank via the outlet of the condenser with the fresh water flowing out.

Die abgekühlte Luft strömt ebenso über den Kondensatorausgang in den Spülbehälter und kann nun durch Erwärmung an dem Geschirr wieder Feuchtigkeit aufnehmen und zum Kondensator geleitet werden. Das Frischwasser wird durch eine Pumpe über einen Ablaufschlauch in den Abwasserkanal gefördert.The cooled air also flows through the condenser outlet into the rinsing container and can now absorb moisture through the dishes and be directed to the condenser. The fresh water is pumped through a drain hose into the sewer.

Nachteilig an der vorbeschriebenen Anordnung ist der Verbrauch einer großen Menge von Frischwassers allein zum Kondensieren der in der Feuchtluft enthaltenen Feuchtigkeit.A disadvantage of the arrangement described above is the consumption of a large amount of fresh water solely for condensing the moisture contained in the moist air.

Aus der DD-A-51 687 ist eine Geschirrspülmaschine bekanntgeworden, bei der zur Vermeidung des vorbeschriebenen Nachteils die Feuchtluft durch in eine getrennt vom Spülbehälter angeordnete, wärmeisolierte Kammer eingefülltes Kaltwasser geleitet wird, das bei der nächsten Befüllung des Spülbehälters in diesen eingefüllt wird. Bei der vorbeschriebenen Vorrichtung steigt die Feuchtluft durch das bevorratete Frischwasser in Form von Blasen verhältnismäßig schnell auf und wird dann aus dem Behälter herausgeleitet. Dies hat den Nachteil, daß nur die von Frischwasser umgebene Oberfläche der Luftblasen nur kurze Zeit gekühlt wird und dadurch eine ausreichende Kühlung der Feuchtluft nicht erreicht wird, so daß eine ausreichende Kondensation der in der Feuchtluft enthaltenen Feuchtigkeit nicht erzielt werden kann. Die ausgeleitete Luft ist daher noch sehr feucht und kann, wie sich in der Praxis gezeigt hat, an an die Geschirrspülmaschine angrenzenden Küchenmöbeln oder an einer oberhalb der Geschirrspülmaschine angeordneten Arbeitsplatte ein Aufquellen verursachen. Weiterhin ist in dem Ausführungsbeispiel der DD-A-51 687 beschrieben, daß die Eintrittsöffnung für die Feuchtluft im Spülbehälter im Bereich der höchsten Stelle des Spülbehälters angeordnet ist und die Austrittsöffnung für die Feuchtluft in dem gesondert vom Spülbehälter angeordneten Behälter im Bereich des Bodens dieses Behälters angeordnet ist. Im Ausführungsbeispiel wird die warme Feuchtluft in einem Verbindungsrohr zwischen Spülbehälter und gesondert angeordnetem Behälter daher wieder nach unten geleitet. Da bekanntermaßen Feuchtluft nach oben bewegt wird, ist die Förderung der Feuchtluft entsprechend dem gezeigten Ausführungsbeispiel der Vorveröffentlichung nicht sichergestellt.A dishwasher has become known from DD-A-51 687, in which, in order to avoid the above-described disadvantage, the moist air is passed through cold water filled into a heat-insulated chamber which is arranged separately from the washing container and which is filled in the next time the washing container is filled. In the device described above, the moist air rises relatively quickly through the stored fresh water in the form of bubbles and is then led out of the container. This has the disadvantage that only the surface of the air bubbles surrounded by fresh water is cooled only for a short time and sufficient cooling of the moist air is therefore not achieved, so that sufficient condensation of the moisture contained in the moist air cannot be achieved. The discharged air is therefore still very moist and, as has been shown in practice, can cause swelling on kitchen furniture adjacent to the dishwasher or on a worktop arranged above the dishwasher. Furthermore, in the embodiment of DD-A-51 687 it is described that the inlet opening for the moist air in the washing container is arranged in the region of the highest point of the washing container and the outlet opening for the moist air in the container arranged separately from the washing container in the region of the bottom of this container is arranged. In the exemplary embodiment, the warm moist air is therefore conducted downwards again in a connecting tube between the washing container and the separately arranged container. Since, as is known, moist air is moved upward, the conveyance of the moist air is not ensured in accordance with the exemplary embodiment shown in the prior publication.

Aufgabe der Erfindung ist es, eine Anordnung zum Trocknen von Geschirr in Geschirrspülmaschinen zu schaffen, bei der auf einfache Art und Weise eine ausreichende Kühlung der Feuchtluft sowie eine gesicherte Förderung der Feuchtluft gewährleistet ist.The object of the invention is to provide an arrangement for drying dishes in dishwashers, in which a sufficient cooling of the moist air and a safe conveyance of the moist air is ensured in a simple manner.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß Feuchtluft aus dem Spülbehälter mittels eines Gebläses in den Behälter und dort in den Spülbehälter zurück gefördert wird, wobei die Feuchtluft im Behälter in einer mäanderförmigen Führung über die Oberfläche des für nächste Spülvorgänge bevorrateten Frischwassers geleitet wird.According to the invention, this object is achieved in that moist air is conveyed from the rinsing container by means of a blower into the container and back there into the rinsing container, the moist air in the container being guided in a meandering guide over the surface of the fresh water stored for the next rinsing process.

Durch die Einleitung der Feuchtluft auf die Oberfläche des Frischwassers und deren mäanderförmige Führung wird eine möglichst großflächige Berührung der Feuchtluft mit der Oberfläche des Frischwassers erzielt und dadurch eine optimale Abkühlung der eingeleiteten Feuchtluft erreicht. Durch die optimale Abkühlung der eingeleiteten Feuchtluft wird ein ausreichendes Kondensieren der in der Feuchtluft enthaltenen Feuchtigkeit herbeigeführt. Durch den Einsatz eines Gebläses ist eine gesicherte Förderung der Feuchtluft gewährleistet. Durch die Zurückleitung der auskondensierten Luft in den Spülbehälter wird ein geschlossener Luftkreislauf geschaffen, sodaß eine nachteilige Einwirkung auf an die Geschirrspülmaschine angrenzende Küchenmöbel oder Arbeitsplatten usw. vermieden ist.By introducing the moist air onto the surface of the fresh water and guiding it in a meandering manner, the largest possible contact of the moist air with the surface of the fresh water is achieved, and thereby optimal cooling of the introduced moist air is achieved. The optimal cooling of the introduced moist air leads to sufficient condensation of the moisture contained in the moist air. The use of a blower ensures that the moist air is conveyed safely. By returning the condensed air to the washing container, a closed air circuit is created, so that an adverse effect on kitchen furniture or worktops etc. adjacent to the dishwasher is avoided.

Nach einem bevorzugten Merkmal der Erfindung ist der Behälter zumindest zu Beginn des Programmabschnittes "Trocknen" nur zu einem Teil seiner gesamten Füllmenge mit Frischwasser gefüllt. Mit dieser Maßnahme wird eine weitere Einsparung von Frischwasser erzielt.According to a preferred feature of the invention, at least at the beginning of the “drying” program section, the container is only partially filled with fresh water. With this measure, another Fresh water savings achieved.

Nach einem weiteren Merkmal der Erfindung sind Mittel zur Messung der Temperatur des in dem Behälter bevorrateten Frischwassers vorgesehen, über die bei Feststellung einer festlegbaren Tempraturerhöhung Steuerorgane für das Einfüllen einer weiteren Frischwassermenge in den Behälter ansteuerbar sind. Die zwangsläufig erfolgende Erwärmung des Frischwassers durch die darüber geleitete Feuchtluft wird mit dieser Maßnahme unter Vermeidung jeglichen unnötigen Frischwasserverbrauches gezielt aufgehoben, so daß das Ergebnis des Abkühlens der Feuchtluft und des Kondensierens der darin enthaltenen Feuchtigkeit über dem gesamten Trockenvorgang gleich bleibt.According to a further feature of the invention, means are provided for measuring the temperature of the fresh water stored in the container, by means of which control elements for filling a further quantity of fresh water into the container can be controlled upon detection of a definable increase in temperature. The inevitable heating of the fresh water by the humid air conducted over it is specifically eliminated with this measure while avoiding any unnecessary consumption of fresh water, so that the result of the cooling of the humid air and the condensation of the moisture contained therein remains the same over the entire drying process.

Nach einer weiteren Ausführungsform der Erfindung ist das Gebläse derart gerichtet, daß die Feuchtluft aus einem im unteren Bereich des Spülbehälters angeordneten Pumpentopf angesaugt und im oberen Bereich des Spülbehälters in diesen wieder eingeleitet wird. Die im oberen Bereich des Spülbehälters eingeleitete, abgekühlte Luft sinkt nach unten und erwärmt sich zwangsläufig an dem zu trocknenden Geschirr, wobei sie Feuchtigkeit mit aufnimmt. Um zu verhindern, daß die wieder erwärmte Luft im oberen Bereich des Spülbehälters verbleibt, wird sie aus dem unteren Bereich des Spülbehälters angesaugt, womit ein optimaler, geschlossener Luftkreislauf gewährleistet ist.According to a further embodiment of the invention, the blower is directed in such a way that the moist air is sucked in from a pump pot arranged in the lower region of the washing container and is introduced into the upper region of the washing container again. The cooled air introduced into the upper area of the washing compartment sinks down and inevitably heats up on the dishes to be dried, absorbing moisture. To prevent the reheated air from remaining in the upper area of the washing compartment, it is drawn in from the lower area of the washing compartment, thus ensuring an optimal, closed air circuit.

Vorteilhafterweise wird die Feuchtluft in dem Behälter von oben auf die Wasseroberfläche geleitet.The moist air in the container is advantageously directed from above onto the water surface.

Erfindungsgemäß ist der Behälter ein Wassereinlaufbehälter mit wenigstens einem Wassereinlaß und einem Wasserauslaß und wenigstens einem Lufteinlaß und einem Luftauslaß, in dessen Wand ein Temperaturfühler vorgesehen ist.According to the invention, the container is a water inlet container with at least one water inlet and one water outlet and at least one air inlet and one air outlet, in the wall of which a temperature sensor is provided.

Ein Wassereinlaufbehälter dient zur Bevorratung und Bemessung der für einen Spülprogrammabschnitt notwendigen Frischwassermenge, so daß mit der erfindungsgemäßen Anordnung gewährleistet ist, daß das während des Programmabschnittes Trocknen eingeleitete Frischwasser für nächste Spülvorgänge bevorratet wird und ein Verbrauch von Frischwasser allein für den Programmabschnitt "Trocknen" vollständig vermieden ist. Die getrennten Wasser- und Luftkreisläufe bieten die Gewähr für einen störungsfreien Ablauf des Abkühlens der Feuchtluft im Programmabschnitt "Trocknen" ebenso wie eines störungsfreien Ablaufes des Einfüllens des bevorrateten Wassers in den Spülbehälter in einem der nächsten Spülprogrammabschnitte. Der Temperaturfühler gewährleistet die Ansteuerung von Steuerorganen für das Einleiten einer weiteren Frischwassermenge.A water inlet container is used to stock and measure the amount of fresh water required for a washing program section, so that the arrangement according to the invention ensures that the fresh water introduced during the drying program section is kept in stock for the next washing processes and that fresh water consumption alone for the "drying" program section is completely avoided is. The separate water and air circuits guarantee a trouble-free process of cooling the humid air in the "drying" program section as well as a trouble-free process of filling the stored water into the rinse tank in one of the next wash program sections. The temperature sensor ensures the control of control elements for the introduction of a further quantity of fresh water.

Nach einer weiteren bevorzugten Ausführungsform der Erfindung ist in dem Wassereinlaufbehälter wenigstens eine von einer Wand des Wassereinlaufbehälters ausgehende, senkrechte Trennwand vorgesehen. Damit wird die mäanderförmige Führung der Feuchtluft über die Oberfläche des bevorrateten Frischwassers mit einfachen Maßnahmen bewirkt.According to a further preferred embodiment of the invention, at least one vertical partition wall starting from a wall of the water inlet container is provided in the water inlet container. The meandering guidance of the moist air over the surface of the stored fresh water is thus effected with simple measures.

Zweckmäßigerweise ist die wenigstens eine Trennwand einstückig mit der Wand des Wassereinlaufbehälters hergestellt.The at least one partition is expediently produced in one piece with the wall of the water inlet container.

Vorteilhafterweise ist das Gebläse in einer vom Pumpentopf zum Lufteinlaß in den Wassereinlaufbehälter verlaufenden Feuchtluftleitung angeordnet.The blower is advantageously arranged in a moist air line running from the pump pot to the air inlet into the water inlet container.

Nach einer vorteilhaften Ausführungsform der Erfindung ist die Feuchtluftleitung über den Verlauf entlang des Wassereinlaufbehälters mit diesem wenigstens teilweise einstückig hergestellt.According to an advantageous embodiment of the invention, the moist air line is made at least partially in one piece with the water inlet container along the course thereof.

Zweckmäßigerweise ist das Gehäuse des Gebläses mit der Feuchtluftleitung und dem Wassereinlaufbehälter wenigstens teilweise einstückig hergestellt.The housing of the fan is expediently made at least partially in one piece with the moist air line and the water inlet container.

Die Erfindung wird nachstehend anhand des in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained below with reference to the embodiment shown in the drawing.

Es zeigt

  • Fig. 1 einen senkrechten Schnitt durch eine Geschirrspülmaschine mit der erfindungsgemäßen Anordnung und
  • Fig. 2 einen Schnitt durch die erfindungsgemäße Anordnung entsprechend den Schnittlinien 11-11 in Fig. 1.
It shows
  • Fig. 1 shows a vertical section through a dishwasher with the arrangement according to the invention and
  • 2 shows a section through the arrangement according to the invention in accordance with the section lines 11-11 in FIG. 1.

Getrennt von dem Spülbehälter 1 einer Geschirrspülmaschine ist ein als Wassereinlaufbehälter 10 ausgebildeter Behälter angeordnet, in den über einen Wassereinlaß 11 Frischwasser aus einer Hauswasserleitung über eine nicht gezeigte Zuführleitung eingefüllt wird. Aus einem am unteren Ende des Spülbehälters 1 angeordneten Pumpentopf 2 wird über eine Feuchtluftleitung 21 mittels eines Gebläses 20, das in dieser Feuchtluftleitung 21 angeordnet ist, Feuchtluft durch einen Lufteinlaß 13 in den Wassereinlaufbehälter 10 eingeleitet. Aus dem Wassereinlaufbehälter 10 gelangt die Luft durch den Luftauslaß 14 über eine Luftauslaßleitung 15 in einem geschlossenen Umlauf zurück in den Spülbehälter 1. Die Strömungsrichtung der Luft ist mit Pfeilen mit der Bezeichnung 22 angezeigt. In der Wandung des Wassereinlaufbehälters 10 ist ein Temperaturfühler 25 vorgesehen. In Strömungsrichtung 22 am unteren Ende des Wassereinlaufbehälters 10 befindet sich der Wasserauslaß 12, der mittels eines handelsüblichen Ventiles, z.B. eines von einem Programmsteuergerät der Haushalt-Geschirrspülmaschine steuerbaren Magnetventiles verschlossen ist. In dem Wassereinlaufbehälter 10 sind von gegenüberliegenden Wänden des Wassereinlaufbehälters 10 ausgehende senkrechte Trennwände 16 vorgesehen, die einstückig mit der Wand des Wassereinlaufbehälters 10, von der sie ausgehen, hergestellt sind. Die Feuchtluftleitung 21 ist über deren Verlauf entlang des Wassereinlaufbehälters 10 mit diesem wenigstens teilweise einstückig hergestellt. Ebenso ist das Gehäuse des Gebläses 20 mit der Feuchtluftleitung 21 und dem Wassereinlaufbehälter 10 wenigstens teilweise einstückig hergestellt.Separated from the washing container 1 of a dishwasher is a container designed as a water inlet container 10, into which fresh water from a domestic water line is filled via a water inlet 11 via a feed line, not shown. From a pump pot 2 arranged at the lower end of the rinsing container 1, moist air is introduced into the water inlet container 10 through an air inlet 13 via a moist air line 21 by means of a blower 20 which is arranged in this wet air line 21. From the water inlet container 10, the air passes through the air outlet 14 via an air outlet line 15 in a closed circuit back into the washing container 1. The direction of flow of the air is indicated by arrows with the designation 22. A temperature sensor 25 is provided in the wall of the water inlet container 10. In the direction of flow 22 at the lower end of the water inlet container 10 is the water outlet 12, which is closed by means of a commercially available valve, for example a solenoid valve which can be controlled by a program control unit of the household dishwasher. In the water inlet container 10 are provided from opposite walls of the water inlet container 10 vertical partition walls 16 which are made in one piece with the wall of the water inlet container 10 from which they originate. The moist air line 21 is at least partially made in one piece with the water inlet container 10 over the course thereof. Likewise, the housing of the blower 20 with the moist air line 21 and the water inlet container 10 is at least partially made in one piece.

Zum Spülen in der Geschirrspülmaschine ist nicht gezeigtes Geschirr in nicht dargestellten Geschirrkörben im Spülbehälter 1 eingelagert. In dem einem Programmabschnitt Trocknen vorausgehenden Programmabschnitt wird in einer üblichen Geschirrspülmaschine das Geschirr mittels sehr warmer Spülflüssigkeit erhitzt, was in dem auf das Abpumpen der Spülflüssigkeit folgenden Programmabschnitt Trocknen, dazu führt, daß zwangsläufig an dem Geschirr anhaftende Spülflüssigkeit verdampft und von der im Spülbehälter befindlichen erwärmten Luft als Feuchtigkeit aufgenommen wird. Die so entstandene Feuchtluft wird erfindungsgemäß aus dem Spülbehälter 1 mittels des Gebläses 20 in den Wassereinlaufbehälter 10 eingeleitet, der zumindest zu Beginn des Programmabschnitts Trocknen zu einem Teil seiner gesamten Füllmenge mit Frischwasser gefüllt ist. Durch den in Strömungsrichtung 22 nach unten gerichteten Lufteinlaß 13 wird die Feuchtluft im Wassereinlaufbehälter 10 von oben auf die Wasseroberfläche geleitet. Ein niedrigstes Niveau der Wasseroberfläche ist mit 17 bezeichnet. Da der Lufteinlaß 13 an einer äußeren Ecke des zum Beispiel quaderförmigen Wassereinlaufbehälters 10 angeordnet ist, muß die Feuchtluft um die Trennwände 16 strömen und erhält dabei eine mäanderförmige Führung über die Oberfläche des Frischwassers. Die zwangsläufige Erwärmung des Frischwassers wird von dem Temperaturfühler 25, der unterhalb des Niveaus 17 in der Wand des Wassereinlaufbehälters angeordnet ist, ständig oder zyklusweise gemessen und mit einem festlegbaren Temperaturerhöhungswert verglichen. Wird die festlegbare Temperaturerhöhung erreicht, so steuert der Temperaturfühler, z.B. mittels eines Impulses, Steuerorgane für das Einfüllen einer weiteren Frischwassermenge in den Wassereinlaufbehälter 10, z.B. ein nicht gezeigtes Programmsteuergerät der Geschirrspülmaschine an, das z.B. durch Öffnen eines nicht gezeigten Wassereinlaufventiles der Geschirrspülmaschine das Einfüllen einer weiteren Frischwassermenge in den Wassereinlaufbehälter einleitet. Die Menge der weiteren einzufüllenden Frischwassermenge kann z.B. durch den Temperaturfühler 25, z.B. bei Erreichen der gewünschten kälteren Mischtemperatur, oder durch einen Zeitimpuls, z.B. aus dem nicht gezeigten Programmsteuergerät, oder durch eine Einrichtung zur Mengenbegrenzung gesteuert werden. Das sich niederschlagende Kondensat - ebenso wie die eingefüllte Teilmenge an Frischwasser - wird für nächste Spülvorgänge bevorratet. Ein Verbrauch von Frischwasser nur für das Teilprogramm Trocknen ist somit mit einfachen Mitteln wirkungsvoll ausgeschlossen.For washing in the dishwasher, dishes (not shown) are stored in dish racks (not shown) in the washing container 1. In the program section preceding a drying program section, the dishes are heated in a conventional dishwasher by means of very warm washing liquid, which in the drying program section following the pumping out of the washing liquid leads to the fact that washing liquid adhering to the dishes evaporates and is heated by the washing liquid in the washing container Air is absorbed as moisture. The resulting moist air is introduced according to the invention from the rinsing tank 1 by means of the blower 20 into the water inlet tank 10, which is filled with fresh water at least at the beginning of the drying section of the program. Through the air inlet 13 directed downward in the direction of flow 22, the moist air in the water inlet container 10 is directed from above onto the water surface. A lowest level of the water surface is indicated at 17. Since the air inlet 13 is arranged at an outer corner of the cuboidal water inlet container 10, for example, the moist air has to flow around the partition walls 16 and is given a meandering guidance over the surface of the fresh water. The inevitable heating of the fresh water is measured continuously or cyclically by the temperature sensor 25, which is arranged below the level 17 in the wall of the water inlet container, and compared with a definable temperature increase value. If the definable temperature increase is reached, the temperature sensor controls, e.g. by means of an impulse, control elements for filling a further quantity of fresh water into the water inlet container 10, e.g. a program controller of the dishwasher, not shown, which e.g. initiates the filling of a further quantity of fresh water into the water inlet container by opening a water inlet valve (not shown) of the dishwasher. The amount of additional fresh water to be filled in can e.g. by the temperature sensor 25, e.g. when the desired colder mixing temperature is reached, or by a time pulse, e.g. can be controlled from the program control device, not shown, or by a device for quantity limitation. The condensate that precipitates - just like the part of the fresh water that has been filled in - is stored for the next rinsing process. Consumption of fresh water only for the drying sub-program is therefore effectively excluded with simple means.

Claims (11)

1. Arrangement for the drying of dishes in dishwashing machines, comprising a rinsing container (1) and a container (10) arranged separately from the rinsing container, wherein fresh water is conducted into the container (10), characterised thereby that moist air from the rinsing container (1) is conveyed by means of a blower (20) into the container (10) and from there back into the rinsing container (1), wherein the moist air in the container (10) is conducted in a meander-shaped guide (16) over the surface of the fresh water stored for the next rinsing processes.
2. Arrangement according to claim 1, characterised thereby that the container (10) at least at the start of the program section "drying" is filled with fresh water to only a part of its total filling quantity.
3. Arrangement according to claim 1 or 2, characterised thereby that means (25) are provided for the measuring of the temperature of the fresh water stored in the container (10), by way of which means control elements for the filling of a further fresh water quantity into the container (10) are drivable on ascertaining of a fixable temperature increase.
4. Arrangement according to one of claims 1 to 3, characterised thereby that the blower (20) is directed in such a manner that the moist air is sucked from the pump pot (2) arranged in the lower region of the rinsing container (1), and in the upper region of the rinsing container (1) is conducted into this again.
5. Arrangement according to one of claims 1 to 4, characterised thereby that the moist air is conducted into the container (10) from above on the water surface.
6. Arrangement according to one of claims 1 to 5, characterised thereby that the container (10) is a water inlet container (10) with at least one water inlet (11) and a water outlet (12) and at least one air inlet (13) and an air outlet (14), in the wall of which a temperature sensor (25) is provided.
7. Arrangement according to claim 6, characterised thereby that at least one vertical partition wall (16) going out from a wall of the water inlet container (10) is provided in the water inlet container (10).
8. Arrangement according to claim 7, characterised thereby that the at least one partition wall (16) is produced integrally with the wall of the water inlet container (10).
9. Arrangement according to one of claims 6 to 8, characterised thereby that the blower (20) is arranged in a moist air duct (21) running from the pump pot (20) to the air inlet (13).
10. Arrangement according to one of claims 1 to 9, characterised thereby that the moist air duct (21) over the course along the water inlet container (10) is produced integrally with this at least in part.
11. Arrangement according to one of claims 1 to 10, characterised thereby that the housing of the blower (20) is produced integrally with the moist air duct (21) and the water inlet container (10) at least in part.
EP91117986A 1990-11-23 1991-10-22 Arrangement for drying crockery in dishwashing machines Expired - Lifetime EP0486828B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4037367 1990-11-23
DE4037367A DE4037367C2 (en) 1990-11-23 1990-11-23 Arrangement for drying dishes in dishwashers

Publications (2)

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EP0486828A1 EP0486828A1 (en) 1992-05-27
EP0486828B1 true EP0486828B1 (en) 1995-04-05

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EP91117986A Expired - Lifetime EP0486828B1 (en) 1990-11-23 1991-10-22 Arrangement for drying crockery in dishwashing machines

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EP (1) EP0486828B1 (en)
AT (1) ATE120626T1 (en)
DE (2) DE4037367C2 (en)
DK (1) DK0486828T3 (en)
ES (1) ES2071187T3 (en)
GR (1) GR3015711T3 (en)

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Also Published As

Publication number Publication date
ATE120626T1 (en) 1995-04-15
DE59105106D1 (en) 1995-05-11
DK0486828T3 (en) 1995-08-21
EP0486828A1 (en) 1992-05-27
ES2071187T3 (en) 1995-06-16
GR3015711T3 (en) 1995-07-31
DE4037367A1 (en) 1992-05-27
DE4037367C2 (en) 1994-03-31

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