EP0536621B1 - Dishwasher - Google Patents

Dishwasher Download PDF

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Publication number
EP0536621B1
EP0536621B1 EP92116613A EP92116613A EP0536621B1 EP 0536621 B1 EP0536621 B1 EP 0536621B1 EP 92116613 A EP92116613 A EP 92116613A EP 92116613 A EP92116613 A EP 92116613A EP 0536621 B1 EP0536621 B1 EP 0536621B1
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EP
European Patent Office
Prior art keywords
opening
condensation chamber
washing machine
machine according
washing tank
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Expired - Lifetime
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EP92116613A
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German (de)
French (fr)
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EP0536621A1 (en
Inventor
Manfred Gumm
Martin Schäfer
K. Ulrich Ferber
Arris Hasselman
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Bauknecht Hausgeraete GmbH
Whirlpool Europe BV
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Bauknecht Hausgeraete GmbH
Whirlpool Europe BV
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/48Drying arrangements
    • A47L15/483Drying arrangements by using condensers

Definitions

  • the invention relates to a dishwasher with a washing container and a U-shaped condensation chamber arranged outside the washing container, one leg of which is connected to an opening of the washing container and the other leg of which is guided to the ambient air via an outlet, with an appropriate design the condensation chamber can run back at least part of the condensation water that forms into the rinsing container.
  • the air inside the dishwasher rinse container is very rich in water.
  • the dishes are rinsed at high temperatures (60 ° C to 70 ° C), which leads to a supersaturated atmosphere in the dishwasher. Since there are no suitable cooling surfaces and an air exchange almost does not take place, this leads to very poor drying results in the subsequent drying process if no special measures are taken.
  • the saturated air can no longer absorb water and therefore no longer contribute to drying. Removing the dishes immediately after the washing process usually requires additional drying by hand in order, for. B. to get shiny and spotless dishes. Height Temperature and humidity also lead to signs of corrosion on glass and cutlery over time.
  • a significant improvement in the drying effect is achieved by a so-called open system, in which all or part of the moist air is led out from the interior during the rinsing and drying process.
  • the moist air leading to the outside has a detrimental effect on the environment.
  • worktops or kitchen furniture can swell.
  • EP-A-0 381 647 discloses a dishwasher of the type mentioned at the outset.
  • the condensation chamber consists of one or more U-shaped conduit tubes which are connected at one end to a side opening of the washing compartment via a common connection and the free ends of which are via outlet openings into the space between the housing and Open the rinsing container.
  • the conduit tubes run in the form of an arch within a plane parallel to a side wall in such a way that the free outlet openings lie below the side opening of the container.
  • the connecting tubes run from the container opening in the side wall over the ceiling of the container and also end on the opposite side wall in such a way that the outlet openings lie below the side opening of the container.
  • the part of the connecting tubes running above the ceiling of the container is arranged obliquely, so that condensate that forms runs back into the container by gravity. The condensed water emerging at the outlet openings is in a small tub caught.
  • the invention has for its object to simplify and improve a dishwasher of the type mentioned with regard to the device for drying.
  • the opening for connecting the condensation chamber is arranged on the ceiling of the washing compartment, that the U-shaped condensation chamber extends with both legs above the ceiling side of the washing compartment and is provided with a drain opening in the curved area and that both legs of the condensation chamber are inclined towards the drain opening opposite the ceiling.
  • the arrangement of the opening in the ceiling area of the rinsing container results in a short path for the moisture-laden air from the container into the condensation chamber. The vapor that mostly collects in the upper part of the rinsing container can thus be discharged directly into the condensation chamber.
  • Both legs are space-saving in practically one level above the rinsing tank, with a simple possibility for the condensate collecting to run off in that the drain opening is arranged in the region of the curvature of the U-shaped condensation chamber. Both legs are inclined towards this outlet opening in relation to the ceiling. It is thereby achieved that the condensed water, which collects in the two legs of the condensation chamber, is led to the drain opening over a short distance.
  • the condensation chamber is in for space-saving reasons Embodiment of the invention designed as a rectangular tube. This shape also enables easy assembly.
  • the rectangular tube is funnel-shaped in the entrance area to the opening of the rinsing container. This ensures that spray water flows from the washing container back into the washing container immediately.
  • This funnel-shaped training can, for. B. can be achieved in that the entrance area is formed on the floor and ceiling side with bevels which are directed toward the opening of the washing compartment.
  • the rectangular tube has baffles which are directed vertically downward from their ceiling side and form a distance from the floor.
  • baffles which are directed vertically downward from their ceiling side and form a distance from the floor.
  • the drain opening on the curvature of the condensation chamber is connected via a hose connection to a further opening on a side wall of the rinsing container.
  • This further opening in the side wall of the rinsing container serves as air compensation for the air laden with moisture that flows out through the ceiling opening into the condensation chamber.
  • the hose connection is guided into a regeneration metering which is arranged on a side wall of the washing container and is connected on the one hand to the lateral opening of the washing container and on the other hand to the outside air.
  • Fig. 1 shows a washing container 10, which is provided on its ceiling 10a with an opening 11 for connecting a condensation chamber 12.
  • the U-shaped condensation chamber 12 is connected via a hose connection 13 to a regeneration metering device 14, which can be connected to a further opening 15 in a side wall 10b of the washing container via a connection piece (not shown).
  • the regeneration dosage 14 is connected via an outlet opening 14b connected to the outside air.
  • the condensation chamber 12 is designed in the form of a U-shaped rectangular tube and is connected to the opening 11 of the washing compartment 10 via its short leg 12a.
  • this short leg is provided on the bottom and on the ceiling with bevels 17 which are oriented in such a way that splash water flows from the washing container 10 in the direction of the arrows 18 back into the washing container.
  • baffle walls 19 are provided over the entire course of the tubular condensation chamber and extend downward from the top side 12c of the condensation chamber 12 towards the bottom 12d. Their distance 20, 21 to the floor 12d becomes smaller and smaller in the direction of the pipe outlet 22.
  • the baffle walls 19 give the condensation chamber 12 a sawtooth-shaped configuration on its upper side.
  • the condensation chamber is provided with a drain opening 12e to which the hose 13 is connected.
  • both legs 12a, b are inclined towards the drain opening 12e.
  • the condensate which forms on the baffle walls 19 and on the inner walls of the condensation chamber 12 and collects in the form of drops flows due to the inclination of the legs 12a, b to the outlet opening 12e and can thus be fed back into the washing container 10 via the connecting hose 13 and the regeneration metering device 14.
  • the design of the baffle walls 19 and their distances 20, 21 from the floor surface 12d are decisive for the flow rate due to the free convection emerging train. In order to prevent the condensate from closing, however, the gaps between the baffle walls 19 and the floor 12d must not be made too small.
  • the vapors produced during the heating up of the washing liquor, saturated moist air and very fine water droplets escape during the washing process via the ventilation opening 11 on the ceiling 10a of the washing container 10 (volume increase in the air due to heating).
  • This vapor then flows through the condensation chamber 12.
  • the water is removed from the vapor by the temperature difference and impact effect, and the air 23, which is only comparable with the ambient air, is supplied to the environment via the outlet 22.
  • the vapors in the rinsing container 10 are removed in the same way via the ventilation opening 11 and the condensation chamber 12.
  • the resulting draft is generated by the thermals of the warm air.
  • Air is equalized via the further ventilation opening 15 in the side wall 10b.
  • the incoming air 24, which reaches the washing compartment 10 from the engine compartment via this ventilation opening 15, is colder and drier than the air in the washing compartment 10. Once there, it sinks, heats up on hot dishes 25 and rises in the washing container 10 (arrows 26). It absorbs water, which is then excreted again in the condenser 12.
  • the water excreted in the condensation chamber 12 is fed through the connecting hose 13, the regeneration dosage 14 and through the opening 15 into the Rinsing container 10 led back.
  • an air duct is formed between the rinsing container and a housing 27 surrounding it through a not shown saving of the noise insulation to be used.

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  • Washing And Drying Of Tableware (AREA)

Description

Die Erfindung bezieht sich auf eine Geschirrspülmaschine mit einem Spülbehälter und einer außerhalb des Spülbehälters angeordneten, U-förmigen Kondensationskammer, deren einer Schenkel mit einer Öffnung des Spülbehälters verbunden ist und deren anderer Schenkel über einen Auslaß an die Umgebungsluft geführt ist, wobei durch eine entsprechende Ausbildung der Kondensationskammer mindestens ein Teil des sich bildenden Kondenswassers in den Spülbehälter zurücklaufen kann.The invention relates to a dishwasher with a washing container and a U-shaped condensation chamber arranged outside the washing container, one leg of which is connected to an opening of the washing container and the other leg of which is guided to the ambient air via an outlet, with an appropriate design the condensation chamber can run back at least part of the condensation water that forms into the rinsing container.

Während des Spülprozesses reichert sich die Luft innerhalb des Spülbehälters eines Geschirrspülers sehr stark mit Wasser an. Insbesondere im letzten Spülabschnitt, dem Klarspülen, wird in den meisten Fällen mit hoher Temperatur (60°C bis 70°C) gespült, was zu einer übersättigten Atmosphäre im Geschirrspüler führt. Da geeignete Kühlflächen fehlen und ein Luftaustausch fast nicht zustande kommt, führt dieses, wenn keine besonderen Maßnahmen ergriffen werden, beim anschließenden Trocknungsvorgang zu sehr schlechten Trocknungsresultaten. Trotz großen Wärmeinhalts des Spülgutes kann die gesättigte Luft kein Wasser mehr aufnehmen und somit selbst nicht mehr zur Trocknung beitragen. Eine Entnahme des Geschirrs unmittelbar nach dem Spülprozeß erfordert meist ein zusätzliches Trocknen von Hand, um z. B. glänzendes und fleckenreines Geschirr zu erhalten. Hohe Temperatur und Feuchtigkeit führen mit der Zeit auch zu Korrosionserscheinungen an Glas- und Besteckteilen.During the rinsing process, the air inside the dishwasher rinse container is very rich in water. Especially in the last rinse section, rinse-aid, in most cases the dishes are rinsed at high temperatures (60 ° C to 70 ° C), which leads to a supersaturated atmosphere in the dishwasher. Since there are no suitable cooling surfaces and an air exchange almost does not take place, this leads to very poor drying results in the subsequent drying process if no special measures are taken. Despite the high heat content of the wash ware, the saturated air can no longer absorb water and therefore no longer contribute to drying. Removing the dishes immediately after the washing process usually requires additional drying by hand in order, for. B. to get shiny and spotless dishes. Height Temperature and humidity also lead to signs of corrosion on glass and cutlery over time.

Eine wesentliche Verbesserung der Trocknungswirkung erhält man durch ein sogenanntes offenes System, bei dem während des Spül- und Trocknungsprozesses die feuchte Luft aus dem Innenraum ganz oder teilweise nach außen geführt wird. Dabei wirkt sich jedoch die nach außen geführte feuchte Luft nachteilig auf die Umgebung aus, wodurch z. B. Arbeitsplatten oder Küchenmöbel aufquellen können.A significant improvement in the drying effect is achieved by a so-called open system, in which all or part of the moist air is led out from the interior during the rinsing and drying process. However, the moist air leading to the outside has a detrimental effect on the environment. B. worktops or kitchen furniture can swell.

Durch die EP-A-0 381 647 ist eine Geschirrspülmaschine der eingangs genannten Art bekannt geworden. Bei einer ersten Ausführung dieser bekannten Bauart besteht die Kondensationskammer aus einer oder mehreren, U-förmig gebogenen Leitungsröhren, die mit ihrem einen Ende über einen gemeinsamen Anschluß an eine seitliche Öffnung des Spülbehälters angeschlossen sind und deren freie Enden über Auslaßöffnungen in den Raum zwischen Gehäuse und Spülbehälter münden. Dabei verlaufen die Leitungsröhren torbogenförmig innerhalb einer Ebene parallel zu einer Seitenwand derart, daß die freien Auslauföffnungen unterhalb der seitlichen Öffnung des Behälters liegen. Bei einer zweiten Ausführungsform der bekannten Bauart verlaufen die Verbindungsröhren von der Behälteröffnung in der Seitenwand über die Decke des Behälters und enden an der gegenüberliegenden Seitenwand ebenfalls so, daß die Auslaßöffnungen unterhalb der seitlichen Öffnung des Behälters liegen. Dabei ist der oberhalb der Decke des Behälters verlaufende Teil der Verbindungsröhren schräg angeordnet, so daß sich bildendes Kondenswasser durch Schwerkraft in den Behälter zurück läuft. Das an den Auslaßöffnungen austretende Kondenswasser wird in einer kleinen Wanne aufgefangen.EP-A-0 381 647 discloses a dishwasher of the type mentioned at the outset. In a first embodiment of this known type, the condensation chamber consists of one or more U-shaped conduit tubes which are connected at one end to a side opening of the washing compartment via a common connection and the free ends of which are via outlet openings into the space between the housing and Open the rinsing container. The conduit tubes run in the form of an arch within a plane parallel to a side wall in such a way that the free outlet openings lie below the side opening of the container. In a second embodiment of the known type, the connecting tubes run from the container opening in the side wall over the ceiling of the container and also end on the opposite side wall in such a way that the outlet openings lie below the side opening of the container. The part of the connecting tubes running above the ceiling of the container is arranged obliquely, so that condensate that forms runs back into the container by gravity. The condensed water emerging at the outlet openings is in a small tub caught.

Der Erfindung liegt die Aufgabe zugrunde, einen Geschirrspüler der eingangs genannten Art in Hinblick auf die Einrichtung zur Trocknung zu vereinfachen und zu verbessern.The invention has for its object to simplify and improve a dishwasher of the type mentioned with regard to the device for drying.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Öffnung zum Anschluß der Kondensationskammer an der Decke des Spülbehälters angeordnet ist, daß die U-förmige Kondensationskammer sich mit beiden Schenkeln oberhalb der Deckenseite des Spülbehälters erstreckt und im Krümmungsbereich mit einer Ablauföffnung versehen ist und daß beide Schenkel der Kondensationskammer in Richtung auf die Ablauföffnung gegenüber der Decke geneigt sind. Durch die Anordnung der Öffnung im Deckenbereich des Spülbehälters ergibt sich ein kurzer Weg für die feuchtigkeitsbeladene Luft aus dem Behälter in die Kondensationskammer. Der sich meist im oberen Teil des Spülbehälters sammelnde Wrasen kann somit direkt in die Kondensationskammer abgeführt werden. Beide Schenkel befinden sich raumsparend in praktisch einer Ebene oberhalb des Spülbehälters, wobei eine einfache Möglichkeit zum Ablaufen des sich sammelnden Kondenswassers dadurch gegeben ist, daß die Ablauföffnung im Bereich der Krümmung der U-förmigen Kondensationskammer angeordnet ist. Dabei sind beide Schenkel in Richtung auf diese Auslaßöffnung gegenüber der Decke geneigt. Dadurch wird erreicht, daß das Kondenswasser, das sich in den beiden Schenkeln der Kondensationskammer sammelt, auf kurzem Weg zu der Ablauföffnung geführt wird.This object is achieved according to the invention in that the opening for connecting the condensation chamber is arranged on the ceiling of the washing compartment, that the U-shaped condensation chamber extends with both legs above the ceiling side of the washing compartment and is provided with a drain opening in the curved area and that both legs of the condensation chamber are inclined towards the drain opening opposite the ceiling. The arrangement of the opening in the ceiling area of the rinsing container results in a short path for the moisture-laden air from the container into the condensation chamber. The vapor that mostly collects in the upper part of the rinsing container can thus be discharged directly into the condensation chamber. Both legs are space-saving in practically one level above the rinsing tank, with a simple possibility for the condensate collecting to run off in that the drain opening is arranged in the region of the curvature of the U-shaped condensation chamber. Both legs are inclined towards this outlet opening in relation to the ceiling. It is thereby achieved that the condensed water, which collects in the two legs of the condensation chamber, is led to the drain opening over a short distance.

Aus Raumspargründen ist die Kondensationskammer in Ausgestaltung der Erfindung als Rechteckrohr ausgebildet. Diese Form ermöglicht überdies eine einfache Montage.The condensation chamber is in for space-saving reasons Embodiment of the invention designed as a rectangular tube. This shape also enables easy assembly.

Das Rechteckrohr ist in einer weiteren Ausgestaltung der Erfindung im Eingangsbereich zu der Öffnung des Spülbehälters trichterförmig ausgebildet. Dadurch wird erreicht, daß Spritzwasser aus dem Spülbehälter sofort wieder in den Spülbehälter zurück fließt. Diese trichterförmige Ausbildung kann z. B. dadurch erreicht werden, daß der Eingangsbereich boden- und deckenseitig mit Schrägen ausgebildet ist, die zu der Öffnung des Spülbehälters hin gerichtet sind.In a further embodiment of the invention, the rectangular tube is funnel-shaped in the entrance area to the opening of the rinsing container. This ensures that spray water flows from the washing container back into the washing container immediately. This funnel-shaped training can, for. B. can be achieved in that the entrance area is formed on the floor and ceiling side with bevels which are directed toward the opening of the washing compartment.

In einer weiteren Ausgestaltung der Erfindung weist das Rechteckrohr von seiner Deckenseite möglichst senkrecht nach unten gerichtete, einen Abstand zu dem Boden bildende Prallwänden auf. Wenn der Wrasen diese rohrförmige Kondensationskammer durchflutet, so schlägt sich Wasser infolge der Kühl- und der Prallwirkung nieder. Dieser Effekt wird in einer weiteren Ausgestaltung noch dadurch erhöht, daß die Abstände der Prallwände zum Boden des Rechteckrohres in fortschreitender Richtung zum Rohrausgang immer kleiner werden.In a further embodiment of the invention, the rectangular tube has baffles which are directed vertically downward from their ceiling side and form a distance from the floor. When the vapor flows through this tubular condensation chamber, water condenses due to the cooling and impact effects. This effect is further increased in a further embodiment in that the distances between the baffle walls and the bottom of the rectangular tube become smaller and smaller in the advancing direction to the tube outlet.

In weiterer Ausgestaltung der Erfindung ist die Ablauföffnung an der Krümmung der Kondensationskammer über eine Schlauchverbindung mit einer weiteren Öffnung an einer Seitenwand des Spülbehälters verbunden. Dadurch wird das anfallende Kondensat auf kürzestem Wege in den Spülbehälter zurück befördert. Diese weitere Öffnung in der Seitenwand des Spülbehälters dient als Luftausgleich für die über die Deckenöffnung in die Kondenskammer ausströmende, mit Feuchtigkeit beladene Luft.In a further embodiment of the invention, the drain opening on the curvature of the condensation chamber is connected via a hose connection to a further opening on a side wall of the rinsing container. As a result, the condensate is conveyed back to the rinsing container in the shortest possible way. This further opening in the side wall of the rinsing container serves as air compensation for the air laden with moisture that flows out through the ceiling opening into the condensation chamber.

In einer weiteren Ausgestaltung der Erfindung ist die Schlauchverbindung in eine Regenerierdosierung geführt, die an einer Seitenwand des Spülbehälters angeordnet und einerseits mit der seitlichen Öffnung des Spülbehälters und andererseits mit der Außenluft verbunden ist.In a further embodiment of the invention, the hose connection is guided into a regeneration metering which is arranged on a side wall of the washing container and is connected on the one hand to the lateral opening of the washing container and on the other hand to the outside air.

In der Zeichnung ist in den Fig. 1 bis 4 ein Ausführungsbeispiel des Gegenstandes gemäß der Erfindung schematisch dargestellt.

  • Fig. 1 zeigt eine perspektivische Darstellung eines Spülbehälters einer Geschirrspülmaschine mit einer Kondensationskammer,
  • Fig. 2a und b zeigen die Kondensationskammer in einer Draufsicht und in einer Seitenansicht, zum Teil geschnitten
  • Fig. 3 zeigt eine Abwicklung eines von der Kondensationskammer gebildeten Luftkanals, und
  • Fig. 4 zeigt eine schematische Vorderansicht der gesamten Spülmaschine bei geöffneter Fronttür.
In the drawing, an embodiment of the object according to the invention is shown schematically in FIGS. 1 to 4.
  • 1 shows a perspective view of a washing container of a dishwasher with a condensation chamber,
  • 2a and b show the condensation chamber in a top view and in a side view, partly in section
  • Fig. 3 shows a development of an air duct formed by the condensation chamber, and
  • Fig. 4 shows a schematic front view of the entire dishwasher with the front door open.

Fig. 1 zeigt einen Spülbehälter 10, der an seiner Decke 10a mit einer Öffnung 11 zum Anschluß einer Kondensationskammer 12 versehen ist. Die U-förmig ausgebildete Kondensationskammer 12 ist über eine Schlauchverbindung 13 mit einer Regenerierdosierung 14 verbunden, die über einen nicht dargestellten Stutzen an eine weitere Öffnung 15 in einer Seitenwand 10b des Spülbehälters angeschlossen werden kann. Die Regenerierdosierung 14 ist über eine Auslaßöffnung 14b mit der Außenluft verbunden.Fig. 1 shows a washing container 10, which is provided on its ceiling 10a with an opening 11 for connecting a condensation chamber 12. The U-shaped condensation chamber 12 is connected via a hose connection 13 to a regeneration metering device 14, which can be connected to a further opening 15 in a side wall 10b of the washing container via a connection piece (not shown). The regeneration dosage 14 is connected via an outlet opening 14b connected to the outside air.

Die Kondensationskammer 12 ist gemäß Fig. 2 in Form eines U-förmigen Rechteckrohres ausgebildet und wird über ihren kurzen Schenkel 12a an die Öffnung 11 des Spülbehälters 10 angeschlossen. Im Anschlußbereich 16 (Fig. 2) ist dieser kurze Schenkel bodenseitig und deckenseitig mit Schrägen 17 versehen, die derart ausgerichtet sind, daß Spritzwasser aus dem Spülbehälter 10 in Richtung der Pfeile 18 wieder in den Spülbehälter zurück fließt. Ferner sind über den gesamten Verlauf der rohrförmigen Kondensationskammer Prallwände 19 vorgesehen, die sich von der Deckenseite 12c der Kondensationskammer 12 nach unten in Richtung auf den Boden 12d erstrecken. Deren Abstand 20, 21 zum Boden 12d wird in Richtung zum Rohrauslaß 22 immer kleiner. Durch die Prallwände 19 erhält die Kondensationskammer 12 an ihrer Oberseite eine sägezahnförmige Ausgestaltung. Im Bereich der Krümmung zwischen den beiden Schenkeln 12a, b ist die Kondensationskammer mit einer Ablauföffnung 12e versehen, an die der Schlauch 13 angeschlossen wird. Wie aus Fig. 2b zu erkennen ist, sind beide Schenkel 12a, b in Richtung auf die Ablauföffnung 12e geneigt.According to FIG. 2, the condensation chamber 12 is designed in the form of a U-shaped rectangular tube and is connected to the opening 11 of the washing compartment 10 via its short leg 12a. In the connection area 16 (FIG. 2), this short leg is provided on the bottom and on the ceiling with bevels 17 which are oriented in such a way that splash water flows from the washing container 10 in the direction of the arrows 18 back into the washing container. Furthermore, baffle walls 19 are provided over the entire course of the tubular condensation chamber and extend downward from the top side 12c of the condensation chamber 12 towards the bottom 12d. Their distance 20, 21 to the floor 12d becomes smaller and smaller in the direction of the pipe outlet 22. The baffle walls 19 give the condensation chamber 12 a sawtooth-shaped configuration on its upper side. In the region of the curvature between the two legs 12a, b, the condensation chamber is provided with a drain opening 12e to which the hose 13 is connected. As can be seen from Fig. 2b, both legs 12a, b are inclined towards the drain opening 12e.

Das an den Prallwänden 19 und an den Innenwänden der Kondensationskammer 12 entstehende und sich tropfenförmig sammelnde Kondensat fließt infolge der Neigung der Schenkel 12a, b zur Auslaßöffnung 12e und kann somit über den Verbindungsschlauch 13 und die Regenerierdosierung 14 in den Spülbehälter 10 zurück geführt werden. Die Ausbildung der Prallwände 19 und deren Abstände 20, 21 zur Bodenfläche 12d sind maßgebend für die Strömungsgeschwindigkeit des durch die freie Konvektion entstehenden Zuges. Um ein Verschließen durch das Kondensat zu vermeiden, dürfen die Spalte zwischen den Prallwänden 19 und dem Boden 12d jedoch nicht zu klein gemacht werden.The condensate which forms on the baffle walls 19 and on the inner walls of the condensation chamber 12 and collects in the form of drops flows due to the inclination of the legs 12a, b to the outlet opening 12e and can thus be fed back into the washing container 10 via the connecting hose 13 and the regeneration metering device 14. The design of the baffle walls 19 and their distances 20, 21 from the floor surface 12d are decisive for the flow rate due to the free convection emerging train. In order to prevent the condensate from closing, however, the gaps between the baffle walls 19 and the floor 12d must not be made too small.

Wie aus Fig. 4 zu erkennen ist, entweicht der bei der Aufheizung der Spülflotte entstehende Wrasen, gesättigte feuchte Luft und feinste Wassertröpfchen, während des Spülprozesses über die Belüftungsöffnung 11 an der Decke 10a des Spülbehälters 10 (Volumenvergrößerung der Luft durch Erwärmung). Dieser Wrasen durchflutet sodann die Kondensationskammer 12. Durch Temperaturunterschied und Prallwirkung wird dem Wrasen das Wasser entzogen, und die nur noch mit der Umgebungsluft vergleichbare, wenig angereicherte Luft 23 wird über den Auslaß 22 der Umgebung zugeführt.As can be seen from FIG. 4, the vapors produced during the heating up of the washing liquor, saturated moist air and very fine water droplets escape during the washing process via the ventilation opening 11 on the ceiling 10a of the washing container 10 (volume increase in the air due to heating). This vapor then flows through the condensation chamber 12. The water is removed from the vapor by the temperature difference and impact effect, and the air 23, which is only comparable with the ambient air, is supplied to the environment via the outlet 22.

In der Trockenphase wird in gleicher Art und Weise der im Spülbehälter 10 befindliche Wrasen über die Belüftungsöffnung 11 und die Kondensationskammer 12 abgeführt. Der hier entstehende Zug wird durch die Thermik der warmen Luft erzeugt. Ein Luftausgleich erfolgt über die weitere Belüftungsöffnung 15 in der Seitenwand 10b. Die eintretende Luft 24, die aus dem Motorraum über diese Belüftungsöffnung 15 in den Spülbehälter 10 gelangt, ist kälter und trockener als die im Spülbehälter 10 befindliche Luft. Dort angekommen, sinkt sie ab, erwärmt sich am heißen Geschirr 25 und steigt im Spülbehälter 10 auf (Pfeile 26). Dabei nimmt sie Wasser auf, das anschließend im Kondensator 12 wieder ausgeschieden wird. Das in der Kondensationskammer 12 ausgeschiedene Wasser wird über den Verbindungsschlauch 13, die Regenerierdosierung 14 und durch die Öffnung 15 in den Spülbehälter 10 zurück geführt. Um den Zug in der Kondensationskammer 12 zu unterstützen und zusätzlich eine Vermischung der Innenraumluft mit der Umgebungsluft und damit eine weitere Verringerung der Restfeuchte zu erhalten, wird ein Luftkanal zwischen dem Spülbehälter und einem diesen umgebenden Gehäuse 27 durch eine nicht dargestellte Freisparung der einzusetzenden Geräuschisolierung gebildet.In the dry phase, the vapors in the rinsing container 10 are removed in the same way via the ventilation opening 11 and the condensation chamber 12. The resulting draft is generated by the thermals of the warm air. Air is equalized via the further ventilation opening 15 in the side wall 10b. The incoming air 24, which reaches the washing compartment 10 from the engine compartment via this ventilation opening 15, is colder and drier than the air in the washing compartment 10. Once there, it sinks, heats up on hot dishes 25 and rises in the washing container 10 (arrows 26). It absorbs water, which is then excreted again in the condenser 12. The water excreted in the condensation chamber 12 is fed through the connecting hose 13, the regeneration dosage 14 and through the opening 15 into the Rinsing container 10 led back. In order to support the train in the condensation chamber 12 and in addition to obtain a mixing of the indoor air with the ambient air and thus a further reduction in the residual moisture, an air duct is formed between the rinsing container and a housing 27 surrounding it through a not shown saving of the noise insulation to be used.

Claims (8)

  1. Dish washing machine with a washing tank (10) and, arranged outside the washing tank, a condensation chamber (12) in the shape of a U, one of whose limbs (12a) is connected to an opening (11) of the washing tank (10) and whose other limb (12b) is led via an outlet (22) to the ambient air, with which by means of an appropriate construction of the condensation chamber (12) at least a part of the condensate forming can run back into the washing tank (10), characterised in that the opening (11) is arranged in the roof (10a) of the washing tank (10), that the U-shaped condensation chamber (12) extends with both limbs (12a, b) above the roof (10a) and in the curving region is provided with a run-off opening (12e) and that both limbs (12a, b) are inclined with respect to the roof (10a) in the direction towards the run-off opening (12e).
  2. Dish washing machine according to claim 1, characterised in that the condensation chamber (12) designed in the shape of a tube is constructed in the form of a funnel in the entrance region (16) close to the opening (11).
  3. Dish washing machine according to claim 2, characterised in that the entrance region (16) is provided on the base and roof ends with sloping surfaces (17).
  4. Dish washing machine according to any of the claims 1 to 3, characterised in that the condensation chamber (12) comprises baffles (19) extending downwards as far as possible vertically from its roof end (12c) and forming a separation interval (20, 21) to the base (12d).
  5. Dish washing machine according to claim 4, characterised in that the distances (20, 21) of the baffles (19) from the base (12d) decrease in the direction of progress towards the tube outlet (22).
  6. Dish washing machine according to any of the claims 1 to 5, characterised in that the outlet opening (12e) of the condensation chamber (12) is connected via a hose connection (13) to a further opening (15) in a side wall (10b) of the washing tank (10).
  7. Dish washing machine according to claim 6, characterised in that the hose connection (13) is led into a regeneration meter (14) which is arranged on one side (10b) of the washing tank (10) and is connected at one end to the side opening (15) of the washing tank (10) and at the other end to the outside air.
  8. Dish washing machine according to claim 1 or 2, characterised in that the condensation chamber (12) is constructed as a rectangular tube.
EP92116613A 1991-10-09 1992-09-29 Dishwasher Expired - Lifetime EP0536621B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4133417A DE4133417A1 (en) 1991-10-09 1991-10-09 DISHWASHER
DE4133417 1991-10-09

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EP0536621A1 EP0536621A1 (en) 1993-04-14
EP0536621B1 true EP0536621B1 (en) 1995-10-25

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1277413B1 (en) * 1995-08-02 1997-11-10 Candy Spa DEVICE FOR LIMITING STEAM OUTPUT FROM A WASHING MACHINE
DE19806700C2 (en) * 1998-02-18 2001-09-27 Whirlpool Co Arrangement for drying dishes in a dishwasher
IT247109Y1 (en) * 1999-11-02 2002-05-02 Candy Spa STEAM CONDENSING CHAMBER FOR DISHWASHER MACHINES
DE102007008827A1 (en) * 2007-02-22 2008-08-28 Premark Feg L.L.C., Wilmington Commercial dishwasher
ITTO20110943A1 (en) * 2011-10-19 2013-04-20 Indesit Co Spa DISHWASHER MACHINE
US10595706B2 (en) * 2014-07-23 2020-03-24 Whirlpool Corporation Dishwasher with air system
EP3597096B1 (en) * 2018-07-20 2023-06-28 Miele & Cie. KG Method for carrying out a drying program section in a dishwasher and dishwashing machine for carrying out the method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2503088C2 (en) * 1975-01-25 1982-06-24 Euro Hausgeräte GmbH, 6680 Neunkirchen Dishwasher aerators
SE468580B (en) * 1989-02-03 1993-02-15 Electrolux Ab DISHWASHER WITH CONDENSATION CHAMBER
DE9106598U1 (en) * 1991-05-29 1991-08-14 Bauknecht Hausgeraete Gmbh, 7000 Stuttgart, De

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Publication number Publication date
EP0536621A1 (en) 1993-04-14
DE4133417A1 (en) 1993-04-15
DE59204124D1 (en) 1995-11-30

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