EP1833351B1 - Dishwasher comprising a drying apparatus - Google Patents

Dishwasher comprising a drying apparatus Download PDF

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Publication number
EP1833351B1
EP1833351B1 EP05803399A EP05803399A EP1833351B1 EP 1833351 B1 EP1833351 B1 EP 1833351B1 EP 05803399 A EP05803399 A EP 05803399A EP 05803399 A EP05803399 A EP 05803399A EP 1833351 B1 EP1833351 B1 EP 1833351B1
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EP
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Prior art keywords
heat exchanger
flow channel
dishwasher
condensation surface
side wall
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EP05803399A
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German (de)
French (fr)
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EP1833351A1 (en
Inventor
Kai Paintner
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to PL05803399T priority Critical patent/PL1833351T3/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
    • A47L15/48—Drying arrangements
    • A47L15/483—Drying arrangements by using condensers

Definitions

  • the invention relates to a dishwasher having a rinsing container with a treatment chamber having at least two openings which are interconnected by a flow channel to which a first heat exchanger is associated with a condensation surface for the drying of moist air, which is filled after the final rinse with cold fresh water ,
  • a dishwasher with a rinsing container and a treatment space arranged therein which has an inlet opening and an outlet opening to which a flow channel is assigned.
  • a flow channel designed as a heat exchanger latent heat storage
  • a fan and a heating element is arranged in the flow channel designed as a heat exchanger latent heat storage.
  • humid air is supplied to the flow channel via the inlet opening by the blower or by convection.
  • the moist air flows through the heat exchanger and is dehumidified at the latent heat storage.
  • the air emerging from the latent heat storage passes through the heating element, where the dehumidified air is heated.
  • the unsaturated air After passing through the fan, the unsaturated air, whose moisture content has been reduced by condensation in the heat exchanger, is returned to the treatment room. There, the air continues to heat up by contact with the internals still heated during a previous rinsing process in the rinsing container and the material to be cleaned. As the temperature increases, the relative humidity of the air decreases. This allows the air to absorb moisture again and the cycle begins again.
  • the disadvantage is that the heat exchanger is arranged outside the treatment chamber and thus has no influence on the temperature of the side walls of the washing compartment. This has the consequence that the efficiency of the drying process is poor and the material to be cleaned still has moist spots after operation.
  • moist process air is conveyed from the washing compartment by an outwardly disposed downflow by means of a fan and returned via a junction box in the washing compartment of the washing compartment.
  • moist process air can enter the sump compartment of the dishwasher via a controllable bypass flap at the end of the drying process be blown off.
  • an outside air flow is sucked by means of a fan to an upflow line and conveyed upwards in it. This upward flowing cooling air flow flows in the upflow line in the opposite direction to the downflowing process airflow in the downflow line through a countercurrent heat exchanger.
  • the sucked cooling air flows over a knee back down into a channel, from which it finally opens into the base space of the dishwasher.
  • This channel is separated both above the heat exchanger as in its area only by a metal wall from the washing compartment to cool the Spülraum workede surface of this wall, which favors the condensation along this surface.
  • the channel can adjoin directly to the line of the heat exchanger which carries the process air downwards in order to also contribute to the cooling of this process air.
  • the invention has for its object to improve a dishwasher according to the preamble of claim 1 with simple constructive measures.
  • At least one condensation surface of a second heat exchanger which is filled with cold fresh water after the rinsing process, is arranged on at least one side wall, rear wall or ceiling of the washing.
  • the drying process is improved by condensation that is lowered by the second heat exchanger, which is filled with cold fresh water after a final rinse, the temperature of the side wall and thus it serves as a condensation surface.
  • the moist air can now also condense on the side wall of the treatment chamber through the second heat exchanger.
  • At least one condensation surface of the second heat exchanger is formed as a side wall of the flow channel.
  • At least one condensation surface of the second heat exchanger is arranged on a side wall of the flow channel.
  • the first heat exchanger is formed as an integral part of the flow channel. This solution is particularly characterized by the fact that the assembly effort is low, since only one component is mounted.
  • the first heat exchanger is designed as a latent heat storage.
  • At least one condensation surface of the first heat exchanger is arranged on at least one side wall of the washing container.
  • At least one condensation surface of the first heat exchanger is arranged on at least one side wall of the flow channel.
  • At least one condensation surface of the first heat exchanger is formed as a side wall of the flow channel.
  • the condensation surface of the first heat exchanger is smaller than the condensation surface of the second heat exchanger.
  • a drainage device for the condensate is arranged in the flow channel.
  • This arrangement prevents the condensate running back into the washing and increases the moisture content of the air.
  • a fan is arranged in the flow channel.
  • the single FIGURE shows a sectional view from the front of a dishwasher shown schematically, at the washing compartment a first heat exchanger and a flow channel associated with a second heat exchanger is arranged.
  • a dishwasher 1 with a washing container 2 is shown, which has a stainless steel, or alternatively plastic molded inner shell 3 for lining a treatment chamber 4.
  • the inner shell has on a first side wall 5 and on a second side wall 6 guide rails, not shown, on which trained as a storage container 7 baskets are held extendable.
  • the storage containers 7 are not intended for storage shown Guts to be cleaned and are wetted by a spray device, not shown.
  • the treatment space 4 has two openings 8, 8 ', namely an inlet opening 8 and an outlet opening 8', which are connected to one another by means of a flow channel 9.
  • a blower 10 arranged in the flow channel 9 the moist air forming during operation is sucked through the inlet opening 8.
  • the blower 10 is arranged immediately behind the inlet opening 8. But it may also be quite appropriate to arrange the fan 10 at a different location of the flow channel 9. Further, in the flow channel 9, a heater 11 is arranged, which is located in the vicinity of the outlet opening 8 '. It may well be meaningful that the heater 11 is also arranged at a different location in the flow channel 9. Furthermore, a flow device, not shown, is arranged in the flow channel 9, which dissipates the condensate formed in the flow channel 9 into the treatment chamber 4. In order to improve the drying process, the flow channel 9, a first heat exchanger 12, which may alternatively be formed as a latent heat storage, associated with a condensation surface.
  • the outside of the treatment chamber 4 arranged first heat exchanger 12 is formed integrally with a side wall 12 'of the flow channel 9.
  • the flow channel 9 can also be designed as a self-sufficient component, which is arranged on the first heat exchanger 12.
  • Another possibility is to integrate the flow channel 9 in the first heat exchanger 12.
  • the first heat exchanger 12 is arranged on the side wall 5 of the washing container 2 in order to form a condensation surface in the treatment space 4.
  • a second heat exchanger 13, which likewise forms a further condensation surface in the treatment space 4 is arranged outside the treatment space 4 on the second side wall 6. It may well be appropriate to arrange the second heat exchanger 13 on a rear wall, not shown, or on a ceiling 14 of the washing container 2.
  • An additional third or fourth heat exchanger could improve the drying process, if they are arranged on a rear wall, not shown, on a ceiling wall 14 or under a bottom 15 of the washing compartment 2.
  • the heat exchangers 12,13 are formed from plastic. Not shown side walls of the first heat exchanger 12 and the second heat exchanger 13, which serve as contact surfaces to other components are formed of a thin-walled plastic film, when the first Heat exchanger 12 and the second heat exchanger 13 are not formed as latent heat storage.
  • the dishwasher 1 has a control and regulating device, not shown, which stores various operating programs, in particular the program pre-rinsing - cleaning - intermediate rinsing - rinsing - drying. After rinsing the temperature in the treatment chamber is about 60 °, since the drying process is improved by the second heat exchanger 13 and not so high temperatures are needed.
  • the first heat exchanger 12 and the second heat exchanger 13 are filled with cold fresh water after the final rinse operation, so that a condensation surface forms on the side wall 5 and on the side wall 6 of the treatment chamber 4 , The moist air condenses on the side wall 5 and the side wall 6 and the condensate flows to this in a drain, not shown.
  • the drying process is improved when a fan 10 sucks the moist air through the inlet port 8. Since the flow channel 9 is formed as an integral part of the first heat exchanger 12, condensate also forms in the flow channel, which is discharged through the drain device, not shown.
  • the dehumidified air flows through the heater 10 disposed in the flow channel 9, where the dehumidified air is heated to resume moisture. Dry and hot air passes through the outlet opening 8 'back into the treatment room 4, where it can absorb the moisture that is disposed on the material to be cleaned and in the treatment room 4 again.
  • the cycle now begins again from the beginning, as is sucked through the inlet opening 8 by means of the blower 10, the moist, saturated air again.

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

Abstract

The aim of the invention is to improve the drying process of a dishwasher (1). Said aim is achieved by assigning a first heat exchanger (12) and a second heat exchanger (13) to the dishwasher. A flow duct (9) encompassing a heater (11) and a fan (10) is allocated to the first heat exchanger (12) while the second heat exchanger (13) is positioned on at least one sidewall (5, 6) of the washing container (2).

Description

Die Erfindung betrifft eine Geschirrspülmaschine aufweisend einen Spülbehälter mit einem Behandlungsraum, der mindestens zwei Öffnungen aufweist, die durch einen Strömungskanal miteinander verbunden sind, dem zur Trocknung von feuchter Luft ein erster Wärmetauscher mit einer Kondensationsfläche zugeordnet ist, der nach dem Klarspülvorgang mit kaltem Frischwasser befüllt wird.The invention relates to a dishwasher having a rinsing container with a treatment chamber having at least two openings which are interconnected by a flow channel to which a first heat exchanger is associated with a condensation surface for the drying of moist air, which is filled after the final rinse with cold fresh water ,

Aus der Offenlegungsschrift DE 3741652 A1 ist eine Geschirrspülmaschine mit einem Spülbehälter und einem darin angeordneten Behandlungsraum bekannt, der eine Einlassöffnung und eine Auslassöffnung aufweist, denen einen Strömungskanal zugeordnet ist. In dem Strömungskanal ist ein als Wärmetauscher ausgebildeter Latentwärmespeicher, ein Gebläse und ein Heizelement angeordnet. Während eines Trocknungsvorgangs wird durch das Gebläse oder durch Eigenkonvektion feuchte Luft über die Einlassöffnung dem Strömungskanal zugeführt. Die feuchte Luft strömt durch den Wärmetauscher und wird am Latentwärmespeicher entfeuchtet. Die aus dem Latentwärmespeicher austretende Luft passiert das Heizelement, wo die entfeuchtete Luft aufgeheizt wird. Nach Passieren des Gebläses wird die ungesättigte Luft, deren Feuchtegehalt durch Kondensation im Wärmetauscher verringert wurde, in den Behandlungsraum zurückgeführt. Dort erwärmt die Luft sich weiter durch Kontakt mit dem während eines vorangegangenen Spülvorgangs noch erwärmten Einbauten im Spülbehälter und dem zu reinigenden Gut. Mit steigender Temperatur sinkt dabei die relative Feuchte der Luft. Dadurch kann die Luft wieder Feuchtigkeit aufnehmen und der Kreislauf beginnt von vorne.
Nachteilig ist jedoch, dass der Wärmetauscher außerhalb des Behandlungsraums angeordnet ist und somit keinen Einfluss auf die Temperatur der Seitenwände des Spülbehälters hat. Dies hat zur Folge das der Wirkungsgrad des Trocknungsvorgangs schlecht ist und das zu reinigende Gut nach dem Betrieb noch feuchte Stellen aufweist.From the publication DE 3741652 A1 For example, a dishwasher with a rinsing container and a treatment space arranged therein is known which has an inlet opening and an outlet opening to which a flow channel is assigned. In the flow channel designed as a heat exchanger latent heat storage, a fan and a heating element is arranged. During a drying process, humid air is supplied to the flow channel via the inlet opening by the blower or by convection. The moist air flows through the heat exchanger and is dehumidified at the latent heat storage. The air emerging from the latent heat storage passes through the heating element, where the dehumidified air is heated. After passing through the fan, the unsaturated air, whose moisture content has been reduced by condensation in the heat exchanger, is returned to the treatment room. There, the air continues to heat up by contact with the internals still heated during a previous rinsing process in the rinsing container and the material to be cleaned. As the temperature increases, the relative humidity of the air decreases. This allows the air to absorb moisture again and the cycle begins again.
The disadvantage, however, is that the heat exchanger is arranged outside the treatment chamber and thus has no influence on the temperature of the side walls of the washing compartment. This has the consequence that the efficiency of the drying process is poor and the material to be cleaned still has moist spots after operation.

Beim Geschirrspüler der CH 693 494 A4 wird feuchte Prozessluft aus dessen Spülbehälter durch eine außen angeordnete Abwärtsleitung mittels eines Ventilators befördert und über eine Verteilerdose in den Spülraum des Spülbehälters zurückgeführt. Fallweise kann über eine steuerbare Bypassklappe am Schluss des Trocknungsprozesses feuchte Prozessluft in den Sockelraum des Geschirrspülers abgeblasen werden. Zum Abkühlen des abwärts strömenden Prozessluftstroms wird ein Außenluftstrom mittels eines Ventilators zu einer Aufwärtsleitung angesaugt und in ihr aufwärts befördert. Dieser aufwärts fließende Kühlluftstrom strömt in der Aufwärtsleitung in entgegengesetzte Richtung zum abwärts strömenden Prozessluftstrom in der Abwärtsleitung durch einen Gegenstrom-Wärmetauscher. Nach dem Durchgang durch den Wärmetauscher fließt die angesaugte Kühlluft über ein Knie wieder abwärts in einen Kanal, aus dem sie schließlich in den Sockelraum des Geschirrspülers einmündet. Dieser Kanal ist sowohl oberhalb des Wärmetauschers wie in dessen Bereich nur durch eine Metallwandung vom Spülraum getrennt, um die spülraumseitige Fläche dieser Wandung zu kühlen, was die Kondensation längs dieser Fläche begünstigt. Auf seiner vom Spülraum abgewandten Seite kann der Kanal direkt an der die Prozessluft nach unten befördernden Leitung des Wärmetauschers angrenzen, um auch zur Kühlung dieser Prozessluft beizutragen.When the dishwasher CH 693 494 A4 moist process air is conveyed from the washing compartment by an outwardly disposed downflow by means of a fan and returned via a junction box in the washing compartment of the washing compartment. At times, moist process air can enter the sump compartment of the dishwasher via a controllable bypass flap at the end of the drying process be blown off. For cooling the downflowing process air flow, an outside air flow is sucked by means of a fan to an upflow line and conveyed upwards in it. This upward flowing cooling air flow flows in the upflow line in the opposite direction to the downflowing process airflow in the downflow line through a countercurrent heat exchanger. After passing through the heat exchanger, the sucked cooling air flows over a knee back down into a channel, from which it finally opens into the base space of the dishwasher. This channel is separated both above the heat exchanger as in its area only by a metal wall from the washing compartment to cool the Spülraumseitige surface of this wall, which favors the condensation along this surface. On its side facing away from the washing compartment, the channel can adjoin directly to the line of the heat exchanger which carries the process air downwards in order to also contribute to the cooling of this process air.

Der Erfindung liegt die Aufgabe zugrunde eine Geschirrspülmaschine gemäß dem Oberbegriff des Anspruchs 1 mit einfachen konstruktiven Maßnahmen zu verbessern.The invention has for its object to improve a dishwasher according to the preamble of claim 1 with simple constructive measures.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, dass mindestens eine Kondensationsfläche eines zweiten Wärmetauschers, der mit kaltem Frischwasser nach dem Spülvorgang befüllt wird, an mindestens einer Seitenwand, Rückwand oder Decke des Spülbehälters angeordnet ist.This object is achieved according to the invention in that at least one condensation surface of a second heat exchanger, which is filled with cold fresh water after the rinsing process, is arranged on at least one side wall, rear wall or ceiling of the washing.

Durch diese Anordnung wird der Trocknungsvorgang durch Kondensation dadurch verbessert, dass durch den zweiten Wärmetauscher, der mit kaltem Frischwasser nach einem Klarspülvorgang befüllt wird, die Temperatur der Seitenwand abgesenkt wird und damit diese als Kondensationsfläche dient. Zusätzlich zu dem ersten Wärmetauscher, der der Luft Feuchtigkeit entzieht, kann nun an der Seitenwand des Behandlungsraums durch den zweiten Wärmetauscher die feuchte Luft ebenfalls auskondensieren. Durch den Einsatz des zweiten Wärmetauschers wird somit der Trocknungsvorgang nicht nur zeitlich verkürzt, sondern auch effektiver gestaltet. Ferner wird schon im vorhergehenden Klarspülgang die Temperaturen herabgesenkt, da durch den zweiten Wärmetauscher der Trocknungsvorgang verbessert wird und niedrigere Temperaturen ausreichen, um das zu reinigende Gut zu trocknen. Darüber hinaus wirkt sich die niedrigere Temperatur im Klarspülvorgang schonend auf das zu reinigende Gut aus.By this arrangement, the drying process is improved by condensation that is lowered by the second heat exchanger, which is filled with cold fresh water after a final rinse, the temperature of the side wall and thus it serves as a condensation surface. In addition to the first heat exchanger, which extracts moisture from the air, the moist air can now also condense on the side wall of the treatment chamber through the second heat exchanger. Through the use of the second heat exchanger thus the drying process is not only shortened in time, but also made more effective. Furthermore, the temperatures are lowered already in the previous rinse, since the drying process is improved by the second heat exchanger and lower temperatures sufficient to dry the material to be cleaned. In addition, the lower temperature in the final rinse process has a gentle effect on the material to be cleaned.

Nach einer bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass mindestens eine Kondensationsfläche des zweiten Wärmetauschers als eine Seitenwand des Strömungskanals ausgebildet ist. Diese Lösung bietet den Vorteil, dass der zweite Wärmetauscher den Trocknungsvorgang im Strömungskanal unterstützt und verbessert. Ferner ist diese Lösung in ihren Herstellungskosten sehr kostengünstig.According to a preferred embodiment of the subject matter of the invention, it is provided that at least one condensation surface of the second heat exchanger is formed as a side wall of the flow channel. This solution offers the advantage that the second heat exchanger supports and improves the drying process in the flow channel. Furthermore, this solution is very cost-effective in their production costs.

Nach einer alternativen Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass mindestens eine Kondensationsfläche des zweiten Wärmetauschers an einer Seitenwand des Strömungskanals angeordnet ist.
Diese Lösung zeichnet sich besonders dadurch aus, dass der Montageaufwand sehr gering ist. Ferner wird der Trocknungsvorgang in dem Strömungskanal durch den zweiten Wärmetauscher verbessert, wodurch das zu reinigende Gut nach dem Betrieb trocken aus dem Spülbehälter entfernt wird.According to an alternative embodiment of the object of the invention it is provided that at least one condensation surface of the second heat exchanger is arranged on a side wall of the flow channel.
This solution is particularly characterized by the fact that the installation effort is very low. Furthermore, the drying process is improved in the flow channel through the second heat exchanger, whereby the material to be cleaned is removed after operation dry from the washing.

Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass der erste Wärmetauscher als integraler Bestandteil des Strömungskanals ausgebildet ist.
Diese Lösung zeichnet sich besonders dadurch aus, dass der Montageaufwand gering, da nur ein Bauteil montiert wird.According to a further preferred embodiment of the object of the invention it is provided that the first heat exchanger is formed as an integral part of the flow channel.
This solution is particularly characterized by the fact that the assembly effort is low, since only one component is mounted.

Gemäß einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung ist vorgesehen, dass der erste Wärmetauscher als ein Latentwärmespeicher ausgebildet ist.According to a further advantageous embodiment of the object of the invention it is provided that the first heat exchanger is designed as a latent heat storage.

Der wesentliche Vorteil dieser Lösung ist, dass Latentwärmespeicher bei sehr geringer Temperaturdifferenz eine relativ große Wärmemenge pro Speichervolumen aufnehmen und diese Energie über einen beliebigen Zeitraum verlustfrei speichern. Ein weiterer Vorteil besteht darin, dass die im Latentwärmespeicher gespeicherte Energie für den nächsten Spülgang verwendet wird.The main advantage of this solution is that latent heat storage with very low temperature difference record a relatively large amount of heat per storage volume and store this energy lossless over any period. Another advantage is that the energy stored in the latent heat storage is used for the next rinse cycle.

Gemäß einer alternativen Ausgestaltung des Gegenstandes der Erfindung kann vorgesehen sein, dass mindestens eine Kondensationsfläche des ersten Wärmetauschers an mindestens einer Seitenwand des Spülbehälters angeordnet ist.
Diese Lösung bietet den Vorteil, dass der erste Wärmetauscher eine weitere Kondensationsfläche an der Seitenwand des Behandlungsraumes bildet und gleichzeitig den Trocknungsvorgang in dem Strömungskanal unterstützt.According to an alternative embodiment of the subject matter of the invention, it can be provided that at least one condensation surface of the first heat exchanger is arranged on at least one side wall of the washing container.
This solution offers the advantage that the first heat exchanger forms a further condensation surface on the side wall of the treatment chamber and at the same time supports the drying process in the flow channel.

Nach einer vorteilhaften Weiterbildung des Gegenstandes der Erfindung ist vorgesehen, dass mindestens eine Kondensationsfläche des ersten Wärmetauschers an mindestens einer Seitenwand des Strömungskanals angeordnet ist.
Diese Lösung bietet den Vorteil, dass der erste Wärmetauscher den Trocknungsvorgang im Strömungskanal unterstützt und dadurch die Trocknungszeit verkürzt wird.According to an advantageous development of the subject matter of the invention, it is provided that at least one condensation surface of the first heat exchanger is arranged on at least one side wall of the flow channel.
This solution has the advantage that the first heat exchanger supports the drying process in the flow channel and thus the drying time is shortened.

Nach einer alternativen vorteilhaften Weiterbildung des Gegenstandes der Erfindung ist vorgesehen, dass mindestens eine Kondensationsfläche des ersten Wärmetauscher als eine Seitenwand des Strömungskanals ausgebildet ist.
Diese Lösung zeichnet sich besonders dadurch aus, dass die Herstellungskosten für den Wärmetauscher sehr kostengünstig sind. Ferner wird bei der Montage des Wärmetauschers auf einen weiteren Arbeitsschritt verzichtet, da der Strömungskanal mit dem Wärmetauscher einteilig ausgebildet ist.According to an alternative advantageous development of the subject matter of the invention, it is provided that at least one condensation surface of the first heat exchanger is formed as a side wall of the flow channel.
This solution is characterized in particular by the fact that the production costs for the heat exchanger are very cost-effective. Further, in the assembly of the heat exchanger dispensed with a further step, since the flow channel is formed integrally with the heat exchanger.

Nach einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass die Kondensationsfläche des ersten Wärmetauschers kleiner als die Kondensationsfläche des zweiten Wärmetauschers ausgebildet ist.According to a further preferred embodiment of the object of the invention, it is provided that the condensation surface of the first heat exchanger is smaller than the condensation surface of the second heat exchanger.

Diese Lösung bietet den Vorteil, dass die Materialkosten zur Herstellung des ersten Wärmetauschers minimal sind.This solution offers the advantage that the material costs for producing the first heat exchanger are minimal.

Nach einer weiteren vorteilhaften Ausgestaltung des Gegenstandes der Erfindung ist vorgesehen, dass in dem Strömungskanal eine Ablaufvorrichtung für das Kondensat angeordnet ist.According to a further advantageous embodiment of the subject invention, it is provided that in the flow channel, a drainage device for the condensate is arranged.

Durch diese Anordnung wird verhindert, dass das Kondensat wieder zurück in den Spülbehälter läuft und den Feuchtegehalt der Luft erhöht.This arrangement prevents the condensate running back into the washing and increases the moisture content of the air.

Nach einer weiteren vorteilhaften Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass in dem Strömungskanal eine Heizung angeordnet ist.
Diese Lösung bietet den Vorteil, dass die Luft aufgeheizt wird und somit in der Lage ist, wieder Feuchtigkeit im Behandlungsraum aufzunehmen.According to a further advantageous embodiment of the object of the invention it is provided that in the flow channel a heater is arranged.
This solution has the advantage that the air is heated and thus is able to absorb moisture in the treatment room again.

Nach einer weiteren vorteilhaften Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, dass in dem Strömungskanal ein Gebläse angeordnet ist.
Durch diese Maßnahme gelingt es, die feuchte Luft aus dem Behandlungsraum in den Strömungskanal zu führen. Der Volumenstrom wird durch das Gebläse erhöht, so dass zusätzlich zu der Eigenkonvektion die feuchte Luft dem Strömungskanal zugeführt wird.According to a further advantageous embodiment of the object of the invention, it is provided that a fan is arranged in the flow channel.
By this measure, it is possible to guide the moist air from the treatment room in the flow channel. The volume flow is increased by the fan, so that in addition to the Eigenkonvektion the moist air is supplied to the flow channel.

Die Erfindung ist in einer nachfolgenden Beschreibung anhand eines in der Zeichnung vereinfacht dargestellten Ausführungsbeispiels erläutert.The invention is explained in a following description with reference to an embodiment shown in simplified form in the drawing.

Die einzige Figur zeigt in Schnittdarstellung von vorne eine schematisch dargestellte Geschirrspülmaschine, an deren Spülbehälter ein erster Wärmetauscher und ein einem Strömungskanal zugeordneter zweiter Wärmetauscher angeordnet ist.The single FIGURE shows a sectional view from the front of a dishwasher shown schematically, at the washing compartment a first heat exchanger and a flow channel associated with a second heat exchanger is arranged.

In der Figur ist eine erfindungsgemäße Geschirrspülmaschine 1 mit einem Spülbehälter 2 gezeigt, der einen aus Edelstahl, oder alternativ aus Kunststoff geformten Innenmantel 3 zur Auskleidung eines Behandlungsraumes 4 aufweist. Der Innenmantel weist an einer ersten Seitenwand 5 und an einer zweiten Seitenwand 6 nicht dargestellte Führungsschienen auf, an denen als Lagerungsbehälter 7 ausgebildete Geschirrkörbe ausziehbar gehalten sind. Die Lagerungsbehälter 7 dienen zur Aufbewahrung eines nicht gezeigten zu reinigenden Guts und werden von einer nicht dargestellten Sprühvorrichtung benetzt. Der Behandlungsraum 4 weist zwei Öffnungen 8,8' auf und zwar eine Einlassöffnung 8 und eine Auslassöffnung 8', die mittels eines Strömungskanals 9 miteinander verbunden sind. Durch die Einlassöffnung 8 wird mittels eines im Strömungskanal 9 angeordneten Gebläses 10 die sich während des Betriebes bildende feuchte Luft angesaugt. Das Gebläse 10 ist unmittelbar hinter der Einlassöffnung 8 angeordnet. Es kann aber auch durchaus zweckmäßig sein, das Gebläse 10 an einem anderen Ort des Strömungskanals 9 anzuordnen. Ferner ist im Strömungskanal 9 eine Heizung 11 angeordnet, die sich im Nahbereich der Auslassöffnung 8' befindet. Es kann durchaus sinnvoll sein, dass die Heizung 11 auch an einem anderen Ort im Strömungskanal 9 angeordnet ist. Des Weiteren ist im Strömungskanal 9 eine nicht gezeigte Ablaufvorrichtung angeordnet, die das im Strömungskanal 9 entstehende Kondensat in den Behandlungsraum 4 abführt.
Um den Trocknungsvorgang zu verbessern, ist dem Strömungskanal 9 ein erster Wärmetauscher 12, der alternativ auch als Latentwärmespeicher ausgebildet sein kann, mit einer Kondensationsfläche zugeordnet. Der außerhalb des Behandlungsraums 4 angeordnete erste Wärmetauscher 12 ist mit einer Seitenwand 12' des Strömungskanals 9 einteilig ausgebildet. Alternativ kann der Strömungskanal 9 aber auch als ein autarkes Bauteil ausgebildet sein, welches an den ersten Wärmetauscher 12 angeordnet ist. Eine weitere Möglichkeit ist, den Strömungskanal 9 in den ersten Wärmtauscher 12 zu integrieren. Ferner ist der erste Wärmetauscher 12 an der Seitenwand 5 des Spülbehälters 2 angeordnet, um eine Kondensationsfläche im Behandlungsraum 4 zu bilden. Des Weiteren ist außerhalb des Behandlungsraums 4 an der zweiten Seitenwand 6 ein zweiter Wärmetauscher 13 angeordnet, der ebenfalls eine weitere Kondensationsfläche im Behandlungsraum 4 bildet. Es kann durchaus zweckmäßig sein, den zweiten Wärmetauscher 13 an einer nicht dargestellten Rückwand oder auf einer Decke 14 des Spülbehälters 2 anzuordnen. Auch ein zusätzlich dritter oder vierter Wärmetauscher könnte den Trocknungsvorgang verbessern, wenn diese an einer nicht gezeigten Rückwand, an einer Deckenwand 14 oder unter einem Boden 15 des Spülbehälters 2 angeordnet sind. Vorzugsweise sind die Wärmetauscher 12,13 aus Kunststoff gebildet. Nicht näher dargestellte Seitenwände des ersten Wärmetauschers 12 und des zweiten Wärmetauschers 13, die als Kontaktflächen zu anderen Bauteilen dienen, sind aus einer dünnwandigen Kunststofffolie ausgebildet, wenn der erste Wärmetauscher 12 und der zweite Wärmetauscher 13 nicht als Latentwärmespeicher ausgebildet sind.In the figure, a dishwasher 1 according to the invention with a washing container 2 is shown, which has a stainless steel, or alternatively plastic molded inner shell 3 for lining a treatment chamber 4. The inner shell has on a first side wall 5 and on a second side wall 6 guide rails, not shown, on which trained as a storage container 7 baskets are held extendable. The storage containers 7 are not intended for storage shown Guts to be cleaned and are wetted by a spray device, not shown. The treatment space 4 has two openings 8, 8 ', namely an inlet opening 8 and an outlet opening 8', which are connected to one another by means of a flow channel 9. By means of a blower 10 arranged in the flow channel 9, the moist air forming during operation is sucked through the inlet opening 8. The blower 10 is arranged immediately behind the inlet opening 8. But it may also be quite appropriate to arrange the fan 10 at a different location of the flow channel 9. Further, in the flow channel 9, a heater 11 is arranged, which is located in the vicinity of the outlet opening 8 '. It may well be meaningful that the heater 11 is also arranged at a different location in the flow channel 9. Furthermore, a flow device, not shown, is arranged in the flow channel 9, which dissipates the condensate formed in the flow channel 9 into the treatment chamber 4.
In order to improve the drying process, the flow channel 9, a first heat exchanger 12, which may alternatively be formed as a latent heat storage, associated with a condensation surface. The outside of the treatment chamber 4 arranged first heat exchanger 12 is formed integrally with a side wall 12 'of the flow channel 9. Alternatively, however, the flow channel 9 can also be designed as a self-sufficient component, which is arranged on the first heat exchanger 12. Another possibility is to integrate the flow channel 9 in the first heat exchanger 12. Furthermore, the first heat exchanger 12 is arranged on the side wall 5 of the washing container 2 in order to form a condensation surface in the treatment space 4. Furthermore, a second heat exchanger 13, which likewise forms a further condensation surface in the treatment space 4, is arranged outside the treatment space 4 on the second side wall 6. It may well be appropriate to arrange the second heat exchanger 13 on a rear wall, not shown, or on a ceiling 14 of the washing container 2. An additional third or fourth heat exchanger could improve the drying process, if they are arranged on a rear wall, not shown, on a ceiling wall 14 or under a bottom 15 of the washing compartment 2. Preferably, the heat exchangers 12,13 are formed from plastic. Not shown side walls of the first heat exchanger 12 and the second heat exchanger 13, which serve as contact surfaces to other components are formed of a thin-walled plastic film, when the first Heat exchanger 12 and the second heat exchanger 13 are not formed as latent heat storage.

Die Geschirrspülmaschine 1 weist eine nicht gezeigte Steuer- und Regelungseinrichtung auf, die verschiedenen Betriebsprogramme, insbesondere das Programm Vorspülen - Reinigen - Zwischenspülen - Klarspülen - Trocknen speichert. Nach dem Klarspülvorgang beträgt die Temperatur im Behandlungsraum ca. 60°, da der Trocknungsvorgang durch den zweiten Wärmetauscher 13 verbessert wird und nicht mehr so hohe Temperaturen benötigt werden. Um nun der im Behandlungsraum 4 befindlichen feuchten Luft die Feuchtigkeit zu entziehen, wird nach dem Klarspülvorgang der erste Wärmetauscher 12 und der zweite Wärmetauscher 13 mit kaltem Frischwasser befüllt, so dass sich eine Kondensationsfläche an der Seitenwand 5 und an der Seitenwand 6 des Behandlungsraums 4 bildet. Die feuchte Luft kondensiert an der Seitenwand 5 und der Seitenwand 6 aus und das Kondensat fließt an diesen in einen nicht gezeigten Abfluss. Ebenfalls bildet sich unerwünschtes Kondensat am zu reinigenden Gut. Der Trocknungsvorgang wird verbessert, wenn ein Gebläse 10 die feuchte Luft durch die Einlassöffnung 8 ansaugt. Da der Strömungskanal 9 als integraler Bestandteil des ersten Wärmetauschers 12 ausgebildet ist, bildet sich ebenfalls Kondensat im Strömungskanal, welches durch die nicht gezeigte Ablaufvorrichtung abgeführt wird. Die entfeuchtete Luft strömt durch die im Strömungskanal 9 angeordnete Heizung 10, wo die entfeuchtete Luft erhitzt wird, um wieder Feuchtigkeit aufzunehmen. Trockne und heiße Luft gelangt über die Auslassöffnung 8' wieder zurück in den Behandlungsraum 4, wo sie die Feuchtigkeit, die an dem zu reinigenden Gut und im Behandlungsraum 4 angeordnet ist, wieder aufnehmen kann. Der Kreislauf beginnt nun wieder von vorne, da durch die Einlassöffnung 8 mittels des Gebläses 10 die feuchte, gesättigte Luft wieder angesaugt wird.The dishwasher 1 has a control and regulating device, not shown, which stores various operating programs, in particular the program pre-rinsing - cleaning - intermediate rinsing - rinsing - drying. After rinsing the temperature in the treatment chamber is about 60 °, since the drying process is improved by the second heat exchanger 13 and not so high temperatures are needed. In order to remove moisture from the humid air in the treatment chamber 4, the first heat exchanger 12 and the second heat exchanger 13 are filled with cold fresh water after the final rinse operation, so that a condensation surface forms on the side wall 5 and on the side wall 6 of the treatment chamber 4 , The moist air condenses on the side wall 5 and the side wall 6 and the condensate flows to this in a drain, not shown. Also forms undesirable condensate on the material to be cleaned. The drying process is improved when a fan 10 sucks the moist air through the inlet port 8. Since the flow channel 9 is formed as an integral part of the first heat exchanger 12, condensate also forms in the flow channel, which is discharged through the drain device, not shown. The dehumidified air flows through the heater 10 disposed in the flow channel 9, where the dehumidified air is heated to resume moisture. Dry and hot air passes through the outlet opening 8 'back into the treatment room 4, where it can absorb the moisture that is disposed on the material to be cleaned and in the treatment room 4 again. The cycle now begins again from the beginning, as is sucked through the inlet opening 8 by means of the blower 10, the moist, saturated air again.

Claims (12)

  1. Dishwasher (1) comprising a rinsing container (2) with a treatment chamber (4) having at least two openings (8, 8') connected together by a flow channel (9), with which for drying of moist air a first heat exchanger (12) with a condensation surface is associated, characterised in that the first heat exchanger (1) is filled with cold fresh water after the clear rinsing process and that at least one condensation surface of the second heat exchanger (13) is present, which is filled with cold fresh water after the clear rinsing process, and is arranged at least one side wall (5, 6), back wall or ceiling (14) of the rinsing container (2).
  2. Dishwasher (1) according to claim 1, characterised in that at least one condensation surface of the second heat exchanger (13) is constructed as a side wall (12') of the flow channel (9).
  3. Dishwasher (1) according to claim 1, characterised in that at least one condensation surface of the second heat exchanger (13) is arranged at a side wall of the flow channel (9).
  4. Dishwasher (1) according to any one of claims 1 to 3, characterised in that the first heat exchanger (12) is constructed as an integral component of the flow channel (9).
  5. Dishwasher (1) according to claim 4, characterised in that the first heat exchanger (12) is constructed as a latent heat store.
  6. Dishwasher (1) according to claim 1, characterised in that at least one condensation surface of the first heat exchanger (12) is arranged at at least one side wall (5, 6) of the rinsing container (2).
  7. Dishwasher (1) according to claim 6, characterised in that at least one condensation surface of the first heat exchanger (12) is arranged at at least one side wall (12') of the flow channel (9).
  8. Dishwasher (1) according to claim 6, characterised in that at least one condensation surface of the first heat exchanger (12) is constructed as a side wall (12') of the flow channel.
  9. Dishwasher (1) according to any one of claims 1 to 8, characterised in that the condensation surface of the first heat exchanger (12) is constructed to be smaller than the condensation surface of the second heat exchanger (13).
  10. Dishwasher (1) according to any one of claims 1 to 9, characterised in that an outflow device for the condensate is arranged in the flow channel (9).
  11. Dishwasher (1) according to any one of claims 1 to 10, characterised in that a heater (11) is arranged in the flow channel (9).
  12. Dishwasher (1) according to any one of claims 1 to 11, characterised in that a fan (10) is arranged in the flow channel (9).
EP05803399A 2004-12-27 2005-10-25 Dishwasher comprising a drying apparatus Active EP1833351B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05803399T PL1833351T3 (en) 2004-12-27 2005-10-25 Dishwasher comprising a drying apparatus

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004062748 2004-12-27
DE102005012114A DE102005012114A1 (en) 2004-12-27 2005-03-16 Dishwasher with a drying device
PCT/EP2005/055520 WO2006069837A1 (en) 2004-12-27 2005-10-25 Dishwasher comprising a drying apparatus

Publications (2)

Publication Number Publication Date
EP1833351A1 EP1833351A1 (en) 2007-09-19
EP1833351B1 true EP1833351B1 (en) 2010-07-07

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EP05803399A Active EP1833351B1 (en) 2004-12-27 2005-10-25 Dishwasher comprising a drying apparatus

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EP (1) EP1833351B1 (en)
AT (1) ATE472969T1 (en)
DE (2) DE102005012114A1 (en)
ES (1) ES2346458T3 (en)
PL (1) PL1833351T3 (en)
WO (1) WO2006069837A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013813A1 (en) 2007-03-22 2008-09-25 Meiko Maschinenbau Gmbh & Co. Kg Energy-optimized cleaning machine
DE102007025262A1 (en) * 2007-05-30 2007-10-25 Meiko Maschinenbau Gmbh & Co. Kg Cleaning device e.g. cycle dishwasher, for e.g. plate, has microwave drying device for partial drying of cleaning goods, where cooling blower of drying device guides air into source of microwave and air is warmed up and applied to goods
DE102007053381B3 (en) * 2007-11-09 2009-04-02 Meiko Maschinenbau Gmbh & Co.Kg Dishwasher with latent heat storage
KR20100113730A (en) * 2009-04-14 2010-10-22 엘지전자 주식회사 Dish washer
US20120298142A1 (en) * 2011-05-26 2012-11-29 Brent Alden Junge Appliance configured to circulate air during a wash cycle
DE102012209112A1 (en) * 2012-05-30 2013-12-05 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher for washing dishes in kitchen, has heat exchanger arranged in region of wall of rinsing container, and heat guide element thermally conductively connected or coupled with heat exchanger and another wall of container
DE102018217549A1 (en) 2018-10-12 2020-04-16 BSH Hausgeräte GmbH Home appliance

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DE3021746C2 (en) * 1980-06-10 1982-12-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart A method for washing dishes in a household dishwasher and a machine of this type for carrying out the method
DE3626887A1 (en) * 1986-08-08 1988-02-11 Miele & Cie Laundry machine and dishwasher, oven or the like, with a dehumidifier
DE3741652A1 (en) * 1987-12-09 1989-06-22 Bauknecht Hausgeraete Device for drying dishes
JPH0698849A (en) * 1992-09-22 1994-04-12 Hitachi Ltd Dish washer
IT1289371B1 (en) * 1996-04-10 1998-10-02 Electrolux Zanussi Elettrodome DISHWASHER WITH TANK FOR WATER RECOVERY AND PERFECTED CONDENSATION DRYING SYSTEM
DE19835722A1 (en) * 1998-08-07 2000-02-10 Aeg Hausgeraete Gmbh Stainless steel washing tub for a program controllable dish washer has sides with a lining of flexible liquid material acting as a cooling mechanism
CH693494A5 (en) * 1998-12-23 2003-09-15 V Zug Ag Dishwasher, for water vapor contained in wash chamber, has cooling flow of external air directed against an external wall section around the wash chamber
ATE255844T1 (en) * 1999-05-26 2003-12-15 Miele & Cie PROGRAM-CONTROLLED DISHWASHER WITH A DEVICE FOR DRYING DISHES

Also Published As

Publication number Publication date
WO2006069837A1 (en) 2006-07-06
DE102005012114A1 (en) 2006-07-13
EP1833351A1 (en) 2007-09-19
DE502005009880D1 (en) 2010-08-19
ATE472969T1 (en) 2010-07-15
PL1833351T3 (en) 2010-12-31
ES2346458T3 (en) 2010-10-15

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