EP0539917A1 - Drum washing machine or dishwashing machine with a tub - Google Patents

Drum washing machine or dishwashing machine with a tub Download PDF

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Publication number
EP0539917A1
EP0539917A1 EP92118336A EP92118336A EP0539917A1 EP 0539917 A1 EP0539917 A1 EP 0539917A1 EP 92118336 A EP92118336 A EP 92118336A EP 92118336 A EP92118336 A EP 92118336A EP 0539917 A1 EP0539917 A1 EP 0539917A1
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EP
European Patent Office
Prior art keywords
tub
heating plate
washing machine
drum washing
plate surface
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Granted
Application number
EP92118336A
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German (de)
French (fr)
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EP0539917B1 (en
Inventor
Johannes Dipl.-Ing. Spielmann
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • 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
    • A47L15/4285—Water-heater arrangements

Definitions

  • the invention relates to a drum washing machine or dishwasher with a tub, the bottom of which is open and has a flange for watertight attachment of a plate-shaped electric heating device, the heating plate surface of which is at least approximately flush with the inner surface of the tub and to an outlet connection for the tub immediately connects.
  • a drum washing machine of the aforementioned type is known from German utility model 1 898 429.
  • a round heating plate with a flat heating plate surface is fastened in a likewise round cutout with a curved flange in the base of the tub.
  • the formation of the tub opening is also required in one plane, for which purpose the cylindrical jacket of the tub in the floor area must have different radii distributed over its depth. This results in a strong bulge of the tub in the areas distant from the central perpendicular of the heating plate. This leads to a tub filling with excess free fleet, which runs counter to the thrift efforts.
  • the invention has for its object to design a drum washing machine or dishwasher mentioned at the outset in such a way that as little free liquor as possible which is to be heated is required for sufficient filling of the tub.
  • the heating plate surface has a shape which follows the general shape of the tub in the base area.
  • the inner wall of the tub formed by the tub shell and the hotplate surface can also be guided in the bottom area near the drum jacket without resulting in areas that would have to be filled by superfluous free liquor.
  • the inventive design of the base of the tub with the surface of the heating plate can be used to concentrate the washing liquor in the area of the heating plate.
  • the heating plate surface can advantageously have a multi-folded, flat trough shape which is inclined towards the outlet connection.
  • the number and angle of the folds is adapted to the cylindrical shape of the tub shell.
  • a form of designing a drum washing machine according to the invention which increases the sealing security is advantageously provided if the heating plate surface is coated with the same Radius as the tub shell is cylindrically curved.
  • the outlet connection is expediently connected approximately in the middle of the heating plate surface, so that the heating plate which can be attached to the tub shell from below can support the drainage of the liquor to be pumped out.
  • a heating plate surface designed according to the invention is advantageously a component of a heating plate made of stainless steel, which carries on the side facing away from the inner tub interior at least one tubular heating element connected to the heating plate.
  • a heating plate is easy to manufacture, has low heat transfer values and is ultimately easy to assemble.
  • a sensor for a temperature controller is advantageously arranged in direct contact with the heating plate on the same side as the tubular heating element, so that the heating plate in direct contact with the medium to be heated (the lye) assumes approximately the same temperature as the medium and transmits it to the sensor.
  • the sensor is advantageously a capillary tube.
  • the capillary tube can advantageously be attached between these sections.
  • the tub 1 in FIG. 1 contains a laundry drum 2, which is centered and rotatably mounted in it and which contains a driver 3 at the bottom for circulating the laundry.
  • the level 4 of the tub is indicated, which is present in an amount corresponding to the maximum free liquor.
  • the free fleet located inside the washing drum 2 touches the laundry and is continuously taken up and released by it.
  • the free liquor located between the jackets of the tub 1 and the washing drum 2 will not participate directly in the washing process and should therefore be kept as small as possible. This requires an all around small distance between the tub shell and the drum jacket.
  • the tub 1 has an opening at the bottom (5 in FIG. 2) with a flange for attaching a heating plate 6.
  • the heating plate according to FIG. 1 is folded several times - here directly next to the outlet nozzle 7. This gives the heating plate surface one of the general shape (cylinder jacket shape) of the tub 1 approximately the following shape, so that the heating plate surface as the tub jacket is approximately the same distance from the drum jacket. As a result, only a small amount of free liquor has to be accepted in comparison with the prior art.
  • the heating plate 6 can be more or less large and angular or round shaped depending on the heat output to be transferred.
  • the tubular heating elements 8 and, if appropriate, the sensor 9 of a temperature controller, not shown, are to be shaped accordingly.
  • Fig. 2 shows a more detailed illustration with another embodiment of the heating plate, which, like that of Fig. 1, can be angular or round.
  • its hotplate surface 10 is cylindrically curved with a radius 13 of approximately the same size as the tub 11.
  • a radius 13 of approximately the same size as the tub 11.
  • the outlet connection 14 can be connected to a rubber line 15 which, as is customary nowadays, is provided with a ball valve 16 for closing the outlet line against loss of detergent.
  • the heating plate 6 is provided on the one hand with an outer flange 17 which is connected to the flange 19 of the bottom opening 5 of the tub 1 via a rubber ring seal 18.
  • a pressure ring 20 is provided on the inside of the rubber ring 18 and a clamping ring 21 on the outside.
  • the rubber outlet line 15 is also fastened to the outlet connection 14 via a clamping ring 22. Due to the given construction of the heating plate 6 with the rubber and the clamping rings, the heating plate 6 is easy to assemble.
  • the heating plate surface 10 is part of a plate made of stainless steel and therefore enables extremely high heat transfer.
  • an annular thermal insulation (not shown) made of mineral fiber wool, for example, can be attached under the radiator area. As a result, the heat flow can be kept largely in the direction of the alkali.
  • FIG. 3 A view of the heating plate 6 according to FIG. 2 from below and before installation in the tub 1 is shown in FIG. 3.
  • the tubular heater 8 is placed in a spiral shape. It is metallically connected to the heating plate 6, e.g. by means of brazing or another metallic compound forming alloys. Between the parallel sections of the spirally arranged heating element 8 there is a capillary tube 9 so that it has no contact with the tubular heating element but an intimate contact with the heating plate 6. Like the radiator, this intimate contact can be secured by a metallic bond.
  • the free end 23 of the capillary tube is connected to a temperature controller, not shown.
  • one or two radiators 8 can be attached to the heating plate 6, the size and shape of which should be adapted accordingly. For example, it is possible to deviate from the circular shape shown in FIG. 3 and instead choose an oval or square shape for the heating plate 6. However, the bottom opening 5 of the tub 1 must be shaped accordingly. In particular for external contours of the heating plate 6 and the bottom opening of the tub that deviate from a circular shape other forms of attachment of the heating plate in the jacket 11 of the tub 1 are conceivable. The type of attachment of the heating plate is not essential to the invention.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cookers (AREA)

Abstract

The bottom of the tub 1 is open and has a flange 19 for the watertight attachment of a plate-shaped electrical heating device 6. The heating-plate surface 10 is at least approximately flush with the inner face of the tub 1 and merges directly into an outlet connection 14 for the lye. To make the tub bottom as smooth as possible, the heating-plate surface 10 has a shape matching the general shape of the tub 1 in the bottom region 5. <IMAGE>

Description

Die Erfindung geht aus von einer Trommelwasch- oder Geschirrspülmaschine mit einem Laugenbehälter, dessen Boden offen ist und einen Flansch zum wasserdichten Anbringen einer plattenförmigen Elektro-Heizeinrichtung aufweist, deren Heizplatten-Oberfläche mit der Innenfläche des Laugenbehälters wenigstens annähernd abschließt und an einen Auslaßstutzen für die Lauge unmittelbar anschließt.The invention relates to a drum washing machine or dishwasher with a tub, the bottom of which is open and has a flange for watertight attachment of a plate-shaped electric heating device, the heating plate surface of which is at least approximately flush with the inner surface of the tub and to an outlet connection for the tub immediately connects.

Eine Trommelwaschmaschine der vorgenannten Art ist aus dem deutschen Gebrauchsmuster 1 898 429 bekannt. Dort ist eine runde Heizplatte mit ebener Heizplatten-Oberfläche in einen ebenfalls rund geformten Ausschnitt mit ausgewölbtem Flansch im Laugenbehälter-Boden befestigt. Für die Anbringung einer ebenen Heizplatte ist die Ausformung der Laugenbehälter-Bodenöffnung ebenfalls in einer Ebene erforderlich, wozu der zylinderförmige Mantel des Laugenbehälters im Bodenbereich über seie Tiefe verteilt unterschiedliche Radien aufweisen muß. Dadurch ergibt sich in den von der Mittelsenkrechten der Heizplatte entfernten Raumbereichen eine starke Ausbeulung des Laugenbehälters. Dies führt zu einer Laugenbehälter-Füllung mit übermäßig viel freier Flotte, was den Sparsamkeitsbestrebungen zuwider läuft.A drum washing machine of the aforementioned type is known from German utility model 1 898 429. There, a round heating plate with a flat heating plate surface is fastened in a likewise round cutout with a curved flange in the base of the tub. For the attachment of a flat heating plate, the formation of the tub opening is also required in one plane, for which purpose the cylindrical jacket of the tub in the floor area must have different radii distributed over its depth. This results in a strong bulge of the tub in the areas distant from the central perpendicular of the heating plate. This leads to a tub filling with excess free fleet, which runs counter to the thrift efforts.

Der Erfindung liegt die Aufgabe zugrunde, eine eingangs genannte Trommelwasch- oder Geschirrspülmaschine so auszubilden, daß möglichst wenig aufzuheizende freie Flotte zur ausreichenden Füllung des Laugenbehälters erforderlich ist.The invention has for its object to design a drum washing machine or dishwasher mentioned at the outset in such a way that as little free liquor as possible which is to be heated is required for sufficient filling of the tub.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Heizplatten-Oberfläche eine der generellen Form des Laugenbehälters im Bodenbereich folgende Form aufweist. Damit kann bei Trommelwaschmaschinen die durch den Laugenbehälter-Mantel und die Heizplatten-Oberfläche gebildete Innenwand des Laugenbehälters auch im Bodenbereich nahe dem Trommelmantel geführt sein, ohne daß sich Raumbereiche ergeben, die durch überflüssige freie Flotte gefüllt werden müßten. Bei Geschirrspülmaschinen kann die erfindungsgemäße Ausbildung des Laugenbehälter-Bodens mit der Heizplatten-Oberfläche der konzentrierten Zusammenführung der Spüllauge im Bereich der Heizplatte dienen.According to the invention, this object is achieved in that the heating plate surface has a shape which follows the general shape of the tub in the base area. In drum washing machines, the inner wall of the tub formed by the tub shell and the hotplate surface can also be guided in the bottom area near the drum jacket without resulting in areas that would have to be filled by superfluous free liquor. In dishwashers, the inventive design of the base of the tub with the surface of the heating plate can be used to concentrate the washing liquor in the area of the heating plate.

Bei einer erfindungsgemäß ausgebildeten Trommelwaschmaschine mit einem im Bodenbereich wenigstens annähernd zylinderförmigen Laugenbehälter-Mantel kann die Heizplatten-Oberfläche vorteilhafterweise eine zum Auslaßstutzen hin geneigte, mehrfach gefaltete, flache Wannenform aufweisen. Die Zahl und Winkel der Faltungen ist dabei an die Zylinderform des Laugenbehälter-Mantels angepaßt. Dadurch läßt sich die Heizplatte mit genügend Dichtsicherheit an einem Flansch im Boden des Laugenbehälter-Mantels anbringen und außerdem unterstützt die Neigung der Heizplatten-Oberfläche den Abfluß der durch den Auslaßstutzen abgepumpten Lauge.In the case of a drum washing machine designed in accordance with the invention with an outer tub shell which is at least approximately cylindrical in the base region, the heating plate surface can advantageously have a multi-folded, flat trough shape which is inclined towards the outlet connection. The number and angle of the folds is adapted to the cylindrical shape of the tub shell. As a result, the heating plate can be attached to a flange in the base of the tub container with sufficient sealing security and, moreover, the inclination of the heating plate surface supports the outflow of the liquor pumped out through the outlet connection.

Eine die Dichtsicherheit erhöhende Form der Ausbildung einer Trommelwaschmaschine gemäß der Erfindung ist vorteilhafterweise gegeben, wenn die Heizplatten-Oberfläche mit demselben Radius wie der Laugenbehälter-Mantel zylindrisch gebogen ist. Zweckmäßigerweise ist in allen Ausführungsformen der Auslaßstutzen etwa in der Mitte der Heizplatten-Oberfläche angeschlossen, so daß die von unten an den Laugenbehälter-Mantel ansetzbare Heizplatte das Abfließen der abzupumpenden Lauge unterstützen kann.A form of designing a drum washing machine according to the invention which increases the sealing security is advantageously provided if the heating plate surface is coated with the same Radius as the tub shell is cylindrically curved. In all embodiments, the outlet connection is expediently connected approximately in the middle of the heating plate surface, so that the heating plate which can be attached to the tub shell from below can support the drainage of the liquor to be pumped out.

Eine erfindungsgemäß gestaltete Heizplatten-Oberfläche ist vorteilhafterweise Bestandteil einer aus nichtrostendem Stahl hergestellten Heizplatte, die auf der dem Laugenbehälter-Innenraum abgewandten Seite mindestens einen metallisch mit der Heizplatte verbundenen Rohrheizkörper trägt. Eine derartig ausgestaltete Heizplatte ist leicht herstellbar, hat geringe Wärmeübergangswerte und läßt sich schließlich leicht montieren.A heating plate surface designed according to the invention is advantageously a component of a heating plate made of stainless steel, which carries on the side facing away from the inner tub interior at least one tubular heating element connected to the heating plate. Such a heating plate is easy to manufacture, has low heat transfer values and is ultimately easy to assemble.

Vorteilhafterweise ist auf derselben Seite wie der Rohrheizkörper ein Fühler für einen Temperaturregler in unmittelbarem Kontakt mit der Heizplatte angeordnet, so daß die mit dem aufzuheizenden Medium (der Lauge) unmittelbar im Kontakt stehende Heizplatte annähernd dieselbe Temperatur wie das Medium annimmt und an den Fühler überträgt.A sensor for a temperature controller is advantageously arranged in direct contact with the heating plate on the same side as the tubular heating element, so that the heating plate in direct contact with the medium to be heated (the lye) assumes approximately the same temperature as the medium and transmits it to the sensor.

Der Fühler ist vorteilhafterweise ein Kapillarrohr.The sensor is advantageously a capillary tube.

Wenn der Rohrheizkörper in einer Spiralform angebracht ist und parallel und mit Abstand zueinander liegende Abschnitte aufweist, kann das Kapillarrohr vorteilhafterweise zwischen diesen Abschnitten angebracht sein.If the tubular heater is attached in a spiral shape and has sections lying parallel and at a distance from one another, the capillary tube can advantageously be attached between these sections.

Anhand einiger in der Zeichnung dargestellter Ausführungsbeispiele ist die Erfindung nachstehend erläutert.The invention is explained below on the basis of some exemplary embodiments shown in the drawing.

Es zeigen

Fig. 1
eine schematische Seitenansicht auf den Bodenbereich eines aufgeschnittenen Laugenbehälters einer Waschmaschine,
Fig. 2
eine entsprechende Ansicht wie Fig. 1 in Vergrößerung für ein anderes Ausführungsbeispiel der Erfindung (zugleich Schnitt entlang der Schnittlinie II-II in Fig. 3) und
Fig. 3
eine Ansicht der Heizplatte gemäß Fig. 2 von unten.
Show it
Fig. 1
2 shows a schematic side view of the floor area of a cut open suds container of a washing machine,
Fig. 2
a corresponding view as Fig. 1 in an enlargement for another embodiment of the invention (at the same time section along the section line II-II in Fig. 3) and
Fig. 3
a view of the heating plate of FIG. 2 from below.

Der Laugenbehälter 1 in Fig. 1 enthält eine in ihm zentrisch und drehbar gelagerte Wäschetrommel 2, die unten einen Mitnehmer 3 zum Umwälzen der Wäsche enthält. In Bodennähe des Laugenbehälters 1 ist das Niveau 4 der Lauge angedeutet, die in einer der maximalen freien Flotte entsprechenden Menge vorliegt. Die innerhalb der Wäschetrommel 2 befindliche freie Flotte berührt die Wäsche und wird von ihr ständig aufgenommen und wieder abgegeben. Demgegenüber wird die zwischen den Mänteln des Laugenbehälters 1 und der Wäschetrommel 2 befindliche freie Flotte an dem Waschprozess nicht direkt teilnehmen und soll daher so klein wie möglich gehalten werden. Dies erfordert einen rundherum geringen Abstand zwischen dem Laugenbehälter-Mantel und dem Trommelmantel.The tub 1 in FIG. 1 contains a laundry drum 2, which is centered and rotatably mounted in it and which contains a driver 3 at the bottom for circulating the laundry. In the vicinity of the bottom of the tub 1, the level 4 of the tub is indicated, which is present in an amount corresponding to the maximum free liquor. The free fleet located inside the washing drum 2 touches the laundry and is continuously taken up and released by it. In contrast, the free liquor located between the jackets of the tub 1 and the washing drum 2 will not participate directly in the washing process and should therefore be kept as small as possible. This requires an all around small distance between the tub shell and the drum jacket.

Der Laugenbehälter 1 hat am Boden eine Öffnung (5 in Fig. 2) mit einem Flansch zum Befestigen einer Heizplatte 6. Die Heizplatte gemäß Fig. 1 ist mehrfach - hier unmittelbar neben dem Auslaßstutzen 7 - gefaltet. Dadurch ergibt sich für die Heizplatten-Oberfläche eine der generellen Form (Zylindermantel-Form) des Laugenbehälters 1 etwa folgende Form, so daß die Heizplatten-Oberfläche wie der Laugenbehälter-Mantel einen etwa gleich geringen Abstand zum Trommelmantel hat. Dadurch muß im Vergleich zum Stand der Technik nur eine geringe Menge freie Flotte in Kauf genommen werden.The tub 1 has an opening at the bottom (5 in FIG. 2) with a flange for attaching a heating plate 6. The heating plate according to FIG. 1 is folded several times - here directly next to the outlet nozzle 7. This gives the heating plate surface one of the general shape (cylinder jacket shape) of the tub 1 approximately the following shape, so that the heating plate surface as the tub jacket is approximately the same distance from the drum jacket. As a result, only a small amount of free liquor has to be accepted in comparison with the prior art.

Die Heizplatte 6 kann je nach den zu übertragenden Wärmeleistungen mehr oder weniger groß und eckig oder rund geformt sein. Entsprechend sind die auf der Außenseite angebrachten Rohrheizkörper 8 und gegebenenfalls der Fühler 9 eines nicht dargestellten Temperaturreglers zu formen.The heating plate 6 can be more or less large and angular or round shaped depending on the heat output to be transferred. The tubular heating elements 8 and, if appropriate, the sensor 9 of a temperature controller, not shown, are to be shaped accordingly.

Fig. 2 zeigt eine detalliertere Darstellung mit einem anderen Ausführungsbeispiel der Heizplatte, die ebenso wie die der Fig. 1 eckig oder rund geformt sein kann. Jedenfalls ist ihre Heizplatten-Oberlfäche 10 mit einem etwa gleich großen Radius 13 wie der Laugenbehälter-Mantel 11 zylindrisch gebogen. Dadurch kann an allen Orten ein gleich geringer Abstand zum Trommelmantel 12 eingehalten werden.Fig. 2 shows a more detailed illustration with another embodiment of the heating plate, which, like that of Fig. 1, can be angular or round. In any case, its hotplate surface 10 is cylindrically curved with a radius 13 of approximately the same size as the tub 11. As a result, an equally small distance from the drum jacket 12 can be maintained at all locations.

Der Auslaßstutzen 14 kann mit einer Gummileitung 15 verbunden sein, die - wie heutzutage gebräuchlich - mit einem Kugelventil 16 zum Verschließen der Auslaßleitung gegen Verlust von Waschmittel versehen ist. Die Heizplatte 6 ist einerseits mit einem Außenflansch 17 versehen, der über eine Gummi-Ringdichtung 18 mit dem Flansch 19 der Bodenöffnung 5 des Laugenbehälters 1 verbunden ist. Dazu sind auf der Innenseite des Gummiringes 18 ein Druckring 20 und auf der Außenseite ein Spannring 21 vorgesehen. Ebenfalls über einen Spannring 22 ist die Gummi-Auslaßleitung 15 am Auslaßstutzen 14 befestigt. Durch die gegebene Konstruktion der Heizplatte 6 mit den Gummi- und den Spannringen ist die Heizplatte 6 leicht montierbar.The outlet connection 14 can be connected to a rubber line 15 which, as is customary nowadays, is provided with a ball valve 16 for closing the outlet line against loss of detergent. The heating plate 6 is provided on the one hand with an outer flange 17 which is connected to the flange 19 of the bottom opening 5 of the tub 1 via a rubber ring seal 18. For this purpose, a pressure ring 20 is provided on the inside of the rubber ring 18 and a clamping ring 21 on the outside. The rubber outlet line 15 is also fastened to the outlet connection 14 via a clamping ring 22. Due to the given construction of the heating plate 6 with the rubber and the clamping rings, the heating plate 6 is easy to assemble.

Die Heizplatten-Oberfläche 10 ist Bestandteil einer aus nichtrostendem Stahl hergestellten Platte und ermöglicht daher einen extrem hohen Wärmeübergang. Außen läßt sich unter dem Heizkörperbereich eine ringförmige Wärmedämmung (nicht dargestellt) beispielsweise aus Mineralfaserwolle anbringen. Dadurch kann der Wärmefluß weitestgehend in Richtung Lauge gehalten werden.The heating plate surface 10 is part of a plate made of stainless steel and therefore enables extremely high heat transfer. On the outside, an annular thermal insulation (not shown) made of mineral fiber wool, for example, can be attached under the radiator area. As a result, the heat flow can be kept largely in the direction of the alkali.

Eine Ansicht der Heizplatte 6 gemäß Fig. 2 von unten und vor dem Einbau in den Laugenbehälter 1 ist in Fig. 3 dargestellt. Der Rohrheizkörper 8 ist in Spiralform gelegt. Er ist mit der Heizplatte 6 metallisch verbunden, z.B. mittels Hartlötung oder einem anderen Legierungen bildenden metallischen Verbund. Zwischen den parallelen Abschnitten des spiralig angeordneten Heizkörpers 8 liegt ein Kapillarrohr 9 so, daß es keinen Kontakt zum Rohrheizkörper aber innigen Kontakt zur Heizplatte 6 hat. Dieser innige Kontakt kann wie beim Heizkörper durch einen metallischen Verbund gesichert werden. Das freie Ende 23 des Kapillarrohres ist mit einem nicht dargestellten Temperaturregler verbunden.A view of the heating plate 6 according to FIG. 2 from below and before installation in the tub 1 is shown in FIG. 3. The tubular heater 8 is placed in a spiral shape. It is metallically connected to the heating plate 6, e.g. by means of brazing or another metallic compound forming alloys. Between the parallel sections of the spirally arranged heating element 8 there is a capillary tube 9 so that it has no contact with the tubular heating element but an intimate contact with the heating plate 6. Like the radiator, this intimate contact can be secured by a metallic bond. The free end 23 of the capillary tube is connected to a temperature controller, not shown.

Je nach der zu übertragenden Heizleistung können ein oder zwei Heizkörper 8 auf der Heizplatte 6 angebracht werden, deren Größe und Form entsprechend angepaßt sein sollte. Beispielsweise kann von der in Fig. 3 dargestellten Kreisform abgewichen und stattdessen eine ovale oder eckige Form für die Heizplatte 6 gewählt werden. Die Bodenöffnung 5 des Laugenbehälters 1 muß jedoch entsprechend geformt sein. Insbesondere für von einer Kreisform abweichende Außenkonturen der Heizplatte 6 und der Bodenöffnung des Laugenbehälters sind andere Befestigungsformen der Heizplatte im Mantel 11 des Laugenbehälters 1 denkbar. Die Art der Befestigung der Heizplatte ist nicht erfindungswesentlich.Depending on the heating power to be transferred, one or two radiators 8 can be attached to the heating plate 6, the size and shape of which should be adapted accordingly. For example, it is possible to deviate from the circular shape shown in FIG. 3 and instead choose an oval or square shape for the heating plate 6. However, the bottom opening 5 of the tub 1 must be shaped accordingly. In particular for external contours of the heating plate 6 and the bottom opening of the tub that deviate from a circular shape other forms of attachment of the heating plate in the jacket 11 of the tub 1 are conceivable. The type of attachment of the heating plate is not essential to the invention.

Claims (7)

Trommelwasch- oder Geschirrspülmaschine mit einem Laugenbehälter, dessen Boden offen ist und einen Flansch zum wasserdichten Anbringen einer plattenförmigen Elektro-Heizeinrichtung aufweist, deren Heizplatten-Oberfläche mit der Innenfläche des Laugenbehälters wenigstens annähernd abschließt und an einen Auslaßstutzen für die Lauge unmittelbar anschließt, dadurch gekennzeichnet, daß die Heizplatten-Oberfläche (10) eine der generellen Form des Laugenbehälters (1, 11) im Bodenbereich (Öffnung 5) folgende Form aufweist.Drum washing machine or dishwasher with a tub, the bottom of which is open and has a flange for watertight attachment of a plate-shaped electric heating device, the surface of the heating plate of which at least approximates the inner surface of the tub and directly adjoins an outlet connection for the tub, characterized in that that the heating plate surface (10) has a shape following the general shape of the tub (1, 11) in the bottom area (opening 5). Trommelwaschmaschine nach Anspruch 1 mit einem im Bodenbereich wenigstens annähernd zylinderförmigen Laugenbehälter-Mantel, dadurch gekennzeichnet, daß die Heizplatten-Oberfläche (10) eine zum Auslaßstutzen (7) hin geneigte, mehrfach gefaltete, flache Wannenform aufweist.Drum washing machine according to Claim 1 with a tub container jacket which is at least approximately cylindrical in the base region, characterized in that the heating plate surface (10) has a multiply folded, flat trough shape which is inclined towards the outlet connection (7). Trommelwaschmaschine gemäß dem Oberbegriff des Anspruches 2, dadurch gekennzeichnet, daß die Heizplatten-Oberfläche (10) mit denselben Radius (13) wie der Laugenbehälter-Mantel (11) zylindrisch gebogen ist.Drum washing machine according to the preamble of claim 2, characterized in that the heating plate surface (10) is cylindrically curved with the same radius (13) as the outer tub jacket (11). Trommelwasch- oder Geschirrspülmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Heizplatten-Oberfläche (10) Bestandteil einer aus nichtrostendem Stahl hergestellten Heizplatte (6) ist, die auf der dem Laugenbehälter-Innenraum abgewandten Seite mindestens einen metallisch mit der Heizplatte (6) verbundenen Rohrheizkörper (8) trägt.Drum washing machine or dishwasher according to one of claims 1 to 3, characterized in that the heating plate surface (10) is part of a heating plate (6) made of stainless steel, which has at least one metal with the heating plate on the side facing away from the tub interior (6) connected tubular heater (8) carries. Trommelwasch- oder Geschirrspülmaschine nach Anspruch 4, dadurch gekennzeichnet, daß auf derselben Seite wie der Rohrheizkörper (8) ein Fühler (9) für einen Temperaturregler in unmittelbarem Kontakt mit der Heizplatte (6) steht.Drum washing machine or dishwasher according to claim 4, characterized in that on the same side as the tubular heater (8) a sensor (9) for a temperature controller is in direct contact with the heating plate (6). Trommelwasch- oder Geschirrspülmaschine nach Anspruch 5, dadurch gekennzeichnet, daß der Fühler (9) ein Kapillarrohr ist.Drum washing machine or dishwasher according to claim 5, characterized in that the sensor (9) is a capillary tube. Trommelwasch- oder Geschirrspülmaschine nach Anspruch 6, dadurch gekennzeichnet, daß der Rohrheizkörper (8) in einer Spiralform angebracht ist und parallel und mit Abstand zueinander liegende Abschnitte aufweist und daß das Kapillarrohr (9) zwischen diesen Abschnitten angebracht ist.Drum washing machine or dishwasher according to claim 6, characterized in that the tubular heating element (8) is attached in a spiral shape and has sections which are parallel and at a distance from one another and that the capillary tube (9) is attached between these sections.
EP92118336A 1991-10-28 1992-10-27 Drum washing machine or dishwashing machine with a tub Expired - Lifetime EP0539917B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4135540A DE4135540A1 (en) 1991-10-28 1991-10-28 DRUM WASHING OR DISHWASHER WITH A LYE RESERVOIR
DE4135540 1991-10-28

Publications (2)

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EP0539917A1 true EP0539917A1 (en) 1993-05-05
EP0539917B1 EP0539917B1 (en) 1996-12-18

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EP92118336A Expired - Lifetime EP0539917B1 (en) 1991-10-28 1992-10-27 Drum washing machine or dishwashing machine with a tub

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EP (1) EP0539917B1 (en)
DE (2) DE4135540A1 (en)
ES (1) ES2098414T3 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP0906984A1 (en) * 1997-10-01 1999-04-07 I.R.C.A. S.p.a. Industria Resistenze Corazzate e Affini Heating element for household electrical appliances
EP1177758A2 (en) * 2000-07-31 2002-02-06 CANDY S.p.A. Unit for heating water in a dishwasher machine
DE102004003952B4 (en) * 2003-01-24 2006-10-05 Eichenauer Heizelemente Gmbh & Co. Kg Heating device for heating household electrical appliances

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DE4401420C2 (en) * 1994-01-19 1997-07-31 Aeg Hausgeraete Gmbh Work container for a dishwasher or washing machine
DE19903951B4 (en) * 1999-02-02 2013-11-14 Fritz Eichenauer Gmbh & Co. Kg Heatable pump housing for liquid heating
DE102006012081B4 (en) * 2006-03-14 2009-09-03 Miele & Cie. Kg Lye container with plate-shaped heater
DE102006012035B3 (en) 2006-03-14 2007-03-01 Miele & Cie. Kg Wash container for a horizontal axis front-loading washing machine has plate heater for the wash fluid sealed beneath the container with support and clamps
DE102006013641B3 (en) 2006-03-22 2007-07-12 Miele & Cie. Kg A method for assembling a flat heating element to an opening in the bottom of a domestic washing machine tub has a circular element fitted into a spigot in the tub wall held by a liquid sealed plate
DE102006014785B3 (en) 2006-03-29 2007-03-08 Miele & Cie. Kg Caustic solution container for laundry treatment machine, has base segment that rests against outer edge of opening within heating device with outer surface of partial circumference of container
DE102007004047A1 (en) * 2007-01-22 2008-07-31 Miele & Cie. Kg Water-carrying, electrical household appliance
DE102007004048B3 (en) * 2007-01-22 2008-02-07 Miele & Cie. Kg Front-loading household washing machine has flap plate heating element with side-arm extending into drum chamber
ITRM20080077A1 (en) * 2008-02-12 2009-08-13 I R C A S P A Ind Resistenz E Corrazzate ... ELECTRIC HEATING ELEMENT

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DE435088C (en) * 1926-10-07 Mueller Georg Drum washing machine
DE1898429U (en) * 1964-05-05 1964-08-13 Constructa Werke G M B H ELECTRIC HEATING, IN PARTICULAR FOR A DRUM WASHING MACHINE.
DE8228655U1 (en) * 1982-10-12 1987-04-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Electric heater for dishwashers
DE9100476U1 (en) * 1991-01-16 1991-04-04 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Cleaning machine heating

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0906984A1 (en) * 1997-10-01 1999-04-07 I.R.C.A. S.p.a. Industria Resistenze Corazzate e Affini Heating element for household electrical appliances
EP1177758A2 (en) * 2000-07-31 2002-02-06 CANDY S.p.A. Unit for heating water in a dishwasher machine
EP1177758A3 (en) * 2000-07-31 2002-10-30 CANDY S.p.A. Unit for heating water in a dishwasher machine
DE102004003952B4 (en) * 2003-01-24 2006-10-05 Eichenauer Heizelemente Gmbh & Co. Kg Heating device for heating household electrical appliances

Also Published As

Publication number Publication date
DE4135540A1 (en) 1993-04-29
DE59207716D1 (en) 1997-01-30
ES2098414T3 (en) 1997-05-01
EP0539917B1 (en) 1996-12-18

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