EP1341955B1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
EP1341955B1
EP1341955B1 EP01986848A EP01986848A EP1341955B1 EP 1341955 B1 EP1341955 B1 EP 1341955B1 EP 01986848 A EP01986848 A EP 01986848A EP 01986848 A EP01986848 A EP 01986848A EP 1341955 B1 EP1341955 B1 EP 1341955B1
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EP
European Patent Office
Prior art keywords
duct
liquid
pressure
drain
washing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01986848A
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German (de)
French (fr)
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EP1341955A2 (en
Inventor
Edwin Bolduan
Horst Wiemer
Hans GÜNTER-FELSKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1341955A2 publication Critical patent/EP1341955A2/en
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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply

Definitions

  • the invention relates to a washing machine according to the preamble of claim 1.
  • the invention relates to a washing machine comprising a tub in which a laundry drum is rotatable about a horizontal axis and which at a lowest point has a drain opening; a drain line which is connected to the drain opening and which is connected to a drain pump or connectable; a turbidity sensor on a fluid line connecting the drain line to an additional port formed in the tub at a higher position than the drain port, the turbidity sensor responsive to turbidity of the fluid flowing through the fluid passage; a pressure sensor responsive to a fluid pressure in the tub dependent fluid pressure for controlling the fluid fill level in the tub.
  • the turbidity sensor is a so-called rinsing sensor, in response to the signals of which laundry rinsing operations are controlled.
  • the pressure sensor is connected via a pressure line to a further additional opening of the tub.
  • a washing machine outlet pipe is known to which a pressure sensor tube via a pressure sensor is connected.
  • a purge sensor is not disclosed in this document.
  • the pressure sensor is a membrane switch which controls the water level in the tub, in particular limited to a predetermined extent.
  • the sensor is preferably an optical sensor which includes a light transmitter, for example an infrared LED transmitter, and a light receiver, for example a phototransistor. Depending on the degree of turbidity of the liquid in the liquid line penetrates more or less Light the transmitter's liquid to the receiver.
  • a light transmitter for example an infrared LED transmitter
  • a light receiver for example a phototransistor
  • the invention enables the problem to be solved to provide a structurally and moderately simpler production and cheaper system.
  • the invention avoids that a connection to the tub is required for the pressure sensor. Such a connection to the tub is not only expensive to produce but also prevents the same type of tub from being used for a variety of different washing machines. The invention no longer requires a pressure sensor connection to the tub, so that tubs can be produced in large numbers for different types of washing machines.
  • both the connection for the purge sensor and the connection for the pressure sensor are formed on the drain hose.
  • both ports are arranged tangentially on the drain hose, preferably on the same side of the drain hose.
  • the invention makes it possible to form the drain hose with the connections for the turbidity sensor and the pressure sensor as a preassembled module that can be used on a modular basis for different types of washing machines.
  • the washing machine shown in Fig. 1 has a housing 1, in which a tub 2 is mounted to vibrate.
  • a laundry drum 3 is arranged rotatably about a horizontal axis.
  • the tub 2 can be fed into the upper part of a supply line 4 via a solenoid valve 5 and a Waschstoffeintechnik peculiar matterer 6 water and optionally laundry treatment agent (detergent, detergent, bleach).
  • the tub 2 is provided at its lowest point with a drain opening 8, to which a drain line 10 is connected liquid-tight, which at its end remote from the tub 2 end a particularly easily flexible, preferably bellows or corrugated tubing downstream end portion 12 has, with the suction side of a Lase pump 14 is connected.
  • An exhaust pump 16 is connected to the pressure side of the layer pump 14.
  • the downstream drain hose section 12 is formed on a substantially horizontal leg of the drain hose 10.
  • the connected to the drain opening 8 of the tub 2 downstream upstream portion 14 is preferably a vertical leg of the drain hose 10.
  • This may include a check valve 16, which prevents backflow from the drain pump 14 into the drain opening 8 of the tub 2.
  • the drain hose 10 may have a hose nozzle 18 for an emergency drain hose, in the event that the drain pump 14 has a defect.
  • a liquid line 18 connects a higher than the drain opening 8 located additional opening 20 of the tub 2 with the vertical leg 14 of the drain hose 10 at one between its check valve 16 and its drain opening 8 facing the upper end.
  • This flow is based on a slight pressure difference of the liquor over the drain opening 8 and the additional opening 20.
  • the liquid line 18 is provided with a turbidity sensor 22 which, depending on the turbidity of the liquid flowing through the liquid line 18, in particular liquor, generates signals which are delivered via a line 24 to a control device 26, which control the detergent operation in dependence thereon can.
  • the turbidity sensor 22 is a so-called “purge sensor”, depending on which signals laundry rinsing operations in the washing machine are controlled.
  • This sensor 22 includes a transmitter and a receiver, for example an optical transmitter, for example an infrared LED, and an optical receiver, for example a phototransistor, as known from DE 196 52 830 A1.
  • the pressure sensor 30 reacts in dependence on the As a result, the liquid level in the tub 2 can be controlled by the pressure line 28 and its pressure sensor 30 or pressure switch, in particular limited to a maximum value, as for example from DE-Auslegeschrift 28th 40 241 is known.
  • connection sockets 18-1 and 28-1 of the liquid line 18 and pressure line 28 are preferably formed immediately adjacent to the drain opening 8 between the upper end of the drain hose 10 and the check valve 16 in the vertical leg 14.
  • the connection sockets are an integral part of the drain hose 10.
  • the two connection sockets 18-1 and 28-1 are preferably arranged tangentially to the drain hose 10. They can be arranged one above the other according to FIG. 1, the arrangement being chosen one above the other mainly for the purpose of making them visible in FIG.
  • FIG. 2 shows a preferred embodiment in which the two connection sockets 18-1 and 28-1 are formed substantially parallel next to one another in the vertical leg 14 of the drain hose 10. This is a space saving embodiment which also avoids the formation of harmful eddy currents in the drain hose.
  • FIG. 3 shows an embodiment in which the connection stubs 18-1 and 28-1 are likewise arranged tangentially to the drain hose 10 or its vertical leg 14, but on opposite sides of the drain hose 10. This could be with respect to the wiring in the Washing machine and also with respect to currents in the drain hose 10 less favorable than Fig. 2 be.
  • the drain hose 10 is preferably made in a known manner of flexible material, such as rubber, and is plugged or infected in a known manner to the drain opening 8 of the tub 2 or releasably connected in any other way.

Abstract

A washing machine has a laundry drum and a tub and defines an outflow orifice at a lowest point and a second orifice at a point higher. An outflow line fluidically connects to the outflow orifice. A liquid line fluidically connects the outflow line to the second orifice. A turbidity sensor is disposed at the liquid line and responds to a turbidity of liquid flowing therethrough. A pressure controller includes a pressure line connection at the outflow line, a pressure sensor connected to the pressure line connection, a pressure of liquid in the outflow line dependent on a level of liquid in the tub being transmitted from the outflow line to the pressure sensor through the pressure line connection, and the pressure sensor responding to the liquid pressure and controlling a liquid filling level in the tub dependent upon the liquid pressure. In the configuration, the outflow hose has both a connection for a turbidity sensor and a connection for a pressure sensor.

Description

Die Erfindung betrifft eine Waschmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a washing machine according to the preamble of claim 1.

Demgemäß betrifft die Erfindung eine Waschmaschine enthaltend einen Laugenbehälter, in welchem eine Wäschetrommel um eine horizontal Achse rotierbar ist und welcher an einer tiefsten Stelle eine Ablauföffnung hat; eine Ablaufleitung, welche an die Ablauföffnung angeschlossen ist und welche mit einer Laugenpumpe verbunden oder verbindbar ist; einen Trübungssensor an einer Flüssigkeitsleitung, welche die Ablaufleitung mit einer im Laugenbehälter an höherer Stelle als die Ablauföffnung gebildeten Zusatzöffnung verbindet, wobei der Trübungssensor auf eine Trübung der Flüssigkeit anspricht, welche durch die Flüssigkeitsleitung strömt; einen Drucksensor, welcher auf einen vom Flüssigkeitsniveau im Laugenbehälter abhängigen Flüssigkeitsdruck anspricht zur Steuerung des Flüssigkeits-Füllungsniveaus im Laugenbehälter.Accordingly, the invention relates to a washing machine comprising a tub in which a laundry drum is rotatable about a horizontal axis and which at a lowest point has a drain opening; a drain line which is connected to the drain opening and which is connected to a drain pump or connectable; a turbidity sensor on a fluid line connecting the drain line to an additional port formed in the tub at a higher position than the drain port, the turbidity sensor responsive to turbidity of the fluid flowing through the fluid passage; a pressure sensor responsive to a fluid pressure in the tub dependent fluid pressure for controlling the fluid fill level in the tub.

Eine Waschmaschine dieser Art ist aus der Praxis bekannt. Der Trübungssensor ist ein so genannter Spülsensor, in Abhängigkeit von dessen Signalen Wäschespülvorgänge gesteuert werden. Der Drucksensor ist über eine Druckleitung an eine weitere Zusatzöffnung des Laugenbehälters angeschlossen.A washing machine of this type is known from practice. The turbidity sensor is a so-called rinsing sensor, in response to the signals of which laundry rinsing operations are controlled. The pressure sensor is connected via a pressure line to a further additional opening of the tub.

Aus der DE-Auslegeschrift 28 40 241 ist ein Waschmaschinen-Ablaufstutzen bekannt, an welchen über ein Druckgeberrohr ein Drucksensor angeschlossen ist. Ein Spülsensor ist in dieser Schrift nicht offenbart. Der Drucksensor ist ein Membranschalter, welcher den Wasserstand im Laugenbehälter steuert, insbesondere auf ein vorbestimmtes Maß begrenzt.From DE-Auslegeschrift 28 40 241 a washing machine outlet pipe is known to which a pressure sensor tube via a pressure sensor is connected. A purge sensor is not disclosed in this document. The pressure sensor is a membrane switch which controls the water level in the tub, in particular limited to a predetermined extent.

Aus der DE 196 52 830 A1 ist eine Waschmaschine mit einem Sensor in einer Flüssigkeitsleitung bekannt, welche eine Zusatzöffnung des Laugenbehälters mit der Ablaufleitung des Laugenbehälters an einer Stelle verbindet, welche tiefer als die Zusatzöffnung liegt. Ein Drucksensor ist in dieser Druckschrift nicht offenbart. Der Sensor ist vorzugsweise ein optischer Sensor, welcher einen Lichtsender, zum Beispiel einen Infrarot-LED-Sender, und einen Lichtempfänger, beispielsweise einen Fototransistor, enthält. Je nach Trübungsgrad der Flüssigkeit in der Flüssigkeitsleitung durchdringt mehr oder weniger Licht des Senders die Flüssigkeit bis zum Empfänger. Selbstverständlich sind auch andere bekannte Techniken als Spülsensor verwendbar, welche in Abhängigkeit von der Trübung der Lauge des Laugenbehälters ein Signal erzeugen können.From DE 196 52 830 A1 discloses a washing machine with a sensor in a liquid line is known, which connects an additional opening of the tub with the drain line of the tub at a point which is lower than the additional opening. A pressure sensor is not disclosed in this document. The sensor is preferably an optical sensor which includes a light transmitter, for example an infrared LED transmitter, and a light receiver, for example a phototransistor. Depending on the degree of turbidity of the liquid in the liquid line penetrates more or less Light the transmitter's liquid to the receiver. Of course, other known techniques can be used as rinsing sensor, which can generate a signal depending on the turbidity of the liquor of the tub.

Durch die Erfindung soll die Aufgabe gelöst werden, ein konstruktiv und herstellungsmäßig einfacheres und preiswerteres System zu schaffen. Insbesondere soll eine geringere Anzahl von Bauteilen erzielt und ein Baukastenprinzip ermöglicht werden, bei welchem Baugruppen vormontierbar sind.The invention enables the problem to be solved to provide a structurally and moderately simpler production and cheaper system. In particular, a smaller number of components to be achieved and a modular principle to be possible, in which assemblies are pre-assembled.

Diese Aufgabe wird gemäß der Erfindung durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.This object is achieved according to the invention by the characterizing features of claim 1.

Weitere Merkmale der Erfindung sind in den Unteransprüchen enthalten.Further features of the invention are contained in the subclaims.

Durch die Erfindung wird vermieden, dass für den Drucksensor ein Anschluss am Laugenbehälter erforderlich ist. Ein solcher Anschluss am Laugenbehälter ist nicht nur teuer in der Produktion, sondern verhindert, dass die gleiche Type von Laugenbehälter für eine Vielzahl von verschiedenen Waschmaschinen verwendet werden kann. Durch die Erfindung ist kein Drucksensoranschluss am Laugenbehälter mehr erforderlich, so dass Laugenbehälter in großer Stückzahl für verschiedene Arten von Waschmaschinen produziert werden können.The invention avoids that a connection to the tub is required for the pressure sensor. Such a connection to the tub is not only expensive to produce but also prevents the same type of tub from being used for a variety of different washing machines. The invention no longer requires a pressure sensor connection to the tub, so that tubs can be produced in large numbers for different types of washing machines.

Gemäß der Erfindung sind sowohl der Anschluss für den Spülsensor als auch der Anschluss für den Drucksensor am Ablaufschlauch gebildet. Vorzugsweise sind beide Anschlüsse tangential am Ablaufschlauch angeordnet, vorzugsweise auf der gleichen Seite des Ablaufschlauches. Dadurch werden in der Waschmaschine kurze Leitungswege und ausreichend Freiraum für andere Geräteteile wie beispielsweise die Laugenpumpe erzielt. Ferner ermöglicht es die Erfindung, den Ablaufschlauch mit den Anschlüssen für den Trübungssensor und den Drucksensor als vormontierte Baugruppe auszubilden, die im Baukastenprinzip für verschiedene Arten von Waschmaschinen verwendbar ist.According to the invention, both the connection for the purge sensor and the connection for the pressure sensor are formed on the drain hose. Preferably, both ports are arranged tangentially on the drain hose, preferably on the same side of the drain hose. As a result, short lines and sufficient space for other equipment parts such as the drain pump can be achieved in the washing machine. Furthermore, the invention makes it possible to form the drain hose with the connections for the turbidity sensor and the pressure sensor as a preassembled module that can be used on a modular basis for different types of washing machines.

Die Erfindung wird im folgenden mit Bezug auf die Zeichnungen anhand von bevorzugten Ausführungsformen als Beispiele beschrieben. In den Zeichnungen zeigen

Fig. 1
schematisch Teile einer Waschmaschine nach der Erfindung,
Fig. 2
einen Horizontalschnitt durch ein Ablaufleitungssystem nach der Erfindung der Waschmaschine von Fig. 1,
Fig. 3
einen Horizontalschnitt einer weiteren Ausführungsform eines Ablaufleitungssystems nach der Erfindung für eine Waschmaschine nach Fig. 1.
The invention will now be described by way of example with reference to the drawings of preferred embodiments. In the drawings show
Fig. 1
schematically parts of a washing machine according to the invention,
Fig. 2
3 a horizontal section through a drainage system according to the invention of the washing machine of FIG. 1,
Fig. 3
a horizontal section of another embodiment of a drain line system according to the invention for a washing machine according to Fig. 1st

Die in Fig. 1 dargestellte Waschmaschine hat ein Gehäuse 1, in welchem ein Laugenbehälter 2 schwingfähig montiert ist. Im Laugenbehälter 2 ist eine Wäschetrommel 3 um eine Horizontalachse drehbar angeordnet. Dem Laugenbehälter 2 kann in den oberen Teil von einer Zufuhrleitung 4 über ein Magnetventil 5 und einen Waschmitteleinspülbehälter 6 Wasser und gegebenenfalls Wäschebehandlungsmittel (Waschmittel, Spülmittel, Bleichmittel) zugeführt werden. Der Laugenbehälter 2 ist an seiner tiefsten Stelle mit einer Ablauföffnung 8 versehen, an welche eine Ablaufleitung 10 flüssigkeitsdicht angeschlossen ist, welche an ihrem vom Laugenbehälter 2 entfernten Ende einen besonders leicht biegsamen, vorzugsweise faltenbalgartigen oder wellrohrschlauchartigen stromabwärtigen Endabschnitt 12 hat, der mit der Saugseite einer Laugenpumpe 14 verbunden ist. Mit der Druckseite der Lagenpumpe 14 ist ein Abpumpschlauch 16 verbunden. Der stromabwärtige Ablaufschlauchabschnitt 12 ist an einem im wesentlichen horizontalen Leitungsschenkel des Ablaufschlauches 10 gebildet.The washing machine shown in Fig. 1 has a housing 1, in which a tub 2 is mounted to vibrate. In the tub 2, a laundry drum 3 is arranged rotatably about a horizontal axis. The tub 2 can be fed into the upper part of a supply line 4 via a solenoid valve 5 and a Waschmitteleinspülbehälter 6 water and optionally laundry treatment agent (detergent, detergent, bleach). The tub 2 is provided at its lowest point with a drain opening 8, to which a drain line 10 is connected liquid-tight, which at its end remote from the tub 2 end a particularly easily flexible, preferably bellows or corrugated tubing downstream end portion 12 has, with the suction side of a Lase pump 14 is connected. An exhaust pump 16 is connected to the pressure side of the layer pump 14. The downstream drain hose section 12 is formed on a substantially horizontal leg of the drain hose 10.

Der an die Ablauföffnung 8 des Laugenbehälters 2 angeschlossene stromabaufwärtige Abschnitt 14 ist vorzugsweise ein vertikaler Schenkel des Ablaufschlauches 10. Dieser kann ein Rückschlagventil 16 enthalten, welches eine Rückströmung von der Laugenpumpe 14 in die Ablauföffnung 8 des Laugenbehälters 2 verhindert. Der Ablaufschlauch 10 kann einen Schlauchstutzen 18 für einen Notfall-Entleerungsschlauch haben, für den Fall, dass die Laugenpumpe 14 einen Defekt hat.The connected to the drain opening 8 of the tub 2 downstream upstream portion 14 is preferably a vertical leg of the drain hose 10. This may include a check valve 16, which prevents backflow from the drain pump 14 into the drain opening 8 of the tub 2. The drain hose 10 may have a hose nozzle 18 for an emergency drain hose, in the event that the drain pump 14 has a defect.

Eine Flüssigkeitsleitung 18 verbindet eine höher als die Ablauföffnung 8 gelegene Zusatzöffnung 20 des Laugenbehälters 2 mit dem vertikalen Schenkel 14 des Ablaufschlauches 10 an einer zwischen seinem Rückschlagventil 16 und seinem der Ablauföffnung 8 zugewandten oberen Ende. Während des Betriebes der Waschmaschine kann Lauge oder Wasser durch diese Flüssigkeitsleitung 18 ständig hindurch strömen. Diese Strömung basiert auf einem geringen Druckunterschied der Lauge über der Ablauföffnung 8 und der Zusatzöffnung 20.A liquid line 18 connects a higher than the drain opening 8 located additional opening 20 of the tub 2 with the vertical leg 14 of the drain hose 10 at one between its check valve 16 and its drain opening 8 facing the upper end. During operation of the washing machine may leach or water is constantly flowing through this liquid line 18. This flow is based on a slight pressure difference of the liquor over the drain opening 8 and the additional opening 20.

Die Flüssigkeitsleitung 18 ist mit einem Trübungssensor 22 versehen, welcher in Abhängigkeit von der Trübung der durch die Flüssigkeitsleitung 18 hindurch strömenden Flüssigkeit, insbesondere Lauge, Signale erzeugt, welche über eine Leitung 24 an ein Steuergerät 26 abgegeben werden, welches in Abhängigkeit hiervon den Waschmittelbetrieb steuern kann. Vorzugsweise ist der Trübungssensor 22 ein sogenannter "Spülsensor", in Abhängigkeit von dessen Signalen Wäschespülvorgänge in der Waschmaschine gesteuert werden. Dieser Sensor 22 enthält einen Sender und einen Empfänger, beispielsweise einen optischen Sender, zum Beispiel eine Infrarot-LED, und einen optischen Empfänger, zum Beispiel einen Fototransistor, wie dies aus der DE 196 52 830 A1 bekannt ist. Jedoch kann auch ein Sensor verwendet werden, welcher nach einem anderen Messprinzip arbeitet.The liquid line 18 is provided with a turbidity sensor 22 which, depending on the turbidity of the liquid flowing through the liquid line 18, in particular liquor, generates signals which are delivered via a line 24 to a control device 26, which control the detergent operation in dependence thereon can. Preferably, the turbidity sensor 22 is a so-called "purge sensor", depending on which signals laundry rinsing operations in the washing machine are controlled. This sensor 22 includes a transmitter and a receiver, for example an optical transmitter, for example an infrared LED, and an optical receiver, for example a phototransistor, as known from DE 196 52 830 A1. However, it is also possible to use a sensor which operates according to another measuring principle.

Eine Druckleitung 28 eines Drucksensors 30 des Steuergerätes 26, zum Beispiel eines Membranschalters, verbindet den Ablaufschlauch 10 an einer zwischen dessen Rückschlagventil 16 und dessen an die Ablauföffnung 8 angeschlossenem oberen Ende gelegenen Stelle mit dem Drucksensor 30. Der Drucksensor 30 reagiert in Abhängigkeit von dem im Ablaufschlauch 10 herrschenden Druck, welcher seinerseits abhängig ist vom Flüssigkeitsniveau im Laugenbehälter 2. Dadurch kann durch die Druckleitung 28 und deren Drucksensor 30 oder Druckschalter das Flüssigkeitsniveau im Laugenbehälter 2 gesteuert, insbesondere auf einen Maximalwert begrenzt werden, wie das beispielsweise aus der DE-Auslegeschrift 28 40 241 bekannt ist.A pressure line 28 of a pressure sensor 30 of the control unit 26, for example, a membrane switch, connects the drain hose 10 at a location between the check valve 16 and its connected to the drain port 8 upper end point with the pressure sensor 30. The pressure sensor 30 reacts in dependence on the As a result, the liquid level in the tub 2 can be controlled by the pressure line 28 and its pressure sensor 30 or pressure switch, in particular limited to a maximum value, as for example from DE-Auslegeschrift 28th 40 241 is known.

Die im Ablaufschlauch 10 vorgesehenen Anschlüsse 18-1 bzw. 28-1 der Flüssigkeitsleitung 18 und Druckleitung 28 sind vorzugsweise unmittelbar benachbart zur Ablauföffnung 8 zwischen dem oberen Ende des Ablaufschlauches 10 und dessen Rückschlagventil 16 im vertikalen Schenkel 14 gebildet. Die Anschluss-Stutzen sind ein einstückiges Teil des Ablaufschlauches 10. Die beiden Anschluss-Stutzen 18-1 und 28-1 sind vorzugsweise tangential zum Ablaufschlauch 10 angeordnet. Sie können entsprechend Fig. 1 übereinander angeordnet sein, wobei die Anordnung übereinander hauptsächlich deshalb gewählt wurde, um sie in Fig. 1 sichtbar zu machen.The provided in the drain hose 10 ports 18-1 and 28-1 of the liquid line 18 and pressure line 28 are preferably formed immediately adjacent to the drain opening 8 between the upper end of the drain hose 10 and the check valve 16 in the vertical leg 14. The connection sockets are an integral part of the drain hose 10. The two connection sockets 18-1 and 28-1 are preferably arranged tangentially to the drain hose 10. They can be arranged one above the other according to FIG. 1, the arrangement being chosen one above the other mainly for the purpose of making them visible in FIG.

Fig. 2 zeigt eine bevorzugte Ausführungsform, bei welcher die beiden Anschluss-Stutzen 18-1 und 28-1 im wesentlichen parallel nebeneinander im vertikalen Schenkel 14 des Ablaufschlauches 10 gebildet sind. Dies ist eine raumsparende Ausführungsform, welche außerdem die Bildung von schädlichen Wirbelströmen im Ablaufschlauch vermeidet.FIG. 2 shows a preferred embodiment in which the two connection sockets 18-1 and 28-1 are formed substantially parallel next to one another in the vertical leg 14 of the drain hose 10. This is a space saving embodiment which also avoids the formation of harmful eddy currents in the drain hose.

Fig. 3 zeigt eine Ausführungsform, bei welcher die Anschluss-Stutzen 18-1 und 28-1 zwar ebenfalls tangential zum Ablaufschlauch 10 bzw. dessen vertikalem Schenkel 14 angeordnet sind, jedoch auf entgegengesetzten Seiten des Ablaufschlauches 10. Dies könnte bezüglich der Leitungsführung in der Waschmaschine und auch bezüglich Strömungen im Ablaufschlauch 10 ungünstiger als die Fig. 2 sein.Although FIG. 3 shows an embodiment in which the connection stubs 18-1 and 28-1 are likewise arranged tangentially to the drain hose 10 or its vertical leg 14, but on opposite sides of the drain hose 10. This could be with respect to the wiring in the Washing machine and also with respect to currents in the drain hose 10 less favorable than Fig. 2 be.

Der Ablaufschlauch 10 besteht in bekannter Weise vorzugsweise aus flexiblem Material, beispielsweise Gummi, und ist in bekannter Weise an die Ablauföffnung 8 des Laugenbehälters 2 aufgesteckt oder angesteckt oder in anderer Weise lösbar verbunden.The drain hose 10 is preferably made in a known manner of flexible material, such as rubber, and is plugged or infected in a known manner to the drain opening 8 of the tub 2 or releasably connected in any other way.

Claims (9)

  1. Washing machine comprising a solution container (2), in which a laundry drum (3) is rotatable about a horizontal axis and which has, at a deepest point, a drain opening (8), a drain duct (10), which is connected with the drain opening (8) and which is connected or connectible with a solution pump (14), a turbidity sensor (22) at a liquid duct (18), which connects the drain duct (10) with an additional opening (20) formed in the solution container (2) at a higher point than the drain opening (8), wherein the turbidity sensor (22) responds to the turbidity of the liquid which flows through the liquid duct, and a pressure sensor (30), which responds to a liquid pressure dependent on the liquid level in the solution container (2), for control of the liquid filling level in the solution container, characterised in that the drain duct (10) is provided with a pressure duct connection (28-1) for the pressure sensor (30), by way of which the liquid pressure is transmissible from the drain duct (10) to the pressure sensor (30), and that the drain duct (10), the pressure duct connection (28-1) and the connection (18-1) of the liquid duct (18) are together an integral body.
  2. Washing machine according to claim 1, characterised in that the pressure duct connection (28-1) and the connection (18-1) of the liquid duct (18) are provided at the drain duct (10) on the same side of this drain duct.
  3. Washing machine according to one of the preceding claims, characterised in that the pressure duct connection (28-1) and the connection (18-1) of the liquid duct (18) with the drain duct (10) are each arranged approximately tangentially to the drain duct.
  4. Washing machine according to one of the preceding claims, characterised in that the pressure duct connection (28-1) is formed at the drain duct (10) directly adjacent to the drain opening (8) of the solution container (2).
  5. Washing machine according to one of the preceding claims, characterised in that the connection (18-1) of the liquid duct (18) with the drain duct (10) is formed directly adjacent to the drain opening (8) of the solution container (2).
  6. Washing machine according to claim 5, characterised in that the integral body consists of a flexible material.
  7. Washing machine according to claim 6, characterised in that the integral body consists of rubber.
  8. Washing machine according to one of the preceding claims, characterised in that the turbidity sensor is a rinsing sensor (22) for control of laundry rinsing processes.
  9. Washing machine according to one of the preceding claims, characterised in that the pressure sensor (30) is a diaphragm switch.
EP01986848A 2000-12-08 2001-12-03 Washing machine Expired - Lifetime EP1341955B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10061237 2000-12-08
DE10061237A DE10061237A1 (en) 2000-12-08 2000-12-08 Washing machine
PCT/EP2001/014124 WO2002046514A2 (en) 2000-12-08 2001-12-03 Washing machine

Publications (2)

Publication Number Publication Date
EP1341955A2 EP1341955A2 (en) 2003-09-10
EP1341955B1 true EP1341955B1 (en) 2006-12-06

Family

ID=7666394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01986848A Expired - Lifetime EP1341955B1 (en) 2000-12-08 2001-12-03 Washing machine

Country Status (8)

Country Link
US (1) US6901777B2 (en)
EP (1) EP1341955B1 (en)
JP (1) JP2004515286A (en)
KR (1) KR20030066659A (en)
AT (1) ATE347632T1 (en)
DE (2) DE10061237A1 (en)
ES (1) ES2275752T3 (en)
WO (1) WO2002046514A2 (en)

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SI22680A (en) 2007-12-28 2009-06-30 Itw Metalflex, D.O.O. Tolmin Multipurpose transformer for device which uses water
KR20100027031A (en) * 2008-08-28 2010-03-10 주식회사 대우일렉트로닉스 Circulation apparatus and method of drum washing machine
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DE102007040080A1 (en) 2007-08-24 2009-02-26 BSH Bosch und Siemens Hausgeräte GmbH Apparatus and method for determining a level within a tub of a washing machine
WO2009027242A1 (en) 2007-08-24 2009-03-05 BSH Bosch und Siemens Hausgeräte GmbH Device and method for determining a fill level within a suds tub of a washing machine

Also Published As

Publication number Publication date
ATE347632T1 (en) 2006-12-15
ES2275752T3 (en) 2007-06-16
KR20030066659A (en) 2003-08-09
DE10061237A1 (en) 2002-06-27
DE50111600D1 (en) 2007-01-18
US20040007029A1 (en) 2004-01-15
JP2004515286A (en) 2004-05-27
WO2002046514A2 (en) 2002-06-13
US6901777B2 (en) 2005-06-07
EP1341955A2 (en) 2003-09-10
WO2002046514A3 (en) 2002-07-25

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