EP2055958A2 - Water-guiding household device with a pump with a valve function - Google Patents

Water-guiding household device with a pump with a valve function Download PDF

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Publication number
EP2055958A2
EP2055958A2 EP08105509A EP08105509A EP2055958A2 EP 2055958 A2 EP2055958 A2 EP 2055958A2 EP 08105509 A EP08105509 A EP 08105509A EP 08105509 A EP08105509 A EP 08105509A EP 2055958 A2 EP2055958 A2 EP 2055958A2
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EP
European Patent Office
Prior art keywords
water
pump
valve
motor
household appliance
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.)
Granted
Application number
EP08105509A
Other languages
German (de)
French (fr)
Other versions
EP2055958A3 (en
EP2055958B1 (en
Inventor
Stephan Lutz
Bruno Reiter
Michael Rosenbauer
Martin Stickel
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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Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL08105509T priority Critical patent/PL2055958T3/en
Publication of EP2055958A2 publication Critical patent/EP2055958A2/en
Publication of EP2055958A3 publication Critical patent/EP2055958A3/en
Application granted granted Critical
Publication of EP2055958B1 publication Critical patent/EP2055958B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/042—Axially shiftable rotors
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • 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
    • D06F39/083—Liquid discharge or recirculation arrangements
    • 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
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2283—Rotors specially for centrifugal pumps with special measures for reverse pumping action

Definitions

  • the invention relates to a water-conducting household appliance, in particular a dishwasher or washing machine according to the preamble of patent claim 1.
  • Water-conducting household appliances such as dishwashers, have a line system that allows to promote wash liquor after completion of a cleaning process from the water-bearing household appliance in a house-side sewage disposal system.
  • a drain pump is provided for this purpose, which stands for this purpose with a pipe system of the water-conducting household appliance in combination.
  • a washer for a dishwasher which additionally has a valve function, which allows to prevent unwanted flow processes in the duct system of the dishwasher, such as a vacuuming of the household appliance by currents in the home-side sanitation system.
  • the impeller in the pump is also formed as a valve body and arranged coaxially displaceable along an axis on which the valve body is arranged, wherein the axis is in operative connection with a motor for driving the pump.
  • spring means or alternatively electromagnets may be used as actuators.
  • the invention relates to a water-conducting household appliance, water-conducting household appliance, in particular dishwashing or washing machine, comprising at least one connected to a line system of the water-conducting household appliance in connection pump, which communicates with a motor, and with a valve with an axially movable valve body, at the impeller of the pump is arranged.
  • the pump with a valve may be a drain pump, which serves to flush a rinsing process at the end of a rinsing process, which may be additionally mixed with dirt particles from a treatment room, such as a washing container of a dishwasher, in a house-side sanitation system promote.
  • the valve body can be moved independently of the impeller between a first position in which the valve is open and a second position in which the valve is closed, ie, in which the impeller and the valve body are two components.
  • it is provided to carry out the pump integrally with a valve, ie, the impeller of the pump at the same time forms a valve body for blocking a passage of the pump, said component axially, in particular axially along a motor axis for driving the pump can be moved so to open or close the valve.
  • the object of the invention is achieved in that the motor is operable in two directions of rotation and opens or closes the valve in dependence on the direction of rotation of the motor.
  • a controlled opening and closing of the valve can be achieved and thus a blocking of the passage of the pump.
  • no venting of the pump serving as a drain pump is necessary in the case of a dishwasher.
  • the motor is in operative connection with the valve, so that it is ensured that the valve is opened or closed solely by the arbitrary direction of rotation of the motor and is not influenced by flow conditions in the water system of the household appliance in an unintentional manner.
  • valve has a movable between an open and closed position valve body, wherein in the open position, a passage is released from an inlet to an outlet of the pump and the pump is able to promote wash liquor and in the closed position, this passage is closed, so even at flow-related negative pressure conditions no flow can occur in the pipe system of the water-conducting household appliance.
  • valve body can take any position between the open and the closed position, so as to allow, for example, a volume control.
  • valve body is axially movable along a motor and pump connecting shaft. This allows a particularly simple structure with a direct connection of motor and pump.
  • a transmission is preferably provided between the motor and the valve.
  • the transmission converts a rotational movement of the shaft in a linear, coaxial to the shaft running movement.
  • the gear preferably has a threaded spindle, which is designed such that, depending on a direction of rotation, the valve body is moved from an open to the closed position and is moved in reversing the direction of rotation of the motor from the closed to the open position.
  • the motor used can be any electric motor commonly used in water-conducting domestic appliances.
  • brushless DC or AC permanent magnet motors may be used, such as BLDC or BLAC motors.
  • Brushless DC or AC motors can allow a sensorless detection of the speed of the motor and thus blocking the drive, so that detection of a blocking of the drive can be detected without additional sensors, especially when due to a change of direction caused the valve from the open in the closed position or vice versa is moved and the further movement is limited by a stop.
  • BLCD and BLAC motors also allow a quick change of direction and thus a utilization of the inertia of the impeller of the pump to effect a position change, without the need for further mechanical aids are required.
  • the engine with a control of the water-conducting household appliance in the invention in the way that a closed valve is detected and according to the engine is not controlled. Furthermore, it can be provided so easily to respond to the error that blocking at a Change of direction does not occur, eg by refilling a certain amount of fresh water with simultaneous pumping.
  • a drain line is arranged below the Spül electer convinceds, that is, that the water-conducting domestic appliance has no siphon-forming drain guide and drain venting, which form a backstop.
  • the water-conducting household appliance has a simplified structure, wherein the space gained can be used, for example, to improve the insulation or for the arrangement of buffers for rinsing liquor.
  • the pump can be dimensioned smaller in terms of its performance, which provides energy savings and additional space gain.
  • valve body seal is arranged on a cover of the pump, so that a particularly simple structure results, which also facilitates the performance of maintenance or repair work.
  • Impeller of the pump is arranged axially movable together with the valve body of the valve, i. Impeller and valve body are a component and movable between a first position in which the valve is open and a second position in which the valve is closed.
  • the invention relates to a pump according to the invention for a household appliance according to the invention.
  • the washing machine pump 2 serving as a drain pump has a passage 24 with a pump space 22, the passage 24 being connected to an inlet port (not shown) and to a pump Outlet port (not shown) to a conduit system (not shown) of a dishwasher are connected.
  • an impeller 14 is rotatably mounted on a shaft 6.
  • the shaft 6 connects to a motor 18, such as a BLDC or BLAC motor, which is connected to a controller (not shown) of a water-conducting domestic appliance for driving.
  • the impeller 14 has at its front end to a valve body 20 which abuts in the closed position (not shown) on the inside of the pump chamber 22 arranged seal 10 and thus causes a secure closure of the passage of the pump.
  • a further seal 12 is also provided on the pump cover 16.
  • valve body 20 and the seal 10, the valve 4.
  • the valve body 20 is fixedly connected to the impeller 14 and in particular in one piece, for example made of plastic, formed.
  • the impeller 14 further includes a spindle gear having thread 8, which is in engagement with the shaft 6 and allows, depending on the direction of rotation of the shaft 6, the impeller 14 is moved with the valve body 20 from the open to the closed position or vice versa ,
  • the spindle gear (not shown) of the transmission 8 the rotational movement of the shaft 6 in a coaxial with the shaft 6 extending, linear, direction of rotation dependent reciprocation of the valve body 20 to.

Abstract

The device has a pump (2) connected with a pipeline system of the device, where the pump stands in connection with a motor (18) e.g. brushless direct current motor. A valve (4) has an axially movable valve body (20) that is attached at an impeller of the pump, and the motor is operable in two directions. The valve opens or closes in dependent of the directions of rotation of the motor, where the motor stands in effective connection with the valve. The valve body is coaxially movable along a shaft (6) connecting the motor and the pump.

Description

Die Erfindung betrifft ein wasserführendes Haushaltsgerät, insbesondere eine Geschirrspül- oder Waschmaschine nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a water-conducting household appliance, in particular a dishwasher or washing machine according to the preamble of patent claim 1.

Wasserführende Haushaltsgeräte, wie beispielsweise Geschirrspülmaschinen, weisen ein Leitungssystem auf, das es erlaubt, Spülflotte nach Beendigung eines Reinigungsvorganges aus dem wasserführenden Haushaltsgerät in ein hausseitiges Abwasserentsorgungssystem zu fördern. In Geschirrspülmaschinen ist hierfür eine Laugenpumpe vorgesehen, die hierzu mit einem Leitungssystem des wasserführenden Haushaltsgeräts in Verbindung steht.Water-conducting household appliances, such as dishwashers, have a line system that allows to promote wash liquor after completion of a cleaning process from the water-bearing household appliance in a house-side sewage disposal system. In dishwashers a drain pump is provided for this purpose, which stands for this purpose with a pipe system of the water-conducting household appliance in combination.

Aus der EP 17 67 788 A1 ist eine Laugenpumpe für eine Geschirrspülmaschine bekannt, die zusätzlich eine Ventilfunktion aufweist, die es erlaubt, unerwünschte Strömungsvorgänge in dem Leitungssystem der Geschirrspülmaschine zu verhindern, z.B. ein Leersaugen des Haushaltsgerätes durch Strömungen in dem hausseitigen Abwasserentsorgungssystem. Dabei ist das Flügelrad in der Pumpe zugleich als Ventilkörper ausgebildet und koaxial entlang einer Achse verschiebbar angeordnet, auf der der Ventilkörper angeordnet ist, wobei die Achse mit einem Motor zum Antrieb der Pumpe in Wirkverbindung steht. Zur axialen Verschiebung des Ventilkörpers zwischen einer geöffneten und einer geschlossenen Position können Federmittel oder alternativ Elektromagnete als Aktuatoren Verwendung finden. Die Vorrichtung gemäß der EP 17 67 788 A1 weist jedoch einen komplizierten Aufbau auf.From the EP 17 67 788 A1 a washer for a dishwasher is known, which additionally has a valve function, which allows to prevent unwanted flow processes in the duct system of the dishwasher, such as a vacuuming of the household appliance by currents in the home-side sanitation system. In this case, the impeller in the pump is also formed as a valve body and arranged coaxially displaceable along an axis on which the valve body is arranged, wherein the axis is in operative connection with a motor for driving the pump. For axial displacement of the valve body between an open and a closed position, spring means or alternatively electromagnets may be used as actuators. The device according to the EP 17 67 788 A1 However, it has a complicated structure.

Es ist daher Aufgabe der Erfindung, eine Alternative mit einem einfachen Aufbau anzugeben.It is therefore an object of the invention to provide an alternative with a simple structure.

Die Erfindung geht aus von einem wasserführenden Haushaltsgerät, Wasserführendes Haushaltsgerät, insbesondere Geschirrspül- oder Waschmaschine, wenigstens aufweisend eine mit einem Leitungssystem des wasserführenden Haushaltsgerätes in Verbindung stehende Pumpe, die mit einem Motor in Verbindung steht, und mit einem Ventil mit einem axial bewegbaren Ventilkörper, der am Pumpenrad der Pumpe angeordnet ist. Dabei kann es sich bei der Pumpe mit einem Ventil um eine Laugenpumpe handeln, die dazu dient, am Ende eines Spülvorgangs verschmutzte Spülflotte, die zusätzlich mit Schmutzpartikeln versetzt sein kann, aus einem Behandlungsraum, wie beispielsweise einem Spülbehälter einer Geschirrspülmaschine, in ein hausseitiges Abwasserentsorgungssystem zu fördern. Der Ventilkörper kann unabhängig von dem Pumpenrad zwischen einer ersten Position, in der das Ventil geöffnet ist und einer zweiten Position, in der das Ventil geschlossen ist, bewegt werden, d.h. es handelt sich bei dem Pumpenrad und dem Ventilkörper um zwei Bauteile. Vorzugsweise ist jedoch vorgesehen, die Pumpe mit einem Ventil integral auszuführen, d.h., das Pumpenrad der Pumpe bildet zugleich einen Ventilkörper zum Sperren eines Durchgangs der Pumpe, wobei dieses Bauteil axial, insbesondere axial entlang einer Motorachse zum Antrieb der Pumpe bewegt werden kann, um so das Ventil zu öffnen oder zu schließen.The invention relates to a water-conducting household appliance, water-conducting household appliance, in particular dishwashing or washing machine, comprising at least one connected to a line system of the water-conducting household appliance in connection pump, which communicates with a motor, and with a valve with an axially movable valve body, at the impeller of the pump is arranged. In this case, the pump with a valve may be a drain pump, which serves to flush a rinsing process at the end of a rinsing process, which may be additionally mixed with dirt particles from a treatment room, such as a washing container of a dishwasher, in a house-side sanitation system promote. The valve body can be moved independently of the impeller between a first position in which the valve is open and a second position in which the valve is closed, ie, in which the impeller and the valve body are two components. Preferably, however, it is provided to carry out the pump integrally with a valve, ie, the impeller of the pump at the same time forms a valve body for blocking a passage of the pump, said component axially, in particular axially along a motor axis for driving the pump can be moved so to open or close the valve.

Die Aufgabe der Erfindung wird dadurch gelöst, dass der Motor in zwei Drehrichtungen betreibbar ist und das Ventil in Abhängigkeit von der Drehrichtung des Motors öffnet oder schließt. Somit kann durch einfache Art und Weise ein gesteuertes Öffnen und Schließen des Ventils erreicht werden und damit eine Sperrung des Durchgangs der Pumpe. Ferner ist keine Entlüftung der als Laugenpumpe dienenden Pumpe im Fall einer Geschirrspülmaschine nötig.The object of the invention is achieved in that the motor is operable in two directions of rotation and opens or closes the valve in dependence on the direction of rotation of the motor. Thus, by a simple manner, a controlled opening and closing of the valve can be achieved and thus a blocking of the passage of the pump. Furthermore, no venting of the pump serving as a drain pump is necessary in the case of a dishwasher.

Dabei ist bevorzugt vorgesehen, dass der Motor in Wirkverbindung mit dem Ventil steht, sodass sichergestellt ist, dass allein durch die beliebige Drehrichtung des Motors das Ventil geöffnet oder geschlossen wird und nicht durch Strömungsverhältnisse im Leitungssystem des wasserführenden Haushaltsgerätes in ungewollter Weise beeinflusst wird.In this case, it is preferably provided that the motor is in operative connection with the valve, so that it is ensured that the valve is opened or closed solely by the arbitrary direction of rotation of the motor and is not influenced by flow conditions in the water system of the household appliance in an unintentional manner.

Ferner weist das Ventil einen zwischen einer geöffneten und geschlossenen Stellung bewegbaren Ventilkörper auf, wobei bei geöffneter Stellung ein Durchgang von einem Einlass zu einem Auslass der Pumpe freigegeben ist und die Pumpe Spülflotte zu fördern vermag und bei geschlossener Stellung dieser Durchgang geschlossen ist, sodass auch bei strömungsbedingten Unterdruckverhältnissen keine Strömung in dem Leitungssystem des wasserführenden Haushaltsgerätes auftreten kann. Jedoch ist es auch denkbar, dass der Ventilkörper beliebige Stellungen zwischen der geöffneten und der geschlossenen Stellung einnehmen kann, um so beispielsweise eine Mengenregulierung zu ermöglichen.Further, the valve has a movable between an open and closed position valve body, wherein in the open position, a passage is released from an inlet to an outlet of the pump and the pump is able to promote wash liquor and in the closed position, this passage is closed, so even at flow-related negative pressure conditions no flow can occur in the pipe system of the water-conducting household appliance. However, it is also conceivable that the valve body can take any position between the open and the closed position, so as to allow, for example, a volume control.

Vorzugsweise ist vorgesehen, dass der Ventilkörper axial entlang einer Motor und Pumpe verbindenden Welle bewegbar ist. Dies erlaubt einen besonders einfachen Aufbau mit einer direkten Verbindung von Motor und Pumpe.It is preferably provided that the valve body is axially movable along a motor and pump connecting shaft. This allows a particularly simple structure with a direct connection of motor and pump.

Um in Abhängigkeit von der Drehrichtung des Motors ein Öffnen und Schließen des Ventils zu bewirken ist vorzugsweise zwischen Motor und Ventil ein Getriebe vorgesehen. Dabei wandelt das Getriebe eine Drehbewegung der Welle in eine lineare, zur Welle koaxiale verlaufende Bewegung um. Hierzu weist das Getriebe vorzugsweise eine Gewindespindel auf, die derart ausgebildet ist, dass in Abhängigkeit von einer Drehrichtung, der Ventilkörper aus einer geöffneten in die geschlossene Position bewegt wird und bei Umkehrung der Drehrichtung des Motors aus der geschlossenen in die geöffnete Position bewegt wird.In order to effect opening and closing of the valve depending on the direction of rotation of the motor, a transmission is preferably provided between the motor and the valve. In this case, the transmission converts a rotational movement of the shaft in a linear, coaxial to the shaft running movement. For this purpose, the gear preferably has a threaded spindle, which is designed such that, depending on a direction of rotation, the valve body is moved from an open to the closed position and is moved in reversing the direction of rotation of the motor from the closed to the open position.

Als Motor kann jeder in wasserführenden Haushaltsgeräten übliche Elektromotor verwendet werden. Vorzugsweise ist jedoch vorgesehen, dass bürstenlose Gleichstrom- oder Wechselstrommotoren mit Permanentmagneten Verwendung finden, wie beispielsweise BLDC- oder BLAC-Motoren. Bürstenlose Gleichstrom- oder Wechselstrommotoren können eine sensorlose Erfassung der Drehzahl des Motors und damit ein Blockieren des Antriebs erlauben, sodass ohne zusätzlich Sensoren eine Erfassung eines Blockieren des Antriebs erkannt werden kann, insbesondere auch, wenn durch einen Drehrichtungswechsel bedingt das Ventil von der geöffneten in die geschlossene Position oder umgekehrt bewegt wird und die weitere Bewegung durch einen Anschlag begrenzt ist. BLCD- und BLAC-Motoren erlauben ferner einen schnellen Drehrichtungswechsel und damit eine Ausnutzung der Trägheit des Flügelrades der Pumpe, um einen Positionswechsel zu bewirken, ohne das hierzu weitere mechanische Hilfsmittel nötig sind.The motor used can be any electric motor commonly used in water-conducting domestic appliances. Preferably, however, it is contemplated that brushless DC or AC permanent magnet motors may be used, such as BLDC or BLAC motors. Brushless DC or AC motors can allow a sensorless detection of the speed of the motor and thus blocking the drive, so that detection of a blocking of the drive can be detected without additional sensors, especially when due to a change of direction caused the valve from the open in the closed position or vice versa is moved and the further movement is limited by a stop. BLCD and BLAC motors also allow a quick change of direction and thus a utilization of the inertia of the impeller of the pump to effect a position change, without the need for further mechanical aids are required.

Dabei steht vorzugsweise der Motor mit einer Steuerung des wasserführenden Haushaltsgerätes in Erfindung, in der Art, dass ein geschlossenes Ventil erfasst wird und entsprechend der Motor nicht weiter angesteuert wird. Ferner kann so problemlos vorgesehen sein, auf den Fehlerfall zu reagieren, dass ein Blockieren bei einem Drehrichtungswechsel ausbleibt, z.B. durch Nachfüllen einer bestimmten Menge Frischwasser bei gleichzeitigem Abpumpen.In this case, preferably the engine with a control of the water-conducting household appliance in the invention, in the way that a closed valve is detected and according to the engine is not controlled. Furthermore, it can be provided so easily to respond to the error that blocking at a Change of direction does not occur, eg by refilling a certain amount of fresh water with simultaneous pumping.

Ferner ist vorzugsweise vorgesehen, dass eine Ablaufleitung unterhalb des Spülbehälterbodens angeordnet ist, d.h., dass das wasserführende Haushaltsgerät weist keinen einen Siphon bildende Ablaufführung und Ablaufbelüftung auf, die eine Rücklaufsperre bilden. Somit weist das wasserführende Haushaltsgerät einen vereinfachten Aufbau auf, wobei der gewonnene Bauraum beispielsweise zur Verbesserung der Dämmung oder zur Anordnung von Zwischenspeichern für Spülflotte verwendet werden kann. Zugleich kann die Pumpe von ihrer Leistungsfähigkeit her geringer dimensioniert werden, was eine Energieersparnis und einen zusätzlichen Bauraumgewinn liefert.Furthermore, it is preferably provided that a drain line is arranged below the Spülbehälterbodens, that is, that the water-conducting domestic appliance has no siphon-forming drain guide and drain venting, which form a backstop. Thus, the water-conducting household appliance has a simplified structure, wherein the space gained can be used, for example, to improve the insulation or for the arrangement of buffers for rinsing liquor. At the same time, the pump can be dimensioned smaller in terms of its performance, which provides energy savings and additional space gain.

Außerdem ist vorzugsweise vorgesehen, dass eine mit dem Ventilkörper zusammenwirkende Dichtung an einem Deckel der Pumpe angeordnet ist, sodass sich ein besonders einfacher Aufbau ergibt, der auch die Durchführung von Wartung- oder Instandsetzungsarbeiten erleichtert.In addition, it is preferably provided that a cooperating with the valve body seal is arranged on a cover of the pump, so that a particularly simple structure results, which also facilitates the performance of maintenance or repair work.

Schließlich ist vorzugsweise vorgesehen, dass das Pumpenrad der Pumpe zusammen mit dem Ventilkörper des Ventils axial bewegbar angeordnet ist, d.h. Pumpenrad und Ventilkörper sind ein Bauteil und zwischen einer ersten Position bewegbar, in der das Ventil geöffnet ist und einer zweiten Position, in der das Ventil geschlossen ist.Finally, it is preferably provided that the impeller of the pump is arranged axially movable together with the valve body of the valve, i. Impeller and valve body are a component and movable between a first position in which the valve is open and a second position in which the valve is closed.

Ferner gehört zur Erfindung eine erfindungsgemäße Pumpe für ein erfindungsgemäßes Haushaltsgerät.Furthermore, the invention relates to a pump according to the invention for a household appliance according to the invention.

Im Folgenden wird die Erfindung anhand der Zeichnung erläutert. Es zeigt:In the following the invention will be explained with reference to the drawing. It shows:

Fig. 1Fig. 1
Eine schematische Darstellung eines Ausführungsbeispiels einer Pumpe mit einem Ventil gemäß der Erfindung in schematischer Darstellung.A schematic representation of an embodiment of a pump with a valve according to the invention in a schematic representation.

Die als Laugenpumpe dienende Pumpe 2 für eine Geschirrspülmaschine (nicht dargestellt) weist einen Durchgang 24 mit einem Pumpenraum 22 auf, wobei der Durchgang 24 mit einem Einlassanschluss (nicht dargestellt) und einem Auslassanschluss (nicht dargestellt) an ein Leitungssystem (nicht dargestellt) einer Geschirrspülmaschine angeschlossen sind.The washing machine pump 2 (not shown) serving as a drain pump has a passage 24 with a pump space 22, the passage 24 being connected to an inlet port (not shown) and to a pump Outlet port (not shown) to a conduit system (not shown) of a dishwasher are connected.

In dem Pumpenraum 22 ist ein Flügelrad 14 drehbar auf einer Welle 6 angeordnet. Die Welle 6 stellt eine Verbindung mit einem Motor 18, wie beispielsweise einem BLDC- oder BLAC-Motor her, der mit einer Steuerung (nicht dargestellt) eines wasserführenden Haushaltsgerätes zur Ansteuerung verbunden ist.In the pump chamber 22, an impeller 14 is rotatably mounted on a shaft 6. The shaft 6 connects to a motor 18, such as a BLDC or BLAC motor, which is connected to a controller (not shown) of a water-conducting domestic appliance for driving.

Das Flügelrad 14 weist an seinem vorderen Ende einen Ventilkörper 20 auf, der in der geschlossenen Position (nicht dargestellt) an der Innenseite des Pumpenraums 22 angeordneten Dichtung 10 anliegt und so einen sicheren Verschluss des Durchgangs der Pumpe bewirkt. Zur Abdichtung ist ferner am Pumpendeckel 16 eine weitere Dichtung 12 vorgesehen.The impeller 14 has at its front end to a valve body 20 which abuts in the closed position (not shown) on the inside of the pump chamber 22 arranged seal 10 and thus causes a secure closure of the passage of the pump. For sealing a further seal 12 is also provided on the pump cover 16.

Zusammen bilden der Ventilkörper 20 und die Dichtung 10 das Ventil 4. Dabei ist der Ventilkörper 20 mit dem Flügelrad 14 fest verbunden und insbesondere einstückig, beispielsweise aus Kunststoff, gebildet.Together, the valve body 20 and the seal 10, the valve 4. In this case, the valve body 20 is fixedly connected to the impeller 14 and in particular in one piece, for example made of plastic, formed.

Das Flügelrad 14 weist ferner ein ein Spindelgetriebe aufweisendes Gewinde 8 auf, das in Eingriff mit der Welle 6 steht und es erlaubt, dass je nach Drehrichtung der Welle 6 das Flügelrad 14 mit dem Ventilkörper 20 von der geöffneten in die geschlossene Position oder umgekehrt bewegt wird. Hierzu wandelt das Spindelgetriebe (nicht dargestellt) des Getriebes 8 die Drehbewegung der Welle 6 in eine koaxial zur Welle 6 verlaufende, lineare, drehrichtungsabhängige Hin- und Herbewegung des Ventilskörpers 20 um.The impeller 14 further includes a spindle gear having thread 8, which is in engagement with the shaft 6 and allows, depending on the direction of rotation of the shaft 6, the impeller 14 is moved with the valve body 20 from the open to the closed position or vice versa , For this purpose, the spindle gear (not shown) of the transmission 8, the rotational movement of the shaft 6 in a coaxial with the shaft 6 extending, linear, direction of rotation dependent reciprocation of the valve body 20 to.

Im Betrieb erfolgt ein Öffnen des Ventils 4 durch Ansteuern des Motors 18, worauf durch das Getriebe 8 eine Umwandlung der Drehbewegung der Welle 6 in eine lineare Verschiebung des Ventilkörpers 20 aus der geschlossen in die in Fig. 1 dargestellt offene Position erfolgt. Wenn diese Position erreicht ist, stoppt ein Anschlag (nicht dargestellt) diese Bewegung. Zugleich erfasst die Steuerung der Geschirrspülmaschine, dass diese Bewegung durch den Anschlag blockiert ist und beendet hierauf diesen Vorgang. Anschließend kann Flüssigkeit durch antreiben des Flügelrades 4 gefördert werden. Zum Verschließen wird der Motor 18 in entgegen gesetzter Richtung angetrieben, sodass der Ventilkörper 20 aus der offenen in die geschlossene Position bewegt wird, bis diese Bewegung wieder durch einen Anschlag begrenzt und von der Steuerung erfasst wird.In operation, opening of the valve 4 by driving the motor 18, followed by the transmission 8, a conversion of the rotational movement of the shaft 6 in a linear displacement of the valve body 20 from the closed in the in Fig. 1 shown open position occurs. When this position is reached, a stop (not shown) stops this movement. At the same time, the control of the dishwasher detects that this movement is blocked by the stop and then ends this process. Subsequently, liquid can be conveyed by driving the impeller 4. For closing the motor 18 is driven in the opposite direction, so that the Valve body 20 is moved from the open to the closed position until this movement is again limited by a stop and detected by the controller.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

22
Pumpepump
44
VentilValve
66
Wellewave
88th
Getriebetransmission
1010
Dichtungpoetry
1212
Dichtungpoetry
1414
Flügelradimpeller
1616
Deckelcover
1818
Motorengine
2020
Ventilkörpervalve body
2222
Pumpenraumpump room
2424
Durchgangpassage

Claims (12)

Wasserführendes Haushaltsgerät, insbesondere Geschirrspül- oder Waschmaschine, wenigstens aufweisend eine mit einem Leitungssystem des wasserführenden Haushaltsgerätes in Verbindung stehende Pumpe (2), die mit einem Motor (18) in Verbindung steht, und mit einem Ventil (4) mit einem axial bewegbaren Ventilkörper (20), der am Pumpenrad der Pumpe (2) angeordnet ist, dadurch gekennzeichnet, dass der Motor (18) in zwei Richtungen betreibbar ist und das Ventil (4) in Abhängigkeit von der Drehrichtung des Motors (18) öffnet oder schließt.Water-conducting domestic appliance, in particular dishwashing or washing machine, comprising at least one pump (2) which is in communication with a line system of the water-conducting domestic appliance and which is in communication with a motor (18), and with a valve (4) with an axially movable valve body ( 20) disposed on the impeller of the pump (2), characterized in that the motor (18) is operable in two directions and opens or closes the valve (4) in response to the direction of rotation of the motor (18). Wasserführendes Haushaltsgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Motor (18) in Wirkverbindung mit dem Ventil (4) steht.Water-conducting household appliance according to claim 1, characterized in that the motor (18) is in operative connection with the valve (4). Wasserführendes Haushaltsgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Ventil (4) einen zwischen einer geöffneten und einer geschlossenen Stellung bewegbaren Ventilkörper (20) aufweist.Water-conducting domestic appliance according to claim 1 or 2, characterized in that the valve (4) has a movable between an open and a closed position valve body (20). Wasserführendes Haushaltsgerät nach Anspruch 3, dadurch gekennzeichnet, dass der Ventilkörper (20) koaxial entlang einer den Motor (18) und die Pumpe (2) verbindenden Welle (6) bewegbar ist.Water-conducting household appliance according to claim 3, characterized in that the valve body (20) coaxially along a motor (18) and the pump (2) connecting shaft (6) is movable. Wasserführendes Haushaltsgerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass zwischen Motor (18) und Ventil (4) mittels eines Getriebe (8) miteinander verbunden sind.Water-conducting household appliance according to one of the preceding claims, characterized in that between the motor (18) and valve (4) by means of a transmission (8) are interconnected. Wasserführendes Haushaltsgerät nach Anspruch 5, dadurch gekennzeichnet, dass das Getriebe (8) ein Spindelgetriebe aufweist.Water-conducting household appliance according to claim 5, characterized in that the transmission (8) has a spindle gear. Wasserführendes Haushaltsgerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Motor (18) ein BLDC- oder BLAC-Motor ist.Water-conducting domestic appliance according to one of the preceding claims, characterized in that the motor (18) is a BLDC or BLAC motor. Wasserführendes Haushaltsgerät nach Anspruch 7, dadurch gekennzeichnet, dass der Motor (18) mit einer Steuerung des wasserführenden Haushaltsgerätes in Verbindung steht, derart, dass wenigstens ein geschlossenes Ventil (4) erfasst wird.Water-conducting household appliance according to claim 7, characterized in that the motor (18) is in communication with a controller of the water-conducting household appliance, such that at least one closed valve (4) is detected. Wasserführendes Haushaltsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Ablaufleitung des wasserführenden Haushaltsgerätes unterhalb eines Spülbehalterbodens des wasserführenden Haushaltsgerätes angeordnet ist.Water-conducting household appliance according to one of the preceding claims, characterized in that a drain line of the water-conducting household appliance is arranged below a Spülbehalterbodens the water-bearing household appliance. Wasserführendes Haushaltsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine mit dem Ventilkörper (20) zusammenwirkende Dichtung (10) an einem Deckel (16) der Pumpe (2) angeordnet ist.Water-conducting household appliance according to one of the preceding claims, characterized in that a with the valve body (20) cooperating seal (10) on a cover (16) of the pump (2) is arranged. Wasserführendes Haushaltsgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Pumpenrad der Pumpe (2) zusammen mit dem Ventilkörper (20) des Ventils (4) axial bewegbar angeordnet ist.Water-conducting household appliance according to one of the preceding claims, characterized in that the impeller of the pump (2) is arranged axially movable together with the valve body (20) of the valve (4). Pumpe mit einem Ventil für ein wasserführendes Haushaltsgerät nach einem der vorhergehenden Ansprüche.Pump with a valve for a water-conducting domestic appliance according to one of the preceding claims.
EP08105509.7A 2007-10-31 2008-10-08 Water-guiding household device with a pump with a valve function Active EP2055958B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08105509T PL2055958T3 (en) 2007-10-31 2008-10-08 Water-guiding household device with a pump with a valve function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007052082A DE102007052082A1 (en) 2007-10-31 2007-10-31 Water-conducting household appliance with a pump with valve function

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EP2055958A2 true EP2055958A2 (en) 2009-05-06
EP2055958A3 EP2055958A3 (en) 2013-02-27
EP2055958B1 EP2055958B1 (en) 2020-08-05

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Country Status (5)

Country Link
EP (1) EP2055958B1 (en)
CN (1) CN101424029A (en)
DE (1) DE102007052082A1 (en)
ES (1) ES2813907T3 (en)
PL (1) PL2055958T3 (en)

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WO2017153138A1 (en) * 2016-03-08 2017-09-14 BSH Hausgeräte GmbH Laundry-care appliance having a controller
EP3495547A1 (en) * 2017-12-11 2019-06-12 Vestel Elektronik Sanayi ve Ticaret A.S. Pump for a washing machine, washing machine and method
EP3597813A1 (en) * 2018-07-19 2020-01-22 Lg Electronics Inc. Pump for a washing machine

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ITTO20110337A1 (en) * 2011-04-15 2012-10-16 Eltek Spa SAFETY DEVICE AGAINST FLUID LEAKS FOR HOUSEHOLD APPLIANCES
CN105233931B (en) * 2015-10-29 2017-12-01 苏州美生环保科技有限公司 A kind of discharge component on domestic biomass garbage disposer
CN105233964B (en) * 2015-10-29 2018-02-09 苏州美生环保科技有限公司 One kind discharge component
CN107190482A (en) * 2016-02-25 2017-09-22 赵永潮 A kind of improved washing machine draining pump
CN108209824B (en) * 2018-03-16 2020-10-30 佛山市海汇洗涤技术服务有限公司 Dish washer pipeline connection structure and dish washer

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GB876839A (en) 1959-07-27 1961-09-06 Gen Motors Corp Improvements in dishwashing machines
EP1767788A1 (en) 2005-09-23 2007-03-28 Coprecitec, S.L. Drain pump for home appliances

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017153138A1 (en) * 2016-03-08 2017-09-14 BSH Hausgeräte GmbH Laundry-care appliance having a controller
EP3495547A1 (en) * 2017-12-11 2019-06-12 Vestel Elektronik Sanayi ve Ticaret A.S. Pump for a washing machine, washing machine and method
EP3597813A1 (en) * 2018-07-19 2020-01-22 Lg Electronics Inc. Pump for a washing machine
US11377778B2 (en) 2018-07-19 2022-07-05 Lg Electronics Inc. Washing machine

Also Published As

Publication number Publication date
CN101424029A (en) 2009-05-06
PL2055958T3 (en) 2021-04-06
DE102007052082A1 (en) 2009-05-07
EP2055958A3 (en) 2013-02-27
EP2055958B1 (en) 2020-08-05
ES2813907T3 (en) 2021-03-25

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