EP1216646B1 - Dishwasher and method of operating a dishwasher - Google Patents

Dishwasher and method of operating a dishwasher Download PDF

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Publication number
EP1216646B1
EP1216646B1 EP01127263A EP01127263A EP1216646B1 EP 1216646 B1 EP1216646 B1 EP 1216646B1 EP 01127263 A EP01127263 A EP 01127263A EP 01127263 A EP01127263 A EP 01127263A EP 1216646 B1 EP1216646 B1 EP 1216646B1
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EP
European Patent Office
Prior art keywords
pump
receiving container
dishwashing machine
rinsing liquid
rinsing
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
EP01127263A
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German (de)
French (fr)
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EP1216646A1 (en
Inventor
Bernd Schessl
Michael Rosenbauer
Helmut Jerg
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1216646A1 publication Critical patent/EP1216646A1/en
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Classifications

    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • A47L15/0084—Washing or rinsing machines for crockery or tableware of drawer-type
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays
    • 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
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/26—Loading door status, e.g. door latch opened or closed state
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/34—Other automatic detections
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/01—Water supply, e.g. opening or closure of the water inlet valve
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/03—Water recirculation, e.g. control of distributing valves for redirection of water flow
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction

Definitions

  • the invention relates to a method for operating a dishwasher according to the preamble of claim 1 and a dishwasher according to the preamble of claim 8.
  • a dishwashing machine in which in the housing of the dishwasher two superimposed and pulled out of the housing, the same size receptacle are provided with trough-like washrooms.
  • the invention has for its object to make the user of a dishwasher clogging of the spray openings easily recognizable.
  • the solution of the problem is achieved in a method for operating a dishwasher according to the invention in that even with the receptacle pulled out the pump can be turned on and flushing liquid can be supplied, but at the same time the flow rate of the washing liquid through the spray holes is reduced so far that no cumshot Rinsing fluid from the open washroom outwards into the free environment.
  • the user of a dishwashing machine can thus observe the spraying device when the receptacle is pulled out and can detect whether flushing liquid emerges from all the spraying openings or determine whether a different amount of flushing liquid emerges at different spraying openings. This is a sign that at least a partial obstruction of the respective There is spray openings.
  • the user can then specifically purify the respective spray openings, so that again a perfect flow of the rinsing liquid is ensured by the spray openings.
  • the invention it has been possible to make the user of a dishwasher clogging of the spray openings easily recognizable.
  • a simple way to reduce the flow rate is that, depending on the open position of the receptacle, a reduction in the pump speed, so that their capacity is reduced so much that no clogging of flushing liquid enters the free environment.
  • the electrical control circuit of the pump so as to reduce their flow rate. It can be switched back first to a certain minimum capacity.
  • a control circuit arranged in the pump manually adjustable control member, for example a potentiometer, to regulate a suitable for the review of the pump output.
  • a reduction in the flow rate can also be achieved by activating at least one throttle element which reduces the flow rate and is arranged in the supply line from the pump to the spray unit, depending on the open position of the receiving container.
  • the pump can be operated at normal power and the throttle body provides for the reduction of the flow rate. It may again be advantageous that the flow rate of the throttle body is adjustable.
  • a pressure reducing valve can be used as a throttle body. It is also possible to provide a throttle element as an orifice element whose aperture is adjusted by means of a driven depending on the open position of the receptacle drive member in the direction of reduced transmissibility or to use a controlled in two-stroke valve, the two-stroke control function of the open position of the receptacle in Gear is set.
  • a control element is provided is, by the withdrawn receptacle directly or indirectly both the pump is switched on and the supply of rinsing liquid is releasable, further comprising a the open position of the receptacle detecting sensor is provided, triggered by the throttling of the flow rate of rinsing liquid through the spray openings with the receptacle pulled out is.
  • a test program can be activated by the pump turned on and the supply of rinsing liquid is released even when pulled out the receptacle.
  • the flow rate at the spray openings is reduced by the sensor detecting the open position of the receptacle. This is a check of the permeability of the spray holes possible without the risk of leakage of rinsing fluid from the washing.
  • the sensor can be turned on in response to the actuation of the control program activating the test program.
  • the electrical control circuit of the pump is influenced by a control signal of the sensor in the sense of a reduction in the delivery rate of the pump.
  • the pump can be shut down so far in their speed and thus in their capacity that no clogging of rinsing liquid from the washing out to the outside.
  • Another possibility for reducing the flow rate is that in the supply line from the pump to the spray device in its flow rate is regulated by a control signal of the sensor adjustable throttle body.
  • a throttling device can advantageously be provided a pressure reducing valve or an orifice element whose aperture is adjustable by a control signal of the sensor in the sense of reducing the flow rate. If such throttling devices are used, then the pump can also be operated at its normal capacity while carrying out a check on the permeability of the spray orifices.
  • a dishwasher which, in the exemplary embodiment shown, has a pull-out receptacle 2 with a trough-shaped flushing space 3.
  • a spraying device 4 is mounted, which has spray arms 6 provided with spray openings 5.
  • the spray arms 6 are rotatably arranged in the embodiment shown.
  • the spray arms 6 is supplied via a connected to the pump outlet 9 supply pipe 10 rinsing liquid.
  • the rinsing liquid then exits via the spray openings 5 and is sprayed onto the dishes to be cleaned placed in the rinsing chamber 3.
  • an adjustable throttle body 12 is arranged in the illustrated embodiment.
  • the throttle member 12 is controlled by one of the open position of the receptacle 2 detecting sensor 13 outgoing control signal in such a way that is supplied by this only in the open position of the receptacle 2 from the sensor 13 control signal, the throttle body 12 to minimum flow.
  • a control element 14 e.g. a button, provided by the actuation of both the electric motor 7 is turned on and a arranged in the course of the inflow line 11 valve 15 can be unlocked.
  • the promotion of rinsing liquid can be initiated. If the receptacle 2 is then withdrawn at the same time, the flow rate of flushing liquid through the spray openings 5 is reduced by the sensor 13 to such an extent that no strong jet occurs at the spray openings 5 and could escape from the flushing space 3.
  • the user of the dishwasher can therefore, with the receptacle 2 pulled out, without the risk of being wet-sprayed, the observe individual spray openings 5 and check their perfect permeability. If a lack of permeability is detected then the respective spray openings 5 can be cleaned in a targeted manner.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The method is for operating a pull-out drum dish washer (1) with a flushing chamber fed with fluid from a pump (8). When the drum (2) is extracted, the seatings allow the pump to be disconnected and fluid fed. Simultaneously, the through flow fluid mixture flow through the spray openings is reduced to prevent release of spray into the surroundings.

Description

Die Erfindung betrifft ein Verfahren zum Betrieb einer Geschirrspülmaschine gemäß dem Oberbegriff des Anspruches 1 und eine Geschirrspülmaschine gemäß dem Oberbegriff des Anspruches 8.The invention relates to a method for operating a dishwasher according to the preamble of claim 1 and a dishwasher according to the preamble of claim 8.

Durch die WO 93/12706 A1 ist eine Geschirrspülmaschine bekannt, bei der in dem Gehäuse der Geschirrspülmaschine zwei übereinander angeordnete und aus dem Gehäuse herausziehbare, gleich große Aufnahmebehälter mit wannenartigen Spülräumen vorgesehen sind.By the WO 93/12706 A1 a dishwashing machine is known in which in the housing of the dishwasher two superimposed and pulled out of the housing, the same size receptacle are provided with trough-like washrooms.

Bei Geschirrspülmaschinen kommt es immer wieder vor, dass die Sprühöffnungen der Sprüheinrichtung sich im Laufe der Zeit durch Ablagerungen, insbesondere Kalkablagerungen, teilweise oder ganz zusetzen, so dass nicht mehr genügend oder gar keine Spülflüssigkeit mehr durch die Sprühöffnungen hindurchtreten kann. Dies führt zu schlechten Reinigungsergebnissen. Derartige Verstopfungen der Sprühöffnungen sind für den Benutzer der Geschirrspülmaschine kaum oder gar nicht erkennbar, so dass auch keine Abhilfe vorgenommen werden kann.In dishwashers it happens again and again that the spray openings of the spraying over time by deposits, especially limescale, partially or completely enforce, so that no longer sufficient or no rinsing liquid can pass through the spray holes. This leads to poor cleaning results. Such blockages of the spray openings are hardly or not recognizable to the user of the dishwasher, so that no remedy can be made.

Der Erfindung liegt die Aufgabe zugrunde, für den Benutzer einer Geschirrspülmaschine Verstopfungen der Sprühöffnungen leicht erkennbar zu machen.The invention has for its object to make the user of a dishwasher clogging of the spray openings easily recognizable.

Die Lösung der gestellten Aufgabe gelingt bei einem Verfahren zum Betrieb einer Geschirrspülmaschine nach der Erfindung dadurch, dass auch bei herausgezogenem Aufnahmebehälter die Pumpe eingeschaltet und Spülflüssigkeit zugeführt werden kann, wobei jedoch gleichzeitig die Durchflussmenge der Spülflüssigkeit durch die Sprühöffnungen soweit reduziert wird, dass kein Abspritzen von Spülflüssigkeit aus dem offenen Spülraum nach außen in die freie Umgebung erfolgt. Der Benutzer einer Geschirrspülmaschine kann somit bei herausgezogenem Aufnahmebehälter die Sprüheinrichtung beobachten und erkennen, ob an allen Sprühöffnungen Spülflüssigkeit austritt, bzw. feststellen ob an verschiedenen Sprühöffnungen eine unterschiedliche Menge an Spülflüssigkeit austritt. Dies ist ein Zeichen dafür, dass zumindest eine teilweise Verstopfung der jeweiligen Sprühöffnungen vorliegt. Der Benutzer kann dann gezielt die betreffenden Sprühöffnungen reinigen, so dass wieder ein einwandfreier Durchfluss der Spülflüssigkeit durch die Sprühöffnungen gewährleistet ist. Mit der Erfindung ist es gelungen, für den Benutzer einer Geschirrspülmaschine Verstopfungen der Sprühöffnungen leicht erkennbar zu machen.The solution of the problem is achieved in a method for operating a dishwasher according to the invention in that even with the receptacle pulled out the pump can be turned on and flushing liquid can be supplied, but at the same time the flow rate of the washing liquid through the spray holes is reduced so far that no cumshot Rinsing fluid from the open washroom outwards into the free environment. The user of a dishwashing machine can thus observe the spraying device when the receptacle is pulled out and can detect whether flushing liquid emerges from all the spraying openings or determine whether a different amount of flushing liquid emerges at different spraying openings. This is a sign that at least a partial obstruction of the respective There is spray openings. The user can then specifically purify the respective spray openings, so that again a perfect flow of the rinsing liquid is ensured by the spray openings. With the invention, it has been possible to make the user of a dishwasher clogging of the spray openings easily recognizable.

Eine einfache Möglichkeit zum Reduzieren der Durchflussmenge besteht darin, dass in Abhängigkeit von der Offenstellung des Aufnahmebehälters eine Absenkung der Pumpendrehzahl erfolgt, so dass deren Förderleistung soweit reduziert wird, dass kein Abspritzen von Spülflüssigkeit in die freie Umgebung eintritt. In Abhängigkeit von der Offenstellung des Aufnahmebehälters kann auf den elektrischen Steuerkreis der Pumpe eingewirkt werden, um so deren Förderleistung zu vermindern. Dabei kann zunächst auf eine bestimmte Mindestförderleistung zurückgeschaltet werden. Es besteht dann die Möglichkeit mittels eines im Steuerkreis der Pumpe angeordneten, von Hand verstellbaren Steuergliedes, beispielweise eines Potentiometers, eine für die Überprüfung geeignete Förderleistung der Pumpe einzuregulieren.A simple way to reduce the flow rate is that, depending on the open position of the receptacle, a reduction in the pump speed, so that their capacity is reduced so much that no clogging of flushing liquid enters the free environment. Depending on the open position of the receptacle can be acted upon the electrical control circuit of the pump so as to reduce their flow rate. It can be switched back first to a certain minimum capacity. There is then the possibility by means of a control circuit arranged in the pump, manually adjustable control member, for example a potentiometer, to regulate a suitable for the review of the pump output.

Eine Reduzierung der Durchflussmenge kann auch dadurch erreicht werden, dass in Abhängigkeit von der Offenstellung des Aufnahmebehälters mindestens ein in der Zuleitung von der Pumpe zu der Sprüheinheit angeordnetes, die Durchflussmenge reduzierendes Drosselorgan aktiviert wird. In diesem Falle kann die Pumpe mit normaler Leistung betrieben werden und das Drosselorgan sorgt für die Minderung der Durchflussmenge. Dabei kann es wiederum von Vorteil sein, dass die Durchflussmenge des Drosselorganes regulierbar ist.A reduction in the flow rate can also be achieved by activating at least one throttle element which reduces the flow rate and is arranged in the supply line from the pump to the spray unit, depending on the open position of the receiving container. In this case, the pump can be operated at normal power and the throttle body provides for the reduction of the flow rate. It may again be advantageous that the flow rate of the throttle body is adjustable.

Als Drosselorgan kann ein Druckminderungsventil zum Einsatz kommen. Es besteht auch die Möglichkeit als Drosselorgan ein Blendenelement vorzusehen, dessen Blendenöffnung mittels eines in Abhängigkeit von der Offenstellung des Aufnahmebehälters angesteuerten Antriebsgliedes in Richtung verminderter Durchlassfähigkeit verstellt wird oder ein im Zweitaktverfahren gesteuertes Ventil zu verwenden, wobei die Zweitaktsteuerung in Abhängigkeit von der Offenstellung des Aufnahmebehälters in Gang gesetzt wird.As a throttle body, a pressure reducing valve can be used. It is also possible to provide a throttle element as an orifice element whose aperture is adjusted by means of a driven depending on the open position of the receptacle drive member in the direction of reduced transmissibility or to use a controlled in two-stroke valve, the two-stroke control function of the open position of the receptacle in Gear is set.

Die eingangs genannte Aufgabe wird bei einer nach dem vorbeschriebenen Verfahren betreibbaren Geschirrspülmaschine dadurch gelöst, dass ein Steuerelement vorgesehen ist, durch das bei herausgezogenem Aufnahmebehälter direkt oder indirekt sowohl die Pumpe einschaltbar als auch die Zufuhr von Spülflüssigkeit freigebbar ist, dass ferner ein die Offenstellung des Aufnahmebehälters erfassender Sensor vorhanden ist, durch den eine Drosselung der Durchflussmenge von Spülflüssigkeit durch die Sprühöffnungen bei herausgezogenem Aufnahmebehälter ausgelöst ist. Mittels des Steuerelementes kann ein Prüfprogramm aktiviert werden, durch das auch bei herausgezogenem Aufnahmebehälter die Pumpe eingeschaltet und die Zufuhr von Spülflüssigkeit freigegeben wird. Gleichzeitig wird durch den die Offenstellung des Aufnahmebehälters erfassenden Sensor die Durchflussmenge an den Sprühöffnungen reduziert. Damit ist ohne die Gefahr des Austretens von Spülflüssigkeit aus dem Spülraum eine Überprüfung der Durchlässigkeit der Sprühöffnungen möglich.The object mentioned in the introduction is achieved in a dishwashing machine which can be operated according to the above-described method in that a control element is provided is, by the withdrawn receptacle directly or indirectly both the pump is switched on and the supply of rinsing liquid is releasable, further comprising a the open position of the receptacle detecting sensor is provided, triggered by the throttling of the flow rate of rinsing liquid through the spray openings with the receptacle pulled out is. By means of the control, a test program can be activated by the pump turned on and the supply of rinsing liquid is released even when pulled out the receptacle. At the same time, the flow rate at the spray openings is reduced by the sensor detecting the open position of the receptacle. This is a check of the permeability of the spray holes possible without the risk of leakage of rinsing fluid from the washing.

Der Sensor kann in Abhängigkeit vom Betätigen des das Prüfprogramm aktivierenden Steuerelementes eingeschaltet werden.The sensor can be turned on in response to the actuation of the control program activating the test program.

Zweckmäßig ist es, wenn durch ein Steuersignal des Sensors der elektrische Steuerkreis der Pumpe im Sinne einer Verminderung der Förderleistung der Pumpe beeinflusst ist. Über ihren elektrischen Steuerkreis kann die Pumpe in ihrer Drehzahl und damit in ihrer Förderleistung soweit heruntergefahren werden, dass kein Abspritzen von Spülflüssigkeit aus dem Spülraum heraus nach außen erfolgt.It is expedient if the electrical control circuit of the pump is influenced by a control signal of the sensor in the sense of a reduction in the delivery rate of the pump. About their electrical control circuit, the pump can be shut down so far in their speed and thus in their capacity that no clogging of rinsing liquid from the washing out to the outside.

Eine weitere Möglichkeit zum Reduzieren der Durchflussmenge besteht darin, dass in der Zuleitung von der Pumpe zu der Sprüheinrichtung ein in seiner Durchflussmenge durch ein Steuersignal des Sensors regulierbares Drosselorgan angeordnet ist.Another possibility for reducing the flow rate is that in the supply line from the pump to the spray device in its flow rate is regulated by a control signal of the sensor adjustable throttle body.

Als Drosselorgan kann vorteilhafterweise ein Druckminderungsventil oder ein Blendenelement vorgesehen sein, dessen Blendenöffnung durch ein Steuersignal des Sensors im Sinne einer Verminderung der Durchflussmenge verstellbar ist. Werden solche Drosselorgane verwendet, dann kann die Pumpe auch während der Durchführung einer Überprüfung der Durchlässigkeit der Sprühöffnungen mit ihrer normalen Leistung betrieben werden.As a throttling device can advantageously be provided a pressure reducing valve or an orifice element whose aperture is adjustable by a control signal of the sensor in the sense of reducing the flow rate. If such throttling devices are used, then the pump can also be operated at its normal capacity while carrying out a check on the permeability of the spray orifices.

Anhand eines in der Zeichnung in schematischer Form dargestellten Ausführungsbeispieles wird die Erfindung nachfolgend noch näher erläutert.Reference to an embodiment shown in schematic form in the drawing, the invention will be explained in more detail below.

Mit 1 ist eine Geschirrspülmaschine bezeichnet, die im gezeigten Ausführungsbeispiel einen herausziehbaren Aufnahmebehälter 2 mit einem wannenförmigen Spülraum 3 aufweist. In dem Spülraum 3 ist eine Sprüheinrichtung 4 angebracht, die mit Sprühöffnungen 5 versehene Sprüharme 6 besitzt. Die Sprüharme 6 sind im gezeigten Ausführungsbeispiel drehbar angeordnet. Mittels einer unter dem Aufnahmebehälter 2 eingebauten, durch einen Elektromotor 7 angetriebenen Pumpe 8 wird den Sprüharmen 6 über ein mit dem Pumpenauslass 9 verbundenes Zuleitungsrohr 10 Spülflüssigkeit zugeführt. Die Spülflüssigkeit tritt dann über die Sprühöffnungen 5 aus und wird auf das in dem Spülraum 3 eingebrachte zu reinigende Geschirr gesprüht. Die Zufuhr der Spülflüssigkeit zur Pumpe 8 erfolgt über eine Zuflussleitung 11.1 denotes a dishwasher which, in the exemplary embodiment shown, has a pull-out receptacle 2 with a trough-shaped flushing space 3. In the washing compartment 3, a spraying device 4 is mounted, which has spray arms 6 provided with spray openings 5. The spray arms 6 are rotatably arranged in the embodiment shown. By means of a built-in under the receptacle 2, driven by an electric motor 7 pump 8 the spray arms 6 is supplied via a connected to the pump outlet 9 supply pipe 10 rinsing liquid. The rinsing liquid then exits via the spray openings 5 and is sprayed onto the dishes to be cleaned placed in the rinsing chamber 3. The supply of the rinsing liquid to the pump 8 via an inflow line 11th

Im Zuge des Zuleitungsrohres 10 ist im gezeigten Ausführungsbeispiel ein regulierbares Drosselorgan 12 angeordnet. Das Drosselorgan 12 wird durch ein von einem die Offenstellung des Aufnahmebehälters 2 erfassenden Sensor 13 ausgehendes Steuersignal gesteuert und zwar derart, dass durch dieses nur in der Offenstellung des Aufnahmebehälters 2 von dem Sensor 13 abgegebene Steuersignal das Drosselorgan 12 auf minimale Durchflussmenge zugesteuert wird.In the course of the supply pipe 10, an adjustable throttle body 12 is arranged in the illustrated embodiment. The throttle member 12 is controlled by one of the open position of the receptacle 2 detecting sensor 13 outgoing control signal in such a way that is supplied by this only in the open position of the receptacle 2 from the sensor 13 control signal, the throttle body 12 to minimum flow.

Um bei herausgezogenem Aufnahmebehälter 2 die Überprüfung der Durchlässigkeit der Sprühöffnungen 5 durchführen zu können, ist ein Steuerelement 14, z.B. ein Taster, vorgesehen, durch dessen Betätigung sowohl der Elektromotor 7 eingeschaltet als auch ein im Zuge der Zuflussleitung 11 angeordnetes Ventil 15 freigeschaltet werden kann. Somit ist auch bei herausgezogenem Aufnahmebehälter 2 eine Förderung von Spülflüssigkeit möglich.In order to be able to carry out the checking of the permeability of the spray openings 5 when the receiving container 2 is pulled out, a control element 14, e.g. a button, provided by the actuation of both the electric motor 7 is turned on and a arranged in the course of the inflow line 11 valve 15 can be unlocked. Thus, even with pulled out receptacle 2, a promotion of rinsing liquid is possible.

Durch Betätigen des Steuerelementes 14 kann die Förderung von Spülflüssigkeit eingeleitet werden. Ist dann gleichzeitig der Aufnahmebehälter 2 herausgezogen, wird durch den Sensor 13 die Durchflussmenge von Spülflüssigkeit durch die Sprühöffnungen 5 soweit reduziert, dass an den Sprühöffnungen 5 kein starker Strahl auftritt, der aus dem Spülraum 3 austreten könnte. Der Benutzer der Geschirrspülmaschine kann daher bei herausgezogenem Aufnahmebehälter 2, ohne die Gefahr nassgespritzt zu werden, die einzelnen Sprühöffnungen 5 beobachten und deren einwandfreie Durchlässigkeit überprüfen. Bei festgestellter mangelnder Durchlässigkeit können dann die betreffenden Sprühöffnungen 5 gezielt gereinigt werden.By pressing the control element 14, the promotion of rinsing liquid can be initiated. If the receptacle 2 is then withdrawn at the same time, the flow rate of flushing liquid through the spray openings 5 is reduced by the sensor 13 to such an extent that no strong jet occurs at the spray openings 5 and could escape from the flushing space 3. The user of the dishwasher can therefore, with the receptacle 2 pulled out, without the risk of being wet-sprayed, the observe individual spray openings 5 and check their perfect permeability. If a lack of permeability is detected then the respective spray openings 5 can be cleaned in a targeted manner.

Mit der Erfindung ist es gelungen, für den Benutzer einer Geschirrspülmaschine 1 Verstopfungen der Sprühöffnungen 5 leicht erkennbar zu machen.With the invention, it has been possible for the user of a dishwasher 1 to make blockages of the spray openings 5 easily recognizable.

Claims (13)

  1. Method of operating a dishwashing machine which has at least one withdrawable receiving container (2) with a rinsing chamber (3), wherein the dishwashing machine (1) has in the rinsing chamber (3) of its at least one withdrawable receiving container (2) at least one spray equipment (4), which is supplied with rinsing liquid by a pump (8) and is provided with spray openings (5) through which the rinsing liquid is sprayed into the rinsing chamber (3), characterised in that the pump (8) can be switched on and rinsing liquid fed even when the receiving container is pulled out, wherein, however, at the same time the throughflow quantity of the rinsing liquid through the spray openings (5) is reduced to such an extent that no spraying of rinsing liquid outwardly through the open rinsing chamber (3) into the free environment takes place.
  2. Method according to claim 1, characterised in that a reduction in the pump rotational speed is carried out in dependence on the open setting of the receiving container (2) so that the conveying performance of the pump is reduced to such an extent that no spraying of rinsing liquid enters into the free environment.
  3. Method according to claim 1, characterised in that at least one throttle element (12) arranged in the feed duct (10) from the pump the spray equipment (4) and reducing the throughflow quantity is activated in dependence on the open setting of the receiving container (2).
  4. Method according to claim 3, characterised in that the throughflow quantity of the throttle element (12) can be regulated.
  5. Method according to claim 3 or 4, characterised in that a pressure reducing valve is used as throttle element (12).
  6. Method according to claim 3 or 4, characterised in that an aperture element, the aperture opening of which is adjusted by means of a drive element controlled in drive in dependence on the open setting of the receiving container (2) in the direction of reduced pass capability, is provided as throttle element (12).
  7. Method according to claim 3 or 4, characterised in that a valve controlled in two-cycle process is used as throttle element (12), wherein the two-cycle control is set in motion in dependence on the open setting of the receiving container.
  8. Dishwashing machine (1) which has at least one withdrawable receiving container (2) with a rinsing chamber (3), wherein the dishwashing machine (1) has in the rinsing chamber (3) of its at least one withdrawable receiving container (2), at least one spray equipment (4), which is supplied with rinsing liquid by a pump (8) and provided with spray openings (5) through which the rinsing liquid can be sprayed into the rinsing chamber (3), characterised in that the dishwashing machine (1) is operable according to the method of one of claims 1 to 7, that a control element (14) is provided, by which, when the receiving container (2) is pulled out, directly or indirectly not only the pump (8) can be switched on, but also the feed of rinsing liquid can be freed, and that in addition a sensor (13) detecting the open setting of the receiving container (2) is present, by which a throttling of the throughflow quantity of rinsing liquid through the spray openings (5) when the receiving container (2) is pulled out is triggered.
  9. Dishwashing machine according to claim 8, characterised in that the sensor (13) is activated in dependence on the actuation of the control element (14).
  10. Dishwashing machine according to claim 8 or 9, characterised in that the electrical control circuit of the pump (8) is influenced by a control signal in the sense of a reduction in the conveying performance of the pump (8).
  11. Dishwashing machine according to claim 8 or 9, characterised in that a throttle element (12) able to be regulated in its throughflow quantity by a control signal of the sensor (13) is arranged in the feed duct (10) from the pump (8) to the spray equipment (4).
  12. Dishwashing machine according to claim 11, characterised in that the throttle element (12) is a pressure reducing valve.
  13. Dishwashing machine according to claim 11, characterised in that an aperture element, the aperture opening of which is adjustable by a control signal of the sensor (13) in the sense of a reduction of the throughflow quantity, is provided as throttle element (12).
EP01127263A 2000-12-21 2001-11-16 Dishwasher and method of operating a dishwasher Expired - Lifetime EP1216646B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10064121A DE10064121A1 (en) 2000-12-21 2000-12-21 Method for operating a dishwasher and dishwasher
DE10064121 2000-12-21

Publications (2)

Publication Number Publication Date
EP1216646A1 EP1216646A1 (en) 2002-06-26
EP1216646B1 true EP1216646B1 (en) 2008-01-23

Family

ID=7668347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127263A Expired - Lifetime EP1216646B1 (en) 2000-12-21 2001-11-16 Dishwasher and method of operating a dishwasher

Country Status (4)

Country Link
EP (1) EP1216646B1 (en)
AT (1) ATE384469T1 (en)
DE (2) DE10064121A1 (en)
ES (1) ES2299462T3 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2529021C2 (en) * 1974-07-11 1983-05-11 Euro Hausgeräte GmbH, 6680 Neunkirchen Dishwasher with adjustable rinsing liquor flow for at least two spray devices
KR100239936B1 (en) * 1991-12-20 2000-03-02 윌리엄 린드세이 길랜더즈 Dishwasher
JPH05176874A (en) * 1991-12-27 1993-07-20 Hoshizaki Electric Co Ltd Controller for dish washer
DE4404369C2 (en) * 1994-02-11 1997-04-30 Miele & Cie Inlet valve for the spray arm of a dishwasher
JPH10165913A (en) * 1996-12-13 1998-06-23 Sanyo Electric Co Ltd Spray type cleaner
DE19732856C2 (en) * 1997-07-30 2000-05-18 Bht Hygiene Technik Ing H Bier Cleaning machine and monitoring method

Also Published As

Publication number Publication date
DE10064121A1 (en) 2002-06-27
ATE384469T1 (en) 2008-02-15
ES2299462T3 (en) 2008-06-01
EP1216646A1 (en) 2002-06-26
DE50113532D1 (en) 2008-03-13

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