WO2009077283A1 - Water-bearing domestic appliance - Google Patents
Water-bearing domestic appliance Download PDFInfo
- Publication number
- WO2009077283A1 WO2009077283A1 PCT/EP2008/065880 EP2008065880W WO2009077283A1 WO 2009077283 A1 WO2009077283 A1 WO 2009077283A1 EP 2008065880 W EP2008065880 W EP 2008065880W WO 2009077283 A1 WO2009077283 A1 WO 2009077283A1
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- WO
- WIPO (PCT)
- Prior art keywords
- water
- household appliance
- conducting
- self
- liquid
- 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.)
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/10—Filtering arrangements
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4202—Water filter means or strainers
- A47L15/4206—Tubular filters
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4202—Water filter means or strainers
- A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
Definitions
- the invention relates to a water-conducting household appliance according to the preamble of claim 1.
- a filter system is used, which may include a coarse filter, a fine sieve and a micro sieve.
- the coarse screen is used to retain dirt particles that can lead to a blockage of the drain pump.
- a fine sieve particles with a particle size greater than approx. 1 mm are retained and with a micro sieve particles with a particle size greater than approx. 0.15 mm are retained.
- a water-conducting household appliance such. a dishwasher has a drain pump, with the at the end of a rinse dirty rinse liquor from the
- Dishwasher can be promoted out in a home-based wastewater disposal system.
- Such lye pumps are designed so that they can promote larger particle sizes unhindered and there is no blockage of the drain pump. Therefore, lye pumps are arranged in such a way that polluted rinsing liquor is only roughly filtered during pumping.
- a dishwasher has a circulation pump with which rinsing liquor can be circulated during a cleaning operation, ie, in the sump of a dishwasher collecting liquid is supplied by the circulation pump by a hydraulic system in the interior of the Spül organizations arranged spray arms, with which a uniform loading of the dishes with Rinsing carried out.
- the spray arms have relatively small openings, so it is necessary to guide the circulated rinsing liquor through the fine and micro sieve so that even the smallest particles are retained and can not clog the outlet openings of the spray arms.
- the circulation pump is designed with respect to the particle size tolerance.
- the invention relates to a water-conducting household appliance, in particular a dishwasher or washing machine, at least having a temporarily closed Spülflotten Vietnameselauf in which by means of a circulating pump rinsing liquor is recirculated.
- the solution according to the invention is characterized in that in the closed Spülflotten Vietnameselauf a positive flow-through self-cleaning filter system is provided with at least one filter element designed as a microfilter. This ensures that the microfilter retains particles with a particle size of 0.8 to 0.15 mm with appropriate design and thus a remindanschmutzung dishes is reliably prevented.
- a closed Spülflotten Vietnameselauf is understood that in a program section cleaning a water-bearing household appliance, a certain amount of washing liquor is circulated in the household appliance and several times to be cleaned, such as items to be supplied. It is ensured by the forced flow of the filter element that no particles are circulated, the dimensions of which is greater than the filter width of the filter element.
- a fine and / or coarse sieve is arranged in the closed rinsing liquor cycle so that particles with a particle size of> 1, 1 mm and through the fine sieve particles with a particle size of 1, 1 mm to 0 through the fine sieve, 8 mm and do not burden the forced flow microfilter. If necessary, for example, after the occurrence of abnormal pollution loads that overwhelm the self-cleaning filter system, it can be provided that the self-cleaning filter system in a receptacle of the water-bearing household appliance releasably, in particular without tools is detachable arranged.
- the self-cleaning filter system having a handle that allows to remove the self-cleaning filter system from the recording of water-conducting household appliance, the recording in the case of a dishwasher can be arranged in a washing compartment of the dishwasher and so the removal of the self-cleaning filter system with the door open the dishwasher allowed.
- the self-cleaning filter system has at least one liquid-carrying inlet connection coupling and a liquid-carrying outlet connection coupling, which with liquid-carrying
- the self-cleaning filter system When the self-cleaning filter system is reinserted into the receptacle, it ensures that an inlet and outlet connection is automatically established by the self-cleaning filter system with the water-conducting household appliance.
- liquid-conducting inlet connection coupling and the liquid-conducting outlet connection coupling of the water-conducting household appliance are designed such that the water-conducting domestic appliance is functional even without inserted self-cleaning filter system in the recording, so that it is possible for a non-functional self-cleaning filter system by removing the not functional self-cleaning filter system to allow limited operation of the water-conducting household appliance.
- the self-cleaning filter system preferably has a fluid-conducting connection with a drain of the water-conducting domestic appliance.
- the flow of the water-conducting household appliance establishes a connection with a house-side wastewater disposal system, through the rinsing liquor at the end of a cleaning program in the house-side sanitation system under Use of a drain pump can be promoted.
- the liquid-conducting connection with the sequence allows particles which were retained by the filter element designed as a microfilter to be removed from the self-cleaning filter system during a rinse cycle, so that a filter element free of covering material is available again at the beginning of a new rinse cycle.
- the liquid-conducting connection is arranged with a drain such that when pumping rinsing a drainage of the self-cleaning filter system of trapped with particles retained rinsing is automatically ensured, in particular by the occurrence of a gravitational flow.
- the flow direction of the gravity-induced flow when pumping in the self-cleaning filter system is at least partially opposite to the flow direction prevailing in the cleaning operation, is circulated in the wash liquor in a closed Spülflotten Vietnamesesburg.
- the self-cleaning filter system has a liquid-carrying emptying connection coupling, which can be coupled with liquid-carrying emptying couplings of the water-conducting household appliance.
- the emptying coupling of the water-conducting household appliance may be designed accordingly that an operation of the water-conducting household appliance is possible if no self-cleaning filter system is used in the recording of the water-conducting household appliance.
- a valve may be provided in the liquid-conducting connection, with which the liquid-conducting connection can be opened or closed.
- an actuating element for the valve may be provided in the form of an actuator.
- the self-cleaning filter system has a fixedly arranged filter element.
- a self-cleaning filter system may be used in which the filter element is arranged to be movable, for example rotating.
- a motor may be provided which is in operative connection is with the rotatable filter element and allows to put the filter element for cleaning purposes in rotation, so that a filter element clogging filter pad can be thrown off by centrifugal forces.
- the self-cleaning filter system with a fixedly arranged filter element preferably has at least one nozzle which is arranged such that, during operation, a liquid flow keeps the filter element free of deposits.
- Nozzles arranged such that on the freestanding filter element a a
- Edge of a fixed filter element collects or is conveyed beyond the edge and can be mitabgepumped after completion of a cleaning process, during the subsequent pumping out of the dirty rinse liquor.
- the self-cleaning filter system may preferably have cleaning bodies for cleaning the filter element, which can be set in motion by the at least one nozzle.
- this structure with improved cleaning of the filter element has a particularly simple structure, since no drive is necessary to move the cleaning body during operation in motion, but this is effected by the introduced by means of the nozzle flow.
- the invention includes a self-cleaning filter system for a water-conducting household appliance, in particular a dishwasher or washing machine.
- Fig. 1 is a schematic representation of a portion of a water-conducting household appliance according to the invention.
- Such a dishwashing machine has a circulation pump (not shown) with which flushing liquor collecting in the bottom area 16 can be sucked in so as to be supplied through lines (not shown) to flushing devices arranged inside the washing tub, such as rotatable spraying arms (not shown), with which to be cleaned items to be washed with rinse liquor.
- a drain 12 is provided, which is connected in liquid communication with a drain pump (not shown) which establishes a connection with the house-side wastewater disposal system.
- the bottom portion 16 of the dishwasher 2 also has a sump 18, in which the rinsing liquor from the items to be washed can collect, to be then circulated by the circulation pump during cleaning operation of the dishwasher, at the rinsing liquor or during emptying operation, in which the rinsing liquor with the Lye pump is conveyed out of the dishwasher 2, can be sucked.
- the sump 18 is covered with a fine and / or coarse filter 14, the coarse filter e.g. Toothpicks, bones, etc. retains and thus prevents the drain pump damage or blocked, while the fine filter particles ⁇ 1, 1 mm holds back.
- the fine and / or coarse filter 14 is arranged detachably above the sump 18 and can be removed without tools if necessary by an operator to make a cleaning.
- rinsing fluid flows from the circulation pump into a self-cleaning filter system 4 and then on to a distributor (not shown), such as a water diverter which allows it, for example an upper or lower spray arm to supply specifically with rinsing water, so as to apply in a desired manner items to be washed in a dish rack with rinsing liquor.
- the self-cleaning filter system 4 has a filter element 6 designed as a microfilter, with which particles with a particle size of 0.8 to 0.15 mm can be retained due to its mesh size.
- the filter element 6 is disc-shaped and stationary, ie arranged immovable.
- a plurality of disk-shaped filters may be provided which form a filter element 6.
- the supply of rinsing liquid to be filtered takes place by means of nozzles 16 which are arranged such that they produce a direction of rotation having flow, so that can form on the filter elements no coating, but from the Filter element 6 retained particles are carried by the centrifugal force to the edge of the annular filter elements 6 and there leave the surface of the annular filter elements 6.
- cleaning body 20 which are rotatably arranged and are in contact with the surface of the filter element 6.
- Cleaning bodies 20 are arranged with respect to the nozzles 16 such that a flow exiting from the nozzles 16 causes the cleaning bodies 20 to rotate and thus causes the filter elements to be kept free of a deposit.
- the cleaning body may be arranged resiliently biased, so as to ensure that the cleaning body permanent contact with the filter elements
- an Abpumpvorgang follows, in which the soiled wash liquor is conveyed through the drain 12 by means of a drain pump in a house-side sewage disposal system. Flushing liquor which has remained in the self-cleaning filter and that of the filter elements 6 flows retained particles through the liquid-conducting connection 10, which establishes a connection with the sump 18 and thus with the drain 12, so that at the beginning of a new rinse a completely purified self-cleaning filter system 4 is available.
- the self-cleaning filter system 4 can be removed without tools, for example by means of a handle 22.
- the dishwasher 2 has a receptacle 24 which is provided with couplings for flushing liquor flowing into the self-cleaning filter 4 and flushing liquor flowing out of the filter 4 and with a third coupling for establishing a connection with the liquid-conducting connection 10, which connects to the Swamp 18 and the drain 12 manufactures.
- These couplings are designed so that they automatically and without tools produce a liquid-conducting connection with corresponding couplings of the self-cleaning filter 4.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
Description
Wasserführendes Haushaltsgerät Water-conducting household appliance
Die Erfindung betrifft ein wasserführendes Haushaltsgerät nach dem Oberbegriff des Anspruchs 1.The invention relates to a water-conducting household appliance according to the preamble of claim 1.
Um bei wasserführenden Haushaltsgeräten, wie beispielsweise Geschirrspülmaschinen zu verhindern, dass das Leitungssystem, in dem Spülflotte umgewälzt wird, durch Schmutzpartikel verschmutzt wird, wird ein Filtersystem eingesetzt, das ein Grobsieb, ein Feinsieb und ein Mikrosieb umfassen kann. Dabei dient das Grobsieb dazu, Schmutzpartikel zurückzuhalten, die zu einer Blockade der Laugenpumpe führen können. Mit einem Feinsieb werden Partikel mit einer Partikelgröße größer ca. 1 mm und mit einem Mikrosieb werden Partikel mit einer Partikelgröße größer ca. 0,15 mm zurückgehalten.In order to prevent water in household appliances, such as dishwashers, that the conduit system is circulated in the wash liquor is polluted by dirt particles, a filter system is used, which may include a coarse filter, a fine sieve and a micro sieve. The coarse screen is used to retain dirt particles that can lead to a blockage of the drain pump. With a fine sieve, particles with a particle size greater than approx. 1 mm are retained and with a micro sieve particles with a particle size greater than approx. 0.15 mm are retained.
Ein wasserführendes Haushaltsgerät wie z.B. eine Geschirrspülmaschine weist eine Laugenpumpe auf, mit der am Ende eines Spülgangs verschmutzte Spülflotte aus demA water-conducting household appliance such. a dishwasher has a drain pump, with the at the end of a rinse dirty rinse liquor from the
Geschirrspüler heraus in ein hausseitiges Abwasserentsorgungssystem gefördert werden kann. Derartige Laugenpumpen sind derart ausgelegt, dass sie größere Partikelgrößen ungehindert fördern können und es zu keiner Blockade der Laugenpumpe kommt. Daher sind Laugenpumpen derart angeordnet, dass verschmutzte Spülflotte bei Abpumpen nur grob gefiltert wird.Dishwasher can be promoted out in a home-based wastewater disposal system. Such lye pumps are designed so that they can promote larger particle sizes unhindered and there is no blockage of the drain pump. Therefore, lye pumps are arranged in such a way that polluted rinsing liquor is only roughly filtered during pumping.
Ferner weist eine Geschirrspülmaschine eine Umwälzpumpe auf, mit der während eines Reinigungsvorgangs Spülflotte umgewälzt werden kann, d.h., sich im Pumpensumpf einer Geschirrspülmaschine sammelnde Flüssigkeit wird mittels der Umwälzpumpe durch ein Hydrauliksystem im Inneren des Spülbehälters angeordneten Sprüharmen zugeführt, mit denen eine gleichmäßige Beaufschlagung des Spülguts mit Spülflotte erfolgt. Die Sprüharme weisen verhältnismäßig kleine Öffnungen auf, sodass es erforderlich ist, die umgewälzte Spülflotte durch das Fein- und Mikrosieb zu führen, damit auch kleinste Partikel zurückgehalten werden und die Austrittsöffnungen der Sprüharme nicht verstopfen können. Entsprechend ist die Umwälzpumpe bezüglich der Partikelgrößentoleranz ausgebildet. Derzeitige Geschirrspülmaschinen sind derart ausgelegt, dass nur das Feinsieb zwangsdurchströmt ist, d.h., wenn infolge einer großen Schmutzfracht das Mikrosieb verstopft sind, wird umgewälzte Spülflotte allein vom Feinsieb gefiltert. Dies hat zur Folge, dass Partikel, die normalerweise vom Mikrosieb zurückgehalten werden, in die Umwälzpumpe gelangen könnten und damit durch die Leitungen und die Sprüharme auf das Spülgut gelangen können und so eine Rückanschmutzung bewirken. Dabei sind das Fein- und/oder Mikrosieb in einer Bypassleitung angeordnet und nicht zwangsdurchströmt.Furthermore, a dishwasher has a circulation pump with which rinsing liquor can be circulated during a cleaning operation, ie, in the sump of a dishwasher collecting liquid is supplied by the circulation pump by a hydraulic system in the interior of the Spülbehälters arranged spray arms, with which a uniform loading of the dishes with Rinsing carried out. The spray arms have relatively small openings, so it is necessary to guide the circulated rinsing liquor through the fine and micro sieve so that even the smallest particles are retained and can not clog the outlet openings of the spray arms. Accordingly, the circulation pump is designed with respect to the particle size tolerance. Current dishwashers are designed in such a way that only the fine sieve is positively flowed through, ie if the micro sieves are blocked as a result of a large amount of dirt, circulated rinsing liquor is filtered solely by the fine sieve. This has the consequence that particles that are normally retained by the microscreen could get into the circulation pump and thus reach the items to be washed through the lines and the spray arms and thus cause back soiling. The fine and / or microsieve are arranged in a bypass line and not forced through.
Es ist Aufgabe der Erfindung, hier Abhilfe zu schaffen.It is an object of the invention to remedy this situation.
Die Erfindung geht aus von einem wasserführenden Haushaltsgerät, insbesondere einer Geschirrspül- oder Waschmaschine, wenigstens aufweisend einen zeitweise geschlossenem Spülflottenkreislauf, in dem mittels einer Umwälzpumpe Spülflotte umwälzbar ist.The invention relates to a water-conducting household appliance, in particular a dishwasher or washing machine, at least having a temporarily closed Spülflottenkreislauf in which by means of a circulating pump rinsing liquor is recirculated.
Die erfindungsgemäße Lösung ist dadurch gekennzeichnet, dass in dem geschlossenen Spülflottenkreislauf ein zwangsdurchströmtes selbstreinigendes Filtersystem mit wenigstens einem als Mikrofilter ausgebildeten Filterelement vorgesehen ist. Somit wird sichergestellt, dass das Mikrofilter bei entsprechender Auslegung Partikel mit einer Partikelgröße von 0,8 bis 0,15 mm zurückhält und somit eine Rückanschmutzung von Geschirr zuverlässig verhindert ist. Dabei wird unter einem geschlossenen Spülflottenkreislauf verstanden, dass in einem Programmabschnitt Reinigen eines wasserführenden Haushaltsgerätes eine bestimmte Menge Spülflotte im Haushaltsgerät umgewälzt wird und mehrfach dem zu reinigenden Gut, wie beispielsweise Spülgut, zugeführt wird. Dabei wird durch die Zwangsdurchströmung des Filterelements sichergestellt, dass keine Partikel mit umgewälzt werden, deren Abmessungen größer als die Filterweite des Filterelements ist.The solution according to the invention is characterized in that in the closed Spülflottenkreislauf a positive flow-through self-cleaning filter system is provided with at least one filter element designed as a microfilter. This ensures that the microfilter retains particles with a particle size of 0.8 to 0.15 mm with appropriate design and thus a Rückanschmutzung dishes is reliably prevented. Here, a closed Spülflottenkreislauf is understood that in a program section cleaning a water-bearing household appliance, a certain amount of washing liquor is circulated in the household appliance and several times to be cleaned, such as items to be supplied. It is ensured by the forced flow of the filter element that no particles are circulated, the dimensions of which is greater than the filter width of the filter element.
Es kann vorzugsweise vorgesehen sein, dass im geschlossenen Spülflottenkreislauf ein Fein- und/oder Grobsieb angeordnet ist, sodass durch das Grobsieb Partikel mit einer Partikelgröße von > 1 ,1 mm und durch das Feinsieb Partikel mit einer Partikelgröße von 1 ,1 mm bis 0,8 mm zurückgehalten werden und nicht das zwangsdurchströmte Mikrofilter belasten. Im Bedarfsfall, beispielsweise nach dem Auftreten außergewöhnlicher Schmutzfrachten, die das selbstreinigende Filtersystem überfordern, kann vorgesehen sein, dass das selbstreinigende Filtersystem in einer Aufnahme des wasserführenden Haushaltsgeräts lösbar, insbesondere werkzeuglos lösbar, angeordnet ist. Hierzu kann das selbstreinigende Filtersystem einen Handgriff aufweisen, der es erlaubt, das selbstreinigende Filtersystem aus der Aufnahme des wasserführenden Haushaltsgeräts zu entnehmen, wobei die Aufnahme im Fall einer Geschirrspülmaschine in einem Spülraum der Geschirrspülmaschine angeordnet sein kann und so die Entnahme des selbstreinigenden Filtersystems bei geöffneter Tür der Geschirrspülmaschine erlaubt.It can preferably be provided that a fine and / or coarse sieve is arranged in the closed rinsing liquor cycle so that particles with a particle size of> 1, 1 mm and through the fine sieve particles with a particle size of 1, 1 mm to 0 through the fine sieve, 8 mm and do not burden the forced flow microfilter. If necessary, for example, after the occurrence of abnormal pollution loads that overwhelm the self-cleaning filter system, it can be provided that the self-cleaning filter system in a receptacle of the water-bearing household appliance releasably, in particular without tools is detachable arranged. For this purpose, the self-cleaning filter system having a handle that allows to remove the self-cleaning filter system from the recording of water-conducting household appliance, the recording in the case of a dishwasher can be arranged in a washing compartment of the dishwasher and so the removal of the self-cleaning filter system with the door open the dishwasher allowed.
Ferner ist vorzugsweise vorgesehen, dass das selbstreinigende Filtersystem wenigstens eine flüssigkeitsführende Einlassanschlusskupplung und eine flüssigkeitsführende Auslassanschlusskupplung aufweist, die mit flüssigkeitsführendenFurthermore, it is preferably provided that the self-cleaning filter system has at least one liquid-carrying inlet connection coupling and a liquid-carrying outlet connection coupling, which with liquid-carrying
Einlassanschlusskupplungen und flüssigkeitsführenden Auslassanschlusskupplungen des wasserführenden Haushaltsgeräts gekoppelt sind und so bei Wiedereinsetzen des selbstreinigenden Filtersystems in die Aufnahme gewährleisten, dass selbsttätig eine Einlass- und Auslassverbindung von dem selbstreinigenden Filtersystem mit dem wasserführenden Haushaltsgerät hergestellt wird.When the self-cleaning filter system is reinserted into the receptacle, it ensures that an inlet and outlet connection is automatically established by the self-cleaning filter system with the water-conducting household appliance.
Insbesondere ist dabei vorgesehen, dass die flüssigkeitsführende Einlassanschlusskupplung und die flüssigkeitsführende Auslassanschlusskupplung des wasserführenden Haushaltsgeräts derart ausgebildet sind, dass das wasserführende Haushaltsgerät auch ohne eingesetztes selbstreinigendes Filtersystem in der Aufnahme funktionsfähig ist, sodass es bei einem nicht funktionsfähigen selbstreinigenden Filtersystem möglich ist, durch Entnahme des nicht funktionsfähigen selbstreinigenden Filtersystems einen eingeschränkten Betrieb des wasserführenden Haushaltsgeräts zu ermöglichen.In particular, it is provided that the liquid-conducting inlet connection coupling and the liquid-conducting outlet connection coupling of the water-conducting household appliance are designed such that the water-conducting domestic appliance is functional even without inserted self-cleaning filter system in the recording, so that it is possible for a non-functional self-cleaning filter system by removing the not functional self-cleaning filter system to allow limited operation of the water-conducting household appliance.
Des Weiteren weist vorzugsweise das selbstreinigende Filtersystem eine flüssigkeitsleitende Verbindung mit einem Ablauf des wasserführenden Haushaltsgeräts auf. Dabei stellt der Ablauf des wasserführenden Haushaltsgeräts eine Verbindung mit einem hausseitigen Abwasserentsorgungssystem her, durch den Spülflotte am Ende eines Reinigungsprogramms in das hausseitige Abwasserentsorgungssystem unter Verwendung einer Laugenpumpe gefördert werden kann. Dabei erlaubt die flüssigkeitsleitende Verbindung mit dem Ablauf, dass Partikel, die von dem als Mikrofilter ausgebildeten Filterelement zurückgehalten wurden, während eines Spülgangs aus dem selbstreinigenden Filtersystem abgeführt werden können, sodass bei Beginn eines neuen Spülgangs wieder ein belagfreies Filterelement zur Verfügung steht.Furthermore, the self-cleaning filter system preferably has a fluid-conducting connection with a drain of the water-conducting domestic appliance. In this case, the flow of the water-conducting household appliance establishes a connection with a house-side wastewater disposal system, through the rinsing liquor at the end of a cleaning program in the house-side sanitation system under Use of a drain pump can be promoted. In this case, the liquid-conducting connection with the sequence allows particles which were retained by the filter element designed as a microfilter to be removed from the self-cleaning filter system during a rinse cycle, so that a filter element free of covering material is available again at the beginning of a new rinse cycle.
Dabei ist vorzugsweise vorgesehen, dass die flüssigkeitsleitende Verbindung mit einem Ablauf derart angeordnet ist, dass bei Abpumpen von Spülflotte eine Entleerung des selbstreinigenden Filtersystems von mit zurückgehaltenen Partikeln versetzter Spülflotte selbsttätig, insbesondere durch Auftreten einer schwerkraftbedingten Strömung, gewährleistet ist. Dabei ist die Strömungsrichtung der schwerkraftbedingten Strömung beim Abpumpen im selbstreinigenden Filtersystem wenigstens abschnittsweise entgegengesetzt zu der Strömungsrichtung, die beim Reinigungsbetrieb herrscht, bei dem Spülflotte in einem geschlossenen Spülflottenkreislauf umgewälzt wird.In this case, it is preferably provided that the liquid-conducting connection is arranged with a drain such that when pumping rinsing a drainage of the self-cleaning filter system of trapped with particles retained rinsing is automatically ensured, in particular by the occurrence of a gravitational flow. In this case, the flow direction of the gravity-induced flow when pumping in the self-cleaning filter system is at least partially opposite to the flow direction prevailing in the cleaning operation, is circulated in the wash liquor in a closed Spülflottenkreislauf.
Um die Entnahme eines derartigen in einer Aufnahme eines wasserführenden Haushaltsgeräts eingesetzten selbstreinigenden Filtersystems zu erleichtern, weist das selbstreinigende Filtersystem eine flüssigkeitsführende Entleerungsanschlusskupplung auf, die mit flüssigkeitsführenden Entleerungskupplungen des wasserführenden Haushaltsgeräts kuppelbar ist. Dabei kann die Entleerungskupplung des wasserführenden Haushaltsgeräts entsprechend ausgebildet sein, dass auch ein Betrieb des wasserführenden Haushaltsgeräts möglich ist, wenn kein selbstreinigendes Filtersystem in die Aufnahme des wasserführenden Haushaltsgeräts eingesetzt ist. Hierzu kann ein Ventil in der flüssigkeitsleitenden Verbindung vorgesehen sein, mit dem die flüssigkeitsleitende Verbindung geöffnet oder geschlossen werden kann. Dabei kann ein Betätigungselement für das Ventil in Form eines Aktuators vorgesehen sein.In order to facilitate the removal of such a self-cleaning filter system used in a receptacle of a water-conducting household appliance, the self-cleaning filter system has a liquid-carrying emptying connection coupling, which can be coupled with liquid-carrying emptying couplings of the water-conducting household appliance. In this case, the emptying coupling of the water-conducting household appliance may be designed accordingly that an operation of the water-conducting household appliance is possible if no self-cleaning filter system is used in the recording of the water-conducting household appliance. For this purpose, a valve may be provided in the liquid-conducting connection, with which the liquid-conducting connection can be opened or closed. In this case, an actuating element for the valve may be provided in the form of an actuator.
In einer bevorzugten Ausführungsform des wasserführenden Haushaltsgeräts ist vorgesehen, dass das selbstreinigende Filtersystem ein feststehend angeordnetes Filterelement aufweist. Somit ergibt sich ein besonders einfacher, für wasserführende Haushaltsgeräte wie Geschirrspül- oder Waschmaschinen geeigneter Aufbau mit einer reduzierten Anzahl von beweglichen Bauteilen. Alternativ kann ein selbstreinigendes Filtersystem verwendet werden, bei dem das Filterelement beweglich, beispielsweise rotierend angeordnet ist. Dabei kann ein Motor vorgesehen sein, der in Wirkverbindung mit dem rotierbaren Filterelement steht und es erlaubt, das Filterelement zu Reinigungszwecken in Rotation zu versetzen, sodass ein das Filterelement verstopfender Filterbelag durch Zentrifugalkräfte abgeschleudert werden kann.In a preferred embodiment of the water-conducting household appliance, it is provided that the self-cleaning filter system has a fixedly arranged filter element. This results in a particularly simple, suitable for water-bearing appliances such as dishwashers or washing machines construction with a reduced number of moving components. Alternatively, a self-cleaning filter system may be used in which the filter element is arranged to be movable, for example rotating. In this case, a motor may be provided which is in operative connection is with the rotatable filter element and allows to put the filter element for cleaning purposes in rotation, so that a filter element clogging filter pad can be thrown off by centrifugal forces.
Das selbstreinigende Filtersystem mit einem feststehend angeordneten Filterelement weist vorzugsweise wenigstens eine Düse auf, die derart angeordnet ist, dass bei Betrieb eine Flüssigkeitsströmung das Filterelement frei von Ablagerungen hält. Dabei sind dieThe self-cleaning filter system with a fixedly arranged filter element preferably has at least one nozzle which is arranged such that, during operation, a liquid flow keeps the filter element free of deposits. Here are the
Düsen derart angeordnet, dass die auf dem freistehenden Filterelement eine einenNozzles arranged such that on the freestanding filter element a a
Drehsinn aufweisende Flüssigkeitsströmung erzeugen, sodass sich der Filterbelag amTurning fluid flow produce so that the filter lining on
Rande eines feststehenden Filterelements sammelt bzw. über den Rand hinausgefördert wird und nach Abschluss eines Reinigungsvorgangs, beim anschließenden Abpumpen der verschmutzten Spülflotte mitabgepumpt werden kann.Edge of a fixed filter element collects or is conveyed beyond the edge and can be mitabgepumped after completion of a cleaning process, during the subsequent pumping out of the dirty rinse liquor.
Um die Reinigungswirkung zu verbessern, kann das selbstreinigende Filtersystem vorzugsweise Reinigungskörper zur Reinigung des Filterelements aufweisen, die durch die wenigstens eine Düse in Bewegung versetzbar sind. Damit weist dieser Aufbau bei verbesserter Reinigung des Filterelements einen besonders einfachen Aufbau auf, da kein Antrieb nötig ist, um die Reinigungskörper während des Betriebs in Bewegung zu versetzen, sondern dies durch die mittels der Düsen eingebrachte Strömung bewirkt wird. Alternativ jedoch ist auch denkbar, Reinigungskörper vorzusehen, die über eine Achse mittels einer Antriebseinrichtung verbunden sind, die die Reinigungskörper während des Betriebs in Bewegung versetzt.In order to improve the cleaning effect, the self-cleaning filter system may preferably have cleaning bodies for cleaning the filter element, which can be set in motion by the at least one nozzle. Thus, this structure with improved cleaning of the filter element has a particularly simple structure, since no drive is necessary to move the cleaning body during operation in motion, but this is effected by the introduced by means of the nozzle flow. Alternatively, however, it is also conceivable to provide cleaning bodies which are connected via an axle by means of a drive device which sets the cleaning bodies in motion during operation.
Ferner gehört zu der Erfindung ein selbstreinigendes Filtersystem für ein wasserführendes Haushaltsgerät, insbesondere eine Geschirrspül- oder Waschmaschine.Furthermore, the invention includes a self-cleaning filter system for a water-conducting household appliance, in particular a dishwasher or washing machine.
Im Folgenden wird die Erfindung unter Bezugnahme auf eine Zeichnung erläutert. Es zeigen:In the following the invention will be explained with reference to a drawing. Show it:
Fig. 1 Eine schematische Darstellung eines Abschnitts eines erfindungsgemäßen wasserführenden Haushaltsgeräts.Fig. 1 is a schematic representation of a portion of a water-conducting household appliance according to the invention.
Dargestellt ist als Ausführungsbeispiel für ein wasserführendes Haushaltsgerät eine Geschirrspülmaschine 2 mit einem Bodenbereich 16 eines Spülbehälters (nicht dargestellt), in den beispielsweise auf Geschirrkörben gelagertes Spülgut, wie beispielsweise Geschirr zur Behandlung eingebracht werden kann.Shown is as an exemplary embodiment of a water-conducting household appliance, a dishwasher 2 with a bottom portion 16 of a washing (not shown), in the example stored on dish racks, such as dishes can be introduced for treatment.
Eine derartige Geschirrspülmaschine weist eine Umwälzpumpe (nicht dargestellt) auf, mit der sich im Bodenbereich 16 sammelnde Spülflotte angesaugt werden kann, um durch Leitungen (nicht dargestellt) zu innerhalb des Spülbehälters angeordneten Spüleinrichtungen, wie beispielsweise drehbaren Sprüharmen (nicht dargestellt) zugeführt zu werden, mit denen zu reinigendes Spülgut mit Spülflotte beaufschlagt werden kann.Such a dishwashing machine has a circulation pump (not shown) with which flushing liquor collecting in the bottom area 16 can be sucked in so as to be supplied through lines (not shown) to flushing devices arranged inside the washing tub, such as rotatable spraying arms (not shown), with which to be cleaned items to be washed with rinse liquor.
Um am Ende eines Reinigungsgangs verschmutzte Spülflotte aus der Geschirrspülmaschine 2 in ein hausseitiges Abwasserentsorgungssystem (nicht dargestellt) zu entsorgen, ist ein Ablauf 12 vorgesehen, der flüssigkeitsleitend mit einer Laugenpumpe (nicht dargestellt) verbunden ist, die eine Verbindung mit dem hausseitigen Abwasserentsorgungssystem herstellt.In order to dispose of soiled wash liquor from the dishwasher 2 (not shown) at the end of a cleaning cycle, a drain 12 is provided, which is connected in liquid communication with a drain pump (not shown) which establishes a connection with the house-side wastewater disposal system.
Der Bodenbereich 16 der Geschirrspülmaschine 2 weist ferner einen Sumpf 18 auf, in dem sich die von dem Spülgut herabtropfende Spülflotte sammeln kann, um anschließend von der Umwälzpumpe bei Reinigungsbetrieb der Geschirrspülmaschine, bei dem Spülflotte umgewälzt wird oder beim Entleerungsbetrieb, bei dem die Spülflotte mit der Laugenpumpe aus der Geschirrspülmaschine 2 herausbefördert wird, angesaugt werden kann. Um eine Beschädigung oder Blockade der Laugenpumpe zu verhindern, ist der Sumpf 18 mit einem Fein- und/oder Grobfilter 14 abgedeckt, wobei das Grobfilter z.B. Zahnstocher, Knochen etc. zurückhält und so verhindert, dass die Laugenpumpe Schaden nimmt oder blockiert, während das Feinfilter Partikel < 1 ,1 mm zurückhält. Dabei ist das Fein- und/oder Grobfilter 14 lösbar oberhalb des Sumpfes 18 angeordnet und kann so im Bedarfsfall von einer Bedienperson werkzeuglos entnommen werden, um eine Reinigung vorzunehmen.The bottom portion 16 of the dishwasher 2 also has a sump 18, in which the rinsing liquor from the items to be washed can collect, to be then circulated by the circulation pump during cleaning operation of the dishwasher, at the rinsing liquor or during emptying operation, in which the rinsing liquor with the Lye pump is conveyed out of the dishwasher 2, can be sucked. In order to prevent damage or blockage of the drain pump, the sump 18 is covered with a fine and / or coarse filter 14, the coarse filter e.g. Toothpicks, bones, etc. retains and thus prevents the drain pump damage or blocked, while the fine filter particles <1, 1 mm holds back. In this case, the fine and / or coarse filter 14 is arranged detachably above the sump 18 and can be removed without tools if necessary by an operator to make a cleaning.
Im Reinigungsbetrieb, bei dem Spülflotte in einem geschlossenen Spülkreislauf 8 umgewälzt wird, strömt Spülflotte von der Umwälzpumpe in ein selbstreinigendes Filtersystem 4 und dann weiter zu einem Verteiler (nicht dargestellt), wie beispielsweise einer Wasserweiche, die es erlaubt, beispielsweise einen oberen oder unteren Sprüharm gezielt mit Spülflotte zu versorgen, um so in gewünschter Weise Spülgut in einem Geschirrkorb mit Spülflotte zu beaufschlagen. Das selbstreinigende Filtersystem 4 weist einen als Mikrofilter ausgebildetes Filterelement 6 auf, mit dem aufgrund seiner Maschengröße Partikel mit einer Partikelgröße von 0,8 bis 0,15 mm zurückgehalten werden können. Das Filterelement 6 ist scheibenförmig ausgebildet und ortsfest, d.h. unbeweglich angeordnet. Dabei kann eine Vielzahl von scheibenförmig ausgebildeten Filtern vorgesehen sein, die ein Filterelement 6 bilden. Um einer Verstopfung des Filterelements 6 durch einen sich bildenden Belag entgegenzuwirken, erfolgt die Zufuhr von zu filternder Spülflotte mittels Düsen 16, die derart angeordnet sind, dass sie eine Rotationsrichtung aufweisende Strömung erzeugen, sodass sich auf den Filterelementen kein Belag bilden kann, sondern die vom Filterelement 6 zurückgehaltenen Partikel durch die Fliehkraft an den Rand der ringförmigen Filterelemente 6 getragen werden und dort die Oberfläche der ringförmigen Filterelemente 6 verlassen.In the cleaning mode, in which rinsing liquor is circulated in a closed rinsing circuit 8, rinsing fluid flows from the circulation pump into a self-cleaning filter system 4 and then on to a distributor (not shown), such as a water diverter which allows it, for example an upper or lower spray arm to supply specifically with rinsing water, so as to apply in a desired manner items to be washed in a dish rack with rinsing liquor. The self-cleaning filter system 4 has a filter element 6 designed as a microfilter, with which particles with a particle size of 0.8 to 0.15 mm can be retained due to its mesh size. The filter element 6 is disc-shaped and stationary, ie arranged immovable. In this case, a plurality of disk-shaped filters may be provided which form a filter element 6. In order to counteract a blockage of the filter element 6 by a forming coating, the supply of rinsing liquid to be filtered takes place by means of nozzles 16 which are arranged such that they produce a direction of rotation having flow, so that can form on the filter elements no coating, but from the Filter element 6 retained particles are carried by the centrifugal force to the edge of the annular filter elements 6 and there leave the surface of the annular filter elements 6.
Zur Erhöhung der Reinigungsleistung sind Reinigungskörper 20 vorgesehen, die drehbar angeordnet sind und in Kontakt mit der Oberfläche des Filterelements 6 stehen. DieTo increase the cleaning performance cleaning body 20 are provided which are rotatably arranged and are in contact with the surface of the filter element 6. The
Reinigungskörper 20 sind in Bezug zu den Düsen 16 derart angeordnet, dass eine aus den Düsen 16 austretende Strömung die Reinigungskörper 20 in eine Drehbewegung versetzt und so bewirkt, dass die Filterelemente frei von einem Belag gehalten werden.Cleaning bodies 20 are arranged with respect to the nozzles 16 such that a flow exiting from the nozzles 16 causes the cleaning bodies 20 to rotate and thus causes the filter elements to be kept free of a deposit.
Dabei können die Reinigungskörper federnd vorgespannt angeordnet sein, sodass sichergestellt ist, dass die Reinigungskörper dauerhaften Kontakt mit den FilterelementenIn this case, the cleaning body may be arranged resiliently biased, so as to ensure that the cleaning body permanent contact with the filter elements
6 aufweisen, und so eine zuverlässige Reinigungswirkung gewährleistet ist.6, and so a reliable cleaning effect is ensured.
Während des Betriebs, bei dem Spülflotte umgewälzt wird, strömt mit Partikeln versetzte Spülflotte im Spülkreislauf 8 und wird durch das selbstreinigende Filter 6 geführt, wobei durch die Anordnung der Düsen 6 bewirkt wird, dass eine einen Drehsinn aufweisende Flüssigkeitsströmung erzeugt wird, die die Reinigungskörper 20 in Bewegung versetzt und so gewährleistet, dass sich die Filterelemente 6 nicht durch Belagbildung zusetzen können.During operation, in which rinsing liquor is circulated, particle-displaced rinsing fluid flows in the rinsing circuit 8 and is guided through the self-cleaning filter 6, wherein the arrangement of the nozzles 6 causes a rotational fluid flow having the cleaning body 20 is generated set in motion, thus ensuring that the filter elements 6 can not be clogged by fouling.
Nach Beendigung eines Reinigungsvorgangs folgt ein Abpumpvorgang, bei dem die verschmutzte Spülflotte durch den Ablauf 12 mittels einer Laugenpumpe in ein hausseitiges Abwasserentsorgungssystem gefördert wird. Dabei fließt Spülflotte, die in den selbstreinigenden Filter verblieben ist sowie die von den Filterelementen 6 zurückgehaltenen Partikel durch die flüssigkeitsleitende Verbindung 10, die ein Verbindung mit dem Pumpentopf 18 herstellt und damit mit dem Ablauf 12, sodass bei Beginn eines neuen Spülvorgangs ein vollständig gereinigtes selbstreinigendes Filtersystem 4 zur Verfügung steht.After completion of a cleaning process, an Abpumpvorgang follows, in which the soiled wash liquor is conveyed through the drain 12 by means of a drain pump in a house-side sewage disposal system. Flushing liquor which has remained in the self-cleaning filter and that of the filter elements 6 flows retained particles through the liquid-conducting connection 10, which establishes a connection with the sump 18 and thus with the drain 12, so that at the beginning of a new rinse a completely purified self-cleaning filter system 4 is available.
Um im Bedarfsfall die Reinigung des selbstreinigenden Filters 4 zu erleichtern, kann das selbstreinigende Filtersystem 4 werkzeuglos, beispielsweise anhand eines Handgriffes 22 entnommen werden. Hierzu weist die Geschirrspülmaschine 2 eine Aufnahme 24 auf, die mit Kupplungen für in das selbstreinigende Filter 4 einströmende Spülflotte und aus dem Filter 4 abströmende Spülflotte versehen ist sowie mit einer dritten Kupplung zur Herstellung einer Verbindung mit der flüssigkeitsleitenden Verbindung 10, die eine Verbindung mit dem Sumpf 18 und dem Ablauf 12 herstellt. Dabei sind diese Kupplungen so ausgebildet, dass sie selbsttätig und werkzeuglos eine flüssigkeitsleitende Verbindung mit entsprechenden Kupplungen des selbstreinigenden Filters 4 herstellen.In order to facilitate the cleaning of the self-cleaning filter 4, if necessary, the self-cleaning filter system 4 can be removed without tools, for example by means of a handle 22. For this purpose, the dishwasher 2 has a receptacle 24 which is provided with couplings for flushing liquor flowing into the self-cleaning filter 4 and flushing liquor flowing out of the filter 4 and with a third coupling for establishing a connection with the liquid-conducting connection 10, which connects to the Swamp 18 and the drain 12 manufactures. These couplings are designed so that they automatically and without tools produce a liquid-conducting connection with corresponding couplings of the self-cleaning filter 4.
Somit ist ein zuverlässig arbeitendes Filtersystem für eine Geschirrspülmaschine gegeben, das zugleich im Bedarfsfall leicht zu reinigen ist. Thus, a reliable filter system is provided for a dishwasher, which is also easy to clean if necessary.
l CN l C N
BezugszeichenlisteLIST OF REFERENCE NUMBERS
Wasserfuhrendes HaushaltsgerätWater-conducting household appliance
4 Selbstreinigendes Filtersystem4 Self-cleaning filter system
6 Filterelement6 filter element
8 Spülflottenkreislauf8 rinse liquor cycle
10 Flüssigkeitsleitende Verbindung10 Fluid-conducting connection
12 Ablauf12 process
14 Fein- und/oder Grobfilter14 fine and / or coarse filters
16 Bodenbereich16 floor area
18 Sumpf18 swamp
20 Reinigungskörper20 cleaning bodies
22 Handgriff22 handle
24 Aufnahme24 recording
26 Düse 26 nozzle
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007061038.8 | 2007-12-18 | ||
| DE102007061038.8A DE102007061038B4 (en) | 2007-12-18 | 2007-12-18 | Water-conducting household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009077283A1 true WO2009077283A1 (en) | 2009-06-25 |
Family
ID=40380712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/065880 Ceased WO2009077283A1 (en) | 2007-12-18 | 2008-11-20 | Water-bearing domestic appliance |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102007061038B4 (en) |
| WO (1) | WO2009077283A1 (en) |
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|---|---|
| DE102007061038A1 (en) | 2009-06-25 |
| DE102007061038B4 (en) | 2016-10-27 |
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