EP0178202B1 - Geschirrspüler mit Mikrofilter für Flüssigkeit - Google Patents

Geschirrspüler mit Mikrofilter für Flüssigkeit Download PDF

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Publication number
EP0178202B1
EP0178202B1 EP19850401745 EP85401745A EP0178202B1 EP 0178202 B1 EP0178202 B1 EP 0178202B1 EP 19850401745 EP19850401745 EP 19850401745 EP 85401745 A EP85401745 A EP 85401745A EP 0178202 B1 EP0178202 B1 EP 0178202B1
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EP
European Patent Office
Prior art keywords
liquid
washing
microfilter
during
emptying
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
Application number
EP19850401745
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English (en)
French (fr)
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EP0178202A1 (de
Inventor
Camille Barbier
Jean-Claude Herve
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.)
Esswein SA
Original Assignee
Esswein SA
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Filing date
Publication date
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Application filed by Esswein SA filed Critical Esswein SA
Publication of EP0178202A1 publication Critical patent/EP0178202A1/de
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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
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning
    • 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
    • A47L15/4204—Flat filters

Definitions

  • the present invention relates to a liquid microfiltration dishwasher.
  • a dishwasher usually includes a filter designed to separate the waste removed from the dishes, the washing and rinsing liquid of the latter.
  • This filter is often placed in the tank of the machine, between the underside of the lowest spray arm and the inlet of the spray or rinsing liquid recycling pump.
  • the washing or rinsing liquid falling from the dish baskets passes through this filter under the effect of gravity before reaching the inlet of this watering or recycling liquid pump and the majority of the waste being in this liquid is retained by this filter.
  • the filtered liquid is again discharged by this sprinkler or recycling pump, into the spray arms of the machine and projected onto the dishes in the dish baskets to clean them, and a new cycle of circulation of the liquid begins again.
  • the liquid is evacuated by a drain pump.
  • known dishwashers make it possible to obtain clean dishes in each of their operating programs with a relatively large predetermined quantity of water admitted for the washing and rinsing phases.
  • a dishwasher comprises in its tub during the washing and rinsing cycles of the dishes, on the one hand, for a microfiltration of micro-waste a stream of liquid-crossing a microfilter, created by a drain pump which turns in a direction opposite to that allowing a discharge of the liquid towards the outside of the machine, and on the other hand, for a filtering of large and medium waste a stream of liquid passing through a standard medium filter , created by a recycling pump, and at the end of the washing and rinsing cycles of the dishes, a draining of the liquid from its bowl, by this draining pump which sucks liquid both through the microfilter and its opening the inlet, pushes it out of the machine at the same time as the micro-waste found in this microfilter and makes it clean.
  • a statement made for the first time is that in the machine described in the publication EP-A-0150147, the cleaning or unclogging of the microfilter is done only at the end of the washing or rinsing cycles, by a stream of draining liquid drained by the drain pump through this microfilter loaded with micro-waste and in the opposite direction to the current of liquid subjected to microfiltration, that the clogging of this microfilter is rapid during the washing and rinsing cycles and that this clogging hinders the passage of the microfilter by the current of liquid subjected to microfiltration and even prevents this microfiltration, and that the dishes washed in such a case remain dirty or have insufficient cleanliness.
  • a dishwasher comprises a circuit for recycling and spraying washing or rinsing liquid and a circuit for microfiltration and emptying of this washing or rinsing liquid.
  • a recycling pump ensures a suction of the liquid in the tank of the device and a spraying of this liquid on the articles subjected to washing.
  • a pump and a two-way valve operate either during the washing and rinsing cycles in dirt collection mode according to which the liquid collected in the bottom of the tank of the device is, , returned to the tank, after microfiltration, through a collector and / or a microfilter which, retain dirt and micro-waste, either at the end of these washing and rinsing cycles, in the draining mode according to which the liquid in the tank is partly evacuated through the microfilter and the collector to unclog these or to rid them of dirt retained during the microfiltration and to discharge them into a drain pipe and partly directly into this drain pipe.
  • This operation in emptying mode at the end of washing and rinsing cycles can be extended, at the end of washing and rinsing cycles, by additional jerking or pulsating emptying, in other words brief liquid filling followed by brief emptying to perfect the evacuation of dirt and micro-waste retained in the collector or microfilter.
  • the object of the present invention is to produce an economical dishwasher in which the microfiltration of the liquid in its tank remains effective throughout the duration of the washing and rinsing cycles.
  • a dishwasher provided with means ensuring, during the washing and rinsing cycles, microfiltration of liquid by a stream of liquid passing through a fine-mesh element of a microfilter, and ensuring at the end of these washing and rinsing cycles emptying of the liquid with or without the addition of brief liquid fillings followed by brief emptying and means making it possible to create a reverse flow of the liquid through this microfilter and to evacuate this liquid and the micro-waste to the outside retained by this microfilter, is characterized in that it further comprises means making it possible to carry out, in addition to the usual emptying at the end of the washing and rinsing cycles, one or more brief intermediate empties along the washing and rinsing in order to ensure effective cleaning of said microfilter.
  • a dishwasher 1 produced according to the invention and illustrated in FIGS. 1 and 2 comprises, on the outside, a bodywork 2, and on the inside, a tank 3 in which dish baskets 4 and 5 are mainly mounted, sprinklers 6 and 7, a pumping device 8, on the one hand means carrying out a standard simultaneous filtering of all the liquid to rid it of large and medium waste and on the other hand means carrying out microfiltration this liquid gradually to rid it of micro-waste or small waste.
  • the pumping device 8 comprises in the example illustrated on the one hand a pump 10 intended for recycling of liquid which consists in sucking up liquid accumulated in the bottom of the tank 3 and in discharging it into the sprinkler reels 6 and 7 which spray liquid on the dishes to clean or rinse them and on the other hand a pump 11 intended for the emptying of the dishwasher 1, in other words the evacuation of the liquid and a motor 12 with two directions of rotation ensuring a drive of these two pumps, the wheels of which are fixed to a common shaft 13.
  • the recycling pump 10 is a pump of the centrifugal type.
  • This pump 10 comprises a body 14, a impeller 15, an inlet opening 16 and a discharge line 17 extended by hydraulic circuits from the dishwasher 1 to the sprinkler reels 6 and 7.
  • the drain pump 11 is a vane type pump which comprises a body 18, an intake opening 19, an intake pipe 20, a chamber 21, a vane wheel 22 which is fixed on the same shaft 13 as that of the wheel 15 of the centrifugal pump, a discharge line 23 and a non-return valve 24.
  • the intake opening 19 of the drain pump 11 and the intake manifold 16 of the pump 10 open into the same space 25 formed in the lowest part of the bottom of the tank 3 and which is located between the two pumps 10 and 11.
  • the common shaft 13 of the wheels 15 and 22 of the two pumps 10 and 11 is mounted through this space 25.
  • the wheels 15 and 22 of the two pumps may have independent shafts and be driven by independent motors rotating in two directions, not shown, or the two pumps 10 and 11 may be equivalent pumps of another type known than those described above, without departing from the scope of the present invention.
  • the means carrying out standard filtering of the liquid and the means carrying out microfiltration are constituted by a filtering device 9 of liquid which comprises at least two independent filters, one of which is an average filter carrying out standard filtering which rids or separates this liquid, large and medium waste and the other a microfilter used to rid or separate the liquid from the maximum of micro-waste or small size waste which have passed through the medium filter.
  • the means carrying out standard filtering can comprise either a medium filter or a coarse filter for ridding or separating this liquid from large waste and a medium filter for ridding or separating this liquid from large and medium waste.
  • a coarse filter is a filter having large meshes of the order of 5 millimeters
  • a medium filter is a filter having medium meshes of the order of one millimeter
  • a microfilter is a filter having fine meshes of the order of a few tenths of a millimeter, for example two tenths of a millimeter.
  • the microfilter is placed in communication with the drain pump through a fraction of the surface of the intake opening thereof. As a result, by draining the entry of liquid into the drain pump 11 is made both through the intake opening of this pump, through the microfilter and through the passage opening for the shaft of this pump.
  • microfiltration is preferably intended for filtering liquid which is already subjected to filtering with a medium filter.
  • liquid stream passing through the medium filter is preferably created by the recycling pump while the liquid stream passing through the microfilter is preferably created by the drain pump.
  • the filtering device 9 comprises a medium filter 26, a coarse filter 28 and a microfilter 29.
  • the filtering device 9 is mounted in the lower part of the tank 3 under the reel lower watering hose or the lower reel 6 to completely separate the inlets or inlets 16 and 19 from the pumps, washing or rinsing liquid which has fallen from the dishes, so that all the recycling liquid cannot be admitted into the recycling pump 10 only after having been disposed of its large or medium-sized waste and progressively with its micro-waste.
  • This liquid is then discharged by the recycling pump 10 into the watering reels 6-7 and sprayed from these reels onto the dishes to clean or rinse them before falling back to the bottom 3 of the tank for a new filtering, and a new liquid cycle.
  • the medium filter 26 can be removable or fixed and have a flat or slightly conical active surface.
  • the medium filter 26 comprises in its active surface a depression 31 for receiving a removable assembly 32 consisting of a microfilter 29, and a coarse filter 28.
  • This coarse filter or drain filter 28 comprises a receptacle 34 whose bottom is a large mesh element.
  • the receptacle 34 of the large filter 28 is itself housed in a well 35 arranged in one end of the depression 31. This well 35 is in direct and exclusive communication with the inlet opening 19 of the drain pump.
  • the coarse filter 28 is intended to retain coarse waste which could hamper the operation of the drain pump 11.
  • the microfilter 29 comprises a microfiltration pot 33 consisting of a closed box provided with an inlet pipe 36, including at at least a portion of the wall consists of a very fine mesh element 27.
  • the upper wall of the microfilter pot consists of the fine mesh element 27 of the order of a few tenths of a millimeter for example two tenths of a millimeter, while the side and bottom walls are solid walls, and the inlet tube 36 puts the microfiltration pot 33 in communication with the outside.
  • This inlet manifold 36 has its free end 37 facing downwards, so that when the removable assembly 32 is placed in the depression 31 of the medium filter 26 which is already mounted in the bottom of the tank 3 , this free end 37 of the inlet pipe 36 covers and encloses a connection pipe 38 of a liquid guide channel 39 formed in the opening 19 and the intake pipe 20 of the drain pump 11.
  • the drain pump 11 during washing and rinsing rotates in one direction to suck the liquid located in the bottom 25 of the tank 3, through the passage opening of its shaft, and the discharge through the liquid guide channel 39, the connecting pipes 38 and inlet pipes 36, the microfiltration jar 33 and the fine mesh element 27 of the microfilter 29 and return part of the liquid to the tank 3 in the bottom of the tank 3, the micro-waste then being retained in the microfiltration jar 33 by the fine mesh element 27 of the microfilter 29, and during the emptying rotates in the opposite direction to suck liquid through its opening inlet 19 and the fine mesh element 27 of the microfilter 29, the connection tube 38, the liquid guide channel 39 and discharge it through the discharge line 23, the non-return valve 24 towards the outside of the machine.
  • the liquid in the tank 3 is thus gradually freed of micro-waste and the dishes cleaned with a liquid thus filtered requires only a reduced quantity of water in the washing and rinsing sequences of the operating programs of the dishwasher 1, compared to those required in known devices, while obtaining clean cleaned dishes when they come out of the machine, the dishwasher operating programs being controlled by a programmer or an electronic control device indicated at 50, which, produced according to a known technique, will not be described in detail.
  • the recycling 10 and drain 11 pumps mounted on a common shaft 13 rotate in the direction of arrow 40.
  • the recycling pump 10 sucks a large part of the liquid which has passed through the medium filter 26 and discharges it into the sprinkler reels 6 and 7 while the drain pump 11, because of the presence of the non-return valve 24 on the discharge line, sucks through a passage opening 42 of the shaft of its wheel 22 a part of the liquid which has passed through the filter 26 and discharges it through the microfilter 29 into the tank 3 for microfiltration of the liquid.
  • the two pumps 10 and 11 thus create in the tank 3, two independent streams of liquid for filtering the latter.
  • the two pumps 10 and 11 rotate in the opposite direction to the previous one, indicated by an arrow 41.
  • the recycling pump 10 is in this case deactivated, following an entry of the air through an air intake chimney 45, while the drain pump 11 sucks the liquid and discharges it outside through its discharge pipe 23 and its non-return valve 24.
  • the sucked liquid comes from two different circuits: on the one hand the liquid sucked results from a suction of liquid from the bottom of the tank 3 through the large filter 28 in its intake opening 19 and its suction pipe 20, on the other hand the sucked liquid results from a suction of liquid through the fine mesh element 27, the microfiltration pot 33 of the microfilter 29, the pipes 36, 38, the liquid guide channel 39, in the suction line 20.
  • the second circuit of liquid sucked has several advantages. This second circuit of aspirated liquid which crosses the microfiltration pot 33 makes it possible to entrain the micro-waste which are retained there and to evacuate them.
  • the washing and rinsing cycles comprises, in addition to the usual emptying at the end of these cycles, one or more brief intermediate emptying.
  • These brief intermediate empties ensure the entrainment of the micro-waste retained by the microfilter 29 to reject them outside and consequently unclogging or cleaning of the fine mesh element 27 of the micrpfilter 29, to give the latter all its effectiveness in the microfiltration of the liquid throughout the washing and rinsing cycles of the dishwasher.
  • These brief intermediate empties may or may not be followed by compensatory water filling.
  • the brief intermediate drainings during the washing and rinsing cycles of the dishwasher are carried out either at regular intervals during these washing and rinsing cycles or at shorter intervals at the end of these cycles than those at the beginning of these cycles.
  • the means of the programmer or control device 50 (FIG. 1) which also executes in its main function, the usual selected operating programs.
  • the brief intermediate empties during the washing and rinsing cycles of the dishwasher are triggered each time one or more predetermined gradual thresholds of liquid temperatures in the tank 3 of the dishwasher are exceeded.
  • a temperature sensor of a known type 51 (FIG. 2), placed in the liquid bath at the bottom of the tank 3 of the dishwasher, is associated with the programmer or control device 50 to set performs these brief intermediate oil changes.
  • the brief intermediate emptying operations during the washing and rinsing cycles of the dishwasher are carried out each time the pressure of the stream of liquid inside the microfiltration pot 23 of the microfilter 29 exceeds a threshold of predetermined pressure.
  • the pressure of this stream of liquid increases in the microfiltration pot 33.
  • the pressure of the current of liquid inside the microfiltration pot 23 thus reflects the degree of clogging of the fine mesh element. For the microfiltration of the liquid to be effective during these washing and rinsing cycles, it is necessary that the clogging of the fine mesh element 27 by the micro-waste does not exceed a predetermined degree.
  • a pressure sensor of one type. known 52 (FIG. 3) having an adjustable threshold of liquid pressure and placed in the microfiltration pot 33 of the micro-filter 29, is associated with the programmer or control device 50 to trigger a brief intermediate emptying each time this threshold is exceeded by pressure liquid in this microfiltration jar 33.
  • the lower spray reel 6 of the dishwasher is provided, in the surface of its half. lower facing the middle filters. 26, coarse 28 and microfilter 29 of the filtering device 9, from one to several nozzles creating one or more jets of unclogging water directed more or less perpendicularly to the surface of the fine mesh element 27 of the microfilter 29.
  • This or these water jets allow, by their periodic passages on the microfilter 29; periodically take off the micro-waste which, being in the microfiltration pot 33, tends to cling to the fine mesh element 27.
  • the unclogging effects of the miGrofilter 29 by these water jets sent from the lower watering reel 6, are thus added to the unclogging effects by brief intermediate emptying, described in previous paragraphs, to make the microfiltration of the liquid in the dishwasher 1 even more effective.
  • a dishwasher produced according to the invention is not only economical but also provides clean dishes with a relatively reduced amount of water used during washing and rinsing compared to that used in known dishwashers.
  • the microfilter 29 does not interfere with the irretrieval of the liquid carried out by the recycling pump 10 and by therefore cleaning the dishes, while allowing a gradual microfiltration of this liquid.
  • the meshes of the medium filter 26 which occupies the majority of the surface of the bottom of the tank 3 of the dishwasher, have been determined so that the recycling liquid flow is sufficient for effective washing and rinsing of the dishes, despite the presence of the waste retained by these filters.
  • the quantity of liquid consequently the quantity of liquid provided for each phase of the operating programs is thus advantageously reduced compared to that required in a known dishwasher, without compromising the efficiency of the machine.
  • a reduction in the quantity of liquid results in an advantageous lowering of the consumption of electrical energy in the implementation of each of the operating programs of the dishwasher 1.
  • the dishwasher 1 produced according to the invention is of this economic fact in its operation.
  • the microfilter 29 can be mounted in the tank 3 below the medium filter 26, and placed in communication with the drain pump 11 for an operation similar to that of the microfilter of the example illustrated. and described in the previous paragraphs.
  • the liquid discharged through the microfilter 29 by the drain pump 11, following the washing and rinsing of the dishes, is discharged into the tank 3 in the space below the medium filter 26 instead of being returned in the tank 3 in the space above this medium filter 26.

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  • Washing And Drying Of Tableware (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (9)

1. Spülmaschine, mit Mitteln versehen, die während der Wasch- und Spülzyklen eine Feinfiltrierung der Flüssigkeit durch einen Flüssigkeitsstrom gewährleisten, der ein Feinmaschenelement (27) eines Mikrofilters (29) durchströmt, und die am Ende dieser Wasch- und Spülzyklen eine Entleerung der Flüssigkeit gewährleisten, welcher kurze Flüssigkeits-Einfüllzeiten, auf die kurze Entleerungszeiten folgen, hinzugefügt werden oder nicht, und mit Mitteln versehen, die die Bildung einer umgekehrten Flüssigkeitsströmung durch diesen Mikrofilter (29) sowie die Abfuhr dieser Flüssigkeit und der von diesem Mikrofilterzurückgehaltenen feinsten Schmutzteilchen nach Außen ermöglichen, dadurch gekennzeichnet, daß sie ferner Mittel umfaßt, die es ermöglichen, daß zu den üblichen, am Ende der Wasch- und Spülzyklen erfolgenden Entleerungen eine oder mehrere kurze Zwischenentleerungen während der Wasch- und Spülzyklen hinzugefügt werden, um eine wirksame Freilegung des genannten Mikrofilters (29) zu ermöglichen.
2. Spülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß Mittel vorgesehen sind, die während ihres Betriebs die kurzen Zwischenentleerungen gewährleisten, die zu regelmäßigen Zeitabständen während der Wasch- und Spülzyklen vorgenommen werden.
3. Spülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß Mittel vorgesehen sind, die im Betrieb während der Waschund Spülzyklen die kurzen Zwischenentleerungen gewährleisten, welche am Ende dieser Zyklen zu kürzeren Zeitabständen als diejenigen am Anfang dieser Zyklen erfolgen.
4. Spülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß Mittel vorgesehen sind, die im Betrieb während der Waschund Spülzyklen die kurzen Zwischenentleerungen gewährleisten, welche bei jeder Überschreitung einer oder mehrerer vorbestimmter, abgestufter Temperaturschwellen der Flüssigkeit in der Wanne der Spülmaschine ausgelöst werden.
5. Spülmaschine nach Anspruch 1, dadurch gekennzeichnet, daß Mittel vorgesehen sind, die im Betrieb während der Waschund Spülzyklen die kurzen Zwischenentleerungen gewährleisten, welche jedesmal erfolgen, wenn der Druck des Flüssigkeitsstroms innerhalb des Mikrofilters (29) eine vorbestimmte Druckschwelle überschreitet.
6. Spülmaschine nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß sie ein Programmiergerät bzw. eine Vorrichtung zur elektronischen Steuerung (50) umfaßt, welche bzw. welches sowohl die üblichen gewählten Arbeitsprogramme einer Spülmaschine als auch die kurzen Zwischenentleerungen während der Wasch- und Spülzyklen ausführt.
7. Spülmaschine nach Anspruch 4, dadurch gekennzeichnet, daß sie einen Temperaturfühler (51) umfaßt, der einem Programmiergerät bzw. einer Vorrichtung zur elektronischen Steuerung (50) der Spülmaschine zugeordnet und in dem Flüssigkeitsbad der Wanne (3) angeordnet ist, eine oder mehrere einstellbare Temperaturschwellen aufweist und bei jeder Überschreitung jeder dieser Schwellen durch die Flüssigkeitstemperatur in der Spülmaschine, welche vom Fühler erfaßt wird, eine kurze Zwischenentleerung während der Waschund Spülzyklen auslöst.
8. Spülmaschine nach Anspruch 4, dadurch gekennzeichnet, daß sie einen Fühler (52) für den Flüssigkeitsdruck umfaßt, der einem Programmiergerät bzw. einer Vorrichtung zur elektronischen Steuerung (50) der Spülmaschine zugeordnet und in dem Topf (33) zur Feinfilterung mittels des Mikrofilters (29) angeordnet ist, eine einstellbare Druckschwelle aufweist und bei jeder Überschreitung dieser Schwelle durch den Flüssigkeitsdruck in diesem Topf (33) zur Feinfilterung eine kurze Zwischenentleerung während der Wasch- und Spülzyklen auslöst.
9. Spülmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß Mittel vorgesehen sind, die im Betrieb kurze Zwischenentleerungen gewährleisten, auf die Einfüllvoegänge zum Wasserkompensieren in der Spülmaschine folgen.
EP19850401745 1984-09-11 1985-09-06 Geschirrspüler mit Mikrofilter für Flüssigkeit Expired EP0178202B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8413937 1984-09-11
FR8413937A FR2569973B1 (fr) 1984-09-11 1984-09-11 Lave-vaisselle a microfiltrage de liquide

Publications (2)

Publication Number Publication Date
EP0178202A1 EP0178202A1 (de) 1986-04-16
EP0178202B1 true EP0178202B1 (de) 1989-01-11

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Application Number Title Priority Date Filing Date
EP19850401745 Expired EP0178202B1 (de) 1984-09-11 1985-09-06 Geschirrspüler mit Mikrofilter für Flüssigkeit

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EP (1) EP0178202B1 (de)
DE (1) DE3567368D1 (de)
ES (1) ES8701482A1 (de)
FR (1) FR2569973B1 (de)

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FR2676349B1 (fr) * 1991-05-17 1995-03-31 Esswein Sa Lave-vaisselle a microfiltre pratiquement non bouchable.
ES2292692T3 (es) * 2002-11-28 2008-03-16 Whirlpool Corporation Lavavajillas con filtro plano que comprende zonas con dimensiones de agujero de flujo diferentes.
US8667974B2 (en) 2009-12-21 2014-03-11 Whirlpool Corporation Rotating filter for a dishwashing machine
US9918609B2 (en) 2009-12-21 2018-03-20 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9119515B2 (en) 2010-12-03 2015-09-01 Whirlpool Corporation Dishwasher with unitary wash module
US8746261B2 (en) 2009-12-21 2014-06-10 Whirlpool Corporation Rotating drum filter for a dishwashing machine
US9687135B2 (en) 2009-12-21 2017-06-27 Whirlpool Corporation Automatic dishwasher with pump assembly
US8627832B2 (en) 2010-12-13 2014-01-14 Whirlpool Corporation Rotating filter for a dishwashing machine
US9668636B2 (en) 2010-11-16 2017-06-06 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9113766B2 (en) 2010-11-16 2015-08-25 Whirlpool Corporation Method and apparatus for dishwasher with common heating element for multiple treating chambers
US9034112B2 (en) 2010-12-03 2015-05-19 Whirlpool Corporation Dishwasher with shared heater
US8733376B2 (en) 2011-05-16 2014-05-27 Whirlpool Corporation Dishwasher with filter assembly
US9107559B2 (en) 2011-05-16 2015-08-18 Whirlpool Corporation Dishwasher with filter assembly
US9005369B2 (en) 2011-06-20 2015-04-14 Whirlpool Corporation Filter assembly for a dishwasher
US9265401B2 (en) 2011-06-20 2016-02-23 Whirlpool Corporation Rotating filter for a dishwashing machine
US9010344B2 (en) 2011-06-20 2015-04-21 Whirlpool Corporation Rotating filter for a dishwashing machine
US9861251B2 (en) 2011-06-20 2018-01-09 Whirlpool Corporation Filter with artificial boundary for a dishwashing machine
US20120318296A1 (en) 2011-06-20 2012-12-20 Whirlpool Corporation Ultra micron filter for a dishwasher
US9301667B2 (en) 2012-02-27 2016-04-05 Whirlpool Corporation Soil chopping system for a dishwasher
US9237836B2 (en) 2012-05-30 2016-01-19 Whirlpool Corporation Rotating filter for a dishwasher
US9730570B2 (en) 2012-05-30 2017-08-15 Whirlpool Corporation Reduced sound with a rotating filter for a dishwasher
US9833120B2 (en) 2012-06-01 2017-12-05 Whirlpool Corporation Heating air for drying dishes in a dishwasher using an in-line wash liquid heater
US9451862B2 (en) 2012-06-01 2016-09-27 Whirlpool Corporation Dishwasher with unitary wash module
US9532700B2 (en) 2012-06-01 2017-01-03 Whirlpool Corporation Dishwasher with overflow conduit
US9554688B2 (en) 2012-10-23 2017-01-31 Whirlpool Corporation Rotating filter for a dishwasher and methods of cleaning a rotating filter
WO2015127982A1 (en) * 2014-02-28 2015-09-03 Arcelik Anonim Sirketi Fine filter with improved filtration performance for use in a dishwasher and dishwasher having the same

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AU527001B2 (en) * 1978-12-29 1983-02-10 Hobart International Inc. Warewasher bypass soil collector
FR2558366B1 (fr) * 1984-01-20 1987-04-10 Esswein Sa Lave-vaisselle a microfiltrage de liquide

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Publication number Publication date
ES8701482A1 (es) 1986-12-01
ES546842A0 (es) 1986-12-01
DE3567368D1 (en) 1989-02-16
FR2569973B1 (fr) 1987-06-12
EP0178202A1 (de) 1986-04-16
FR2569973A1 (fr) 1986-03-14

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