EP3473155A1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

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Publication number
EP3473155A1
EP3473155A1 EP18187173.2A EP18187173A EP3473155A1 EP 3473155 A1 EP3473155 A1 EP 3473155A1 EP 18187173 A EP18187173 A EP 18187173A EP 3473155 A1 EP3473155 A1 EP 3473155A1
Authority
EP
European Patent Office
Prior art keywords
fresh water
dishwasher
collecting pot
circulating pump
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18187173.2A
Other languages
German (de)
English (en)
Other versions
EP3473155B1 (fr
Inventor
Carcus Kara
Holger Rohde
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL18187173T priority Critical patent/PL3473155T3/pl
Publication of EP3473155A1 publication Critical patent/EP3473155A1/fr
Application granted granted Critical
Publication of EP3473155B1 publication Critical patent/EP3473155B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps

Definitions

  • the invention relates to a dishwasher, in particular a domestic dishwasher, with a washing compartment for receiving items to be provided Spül necessarilyer, a collecting pot into which opens the washing, a circulating pump and a drain pump, which are each connected fluidically to the collecting pot, wherein the circulating pump under fluidic Interposition of a suction nozzle providing a pipe socket is connected to the collecting pot, as well as with a fresh water inlet. Furthermore, the invention relates to a method for introducing fresh water into a dishwasher, in which the fresh water of the dishwasher is supplied from a fresh water discharge point.
  • Dishwashers of the type mentioned are well known from the prior art, which is why it does not require a separate documentary evidence at this point.
  • Previously known dishwashers have a washing container which provides a washing compartment. This is the user side accessible via a feed opening, which is fluid-tightly closed by means of a pivotally mounted washroom door.
  • the washing container serves to receive items to be cleaned, which may be dishes, cutlery pieces and / or the like, for example.
  • the dishwasher For loading of items to be cleaned with rinsing liquid, the so-called. Rinse liquor, the dishwasher has a spray in the interior of the washing container.
  • This spraying device typically provides rotatably mounted spray arms, wherein usually two or three such spray arms are provided. In the intended use case, a loading of the items to be cleaned with rinse liquor by means of rotating spray arms.
  • the dispensed by the spray in the operating case rinse liquor hits the items to be cleaned and then accumulates in a collecting pot, in the Flushing container opens.
  • the collecting pot is connected to a circulating pump on the one hand and to a drain pump on the other hand.
  • the circulating pump which circulates the rinsing liquid conveyed into the dishwasher in the intended use case, serves to pressurize the spraying device with rinsing solution. With the completion of a wash program, the wash liquor is pumped out by means of the drain pump and discarded.
  • the dishwasher is supplied with fresh water from a fresh water delivery point.
  • the collecting pot of the dishwasher has for this purpose a fresh water inlet, which is fluidically connected to the fresh water discharge point, for example by means of a hose. Once the collecting pot is filled with sufficient fresh water for proper operation of the circulation pump, the circulation pump is put into operation, as a result of which the spray arms of the spraying device are charged with washing liquor.
  • the residual rinsing liquor in the dishwasher is not only merely mixed with the fresh water, but a substantial expulsion of the residual rinsing liquor by displacement occurs. It can be achieved with relatively little fresh water, a nearly complete disposal of Rest Suiteflotte, so that in a subsequent washing program largely no lye and / or chloride residues are abducted.
  • a dishwashing machine of the type mentioned is proposed with the invention, which is characterized in that the fresh water inlet suction mouth side of the circulating pump is formed.
  • the fresh water of a circulation pump of the dishwasher is placed on the suction mouth side and pumped from there by means of the circulation pump in a flow-connected to the circulation pump collecting pot, one of the collecting pot fluidly connected drain pump at least temporarily operated at the same time to the circulation pump and in Collecting pot accumulating mixed water is pumped out of fresh and residual water.
  • the suction-side connection to the circulating pump is formed in the region of the suction mouth of the circulating pump, that is to say on the suction mouth side.
  • the "suction-mouth-side" design of the fresh-water inlet in the sense of the invention means that, in the normal operation, a fresh-water inlet is completely or almost completely directly into the circulation pump, i. without the incoming fresh water or at least the essential portion of the incoming fresh water previously reaches other areas of the collecting pot.
  • a suction-suction-side design in this sense is present, in particular, when the fresh-water inlet is formed within the fluidic connection between the collecting pot and the circulating pump.
  • the embodiment of the invention allows a complete flushing of the liquor and / or chloride route, i. the circulating pump, the collecting pot and of the circulating pump via the collecting pot leading to the drain pump line path, so that there located residual fluids can be largely expelled, so that no unwanted leaching and / or Chloridverschleppung takes place in a subsequent washing program.
  • the circulating pump is supplied with fresh water via the suction side, wherein a flushing does not take place without pumpling, but rather takes place during pump operation.
  • the embodiment of the invention is compared to the prior art construction according to the EP 2 759 244 B1 especially with regard to two aspects of advantage.
  • the machine-side construction costs are reduced. It is only needed a fresh water inlet, which is formed according to the invention suction mouth side of the circulation pump. About this fresh water inlet is a supply of fresh water both in Spülprogrammfall and for the purpose of flushing by the method according to the invention instead. In this respect, no additional conduction paths including appropriate locking and / or actuators are needed. It is such an overall simplified design of the dishwasher achieves what the manufacturing simplified and reduced.
  • the flushing achieved with the method according to the invention is more effective in the result. Because the invention provided pump driven flushing requires that the suction mouth side introduced into the circulation pump fresh water is first pumped through one of the spray arms of the spray in the washroom, from where it flows into the washing, from which it can then be pumped.
  • the paths to the spraying device, parts of the washing container and, in particular, the mouth region of the washing container are therefore also included in the collecting pot, which results in an improved overall cleaning result.
  • the collecting pot is in contrast to the embodiment according to the prior art is not applied via a lateral access with fresh water, but with the interposition of the washing container from above. This leads advantageously to the fact that due to the density differences between fresh water and residual water over the prior art increased displacement of residual water results from the introduced fresh water. This, too, contributes overall to an improved process result.
  • the introduced fresh water is sucked in when the circulating pump and spent on the pressure side of the circulation pump, where it passes into corresponding supply lines to the spray.
  • a feed of the lower spray arm of the spraying device with fresh water is preferred.
  • the spray of the spray in particular the lower spray arm of the spraying abandoned fresh water accumulates on the bottom side of the washing and flows into the flow pot connected to the washing tank collecting pot.
  • the spray of the spray in particular the lower spray arm of the spraying abandoned fresh water accumulates on the bottom side of the washing and flows into the flow pot connected to the washing tank collecting pot.
  • the drain pump is turned on, so that can take place with or at the latest with the promotion of the circulating pump of fresh water pumped into the collecting pot pumping out of the lye and / or chloride contaminated residual water.
  • the pipe socket connected in the fluidic connection between the circulation pump and collecting pot has the fresh water inlet.
  • the fresh water inlet can be formed as formed on the pipe socket connection piece on which the line is attached to the fresh water supply.
  • an opening into the collecting pot bypass line to the pipe socket is provided according to a further feature of the invention.
  • This bypass line is used to equalize the pressure during the intended implementation of a washing program.
  • the dishwasher is supplied in a conventional manner via the fresh water inlet fresh water.
  • the circulating pump is put into operation, as a result of which a fresh water circulation within the dishwasher takes place as intended.
  • a circulation operation it comes on the suction side of the circulation pump to form a negative pressure.
  • the fresh water inlet according to the invention is formed suction mouth side of the circulation pump, such a negative pressure training causes the circulation pump draws air from the fresh water supply line. This interferes with the proper operation of the circulation pump and should therefore be avoided. Therefore, according to the invention, a bypass line connected to the collecting pot is provided. In the vacuum case so is a suction of air from the fresh water supply line avoided.
  • a fresh water line for connection to a fresh water discharge point is provided which is connected on the machine side to a first supply line and to a second supply line, wherein the first supply line opens into the fresh water inlet and the second supply line forms the bypass line.
  • a dividing into two supply lines fresh water line is provided, wherein the one suction line suction port side connected to the circulation pump and the other supply line to the collecting pot.
  • the two supply lines are connected according to a further feature of the invention under fluidic interposition of a Y-piece or branch piece to the fresh water line.
  • the second supply line that is, the bypass line forms a kind of pipe bend in the manner of a siphon, whereby the desired functionality of the bypass line is ensured safe.
  • the fresh water inlet opens into a chamber provided by the collecting pot, which is formed fresh water inlet side of the pipe socket.
  • the collecting pot fluidly connected to the circulation pump pipe socket is not equipped with a connection piece for the connection of the fresh water line, but it is rather provided provided by a collecting pot chamber which opens fluidly into the pipe socket.
  • a feed of the pipe socket with fresh water with the interposition of the collecting pot side chamber takes place according to this embodiment, a suction mouth side of the circulation pump provided fresh water inlet is given, which ensures that a fresh water inlet takes place directly in the circulation pump without the incoming fresh water flows into other areas of the collecting pot.
  • the alternative chamber design has the advantage that it needs to reduce a negative pressure in the normal operation of the circulation pump no additional bypass line. Because the opening into the pipe socket chamber is Sammeltopf device at least partially open, so that in normal operation, a pressure compensation can take place.
  • the method side is further proposed that the circulating pump discontinued fresh water is fed to the collecting pot under fluidic interposition of a spray arm of the dishwasher.
  • a spray arm of the dishwasher is preferably the lower spray arm, so that unwanted wetting of items located in the washing container with fresh water is avoided.
  • the fluidic interposition of the spray arm provided according to the method implementation according to the invention has the advantage that, in contrast to the prior art, lye and / or chloride residues adhering to the collecting pot in the confluence area of the washing container can be removed.
  • the method side is further provided that the circulation pump is operated at an idle speed. It is, however, preferred to select the speed of the circulation pump as low as possible, for example, characterized in that the circulation pump is operated in the left-hand rotation and / or that the idle speed is selected as the speed.
  • the operation of the circulation pump with the lowest possible speed provides the advantage that the circulating pump discontinued fresh water is promoted with the least possible pressure in the washing, which minimizes the risk that it comes to wetting the dishes located in the washing with fresh water.
  • Fig. 1 can be seen in a purely schematic representation of a dishwasher 1 according to the invention.
  • the dishwasher 1 has a housing 2, which accommodates, inter alia, a washing container 3.
  • the washing container 3 in turn provides a washing compartment 4, which serves in the intended use of the inclusion of items to be cleaned.
  • a spray device 5 For loading of items to be cleaned with rinse liquor is a spray device 5, which is arranged within the washing container 3.
  • a spraying device 5 has spray arms 6 and 7, which are each arranged rotatable within the washing container 3.
  • the spray device 5 has an upper spray arm 6 and a lower spray arm 7.
  • a generic dishwasher has three spray arms, namely an upper and a lower spray arm and a central spray arm.
  • the rinsing container 3 is accessible to the user via a feed opening 8 which can be closed in a fluid-tight manner by means of a pivotally mounted dishwashing door 9.
  • the washing compartment 3 or the washing compartment 4 provided by the washing compartment 3 opens into a detail in FIG FIGS. 1 and 2 a collection pot 10 not shown.
  • a circulating pump 11 and a drain pump 12 are respectively fluidically connected.
  • a fluidic connection 15 and between the drain pump 12 and the collecting pot 10 are formed between the circulating pump 11 and the collecting pot 10.
  • the circulation pump 11 is fluidly connected via corresponding supply lines 16 and 17 to the spray arms 6 and 7 of the spraying device 5, the supply line 16 leading from the circulation pump 11 to a lower spray arm 7 and the supply line 17 from the circulation pump 11 to an upper spray arm 6.
  • at least one further spraying element not shown here, in particular a middle spraying arm may be present in a manner known per se, which may be connected to the circulating pump 11 via a separate supply line.
  • the spent wash liquor is pumped out by means of the drain pump 12, for which purpose the drain pump 12 is connected to a line 14, which typically opens into the public sewerage system and is discharged via the wash liquor consumed in correspondence with the arrow 18.
  • Fig. 2 lets recognize the further structure of the dishwasher 1 according to the invention.
  • a fresh water delivery point 26 is provided, which may for example be an access to the public water network, even with the interposition of a machine-side water tank and / or the like. It is crucial that a supply of fresh water via the fresh water discharge point 26 takes place with the interposition of the fresh water line 21.
  • a check valve 22 and a fresh water softening device 24 are further provided in the embodiment shown. In the intended use case, therefore fresh water flows from the fresh water discharge point 26 via the line 25 to Frischwasserenthärtungs Rhein 24 and from there via the line 23 to the valve 22, which separates the line 23 from the fresh water line 21.
  • the check valve 22 is opened so that about the above-described line fresh water can get into the fresh water line 21.
  • the fresh water line 21 is divided into a first feed line 28 and a second feed line, which constitutes a bypass line 27 described in more detail below.
  • the first supply line 28 opens into the fluidic connection 15 between collecting pot 10 and circulating pump 11, that is, the fresh water inlet 20 is suction mouth side of the circulating pump 11 is formed. In normal operation, therefore, there is a direct admission of the circulating pump 11 with fresh water via the fresh water line 21 or the first supply line 28 connected to the fresh water line 21.
  • the circulating pump 11 is supplied with fresh water via the supply line 28. Once sufficient fresh water has been supplied, the circulation pump 11 is put into operation and there is a circulation of the fresh water supplied, the circulation pump 11 via the supply line 17, in particular selectively or alternately, either the upper spray arm 6 or the supply line 16 the lower Sprüharm 7 supplied with fresh water.
  • a third, in particular middle, spray arm can additionally be supplied with fresh water via a further supply line.
  • the guided in this way in the washing tank 3 fresh water is a Spülgutgenesis and collects as a rinsing liquor in the collection pot 10, from where the rinse liquor is then passed through the fluidic connection 15 again to the circulation pump 11 and is kept in circulation.
  • rinsing program After expiration of a properly carried out rinsing program are in particular in the collecting pot 10 and in the housing of the circulating pump 11 lye and chloride residues, which must be removed in order to avoid carryover to a subsequent program step and / or a subsequent wash program. According to the invention it is therefore provided that a rinsing takes place, whereby the lye and / or chloride route is cleaned, that is, in particular the collecting pot 10 and the housing of the pumps 11 and 12 are freed of lye and / or chloride residues.
  • the flushing according to the invention provides that the dishwasher 1 in already fresh water from a fresh water discharge point 26 is supplied as described above.
  • the fresh water of the circulation pump 11 is abandoned suction mouth side and pumped from there by means of the circulation pump 11 in the flow-technically connected to the circulation pump 11 collecting pot 10.
  • the flow-connected to the collecting pot 10 drain pump 12 is operated at least temporarily at the same time to the circulation pump 11, so that in the collecting pot 10 accumulating mixed water is pumped out of fresh and residual water.
  • Such flushing is carried out with a fresh water amount of, for example, 150 ml.
  • a fresh water amount of, for example, 150 ml.
  • Such a small amount of water is already sufficient to liberate the alkali and / or chloride as far as possible from unwanted alkali and / or chloride residues.
  • it can also be rinsed with more fresh water and / or the flushing step can be repeated several times, for example five times, which leads to a total fresh water consumption of 750 ml at 150 ml per flush.
  • One particular advantage of the process implementation according to the invention is, inter alia, that only a charge of the liquor and / or chloride route to be purified takes place.
  • This has the advantage that there is virtually no heat leakage from the dishwasher 1, so that less energy is needed to reheat rinse liquor in subsequent rinse program steps.
  • the method according to the invention makes it possible to completely dispense with a conventional rinsing program step of intermediate rinsing, but nevertheless to ensure that undesired alkali and / or chloride residues are removed and are not carried off into a subsequent rinsing program step and / or a subsequent rinsing program.
  • FIGS. 3 and 4 show in each case different perspective views of the collection pot 10 of the dishwasher 1 according to the invention according to a first embodiment.
  • the collection pot 10 provides a pipe socket 29. At this pipe socket 29, the circulation pump 11 is connected to the suction side.
  • the pipe socket 29 is therefore part of fluidic connection 15 between collecting pot 10 and circulating pump 11th
  • the pipe socket 29 is equipped with a connecting piece 34. At these, the first supply line 28 is connected, in which the fresh water line 21 opens.
  • the circulation pump 11 can be given fresh water mouth side fresh water by fresh water via the lines 21 and 28 and the connecting piece 34 in the serving as a suction port 30 pipe socket 29 passes.
  • the collecting pot 10 is equipped with a further connecting piece 33.
  • connection piece 33 serving as a second connecting line bypass line 27 is connected, in which also the fresh water line 21 opens.
  • the fresh water line 21, the first supply line 28 and the bypass line 27 via a common Y-piece or branch piece 35 are fluidly coupled together.
  • the collecting pot 10 furthermore has a connection stub 31 opening into a pipe stub, to which the supply line 16 to the lower spraying arm 7 is connected.
  • Another connection piece 32 serves for the fluidic connection of the collecting pot 10 to drain pump 12.
  • FIGS. 5 to 7 Another embodiment of the collecting pot 10 let the FIGS. 5 to 7 recognize in different views.
  • a connecting piece 34 is provided for connecting the fresh water line 21, which opens into a collecting pot side chamber 36.
  • the chamber 36 in turn is in fluid communication with the pipe socket 29, as shown in particular the illustration Fig. 6 lets recognize.
  • Sammeltopf lake the chamber 36 is formed closed by a cover 37. How this particular the Fig. 5 reveals the chamber 36 opens into the pipe socket 29 and thus the suction mouth side of the
  • Circulation pump 11 a Circulation pump 11 a.
  • the advantage of the second embodiment according to the FIGS. 5 to 7 in particular lies in the fact that due to the chamber design can be dispensed with a bypass line 27.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
EP18187173.2A 2017-10-18 2018-08-03 Lave-vaisselle Active EP3473155B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18187173T PL3473155T3 (pl) 2017-10-18 2018-08-03 Zmywarka do naczyń

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017124259 2017-10-18
DE102017124254 2017-10-18

Publications (2)

Publication Number Publication Date
EP3473155A1 true EP3473155A1 (fr) 2019-04-24
EP3473155B1 EP3473155B1 (fr) 2022-03-30

Family

ID=63144850

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18187173.2A Active EP3473155B1 (fr) 2017-10-18 2018-08-03 Lave-vaisselle
EP18187175.7A Active EP3473156B1 (fr) 2017-10-18 2018-08-03 Lave-vaisselle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18187175.7A Active EP3473156B1 (fr) 2017-10-18 2018-08-03 Lave-vaisselle

Country Status (3)

Country Link
EP (2) EP3473155B1 (fr)
ES (2) ES2912124T3 (fr)
PL (2) PL3473156T3 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848929A1 (fr) * 1996-12-20 1998-06-24 Premark International Holdings B.V. Dispositif de distribution d'eau pour lave-vaisselle
WO2009068391A1 (fr) * 2007-11-27 2009-06-04 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour régler un cycle de rinçage dans un appareil ménager à circulation d'eau
EP2759244B1 (fr) 2013-01-29 2015-12-16 Miele & Cie. KG Lave-vaisselle et procédé d'alimentation en eau douce d'un lave-vaisselle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080142056A1 (en) * 2006-12-15 2008-06-19 John Edward Dries Fluid Coupling Assembly for a Dishwasher
US9986885B2 (en) * 2015-12-17 2018-06-05 Whirlpool Corporation Dish treating appliance with self-draining feedtube
WO2017114558A1 (fr) * 2015-12-29 2017-07-06 Arcelik Anonim Sirketi Lave-vaisselle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848929A1 (fr) * 1996-12-20 1998-06-24 Premark International Holdings B.V. Dispositif de distribution d'eau pour lave-vaisselle
WO2009068391A1 (fr) * 2007-11-27 2009-06-04 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour régler un cycle de rinçage dans un appareil ménager à circulation d'eau
EP2759244B1 (fr) 2013-01-29 2015-12-16 Miele & Cie. KG Lave-vaisselle et procédé d'alimentation en eau douce d'un lave-vaisselle

Also Published As

Publication number Publication date
EP3473155B1 (fr) 2022-03-30
PL3473155T3 (pl) 2022-06-20
ES2910123T3 (es) 2022-05-11
EP3473156B1 (fr) 2022-04-20
EP3473156A1 (fr) 2019-04-24
PL3473156T3 (pl) 2022-06-27
ES2912124T3 (es) 2022-05-24

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