EP2543305B1 - Lave-vaisselle - Google Patents

Lave-vaisselle Download PDF

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Publication number
EP2543305B1
EP2543305B1 EP12173072.5A EP12173072A EP2543305B1 EP 2543305 B1 EP2543305 B1 EP 2543305B1 EP 12173072 A EP12173072 A EP 12173072A EP 2543305 B1 EP2543305 B1 EP 2543305B1
Authority
EP
European Patent Office
Prior art keywords
fresh water
dishwasher
water tank
pipeline
container
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.)
Active
Application number
EP12173072.5A
Other languages
German (de)
English (en)
Other versions
EP2543305A1 (fr
Inventor
Anton Oblinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL12173072T priority Critical patent/PL2543305T3/pl
Publication of EP2543305A1 publication Critical patent/EP2543305A1/fr
Application granted granted Critical
Publication of EP2543305B1 publication Critical patent/EP2543305B1/fr
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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
    • A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4291—Recovery arrangements, e.g. for the recovery of energy or water

Definitions

  • the present invention relates to a dishwasher with a fresh water tank. Such dishwashers are used both in the household and in the catering sector use.
  • dishwashers which have a fresh water tank, in which fresh water is kept, which is heated by a heater to a certain temperature and then used for a rinse cycle in a washing container in the dishwasher.
  • a heat exchanger which is thermally conductively connected to the washing container.
  • the DE 10 2008 022890 A1 describes a household appliance that allows reuse of process heat through a flow heat exchanger to save energy.
  • an object of the present invention is to provide a dishwasher, with which the amount of energy necessary for heating the rinse water can be reduced.
  • a dishwasher which has a fresh water tank, which can be filled with fresh water, and a drain pipe for the discharge of waste water from a washing container of the dishwasher, wherein the drain pipe is passed through the fresh water tank.
  • the fresh water can extract heat from the heated wastewater.
  • the drain pipe is designed as a wave pipe and the washing is heat-conducting connected to the fresh water tank.
  • a "fresh water tank” is a container in which unused rinse water, ie rinse water which has not yet been supplied to the rinse tank, is kept in stock.
  • the water supplied to the fresh water tank may contain additional substances such as e.g. Descaling or cleaning agents are added.
  • the drainage pipe can be formed, for example, as a drain hose.
  • a drain hose Under a "hose” is here to understand a flexible line, in particular made of plastic.
  • Such hoses are easy and inexpensive to manufacture and can be easily mounted in the fresh water tank due to their flexibility.
  • the drain pipe is designed as a shaft pipe.
  • a corrugated pipe has a large surface area, which enables rapid heat transfer and high heat exchanger efficiency.
  • the outer diameter of the shaft pipe can be in the troughs, for example, 10-16 mm. At the wave crests, the outer diameter of the shaft pipe, for example, be 18-22 mm.
  • the distance between adjacent wave crests of the wave pipeline may be, for example, 2-5 mm.
  • the drainage pipe can be meandering as a coil through the fresh water tank. This increases the surface area of the drainage pipe in the fresh water tank, allowing for quick heat transfer and higher efficiency of the heat exchanger.
  • the rinse tank is thermally conductive connected to the fresh water tank.
  • the fresh water tank acts as a total heat exchanger and removes heat from the heated rinse water in the washing.
  • the drainage pipe can be designed for the integral connection of a drain pump of the dishwasher with a sanitation facility. In this case, no further pipe sections between the drain pump and the sanitation are to be provided in addition to the drain pipe. Thus, no additional sealing points or coupling pieces must be provided in or on the drainage pipe. Furthermore, thus the drainage pipe can be checked for tightness before installation in the fresh water tank.
  • the drain pipe can be performed on the input side through the bottom of the fresh water tank. Thus, a short distance to the drain pump for pumping out the rinse water from the washing is guaranteed.
  • the drainage pipe can be performed on the input side of a lower part of the fresh water tank substantially perpendicular to an upper part of the fresh water tank.
  • the input side higher pressure is optimally used by the drain pump for pumping out the rinse water from the washing.
  • FIG. 1 is a schematic side view of a dishwasher 1 according to an embodiment shown.
  • the dishwasher 1 comprises a washing container 2 which can be closed watertight by a door 3.
  • the rinsing container 2 and the door 3 thus form a rinsing chamber 4 for rinsing dishes.
  • the washing compartment 2 can be arranged in the interior of a housing 5.
  • the washing container 2 can be made, for example, of stainless steel with a thickness of about 0.4 mm.
  • the door 3 is in Fig. 1 shown in their closed position. By pivoting about a provided at the lower end of the door 3 pivot axis, the door 3 can be opened to the front, and items can be set in the dishwasher 1 or removed therefrom.
  • an operating device 6 and a display device 7 may be provided, which are operatively connected to a control device 8.
  • a control device 8 In the control device 8 more washing programs are stored, which can be selected and started with the aid of the operating device 6.
  • the display device 7 displays status information, e.g. about the selected wash program or the expiration of the same.
  • the dishwasher 1 further comprises an upper dish rack 9 and a lower dish rack 10 into which dishes to be washed can be set.
  • the baskets 9 and 10 may be arranged on extension rails, which are attached to opposite, extending in the depth direction side walls of the washing compartment 2.
  • fresh water FW is used, which can be taken up by a water supply device 11, for example a water supply network, and conducted into the rinsing chamber 4.
  • the fresh water FW is first passed into a fresh water tank 12 and collected.
  • the collected fresh water FW can be introduced as a rinsing liquor via an inlet valve 13 and a water inlet 14 into the rinsing chamber 4.
  • This inlet valve 13 may be formed, for example, as an electrically switchable valve.
  • the flushing water S introduced into the flushing chamber 4 collects in a sump or pot-shaped collecting tank 15 which is provided at the bottom of the flushing tank 2.
  • a circulating pump 16 is provided below the collecting container 15, below the collecting container 15, a circulating pump 16 is provided. On the input side, the circulation pump 16 is connected to the collecting container 15, and on the output side, the circulation pump 16 is connected to a spraying device.
  • the spraying device comprises an upper rotatable spray arm 17 and a lower rotatable spray arm 18.
  • the circulating pump 16 is switched on, the rinsing water S enters the spray arms 17 and 18 and is expelled therefrom.
  • the spray arms 17 and 18 are set in rotation and the rinse water S is distributed in the washing chamber 4 and on the dishes provided therein. Subsequently, the rinse water S flows back into the collecting container 15th
  • the circulation pump 16 is turned off, and the collected in the sump 15 rinse water is pumped as waste AW by means of a drain pump 19.
  • the sewage AW is pumped from the drain pump 19 via a drain pipe 20 to a sanitation facility 21.
  • the sanitation device 21 may be, for example, a sewer pipe of a building-side water installation.
  • Fig. 2 schematically shows a side view of the fresh water tank 12 and an exemplary course of the drainage pipe 20 through the fresh water tank 12.
  • the fresh water tank 12 may be, for example cuboid, with a height of about 50 cm, a width of about 50 cm and a depth of about 3 cm.
  • the fresh water tank 12 may be made of plastic, such as polypropylene, or made of metal.
  • Fresh water FW is passed through an upper opening 22 in the fresh water tank 12 and can be supplied through a lower opening 23 via the valve 13 to the washing compartment 2.
  • the drainage pipe 20 runs from the drain pump 19 initially to a location below the fresh water tank 12, enters the bottom (or a lower wall) 26 of the fresh water tank 12 in this, is meandering through the fresh water tank 12 out, at the bottom 26 of the fresh water tank 12 again comes out of this, and is connected through an opening in the housing 5 with the sanitation 21.
  • the fresh water FW collected in the fresh water tank 12 typically has a temperature of 5 ° to 25 ° C. This can be heated by a heater, not shown, depending on the washing program to a temperature of for example 50 to 75 ° C.
  • the heater can also be mounted in the fresh water tank 12. Accordingly, the wastewater AW guided through the drainage pipe 20 also has a temperature of, for example, 50 ° to 75 ° C.
  • the effluent AW guided in the drainage pipe 20 through the fresh water tank 12 heats the fresh water FW kept ready in the fresh water tank 12 for the next rinse cycle, so that the fresh water tank 12 acts as a heat exchanger.
  • the heater for heating the fresh water FW can be operated at a lower power, so that energy can be saved.
  • the drainage pipe 20 rises in the fresh water tank 12 on the input side substantially perpendicularly (for example, at an angle less than 20 ° to the vertical) from the bottom, ie from a lower part of the fresh water tank 12, to near the ceiling, so an upper part of the fresh water tank 12.
  • the input side higher pressure is optimally used by the drain pump 19 in the wastewater AW.
  • the drainage pipe 20 is meandering in several loops back down toward the bottom 26 of the fresh water tank 12 out.
  • an increase in the area of the drainage pipe 20 is achieved, which causes a higher efficiency of the heat exchanger.
  • the drainage pipe 20 can by several, in the representation of Fig.
  • clips 24 are fixed to a wall of the fresh water tank 12.
  • the drain pipe 20 may also be passed through the fresh water tank 12 in another way.
  • the drainage pipe 20 may be guided meandering from the bottom to the ceiling of the fresh water tank 12.
  • the drain pipe 20 is formed as a corrugated hose. Under a corrugated tube in this case is to be understood a tube whose wall has a waveform. In this way, an enlargement of the Surface of the drain pipe 20 is reached, which causes a rapid heat transfer and a higher efficiency of the heat exchanger.
  • the wave period may be, for example, 2 to 5 mm. A wave period of about 3 mm is preferred.
  • the outer diameter of the drainage pipe 20 may be, for example, 10 to 16 mm, preferably 12 to 14 mm.
  • the outer diameter of the drainage pipe 20 may be for example 16 to 24 mm, preferably 18 to 22 mm.
  • the wall thickness of the drainage pipe 20 is not thicker than 1 mm, and preferably not thicker than 0.5 mm. With such a thin wall thickness, rapid heat transfer and high efficiency of the heat exchanger can be effected.
  • Such a corrugated hose can be inexpensively made of plastic, e.g. Polypropylene or the like.
  • plastic e.g. Polypropylene or the like.
  • an inexpensive production by extrusion with the aid of a corrugator is possible, which allows easy adjustment of the waveform and the wall thickness.
  • metal e.g. Aluminum or copper.
  • With a metallic material good heat exchanger properties can be achieved.
  • Plastic is not only chemically resistant to the pumped lye, but also inexpensive to manufacture.
  • a plastic corrugated hose can be easily mounted as a drain pipe 20 due to its high flexibility.
  • the drain pipe 20 is integrally formed.
  • a continuous corrugated hose is provided as a drain pipe 20 between the drain pump 19 and the sanitation 21.
  • no additional sealing or coupling pieces in the drainage pipe 20 must be provided.
  • the drainage pipe 20 can be checked for tightness before installation in the fresh water tank 12.
  • the side wall 25 of the fresh water container 12 facing away from the housing 5 can be in a substantially planar connection with the rear wall of the washing container 2, or with a thin layer of bitumen or the like, for example 2 mm thick be fixed on this.
  • Such a heat-conducting connection between rinsing tank 2 and fresh water tank 12 causes the heating of the rinse tank 2 by the rinsing water S is also used for heat exchange and the fresh water FW heated in the fresh water tank 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Lave-vaisselle (1) avec un compartiment d'eau douce (12) destiné à la réception d'eau douce (FW), et une conduite d'évacuation (20) pour l'écoulement d'eau usée réchauffée (AW) hors du compartiment de lavage (2) du lave-vaisselle (1), cette conduite d'évacuation (20) étant guidée à travers le compartiment d'eau douce (12), et l'eau douce (FW) pouvant prélever de la chaleur de l'eau usée réchauffée (AW), caractérisé en ce que la conduite d'évacuation (20) est réalisée comme une conduite ondulée et en ce que le compartiment de lavage (2) est raccordé à conduction thermique avec le compartiment d'eau douce (12).
  2. Lave-vaisselle (1) selon la revendication 1, caractérisé en ce que la conduite d'évacuation (20) est réalisée comme un tuyau d'évacuation.
  3. Lave-vaisselle (1) selon la revendication 1 ou 2, caractérisé en ce que le diamètre extérieur de la conduite ondulée est situé entre 10 et 16 mm dans les creux d'onde.
  4. Lave-vaisselle (1) selon l'une des revendications 1 à 3, caractérisé en ce que le diamètre extérieur de la conduite ondulée est situé entre 18 et 22 mm aux sommets.
  5. Lave-vaisselle (1) selon l'une des revendications 1 à 4, caractérisé en ce que la distance entre les sommets d'onde voisins de la conduite ondulée est située entre 2 et 5 mm.
  6. Lave-vaisselle (1) selon l'une des revendications 1 à 5, caractérisé en ce que l'épaisseur de paroi de la conduite ondulée est inférieure à 1 mm.
  7. Lave-vaisselle (1) selon l'une des revendications 1 à 6, caractérisé en ce que la conduite d'évacuation (20) est guidée à la ressemblance d'un serpent tubulaire en méandres à travers le compartiment d'eau douce (12).
  8. Lave-vaisselle (1) selon l'une des revendications 1 à 7, caractérisé en ce que la conduite d'évacuation (20) pour le raccord monobloc d'une pompe à lessive (19) du lave-vaisselle (1) est réalisée avec dispositif d'élimination des eaux usées (21).
  9. Lave-vaisselle (1) selon l'une des revendications 1 à 8, caractérisé en ce que la conduite d'évacuation (20) est guidée côté entrée à travers le sol (26) du compartiment d'eau douce (12).
  10. Lave-vaisselle (1) selon l'une des revendications 1 à 9, caractérisé en ce que la conduite d'évacuation (20) est guidée côté entrée depuis une partie inférieure du compartiment d'eau douce (12) essentiellement à la verticale d'une partie supérieure du compartiment d'eau douce (12).
EP12173072.5A 2011-07-06 2012-06-22 Lave-vaisselle Active EP2543305B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12173072T PL2543305T3 (pl) 2011-07-06 2012-06-22 Zmywarka do naczyń

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011078730A DE102011078730A1 (de) 2011-07-06 2011-07-06 Geschirrspülmaschine

Publications (2)

Publication Number Publication Date
EP2543305A1 EP2543305A1 (fr) 2013-01-09
EP2543305B1 true EP2543305B1 (fr) 2019-04-17

Family

ID=46465044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12173072.5A Active EP2543305B1 (fr) 2011-07-06 2012-06-22 Lave-vaisselle

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Country Link
EP (1) EP2543305B1 (fr)
DE (1) DE102011078730A1 (fr)
PL (1) PL2543305T3 (fr)
TR (1) TR201907606T4 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013213972B4 (de) * 2013-07-17 2015-07-16 BSH Hausgeräte GmbH Geschirrspülmaschine mit einem in einem Wasserbehälter integrierten Abflussrohrleitungsabschnitt sowie zugehöriges Verfahren
DE102013213969B4 (de) * 2013-07-17 2015-07-09 BSH Hausgeräte GmbH Geschirrspülmaschine mit einem in einem Wasserbehälter integrierten Abflussrohrleitungsabschnitt sowie zugehöriges Verfahren zum Betreiben der Geschirrspülmaschine
DE102013213970B4 (de) * 2013-07-17 2017-03-09 BSH Hausgeräte GmbH Geschirrspülmaschine mit einem in einem Wasserbehälter integrierten Abflussrohrleitungsabschnitt sowie zugehöriges Verfahren
DE102014104369B4 (de) 2014-03-28 2021-09-30 Miele & Cie. Kg Verfahren zur Rückgewinnung von Energie aus der Wärme von Spülflotte
DE102014104376B4 (de) 2014-03-28 2016-04-14 Miele & Cie. Kg Spülmaschine mit Frischwasserbehälter
DE102014104373A1 (de) 2014-03-28 2015-10-01 Miele & Cie. Kg Geschirrspülmaschine
DE102014104409A1 (de) 2014-03-28 2015-10-01 Miele & Cie. Kg Verfahren zur Rückgewinnung von Energie aus der Wärme von Spülflotte
DE102015116248B3 (de) * 2015-09-25 2016-09-22 Miele & Cie. Kg Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine
EP3146883B1 (fr) 2015-09-25 2017-10-18 Miele & Cie. KG Lave-vaisselle, notamment lave-vaisselle ménager
EP3146882B1 (fr) 2015-09-25 2018-06-06 Miele & Cie. KG Lave-vaisselle, notamment lave-vaisselle ménager
DE102016117240A1 (de) 2015-09-25 2017-03-30 Miele & Cie. Kg Geschirrspülmaschine, insbesondere Haushaltsgeschirrspülmaschine
DE102015116553B3 (de) * 2015-09-30 2017-01-19 Miele & Cie. Kg Verfahren zum Betrieb eines Wärmetauschers einer Geschirrspülmaschine
EP3777638B1 (fr) * 2019-07-11 2024-02-14 Miele & Cie. KG Lave-vaisselle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010450A1 (de) * 1980-03-19 1981-09-24 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Rohr fuer waermetauscherzwecke, insbesondere fuer verdampfer
DE3722520A1 (de) * 1987-07-08 1989-01-19 Witzenmann Metallschlauchfab Waermeaustauschelement in form eines wellschlauches

Family Cites Families (9)

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DE1821718U (de) * 1960-07-02 1960-11-17 Heinz Mueller Vorrichtung bei waschmaschinen bzw. waschautomaten zum vorwaermen des spuelwassers.
DE3021746C2 (de) 1980-06-10 1982-12-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zum Spülen von Geschirr in einer Haushalt-Geschirrspülmaschine sowie derartige Maschine zur Durchführung des Verfahrens
DE3900617A1 (de) 1989-01-11 1990-07-12 Licentia Gmbh Verfahren und vorrichtung zur waermerueckgewinnung
DE29817604U1 (de) * 1998-10-02 1998-12-24 GM Etscheid Anlagen GmbH, 53577 Neustadt Tauchkühler, insbesondere zur Kühlung von Flüssigkeiten wie Wein und Most in Fässern
DE29915788U1 (de) * 1999-09-08 1999-12-23 Kulbach, Egon, 65549 Limburg Energie-Spülmaschine
ITTO20010291A1 (it) 2001-03-28 2002-09-28 Bitron Spa Macchina lavastoviglie comprendente un dispositivo di condensazione aridotto consumo energetico.
DE20319711U1 (de) * 2003-12-19 2004-04-01 Electrolux Home Products Corp. N.V. Geschirrspülmaschine
EP2150166A1 (fr) * 2007-05-11 2010-02-10 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Appareil électroménager, notamment lave-vaisselle doté d'un échangeur thermique
AT507447A3 (de) * 2008-10-14 2010-09-15 Klaus Dipl Ing Dr Unterweger Verfahren zur energierückgewinnung in waschgeräten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010450A1 (de) * 1980-03-19 1981-09-24 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Rohr fuer waermetauscherzwecke, insbesondere fuer verdampfer
DE3722520A1 (de) * 1987-07-08 1989-01-19 Witzenmann Metallschlauchfab Waermeaustauschelement in form eines wellschlauches

Also Published As

Publication number Publication date
DE102011078730A1 (de) 2013-01-10
EP2543305A1 (fr) 2013-01-09
PL2543305T3 (pl) 2019-10-31
TR201907606T4 (tr) 2019-06-21

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