US20110083699A1 - Method for operating a water-conducting domestic appliance - Google Patents

Method for operating a water-conducting domestic appliance Download PDF

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Publication number
US20110083699A1
US20110083699A1 US12/995,673 US99567309A US2011083699A1 US 20110083699 A1 US20110083699 A1 US 20110083699A1 US 99567309 A US99567309 A US 99567309A US 2011083699 A1 US2011083699 A1 US 2011083699A1
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US
United States
Prior art keywords
liquid
amount
partial program
tub
program step
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.)
Abandoned
Application number
US12/995,673
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English (en)
Inventor
Michael Georg Rosenbauer
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Assigned to BSH BOSCH UND SIEMENS HAUSGERAETE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERAETE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROSENBAUER, MICHAEL GEORG
Publication of US20110083699A1 publication Critical patent/US20110083699A1/en
Abandoned legal-status Critical Current

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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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047—Energy or water consumption, e.g. by saving energy or water
    • 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
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/02—Pressurised cleaning liquid delivered by a pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention relates to a method for operating a water-conducting domestic appliance.
  • a household dishwasher in which for the cleaning of items to be washed a washing program having a multiplicity of program steps is performed, which has at least two partial program steps, during which washing liquor, for example water mixed with detergent or rinse aid, is heated, where the dishwasher has at least one tub for accommodating items to be washed and a liquid reservoir in heat-conducting contact with the tub. It here permits the liquid reservoir in thermal contact with the tub to heat water, for example prior to its use in a washing step. This can take place by means of a temperature difference relative to the environment of the dishwasher and/or through the waste heat of the washing liquor circulated in the treatment compartment. An energy saving can thereby be achieved.
  • the object of the invention is to specify a method with which the energy consumption can be further reduced.
  • the inventive method for operation of a dishwasher has at least the following steps:
  • the inventive method thus allows regaining of the use of heat energy of liquids, in particular of heated liquids, which is otherwise lost upon being pumped out into a domestic wastewater disposal system.
  • the circulated amount of liquid to be heated at least for a time in the further partial program step, so that temperatures can also be achieved which could not be attained only through the use of recovered heat energy. It can however also be provided for heating to be dispensed with in the further partial program step, and instead to use recovered heat energy to heat liquid.
  • the circulated amount of liquid only to be heated to a temperature equal to or below the temperature of the liquid stored in the liquid reservoir, so that no unnecessary energy need be applied to heat the liquid stored in the liquid reservoir.
  • liquid reservoir and the tub are emptied simultaneously, while in a second, alternative embodiment, it is provided for the tub to be emptied first, followed then by the liquid reservoir.
  • the partial program steps preferably comprise at least one cleaning step and one rinsing step, where during both partial program steps liquids are heated in each case.
  • detergent is here added and the circulated liquid or washing liquor heated to, for example, up to 65° C.
  • wetting agents are added, which are in particular intended to ensure a smear-free drying process for the items to be washed, where temperatures of for example 70° C. are reached in this step.
  • At least one third partial program step without the heating of liquid can further preferably be provided for between the two partial program steps.
  • This can here preferably take the form of an intermediate rinse step, which serves to remove residues of liquid or washing liquor mixed with detergent remaining in the tub and the pump system of the dishwasher, in order to ensure that detergent residues and wetting agent added in the rinsing step do not have mutually negative effects.
  • pre-rinse steps without heating of liquid are provided, in which liquid stored in the liquid reservoir is used.
  • the pre-rinse serves to remove heavy soiling from items to be washed.
  • the invention further includes a dishwasher, which is embodied for execution of the inventive method.
  • FIG. 1 shows a schematic representation of a dishwasher for execution of the inventive method:
  • the dishwasher 2 has a tub 6 to accommodate items to be washed (not shown), which for example can be placed in extendably mounted crockery baskets (not shown).
  • a spray arm 8 is provided in the tub in the present exemplary embodiment.
  • a multiplicity of spray arms can however be provided.
  • a circulation pump 10 is provided to supply the spray arms 8 with washing liquor, which is connected in a liquid-conducting manner with a sump arranged in the base area of the tub 6 , in which the washing liquor dripping off the items to be washed is collected.
  • a motor 12 is provided to drive the circulation pump 10 , which is connected to a control device 14 of the dishwasher 2 .
  • a heating element (not shown) can be provided to heat the circulated washing liquor.
  • a liquid reservoir 4 in heat-conducting contact with the tub 6 is provided, in which an amount of liquid can be temporarily stored.
  • a drainage line 24 is provided in the tub 6 for emptying the liquid reservoir 4 , which can be opened and closed by means of a drain valve 18 , where the drain valve 18 is connected with the control device 14 via a control line 16 .
  • a return line 26 is provided, with which it is possible to convey washing liquor from the tub 6 back into the liquid reservoir 4 .
  • a return valve 20 is provided for the opening and closing of the return line 26 , which is likewise connected to the control device 14 via a control line 18 . Further valves can in addition be provided, to block an inlet line to the spray arm 8 in the tub 6 , if washing liquor is to be conducted into the liquid reservoir 4 through the return line 26 by means of the circulation pump 10 .
  • a multi-way valve embodied as a water distributor can further be used instead of individual valves, which for example has a disk adjustable by means of a motor.
  • a washing program comprising a multiplicity of program steps is run, which can for example encompass the program steps pre-rinse, washing, intermediate rinse step and final rinsing, plus drying.
  • the water or washing liquor that is water mixed with detergent or rinse aid, is here heated during at least two of these program steps, for example during the washing and the rinsing step.
  • a change of washing liquor involving the circulated washing liquor takes place between the partial program steps, that is after the conclusion of a partial program step the dishwasher is once more filled with liquid or water respectively.
  • a pre-rinse step can for example be performed, after an amount of liquid has flowed into the tub 6 via conduit means (not shown).
  • the amount of liquid is circulated from the circulation pump 10 after corresponding actuation of the motor 12 by means of the control device 14 , and fed to the spray arm 8 .
  • the amount of liquid is directed through the return line 26 into the liquid reservoir 4 after opening of the return valve 20 , where a closed drain valve 18 prevents the tub 4 being emptied once again.
  • the tub 6 is filled with an amount of liquid via conduit means (not shown), and the amount of liquid circulated by means of the circulation pump 10 and simultaneously heated.
  • the amount of liquid can be conveyed from the tub 6 into the liquid reservoir 4 through opening of return line 26 by means of actuation of the return valve 20 .
  • an intermediate rinse step the tub 6 is once more filled with an amount of liquid and the liquid then circulated with the circulation pump, without being heated.
  • a heating takes place solely through the heat transition from the liquid reservoir 4 into the interior of the tub 6 , as the liquid stored in the liquid reservoir 6 has a higher temperature than prevails in the interior of the tub 6 .
  • both the tub 6 and the liquid reservoir 4 are emptied. This can take place consecutively, starting with the tub 6 , or simultaneously.
  • the tub 6 is once more filled with an amount of liquid for execution of a rinsing step, and the liquid then circulated with the circulation pump, while being further heated.
  • the tub 6 can be emptied by means of a conduit means, which is not shown, which allows liquid to be directed into a domestic wastewater disposal system.
  • the amount of liquid temporarily stored in the liquid reservoir 4 is directed into the tub 6 by opening of the drain valve, and used to perform a pre-rinse step.
  • an energy saving can also be achieved with the inventive method in the case of modifications to the program sequence, in which during the intermediate rinse and/or pre-rinse step a heating of the liquid or washing liquor is also provided for, or in which the intermediate rinse and or pre-rinse step are blanked out.

Landscapes

  • Washing And Drying Of Tableware (AREA)
US12/995,673 2008-06-27 2009-06-18 Method for operating a water-conducting domestic appliance Abandoned US20110083699A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008030537.5 2008-06-27
DE102008030537A DE102008030537A1 (de) 2008-06-27 2008-06-27 Verfahren zum Betreiben eines wasserführenden Haushaltsgeräts
PCT/EP2009/057612 WO2009156332A1 (fr) 2008-06-27 2009-06-18 Procédé de fonctionnement d'un appareil électro-ménager dans lequel circule de l'eau

Publications (1)

Publication Number Publication Date
US20110083699A1 true US20110083699A1 (en) 2011-04-14

Family

ID=41268171

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/995,673 Abandoned US20110083699A1 (en) 2008-06-27 2009-06-18 Method for operating a water-conducting domestic appliance

Country Status (5)

Country Link
US (1) US20110083699A1 (fr)
EP (1) EP2303089A1 (fr)
CN (1) CN102076256A (fr)
DE (1) DE102008030537A1 (fr)
WO (1) WO2009156332A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120227767A1 (en) * 2011-03-07 2012-09-13 Steelco Spa Washing Machine and Corresponding Washing Method
US11525200B2 (en) * 2019-01-31 2022-12-13 Ecolab Usa Inc. Controller for a rinse water reuse system and methods of use
US11572652B2 (en) 2019-01-31 2023-02-07 Ecolab Usa Inc. Controlling water levels and detergent concentration in a wash cycle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013143576A1 (fr) 2012-03-27 2013-10-03 Electrolux Home Products Corporation N.V. Lave-vaisselle et procédé de fonctionnement d'un lave-vaisselle
CN105769085A (zh) * 2016-04-28 2016-07-20 佛山市顺德区美的洗涤电器制造有限公司 洗碗机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070204A (en) * 1976-01-22 1978-01-24 General Electric Company Low-energy dishwasher
DE3900617A1 (de) * 1989-01-11 1990-07-12 Licentia Gmbh Verfahren und vorrichtung zur waermerueckgewinnung
US5617885A (en) * 1994-02-25 1997-04-08 Electrolux Zanussi Elettrodomestici S.P.A. Washing machine with water recovery arrangement
US5829459A (en) * 1996-04-10 1998-11-03 Electrolux Zanussi Elettrodomestici S.P.A. Washing machine with a multi-function water reservoir
US20040118435A1 (en) * 2002-11-14 2004-06-24 Clemens Jung Method of operating a dishwasher with a central control unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2730489C2 (de) 1977-07-06 1984-08-02 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zur Rückgewinnung von Wärme bei einer Haushalt-Geschirrspülmaschine sowie Haushalt-Geschirrspülmaschine zur Durchführung des Verfahrens
DE3609277A1 (de) * 1986-03-19 1987-09-24 Ascher Erhard Wasch- oder spuelmaschine mit einem waermetauscher
DE4233643C2 (de) * 1992-10-06 1996-01-25 Bosch Siemens Hausgeraete Wasserführendes Haushaltgerät
IT1289371B1 (it) * 1996-04-10 1998-10-02 Electrolux Zanussi Elettrodome Lavastoviglie con serbatoio per il recupero d'acqua e sistema di asciugatura a condensazione perfezionato
IT1296337B1 (it) * 1997-11-05 1999-06-25 Electrolux Zanussi Elettrodome Lavatrice automatica con sistema di recupero energetico

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070204A (en) * 1976-01-22 1978-01-24 General Electric Company Low-energy dishwasher
DE3900617A1 (de) * 1989-01-11 1990-07-12 Licentia Gmbh Verfahren und vorrichtung zur waermerueckgewinnung
US5617885A (en) * 1994-02-25 1997-04-08 Electrolux Zanussi Elettrodomestici S.P.A. Washing machine with water recovery arrangement
US5829459A (en) * 1996-04-10 1998-11-03 Electrolux Zanussi Elettrodomestici S.P.A. Washing machine with a multi-function water reservoir
US20040118435A1 (en) * 2002-11-14 2004-06-24 Clemens Jung Method of operating a dishwasher with a central control unit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
English Machine Translation of DE 3900617 A1. *
Perry's Chemical Engineering Handbook. Pages 8-71 through 8-78. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120227767A1 (en) * 2011-03-07 2012-09-13 Steelco Spa Washing Machine and Corresponding Washing Method
US9592311B2 (en) * 2011-03-07 2017-03-14 Steelco Spa Washing machine and corresponding washing method
US11525200B2 (en) * 2019-01-31 2022-12-13 Ecolab Usa Inc. Controller for a rinse water reuse system and methods of use
US11572652B2 (en) 2019-01-31 2023-02-07 Ecolab Usa Inc. Controlling water levels and detergent concentration in a wash cycle

Also Published As

Publication number Publication date
WO2009156332A1 (fr) 2009-12-30
EP2303089A1 (fr) 2011-04-06
CN102076256A (zh) 2011-05-25
DE102008030537A1 (de) 2009-12-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ROSENBAUER, MICHAEL GEORG;REEL/FRAME:025436/0288

Effective date: 20101130

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION