EP2352410A1 - Lave-vaisselle et procédé correspondant de chauffage de liquide - Google Patents

Lave-vaisselle et procédé correspondant de chauffage de liquide

Info

Publication number
EP2352410A1
EP2352410A1 EP09748272A EP09748272A EP2352410A1 EP 2352410 A1 EP2352410 A1 EP 2352410A1 EP 09748272 A EP09748272 A EP 09748272A EP 09748272 A EP09748272 A EP 09748272A EP 2352410 A1 EP2352410 A1 EP 2352410A1
Authority
EP
European Patent Office
Prior art keywords
dishwasher
liquid
heating
temperature
low temperature
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
EP09748272A
Other languages
German (de)
English (en)
Other versions
EP2352410B1 (fr
Inventor
Michael Fauth
Helmut Jerg
Kai Paintner
Andreas Reiter
Roland Rieger
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41381779&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2352410(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL09748272T priority Critical patent/PL2352410T3/pl
Publication of EP2352410A1 publication Critical patent/EP2352410A1/fr
Application granted granted Critical
Publication of EP2352410B1 publication Critical patent/EP2352410B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A47L15/48—Drying arrangements
    • A47L15/481—Drying arrangements by using water absorbent materials, e.g. Zeolith
    • 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
    • A47L15/0005—Rinsing phases, e.g. pre-rinsing, intermediate rinsing, final rinsing
    • 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
    • A47L15/0007—Washing phases
    • 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
    • A47L15/4285—Water-heater arrangements
    • 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
    • A47L15/4287—Temperature measuring or regulating arrangements
    • 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

Definitions

  • the invention relates to a method for operating a dishwasher, in particular a domestic dishwasher, according to the preamble of patent claim 1.
  • Dishwashers are known to go through wash programs comprising a plurality of program steps, such as e.g. Pre-rinsing, cleaning, rinsing, rinsing and drying the cleaned items.
  • program steps e.g. pre-rinsing, cleaning, rinsing, rinsing and drying the cleaned items.
  • heating liquid with a heating means designed as a water heater which can be the same amount of liquid which is heated twice with the water heater, or two quantities of liquid.
  • the heating with a water heater allows a rapid heating of the liquid, but this exposes particularly sensitive items particular loads.
  • the invention has for its object to reduce the thermal loads, in particular of sensitive items to be washed.
  • the object of the invention is based on a method for operating a dishwasher, in particular a household dishwasher, in which a liquid is heated to a final temperature with a first heating means.
  • the heating means may be two water heaters, one or both of which are designed as a continuous flow heater for heating circulated liquid and / or may be integrated into a circulating pump.
  • one or both heating means may be arranged directly in the serving as a washing container of the dishwasher interior.
  • an air heater is used as the second heating means.
  • the air heating takes place in particular a gentle heating of the
  • the air heater can be designed such that it is able to expel fluid from a desiccant as part of a Sorptionstrockungssystem at the same time.
  • a water heater is used as the first heating means. This allows a particularly rapid heating to the second, higher end temperature and thus a shortening of the total program duration of a wash program.
  • the first, low temperature is selected substantially between 30 to 50 0 C, in particular between 40 to 45 ° C. This ensures a short heating time and thus no extension of the total program duration of a wash program.
  • the second, higher temperature is selected substantially between 45 to 80 0 C, in particular between 55 to 75 ° C. This ensures that cleaning agents can develop their optimum effect and thus ensure optimum cleaning results.
  • the desorption of the first, low temperature at least partially desorption of a reversibly dehydratable dry material (ZEO), in particular zeolite, a sorption drying system is effected.
  • ZO reversibly dehydratable dry material
  • a sorption drying system is effected. This ensures that the desorption process is carried out by means of the air heating at the beginning of a heating phase of a liquid. At this time, the temperature is lowest in comparison with the subsequent program steps of a washing program and thus the moisture absorption capacity of the air in the interior of the dishwasher is greatest. This ensures a particularly effective desorption process.
  • the desorption process can be completed.
  • it is also possible that upon reaching the first, low temperature only a partial desorption was achieved and a complete desorption is achieved at a later time of a Spülprogramm penlaufs or during a further subsequent Spülprogramm penlaufs.
  • cleaning with detergent addition and cleaning action liquid is first heated to the first, low temperature, then to the second, higher final temperature.
  • This allows a particularly energy-efficient cleaning of items to be washed.
  • it can be provided to heat liquid only during the program step, which further reduces the energy requirement.
  • rinsing with rinse aid liquid is heated to the first, low temperature. This makes it possible, for example, to complete a desorption process begun in a previous program step, or to perform a complete desorption process. Also at this time, the air inside the interior of the dishwasher is due to the liquid changes, i. Abpumpvor réelle and refills with approximately 15 ° C warm water from a home-side supply system compared to other times a wash program is relatively cold, so that an efficient Desorptionsvorgang is guaranteed.
  • a dishwasher in particular household dishwasher, with a first heating means for heating a liquid to a final temperature, wherein it is provided according to the invention that second heating means are provided for heating the liquid to a first, low temperature, wherein the first low temperature is below the final temperature.
  • Show it: 1 is a schematic representation of an embodiment of a dishwasher according to the invention with a sorption drying system
  • FIG. 2 shows a schematic representation of the temperature profile during a first embodiment of a rinsing program run according to the invention
  • Fig. 3 is a schematic representation of the temperature profile of another, second
  • FIG. 4 is a schematic representation of the temperature profile of a further, third exemplary embodiment of a rinsing program run according to the invention.
  • a dishwasher GS designed in the present exemplary embodiment as a domestic dishwasher has an interior space IR serving as a washing container, which can be opened or closed for loading and unloading by means of a door (not shown) pivotably hinged to the dishwasher GS.
  • Dishwashing baskets GK are provided in the interior IR of the dishwasher GS for receiving items to be cleaned, which can be pulled out of the interior IR of the dishwasher GS in order to facilitate loading and unloading.
  • means for supplying items to be washed with liquid are provided in the interior IR of the dishwasher GS as spraying arms SA, wherein the liquid may, for example, be filled with water.
  • Cleaning agents or rinse with water may act to offset such a
  • the liquid flowing down from the items to be washed collects in a pump sump PS, which is arranged in the bottom area of the interior IR of the dishwasher GS.
  • the spray arms SA are fluidly connected via a supply line ZL with a circulation pump UP, which is arranged in a floor assembly BO below the interior IR of the dishwasher GS next to other components of the dishwasher.
  • a circulation pump UP sucks the liquid accumulated in the pump sump PS and conveys them through the supply line ZL to the spray arms SA.
  • the circulating pump has an integrated water heater WZ for heating the liquid.
  • a separate instantaneous water heater or another water heater may be provided.
  • a drain pump LP is provided, which is also in fluid-conducting connection with the pump sump PS and can be connected to a disposal line EL to a house-side sewage disposal network.
  • the dishwasher GS has a Sorptionstrockungssystem with which arranged in the baskets GR and cleaned items can be dried at the end of a Spülprogramm penatoriums.
  • a sorption SB is provided in the bottom assembly BO, which is air-conductively connected via an air duct LK with an inlet El, wherein for generating a forced flow, a fan LT is provided.
  • an outlet opening AU is provided in the bottom region of the interior IR dishwasher GS.
  • a drying agent for carrying out an exothermic drying is provided in the sorption container SB.
  • It is a reversibly dehydratable drying material, e.g. Zeolite, which absorbs water due to its hydroscopic property, at the same time heat energy is released. By this released heat energy heating of the circulating air is effected, which at the same time increases the moisture absorption capacity of the circulating air.
  • an amount of liquid is stored in the drying material ZEO.
  • an air heater HZ is provided, which is arranged in the present embodiment in the sorption SB.
  • an air heater outside of the sorbent SB for example in the air duct LK to cause heating of the conveyed into the sorbent SB air.
  • an air flow generated by the fan LT is heated, so that the drying material ZEO can be heated to temperatures at which the amount of water stored in the drying material ZEO can be released again.
  • Dishwashers GS continuous for cleaning and drying of items to be cleaned, wash programs, which consist of a plurality of program steps, which are passed through successively.
  • Such a program may consist of the program steps pre-wash V, cleaning R, intermediate rinsing Z, rinsing K and drying T, with individual program steps such.
  • the pre-rinsing V or intermediate rinsing Z can also be hidden, while it is also conceivable to pass through individual program steps repeatedly, such as the intermediate rinsing Z.
  • Wash ware is charged with water without the addition of detergents, this either with unheated water or with heated water by means of a heater.
  • water can be used that has been stored in a water tank (not shown).
  • a water tank can be in heat-conducting connection with the environment of the dishwasher, so that liquid stored in the water tank, such as water from a home-side supply system, can warm up to room temperature.
  • cleaning step R cleaning of items to be washed takes place by application of detergent-added water, ie during the cleaning stage, a detergent is added. Furthermore, a heating of the liquid, so as to increase the cleaning effect of the cleaning agent.
  • the cleaning step R is composed of a heating phase P1, P2, in which the liquid is heated in the dishwasher GS by means of heating until a predetermined maximum temperature is reached and a subsequent Nachwaschphase together, while the heater is turned off, the slowly cooling liquid by the circulating pump UP is circulated.
  • the intermediate rinse Z program step liquid is applied to the items to be washed in order to convey dirt residues from the dishwasher GS.
  • the next step in the program is rinsing K in preparation for the program step drying T, in which water mixed with rinse aid is circulated by means of the circulation pump and applied to the now cleaned items via the spray arms SA.
  • the program step drying T in which the ware is no longer charged with liquid, but by operation of the fan LT through the interior IR of the dishwasher GS and the sorbent SB circulating air flow is generated.
  • a complete or at least partial fluid change can be carried out between the individual program steps, ie the dishwasher GS is emptied by means of the drain pump LP and the disposal line EL and refilled again by a supply line (not shown) making a connection to a house-side supply system.
  • heating of liquid takes place only in the program step cleaning R.
  • the liquid circulated by the circulation pump UP is heated by the air heater HZ in the sorption tank SB to a maximum temperature T1, wherein the fan LT at the same time circulates through the interior IR of the dishwasher GS air flow generated.
  • the air heater HZ heats the drying material ZEO into the sorption container SB to temperatures at which the amount of water stored in the drying material ZEO is expelled from the drying material ZEO and conveyed through the outlet opening AU into the interior IR dishwasher GS.
  • the blow-out opening AU in the interior IR dishwasher GS is cooled so as to ensure that it is due to the heating power of the air heater HZ does not come to excessive heating of the exhaust port HZ with overheating damage.
  • the circulation pump UP is operated so that liquid is conveyed from the pump sump PS through the supply line to the spray arm SA by the circulation pump.
  • the spray arms SA are set in rotation and cause by spraying the exhaust opening AU, in particular a cap covering the exhaust opening AU with liquid, a cooling thereof.
  • the amount of liquid is heated from the first temperature T1 to the second temperature T2 by means of the water heater WZ.
  • the rotational speed of the circulation pump UP to increase the spray pressure of the water jets emerging from the spray arm SA.
  • the amount of liquid circulated by the circulation pump UP increased by a refilling step, for example, at time t1 (see Figure 2) and then increases the speed of the circulation pump UP, e.g. continuously until the recirculation pump runs under run-flat condition, i.e., does not draw in air bubbles during operation, which reduces the delivery rate of the recirculation pump UP and results in undesirable noise.
  • This makes it possible to take into account the amount of liquid released during the desorbing, which was stored in the drying material ZEO, in the dimensioning of the amount of liquid to be replenished and thus to reduce the total water requirement with improved cleaning performance.
  • Liquid i. with rinse aid added water, can drain from the dishes due to gravity and in the pump sump PS of the interior of the IR
  • Dishwasher GS can collect. As a result, the of the
  • Sorption drying system reduces the amount of liquid to be absorbed and thus the duration of the program step drying T.
  • Abtropfphase AB ie at the end of the program step rinse K, a Abpumpvorgang takes place, in which the liquid mixed with rinse aid is conveyed by the drain pump LP through the drain line EL in a house-side sanitation system.
  • the Abtropfphase AB during which neither the circulation pump UP nor the drain pump LP and not the fan LT or one of the heaters HZ, WZ are in operation.
  • the program step drying T starts by putting the fan LT, so that a circulating through the interior IR of the dishwasher and the sorbent SB air flow is generated to dry the cleaned items in the baskets GK.
  • a further pumping down by means of the drain pump LP by means of which a remaining amount of liquid from the dishwasher GS is conveyed through the discharge line EL in a house-side sewage disposal system.
  • it can also be provided to perform a further pump-down process additionally or alternatively at the beginning of the program step drying T.
  • liquid is heated in the first of the program steps, the pre-rinsing program step V.
  • liquid is heated from a starting temperature TO during a phase PV to a temperature TV by means of the air heating HZ, as described above by means of the fan LT a circulating through the interior IR of the dishwasher GS and the sorbent SB air flow is generated.
  • the air heater HZ is deactivated.
  • the drying material ZEO is not yet completely desorbed, i. in the drying material ZEO a residual amount of water is stored.
  • the liquid is heated by the air heater HZ to a temperature T1 in the subsequent program step cleaning R and then by operating the Water heating to the temperature T2 heated.
  • the desorption phase of the drying agent ZEO in the sorption container SB is divided into two in this exemplary embodiment and is distributed over two program steps, namely the preprocessing program step V and the program step cleaning R.
  • a further phase P3 (see FIG. 3) can be provided, while the water heater WZ is used to further heat the liquid to a temperature T3.
  • the liquid is heated during the rinsing step K.
  • the water heater WZ liquid which is water or water mixed with rinse aid, is heated to a temperature T4.
  • the water heating and the air heater HZ be used to complete, for example, a previously not complete in the course of the program desorption.
  • a further heating of the liquid to a temperature T5 can take place in order to improve the drying with the sorption drying system.

Landscapes

  • Washing And Drying Of Tableware (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un lave-vaisselle (GS), notamment un lave-vaisselle ménager, un liquide étant chauffé à une température finale (T2) au moyen d'un premier élément de chauffe. Selon l'invention, un deuxième élément de chauffe permet de chauffer le liquide à une température faible (T1, T1') inférieure à la température finale (T2).
EP09748272.3A 2008-11-07 2009-10-16 Lave-vaisselle et procédé pour chauffer le liquide Active EP2352410B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09748272T PL2352410T3 (pl) 2008-11-07 2009-10-16 Zmywarka do naczyń i odpowiedni sposób ogrzewania cieczy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008043557A DE102008043557A1 (de) 2008-11-07 2008-11-07 Verfahren zum Betreiben einer Geschirrspülmaschine
PCT/EP2009/063600 WO2010052115A1 (fr) 2008-11-07 2009-10-16 Lave-vaisselle et procédé correspondant de chauffage de liquide

Publications (2)

Publication Number Publication Date
EP2352410A1 true EP2352410A1 (fr) 2011-08-10
EP2352410B1 EP2352410B1 (fr) 2015-09-02

Family

ID=41381779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09748272.3A Active EP2352410B1 (fr) 2008-11-07 2009-10-16 Lave-vaisselle et procédé pour chauffer le liquide

Country Status (4)

Country Link
EP (1) EP2352410B1 (fr)
DE (1) DE102008043557A1 (fr)
PL (1) PL2352410T3 (fr)
WO (1) WO2010052115A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017108349B4 (de) 2016-05-23 2023-03-09 Miele & Cie. Kg Wasch- oder Spülmaschine mit einer Heizeinrichtung zur Aufheizung der Wasch- oder Spülflüssigkeit

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
DE2232119A1 (de) 1972-06-30 1974-01-17 Licentia Gmbh Geschirrspuelmaschine
US4326552A (en) * 1979-01-23 1982-04-27 Ingo Bleckmann Heater for heating flows of fluid and dishwashing machine provided therewith
DE9410453U1 (de) * 1994-06-28 1994-12-01 Premark Feg Corp Ablaufwasser-Wärmerückgewinnungsanlage und Spülmaschine
DE9421812U1 (de) * 1994-10-25 1997-01-23 Bauknecht Hausgeräte GmbH, 70565 Stuttgart Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
DE4443849A1 (de) 1994-10-25 1996-05-02 Bauknecht Hausgeraete Verfahren und Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
IT1303258B1 (it) 1998-10-28 2000-11-06 Smeg Spa Lavastoviglie con ciclo di pre-riscaldamento.
US6138692A (en) 1999-01-22 2000-10-31 Whirlpool Corporation Cycle for a dishwasher to reduce filming
DE10013399A1 (de) * 2000-03-17 2001-09-27 Aeg Hausgeraete Gmbh Verfahren zur Wärmerückgewinnung bei einer Geschirrspülmaschine
DE10353774A1 (de) 2003-07-30 2005-02-24 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
DE102004048091A1 (de) * 2004-09-30 2006-04-06 Meiko Maschinenbau Gmbh & Co. Kg Geschirrspülmaschine mit thermischer Nachbehandlung
DE102005004089A1 (de) * 2004-12-09 2006-06-14 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Sorptionstrockenvorrichtung und Verfahren zum Betreiben derselben
DE102005004092A1 (de) 2004-12-09 2006-06-14 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine mit einer Sorptionstrockenvorrichtung und Verfahren zum Betreiben derselben
DE102004060947A1 (de) 2004-12-17 2006-06-29 BSH Bosch und Siemens Hausgeräte GmbH Haushalts-Geschirrspülmaschine und Verfahren zum Betreiben derselben
DE102008040650A1 (de) * 2008-07-23 2010-01-28 BSH Bosch und Siemens Hausgeräte GmbH Spülverfahren für ein wasserführendes Haushaltsgerät
DE102008040770A1 (de) 2008-07-28 2010-02-04 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines wasserführenden Haushaltsgerät
DE202008011159U1 (de) * 2008-08-21 2008-11-06 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine und Sorptionstrockenvorrichtung, deren Sorptionsmaterial gewichtsmäßig an die Benetzungsmenge im Spülraum angepasst ist

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See references of WO2010052115A1 *

Also Published As

Publication number Publication date
EP2352410B1 (fr) 2015-09-02
PL2352410T3 (pl) 2016-01-29
DE102008043557A1 (de) 2010-05-12
WO2010052115A1 (fr) 2010-05-14

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