EP2352414B1 - Procédé de fonctionnement d'un lave-vaisselle - Google Patents

Procédé de fonctionnement d'un lave-vaisselle Download PDF

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Publication number
EP2352414B1
EP2352414B1 EP09744114.1A EP09744114A EP2352414B1 EP 2352414 B1 EP2352414 B1 EP 2352414B1 EP 09744114 A EP09744114 A EP 09744114A EP 2352414 B1 EP2352414 B1 EP 2352414B1
Authority
EP
European Patent Office
Prior art keywords
dishwasher
drying
program step
fluid
items
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.)
Revoked
Application number
EP09744114.1A
Other languages
German (de)
English (en)
Other versions
EP2352414A1 (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
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL09744114T priority Critical patent/PL2352414T3/pl
Publication of EP2352414A1 publication Critical patent/EP2352414A1/fr
Application granted granted Critical
Publication of EP2352414B1 publication Critical patent/EP2352414B1/fr
Revoked 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
    • A47L15/48—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
    • A47L15/001—Drain phases, including initial, intermediate or partial draining 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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0013—Drying phases, including dripping-off 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
    • 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 step rinsing the cleaned items to be washed are treated with a liquid, in particular with a liquid added with a rinse aid, and then dried in the program step of drying.
  • the document EP-A1-1674031 discloses a dishwasher and a method for operating a dishwasher, in particular a domestic dishwasher, in which at least in a program step rinsing cleaned Spulgut with a liquid, in particular with a liquid added with a rinse aid, is applied, and then drying in a program step drying the Spulgutes takes place, wherein prior to the beginning of the program step drying a dripping phase is passed, at the beginning of the loading of the liquid is terminated and the liquid drains from the Spulgut.
  • the invention has for its object to achieve a further improved drying result.
  • the invention is based on a method for operating a dishwasher, in particular a domestic dishwasher, in which at least in one program step rinsing cleaned items to be treated with a liquid, and then in a program step drying a drying of the items.
  • the dripping phase essentially takes between 3 and 15 minutes, in particular between 5 and 10 minutes. This allows to increase the drying performance without extending the total duration of a wash program.
  • a forced flow of the items to be dried is carried out during the program step dry. This further improves the drying result and at the same time shortens the duration of the program step drying.
  • the forced flow is generated by means of a fan.
  • drying the fan for a predetermined period of time is operated substantially between 1 and 60 minutes, in particular between 3 and 30 minutes.
  • a reversibly dehydratable drying agent in particular zeolite, is used for the exothermic drying.
  • This material is characterized by a high water absorption capacity and good reversible dehydratability, wherein the drying line can be increased again without additional expenditure of energy by the exothermic drying.
  • a dishwasher in particular domestic dishwasher, which is at least designed to apply a liquid to at least one program step rinsing cleaned items to be washed and then drying the items to be dried in a program step, wherein it is provided that before the beginning of the program step drying a dripping phase is provided at the beginning of the loading of items to be washed with the liquid is completed and the liquid drains from the dishes.
  • the dishwasher is characterized in that a circulation pump for applying items to be washed with liquid is provided at least during the program step rinsing, the dishwasher for stopping the circulation pump at the end of the program step rinsing is formed, and that after stopping the circulation pump, a pumping down, in particular by means of a lye pump, is feasible
  • FIG. 1 Referenced.
  • 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. can act with detergents or with rinse aid added water, so as to effect a cleaning effect or streak-free drying.
  • 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 in addition to other components of the dishwasher GS is disposed in a floor assembly BO below the interior IR of the dishwasher GS.
  • a circulation pump UP sucks the liquid accumulated in the pump sump PS and delivers it 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 sorption drying system, with which in the dish racks GR arranged and cleaned items can be dried at the end of a Spülprogramm pensburgs.
  • a sorption SB is provided in the bottom assembly BO, which is air-conductively connected to an inlet EI via an air channel LK, wherein a fan LT is provided for generating a forced flow.
  • an outlet opening AU is provided in the bottom area 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 reversible dehydratable drying material, such as 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.
  • zeolite a reversible dehydratable drying material
  • an air heater HZ is provided, which is arranged in the present embodiment in the sorption SB.
  • an air heater outside the sorbent tank SB e.g. in the air passage 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.
  • 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-wash V or intermediate rinse Z can also be hidden, while it is also conceivable to pass through individual program steps repeatedly, such as the intermediate rinsing Z.
  • 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).
  • Such 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 of items to be washed takes place by application of detergent-added water, ie during the cleaning stage a detergent addition takes place.
  • 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 in the Dishwasher GS is heated by means of heating means until a predetermined maximum temperature is reached and a subsequent Nachwaschphase together, while the switched off heating means, the slowly cooling liquid is circulated by means of the circulation pump UP.
  • 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.
  • the rinse program according to FIG. 2 takes place only in the program step cleaning R heating of liquid.
  • 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 is cooled in the interior IR dishwasher GS, so as to ensure that due to the heating power of the air heater HZ no excessive heating of the blow-out opening HZ with overheating damage occurs.
  • 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.
  • a dripping AB is provided (see. FIG. 2 ), while the liquid adhering to the cleaned items to be washed, ie, water added with rinse aid, can run off the items to be washed due to gravity and can collect in the pump sump PS of the interior IR of the dishwasher GS. As a result, the amount of liquid to be absorbed by the sorption drying system is reduced and thus the duration of the program step drying T.
  • 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.
  • a further pumping down process additionally or alternatively at the beginning of the program step drying T.
  • the program step prewash V.
  • the air heater HZ liquid starting from a start temperature T0 during a phase P1 'heated to a temperature T1', in which as described above by means of the fan LT through the interior IR of the dishwasher GS and the sorbent SB circulating air flow is generated.
  • the air heater HZ is deactivated.
  • the drying material ZEO is not completely desorbed, ie in the drying material ZEO a residual amount of water is stored.
  • the subsequent program step cleaning R first heated the liquid by means of the air heater HZ to a temperature T1 and then by operating the Water heating to the temperature T2 heated. That is, the desorption phase of the drying agent ZEO in the sorption container SB is divided into two parts in this embodiment and is distributed over two program steps, namely the program step pre-wash V and the program step cleaning R.
  • phase P3 (cf. FIG. 3 ), while the water heating WZ is used to further heat the liquid to a temperature T3.
  • a heating of the liquid takes place during a phase P4 by means of 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)

Claims (20)

  1. Procédé pour faire fonctionner un lave-vaisselle (GS), en particulier un lave-vaisselle ménager, selon lequel, au moins dans une étape de programme rinçage (K), la vaisselle lavée est traitée avec un liquide, en particulier avec un liquide mélangé à un liquide de rinçage, puis la vaisselle est séchée dans une étape de programme séchage (T), sachant qu'avant le début de ladite étape de programme séchage (T), une phase d'égouttage (AB) est parcourue, au début de laquelle le traitement avec le liquide est achevé et le liquide s'écoule de la vaisselle, caractérisé en ce que pendant l'étape de programme rinçage (K), la vaisselle est traitée avec du liquide au moyen d'une pompe de circulation (UP), ladite pompe de circulation (UP) étant arrêtée à la fin de l'étape de programme rinçage (K), et en ce que, une fois la pompe de circulation (UP) arrêtée, un pompage est effectué, en particulier au moyen d'une pompe de vidange (LP).
  2. Procédé selon la revendication 1, caractérisé en ce que la durée de la phase d'égouttage (AB) est sensiblement comprise entre 3 et 15 minutes, en particulier entre 5 et 10 minutes.
  3. Procédé selon au moins une des revendications 1 et 2, caractérisé en ce que pendant l'étape de programme séchage (T), la vaisselle à sécher est exposée à un courant d'air forcé.
  4. Procédé selon la revendication 3, caractérisé en ce que le courant d'air forcé est produit par un ventilateur (LT).
  5. Procédé selon la revendication 4, caractérisé en ce qu'au cours de l'étape de programme séchage (T), le ventilateur (LT) fonctionne pendant un intervalle de temps prédéterminé, sensiblement compris entre 1 et 60 minutes, en particulier entre 3 et 30 minutes.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'une quantité sensiblement comprise entre 1 et 5 litres de liquide, en particulier entre 2 et 4 litres de liquide, est pompée.
  7. Procédé selon au moins une des revendications 1 à 6, caractérisé en ce qu'à la fin de l'étape de programme séchage (T), un pompage est effectué, en particulier au moyen d'une pompe de vidange (LP).
  8. Procédé selon l'une des revendications 1 à 5, caractérisé en ce qu'une quantité sensiblement comprise entre 0,05 et 1 litre de liquide, en particulier entre 0,1 et 0,3 litre de liquide est pompée.
  9. Procédé selon au moins une des revendications 1 à 8, caractérisé en ce que pour sécher la vaisselle, de l'air humide provenant d'un espace intérieur (IR) du lave-vaisselle (GS) est conduit à travers un système de séchage par sorption.
  10. Procédé selon la revendication 9, caractérisé en ce que pour le séchage exotherme, un agent dessiccateur déshydrogénable de manière réversible (ZEO) est utilisé, en particulier une zéolithe.
  11. Lave-vaisselle (GS), en particulier lave-vaisselle ménager, lequel est au moins adapté pour traiter, au moins dans une étape de programme rinçage (K), la vaisselle lavée avec un liquide, en particulier avec un liquide mélangé à un liquide de rinçage, puis pour sécher la vaisselle dans une étape de programme séchage (T), sachant qu'avant ladite étape de programme séchage (T) une phase d'égouttage (AB) est prévue, au début de laquelle le traitement avec le liquide est achevé et le liquide s'écoule de la vaisselle, caractérisé en ce qu'une pompe de circulation (UP) est prévue pour traiter la vaisselle avec du liquide au moins pendant l'étape de programme rinçage (K), le lave-vaisselle (GS) étant adapté pour arrêter la pompe de circulation (UP) à la fin de l'étape de programme rinçage (K), et en ce que, une fois la pompe de circulation (UP) arrêtée, un pompage peut être effectué, en particulier au moyen d'une pompe de vidange (LP).
  12. Lave-vaisselle (GS) selon la revendication 11, caractérisé en ce que la durée de la phase d'égouttage (AB) est sensiblement comprise entre 3 et 15 minutes, en particulier entre 5 et 10 minutes.
  13. Lave-vaisselle (GS) selon au moins une des revendications 11 et 12, caractérisé en ce que des moyens sont prévus pour exposer la vaisselle à sécher à un courant d'air forcé au moins pendant l'étape de programme séchage (T).
  14. Lave-vaisselle (GS) selon la revendication 13, caractérisé en ce que les moyens permettant de produire un courant d'air forcé comprennent un ventilateur (LT).
  15. Lave-vaisselle (GS) selon la revendication 14, caractérisé en ce qu'au cours de l'étape de programme séchage (T), le ventilateur (LT) peut fonctionner pendant un intervalle de temps prédéterminé, sensiblement compris entre 1 et 60 minutes, en particulier entre 3 et 30 minutes.
  16. Lave-vaisselle (GS) selon au moins une des revendications 11 à 15, caractérisé en ce qu'une quantité sensiblement comprise entre 1 et 5 litres de liquide, en particulier entre 2 et 4 litres de liquide, peut être pompée.
  17. Lave-vaisselle (GS) selon au moins une des revendications 11 à 16, caractérisé en ce qu'à la fin de l'étape de programme séchage (T), un pompage peut être effectué, en particulier au moyen d'une pompe de vidange (LP).
  18. Lave-vaisselle (GS) selon la revendication 17, caractérisé en ce qu'une quantité sensiblement comprise entre 0,05 et 1 litre de liquide, en particulier entre 0,1 et 0,3 litre de liquide, peut être pompée.
  19. Lave-vaisselle (GS) selon la revendication 18, caractérisé en ce que pour sécher la vaisselle, un système de séchage par sorption est prévu, à travers lequel peut passer de l'air humide provenant d'un espace intérieur (IR) du lave-vaisselle (GS).
  20. Lave-vaisselle (GS) selon la revendication 19, caractérisé en ce que le système de séchage par sorption comprend au moins un agent dessiccateur déshydrogénable de manière réversible (ZEO), en particulier une zéolithe.
EP09744114.1A 2008-11-07 2009-10-16 Procédé de fonctionnement d'un lave-vaisselle Revoked EP2352414B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09744114T PL2352414T3 (pl) 2008-11-07 2009-10-16 Sposób eksploatacji zmywarki do naczyń

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008043553A DE102008043553A1 (de) 2008-11-07 2008-11-07 Verfahren zum Betreiben einer Geschirrspülmaschine
PCT/EP2009/063597 WO2010052114A1 (fr) 2008-11-07 2009-10-16 Procédé pour faire fonctionner un lave-vaisselle

Publications (2)

Publication Number Publication Date
EP2352414A1 EP2352414A1 (fr) 2011-08-10
EP2352414B1 true EP2352414B1 (fr) 2014-04-23

Family

ID=41531610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09744114.1A Revoked EP2352414B1 (fr) 2008-11-07 2009-10-16 Procédé de fonctionnement d'un lave-vaisselle

Country Status (5)

Country Link
EP (1) EP2352414B1 (fr)
DE (1) DE102008043553A1 (fr)
ES (1) ES2461894T3 (fr)
PL (1) PL2352414T3 (fr)
WO (1) WO2010052114A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183348A5 (fr) * 1972-05-03 1973-12-14 Rapp Electronik
DE9421812U1 (de) * 1994-10-25 1997-01-23 Bauknecht Hausgeraete Vorrichtung zum Trocknen von Geschirr in einer Geschirrspülmaschine
DE19818812A1 (de) * 1998-04-27 1999-10-28 Aeg Hausgeraete Gmbh Geschirrspülmaschine sowie Verfahren zum Trocknen von Spülgut
DE10353774A1 (de) * 2003-07-30 2005-02-24 BSH Bosch und Siemens Hausgeräte GmbH Geschirrspülmaschine
FR2879429B1 (fr) * 2004-12-21 2008-12-05 Brandt Ind Sas Lave-vaisselle et procede de mise en oeuvre du sechage de la vaisselle dans ce lave-vaisselle
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

Also Published As

Publication number Publication date
PL2352414T3 (pl) 2014-09-30
WO2010052114A1 (fr) 2010-05-14
DE102008043553A1 (de) 2010-05-12
ES2461894T3 (es) 2014-05-21
EP2352414A1 (fr) 2011-08-10

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