EP2326230B1 - Procédé de rinçage pour un appareil ménager avec circuit d'eau - Google Patents

Procédé de rinçage pour un appareil ménager avec circuit d'eau Download PDF

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Publication number
EP2326230B1
EP2326230B1 EP09780593.1A EP09780593A EP2326230B1 EP 2326230 B1 EP2326230 B1 EP 2326230B1 EP 09780593 A EP09780593 A EP 09780593A EP 2326230 B1 EP2326230 B1 EP 2326230B1
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EP
European Patent Office
Prior art keywords
temperature
washing
mode
cleaning
washing method
Prior art date
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Active
Application number
EP09780593.1A
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German (de)
English (en)
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EP2326230A1 (fr
Inventor
Helmut Jerg
Michael 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
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BSH Hausgeraete GmbH
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL09780593T priority Critical patent/PL2326230T3/pl
Publication of EP2326230A1 publication Critical patent/EP2326230A1/fr
Application granted granted Critical
Publication of EP2326230B1 publication Critical patent/EP2326230B1/fr
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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
    • A47L15/4285—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
    • A47L15/0002—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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0057—Cleaning of machines parts, e.g. removal of deposits like lime scale or proteins from piping or tub
    • 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
    • A47L15/42—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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/12—Water temperature
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/22—Number of operational cycles
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/34—Other automatic detections
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/34—Change machine operation from normal operational mode into special mode, e.g. service mode, resin regeneration mode, sterilizing mode, steam mode, odour eliminating mode or special cleaning mode to clean the hydraulic circuit
    • 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 rinsing method for a water-conducting domestic appliance, in particular a dishwasher, according to the preamble of patent claim 1.
  • a dishwashing machine dishwashing process in which, in a cleaning step, a quantity of washing liquid provided in a washing container is heated to a cleaning temperature during a heating phase.
  • a drying device As a drying device, a sorption column with reversibly dehydratable material is provided that removes a quantity of water in a drying step of the air to be dried and stores them.
  • a regeneration process or a desorption in which by means of an air heater is sucked from the washing space and heated by the drying agent flowing air stream. With the heated air flow, the amount of water stored in the desiccant is released as hot water vapor and returned to the washing compartment.
  • a dishwasher is known in which an upcoming rinse is performed at a temperature greater than or equal to a threshold temperature when a counter representing the number of consecutive rinses having a temperature below the threshold temperature reaches a threshold.
  • the object of the invention is to provide a rinsing method for a water-conducting domestic appliance, in particular for a dishwasher for suppressing undesired deposit formation.
  • the invention relates to a rinsing method for a water-conducting domestic appliance, in particular for a dishwasher, which in particular has a drying device having a reversibly dehydratable drying agent, wherein in at least one partial program step of a first rinse cycle rinse liquid is heated in a first mode to a first temperature.
  • a rinse a plurality of partial program steps such as pre-rinsing, cleaning, intermediate rinsing, Rinse and dry, which are carried out successively for cleaning items to be washed.
  • At least one rinse cycle is operated in a second mode after a predetermined number of rinses operated in the first mode and / or depending on process parameters of previous rinses, while the rinse liquid is heated to a second, compared to the first temperature elevated temperature becomes.
  • the deposit settling in the line system of the hydraulic circuit can be released in an accelerated manner, whereby no flow obstruction of the rinsing fluid circulated in the hydraulic circuit due to deposit formation is to be feared.
  • at least one rinse cycle is operated in the second operating mode.
  • the dishwasher can thus normally perform rinses that work with a low temperature profile. After a predetermined number of such rinses, at least one rinse can be interposed, which operates with a high temperature profile.
  • Such a change of the first and second modes of operation are based on investigations, according to which a deposit formation in the hydraulic system of the dishwasher is not carried out within one or less rinses, but only in a continuous operation in the low temperature range. Thus, it is possible to run the rinses with a high temperature profile / low temperature profile in a mathematical series.
  • process parameters are in particular the temperature profiles of previous rinses in question, which have a large influence on the formation of deposits, depending on the achieved Mximaltemperaturen.
  • process parameters can be monitored as process parameters.
  • process parameters can be, in addition to the temperature profile, the quantity of rinsing fluid circulated or the degree of contamination of the items to be washed.
  • the temperature is in particular increased such that grease deposits and / or impurities in the hydraulic system of the dishwasher can be reliably released.
  • the second temperature in the second mode should be on the order of 60 to 65 ° C.
  • the invention is particularly applicable to dishwashers with a separate drying system, in which during the drying step, the air to be dried is sucked out of the washing compartment and passed through a desiccant which removes the moisture from the air, the air thus dried being re-introduced into a closed circuit the washing compartment is returned.
  • a heating up of the rinsing liquid in the sub-program step "rinsing" upstream of the drying step up to a temperature of the order of 65 ° C. is dispensed with.
  • Such high heating is required to allow effective condensation on the purge vessel sidewalls in a subsequent drying step.
  • the moisture-laden air during the external drying process heats up to only about 30 ° C. due to the intrinsic heat of the dishes to be washed.
  • a heating up during the rinse step to temperatures of 65 to 75 ° C is not required here.
  • a dishwasher with a washing container 1, in which not shown, to be cleaned dishes in dish racks 3, 5 can be arranged.
  • two spraying arms 7, 9 provided in different spraying levels are arranged by way of example as spraying devices, via which the washware to be cleaned is supplied with washing liquid.
  • a pump pot 11 is provided with a circulating pump 13, which is connected via feed lines 14, 15 fluidly connected to the spray arms 7, 9.
  • a heating element 12 such as a water heater, which is also referred to as water heater.
  • the sump 11 is also connected via connecting pieces with a fresh water supply line 16 coupled to the water supply network and with a discharge line 17 in which a sump pump 18 for pumping out the rinsing liquid from the rinsing container 1 is arranged.
  • the rinsing container 1 has in its upper region an outlet opening 19, which is connected via a line 21 to a drying device designed as a sorption column 22.
  • a drying device designed as a sorption column 22.
  • an air blower 23 and a heating element 24 is connected in line 21 to the sorption column 22.
  • the sorption column 22 contains as drying agent a reversibly dehydratable material, such as zeolite, with which in a drying step T air is dried.
  • zeolite reversibly dehydratable material
  • the zeolite provided in the sorption column 22 absorbs the moisture of the air and the air thus dried is returned to the washing compartment of the washing compartment 1.
  • the amount of water m 2 stored in the drying step T in the zeolite can be released again in a regeneration process, ie in the case of desorption, by heating the desiccant of the sorption column 22.
  • a regeneration process ie in the case of desorption, by heating the desiccant of the sorption column 22.
  • a stream of air heated by the heating element 24 to high temperatures is passed through the sorption column 22, with which the water stored in the zeolite is released as hot steam and thus returned to the rinsing tank 1.
  • the above-described regeneration process in the sorption column 22 can be found in the in the Fig. 2 shown temperature-time profile in the time interval .DELTA.t R instead.
  • Fig. 2 is a temporal program sequence with the individual partial program steps of a rinse, namely pre-rinse V, cleaning R, intermediate rinse Z, rinse K and drying T, illustrated.
  • the in the Fig. 2 indicated partial program steps are carried out by means of a control device 25 by appropriate control of the water heater 12, the circulation pump 13, the drain pump 18, the air blower 23, the drying device 22 and other control components.
  • both the temporal temperature profile of a first mode I and a second mode II is shown.
  • the temperature profiles of the two operating modes are identical to each other with the exception of the different temperature profiles in the cleaning step R.
  • the temperature profile in the first mode I during the cleaning steps R is shown in dashed lines.
  • the heat Q 2 released in the regeneration process .DELTA.t R is used in an energy-saving manner for heating the rinsing liquid m is during the heating phase .DELTA.t H of the cleaning step R.
  • the regeneration process ⁇ t R starts according to Fig. 2 after the pre-rinsing step V already carried out at the beginning of the cleaning step R at the time t 0 .
  • the drying agent amount of water m 2 is returned as water vapor in the washing compartment 1. This amount of water m 2 was removed in the drying step T of a previous rinse during an adsorption ⁇ t A to be dried, laden with moisture airflow.
  • the provided in total in the cleaning step washing liquid R m is thus obtained from a supplied into the washing tub via the fresh water line 16 of fresh water and 1 m of the recirculated in the regenerating process .DELTA.t R into the washing water quantity m 2.
  • the rinsing liquid by means of the circulating pump 13 in the liquid circuit of Dishwasher is circulated, heated to a cleaning temperature.
  • the regeneration process ⁇ t R taking place in parallel with the heating phase ⁇ t H assists in heating the rinsing liquid. It is thus during the heating phase not only by means of in the Fig. 1 indicated first heating element 23, ie the water heater, a first heating power Q 1 introduced into the washing compartment 1.
  • a second heating power Q 2 is introduced into the washing compartment 1.
  • the heating power Q 1 of the water heater 23 may be about 2,200 W, while the heating power Q 2 of the air heater 24 is only in the order of 1,400 W.
  • the heating of the rinsing liquid initially takes place only by means of the water vapor released in the regeneration operation ⁇ t R , which can heat the rinsing liquid with the heating power Q 2 to a temperature T 1 of, for example, approximately 40 ° C. Only after completion of the regeneration process working with much higher heat output Q 1 water heater 12 is switched on. Due to the water heater 12 switched on only after the end of the regeneration process ⁇ t R , thermal damage to the desiccant in the sorption column 22 can be avoided.
  • the temperature of the rinsing liquid in the first operating mode I is raised from the temperature T 1 of 40 ° C. to a cleaning temperature T R1 which is sufficiently large for cleaning purposes.
  • the cleaning temperature T R1 may here be 51 ° C. by way of example.
  • drying step T After rinsing K follows the drying step T.
  • the drying step T is carried out according to the diagram of Fig. 2 at a temperature of about 30 ° C, which is due to the heat of the dishes.
  • the temperature profile in the first operating mode I has the disadvantage that during the rinse cycle no correspondingly high-temperature rinsing liquid circulates in the hydraulic system, which prevents the formation of deposits due to deposits of grease or other impurities.
  • the cleaning temperature T R1 in the first mode I in the order of 50 ° C is sufficient for a good cleaning result, but not suitable to split fats and bring out of the hydraulic system.
  • the control device 25 can switch from the first mode I to the second mode II, in which the cleaning temperature according to the Fig. 2 is increased to T R2 .
  • the cleaning temperature T R2 is in the second mode II in about 60 to 65 ° C, whereby the deposit formation can be reliably prevented.
  • the control device 25 can perform a rinse cycle in the second mode II with a correspondingly increased temperature T R2 only after a predetermined number of rinses operated in the first mode I.
  • three rinses can be run by way of example in a high-temperature profile with the increased cleaning temperature T R2 , while two subsequent rinses can be run in a low-temperature profile with the reduced cleaning temperature T R1 .
  • a lining sensor may be provided which is in signal connection with the control device 25.
  • the lining sensor and the control device 25 can be integrated in a control loop in which the second operating mode is selected only when a predetermined degree of contamination is reached. Accordingly, in the arithmetic mean, that is to say in a series of rinses carried out, the energy consumption of the dishwasher can be reduced.

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  • Washing And Drying Of Tableware (AREA)

Claims (10)

  1. Procédé de lavage pour un appareil ménager à circulation d'eau, notamment pour un lave-vaisselle, qui présente notamment un dispositif de séchage (22) présentant un moyen de séchage réversiblement déshydrogénable, dans lequel dans au moins une étape de programme partiel (R) d'un premier cycle de lavage, du liquide de lavage est échauffé à une première température (TR1) dans un premier mode de fonctionnement (I), au moins un cycle de lavage étant réalisé dans un deuxième mode de fonctionnement (II) après un nombre prédéfini de cycles de lavage réalisés dans le premier mode de fonctionnement (I) et/ou en fonction de paramètres de processus de cycles de lavage précédents, pendant lequel du liquide de lavage est échauffé à une deuxième température (TR2), plus élevée par rapport à la première température (TR1), et l'étape de programme partiel (R) réalisée dans le premier ou le deuxième mode de fonctionnement (I, II) étant une étape de nettoyage pendant laquelle la première et la deuxième températures (TR1, TR2) correspondent respectivement à la température de nettoyage, caractérisé en ce que la température des étapes de programme partiel, lavage intermédiaire (Z), rinçage (K) et séchage (T), réalisées après l'étape de nettoyage (R), étant inférieure à la première resp. à la deuxième température de lavage (TR1, TR2).
  2. Procédé de lavage selon la revendication 1, caractérisé en ce que des profils de température et/ou d'autres grandeurs d'influence sont surveillés en tant que paramètres de processus, lesquels influencent une formation de dépôt dans le système hydraulique de l'appareil ménager.
  3. Procédé de lavage selon la revendication 2, caractérisé en ce que la deuxième température (TR2) de l'étape de programme partiel (R) réalisée dans le deuxième mode de fonctionnement (II) est augmentée de manière à ce que des dépôts de graisse et/ou des salissures dans le système hydraulique du lave-vaisselle soient détachés, et notamment en ce que la température augmentée (TR2) est située dans un ordre de grandeur allant de 60 à 65°C.
  4. Procédé de lavage selon l'une quelconque des revendications 3 à 6, caractérisé en ce que la température de l'étape de programme partiel prélavage (V), réalisée avant l'étape de nettoyage (R), est inférieure à la première resp. à la deuxième température de lavage (TR1, TR2).
  5. Procédé de lavage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'à l'étape de séchage (T), l'air se trouvant dans la cuve de lavage (1) est guidé à travers le dispositif de séchage (22) présentant un moyen de séchage réversiblement déshydrogénable.
  6. Procédé de lavage selon la revendication 5, caractérisé en ce que l'air en provenance du dispositif de séchage (22) est guidé en retour dans la cuve de lavage (1).
  7. Procédé de lavage selon la revendication 5 ou 6, caractérisé en ce que pendant une opération de régénération (ΔtR), la quantité d'eau (m2) stockée dans le moyen de séchage est ramenée en retour dans la cuve de lavage (1) comme vapeur d'eau chauffée qui échauffe le liquide de lavage à une température (T1), notamment pendant l'étape de nettoyage (T).
  8. Procédé de lavage selon l'une quelconque des revendications précédentes, caractérisé en ce que le liquide de lavage échauffé à la température (T1) continue d'être échauffé à la première ou la deuxième température de lavage (TR1, TR2) au moyen d'un chauffage à eau (12) ménagé dans le circuit du liquide de lavage.
  9. Procédé de lavage selon l'une quelconque des revendications précédentes, caractérisé en ce que la première température (TR1) est située dans un ordre de grandeur allant de 45 à 55°C dans le premier mode de fonctionnement (I) et en ce que la deuxième température (TR2) est située dans une plage allant de 60 à 65°C dans le deuxième mode de fonctionnement (II).
  10. Lave-vaisselle destiné à la réalisation du procédé de lavage selon l'une quelconque des revendications précédentes.
EP09780593.1A 2008-07-23 2009-07-15 Procédé de rinçage pour un appareil ménager avec circuit d'eau Active EP2326230B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09780593T PL2326230T3 (pl) 2008-07-23 2009-07-15 Sposób płukania dla prowadzącego wodę urządzenia gospodarstwa domowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008040650A DE102008040650A1 (de) 2008-07-23 2008-07-23 Spülverfahren für ein wasserführendes Haushaltsgerät
PCT/EP2009/059019 WO2010010013A1 (fr) 2008-07-23 2009-07-15 Procédé de rinçage pour un appareil ménager avec circuit d'eau

Publications (2)

Publication Number Publication Date
EP2326230A1 EP2326230A1 (fr) 2011-06-01
EP2326230B1 true EP2326230B1 (fr) 2018-02-07

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Application Number Title Priority Date Filing Date
EP09780593.1A Active EP2326230B1 (fr) 2008-07-23 2009-07-15 Procédé de rinçage pour un appareil ménager avec circuit d'eau

Country Status (10)

Country Link
US (1) US20110108065A1 (fr)
EP (1) EP2326230B1 (fr)
JP (1) JP2011528595A (fr)
CN (1) CN102098952B (fr)
AU (1) AU2009273323B2 (fr)
DE (1) DE102008040650A1 (fr)
NZ (1) NZ589855A (fr)
PL (1) PL2326230T3 (fr)
RU (1) RU2503397C2 (fr)
WO (1) WO2010010013A1 (fr)

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Also Published As

Publication number Publication date
JP2011528595A (ja) 2011-11-24
CN102098952A (zh) 2011-06-15
CN102098952B (zh) 2014-08-20
US20110108065A1 (en) 2011-05-12
EP2326230A1 (fr) 2011-06-01
RU2011102832A (ru) 2012-08-27
PL2326230T3 (pl) 2018-07-31
RU2503397C2 (ru) 2014-01-10
AU2009273323B2 (en) 2014-06-05
WO2010010013A1 (fr) 2010-01-28
DE102008040650A1 (de) 2010-01-28
AU2009273323A1 (en) 2010-01-28
NZ589855A (en) 2013-03-28

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