EP2323533B1 - Procédé de lavage pour un appareil ménager à circulation d'eau, en particulier pour un lave-vaisselle - Google Patents

Procédé de lavage pour un appareil ménager à circulation d'eau, en particulier pour un lave-vaisselle Download PDF

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Publication number
EP2323533B1
EP2323533B1 EP09780922A EP09780922A EP2323533B1 EP 2323533 B1 EP2323533 B1 EP 2323533B1 EP 09780922 A EP09780922 A EP 09780922A EP 09780922 A EP09780922 A EP 09780922A EP 2323533 B1 EP2323533 B1 EP 2323533B1
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EP
European Patent Office
Prior art keywords
rinsing
temperature
water
cleaning
heated
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
EP09780922A
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German (de)
English (en)
Other versions
EP2323533A2 (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
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.)
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Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL09780922T priority Critical patent/PL2323533T3/pl
Publication of EP2323533A2 publication Critical patent/EP2323533A2/fr
Application granted granted Critical
Publication of EP2323533B1 publication Critical patent/EP2323533B1/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
    • A47L15/0002—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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • A47L15/0015—Washing processes, i.e. machine working principles characterised by phases or operational steps other treatment phases, e.g. steam or sterilizing phase
    • 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
    • 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
    • A47L2401/10—Water cloudiness or dirtiness, e.g. turbidity, foaming or level of bacteria
    • 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 household appliance, in particular a dishwasher, according to the preamble of claim 1.
  • a rinsing method is for example from the DE 44 15 823 A1 known.
  • 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.
  • 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 is based on 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, in which In at least one partial program step of a first rinse cycle, rinse liquid is heated in a first mode to a first temperature.
  • This can be a rinse
  • a plurality of partial program steps such as pre-rinsing, cleaning, intermediate rinsing, rinsing and drying, which are carried out successively for cleaning items to be washed.
  • 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.
  • fat deposits and / or deposited impurities are detected in the hydraulic system and compared with a desired specification. On the basis of the comparison, the first or second operating mode is then selected.
  • the second operating mode with the correspondingly elevated temperature can take place after a predetermined number of rinses operated in the first operating mode.
  • the dishwasher can thus normally perform rinses that work at a low temperature profile with reduced process temperatures.
  • the control device of the dishwasher can interpose a rinse, which operates in the second mode, ie with a high-temperature profile with higher process temperatures.
  • a coating sensor For monitoring the fat deposits or impurities, a coating sensor can be provided, which covers a deposit formation in the pipe system of the dishwasher and compares the detected actual coating with a desired specification. Based on this comparison, the first or second mode can be selected. According to the invention, the energy consumption of the dishwasher can thus be reduced in the arithmetic mean, that is to say over a plurality of rinse cycles.
  • 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.
  • Fig. 1 is roughly schematically shown 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.
  • 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 again.
  • 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
  • an air stream heated by the heating element 24 to high temperatures is passed through the sorption column 22 by means of the blower 23, 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 which is circulated in the liquid circuit of the dishwasher by means of the circulating pump 13, is known to be heated to a cleaning temperature in a heating phase ⁇ t H.
  • 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.
  • the second heating element 24 that is the Air heating
  • 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 mode I has the disadvantage that during the rinse cycle no correspondingly high-temperature rinsing liquid in Hydraulic system circulates, which prevents the formation of deposits by fat deposits 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.
  • a covering sensor 26 is provided, which is in signal connection with the control device 25.
  • the lining sensor 26 and the control device 25 can be integrated in a control loop, in which the second operating mode (II) is selected only when a predetermined degree of contamination is reached. Accordingly, in the arithmetic mean, that is, in a series of rinses performed, the energy consumption of the dishwasher can be reduced.

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  • Washing And Drying Of Tableware (AREA)
  • Sliding-Contact Bearings (AREA)

Claims (11)

  1. Procédé de lavage pour un appareil ménager à circulation d'eau, en particulier pour un lave-vaisselle, qui présente en particulier un dispositif de séchage (22) présentant un moyen de séchage déshydratable de façon réversible, dans lequel du liquide de lavage est réchauffé dans un premier mode de service (I) jusqu'à une première température (TR1) dans au moins une étape de programme partiel (R) d'une première opération de lavage, caractérisé par les étapes suivantes :
    - enregistrement d'une formation de revêtement dans l'appareil ménager à circulation d'eau au moyen d'un capteur de revêtement (26) disposé dans le système hydraulique
    - comparaison avec une spécification prévue pour la formation du revêtement, et
    - en cas de dépassement de la spécification prévue, mise en oeuvre d'une opération de lavage dans un second mode de service (II), pendant laquelle du liquide de lavage est réchauffé jusqu'à une seconde température (TR2) élevée par rapport la première température (TR1).
  2. Procédé de lavage selon la revendication 1, caractérisé en ce que des dépôts de graisse ou des impuretés déposées sont détectés au moyen du capteur de revêtement (26).
  3. Procédé de lavage selon la revendication 1 ou 2, caractérisé en ce que l'étape de programme partiel (R) pouvant être exploitée dans le premier ou le second mode de service (I, II) est une étape de nettoyage dans laquelle la première et la seconde température (TR1, TR2) correspondent respectivement à la température de nettoyage.
  4. Procédé de lavage selon la revendication 1, 2 ou 3 caractérisé en ce que la seconde température (TR2) de l'étape de programme partiel (R) utilisée dans le second mode de service (II) est majorée de telle sorte que des dépôts de graisse et/ou des impuretés sont dissous dans le système hydraulique, et en particulier la température majorée (TR2) se situe aux environs de 60 à 65°C.
  5. Procédé de lavage selon l'une des revendications 3 ou 4, caractérisé en ce que les températures des étapes de programme partiel (V, Z, K, T) survenant avant ou après l'étape de nettoyage (R), en particulier le prélavage, le lavage intermédiaire, le rinçage et le séchage, sont inférieures à la première ou la seconde température de nettoyage (TR1, TR2).
  6. Procédé de lavage selon l'une des revendications précédentes, caractérisé en ce que l'air se trouvant dans le réservoir de lavage (1) est guidé lors de l'étape de séchage (T) à travers le système de séchage (22) présentant un moyen de séchage déshydratable de façon réversible.
  7. Procédé de lavage selon la revendication 6, caractérisé en ce que de l'air est guidé à la sortie du système de séchage (22) pour revenir dans le réservoir de lavage (1).
  8. Procédé de lavage selon la revendication 6 ou 7, caractérisé en ce que, dans une opération de régénération (ΔtR), la quantité d'eau (m2) stockée dans le moyen de séchage est recyclée en tant que vapeur d'eau réchauffée dans le réservoir de lavage (1), lequel réchauffe le liquide de lavage jusqu'à une température (T1) en particulier lors de l'étape de nettoyage (T).
  9. Procédé de lavage selon l'une des revendications précédentes, caractérisé en ce que l'unité de lavage réchauffée à la température (T1) est réchauffée encore jusqu'à la première ou la seconde température de nettoyage (TR1, TR2) au moyen d'un chauffage d'eau (12) prévu dans le circuit du liquide de lavage.
  10. Procédé de lavage selon l'une des revendications précédentes, caractérisé en ce que la première température (TR1) dans le premier mode de service (I) se situe aux environs de 45 à 55°C et la seconde température (TR2) dans le second mode de service (II) dans la plage allant de 60 à 65°C.
  11. Lave-vaisselle pour la mise en oeuvre du procédé de lavage selon l'une des revendications 1 à 10.
EP09780922A 2008-07-23 2009-07-22 Procédé de lavage pour un appareil ménager à circulation d'eau, en particulier pour un lave-vaisselle Active EP2323533B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09780922T PL2323533T3 (pl) 2008-07-23 2009-07-22 Sposób zmywania w używającym wodę urządzeniu gospodarstwa domowego, w szczególności w maszynie do zmywania naczyń

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202008017432U DE202008017432U1 (de) 2008-07-23 2008-07-23 Wasserführendes Haushaltsgerät, insbesondere eine Geschirrspülmaschine
DE102008040651A DE102008040651B3 (de) 2008-07-23 2008-07-23 Spülverfahren für ein wasserführendes Haushaltsgerät, insbesondere eine Geschirrspülmaschine
PCT/EP2009/059420 WO2010010115A2 (fr) 2008-07-23 2009-07-22 Procédé de lavage pour un appareil ménager à circulation d'eau, en particulier pour un lave-vaisselle

Publications (2)

Publication Number Publication Date
EP2323533A2 EP2323533A2 (fr) 2011-05-25
EP2323533B1 true EP2323533B1 (fr) 2011-12-21

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EP09780922A Active EP2323533B1 (fr) 2008-07-23 2009-07-22 Procédé de lavage pour un appareil ménager à circulation d'eau, en particulier pour un lave-vaisselle

Country Status (12)

Country Link
US (1) US8888927B2 (fr)
EP (1) EP2323533B1 (fr)
JP (1) JP2011528598A (fr)
CN (1) CN102105091A (fr)
AT (1) ATE537745T1 (fr)
AU (1) AU2009273247B2 (fr)
DE (2) DE102008040651B3 (fr)
ES (1) ES2375915T3 (fr)
NZ (1) NZ590439A (fr)
PL (1) PL2323533T3 (fr)
RU (1) RU2500332C2 (fr)
WO (1) WO2010010115A2 (fr)

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Also Published As

Publication number Publication date
CN102105091A (zh) 2011-06-22
RU2500332C2 (ru) 2013-12-10
PL2323533T3 (pl) 2012-05-31
EP2323533A2 (fr) 2011-05-25
US8888927B2 (en) 2014-11-18
ATE537745T1 (de) 2012-01-15
WO2010010115A3 (fr) 2010-09-16
US20110114126A1 (en) 2011-05-19
RU2011103712A (ru) 2012-08-27
DE202008017432U1 (de) 2009-12-03
ES2375915T3 (es) 2012-03-07
AU2009273247A1 (en) 2010-01-28
AU2009273247B2 (en) 2014-07-03
JP2011528598A (ja) 2011-11-24
DE102008040651B3 (de) 2010-04-15
NZ590439A (en) 2013-05-31
WO2010010115A2 (fr) 2010-01-28

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