EP2352412A2 - Procédé pour faire fonctionner un lave-vaisselle - Google Patents

Procédé pour faire fonctionner un lave-vaisselle

Info

Publication number
EP2352412A2
EP2352412A2 EP09736942A EP09736942A EP2352412A2 EP 2352412 A2 EP2352412 A2 EP 2352412A2 EP 09736942 A EP09736942 A EP 09736942A EP 09736942 A EP09736942 A EP 09736942A EP 2352412 A2 EP2352412 A2 EP 2352412A2
Authority
EP
European Patent Office
Prior art keywords
during
temperature
liquid
program step
dishwasher
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.)
Withdrawn
Application number
EP09736942A
Other languages
German (de)
English (en)
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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2352412A2 publication Critical patent/EP2352412A2/fr
Withdrawn legal-status Critical Current

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
    • A47L15/4285—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
    • A47L15/0005—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
    • A47L15/0002—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
    • 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
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/02—Pressurised cleaning liquid delivered by a pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the invention relates to a method for operating a 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. cleaning or rinsing
  • liquid e.g. heated with a heater designed as a water heater.
  • the cleaning performance should be increased, while the program step rinse by the application of heated liquid, such as. with rinse aid added water, the drying of cleaned items to be improved or accelerated in the subsequent program step drying.
  • the invention has for its object to reduce the energy consumption with constant cleaning and drying results.
  • the invention is based on a method for operating a dishwasher, in particular a domestic dishwasher, in which a plurality of program steps are passed, of which at least one program step liquid is heated to a maximum temperature, and in a further program step rinse liquid a maximum Rinse temperature reached.
  • liquid is heated to a maximum temperature that is substantially equal to or higher than the maximum rinse temperature. This allows for a particularly energy-efficient cleaning of items to be washed, at the same time the items to be washed by the low
  • a substantially identical temperature is understood to mean that the temperatures are, for example, due to manufacturing tolerances and / or natural deviations slightly differ during operation, eg around 5 to 10 0 C.
  • the maximum temperature is higher than the maximum rinse temperature on the
  • Liquid is heated in the program step rinsing. In doing so, e.g. due to particularly high temperatures in the cleaning program step compared to the program step
  • Rinse a particular high cleaning performance achieved because an optimum temperature is achieved in which in the program step cleaning added detergents to maximize their effect, the energy required for rinsing is reduced.
  • the maximum temperature is substantially between 5 and 50 0 C, in particular between 10 and 30 0 C higher than the maximum rinse temperature is heated to the liquid in the program step rinse.
  • pre-rinse the maximum temperature is higher than the maximum rinse temperature, is heated to the liquid in the program step rinse. This allows the cleaning result to be further improved, since the elevated liquid temperature allows the removal line to be further increased during the program step of pre-rinsing without the addition of detergent.
  • the maximum temperature is substantially between 1 and 20 ° C, in particular between 5 and 10 0 C higher than the maximum rinse temperature is heated to the liquid in the program step rinse.
  • a development is provided that during at least one program step intermediate rinsing the maximum temperature substantially between 1 and 20 0 C, especially between 5 and 10 0 C higher than the maximum rinse temperature is heated to the liquid in the program step rinse.
  • Sorption drying system during during a drying process in
  • Drying material stored moisture is then expelled again by introducing heat energy, wherein the expended for expelling thermal energy is also used for heating of items to be washed and / or liquid.
  • liquid stored in a water tank of the dishwasher is used in at least one of the program steps.
  • a water tank can with the environment of the dishwasher in heat-conducting
  • Water from a home-based supply system can warm to room temperature. If the liquid stored in the water tank is e.g. In a pre-rinse program step, this increases the cleaning effect and reduces the overall energy requirement again.
  • the object of the invention is achieved by a dishwasher, in particular domestic dishwasher, with heating means for at least temporarily heating liquid to a maximum temperature during a program step of a plurality of program steps, and designed to carry out another Program step rinsing, wherein the liquid reaches a maximum rinse temperature, wherein according to the invention that during at least one of the program steps liquid has a maximum temperature which is higher than the maximum rinse temperature.
  • FIG. 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.
  • a door (not shown) pivotably hinged to the dishwasher GS.
  • baskets GK for receiving too cleaning items provided which can be pulled out of the interior IR of the dishwasher GS 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, among other components components of the dishwasher.
  • a circulation pump UP In operation, i. when the circulation pump UP is running, the 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 In order to heat the liquid circulated by the operation of the circulating pump UP, 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 for emptying the interior IR of the dishwasher GS.
  • a drain pump LP For emptying the interior IR of the dishwasher GS, 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 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.
  • 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 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
  • Drying material ZEO stored amount of water 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 in the water tank cached liquid, such as water from a home-side supply system, can warm 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 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.
  • 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, For example, continuously, until the circulating pump runs again in a run-out condition, ie, does not suck in air bubbles during operation, which reduces the flow rate of the circulation pump UP and leads to an 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.
  • 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.
  • 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 through the interior IR of the dishwasher GS and the sorption 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.
  • 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
  • a temperature T4 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, notamment un lave-vaisselle ménager, consistant à exécuter plusieurs étapes de programme (V, R, Z, K, T). Au cours d'au moins une étape de programme (V, R, Z), du liquide est chauffé à une température maximale (T1', T2, T3'), et au cours d'une autre étape de programme (rinçage final (K)), le liquide atteint une température de rinçage final maximale (T4, T5). Selon l'invention, au cours d'au moins une étape de programme (V, R, Z), du liquide est chauffé à une température maximale (T1', T2, T3') essentiellement supérieure ou égale à la température de rinçage final maximale (T4, T5).
EP09736942A 2008-11-07 2009-10-16 Procédé pour faire fonctionner un lave-vaisselle Withdrawn EP2352412A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008043573A DE102008043573A1 (de) 2008-11-07 2008-11-07 Verfahren zum Betreiben einer Geschirrspülmaschine
PCT/EP2009/063605 WO2010052118A2 (fr) 2008-11-07 2009-10-16 Procédé pour faire fonctionner un lave-vaisselle

Publications (1)

Publication Number Publication Date
EP2352412A2 true EP2352412A2 (fr) 2011-08-10

Family

ID=42096197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09736942A Withdrawn EP2352412A2 (fr) 2008-11-07 2009-10-16 Procédé pour faire fonctionner un lave-vaisselle

Country Status (3)

Country Link
EP (1) EP2352412A2 (fr)
DE (1) DE102008043573A1 (fr)
WO (1) WO2010052118A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPR20120094A1 (it) * 2012-12-28 2014-06-29 Indesit Co Spa Macchina lavastoviglie e programma di lavaggio

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3330537A1 (de) * 1983-08-24 1985-03-14 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren und geschirrspuelmaschine zum reinigen von geschirr
DE19651344A1 (de) * 1996-12-10 1998-06-25 Bosch Siemens Hausgeraete Verfahren zum Betreiben einer Geschirrspülmaschine
US20050022847A1 (en) * 2003-07-31 2005-02-03 Hideyuki Nito Dish washing machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316716C2 (de) * 1983-05-06 1985-11-07 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren zur Rückgewinnung von Abwärme bei einer Haushalt-Geschirrspülmaschine sowie derartige Maschine zur Durchführung des Verfahrens
DE3641111A1 (de) * 1986-12-02 1988-06-16 Bosch Siemens Hausgeraete Verfahren zum betrieb einer haushalt-geschirrspuelmaschine
ITPN940011A1 (it) * 1994-02-25 1995-08-25 Zanussi Elettrodomestici Lavatrice con sistema di recupero dell'acqua
DE102004057019A1 (de) * 2004-11-25 2006-06-01 BSH Bosch und Siemens Hausgeräte GmbH Wasserführendes Haushaltgerät mit einem Vorratsbehälter
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3330537A1 (de) * 1983-08-24 1985-03-14 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Verfahren und geschirrspuelmaschine zum reinigen von geschirr
DE19651344A1 (de) * 1996-12-10 1998-06-25 Bosch Siemens Hausgeraete Verfahren zum Betreiben einer Geschirrspülmaschine
US20050022847A1 (en) * 2003-07-31 2005-02-03 Hideyuki Nito Dish washing machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010052118A2 *

Also Published As

Publication number Publication date
DE102008043573A1 (de) 2010-05-12
WO2010052118A2 (fr) 2010-05-14
WO2010052118A3 (fr) 2010-09-23

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