WO2001076447A2 - Procede pour faire fonctionner un lave-vaisselle - Google Patents

Procede pour faire fonctionner un lave-vaisselle Download PDF

Info

Publication number
WO2001076447A2
WO2001076447A2 PCT/EP2001/003486 EP0103486W WO0176447A2 WO 2001076447 A2 WO2001076447 A2 WO 2001076447A2 EP 0103486 W EP0103486 W EP 0103486W WO 0176447 A2 WO0176447 A2 WO 0176447A2
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning fluid
gaseous medium
liquid
pressure
valve
Prior art date
Application number
PCT/EP2001/003486
Other languages
German (de)
English (en)
Other versions
WO2001076447A3 (fr
Inventor
Rüdiger EIERMANN
Hans-Peter Nannt
Helmut Jerg
Ignacio Perez-Nivela
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to AT01933763T priority Critical patent/ATE258760T1/de
Priority to DE50101449T priority patent/DE50101449D1/de
Priority to EP01933763A priority patent/EP1296586B1/fr
Priority to AU60160/01A priority patent/AU6016001A/en
Publication of WO2001076447A2 publication Critical patent/WO2001076447A2/fr
Priority to US10/008,333 priority patent/US20020083966A1/en
Publication of WO2001076447A3 publication Critical patent/WO2001076447A3/fr

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
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • 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
    • A47L2601/03—Pressurised, gaseous medium, also used for delivering of cleaning liquid

Definitions

  • the invention relates to a method for operating a dishwasher in which a cleaning liquid is applied to the items to be cleaned
  • a cleaning liquid which normally consists of water, possibly with the addition of detergent or rinse aid
  • This cleaning fluid is usually required by means of a circulation pump, which can be designed, for example, as a centrifugal pump, from a constantly refilling storage container via liquid feed lines to flushing devices, by means of which the liquid is applied to the items to be cleaned
  • a sufficient cleaning result is achieved with such an exposure to the goods to be cleaned by the amount of chemical additives that can be added to the cleaning liquid, but mainly by a sufficient duration of exposure to the goods to be cleaned and the mechanical removal of this over the period of time Soiling achieved on the items to be cleaned.
  • the cleaning program has a long duration
  • the liquid In conventional pumping methods, e.g. with ordinary pumps, the liquid must flow into the pump from its own hydrostatic pressure from a reservoir.
  • the active moving part of the pump in the case of the centrifugal pump the impeller, creates a vacuum and sucks the liquid into the pump Vacuum is limited by the inflow of the liquid if the hydrostatic pressure on the suction side is not is sufficient to press a sufficient amount of liquid into the pump and limit the above-mentioned negative pressure, the absolute pressure which arises at the suction nozzle can drop below the vapor pressure of the liquid, with the result that the liquid evaporates and now steam, instead of the liquid, gets into the pump This has the consequence that the demand drops to a fraction of the intended amount. Furthermore, this process - called cavitation - results in excessive noise, which is caused by condensation of the vapor bubbles
  • the invention is therefore based on the object of providing a method for operating a dishwasher of the type mentioned at the outset in which energy and water can be saved and no special feed requirements have to be met for its use
  • This object is achieved according to the invention in that the cleaning fluid is required by means of a pressurized, gaseous conveying medium
  • the cleaning fluid is required at a time interval by means of a pressurized, gaseous conveying medium.
  • the pressure in the acting cleaning fluid as well as at each end of the loading begins to increase Applying a drop in pressure in the pressurizing cleaning fluid.
  • the requirement of the cleaning fluid takes place impulsively, with which the alternating increase and decrease in the pressure of the cleaning fluid and the alternating increase and decrease in the mechanical forces acting on the contaminants on the material to be cleaned takes place in a very short period of time.
  • the ratio of the duration of the time interval between the requirements of the cleaning fluid to the duration of the requirement of the cleaning fluid is approximately 3 1, and according to an advantageous embodiment of the invention the duration of the requirement is approximately 0.5 seconds very short pulse duration, the cleaning effect of the cleaning fluid applied under pressure to the material to be cleaned is optimized
  • the gaseous conveying medium is demanded by means of a clocked pumping process
  • the cycled pumping method is achieved in that the gaseous medium is pumped by means of a pump working in one cycle, for example a piston or diaphragm pump, etc.
  • gaseous conveying medium can also be introduced in a clocked manner from a supply source in order to apply the cleaning fluid
  • the cleaning fluid is required by means of a cyclic plug method in which the cleaning fluid is pressurized by the gaseous medium, which is alternately changed between two pressure levels so that suction is sucked in at a low pressure level with a negative pressure and by applying the higher pressure level at which there is an overpressure, the cleaning fluid is required in the desired direction.
  • the cleaning fluid can be sucked in in sufficient quantity despite the low inlet height.
  • the gaseous medium is passed into a treatment room of the dishwasher, whereby the gaseous medium which is present anyway - the air - when drying by blowing off the moisture remaining on the items to be cleaned, the drying result improved and the duration of the sub-program "drying" significantly reduced
  • FIG. 1 shows a schematic representation of a domestic dishwasher with a device for carrying out the method according to the invention
  • Fig. 2 is a schematic representation of the device for performing the method according to the invention.
  • the method according to the invention is described in a household dishwasher 25 shown in FIG. 1, in which a device 1 for carrying out the method according to the invention is installed.
  • the cleaning fluid is the same as that used in the household dishwasher 25
  • Goods not shown to be cleaned are charged with water, which may be mixed with detergent or rinse aid and may also be contaminated with removed food residues
  • the household dishwasher 25 has a bobbin holder 26 for storing and winding items not to be cleaned, which can be closed in the bobbin holder 26 by a door (not described in more detail in the case of household dishwashing machines usually about a horizontal axis)
  • Crockery baskets 27, 28 are arranged, into which the items not shown, for example cutlery, plates, cups, glasses, etc., are placed, which are supplied with the cleaning fluid by spraying means, eg so-called spraying arms 29, 30 according to the inventive method
  • spraying means eg so-called spraying arms 29, 30 according to the inventive method
  • the cleaning fluid is demanded by means of a pressurized, gaseous conveying medium, in the described exemplary embodiment of the inventive method at intervals and in pulses.
  • the gaseous conveying medium in the described exemplary embodiment is air.
  • the method according to the invention is described by means of a clocked pumping method Execution process required by means of a cycle plug procedure, in a device 1 described below, which can best be seen in FIG. 2
  • the device 1 for requesting the cleaning fluid in the exemplary embodiment shown has an arrangement 10 in which the gaseous delivery medium is pressurized by means of a compressor 2 in the direction of flow of the gaseous delivery medium after the compressor 2, that is to say at a pressure outlet 3 of the compressor a pressure vessel 4 is connected, in which the gaseous medium is introduced and stored
  • the arrangement 10 has a pressure chamber 11 connected to the pump bowl 9 in a fluid-conducting manner.
  • the gaseous medium controlled by a valve 5, is introduced into the pressure chamber 11.
  • This valve 5 for controlling the introduction of the gaseous medium into the pressure chamber 11 is arranged in the exemplary embodiment described in a connecting line 21 between the pressure vessel 4 and an inlet 20 of the gaseous conveying medium into the pressure chamber 11 with the pressure chamber 11 and the pump pot 9 a liquid drainage device 12 connected in a liquid-conducting manner
  • a liquid line 13 is continued from the pump bowl 9 to the liquid drain 12, which has a branch 14 to the pressure chamber 11.
  • a valve 15 is openable in the exemplary embodiment described and closing the connection between the pump chamber 9 and the pressure chamber 11 arranged, which in the exemplary embodiment is a check valve with a spherical closing body, which closes a liquid outlet from the pump chamber 9 when a flow directed against the pump chamber 9 occurs between the pressure chamber 11 and the liquid drain
  • a valve 16 for opening and closing the liquid discharge line 12 is arranged, which in the exemplary embodiment is a non-return valve with a spherical closing body, which the liquid discharge line 12 occurs when a flow against the P Umpentopf 9 or flow directed against the liquid drain 12 closes
  • the pressure chamber 11 has a further inlet 18 controlled by a valve 17, to which an exhaust line 19 is connected.
  • the entry 20 of the gaseous medium into the pressure chamber 11 is in the position of use, ie from the front View of Figures 1 and 2, above and the inlet of the liquid line 13, ie the branch 14, arranged below
  • the arrangement further has a connection 22 between the liquid discharge line 12 and the compressor 2 for the gaseous medium, in the exemplary embodiment shown between the liquid discharge line 12 and the pressure vessel 4
  • a further valve 6 for controlling the introduction of the gaseous medium into the liquid discharge line 12 is arranged.
  • connection 23 between the pressure chamber 11 and a suction line 7 of the compressor rs 2, wherein the suction line 7 of the compressor 2 in the flow direction of the gaseous medium before the branch for the connection 23 with the valve 17, further with a valve 17 controlled inlet 20 of the pressure chamber 11 a further valve 8 for opening or closing the suction line 7 compared to the environment
  • the method according to the invention for operating a dishwasher 25 and the impulse-like requirement of the cleaning fluid then carried out, in which the cleaning fluid in the arrangement is alternately subjected to a negative pressure and an excess pressure at a time interval in the exemplary embodiment with the device 1 explained executed as follows
  • the valves 5, 6, 8 and 16 are initially closed, the valves 15 and 17 are open.
  • the liquid extends in the pump bowl 9 to the liquid level N1 and in the pressure chamber 11 due to the suction function of the vacuum described below to the much higher one Liquid level N1 'By closing the valve 17 and simultaneously opening the valve 5, the gaseous medium under pressure is introduced into the pressure chamber 11, whereby the liquid is displaced to a lower liquid level N2.
  • valve 15 is closed and the valve 16 opened so that the liquid continues to penetrate the liquid discharge line 12, an equal amount of liquid being moved from the liquid discharge line 12 to the spray arms 29, 30.
  • the valve 8 is also opened so that the compressor 2 Gas can suck in and a pressure and quantity compensation of the gas takes place now wi rd the valve 5 is closed and the further valve 6 for controlling the introduction of the gaseous delivery medium into the liquid discharge line 12 is opened - or, in reverse order, the further valve 6 for controlling the introduction of the gaseous delivery medium into the liquid discharge line can be opened first 12 are opened and then the valve 5 is closed - as a result of which the gaseous medium is passed into the liquid discharge line 12 in both alternative method steps and the second application of the higher pressure level for pressurizing the liquid with an overpressure takes place, as a result of which the pressure in the liquid discharge line 12 is reprinted Liquid is brought about, so that liquid is again moved to the spray arms 29, 30.
  • valve 16 is closed. Now the valve 6 and the valve 8 are closed and the valve 17 is opened, as a result of which the gaseous conveying medium in the pressure chamber 11 is released - management device 19 and the suction line 7 is passed to the compressor 2 and a negative pressure in the pressure chamber 1 1 is created by the negative pressure or, in the event that the valve 15 is not a check valve, by external control, the valve 15 now opens, so that liquid is sucked from the pump bowl 9 into the pressure chamber 11 by the negative pressure prevailing in the pressure chamber 11.
  • the valve 16 is kept in the closed position. Now the valve 17 is closed and at the same time the valve 8 is opened again. This process is now required as long as the liquid is required Repeatedly before the valve 5 is opened again for introducing the pressurized gaseous medium into the pressure chamber 11, the exemplary embodiment described game of the inventive method paused about half a second
  • FIG. 3 The time course of a spray pulse generated with the method described above is shown in FIG. 3, the figure showing the time course and the water pressure generated from the time the valve 17 was opened for sucking the cleaning fluid into the pressure chamber 11 Suction is denoted by Ts in FIG. 3 and is approximately one second. In the exemplary embodiment described, a pause is now made over a period of time Tp of approximately half a second.
  • the pulse-like requirement of the cleaning fluid follows by opening the valve 5 with a pulse height If of in the exemplary embodiment approx. 310 millibars and the reprinting by opening the valve 6 with a pulse height In of in the exemplary embodiment an additional approx.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un lave-vaisselle dans lequel les objets à nettoyer sont exposés à un liquide de nettoyage. L'invention vise à créer un procédé permettant d'économiser de l'énergie et de l'eau, et dont la mise en oeuvre ne nécessite pas le respect de conditions particulières d'alimentation. A cet effet, le liquide de nettoyage est acheminé au moyen d'un fluide d'acheminement gazeux, sous pression.
PCT/EP2001/003486 2000-04-06 2001-03-27 Procede pour faire fonctionner un lave-vaisselle WO2001076447A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT01933763T ATE258760T1 (de) 2000-04-06 2001-03-27 Verfahren zum betreiben einer geschirrspülmaschine
DE50101449T DE50101449D1 (de) 2000-04-06 2001-03-27 Verfahren zum betreiben einer geschirrspülmaschine
EP01933763A EP1296586B1 (fr) 2000-04-06 2001-03-27 Procede pour faire fonctionner un lave-vaisselle
AU60160/01A AU6016001A (en) 2000-04-06 2001-03-27 Method for operating a dishwashing machine
US10/008,333 US20020083966A1 (en) 2000-04-06 2001-12-06 Method of operating a dishwasher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10017243.1 2000-04-06
DE10017243A DE10017243A1 (de) 2000-04-06 2000-04-06 Verfahren zum Betreiben einer Geschirrspülmaschine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/008,333 Continuation US20020083966A1 (en) 2000-04-06 2001-12-06 Method of operating a dishwasher

Publications (2)

Publication Number Publication Date
WO2001076447A2 true WO2001076447A2 (fr) 2001-10-18
WO2001076447A3 WO2001076447A3 (fr) 2002-04-11

Family

ID=7637866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/003486 WO2001076447A2 (fr) 2000-04-06 2001-03-27 Procede pour faire fonctionner un lave-vaisselle

Country Status (8)

Country Link
US (1) US20020083966A1 (fr)
EP (1) EP1296586B1 (fr)
CN (1) CN1148149C (fr)
AT (1) ATE258760T1 (fr)
AU (1) AU6016001A (fr)
DE (2) DE10017243A1 (fr)
ES (1) ES2215899T3 (fr)
WO (1) WO2001076447A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007017283B4 (de) 2007-04-12 2009-01-29 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zum Sperren eines Fluiddurchtritts durch ein rohrförmiges Teil mittels eines Rückschlagventils, insbesondere in einem Hausgerät
EP2009165A1 (fr) * 2007-06-28 2008-12-31 Bonferraro S.p.A. Cycle de fonctionnement de pompe de drainage d'un appareil de lavage domestique
US10893790B2 (en) * 2016-06-23 2021-01-19 Illinois Tool Works Inc. Warewasher with air assisted prescrapping

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124528A (fr) * 1955-04-05 1956-10-12 Pompe à liquide fonctionnant au gaz comprimé
DE1503853A1 (de) * 1965-05-03 1969-05-29 Neff Werke Geschirrspuelmaschine
GB1338607A (en) * 1971-06-12 1973-11-28 Kingsdown Instr Co Ltd Apparatus for dispensing a predetermined and variable volume of liquid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018872A1 (de) * 1980-05-16 1981-11-26 BHT Hygiene-Technik GmbH, 8000 München Verfahren zum reinigen von gegenstaenden und vorrichtung zur durchfuehrung des verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124528A (fr) * 1955-04-05 1956-10-12 Pompe à liquide fonctionnant au gaz comprimé
DE1503853A1 (de) * 1965-05-03 1969-05-29 Neff Werke Geschirrspuelmaschine
GB1338607A (en) * 1971-06-12 1973-11-28 Kingsdown Instr Co Ltd Apparatus for dispensing a predetermined and variable volume of liquid

Also Published As

Publication number Publication date
ES2215899T3 (es) 2004-10-16
CN1383370A (zh) 2002-12-04
ATE258760T1 (de) 2004-02-15
AU6016001A (en) 2001-10-23
EP1296586B1 (fr) 2004-02-04
CN1148149C (zh) 2004-05-05
US20020083966A1 (en) 2002-07-04
WO2001076447A3 (fr) 2002-04-11
DE10017243A1 (de) 2001-10-11
DE50101449D1 (de) 2004-03-11
EP1296586A2 (fr) 2003-04-02

Similar Documents

Publication Publication Date Title
DE4140949C2 (de) Niveausteuerung für eine Geschirrspülmaschine
EP3963263A1 (fr) Appareil de traitement à la vapeur et procédé de nettoyage d'un appareil de traitement à la vapeur
EP2786683B1 (fr) Système de production de vapeur pour appareil ménager de cuisson
EP2381827A2 (fr) Procédé de vidange d'un liquide d'un appareil électroménager à circulation d'eau
WO2001076447A2 (fr) Procede pour faire fonctionner un lave-vaisselle
EP3278031B1 (fr) Mise en oeuvre d'un cycle de nettoyage d'un appareil de cuisson
EP1272412B1 (fr) Procédé de transport répeté d'un fluide de rinçage
DE3410826C2 (de) Niveauregel- und Sicherheitsvorrichtung für Geschirrspül- und Waschmaschinen
EP2596734B1 (fr) Appareil ménager et procédé de commande pour un appareil ménager
DE4305880A1 (de) Haushaltsgerät, wie Geschirrspül- oder Waschmaschine
DE102010029730A1 (de) Geschirrspülmaschine mit einer dynamischen Füllsequenz
CH404106A (de) Programmgesteuerte Geschirrspülmaschine
CH574732A5 (en) Dish washing method and machine - drying air is contacted with cold water, fed in by water feed system
EP1272092B1 (fr) Dispositif de transport de matieres coulantes
EP3963264A1 (fr) Appareil de traitement à la vapeur et procédé pour faire fonctionner un appareil de traitement à la vapeur
EP2462809B1 (fr) Appareil de cuisson à vapeur
DE69932439T2 (de) Geschirrspülmaschine mit verbesserter trocknung
DE102011087855A1 (de) Wasserführendes Haushaltsgerät mit einer Vorrichtung zur Speicherung und Wiederverwendung von Spülflüssigkeit
CH421412A (de) Reinigungsautomat zum Waschen und Spülen von Geschirr, Kannen, Gläsern od. dgl. Artikel
EP1272091B1 (fr) Procede pour effectuer un nettoyage au moyen de jets de nettoyage
DE1628482A1 (de) Verfahren und Vorrichtung zum Reinigen von Spuelbehaeltern automatischer oder halbautomatischer Geschirrspuelmaschinen
EP1345525B1 (fr) Procede pour actionner un lave-vaisselle et lave-vaisselle correspondant
WO2021197797A1 (fr) Appareil ménager de traitement à la vapeur et procédé de nettoyage d'un vaporisateur
WO2005051159A1 (fr) Dispositif de dosage pour machine a laver la vaisselle
WO2023247080A1 (fr) Procédé de lavage à distribution discontinue de liquide de lavage, et lave-vaisselle

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 2001933763

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 10008333

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 018016189

Country of ref document: CN

AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 2001933763

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 2001933763

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP