EP0406682A1 - Procédé et dispositif pour le lavage de la vaisselle - Google Patents

Procédé et dispositif pour le lavage de la vaisselle Download PDF

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Publication number
EP0406682A1
EP0406682A1 EP90112227A EP90112227A EP0406682A1 EP 0406682 A1 EP0406682 A1 EP 0406682A1 EP 90112227 A EP90112227 A EP 90112227A EP 90112227 A EP90112227 A EP 90112227A EP 0406682 A1 EP0406682 A1 EP 0406682A1
Authority
EP
European Patent Office
Prior art keywords
dishes
cleaning solution
washing
zone
washing zone
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Withdrawn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
EP90112227A
Other languages
German (de)
English (en)
Inventor
Günter Tritschler
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0406682A1 publication Critical patent/EP0406682A1/fr
Withdrawn legal-status Critical Current

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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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
    • 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
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/247—Details specific to conveyor-type machines, e.g. curtains

Definitions

  • the invention relates to a method for washing dishes in a dishwasher having a washing zone, in which the prewashed dishes are treated in the washing zone with a highly concentrated detergent solution. It also relates to a dishwasher for performing the method.
  • the term "dishes" is understood to mean all objects to be cleaned in dishwashers, in particular plates, cups, cutlery and the like. In the present context, it is preferably a matter of commercial dishwashers through which the dishes are conveyed.
  • DE-OS 37 07 366 describes a method for the mechanical cleaning of tableware, in which the dishes are passed in succession through a prewash zone, a wash zone, a rinse zone and a rinse zone of the dishwasher. In the prewash zone, coarse food residues and the like are removed from the dishes with the help of overflow water from the wash zone.
  • the dishes are first sprayed with the highly concentrated detergent solution.
  • the latter consists, for example, of water, to which about 100 g of a powdered cleaner are added per liter.
  • the detached food residues are removed together with the sprayed-on detergent solution is still washed off in the washing zone with the help of a washing liquor supplied from spray nozzles.
  • the wash liquor should consist essentially of overflow water from the downstream clear wash zone.
  • the amount of detergent substrate used is reduced in terms of environmental protection compared to the case that the detergent is applied to the dishes together with the washing water, but the consumption is still considerable because of the Detergent film is still rinsed in the washing zone and is conveyed together with the washing water used for rinsing to the prewash zone and from there into the drain.
  • a major disadvantage of the known method is that the cleaning solution is sprayed onto the dishes in a fine mist. Since the cleaning agent is highly aggressive, effective seals against the fog in the machine and appropriate filters in its exhaust air system must be provided for safety reasons.
  • the invention has for its object to provide a dishwashing process in which the cleaning solution can flow in a highly concentrated form in large excess over the dishes to be cleaned without imposing an unacceptable burden on the wastewater, and in which special safety measures against atomized cleaning agents can be omitted.
  • the solution according to the invention for the above-mentioned method in which the dishes in the washing zone are treated with a highly concentrated detergent solution, is that the detergent solution is allowed to flow over the dishes and the detergent solution draining from the dishes is collected separately in the washing zone and in the circuit again on the dishes.
  • the overflow water conveyed in countercurrent to the direction of transport of the dishes is directed from the washing and rinsing of the dishes coming from the washing zone past the washing zone to the prewash area.
  • Mixing of the highly concentrated cleaning solution still flowing out in the washing zone with washing water is avoided, so that the concentration of the cleaning solution in its circulation cannot be directly impaired by the washing water conveyed in countercurrent.
  • a decrease in concentration occurs essentially only in that the dishes come from the prewashing stage into the washing zone with a film of washing water.
  • the running cleaning solution is temporarily stored in a stock liquor container which is switched into the circuit. If necessary, this makes it possible or easier to adapt the amount of detergent solution conveyed to the volume of the dishes supplied or the degree of soiling, and to regulate the concentration and amount of the detergent solution in the circuit.
  • a concentration measuring electrode can preferably be provided on the stock liquor container for regulating the concentration and a level electrode for regulating the amount of liquid.
  • the sensors can switch corresponding pumps, valves or the like to a cleaner tank or a fresh water supply.
  • the fresh water supply can end freely above the level in the base liquor container, so that a chemical tube separator (or the like) is not required.
  • the cleaning solution should flow in the washing zone almost without pressure with a large excess over the dishes.
  • the cleaning solution is therefore preferably applied to the dishes with only a slight excess pressure in the order of magnitude of 0.2-0.5 bar.
  • the solution according to the invention for the dishwasher mentioned at the outset for carrying out the aforementioned method is characterized by a collecting trough arranged in the washing zone and receiving the detergent solution draining from the dishes, with a drain to a stock solution container, preferably remaining outside the dishwasher.
  • a drip pan within the washing zone directly under the dishes sprinkled with the cleaning solution from different directions, for example from below and above, it is achieved that the cleaning solution flows off again apart from a film adhering to the pre-washed dishes and remains in the circuit according to the invention; the cleaning agent consumption thus remains minimal, despite a large excess of cleaning solution applied.
  • the master liquor container enables the concentration and the amount of detergent solution in the circuit to be monitored.
  • the cleaner solution is only gradually soiled because it hits pre-washed dishes.
  • the rate of soiling is counteracted by the amount of fresh water and concentrate to be replenished in accordance with the removal of detergent solution (in the form of a film on the dishes).
  • the master liquor container is arranged outside the machine, the associated sensors and the corresponding electronics can also remain outside.
  • the supply lines, in particular for the fresh water, can end freely above the liquid level of the base liquor container.
  • a pump is preferably provided for conveying the detergent solution from the stock liquor container to the washing zone, which pump can deliver a relatively large amount of detergent solution, possibly with food residues, at relatively low pressure.
  • This not only reduces the expenditure on equipment in the pump area, but also reduces the requirements placed on the sealing of the machine housing, because the cleaning agent is not sprayed or atomized and flowing cleaning agent is easier to screen than a mist.
  • nozzles with non-atomizing liquid outlets are used to apply the cleaning solution to the dishes.
  • Such nozzles have the further advantage that they cannot clog as easily as nebulization nozzles because of their large passage openings.
  • a clearing zone 4 In the dishwasher designated overall by 1, a clearing zone 4, a washing zone 5, a rinsing zone 6 and a rinsing zone 7 follow one another in the transport direction 2 of the dishes 3.
  • the resulting overflow water 9 can be used in the rinse zone 6 to rinse off the still adhering dirt and the film of concentrated detergent solution.
  • the resulting overflow water 10 can be passed past the washing zone 5 into the clearing zone 4 and used there for pre-washing the dishes 3.
  • the dishes 3 are overflowed with highly concentrated cleaning solution 11.
  • the cleaning solution 11 should preferably flow onto the dishes 3 in a wide jet from correspondingly large openings of nozzles, in particular also from above and below, and drain or drip in a collecting trough 13 (except for a film remaining on the dishes 3). From the drip pan 13, which is still arranged inside the dishwasher, the cleaning solution 11 is to reach a stock liquor container 15 via a drain line 14. From there, the cleaning solution 11 is to be pumped by means of a motor 16 17 are conveyed back to the nozzles 12 via a riser 18 on a circuit 19 indicated by arrows.
  • the drip pan 13 is preferably extended so far in the transport direction 2 that the essential part of the detergent solution 11 applied to the dishes 3 has dripped into the drip pan 13 during a predetermined exposure time and to the end point 20 of the latter.
  • a drain pump 21 is also expediently installed in the drain line 14. With a corresponding relative arrangement of the collecting trough 13, the base liquor container 15 and the nozzles 12, the pump 17 can be omitted under certain circumstances.
  • the concentration and the amount of the cleaning solution 11 in the circuit 19 are supplemented in a controlled manner.
  • a control unit 22 is provided with a connection to a cleaner concentrate container 23 and to a fresh water inlet 24.
  • the wiring is carried out in such a way that if the concentration of the cleaning solution 11 is too low - for example determined via a concentration sensor 25 - the control unit 22 of a hose metering pump 26 gives the concentrate container 23 an instruction to pump substance into the main solution container via a line 32.
  • an overflow pipe 29 can also be provided in the base liquor container 15. This, for example, with 220 V AC voltage via a feed line 30 supplied control unit 22 can also be used to control and regulate the pump motor 16 (via a line 31).
  • the dishes 3 to be washed are overflowed with cleaning solution 11 in the washing zone 5.
  • a suitable, highly concentrated cleaning solution preferably consists of water, to which 100 g of a cleaning agent have been added per liter. Powdery cleaners are just as suitable as liquid cleaners.
  • the cleaning solution should be so highly concentrated that it can also rinse starch adhering firmly to the dishes 3 in the washing zone 5 and can otherwise only be removed by a so-called basic cleaning.
  • the ability to safely remove fats, starches, dyes and protein determines the degree of concentration of the detergent solution and the duration of the exposure time.

Landscapes

  • Washing And Drying Of Tableware (AREA)
EP90112227A 1989-07-05 1990-06-27 Procédé et dispositif pour le lavage de la vaisselle Withdrawn EP0406682A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3922067 1989-07-05
DE19893922067 DE3922067A1 (de) 1989-07-05 1989-07-05 Verfahren zum spuelen von gebrauchsgeschirr und geschirrspuelmaschine zum durchfuehren des verfahrens

Publications (1)

Publication Number Publication Date
EP0406682A1 true EP0406682A1 (fr) 1991-01-09

Family

ID=6384332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112227A Withdrawn EP0406682A1 (fr) 1989-07-05 1990-06-27 Procédé et dispositif pour le lavage de la vaisselle

Country Status (2)

Country Link
EP (1) EP0406682A1 (fr)
DE (1) DE3922067A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992011796A1 (fr) * 1991-01-05 1992-07-23 Deutsche Lufthansa Aktiengesellschaft Procede pour le lavage de vaisselle dans de grandes installations
EP0499843A1 (fr) * 1991-02-20 1992-08-26 SOPURA CHEMIE GmbH Méthode et dispositif pour le nettoyage de bouteilles
EP0712599A1 (fr) 1994-11-18 1996-05-22 Epenhuysen Chemie N.V. Procédé mécanique de nettoyage de la vaisselle
NL1006700C2 (nl) * 1997-07-31 1999-02-02 Epenhuysen Chem Nv Machinale vaatwaswerkwijze, reinigingssamenstelling daarvoor, toepassing van een reinigingssamenstelling in die vaatwaswerkwijze alsmede vaatwasmachine voor het uitvoeren van die werkwijze.
WO2006062927A1 (fr) * 2004-12-10 2006-06-15 Premark Feg L.L.C. Lave-vaisselle a gouttelettes de dimension regulee et/ou a nombre de weber et procede de conception associe
DE102005030720A1 (de) * 2005-07-01 2007-01-04 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine und Betriebsverfahren hierfür
WO2008053351A2 (fr) * 2006-11-03 2008-05-08 Premark Feg L.L.C. Machine à laver la vaisselle à rampes de lavage à basse pression
WO2012139772A1 (fr) * 2011-04-15 2012-10-18 Meiko Maschinenbau Gmbh & Co. Kg Machine à laver à transporteur possédant une zone de traitement spéciale
AU2019201764A1 (en) * 2018-03-19 2019-10-03 Illinois Tool Works Inc. Conveyor dishwasher

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030001A1 (de) * 2004-06-22 2006-01-12 Premark Feg L.L.C., Wilmington Spülmaschinen-Betriebsverfahren und Transportspülmaschine
DE102004030003A1 (de) 2004-06-22 2006-01-12 Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington Spülmaschinen-Betriebsverfahren und Transportspülmaschine
DE102005022634B4 (de) * 2005-05-11 2010-03-04 Meiko Maschinenbau Gmbh & Co. Kg Verfahren und Vorrichtung zur Aufbereitung von Ausscheidungsgefäßen
DE102005035764A1 (de) 2005-07-29 2007-02-01 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine und Betriebsverfahren hierfür
DE102009057326B4 (de) * 2009-12-07 2012-07-19 Edmund Ebert Verfahren zur Reinigungsmittelzugabe bei gewerblichen Geschirrspülmaschinen
US10390675B2 (en) 2015-06-01 2019-08-27 Illinois Tool Works Inc. Warewash machine cleaning notification and in-situ dilution process
DE102022124954A1 (de) 2022-09-28 2024-03-28 Illinois Tool Works Inc. Transportspülmaschine sowie verfahren zum betreiben einer transportspülmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH263607A (de) * 1945-09-04 1949-09-15 Ingeniorsfirman Adolph Von Bro Geschirrwaschmaschine.
CH421412A (de) * 1963-09-20 1966-09-30 Nikolaus Nalbach Adolf Reinigungsautomat zum Waschen und Spülen von Geschirr, Kannen, Gläsern od. dgl. Artikel
DE2253624A1 (de) * 1971-11-05 1973-05-10 Hobart Mfg Co Verfahren und vorrichtung zur behandlung der abstroemung einer geschirrspuelmaschine
US4280520A (en) * 1979-09-12 1981-07-28 Hobart Corporation Warewashing machine splashover return system
EP0036217A1 (fr) * 1980-03-18 1981-09-23 Stierlen-Maquet Aktiengesellschaft Machine à laver, en particulier la vaisselle
DE3707366A1 (de) * 1987-03-07 1988-09-15 Diversey Gmbh Verfahren zur kontinuierlichen oder diskontinuierlichen maschinellen reinigung von gebrauchsgeschirr

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235665A1 (en) * 1973-07-06 1975-01-31 Hansen William Glass tumbler washing machine for restaurants - seats over sink, with grid oscillated vertically and horizontally
SE425289C (sv) * 1978-08-31 1985-09-09 Wexioedisk Ab Sett att vid en s k banddiskmaskin spara energi och kyla fran diskmaskinen avgaende diskgods samt anordning for genomforande av settet
SE8105811L (sv) * 1981-10-01 1983-04-02 Electrolux Ab Kontinuerlig diskmaskin

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH263607A (de) * 1945-09-04 1949-09-15 Ingeniorsfirman Adolph Von Bro Geschirrwaschmaschine.
CH421412A (de) * 1963-09-20 1966-09-30 Nikolaus Nalbach Adolf Reinigungsautomat zum Waschen und Spülen von Geschirr, Kannen, Gläsern od. dgl. Artikel
DE2253624A1 (de) * 1971-11-05 1973-05-10 Hobart Mfg Co Verfahren und vorrichtung zur behandlung der abstroemung einer geschirrspuelmaschine
US4280520A (en) * 1979-09-12 1981-07-28 Hobart Corporation Warewashing machine splashover return system
EP0036217A1 (fr) * 1980-03-18 1981-09-23 Stierlen-Maquet Aktiengesellschaft Machine à laver, en particulier la vaisselle
DE3707366A1 (de) * 1987-03-07 1988-09-15 Diversey Gmbh Verfahren zur kontinuierlichen oder diskontinuierlichen maschinellen reinigung von gebrauchsgeschirr

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992011796A1 (fr) * 1991-01-05 1992-07-23 Deutsche Lufthansa Aktiengesellschaft Procede pour le lavage de vaisselle dans de grandes installations
EP0499843A1 (fr) * 1991-02-20 1992-08-26 SOPURA CHEMIE GmbH Méthode et dispositif pour le nettoyage de bouteilles
EP0712599A1 (fr) 1994-11-18 1996-05-22 Epenhuysen Chemie N.V. Procédé mécanique de nettoyage de la vaisselle
NL1006700C2 (nl) * 1997-07-31 1999-02-02 Epenhuysen Chem Nv Machinale vaatwaswerkwijze, reinigingssamenstelling daarvoor, toepassing van een reinigingssamenstelling in die vaatwaswerkwijze alsmede vaatwasmachine voor het uitvoeren van die werkwijze.
EP0894469A1 (fr) * 1997-07-31 1999-02-03 Epenhuysen Chemie N.V. Procédé pour laver mécaniquement la vaisselle
US6176244B1 (en) 1997-07-31 2001-01-23 Epenhuysen Chemie N.V. Machine dish-washing process
WO2006062927A1 (fr) * 2004-12-10 2006-06-15 Premark Feg L.L.C. Lave-vaisselle a gouttelettes de dimension regulee et/ou a nombre de weber et procede de conception associe
DE102005030720A1 (de) * 2005-07-01 2007-01-04 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine und Betriebsverfahren hierfür
WO2008053351A2 (fr) * 2006-11-03 2008-05-08 Premark Feg L.L.C. Machine à laver la vaisselle à rampes de lavage à basse pression
FR2908031A1 (fr) * 2006-11-03 2008-05-09 Elbeuviennes De Materiels Pour Machine a laver la vaisselle a rampes de lavage a basse pression
WO2008053351A3 (fr) * 2006-11-03 2008-06-26 Premark Feg Llc Machine à laver la vaisselle à rampes de lavage à basse pression
WO2012139772A1 (fr) * 2011-04-15 2012-10-18 Meiko Maschinenbau Gmbh & Co. Kg Machine à laver à transporteur possédant une zone de traitement spéciale
AU2019201764A1 (en) * 2018-03-19 2019-10-03 Illinois Tool Works Inc. Conveyor dishwasher
AU2019201764B2 (en) * 2018-03-19 2020-10-08 Illinois Tool Works Inc. Conveyor dishwasher

Also Published As

Publication number Publication date
DE3922067C2 (fr) 1991-10-02
DE3922067A1 (de) 1991-01-17

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