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EP2072000A1 - Lave-vaisselle en forme d'automate de programmation et son procédé de fonctionnement - Google Patents

Lave-vaisselle en forme d'automate de programmation et son procédé de fonctionnement Download PDF

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Publication number
EP2072000A1
EP2072000A1 EP08170121A EP08170121A EP2072000A1 EP 2072000 A1 EP2072000 A1 EP 2072000A1 EP 08170121 A EP08170121 A EP 08170121A EP 08170121 A EP08170121 A EP 08170121A EP 2072000 A1 EP2072000 A1 EP 2072000A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
wash tank
wash
liquid
waste water
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.)
Granted
Application number
EP08170121A
Other languages
German (de)
English (en)
Other versions
EP2072000B1 (fr
Inventor
Dietrich Berner
Harald Disch
Markus Heidt
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.)
Premark FEG LLC
Original Assignee
Premark FEG LLC
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 Premark FEG LLC filed Critical Premark FEG LLC
Publication of EP2072000A1 publication Critical patent/EP2072000A1/fr
Application granted granted Critical
Publication of EP2072000B1 publication Critical patent/EP2072000B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L15/4291—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
    • A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • A47L15/0078—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals with a plurality of fluid recirculation arrangements, e.g. with separated washing liquid and rinsing liquid recirculation circuits

Definitions

  • the invention relates to a method for operating a dishwasher in the form of a program machine, in particular a commercial dishwasher, according to the preamble of claim 1.
  • the invention relates to a dishwasher in the form of a program machine, in particular a commercial dishwasher, according to another independent claim.
  • Dish washers are often referred to as "utensil dishwashers" because they can be used and used not only for cleaning crockery and cutlery but also, for example, for cleaning pots, pans, trays and the like.
  • Dishwashers or utensil washers according to the invention are program-type machines (box-type warewashers). This can be Korb thoroughlyschubmaschinen (hood-type warewashers) or front loader (warewashers), especially under counter machines.
  • a method for cleaning items which contains the steps pre-cleaning by spraying the dishes with a pre-cleaner solution, main cleaning and rinsing. At least one alkali component and at least one complexing agent are added to the pre-cleaner solution.
  • the document does not say whether the method concerns a programmer (box-type warewasher) or a conveyor warewasher.
  • washing liquid contains water and dosed detergent.
  • a commercial dishwasher is normally equipped with two independent liquid systems, which are completely separated from each other.
  • One of these two fluid systems is a washing fluid circuit, which is responsible for washing the washware and is carried out with a previously used liquid from a wash tank.
  • the other fluid system is a rinse fluid system which has a water heater (boiler) for heating fresh water.
  • the main task of rinsing with rinse aid is to remove the washware on the washware.
  • the final-rinse liquid drained into the wash tank during rinsing serves to regenerate the washing liquid in the wash tank.
  • washing liquid is pumped out of the wash tank into the on-site sewage network.
  • a special type of commercial dishwashers in the form of program machines are hood-type dishwashers. Your treatment chamber for cleaning dishes is surrounded by a hood. The hood can be lifted to load the treatment chamber upwards and then lowered again for the treatment of the ware.
  • Hood machines are almost without exception provided with a feed table and a discharge table.
  • the feed table is designed in many cases as a pre-cleaning station for pre-cleaning of the items to be washed by rinsing and / or by manually removing contaminants from the items to be washed before the items to be washed is inserted into a Spülgutkorb in the hood machine.
  • Pre-cleaning by pre-rinsing is normally done manually. Pre-rinsing during pre-cleaning is usually carried out with on-site, cold or preheated fresh water. In some cases additional pre-rinse cleaning chemistry is used.
  • the outlet table is used for drying and for unloading the wash ware baskets.
  • the object of the invention is to provide a way by which the efficiency of the dishwasher can be improved.
  • the invention relates to a method for operating a dishwasher in the form of a program machine, in particular a commercial dishwasher, which has a treatment chamber and a Vorthesesstation, wherein in the treatment chamber sprayed through washing nozzles scrubbing liquid and sprayed rinse clear rinse liquid into a wash tank, from which the washing liquid by means of a washing pump to the washing nozzles is recirculated, and wherein the pre-cleaning station is arranged outside the treatment chamber and is designed for pre-cleaning of items to be washed by Vortheseswashkeit, characterized characterized in that waste water from the wash tank is used as Vortheseswashkeit.
  • the waste water of the washing tank of the dishwasher for automatic or preferably for manual pre-cleaning or pre-removal of items to be washed before the items to be washed is entered into the treatment chamber of the dishwasher.
  • the mentioned 2 liters to 3 liters of fresh water can be saved per wash cycle of items to be washed.
  • the cost of these additional operating means according to the invention may also be saved.
  • the washing liquid is a wash liquor which has a temperature of, for example, between 50 ° C. and 70 ° C. and a pH of greater than 9 or generally greater than 10.
  • the pre-cleaning liquid is sprayed in the pre-cleaning station, preferably by spray nozzles, on the items to be washed, for example by means of a manually guided spray head.
  • on-site fresh water is automatically fed to the pre-cleaning station as a pre-cleaning liquid, if the available amount of washtank wastewater is not sufficient for pre-cleaning.
  • the wash tank wastewater first from the wash tank into a reservoir is passed before it is then supplied from this reservoir by means of a pump pre-cleaning station.
  • the wash tank waste water is conveyed directly from the wash tank by means of a pump to the pre-cleaning station.
  • the wash tank waste water is filtered before it is used again in the pre-cleaning station.
  • the invention relates to a dishwasher in the form of a program machine, in particular a commercial dishwasher, comprising a treatment chamber containing washing nozzles and rinse nozzles; a wash tank into which wash liquid sprayed through the wash nozzles and clear rinse liquid sprayed through the rinse nozzles flow and from which wash liquid is recirculated to the wash nozzles by means of a wash pump; a pre-cleaning station which is arranged outside the treatment chamber and is designed for pre-cleaning of the items to be cleaned by means of pre-cleaning liquid before the items to be washed are cleaned in the treatment chamber, characterized in that a waste water transfer system is provided from the wash tank to the pre-cleaning station for automatic removal of wash tank waste water from the wash tank and for supplying the removed wash tank waste water as a pre-cleaning liquid to the pre-cleaning station.
  • dishwashers 100 and 200 are commercial dishwashers (dishwashers), which are also signposted as Utensilien Jardinmaschinen (warewashers) and are designed as a programmer. They include a program control device 2 for controlling at least one cleaning program and a treatment chamber 4 closable by a door (not shown) or a hood (not shown) for receiving items to be cleaned (not shown), such as crockery, cutlery, pots, pans and trays.
  • a program control device 2 for controlling at least one cleaning program and a treatment chamber 4 closable by a door (not shown) or a hood (not shown) for receiving items to be cleaned (not shown), such as crockery, cutlery, pots, pans and trays.
  • a washing tank 8 for receiving sprayed liquid from the treatment chamber 4.
  • a washing pump 10 is provided for conveying washing liquid from the washing tank 8 through a washing liquid conduit system 12 to washing nozzles 14 and 16.
  • the washing nozzles 14 and 16 are directed in the treatment chamber 4 to the area of the items to be cleaned to spray washing liquid on the items to be cleaned.
  • the sprayed washing liquid flows by gravity back into the wash tank 8.
  • the wash tank 8, the washing pump 10, the washing liquid conduit system 12, the washing nozzles 14 and 16 together with the treatment chamber 4 form a washing liquid circuit.
  • a rinse aid system 18 contains a rinse aid pump 20 for conveying rinse liquid through a rinse aid system 22 to rinse nozzles 24 and 26, which are directed in the treatment chamber 4 to the region of the ware to be cleaned.
  • the rinse liquid sprayed from the rinse nozzles 24 and 26 flows by gravity from the treatment chamber 4 into the wash tank 8.
  • the rinse line system 22 connects the pressure side of the rinse aid 20 to the rinse nozzles 24 and 26.
  • the wash nozzles 14 and 16 and the rinse nozzles 24 and 26 may be above and / or below and, if desired, also laterally of the wash area be arranged and each directed against the Spülgut Suite, in which in the treatment chamber 4, the items to be washed can be positioned to be cleaned.
  • a plurality of wash nozzles 14 are provided on at least one upper wash arm 15, a plurality of wash nozzles 16 on at least one lower wash arm 17, a plurality of rinse nozzles 24 on at least one upper rinse arm 25, and a plurality of rinse nozzles 26 on at least one lower rinse arm 27 ,
  • wash tank 8 If the wash tank 8 is empty before a first start of the dishwasher, it must first be filled with fresh water via a fresh water line (not shown) or by means of the rinse aid system 18 containing the rinse aid 20.
  • the rinse liquid may be fresh water or rinse aid mixed with rinse aid.
  • the washing liquid contains detergent, which is added to the liquid contained in the washing tank 8 by a detergent metering device (not shown).
  • the dishwashers 100 and 200 of the Fig. 1 and 2 are each provided with a fresh water connection 36, which is connectable to a fresh water supply network.
  • the fresh water connection 36 can be connected to the suction side of the rinse aid pump 20 via a fresh water supply valve 38 which can be controlled by the control device 2 and via a non-return preventer 40 (air gap) and, preferably, via a water heater 42.
  • the fresh water rinse aid (rinse aid) can be added, for example, in the water heater 42.
  • the water heater 42 is provided with at least one level sensor 44 for controlling the liquid level in the water heater 42 by appropriately opening and closing the fresh water valve 38 by means of the control device 2.
  • the dishwashers 100 and 200 of the Fig. 1 and 2 are provided with a pre-cleaning station 48, which is arranged outside the Bellandlungshunt 4 and is designed for pre-cleaning the items to be cleaned by Vortheseswashkeit before the dishes are placed in the treatment chamber 4 to be cleaned therein.
  • the items to be washed can be manually cleaned of contamination in the pre-cleaning station and rinsed with pre-cleaning liquid 50.
  • the pre-cleaning station 48 contains a waste water tank 56, an either mechanically positioned or preferably manually durable spray head 52 with at least one or preferably a plurality of spray nozzles 54 for spraying the pre-cleaning liquid 50 to be cleaned.
  • the spray head 52 is located above a dirty water tank 56, which receives the sprayed pre-cleaning liquid 50 and impurities removed from the dishes.
  • the dirty water tank 56 is provided with a dirty water drain 58 for draining dirty water 60 from the dirty water tank 56.
  • the dirty water tank 56 may be provided with a screen 61 for collecting dirt particles.
  • the waste water drain 58 can also be provided with a sieve.
  • a waste water transfer system from the wash tank 8 to the spray head 52 of the pre-cleaning station 48 is provided for automatic removal of wash tank waste water from the wash tank 8 and for the supply of the removed wash tank wastewater as Vortheseswashkeit 50 to the pre-cleaning station 48th Die Fig. 1 and 2 show two preferred embodiments of waste water transfer systems according to the invention, without the invention being limited thereto.
  • the dishwasher 100 of Fig. 1 is provided with a waste water transfer system 102 having a transfer line 62 which connects the wash tank 8 from a location below a wash tank level sensor 64, preferably from the sump 32, to the spray head 52 and a transfer pump 66
  • the transfer line 62 has a transfer line section 70 connecting the pressure side 68 of the transfer pump 66 to the spray head 52, the downstream end of which is fluidly connectable or separable to the spray head 52 via a valve V1.
  • the valve V1 may be located at the end of the transfer line section 70 or upstream thereof, or preferably at the spray head 52.
  • the suction side 72 of the transfer pump 66 can be connected via a transfer line section 74 and a further valve V2 arranged therein to the wash tank 8, preferably to the sump 32 thereof.
  • the further valve V2 divides the transfer line section 74 into a line part 76 and a line part 78.
  • a fresh water supply line 80 can be connected to the suction side 72 of the transfer pump 66 via a fresh water supply valve V3.
  • the fresh water supply line 80 is connected via a second remindsaugverinder 81 and a second fresh water valve 82 a fresh water branch line 83 with the fresh water connection 36.
  • the wash tank 8 when operating the valve V1 by an operator part of the cyclically occurring in the wash tank 8 wastewater (wash water) as a pre-cleaning liquid by means of the transfer pump 66 the wash tank 8 and fed to the spray head 52.
  • the wash tank 8 may not be removed the entire washing liquid, since at least part of it is needed for the next washing process.
  • the minimum amount of washing liquid remaining in the washing tank 8 is monitored, for example, by the wash tank level sensor 64, which generates a signal when the liquid level in the wash tank 8 has dropped to or falls below the level of the level sensor 8.
  • the remaining amount of liquid in the wash tank 8 can be pumped out via the drain pump 30.
  • the transfer pump 66 is turned on and the valve V2 is opened and promoted washing liquid as a pre-cleaning liquid from the wash tank 8 to the spray head 52.
  • valve V2 in the transfer line section 74 automatically becomes dependent on the signal of the wash tank level sensor 64 by the control device 2 the suction side of the transfer pump 66 is closed and then, or at the same time at the same time, the valve V3 of the fresh water supply line 80 is opened, at the same time the fresh water valve 82 of the fresh water branch line 83 is opened at the same time.
  • the valve V3 then supplies via the transfer pump 66 the pre-cleaning station 48, in particular the spray head 52, with fresh water from the fresh water supply line 80.
  • the fresh water valve 82 and the valve V3 can be closed again and then or at the same time at the same time the valve V2 can be opened again if the liquid level in the wash tank 8 has again risen above the wash tank level sensor 64.
  • the wastewater transfer system 102 of Fig. 1 may include a filter 79 for filtering the washing water used as a pre-cleaning liquid.
  • a waste water transfer system 202 which in turn includes the transfer pump 66, the transfer line section 70 and the valve V1, which is arranged in the transfer line section 70 or at its end or preferably at the spray head 52 and is manually operable to the pressure side 68 the transfer pump 66 to communicate with the spray head 52 in terms of flow.
  • the suction side 72 of the transfer pump 66 is not directly connected to the wash tank 8, but with a reservoir 212, preferably with the lower end of the reservoir 212.
  • the drain pump 30, which is connected with its suction side to the sump 32 of the wash tank 8 is not connected to a domestic sewage system with its pressure side, but via a connecting line 214, preferably via a removable strainer 216 fluidly connected to the reservoir 212 for transferring wash fluid from the wash tank 8 to the reservoir 212 in the manner previously described Fig. 1 as a function of the liquid level in the wash tank 8, which is monitored by the wash tank level sensor 64.
  • a second drain pump 220 is connected to empty the reservoir 212 in a domestic sewage system, in particular in the sewer.
  • Fig. 2 is the fresh water supply line 80, which with respect to Fig. 1 has been described, via its fresh water supply valve V3 fluidly connected to the reservoir 212.
  • the fresh water supply valve V3 is controlled by the controller 2 depending on whether the liquid level in the reservoir 212 has dropped to or higher than the level of a reservoir level sensor 222 or below.
  • the reservoir 212 may be provided with a safety overflow 224.
  • the entire waste water of the wash tank 8 is removed by means of the drain pump 30 the wash tank 8 and pumped into the reservoir 212.
  • the wastewater is filtered through the preferably removable filter 216 (strainer) before flowing into the reservoir 212.
  • the transfer pump 66 is turned on and the stored wastewater conveyed as a pre-cleaning liquid from the reservoir 212 to the spray head 52.
  • the reservoir 212 is provided with the reservoir level sensor 222 which causes the fresh water supply valve V3 of the fresh water supply line 80 to be opened and fresh water introduced into the reservoir 212 only when the liquid level in the reservoir 212 is that defined by the reservoir level sensor , lower liquid level limit below.
  • the maximum upper liquid level in the reservoir 212 is through its overflow 224 defined.
  • a filter may also be provided elsewhere for filtering the washing liquid removed from the wash tank 8 on the way to the storage container 212.
  • a filter may also be disposed on the way from the storage container 212 to the pre-cleaning liquid Spray head 52 may be provided.

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  • Washing And Drying Of Tableware (AREA)
EP08170121A 2007-12-21 2008-11-27 Lave-vaisselle en forme d'automate de programmation et son procédé de fonctionnement Not-in-force EP2072000B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007062953A DE102007062953A1 (de) 2007-12-21 2007-12-21 Geschirrspülmaschine in Form eines Programmautomaten und Verfahren zu deren Betrieb

Publications (2)

Publication Number Publication Date
EP2072000A1 true EP2072000A1 (fr) 2009-06-24
EP2072000B1 EP2072000B1 (fr) 2012-01-04

Family

ID=40512439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08170121A Not-in-force EP2072000B1 (fr) 2007-12-21 2008-11-27 Lave-vaisselle en forme d'automate de programmation et son procédé de fonctionnement

Country Status (3)

Country Link
US (1) US7892359B2 (fr)
EP (1) EP2072000B1 (fr)
DE (1) DE102007062953A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014101710U1 (de) 2013-10-23 2014-04-17 Winterhalter Gastronom Gmbh Programmautomat zum Spülen von Spülgut
EP2976469A4 (fr) * 2013-03-21 2016-12-28 Seven Hour Drive Llc Dispositif de source d'eau grise auxiliaire pour des cuisines industrielles
US10105033B2 (en) 2013-03-21 2018-10-23 Seven Hour Drive, LLC Auxiliary gray water source device for commercial kitchens

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009055805A1 (de) 2009-11-26 2011-06-01 Winterhalter Gastronom Gmbh Vorrichtung zur Geschirrreinigung mit Vorreinigungsstation und Verfahren zum Geschirrreinigen mit Vorreinigung
US8337631B2 (en) * 2010-03-08 2012-12-25 Whirlpool Corporation Dishwasher with separate sump for concentrated fluid supply
US9603501B2 (en) 2011-09-02 2017-03-28 Ecolab Usa Inc. Use of recycled wash and rinse water for the pre-rinse operation of dishes
EP2732748B1 (fr) 2012-11-20 2017-01-04 Premark FEG L.L.C. Système de détection de panne de moteur de pompe de lave-vaisselle et procédé associé
US9596973B2 (en) 2013-03-21 2017-03-21 Seven Hour Drive, LLC Auxiliary gray water source device for commercial kitchens
US9962059B2 (en) 2014-05-08 2018-05-08 Illinois Tool Works Inc. Warewasher wash arm filter arrangement
CN105581656B (zh) * 2015-12-19 2018-07-24 覃鸿飞 一种直饮水机出水口的清洁装置
CN105411400B (zh) * 2015-12-19 2018-07-06 覃鸿飞 一种直饮水机的清洁装置
DE102017107656A1 (de) 2017-04-10 2018-10-11 Bernd Reutemann GmbH Vorreinigungsvorrichtung für Spülgut angeordnet in einem Spülkorb
JP7698558B2 (ja) * 2021-11-04 2025-06-25 ホシザキ株式会社 洗浄機

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US4689089A (en) 1984-09-21 1987-08-25 Hobart Corporation Heat control for a dishwashing machine
US4805649A (en) * 1987-10-30 1989-02-21 Perlick Corporation Beverage glass washer
WO1995014424A2 (fr) * 1993-11-20 1995-06-01 Unilever N.V. Procede de lavage dans un lave-vaisselle
EP0838190A2 (fr) * 1996-10-25 1998-04-29 Premark FEG L.L.C. Machine à laver la vaisselle type tunnel et procédé pour nettoyer la vaisselle et/ou les plateaux
DE102005030720A1 (de) * 2005-07-01 2007-01-04 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine und Betriebsverfahren hierfür

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JPH11138440A (ja) * 1997-11-11 1999-05-25 Washio Chuuri Kogyo Kk ブラスト式洗浄装置
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DE102005035764A1 (de) * 2005-07-29 2007-02-01 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine und Betriebsverfahren hierfür
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689089A (en) 1984-09-21 1987-08-25 Hobart Corporation Heat control for a dishwashing machine
US4805649A (en) * 1987-10-30 1989-02-21 Perlick Corporation Beverage glass washer
WO1995014424A2 (fr) * 1993-11-20 1995-06-01 Unilever N.V. Procede de lavage dans un lave-vaisselle
EP0838190A2 (fr) * 1996-10-25 1998-04-29 Premark FEG L.L.C. Machine à laver la vaisselle type tunnel et procédé pour nettoyer la vaisselle et/ou les plateaux
DE102005030720A1 (de) * 2005-07-01 2007-01-04 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine und Betriebsverfahren hierfür

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2976469A4 (fr) * 2013-03-21 2016-12-28 Seven Hour Drive Llc Dispositif de source d'eau grise auxiliaire pour des cuisines industrielles
US10105033B2 (en) 2013-03-21 2018-10-23 Seven Hour Drive, LLC Auxiliary gray water source device for commercial kitchens
US10702124B2 (en) 2013-03-21 2020-07-07 Seven Hour Drive, LLC Auxiliary gray water source device for commercial kitchens
US11330960B2 (en) 2013-03-21 2022-05-17 Seven Hour Drive, LLC Auxiliary gray water source device for commercial kitchens
US12383113B2 (en) 2013-03-21 2025-08-12 Seven Hour Drive, LLC Auxiliary gray water source device for commercial kitchens
DE202014101710U1 (de) 2013-10-23 2014-04-17 Winterhalter Gastronom Gmbh Programmautomat zum Spülen von Spülgut
DE102013111670B3 (de) * 2013-10-23 2014-12-04 Winterhalter Gastronom Gmbh Verfahren zum Spülen von Spülgut sowie Programmautomat
EP2908712B1 (fr) 2013-10-23 2016-07-06 Winterhalter Gastronom Gmbh Procédé permettant de laver un article à laver et un automate de programmation
DE102013111670C5 (de) * 2013-10-23 2021-02-11 Winterhalter Gastronom Gmbh Verfahren zum Spülen von Spülgut sowie Programmautomat

Also Published As

Publication number Publication date
US20090159097A1 (en) 2009-06-25
DE102007062953A1 (de) 2009-06-25
EP2072000B1 (fr) 2012-01-04
US7892359B2 (en) 2011-02-22

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