EP1921974B1 - Bandtransport-geschirrspülmaschine - Google Patents

Bandtransport-geschirrspülmaschine Download PDF

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Publication number
EP1921974B1
EP1921974B1 EP06789644A EP06789644A EP1921974B1 EP 1921974 B1 EP1921974 B1 EP 1921974B1 EP 06789644 A EP06789644 A EP 06789644A EP 06789644 A EP06789644 A EP 06789644A EP 1921974 B1 EP1921974 B1 EP 1921974B1
Authority
EP
European Patent Office
Prior art keywords
wash
final rinse
liquid
post
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.)
Expired - Fee Related
Application number
EP06789644A
Other languages
English (en)
French (fr)
Other versions
EP1921974A2 (de
Inventor
Dietrich Berner
Klaus Padtberg
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 EP1921974A2 publication Critical patent/EP1921974A2/de
Application granted granted Critical
Publication of EP1921974B1 publication Critical patent/EP1921974B1/de
Expired - Fee Related 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
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/241—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors the dishes moving in a horizontal plane

Definitions

  • the invention concerns a conveyor ware washer, particularly a commercial conveyor ware washer of the type commonly configured in the form of a flight-type ware washer or in the form of a rack conveyor ware washer.
  • Conveyor ware washers are known for e.g. from the US 3,789,860 , US 4,231,806 , DE 196 44 438 C2 and DE 198 29 650 C2 , and EP 0560025 A1 .
  • Sprayed final rinse liquid or post-wash liquid is treated in such a manner that it has the quality of potable water from a microbiological perspective. Water supply that the resulting water mixture has the quality of potable water in microbiological terms.
  • the treatment of the sprayed final rinse liquid or the post-wash liquid may be done with the help of a micro-filtration system or an ultra-filtration system. Hygiene may guaranteed by the addition of ozone as a disinfecting agent, in case this is necessary in addition to the filtration.
  • a treatment device as per the invention can either be integrated in the conveyor ware washer or connected to the conveyor ware washer or be located separately.
  • the conveyor ware washers as per the invention given in the drawings can either be rack conveyor ware washers or flight-type ware washers.
  • the conveyor ware washers contain at least one wash zone, from which for example two wash zones 3 and 5 are represented, and at least one final rinse zone 25 which, in wash ware transport direction 42, is arranged after the wash zones.
  • the wash zones 3 and 5 each contain a wash system with for example upper wash nozzles 6 and 8 and lower wash nozzles 10 and 12.
  • a wash tank 14 and 16 is provided for each wash zone 3 and 5 for the collection of wash liquid sprayed in wash zone 3 and 5.
  • the wash liquid sprayed by the wash nozzles 6, 10 and 8, 12 resp. of each wash zone 3 and 5 resp. is recirculated by means of a pump 18 and 20 resp. from the respective wash tank 14 and 16 resp. through a wash liquid-supply pipe 19 and 21 resp. again to the wash nozzles 6, 10 and 8, 12.
  • the final rinse zone 25 contains, for example, the upper final rinse nozzles 24 and lower final rinse nozzles 26.
  • Fresh final rinse liquid can be supplied through a final rinse liquid supply device 28 to the final rinse nozzles 24 and 26.
  • the final rinse liquid supply device 28 can contain a water heater 30, preferably a boiler, a pump 32 and a final rinse liquid supply pipe 27 connecting the pump 32 with the final rinse nozzles 24, 26, and can be connected to a fresh water supply pipe 34.
  • a transport device 40 conveys the wash ware to be cleaned in transport direction 42, which is shown by an arrow, through the wash zones 3 and 5 and then through the final rinse zone 25.
  • a dry zone 44 can be provided in the transport direction 42 after the final rinse zone 25, through which the wash ware is transported from the transport device 40.
  • the dry zone 44 is schematically described in Fig. 1 and 2 .
  • the Fig. 1 , 2 and 3 show an embodiment, for which a post-wash zone 46 is located between the last wash zone 5 and the final rinse zone 25.
  • a post-wash zone 46 is located between the last wash zone 5 and the final rinse zone 25.
  • upper post-wash nozzles 50 and lower post-wash nozzles 52 are found in the post-wash zone 46, to which sprayed final rinse liquid is supplied as post-wash liquid from a post-wash tank 54 through a post-wash liquid-supply pipe 56 with the help of a pump 58.
  • the sprayed final rinse liquid in the final rinse zone 25 from the final rinse nozzles 24 and 26, and at least a part of the sprayed post-wash liquid in the post-wash zone 46 from the post wash nozzles 50 and 52 collect in the post-wash tank 54.
  • Another part of the post-wash liquid sprayed from the post wash nozzles 50 and 52 is preferably collected through a conduction element 60 and led into the wash tank 16 of the last wash zone 5.
  • the post-wash liquid sprayed by the post-wash nozzles 50, 52 in the post-wash zone 46 is therefore re-used final rinse liquid sprayed once in the final rinse zone 25 by the final rinse nozzles 24 and 26. Therefore, the post-wash zone 46 can also be designated as pre-rinse zone 46, the post-wash nozzles 50, 52 can also be designated as pre-rinse nozzles 50, 52 and post-wash liquid can also be designated as pre-rinse liquid.
  • the final rinse liquid is water which possesses the quality of potable water from the microbiological perspective, with or without an addition of rinse aid.
  • the post-wash tank 54 and the wash-tanks 16 and 14 are connected to a liquid-overflow-cascade system, in which the liquid can flow opposite to the transport direction 42 of the transport device 40 from the post-wash tank 54 into the last wash tank 16 and from here to the preceding wash tank 14 etc.
  • the wash liquid is water, to which the detergent is added.
  • Fig. 4 is identical to the embodiments as per Fig. 1 , 2 and 3 with the exception that no post-wash zone 46 is provided. Accordingly, Fig.4 also has no post-wash tank 54, but a floor 62 or floor trough 64 is provided for collection of the final rinse liquid which is sprayed from the final rinse spray nozzles 24 and 26 in the final rinse zone 25, from which the sprayed final rinse liquid can flow into the neighbouring last wash tank 16.
  • the first wash tank 14 in the transport direction 42 which is the last wash-tank 14 in the flow direction of the liquid cascade, can be provided with a drain 66 for discharge of soiled wash liquid for all embodiments in Fig. 1 , 2 , 3 and 4 .
  • all conveyor ware washers as per Fig. 1 , 2 , 3 and 4 are provided with a treatment device 70 for treating of sprayed final rinse liquid or for treating a mixture of sprayed final rinse liquid and sprayed post-wash liquid, so that the treated liquid again has the quality of potable water in microbiological terms.
  • the treatment device 70 is connected to the final rinse zone 25 as per Fig. 4 and to the final rinse zone 25 and the post-wash zone 46 as per Fig. 1 , 2 and 3 , so that it gathers in it the sprayed final rinse liquid or a mixture of the sprayed final rinse liquid and post-wash liquid and then returns the treated liquid in the final rinse zone 25 for renewed spraying.
  • the treatment device 70 contains preferably a micro-filtration device 72 or ultra filtration device 72 for filtration of the sprayed final rinse liquid.
  • the micro-filtration device 72 or ultra filtration device 72 contains a transverse flow filter 74 for micro-filtration or ultra-filtration of the sprayed final rinse liquid.
  • the transverse flow filter 74 contains at least a primary chamber 76 and a secondary chamber 78, which are separated from each other by at least one micro-filtration element 80 or one ultra-filtration element 80.
  • the invention can be realized in different embodiments.
  • the treated pre-used final rinse liquid depending on the embodiment can either be only sprayed final rinse liquid of the final rinse zone 25 or a mixture of the sprayed final rinse liquid of the final rinse zone 25 and sprayed post-wash liquid from the post wash zone 46 or only post-wash liquid from the post-wash zone 46 (which is pre-used final rinse liquid used again).
  • the pre-used final rinse liquid to be cleaned flows through the primary chamber 76 with the pressure of a pump from an inlet 82 to an outlet 84, during which a part is filtered through the filtration element 80 and thus reaches in the secondary chamber 78 as cleaned final rinse liquid.
  • This cleaned final rinse liquid can be led back through a discharge pipe 86 into the final rinse liquid-supply device 28, for example into the water heater 30, if from the microbiological perspective it is of potable quality.
  • ozone can be added as a disinfecting component to the final rinse liquid which was cleaned by the filtration for the purpose of disinfecting.
  • an ozone-adding device 90 can be provided. This can be connected on the one hand with a connecting pipe 92 to the secondary chamber 78 and on the other hand to the discharge pipe 86.
  • the treatment device 70 contains a gathering pipe 94, through which it gathers the pre-used final rinse liquid to be cleaned, and supplies it to the inlet 82 of the primary chamber 76 of the transverse flow filter 74.
  • the gathering pipe 94 is connected to the post-wash tank 54 in Fig. 1 , 2 and 3 , in order to gather not only the sprayed final rinse liquid in the final rinse zone 25, but also at least a part of the sprayed post-wash liquid in the post-wash zone 46.
  • the gathering pipe 94 is connected to the floor trough 64, in order to gather the sprayed final rinse liquid of the final rinse zone 25.
  • the un-cleaned final rinse liquid part flowing through the outlet 84 from the primary chamber 76 can be re-used in the dish washing machine.
  • This un-cleaned final rinse liquid can be re-circulated in a circuit as per a preferred embodiment form. There are several embodiments which are possible.
  • FIG. 1 and 4 An embodiment option is shown in Fig. 1 and 4 .
  • the intake pipe 94 is connected to the inlet 82 of the primary chamber 76 through a final rinse liquid collection element 100, preferably a collection tank, and a primary chamber inlet pipe 102, which comprises a supply pump 104 feeding into the primary chamber 76.
  • the outlet 84 of the primary chamber 76 is again connected with the final liquid collection element 100 through a primary chamber outlet pipe 106.
  • the pre-used final rinse liquid flows through the intake pipe 94 in Fig. 4 only from the final rinse zone 25 and additionally in case of the embodiment as per Fig.
  • the pump 104 supplies in direction from the final rinse liquid collection element 100 to the inlet 82 of the primary chamber 76.
  • the primary chamber 76, the final rinse liquid collection element 100 and the pump 104 form a primary chamber re-circulation circuit 108, as is indicated by the arrow 108.
  • the final rinse liquid collection element 100 can however also be designed as a collection element for the collection of soil particles, which can be taken from the collection element 100 continuously or intermittently.
  • the post-wash tank 54 is connected through the gathering pipe 94 and a pump 104 in the primary chamber inlet pipe 102 to the inlet 82 of the primary chamber 76, without the use of a final rinse liquid collection element 100.
  • the outlet 84 of the primary chamber 76 is connected through the primary chamber outlet pipe 106 with the post-wash tank 54 in flow connection, in order to lead back the post-wash liquid from the primary chamber 76 into the post-wash tank 54.
  • a primary chamber re-circulation circuit 208 is formed, which contains the pump 104 and in its feeding direction one after the other the primary chamber 76 of the transverse flow filter 74 and the post-wash tank 54.
  • the suction side of the pump 58 is connected through the intake pipe 94 with the post-wash tank 54.
  • the pressure side of the pump 58 is connected through the primary chamber inlet pipe 102 with the inlet 82 of the primary chamber 76.
  • the outlet 84 of the primary chamber 76 is connected through the primary chamber outlet pipe 106 with the final wash liquid supply pipe 56 of the post-wash nozzles 50 and 52 of the post-wash zone 46.
  • a primary chamber re-circulation circuit 308 is formed, which contains in the supply direction of the pump 58, consecutively the pump 58, the primary chamber 76, and the post-wash nozzles 50 and 52 and then the post-wash tank 54.
  • the pump 58 does not only serve the supply of the pre-used final rinse liquid to be cleaned through the primary chamber 76, but also simultaneously the supply of this final rinse liquid as post-wash liquid to the post-wash nozzles 50 and 52.
  • This embodiment requires one pump less than the embodiments as per Fig. 1 and 2 .
  • Fig. 5, 6 and 7 show different types 190, 290 and 390 of the ozone-adding device 90 as examples as per the invention in order to supply ozone into the filtered final rinse liquid.
  • Arrows 120 and 122 show the filtered final rinse liquid and its flow direction before and after the addition of ozone "03".
  • a storage tank 126 is provided in which ozone "03" or an ozone air mixture can penetrate through a gas-permeable membrane 130 into the filtered final rinse liquid.
  • the filtered final rinse liquid flows through a tank 226.
  • a venturi-circuit 228 is connected to the tank 226, in which by a pump 230 filtered final rinse liquid is taken from the tank 226, driven through a venturi element 232 and then again supplied into the tank 226.
  • the filtered liquid flow sucks in ozone "03" or an ozone-air mixture within the venturi element 232 and then flows back into the tank 226, where the ozone can mix with the remaining part of the filtered final rinse liquid.
  • a venturi element 332 is located in the flow path of the filtered final rinse liquid from the secondary chamber 78 of the transverse flow filter 74 to the final rinse-supply device 28 for sucking in ozone "03" or an ozone-air mixture from a source of ozone which is schematically shown in the drawings as "03".

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Claims (2)

  1. Transportspülmaschine mit mindestens einer Reinigungsspülzone (3, 5) zum Sprühen von Reinigungsspülflüssigkeit, mindestens einer Klarspülzone (25) zum Sprühen von Klarspülflüssigkeit auf Geschirr, einer Nachreinigungsspülzone (46) zwischen der Reinigungsspülzone und der mindestens einen Klarspülzone (25) zum Sprühen einer Nachreinigungsspülflüssigkeit auf das Geschirr und einem Geschirrförderer zum Bewegen von Geschirr durch die Reinigungsspülzone, die Nachreinigungsspülzone und die Klarspülzone,
    gekennzeichnet durch eine Behandlungsvorrichtung (70) für die Behandlung von versprühter Klarspülflüssigkeit und versprühter Nachreinigungsspülflüssigkeit, so dass die behandelte Flüssigkeit in mikrobiologischer Hinsicht Trinkwasserqualität hat, wobei die Behandlungsvorrichtung (70) ein Sammelrohr (94) zum automatischen SammeIn von versprühter Nachreinigungsspülflüssigkeit und/oder versprühter Klarspülflüssigkeit enthält, wobei die Behandlungsvorrichtung (70) für das Abführen der behandelten Flüssigkeit zur Klarspülzone (25) gedacht ist, damit sie erneut als Klarspülflüssigkeit oder mindestens als ein Teil der Klarspülflüssigkeit versprüht werden kann, und wobei das Sammelrohr (94) entweder mit einem Nachreinigungsspültank (54) verbunden ist, in dem mindestens ein Teil der versprühten Nachreinigungsspülflüssigkeit und der versprühten Klarspülflüssigkeit gesammelt wird, oder wobei das Sammelrohr (94) mit einem Bodentrog (64) verbunden ist, der zum Sammeln der versprühten Klarspülflüssigkeit vorgesehen ist.
  2. Transportspülmaschine nach Anspruch 1, wobei ein Nachreinigungsspültank (54) zum SammeIn von in der Klarspülzone (25) versprühter Klarspülflüssigkeit und zum SammeIn mindestens eines Teils von in der Nachreinigungsspülzone (46) versprühter Nachreinigungsspülflüssigkeit vorgesehen ist und wobei die Behandlungsvorrichtung (70) mit dem Nachreinigungsspültank (54) verbunden ist, damit daraus eine Mischung aus der versprühten Klarspülflüssigkeit und der versprühten Nachreinigungsspülflüssigkeit genommen werden kann, damit sie behandelt werden kann, so dass daraus behandelte Klarspülflüssigkeit wird, die in mikrobiologischer Hinsicht Trinkwasserqualität hat.
EP06789644A 2005-08-18 2006-08-10 Bandtransport-geschirrspülmaschine Expired - Fee Related EP1921974B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005039140A DE102005039140A1 (de) 2005-08-18 2005-08-18 Transport-Geschirrspülmaschine
PCT/US2006/031114 WO2007021786A2 (en) 2005-08-18 2006-08-10 Conveyor ware washer

Publications (2)

Publication Number Publication Date
EP1921974A2 EP1921974A2 (de) 2008-05-21
EP1921974B1 true EP1921974B1 (de) 2010-10-06

Family

ID=37685325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06789644A Expired - Fee Related EP1921974B1 (de) 2005-08-18 2006-08-10 Bandtransport-geschirrspülmaschine

Country Status (6)

Country Link
US (1) US20080216875A1 (de)
EP (1) EP1921974B1 (de)
CA (1) CA2619652A1 (de)
DE (2) DE102005039140A1 (de)
MX (1) MX2008002340A (de)
WO (1) WO2007021786A2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2884690B1 (fr) 2005-04-22 2007-06-29 Premark Feg Llc Four professionnel grande cuisine a eclairage perfectionne
DE102005038433A1 (de) * 2005-08-12 2007-02-15 Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington Transport-Geschirrspülmaschine
DE102007024799A1 (de) 2007-05-26 2008-11-27 Premark Feg L.L.C., Wilmington Gewerbliche Geschirrspülmaschine
DE102008048491A1 (de) * 2008-09-23 2010-04-01 Meiko Maschinenbau Gmbh & Co.Kg Geschirrspülmaschine mit Niedertemperatur-Nachspülung
DE102009024569A1 (de) * 2009-06-08 2011-04-07 Premark Feg L.L.C., Wilmington Transportspülmaschine zum Spülen von Spülgut sowie Verfahren zum Betrieb einer derartigen Transportspülmaschine
DE102010011471A1 (de) * 2010-03-15 2011-09-15 Meiko Maschinenbau Gmbh & Co. Kg Durchlaufspülmaschine mit verbesserter Klarspülung
WO2013086217A1 (en) 2011-12-06 2013-06-13 Masco Corporation Of Indiana Ozone distribution in a faucet
CN115093008B (zh) 2015-12-21 2024-05-14 德尔塔阀门公司 包括消毒装置的流体输送***
EP3530676A4 (de) * 2016-10-21 2020-06-17 Kuraray Noritake Dental Inc. Zusammensetzung für optische dreidimensionale modellierung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789860A (en) * 1971-11-05 1974-02-05 Hobart Mfg Co Method and apparatus for treating dishwasher discharge
DE4100164C1 (de) * 1991-01-05 1992-04-30 Deutsche Lufthansa Ag, 5000 Koeln, De
DE4218958A1 (de) * 1991-06-13 1992-12-17 Miele & Cie Verfahren zur wiederverwendung von spuel- oder reinigungsfluessigkeit bei programmgesteuerten geschirrspuelmaschinen oder waschmaschinen
DE4208030A1 (de) * 1992-03-13 1993-09-16 Passavant Werke Verfahren zum reinigen von geschirr in mehrstufigen spuelmaschinen
KR200149370Y1 (ko) * 1995-03-31 1999-06-15 전주범 세탁기의 이물질 걸름장치
DE19644438C2 (de) * 1996-10-25 1998-11-12 Premark Feg L L C N D Ges D St Durchlaufgeschirrspülvorrichtung sowie Verfahren zum Reinigen von Geschirr- und/oder Tabletteilen
DE29716444U1 (de) * 1997-09-12 1998-01-15 WPT, Vertriebsgesellschaft für Wasser- und Prozeß-Technik mbH, 79276 Reute Flaschenwaschmaschine mit Wassersparsystem
US20020153021A1 (en) * 2001-03-30 2002-10-24 Cfr Assainissement Inc. Washing and sterilizing line and uses thereof
CA2400546A1 (en) * 2002-09-05 2004-03-05 Gabriel Plante Assembly filtering and recycling waste water of a dishwasher one or more times for saving energy and water consumption

Also Published As

Publication number Publication date
EP1921974A2 (de) 2008-05-21
US20080216875A1 (en) 2008-09-11
MX2008002340A (es) 2008-03-18
CA2619652A1 (en) 2007-02-22
DE102005039140A1 (de) 2007-02-22
WO2007021786A3 (en) 2007-09-27
WO2007021786A2 (en) 2007-02-22
DE602006017400D1 (de) 2010-11-18

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