EP1815779B1 - Machine à laver la vaisselle à bande - Google Patents

Machine à laver la vaisselle à bande Download PDF

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Publication number
EP1815779B1
EP1815779B1 EP20060122637 EP06122637A EP1815779B1 EP 1815779 B1 EP1815779 B1 EP 1815779B1 EP 20060122637 EP20060122637 EP 20060122637 EP 06122637 A EP06122637 A EP 06122637A EP 1815779 B1 EP1815779 B1 EP 1815779B1
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EP
European Patent Office
Prior art keywords
rinse
liquid
zone
nozzles
tank
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
EP20060122637
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German (de)
English (en)
Other versions
EP1815779A3 (fr
EP1815779A2 (fr
Inventor
Axel Beck
Dietrich Berner
Udo Erb
Dennis Firchau
Jürgen Litterst
Klaus Dr. Padtberg
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Premark FEG LLC
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Premark FEG LLC
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Publication date
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Publication of EP1815779A2 publication Critical patent/EP1815779A2/fr
Publication of EP1815779A3 publication Critical patent/EP1815779A3/fr
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Publication of EP1815779B1 publication Critical patent/EP1815779B1/fr
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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 relates to a transport dishwasher according to the preamble of claim 1.
  • a transport dishwasher (warewasher) of this kind is from the DE 196 44 438 A1 known.
  • the known transport dishwasher contains in Spülguttransportides a conveyor (conveyor) successively a Vorabhoffmzone (Pre-cleaning zone) with Vorabhoffmdüsen (pre-cleaning nozzles) for removing coarse dirt (soil) on wash ware, at least one wash zone (wash zone) with wash nozzles for spraying wash liquid onto the washware, a first pre-rinse zone with first pre-rinse nozzles, a second pre-rinse zone with second pre-rinse nozzles, and a final rinse zone (final rinse zone) with rinse nozzles (final rinse nozzles).
  • the rinse-aid nozzles spray rinse liquid (final rinse liquid), in particular fresh water, onto the items to be washed.
  • the sprayed rinse liquid enters a pre-rinse tank, from which it is pumped to the second rinse nozzles (pre-rinse nozzles) and to the first pre-rinse nozzles (pre-rinse nozzles) is promoted.
  • the pre-rinse liquid sprayed from the second pre-rinse nozzles flows back into the pre-rinse tank.
  • the pre-rinse liquid sprayed from the first rinse nozzles is directed through a baffle into the wash tank of the last wash zone.
  • a liquid cascade system allows fluid to flow from the pre-rinse tank into the last wash tank and away from it, up to a tank opposite to that of the pre-cleaning nozzles in the pre-cleaning zone. sprayed liquid.
  • Conveyor warewashers may be rack conveyor warewashers or flight-type warewashers.
  • the fresh water consumption of transport dishwashers is particularly dependent on how much fresh water is needed for the first filling of the transport dishwasher and how large the consumption of fresh water for the final rinse during operation of the transport dishwasher.
  • the final rinse liquid used for the final rinse must have the quality of drinking water from a microbiological point of view. Therefore, the water for rinsing in a transport dishwasher is usually taken completely or at least partially from the public fresh water supply network.
  • the lowest possible consumption of detergent (rinse aid) and rinse aid (rinse aid) is of importance.
  • the fresh water is added to the washing zones of the transport dishwasher dishwasher cleaner.
  • the purifier makes the water alkaline.
  • the alkalinity and food residues must be completely removed from the washware in the pre-rinse zones and at the latest in the rinse zone (final rinse zone) so that no visible residues remain on the dishes. In particular, when cleaning glasses, the residues are disturbingly visible.
  • a complete cleaning of washware at the latest in the A final rinse zone is a particular problem with rack conveyor warewashers because the items to be washed in the baskets are partially shielded from the baskets by the spray jets of the nozzles.
  • a further problem is that washing liquid containing detergent is carried off the ware from zone to zone in the conveyor dishwashing machine.
  • the invention enables the problem to be solved to achieve effective cleaning of the items to be washed by a new transport dishwasher.
  • a transport dishwasher comprising in the order given in each case at least one washing zone with washing nozzles, a first Vor Hugheszone with first Vor faceddüsen, a second Vor Whyzone with second Vor faceddüsen, and a rinse zone with rinse nozzles; a transport device for transporting items to be washed through said zones in the product transport direction from the at least one wash zone to the at least one final rinse zone; a washing tank into which washing liquid, which is sprayed by the washing nozzles of the last wash zone in the washware transport direction, and into the first pre-wash liquid, which is sprayed by the first pre-wash nozzles of the first pre-wash zone; a first pre-rinsing tank, into which second pre-rinse liquid flows, which is sprayed by the second pre-rinse nozzles in the second pre-rinse zone; Liquid supply means for supplying pre-rinse liquid from the first pre-rinse tank as second pre-
  • the invention achieves effective cleaning with low fresh water requirement.
  • first pre-rinsing zone from which sprayed first pre-rinsing liquid does not flow into a pre-rinsing zone, but into the last washing zone, has the advantage that the alkalinity, food residues and possibly also existing salinity, which adhere to the laundry after the last washing zone, in the wash tank the last washing zone are promoted back and thus do not get into the second prewash zone in large quantities.
  • Transport warewashers 10 and 12 may be flight-type warewashers or rack conveyor warewashers. They contain in the order given below in each case at least one washing zone 14 with washing nozzles 16; a first pre-rinsing zone 1 with first pre-rinse nozzles 1.1; a second pre-rinse zone 2 with second pre-rinse nozzles 2.1; a third pre-rinsing zone 3 with third pre-rinse nozzles 3.1; and a final rinse zone 4 with rinse nozzles 4.1.
  • a transport device 18 transports ware 20, for example jars without handle, jars with handle and plate, in the ware transport direction 24 from the at least one washing zone 14 to the at least one final rinse zone 4 through all the zones mentioned.
  • washing zone 14 the last washing zone.
  • Each washing zone, at least the last washing zone 14 is associated with a washing tank 26, into which the washing liquid sprayed onto the items 20 to be washed by the washing nozzles 16 of this last washing zone 14 can flow off.
  • the first pre-rinsing zone 1 is designed in such a way that the first pre-rinsing liquid sprayed from the first pre-rinsing nozzles 1.1 of this first pre-rinsing zone 1 onto the items to be washed 20 Washing tank 26 of the last washing zone 14 drains off.
  • a drain element 1.2 for example a drain bottom or a guide plate, which directs the pre-rinsing liquid sprayed by the first pre-rinse nozzles 1.1 into the wash tank 26.
  • the drain element 1.2 can be omitted if the wash tank 26 extends below the first pre-rinse nozzles 1.1 of the first pre-rinse zone 1.
  • a first pre-rinsing tank 2.2 is arranged under the second pre-rinsing zone 2 such that the second pre-rinsing liquid sprayed from the second pre-rinsing nozzles 2.1 of this second pre-rinsing zone 2 flows into the first pre-rinsing tank 2.1.
  • the first pre-rinse tank 2.2 is thus second pre-rinse liquid 2.3.
  • a first liquid supply device 1.3 of Fig. 1 and a first liquid supply device 1.4 of Fig. 2 serves for the supply of pre-rinsing liquid from the first pre-rinse tank 2.2 as the first pre-rinse liquid to the first pre-rinse nozzles 1.1 of the first pre-rinse 1.
  • a second liquid supply device 2.4 is used in both embodiments according to the FIGS. 1 and 2 for supplying second pre-rinsing liquid from the first pre-rinsing tank to the second pre-rinsing nozzles 2.1 of the second pre-rinsing zone 2.
  • the second liquid-feeding device 2.4 is preferably a pump line with a pump 2.5.
  • the first liquid supply device 1.3 of Fig. 1 and the first liquid supply device 1.4 of Fig. 2 each contain a first pump line 6 with a first pre-rinse pump 1.5.
  • a first water heater 1.6 preferably on the pressure side of the first pre-rinse pump 1.5, arranged for heating the first pre-rinse liquid, which is conveyed by the first pre-rinse pump 1.5 to the first pre-rinse nozzles 1.1 of the first pre-rinsing zone.
  • the pressure side of the first pump line 6 is connected to the pre-purge nozzles 1.1 of the first pre-rinse zone 1.
  • the suction side of the first pump line 6 of the first liquid supply device 1.3 is directly connected to the second pre-rinse liquid 2.3, which is located in the first pre-rinse tank 2.2.
  • Fig. 2 is the suction side of the first pump line 6 of the first liquid supply device 1.4 is not directly, but connected via a filtration device 1.6 with the second pre-rinse liquid 2.3, which is located in the first pre-rinse tank 2.2.
  • a filtration device 1.6 With the second pre-rinse liquid 2.3, which is located in the first pre-rinse tank 2.2.
  • the filtration device 1.6 of Fig. 2 is a microfiltration device or an ultrafiltration device which comprises a filtration element 1.9 in the form of a microfiltration element or an ultrafiltration element, preferably in the form of a membrane, between a primary chamber 1.7 and a secondary chamber 1.8.
  • the primary chamber 1.7 is flown in the direction from an input 1.10 to an output 1.11, of which at least the input 1.10 is connected through an input line 1.12 to the second pre-rinse liquid 2.3 in the first pre-rinse tank 2.2, from the second pre-rinse liquid 2.3 from the first pre-rinse tank 2.2.
  • a pump 1.14 for conveying second pre-rinse liquid 2.3 from the first pre-rinse tank 2.2 through the primary chamber 1.7 therethrough.
  • the output line 1.13 also ends in the first pre-rinse tank 2.2.
  • the suction side of the first pre-wash pump 1.5 is connected to the secondary chamber 1.8.
  • the secondary chamber 1.8 contains through the filtration element 1.9 through a filtered part of the second pre-rinse liquid 2.3 from the first pre-rinsing tank 2.2, so that this part is the first pre-rinse, which from the pump line 6 of the first liquid supply device 1.4 of Fig. 2 the first pre-rinse nozzles 1.1 of the first pre-rinsing zone 1 is supplied.
  • the filtration device 1.6 is preferably a cross-flow filter.
  • the main difference between a microfiltration and an ultrafiltration lies in the different pore sizes and different structures of the Microfiltration elements and the ultrafiltration elements, which are preferably membranes. If they have a pore size of less than 0.1 ⁇ m, the filtration is referred to as ultrafiltration, whereas filtration with a pore size of greater than 0.1 ⁇ m to 100 ⁇ m is referred to as microfiltration.
  • the first liquid supply device 1.3 of Fig. 1 or 1.4 of Fig. 2 is separated from the second liquid supply device 2.4, so that by both independently pre-rinsing liquid from the first pre-rinsing 2.2 to the first pre-rinse nozzles 1.1 of the first pre-rinsing zone 1 and / or the second pre-rinsing 2.1 of the second Vor Titandüse can be supplied, the volume amounts of the first pre-rinsing liquid in the first pre-rinsing zone 1 and the second pre-rinse liquid in the second pre-rinse zone 2 separately adjustable.
  • the invention makes it possible to set the volume amount per hour of sprayed first pre-rinse liquid in the first pre-rinse zone 1 substantially smaller than the volume amount of sprayed second pre-rinse liquid in the second pre-rinse zone 2. This allows a considerably reduced need for final rinse liquid, which through the rinse nozzles 4.1 of the Rinsing zone 4 must be introduced into the transport dishwasher.
  • a second pre-rinsing tank 3.2 is arranged under the third pre-rinsing nozzles 3.1 of the third pre-rinsing zone 3 and under the final rinse nozzles 4.1 of the final rinse zone 4 in such a way that third rinse liquid 3.3 sprayed from the third pre-rinse nozzles 3.1 and clear rinse liquid sprayed from the rinse nozzles 4.1 onto the wash ware 20 are introduced into the second pre-rinse tank 3.2 drain.
  • the mixture of sprayed final rinse liquid and sprayed third pre-rinse liquid 3.3 collected in the second pre-rinse tank 3.2 is conveyed as a third pre-rinse liquid through a third pre-rinse pump line 3.4 by means of a pump 3.5 from the second pre-rinse tank 3.2 to the third pre-rinse nozzles 3.1 of the third pre-rinse zone 3.
  • Final rinse liquid is supplied to the final rinse nozzles 4.1 of the final rinse zone 4 through a final rinse liquid feed line 4.2, which may contain a water heater 4.3 (water heater).
  • the final-rinse liquid is water, which in microbiological terms has drinking water quality, preferably drinking water from a drinking water supply network. However, it can also be treated water such. B. softened, partially demineralized or demineralized) water.
  • the volume of clear rinse liquid required to rinse the rinsing product 20 at the rinse nozzles 4.1 of the final rinse zone 4 can be reduced per hour to rinse liquid required Wash items 20 to be completely cleaned.
  • a rinse aid metering device 30 is also provided for supplying rinse aid 32 from a rinse aid container 34 into the third pre-rinse liquid 3.3 into the second pre-rinse tank 3.2.
  • the metered addition of the final rinse liquid can by gravity or according to the embodiments of FIGS. 1 and 2 done by a rinse aid supply pump 36.
  • the suction side of the rinse aid supply pump 36 is connected to the interior of the rinse aid container 34 through a suction line 38.
  • the pressure side of the rinse aid supply pump 36 is connected by a pressure line 40 to the interior of the second pre-rinse tank 3.2.
  • this pressure line 40 may be connected to the pressure side of the rinse aid supply pump 36, a pressure line 42 which opens into the first pre-rinse tank 2.2 to supply the second pre-rinse liquid 2.3 rinse aid. Further, it is possible to provide both pressure lines 40 and 42, preferably each with a shut-off 41 and 43, so Both the second pre-rinse tank 3.2 and the first pre-rinse tank 2.2 rinse aid in metered amount can be supplied.
  • the washing nozzles 16 of the last of the at least one washing zone 14 are supplied with washing liquid from the washing tank 26 through a washing liquid pumping line 46 which contains a pump 48.
  • the wash tank 26 and / or the first pre-rinse tank 2.2 and / or the second pre-rinse tank 3.2 preferably each contain a drain valve 50 or 52 or 54, through which the tank in question can be emptied.
  • one or more further washing zones can be arranged opposite to the washware transport direction 24, which can be configured in a similar manner and are preferably each also provided with a wash tank.
  • the required quantities of liquid are dependent on the size of the transport dishwasher, the type of items to be cleaned, the type of contamination of the items to be washed and other factors.
  • the amount of liquid sprayed per unit time is preferably smaller in the first pre-rinse zone 1 than in the final rinse zone 4; in the second pre-rinse zone 2 greater than in the first pre-rinse zone 1, and also larger than in the final rinse zone 4, as well as greater or lesser than or equal to / as in the third pre-rinse zone 3; in the third pre-rinsing zone 3 greater than in the first pre-rinsing zone 1 and also larger than in the final rinse zone. 4
  • sprayed liquid can flow in a cascade system against the Spülguttransportides 24 from tank to tank of the zones.
  • a first liquid transfer path 61, z. B. a first overflow from the second pre-rinse tank 3.2 to the first pre-rinse tank 2.2
  • a second liquid transfer path 62 e.g. B. a second overflow, from the first pre-rinse tank 2.2 in the wash tank 26 of the washing zone 14
  • one each Liquid transfer path, z. B. an overflow provided from wash tank to wash tank.
  • a pump line can also be provided.
  • pre-rinse a pre-rinse whose rinse " is sometimes used in practice the term "post-wash " (post-wash ).
  • tanks and pumps may be located adjacent to the zones or in another building room or building floor other than the zones.

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  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)

Claims (11)

  1. Machine à laver la vaisselle à bande comprenant, dans l'ordre indiqué, chaque fois au moins une zone de lavage (14) avec des buses de lavage (16), une première zone de prérinçage (1) avec des premières buses de prérinçage (1.1), une deuxième zone de prérinçage (2) avec des deuxièmes buses de prérinçage (2.1), et une zone de rinçage (4) avec des buses de rinçage (4.1); un dispositif de transport (18) pour transporter la vaisselle (20) à travers lesdites zones dans la direction de transport de la vaisselle (24) depuis ladite au moins une zone de lavage (14) jusqu'à ladite au moins une zone de rinçage (4); une cuve de lavage (26), dans laquelle s'écoulent le liquide de lavage qui est projeté par les buses de lavage (16) de la dernière zone de lavage (14) dans la direction de transport de la vaisselle (24) et le premier liquide de prérinçage qui est projeté par les premières buses de prérinçage (1.1) de la première zone de prérinçage (1); une première cuve de prérinçage (2.2), dans laquelle s'écoule un deuxième liquide de prérinçage qui est projeté par les deuxièmes buses de prérinçage (2.1) dans la deuxième zone de prérinçage (2); des dispositifs de fourniture de liquide (1.3, 2.4; 1.4, 2.4) pour la fourniture de liquide de prérinçage à partir de la première cuve de prérinçage (2.2) comme deuxième liquide de prérinçage aux deuxièmes buses de prérinçage (2.1) et comme premier liquide de prérinçage aux premières buses de prérinçage (1.1), caractérisée en ce que les dispositifs de fourniture de liquide (1.3, 2.4; 1.4, 2.4) sont réalisés en vue de la fourniture séparée de liquide de prérinçage à partir de la première cuve de prérinçage (2.2) d'une part comme deuxième liquide de prérinçage aux deuxièmes buses de prérinçage (2.1) de la deuxième zone de prérinçage (2) et d'autre part comme premier liquide de prérinçage aux premières buses de prérinçage (1.1) de la première zone de prérinçage (1).
  2. Machine à laver la vaisselle à bande selon la revendication 1, caractérisée par une troisième zone de prérinçage (3) avec des troisièmes buses de prérinçage (3.1), qui est disposée entre la deuxième zone de prérinçage (2) et la zone de rinçage (4); une deuxième cuve de prérinçage (3.2), qui est disposée de telle manière que le liquide de rinçage projeté par les buses de rinçage (4.1) de la zone de rinçage (4) et le troisième liquide de prérinçage projeté par les troisièmes buses de prérinçage (3.1) de la troisième zone de prérinçage (3) s'écoulent dans la deuxième cuve de prérinçage (3.2); une conduite de pompage (3.4) pour la fourniture du troisième liquide de prérinçage de la deuxième cuve de prérinçage (3.2) aux troisièmes buses de prérinçage (3.1) de la troisième zone de prérinçage (3) .
  3. Machine à laver la vaisselle à bande selon la revendication 1 ou 2, caractérisée en ce que les dispositifs de fourniture de liquide comprennent une conduite de pompage (2.4) pour le deuxième liquide de prérinçage depuis la première cuve de prérinçage (2.2) jusqu'aux deuxièmes buses de prérinçage (2.1) de la deuxième zone de prérinçage (2).
  4. Machine à laver la vaisselle à bande selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les dispositifs de fourniture de liquide comprennent une conduite de pompage (6) de la première cuve de prérinçage (2.2) aux premières buses de prérinçage (1.1) de la première zone de prérinçage (1) pour la fourniture de liquide de prérinçage provenant de la première cuve de prérinçage (2.2) comme premier liquide de prérinçage aux premières buses de prérinçage (1.1) de la première zone de prérinçage (1).
  5. Machine à laver la vaisselle à bande selon l'une quelconque des revendications 1 à 3, caractérisée en ce que les dispositifs de fourniture de liquide comprennent un dispositif de filtrage (1.6) sous la forme d'un dispositif de microfiltration ou sous la forme d'un dispositif d'ultrafiltration, qui présente un côté primaire pour recevoir le deuxième liquide de prérinçage provenant de la première cuve de prérinçage (2.2) et un côté secondaire pour délivrer une partie microfiltrée ou ultrafiltrée du deuxième liquide de prérinçage comme premier liquide de prérinçage, et en ce que les dispositifs de fourniture de liquide comprennent une conduite de pompage (6) pour le premier liquide de prérinçage depuis le côté secondaire du dispositif de filtrage (1.6) jusqu'aux premières buses de prérinçage (1.1) de la première zone de prérinçage (1), pour fournir la partie filtrée du deuxième liquide de prérinçage comme premier liquide de prérinçage aux premières buses de prérinçage (1.1).
  6. Machine à laver la vaisselle à bande selon la revendication 5, caractérisée en ce que le dispositif de filtrage présente au moins un élément filtrant (1.9) sous la forme d'un élément de microfiltration ou sous la forme d'un élément d'ultrafiltration, qui sépare l'une de l'autre une chambre primaire (1.7) sur le côté primaire et une chambre secondaire (1.9) sur le côté secondaire, et en ce que la chambre primaire (1.7) présente une entrée (1.10) et une sortie (1.11) pour le passage du deuxième liquide de prérinçage provenant de la première cuve de prérinçage (2.2) à travers la chambre primaire (1.7).
  7. Machine à laver la vaisselle à bande selon la revendication 5 ou 6, caractérisée en ce que le dispositif de filtrage est un dispositif de filtrage à membrane.
  8. Machine à laver la vaisselle à bande selon au moins une des revendications précédentes, caractérisée par un dispositif de dosage de produit de rinçage (30) pour la fourniture dosée de produit de rinçage dans le liquide de prérinçage à projeter dans la troisième zone de prérinçage (3).
  9. Machine à laver la vaisselle à bande selon au moins une des revendications précédentes, caractérisée par un dispositif de dosage de produit de rinçage (30) pour la fourniture dosée de produit de rinçage dans le liquide de prérinçage à projeter dans la deuxième zone de prérinçage (2).
  10. Machine à laver la vaisselle à bande selon au moins une des revendications précédentes, caractérisée par un chemin de transfert de liquide (61) depuis la deuxième cuve de prérinçage (3.2) jusque dans la première cuve de prérinçage (2.2).
  11. Machine à laver la vaisselle à bande selon au moins une des revendications précédentes, caractérisée par un chemin de transfert de liquide (62) depuis la première cuve de prérinçage (2.2) jusque dans la cuve de lavage (26) de la dernière zone de lavage de ladite au moins une zone de lavage (14).
EP20060122637 2006-02-03 2006-10-20 Machine à laver la vaisselle à bande Expired - Fee Related EP1815779B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610005074 DE102006005074A1 (de) 2006-02-03 2006-02-03 Transportgeschirrspülmaschine

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EP1815779A2 EP1815779A2 (fr) 2007-08-08
EP1815779A3 EP1815779A3 (fr) 2008-04-30
EP1815779B1 true EP1815779B1 (fr) 2010-09-01

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ITMI20111323A1 (it) 2011-07-15 2013-01-16 Comenda Ali S P A Stazione di risciacquo perfezionata per macchine lavastoviglie a tunnel, e metodo di comando di tale stazione di risciacquo
ITMI20131930A1 (it) * 2013-11-20 2015-05-21 Ali Spa Modulo di risciacquo multistadio perfezionato per macchine lavastoviglie a tunnel, e macchina lavastoviglie a tunnel dotata di tale modulo
DE102014114719A1 (de) * 2014-10-10 2016-04-14 Winterhalter Gastronom Gmbh Transportgeschirrspülmaschine

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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
DE19836739A1 (de) * 1998-08-13 2000-02-17 Meiko Maschinenbau Gmbh & Co Geschirrspülmaschine
DE202005013348U1 (de) * 2004-09-18 2005-11-03 Premark Feg L.L.C., Wilmington Geschirrspülanlage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8394204B2 (en) 2007-05-26 2013-03-12 Premark Feg L.L.C. Commercial dishwasher with centrifugal pumps arranged in series

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EP1815779A2 (fr) 2007-08-08
DE502006007770D1 (de) 2010-10-14
DE102006005074A1 (de) 2007-08-09

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