EP1637059B1 - Dishwashing installation - Google Patents

Dishwashing installation Download PDF

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Publication number
EP1637059B1
EP1637059B1 EP05019186A EP05019186A EP1637059B1 EP 1637059 B1 EP1637059 B1 EP 1637059B1 EP 05019186 A EP05019186 A EP 05019186A EP 05019186 A EP05019186 A EP 05019186A EP 1637059 B1 EP1637059 B1 EP 1637059B1
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EP
European Patent Office
Prior art keywords
rinse
water
storage tank
spray nozzles
water storage
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
EP05019186A
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German (de)
French (fr)
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EP1637059A2 (en
EP1637059A3 (en
Inventor
Udo Erb
Jürgen Litterst
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.)
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Publication date
Application filed by Premark FEG LLC filed Critical Premark FEG LLC
Priority to DE202005015387U priority Critical patent/DE202005015387U1/en
Publication of EP1637059A2 publication Critical patent/EP1637059A2/en
Publication of EP1637059A3 publication Critical patent/EP1637059A3/en
Application granted granted Critical
Publication of EP1637059B1 publication Critical patent/EP1637059B1/en
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    • 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
    • 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 dishwashing machine, comprising at least one conveyor dishwasher, preferably a conveyor dishwasher or a basket conveyor dishwasher, according to the preamble of claim 1.
  • Such a dishwasher is from the JP 2003 126 000 A known.
  • the different spray nozzles of the rinse zone can be rinsing water from a storage tank, soft water or demineralized water, which may also be heated if necessary, depending on the dishes to be washed.
  • Prior art conveyor dishwashers include a dishwashing apparatus and recirculation circuits having elements for heating and / or purifying water and / or mixing different water streams to thereby refresh more polluted water with less polluted water.
  • a dishwasher shows the publication of a summary "Abstract of Invention" of the Russian patent RU 2 150 228 C1 ,
  • conveyor ware washer There are two types of conveyor ware washer.
  • the one type are tape washers (flight-type goods washers), in which the conveyor belt has holding elements for holding the dishes to be cleaned.
  • the other type are rack-conveyor ware washers, in which a transport mechanism transports baskets containing the dishes.
  • the conveyor belt or the transport mechanism is provided with a plurality of intermediate spaces or passage openings through which water sprayed onto the dishes can drain downwards.
  • Dishwashers are not only suitable for cleaning dishes in the form of plates, cups and bowls, but also for cleaning dishes in the form of spoons, knives and forks and for cleaning trays and for cleaning other objects used in catering establishments, especially in hotels , Restaurants and canteens.
  • the term "crockery" is used to represent all objects that can be cleaned by a dishwasher in order to simplify the description of the invention.
  • the object of the invention is to solve the problem of designing a dishwashing machine which contains at least one conveyor dishwasher in such a way that the cleaning operation of the dishes becomes more independent of the provision of water for the cleaning process.
  • a particular embodiment of the invention relates to a dishwashing machine comprising at least one conveyor dishwasher, preferably a conveyor dishwasher or a basket conveyor dishwasher, characterized in that the at least one conveyor dishwasher is divided into a dishwashing device and a water treatment station arranged spatially separate therefrom, and at least one recirculation circuit is formed, in which water is recirculated from the water treatment station to the dishwashing device and back again, the recirculation circuit in the dishwashing device having spray nozzles for spraying water onto the dishes and at least one water discharge opening for recirculating sprayed water to the water treatment station.
  • the water may be treated separately from the dishwashing apparatus, for example, cleaned, heated, pumped and / or altered Mixing water of different quality and / or by mixing water with other liquids or with lettermittein.
  • the water treatment station preferably contains a sieve device and / or a membrane filter device.
  • the dishwashing device contains a plurality, for example two, rinsing zones, the water treatment station having a screening device for the first rinsing zone and a membrane filter device for the second rinsing zone.
  • the screening device comprises a rotating screen cylinder, through which the water is passed, and a solids discharge device for discharging solids (dirt) from the water is arranged inside the screen cylinder.
  • FIG. 1 schematically a dishwasher according to the invention, without the invention being limited to the illustrated number of individual elements, areas or zones.
  • the water treatment station described below may be configured in various ways for one or more or all of the functions described below, such as, in particular, cleaning of the effluent from the at least one dishwashing device by filtering, screening, flushing and / or mechanically discharging solids and other impurities from the device Water and / or partial removal of dirty water and / or diluting dirty water with fresh water or with less contaminated, already used water, and / or heating the water Water before being recirculated from the water treatment station to the dishwashing device.
  • the treatment of the water may be to divide a pump assembly having a plurality of pumps for distributing the water among a plurality of dishwashing devices and / or different cleaning zones and / or different rinse zones of one or more dishwashing devices.
  • FIG. 1 shows a dishwasher with a dishwashing device 2 and with a spatially separate water treatment station 4.
  • the water treatment station 4 is preferably at least one floor below the dishwashing device 2 is arranged. As a result, water can drain from the dishwashing apparatus 2 to the water treatment station 4 by gravity without the need for a pump.
  • the floors can be separated by a building ceiling 6 or an intermediate floor.
  • the dishwashing device 2 and the water treatment station 4 together form a conveyor dishwasher (conveyor ware washer) in the form of a rack conveyor machine (rack-conveyor ware washer) or preferably accordingly FIG. 1 in the form of a tape-washing machine (flight-type goods washer).
  • the dishwashing device 2 contains at least one cleaning zone and then at least one rinsing zone.
  • the in FIG. 1 Dishwashing device 2 shown in the dish transport direction successively a first dishwashing zone 8, a second dishwashing zone 10, a third dishwashing zone 12, a first washing zone 14 and a second washing zone 16 on. Dishes are transported by an endless conveyor belt (conveyor) 18 through said zones 8 to 16.
  • zones 8 to 16 are nozzles for spraying water on the dishes, for example, above the conveyor belt 18 in the cleaning zones 8, 10 and 12 upper spray nozzles 20 and in the rinse zones 14 and 16 upper spray nozzles 21, 22, 23, and between upper run 24 and lower run 26 of the conveyor belt 18 arranged lower nozzles 28 in the Cleaning zones 8, 10 and 12, and lower nozzles 29, 30, 31 in the rinse zones 14 and 16.
  • each of the zones there is a water collecting floor 32, each having at least one water discharge opening 34 in each of the cleaning zones 8, 10 and 12 and having a water discharge opening 36 in the first rinse zone 14, to which the sprayed rinse water from both rinse zones 14 and 16 is inclined Zone bottom drains off by gravity.
  • All of the aforementioned nozzles in the cleaning zones 8, 10 and 12 and in the rinse zones 14 and 16 direct the water sprayed by them against the dishes to be cleaned or rinsed.
  • a fresh water supply line 40 for fresh water, preferably heated fresh water, can accordingly FIG. 1 into one of the two rinse zones 14, 16, preferably into the first rinse zone 14, or into a rinse water return line 42 connected to the water discharge opening 36 of this first rinse zone 14, or into a first rinse water storage tank 44.
  • a valve arrangement 46 arranged in the fresh water supply line 40 may be located at the location of the dishwashing device 2 or preferably at the location of the water treatment station 4.
  • a water supply 48 for the supply of demineralized water includes a valve assembly 50 and is connected to a heat exchange line 51 which extends through the upper spray nozzles 21, 22, 23 through both rinsing zones 14 and 16 so that the demineralized water flowing through it is heated by the water vapor rising in the rinsing zones 14 and 16.
  • the demineralized water flows to the heat exchanger conduit 51 through a heater 52 in the form of an electric heater or a heat exchanger (also called "booster") and is heated therein before being discharged from the lower and upper spray nozzles 31 and 23 of the second (last) rinse zone 16 is sprayed on the cleaned dishes.
  • the valve arrangement 50 of the water supply line 48 may be located at the location of the dishwashing device 2 or preferably at the location of the water treatment station 4.
  • a second rinse water storage tank 56 receives by gravity (or a pump) via a membrane filter 58 rinse water from the first rinse water storage tank 44.
  • the second rinse water storage tank 56 has a water overflow 60, from which overflowing water through an overflow pipe 63 in the first Rinse water storage tank 44 can flow back.
  • a first rinse water pump assembly 62 is connected in the water treatment station 4 with its suction side to a water outlet 64 of the first rinse water storage tank 44 and connected with its pressure side to the upstream beginning of a flow line 66, the downstream end of the first in the transport direction 65 of the harness lower and upper spray nozzles 29 and 21 of the first rinse zone 14 is connected.
  • the first rinse water pump assembly 62 preferably consists of a working pump 67, which has a sufficient for the promotion of the rinse water through the flow line 66 delivery capacity, and a parallel connected and optionally switchable reserve pump 68, which also one for the promotion of the rinse water through the flow line 66 has sufficient delivery capacity and thereby completely take over their function in case of failure of the operating pump 67.
  • a second flow line 70 is connected at its upstream start to the pressure side of a second rinse water pump assembly 72 whose suction side is connected to an outlet 74 of the second rinse water storage tank 56.
  • the second supply line 70 is connected at its downstream end via a heater 76 to the lower 30 and the upper 22 spray nozzles, which are arranged in the crockery transport direction 65 between the first and last spray nozzles 21, 29, 23 and 31 of the two rinse zones 14 and 16.
  • the heater 76 may be a heat exchanger or electric heater (booster).
  • the two heaters 52 and 76 of the two rinse zones 14 and 16 are preferably arranged in the dishwashing device 2 to avoid heat losses, but according to another embodiment may also be arranged in the water treatment station 4.
  • the second rinse water pump assembly 72 may consist of a single pump, but consists in the preferred embodiment of a working pump 77 and a parallel connected to them backup pump 78, which latter is optionally switchable when the operating pump 77 fails due to defect or maintenance.
  • the operation pump 77 and the reserve pump 78 each have a capacity sufficient for the conveyance of the purge water.
  • the first rinse water storage tank 44 preferably has a water overflow 80, from which water can flow through an overflow pipe 83 into a second cleaning water storage tank 84.
  • the second cleaning water storage tank 84 fresh water, preferably warm water, via a valve assembly 86 and a fresh water supply line 88 are supplied.
  • An outlet 90 of the second scrubbing water storage tank 84 is connected via a second scrubbing water pump assembly 92 to the upstream end of a flow line 94, which branches to a branch 96 via parallel flow lines 98-1, 98-2, 98-3 and 98-4 is fluidly connected to the upper and lower spray nozzles 20 and 28 of the cleaning zones 10 and 12.
  • the branch 96 of the feed line 94 could be arranged directly in the water treatment station 4 instead of in the dishwashing apparatus 2 on the pressure side of the second cleaning water pump assembly 92.
  • the second cleaning water pump assembly 92 preferably includes two operating pumps 102 and 104, which are connected in parallel with each other and each of which has sufficient capacity to one of the two cleaning zones Supply 10 and 12 with cleaning water.
  • a reserve pump 106 is connected in parallel, which is optionally switchable, if one of the operating pumps 102 or 104 fails.
  • the reserve pump 106 has the same pump capacity as one of the other two pumps.
  • a cleaning water line 108 is connected between the pressure side of the second cleaning water pump assembly 92 and the distribution point 96, the purpose of which will be described later.
  • the second cleaning water storage tank 84 has a water overflow device 120 from which water from the second cleaning water storage tank 84 can flow via an overflow pipe 122 into a first cleaning water storage tank 124 provided with an overflow device 130, through which water passes through an overflow pipe 132 can drain.
  • the first cleaning water storage tank 124 is preferably provided with a drainage drain 134.
  • the first cleaning water storage tank 124 fresh water, preferably hot water, via a valve assembly 136 of a fresh water supply line 138 are supplied.
  • An output 140 of the first cleaning water storage tank 124 is connected via a first cleaning water pump assembly 142 to the upstream end of a feed line 146 which is split at a branch point 148 onto two parallel feed line branches 146-1 and 146-2 which are adjacent to the upper one Spray nozzles 20 and the lower spray nozzles 28 of the first cleaning zone 8 are connected.
  • the branch point 148 may be correspondingly FIG. 1 in the dishwashing device 2 or according to an embodiment not shown in the water treatment station 4 on the pressure side of the first cleaning water pump assembly 142 may be arranged.
  • the first cleaning water pump assembly 142 preferably consists of an operating pump 152 and connected to it in parallel and optionally switchable reserve pump 154. Both pumps 152 and 154 are on the promotion of the Cleaning water in the first cleaning zone 8 required delivery capacity designed so that in case of failure or maintenance, the reserve pump 154 can be turned on in case of failure of the operating pump 152, so that even in such a case, the cleaning operation in the cleaning zone 8 can be maintained unchanged ,
  • the water discharge opening 34 of the first cleaning zone 8 is connected in fluid communication with a first screening device 170 via a return line 172.
  • the cleaning water purified by the first sieving device 170 flows into the first cleaning water storage tank 124.
  • the Wasserab technologicalö réelleen 34 of the second and the third cleaning zone 10 and 12 are each connected via a return line 160 or 162, which may be connected to a common return line 164 together, with a second screening device 170 fluidly connected, with contaminants are held by the screen and the cleaning water after the sieve device flows into the second cleaning water storage tank 84.
  • the sieve devices 170 and 174 are preferably rotary sieve devices which have a rotating screen cylinder 176 and 178, respectively, in whose interior the cleaning water of the return line 172 or 164 is directed. Cleaning water of the cleaning water pipe 108 is guided from outside to inside through the screen cylinders 176 and 178, respectively.
  • a conveying element preferably a screw 180 or 182 for discontinuous or preferably continuous discharge of solids from the cleaning water, which is located in the screen cylinder.
  • the discharged solid is in FIG. 1 denoted by 184 and 186 and shown schematically by an arrow.
  • the second cleaning water storage tank 84 and / or the first cleaning water storage tank 124 is preferably in each case a heating source 190, for example, a heat exchanger or an electric heater.
  • the following recirculation circuits include: a first recirculation circuit, in which the supply line 146 and the supply line sections 146-1, 146-2, further the return line 172, the first sieve device 170, the first cleaning water storage tank 124 and the first cleaning water pump assembly 142 are integrated. Further, a second recirculation circuit is provided, which the supply lines or feed line branches 94, 98-1, 98-2, 98-3, 98-4, the return lines 160, 162, 164, the second screening device 174, the second cleaning water storage tank 84th , and the second cleaning water pump assembly 92 includes.
  • a third recirculation circuit contains the supply line 66, the return line 42, the first rinse water storage tank 44 and the first rinse water pump assembly 62.
  • the last in the transport direction 65 of the harness fourth, recirculation circuit includes the supply line 70, in turn, the return line 42 and turn the first Rinse water storage tank 44, the membrane filter 58, the second rinse water storage tank 56, and the second rinse water pump assembly 72.
  • a particular advantage of the invention is that not only a dishwashing device 2 can be connected to the water treatment station 4, but that two or more dishwashing devices 2 can be connected to the single water treatment station 4. This can be done via additional flow lines and return lines, which are connected to the described storage tanks 124, 84, 44 and 56 and / or to the described screening devices 170 and 174 in terms of flow, or via parallel branches of the described flow lines and the described return lines, using the For this purpose, only valves or other shut-off elements 202, 204, 206, 208, 210, 212, 214, 216, 218 or 220 are required in the flow lines or the parallel branches. Each of these dishwashing devices 2 together with the common water treatment station 4 forms its own conveyor dishwashing machine.
  • the Water treatment station 4 for each dishwashing apparatus 2 a separate pump or pump group according to the described pump assemblies 72, 62, 92 and 142.
  • the respective flow lines of all dishwashers 2 connected so that each pump assembly in the manner mentioned requires only a single reserve pump, regardless of how many dishwashing devices 2 are connected to the common water treatment station 4.
  • each pumping arrangement includes at least as many operating pumps 77, 67, 102 and 152, respectively, as dishwashing devices 2 are provided, so that in the event of failure of such a pump, only one of these dishwashing devices 2 is affected and this affected dishwashing device with the reserve pump 78, 68 , 106, 154 of the pump assembly in question can continue to operate.
  • each pumping arrangement contains at least one operating pump and one reserve pump; that in the presence of two dishwashing devices 2, each pumping arrangement contains at least two operating pumps and one reserve pump; that, when using three dishwashing devices 2, each pumping arrangement includes three operating pumps and one standby pump; and so on.
  • the pump capacity which is necessary for the reserve case, reduced to a single reserve pump at each pump assembly.
  • two or more reserve pumps of an operating pump or of a group of operating pumps to be connected in parallel and to be optionally switchable.
  • the invention particularly relates to commercial dishwashers.
  • the inventive idea of arranging additional spray nozzles 22 and 30 between the spray nozzles 23, 31 of the last rinse zone 16 and the spray nozzles 21, 29 of the first rinse zone 14 in the tray transport direction 65 and supplying these additional spray nozzles 22 and 30 with a pre-used rinse liquid filtered by a membrane filter 58, can be used not only for dishwashers, in which a water treatment station 4 is arranged spatially separated from a dishwashing device 2, but also for conveyor dishwashers in the form of tape dishwashers and in the form of Korbtransport Schememaschinen, in which the dishwashing apparatus and the water treatment station without spatial separation integrated into the conveyor dishwasher are.
  • This inventive idea can be realized at least by the following embodiments:
  • Dishwashing machine comprising at least one conveyor dishwasher in the form of a belt conveyor dishwasher or a basket conveyor dishwasher, the conveyor dishwasher comprising at least one cleaning zone 8, 10, 12 with spray nozzles 20, 28 for spraying cleaning water onto the dishes; at least a first rinse zone 14 with spray nozzles 21, 29 for spraying rinse water onto the dishes; a final rinse zone 16 as a final rinse zone with spray nozzles 23, 31 for spraying rinse water onto the dishes; a transporting device 18 for transporting dishes through zones 8, 10, 12, 14 and 16; characterized by additional spray nozzles 22, 30 arranged in a tray transporting direction 65 between the spray nozzles 21, 29 of the first rinse zone 14 and the spray nozzles 23, 31 of the rinse zone 16 for spraying rinse water onto the dishes; a rinse water storage tank 44 for receiving the rinse water sprayed from the spray nozzles 23, 31 of the rinse zone 16, for receiving the rinse water sprayed from the additional spray nozzles 22, 30, and for receiving the rinse water sprayed from the spray nozzles 21, 29 of the first rinse zone 14;
  • Dishwashing system characterized in that in the additional Spülwasservorlaufweg 58, 56, 72, 70, 76, an additional rinse water storage tank 56 in the Spülwasserströmungsweg between the membrane filter 58 and the pump 77, 78 is arranged.
  • Dishwashing system characterized in that the additional rinse water storage tank 56 has an overflow 60, via which rinse water can flow back into the rinse water storage tank 44.
  • Dishwasher according to at least one of the preceding embodiments, characterized in that in the additional Spülwasservorlaufweg 58, 56, 72, 70, 76 downstream of the pump 77, 78, a heater 76 is arranged to heat the rinse water.
  • Dishwashing plant characterized in that at least one cleaning water storage tank 84, 124 is provided for receiving the cleaning water sprayed from the spray nozzles 20, 28 from at least one of the cleaning zones 8, 10, 12; in that at least one cleaning water supply line 92, 94 and 142, 146 with at least one pump 102, 104, 106 and 152, 154 from the at least one cleaning water storage tank 84, 124 to the spray nozzles 20, 28 of the at least a cleaning zone 8, 10, 12 is provided to these cleaning nozzles 20, 28 supply cleaning water from the cleaning water storage tank 84, 124, so that at least one cleaning water Rezirkulationsniklauf from the cleaning water storage tank 84, 124 to the spray nozzles 20, 28 of the respective cleaning zone 8, 10, 12 and back to the cleaning water storage tank 84, 124 is formed.
  • Dishwashing system characterized in that the rinse water storage tank 44 and the at least one cleaning water storage tank 84, 124 are each provided with a water overflow 80, 120, through which water against the Geschirrtransportides 65 can flow from storage tank to storage tank, starting from the rinse water storage tank 44 to the last in the crockery transport direction 65 cleaning water storage tank 120th

Description

Die Erfindung betrifft eine Geschirrspülanlage, enthaltend mindestens eine Transportspülmaschine, vorzugsweise eine Bandspülmaschine oder eine Korbtransportspülmaschine, gemäß dem Oberbegriff von Anspruch 1.The invention relates to a dishwashing machine, comprising at least one conveyor dishwasher, preferably a conveyor dishwasher or a basket conveyor dishwasher, according to the preamble of claim 1.

Eine solche Geschirrspülanlage ist aus der JP 2003 126 000 A bekannt. Den unterschiedlichen Sprühdüsen der Spülzone kann Spülwasser aus einem Speichertank, weiches Wasser oder vollentsalztes Wasser, welches jeweils gegebenenfalls auch noch erwärmt werden kann, in Abhängigkeit des zu spülenden Geschirrs zugeführt werden.Such a dishwasher is from the JP 2003 126 000 A known. The different spray nozzles of the rinse zone can be rinsing water from a storage tank, soft water or demineralized water, which may also be heated if necessary, depending on the dishes to be washed.

Transportspülmaschinen nach dem Stand der Technik enthalten eine Geschirrreinigungsvorrichtung und Rezirkulationskreisläufe mit Elementen zur Wassererwärmung und/oder zur Wasserreinigung und/oder zur Vermischung von verschiedenen Wasserströmen, um dadurch stärker verschmutztes Wasser mit weniger verschmutztem Wasser aufzufrischen.Prior art conveyor dishwashers include a dishwashing apparatus and recirculation circuits having elements for heating and / or purifying water and / or mixing different water streams to thereby refresh more polluted water with less polluted water.

Eine Geschirrspülmaschine zeigt beispielsweise die Veröffentlichung einer Zusammenfassung "Abstract of Invention" des russischen Patents RU 2 150 228 C1 .A dishwasher, for example, shows the publication of a summary "Abstract of Invention" of the Russian patent RU 2 150 228 C1 ,

Es gibt zwei Arten von Transportspülmaschinen (conveyor ware washer). Die eine Art sind Bandspülmaschinen (flight-type ware washers), bei welchen das Transportband Halteelemente zum Halten des zu reinigenden Geschirrs hat. Die andere Art sind Korbtransportmaschinen (rack-conveyor ware washers), bei welchen ein Transportmechanismus Körbe transportiert, welche das Geschirr enthalten. Bei allen Maschinenarten ist das Transportband bzw. der Transportmechanismus mit einer Vielzahl von Zwischenräumen oder Durchgangsöffnungen versehen, durch welche auf das Geschirr gesprühtes Wasser nach unten ablaufen kann.There are two types of conveyor ware washer. The one type are tape washers (flight-type goods washers), in which the conveyor belt has holding elements for holding the dishes to be cleaned. The other type are rack-conveyor ware washers, in which a transport mechanism transports baskets containing the dishes. In all types of machines, the conveyor belt or the transport mechanism is provided with a plurality of intermediate spaces or passage openings through which water sprayed onto the dishes can drain downwards.

Geschirrspülmaschinen eignen sich nicht nur zum Reinigen von Geschirr in Form von Tellern, Tassen und Schüsseln, sondern auch zum Reinigen von Geschirr in Form von Löffeln, Messern und Gabeln und zum Reinigen von Tabletts sowie zum Reinigen von anderen in Verpflegungsbetrieben verwendeten Gegenständen, insbesondere in Hotels, Restaurants und Kantinen. Im Rahmen der vorliegenden Beschreibung wird deshalb der Ausdruck "Geschirr" stellvertretend für alle durch eine Geschirrspülmaschine üblicherweise reinigbare Gegenstände verwendet, um die Beschreibung der Erfindung zu vereinfachen.Dishwashers are not only suitable for cleaning dishes in the form of plates, cups and bowls, but also for cleaning dishes in the form of spoons, knives and forks and for cleaning trays and for cleaning other objects used in catering establishments, especially in hotels , Restaurants and canteens. In the context of the present description, therefore, the term "crockery" is used to represent all objects that can be cleaned by a dishwasher in order to simplify the description of the invention.

Durch die Erfindung soll die Aufgabe gelöst werden, eine Geschirrspülanlage, welche mindestens eine Transportspülmaschine enthält, derart auszubilden, dass der Reinigungsbetrieb des Geschirrs unabhängiger wird von der Bereitstellung von Wasser für den Reinigungsvorgang.The object of the invention is to solve the problem of designing a dishwashing machine which contains at least one conveyor dishwasher in such a way that the cleaning operation of the dishes becomes more independent of the provision of water for the cleaning process.

Diese Aufgabe wird gemäß der Erfindung durch die Merkmale von Anspruch 1 gelöst.This object is achieved according to the invention by the features of claim 1.

Vorteile: Reduzierung des Frischwasserverbrauches und Optimierung des Klarspülergebnisses.Advantages: Reduction of fresh water consumption and optimization of the rinse result.

Eine besondere Ausführungsform der Erfindung betrifft eine Geschirrspülanlage, enthaltend mindestens eine Transportspülmaschine, vorzugsweise eine Bandspülmaschine oder eine Korbtransportspülmaschine, dadurch gekennzeichnet, dass die mindestens eine Transportspülmaschine auf eine Geschirrreinigungsvorrichtung und eine räumlich davon getrennt angeordnete Wasserbehandlungsstation aufgeteilt ist, und dass mindestens ein Rezirkulationskreislauf gebildet ist, in welchem Wasser von der Wasserbehandlungsstation zur Geschirrreinigungsvorrichtung und wieder zurückrezirkuliert wird, wobei der Rezirkulationskreislauf in der Geschirrreinigungsvorrichtung Sprühdüsen zum Sprühen von Wasser auf das Geschirr und mindestens eine Wasserabführöffnung zum Zurückrezirkulieren von versprühtem Wasser zur Wasserbehandlungsstation aufweist.A particular embodiment of the invention relates to a dishwashing machine comprising at least one conveyor dishwasher, preferably a conveyor dishwasher or a basket conveyor dishwasher, characterized in that the at least one conveyor dishwasher is divided into a dishwashing device and a water treatment station arranged spatially separate therefrom, and at least one recirculation circuit is formed, in which water is recirculated from the water treatment station to the dishwashing device and back again, the recirculation circuit in the dishwashing device having spray nozzles for spraying water onto the dishes and at least one water discharge opening for recirculating sprayed water to the water treatment station.

Vorteile der Erfindung: Das Wasser kann getrennt von der Geschirrreinigungsvorrichtung behandelt werden, beispielsweise gereinigt werden, erwärmt werden, durch Pumpen gefördert werden und/oder verändert werden durch Vermischen von Wasser unterschiedlicher Qualität und/oder durch Vermischen von Wasser mit anderen Flüssigkeiten oder mit Zusatzmittein.Advantages of the Invention: The water may be treated separately from the dishwashing apparatus, for example, cleaned, heated, pumped and / or altered Mixing water of different quality and / or by mixing water with other liquids or with Zusatzmittein.

Weitere Merkmale und Vorteile ergeben sich aus der nachfolgenden Beschreibung der Erfindung und den Patentansprüchen. Alle vorstehend und nachfolgend beschriebenen Merkmale der Erfindung sind einzeln und in Teilkombination zur Bildung von weiteren Maschinenvarianten benutzbar.Further features and advantages will become apparent from the following description of the invention and the claims. All of the features of the invention described above and below can be used individually and in partial combination to form further machine variants.

Die Wasserbehandlungsstation enthält vorzugsweise eine Siebvorrichtung und/oder eine Membranfiltervorrichtung. Gemäß einer besonderen Ausführungsform der Erfindung enthält die Geschirrreinigungsvorrichtung mehrere, beispielsweise zwei, Spülzonen, wobei die Wasserbehandlungsstation für die erste Spülzone eine Siebvorrichtung und für die zweite Spülzone eine Membranfiltervorrichtung aufweist.The water treatment station preferably contains a sieve device and / or a membrane filter device. According to a particular embodiment of the invention, the dishwashing device contains a plurality, for example two, rinsing zones, the water treatment station having a screening device for the first rinsing zone and a membrane filter device for the second rinsing zone.

Gemäß einer ebenfalls bevorzugten Ausführungsform der Erfindung weist die Siebvorrichtung einen rotierenden Siebzylinder auf, durch welchen das Wasser hindurchgeleitet wird, und es ist eine Feststoff-Austragsvorrichtung zum Austragen von Feststoffen (Schmutz) aus dem Wasser im Inneren des Siebzylinders angeordnet.According to a likewise preferred embodiment of the invention, the screening device comprises a rotating screen cylinder, through which the water is passed, and a solids discharge device for discharging solids (dirt) from the water is arranged inside the screen cylinder.

Die Erfindung wird im Folgenden mit Bezug auf die beigefügte Zeichnung anhand einer bevorzugten Ausführungsform als Beispiel beschrieben. Die Zeichnung zeigt alsThe invention will now be described by way of example with reference to the accompanying drawing of a preferred embodiment. The drawing shows as

Figur 1 schematisch eine Geschirrspülanlage nach der Erfindung, ohne dass die Erfindung auf die dargestellte Anzahl von einzelnen Elementen, Bereichen oder Zonen beschränkt ist. FIG. 1 schematically a dishwasher according to the invention, without the invention being limited to the illustrated number of individual elements, areas or zones.

Die nachfolgend beschriebene Wasserbehandlungsstation kann auf verschiedene Arten ausgebildet sein für eine oder für mehrere oder alle der nachfolgend beschriebenen Funktionen wie insbesondere Reinigen des aus der mindestens einen Geschirrreinigungsvorrichtung abfließenden Wassers durch Filtern, Sieben, Ausschwemmen und/oder mechanisches Austragen von Feststoffen und anderen Verunreinigungen aus dem Wasser und/oder teilweises Entnehmen von schmutzigem Wasser und/oder Verdünnen von schmutzigem Wasser mit frischem Wasser oder mit weniger verschmutztem, bereits verwendetem Wasser, und/oder Erwärmen des Wassers, bevor es von der Wasserbehandlungsstation zur Geschirrreinigungsvorrichtung zurückrezirkuliert wird. Stattdessen oder gleichzeitig kann die Behandlung des Wassers auch darin bestehen, dass eine Pumpenanordnung mit mehreren Pumpen zur Verteilung des Wassers auf mehrere Geschirrreinigungsvorrichtungen und/oder auf verschiedene Reinigungszonen und/oder verschiedene Spülzonen einer oder mehrerer Geschirrreinigungsvorrichtungen aufgeteilt wird.The water treatment station described below may be configured in various ways for one or more or all of the functions described below, such as, in particular, cleaning of the effluent from the at least one dishwashing device by filtering, screening, flushing and / or mechanically discharging solids and other impurities from the device Water and / or partial removal of dirty water and / or diluting dirty water with fresh water or with less contaminated, already used water, and / or heating the water Water before being recirculated from the water treatment station to the dishwashing device. Alternatively, or simultaneously, the treatment of the water may be to divide a pump assembly having a plurality of pumps for distributing the water among a plurality of dishwashing devices and / or different cleaning zones and / or different rinse zones of one or more dishwashing devices.

Die im Folgenden mit Bezug auf Figur 1 beschriebene Geschirrspülanlage nach der Erfindung ist durch eine Vielzahl der vorgenannten Merkmale optimiert.The following with reference to FIG. 1 Dishwasher according to the invention described is optimized by a variety of the aforementioned features.

Figur 1 zeigt eine Geschirrspülanlage mit einer Geschirrreinigungsvorrichtung 2 und mit einer räumlich davon getrennten Wasserbehandlungsstation 4. Die Wasserbehandlungsstation 4 ist vorzugsweise mindestens ein Stockwerk tiefer als die Geschirrreinigungsvorrichtung 2 angeordnet. Dadurch kann Wasser von der Geschirrreinigungsvorrichtung 2 zur Wasserbehandlungsstation 4 durch Schwerkraft abfließen, ohne dass dafür eine Pumpe erforderlich ist. Die Stockwerke können durch eine Gebäudedecke 6 oder einen Zwischenboden voneinander getrennt sein. Die Geschirrspülvorrichtung 2 und die Wasserbehandlungsstation 4 bilden zusammen eine Transportspülmaschine (conveyor ware washer) in Form einer Korbtransportmaschine (rack-conveyor ware washer) oder vorzugsweise entsprechend Figur 1 in Form einer Bandspülmaschine (flight-type ware washer). FIG. 1 shows a dishwasher with a dishwashing device 2 and with a spatially separate water treatment station 4. The water treatment station 4 is preferably at least one floor below the dishwashing device 2 is arranged. As a result, water can drain from the dishwashing apparatus 2 to the water treatment station 4 by gravity without the need for a pump. The floors can be separated by a building ceiling 6 or an intermediate floor. The dishwashing device 2 and the water treatment station 4 together form a conveyor dishwasher (conveyor ware washer) in the form of a rack conveyor machine (rack-conveyor ware washer) or preferably accordingly FIG. 1 in the form of a tape-washing machine (flight-type goods washer).

Die Geschirrreinigungsvorrichtung 2 enthält mindestens eine Reinigungszone und danach mindestens eine Spülzone. Als Beispiel weist die in Figur 1 gezeigte Geschirrreinigungsvorrichtung 2 in Geschirrtransportrichtung nacheinander eine erste Geschirrreinigungszone 8, eine zweite Geschirrreinigungszone 10, eine dritte Geschirrreinigungszone 12, eine erste Spülzone 14 und eine zweite Spülzone 16 auf. Geschirr wird von einem endlosen Transportband (conveyor) 18 durch die genannten Zonen 8 bis 16 transportiert. In den Zonen 8 bis 16 befinden sich Düsen zum Sprühen von Wasser auf das Geschirr, beispielsweise über dem Transportband 18 in den Reinigungszonen 8, 10 und 12 obere Sprühdüsen 20 und in den Spülzonen 14 und 16 obere Sprühdüsen 21, 22, 23, und zwischen oberem Trum 24 und unterem Trum 26 des Transportbandes 18 angeordnete untere Düsen 28 in den Reinigungszonen 8, 10 und 12, und untere Düsen 29, 30, 31 in den Spülzonen 14 und 16.The dishwashing device 2 contains at least one cleaning zone and then at least one rinsing zone. As an example, the in FIG. 1 Dishwashing device 2 shown in the dish transport direction successively a first dishwashing zone 8, a second dishwashing zone 10, a third dishwashing zone 12, a first washing zone 14 and a second washing zone 16 on. Dishes are transported by an endless conveyor belt (conveyor) 18 through said zones 8 to 16. In the zones 8 to 16 are nozzles for spraying water on the dishes, for example, above the conveyor belt 18 in the cleaning zones 8, 10 and 12 upper spray nozzles 20 and in the rinse zones 14 and 16 upper spray nozzles 21, 22, 23, and between upper run 24 and lower run 26 of the conveyor belt 18 arranged lower nozzles 28 in the Cleaning zones 8, 10 and 12, and lower nozzles 29, 30, 31 in the rinse zones 14 and 16.

In den Zonen befindet sich jeweils ein Wassersammelboden 32 mit jeweils mindestens einer Wasserabführöffnung 34 in jeder der Reinigungszonen 8, 10 und 12 und mit einer Wasserabführöffnung 36 in der ersten Spülzone 14, zu welcher das versprühte Spülwasser von beiden Spülzonen 14 und 16 durch entsprechend schräg gestalteten Zonenboden durch Schwerkraft abfließt.In each of the zones there is a water collecting floor 32, each having at least one water discharge opening 34 in each of the cleaning zones 8, 10 and 12 and having a water discharge opening 36 in the first rinse zone 14, to which the sprayed rinse water from both rinse zones 14 and 16 is inclined Zone bottom drains off by gravity.

Alle vorgenannten Düsen in den Reinigungszonen 8, 10 und 12 und in den Spülzonen 14 und 16 richten das von ihnen versprühte Wasser gegen das zu reinigende bzw. das zu spülende Geschirr.All of the aforementioned nozzles in the cleaning zones 8, 10 and 12 and in the rinse zones 14 and 16 direct the water sprayed by them against the dishes to be cleaned or rinsed.

Eine Frischwasserzufuhrleitung 40 für Frischwasser, vorzugsweise erwärmtes Frischwasser, kann entsprechend Figur 1 in eine der beiden Spülzonen 14, 16, vorzugsweise in die erste Spülzone 14, oder in eine an die Wasserabführöffnung 36 dieser ersten Spülzone 14 angeschlossene Spülwasserrücklaufleitung 42, oder in einen ersten Spülwasser-Speichertank 44 münden. Eine in der Frischwasserzulaufleitung 40 angeordnete Ventilanordnung 46 kann sich am Ort der Geschirrreinigungsvorrichtung 2 oder vorzugsweise am Ort der Wasserbehandlungsstation 4 befinden.A fresh water supply line 40 for fresh water, preferably heated fresh water, can accordingly FIG. 1 into one of the two rinse zones 14, 16, preferably into the first rinse zone 14, or into a rinse water return line 42 connected to the water discharge opening 36 of this first rinse zone 14, or into a first rinse water storage tank 44. A valve arrangement 46 arranged in the fresh water supply line 40 may be located at the location of the dishwashing device 2 or preferably at the location of the water treatment station 4.

Eine Wasserzuleitung 48 für die Zufuhr von entmineralisiertem Wasser (oder gemäß einer anderen Ausführungsform zur Zufuhr von Frischwasser) enthält eine Ventilanordnung 50 und ist an eine Wärmetauscherleitung 51 angeschlossen, welche sich über den oberen Sprühdüsen 21, 22, 23 durch beide Spülzonen 14 und 16 erstreckt, sodass das durch sie hindurchströmendes entmineralisiertes Wasser von dem in den Spülzonen 14 und 16 aufsteigenden Wasserdampf erwärmt wird. Das entmineralisierte Wasser strömt nach der Wärmetauscherleitung 51 durch eine Heizeinrichtung 52 in Form einer elektrischen Heizung oder eines Wärmetauschers (auch "booster" genannt), und wird darin erwärmt, bevor es von den unteren und oberen Sprühdüsen 31 und 23 der zweiten (letzten) Spülzone 16 auf das gereinigte Geschirr gesprüht wird.A water supply 48 for the supply of demineralized water (or according to another embodiment for the supply of fresh water) includes a valve assembly 50 and is connected to a heat exchange line 51 which extends through the upper spray nozzles 21, 22, 23 through both rinsing zones 14 and 16 so that the demineralized water flowing through it is heated by the water vapor rising in the rinsing zones 14 and 16. The demineralized water flows to the heat exchanger conduit 51 through a heater 52 in the form of an electric heater or a heat exchanger (also called "booster") and is heated therein before being discharged from the lower and upper spray nozzles 31 and 23 of the second (last) rinse zone 16 is sprayed on the cleaned dishes.

Die Ventilanordnung 50 der Wasserzuleitung 48 kann sich am Ort der Geschirrreinigungsvorrichtung 2 oder vorzugsweise am Ort der Wasserbehandlungsstation 4 befinden.The valve arrangement 50 of the water supply line 48 may be located at the location of the dishwashing device 2 or preferably at the location of the water treatment station 4.

Ein zweiter Spülwasser-Speichertank 56 erhält durch Schwerkraft (oder eine Pumpe) über einen Membranfilter 58 Spülwasser aus dem ersten Spülwasser-Speichertank 44. Der zweite Spülwasser-Speichertank 56 weist einen Wasserüberlauf 60 auf, von welchem überlaufendes Wasser durch eine Überlaufleitung 63 in den ersten Spülwasser-Speichertank 44 zurückfließen kann.A second rinse water storage tank 56 receives by gravity (or a pump) via a membrane filter 58 rinse water from the first rinse water storage tank 44. The second rinse water storage tank 56 has a water overflow 60, from which overflowing water through an overflow pipe 63 in the first Rinse water storage tank 44 can flow back.

Eine erste Spülwasser-Pumpenanordnung 62 ist in der Wasserbehandlungsstation 4 mit ihrer Saugseite an einen Wasserauslass 64 des ersten Spülwasser-Speichertanks 44 angeschlossen und mit ihrer Druckseite an den stromaufwärtigen Anfang einer Vorlaufleitung 66 angeschlossen, deren stromabwärtiges Ende an die in Transportrichtung 65 des Geschirrs ersten unteren und oberen Sprühdüsen 29 und 21 der ersten Spülzone 14 angeschlossen ist.A first rinse water pump assembly 62 is connected in the water treatment station 4 with its suction side to a water outlet 64 of the first rinse water storage tank 44 and connected with its pressure side to the upstream beginning of a flow line 66, the downstream end of the first in the transport direction 65 of the harness lower and upper spray nozzles 29 and 21 of the first rinse zone 14 is connected.

Die erste Spülwasser-Pumpenanordnung 62 besteht vorzugsweise aus einer Betriebspumpe 67, welche eine für die Förderung des Spülwassers durch die Vorlaufleitung 66 ausreichende Förderkapazität hat, und einer ihr parallel geschalteten und wahlweise zuschaltbaren Reservepumpe 68, welche ebenfalls eine für die Förderung des Spülwassers durch die Vorlaufleitung 66 ausreichende Förderkapazität hat und dadurch bei einem Ausfall der Betriebspumpe 67 deren Funktion vollständig übernehmen kann.The first rinse water pump assembly 62 preferably consists of a working pump 67, which has a sufficient for the promotion of the rinse water through the flow line 66 delivery capacity, and a parallel connected and optionally switchable reserve pump 68, which also one for the promotion of the rinse water through the flow line 66 has sufficient delivery capacity and thereby completely take over their function in case of failure of the operating pump 67.

Eine zweite Vorlaufleitung 70 ist an ihrem stromaufwärtigen Anfang an die Druckseite einer zweiten Spülwasser-Pumpenanordnung 72 angeschlossen, deren Saugseite an einen Ausgang 74 des zweiten Spülwasser-Speichertanks 56 angeschlossen ist. Die zweite Vorlaufleitung 70 ist an ihrem stromabwärtigen Ende über eine Heizeinrichtung 76 an die unteren 30 und die oberen 22 Sprühdüsen angeschlossen, welche in Geschirrtransportrichtung 65 zwischen den ersten und letzten Sprühdüsen 21, 29, 23 und 31 der beiden Spülzonen 14 und 16 angeordnet sind. Die Heizeinrichtung 76 kann ein Wärmetauscher oder elektrischer Heizkörper (Booster) sein.A second flow line 70 is connected at its upstream start to the pressure side of a second rinse water pump assembly 72 whose suction side is connected to an outlet 74 of the second rinse water storage tank 56. The second supply line 70 is connected at its downstream end via a heater 76 to the lower 30 and the upper 22 spray nozzles, which are arranged in the crockery transport direction 65 between the first and last spray nozzles 21, 29, 23 and 31 of the two rinse zones 14 and 16. The heater 76 may be a heat exchanger or electric heater (booster).

Die beiden Heizeinrichtungen 52 und 76 der beiden Spülzonen 14 und 16 sind zur Vermeidung von Wärmeverlusten vorzugsweise in der Geschirrreinigungsvorrichtung 2 angeordnet, können jedoch gemäß einer anderen Ausführungsform auch in der Wasserbehandlungsstation 4 angeordnet sein.The two heaters 52 and 76 of the two rinse zones 14 and 16 are preferably arranged in the dishwashing device 2 to avoid heat losses, but according to another embodiment may also be arranged in the water treatment station 4.

Die zweite Spülwasser-Pumpenanordnung 72 kann aus einer einzigen Pumpe bestehen, besteht jedoch gemäß der bevorzugten Ausführungsform aus einer Betriebspumpe 77 und einer zu ihr parallel geschalteten Reservepumpe 78, welch letztere wahlweise zuschaltbar ist, wenn die Betriebspumpe 77 ausfällt wegen Defekt oder Wartungsarbeiten. Die Betriebspumpe 77 und die Reservepumpe 78 haben jeweils eine für die Förderung des Spülwassers ausreichende Kapazität.The second rinse water pump assembly 72 may consist of a single pump, but consists in the preferred embodiment of a working pump 77 and a parallel connected to them backup pump 78, which latter is optionally switchable when the operating pump 77 fails due to defect or maintenance. The operation pump 77 and the reserve pump 78 each have a capacity sufficient for the conveyance of the purge water.

Der erste Spülwasser-Speichertank 44 weist vorzugsweise einen Wasserüberlauf 80 auf, von welchem Wasser durch eine Überlaufleitung 83 in einen zweiten Reinigungswasser-Speichertank 84 fließen kann.The first rinse water storage tank 44 preferably has a water overflow 80, from which water can flow through an overflow pipe 83 into a second cleaning water storage tank 84.

Dem zweiten Reinigungswasser-Speichertank 84 kann Frischwasser, vorzugsweise warmes Wasser, über eine Ventilanordnung 86 und eine Frischwasserzuleitung 88 zugeführt werden.The second cleaning water storage tank 84 fresh water, preferably warm water, via a valve assembly 86 and a fresh water supply line 88 are supplied.

Ein Ausgang 90 des zweiten Reinigungswasser-Speichertanks 84 ist über eine zweite Reinigungswasser-Pumpenanordnung 92 an das stromaufwärtige Ende einer Vorlaufleitung 94 angeschlossen, welche nach einer Zweigstelle 96 über zueinander parallele Vorlaufleitungszweige 98-1, 98-2, 98-3 und 98-4 mit den oberen und unteren Sprühdüsen 20 und 28 der Reinigungszonen 10 und 12 strömungsmäßig verbunden ist.An outlet 90 of the second scrubbing water storage tank 84 is connected via a second scrubbing water pump assembly 92 to the upstream end of a flow line 94, which branches to a branch 96 via parallel flow lines 98-1, 98-2, 98-3 and 98-4 is fluidly connected to the upper and lower spray nozzles 20 and 28 of the cleaning zones 10 and 12.

Die Zweigstelle 96 der Vorlaufleitung 94 könnte anstatt in der Geschirrreinigungsvorrichtung 2 in der Wasserbehandlungsstation 4 unmittelbar auf der Druckseite der zweiten Reinigungswasser-Pumpenanordnung 92 angeordnet sein.The branch 96 of the feed line 94 could be arranged directly in the water treatment station 4 instead of in the dishwashing apparatus 2 on the pressure side of the second cleaning water pump assembly 92.

Die zweite Reinigungswasser-Pumpenanordnung 92 enthält vorzugsweise zwei Betriebspumpen 102 und 104, welche zueinander parallel geschaltet sind und von welchen jede die ausreichende Kapazität hat, um eine der beiden Reinigungszonen 10 und 12 mit Reinigungswasser zu versorgen. Vorzugsweise ist zu den beiden Betriebspumpen 102 und 104 eine Reservepumpe 106 parallel geschaltet, welche wahlweise zuschaltbar ist, falls eine der Betriebspumpen 102 oder 104 ausfällt. Die Reservepumpe 106 hat die gleiche Pumpenkapazität wie eine der beiden anderen Pumpen.The second cleaning water pump assembly 92 preferably includes two operating pumps 102 and 104, which are connected in parallel with each other and each of which has sufficient capacity to one of the two cleaning zones Supply 10 and 12 with cleaning water. Preferably, to the two operating pumps 102 and 104, a reserve pump 106 is connected in parallel, which is optionally switchable, if one of the operating pumps 102 or 104 fails. The reserve pump 106 has the same pump capacity as one of the other two pumps.

An die Vorlaufleitung 94 des zweiten Reinigungswasser-Speichertanks 2 ist zwischen der Druckseite der zweiten Reinigungswasser-Pumpenanordnung 92 und der Verteilerstelle 96 eine Reinigungswasserleitung 108 angeschlossen, deren Zweck später beschrieben wird.To the supply line 94 of the second cleaning water storage tank 2, a cleaning water line 108 is connected between the pressure side of the second cleaning water pump assembly 92 and the distribution point 96, the purpose of which will be described later.

Der zweite Reinigungswasser-Speichertank 84 weist eine Wasserüberlaufvorrichtung 120 auf, von welchem Wasser aus dem zweiten Reinigungswasser-Speichertank 84 über eine Überlaufleitung 122 in einen ersten Reinigungswasser-Speichertank 124 fließen kann, welcher mit einer Überlaufvorrichtung 130 versehen ist, über welchen Wasser durch eine Überlaufleitung 132 abfließen kann. Der erste Reinigungswasser-Speichertank 124 ist vorzugsweise mit einem Entleerungs-Ablauf 134 versehen.The second cleaning water storage tank 84 has a water overflow device 120 from which water from the second cleaning water storage tank 84 can flow via an overflow pipe 122 into a first cleaning water storage tank 124 provided with an overflow device 130, through which water passes through an overflow pipe 132 can drain. The first cleaning water storage tank 124 is preferably provided with a drainage drain 134.

Im Bedarfsfalle kann dem ersten Reinigungswasser-Speichertank 124 Frischwasser, vorzugsweise Warmwasser, über eine Ventilanordnung 136 einer Frischwasserzuleitung 138 zugeführt werden.If necessary, the first cleaning water storage tank 124 fresh water, preferably hot water, via a valve assembly 136 of a fresh water supply line 138 are supplied.

Ein Ausgang 140 des ersten Reinigungswasser-Speichertanks 124 ist über eine erste Reinigungswasser-Pumpenanordnung 142 an das stromaufwärtige Ende einer Vorlaufleitung 146 angeschlossen, welche an einer Verzweigungsstelle 148 auf zwei zueinander parallele Vorlaufleitungszweige 146-1 und 146-2 aufgeteilt ist, welche an die oberen Sprühdüsen 20 bzw. die unteren Sprühdüsen 28 der ersten Reinigungszone 8 angeschlossen sind. Die Verzweigungsstelle 148 kann entsprechend Figur 1 in der Geschirrreinigungsvorrichtung 2 oder gemäß einer nicht gezeigten Ausführungsform in der Wasserbehandlungsstation 4 auf der Druckseite der ersten Reinigungswasser-Pumpenanordnung 142 angeordnet sein.An output 140 of the first cleaning water storage tank 124 is connected via a first cleaning water pump assembly 142 to the upstream end of a feed line 146 which is split at a branch point 148 onto two parallel feed line branches 146-1 and 146-2 which are adjacent to the upper one Spray nozzles 20 and the lower spray nozzles 28 of the first cleaning zone 8 are connected. The branch point 148 may be correspondingly FIG. 1 in the dishwashing device 2 or according to an embodiment not shown in the water treatment station 4 on the pressure side of the first cleaning water pump assembly 142 may be arranged.

Die erste Reinigungswasser-Pumpenanordnung 142 besteht vorzugsweise aus einer Betriebspumpe 152 und einer zu ihr parallel geschaltet und wahlweise zuschaltbaren Reservepumpe 154. Beide Pumpen 152 und 154 sind auf die zur Förderung des Reinigungswassers in die erste Reinigungszone 8 erforderliche Förderkapazität ausgelegt, so dass bei einem Ausfall der Betriebspumpe 152 im Falle eines Defektes oder bei Wartungsarbeiten stattdessen die Reservepumpe 154 eingeschaltet werden kann, sodass auch in einem solchen Falle der Reinigungsbetrieb in der Reinigungszone 8 unverändert aufrecht erhalten werden kann.The first cleaning water pump assembly 142 preferably consists of an operating pump 152 and connected to it in parallel and optionally switchable reserve pump 154. Both pumps 152 and 154 are on the promotion of the Cleaning water in the first cleaning zone 8 required delivery capacity designed so that in case of failure or maintenance, the reserve pump 154 can be turned on in case of failure of the operating pump 152, so that even in such a case, the cleaning operation in the cleaning zone 8 can be maintained unchanged ,

Die Wasserabführöffnung 34 der ersten Reinigungszone 8 ist über eine Rücklaufleitung 172 mit einer ersten Siebvorrichtung 170 strömungsmäßig verbunden. Das von der ersten Siebvorrichtung 170 gereinigte Reinigungswasser strömt in den ersten Reinigungswasser-Speichertank 124.The water discharge opening 34 of the first cleaning zone 8 is connected in fluid communication with a first screening device 170 via a return line 172. The cleaning water purified by the first sieving device 170 flows into the first cleaning water storage tank 124.

Die Wasserabführöffnungen 34 der zweiten und der dritten Reinigungszone 10 und 12 sind jeweils über eine Rücklaufleitung 160 bzw. 162, welche zu einer gemeinsamen Rücklaufleitung 164 miteinander verbunden sein können, mit einer zweiten Siebvorrichtung 170 strömungsmäßig verbunden, wobei Schmutzstoffe vom Sieb festgehalten werden und das Reinigungswasser nach der Siebvorrichtung in den zweiten Reinigungswasser-Speichertank 84 strömt.The Wasserabführöffnungen 34 of the second and the third cleaning zone 10 and 12 are each connected via a return line 160 or 162, which may be connected to a common return line 164 together, with a second screening device 170 fluidly connected, with contaminants are held by the screen and the cleaning water after the sieve device flows into the second cleaning water storage tank 84.

Die Siebvorrichtungen 170 und 174 sind vorzugsweise Rotationssieb-Vorrichtungen, welche einen rotierenden Siebzylinder 176 bzw. 178 aufweisen, in dessen Innenraum das Reinigungswasser der Rücklaufleitung 172 bzw. 164 geleitet wird. Reinigungswasser der Reinigungswasserleitung 108 ist von außen nach innen durch die Siebzylinder 176 bzw. 178 geleitet. In den Siebzylindern 176 bzw. 178 befindet sich vorzugsweise ein Förderelement, vorzugsweise eine Schnecke 180 bzw. 182 zum diskontinuierlichen oder vorzugsweise kontinuierlichen Austragen von Feststoffen aus dem Reinigungswasser, welches sich im Siebzylinder befindet. Der ausgetragene Feststoff ist in Figur 1 mit 184 bzw. 186 bezeichnet und durch einen Pfeil schematisch dargestellt.The sieve devices 170 and 174 are preferably rotary sieve devices which have a rotating screen cylinder 176 and 178, respectively, in whose interior the cleaning water of the return line 172 or 164 is directed. Cleaning water of the cleaning water pipe 108 is guided from outside to inside through the screen cylinders 176 and 178, respectively. In the screen cylinders 176 and 178 is preferably a conveying element, preferably a screw 180 or 182 for discontinuous or preferably continuous discharge of solids from the cleaning water, which is located in the screen cylinder. The discharged solid is in FIG. 1 denoted by 184 and 186 and shown schematically by an arrow.

In dem ersten Spülwasser-Speichertank 44, dem zweiten Reinigungswasser-Speichertank 84 und/oder dem ersten Reinigungswasser-Speichertank 124 befindet sich vorzugsweise jeweils eine Heizquelle 190, beispielsweise ein Wärmetauscher oder ein elektrischer Heizkörper.In the first rinse water storage tank 44, the second cleaning water storage tank 84 and / or the first cleaning water storage tank 124 is preferably in each case a heating source 190, for example, a heat exchanger or an electric heater.

Die bevorzugte Ausführungsform der Erfindung, welche in Figur 1 gezeigt ist, enthält folgende Rezirkulationskreisläufe: Einen ersten Rezirkulationskreislauf, in welchen die Vorlaufleitung 146 und die Vorlaufleitungsabschnitte 146-1, 146-2, ferner die Rücklaufleitung 172, die erste Siebvorrichtung 170, der erste Reinigungswasser-Speichertank 124 und die erste Reinigungswasser-Pumpenanordnung 142 integriert sind. Ferner ist ein zweiter Rezirkulationskreislauf vorgesehen, welcher die Vorlaufleitungen bzw. Vorlaufleitungszweige 94, 98-1, 98-2, 98-3, 98-4, die Rücklaufleitungen 160, 162, 164, die zweite Siebvorrichtung 174, den zweiten Reinigungswasser-Speichertank 84, und die zweite Reinigungswasser-Pumpenanordnung 92 enthält. Ein dritter Rezirkulationskreislauf enthält die Vorlaufleitung 66, die Rücklaufleitung 42, den ersten Spülwasser-Speichertank 44 und die erste Spülwasser-Pumpenanordnung 62. Der in der Transportrichtung 65 des Geschirrs letzte, vierte Rezirkulationskreislauf enthält die Vorlaufleitung 70, wiederum die Rücklaufleitung 42 und wiederum den ersten Spülwasser-Speichertank 44, den Membranfilter 58, den zweiten Spülwasser-Speichertank 56 und die zweite Spülwasser-Pumpenanordnung 72.The preferred embodiment of the invention, which in FIG. 1 1, the following recirculation circuits include: a first recirculation circuit, in which the supply line 146 and the supply line sections 146-1, 146-2, further the return line 172, the first sieve device 170, the first cleaning water storage tank 124 and the first cleaning water pump assembly 142 are integrated. Further, a second recirculation circuit is provided, which the supply lines or feed line branches 94, 98-1, 98-2, 98-3, 98-4, the return lines 160, 162, 164, the second screening device 174, the second cleaning water storage tank 84th , and the second cleaning water pump assembly 92 includes. A third recirculation circuit contains the supply line 66, the return line 42, the first rinse water storage tank 44 and the first rinse water pump assembly 62. The last in the transport direction 65 of the harness fourth, recirculation circuit includes the supply line 70, in turn, the return line 42 and turn the first Rinse water storage tank 44, the membrane filter 58, the second rinse water storage tank 56, and the second rinse water pump assembly 72.

Ein besonderer Vorteil der Erfindung ist, dass an die Wasserbehandlungsstation 4 nicht nur eine Geschirrreinigungsvorrichtung 2 angeschlossen werden kann, sondern dass zwei oder mehrere Geschirrreinigungsvorrichtungen 2 an die einzige Wasserbehandlungsstation 4 angeschlossen werden können. Dies kann über zusätzliche Vorlaufleitungen und Rücklaufleitungen erfolgen, welche an die beschriebenen Speichertanks 124, 84, 44 bzw. 56 und/oder an die beschriebenen Siebvorrichtungen 170 und 174 strömungsmäßig angeschlossen sind, oder über Parallelzweige der beschriebenen Vorlaufleitungen und der beschriebenen Rücklaufleitungen, unter Verwendung der bereits beschriebenen Pumpenanordnungen 72, 62, 92 und 142. Hierzu werden in den Vorlaufleitungen bzw. den Parallelzweigen jeweils lediglich Ventile oder andere Absperrelemente 202, 204, 206, 208, 210, 212, 214, 216, 218 bzw. 220 benötigt. Jede dieser Geschirrreinigungsvorrichtungen 2 bildet zusammen mit der gemeinsamen Wasserbehandlungsstation 4 eine eigene Transportspülmaschine.A particular advantage of the invention is that not only a dishwashing device 2 can be connected to the water treatment station 4, but that two or more dishwashing devices 2 can be connected to the single water treatment station 4. This can be done via additional flow lines and return lines, which are connected to the described storage tanks 124, 84, 44 and 56 and / or to the described screening devices 170 and 174 in terms of flow, or via parallel branches of the described flow lines and the described return lines, using the For this purpose, only valves or other shut-off elements 202, 204, 206, 208, 210, 212, 214, 216, 218 or 220 are required in the flow lines or the parallel branches. Each of these dishwashing devices 2 together with the common water treatment station 4 forms its own conveyor dishwashing machine.

Gemäß einer Ausführungsform der Erfindung mit einer Wasserbehandlungsstation 4 und mehreren daran angeschlossenen Geschirrreinigungsvorrichtungen 2 hat die Wasserbehandlungsstation 4 für jede Geschirrreinigungsvorrichtung 2 eine eigene Pumpe oder Pumpengruppe entsprechend den beschriebenen Pumpenanordnungen 72, 62, 92 und 142. Gemäß einer anderen bevorzugten Ausführungsform der Erfindung sind an die mit Bezug auf Figur 1 beschriebenen Pumpenanordnungen 72, 62, 92 bzw. 142 die betreffenden Vorlaufleitungen von allen Geschirrspülvorrichtungen 2 angeschlossen, sodass jede Pumpenanordnung in der genannten Weise nur eine einzige Reservepumpe benötigt, unabhängig davon, wie viele Geschirrreinigungsvorrichtungen 2 an die gemeinsame Wasserbehandlungsstation 4 angeschlossen sind. Gemäß der bevorzugten Ausführungsform enthält jede Pumpenanordnung mindestens so viele Betriebspumpen 77, 67, 102 bzw. 152, wie Geschirrreinigungsvorrichtungen 2 vorgesehen sind, sodass bei einem Ausfall einer solchen Pumpe nur eine dieser Geschirrreinigungsvorrichtungen 2 betroffen ist und diese betroffene Geschirrreinigungsvorrichtung mit der Reservepumpe 78, 68, 106, 154 der betreffenden Pumpenanordnung weiter betrieben werden kann. Das bedeutet, dass bei Vorhandensein von nur einer Geschirrreinigungsvorrichtung 2 jede Pumpenanordnung mindestens eine Betriebspumpe und eine Reservepumpe enthält; dass bei Vorhandensein von zwei Geschirrreinigungsvorrichtungen 2 jede Pumpenanordnung mindestens zwei Betriebspumpen und eine Reservepumpe enthält; dass bei Verwendung von drei Geschirrreinigungsvorrichtungen 2 jede Pumpenanordnung drei Betriebspumpen und eine Reservepumpe enthält; und so weiter. Dadurch wird die Pumpenkapazität, welche für den Reservefall nötig ist, auf eine einzige Reservepumpe bei jeder Pumpenanordnung reduziert. Es können auch zwei oder mehr Reservepumpen einer Betriebspumpe oder einer Gruppe von Betriebspumpen parallel geschaltet sein und wahlweise zuschaltbar sein.According to an embodiment of the invention with a water treatment station 4 and several dish cleaning devices 2 connected thereto, the Water treatment station 4 for each dishwashing apparatus 2 a separate pump or pump group according to the described pump assemblies 72, 62, 92 and 142. According to another preferred embodiment of the invention to the with reference to FIG. 1 described pump assemblies 72, 62, 92 and 142, the respective flow lines of all dishwashers 2 connected, so that each pump assembly in the manner mentioned requires only a single reserve pump, regardless of how many dishwashing devices 2 are connected to the common water treatment station 4. According to the preferred embodiment, each pumping arrangement includes at least as many operating pumps 77, 67, 102 and 152, respectively, as dishwashing devices 2 are provided, so that in the event of failure of such a pump, only one of these dishwashing devices 2 is affected and this affected dishwashing device with the reserve pump 78, 68 , 106, 154 of the pump assembly in question can continue to operate. This means that in the presence of only one dishwashing device 2, each pumping arrangement contains at least one operating pump and one reserve pump; that in the presence of two dishwashing devices 2, each pumping arrangement contains at least two operating pumps and one reserve pump; that, when using three dishwashing devices 2, each pumping arrangement includes three operating pumps and one standby pump; and so on. Thereby, the pump capacity, which is necessary for the reserve case, reduced to a single reserve pump at each pump assembly. It is also possible for two or more reserve pumps of an operating pump or of a group of operating pumps to be connected in parallel and to be optionally switchable.

Die Erfindung betrifft insbesondere gewerbliche Geschirrspülanlagen.The invention particularly relates to commercial dishwashers.

Die Patentansprüche betreffen Beispiele von bevorzugten Ausführungsformen der Erfindung. Die Erfindung betrifft jedoch auch die Verwendung von jedem einzelnen Merkmal und von Unterkombinationen von Merkmalen, welche in den Patentansprüchen, der Beschreibung und/oder den Zeichnungen offenbart sind.The claims relate to examples of preferred embodiments of the invention. However, the invention also relates to the use of each individual feature and sub-combinations of features disclosed in the claims, the description and / or the drawings.

Die erfinderische Idee, zwischen den Sprühdüsen 23, 31 der letzten Spülzone 16 und den Sprühdüsen 21, 29 der in Geschirrtransportrichtung 65 ersten Spülzone 14 zusätzliche Sprühdüsen 22 und 30 anzuordnen und diesen zusätzlichen Sprühdüsen 22 und 30 mittels eines Membranfilters 58 gefilterte, vorbenutzte Spülflüssigkeit zuzuführen, kann nicht nur für Geschirrspülanlagen verwendet werden, bei welchen eine Wasserbehandlungsstation 4 räumlich getrennt von einer Geschirrreinigungsvorrichtung 2 angeordnet ist, sondern auch für Transportspülmaschinen in Form von Bandtransportspülmaschinen und in Form von Korbtransportspülmaschinen, bei welchen die Geschirrreinigungsvorrichtung und die Wasserbehandlungsstation ohne räumliche Trennung in die Transportspülmaschine integriert sind. Diese erfinderische Idee ist mindestens durch folgende Ausführungsformen realisierbar:The inventive idea of arranging additional spray nozzles 22 and 30 between the spray nozzles 23, 31 of the last rinse zone 16 and the spray nozzles 21, 29 of the first rinse zone 14 in the tray transport direction 65 and supplying these additional spray nozzles 22 and 30 with a pre-used rinse liquid filtered by a membrane filter 58, can be used not only for dishwashers, in which a water treatment station 4 is arranged spatially separated from a dishwashing device 2, but also for conveyor dishwashers in the form of tape dishwashers and in the form of Korbtransportspülmaschinen, in which the dishwashing apparatus and the water treatment station without spatial separation integrated into the conveyor dishwasher are. This inventive idea can be realized at least by the following embodiments:

Ausführungsform 1:Embodiment 1:

Geschirrspülanlage, enthaltend mindestens eine Transportspülmaschine in Form einer Bandtransportspülmaschine oder einer Korbtransportspülmaschine, die Transportspülmaschine enthaltend mindestens eine Reinigungszone 8, 10, 12 mit Sprühdüsen 20, 28 zum Sprühen von Reinigungswasser auf das Geschirr; mindestens eine erste Spülzone 14 mit Sprühdüsen 21, 29 zum Sprühen von Spülwasser auf das Geschirr; eine Klarspülzone 16 als letzte Spülzone mit Sprühdüsen 23, 31 zum Sprühen von Klarspülwasser auf das Geschirr; eine Transportvorrichtung 18 zum Transportieren von Geschirr durch die Zonen 8, 10, 12, 14 und 16; gekennzeichnet durch zusätzliche Sprühdüsen 22, 30, welche in Geschirrtransportrichtung 65 zwischen den Sprühdüsen 21, 29 der ersten Spülzone 14 und den Sprühdüsen 23, 31 der Klarspülzone 16 angeordnet sind zum Sprühen von Spülwasser auf das Geschirr; einen Spülwasser-Speichertank 44 zur Aufnahme des von den Sprühdüsen 23, 31 der Klarspülzone 16 versprühten Klarspülwassers, zur Aufnahme des von den zusätzlichen Sprühdüsen 22, 30 versprühten Spülwassers und zur Aufnahme des von den Sprühdüsen 21, 29 der ersten Spülzone 14 versprühten Spülwassers; einen Spülwasservorlauf-Leitungsstrang 62, 66 mit mindestens einer Pumpe 67, 68 von dem Spülwasser-Speichertank 44 zu den Sprühdüsen 21, 29 der ersten Spülzone 14, um diesen Sprühdüsen 21, 29 Spülwasser aus dem Spülwasser-Speichertank 44 zuzuführen, sodass ein Spülwasserrezirkulationskreislauf von dem Spülwasser-Speichertank 44 zu den Sprühdüsen 21, 29 der ersten Spülzone 14 und dann wieder zurück in den Spülwasser-Speichertank 44 gebildet ist; einen zusätzlichen Spülwasservorlaufweg 58, 56, 72, 70, 76 mit einem Membranfilter 58 zum Reinigen des Spülwassers und mit mindestens einer Pumpe 77, 78 von dem Spülwasser-Speichertank 44 zu den zusätzlichen Sprühdüsen 22, 30, um diesen zusätzlichen Sprühdüsen 22, 30 gereinigtes Wasser aus dem Spülwasser-Speichertank 44 zuzuführen, sodass ein zusätzlicher Spülwasserrezirkulationskreislauf von dem Spülwasser-Speichertank 44 zu den zusätzlichen Sprühdüsen 22, 30 und dann wieder zurück in den Spülwasser-Speichertank 44 gebildet ist.Dishwashing machine, comprising at least one conveyor dishwasher in the form of a belt conveyor dishwasher or a basket conveyor dishwasher, the conveyor dishwasher comprising at least one cleaning zone 8, 10, 12 with spray nozzles 20, 28 for spraying cleaning water onto the dishes; at least a first rinse zone 14 with spray nozzles 21, 29 for spraying rinse water onto the dishes; a final rinse zone 16 as a final rinse zone with spray nozzles 23, 31 for spraying rinse water onto the dishes; a transporting device 18 for transporting dishes through zones 8, 10, 12, 14 and 16; characterized by additional spray nozzles 22, 30 arranged in a tray transporting direction 65 between the spray nozzles 21, 29 of the first rinse zone 14 and the spray nozzles 23, 31 of the rinse zone 16 for spraying rinse water onto the dishes; a rinse water storage tank 44 for receiving the rinse water sprayed from the spray nozzles 23, 31 of the rinse zone 16, for receiving the rinse water sprayed from the additional spray nozzles 22, 30, and for receiving the rinse water sprayed from the spray nozzles 21, 29 of the first rinse zone 14; a rinse water supply line 62, 66 with at least one pump 67, 68 from the rinse water storage tank 44 to the spray nozzles 21, 29 of the first rinse zone 14 to supply these rinse nozzles 21, 29 rinse water from the rinse water storage tank 44, so that a Spülwasserrezirkulationskreislauf of the rinse water storage tank 44 to the spray nozzles 21, 29 of the first rinse zone 14 and then again formed back into the rinse water storage tank 44; an additional Spülwasservorlaufweg 58, 56, 72, 70, 76 with a membrane filter 58 for cleaning the rinse water and with at least one pump 77, 78 of the rinse water storage tank 44 to the additional spray nozzles 22, 30, around these additional spray nozzles 22, 30 purified Supply water from the rinse water storage tank 44 so that an additional Spülwasserrezirkulationskreislauf from the rinse water storage tank 44 to the additional spray nozzles 22, 30 and then back into the rinse water storage tank 44 is formed.

Ausführungsform 2:Embodiment 2:

Geschirrspülanlage nach Ausführungsform 1, dadurch gekennzeichnet, dass im zusätzlichen Spülwasservorlaufweg 58, 56, 72, 70, 76 ein zusätzlicher Spülwasser-Speichertank 56 im Spülwasserströmungsweg zwischen dem Membranfilter 58 und der Pumpe 77, 78 angeordnet ist.Dishwashing system according to embodiment 1, characterized in that in the additional Spülwasservorlaufweg 58, 56, 72, 70, 76, an additional rinse water storage tank 56 in the Spülwasserströmungsweg between the membrane filter 58 and the pump 77, 78 is arranged.

Ausführungsform 3:Embodiment 3:

Geschirrspülanlage nach Ausführungsform 2, dadurch gekennzeichnet, dass der zusätzliche Spülwasser-Speichertank 56 einen Überlauf 60 aufweist, über welchen Spülwasser in den Spülwasser-Speichertank 44 zurückfließen kann.Dishwashing system according to embodiment 2, characterized in that the additional rinse water storage tank 56 has an overflow 60, via which rinse water can flow back into the rinse water storage tank 44.

Ausführungsform 4:Embodiment 4:

Geschirrspülanlage nach mindestens einer der vorhergehenden Ausführungsformen, dadurch gekennzeichnet, dass im zusätzlichen Spülwasservorlaufweg 58, 56, 72, 70, 76 stromabwärts von der Pumpe 77, 78 eine Heizeinrichtung 76 zur Erwärmung des Spülwassers angeordnet ist.Dishwasher according to at least one of the preceding embodiments, characterized in that in the additional Spülwasservorlaufweg 58, 56, 72, 70, 76 downstream of the pump 77, 78, a heater 76 is arranged to heat the rinse water.

Ausführungsform 5:Embodiment 5:

Geschirrspülanlage nach mindestens einer der vorhergehenden Ausführungsformen, dadurch gekennzeichnet, dass mindestens ein Reinigungswasser-Speichertank 84, 124 zur Aufnahme des von den Sprühdüsen 20, 28 von mindestens einer der Reinigungszonen 8, 10, 12 versprühten Reinigungswassers vorgesehen ist; dass mindestens ein Reinigungswasservorlauf-Leitungsstrang 92, 94 und 142, 146 mit mindestens einer Pumpe 102, 104, 106 und 152, 154 von dem mindestens einen Reinigungswasser-Speichertank 84, 124 zu den Sprühdüsen 20, 28 der mindestens einen Reinigungszone 8, 10, 12 vorgesehen ist, um diesen Sprühdüsen 20, 28 Reinigungswasser aus dem Reinigungswasser-Speichertank 84, 124 zuzuführen, sodass mindestens ein Reinigungswasser-Rezirkulationskreislauf von dem Reinigungswasser-Speichertank 84, 124 zu den Sprühdüsen 20, 28 der betreffenden Reinigungszone 8, 10, 12 und wieder zurück zu dem Reinigungswasser-Speichertank 84, 124 gebildet ist.Dishwashing plant according to at least one of the preceding embodiments, characterized in that at least one cleaning water storage tank 84, 124 is provided for receiving the cleaning water sprayed from the spray nozzles 20, 28 from at least one of the cleaning zones 8, 10, 12; in that at least one cleaning water supply line 92, 94 and 142, 146 with at least one pump 102, 104, 106 and 152, 154 from the at least one cleaning water storage tank 84, 124 to the spray nozzles 20, 28 of the at least a cleaning zone 8, 10, 12 is provided to these cleaning nozzles 20, 28 supply cleaning water from the cleaning water storage tank 84, 124, so that at least one cleaning water Rezirkulationskreislauf from the cleaning water storage tank 84, 124 to the spray nozzles 20, 28 of the respective cleaning zone 8, 10, 12 and back to the cleaning water storage tank 84, 124 is formed.

Ausführungsform 6:Embodiment 6:

Geschirrspülanlage nach Ausführungsform 5, dadurch gekennzeichnet, dass der Spülwasser-Speichertank 44 und der mindestens eine Reinigungswasser-Speichertank 84, 124 jeweils mit einem Wasserüberlauf 80, 120 versehen sind, durch welchen Wasser entgegen der Geschirrtransportrichtung 65 von Speichertank zu Speichertank fließen kann, ausgehend von dem Spülwasser-Speichertank 44 zu dem in Geschirrtransportrichtung 65 letzten Reinigungswasser-Speichertank 120.Dishwashing system according to embodiment 5, characterized in that the rinse water storage tank 44 and the at least one cleaning water storage tank 84, 124 are each provided with a water overflow 80, 120, through which water against the Geschirrtransportrichtung 65 can flow from storage tank to storage tank, starting from the rinse water storage tank 44 to the last in the crockery transport direction 65 cleaning water storage tank 120th

Claims (6)

  1. Dishwashing installation, comprising at least one conveyor dishwasher in the form of a belt-conveyor dishwasher or a rack-conveyor dishwasher, the conveyor dishwasher comprising at least one wash zone (8, 10, 12) with spray nozzles (20, 28) for spraying wash water onto the dishes; a first rinse zone (14) with spray nozzles (21, 29) for spraying rinse water onto the dishes; a final rinse zone (16), as the last rinse zone, with spray nozzles (23, 31) for spraying final rinse water onto the dishes; a conveyor apparatus (18) for conveying dishes through the zones (8, 10, 12, 14, 16); additional spray nozzles (22, 30), which are arranged between the spray nozzles (21, 29) of the first rinse zone (14) and the spray nozzles (23, 31) of the final rinse zone (16) in the dish-conveying direction (65), for spraying rinse water onto the dishes; a rinse-water storage tank (44) for receiving the final rinse water sprayed by the spray nozzles (23, 31) of the final rinse zone (16), for receiving the rinse water sprayed by the additional spray nozzles (22, 30) and for receiving the rinse water sprayed by the spray nozzles (21, 29) of the first rinse zone (14),
    characterized by
    a rinse-water feed line section (62, 66) having at least one pump (67, 68) from the rinse-water storage tank (44) to the spray nozzles (21, 29) of the first rinse zone (14) in order to supply these spray nozzles (21, 29) with rinse water from the rinse-water storage tank (44), so that a rinse-water recirculation circuit is formed from the rinse-water storage tank (44) to the spray nozzles (21, 29) of the first rinse zone (14) and then back to the rinse-water storage tank (44) again; an additional rinse-water feed path (58, 56, 72, 70, 76) having a diaphragm filter (58) for purifying the rinse water and having at least one pump (77, 78) from the rinse-water storage tank (44) to the additional spray nozzles (22, 30) in order to supply these additional spray nozzles (22, 30) with purified water from the rinse-water storage tank (44), so that an additional rinse-water recirculation circuit is formed from the rinse-water storage tank (44) to the additional spray nozzles (22, 30) and then back to the rinse-water storage tank (44) again.
  2. Dishwashing installation according to Claim 1,
    characterized
    in that an additional rinse-water storage tank (56) is arranged in the additional rinse-water feed path (58, 56, 72, 70, 76) in the rinse-water flow path between the diaphragm filter (58) and the pump (77, 78).
  3. Dishwashing installation according to Claim 2,
    characterized
    in that the additional rinse-water storage tank (56) has an overflow (60) via which rinse water can flow back into the rinse-water storage tank (44).
  4. Dishwashing installation according to at least one of the preceding claims,
    characterized
    in that a heating device (76) for heating the rinse water is provided downstream of the pump (77, 78) in the additional rinse-water feed path (58, 56, 72, 70, 76).
  5. Dishwashing installation according to at least one of the preceding claims,
    characterized
    in that at least one wash-water storage tank (84, 124) for receiving the wash water sprayed by the spray nozzles (20, 28) of at least one of the wash zones (8, 10, 12) is provided; in that at least one wash-water feed line section (92, 94; 142, 146) having at least one pump (102, 104, 106; 152, 154) from the at least one wash-water storage tank (84, 124) to the spray nozzles (20, 28) of the at least one wash zone (8, 10, 12) is provided in order to supply these spray nozzles (20, 28) with wash water from the wash-water storage tank (84, 124), so that at least one wash-water recirculation circuit is formed from the wash-water storage tank (84, 124) to the spray nozzles (20, 28) of the wash zone (8, 10, 12) in question and back to the wash-water storage tank (84, 124) again.
  6. Dishwashing installation according to Claim 5,
    characterized
    in that the rinse-water storage tank (44) and the at least one wash-water storage tank (84, 124) are each provided with a water overflow (80, 120) through which water can flow against the dish-conveying direction (65) from storage tank to storage tank, starting form the rinse-water storage tank (44) and to the wash-water storage tank (120) which is last in the dish-conveying direction (65).
EP05019186A 2004-09-18 2005-09-03 Dishwashing installation Expired - Fee Related EP1637059B1 (en)

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US20060060230A1 (en) 2006-03-23
DE502005007831D1 (en) 2009-09-17
EP1637059A2 (en) 2006-03-22
EP1637058A2 (en) 2006-03-22
EP1637058B1 (en) 2014-11-19
DE102004045445A1 (en) 2006-03-23
US7481231B2 (en) 2009-01-27
EP1637059A3 (en) 2008-07-23
EP1637058A3 (en) 2009-11-25
US20060060231A1 (en) 2006-03-23

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