EP1815779B1 - Conveyor dishwasher - Google Patents
Conveyor dishwasher Download PDFInfo
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- 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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- Prior art keywords
- rinse
- liquid
- zone
- nozzles
- tank
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- 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.)
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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
- A47L15/241—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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Description
Die Erfindung betrifft eine Transportgeschirrspülmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a transport dishwasher according to the preamble of
Eine Transportgeschirrspülmaschine (conveyor warewasher) dieser Art ist aus der
Transportgeschirrspülmaschinen (conveyor warewashers) können Korbtransportspülmaschinen (rack conveyor warewashers) oder Bandtransportspülmaschinen (flight-type warewashers) sein. Der Frischwasserverbrauch von Transportgeschirrspülmaschinen ist insbesondere davon abhängig, wie viel Frischwasser (fresh water) für die erste Füllung der Transportgeschirrspülmaschine benötigt wird und wie groß der Verbrauch an Frischwasser für die Klarspülung (final rinse) während des Betriebes der Transportgeschirrspülmaschine ist. Die für die Klarspülung (final rinse) verwendete Klarspülflüssigkeit (final rinse liquid) muss in mikrobiologischer Hinsicht die Qualität von Trinkwasser haben. Deshalb wird das Wasser für die Klarspülung in einer Transportgeschirrspülmaschine normalerweise vollständig oder mindestens teilweise dem öffentlichen Frischwasserversorgungsnetz entnommen. Für einen wirtschaftlichen und umweltschonenden Betrieb einer Transportgeschirrspülmaschine ist ferner ein möglichst geringer Verbrauch von Reiniger (detergent) und Klarspüler (rinse aid) von Bedeutung.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. For a cost-effective and environmentally friendly operation of a transport dishwasher also the lowest possible consumption of detergent (rinse aid) and rinse aid (rinse aid) is of importance.
Dem Frischwasser wird in den Waschzonen der Transportgeschirrspülmaschine Reiniger beigefügt. Durch den Reiniger wird das Wasser alkalisch. Die Alkalität und Speiserückstände müssen in den Vorspülzonen (pre-rinse zones) und spätestens in der Klarspülzone (final rinse zone) vollständig vom Spülgut (wash ware) entfernt werden, damit keine sichtbaren Rückstände (visible residue) auf dem Spülgut zurück bleiben. Insbesondere beim Reinigen von Gläsern sind die Rückstände störend sichtbar. Eine vollständige Reinigung von Spülgut (wash ware) spätestens in der Klarspülzone (final rinse zone) ist insbesondere bei Korbtransportspülmaschinen (rack conveyor warewashers) ein Problem, weil das in den Körben befindliche Spülgut teilweise von den Körben von den Sprühstrahlen der Düsen abgeschirmt wird. Ein weiteres Problem besteht darin, dass Reiniger (detergent) enthaltende Waschflüssigkeit von dem Spülgut von Zone zu Zone in der Transportgeschirrspülmaschine verschleppt wird.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.
Durch die Erfindung soll die Aufgabe gelöst werden, durch eine neue Transportgeschirrspülmaschine eine effektive Reinigung des Spülgutes zu erzielen.The invention enables the problem to be solved to achieve effective cleaning of the items to be washed by a new transport dishwasher.
Diese Aufgabe wird gemäß Erfindung durch die Merkmale von Anspruch 1 gelöst.This object is achieved according to the invention by the features of
Die genannte Aufgabe wird gemäß der Erfindung gelöst durch eine Transportgeschirrspülmaschine enthaltend in der angegebenen Reihenfolge jeweils mindestens eine Waschzone mit Waschdüsen, eine erste Vorspülzone mit ersten Vorspüldüsen, eine zweite Vorspülzone mit zweiten Vorspüldüsen, und eine Klarspülzone mit Klarspüldüsen; eine Transportvorrichtung zum Transportieren von Spülgut durch die genannten Zonen in Spülguttransportrichtung von der mindestens einen Waschzone zu der mindestens einen Klarspülzone; einen Waschtank, in welchen Waschflüssigkeit, welche von den Waschdüsen der in Spülguttransportrichtung letzten Waschzone versprüht wird, und in den erste Vorspülflüssigkeit, welche von den ersten Vorspüldüsen der ersten Vorspülzone versprüht wird, abfließt; einen ersten Vorspültank, in welchen zweite Vorspülflüssigkeit abfließt, welche von den zweiten Vorspüldüsen in der zweiten Vorspülzone versprüht wird; Flüssigkeitszufuhrvorrichtungen zur Zufuhr von Vorspülflüssigkeit aus dem ersten Vorspültank als zweite Vorspülflüssigkeit zu den zweiten Vorspüldüsen und als erste Vorspülflüssigkeit zu den ersten Vorspüldüsen; dadurch gekennzeichnet, dass die Flüssigkeitszufuhrvorrichtungen zur getrennten Zufuhr von Vorspülflüssigkeit aus dem ersten Vorspültank einerseits als zweite Vorspülflüssigkeit zu den zweiten Vorspüldüsen der zweiten Vorspülzone und andererseits als erste Vorspülflüssigkeit zu den ersten Vorspüldüsen der ersten Vorspülzone ausgebildet sind.Said object is achieved according to the invention by a transport dishwasher comprising in the order given in each case at least one washing zone with washing nozzles, a first Vorspülzone with first Vorspüldüsen, a second Vorspülzone with second Vorspüldüsen, 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-rinse liquid to the second pre-rinse nozzles and as first pre-rinse liquid to the first pre-rinse nozzles; characterized in that the liquid supply devices for the separate supply of pre-rinsing liquid from the first pre-rinse tank on the one hand as a second pre-rinse liquid to the second pre-rinse nozzles of the second pre-rinse and on the other hand as a first pre-rinse liquid to the first pre-rinse nozzles of the first pre-rinse zone are formed.
Durch die Erfindung wird eine effektive Reinigung bei geringem Frischwasserbedarf erreicht.The invention achieves effective cleaning with low fresh water requirement.
Die Verwendung einer ersten Vorspülzone, aus welcher versprühte erste Vorspülflüssigkeit nicht in eine Vorspülzone, sondern in die letzte Waschzone abfließt, hat den Vorteil, dass die Alkalität, Speiserückstände und gegebenenfalls auch vorhandener Salzgehalt, welche nach der letzten Waschzone am Waschgut haften, in den Waschtank der letzten Waschzone zurück gefördert werden und dadurch nicht in größeren Mengen in die zweite Vorwaschzone gelangen.The use of a 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.
Weitere Merkmale der Erfindung sind in den entsprechenden Unteransprüchen enthalten.Further features of the invention are contained in the corresponding subclaims.
Die Erfindung wird im Folgenden mit Bezug auf die beiliegenden Zeichnungen anhand von bevorzugten Ausführungsformen als Beispiele beschrieben. In den Zeichnungen zeigen
- Fig. 1
- einen Ausschnitt einer Transportgeschirrspülmaschine (conveyor warewasher) gemäß der Erfindung im vertikalen Längsschnitt gesehen.
- Fig. 2
- einen weiteren Ausschnitt einer Ausführungsform einer Transportgeschirrspülmaschine (conveyor warewasher) nach der Erfindung im vertikalen Längsschnitt gesehen.
- Fig. 1
- a section of a transport dishwasher (conveyor warewasher) according to the invention seen in vertical longitudinal section.
- Fig. 2
- a further section of an embodiment of a transport dishwasher (conveyor warewasher) according to the invention seen in vertical longitudinal section.
Die in den
Falls mehrere Waschzonen in Spülguttransportrichtung 24 nacheinander angeordnet sind, ist die in den
Ein erster Vorspültank 2.2 ist unter der zweiten Vorspülzone 2 derart angeordnet, dass die von den zweiten Vorspüldüsen 2.1 dieser zweiten Vorspülzone 2 versprühte zweite Vorspülflüssigkeit in den ersten Vorspültank 2.1 abfließt. In dem ersten Vorspültank 2.2 befindet sich somit zweite Vorspülflüssigkeit 2.3.A first pre-rinsing tank 2.2 is arranged under the second
Eine erste Flüssigkeitszufuhrvorrichtung 1.3 von
Die erste Flüssigkeitszufuhrvorrichtung 1.3 von
Bei der Ausführungsform von
Bei der Ausführungsform nach
Die Filtrationseinrichtung 1.6 von
Der wesentliche Unterschied zwischen einer Mikrofiltration und einer Ultrafiltration liegt in den verschiedenen Porengrößen und unterschiedlichen Strukturen der Mikrofiltrationselemente und der Ultrafiltrationselemente, welche vorzugsweise Membranen sind. Wenn sie eine Porengröße von kleiner als 0,1 µm haben, wird die Filtration als Ultrafiltration bezeichnet, wohingegen eine Filtration bei einer Porengröße von größer als 0,1 µm bis 100 µm als Mikrofiltration bezeichnet wird.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 μm, the filtration is referred to as ultrafiltration, whereas filtration with a pore size of greater than 0.1 μm to 100 μm is referred to as microfiltration.
Da die erste Flüssigkeitszufuhrvorrichtung 1.3 von
Die nachfolgende Beschreibung bezieht sich wieder auf Merkmale, welche bei beiden Ausführungsformen nach den
Ein zweiter Vorspültank 3.2 ist unter den dritten Vorspüldüsen 3.1 der dritten Vorspülzone 3 und unter den Klarspüldüsen 4.1 der Klarspülzone 4 derart angeordnet, dass von den dritten Vorspüldüsen 3.1 versprühte dritte Vorspülflüssigkeit 3.3 und von den Klarspüldüsen 4.1 auf das Spülgut 20 gesprühte Klarspülflüssigkeit in den zweiten Vorspültank 3.2 abfließen. Die in den zweiten Vorspültank 3.2 gesammelte Mischung aus versprühter Klarspülflüssigkeit und versprühter dritter Vorspülflüssigkeit 3.3 wird als dritte Vorspülflüssigkeit durch eine dritte Vorspülpumpenleitung 3.4 mittels einer Pumpe 3.5 vom zweiten Vorspültank 3.2 zu den dritten Vorspüldüsen 3.1 der dritten Vorspülzone 3 gefördert.A second pre-rinsing tank 3.2 is arranged under the third pre-rinsing nozzles 3.1 of the
Klarspülflüssigkeit wird den Klarspüldüsen 4.1 der Klarspülzone 4 durch eine Klarspülflüssigkeitszuleitung 4.2 zugeführt, welche einen Wassererwärmer 4.3 (water heater) enthalten kann. Die Klarspülflüssigkeit ist Wasser, welches in mikrobiologischer Hinsicht Trinkwasserqualität besitzt, vorzugsweise Trinkwasser aus einem Trinkwasserversorgungsnetz. Es kann jedoch auch aufbereitetes Wasser sein wie z. B. enthärtetes, teilentsalztes oder vollentsalztes (entmineralisiertes) Wasser.Final rinse liquid is supplied to the final rinse nozzles 4.1 of the final rinse
Durch das Sprühen von dritter Vorspülflüssigkeit 3.3 aus dem zweiten Vorspültank 3.2 durch die dritten Vorspüldüsen 3.1 der dritten Vorspülzone 3 kann die zum Klarspülen des Spülgutes 20 an den Klarspüldüsen 4.1 der Klarspülzone 4 erforderliche Volumenmenge pro Stunde an Klarspülflüssigkeit reduziert werden, die erforderlich ist, um das Spülgut 20 vollständig zu reinigen. Dieser Vorteil ist auch dann gegeben, wenn die zweite Vorspülflüssigkeit 2.3 aus dem ersten Vorspültank 2.2 durch eine einzige Pumpenleitung sowohl den ersten Vorspüldüsen der 1.1 der ersten Vorspülzone 1 als auch den zweiten Vorspüldüsen 2.1 der zweiten Vorspülzone 2 zugeführt wird, anstatt über die voneinander getrennten Flüssigkeitszufuhrvorrichtungen 1.3 und 2.4 von
Gemäß einer bevorzugten Ausführungsform der Erfindung ist auch eine Klarspüler-Zudosiervorrichtung 30 zur Zufuhr von Klarspüler 32 aus einem Klarspülerbehälter 34 in die dritte Vorspülflüssigkeit 3.3 in den zweiten Vorspültank 3.2 vorgesehen. Das Zudosieren der Klarspülflüssigkeit kann durch Schwerkraft oder gemäß der Ausführungsformen nach
Den Waschdüsen 16 der letzten der mindestens einen Waschzone 14 wird Waschflüssigkeit aus dem Waschtank 26 durch eine Waschflüssigkeits-Pumpenleitung 46 zugeführt, welche eine Pumpe 48 enthält.The washing nozzles 16 of the last of the at least one
Der Waschtank 26 und/oder der erste Vorspültank 2.2 und/oder der zweite Vorspültank 3.2 enthalten vorzugsweise jeweils ein Ablaufventil 50 bzw. 52 bzw. 54, durch welches der betreffende Tank entleert werden kann.The
Vor der letzten Waschzone 14 können entgegen der Spülguttransportrichtung 24 eine oder mehrere weitere Waschzonen angeordnet sein, welche in ähnlicher Weise ausgebildet sein können und vorzugsweise jeweils auch mit einem Waschtank versehen sind.Before the
Die benötigten Flüssigkeitsmengen sind von der Größe der Transportgeschirrspülmaschine, der Art des zu reinigenden Spülgutes, der Art der Verunreinigungen des Spülgutes und von weiteren Faktoren abhängig.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.
Die pro Zeiteinheit versprühte Flüssigkeitsmenge ist vorzugsweise in der ersten Vorspülzone 1 kleiner als in der Klarspülzone 4; in der zweiten Vorspülzone 2 größer als in der ersten Vorspülzone 1, und auch größer als in der Klarspülzone 4, sowie größer oder kleiner oder gleich als/wie in der dritten Vorspülzone 3; in der dritten Vorspülzone 3 größer als in der ersten Vorspülzone 1 und auch größer als in der Klarspülzone 4.The amount of liquid sprayed per unit time is preferably smaller in the
In den
Anstelle des Ausdruckes "Vorspül..." (pre-rinse...) wird in der Praxis manchmal der Ausdruck "Nachwasch..." (post-wash...) verwendet.Instead of the term "pre-rinse ..." (pre-rinse ...) is sometimes used in practice the term "post-wash ..." (post-wash ...).
Einige oder alle der Tanks und der Pumpen können benachbart zu den Zonen oder in einem anderen Gebäuderaum oder in einer anderen Gebäudeetage als die Zonen angeordnet sein.Some or all of the tanks and pumps may be located adjacent to the zones or in another building room or building floor other than the zones.
Claims (11)
- Conveyor warewasher containing, in the given order, in each case at least one wash zone (14) with wash nozzles (16), a first pre-rinse zone (1) with first pre-rinse nozzles (1.1), a second pre-rinse zone (2) with second pre-rinse nozzles (2.1), and a final-rinse zone (4) with final-rinse nozzles (4.1); a conveyor (18) for conveying wash ware (20) through the abovementioned zones in the wash-ware-conveying direction (24) from the at least one wash zone (14) to the at least one final-rinse zone (4); a wash tank (26), into which flows out wash liquid sprayed by the wash nozzles (16) of the final wash zone (14), as seen in the wash-ware-conveying direction (24), and first pre-rinse liquid sprayed by the first pre-rinse nozzles (1.1) of the first pre-rinse zone (1); a first pre-rinse tank (2.2), into which flows out second pre-rinse liquid sprayed by the second pre-rinse nozzles (2.1) in the second pre-rinse zone (2); liquid-feed devices (1.3, 2.4; 1.4, 2.4) for feeding pre-rinse liquid from the first pre-rinse tank (2.2) as second pre-rinse liquid to the second pre-rinse nozzles (2.1) and as first pre-rinse liquid to the first pre-rinse nozzles (1.1); characterized in that the liquid-feed devices (1.3, 2.4; 1.4, 2.4) are designed for the separate feed of pre-rinse liquid from the first pre-rinse tank (2.2), on the one hand, as second pre-rinse liquid to the second pre-rinse nozzles (2.1) of the second pre-rinse zone (2) and, on the other hand, as first pre-rinse liquid to the first pre-rinse nozzles (1.1) of the first pre-rinse zone (1).
- Conveyor warewasher according to Claim 1, characterized by a third pre-rinse zone (3) with third pre-rinse nozzles (3.1), which is arranged between the second pre-rinse zone (2) and the final-rinse zone (4); a second pre-rinse tank (3.2), which is arranged such that final-rinse liquid sprayed by the final-rinse nozzles (4.1) of the final-rinse zone (4) and third pre-rinse liquid sprayed by the third pre-rinse nozzles (3.1) of the third pre-rinse zone (3) flow out into the second pre-rinse tank (3.2); a pump line (3.4) for feeding third pre-rinse liquid from the second pre-rinse tank (3.2) to the third pre-rinse nozzles (3.1) of the third pre-rinse zone (3).
- Conveyor warewasher according to Claim 1 or 2, characterized in that the liquid-feed devices have a pump line (2.4) for feeding second pre-rinse liquid from the first pre-rinse tank (2.2) to the second pre-rinse nozzles (2.1) of the second pre-rinse zone (2).
- Conveyor warewasher according to one of Claims 1 to 3, characterized in that the liquid-feed devices have a pump line (6) from the first pre-rinse tank (2.2) to the first pre-rinse nozzles (1.1) of the first pre-rinse zone (1), for the purpose of feeding pre-rinse liquid from the first pre-rinse tank (2.2) as first pre-rinse liquid to the first pre-rinse nozzles (1.1) of the first pre-rinse zone (1).
- Conveyor warewasher according to one of Claims 1 to 3, characterized in that the liquid-feed devices have a filtration arrangement (1.6) in the form of a microfiltration arrangement or in the form of an ultrafiltration arrangement, which has a primary side for receiving second pre-rinse liquid from the first pre-rinse tank (2.2) and a secondary side for discharging a microfiltered or ultrafiltered fraction of the second pre-rinse liquid as first pre-rinse liquid, and in that the liquid-feed devices have a pump line (6) for feeding first pre-rinse liquid from the secondary side of the filtration arrangement (1.6) to the first pre-rinse nozzles (1.1) of the first pre-rinse zone (1), in order to feed the filtered fraction of the second pre-rinse liquid as first pre-rinse liquid to the first pre-rinse nozzles (1.1).
- Conveyor warewasher according to Claim 5, characterized in that the filtration arrangement has at least one filtration element (1.9) in the form of a microfiltration element or in the form of an ultrafiltration element, which separates a primary chamber (1.7) on the primary side and a secondary chamber (1.9) on the secondary side from one another, and in that the primary chamber (1.7) has an inlet (1.10) and outlet (1.11) for directing second pre-rinse liquid from the first pre-rinse tank (2.2) through the primary chamber (1.7).
- Conveyor warewasher according to Claim 5 or 6, characterized in that the filtration arrangement is a membrane filtration arrangement.
- Conveyor warewasher according to one of at least one of the preceding claims, characterized by a rinse-aid metering device (30) for the metered feed of rinse aid into the pre-rinse liquid which is to be sprayed in the third pre-rinse zone (3).
- Conveyor warewasher according to at least one of the preceding claims, characterized by a rinse-aid metering device (30) for the metered feed of rinse aid into the pre-rinse liquid which is to be sprayed in the second pre-rinse zone (2).
- Conveyor warewasher according to at least one of the preceding claims, characterized by a liquid-transfer path (61) from the second pre-rinse tank (3.2) into the first pre-rinse tank (2.2).
- Conveyor warewasher according to at least one of the preceding claims, characterized by a liquid-transfer path (62) from the first pre-rinse tank (2.2) into the wash tank (26) of the final wash zone of the at least one wash zone (14).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610005074 DE102006005074A1 (en) | 2006-02-03 | 2006-02-03 | Conveyor dishwasher |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1815779A2 EP1815779A2 (en) | 2007-08-08 |
EP1815779A3 EP1815779A3 (en) | 2008-04-30 |
EP1815779B1 true EP1815779B1 (en) | 2010-09-01 |
Family
ID=38038642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060122637 Expired - Fee Related EP1815779B1 (en) | 2006-02-03 | 2006-10-20 | Conveyor dishwasher |
Country Status (2)
Country | Link |
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EP (1) | EP1815779B1 (en) |
DE (2) | DE102006005074A1 (en) |
Cited By (1)
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 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2884690B1 (en) | 2005-04-22 | 2007-06-29 | Premark Feg Llc | OVEN PROFESSIONAL LARGE KITCHEN WITH LIGHTING PERFECTION |
DE102005038433A1 (en) * | 2005-08-12 | 2007-02-15 | Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington | Transport dishwasher |
DE102009024569A1 (en) * | 2009-06-08 | 2011-04-07 | Premark Feg L.L.C., Wilmington | Transport dishwasher for rinsing items to be washed and method for operating such a conveyor dishwasher |
DE102010011471A1 (en) | 2010-03-15 | 2011-09-15 | Meiko Maschinenbau Gmbh & Co. Kg | Continuous dishwasher with improved rinse |
DE202010017517U1 (en) | 2010-03-15 | 2012-02-09 | Meiko Maschinenbau Gmbh & Co. Kg | Continuous dishwasher with improved rinse |
ITMI20111323A1 (en) | 2011-07-15 | 2013-01-16 | Comenda Ali S P A | PERFORMED RINSE STATION FOR TUNNEL DISHWASHER MACHINES, AND COMMAND METHOD OF THIS RINSING STATION |
ITMI20111324A1 (en) | 2011-07-15 | 2013-01-16 | Comenda Ali S P A | MULTISTAGE RINSING MODULE PERFECTED FOR TUNNEL DISHWASHER MACHINES AND TUNNEL DISHWASHER MACHINE EQUIPPED WITH THIS MODULE |
ITMI20131930A1 (en) * | 2013-11-20 | 2015-05-21 | Ali Spa | MULTISTAGE RINSING MODULE PERFECTED FOR TUNNEL DISHWASHER MACHINES AND TUNNEL DISHWASHER MACHINE EQUIPPED WITH THIS MODULE |
DE102014114719A1 (en) * | 2014-10-10 | 2016-04-14 | Winterhalter Gastronom Gmbh | Conveyor dishwasher |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4319930A (en) * | 1980-03-28 | 1982-03-16 | Daiwa Can Company, Limited | Method for multi-stage washing |
DE59200719D1 (en) * | 1991-06-13 | 1994-12-08 | Miele & Cie | Process for reusing rinsing or cleaning liquid in program-controlled dishwashers or washing machines. |
DE9403650U1 (en) * | 1994-03-04 | 1995-08-10 | AEG Hausgeräte GmbH, 90429 Nürnberg | Household dishwasher with water treatment device |
DE19644438C2 (en) * | 1996-10-25 | 1998-11-12 | Premark Feg L L C N D Ges D St | Continuous dishwashing device and method for cleaning crockery and / or tablet parts |
DE19836739A1 (en) * | 1998-08-13 | 2000-02-17 | Meiko Maschinenbau Gmbh & Co | dishwasher |
DE202005013348U1 (en) * | 2004-09-18 | 2005-11-03 | Premark Feg L.L.C., Wilmington | A commercial conveyor dish washing machine has a water recirculation system in which the sprayed cleaning water is returned and heated for reuse |
-
2006
- 2006-02-03 DE DE200610005074 patent/DE102006005074A1/en not_active Withdrawn
- 2006-10-20 DE DE200650007770 patent/DE502006007770D1/en active Active
- 2006-10-20 EP EP20060122637 patent/EP1815779B1/en not_active Expired - Fee Related
Cited By (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
DE502006007770D1 (en) | 2010-10-14 |
EP1815779A2 (en) | 2007-08-08 |
DE102006005074A1 (en) | 2007-08-09 |
EP1815779A3 (en) | 2008-04-30 |
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