EP3815595B1 - Transport dishwasher - Google Patents

Transport dishwasher Download PDF

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Publication number
EP3815595B1
EP3815595B1 EP20205220.5A EP20205220A EP3815595B1 EP 3815595 B1 EP3815595 B1 EP 3815595B1 EP 20205220 A EP20205220 A EP 20205220A EP 3815595 B1 EP3815595 B1 EP 3815595B1
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EP
European Patent Office
Prior art keywords
filter element
transport direction
spray arm
transport
arm manifold
Prior art date
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Active
Application number
EP20205220.5A
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German (de)
French (fr)
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EP3815595A1 (en
Inventor
Michael Thurn
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.)
Winterhalter Gastronom GmbH
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Winterhalter Gastronom GmbH
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Publication date
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Publication of EP3815595A1 publication Critical patent/EP3815595A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/241—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors the dishes moving in a horizontal plane
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4202—Water filter means or strainers
    • A47L15/4206—Tubular filters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation

Definitions

  • the present invention relates to a conveyor dishwasher which is used in particular in the commercial sector, such conveyor dishwashers usually comprising one or more washing zones through which items to be washed are transported and treated, preferably by means of a conveyor belt.
  • Such transport dishwashers are known in many forms, for example from WO 2015/171490 A1 or from the U.S. 4,657,188 A .
  • Another transport dishwasher is also from WO 2008/100741 A1 which discloses a tank for receiving washing liquid, a plurality of washing arms for dispensing washing liquid and a washing manifold for supplying the washing arms, essentially as described in the preamble of claim 1.
  • claims 2 to 13 relate to particularly advantageous embodiments of the conveyor dishwasher according to the invention.
  • the invention also relates to a filter element or a flushing distributor with such a filter element according to claim 14 for use in a transport dishwasher according to one of claims 1 to 13.
  • Claim 15 relates to a particularly advantageous embodiment of the filter element or flushing distributor with such a filter element.
  • the conveyor dishwasher according to the invention comprises at least one wash zone, preferably also several wash zones, for example a main wash zone and optionally an upstream pre-wash zone and/or a downstream final-wash zone, but also others Rinsing zones and/or other treatment zones, such as drying zones, can be provided.
  • the conveyor dishwasher according to the invention is designed in such a way that dishes or items to be cleaned or other objects to be cleaned can be moved in a transport direction A through the at least one washing zone.
  • a conveyor dishwasher comprises a conveyor belt that transports the items to be cleaned or the dishes in the transport direction A through the one or more washing zones and/or treatment zones, with the items to be washed either being placed directly on the conveyor belt or associated holder elements or else the items to be washed can be placed in appropriate containers or baskets, which can then be transported through the one or through the multiple washing zones and/or treatment zones of the dishwasher by means of the conveyor belt or another transport device.
  • the conveyor dishwasher according to the invention also includes a tank for holding a washing liquid.
  • rinsing liquid as used in this application, is to be understood in a broader scope, whereby the rinsing liquid can be water, for example, without specific additives being mixed in, for example for a rinsing zone, but also other liquids and solutions such as water to which a detergent is added.
  • the conveyor dishwasher comprises a plurality of washing arms, each with at least one dispensing element, preferably with a plurality of dispensing elements, in particular spray nozzles for example, for dispensing washing liquid into the at least one washing zone.
  • the rinsing arms in the rinsing zone are arranged one behind the other transversely to the transport direction A and in the transport direction.
  • the conveyor dishwasher comprises a rinsing distributor for supplying the several rinsing arms with a rinsing liquid.
  • the flushing manifold is connected to the tank via a supply line, and the flushing manifold includes a plurality of connection ports, with each of the plurality of flushing arms being connected to one of the connection ports.
  • rinsing liquid can be pumped from the tank via the supply line into the rinsing distributor and from the rinsing distributor through the connection openings into the plurality of rinsing arms.
  • a conveyor dishwasher comprises according to the invention one or more pumps, which can be arranged at various points within the conveyor dishwasher, preferably in a tank or in the vicinity of a tank.
  • the feed line is connected to an inlet opening of the flushing distributor, with the inlet opening being arranged in an area which, in transport direction A, is behind a last or rearmost connection opening of the flushing distributor in transport direction A, and thus preferably in a rear area in transport direction A of the flushing distributor is arranged.
  • a rinsing liquid that is pumped into the rinsing distributor via the inlet opening of the rinsing distributor therefore preferably enters the rinsing distributor in a rear area in the transport direction A, so that during operation a flow can be generated in the rinsing distributor that is essentially opposite to the transport direction A is.
  • the scavenging distributor has a filter element or a sieve element which is designed and arranged within the scavenging distributor in such a way that from its one end facing the inlet opening, preferably from a rear region of the scavenging distributor in transport direction A, in extends in a direction opposite to the transport direction A at least as far as the last or rearmost connection opening of the flushing distributor in the transport direction A.
  • the filter element is also designed and positioned in the flushing distributor in such a way that it does not extend beyond the first or foremost connection opening of the flushing distributor in the transport direction A.
  • the filter element is designed such that it acts as an overflow filter, so that the dirt or particles retained by the filter element can be discharged via the flushing arms, which are in the transport direction A in a front region.
  • the filter element is also cleaned automatically and during operation, so that it is generally not necessary to remove the filter element for cleaning purposes.
  • Such a transport dishwasher has the advantage that due to the filter, which extends over the last or rearmost connection opening of the flushing distributor in the transport direction A, the washing arm, which is connected to this last or rearmost connection opening, is exposed to a washing liquid which, to a lesser extent, dirt or particles.
  • the rinsing arm located further to the rear in transport direction A is therefore loaded with dirt or dirt particles to a lesser extent, which also has the advantage that the dirt or contamination or dirt particles are prevented from being carried over into the subsequent rinsing zone or into another subsequent zone. In the case of single-tank machines, this relieves the fresh water rinsing process Multi-tank machines, the downstream rinsing zone and the pump rinsing are relieved in particular.
  • the rinsing liquor will therefore be less and less contaminated in the flow direction or transport direction;
  • the conveyor dishwasher comprises a plurality of flushing distributors in a flushing zone, to each of which a plurality of flushing arms are connected.
  • a conveyor dishwasher preferably comprises a washing zone with an upper washing distributor and a lower washing distributor, so that the dishes or items to be cleaned can be exposed to washing liquid from above and from below.
  • the multiple rinsing distributors in a rinsing zone can each have the same number of rinsing arms, but in a preferred embodiment it is also possible for a different number of rinsing arms to be provided per rinsing distributor.
  • an upper rinse manifold may be configured to serve a total of five rinse arms, while a lower rinse manifold may be configured to serve fewer rinse arms, such as three rinse arms.
  • the flushing distributor is preferably of tubular or cylindrical design, having a longitudinal axis which extends parallel or essentially parallel to the transport direction A. This ensures that the flow within the flushing distributor is as uniform and largely laminar as possible.
  • the filter element is particularly preferably tubular or cylindrical, with the filter element having a longitudinal axis which extends parallel or essentially parallel to a longitudinal direction or a longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A.
  • Such a configuration of the filter element has the advantage that a uniform flow is ensured or maintained, in particular in connection with the tubular or cylindrical flushing distributor. In particular, turbulence within the flushing distributor is reduced or largely avoided.
  • the filter element has a closed shape in a cross-sectional direction perpendicular to the transport direction A, in particular a circular shape, an oval shape or a rectangular or square shape.
  • a closed shape in a cross-sectional direction perpendicular to the transport direction A in particular a circular shape, an oval shape or a rectangular or square shape.
  • One such filter element is On the one hand, it is simple and inexpensive to manufacture, and it also supports an even flow within the flushing distributor.
  • the filter element is tubular or cylindrical, with the filter element having a longitudinal axis as well as a side wall and two end faces.
  • the side wall is preferably provided with filter openings or sieve openings at least in partial areas, particularly preferably over the entire area, with at least one end face, preferably both end faces, being partially or particularly preferably completely open or being provided with an opening, alternatively with several openings .
  • an overflow filter is implemented in a particularly preferred manner, which has the particular advantage that the dirt retained by the filter element or the particles retained by the filter element are passed on and transferred to the spray arms that are further ahead in transport direction A. This also ensures automatic cleaning of the filter element during operation of the transport dishwasher in a particularly advantageous and effective manner.
  • the filter element is cylindrical or truncated, with a longitudinal axis of the cylindrical or truncated cone extending parallel or essentially parallel to a longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A.
  • a longitudinal axis of the cylindrical or truncated cone extending parallel or essentially parallel to a longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A.
  • the filter element is preferably arranged in the flushing distributor in such a way that one end is directly adjacent to the inlet opening of the flushing distributor. In particular, this ensures that all flushing liquid that is pumped into the flushing distributor must run through the filter element.
  • a cross-sectional area of the filter element in its rear area in transport direction A, ie in an area facing the inlet opening of the flushing distributor, is preferably so large that it completely covers a cross-sectional area of the inlet opening of the flushing distributor.
  • the cross-sectional area of the filter element is particularly preferably larger than the cross-sectional area of the inlet opening of the flushing distributor.
  • the filter element extends from the area of the flushing distributor in which the inlet opening is positioned, or from a rear area of the flushing distributor in transport direction A, only over the last or rearmost connection opening of the flushing distributor in transport direction A, or alternatively only over the in Transport direction A last or rearmost two or only via the last or rearmost three connection openings.
  • the dimensions of the filter element are therefore kept small, which on the one hand reduces costs and on the other hand keeps a pressure loss through the filter element to a very low extent, but at the same time the effects and advantageous effects described above are achieved, in particular avoided or largely avoided, that particles, in particular dirt particles, are guided into the rinsing arm located at the rear in the transport direction A, but the particles can be discharged via the rinsing arms located further forward in the transport direction A.
  • the filter element is preferably an edge filter, the edge filter preferably having a longitudinal axis which extends parallel or essentially parallel to the longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A.
  • An edge filter is particularly advantageous for the essentially linear flows present in the flushing distributor, because a linear or laminar flow can be maintained to a large extent, turbulence can be largely avoided or reduced, so that in particular a pressure loss through the filter element is avoided or can be kept to a small extent.
  • the filter element designed as an edge filter is preferably tubular, preferably also tapering, or essentially tubular, for example also cylindrical, in particular and preferably primarily frustoconical, and has a plurality of gaps over its circumference, which extend in the longitudinal direction of the filter element.
  • the gap width of a gap in the filter element is preferably constant in a longitudinal extension of the filter element; all gaps in the filter element are particularly preferably designed with an identical gap width.
  • the filter element is designed in such a way that at least one of the gaps, preferably all gaps, increase in size in a direction opposite to transport direction A, preferably increase continuously. In a particularly advantageous manner, this prevents possible jamming of particles, so that in particular the self-cleaning effect of the filter element is further enhanced.
  • the filter element is tubular or essentially tubular, with the cross-sectional area of the filter element in a cross-section perpendicular to the transport direction A and/or the diameter and/or the edge length of a cross-sectional area of the filter element perpendicular to the transport direction A in a direction opposite to the transport direction A decreases, preferably decreases continuously.
  • Such a configuration of the filter element particularly supports the flow within the flushing distributor and/or within the filter element, with acceleration of the flushing liquid within the filter element in a direction opposite to the transport direction A being supported.
  • the filter element includes a positioning element, preferably in the form of a centering ring.
  • This positioning element is particularly preferably arranged in a front region of the filter element in the transport direction, with the positioning element being particularly preferably attached to one end of the filter element that is furthest away from the inlet opening of the flushing distributor. This ensures that the filter element is positioned securely within the flushing distributor.
  • this positioning element is arranged in an area between the filter element and the walls of the flushing distributor, i.e. preferably in a radially outer area of the flushing distributor, and is designed in such a way that a flushing liquid that is already in an area of the flushing distributor that is in Transport direction A is in front of the positioning element, cannot flow back through the positioning element into an area which is behind the positioning element in the transport direction A and between the filter element and the walls of the flushing distributor.
  • this prevents particles that have already passed through the filter element from entering an area in which the last or rearmost connection opening in transport direction A is located, so that this prevents particles from being transported via the flushing arm at the rear in transport direction A or alternatively via the rinsing arms located at the rear in the transport direction A, in particular the last or the last two rinsing arms located at the rear in the transport direction A become.
  • This ensures in particular that the rinsing liquid, which is discharged via the rinsing arm located at the rear in the transport direction, is kept particularly free of dirt and dirt particles.
  • Such a positioning element is implemented in a particularly advantageous manner by an annular or essentially annular element which, in the cross-sectional direction perpendicular to the transport direction A or perpendicular to a longitudinal axis of the flushing distributor, extends completely or essentially completely from an outer area of the filter element, in particular a radial outer area of the filter element, extends to the side walls of the flushing manifold.
  • the filter element is releasably and/or replaceably mounted in the flushing manifold. This has the advantage that the filter element can be replaced, for example after prolonged use. It is also possible to use different filter elements, in particular with different filter openings or sieve openings, depending on the use of the transport dishwasher or depending on the type and/or extent of the items to be cleaned , to use.
  • the present invention also includes a filter element or a flush manifold with such a filter element for a conveyor dishwasher according to any one of the preceding claims, wherein the filter element is designed so that it is fixed or can be fixed within the flush manifold and wherein the filter element is tubular or substantially tubular is trained.
  • the filter element is particularly preferably an edge filter.
  • FIG. 1 shows schematically and in a perspective view a washing zone 100 of an embodiment of a conveyor dishwasher 10 according to the invention. Dishes or items to be washed are moved in the transport direction A through the washing zone 100, for example by means of a conveyor belt, which is not shown to clarify the other components.
  • the conveyor dishwasher 10 includes several wash zones, but for the sake of clarity in 1 Only one rinsing zone 100 is shown, and various other elements, such as the conveyor belt, guide devices for this, connecting devices and areas for further rinsing zones and further elements, have also been omitted in order to show the essential elements more clearly.
  • the conveyor dishwasher 10 includes a tank 200, which is the 1 shown rinsing zone 100 is associated and can accommodate a rinsing liquid. Furthermore, the conveyor dishwasher 10 comprises two flushing distributors 400, an upper flushing distributor 402 and a lower flushing distributor 404, which are connected to the tank 200 via a supply line 300.
  • Each of the flushing distributors 400 supplies several flushing arms 500, with the perspective view in 1 only the rinse arms 500 fed by the lower rinse manifold 404 are visible.
  • Each of the rinsing arms 500 in turn has a plurality of dispensing elements 510 which, in this embodiment, are each designed as dispensing nozzles.
  • the dispensing elements 510 are in this expression on the upper sides of the spray arms 500, the of the lower rinsing distributor 404, so that a rinsing liquid can be discharged upwards from the rinsing arms 500 arranged in the lower region of the rinsing zone 100, so that dishes or items to be washed that are transported through the rinsing zone 100 in transport direction A are supplied with rinsing liquid from below can be charged.
  • the dispensing members are located on a lower side of the wash arms so that wash liquid can be dispensed down onto the dishes or items to be washed. The items to be washed are thus treated and washed reliably from both sides, above and below.
  • FIG 2 shows schematically in a partial sectional view the in 1 shown rinsing zone 100 of the embodiment of the conveyor dishwasher 10.
  • the tank 200 which is connected via a supply line 300 to the rinsing manifolds 400, both to the upper rinsing manifold 402 and to the lower rinsing manifold 404, so that a rinsing liquid in the tank 200 is pumped out of the tank 200 by means of a pump 220 and through the Supply line 300 can be pumped into flushing manifolds 400 (402 and 404).
  • a total of five rinsing arms are connected to the upper rinsing manifold 402, while only three rinsing arms are connected to the lower rinsing manifold 404 in this embodiment.
  • Each of the flushing distributors 402, 404 has a filter element 600, which only extends across the last connection opening 420' in transport direction A, while the other connection openings 420, a total of four remaining connection openings 420 in the upper flushing distributor and a total of two remaining connection openings 420 in the lower flushing distributor , do not lie in the area of the longitudinal extension, in the direction of transport direction A, of the filter element 600 .
  • FIGS 1 and 2 shown shows a perspective view of a filter element 600 according to the invention, as in a conveyor dishwasher 10 according to the invention, in particular in a conveyor dishwasher, as in FIGS 1 and 2 shown can be used.
  • the filter element 600 shown is an edge filter with an overflow function, which extends in its longitudinal direction from its one end 602, which is in installed state within the flushing manifold faces the inlet opening of the flushing manifold (see in particular 2 ), extends to its other end 604, in the installed state from its one end 602 in a direction opposite to the transport direction A and via the last or rearmost connection opening (420', see transport direction A). 2 ) of the flushing manifold 400, 402, 404 to its other end 604.
  • the filter element 600 At its end 602 facing the inlet opening, the filter element 600 comprises a fastening element 660, which also serves as a positioning element, and at its end 604 facing away from the inlet opening, the filter element 600 comprises a positioning element 640.
  • the fastening element 660 and the positioning element 640 have an identical one in this embodiment Outer radius so that the filter element 600 can be fixed well in a cylindrical flushing manifold 400, see in particular 4 .
  • the filter element 600 has a circular cross section and is tapered, in this case frustoconical, with the diameter of the circular cross section decreasing continuously from its end 602 facing the inlet opening in the direction of the end 604 facing away from the inlet opening.
  • the filter element 600 therefore has an inlet opening 612 at its end 602 facing the inlet opening (410) in the installed state, while at its other end 604 it has an outlet opening (604, see FIG figure 5 ) has, so that an overflow function is also ensured, which enables self-cleaning of the filter element 600.
  • FIG. 4 12 shows a partial cross-sectional view of an upper purge manifold 402 connected to a supply line 300.
  • FIG. 4 shows very clearly the positioning of the filter element 600 in this preferred embodiment, which extends from its one end, which faces an inlet opening 410 of the upper flushing distributor 402, in a direction opposite to the transport direction A to beyond the last or rearmost connection opening 420' in the transport direction A extends.
  • the filter element 600 ends, in a direction opposite to the transport direction A, in front of the further connection openings 420 of the upper flushing distributor 402.
  • the filter element 600 comprises a positioning element 640 which is attached in a front area of the filter element in the transport direction A, which is furthest away from the inlet opening 410 of the flushing distributor. at its other end, the rear end in transport direction A, the filter element 600 comprises a further ring-shaped element, the fastening element 660, which is also essentially ring-shaped.
  • the fastening element 660 and the positioning element 640 have an identical outer diameter, so that the filter element 600 is reliably arranged in the cylindrical upper flushing manifold 402 .
  • the ring-shaped positioning element 640 is designed as a ring-shaped plate that has no openings, so that no liquid whatsoever can flow from an area within the upper flushing manifold 402, which lies in front of the ring-shaped positioning element 640 in the transport direction A, into an area that is in the transport direction A is located behind the position element 640 and which is located outside the filter surface of the filter element 600, which is conical in this embodiment, without the liquid having to flow through the filter surface of the filter element 600.
  • This can occasionally or partly arise from the fact that turbulence arises, although the main direction of flow of the rinsing liquid in the 4 shown embodiment runs essentially opposite to the transport direction A.
  • the inlet opening 410 and the filter element 600 are designed and dimensioned in such a way that all liquid that flows from the supply line 300 into the inlet opening 410 of the flushing distributor flows into the inner area of the filter element 610, in other words, into a radially inner area of the filter element 600. This ensures that no liquid whatsoever can flow through the last or rearmost connection opening 420′ in transport direction A without passing through the filter surfaces of the filter element 600.
  • figure 5 shows a plan view of the in the 3 and 4 Filter element 600 shown from the side facing inlet opening 410 when installed, as well as a partial enlargement of area Z marked with a circle.
  • the ring-shaped fastening element 660 and the structure of the filter element 600 which is designed as an edge filter with a plurality of gaps 620.
  • the gaps 620 have a constant gap width x, the gap width remaining constant over the longitudinal extension of each individual gap 620 and being constant in comparison between the plurality of individual gaps.
  • gaps that have a gap width that increases, preferably continuously increases, in the longitudinal direction or in the direction of flow, ie in a direction opposite to the transport direction A.

Description

Die vorliegende Erfindung betrifft eine Transportgeschirrspülmaschine, die insbesondere im gewerblichen Bereich eingesetzt wird, wobei solche Transportgeschirrspülmaschinen üblicherweise eine oder mehrere Spülzonen umfassen, durch die zu spülendes Spülgut, bevorzugt mittels eines Transportbandes, transportiert und behandelt wird.The present invention relates to a conveyor dishwasher which is used in particular in the commercial sector, such conveyor dishwashers usually comprising one or more washing zones through which items to be washed are transported and treated, preferably by means of a conveyor belt.

Solche Transportgeschirrspülmaschinen sind in mannigfaltiger Form bekannt, beispielsweise aus der WO 2015/171490 A1 oder aus der US 4 657 188 A .Such transport dishwashers are known in many forms, for example from WO 2015/171490 A1 or from the U.S. 4,657,188 A .

Eine weitere Transportgeschirrspülmaschine ist ferner aus der WO 2008/100741 A1 bekannt, die einen Tank zur Aufnahme von Spülflüssigkeit, mehrere Spülarme zur Abgabe von Spülflüssigkeit und einen Spülverteiler zur Versorgung der Spülarme offenbart, im Wesentlichen wie es im einleitenden Teil des Anspruchs 1 beschrieben ist.Another transport dishwasher is also from WO 2008/100741 A1 is known which discloses a tank for receiving washing liquid, a plurality of washing arms for dispensing washing liquid and a washing manifold for supplying the washing arms, essentially as described in the preamble of claim 1.

Insbesondere aus Gründen des Umweltschutzes und des sparsamen Umgangs mit Ressourcen werden immer größere Anforderungen an solche Transportgeschirrspülmaschinen gestellt.In particular, for reasons of environmental protection and the economical use of resources, increasing demands are being placed on such transport dishwashers.

Es ist daher eine Aufgabe der vorliegenden Erfindung, eine Transportgeschirrspülmaschine zur Verfügung zu stellen, die, auch bei sparsamen Umgang mit Ressourcen, insbesondere mit der Menge der verwendeten Spülflüssigkeit, ein gutes Spülergebnis für das zu reinigende Spülgut liefert.It is therefore an object of the present invention to provide a conveyor dishwasher which, even when using resources sparingly, in particular with the amount of washing liquid used, delivers a good washing result for the items to be washed.

Diese Aufgabe wird durch eine Transportgeschirrspülmaschine gemäß Anspruch 1 gelöst, die Ansprüche 2 bis 13 betreffen besonders vorteilhafte Ausführungsformen der erfindungsgemä-ßen Transportgeschirrspülmaschine. Die Erfindung betrifft ferner ein Filterelement oder einen Spülverteiler mit einem solchen Filterelement gemäß Anspruch 14 für einen Einsatz in einer Transportgeschirrspülmaschine gemäß einem der Ansprüche 1 bis 13. Anspruch 15 betrifft eine besonders vorteilhafte Ausführungsformen des Filterelements oder des Spülverteilers mit einem solchen Filterelement.This object is achieved by a conveyor dishwasher according to claim 1, claims 2 to 13 relate to particularly advantageous embodiments of the conveyor dishwasher according to the invention. The invention also relates to a filter element or a flushing distributor with such a filter element according to claim 14 for use in a transport dishwasher according to one of claims 1 to 13. Claim 15 relates to a particularly advantageous embodiment of the filter element or flushing distributor with such a filter element.

Die Transportgeschirrspülmaschine gemäß der Erfindung umfasst mindestens eine Spülzone, wobei bevorzugt auch mehrere Spülzonen, beispielsweise eine Haupt-Spülzone und optional eine vorgelagerte Vorspülzone und/oder eine nachgelagerte Nachspülzone, aber auch andere Spülzonen und/oder andere Behandlungszonen, wie beispielsweise Trocknungszonen, vorgesehen sein können.The conveyor dishwasher according to the invention comprises at least one wash zone, preferably also several wash zones, for example a main wash zone and optionally an upstream pre-wash zone and/or a downstream final-wash zone, but also others Rinsing zones and/or other treatment zones, such as drying zones, can be provided.

Die Transportgeschirrspülmaschine gemäß der Erfindung ist dabei so ausgelegt, dass Geschirr oder zu reinigendes Spülgut oder andere zu reinigende Gegenstände in einer Transportrichtung A durch die mindestens eine Spülzone bewegt werden kann. Typischerweise umfasst eine solche Transportgeschirrspülmaschine ein Transportband, das das zu reinigende Spülgut oder das Geschirr in der Transportrichtung A durch die eine oder durch die mehreren Spülzonen und oder/Behandlungszonen transportiert, wobei das Spülgut entweder direkt auf das Transportband oder zugehörige Halterelemente gesetzt werden kann oder aber das Spülgut in entsprechende Behälter oder Körbe platziert werden kann, die dann mittels des Transportbandes oder einer anderen Transportvorrichtung durch die eine oder durch die mehreren Spülzonen und/oder Behandlungszonen der Geschirrspülmaschine transportiert werden können.The conveyor dishwasher according to the invention is designed in such a way that dishes or items to be cleaned or other objects to be cleaned can be moved in a transport direction A through the at least one washing zone. Typically, such a conveyor dishwasher comprises a conveyor belt that transports the items to be cleaned or the dishes in the transport direction A through the one or more washing zones and/or treatment zones, with the items to be washed either being placed directly on the conveyor belt or associated holder elements or else the items to be washed can be placed in appropriate containers or baskets, which can then be transported through the one or through the multiple washing zones and/or treatment zones of the dishwasher by means of the conveyor belt or another transport device.

Die Transportgeschirrspülmaschine gemäß der Erfindung umfasst ferner einen Tank zur Aufnahme einer Spülflüssigkeit. Der Begriff Spülflüssigkeit, wie er in dieser Anmeldung verwendet wird, ist in einem weiteren Umfang zu verstehen, wobei es sich bei der Spülflüssigkeit bspw. um Wasser handeln kann, ohne dass bestimmte Zusätze beigemischt sind, beispielsweise für eine Nachspülzone, aber auch um andere Flüssigkeiten und Lösungen, beispielsweise Wasser, dem ein Reinigungsmittel zugesetzt ist.The conveyor dishwasher according to the invention also includes a tank for holding a washing liquid. The term rinsing liquid, as used in this application, is to be understood in a broader scope, whereby the rinsing liquid can be water, for example, without specific additives being mixed in, for example for a rinsing zone, but also other liquids and solutions such as water to which a detergent is added.

Die erfindungsgemäße Transportgeschirrspülmaschine umfasst mehrere Spülarme mit jeweils mindestens einem Abgabeelement, bevorzugt mit einer Mehrzahl von Abgabeelementen, insbesondere beispielsweise Sprühdüsen, zur Abgabe von Spülflüssigkeit in die mindestens eine Spülzone. Die Spülarme in der Spülzone sind quer zur Transportrichtung A und in Transportrichtung hintereinander angeordnet.The conveyor dishwasher according to the invention comprises a plurality of washing arms, each with at least one dispensing element, preferably with a plurality of dispensing elements, in particular spray nozzles for example, for dispensing washing liquid into the at least one washing zone. The rinsing arms in the rinsing zone are arranged one behind the other transversely to the transport direction A and in the transport direction.

Ferner umfasst die erfindungsgemäße Transportgeschirrspülmaschine einen Spülverteiler zur Versorgung der mehreren Spülarme mit einer Spülflüssigkeit. Der Spülverteiler ist über eine Zuführleitung mit dem Tank verbunden, und der Spülverteiler umfasst mehrere Verbindungsöffnungen, wobei jeder der mehreren Spülarme an einer der Verbindungsöffnungen angeschlossen ist. Dadurch kann Spülflüssigkeit aus dem Tank über die Zuführleitung in den Spülverteiler und von dem Spülverteiler über die Verbindungsöffnungen in die mehreren Spülarme gepumpt werden. Typischerweise umfasst eine Transportgeschirrspülmaschine gemäß der Erfindung eine oder mehrere Pumpen, die an verschiedenen Stellen innerhalb der Transportgeschirrspülmaschine angeordnet sein können, bevorzugt in einem Tank oder in der Nähe eines Tanks.Furthermore, the conveyor dishwasher according to the invention comprises a rinsing distributor for supplying the several rinsing arms with a rinsing liquid. The flushing manifold is connected to the tank via a supply line, and the flushing manifold includes a plurality of connection ports, with each of the plurality of flushing arms being connected to one of the connection ports. As a result, rinsing liquid can be pumped from the tank via the supply line into the rinsing distributor and from the rinsing distributor through the connection openings into the plurality of rinsing arms. Typically, a conveyor dishwasher comprises according to the invention one or more pumps, which can be arranged at various points within the conveyor dishwasher, preferably in a tank or in the vicinity of a tank.

Gemäß der Erfindung ist die Zuführleitung an einer Einlauföffnung des Spülverteilers angeschlossen, wobei die Einlauföffnung in einem Bereich angeordnet ist, der, in Transportrichtung A, hinter einer in Transportrichtung A letzten oder hintersten Verbindungsöffnung des Spülverteilers liegt, damit bevorzugt in einem in Transportrichtung A hinteren Bereich des Spülverteilers angeordnet ist. Eine Spülflüssigkeit, die über die Einlauföffnung des Spülverteilers in den Spülverteiler gepumpt wird, tritt daher bevorzugt in einem in Transportrichtung A hinteren Bereich in den Spülverteiler ein, sodass im Betrieb eine Strömung in dem Spülverteiler erzeugt werden kann, die der Transportrichtung A im wesentlichen entgegengesetzt ausgerichtet ist.According to the invention, the feed line is connected to an inlet opening of the flushing distributor, with the inlet opening being arranged in an area which, in transport direction A, is behind a last or rearmost connection opening of the flushing distributor in transport direction A, and thus preferably in a rear area in transport direction A of the flushing distributor is arranged. A rinsing liquid that is pumped into the rinsing distributor via the inlet opening of the rinsing distributor therefore preferably enters the rinsing distributor in a rear area in the transport direction A, so that during operation a flow can be generated in the rinsing distributor that is essentially opposite to the transport direction A is.

Gemäß der Erfindung weist der Spülverteiler ein Filterelement oder ein Siebelement auf, das so ausgebildet und innerhalb des Spülverteilers so angeordnet ist, dass es sich von seinem einen Ende, das der Einlauföffnung zugewandt ist, bevorzugt von einem in Transportrichtung A hinteren Bereich des Spülverteilers, in einer Richtung entgegengesetzt zur Transportrichtung A mindestens bis über die in Transportrichtung A letzte oder hinterste Verbindungsöffnung des Spülverteilers erstreckt. Das Filterelement ist ferner so ausgelegt und so in dem Spülverteiler positioniert, dass es sich nicht über die in Transportrichtung A erste oder vorderste Verbindungsöffnung des Spülverteilers erstreckt.According to the invention, the scavenging distributor has a filter element or a sieve element which is designed and arranged within the scavenging distributor in such a way that from its one end facing the inlet opening, preferably from a rear region of the scavenging distributor in transport direction A, in extends in a direction opposite to the transport direction A at least as far as the last or rearmost connection opening of the flushing distributor in the transport direction A. The filter element is also designed and positioned in the flushing distributor in such a way that it does not extend beyond the first or foremost connection opening of the flushing distributor in the transport direction A.

Das Filterelement ist erfindungsgemäß so ausgebildet, dass es als Überströmfilter wirkt, so dass der durch das Filterelement zurückgehaltene Schmutz oder die zurückgehaltenen Partikel über die Spülarme ausgetragen werden kann, die in Transportrichtung A in einem vorderen Bereich liegen. Hierdurch wird auch das Filterelement automatisch und während des Betriebs gereinigt, sodass ein Ausbau des Filterelements zu Reinigungszwecken in der Regel nicht erforderlich ist. Eine solche Transportgeschirrspülmaschine hat den Vorteil, dass aufgrund des Filters, der sich über die in Transportrichtung A letzte oder hinterste Verbindungsöffnung des Spülverteilers erstreckt, der Spülarm, der an dieser letzten oder hintersten Verbindungsöffnung angeschlossen ist mit einer Spülflüssigkeit beaufschlagt wird, die in geringerem Ausmaß mit Verschmutzung oder Partikeln versehen ist. Der in Transportrichtung A weiter hinten liegende Spülarm ist daher in einem geringeren Ausmaß mit Schmutz oder Schmutzpartikeln befrachtet, was auch den Vorteil hat, dass eine Verschleppung des Schmutzes oder der Verunreinigung oder der Schmutzpartikel in die nachfolgende Spülzone oder in eine andere nachfolgende Zone vermieden wird. Bei Eintankmaschinen wird dadurch die Frischwassernachspülung entlastet, bei Mehrtankmaschinen wird insbesondere die nachfolgende Spül-Zone sowie die Pumpennachspülung entlastet.According to the invention, the filter element is designed such that it acts as an overflow filter, so that the dirt or particles retained by the filter element can be discharged via the flushing arms, which are in the transport direction A in a front region. As a result, the filter element is also cleaned automatically and during operation, so that it is generally not necessary to remove the filter element for cleaning purposes. Such a transport dishwasher has the advantage that due to the filter, which extends over the last or rearmost connection opening of the flushing distributor in the transport direction A, the washing arm, which is connected to this last or rearmost connection opening, is exposed to a washing liquid which, to a lesser extent, dirt or particles. The rinsing arm located further to the rear in transport direction A is therefore loaded with dirt or dirt particles to a lesser extent, which also has the advantage that the dirt or contamination or dirt particles are prevented from being carried over into the subsequent rinsing zone or into another subsequent zone. In the case of single-tank machines, this relieves the fresh water rinsing process Multi-tank machines, the downstream rinsing zone and the pump rinsing are relieved in particular.

Insbesondere bei Mehrtankmaschinen wird dadurch die Spülflotte in Durchlaufrichtung oder Transportrichtung immer geringer schmutzbefrachtet sein, insbesondere wird eine Laugenverschleppung in die nächste Zone vermieden oder zumindest verringert.In the case of multi-tank machines in particular, the rinsing liquor will therefore be less and less contaminated in the flow direction or transport direction;

Bei einer bevorzugten Ausführungsform umfasst die Transportgeschirrspülmaschine mehrere Spülverteiler in einer Spülzone, an die jeweils mehrere Spülarme angeschlossen sind. Bevorzugt umfasst eine solche Transportgeschirrspülmaschine eine Spülzone mit einem oberen Spülverteiler und einem unteren Spülverteiler, sodass das zu reinigende Geschirr oder Spülgut von oben und von unten mit Spülflüssigkeit beaufschlagt werden kann. Die mehreren Spülverteiler in einer Spülzone können jeweils die gleiche Anzahl von Spülarmen aufweisen, es ist jedoch bei einer bevorzugten Ausführungsform auch möglich, dass eine unterschiedliche Anzahl von Spülarmen pro Spülverteiler vorgesehen ist. Beispielsweise kann ein oberer Spülverteiler so ausgebildet sein, dass er insgesamt fünf Spülarme versorgt, während ein unterer Spülverteiler so ausgebildet ist, dass er weniger Spülarme versorgt, beispielsweise drei Spülarme.In a preferred embodiment, the conveyor dishwasher comprises a plurality of flushing distributors in a flushing zone, to each of which a plurality of flushing arms are connected. Such a conveyor dishwasher preferably comprises a washing zone with an upper washing distributor and a lower washing distributor, so that the dishes or items to be cleaned can be exposed to washing liquid from above and from below. The multiple rinsing distributors in a rinsing zone can each have the same number of rinsing arms, but in a preferred embodiment it is also possible for a different number of rinsing arms to be provided per rinsing distributor. For example, an upper rinse manifold may be configured to serve a total of five rinse arms, while a lower rinse manifold may be configured to serve fewer rinse arms, such as three rinse arms.

Bevorzugt ist der Spülverteiler röhrenförmig oder zylinderförmig ausgebildet, wobei er eine Längsachse aufweist, die sich parallel oder im wesentlichen parallel zur Transportrichtung A erstreckt. Dies stellt eine möglichst gleichmäßige und weitgehend laminare Strömung innerhalb des Spülverteilers sicher.The flushing distributor is preferably of tubular or cylindrical design, having a longitudinal axis which extends parallel or essentially parallel to the transport direction A. This ensures that the flow within the flushing distributor is as uniform and largely laminar as possible.

Besonders bevorzugt ist das Filterelement röhrenförmig oder zylinderförmig ausgebildet, wobei das Filterelement eine Längsachse aufweist, die sich parallel oder im wesentlichen parallel zu einer Längsrichtung oder einer Längsachse des Spülverteilers und/oder parallel oder im Wesentlichen parallel zur Transportrichtung A erstreckt. Eine solche Ausgestaltung des Filterelement hat den Vorteil, dass eine gleichmäßige Strömung, insbesondere in Verbindung mit dem röhrenförmigen oder zylinderförmigen Spülverteiler, sichergestellt oder aufrechterhalten wird. Insbesondere werden Turbulenzen innerhalb des Spülverteilers verringert oder weitgehend vermieden.The filter element is particularly preferably tubular or cylindrical, with the filter element having a longitudinal axis which extends parallel or essentially parallel to a longitudinal direction or a longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A. Such a configuration of the filter element has the advantage that a uniform flow is ensured or maintained, in particular in connection with the tubular or cylindrical flushing distributor. In particular, turbulence within the flushing distributor is reduced or largely avoided.

Bei einer bevorzugten Ausführungsform weist das Filterelement in einer Querschnittsrichtung senkrecht zur Transportrichtung A eine geschlossene Form auf, insbesondere eine Kreisform, eine ovale Form oder eine rechteckige oder quadratische Form. Ein solches Filterelement ist zum einen einfach und kostengünstig herzustellen, ferner unterstützt es eine gleichmäßige Strömung innerhalb des Spülverteilers.In a preferred embodiment, the filter element has a closed shape in a cross-sectional direction perpendicular to the transport direction A, in particular a circular shape, an oval shape or a rectangular or square shape. One such filter element is On the one hand, it is simple and inexpensive to manufacture, and it also supports an even flow within the flushing distributor.

Bei einer bevorzugten Ausführungsform ist das Filterelement röhrenförmig oder zylinderförmig ausgebildet, wobei das Filterelement eine Längsachse sowie eine Seitenwand und zwei Stirnflächen aufweist. Bevorzugt ist die Seitenwand zumindest in Teilbereichen, besonders bevorzugt über den gesamten Bereich, mit Filteröffnungen oder Sieböffnungen versehen, wobei zumindest eine Stirnfläche, bevorzugt beide Stirnflächen, teilweise oder besonders bevorzugt vollständig offen ausgebildet sind oder mit einer Öffnung, alternativ mit mehreren Öffnungen, versehen sind. Hierdurch wird auf besonders bevorzugte Weise ein Überströmfilter realisiert, was insbesondere den Vorteil hat, dass der durch das Filterelement zurückgehaltene Schmutz oder die durch das Filterelement zurückgehaltenen Partikel weitergeleitet und auf die Spülarme übertragen wird, die in Transportrichtung A weiter vorne liegen. Hierdurch wird auch eine automatische Reinigung des Filterelements während des Betriebs der Transportgeschirrspülmaschine auf besonders vorteilhafte und effektive Weise sichergestellt.In a preferred embodiment, the filter element is tubular or cylindrical, with the filter element having a longitudinal axis as well as a side wall and two end faces. The side wall is preferably provided with filter openings or sieve openings at least in partial areas, particularly preferably over the entire area, with at least one end face, preferably both end faces, being partially or particularly preferably completely open or being provided with an opening, alternatively with several openings . In this way, an overflow filter is implemented in a particularly preferred manner, which has the particular advantage that the dirt retained by the filter element or the particles retained by the filter element are passed on and transferred to the spray arms that are further ahead in transport direction A. This also ensures automatic cleaning of the filter element during operation of the transport dishwasher in a particularly advantageous and effective manner.

Gemäß einer weiteren bevorzugten Ausführungsform ist das Filterelement zylinderförmig oder kegelstumpfförmig ausgebildet, wobei sich eine Längsachse des zylinderförmigen oder kegelstumpfförmigen parallel oder im Wesentlichen parallel zu einer Längsachse des Spülverteilers und/oder parallel oder im Wesentlichen parallel zur Transportrichtung A erstreckt. Eine solche Ausführungsform führt zu einer besonders gleichmäßige Strömung innerhalb des Spülverteilers. Eine kegelstumpfförmige Ausbildung führt ferner zu einer Beschleunigung der Strömung in einem inneren Bereich des Filterelements, was insbesondere die Reinigungswirkung erhöht.According to a further preferred embodiment, the filter element is cylindrical or truncated, with a longitudinal axis of the cylindrical or truncated cone extending parallel or essentially parallel to a longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A. Such an embodiment leads to a particularly uniform flow within the flushing distributor. A frustoconical design also leads to an acceleration of the flow in an inner area of the filter element, which in particular increases the cleaning effect.

Bevorzugt ist das Filterelement so in dem Spülverteiler angeordnet, dass es mit einem Ende direkt an die Einlauföffnung des Spülverteilers angrenzt. Damit wird insbesondere sichergestellt, dass sämtliche Spülflüssigkeit, die in den Spülverteiler gepumpt wird, durch das Filterelement laufen muss.The filter element is preferably arranged in the flushing distributor in such a way that one end is directly adjacent to the inlet opening of the flushing distributor. In particular, this ensures that all flushing liquid that is pumped into the flushing distributor must run through the filter element.

Bevorzugt ist eine Querschnittsfläche des Filterelements in seinem in Transportrichtung A hinteren Bereich, also in einem Bereich, der der Einlauföffnung des Spülverteilers zugewandt ist, so groß, dass sie eine Querschnittfläche der Einlauföffnung des Spülverteilers vollständig abdeckt. Besonders bevorzugt ist die Querschnittsfläche des Filterelements größer als die Querschnittfläche der Einlauföffnung des Spülverteilers. Hierdurch wird die oben genannte vorteilhafte Wirkung, gemäß der sämtliche Spülflüssigkeit durch das Filterelement geführt wird, noch weiter unterstützt.A cross-sectional area of the filter element in its rear area in transport direction A, ie in an area facing the inlet opening of the flushing distributor, is preferably so large that it completely covers a cross-sectional area of the inlet opening of the flushing distributor. The cross-sectional area of the filter element is particularly preferably larger than the cross-sectional area of the inlet opening of the flushing distributor. This will do the above advantageous effect, according to which all rinsing liquid is passed through the filter element, supported even further.

Bei einer besonderen Ausführungsform erstreckt sich das Filterelement von dem Bereich des Spülverteilers, in dem die Einlauföffnung positioniert ist, oder von einem in Transportrichtung A hinteren Bereich des Spülverteilers, nur über die in Transportrichtung A letzte oder hinterste Verbindungsöffnung des Spülverteilers oder alternativ nur über die in Transportrichtung A letzten oder hintersten beiden oder nur über die letzten oder hintersten drei Verbindungsöffnungen. Das Filterelement wird daher in seinen Abmessungen gering gehalten, was zum einen Kosten reduziert und zum anderen einen Druckverlust durch das Filterelement in einem sehr geringen Ausmaß hält, wobei jedoch gleichzeitig die oben beschriebenen Effekte und vorteilhaften Wirkungen erzielt werden, insbesondere vermieden oder weitgehend vermieden wird, dass Partikel, insbesondere Schmutzpartikel, in den in Transportrichtung A hinten liegenden Spülarm geführt werden, die Partikel aber über die Transportrichtung A weiter vorne liegenden Spülarme ausgetragen werden können.In a particular embodiment, the filter element extends from the area of the flushing distributor in which the inlet opening is positioned, or from a rear area of the flushing distributor in transport direction A, only over the last or rearmost connection opening of the flushing distributor in transport direction A, or alternatively only over the in Transport direction A last or rearmost two or only via the last or rearmost three connection openings. The dimensions of the filter element are therefore kept small, which on the one hand reduces costs and on the other hand keeps a pressure loss through the filter element to a very low extent, but at the same time the effects and advantageous effects described above are achieved, in particular avoided or largely avoided, that particles, in particular dirt particles, are guided into the rinsing arm located at the rear in the transport direction A, but the particles can be discharged via the rinsing arms located further forward in the transport direction A.

Bevorzugt ist das Filterelement ein Spaltfilter, wobei der Spaltfilter bevorzugt eine Längsachse aufweist, die sich parallel oder im Wesentlichen parallel zur Längsachse des Spülverteilers und/oder parallel oder im Wesentlichen parallel zur Transportrichtung A erstreckt. Ein Spaltfilter ist insbesondere bei den in dem Spülverteiler vorliegenden, im wesentlichen linearen Strömungen, besonders vorteilhaft, weil dadurch in einem großen Maße eine lineare oder laminare Strömung aufrechterhalten werden kann, Turbulenzen weitgehend vermieden oder reduziert werden können, sodass insbesondere ein Druckverlust durch das Filterelement vermieden oder in geringem Ausmaß gehalten werden kann.The filter element is preferably an edge filter, the edge filter preferably having a longitudinal axis which extends parallel or essentially parallel to the longitudinal axis of the flushing distributor and/or parallel or essentially parallel to the transport direction A. An edge filter is particularly advantageous for the essentially linear flows present in the flushing distributor, because a linear or laminar flow can be maintained to a large extent, turbulence can be largely avoided or reduced, so that in particular a pressure loss through the filter element is avoided or can be kept to a small extent.

Bevorzugt ist das als Spaltfilter ausgebildete Filterelement röhrenförmig, bevorzugt auch konisch zulaufend, oder im Wesentlichen röhrenförmig, beispielsweise auch zylinderförmig, insbesondere und bevorzugt vor allem kegelstumpfförmig, ausgebildet und weist über seinen Umfang eine Mehrzahl von Spalten auf, die sich in Längsrichtung des Filterelement erstrecken. Bevorzugt ist dabei die Spaltbreite eines Spalts des Filterelements in einer Längserstreckung des Filterelements konstant, insbesondere bevorzugt sind alle Spalte des Filterelements mit einer identischen Spaltbreite ausgebildet. Eine solche Ausgestaltung unterstützt insbesondere eine möglichst ungestörte Strömung innerhalb des Spülverteilers, wobei gleichzeitig die gewünschte Filterwirkung oder Siebwirkung sichergestellt wird.The filter element designed as an edge filter is preferably tubular, preferably also tapering, or essentially tubular, for example also cylindrical, in particular and preferably primarily frustoconical, and has a plurality of gaps over its circumference, which extend in the longitudinal direction of the filter element. In this case, the gap width of a gap in the filter element is preferably constant in a longitudinal extension of the filter element; all gaps in the filter element are particularly preferably designed with an identical gap width. Such a configuration supports in particular a flow that is as undisturbed as possible within the flushing distributor, while at the same time the desired filter effect or screening effect is ensured.

Bei einer anderen bevorzugten Ausführungsform ist das Filterelement so ausgebildet, dass sich zumindest einer der Spalte, bevorzugt alle Spalte, in einer Richtung entgegengesetzt zur Transportrichtung A vergrößern, bevorzugt sich kontinuierlich vergrößern. Dies verhindert auf besonders vorteilhafte Weise ein mögliches Verklemmen von Partikeln, sodass insbesondere die Selbstreinigungswirkung des Filterelements noch verstärkt wird.In another preferred embodiment, the filter element is designed in such a way that at least one of the gaps, preferably all gaps, increase in size in a direction opposite to transport direction A, preferably increase continuously. In a particularly advantageous manner, this prevents possible jamming of particles, so that in particular the self-cleaning effect of the filter element is further enhanced.

Bei einer besonderen Ausführungsform ist das Filterelement röhrenförmig oder im Wesentlichen röhrenförmig ausgebildet, wobei die Querschnittsfläche des Filterelements in einem Querschnitt senkrecht zur Transportrichtung A und/oder der Durchmesser und/oder die Kantenlänge einer Querschnittsfläche des Filterelements senkrecht zur Transportrichtung A in einer Richtung entgegen der Transportrichtung A abnimmt, bevorzugt kontinuierlich abnimmt. Eine solche Ausgestaltung des Filterelements unterstützt in besonderem Maße die Strömung innerhalb des Spülverteilers und/oder innerhalb des Filterelements, wobei eine Beschleunigung der Spülflüssigkeit innerhalb des Filterelements in einer Richtung entgegengesetzt zur Transportrichtung A unterstützt wird.In a particular embodiment, the filter element is tubular or essentially tubular, with the cross-sectional area of the filter element in a cross-section perpendicular to the transport direction A and/or the diameter and/or the edge length of a cross-sectional area of the filter element perpendicular to the transport direction A in a direction opposite to the transport direction A decreases, preferably decreases continuously. Such a configuration of the filter element particularly supports the flow within the flushing distributor and/or within the filter element, with acceleration of the flushing liquid within the filter element in a direction opposite to the transport direction A being supported.

Bei einer besonderen Ausführungsform umfasst das Filterelement ein Positionierelement, bevorzugt in Form eines Zentrierrings. Besonders bevorzugt ist dieses Positionselement in einem in Transportrichtung vorderen Bereich des Filterelements angeordnet, wobei das Positionselement besonders bevorzugt an einem Ende des Filterelements angebracht ist, dass von der Einlauföffnung des Spülverteilers am weitesten entfernt ist. Damit wird eine sichere Positionierung des Filterelements innerhalb des Spülverteilers sichergestellt.In a particular embodiment, the filter element includes a positioning element, preferably in the form of a centering ring. This positioning element is particularly preferably arranged in a front region of the filter element in the transport direction, with the positioning element being particularly preferably attached to one end of the filter element that is furthest away from the inlet opening of the flushing distributor. This ensures that the filter element is positioned securely within the flushing distributor.

Bei einer besonderen Ausführungsform ist dieses Positionierelement in einem Bereich zwischen dem Filterelement und den Wänden des Spülverteilers, bevorzugt also in einem radial äußeren Bereich des Spülverteilers, angeordnet und so ausgebildet, dass eine Spülflüssigkeit, die sich bereits in einem Bereich des Spülverteilers findet, der in Transportrichtung A vor dem Positionierelement liegt, nicht durch das Positionierelement in einen Bereich zurück strömen kann, der in Transportrichtung A hinter dem Positionierelement und zwischen dem Filterelement und den Wänden des Spülverteilers liegt. Damit wird insbesondere vermieden, dass Partikel, die das Filterelement bereits passiert haben, in einen Bereich gelangen, in dem die in Transportrichtung A letzte oder hinterste Verbindungsöffnung liegt, sodass hiermit vermieden wird, dass Partikel über den in Transportrichtung A hinten liegenden Spülarm oder alternativ über die in Transportrichtung A hinten liegenden Spülarme, insbesondere den letzten oder die beiden letzten in Transportrichtung A hinten liegenden Spülarme, abgegeben werden. Hiermit wird insbesondere sichergestellt, dass die Spülflüssigkeit, die über den in Transportrichtung hinten liegenden Spülarm abgegeben wird, besonders frei von Schmutz und Schmutzpartikeln gehalten wird.In a particular embodiment, this positioning element is arranged in an area between the filter element and the walls of the flushing distributor, i.e. preferably in a radially outer area of the flushing distributor, and is designed in such a way that a flushing liquid that is already in an area of the flushing distributor that is in Transport direction A is in front of the positioning element, cannot flow back through the positioning element into an area which is behind the positioning element in the transport direction A and between the filter element and the walls of the flushing distributor. In particular, this prevents particles that have already passed through the filter element from entering an area in which the last or rearmost connection opening in transport direction A is located, so that this prevents particles from being transported via the flushing arm at the rear in transport direction A or alternatively via the rinsing arms located at the rear in the transport direction A, in particular the last or the last two rinsing arms located at the rear in the transport direction A become. This ensures in particular that the rinsing liquid, which is discharged via the rinsing arm located at the rear in the transport direction, is kept particularly free of dirt and dirt particles.

Ein solches Positionierelement wird auf besonders vorteilhafte Weise durch ein ringförmiges oder im wesentlichen ringförmiges Element realisiert, das sich, in Querschnittsrichtung senkrecht zur Transportrichtung A oder senkrecht zu einer Längsachse des Spülverteilers, vollständig oder im Wesentlichen vollständig von einem äußeren Bereich des Filterelements, insbesondere einem radial äußeren Bereich des Filterelements, bis zu den Seitenwänden des Spülverteilers erstreckt.Such a positioning element is implemented in a particularly advantageous manner by an annular or essentially annular element which, in the cross-sectional direction perpendicular to the transport direction A or perpendicular to a longitudinal axis of the flushing distributor, extends completely or essentially completely from an outer area of the filter element, in particular a radial outer area of the filter element, extends to the side walls of the flushing manifold.

Bei einer besonders Ausführungsform ist das Filterelement lösbar und/oder austauschbar in dem Spülverteiler befestigt. Dies hat den Vorteil, dass das Filterelement, beispielsweise nach längerem Gebrauch, ausgetauscht werden kann, auch ist es möglich, unterschiedliche Filterelemente, insbesondere mit unterschiedlichen Filteröffnungen oder Sieböffnungen, je nach Einsatz der Transportgeschirrspülmaschine oder je nach Art und/oder Umfang des zu reinigende Spülguts, einzusetzen.In a particular embodiment, the filter element is releasably and/or replaceably mounted in the flushing manifold. This has the advantage that the filter element can be replaced, for example after prolonged use. It is also possible to use different filter elements, in particular with different filter openings or sieve openings, depending on the use of the transport dishwasher or depending on the type and/or extent of the items to be cleaned , to use.

Die vorliegende Erfindung umfasst auch ein Filterelement oder einen Spülverteiler mit einen solchen Filterelement für eine Transportgeschirrspülmaschine nach einem der vorhergehenden Ansprüche, wobei das Filterelement so ausgebildet ist, dass es innerhalb des Spülverteilers befestigt ist oder befestigt werden kann und wobei das Filterelement röhrenförmig oder im Wesentlichen röhrenförmig ausgebildet ist. Besonders bevorzugt ist das Filterelement ein Spaltfilter.The present invention also includes a filter element or a flush manifold with such a filter element for a conveyor dishwasher according to any one of the preceding claims, wherein the filter element is designed so that it is fixed or can be fixed within the flush manifold and wherein the filter element is tubular or substantially tubular is trained. The filter element is particularly preferably an edge filter.

Diese und weitere Merkmale und Vorteile der Erfindung werden anhand der nachfolgenden Zeichnungen, die eine besonders bevorzugte Ausführungsform der Transportgeschirrspülmaschine und des Filterelements bzw. des Spülverteilers mit einem solchen Filterelement zeigen:

Fig. 1
zeigt schematisch und in einer perspektivischen Ansicht eine Spülzone einer erfindungsgemäßen Transportgeschirrspülmaschine mit zwei Spülverteilern, an die jeweils mehrere Spülarme angeschlossen sind,
Fig. 2
zeigt schematisch und in einer teilweisen Schnittansicht die in Fig. 1 gezeigte Ausführungsform der erfindungsgemäßen Transportgeschirrspülmaschine,
Fig. 3
zeigt eine Ausführungsform eines Filterelements, wie es in einer Transportgeschirrspülmaschine gemäß der Erfindung eingesetzt ist,
Fig. 4
zeigt eine teilweise Querschnittsansicht eines oberen Spülverteilers, der an eine Zuführleitung angeschlossen ist, wobei in dem oberen Spülverteiler ein Filterelement gemäß der vorliegenden Erfindung, wie es in Fig. 3 gezeigt ist, angeordnet ist, und
Fig. 5
zeigt eine Draufsicht auf das in den Fig. 4 und 5 gezeigte Filterelement auf die Seite des Filterelements, das der Einlauföffnung des Spülverteilers zugewandt ist.
These and other features and advantages of the invention are illustrated by the following drawings, which show a particularly preferred embodiment of the transport dishwasher and the filter element or the flushing distributor with such a filter element:
1
shows schematically and in a perspective view a wash zone of a conveyor dishwasher according to the invention with two wash distributors to which several wash arms are connected,
2
shows schematically and in a partial sectional view the 1 shown embodiment of the conveyor dishwasher according to the invention,
3
shows an embodiment of a filter element as used in a conveyor dishwasher according to the invention,
4
Fig. 12 shows a partial cross-sectional view of an upper flush manifold connected to a supply line, in which upper flush manifold a filter element according to the present invention as shown in Fig 3 is shown, is arranged, and
figure 5
shows a plan view of the in the 4 and 5 filter element shown on the side of the filter element that faces the inlet opening of the flushing manifold.

Fig. 1 zeigt schematisch und in einer perspektivischen Ansicht eine Spülzone 100 einer Ausführungsform einer erfindungsgemäßen Transportgeschirrspülmaschine 10. Geschirr oder zu reinigende Spülgut wird in Transportrichtung A durch die Spülzone 100 bewegt, beispielsweise mittels eines Transportbandes, das jedoch zur Verdeutlichung der anderen Bauteile nicht gezeigt ist. 1 shows schematically and in a perspective view a washing zone 100 of an embodiment of a conveyor dishwasher 10 according to the invention. Dishes or items to be washed are moved in the transport direction A through the washing zone 100, for example by means of a conveyor belt, which is not shown to clarify the other components.

Die Transportgeschirrspülmaschine 10 umfasst mehrere Spülzonen, zur Verdeutlichung wurde jedoch in Fig. 1 lediglich eine Spülzone 100 dargestellt, auch wurde auf die Darstellung diverser anderer Elemente, wie beispielsweise auf die Darstellung des Transportbandes, Führungsvorrichtungen hierfür, Anschlussvorrichtungen und -bereiche für weitere Spülzonen und weitere Elemente, verzichtet, um die wesentlichen Elemente deutlicher zu zeigen.The conveyor dishwasher 10 includes several wash zones, but for the sake of clarity in 1 Only one rinsing zone 100 is shown, and various other elements, such as the conveyor belt, guide devices for this, connecting devices and areas for further rinsing zones and further elements, have also been omitted in order to show the essential elements more clearly.

Die Transportgeschirrspülmaschine 10 umfasst einen Tank 200, der der in Fig. 1 gezeigten Spülzone 100 zugeordnet ist und der eine Spülflüssigkeit aufnehmen kann. Ferner umfasst die Transportgeschirrspülmaschine 10 zwei Spülverteiler 400, einen oberen Spülverteiler 402 einen unteren Spülverteiler 404, die über eine Zuführleitung 300 mit dem Tank 200 verbunden sind.The conveyor dishwasher 10 includes a tank 200, which is the 1 shown rinsing zone 100 is associated and can accommodate a rinsing liquid. Furthermore, the conveyor dishwasher 10 comprises two flushing distributors 400, an upper flushing distributor 402 and a lower flushing distributor 404, which are connected to the tank 200 via a supply line 300.

Jeder der Spülverteiler 400 versorgt mehrere Spülarme 500, wobei in der perspektivischen Ansicht in Fig. 1 nur die Spülarme 500 sichtbar sind, die von dem unteren Spülverteiler 404 versorgt werden. Jeder der Spülarme 500 wiederum weist mehrere Abgabeelemente 510 auf, die bei dieser Ausführungsform jeweils als Abgabedüsen ausgebildet sind. Die Abgabeelemente 510 sind bei dieser Ausdrucksform auf den oberen Seiten der Spülarme 500, die von dem unteren Spülverteiler 404 versorgt werden, angeordnet, sodass eine Spülflüssigkeit von den im unteren Bereich der Spülzone 100 angeordneten Spülarmen 500 nach oben abgegeben werden kann, so dass Geschirr oder Spülgut, das in Transportrichtung A durch die Spülzone 100 transportiert wird, von unten mit Spülflüssigkeit beaufschlagt werden kann. Bei den (nicht gezeigten) Spülarmen, die von dem oberen Spülverteiler 402 versorgt werden, sind die Abgabeelemente auf einer unteren Seite der Spülarme angeordnet, sodass eine Spülflüssigkeit nach unten auf das Geschirr oder das Spülgut abgegeben werden kann. Das Spülgut wird dadurch von beiden Seiten, oben und unten, zuverlässig behandelt bzw. gespült.Each of the flushing distributors 400 supplies several flushing arms 500, with the perspective view in 1 only the rinse arms 500 fed by the lower rinse manifold 404 are visible. Each of the rinsing arms 500 in turn has a plurality of dispensing elements 510 which, in this embodiment, are each designed as dispensing nozzles. The dispensing elements 510 are in this expression on the upper sides of the spray arms 500, the of the lower rinsing distributor 404, so that a rinsing liquid can be discharged upwards from the rinsing arms 500 arranged in the lower region of the rinsing zone 100, so that dishes or items to be washed that are transported through the rinsing zone 100 in transport direction A are supplied with rinsing liquid from below can be charged. In the wash arms (not shown) served by the upper wash manifold 402, the dispensing members are located on a lower side of the wash arms so that wash liquid can be dispensed down onto the dishes or items to be washed. The items to be washed are thus treated and washed reliably from both sides, above and below.

Fig. 2 zeigt schematisch in einer teilweisen Schnittdarstellung die in Fig. 1 gezeigte Spülzone 100 der Ausführungsform der Transportgeschirrspülmaschine 10. Sehr deutlich sieht man in Fig. 2 den Tank 200, der über eine Zuführleitung 300 mit den Spülverteilern 400, sowohl mit dem oberen Spülverteiler 402 als auch mit dem unteren Spülverteiler 404, verbunden ist, sodass eine in dem Tank 200 befindliche Spülflüssigkeit mittels einer Pumpe 220 aus dem Tank 200 und durch die Zuführleitung 300 in die Spülverteiler 400 (402 und 404) gepumpt werden kann. 2 shows schematically in a partial sectional view the in 1 shown rinsing zone 100 of the embodiment of the conveyor dishwasher 10. One sees very clearly in FIG 2 the tank 200, which is connected via a supply line 300 to the rinsing manifolds 400, both to the upper rinsing manifold 402 and to the lower rinsing manifold 404, so that a rinsing liquid in the tank 200 is pumped out of the tank 200 by means of a pump 220 and through the Supply line 300 can be pumped into flushing manifolds 400 (402 and 404).

An dem oberen Spülverteiler 402 sind bei dieser Ausführungsform insgesamt fünf Spülarme angeschlossen, während an dem unteren Spülverteiler 404 bei dieser Ausführungsform nur drei Spülarme angeschlossen sind.In this embodiment, a total of five rinsing arms are connected to the upper rinsing manifold 402, while only three rinsing arms are connected to the lower rinsing manifold 404 in this embodiment.

Jeder der Spülverteiler 402, 404 weist ein Filterelement 600 auf, das sich nur über die in Transportrichtung A jeweils letzte Verbindungsöffnung 420' erstreckt, während die weiteren Verbindungsöffnungen 420, im oberen Spülverteiler insgesamt vier verbleibende Verbindungsöffnungen 420 und im unteren Spülverteiler insgesamt zwei verbleibende Verbindungsöffnungen 420, nicht im Bereich der Längserstreckung, in Richtung der Transportrichtung A, des Filterelements 600 liegen.Each of the flushing distributors 402, 404 has a filter element 600, which only extends across the last connection opening 420' in transport direction A, while the other connection openings 420, a total of four remaining connection openings 420 in the upper flushing distributor and a total of two remaining connection openings 420 in the lower flushing distributor , do not lie in the area of the longitudinal extension, in the direction of transport direction A, of the filter element 600 .

Fig. 3 zeigt eine perspektivische Ansicht eines erfindungsgemäßen Filterelements 600, wie es in einer Transportgeschirrspülmaschine 10 gemäß der Erfindung, insbesondere in einer Transportgeschirrspülmaschine, wie sie in den Fig. 1 und 2 dargestellt ist, verwendet werden kann. 3 shows a perspective view of a filter element 600 according to the invention, as in a conveyor dishwasher 10 according to the invention, in particular in a conveyor dishwasher, as in FIGS 1 and 2 shown can be used.

Bei dem in Fig. 3 dargestellten Filterelement 600 handelt es sich um einen Spaltfilter mit einer Überstromfunktion, der sich in seiner Längsrichtung von seinem einen Ende 602, das in eingebautem Zustand innerhalb des Spülverteilers der Einlauföffnung des Spülverteilers zugewandt ist (siehe insbesondere Fig. 2), zu seinem anderen Ende 604 erstreckt, in eingebautem Zustand von seinem einen Ende 602 in einer Richtung entgegen der Transportrichtung A und über die in Transportrichtung A letzte oder hinterste Verbindungsöffnung (420', siehe Fig. 2) des Spülverteilers 400, 402, 404 zu seinem anderen Ende 604.At the in 3 The filter element 600 shown is an edge filter with an overflow function, which extends in its longitudinal direction from its one end 602, which is in installed state within the flushing manifold faces the inlet opening of the flushing manifold (see in particular 2 ), extends to its other end 604, in the installed state from its one end 602 in a direction opposite to the transport direction A and via the last or rearmost connection opening (420', see transport direction A). 2 ) of the flushing manifold 400, 402, 404 to its other end 604.

An seinem der Einlauföffnung zugewandten Ende 602 umfasst das Filterelement 600 ein Befestigungselement 660, das auch als Positionierelement dient, und an seinem der Einlauföffnung abgewandten Ende 604 umfasst das Filterelement 600 ein Positionierelement 640. Das Befestigungselement 660 und das Positionierelement 640 haben bei dieser Ausführungsform einen identischen Außenradius, sodass das Filterelement 600 gut in einem zylinderförmigen Spülverteiler 400 befestigt werden kann, siehe insbesondere Fig. 4.At its end 602 facing the inlet opening, the filter element 600 comprises a fastening element 660, which also serves as a positioning element, and at its end 604 facing away from the inlet opening, the filter element 600 comprises a positioning element 640. The fastening element 660 and the positioning element 640 have an identical one in this embodiment Outer radius so that the filter element 600 can be fixed well in a cylindrical flushing manifold 400, see in particular 4 .

Das Filterelement 600 hat bei dieser Ausführungsform einen kreisförmigen Querschnitt und ist konisch zulaufend, in diesem Falle kegelstumpfförmig, ausgebildet, wobei der Durchmesser des kreisförmigen Querschnitts von seinem der Einlauföffnung zugewandten Ende 602 in Richtung auf das der Einlauföffnung abgewandten Ende 604 kontinuierlich abnimmt.In this embodiment, the filter element 600 has a circular cross section and is tapered, in this case frustoconical, with the diameter of the circular cross section decreasing continuously from its end 602 facing the inlet opening in the direction of the end 604 facing away from the inlet opening.

Das Filterelement 600 weist daher an seinem im eingebauten Zustand der Einlauföffnung (410) zugewandten Ende 602 eine Eingangsöffnung 612 auf, während es an seinem anderen Ende 604 eine Ausgangsöffnung (604, siehe Fig. 5) aufweist, so das auch eine Überströmfunktion sichergestellt ist, die eine Selbstreinigung des Filterelement 600 ermöglicht.The filter element 600 therefore has an inlet opening 612 at its end 602 facing the inlet opening (410) in the installed state, while at its other end 604 it has an outlet opening (604, see FIG figure 5 ) has, so that an overflow function is also ensured, which enables self-cleaning of the filter element 600.

Fig. 4 zeigt eine teilweise Querschnittsansicht eines oberen Spülverteilers 402, der an eine Zuführleitung 300 angeschlossen ist. Fig. 4 zeigt sehr deutlich die Positionierung des Filterelements 600 bei dieser bevorzugten Ausführungsform, das sich von seinem einen Ende, das einer Einlauföffnung 410 des oberen Spülverteilers 402 zugewandt ist, in eine Richtung entgegen der Transportrichtung A bis über die in Transportrichtung A letzte oder hinterste Verbindungsöffnung 420' erstreckt. Das Filterelement 600 endet jedoch, in einer Richtung entgegen der Transportrichtung A, vor den weiteren Verbindungsöffnungen 420 des oberen Spülverteilers 402. 4 12 shows a partial cross-sectional view of an upper purge manifold 402 connected to a supply line 300. FIG. 4 shows very clearly the positioning of the filter element 600 in this preferred embodiment, which extends from its one end, which faces an inlet opening 410 of the upper flushing distributor 402, in a direction opposite to the transport direction A to beyond the last or rearmost connection opening 420' in the transport direction A extends. However, the filter element 600 ends, in a direction opposite to the transport direction A, in front of the further connection openings 420 of the upper flushing distributor 402.

Das Filterelement 600 umfasst bei dieser Ausführungsform ein Positionierelement 640, dass in einem in Transportrichtung A vorderen Bereich des Filterelements angebracht ist, das von der Einlauföffnung 410 des Spülverteilers am weitesten entfernt ist. An seinem anderen Ende, dem in Transportrichtung A hinteren Ende, umfasst das Filterelement 600 ein weiteres ringförmiges Element, das Befestigungselement 660, das ebenfalls im wesentlichen ringförmig ausgebildet ist. Das Befestigungselement 660 und das Positionierelement 640 haben einen identischen Außendurchmesser, sodass das Filterelement 600 zuverlässig in dem zylinderförmigen oberen Spülverteiler 402 angeordnet ist. Das ringförmige Positionierelement 640 ist bei dieser Ausführungsform als ringförmige Platte ausgebildet, die keine Öffnungen aufweist, sodass keinerlei Flüssigkeit von einem Bereich innerhalb des oberen Spülverteilers 402, der in Transportrichtung A vor dem ringförmigen Positionselement 640 liegt, in einem Bereich strömen kann, der in Transportrichtung A hinter dem Positionselement 640 liegt und der sich außerhalb der, bei dieser Ausführungsform konisch ausgebildeten, Filterfläche des Filterelement 600 befindet, ohne dass die Flüssigkeit durch die Filterfläche des Filterelement 600 fließen muss. Dies kann gelegentlich oder teilweise dadurch entstehen, dass Turbulenzen entstehen, gleichwohl die Hauptströmungsrichtung der Spülflüssigkeit bei den Fig. 4 gezeigten Ausführungsform im Wesentlichen entgegengesetzt zu der Transportrichtung A verläuft.In this embodiment, the filter element 600 comprises a positioning element 640 which is attached in a front area of the filter element in the transport direction A, which is furthest away from the inlet opening 410 of the flushing distributor. at its other end, the rear end in transport direction A, the filter element 600 comprises a further ring-shaped element, the fastening element 660, which is also essentially ring-shaped. The fastening element 660 and the positioning element 640 have an identical outer diameter, so that the filter element 600 is reliably arranged in the cylindrical upper flushing manifold 402 . In this embodiment, the ring-shaped positioning element 640 is designed as a ring-shaped plate that has no openings, so that no liquid whatsoever can flow from an area within the upper flushing manifold 402, which lies in front of the ring-shaped positioning element 640 in the transport direction A, into an area that is in the transport direction A is located behind the position element 640 and which is located outside the filter surface of the filter element 600, which is conical in this embodiment, without the liquid having to flow through the filter surface of the filter element 600. This can occasionally or partly arise from the fact that turbulence arises, although the main direction of flow of the rinsing liquid in the 4 shown embodiment runs essentially opposite to the transport direction A.

Die Einlauföffnung 410 und das Filterelement 600 sind dabei so ausgebildet und dimensioniert, dass sämtliche Flüssigkeit, die von der Zuführleitung 300 in die Einlauföffnung 410 des Spülverteilers strömt, in den Innenbereich des Filterelements 610 strömt, mit andern Worten, in einen radial inneren Bereich des Filterelements 600. Damit wird sichergestellt, dass keinerlei Flüssigkeit durch die in Transportrichtung A letzte oder hinterste Verbindungsöffnung 420' strömen kann, ohne dass sie die Filterflächen des Filterelement 600 passiert.The inlet opening 410 and the filter element 600 are designed and dimensioned in such a way that all liquid that flows from the supply line 300 into the inlet opening 410 of the flushing distributor flows into the inner area of the filter element 610, in other words, into a radially inner area of the filter element 600. This ensures that no liquid whatsoever can flow through the last or rearmost connection opening 420′ in transport direction A without passing through the filter surfaces of the filter element 600.

Fig. 5 zeigt eine Draufsicht auf das in den Fig. 3 und 4 gezeigte Filterelement 600 von der, im eingebauten Zustand, der Einlauföffnung 410 zugewandten Seite, sowie eine Teilvergrößerung des mit einem Kreis gekennzeichneten Bereichs Z. figure 5 shows a plan view of the in the 3 and 4 Filter element 600 shown from the side facing inlet opening 410 when installed, as well as a partial enlargement of area Z marked with a circle.

Sehr gut sieht man in Fig. 5 das ringförmig ausgebildete Befestigungselement 660 sowie die Struktur des Filterelements 600, das als Spaltfilter mit einer Vielzahl von Spalten 620 ausgebildet ist. Wie insbesondere in der Vergrößerung in Fig. 5 ersichtlich, haben die Spalte 620 eine konstante Spaltbreite x, wobei die Spaltbreite sowohl über die Längserstreckung jedes Einzelspalts 620 konstant bleibt als auch im Vergleich zwischen der Vielzahl der Einzelspalte konstant ist.You can see very well in figure 5 the ring-shaped fastening element 660 and the structure of the filter element 600, which is designed as an edge filter with a plurality of gaps 620. As in particular in the enlargement in figure 5 As can be seen, the gaps 620 have a constant gap width x, the gap width remaining constant over the longitudinal extension of each individual gap 620 and being constant in comparison between the plurality of individual gaps.

Bei einer anderen Ausführungsform ist es jedoch auch möglich, Spalte vorzusehen, die eine Spaltbreite aufweisen, die in Längsrichtung bzw. in Strömungsrichtung, also in einer Richtung entgegengesetzt zur Transportrichtung A, zunimmt, bevorzugt kontinuierlich zunimmt.In another embodiment, however, it is also possible to provide gaps that have a gap width that increases, preferably continuously increases, in the longitudinal direction or in the direction of flow, ie in a direction opposite to the transport direction A.

Diese und weitere in der vorstehenden Beschreibung, den Ansprüchen und der Zeichnung offenbarten Merkmale können sowohl einzeln als auch in beliebiger Kombination für die Ausführung der Erfindung in ihren verschiedenen Ausgestaltungen von Bedeutung sein.These and other features disclosed in the above description, the claims and the drawing can be important both individually and in any combination for the implementation of the invention in its various configurations.

Claims (13)

  1. Transport dishwasher (10) with at least one dishwashing zone (100), which is designed so that the dishes may be moved in a transport direction (A) through the at least one dishwashing zone (100), wherein the transport dishwasher (10) comprises:
    - a tank (200) for receiving a dishwashing liquid,
    - multiple spray arms (500) each having at least one dispensing element for dispensing dishwashing liquid into the at least one dishwashing zone (100), wherein the spray arms (500) are arranged in the dishwashing zone (100) perpendicular to the transport direction (A) and one after one another in the transport direction (A),
    - a spray arm manifold (400, 402, 404) for supplying the multiple spray arms (500) with dishwashing liquid, wherein the spray arm manifold (400, 402, 404) is connected to the tank (200) via a supply line (300) and comprises multiple connection openings (420, 420'), wherein each of the multiple spray arms (500) is connected to one of the connection openings (420, 420') so that dishwashing liquid may be pumped out of the tank (200) via the supply line (300) into the spray arm manifold (400, 402, 404) and from the spray arm manifold (400, 402, 404) via the connection openings (420, 420') into the multiple spray arms (500),
    wherein the supply line (300) is connected to an inlet opening (410) of the spray arm manifold (400, 402, 404), wherein the inlet opening (410) is positioned, in the transport direction (A), in an area of the spray arm manifold (400, 402, 404) which lies, in the transport direction (A), behind the last or rearmost connection opening (420') of the spray arm manifold (400, 402, 404),
    characterized in that
    the spray arm manifold (400, 402, 404) has a filter element (600) which is arranged inside of the spray arm manifold (400, 402, 404) such that it extends in a direction opposite to the transport direction (A) from its one end (602) which faces the inlet opening (410) of the spray arm manifold (400, 402, 404) at least up to the last or rearmost connection opening (420') of the spray arm manifold (400) in transport direction (A), but does not extend past the first or frontmost connection of the spray arm manifold (400, 402, 404) in the transport direction (A),
    wherein the filter element (600) is designed such that it functions as an overflow filter, so that the dirt or the particles retained by the filter element (600) may be discharged via the spray arms which lie in a front area in the transport direction (A).
  2. Transport dishwasher (10) according to claim 1, characterized in that the spray arm manifold (400, 402, 404) is designed as tubular, in particular, conically tapering, or cylindrical, wherein it has a longitudinal axis which extends parallel to the transport direction (A).
  3. Transport dishwasher (10) according to claim 1 or 2, characterized in that the filter element (600) is designed as tubular, in particular, conically tapering, or cylindrical, wherein the filter element has a longitudinal axis which extends parallel to a longitudinal direction or a longitudinal axis of the spray arm manifold (400, 402, 404) and/or parallel to the transport direction (A),
    wherein the filter element (600) preferably has a closed shape in a cross sectional direction perpendicular to the transport direction (A), in particular a circular shape, an oval shape, or a rectangular or square shape.
  4. Transport dishwasher (10) according to one of the preceding claims, characterized in that the filter element (600) is designed as tubular or cylindrical, wherein the filter element (600) has a longitudinal axis and a side wall and two end faces, wherein the side wall is provided at least in some areas, preferably across the entire area of the side wall, with filter openings or sieve openings, and wherein at least one end face, preferably both end faces, is/are designed to be partially or completely open or is/are provided with an opening.
  5. Transport dishwasher (10) according to one of claims 1 to 3, characterized in that the filter element (600) is designed to be cylindrical or frustoconical, wherein a longitudinal axis of the cylindrical or frustoconical filter element (600) extends parallel to a longitudinal axis of the spray arm manifold (400, 402, 404) and/or parallel to the transport direction (A).
  6. Transport dishwasher (10) according to one of the preceding claims, characterized in that the filter element (600) is arranged in the spray arm manifold (400, 402, 404) such that it contacts the inlet opening (410) of the spray arm manifold (400) with one end.
  7. Transport dishwasher (10) according to one of the preceding claims, characterized in that a cross sectional area of the filter element (600) is so large in its rear area in the transport direction (A) that it completely covers a cross sectional area of the inlet opening (410) of the spray arm manifold (400, 402, 404).
  8. Transport dishwasher according to one of the preceding claims, characterized in that the filter element (600) extends from the area of the spray arm manifold, in which the inlet opening is positioned, or from the rear area, in the transport direction (A), of the spray arm manifold (400, 402, 404), only past the last or rearmost connection opening (420') of the spray arm manifold (400, 402, 404) in the transport direction (A) or only past the last or rearmost two or the last or rearmost three connection openings in the transport direction (A).
  9. Transport dishwasher (10) according to one of the preceding claims, characterized in that the filter element (600) is a screen filter,
    wherein the filter element (600) preferably has a longitudinal axis which extends parallel to the longitudinal axis of the spray arm manifold (400, 402, 404) and/or parallel to the transport direction (A).
  10. Transport dishwasher (10) according to claim 9, characterized in that the filter element (600) is designed as tubular, in particular frustoconical, and has a plurality of slots (620) across its circumference, which slots extend in the longitudinal direction of the filter element (600).
  11. Transport dishwasher (10) according to claim 9 or 10, characterized in that the slot width of a slot (620) of the filter element (600) is constant in the longitudinal extension of the filter element (600), wherein preferably all slots (620) of the filter element (600) are designed with an identical slot width,
    or
    characterized in that the slot width of a slot (620) of the filter element (600) increases in a longitudinal extension of the filter element (600) in a direction opposite to the transport direction (A), in particularly continuously increases, wherein preferably all slots (620) of the filter element (600) increase in a direction opposite to the transport direction (A).
  12. Transport dishwasher (10) according to one of the preceding claims, characterized in that the filter element (600) is designed as tubular, wherein the cross sectional area of the filter element (600) decreases in its cross section perpendicular to the transport direction (A) and/or the diameter and/or the edge length of a cross sectional area of the filter element (600) perpendicular to the transport direction (A) decreases in a direction opposite to the transport direction (A), preferably continuously decreases.
  13. Transport dishwasher (10) according to one of the preceding claims, characterized in that the filter element (600) comprises a positioning element (640), preferably in the form of a centering ring,
    wherein the positioning element (640) is preferably arranged in a front area, in the transport direction (A), wherein the positioning element (640) is further preferably applied on an end of the filter element (600) which is farthest from the inlet opening (410) of the spray arm manifold (400, 402, 404).
EP20205220.5A 2019-11-04 2020-11-02 Transport dishwasher Active EP3815595B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019129605.6A DE102019129605B4 (en) 2019-11-04 2019-11-04 TRANSPORT DISHWASHER

Publications (2)

Publication Number Publication Date
EP3815595A1 EP3815595A1 (en) 2021-05-05
EP3815595B1 true EP3815595B1 (en) 2023-06-28

Family

ID=73059426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20205220.5A Active EP3815595B1 (en) 2019-11-04 2020-11-02 Transport dishwasher

Country Status (2)

Country Link
EP (1) EP3815595B1 (en)
DE (1) DE102019129605B4 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2332738A1 (en) * 1975-11-28 1977-06-24 Bonnet Ets Tunnel type dish washing machine - with floating waste discharged through overflow by agitation of water in tank maintained at preset level
US4657188A (en) * 1984-09-17 1987-04-14 Hobart Corporation Spray system for a dishwashing machine
DE102005038433A1 (en) * 2005-08-12 2007-02-15 Premark Feg L.L.C. (N.D.Ges.D. Staates Delaware), Wilmington Transport dishwasher
WO2008100741A1 (en) * 2007-02-12 2008-08-21 Premark Feg L.L.C. Wash arm assembly attachment for a warewasher
US9962059B2 (en) 2014-05-08 2018-05-08 Illinois Tool Works Inc. Warewasher wash arm filter arrangement

Also Published As

Publication number Publication date
DE102019129605A1 (en) 2021-05-06
DE102019129605B4 (en) 2022-01-27
EP3815595A1 (en) 2021-05-05

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