EP2252191B1 - Procédé d'auto-nettoyage d'un lave-vaisselle à avancement automatique et lave-vaisselle à avancement automatique correspondant - Google Patents

Procédé d'auto-nettoyage d'un lave-vaisselle à avancement automatique et lave-vaisselle à avancement automatique correspondant Download PDF

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Publication number
EP2252191B1
EP2252191B1 EP08871607A EP08871607A EP2252191B1 EP 2252191 B1 EP2252191 B1 EP 2252191B1 EP 08871607 A EP08871607 A EP 08871607A EP 08871607 A EP08871607 A EP 08871607A EP 2252191 B1 EP2252191 B1 EP 2252191B1
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EP
European Patent Office
Prior art keywords
storage tank
cleaning
rinsing
zone
storage tanks
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EP08871607A
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German (de)
English (en)
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EP2252191A1 (fr
Inventor
Denis Lehmann
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Meiko Maschinenbau GmbH and Co KG
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Meiko Maschinenbau GmbH and Co KG
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/241—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors the dishes moving in a horizontal plane
    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0057—Cleaning of machines parts, e.g. removal of deposits like lime scale or proteins from piping or tub
    • 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
    • A47L15/4208—Arrangements to prevent clogging of the filters, e.g. self-cleaning

Definitions

  • the invention relates to a method for self-cleaning a cleaning machine, in particular a continuous dishwasher, for cleaning, such as dishes
  • Cleaning machines in particular continuous dishwashers, which are used, for example, for cleaning the costs incurred in catering, to be cleaned dishes, Tray and container parts are known. While domestic dishwashing devices generally run through a program sequence with the successive cleaning steps in the case of a stationary arrangement of the dishes and cutlery items to be cleaned, the treatment zones are arranged successively in continuous dishwashing machines and the items to be cleaned or the item to be cleaned are removed from the feed area by means of suitably designed conveying means (Inlet area) transported by successive to be traversed treatment zones to the removal area (outlet area).
  • Inlet area conveying means transported by successive to be traversed treatment zones to the removal area (outlet area).
  • Conventional continuous-flow dishwashers generally have four different treatment zones between the inlet region and the outlet region.
  • a conveyor promotes the items to be washed through the individual treatment zones.
  • This is a pre-cleaning zone, at least one cleaning zone, a final rinse zone and a drying zone.
  • the pre-cleaning zone easily adhering dirt is removed from the material to be cleaned.
  • rinsing liquid is sucked by a pump from the storage tank associated with this treatment zone and sprayed over the material to be cleaned by appropriately trained nozzles. Subsequently, the rinsing liquid flows back into the storage tank and is there again by a circulation pump aspirated and introduced into a circulation circuit.
  • the storage tank is covered by sieves to keep larger dirt particles from the rinsing liquid.
  • the at least one cleaning zone which adjoins the pre-cleaning zone, dirt particles adhering to the items to be cleaned are removed by means of a usually alkaline rinsing liquid.
  • the heated rinsing liquid is sucked by a further circulating pump from the storage tank associated with the storage tank and sprayed over the items to be washed by means of suitably positioned and oriented nozzles. Subsequently, the rinsing liquid flows back into the corresponding storage tank and is sucked in again by the circulation pump.
  • the storage tank is covered by sieves in order to retain coarser dirt particles from the rinsing liquid.
  • the alkaline rinsing liquid which wets the surface of the ware, rinsed off together with any leftovers from the surface of the ware by means of hot fresh water to which a rinse aid is usually added.
  • the fresh water is collected after this treatment step again in one of these treatment zone associated storage tank and sucked with a treatment zone associated circulating pump and distributed by the actual fresh water rinsing by means of nozzles on the dishes (pump clearing). Subsequently, the rinsing liquid flows back into the storage tank and is sucked in there again by the circulation pump.
  • the volume of water supplied to the described dishwasher in the final rinse zone overflows, only by the action of gravity, between the storage tanks of the individual zones, from zone to zone, thus renewing the contents of each of the storage tanks.
  • the first tank of the machine pre-wash zone
  • there is an overflow which directs the excess water to the sewer system.
  • Each storage tank comprises a suitable device, such as a manually operated drain valve, which serves to empty each storage tank.
  • a dishwasher which, in contrast to the embodiment described above, has filter means in each treatment zone with which the cleaning fluid contained in the respective storage tank is continuously filtered.
  • This design of a dishwasher has additional pumps between the individual Storage tanks of the respective zones, so that the water which is supplied to the dishwasher in the rinse, controlled and can be selectively pumped into the storage tanks of other treatment zones.
  • each of the storage tanks of this machine has its own electrically powered means for draining the tank, ie a pump.
  • the above-described dishwashers are usually emptied and thoroughly cleaned. This is necessary to allow hygienic operation of the dishwasher. This cleaning is usually done in such a way that the doors or flaps fitted to each treatment zone are opened. Then the storage tank of each zone is emptied by the means provided, for example with the manual drain valves or, where appropriate, the pumps. Furthermore, all screens are removed from the tanks and cleaned outside the machine manually using water. The interior of the individual treatment zones is usually sprayed by hand with the aid of a hose with a spray device with water and rinsed out.
  • the water, which is used for this purpose, is usually tap water, optionally heated tap water, without the addition of detergents.
  • Solutions are known in which attempts are made by additional apparatus measures to eliminate the disadvantages outlined above or at least alleviate them.
  • a solution is known, according to which a nozzle system is arranged on the ceiling of each storage tank, which is fed by a separate pump.
  • the separate pump is supplied from the storage tank of the pump flush. This water is still relatively clean at the end of a working day.
  • the water from the storage tank of the pump clearing can now be used to spout the covers of the storage tanks. The dripping water is then no longer collected, but runs into the sewage system.
  • the disadvantage of this procedure lies in the fact that the amount of water in the storage tank of the pump clearing is very limited.
  • the storage tank of the pump clearing usually has only a volume of about 30 1, so that by the single use of this amount, the cleaning effect is extremely limited.
  • Solutions are also known to mitigate by additional procedural measures, the disadvantages described above.
  • the tanks of the machine are refilled, heated and enriched with cleaner.
  • the circulation pumps of all tanks are restarted and the inside of the machine is sprayed with clean washing liquor.
  • the disadvantage of this approach is that a very high level of additional water, cleaning and energy consumption is required to make the entire machine operational again at the end of an operating cycle.
  • the filling and heating of the storage tanks takes a relatively long time.
  • this zone In the area of the pre-cleaning zone, the cleaning effect with this method will be insufficient, because on the one hand by the operation here most Dirt accumulates and on the other hand, this zone usually has neither a means for heating nor a way to dosing of cleaners.
  • DE 41 00 164 C1 refers to a method for rinsing dinnerware in large plants.
  • a process for rinsing dinnerware in large-scale systems is disclosed in several successive process steps, wherein the dinnerware passes through several rinse zones in which the rinse water added, in some cases with surfactants, is fed cascade-like after passing through a rinsing zone in countercurrent to the respectively preceding rinse zone as rinse water becomes.
  • the pre-clearing only surfactant-free, heated fresh water is supplied.
  • the wastewater withdrawn from the pre-evacuation zone connected upstream is fed directly to the wastewater line to the oil and grease separation stage and to the wastewater withdrawn from the rinse zone located at the end of the cascade.
  • the object of the present invention is to provide a method in which automatic automatic cleaning of a continuous dishwasher is possible at the end of an operating period, such as a working day. Furthermore, the solution proposed by the invention is based on the object of designing an apparatus of a continuous-flow dishwasher so that the described method for the automatic automatic cleaning of the continuous-flow dishwasher can be carried out there.
  • the continuous-flow dishwasher proposed according to the invention comprises a filter device on each of the storage tanks and has, in addition to the circulating pumps for carrying out the actual rinsing process, further pumps between the individual ones Storage tanks of the respective treatment zones for the items to be washed.
  • the water which is supplied to the continuous dishwasher for example, within the pump clearing, be controlled and pumped specifically into the storage tank of the respective preceding cleaning zone.
  • the inventively embodied continuous-flow dishwasher in which a filter device is provided in each cleaning zone, with which the cleaning fluid, which is located in the respective storage tank, can be continuously filtered, advantageously has the property that the cleaning fluid in the individual storage tanks also on End of an operating cycle is still relatively clean.
  • the first tank for example the storage tank of the pre-rinse zone (pre-clearing)
  • the degree of pollution decreases.
  • the relatively cleanest water is present, which in the described case of continuous fine filtering is virtually free of suspended particles.
  • the last tank such as the storage tank of the pump rinsing zone, with empty rinsed fine filter is ready.
  • the last storage tank is filled with fresh water.
  • This water can be preheated and come, for example, from an on-site network or from a built-in boiler of the machine, and be enriched with detergent or rinse aid.
  • a rinse aid brings the particular advantage that at the end of the entire process sequence, all inner surfaces of the continuous dishwasher are sprayed with rinse solution, whereby the rinsing of dirt is particularly favored.
  • Dirt residues which are located in the respective treatment zone, are rinsed from all inner surfaces by means of the existing rinsing systems and nozzles and collected in the fine filter. After this cleaning process, the process cycle starts again.
  • the storage tanks are successively emptied as described above; at the same time, the filters of the individual storage tanks are rinsed and each tank is again filled with clean cleaning solution from the next tank.
  • the storage tank of the pump clearing is no longer filled. Its insides are wetted by the fresh water and therefore sufficiently well cleaned.
  • the still filled with liquid storage tanks are rinsed again as described above. This cycle is now repeated again, with the exception that now also the second last tank is not refilled.
  • the filter devices on the emptying devices can be removed from the storage tanks and poured out by hand.
  • the advantages of the method proposed according to the invention, in particular of the automated method lie in the extremely economical handling of the resources, be it fresh water, be it heating energy, be it cleaning agents, because they are usefully used several times.
  • a further advantage of the method proposed according to the invention is the fact that heated rinsing liquid with cleaning agent is also introduced into the pre-rinsing zone (pre-evacuation) by means of the described cascade principle for self-cleaning. In the rinsing mode, this zone runs cold and without detergent addition, on the other hand, especially with a strong pollution expected.
  • each of the cleaning zones of the dishwasher is equipped with additional nozzles. These are designed so that all inner surfaces of the respective zones can be sprayed with cleaning liquid.
  • the nozzle heads with their outlet openings are oriented or positioned accordingly.
  • the inner sides of the closed doors are acted upon in sufficient quantity with cleaning liquid through these nozzle heads.
  • These nozzle heads are either directly attached to the washing systems of the respective zone, or special nozzles or washing systems are installed in the individual cleaning zones, which reach and wet all inner surfaces.
  • the mentioned nozzle heads or nozzles or washing systems are supplied either directly from the respective built-circulation pump of the cleaning zone with cleaning directly from the built-circulation pump each of the cleaning zone with cleaning fluid, or there are special pumps that are controlled accordingly for the realization of the self-cleaning function.
  • the inner surfaces of the machine are smooth and formed without narrow gaps and corners to improve the cleaning result.
  • the ceiling of each storage tank is designed with a slope, so that all residues of the introduced in the automated cleaning cycle cleaning fluid drain well. Any existing Grobsiebsysteme and the bottoms of the storage tanks are designed so that all residual fluids are directed to each drain device.
  • the inner sides or rear sides of the doors are profiled, for example, with a herringbone pattern, whereby a damming of the liquid film forming on the surface is achieved and detached contaminants can be optimally washed away, without it after carrying out the inventive proposed automatic cleaning cycle 'manual intervention of a Operator required.
  • FIG. 1 is a schematically reproduced embodiment of a proposed inventions continuous flow dishwasher with a number of cleaning zones corresponding number of storage tanks to remove.
  • FIG. 1 is a section taken in the longitudinal direction of the inventively proposed continuous dishwasher.
  • the continuous dishwasher is shown without items to be cleaned, as the situation at the end of the rinsing operation after an operating period generally represents.
  • the storage tanks of individual rinse zones 2, 3 and 4 are filled with dirty cleaning fluid whose degree of soiling is different from each other.
  • a transport device 7 for the material to be cleaned is shown schematically.
  • the transport device 7 is shown in the illustration FIG. 1 exemplified as a conveyor chain. However, other variants of the transport device can also be used.
  • a transport direction, in which the material to be cleaned is conveyed during operation by the individual rinsing zones 2, 3, 4 of the continuous-flow dishwasher, is designated by reference numeral 8.
  • a pre-rinsing zone 2 with its at least one rinsing system 9 follows in the transport direction 8.
  • the main rinsing zone 2 is followed by a main washing zone 3 having at least one rinsing system 10 associated therewith.
  • a pump rinsing zone 4 which likewise has at least one rinsing system 11, adjoins the main washing zone 3.
  • the pump rinsing zone 4 is followed by a fresh water rinsing zone 5, which likewise has at least one rinsing system 12.
  • the inventively proposed method can also be carried out with a continuous dishwasher, the cleaning zones are constructed for the good to be cleaned in a different from the above list combination and / or number.
  • the individual cleaning zones 2, 3, 4 each have storage tanks 13 which are covered by coarse sieves 15, for example.
  • the coarse sieves 15 keep coarser impurities away from the cleaning fluid stored in each of the storage tanks 13.
  • Each of the storage tanks 13 is associated with a fine filter 16 and a pump 17 for rinsing the fine filter 16;
  • Each of the storage tanks 13 of the individual cleaning zones 2, 3, 4 likewise has an emptying device 18.
  • the circulation pumps 14, the individual cleaning zones 2, 3, 4 - are assigned - except the Frischwasserklar mecaniczone -.
  • Each of the above-mentioned cleaning zones 2, 3, 4 and 5 of the continuous dishwasher has at least one nozzle or a nozzle head, which is designed such that all inner surfaces of the respective cleaning zones 2, 3, 4 and 5 can be treated with cleaning liquid.
  • the nozzles or the nozzle heads are oriented so that no non-wetted surface sections remain.
  • the inner sides of the doors, which are in the closed state, via which the individual treatment zones are accessible from the outside, are wetted in sufficient quantity with cleaning liquid by the nozzles or the nozzle heads.
  • the nozzles or nozzle heads are either directly attached to the flushing systems 9, 10, 11 and 12 of the respective cleaning zones 2, 3, 4, 5, or special nozzles or flushing systems are installed in the cleaning zones 2, 3, 4 and 5, with which all inner surfaces of the respective cleaning zone can be sprayed.
  • nozzles or flushing systems are supplied either directly from the respective built-circulation pump 14 of the respective cleaning zone 2, 3, 4 and 5 with cleaning liquid, or there are special pumps for performing the self-cleaning provided.
  • the inner surfaces of the cleaning zones 2, 3, 4 and 5 of the continuous-flow dishwasher are preferably designed with a smooth surface, without narrow gaps and corners.
  • the ceiling of each of the storage tank 13 is designed in such a gradient that all remains of each sprayed cleaning liquid can drain well. Any existing Grobsiebsysteme 15 and the bottoms of the storage tank 13 are designed so that all possibly remaining in the storage tank 13 liquid residues are directed to each drain device.
  • the inner sides or rear sides of the doors 24 allowing access to the respective cleaning zones 2, 3, 4 and 5 are preferred profiled with a herringbone pattern. As a result, it is possible to achieve a damming up of the liquid film on these surfaces, so that loosened soiling can be washed off in an optimal manner in the direction of the tanks 13.
  • FIGS. 2a and 2 B Different stages of the sequence of the inventively proposed automated cleaning process can be seen in certain operating conditions.
  • the proposed method according to the invention runs cyclically; the individual steps within a cleaning cycle are indicated by the reference numerals 30 to 39.
  • Reference numeral 30 designates the starting situation at the end of an operating period, ie after the end of the purging operation. All storage tanks 13 of the individual rinse zones 2, 3, 4 and 5 are filled with used cleaning fluid 22. This is in the first zone, ie the pre-rinse zone 2, the strongest and in the zone 4, ie in the pump rinsing zone, least polluted. As a result of the fine filter 16 permanently in operation during operation of the continuous-flow dishwasher, the contamination of the cleaning fluid 22 at the end of the rinsing operation is relatively low. In the FIGS. 2a and 2 B For example, a high degree of contamination of the cleaning fluid 22 is characterized by a narrow hatching and a low degree of soiling of the cleaning fluid 22 by a further hatching.
  • Each of the storage tanks 13 of the pre-rinsing zone 2 of the main rinsing zone 3 and the fresh water or pump rinsing 4, 5 is associated with an emptying device 18.
  • the storage tank 13 of Pumpenklar Hughes- or Frischwasserklar Hugheszone 4, 5 can be filled by the filling device 21 with fresh water.
  • Each of the tanks 13 is assigned a pre-rinsing system 9 or rinsing system 10 and 11, wherein the cleaning fluid 22 present in the respective tanks 13 in different degrees of contamination is conveyed via circulating pumps 14 into the respective pre-rinsing 9 or rinsing systems 10 and 11. Furthermore, each of the storage tanks 13 has a coarse screen 15 (not shown) and a fine filter 16. The pumping of cleaning fluid 22 from one of the storage tanks 13 in a respective downstream storage tank 13 via pumps 17th
  • Reference numeral 31 identifies a first step of a cycle of the automated cleaning method proposed according to the invention.
  • the most polluted storage tank 13 of the pre-rinse zone 2 is completely emptied.
  • the fine filter 16 is backwashed by means of the pump 17 and passed the present in the fine filter 16 concentrate into the drain.
  • the storage tank 13 remaining cleaning fluid 22 is via the emptying device 18 if necessary, also discharged into the drain.
  • the fine filter 16 in the storage tank 13 of the main washing zone 3 is then backwashed, the concentrate is passed into the storage tank of the pre-rinsing zone 2.
  • the storage tank 13 of the main wash zone 3 is emptied and the storage tank 13, which is associated with the pre-wash zone 2, refilled.
  • the storage tank 13 which is associated with the pre-rinsing zone 2 there is thus cleaning fluid 22, which is heated and optionally enriched with cleaner, and has a lower degree of contamination identified by the further hatching. This is indicated by the stage 32.
  • step 33 the last seen in the transport direction 8 of the storage tank 13, such as the Pumpenklar Hugheszone 4 or the Frischwasserklar Hugheszone 5 associated storage tank 13 is filled with fresh water. This is done via the filling device 21.
  • This water can be preheated, for example, be taken from the on-site network or the built-in boiler of the continuous dishwasher; if necessary, it may be enriched with detergent or rinse aid.
  • the renewed cleaning liquid which is located in each of the cleaning zones 2, 3, 4 and 5 or each of these storage tanks 13, is then built in for a certain period of time, for example between 60 s and 120 s Pump 14 circulated.
  • This is indicated in the stage 34 by the cleaning fluid 22 emerging from the pre-rinsing system 9 or from the rinsing systems 10 and 11.
  • Dirt residues which are located in the respective zone 2, 3, 4 and 5, are rinsed by means of the existing rinsing systems 9, 10 and 11 and nozzles from all inner surfaces (eg the storage tank 13 and the inside of an access door) and in the fine filter 16 collected.
  • the storage tanks 13 are, as described above with reference to the method steps 31 and 32, drained one after the other, at the same time the individual fine filters 16 of the individual storage tanks 13 are rinsed, and each of the storage tanks 13 again receives a filling with cleaning fluid 22, which has a lower degree of contamination, from the - seen in the transport direction 8 - Subsequent storage tank 13, see process step 35.
  • the storage tank 13, which is associated with the Pumpenklar Hugheszone 4 and the Frischiganklar mecaniczone 5 is no longer filled. Whose insides are sufficiently well cleaned by the fresh water supplied in step 33, so that it requires no further purification step.
  • a subsequent method step 36 the cleaning fluid 22 of the storage tanks 13 of the pre-rinse zone 2 and the main washing zone 3 is again circulated and rinsed as described above. Thereafter, the pumping of the cleaning fluid 22 into a storage tank 13 of the preceding in the transport direction 8 zone occurs, with the deviation that now the storage tank 13 of the main wash zone 3 is not refilled according to process step 37. The pumping is repeated until at last only the storage tank 13, which is assigned to the pre-rinsing zone 2, is filled with cleaning fluid 22. This is finally circulated in step 38. In process step 39, the storage tank 13, which is assigned to the pre-rinsing zone 2, emptied, there is a final backwashing of the fine filter 16 and a complete emptying of the storage tank 13 of the pre-rinsing zone second
  • the Pumpenklar Hugheszone 4 and the Frischbergklar Hugheszone 5 is assigned (about 301 water) all storage tanks 13 and all fine filter 16 of the continuous dishwasher several times each with increasingly cleaner cleaning fluid 22 and fresh water completely cleaned. There remains only the filter device to remove the emptying devices 18 from the storage tank 13 and to clean by hand, so for example pour.
  • the first method step 31 can be repeated several times after the filling of the storage tank 13 of the pump rinsing zone 4 or the fresh water rinsing zone 5, before the further steps are followed by a successive emptying of all storage tanks 13 of the continuous rinse machine.
  • FIG. 3 It can be seen that by means of an independent nozzle head 23 mounted, for example, in a roof surface of one of the cleaning zones, inner sides of the access doors 24 can be wetted. As a result, even in the corners and edges accumulating dirt can be replaced early, so that it does not even caking and solidifies, but can be rinsed off in a timely manner.
  • the independent nozzle heads 23 may be designed to have, for example, a hemispherical nozzle head - as in FIG FIG. 3 shown - and the nozzles are introduced in this way, that wetting of the above the flushing systems 9, 10 and 11 lying sides of the cleaning zone, ie the ceiling and the inside of the door 24, always with cleaning fluid 22 can be swept.
  • FIG. 4 See section line AA, it can be seen that at the doors 24, which allow access to the individual cleaning zones, for example, an inclined profile, ie a profiling 25 - preferably in herringbone form - is arranged.
  • a profiling 25 - preferably in herringbone form - is arranged. This advantageously prevents the accumulation of dirt, promotes its drainage with constant wetting, in particular a round configuration of the bottom of the individual profiles of the profiling 25 prevents drainage of cleaning fluid or a caking or setting of impurities.
  • the profiling 25 is arranged on the inside, for example, of each of the doors 24 and may, for example, at an angle - as in FIG. 4 - run from 45 °. Of course, other angles of inclination can be selected.

Landscapes

  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (13)

  1. Procédé d'auto-nettoyage automatique d'un lave-vaisselle à avancement automatique présentant plusieurs réservoirs de stockage (13) avec au moins une zone de rinçage (2, 3), au moins une zone de rinçage final (4, 5), un dispositif de transport (7) pour le transport d'articles à nettoyer, un filtre fin avec un dispositif de lavage à contre-courant (16) sur au moins un des réservoirs de stockage (13) ainsi qu'au moins un dispositif de vidange opérant automatiquement (18) pour chacun des réservoirs de stockage (13), comprenant les étapes de procédé suivantes:
    a) la fourniture de fluide de nettoyage (22) dans au moins un des réservoirs de stockage (13), et le pompage de fluide de nettoyage avec le plus haut degré d'encrassement hors d'un des réservoirs de stockage (13),
    b) le pompage de fluide de nettoyage (22) dans le réservoir de stockage vidé (13),
    c) le nouveau remplissage du réservoir de stockage préalablement vidé (13) avec du fluide de nettoyage selon l'étape de procédé b),
    d) la circulation du fluide de nettoyage (22) dans le réservoir de stockage respectif (13), et
    e) le nouveau pompage, faisant suite à l'étape de procédé d), du fluide de nettoyage usé (22) dans un réservoir de stockage (13) situé en amont, considéré dans la direction de transport (8) des articles à nettoyer,
    f) l'exécution des étapes de procédé b), c), d) jusqu'à ce qu'un réservoir de stockage (13) situé immédiatement en aval de l'entrée (1) soit nettoyé, et
    g) le filtrage fin du contenu respectivement à pomper du réservoir de stockage (13) dans un filtre fin à lavage à contre-courant (16) pendant l'étape de procédé d),
    h) le lavage à contre-courant du filtre fin (16) avant les étapes de procédé b) ou e) et le pompage simultané de fluide de nettoyage (22) dans un des réservoirs de stockage (13), et
    i) la vidange successive de tous les réservoirs de stockage (13).
  2. Procédé selon la revendication 1, comprenant les étapes de procédé suivantes:
    a. vider le contenu du réservoir de stockage (13), qui est associé à une zone de pré-rinçage (2), dans un système d'eaux usées,
    b. vider le réservoir de stockage (13) d'une zone de lavage principale (3) dans le réservoir de stockage (13), qui est associé à une zone de pré-rinçage (2),
    c. vider tous les autres réservoirs de stockage (13) chaque fois dans les réservoirs de stockage (13) qui les précèdent,
    d. remplir le dernier réservoir de stockage (13), considéré dans la direction de transport (8), avec de l'eau fraîche sans ou avec addition d'un agent de nettoyage ou de rinçage final,
    e. faire circuler simultanément dans tous les réservoirs de stockage (13) le fluide de nettoyage (22) dans chacun des réservoirs de stockage (13) au moyen de pompes de recirculation (14) via des systèmes de rinçage (9, 10, 11),
    f. vider de nouveau le réservoir de stockage (13) de la zone de pré-rinçage (2) dans le système d'eaux usées,
    g. vider de nouveau le réservoir de stockage (13) de la zone de lavage principale (3) dans le premier réservoir de stockage (13) de la zone de pré-rinçage (2),
    h. vider de nouveau tous les autres réservoirs de stockage (13) de la même manière chaque fois dans les réservoirs de stockage (13) qui les précèdent,
    i. maintenir vide le dernier des réservoirs de stockage (13), considéré dans la direction de transport (8) des articles à nettoyer,
    j. faire de nouveau circuler le fluide de nettoyage (22) simultanément dans chacun des réservoirs de stockage (13) au moyen de pompes de recirculation (14) via le système de rinçage respectif (9, 10, 11),
    k. répéter les cycles précédents, jusqu'à ce que tous les réservoirs de stockage (13) soient vidés.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, après l'étape de procédé d), on remplit le dernier des réservoirs de stockage (13) - considéré dans la direction de transport (8) des articles à nettoyer - avec de l'eau fraîche sans ou avec addition d'un agent de nettoyage ou de rinçage final.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on réutilise le fluide de nettoyage (22) provenant de chacun des réservoirs de stockage (13) dans le réservoir de stockage (13), qui est disposé en amont de celui-ci, considéré dans la direction de transport (8) des articles à nettoyer.
  5. Procédé selon une ou plusieurs des revendications précédentes, caractérisé en ce que le lave-vaisselle à avancement automatique est complètement vidé du fluide de nettoyage et de l'eau fraîche après la fin du cycle d'auto-nettoyage automatique.
  6. Lave-vaisselle à avancement automatique pour la mise en oeuvre du procédé selon la revendication 1, caractérisé en ce que des systèmes de rinçage (9, 10, 11) associés dans les zones (2, 3, 4, 5) pour les articles à nettoyer présentent des gicleurs ou des têtes de gicleurs, qui mouillent des faces intérieures de la zone respective (2, 3, 4, 5) de manière essentiellement totale avec du fluide de nettoyage (22) et des dispositifs de filtrage fin avec lavage à contre-courant (16) sont logés à l'intérieur de chacun d'au moins un réservoir de stockage (13).
  7. Lave-vaisselle à avancement automatique selon la revendication 6, caractérisé en ce que des gicleurs ou des têtes de gicleurs sont montés respectivement sur les systèmes de rinçage (9, 10, 11), de telle manière que ceux-ci mouillent entièrement avec du fluide de nettoyage (22) les faces intérieures de portes (24) permettant un accès aux zones (2, 3, 4, 5).
  8. Lave-vaisselle à avancement automatique selon la revendication 6, caractérisé en ce que des gicleurs ou des têtes de gicleurs, qui mouillent de manière essentiellement totale avec du fluide de nettoyage (22) les faces intérieures de la zone de nettoyage respective (2, 3, 4, 5), indépendamment des systèmes de rinçage (9, 10, 11, 12) qui y sont installés, sont disposés sur les parois et/ou sur le fond et/ou sur le plafond des diverses zones (2, 3, 4, 5).
  9. Lave-vaisselle à avancement automatique selon la revendication 7, caractérisé en ce que des gicleurs ou des têtes de gicleurs, qui mouillent de manière essentiellement totale avec du fluide de nettoyage (22) les faces intérieures des portes permettant un accès aux diverses zones (2, 3, 4, 5), indépendamment des systèmes de rinçage (9, 10, 11, 12) qui y sont installés, sont disposés sur les parois et/ou sur le fond et/ou sur le plafond des diverses zones (2, 3, 4, 5) .
  10. Lave-vaisselle à avancement automatique selon la revendication 7, caractérisé en ce que les côtés arrière et/ou les côtés intérieurs des portes permettant un accès aux zones (2, 3, 4, 5) sont profilés de telle manière qu'un film de liquide se forme sur les faces des côtés arrière et/ou des portes et emporte les saletés détachées.
  11. Lave-vaisselle à avancement automatique selon la revendication 10, caractérisé en ce que le profilage des côtés arrière et/ou des côtés intérieurs des portes est réalisé en forme d'arête de poisson.
  12. Lave-vaisselle à avancement automatique selon la revendication 6, caractérisé en ce que les gicleurs ou les têtes de gicleurs destinés au nettoyage intérieur de la zone respective (2, 3, 4, ou 5) sont alimentés en fluide de nettoyage (22) par la pompe de recirculation (14) associée à la zone respective (2, 3, 4, ou 5).
  13. Lave-vaisselle à avancement automatique selon la revendication 6, caractérisé en ce que les gicleurs ou les têtes de gicleurs destinés au nettoyage intérieur automatisé sont alimentés en fluide de nettoyage (22) par une pompe de recirculation séparée (14), respectivement associée à chaque zone (2, 3, 4, ou 5).
EP08871607A 2008-01-24 2008-10-17 Procédé d'auto-nettoyage d'un lave-vaisselle à avancement automatique et lave-vaisselle à avancement automatique correspondant Active EP2252191B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008005876A DE102008005876B3 (de) 2008-01-24 2008-01-24 Verfahren zur Selbstreinigung einer Durchlaufspülmaschine
PCT/EP2008/008807 WO2009092404A1 (fr) 2008-01-24 2008-10-17 Procédé d’auto-nettoyage d'un lave-vaisselle à avancement automatique et lave-vaisselle à avancement automatique correspondant

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EP2252191A1 EP2252191A1 (fr) 2010-11-24
EP2252191B1 true EP2252191B1 (fr) 2013-01-23

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US (1) US8491723B2 (fr)
EP (1) EP2252191B1 (fr)
CN (1) CN101925322B (fr)
DE (1) DE102008005876B3 (fr)
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WO (1) WO2009092404A1 (fr)

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WO2014048978A2 (fr) * 2012-09-25 2014-04-03 Dsm Ip Assets B.V. Polymère, composition et utilisation
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Publication number Publication date
EP2252191A1 (fr) 2010-11-24
CN101925322A (zh) 2010-12-22
DE102008005876B3 (de) 2009-04-30
US8491723B2 (en) 2013-07-23
US20110017234A1 (en) 2011-01-27
RU2434570C1 (ru) 2011-11-27
WO2009092404A1 (fr) 2009-07-30
CN101925322B (zh) 2012-09-05

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