EP2394555A2 - Lave-linge continu doté d'un rinçage amélioré - Google Patents

Lave-linge continu doté d'un rinçage amélioré Download PDF

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Publication number
EP2394555A2
EP2394555A2 EP20110001043 EP11001043A EP2394555A2 EP 2394555 A2 EP2394555 A2 EP 2394555A2 EP 20110001043 EP20110001043 EP 20110001043 EP 11001043 A EP11001043 A EP 11001043A EP 2394555 A2 EP2394555 A2 EP 2394555A2
Authority
EP
European Patent Office
Prior art keywords
zone
rinse
concentrate
fresh water
cleaning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20110001043
Other languages
German (de)
English (en)
Inventor
Vera Dipl.-Ing. Schneider
Thomas Dr. Peukert
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.)
Meiko Maschinenbau GmbH and Co KG
Original Assignee
Meiko Maschinenbau GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meiko Maschinenbau GmbH and Co KG filed Critical Meiko Maschinenbau GmbH and Co KG
Publication of EP2394555A2 publication Critical patent/EP2394555A2/fr
Pending legal-status Critical Current

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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
    • A47L15/4229—Water softening arrangements

Definitions

  • the present invention relates to a continuous washing machine, which may be designed as a belt transport or basket transport dishwasher and which has a plurality of treatment stations to be passed through the items to be cleaned.
  • a continuous dishwasher dishes, glasses, cutlery, trays or other commodities such as battery cases or the like can be cleaned, rinsed and dried.
  • Continuous dishwashers generally include an inlet area in which the goods to be cleaned, such as crockery, cutlery, trays or the like, directly or indirectly, for example by means of crockery baskets (basket transport machines), on a conveyor, such as a continuous, with movable gripper provided band (tape transport machine) is applied.
  • crockery baskets basic transport machines
  • movable gripper provided band tape transport machine
  • an open outlet area from which the cleaned material can be removed.
  • a drying zone may also be provided after the final rinse zone and before the outlet area.
  • the final rinse zone usually two process steps are carried out.
  • PKSP Pump Clear Flushing
  • at least one rinse of the material to be cleaned is usually carried out with fresh water, which may be heated and mixed with rinse aid, which is called fresh water rinse (FKSP).
  • fresh water rinse FKSP
  • the amount of fresh water used for this purpose directly influences the consumption / rinse aid and the energy requirement of the continuous-flow dishwasher.
  • the fresh water, which is sprayed as part of the fresh water rinse flows to the storage tank of the pump clearing system and thus regenerates the liquid supply as part of the pump clearing.
  • a good rinse aid result is present when there are no stains on the dried items to be cleaned, for example on the cutlery, or no coatings on the glasses.
  • the mineral content is derived from a measurement of the electrical conductivity. For example, the maximum permissible conductance for a good final rinse result is 80 ⁇ S for cutlery, 100 ⁇ S for jars and 400 ⁇ S for dishes. This value is often achieved in practice only by upstream of a plant for water treatment. Such systems may, for example, be reverse osmosis systems (UO systems). However, there are also systems based on the principle of ion exchange.
  • the water treatment plants can be arranged either freestanding between the on-site fresh water supply and the dishwasher, or partially or completely integrated in the respective dishwasher. Such arrangements are widely known in practice.
  • reverse osmosis Although a water treatment based on reverse osmosis usually provides the best result and is very environmentally friendly, because the water no additional chemical Substances must be added.
  • a significant disadvantage of reverse osmosis is the fact that the fresh water used can be supplied only in part as softened or demineralized fresh water (permeate) to the respective consumer, in this case the continuous dishwasher. Due to the principle, a proportion of 25% to 50% of the fresh water used in the context of reverse osmosis must be discarded as a concentrate and generally be discharged via the sewer from the reverse osmosis system.
  • the object of the present invention is to use concentrate that is obtained as part of the water treatment in a beneficial manner and to avoid harmful effects on the result of the cleaning and / or rinsing process.
  • the concentrate obtained during the water treatment is used for an intermediate rinse step.
  • the concentrate which originates from the water treatment, is essentially free from macroscopic impurities, such as suspended matter, and thus much cleaner than the circulated final rinse liquid in the intermediate rinse cycle upstream pump clearing.
  • the splashed water in the intermediate step is collected and flows to the storage tank of the pump clearing.
  • the relatively higher mineral content of the concentrate does not interfere at this point in the process since the final rinse step is always done with softened fresh water, i. the permeate occurs, and thus remain on the goods to be cleaned during drying no deposits, since the mineral content of the permeate is below the limits listed above.
  • the concentrate sprayed in the intermediate rinse step may remain unheated, but it may also be preheated.
  • preheating can happen, for example, a boiler or a heat exchanger.
  • the intermediate rinse concentrate for the intermediate rinse can be provided with rinse aid.
  • the water treatment in the form of a reverse osmosis system so in the installation of the dishwasher, in particular a continuous dishwasher, integrated, that the reverse osmosis system for a first heat exchanger, which serves for example for the exhaust air is arranged, and thus heated Fresh water can be operated.
  • the efficiency of reverse osmosis systems can be increased by operating at higher temperatures.
  • the single figure shows schematically a cleaning device, in particular in the form of a continuous dishwashing machine.
  • the proposed solution according to the invention is described below using the example of a cleaning device 110, which is designed as a continuous dishwasher 112.
  • the throughflow dishwasher 112 can be both a basket transport dishwasher in which items to be cleaned 120 in transport baskets 122 are conveyed through various treatment zones in the transport direction 130, and also a belt conveyor dishwasher, in which the items to be cleaned 120 reach the individual processing zones of the conveyor dishwasher 112; which can be designed to be movable, is received and transported by the conveying movement of the endless conveyor belt in the transport direction 130 through the individual treatment zones for the items to be cleaned 120 in the conveyor dishwasher 112.
  • a housing 114 includes.
  • the housing 114 encloses a cleaning tunnel 116, through which the cleaning material 120 in the transport direction 130, according to the feed of a transport device 118 - preferably formed as an endless link belt - is conveyed.
  • the cleaning material 120 is received in transport baskets 122 on the transport device 118 designed as an endless articulated conveyor belt.
  • transport device 118 designed as an endless articulated conveyor belt.
  • individual transport baskets 122 with items to be cleaned 120 are applied to the transport device 118 formed as an endless link belt.
  • the item to be cleaned 120 is transported through different cleaning zones 126.
  • the individual transport baskets 122 receiving the items to be cleaned 120 are initially fed to a pre-evacuation zone 132 as seen in the transporting direction 130 through an inlet opening 123.
  • the Vorab syndrome 132 for example, by means of a separation process 128, which is provided in the region of the inlet opening 122 at the inlet 124, be sealed to the outside, so that the escape of steam waves and moisture to the outside, in particular in the direction of the inlet 124, is reduced.
  • the cleaning system 134 of the pre-evacuation zone 132 particularly comprises a pre-evacuation zone spraying nozzle system 136, as seen in the vertical direction from the top as well as from the front Bottom side with respect to the conveyed in the transport direction 130 transport baskets 122 cleaning liquid is applied to the either directly on the transport device 118 cleaning 120 or the 120 received in transport baskets 122 huntsgut 120 uniformly from the top and bottom.
  • pre-evacuation zone tank 138 from which cleaning fluid is continuously supplied to the at least one pre-evacuation zone spray nozzle system 136 via a pre-evacuation zone pump 140.
  • the pre-evacuation zone tank 138 is formed in the bottom portion of the continuous dishwashing machine 112.
  • the main scavenging zone 142 As already mentioned, as seen in transport direction 130, behind the pre-evacuation zone 132 is the main scavenging zone 142. In the main scavenging zone 142 of the through-bed dishwasher 112 there is at least one main scavenging zone spray nozzle system 144 recorded. This is acted upon by at least one Haupt Hugheszonen pump 148 with cleaning fluid, which is stored in at least one Hauptpülzonen-tank 146. The at least one main reservoir tank 146 is likewise preferably located in the bottom area of the throughflow dishwasher 112.
  • the at least one main purging zone spray nozzle system 144 is constructed such that individual spray nozzles are located both above and below the items to be cleaned 120, if this is accommodated in a transport basket 122, or if this is arranged directly on the transport device 118, which is preferably designed as a chain-shaped endless conveyor belt.
  • the main flushing zone 142 is adjoined by a final rinse zone 149, likewise separated from it by a separating curtain 128.
  • the rinse-off zone 149 comprises, in addition to a pump rinsing zone 150 and a fresh-water rinsing zone 130, an intermediate rinse zone 180 lying between these two zones, as seen with respect to the transport direction 130.
  • the pump rinsing zone 150 which is part of the final rinse zone 149, comprises a pump rinse zone tank 152 also located in the bottom section of the conveyor dishwashing machine 112.
  • Rinse cycle fluid is withdrawn from the pump rinse zone tank 152, which includes at least one pump rinse zone spray nozzle system 156 via a pump rinse zone pump 158 fed and sprayed onto the cleaning material.
  • the rinsing fluid injected inside the pump rinsing zone 150 and circulated in the pump rinsing zone tank 152 by the pump rinsing zone pump 158 has a substantially higher quality than the cleaning fluid. used in the main scavenging zone 142.
  • the quality of the rinse aid fluid in this context refers, for example, to the content of dirt particles or suspended matter. The lower the proportion of such substances in the rinse aid, the better is its quality.
  • the pump rinsing zone 150 is connected downstream of the intermediate rinsing zone 180.
  • the intermediate rinse zone 180 comprises at least one intermediate rinse zone spray nozzle system 182. This is fed with concentrate 190, which is produced in a water treatment plant 184.
  • the Water treatment plant 184 which is associated with the continuous dishwashing machine 112, is in particular a reverse osmosis system which is either integrated into the continuous dishwashing machine 112 or can also be assigned as an auxiliary unit as a stand-alone unit.
  • the water treatment plant 184 is operated with fresh water supplied from a fresh water inlet 164.
  • This fresh water is passed through a heat recovery device 172 in a particularly advantageous manner, which extracts heat from the exhaust air of the conveyor dishwasher 112, before the exhaust air is removed via a blower 174 of the conveyor dishwasher 112 and discharged into the environment.
  • the preheated via the heat recovery device 172 fresh water is fed to the water treatment plant 184.
  • This is in particular a reverse osmosis system 184, in which on the one hand permeate 188 and the above-mentioned concentrate 190 is formed. While the concentrate 190 is being supplied in heated or unheated state to the intermediate purge zone 180, the permeate 188 is stored in a fresh water boiler or instantaneous water heater (see position 166 in FIG. 1 ) and the Frischiganklar Hugheszone 160 fed.
  • the Frischwasserklar Hopkinszone 160 is seen in the transport direction 130 of the cleaning material 120, the intermediate flushing zone 180 downstream.
  • the entire rinsing zone 149, the pump rinsing zone 150, the fresh water rinsing zone 160 and the intermediate rinsing zone 180 arranged between them are separated by separating curtains 128 on the one hand against the main rinsing zone 142 and on the other hand against a drying zone 168.
  • a blower 170 Within the drying zone 168 is a blower 170.
  • FIG. 1 shows that in the state shown there within the drying zone 168 is a transport basket 122 with 120 housed therein cleaning material.
  • the drying zone 168 is as shown in FIG. 1 also separated by a separation curtain 128 against a spout 127.
  • the transport baskets 122 transported by the cleaning zones 126 and the drying zone 168 of the continuous dishwasher 112 which may contain the items to be cleaned 120, are removed or the cleaned and dried items 120 are removed directly from the conveyor
  • the cleaning device 110 in particular designed as a through-flow dishwasher 112, is operated via a controller 178.
  • water treatment plant 194 ensures that within the fresh water rinsing 160 a good dishwashing result is achieved.
  • a good dishwashing result is achieved.
  • the content of minerals in the permeate 188 obtained from the water treatment plant 184 is extremely low.
  • a good rinse aid result is usually present when there are no stains on the dried items to be cleaned 120, for example on the cutlery or on glasses.
  • the mineral content is derived from a measurement of the electrical conductivity. The classification of a good rinse result depends on the product to be cleaned 120.
  • the maximum permissible conductivity is 80 ⁇ S for cutlery, 100 ⁇ S for glasses and 400 ⁇ S for dishes.
  • these guide values can be achieved for the final rinse liquid used in the context of the fresh water rinsing zone 160.
  • the water treatment plant 184 depending on the space-side conditions either free-standing between the on-site fresh water supply and the continuous dishwasher 112 may be arranged, or partially or completely integrated into the respective continuous dishwasher 112.
  • the concentrate 190 which is from the water treatment plant 184, which is especially designed as a reverse osmosis system, used and does not need the sewer from the in particular be designed as a continuous dishwashing 112 trained cleaning device 110. Rather, the concentrate 190 is introduced into the rinse zone 149 in the intermediate rinse zone 180.
  • the concentrate is substantially free from macroscopic contaminants, such as particulates, and thus much cleaner than the circulating rinse liquid in the pregnant Vietnamesezone upstream Pumpenklar Hugheszone 150.
  • the fluid quality used is further improved by introducing the concentrate 190 within the intermediate rinse zone 180 before finally the final rinse aid result from the water treatment plant 184 derived Permeate 188 is achieved, which is introduced by the at least one fresh water rinse zone spray nozzle system 162 in the fresh water rinsing zone 160.
  • the water sprayed within the intermediate rinse zone 180, i. the optionally diluted concentrate 190 is collected and fed in an advantageous manner to the intermediate rinsing zone 180 in the transport direction 130 of the cleaning material 120 upstream of the pump rinsing zone tank 152.
  • the relatively higher level of minerals contained in the concentrate 190 is at this point, i. during the introduction of the concentrate 190 in the context of the intermediate rinse zone 180, harmless, since the final rinse step by the intermediate rinse zone 180 in the transport direction 130 of the cleaning material 120 downstream fresh water rinsing zone 160 always with demineralized fresh water, i. the permeate 188 from the water treatment plant 184.
  • demineralized fresh water i. the permeate 188 from the water treatment plant 184.
  • the concentrate 190 which originates from the water treatment plant 184, which is designed in particular as a reverse osmosis plant, can be introduced into the intermediate rinse zone 180 either unheated or heated.
  • a preheating of the concentrate 190 of the water treatment plant 184 can be done for example in a fresh water boiler or a water heater 166.
  • the concentrate 190 originating from the water treatment plant 184 can be mixed with rinse aid prior to introduction into the intermediate rinse zone. However, this is not mandatory.
  • the water treatment plant 184 is procured as reverse osmosis plant 184, which is integrated into the throughflow dishwasher 112 such that the water treatment plant 184 is arranged after a first heat exchanger, which can be part of the heat recovery device 172, for example .
  • a first heat exchanger which can be part of the heat recovery device 172, for example.

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  • Washing And Drying Of Tableware (AREA)
EP20110001043 2010-03-15 2011-02-09 Lave-linge continu doté d'un rinçage amélioré Pending EP2394555A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010011471 DE102010011471A1 (de) 2010-03-15 2010-03-15 Durchlaufspülmaschine mit verbesserter Klarspülung

Publications (1)

Publication Number Publication Date
EP2394555A2 true EP2394555A2 (fr) 2011-12-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110001043 Pending EP2394555A2 (fr) 2010-03-15 2011-02-09 Lave-linge continu doté d'un rinçage amélioré

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EP (1) EP2394555A2 (fr)
DE (1) DE102010011471A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2772178B1 (fr) 2013-02-28 2016-09-21 Comenda Ali S.p.A. Module de rinçage amélioré avec rinçage final à l'aide d'eau déminéralisée, procédé de rinçage amélioré associé et lave-vaisselle à tunnel équipé d'un tel module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20152427A1 (it) * 2015-07-23 2017-01-23 Ali Group S R L Lavastoviglie a basso consumo di acqua di rete con rigenerazione mediante filtraggio a membrana di una soluzione di riciclo già in uso nella lavastoviglie.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030014A1 (de) 2004-06-22 2006-01-12 Premark Feg L.L.C., Wilmington Spülmaschinen-Betriebsverfahren und Transportspülmaschine
DE102006005074A1 (de) 2006-02-03 2007-08-09 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156621A (en) * 1977-09-28 1979-05-29 American Sterilizer Company Regeneration of used dishwashing water without chemical additives for sanitizing and spot-free rinse uses
IT1247617B (it) * 1990-07-18 1994-12-28 Zanussi Elettrodomestici Procedimento di purificazione dell'acqua in una lavatrice
DE4305020A1 (de) * 1993-02-18 1994-08-25 Bosch Siemens Hausgeraete Verfahren zum Betreiben einer Haushalt-Geschirrspülmaschine
DE29918022U1 (de) * 1999-10-13 2000-01-13 Dansotec Gmbh Einrichtung zum Reinigen von zum medizinischen Gebrauch bestimmten Kanülen und Lanzetten
DE102005039140A1 (de) * 2005-08-18 2007-02-22 Premark Feg L.L.C., Wilmington Transport-Geschirrspülmaschine
DE102008048491A1 (de) * 2008-09-23 2010-04-01 Meiko Maschinenbau Gmbh & Co.Kg Geschirrspülmaschine mit Niedertemperatur-Nachspülung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004030014A1 (de) 2004-06-22 2006-01-12 Premark Feg L.L.C., Wilmington Spülmaschinen-Betriebsverfahren und Transportspülmaschine
DE102006005074A1 (de) 2006-02-03 2007-08-09 Premark Feg L.L.C., Wilmington Transportgeschirrspülmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2772178B1 (fr) 2013-02-28 2016-09-21 Comenda Ali S.p.A. Module de rinçage amélioré avec rinçage final à l'aide d'eau déminéralisée, procédé de rinçage amélioré associé et lave-vaisselle à tunnel équipé d'un tel module

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Publication number Publication date
DE102010011471A1 (de) 2011-09-15

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