EP2654544B1 - Waschmaschine mit automatischer schmutzentladung - Google Patents

Waschmaschine mit automatischer schmutzentladung Download PDF

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Publication number
EP2654544B1
EP2654544B1 EP11799555.5A EP11799555A EP2654544B1 EP 2654544 B1 EP2654544 B1 EP 2654544B1 EP 11799555 A EP11799555 A EP 11799555A EP 2654544 B1 EP2654544 B1 EP 2654544B1
Authority
EP
European Patent Office
Prior art keywords
washing
time span
dirt
transport
dirty
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.)
Active
Application number
EP11799555.5A
Other languages
English (en)
French (fr)
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EP2654544A1 (de
Inventor
Markus Heidt
Harald Disch
Harry Braun
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Premark FEG LLC
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Premark FEG LLC
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Publication of EP2654544A1 publication Critical patent/EP2654544A1/de
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Publication of EP2654544B1 publication Critical patent/EP2654544B1/de
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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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • A47L15/0031—Water discharge phases
    • 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
    • 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
    • A47L15/24—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
    • A47L15/245—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors the dishes moving in a horizontal plane the dishes being placed directly on the conveyors, i.e. not in dish racks
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/08—Drain or recirculation pump parameters, e.g. pump rotational speed or current absorbed by the motor
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/09—Water level
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/14—Water pressure or flow rate
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/20—Time, e.g. elapsed operating time
    • 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
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/28—Conveyor belt parameters, e.g. velocity of conveyor belts
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/02—Water discharge, e.g. opening or closure of discharge valve
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/05—Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/24—Conveyor belts, e.g. conveyor belts motors
    • 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
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the invention is consequently directed at a washing machine which has at least one washing zone designed as a recirculation circuit.
  • the washing zone designed as a recirculation circuit has a nozzle system with at least one washing nozzle for spraying washing liquid onto the batch of dishes and/or utensils to be cleaned, a washing tank for capturing at least part of the sprayed washing liquid and a washing pump for feeding washing liquid collected in the washing tank to the at least one washing nozzle.
  • the washing machine has a dirt capture system assigned to the at least one washing zone and having at least one tank-covering screen, in order to separate dirt particles from the sprayed washing liquid flowing back into the washing tank as a result of gravity.
  • Said washing zones of the transport washing machine are assigned in each case a washing system which has a washing pump and a line system (washing line system) which is connected to the washing pump and via which washing liquid is supplied to the nozzle system or the at least one washing nozzle of the nozzle system.
  • the washing liquid supplied to the at least one washing nozzle of the nozzle system is sprayed in the respective washing zones of the transport washing machine onto the batch which is being transported by a transport device of the transport washing machine through the respective washing zones.
  • Each washing zone is assigned a tank in which the liquid sprayed by the washing nozzles is received and/or in which liquid for the nozzle systems of the respective treatment zones is provided.
  • final-rinsing liquid in the form of fresh water which may be pure or mixed with further additives, such as for example final-rinsing agent, is sprayed onto the batch via the spray nozzles of the final-rinsing zone. At least part of the sprayed final-rinsing liquid is transported from zone to zone, opposite to the direction of transport of the batch, via a cascade system.
  • the sprayed final-rinsing liquid is captured in a tank (post-washing tank) of the post-washing zone, from which tank it is conveyed via the washing pump of the washing system belonging to the post-washing zone to the spray nozzles (post-washing nozzles) of the post-washing zone. Washing liquid is rinsed off from the batch in the post-washing zone.
  • the liquid which in this case occurs flows into the washing tank of the at least one main-washing zone which precedes the post-washing zone, as seen in the direction of transport of the batch.
  • the liquid is usually provided with a detergent and sprayed onto the batch via the nozzles (washing nozzles) of the main-washing zone by means of a pump system (washing pump) belonging to the washing system of the main-washing zone. If no further main-washing zone is provided, the liquid subsequently flows from the washing tank of the main-washing zone into the pre-washing tank of the pre-washing zone.
  • the liquid in the pre-washing tank is sprayed onto the batch via the pre-washing nozzles of the pre-washing zone by means of a pump system (pre-washing pump) belonging to the washing system of the pre-washing zone, in order to remove coarse impurities from the batch.
  • washing machines are equipped with rinsing pumps which supply the line system of the final-rinsing zone with the final-rinsing liquid to be sprayed.
  • rinsing pumps which supply the line system of the final-rinsing zone with the final-rinsing liquid to be sprayed.
  • This ensures, in particular, a virtually constant volume flow of the final-rinsing liquid in the final-rinsing zone.
  • the on-site line pressure for example the pressure of the fresh water supply, in order to deliver the final-rinsing liquid to the line system of the final-rinsing zone.
  • washing machine is designed as a programmable machine or as a transport washing machine
  • industrial dish-washing machines therefore usually comprise at least one washing system designed as a recirculation circuit, which has a nozzle system with at least one washing nozzle for spraying washing liquid onto the batch to be cleaned, a washing tank for capturing at least part of the sprayed liquid and at least one washing pump for feeding liquid collected in the washing tank to the at least one washing nozzle.
  • washing machines which are designed as transport washing machines
  • at least the pre-washing tank which is assigned to the pre-washing zone
  • the main-washing tank which is assigned to the at least one main-washing zone
  • planar screens or dirt-screening baskets are used for separating dirt particles from a circulating washing liquid
  • a dirt capture system assigned to the at least one washing system and having at least one tank-covering screen, in order to separate dirt particles from the sprayed washing liquid flowing back into the washing tank of the washing system designed as a recirculation circuit as a result of gravity
  • the dirt capture system also having a dirt-collecting region, arranged in the washing system, for collecting the dirt particles separated from the washing liquid with the aid of the tank-covering screen.
  • the dirt-collecting region is in this case open at the top, to allow dirt particles separated with the aid of the tank-covering screen to be fed in.
  • the sides of the dirt-collecting region are of a completely closed form, so that even fine and ultrafine dirt is prevented from escaping from the dirt-collecting region.
  • the dirt capture system additionally has a dirt-discharging pipe system, connected to the dirt-collecting region, for discharging from the washing system the dirt particles collected in the dirt-collecting region.
  • the tank-covering screen preferably designed as a planar screen
  • the dirt capture system ensures that the dirt particles washed off the batch in the washing system and the dirt particles introduced into the washing liquid in some other way can be effectively separated from the washing liquid and collected or concentrated in the dirt-collecting region.
  • the dirt-collecting region is of a completely closed form (i.e. fluidtight) at its sides, the dirt particles collected in the dirt-collecting region are encapsulated in relation to the washing liquid in the washing tank, so that even relatively small dirt particles that could possibly be produced by the dirt particles collected in the dirt-collecting region breaking up cannot get back into the washing liquid received in the washing tank.
  • the dirt-collecting region is connected to a dirt-discharging pipe system via which the dirt particles collected in the dirt-collecting region can be removed from the washing system.
  • the solution according to the invention goes further and envisages interrupting the operation of the washing pump for a first time. Within this first time, or at the latest upon the expiry of this first time, operation of the dirty-water pump then takes place for a second period of time.
  • This allows the rate at which dirt is introduced into the dirt-discharging system to be significantly improved, in particular in the case of machines and systems with a great washing pump circulating rate of 200 l/min to 1000 l/min.
  • the washing pump circulation is interrupted for a short time immediately before the dirt pumping-away cycle, so that the dirt particles contained in the washing liquid can settle more easily in the dirt-collecting region.
  • the solution according to the invention achieves a constant washing result even as the washing time increases, recontamination of the batch by dirt particles in the washing liquid being effectively prevented.
  • the solution according to the invention provides an effective method of discharging dirt particles from the washing liquid, and it is therefore possible to realize a longer service life for the washing liquid in comparison with conventional solutions. It is thus possible to use the washing liquid for cleaning a greater quantity of dishes before it has to be changed. This cuts down, in particular, on the use of clean water, detergent and heating energy.
  • the dirt capture system has at least one dirty-water pump arranged in the dirt-discharging pipe system.
  • This pump serves for actively feeding the dirt particles collected in the dirty-water collecting region optionally either to a dirt-capturing container formed outside the washing system or to a waste-disposal system formed outside the washing machine.
  • the dirty-water pump is in this case designed to remove the dirt particles collected in the dirt-collecting region from the washing system continuously or at given times or when given events occur.
  • At least one activatable valve arranged in the dirt-discharging pipe system may also be provided, in order to connect the dirt-collecting region optionally to a dirt-capturing container formed outside the washing system or to a waste-disposal system formed outside the washing machine when required or at given times or when given events occur.
  • the valve arranged in the dirt-discharging pipe system it is possible to connect the dirt-collecting region to the dirt-capturing container or the waste-disposal system, so that the dirt particles collected in the dirt-collecting region can be discharged, for example by gravity, from the dirt-collecting region, and consequently from the washing zone or the washing machine.
  • the solution according to the invention allows the dirt particles collected in the at least one washing system of the washing machine with the aid of the dirt capture system to be removed automatically from the washing machine.
  • Such dirt discharge carried out automatically and consequently much more thoroughly than before, relieves the personnel operating the washing machine.
  • influencing or blocking of the recirculation of the washing liquid in the washing zone due to overfilling of the dirt-collecting region can be effectively prevented.
  • FIG. 1 shows a schematic longitudinal sectional view of an example of a transport washing machine 50 designed according to the teachings of the present invention.
  • the transport washing machine 50 according to the representation in Figure 1 has a pre-washing zone 51 and a main-washing zone 52, which is arranged downstream of the pre-washing zone 51, as seen in the direction of transport T of the batch (not represented in Figure 1 ).
  • a post-washing or pre-rinsing zone 53 and a final-rinsing zone 54 following the post-washing or pre-rinsing zone 53 are arranged downstream of the main-washing zone 52, as seen in the direction of transport T.
  • At least the pre-washing zone 51 and the main-washing zone 52 are respectively formed as washing system 10-1 and washing system 10-2.
  • the batch either received directly on a conveyor belt 58 or held by baskets, runs in the direction of transport T through an entry tunnel 55, the following pre-washing zone 51, the main-washing zone 52, the post-washing zone 53, the final-rinsing zone 54 and a drying zone 56 into an exit section 57.
  • Said treatment zones 51, 52, 53, 54 of the transport washing machine 50 are respectively assigned spray nozzles 13-1, 13-2, 13-3, 13-4, via which liquid is sprayed onto the batch which is being transported by the conveyor belt 58 through the respective treatment zones 51, 52, 53, 54.
  • At least the pre-washing zone 51, the main-washing zone 52 and the post-washing or pre-rinsing zone 53 are respectively assigned a tank (washing tank 14-1, 14-2, 14-3), in which sprayed washing liquid is received and/or in which washing liquid for the spray nozzles 13-1, 13-2, 13-3 of the respective zones 51, 52, 53 is provided.
  • the pre-washing zone 51, the main-washing zone 52 and the post-washing zone 53 of the transport washing machine 50 have in each case a washing system 10-1, 10-2, 10-3.
  • Each washing system 10-1, 10-2, 10-3 is composed of a washing pump 11-1, 11-2, 11-3, a line system 12-1, 12-2, 12-3 connected to the washing pump 11-1, 11-2, 11-3 and the spray nozzles 13-1, 13-2, 13-3 connected to the line system 12-1, 12-2, 12-3.
  • a control device 100 schematically represented in the figures is provided, serving (inter alia) for suitably activating the respective washing pumps 11-1, 11-2, 11-3 of the washing systems 10-1, 10-2, 10-3 during a washing process, in order at least intermittently to supply washing liquid via the associated line system 12-1, 12-2, 12-3 to the spray nozzles 13-1, 13-2, 13-3 of the nozzle system belonging to the respective washing system 10-1, 10-2, 10-3.
  • the control device 100 is designed (e.g., programmed or otherwise configured) to serve for the mutually coordinated activation according to the invention of the washing pump 11-1 and of the dirty-water pump 74-1, in order to improve the discharge of dirt, especially in the region of the machine 50 near the entrance.
  • final-rinsing liquid in the form of fresh water which may be mixed with further chemical additives, for example rinsing agent, is sprayed onto the batch (not represented in Figure 1 ) via the spray nozzles 13-4 of the final-rinsing zone 54, these nozzles being arranged above and beneath the conveyor belt 58.
  • laterally arranged spray nozzles 13-5 may also be provided in the final-rinsing zone 54.
  • Part of the final-rinsing liquid sprayed in the final-rinsing zone 54 is transported from zone to zone via a cascade system counter to the transporting direction T of the batch.
  • the rest is channeled directly into the pre-washing tank 14-1 of the pre-washing zone 51 via a valve 59 and a bypass line 60.
  • the final-rinsing liquid sprayed in the final-rinsing zone 54 is collected in the tank (post-washing or pre-rinsing tank 14-3) of the post-washing or pre-rinsing zone 53, from which it is delivered to the spray nozzles 13-3 (post-washing or pre-rinsing nozzles) of the post-washing or pre-rinsing zone 53 via the washing pump 11-3 belonging to the washing system 10-3 of the post-washing or pre-rinsing zone 53. Washing liquid is washed off the batch in the post-washing or pre-rinsing zone 53.
  • the washing liquid then flows into the pre-washing tank 14-1 of the pre-washing zone 51.
  • the washing liquid collected in the pre-washing tank 14-1 is sprayed onto the batch in the pre-washing zone 51 via the spray nozzles 13-1 (pre-washing nozzles) of the washing system 10-1 belonging to the pre-washing zone 51, with the aid of a washing pump 11-1 belonging to the washing system 10-1 of the pre-washing zone 51, in order to remove coarse contaminants from the batch.
  • the main-washing zone 52 has a tank-covering screen 20-2, which is arranged above the main-washing tank 14-2.
  • washing liquid is sprayed onto the batch via the spray nozzles 13-2 (washing nozzles) of the washing system 10-2.
  • the sprayed washing liquid flows back into the washing tank 14-2 of the main-washing zone 52 as a result of gravity, wherein the dirt particles washed off the batch in the main-washing zone 52 are retained by the tank-covering screen 20-2, provided that the dirt particles are larger than the mesh width of the tank-covering screen 20-2.
  • the mesh width of the tank-covering screen 20-2 is preferably approximately 1 mm to 4 mm.
  • the washing operation has to be interrupted in order to allow the tank-covering screen 20-2 to be cleaned manually.
  • the pre-washing zone 51 is equipped with a tank-covering screen 20-1 designed as a planar screen.
  • This tank-covering screen 20-1 is arranged above the washing tank (pre-washing tank 14-1) of the pre-washing zone 51, in order to separate dirt particles from the washing liquid which has been sprayed in the pre-washing zone 51 and flows back into the pre-washing tank 14-1 as a result of gravity.
  • the mesh width of the tank-covering screen 20-1 is preferably in a range between approximately 1 mm and 4 mm.
  • the transport washing machine 50 represented in Figure 1 is equipped with a dirt capture system 70 which is assigned to the pre-washing zone 51 and has a dirt-collecting region 71-1 arranged in the pre-washing zone 51, and in particular within the pre-washing tank 14-1.
  • the construction and the functioning of the dirt capture system 70 used for the transport washing machine 50 represented in Figure 1 is described in more detail below with reference to the representation in Figure 4 .
  • the dirt-collecting region 71 serves for collecting the dirt particles separated from the washing liquid with the aid of the tank-covering screen 20-1.
  • the dirt-collecting region 71-1 is designed as a chamber which is arranged in the pre-washing tank 14-1 and is of a completely closed form on all its sides, but is open at the top, so that the dirt particles separated with the aid of the tank-covering screen 20-1 can pass into the chamber-like dirt-collecting region 71-1 via this opening.
  • the dirt-collecting region 71 is of a completely closed form on all its sides, it is possible to effectively prevent the dirt particles collected in the dirt-collecting region 71-1 from being able to return into the pre-washing tank 14-1 and contaminate the washing liquid collected in the pre-washing tank 14-1.
  • the tank-covering screen 20-1 is arranged above the dirt-collecting region 71-1 and has a runout slope in the form of a gradient directed toward a feed opening 22, the dirt-collecting region 71-1, which is open at the top, being arranged beneath the feed opening 22, so that the dirt particles separated with the aid of the tank-covering screen 20-1 can pass into the dirt-collecting region 71-1 via the feed opening 22.
  • the tank-covering screen 20-1 prefferably be designed, at least in certain regions, in a funnel-like manner, wherein the feed opening 22 is formed within the funnel-like region 21 of the tank-covering screen 20-1, and preferably in the center of the funnel-like region 21 of the tank-covering screen 20-1 (cf. in this respect also in particular the representation in Figure 4 ).
  • the dirt capture system 70 used for the embodiment represented in Figure 1 also has a dirt-discharging pipe system which is connected to the dirt-collecting region 71-1, comprises a vertical pipe 72-1 and a dirty-water line 73-1 and is intended for discharging from the pre-washing zone 51 the dirt particles collected in the dirt-collecting region 71-1.
  • a dirty-water pump 74-1 is arranged in the dirt-discharging pipe system 72-1, 73-1.
  • the inlet on the suction side of the dirty-water pump 74-1 is connected to the lower region of the dirt-collecting region 71-1 via the vertical pipe 72-1 belonging to the dirt-discharging pipe system 72-1, 73-1.
  • the outlet on the pressure side of the dirty-water pump 74-1 opens out in the dirty-water line 73-1 belonging to the dirt-discharging pipe system.
  • the dirty-water line 73-1 leads to an external dirt-capturing container 80, which is arranged outside the pre-washing zone 51, upstream of the entry tunnel 55 of the transport washing machine 50.
  • This external dirt-capturing container 80 preferably has a screen and a connection 81 to a waste-water system.
  • the dirty-water pump 74-1 delivers from the pre-washing zone 51 not only the dirt particles separated with the aid of the tank-covering screen 20-1 but also part of the washing liquid.
  • the material removed from the dirt-collecting region 71-1 (dirt particles and washing liquid) is screened in the dirt-capturing container 80, wherein the liquid constituent parts (washing liquid) can be fed to a waste-water system via the outflow connection 81 and the solids remaining in the dirt-capturing container 80 (dirt particles) can then be disposed of.
  • the material removed from the dirt-collecting region 71-1 is preferably likewise screened in the waste-disposal system 82, wherein the liquid constituent parts (washing liquid) can be fed to a waste-water system via an outflow connection 83 and the solids remaining in the waste-disposal system 82 (dirt particles) can then be disposed of.
  • the control device 100 likewise serves for the mutually coordinated activation according to the invention of the washing pump 11-1 and of the dirty-water pump 74-1, in order to improve the discharge of dirt, especially in the region of the machine 50 near the entrance.
  • the dirt capture system 70 is used for a transport washing machine 50 (cf., for example, Figures 1 to 3 ), it is also conceivable for the dirty-water pump 74 to be activated, for example, as a function of the transport speed at which the batch is transported through the treatment zones of the transport washing machine 50 or, for example, as a function of the quantity of final-rinsing liquid which is sprayed per unit of time in the final-rinsing zone 54.
  • FIG. 5 shows a schematic representation of a deactivation and activation sequence of the washing pump 11 and the dirty-water pump 74 over a number of washing cycles Z1, Z2 and Z3.
  • the washing pump should be deactivated for a time span T1 at the beginning of each washing cycle Z1 to Z3, so that the recirculation circuit of the washing system 51, 52 is interrupted.
  • the dirty-water pump 74 is activated for a time span T2.
  • the dirt particles can be sucked away very effectively, since they are then only subjected to the influence of the suction of the dirty-water pump, which draws them into the feed opening 22 of the dirt-collecting region 71.
  • a dirt discharge may take place not only at the beginning of each washing cycle Z1 to Z3 but also at the end or in the middle of a cycle. What is important is that there is a cyclical repetition of the discharge, in order to achieve a uniformly high washing quality.
  • the feed opening 22 is covered by a coarse screen, wherein this coarse screen should preferably have a mesh width which is greater than the mesh width of the tank-covering screen 20, 20-1, 20-2.
  • this coarse screen can effectively prevent, for example, items of cutlery or other utensils, as opposed to dirty-water particles, from accidentally getting into the dirt-collecting region 71, 71-1, 71-2.

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

Claims (15)

  1. Spülmaschine mit mindestens einem Spülsystem (51, 52), das als ein Rezirkulationskreislauf ausgebildet ist, insbesondere industrielle Spülmaschine für Geschirr oder Besteck, die als eine programmierbare Maschine oder als eine Transportspülmaschine (50) ausgebildet ist, wobei das mindestens eine Spülsystem (51, 52) ein Düsensystem mit mindestens einer Spüldüse (13, 13-1, 13-2) zum Sprühen von Spülflüssigkeit auf die zu reinigende Charge, einen Spülbehälter (14; 14-1, 14-2) zum Auffangen zumindest eines Teils der versprühten Spülflüssigkeit und eine Spülpumpe (11; 11-1, 11-2) zum Zuführen von in dem Spülbehälter (14; 14-1, 14-2) aufgefangener Spülflüssigkeit zu der mindestens einen Spüldüse (13, 13-1, 13-2) aufweist, und wobei des Weiteren ein Schmutzauffangsystem (70), das dem mindestens einen Spülsystem (51, 52) zugeordnet ist, um Schmutzpartikel von der versprühten Spülflüssigkeit, die aufgrund der Schwerkraft zurück in den Spülbehälter (14; 14-1, 14-2) strömt, zu trennen, und eine Schmutzwasserpumpe (74; 74-1, 74-2), die mit dem Schmutzauffangsystem (70) verbunden ist und dazu bestimmt ist, die Schmutzpartikel aus dem Schmutzauffangsystem (70) abzuführen, vorgesehen sind, wobei eine Steuervorrichtung (100) für die gegenseitig koordinierte Aktivierung der Spülpumpe (11; 11-1, 11-2) und der Schmutzwasserpumpe (74; 74-1, 74-2) ausgelegt ist, sodass der Rezirkulationskreislauf des Spülsystems (51, 52) für eine erste Zeitspanne (T1) unterbrochen werden kann, dadurch gekennzeichnet, dass die Steuervorrichtung (100) zum Starten der Aktivierung der Schmutzwasserpumpe (74; 74-1, 74-2) innerhalb dieser ersten Zeitspanne (T1), jedoch nicht ab Beginn der ersten Zeitspanne (T1), und zum Fortführen für eine zweite Zeitspanne (T2) ausgelegt ist, wobei die Steuervorrichtung (100) zum Deaktivieren der Spülpumpe (11; 11-1, 11-2) in der ersten Zeitspanne (T1), wobei die erste Zeitspanne (T1) 0,5 bis 10 Sekunden beträgt, und zum Aktivieren der Schmutzwasserpumpe (74; 74-1, 74-2) in der zweiten Zeitspanne (T2), wobei die zweite Zeitspanne (T2) 1 bis 20 Sekunden beträgt, ausgelegt ist.
  2. Spülmaschine nach Anspruch 1, wobei die Steuervorrichtung (100) zur zyklischen Wiederholung der gegenseitig abgestimmten Ansteuerung der Spülpumpe (11; 11-1, 11-2) und der Schmutzwasserpumpe (74; 74-1, 74-2) ausgebildet ist.
  3. Spülmaschine nach Anspruch 1 oder 2, wobei die Steuervorrichtung (100) zum Deaktivieren der Spülpumpe (11; 11-1, 11-2) in einer ersten Zeitspanne (T1) von 1 bis 3 Sekunden und/oder zum Aktivieren der Schmutzwasserpumpe (74; 74-1, 74-2) in einer zweiten Zeitspanne (T2) von 2 bis 10 Sekunden ausgebildet ist.
  4. Spülmaschine nach einem der vorhergehenden Ansprüche, wobei die Steuervorrichtung (100) von Transportspülmaschinen zum Anhalten des Chargenförderbands innerhalb der ersten Zeitspanne (T1) ausgebildet ist.
  5. Spülmaschine nach einem der vorhergehenden Ansprüche, wobei die Steuervorrichtung (100) von programmierbaren Maschinen dazu ausgelegt ist, eine vorbestimmte Spülzeit pro Charge um den Betrag der ersten Zeitspanne (T1) zu verlängern.
  6. Spülmaschine nach einem der vorhergehenden Ansprüche, wobei die Steuervorrichtung (100) von Transportspülmaschinen dazu ausgelegt ist, die erste Zeitspanne (T1) und/oder die zweite Zeitspanne (T2) in Abhängigkeit von der Transportgeschwindigkeit einer Charge und/oder in Abhängigkeit von einer Spülflüssigkeitsmenge zu variieren.
  7. Spülmaschine nach einem der vorhergehenden Ansprüche, wobei die Steuervorrichtung (100) von Transportspülmaschinen dazu ausgelegt ist, eine Wiederholungsrate der gegenseitig abgestimmten Aktivierung der Spülpumpe (11; 11-1, 11-2) und der Schmutzwasserpumpe (74; 74-1, 74-2) in Abhängigkeit von der Transportgeschwindigkeit einer Charge und/oder in Abhängigkeit von einer Spülflüssigkeitsmenge zu variieren.
  8. Verfahren zum Abführen von Schmutzpartikeln aus einer Spülmaschine nach einem der vorhergehenden Ansprüche, wobei der Rezirkulationskreislauf des Spülsystems (51, 52) infolge der gegenseitig abgestimmten Aktivierung der Spülpumpe (11; 11-1, 11-2) und der Schmutzwasserpumpe (74; 74-1, 74-2) für eine erste Zeitspanne (T1) unterbrochen wird,
    dadurch gekennzeichnet, dass
    die Spülpumpe (11; 11-1, 11-2) in der ersten Zeitspanne (T1) deaktiviert wird, wobei die erste Zeitspanne (T1) 0,5 bis 10 Sekunden beträgt, und dass die Schmutzwasserpumpe (74; 74-1, 74-2) in der zweiten Zeitspanne (T2), innerhalb der ersten Zeitspanne, jedoch nicht ab Beginn der ersten Zeitspanne (T1), aktiviert wird, wobei die zweite Zeitspanne (T2) 1 bis 20 Sekunden beträgt.
  9. Verfahren nach Anspruch 8, wobei die gegenseitig abgestimmte Aktivierung der Spülpumpe (11; 11-1, 11-2) und der Schmutzwasserpumpe (74; 74-1, 74-2) zur Unterbrechung des Rezirkulationskreislaufs bzw. zur Abführung der Schmutzpartikel zyklisch wiederholt wird.
  10. Verfahren nach Anspruch 8 oder 9, wobei die erste Zeitspanne (T1) 1 bis 3 Sekunden beträgt, und/oder die zweite Zeitspanne (T2) 2 bis 10 Sekunden beträgt.
  11. Verfahren nach einem der Ansprüche 8 bis 10, wobei, im Fall von Transportspülmaschinen, der Transport einer Charge innerhalb der ersten Zeitspanne (T1) gestoppt wird.
  12. Verfahren nach einem der Ansprüche 8 bis 11, wobei, im Fall einer programmierbaren Maschine, eine vorbestimmte Spülzeit für eine Charge um den Betrag der ersten Zeitspanne (T1) verlängert wird.
  13. Verfahren nach einem der Ansprüche 8 bis 12, wobei, im Fall von Transportspülmaschinen, die erste Zeitspanne (T1) und/oder die zweite Zeitspanne (T2) in Abhängigkeit von der Transportgeschwindigkeit einer Charge und/oder in Abhängigkeit von einer Spülflüssigkeitsmenge variiert werden.
  14. Verfahren nach einem der Ansprüche 8 bis 13, wobei, im Fall einer Transportspülmaschine, eine Wiederholungsrate der gegenseitig abgestimmten Aktivierung der Spülpumpe (11; 11-1, 11-2) und der Schmutzwasserpumpe (74; 74-1, 74-2) in Abhängigkeit von der Transportgeschwindigkeit einer Charge und/oder in Abhängigkeit von einer Spülflüssigkeitsmenge variiert wird.
  15. Verwendung einer Steuervorrichtung (100) nach einem der Ansprüche 1 bis 7 zur Durchführung des Verfahrens nach einem der Ansprüche 8 bis 14.
EP11799555.5A 2010-12-21 2011-12-06 Waschmaschine mit automatischer schmutzentladung Active EP2654544B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010063711A DE102010063711A1 (de) 2010-12-21 2010-12-21 Spülmaschine mit automatischer Schmutzaustragung
PCT/US2011/063382 WO2012087554A1 (en) 2010-12-21 2011-12-06 Washing machine with automatic dirt discharge

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EP2654544A1 EP2654544A1 (de) 2013-10-30
EP2654544B1 true EP2654544B1 (de) 2024-11-27

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CN (1) CN103415238B (de)
AU (1) AU2011349892B2 (de)
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WO (1) WO2012087554A1 (de)

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DE102012211442A1 (de) * 2012-07-02 2014-01-02 Meiko Maschinenbau Gmbh & Co. Kg Reinigungsvorrichtung mit individuell schaltbarem Klarspül-Düsensystem
US9943210B2 (en) * 2014-05-13 2018-04-17 Illinois Tool Works Inc. Warewasher with automated scrapping system
CN106963314B (zh) * 2017-05-11 2023-05-12 广州春尔环保科技有限公司 一种应用磁性固定的餐具清洗系统
DE102019126876A1 (de) * 2019-10-07 2021-04-08 Illinois Tool Works Inc. Spülmaschine mit schmutzaustragsystem
JP7588333B2 (ja) * 2021-06-10 2024-11-22 パナソニックＩｐマネジメント株式会社 食器洗い機および制御方法
CN114472412B (zh) * 2022-03-03 2023-05-12 中蔬生物科技(寿光)有限公司 一种环保型组培瓶自动清洗机

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DE102010063711A1 (de) 2012-06-21
CN103415238B (zh) 2016-11-09
WO2012087554A1 (en) 2012-06-28
EP2654544A1 (de) 2013-10-30
AU2011349892A1 (en) 2013-07-11
AU2011349892B2 (en) 2016-05-19
CN103415238A (zh) 2013-11-27

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