EP3840626B1 - Reinigungssystem und verfahren zur reinigung von reinigungsgut - Google Patents

Reinigungssystem und verfahren zur reinigung von reinigungsgut Download PDF

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Publication number
EP3840626B1
EP3840626B1 EP19755911.5A EP19755911A EP3840626B1 EP 3840626 B1 EP3840626 B1 EP 3840626B1 EP 19755911 A EP19755911 A EP 19755911A EP 3840626 B1 EP3840626 B1 EP 3840626B1
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EP
European Patent Office
Prior art keywords
cleaned
cleaning
items
transfer
conveying apparatus
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
EP19755911.5A
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German (de)
English (en)
French (fr)
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EP3840626A1 (de
Inventor
Bruno Gaus
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Meiko Maschinenbau GmbH and Co KG
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Meiko Maschinenbau GmbH and Co KG
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Publication of EP3840626A1 publication Critical patent/EP3840626A1/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
    • A47L15/24—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
    • A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • 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
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • 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
    • A47L2501/36—Other output

Definitions

  • the invention relates to a cleaning system and a method for cleaning items to be cleaned.
  • Cleaning systems and methods of the type mentioned can be used, for example, in the field of dishwashing technology, in particular in the field of commercial dishwashing technology.
  • the invention can be used in particular in canteen kitchens in which items to be cleaned, for example trays, crockery and cutlery, have to be cleaned in large quantities.
  • other areas of use are also conceivable in principle.
  • cleaning devices also referred to as cleaning devices, which can clean and/or disinfect items to be cleaned. Overall, the design of these cleaning devices depends heavily on the various boundary conditions, such as the type of cleaning material to be cleaned, the dirt, the throughput or similar conditions. As an example, reference can be made to cleaning devices, which, for example, in DE 10 2004 056 052 A1 or in DE 10 2007 025 263 A1 are described.
  • cleaning devices are often combined with transport devices or transport systems for the automatic delivery and/or removal of the items to be cleaned.
  • cleaning systems are provided in many facilities for community catering such as canteens in schools, hospitals or other facilities where a large number of people are catered for, in which trays with soiled crockery and cutlery are placed on a conveyor belt to be abandoned.
  • the items to be cleaned are transported to the actual cleaning device, such as a dishwasher.
  • the items to be cleaned are usually sorted using staff, waste is disposed of, and crockery, cutlery and trays are fed to the cleaning device in a suitable manner, for example a conveyor belt dishwasher, a rack conveyor dishwasher or a hood dishwasher.
  • manual labor is still required when loading the contaminated items to be cleaned into the cleaning device and/or also when removing the cleaned items to be cleaned from the cleaning device.
  • a technical and organizational challenge is that the soiled items to be cleaned are not evenly distributed.
  • peak loads often occur, but also times when there are only few or no items to be cleaned.
  • personnel planning must be designed in such a way that the personnel can cope with the peak loads, which, however, under certain circumstances outside of the peak loads, leads to insufficient utilization of the staff. In many cases, personnel planning must therefore be oversized.
  • a dishwasher in the form of a commercial utensil or dishwasher designed as a program machine, which is designed as a hood or pass-through dishwasher and has a treatment chamber with at least one washing system designed as a recirculation system.
  • a loading/unloading device is assigned to the dishwasher, for preferably selectively automatically loading the treatment chamber with items to be washed and/or for preferably optionally automatic unloading of items to be washed from the treatment chamber.
  • DE 10 2004 049 392 A1 describes a method for transporting items to be cleaned through a conveyor-type dishwasher and onto a conveyor-type dishwasher.
  • the conveyor dishwasher comprises a washing zone, a final-rinse zone and a drying zone.
  • the items to be cleaned are cleaned in the washing zone, rinsed in the rinsing zone and dried in the drying zone.
  • Transport facilities are provided with which the Items to be cleaned are transported in the conveying direction with the optimal transport speed for the process steps taking place in the respective zones.
  • WO 2012/173479 A1 describes a dishwasher including integrated conveyor devices.
  • the gripping positions of supplied items of dirty dishes are detected by an electronic image processing system.
  • a piece of crockery is gripped by a gripping element of a manipulator.
  • the gripping member has a grip body and a pair of fingers extending from the grip body. Each finger has an end that carries a clamping element. The fingers can be moved against each other to grip the dishes.
  • the clamping members are rotated about an axis parallel to a line connecting the ends of the fingers to change the orientation of the harness.
  • the picked dishes are placed in a basket that is fed into a washing machine.
  • the electronic image processing system includes a camera for capturing an image of the tableware, a processor for analyzing the image, and a memory for storing dimensions and shapes of edges of different types of tableware.
  • the processor is configured to detect a shape in the image, determine a dimension that corresponds to the shape in the image, and the dimension that corresponds to the shape in the image with the stored dimensions of shapes of the different types of tableware to compare.
  • the cleaning system and the method should enable more flexible personnel planning with regard to the operating personnel and preferably reduce the use of operating personnel.
  • the terms “have”, “have”, “comprise” or “include” or any grammatical deviations thereof are used in a non-exclusive manner. Accordingly, these terms can refer both to situations in which, apart from the features introduced by these terms, no further features are present, or to situations in which one or more further features are present.
  • the expression “A has B”, “A has B”, “A comprises B” or “A includes B” can both refer to the situation in which, apart from B, no other element in A is present (ie to a situation in which A consists exclusively of B), as well as to the situation in which, in addition to B, there are one or more other elements in A, e.g. element C, elements C and D or even further elements .
  • a cleaning system for cleaning items to be cleaned comprises at least one cleaning device and at least one transport system as components.
  • cleaning system as used herein is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. Thus, a “system” can generally be understood as a device or a group of interacting devices that are set up to fulfill at least one common purpose. Accordingly, the term “cleaning system” can, without limitation, relate in particular to a system which is set up to carry out at least one cleaning process, ie to completely clean the items to be cleaned or partially free from adhering contaminants and/or microbial contaminants.
  • transport system as used herein is also a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning. The term can, without limitation, relate in particular to a system in the sense of the above definition, which is used to transport one or more elements or objects, such as in the present case, in particular, the transport of items to be cleaned.
  • cleaning device is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art.
  • the term is not limited to any specific or adapted meaning.
  • the term can, without limitation, relate in particular to a device which is set up to free items to be cleaned from adhering macroscopic or else microscopic contamination or to at least partially eliminate such contamination.
  • a disinfection effect can optionally be exercised.
  • the cleaning device can be designed in particular as a dishwasher, in particular as a dishwasher.
  • the dishwasher can be designed, for example, as a single-chamber dishwasher, in particular as a commercial single-chamber dishwasher with a multi-circuit washing system, or as a conveyor dishwasher, in particular as a flight-type dishwasher and/or as a rack conveyor dishwasher. Examples are detailed below.
  • cleaning items as used herein is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term can, without limitation, refer in particular to any objects that can be cleaned by means of the cleaning device.
  • One object can be cleaned, or several objects can be cleaned simultaneously or sequentially.
  • the items to be cleaned can be items that are used directly or indirectly for the preparation, storage or presentation of food, for example crockery, cutlery, trays, bowls, glasses, pots, pans or similar items.
  • the cleaning device can be designed in particular as a dishwasher, for example as a dishwasher for commercial use in canteen kitchens or communal catering kitchens. In principle, other configurations of the cleaning device and/or the items to be cleaned are also possible.
  • the cleaning device has at least one at least partially closed cleaning chamber with at least one application device for applying at least one cleaning liquid to the items to be cleaned.
  • cleaning chamber is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art.
  • the term is not limited to any specific or adapted meaning.
  • the term may refer, without limitation, to a fully or partially enclosed chamber within which the cleaning process may be fully or partially performed.
  • the cleaning chamber can in particular have at least one housing which completely or partially encloses the cleaning chamber.
  • a single cleaning chamber can be provided, or, in principle, a plurality of cleaning chambers can also be provided, for example sequentially.
  • the cleaning chamber can, for example, have at least one opening for loading the cleaning chamber with the items to be cleaned.
  • this can be an opening with a flap arranged on a front side of the cleaning chamber and/or a top side of the cleaning chamber.
  • hoods are also possible to close off the cleaning chamber, for example in the context of so-called hood dishwashers.
  • the cleaning chamber can also be designed entirely or partially as a tunnel, for example in the context of so-called tunnel dishwashers or conveyor dishwashers, for example as a tunnel with an inlet opening and an outlet opening. In principle, other configurations are also possible.
  • the term "applying device” as used herein is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term can, without limitation, relate in particular to any device in principle, by means of which the cleaning liquid can be applied to the items to be cleaned inside the cleaning chamber.
  • the application device can comprise at least one nozzle system.
  • the application device can include at least one pump and at least one line system for providing cleaning fluid to the nozzle system.
  • a nozzle system and a line system for applying cleaning liquid from a tank can be provided, as well as at least one corresponding pump.
  • At least one nozzle system can also be acted upon directly from a supply line, without a pump being required for this.
  • One or more cleaning zones can be provided in the cleaning device, through which the items to be cleaned, for example, pass sequentially.
  • a single cleaning zone can be provided, with the cleaning device being set up to use the loading device to carry out a cleaning program in which the items to be cleaned are held stationary in the cleaning chamber and are successively loaded with cleaning liquid in different ways in one or more cleaning steps of the cleaning program.
  • the items to be cleaned can also be transported one after the other through a plurality of cleaning zones, in which a different type of application of cleaning liquid takes place, for example one or more cleaning zones selected from the group consisting of: a pre-cleaning zone; a washing zone; a post-rinse or final-rinse zone, which can be further subdivided into a pump final-rinse zone and a downstream fresh-water final-rinse zone.
  • at least one drying step can be provided, which can be carried out, for example, in one chamber after the application of the cleaning liquid when the items to be cleaned are held stationary, or which can take place, for example, in a conveyor dishwasher in a drying zone downstream of the liquid cleaning zones.
  • cleaning liquid is a broad term which should be given its ordinary and ordinary meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term can, without limitation, relate in particular to a liquid which, when it hits the items to be cleaned, can develop a cleaning effect.
  • the cleaning liquid can include an aqueous liquid, for example water and/or water with one or more additives, for example with one or more cleaning concentrates and/or rinse aids and/or disinfectants.
  • the cleaning device can be set up to use a single cleaning liquid or to use a combination of several cleaning liquids. If several cleaning liquids are provided, the different cleaning liquids can be applied to the items to be cleaned simultaneously or sequentially.
  • the items to be cleaned can remain stationary within the cleaning chamber and in succession with the various Cleaning liquids and / or cleaning fluids are applied.
  • the items to be cleaned can also be transported sequentially through a plurality of cleaning zones in which, for example, different types of cleaning liquid and/or cleaning liquids of different degrees of purity are applied.
  • Different degrees of cleanliness can be generated, for example, by a cascade overflow between different tanks of the cleaning device, with a degree of cleanliness preferably increasing in the direction of transport. Pumped systems that regulate the liquid balance and the degree of cleanliness between the individual tanks of the cleaning device can also be used.
  • the transport system is set up for the automatic transport of the items to be cleaned.
  • “Automatic” transport of the items to be cleaned can be understood to mean, in particular, transport in which the items to be cleaned are transported from at least a first location or area to at least a second location or area without muscle power being required to move the items to be cleaned.
  • the automatic transport can take place using at least one electromechanical transport device, for example using at least one electromechanical drive such as at least one electric motor.
  • the term "conveyor” as used herein is a broad term that should be given its ordinary and current meaning, as those skilled in the art will she understands. The term is not limited to any specific or adapted meaning.
  • the term can refer, without limitation, in particular to a device that is set up to convey the items to be cleaned.
  • the conveyor device can have at least one device selected from the group consisting of: a conveyor belt; a conveyor chain; a roller or roller system for conveyance.
  • the conveyor device can also be set up to transport items to be cleaned indirectly, for example in baskets.
  • the baskets can be placed on slide rails, for example, and transported by means of a reversing latch transport system. Combinations of the devices mentioned are also possible.
  • the first conveying device and the second conveying device can be designed in the same way or else differently.
  • Contaminated items to be cleaned can generally be understood to mean items to be cleaned which have not yet been subjected to cleaning by the cleaning device, regardless of their actual degree of contamination, for example by leftover food.
  • Transporting in can generally be understood to mean the transport of the soiled items to be cleaned away from at least one delivery point, in particular to the second conveyor device or to an optional further conveyor device connected between the first and the second conveyor device.
  • the second conveying device is set up to transport the soiled items to be cleaned to the cleaning device, for example to an input area or task area of the cleaning device.
  • the cleaning device itself can optionally include at least one third conveying device which is set up to transport the items to be cleaned through the cleaning chamber.
  • the cleaning system can be set up to transfer the items to be cleaned from the second conveyor device to the third conveyor device, for example by the second conveyor device adjoining the third conveyor device, so that the items to be cleaned are transferred directly or indirectly from the second conveyor device to the third conveyor device.
  • the second and third conveying device can also be completely or partially identical in terms of components, so that the second conveying device is also set up to transport the items to be cleaned completely or partially through the cleaning chamber.
  • the second conveyor device can have at least one area outside the cleaning chamber, in which the items to be cleaned are transferred from the first conveyor device to the second conveyor device, and at least one other area inside the cleaning chamber, in which the items to be cleaned enter the cleaning chamber goes through
  • the second conveyor device can also have at least one third area, which is located downstream of the cleaning chamber and which can be set up as an outlet for the cleaned items to be cleaned.
  • the third conveyor device can, for example, have an area in front of the cleaning chamber, in which the items to be cleaned are transferred from the second conveyor device to the third conveyor device, and at least one other area inside the cleaning chamber, in which the items to be cleaned pass through the cleaning chamber.
  • the third conveying device can also optionally have at least one outlet region which is downstream of the cleaning chamber in the transport direction and in which the cleaned items to be cleaned can be removed by the third conveying device.
  • transfer device is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term may refer, without limitation, to a device or system configured to transmit or transfer at least one item from a first device or system to at least one second device or system.
  • this can be an automatic transfer device which carries out the said transfer fully automatically.
  • the transfer device can accordingly have at least one electromechanical actuator, for example at least one gripper and/or at least one sucker or another type of actuator.
  • the transfer device can have at least one positioning system, by means of which the at least one actuator can be positioned spatially, for example in one, two, three or more dimensions.
  • This positioning system can have, for example, one or more rails along which the actuator can be moved.
  • x, y and optionally z positioning can take place.
  • positioning can also take place around specific angular coordinates, for example polar coordinates or cylindrical coordinates.
  • the positioning system can be designed spatially such that both the first conveyor device and the second conveyor device as well as the at least one intermediate store are arranged within a spatial range, for example in a travel range, of the positioning system.
  • the term "cache” as used herein is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term may refer, without limitation, to a device configured to reversibly pick up and release one or more items. These elements can, for example, be of the same type or of different types.
  • the intermediate store can have at least one stacking device for stacking items to be cleaned, wherein the stacking device can be spring-loaded, for example, so that the top piece of the items to be cleaned is kept at an at least approximately constant height, for example.
  • this stacking device can have at least one tray stacker and/or at least one dish stacker, for example.
  • the at least one intermediate store can be designed to be stationary or can optionally also be designed to be movable, for example by having at least one roller system.
  • the buffer store can have at least one tray trolley and/or at least one plate trolley.
  • temporary storage can be understood to mean a process in which at least one element is stored in a stationary or movable manner for a period of time in order to then continue to use this element, for example to transport it further.
  • the transport system is set up to transfer the soiled items to be cleaned from the first conveyor device directly to the second conveyor device, for example (a) by means of the transfer device or (b) without using the transfer device, or to temporarily store them in the intermediate store, for example (a) without Use of the transfer device or (b) by means of the transfer device, and then to be transferred to the second conveyor device, for example by means of the transfer device.
  • the transport system can be set up to transfer the soiled items to be cleaned from the first conveyor device, either directly to the second conveyor device by means of the transfer device, or to temporarily store them in the intermediate store without using the transfer device, and then transfer them to the second conveyor device, for example by means of the transfer device.
  • the transport system can also be set up, for example, to transfer the soiled items to be cleaned from the first conveyor device directly to the second conveyor device, optionally without using the transfer device, or to temporarily store them in the intermediate store using the transfer device, and then transfer them to the second conveyor device, for example by means of the transfer device.
  • optional can be understood generally as an indication of suitability such that the transport system is set up and designed for both of the options mentioned, ie the option of direct transfer to the second conveyor device and the option of intermediate storage. Which of the options mentioned is carried out can, for example, be specified manually and/or can also be determined automatically, for example by controlling the cleaning system, as will be explained in more detail below.
  • the transport system for example the transfer device, can be set up to transfer at least one specific type of soiled cleaning stock.
  • This at least one type to be transferred can be specified or can be specified, for example.
  • plates, crockery in general, glasses or cutlery can be transferred.
  • at least one specific further type can be treated in such a way that it is at least not transferred directly, but is first temporarily stored in the named buffer.
  • a different selection can also be made, for example a selection by counting, for example by only every third piece of items to be cleaned being transferred immediately, while the rest is stored in the intermediate storage, or a similar type of selection.
  • the cleaning system can also be designed in such a way that at certain times or under certain load conditions, the items to be cleaned are transferred from the first conveyor device to the second conveyor device, whereas at other specific times or under other specific load conditions, only part of the items to be cleaned are transferred from the first conveyor device is transferred to the second conveyor device and the remaining part is buffered in the buffer store, or, again alternatively or additionally, the items to be cleaned are completely buffered in the buffer store.
  • the term “at least part of the soiled items to be cleaned” can therefore refer to at least a subset of the items to be cleaned, which can be formed according to specific criteria, with the subset fundamentally also being able to include the entire items to be cleaned.
  • the selection as to which of the three options (i), (ii) and (iii) is to be implemented can be made manually by a user or partially or fully automatically, for example using at least one sensor and/or using at least one specification by a controller , and/or can be specified by a user.
  • An automatic selection can be made, for example, by means of at least one sensor and at least one controller, with the sensor recognizing, for example, a type and/or a degree of utilization of the cleaning system and the controller, for example in accordance with program specifications, using the type and/or utilization, to determine a corresponding select an option.
  • utilization can be quantified based on a number of pieces of cleaning material per unit of time, which can be detected, for example, by means of an optical sensor, with the controller selecting a corresponding option, for example based on a table and/or a predetermined conversion or assignment.
  • self-learning and/or self-optimizing systems and/or programs can also be used in the cleaning system, which also recognize the time of day or the day of the week, for example, and the controller makes a corresponding selection of an option, for example in accordance with program specifications.
  • the buffer store can be designed in such a way that it takes up at least some of the items to be cleaned in the event of unforeseen peak loads, so that there is no accumulation of items to be cleaned at the actual cleaning device or in an outlet of the cleaning device.
  • the same cleaning staff can, for example, alternate between an activity in an outlet area of the cleaning device or cleaning system and an activity in an inlet area of the cleaning device or cleaning system and/or other optional activities, without a backlog occurring in the event of an unforeseen peak load.
  • Due to the buffer which can be used automatically in particular, personnel planning no longer has to be geared towards possible peak loads.
  • the cache can thus generally be used to equalize the workload, so that personnel planning can, for example, be geared towards an average workload.
  • the transfer device can in particular comprise at least one receiving element for receiving items to be cleaned.
  • the term "receptacle” as used herein is a broad term which should be given its ordinary and ordinary meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term can, without limitation, relate in particular to any element or any device which is set up to accommodate at least one item to be cleaned, for example to spatially position it in at least one, preferably two or even three or more dimensions.
  • the receiving element can have at least one element selected from the group consisting of: a gripper; a sucker; a magnet.
  • other types of receiving elements in particular other types of actuators, can also be provided.
  • the transfer device can have at least one positioning device for positioning the receiving element.
  • a positioning device can generally be understood to mean any device that is set up to spatially position at least one element, for example in one, two, three or more dimensions.
  • the at least one positioning device can have at least one rail system, for example, in order to spatially variably position at least one actuator of the transfer device.
  • the at least one positioning device can also have at least one pivot axis in order to variably position the at least one actuator in at least one spatial position.
  • Other types of systems that enable spatial movement and/or positioning of an actuator are also conceivable, for example using at least one tripod.
  • the cleaning device can in particular include at least one dishwasher.
  • the dishwasher can in particular be selected from the group consisting of: a rack conveyor machine, a belt conveyor machine, a pass-through dishwasher, for example a hood-type dishwasher.
  • the cleaning device can include at least one dishwasher.
  • the buffer store can in particular comprise at least one tray buffer store which is designed to accommodate a plurality of food trays.
  • the Intermediate tray storage can in particular have at least one spring-loaded support surface, ie at least one support surface which is subjected to a spring force by at least one spring element.
  • the spring-loaded support surface can be configured to maintain an uppermost food tray in a stack of food trays stacked on the support surface at a substantially constant height, regardless of the number of trays in the stack.
  • the first conveyor device and the second conveyor device can, in particular, run offset parallel to one another, at least in a transfer area.
  • a transfer area can generally be understood to mean a spatial area which comprises at least one section of the first conveyor device and at least one section of the second conveyor device and optionally also the transfer device or a part thereof, the transfer device being set up to carry out the above-described transfer area within the transfer area to make the transfer.
  • the first conveyor device and the second conveyor device can be aligned parallel to one another, at least in sections, in particular in this transfer region.
  • the transfer device can be arranged at least partially in the transfer area and set up to transfer the items to be cleaned perpendicular to a conveying direction of the first conveying device and perpendicular to a conveying direction of the second conveying device from the first conveying device to the second conveying device.
  • the first conveying direction and the second conveying direction therefore each preferably form an essentially right angle with a direction of transfer, with deviations of no more than 20°, in particular no more than 10° or even no more than 5° being tolerable, for example.
  • the buffer store can in particular be arranged at least partially in an extension of the first conveying device in a conveying direction of the first conveying device.
  • a section of the first conveyor device from which the transfer takes place and a section of the second conveyor device into which the transfer takes place and the buffer store can form a right-angled triangle.
  • the intermediate store can be arranged at least partially in an extension of the second conveyor device counter to a conveying direction of the second conveyor device.
  • a section of the first conveyor device from which the transfer takes place and a section of the second conveyor device into which the transfer takes place and the buffer store can form a right-angled triangle.
  • This constellation in which a section of the first conveyor device, from which the transfer takes place, and a section of the second conveyor device, into which the transfer takes place and the buffer store forms a right-angled triangle can bring about a particularly simple configuration of the transfer device, which can comprise a simple xyz positioning system, for example.
  • a transfer to the buffer store can then be designed, for example, as a simple movement in the y-direction, whereas a transfer to the second conveyor device can be designed as a simple movement in the x-direction.
  • the temporary store can in particular be designed to be mobile, for example as a transport vehicle.
  • the buffer store can include at least one tray trolley.
  • the buffer can also be exchanged temporarily, especially when it is full.
  • the cleaning chamber can in particular be designed at least partially as a cleaning tunnel.
  • the cleaning device can have at least two cleaning zones in the cleaning tunnel, for example, with the transport system being set up, in particular by means of the second conveyor device and/or a third conveyor device, to transport the items to be cleaned sequentially through the cleaning zones.
  • the cleaning zones can in particular comprise at least two zones selected from the group consisting of: a pre-cleaning zone, a washing zone, a pump rinsing zone, a fresh water rinsing zone; a drying zone.
  • the cleaning device can in particular have at least one third conveying device, which can be configured entirely or partially separately from the second conveying device or which can also be configured entirely or partially together with the second conveying device.
  • This third conveying device can, for example, directly or indirectly adjoin the second conveying device.
  • the third conveying device can in particular be set up to transport items to be cleaned through the cleaning chamber.
  • the third conveying device can thus also be part of the cleaning device and/or can also be conceptually assigned to the transport system in whole or in part.
  • the cleaning system can in particular also include at least one controller.
  • the controller can be programmed to control operation of the transport system and optionally also the cleaning device.
  • control as used herein is a broad term which should be given its ordinary and current meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term can, without limitation, refer in particular to a one-part or multi-part device of the cleaning system or the cleaning device, which is set up to completely or partially control and/or to operate the cleaning system, in particular the cleaning device and/or the transport system regulate.
  • the controller can be set up to change one or more operating parameters of the cleaning system, in particular to control and/or regulate them, for example at least one temperature, at least one pressure, at least one heating output, at least one transport speed or a combination of two or more of the mentioned operating parameters.
  • the cleaning device and the transport system can have separate controls or a common control or two or more coupled controls.
  • the controller can include at least one data processing device, for example at least one processor.
  • the controller can in particular be set up in terms of programming, for example to control at least one cleaning program of the cleaning device and optionally to control or carry out the proposed method in one or more of the configurations mentioned below.
  • the controller can be set up completely or partially by hardware and/or alternatively or additionally, fully or partially by software.
  • the controller can include at least one volatile and/or non-volatile data memory.
  • the controller can include at least one interface, for example a man-machine interface for inputting commands and/or for outputting information, and/or a wireless or wired interface for unidirectional or bidirectional exchange of data and/or commands between the cleaning device and at least one other device.
  • the controller can include at least one computer and/or at least one processor.
  • the control can be a central or decentralized machine control of the cleaning device and/or the cleaning system and/or the transport system.
  • the cleaning system can also have at least one sensor for detecting items to be cleaned.
  • Various options can be implemented under “recognition”. For example, a pure presence detection can take place, in which it is only detected that the items to be cleaned are present. Alternatively or additionally, a type of item to be cleaned can also be recognizable by means of the at least one sensor.
  • the controller can in particular be set up in terms of programming in order to recognize different degrees of utilization of the cleaning system on the basis of signals from the sensor and to use the buffer memory differently in accordance with the degrees of utilization to use. For example, as explained above, distinctions can be made with regard to the options (i) to (iii) to be carried out.
  • the controller can be set up, for example in terms of programming, to automatically collect at least part of the items to be cleaned in the temporary store when utilization is high and then to transfer them to the second conveyor device, for example in a collected manner.
  • a collected transfer can include, for example, that the individual parts of the items to be cleaned are transferred to the second conveyor device without interruption and the intermediate store is thus emptied.
  • a current capacity utilization can be quantified by a current frequency of a delivery of items to be cleaned by the first conveyor device, for example quantified as the number of items of items to be cleaned per minute.
  • a "high utilization" can then be understood, for example, as a frequency which is greater than or at least equal to a predefined or definable threshold value. For example, at peak times, the cleaning device can be relieved without requiring a cleaning device with a higher capacity. A standstill in the feed can also be avoided.
  • the controller can also be set up, for example by programming, to automatically collect at least a portion of the items to be cleaned in the temporary store when utilization is low and then to transfer them to the second conveyor device, for example collected.
  • a "low utilization" can then be understood, for example, as a frequency which is less than or at most equal to a predefined or definable threshold value.
  • the presence of operating personnel can be dispensed with, at least for a certain period of time, by temporarily storing at least part of the items to be cleaned that have been delivered in the buffer store.
  • the transfer from the intermediate store to the second conveyor device can then take place, for example manually initiated or also automatically.
  • the period of time for the temporary storage can be dimensioned in such a way that the transfer takes place when the collected items to be cleaned have reached a predetermined quantity, in particular when the temporary storage is full.
  • the optional at least one sensor can also be set up to differentiate between different types of items to be cleaned. For example a distinction can be made between trays and other types of items to be cleaned.
  • the controller can be set up, for example, to store at least one specific type of items to be cleaned, for example trays, in the buffer store. Other types of items to be cleaned can, for example, be transferred directly onto the second conveyor device.
  • the sensor can implement one or more sensor principles.
  • the sensor can comprise at least one sensor selected from the group consisting of: an optical sensor; a camera; a metal detector; a light barrier; a mechanical button; an electromagnetic sensor.
  • the sensor includes at least one camera, the sensor itself and/or the controller can include, for example, at least one image recognition software set up to distinguish at least two different types of items to be cleaned.
  • the controller can include at least one programmatic algorithm for distinguishing between at least two types of items to be cleaned on the basis of image data.
  • the controller can be trained, for example, to certain types of items to be cleaned and how to recognize them, for example by comprising at least one self-learning algorithm, for example at least one neural network.
  • the control of the transfer device can, for example, be adapted to the recognized type of items to be cleaned. In particular, based on the identified type of items to be cleaned, a selection can also be made as to whether a transfer to the intermediate store or to the second conveyor device takes place. Furthermore, the controller can also be set up, for example, in such a way that the transfer device is adapted to the type of item to be cleaned that has been identified. For example, a suitable receiving element can be selected automatically for the type of items to be cleaned. For example, a sucker can be used for plates or other types of crockery, while a magnet can be used for cutlery. For example, a gripper can be used for trays.
  • a method for cleaning items to be cleaned is proposed.
  • the method includes the steps detailed below. These steps can be performed in the order listed. However, a different sequence is also possible in principle. Furthermore, two or more of the method steps mentioned can be carried out with a time overlap or at the same time. Furthermore, one or more of the process steps mentioned can be carried out once or else repeatedly. In addition to the steps mentioned, the method can comprise further method steps which are not mentioned.
  • the method can be designed in such a way that at least two types of soiled items to be cleaned are distinguished. At least a first type of soiled cleaning stock can be transferred directly from the first conveyor to the second conveyor, and at least a second type of soiled cleaning stock can be transferred from the first conveyor to the second conveyor after intermediate storage in the buffer.
  • the transfer can take place in particular in such a way that during phases with a high accumulation of contaminated items to be cleaned, for example once again when at least one threshold value of the frequency of the transport of items to be cleaned and/or a certain type of items to be cleaned is exceeded, at least a part of the contaminated items to be cleaned is stored in the intermediate store is and is then transferred to the second conveyor device, for example collected.
  • At least part of the soiled items to be cleaned can be stored in the buffer store are and then transferred to the second conveyor, for example collected.
  • operation of the cleaning device can be synchronized with the transfer of the contaminated items to be cleaned.
  • the cleaning device and/or an operation of the application device can be switched in such a way that an application only takes place when items to be cleaned are actually present in the cleaning device.
  • resources in particular energy and/or consumables such as cleaning fluid, can be saved and adapted to actual needs.
  • the synchronization can in particular take place automatically.
  • the synchronization can also include an adjustment of a program selection. For example, initially only crockery can be transferred to the second conveying device, whereas trays, for example, are initially temporarily stored in the buffer store.
  • the cleaning device can be set to at least one special dishwashing program, for example.
  • the trays can then be transferred from the buffer store to the second conveyor device, and the cleaning device can then be set, for example, to at least one special tray program.
  • the first conveying device can be switched off, switched to a lower speed or, in particular when there is little accumulation of contaminated items to be cleaned, continue to run at the previous speed.
  • the proposed cleaning system and the proposed method enable the realization of a large number of advantages.
  • personnel planning can be significantly more flexible, since operating personnel do not have to be constantly provided in the inlet area of the cleaning device.
  • other savings opportunities can also be used, for example through a higher degree of automation or by adapting the operation of the cleaning device to the items actually being cleaned, including the possibility of phased shutdown, the possibility of reducing operation or the possibility of a selection a suitable program.
  • smaller dimensions of the hardware of the cleaning system can also be achieved with the proposed cleaning system and the proposed method.
  • the components of the cleaning system usually have to be adapted to an expected peak load in conventional cleaning systems. This means in particular that generally oversized cleaning devices have to be used.
  • At least one buffer store With the possibility of using at least one buffer store, however, at least one buffer can be created, which can intercept a short-term peak load without having to dimension the cleaning device itself would have to be adapted to this peak load. In this way, significant savings can be achieved in terms of the complexity, space requirements and costs of the cleaning system.
  • FIG 1 An embodiment of a cleaning system 110 is illustrated in a perspective view.
  • the cleaning system 110 is set up in particular for cleaning items to be cleaned 112 and comprises at least one cleaning device 114.
  • the cleaning device 114 comprises at least one at least partially closed cleaning chamber 116 with at least one application device 118 for applying at least one cleaning liquid to the items to be cleaned 110.
  • the cleaning chamber 116 of the cleaning device 114 can be configured, for example, as a cleaning tunnel, as shown in FIG figure 1 illustrated.
  • the cleaning tunnel can have a number of cleaning zones, for example.
  • the items to be cleaned 112 can first be roughly cleaned in a pre-cleaning zone 120 .
  • a pre-clearance nozzle system 122 can be located within the pre-clearance zone 120 , which can be part of the application device 118 .
  • the pre-cleaning zone 122 can be adjoined by a washing zone 124, within which at least one main cleaning nozzle system 126 can be located, for example, which can also be part of the impingement device 118.
  • a clear-rinse zone 128, for example, can be connected to the pre-cleaning zone, which can be divided, for example, into a pump clear-rinse zone and a fresh-water clear-rinse zone.
  • a final-rinse nozzle system 130 for example a pump-type final-rinse nozzle system and/or a fresh-water final-rinse nozzle system.
  • the nozzle systems 122, 126 and 130 can, for example, via in figure 1 pumps, not shown, from corresponding tanks 132 to 136 are supplied with cleaning fluid.
  • the cleaning zones 120, 124 and 128 can each be separated from one another and/or from the outside by curtains 138.
  • the cleaning zones 120, 124 and 128 can be referred to, for example connect at least one drying zone 140.
  • the items to be cleaned 112 can be subjected to air, preferably heated air, in particular by means of a blower 142, for example in order to dry the items to be cleaned 112.
  • the cleaning system 110 also has a transport system 144 for the automatic transport of the items 112 to be cleaned.
  • Transport system 144 includes at least one first conveyor device 146 for transporting contaminated items to be cleaned 112.
  • transport system 144 includes at least one second conveyor device 148 for transporting contaminated items to be cleaned 112 to cleaning device 114.
  • transport system 144 includes at least one transfer device 150 for transferring at least one part of the soiled items to be cleaned 112 from the first conveyor device 146 to the second conveyor device 148.
  • the transport system 144 also comprises at least one intermediate store 152 for temporarily storing at least some of the soiled items to be cleaned 112.
  • the transport system 144 is set up to transport the soiled items to be cleaned 112 from the first Conveyor device 146 to be transferred either directly to the second conveyor device 148 or to be temporarily stored in the buffer store 152 and then to the second conveyor device 1 48 to transfer.
  • the second conveyor device 148 can be set up to transport the contaminated items to be cleaned 112 to the cleaning device 114, for example to an input area 154 of the cleaning device 114.
  • the cleaning device 114 can optionally include at least one third conveyor device 156, which is set up to transport the items to be cleaned 112 to be transported through the cleaning chamber 116 therethrough.
  • the cleaning system 110 can be set up to transfer the items to be cleaned 112 from the second conveyor device 148 to the third conveyor device 156, for example by the second conveyor device 148 adjoining the third conveyor device 156, so that the items to be cleaned 112 are transferred directly or indirectly from the second conveyor device 148 is transferred to the third conveyor 156, such as in figure 1 illustrated.
  • a conveying direction of the respective conveying devices 146, 148 and 156 can be illustrated in the figures by arrows.
  • the cleaning system 110 can have a controller 158 .
  • the controller 158 can in particular be set up in terms of programming in order to control an operation of the cleaning system 110 .
  • the cleaning system 110 can also include at least one sensor 160 for detecting items 112 to be cleaned.
  • the controller 158 can be programmed to recognize different degrees of utilization of the cleaning system 110 based on signals from the sensor 160 and to use the buffer 152 differently according to the degree of utilization.
  • controller 158 can be set up, for example, to automatically collect at least some of the items to be cleaned 112 in intermediate storage 152 when utilization is high, for example in order to subsequently transfer the items to be cleaned 112 in bulk to the second conveyor device 148, particularly when the collected items to be cleaned 112 has reached a predetermined amount.
  • the sensor 160 can be set up to distinguish between different types of items 112 to be cleaned.
  • the controller 158 is set up to handle at least one specific type of items to be cleaned, for example trays as in figure 1 shown to be stored in the buffer 152.
  • FIG 2 a detail from an exemplary embodiment of a cleaning system 110 is shown.
  • the buffer 152 particularly a tray buffer 162
  • the tray buffer may be configured to receive a plurality of food trays 164.
  • the intermediate tray store 162 can have a spring-loaded support surface 166, for example.
  • the spring-loaded support surface 166 can be configured to keep an uppermost food tray 164 in a stack of food trays 164 stacked on the support surface 166 at a constant height, particularly regardless of the number of food trays 164 in the stack.
  • the intermediate tray store 162 can have a sensor 168 which can be set up, for example, to detect the filling level of the intermediate tray store 162 .
  • the controller 158 can preferably be used to initiate the transfer of the food trays 164 to the second conveyor device 148, for example by means of the transfer device 150, in order to completely or partially empty the intermediate tray store 162 for a short time.
  • the transfer device 150 can in particular comprise at least one receiving element 170 for receiving the items to be cleaned 112 .
  • the receiving element 170 can have at least one sucker 172 for this purpose, for example.
  • the suction device 172 can pick up the items to be cleaned 112, in particular by generating a negative pressure.
  • the transfer device 150 can furthermore have at least one positioning device 174 for positioning the receiving element 170 .
  • the positioning device 174 as in figures 2 and 3 illustrated, have a rail system to spatially position the receiving element 170, for example by moving the receiving element 170 in the directions symbolized by arrows.
  • At least two types of soiled items to be cleaned can be distinguished.
  • a first type 175 of soiled items to be cleaned 112 can be transferred directly from the first conveyor device 146 to the second conveyor device 148 .
  • a second type 176 of soiled items to be cleaned 112 can be transferred from the first conveyor device 146 to the second conveyor device 148 after intermediate storage in the intermediate store 152 .
  • the transfer in particular in method step III., can take place in such a way that during phases with a high accumulation of contaminated cleaning stock 112, at least part of the contaminated cleaning stock 112 is sorted, for example according to type, for example separated into first type 176 and second type 176 , in which buffer 152 is stored.
  • buffer 152 is stored in phases in which the accumulation of contaminated items to be cleaned 112 is above a threshold value for a frequency of a transport of contaminated items to be cleaned 112, for example as a function of a cleaning line of cleaning device 114.
  • a transfer of the collected soiled items to be cleaned 112 to the second Conveyor 148 done.
  • an operation of the cleaning device can be synchronized with the collected transfer of the contaminated cleaning stock 112 .

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  • Washing And Drying Of Tableware (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP19755911.5A 2018-08-22 2019-08-19 Reinigungssystem und verfahren zur reinigung von reinigungsgut Active EP3840626B1 (de)

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DE102018214167.3A DE102018214167A1 (de) 2018-08-22 2018-08-22 Reinigungssystem und Verfahren zur Reinigung von Reinigungsgut
PCT/EP2019/072155 WO2020038893A1 (de) 2018-08-22 2019-08-19 Reinigungssystem und verfahren zur reinigung von reinigungsgut

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JP (1) JP7194808B2 (es)
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JP7194808B2 (ja) 2022-12-22
CA3108608A1 (en) 2020-02-27
ES2927686T3 (es) 2022-11-10
KR20210044236A (ko) 2021-04-22
US20210267431A1 (en) 2021-09-02
DK3840626T3 (da) 2022-10-17
AU2019323616A1 (en) 2021-03-04
PL3840626T3 (pl) 2022-12-12
EP3840626A1 (de) 2021-06-30
JP2021533926A (ja) 2021-12-09
SG11202101677XA (en) 2021-03-30
CN112584732B (zh) 2024-04-30
CN112584732A (zh) 2021-03-30
WO2020038893A1 (de) 2020-02-27
DE102018214167A1 (de) 2020-02-27
US11944252B2 (en) 2024-04-02

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