EP3714757A1 - Système de dosage - Google Patents

Système de dosage Download PDF

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Publication number
EP3714757A1
EP3714757A1 EP20163388.0A EP20163388A EP3714757A1 EP 3714757 A1 EP3714757 A1 EP 3714757A1 EP 20163388 A EP20163388 A EP 20163388A EP 3714757 A1 EP3714757 A1 EP 3714757A1
Authority
EP
European Patent Office
Prior art keywords
tablet
cleaning
detergent
dosing system
receiving
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.)
Withdrawn
Application number
EP20163388.0A
Other languages
German (de)
English (en)
Inventor
Meinrad Budich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Budich International GmbH
Original Assignee
Budich International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Budich International GmbH filed Critical Budich International GmbH
Publication of EP3714757A1 publication Critical patent/EP3714757A1/fr
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • 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
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4436—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of a detergent solution made by gradually dissolving a powder detergent cake or a solid detergent block
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B01F21/20—Dissolving using flow mixing
    • B01F21/22—Dissolving using flow mixing using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles
    • B01F21/221—Dissolving using flow mixing using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles comprising constructions for blocking or redispersing undissolved solids
    • 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

Definitions

  • the invention relates to a metering system for metering detergent for, preferably commercial, dishwashers, washing machines and / or kitchen machines, comprising a receiving device for receiving at least one detergent tablet, a solvent dispensing device and a detergent solution collecting device.
  • the invention further relates to a cleaning tablet, a method for dosing a cleaning agent and a dosing system set with a dosing system and a cleaning tablet.
  • a dosing system with a detergent container in block or powder form is from the patent application DE 10 2007 058 589 A1 known.
  • the detergent container is arranged in a cartridge and with this forms a dissolving chamber which is exposed to a solvent via an inlet and from which a detergent concentrate is discharged.
  • the Japanese patent application JP 2971968 relates to a dosing system with at least one cleaner block, the cleaner block being removed or dissolved from below with a solvent in a dissolving chamber.
  • the detergent solution created in the dissolving chamber is discharged via an overflow into a device to be cleaned (e.g. washing machine or dishwasher).
  • the respective detergent container is placed in a dissolving chamber in a solvent dissolved and the resulting cleaning solution is then discharged to a device to be cleaned.
  • the above-mentioned dosing systems have the disadvantage that the detergent container is not removed evenly. If the cleaner block is solid, for example, the surface of the cleaner block moves upwards (if the lower area of the block is in a dissolving tank) or downwards (if the cleaner block is detached by a liquid above the cleaner block). In any case, the detergent tablets to be dissolved in this way result in dynamically changing, undefined rinsing conditions.
  • loosening a detergent container in a dissolving chamber can lead to sludge build-up of the detergent in the cartridge or the dosing system. This can lead to the dosing system in question having to be serviced or cleaned regularly and at great expense.
  • the constant detachment of the detergent in the dissolving chamber makes it more difficult to dose the active detergent substance and there is, for example, a concentration gradient of the active detergent in the dissolving chamber.
  • a dosing system i.e. a system for the automatic dosing of a cleaning agent, for, preferably commercial, dishwashers, washing machines and / or kitchen machines, comprises, as mentioned at the beginning, a receiving device, at least one solvent dispensing device and a cleaning solution collecting device.
  • the receiving device for receiving at least one cleaning tablet has a liquid-permeable shelf or storage surface for arranging at least one cleaning tablet in a receiving area arranged above the shelf.
  • a receiving area is the area of the dosing system in which at least one cleaning tablet is arranged during operation.
  • the receiving area extends (vertically) from the liquid-permeable tray upwards, possibly up to an upper boundary of the receiving device.
  • the at least one solvent dispensing device is designed to dispense a solvent during operation onto the cleaning tablet arranged in the receiving device, the solvent dispensing device having at least one lance-like nozzle device projecting into the receiving area.
  • This nozzle device can, for. B. via a suitable solvent inlet of the solvent dispensing device Solvent are supplied, which is then blasted from the nozzle device onto the cleaning tablet.
  • the nozzle device comprises an elongated hollow body that can be inserted into something and through which something can flow (here e.g. the solvent).
  • This nozzle device or the “lance” of the nozzle device extends at least as far as an end point or free end of the lance located in the receiving area, hereinafter also referred to as the “lance tip” regardless of the specific shape.
  • This “lance” or the elongated hollow body can in particular be designed in the manner of a cylinder, at least in sections. But it can also have another shape, e.g. conical to the lance tip etc.
  • Such a nozzle device is designed to dispense a solvent into an opening and / or onto a preferably upwardly facing face of the detergent tablet via at least one nozzle during operation (in this context, reference is made to the explanations below on the special embodiments of the detergent tablet according to the invention) .
  • a solvent is a liquid suitable for dissolving the cleaning tablet in order to form a cleaning solution suitable for cleaning.
  • a preferred solvent is water, in particular tap or process water.
  • cleaning agent or the like within the scope of the invention is also representative of rinse aid and / or decalcifying agent used in the dosing system according to the invention in corresponding configurations is used.
  • a detergent solution collecting device of the dosing system is designed to catch the detergent solution produced when the detergent tablet is rinsed with the solvent and, if necessary, to absorb or collect it in order to make it available to the other components of an (automatic) cleaning system of the machine or for running and / or to maintain subsequent cleaning processes.
  • standing detergent solution is to be understood in such a way that the volume of the detergent solution that has already been captured or accumulated has formed a liquid level (a horizontal surface).
  • the detergent solution collecting device is designed in such a way that contact of a detergent tablet received in the receiving device with such a standing detergent solution is avoided or is at least avoided beyond a defined maximum period.
  • the complete avoidance of contact between the detergent tablet and the standing detergent solution is particularly preferred.
  • a “defined maximum period” is understood to mean a period of time in which the detergent tablet may be exposed to contact with a standing detergent solution. This is specified so that the detergent tablet is not significantly dissolved by the standing detergent solution. A permissible maximum period can therefore depend on the specific composition of the cleaning tablet.
  • the defined maximum time period can preferably be a maximum of 120 seconds, more preferably a maximum of 60 seconds and particularly preferably a maximum of 30 seconds.
  • the cleaning tablet does not come into contact with the standing cleaning solution.
  • the invention advantageously ensures that the detergent tablet is rinsed off more evenly and essentially prevents the detergent from becoming silted up in the receiving device of the dosing unit.
  • a constant flushing rate of the cleaning agent from the cleaning tablet can be achieved with the dosing system according to the invention, as desired.
  • a cleaning tablet according to the invention for use in the dosing system described above preferably has a composition of at least one alkali source or acid source, of at least one complexing agent, and optionally of at least one filler, and / or at least one bleaching agent, and / or at least one surfactant, and / or at least one tabletting aid.
  • the alkali source e.g. Sodium hydroxide (NaOH), sodium metasilicate, soda (sodium carbonate) and / or potassium carbonate can be used.
  • the proportion by weight of the alkali source in the total detergent tablet is preferably at least 50% and / or at most 80%.
  • a cleaning tablet for decalcification or rinsing applications has at least one acid source.
  • This acid source can be, for example, citric acid, malic acid, sulfamic acid, maleic acid or adipic acid or combinations of the acids mentioned.
  • the proportion by weight of the acid source in the total detergent tablet is preferably 40-95%.
  • Preferred complexing agents are, for example, phosphates, methylglycinediacetic acid (MGDA), nitrilotriacetic acid (NTA), iminodisuccinates, gluconates, citrates, ethylenediaminetetraacetate (EDTA), phosphonates and / or polycarboxylates.
  • the proportion by weight of the complexing agents in the total detergent tablet is preferably at least 10% and / or at most 30%.
  • Sodium sulfate and / or sodium chloride are suitable as fillers.
  • the proportion by weight of the filler in the total detergent tablet is preferably a maximum of 20%.
  • Trichloroisocyanurate or percarbonate can preferably be used as bleaching agents.
  • the weight proportion of the bleach in the total detergent tablet is preferably a maximum of 20%.
  • the weight fraction of surfactants is preferably a maximum of 5% of the total weight of the detergent tablet.
  • stearates, pyrogenic silica, cellulose, soluble waxes, sugar and starch derivatives and / or polyethylene glycol can be used as tabletting auxiliaries.
  • the weight fraction of tableting aids is preferably 0 to 10% of the total weight of the cleaning tablet.
  • a production method for the cleaning tablet according to the invention for use in the dosing system according to the invention preferably comprises a production step in which the ingredients of the cleaning tablet described above are pressed as bulk granules into a tablet body.
  • the shape of the cleaning tablet ie the tablet body, is preferably adapted essentially to the shape of the receiving area.
  • the base area of the cleaning tablet (that is to say the end face) is essentially designed to be arranged with an accurate fit on the liquid-permeable tray of the receiving device.
  • it preferably has an opening in which the “lance” or the nozzle device can be received.
  • the receiving area is preferably designed in such a way that the cleaning tablet or, if a large number of cleaning tablets are stacked, an uppermost cleaning tablet, can be exposed to a solvent on at least one end face during operation (the cleaning tablet or cleaning tablets therefore fill the vertical extent of the Recording area not completely).
  • a method according to the invention for dosing a cleaning agent for, preferably commercial, dishwashers, washing machines and / or kitchen machines has at least the following steps: First of all, at least one cleaning tablet is arranged on a liquid-permeable shelf or shelf surface of a receiving device of a dosing system in a receiving area located above the shelf.
  • a solvent is then dispensed by at least one solvent dispensing device with a lance-like nozzle device projecting into the receiving area.
  • the solvent is released into an opening and / or onto an end face of the cleaning tablet, preferably pointing upwards, as a result of which the cleaning tablet is essentially detached and / or dissolved by the solvent flowing over.
  • a detergent solution obtained by the process described above is collected by a detergent solution collecting device, contact of a detergent tablet received in the receiving device with the standing detergent solution, as mentioned, preferably being completely avoided or at least avoided beyond a defined maximum period.
  • the cleaning solution collecting device can first collect the cleaning solution in a separate container and then deliver it to a device to be cleaned.
  • the detergent solution collecting device can, however, also be part of the cleaning device itself, for example if the metering system is mounted in an interior of the device to be cleaned, the interior itself can serve as a cleaning solution collecting device.
  • a dosing system set according to the invention comprises a dosing system and at least one cleaning tablet.
  • the shape of the cleaning tablet is preferably essentially adapted to the shape of the receiving area of the dosing system.
  • the dosing system set is also preferably designed so that a large number of detergent tablets, particularly preferably stacked, can be received in the receiving area of the dosing system (further explanations on receiving a large number of cleaning tablets in the receiving area will be given in the further description).
  • a machine according to the invention i.e. a preferably commercial dishwasher, washing machine and / or kitchen machine is equipped (as usual) with a cleaning system and also has at least one dosing system according to the invention, in particular a dosing system set according to the invention.
  • commercial kitchen machines include, in particular, professional cooking devices such as ovens, cooking devices, deep fryers and steamers, but also devices for preparing drinks, such as, for example, fully automatic coffee machines or coffee filter machines.
  • the dosing system can serve to dose the cleaning agent for this cleaning process.
  • the dosing system can also be used to dose the detergent for cleaning the machine itself, i.e. the interior of the machine or the receiving space for the items to be cleaned or washed items and the line systems.
  • it can preferably (also) be used to dose the cleaning agent for the items to be cleaned or items to be washed that are to be cleaned or washed in the machine.
  • the dosing system according to the invention can be arranged outside the machine to be cleaned (hereinafter also referred to synonymously as “device”), that is to say the (commercial) dishwasher, washing machine or kitchen appliance, and connected to it.
  • the devices can B. can be retrofitted. However, it can also be integrated into the relevant devices and in particular form part of a cleaning system of the device.
  • a device to be cleaned can each have a metering system with a cleaning agent and a metering system with a rinse aid / descaler.
  • a dosing system is assigned to several devices to be cleaned, i.e. one dosing system provides detergent solution for several devices.
  • a metering system has a cleaning solution collecting device for a cleaning solution.
  • part of the device to be cleaned can also be the detergent solution collecting device.
  • a cleaning solution standing in a cleaning solution collecting device is preferably arranged spatially separated from a cleaning tablet received in the receiving device of the dosing system.
  • the cleaning solution collecting device can comprise a collecting unit (for example a type of collecting funnel) for collecting the cleaning solution and a cleaning solution collecting container which is spatially separated therefrom for receiving the cleaning solution.
  • a collecting unit for example a type of collecting funnel
  • a cleaning solution collecting container which is spatially separated therefrom for receiving the cleaning solution.
  • the detergent solution can drain from the detergent solution collection device via an (optional) detergent solution drain into the detergent solution collection container (if the detergent solution collection device has a collection unit, the detergent solution drain is arranged under the collection unit).
  • the resulting detergent solution from the receiving device runs during operation via the liquid-permeable tray, the collecting unit and the detergent solution drain essentially in one flow (i.e. without the detergent solution staying in the area of the receiving device beyond the maximum period defined above) into the separate detergent solution collection container.
  • a contact between the detergent tablet and the detergent solution in the collecting container is therefore normally not possible due to the design.
  • the collecting unit and the cleaning solution collecting container of the cleaning solution collecting device are already "integrated" in one component.
  • the cleaning solution collecting container is preferably arranged in the immediate spatial vicinity under the liquid-permeable shelf of the receiving device of the metering system.
  • the detergent solution created during operation In this exemplary embodiment, it drains directly into the cleaning solution collecting container via the liquid-permeable shelf.
  • the detergent solution collection container in this embodiment is arranged directly under the receiving device for the at least one detergent tablet, a spatial separation of the standing detergent solution from the detergent tablet can still be ensured:
  • a spatial separation of the standing detergent solution from the detergent tablet can still be ensured:
  • the detergent tablet according to the invention or at least not longer than the maximum period already defined
  • the liquid level control regulates the liquid level of the standing detergent solution during operation.
  • a suitable point e.g. B. arranged below the liquid-permeable shelf, a liquid level meter in the detergent solution collection container.
  • the solvent delivery to the detergent tablet can then be restricted or switched off, for example by means of a control device, and / or the detergent solution is removed from the detergent solution collecting device by means of a detergent solution supply device (explained below) and Z. B. supplied to the other components of the cleaning system of the device in order not to increase the liquid level any further.
  • the collecting container or cleaning solution collecting container can also be located relatively closely directly below the receiving area of the receiving device, since, as already mentioned, the control of the cleaning tablet can reliably avoid contact of the cleaning solution.
  • the cleaning solution can then be transferred from the cleaning solution collecting container to the device to be cleaned or the relevant (further) components of the cleaning system of the Device are fed.
  • the detergent solution supply device may, for example comprise a hose, tube or the like.
  • the detergent solution supply device may e.g. B. be controlled by a control device.
  • the dosing system comprises at least one solvent dispensing device in order to dispense a solvent onto at least one cleaning tablet.
  • the solvent can be fed through a solvent feed, e.g. a water pipe into which the solvent dispenser is fed.
  • a control device assigned to the solvent feed can control the amount of solvent to be dispensed to the metering system.
  • tap water or process water is preferably used as the solvent, which is fed directly from a water pipe, for example by means of a pump, into the solvent dispensing device, which then dispenses the solvent onto the cleaning tablet by means of the nozzle device.
  • the cleaning solution that has already been obtained is at least partially used as the solvent.
  • the detergent solution that has already been obtained can be fed from the detergent solution collecting container, for example by means of a pump, into the solvent dispensing device, which then dispenses the solvent onto the detergent tablet. This can be particularly advantageous if, for example, an increase in the concentration of the cleaner in the cleaner solution is desired.
  • changes in the concentration of the detergent in the detergent solution are also possible by changing the volume of solvent with which the at least one detergent tablet is flushed and / or changes in the pressure with which the solvent is applied to the detergent tablet.
  • the pressure in particular can have an influence on the rinsing rate and thus on the concentration of the cleaning solution.
  • a conductivity probe can optionally be arranged, for example, in the detergent solution collecting device, in particular in the detergent solution collecting container. Using this conductivity probe, the concentration of the detergent in the detergent solution can be determined and z. B. be compared by a control device with a predetermined target value. If necessary, for example, the concentration of the detergent in the detergent solution can be increased or decreased by z. B. the control device controls the corresponding components so that the detergent tablet is flushed with a larger or smaller volume of solvent and / or the pressure with which the solvent is released onto the cleaning tablet, is increased or reduced, and / or fresh water is additionally supplied to the cleaning solution collecting container.
  • the nozzle device has at least one nozzle on its “lance”, particularly preferably in an upper region near the lance tip, from which the solvent is sprayed onto the at least one cleaning tablet received in the receiving device during operation.
  • the nozzle (s) is / are preferably designed such that it emits the solvent obliquely to a longitudinal direction of the lance, particularly preferably in a plane lying essentially perpendicular to the longitudinal direction.
  • the nozzle device preferably comprises a plurality of nozzles in order to simultaneously dispense the solvent at different points onto the at least one cleaning tablet during operation.
  • the nozzles are further preferably arranged symmetrically on the nozzle device. It can thus be ensured that the solvent is dispensed essentially uniformly onto the at least one cleaning tablet in the receiving device of the dosing system.
  • the nozzles are distributed radially symmetrically (based on an axis of symmetry running in the longitudinal direction of the lance) on or in the lance.
  • the lance-like nozzle means can be arranged on several levels along its longitudinal direction with one or more, e.g. nozzles distributed evenly along the circumference.
  • the nozzle device can be equipped both with nozzles of the same type and with nozzles of varying sizes or configurations (provided the nozzle device has several nozzles).
  • At least one nozzle of the nozzle device can be automatically changed in its position relative to the receiving area during operation, so that the direction of jet of the solvent from the nozzle can vary during operation. This is possible both with a nozzle device with only one nozzle and with a nozzle device with several nozzles.
  • the nozzle device or lance, or at least a part of the lance, which has at least one nozzle rotates around its own (cylinder) axis during operation, whereby the at least one nozzle arranged on the nozzle device also rotates about said axis rotates.
  • the rotation can be achieved in that the lance-like nozzle device or lance is mounted freely rotatable about its longitudinal axis on a holder (with, for example, a solvent supply channel coupled to an interior of the nozzle device) and the nozzles in this way (e.g.
  • a part or section of the lance which has the nozzle (s), e.g. a lance head, can be mounted on another part of the lance in a similar manner so as to be freely rotatable about the longitudinal axis of the lance.
  • the lance-like nozzle device (or lance) of the solvent dispensing device preferably has an essentially round cross section. I.e. As mentioned, it is essentially cylindrical.
  • the lance-like nozzle device preferably has a length of at least 50 mm, preferably at least 100 mm, particularly preferably at least 150 mm.
  • the length of the lance-like nozzle device is preferably at most 500 mm, more preferably at most 400 mm and particularly preferably at most 300 mm.
  • the diameter of the lance-like nozzle device is preferably at least 5 mm, preferably at least 10 mm, particularly preferably at least 15 mm.
  • the diameter of the lance-like nozzle device is preferably at most 40 mm, more preferably at most 35 mm and particularly preferably at most 30 mm.
  • the nozzle device is designed in such a way that the solvent can be dispensed under pressure, the pressure used being variably adjustable, as already mentioned, by means of a control device.
  • the concentration of the cleaning agent in the cleaning solution can be controlled indirectly (as already described in a previous section).
  • the receiving device for receiving at least one cleaning tablet of the dosing system has, as mentioned, a liquid-permeable shelf or shelf.
  • the liquid-permeable tray is preferably designed in a sieve-like or grid-like manner at least in a partial area.
  • the cleaning solution can drain directly from the receiving device into the cleaning solution collecting device through such a sieve-like or grid-like tray, whereby, as explained above, according to the invention it is ensured that a cleaning tablet arranged in the receiving device has essentially no contact with a cleaning solution standing in the cleaning solution collecting device.
  • the openings in the sieve or grid preferably have a diameter of at least 1 mm, preferably of at least 1.5 mm, particularly preferably of at least 2 mm.
  • the diameter of the openings is preferably at most 15 mm, more preferably at most 10 mm and particularly preferably at most 5 mm.
  • the liquid-permeable tray e.g. the sieve
  • the lance can be from the downward facing side of the shelf, on which the lance z. B. as mentioned above can be mounted on a holder, through the insertion opening up into the receiving area and e.g. into the opening of at least one inserted cleaning tablet or even protrude through it.
  • the liquid-permeable tray preferably has an upwardly projecting collar at the edge of the insertion opening.
  • a cleaning tablet can be stably arranged on the liquid-permeable shelf thanks to the upward-standing collar.
  • solid particles are essentially prevented from being discharged from the receiving device into the cleaning solution collecting device.
  • the liquid-permeable shelf can also have an upwardly projecting collar protruding into the receiving area of the metering system on its outer boundary, that is to say in the area in which the shelf is located on the wall of the metering system form in order to stably arrange the at least one cleaning tablet on the liquid-permeable tray.
  • the height of the upstanding collar - regardless of whether it is a collar on the insertion opening or a collar on the outer boundary - is preferably at least 5 mm, more preferably at least 10 mm, particularly preferably at least 15 mm.
  • the height of the collar is preferably a maximum of 40 mm, more preferably a maximum of 35 mm and particularly preferably a maximum of 30 mm.
  • the detergent tablet arranged on the shelf during operation preferably has an essentially cylindrical shape, that is to say a round horizontal cross section, with two end faces. Furthermore, the detergent tablet preferably has at least one opening from a first end face to a second end face in order, as mentioned, to receive the nozzle device at least partially and preferably completely in the opening during operation.
  • the cleaning tablet particularly preferably has precisely one opening, the opening preferably running along a cylinder axis. The outer delimitation of the breakthrough is therefore preferably radially equal to the outside of the detergent tablet (that is to say the outer surface of the cylindrical detergent tablet).
  • the lance-like nozzle device is preferably designed and arranged relative to the receiving area in such a way that it engages in a lower side of the tray facing away from the receiving area from below through the insertion opening of the liquid-permeable tray into the opening of the at least one cleaning tablet arranged on the liquid-permeable tray.
  • the nozzle device preferably penetrates the opening of the cleaning tablet completely, i.e. from a first face to a second face of the detergent tablet.
  • the receiving area is preferably so large or high in relation to the desired detergent tablets that several detergent tablets can be arranged or stacked one above the other in the receiving device of the dosing system on the shelf.
  • a first, lowermost detergent tablet is with the downward-facing front side on the liquid-permeable storage surface (e.g. the Sieve) arranged.
  • a second cleaning tablet rests essentially with the downward-facing front side on the upward-pointing front side of the first cleaning tablet arranged below.
  • further detergent tablets can be arranged in the receiving device, with an upper detergent tablet each essentially resting with a downward-facing face on the upward-facing face of a cleaning tablet arranged below.
  • the lance-like nozzle device preferably penetrates all of the openings in the cleaning tablets arranged or stacked (one above the other) in the receiving device; H. the entire stack of detergent tablets.
  • the lance-like nozzle device is designed to be correspondingly long, so that the upper end of the nozzle device or lance is arranged above the upper end face of an uppermost cleaning tablet.
  • Introducing the nozzle device into the opening of at least one cleaning tablet has the advantage that the solvent can be dispensed into the opening as well as onto at least one face of the cleaning tablet, for example by means of the nozzle (s) attached to the nozzle device. This enables the cleaning tablet to be rinsed off particularly evenly with the solvent.
  • a further advantage results from the fact that the nozzle device penetrating the entire opening of the cleaning tablet gives the cleaning tablet mounted in the receiving device additional stability. In this way, at least one detergent tablet can advantageously be refilled quickly and efficiently into the receiving device of the dosing system.
  • the diameter of the cleaning tablet is at least 50 mm, preferably at least 60 mm, particularly preferably at least 80 mm and at most 250 mm, preferably at most 150 mm, and particularly preferably at most 120 mm.
  • the weight of the detergent tablet is at least 100 g, preferably at least 200 g, particularly preferably at least 300 g and at most 1500 g, preferably at most 1000 g, and particularly preferably at most 700 g.
  • the at least one opening in the detergent tablet preferably has a round cross section.
  • the diameter of the opening is preferably at least 15 mm, more preferably at least 20 mm, particularly preferably at least 25 mm.
  • the diameter of the opening is preferably at most 50 mm, more preferably at most 40 mm and particularly preferably at most 35 mm.
  • the detergent tablet preferably has at least one channel and preferably a plurality of channels on at least one of the two end faces.
  • the channels are preferably semicircular in cross section.
  • the channels preferably run radially from the outer boundary of the opening to the outside of the detergent tablet.
  • drainage channels through which the detergent solution can run off result between the respective end faces of two stacked detergent tablets lying on top of one another.
  • the detergent tablets are therefore preferably oriented in such a way that each end face with grooves lies on top of one without grooves or one without grooves on one with grooves.
  • the cleaning tablets can also be marked with an embossed note.
  • An arrangement is preferred in which the channels are each arranged on the upper side of the tablet lying below.
  • the drainage channels between the respective detergent tablets can also essentially prevent the metering system from clogging in the area of the opening during operation. Drainage channels can also indirectly prevent the nozzles of the nozzle device from being blocked, which is advantageous since such a blockage would negatively affect the spray pattern.
  • drainage channels are formed on both end faces of the detergent tablet, which means that the dosing system can be refilled in a particularly user-friendly manner, since both end faces of the detergent tablet can form both a lower and an upper face during operation as intended. Since the tablet pressing of detergent tablets with drainage channels on only one face is more cost-effective, such a variant of the detergent tablet is preferred. Depending on the application, the design of drainage channels on both sides can also be preferred.
  • the cleaning tablets have a coating on all outer surfaces and in the opening (for example, solid surfactants or fatty acid esters soluble in cold water).
  • the opening can be coated, for example, during the manufacturing process by means of a rotating nozzle which is carried up and down in the opening.
  • the coating essentially prevents the detergent tablet from crumbling, for example during transport or while the detergent tablet is being arranged in a metering system.
  • the handling of the cleaning tablet is also simplified, since direct contact with the potentially harmful chemicals in the cleaning tablet can be avoided by the coating.
  • a "crumbling" of the (cylindrical) cleaning tablet due to transport and storage can also be counteracted by providing, for example, the (otherwise “sharp") edges of the cylinder rim with a bevel during the manufacturing process.
  • the support surface or the end faces of the detergent tablet are round, as mentioned above, in their preferred embodiment, but could also be ellipsoidal, square or rectangular due to the spatial restrictions, especially when arranged in the installation spaces of the kitchen appliances, with at least one and preferably all corners or edges are rounded.
  • two or more openings are preferably also conceivable in order to detach or dissolve the respective detergent tablet as uniformly as possible with the solvent.
  • Figure 1 shows a commercial hood type dishwasher 2 with an embodiment of a dosing system 1 according to the invention, the essential components of the dosing system 1 being shown here in section.
  • the dosing system 1 shown here is arranged externally on the commercial hood-type dishwasher 2.
  • the dosing system on a commercial hood-type dishwasher 2 is only a preferred example and the dosing system 1 also on other, preferably commercial, dishwashers, washing machines and / or kitchen machines, in particular professional cooking devices such as ovens , Cooking appliances, deep fryers and steamers, can be used to clean the machine 2 itself and / or items to be cleaned or items to be washed therein.
  • the dosing system 1 shown here initially has a receiving device 3 for detergent tablets 4.
  • a receiving device 3 for detergent tablets 4 In this exemplary embodiment, three detergent tablets 4 are stacked in a receiving area 20 of receiving device 3 of dosing system 1.
  • the metering system 1 comprises a solvent dispensing device 6 with a water inlet 7 and a lance-like nozzle device 8 with a plurality of nozzles 9, the nozzles 9 being arranged distributed over the entire body of the lance 8.
  • a control unit 15 controls the supply of solvent (here water) into the solvent dispensing device 6 of the metering system 1 via a valve 18 of a water line 7a.
  • the valve 18 is in contact with the control device 15 via a control line 31a.
  • the detergent tablets 4 have a cylindrical body, each with an opening 21, which runs along the cylinder axis ZA of the respective detergent tablet 4 (see in this regard those explained below Figures 3 and 4 ).
  • the respective openings 21 of the detergent tablets 4 form an elongated cavity in which the lance 8 (that is to say the nozzle device 8) is arranged (see again in this regard Figure 1 ).
  • the detergent tablets 4 are arranged on a liquid-permeable shelf 5, here in the form of a sieve 5.
  • the sieve 5 has an insertion opening 23 for the lance 8. Around this insertion opening 23, the sieve 5 forms a collar 24 which projects into the receiving area 20.
  • the dosing system 1 has a cleaning solution collecting device 10, here consisting of a collecting funnel 19, a cleaning solution drain 12 and a cleaning solution collecting container 16 arranged separately from the receiving device 3.
  • a cleaning solution collecting device 10 here consisting of a collecting funnel 19, a cleaning solution drain 12 and a cleaning solution collecting container 16 arranged separately from the receiving device 3.
  • the detergent solution collecting container 16 has a conductivity probe 13 which is in contact with a control unit 15 via a line 14.
  • the concentration of the detergent in the detergent solution 11 can be increased or decreased.
  • the concentration of the detergent in the detergent solution 11 can be increased, for example, by the control unit 15 at least partially closing the valve 18, whereby a smaller volume of solvent (optionally under a higher pressure) is dispensed through the water line 7a into the solvent dispensing device 6.
  • the concentration of the detergent in the detergent solution 11 could also be reduced by the valve 18, for example, dispensing a larger volume of water to the solvent dispensing device 6.
  • the cleaning solution collecting container 16 has a liquid level meter 28 which is connected to the control unit 15 via a line 28a. Reached in that Detergent solution collecting tank 16, the detergent solution 11 has a defined maximum volume, so the water supply 7a to the solvent dispensing device 6 can be adjusted. Alternatively or additionally, the detergent solution 11 can be supplied to the commercial hood type dishwasher 2 via the detergent solution supply device 17, whereby the volume of the standing detergent solution 11 in the detergent solution collecting container 16 is reduced. This ensures that the volume of the detergent solution 11 standing in the detergent solution collecting container 16 does not exceed a defined maximum volume.
  • An overflow of the cleaning solution 11 in the cleaning solution collecting container 16 could, for example, also be prevented by an overflow (not shown).
  • the supply of the detergent solution 11 into the commercial hood type dishwasher 2 (or the removal of detergent solution 11 from the detergent solution collecting container 16) is also controlled by the control device 15.
  • a pump 33 controlled by the control line 31b of the control device 15 then pumps the detergent solution 11 from the detergent solution collecting container 16 into the interior of the commercial hood-type dishwasher 2 as required.
  • fresh water can also be pumped into the hood-type dishwasher 2 via a water line 7b (to reduce the detergent concentration in the detergent solution 11 if necessary).
  • the dosing system 1 shown provides a cleaning solution 11 in order to clean the interior (not shown) of the commercial hood type dishwasher 2 or the items to be cleaned, e.g. To clean glasses, dishes, cutlery, etc.
  • a solvent in this case tap water
  • the tap water connection 29 via the water line 7a into the nozzle device 8 of the solvent dispensing device 6 of the dosing system 1, which - as already mentioned - is controlled by the control unit 15.
  • the water is discharged from the nozzles 9 of the nozzle device 8 onto the upper end face 22a, the detergent tablet 4 arranged above, and onto the inner wall of the openings 21 of the detergent tablets 4.
  • the detergent solution 11 produced runs off through the sieve 5 into the collecting funnel 19 of the detergent solution collecting device 10 by gravitational force.
  • the upwardly projecting collar 24 of the sieve 5 can prevent coarse particles from being discharged into the cleaning solution collecting device 10 through the introduction opening 23 during operation.
  • the detergent solution collecting device 10 has a collecting funnel 19 and detergent solution drain 12, via which the detergent solution 11 finally drains into the detergent solution collecting container 16, in which a standing detergent solution 11 collects as a result.
  • the cleaning solution collecting container 16 is arranged externally and spatially separated from the receiving device 3 of the metering system 1.
  • a standing detergent solution 11 in an externally arranged detergent solution collecting container 16 cannot come into contact with the detergent tablets 4 arranged in the receiving device 3. This makes it possible to avoid silting up of the dosing system 1 from the cleaning tablets 4.
  • the standing detergent solution 11 is fed from the detergent solution collecting container 16 by means of a detergent solution supply device 17, again by control 31b of the control device 15 through the pump 33, to the interior of the hood type dishwasher 2.
  • waste water that accumulates during the washing process is then discharged from the hood-type dishwasher 2 through a drain (not shown) via a waste water line 30.
  • Figure 2 shows a further embodiment of a metering system 1.
  • control device 15 the commercial hood type dishwasher 2, as well as water lines 7a, 7b and all devices not explicitly mentioned below are analogous to FIG Figure 1 formed, but partly not shown.
  • Dosing system 1 off Figure 2 shows a further embodiment of a lance 8 or a nozzle device 8.
  • the nozzle device 8 has exactly one nozzle 9, the nozzle 9 in an upper area of the lance 8 protruding over the detergent tablets 4 (which can also be referred to as the lance head ) is appropriate.
  • the lance 8 rotates about its cylinder axis ZA ', the nozzle 9 rotating with it and in the process releases the solvent onto the upper end face 22a of the cleaning tablet 4 arranged above.
  • the rotation can be achieved by a recoil principle (as already explained above) by means of a suitable inclination of the nozzle 9.
  • the lance 8 is freely rotatably mounted on the lance-side end of the water line 7a (for example a stable pipe).
  • the lance head could be rotatably mounted on the lower cylinder-like tube section (lance body).
  • a nozzle device 8 with only one nozzle 9 in a metering system 1 according to the embodiment Figure 1 is arranged, or a nozzle device 8 with a plurality of nozzles 9, as in FIG Figure 1 shown on a metering system 1 according to Figure 2 is arranged rotatably.
  • the cleaning solution collecting container 16 is arranged directly below the receiving device 3.
  • the cleaning solution collecting device 10 here has an integrated cleaning solution collecting container 16, and is not as in FIG Figure 1 constructed from a separate collecting funnel 19, a cleaning solution drain 12 and a separate cleaning solution collecting container 16.
  • the detergent solution 11 thus produced is collected via the sieve 5 directly in the detergent solution collecting container 16 of the detergent solution collecting device 10.
  • the detergent solution collection container 16 also has a liquid level meter 27 in this exemplary embodiment. With the aid of this liquid level meter 27 and a suitable control or configuration of the control device 15 or control device 15, it is ensured during operation that the detergent solution 11 in the detergent solution collection container 16 has a defined maximum volume or does not exceed a maximum fluid level A, as explained in more detail below: During operation, the volume of the cleaning solution 11 in the cleaning solution collection container 16 increases as the solvent dispensing device 6 applies the solvent to the cleaning tablets 4 and the resulting cleaning solution 11 runs continuously through the sieve 5 into the cleaning solution collection container 16.
  • the control device 15 can for example actively reduce the solvent supply through the solvent dispensing device 6 into the receiving device 3 and / or supply the detergent solution 11 from the drain of the detergent solution collecting container 16 via a detergent solution supply line 17 to the hood type dishwasher 2. This prevents the cleaning solution 11 in the cleaning solution collecting container 16 from coming into contact with the cleaning tablets 4 arranged directly above the cleaning solution collecting container 16 on the sieve 5.
  • Figure 3 shows a perspective view of an embodiment of a preferred cleaning tablet 4.
  • Figure 4 shows a longitudinal section through this cleaning tablet 4.
  • the detergent tablet 4 has a cylindrical shape and has a first end face 22a, a second end face 22b and, on the outside, a circumferential cylindrical jacket surface 32.
  • a cylindrical opening 21 (which could also be referred to as a “bore”) extends from the first end face 22a to the second end face 22b along the cylinder axis ZA, which is particularly evident in the section in FIG Figure 4 you can see.
  • the lance-like nozzle device 8 or lance 8 can protrude through this opening 21.
  • a solvent is then preferably released onto the inner wall of the opening 21 and / or onto an end face (22a or 22b) pointing upwards during operation.
  • the detergent tablet 4 On the first end face 22a, the detergent tablet 4 has drainage channels 25 through which the drainage of a cleaning solution 11 that occurs during operation is facilitated.
  • the number of drainage channels 25 is variable, but the drainage channels 25 should preferably be designed symmetrically on an end face 22a of the detergent tablet 4.
  • the cleaning tablet 4 has drainage channels 25 on only one end face 22.
  • the cleaning tablet 4 has drainage channels 25 on both end faces 22 (not shown). In the case of detergent tablets 4 with drainage channels 25 formed only on one end face 22a, this side is arranged against a side without drainage channels 25.
  • the side with drainage channels 25 can optionally be oriented both upwards and downwards.
  • edges 26 of the outer boundary of the detergent tablet 4 are flattened as chamfers 26. As a result, “crumbling” of the edges 26 of the detergent tablet 4 as a result of transport and / or storage can essentially be avoided.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Detergent Compositions (AREA)
EP20163388.0A 2019-03-25 2020-03-16 Système de dosage Withdrawn EP3714757A1 (fr)

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DE102019107623.4A DE102019107623A1 (de) 2019-03-25 2019-03-25 Dosiersystem

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DE102021203799A1 (de) 2021-04-16 2022-10-20 Meiko Maschinenbau Gmbh & Co. Kg Geschirrspülmaschine und Verfahren zur Reinigung von Reinigungsgut

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326459A1 (de) * 1983-07-22 1985-01-31 Etol-Werk GmbH & Co KG Chemische Fabrik, 7603 Oppenau Verfahren zur herstellung eines geschirrspuelmittels und vorrichtung zur verarbeitung desselben
DE3510881A1 (de) * 1984-05-09 1985-11-14 Kombinat Veb Keramische Werke Hermsdorf, Ddr 6530 Hermsdorf Fliehkraftregler
WO1992004857A1 (fr) 1990-09-26 1992-04-02 Ecolab Inc. Distributeur pour detergents solides
US5505915A (en) * 1993-10-05 1996-04-09 Ecolab Inc. Solid chemical dispenser with movable nozzle
JP2971968B2 (ja) 1991-03-28 1999-11-08 旭電化工業株式会社 固形洗浄剤の供給装置
DE102007058589A1 (de) 2007-12-04 2009-06-18 Christine Schlund Dosiersystem
EP3275991A1 (fr) * 2013-01-10 2018-01-31 Budich International GmbH Tablette nettoyante avec pré-nettoyant intégré
EP3369476A1 (fr) * 2017-03-03 2018-09-05 Wiesheu GmbH Dispositif et procédé de fourniture d'un fluide de nettoyage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4860246B2 (ja) * 2004-11-22 2012-01-25 ディバーシー・アイピー・インターナショナル・ビー・ヴイ 洗浄剤供給装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326459A1 (de) * 1983-07-22 1985-01-31 Etol-Werk GmbH & Co KG Chemische Fabrik, 7603 Oppenau Verfahren zur herstellung eines geschirrspuelmittels und vorrichtung zur verarbeitung desselben
DE3510881A1 (de) * 1984-05-09 1985-11-14 Kombinat Veb Keramische Werke Hermsdorf, Ddr 6530 Hermsdorf Fliehkraftregler
WO1992004857A1 (fr) 1990-09-26 1992-04-02 Ecolab Inc. Distributeur pour detergents solides
JP2971968B2 (ja) 1991-03-28 1999-11-08 旭電化工業株式会社 固形洗浄剤の供給装置
US5505915A (en) * 1993-10-05 1996-04-09 Ecolab Inc. Solid chemical dispenser with movable nozzle
DE102007058589A1 (de) 2007-12-04 2009-06-18 Christine Schlund Dosiersystem
EP3275991A1 (fr) * 2013-01-10 2018-01-31 Budich International GmbH Tablette nettoyante avec pré-nettoyant intégré
EP3369476A1 (fr) * 2017-03-03 2018-09-05 Wiesheu GmbH Dispositif et procédé de fourniture d'un fluide de nettoyage

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