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EP3859071B1 - Procédé de fonctionnement d'un appareil électroménager à circulation d'eau et appareil électroménager à circulation d'eau - Google Patents

Procédé de fonctionnement d'un appareil électroménager à circulation d'eau et appareil électroménager à circulation d'eau Download PDF

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Publication number
EP3859071B1
EP3859071B1 EP21151988.9A EP21151988A EP3859071B1 EP 3859071 B1 EP3859071 B1 EP 3859071B1 EP 21151988 A EP21151988 A EP 21151988A EP 3859071 B1 EP3859071 B1 EP 3859071B1
Authority
EP
European Patent Office
Prior art keywords
water
dirt
enzymes
treatment chamber
objects
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
EP21151988.9A
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German (de)
English (en)
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EP3859071A1 (fr
Inventor
Wolfgang Thimm
Uwe Schaumann
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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.)
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Publication date
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Publication of EP3859071A1 publication Critical patent/EP3859071A1/fr
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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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/10—Temperature of washing liquids; Heating means therefor
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F39/022—Devices for adding soap or other washing agents in a liquid state

Definitions

  • the invention relates to a method for operating a water-conducting household appliance and to a water-conducting household appliance which is designed to carry out this method.
  • a water-based household appliance such as a washing machine can be used to specifically combat specific types of dirt on laundry.
  • a specific type of dirt can be entered by an operator via a control panel.
  • types of dirt on the laundry can be identified in advance, for example, by measuring the reflectivity or emissivity of the laundry to be washed.
  • specific types of dirt on the laundry can be detected during a wash cycle, for example, by detecting specific proteins in the wash water.
  • the invention is based on the object of creating a method as mentioned above and a water-conducting household appliance suitable for carrying out this method, with which problems of the prior art can be solved and in particular it is possible to detect and remove dirt on objects as effectively as possible by means of marker substances and enzymes.
  • the household appliance is provided with a treatment chamber and a storage system containing marker substances, preferably several different marker substances. Enzymes are also contained therein, advantageously several different enzymes. Furthermore, the household appliance has a nozzle device for spraying the marker substances onto objects in the To introduce or spray the dirt into the treatment chamber. For this purpose, this nozzle device is connected to the aforementioned storage system. Furthermore, the household appliance comprises means for introducing water into the treatment chamber and a water supply therefor, as well as heating means for the water and a pump in the water supply. These latter functional units in connection with water correspond to conventional water-using household appliances such as washing machines, washer-dryers, or dishwashers. Finally, the household appliance comprises detection means designed for an optical detection method to recognize or detect dirt marked or detectable with marker substances.
  • step a marker substances are applied to objects to be cleaned in the treatment chamber.
  • this can only be done on some of the objects in the treatment chamber and/or only in a specific area of the treatment chamber, regardless of whether objects are specifically intended or known to be there.
  • step b an optical detection method is used to detect whether the marker substances have marked dirt on the objects to be cleaned. For this purpose, the aforementioned detection means are used as intended.
  • step c) if dirt has been detected, the two following steps E) and S) are carried out in a variable order, possibly multiple times.
  • step E) enzymes are applied to objects or areas on or in which dirt has been detected by means of the marker substances, using the means for introducing water into the treatment chamber.
  • the enzymes are designed to remove the detected dirt. Different, specially adapted or coordinated enzymes can possibly be used for different types of detected dirt, possibly even together.
  • step S the aim is to create suitable local conditions for the enzymes to be effective on the dirt. These local conditions apply with regard to the temperature and/or humidity of the objects, especially if these are items of laundry in a washing machine or washer-dryer.
  • the invention can, on the one hand, provide for dirt to be detected via marker substances in the treatment chamber itself, and thus not only generally determine whether dirt has been detected anywhere in the treatment chamber, but also where. Targeted cleaning or targeted removal of this dirt, which is then achieved with the enzymes, is then more easily possible. Furthermore, the best possible local conditions for the effectiveness of these enzymes can be created, in particular by influencing the temperature. This allows the enzymes to work as effectively as possible in the treatment chamber. On the other hand, a further development of the invention can achieve optimal storage of the enzymes in a storage room for this purpose, possibly also in the aforementioned storage system, generally at room temperature, i.e., a lower temperature than for their optimal operating conditions during the cleaning process. Furthermore, by selecting a temperature, possibly also by adding water, it is possible to adjust a transition from solid to liquid or vice versa, in order to better store the marker substances and/or the enzymes.
  • an analysis of wastewater from the treatment chamber can be carried out to determine whether a certain minimum amount of dirt or any dirt or contaminants at all are still present anywhere in the treatment chamber in order to carry out step a) of applying the marker substances or so that this appears to be sensible.
  • this step a) with the application of the marker substances is only carried out if a minimum amount of dirt has been detected in the treatment chamber or in the wastewater. This minimum amount can possibly also vary depending on the respective type of dirt.
  • the marker substances are only applied to certain restricted areas within the treatment chamber. This allows them to be applied in a targeted manner, making it possible to specifically check for dirt or contamination. Then, using the aforementioned detection means, it is only possible to detect or check whether dirt is present on or in the objects in these specific areas or in a specific area. This makes it possible for the detection means, possibly also a nozzle device for the marker substances, to be designed in a simpler manner. Furthermore, Above all, the consumption of marker substances can be significantly reduced. Furthermore, the consumption of marker substances can be reduced to a necessary level.
  • UV light can be used in the aforementioned step S) to activate enzymes. This is generally known, which makes it possible for the enzymes to be more stable or easier to store in the non-activated state.
  • An optical detection method using UV light is known from the aforementioned DE 10 2016 202 267 A1 known.
  • the enzymes can be applied in liquid solution to the objects to be cleaned, or to the contaminants or dirt.
  • a nozzle device is advantageously used, in particular an adjustable nozzle device.
  • it can be freely adjustable in space or along a line.
  • its discharge direction can be freely adjusted.
  • the aforementioned line can possibly run parallel to a rotational axis of a drum in a washing machine as a water-conducting household appliance.
  • the enzymes can be applied to the objects, dirt, or contaminants together with other detergent substances. These should be applied together in a liquid form, possibly by storing them dry, for example, in powder form, and then dissolving them in a suitable liquid for easier transport and application.
  • a type of dirt it is possible for a type of dirt to be identified when dirt is detected.
  • an enzyme suitable for removing this detected type of dirt, and optionally also another detergent or cleaning agent can be selected from a set of several different enzymes or detergents and used for step E). This allows for the most precise cleaning possible, removing dirt or contaminants as effectively as possible while simultaneously requiring as little detergent as possible.
  • the invention provides that by introducing tempered or heated air and/or heated water into the treatment chamber, local conditions are created therein that are suitable for the effectiveness of the enzymes to remove the dirt or contaminants.
  • air and/or water can be either They can be applied generally or over a large area, or specifically to areas or objects in or on which dirt has been detected and/or in or on which enzymes have been applied. Heating and/or moistening can ensure that the enzymes are as effective as possible in removing the contaminants. This is easily possible with appropriate nozzle devices for air and/or water. These can be the same as for the marker substances and/or enzymes.
  • a pump mentioned above in the household appliance can have an integrated heater.
  • this heater is integrated on or in the pump chamber, advantageously on an outer side of the pump chamber around an impeller.
  • Such a pump can preferably be designed to convey air and/or water, wherein this air and/or water is heated simultaneously with the conveyance. This enables particularly efficient heating during flow.
  • Such a pump is known, for example, from EP 2348944 B1 .
  • the objects are agitated in the treatment chamber.
  • a washing machine or washer-dryer in particular by rotating a drum as the treatment chamber, with the objects being laundry items in the drum.
  • the enzymes and any additional substances applied can, on the one hand, be better distributed over the surface of the objects near their application site. On the other hand, they can also penetrate a fabric or textile better to remove dirt or contaminants there.
  • Such agitation of the objects should only take place for a limited time, advantageously for a maximum of five minutes or even just a maximum of one minute. Furthermore, such agitation can be relatively slight, for example by slowly rotating at a low speed of a maximum of 120 revolutions per minute, particularly advantageously a maximum of 5 to 10 revolutions per minute. This ensures that the enzymes and substances are not spread too widely, which could cause them to be moved too far from the location to which they were applied. After all, this location has been previously determined in the manner described above, so that the application has already been carried out in a relatively targeted manner. In a further development of the invention, it is even possible, when moving the treatment chamber with the objects therein, to not rotate the drum completely, but, for example, to only partially rotate it. rotate. This can advantageously be done in the form of a back-and-forth rocking motion, as an oscillating rocking motion.
  • the cleaning process is carried out until no more dirt or contaminants are detected after at least one, preferably at least two or three, executions of the detection process involving the application of marker substances and detection by means of the optical detection means. Five to ten executions are considered to be the upper limit.
  • the detection process can particularly preferably be carried out at least three times, with the objects being remixed in the treatment chamber each time after each detection process has been carried out.
  • the marker substances and detection agents in the treatment chamber identify where dirt or contaminants are located on the objects. Enzymes and, if necessary, other detergent substances are then applied to the respective spots or areas. These can then take effect, possibly supported by setting a certain temperature and humidity. During this process, the objects can be advantageously moved within the treatment chamber. Finally, a rinsing step with water can be carried out, and then the process is repeated in order to see if there is still dirt or contamination on these areas or objects.
  • step S) an active condition from the following group is influenced: temperature, humidity, pH value of water or other liquids in the treatment chamber.
  • the parameters at which enzymes work optimally for certain types of soiling are known to the expert from publicly available literature (e.g., ACS Catal. 2018, 8, 11, 10876-10887).
  • the process is advantageously applied in a washing machine or washer-dryer, a water-based household appliance.
  • the laundry or items of laundry are treated as objects to be cleaned.
  • a rotating drum of the washing machine which serves as a treatment chamber, the laundry can also be agitated to allow the enzymes and any substances to work more effectively and to expose all areas, so to speak, to examine whether they have already been sufficiently cleaned or whether they still require further cleaning.
  • An alternative water-based household appliance is a dishwasher. Moving items may be somewhat more difficult here, but this can be achieved with partially movable dish baskets.
  • the advantage of applying this method in a dishwasher is that the items, namely the dishes, are usually rigid and can therefore be moved more easily and predictably.
  • the nozzle device it is possible for the nozzle device to be adjustable with respect to its nozzle direction. Such adjustability can be arbitrary, in particular in space, or alternatively along a line. Such a line should run parallel to a rotational axis of an aforementioned drum in order to be able to reach all points in at least a lower, middle, or upper region of the drum.
  • the nozzle device can have a movable or adjustable nozzle on a rigid arm or the like. Alternatively, a nozzle can be arranged on an adjustable and articulated nozzle arm.
  • the aforementioned enzymes or other detergent substances are applied by means of a nozzle device.
  • This may then be a different nozzle device than the one for the enzymes in order to achieve their optimal effectiveness by separating them.
  • the two nozzle devices may optionally be The same nozzle arm can be designed, particularly advantageously, as a structural unit. This simplifies assembly and operation and generally requires less space.
  • the nozzle device for the marker substances can also form a structural unit with the aforementioned detection means. This makes it very advantageous to align them in the same direction. This allows the enzymes and/or marker substances and/or detergent substances to be applied directly in the direction or to the area in which the detection means, e.g., a camera, are directed and where they have detected dirt or contamination.
  • the aforementioned pump preferably has an integrated heater. It can be designed to pump air and/or water, advantageously sequentially, but without exchanging components. Such a pump is known, for example, from the aforementioned EP 2348944 B1 .
  • a washing machine 11 is shown with a housing 12.
  • the washing machine 11 has a drum 15 with laundry items W therein.
  • carriers 20 are arranged in a known manner. They serve to mix the laundry items W as the drum 15 rotates.
  • a sump 22 which leads into a drain 23.
  • the drain 23 is connected to a valve V1 with three positions. In the closed position, no water can drain from the sump 22. In an open position to the right, water can be pumped into the wastewater 33 by a pump P1 and thus out of the washing machine 11.
  • a supply line Z connects to the valve V1, which leads to a pump P2.
  • This pump P2 is advantageously designed as before with an integrated heating device.
  • the pumped water can be heated simultaneously.
  • it can be particularly advantageously designed as shown in the above-mentioned EP 2348944 B1 known, so that it can pump both water from the supply line Z and air drawn in from other sources. Both pumped water and pumped or conveyed air can be heated, which can advantageously be adjusted by a control 35 connected to the pump P2.
  • the pump P2 is connected to a valve V2, which is designed as a three-way valve.
  • a supply line Z A leads to an analysis unit A.
  • This analysis unit is advantageously designed as shown, for example, in the EP 3 553 220 A1 known.
  • the analysis unit can additionally or alternatively record the pH value of the water and, if necessary, subsequently change it using measures to be described. Salts, for example, can be used to change the pH value.
  • Other analyses are certainly possible, but not all of them need to be described here.
  • Water analyzed in the analysis unit A can be pumped out into the wastewater 33 via an outlet AA and the pump P1. Alternatively, the outlet AA could also lead back into the drum 15.
  • valve V2 leads via a supply line Z B1 to a container B1.
  • This container B1 can contain the marker substances M mentioned above, so that container B1 forms the storage system mentioned above.
  • a drain A B1 leads downwards from container B1 and to the right toward drum 15. This will be explained in more detail below.
  • valve V2 leads to a container B2 via a supply line Z B2 .
  • Container B2 can contain, for example, the aforementioned enzymes E, or alternatively, the aforementioned detergents.
  • a drain AB2 also leads downwards and to the right to drum 15.
  • the outlets AB1 and AB2 are combined and lead to the right to a nozzle D1, which leads into the drum 15 slightly more than halfway up, or at least points into it, even if it does not necessarily protrude into the drum 15.
  • the nozzle D1 is designed to use water pressure due to the pumping power of the pump P2 to introduce water mixed with marker substances or enzymes, i.e. liquid, into the drum 15 in a targeted manner onto specific areas of laundry items W or individual laundry items W.
  • the nozzle D1 can be designed such that its direction is adjustable. This is known from the prior art and can easily be achieved using appropriate mechanics.
  • a further nozzle D2 can be provided, which leads from above to the drum 15 or extends into the drum 15. This location has the advantage that the nozzle D2 can easily reach any point on the surface formed by the laundry items W with a jet.
  • a camera K is also arranged on top of the drum 15, for example as the optical detection means mentioned above.
  • the camera K is designed, for example when using UV light, to radiate this light either over a large area or widely fanned out into the drum 15 onto the laundry items W in order to make it visible whether dirt has been
  • the object has been marked with marker substances to detect it.
  • the UV light can be directed at a relatively narrow angle with a cone angle of 110°. Camera K itself is also aligned in exactly this direction, so that it can capture what is visible in the area irradiated with UV light.
  • Camera K is connected to controller 35, as is the aforementioned UV light source. Furthermore, controller 35 is also connected to nozzle D2. Not shown, but of course present, are connections from controller 35 to valves V1 to V3, the two pumps P1 and P2, as well as to analysis unit A and the two containers B1 and B2. A drive for drum 15 is also connected to this.
  • Top left shows how an inlet 25 branches off downwards from the fresh water inlet 24 and leads via a third valve V3 to tank B2.
  • the purpose of this is to allow cold fresh water to be introduced into tank B2 containing the enzymes.
  • warm or even hot water can be supplied via pump P2 and valve V2 using the supply line Z B2 .
  • a precise temperature setting for the water and thus also for the mixed-in enzymes is possible.
  • optimal operating conditions for their effectiveness on the dirt can be created according to the invention in terms of temperature. The same temperature can and should then prevail in the drum 15 containing the laundry items W, which is easily possible if the water, which has been heated to the appropriate temperature by mixing, is introduced into the drum 15.
  • the laundry items W are placed in the drum 15 and can advantageously be moistened first. This can help detect dirt, in particular to improve the effectiveness of the marker substances.
  • the marker substances M are then metered from the container B1 into the supplied water by means of the pump P2 and the valve V2 and applied specifically to a portion of the laundry items W by means of the nozzle D1 and optionally D2.
  • These laundry items W are advantageously stationary, as is the drum 15.
  • the camera K is aimed precisely at the area to which the nozzles D1 and optionally D2 were aimed and where they applied the marker substances M. Possibly with the aid of the aforementioned UV light, the camera K then detects whether the marker substances have marked dirt or other contaminants. The exact procedure for this process can also be found in DE 10 2016 202 267 A1.
  • the controller 35 causes the drum 15 to rotate slightly in order to distribute the laundry items W and thus bring new laundry items W that have not yet been searched to a location that can be examined by the camera K using the marker substances M.
  • the nozzles D1 and/or D2 as well as the camera H can be moved if designed accordingly, advantageously moved synchronously with alignment to the same new area, so that a new area or new laundry items W can then be examined without any movement of the laundry items W in the drum 15.
  • the examination begins again by first applying marker substances and then detecting by means of the camera K whether dirt has been marked and thus detected.
  • enzymes E are first applied from container B2 via nozzles D1 and optionally D2, again using pump P2 and valve V2, by pumping water from container B2 to the exact area where the dirt was detected.
  • the enzymes are optionally applied using water at an appropriate temperature to ensure the greatest possible effectiveness against the dirt.
  • warm water can be applied again for better soaking and better action. Alternatively, this can also be used to introduce higher humidity for greater effectiveness of the enzymes against the dirt.
  • warm air can be introduced or blown onto these areas in the manner described above using pump P2 and nozzles D1 and/or D2. This way, the enzymes are not diluted too much or washed away by the dirt.
  • water for rinsing can then be applied to the treated areas or laundry items W by means of the pump P2, the valve V2 and the nozzles D1 and/or D2 again without moving the laundry items W in the drum 15, whereby the dirt and also the enzymes are to be rinsed away in order to pass through the sump 22 and the Outlet 23 to be pumped into the wastewater 33.
  • it can be examined again according to the aforementioned examination step to determine whether any further dirt can be detected. If no dirt can be detected, the laundry items W are either moved again by rotating the drum 15 in order to detect new, possibly soiled areas.
  • another area of the stationary laundry items W can be examined in the aforementioned manner by moving the nozzles D1 and/or D2 as well as the camera K.
  • detergent can be introduced from the drawer 26 into the washing operation or process at a selected time. This can be done, for example, in a pre-wash cycle to first attempt to remove easily removable dirt from the laundry items W.
  • Detergent can also possibly be used in addition to the enzymes for local cleaning of the laundry items W.
  • the detergent can be introduced into the drum 15 over a large area using water from the fresh water inlet 24 and the water inlet 30. It is also easy to imagine that it is fed to the pump P2, for example, via another valve in the supply line Z, in order to then be applied to the laundry items W under pressure through the nozzles D1 and/or D2.
  • FIG. 2 A simplified enlargement is shown, showing how three containers B1, B2, and B3 are arranged on the supply line ZB .
  • the aforementioned marker substances M are contained in container B1 on the far left. Via an outlet (not explained in detail here), which can be controlled by the controller 35, the marker substances M enter the water in the supply line Z B , are mixed with it and can then be introduced into the drum 15.
  • enzymes E can be dosed into the supply line Z B in container B2 to the right by the controller 35.
  • the inlet 25 with fresh water is provided. It can either lead directly into container B2, as shown, or advantageously into the supply line Z B directly in front of container B2.
  • the valve V3 in the inlet 25 using the controller 35, together with the water heated by the pump P2, a precise desired temperature can be set for optimal effectiveness of the enzymes E on the dirt.
  • the enzymes E are stored in container B2 in such a way that they can be kept for as long as possible or have maximum effectiveness for as long as possible.
  • Another container B3 is arranged with substances S in it, arranged in the same way as the other containers.
  • substances S can, for example, change the pH value as described above, and can be salts, for example.
  • FIG. 3 A further embodiment of the invention is shown, in which two compartments 127a and 127b are provided in a drawer 126 with a fresh water inlet 124 on the left.
  • different detergents can be provided in compartment 127a, and fabric softener in compartment 127b.
  • the water inlet 130 functions with a known overflow from the compartments 127a and 127b and, like the water inlet 30 of the Fig. 1 to the washing machine drum.
  • drawer 126 On the right side of drawer 126 there are three containers B1, B2 and B3 according to the Fig. 2 They can have the same function or the same content.
  • the supply line Z B is connected to the drawer 126 or to its containers B1, B2 and B3. Water can then be pumped along the outlet line AB by pump P2, with the contents of one of these containers mixed in.
  • a drum 215 is shown, viewed from the side, arranged in a drum receptacle 214. It is rotatably mounted on the right-hand side on a pivot bearing 217; a connection to a drive motor is not shown here, but is easily conceivable. Access to the drum 215 is possible via the door 216. A circumferential seal 218 is shown in simplified form between the drum 215 and the door 216. Drivers 220 are arranged on the inside of the drum 215. Items of laundry W to be cleaned lie at the bottom of the drum 215.
  • a structural unit 237 is passed through the seal 218 from above, on which a camera K, UV illuminants (not shown), and a nozzle D are arranged.
  • the structural unit 237 is movable, advantageously freely movable in all directions, at least in one area, in order to be aligned with the laundry items W in the drum 215.
  • a very highly focused liquid jet (shown in dashed lines) is indicated for the nozzle D and is directed onto a portion of the laundry items W. This allows marker substances M to be applied locally, very precisely, or specifically, to an area of the laundry items W.
  • a very narrow cone of the camera K is aligned with the same area, as can be clearly seen.
  • the UV illumination (not shown) can have the same very narrow cone, or possibly a somewhat wider one. In any case, it is important that the camera K and the UV illuminants do not both have a much larger detection area than the area in which the nozzle D applies liquid. Thus, the camera K or a UV illumination is advantageously bundled in a similarly narrow beam.
  • Fig. 5 is another washing machine 311 similar to the one from Fig. 4 shown with a drum holder 314, a drum 315, a door 316, a circumferential seal 318 and drivers 320 in the drum 315.
  • a passage 319 Through the pivot bearing 317 runs here a passage 319.
  • a support tube 338 runs sealed, which has at its end a structural unit 337 similar to that of Fig. 4 Also in the Fig. 4
  • Such a support tube 238 is provided, through which fluid lines, such as the outlet A B to the nozzle D, run, as well as electrical lines for the camera K and the UV lamps. Also not shown are corresponding actuators for moving the assembly 337.
  • the assembly 337 has a camera K and a nozzle D as well as UV lamps (not shown).
  • Fig. 5 When moved to the far right, the assembly 337 barely protrudes into the drum 315 and thus only minimally disrupts the washing process. At the same time, even in this position, an area of the laundry items W located to the left of it can be reached or grasped for inspection and cleaning.
  • the dashed line shows a position for the assembly 337 on the support tube 338, in which it has been moved far or even as far as it will go to the left. This allows it to reach any area on the top of the laundry items W even better, allowing it to optically detect dirt and then remove it using the enzymes or clean the laundry items W.
  • a head 339 is movably arranged on the support tube 338.
  • the mobility can be implemented with a cardan suspension or in a similar manner so that the head 339 can be rotated as desired, at least in areas below its horizontal plane.
  • Two nozzles D1 and D2 as well as an aforementioned camera K are arranged on the head 339.
  • the respective directions or directions are shown; run almost parallel and meet at a distance of 10 cm to 50 cm in a small area or even at a point. This ensures that, for example, marker substances M are applied to the same spot through the nozzle D1, and enzymes through the nozzle D2. This spot can be monitored or recorded using the camera K.
  • a UV light source U is arranged directly next to camera K. Similar to camera K itself, this source can be aligned to the same location and have a strong focus. Thus, an area illuminated with UV light by UV light source U can be approximately as large as the detection range of camera K. This enables precise UV illumination of areas marked with marker substances M on laundry items W in exactly the area to which camera K is aligned.
  • a semiconductor chip for example as a CCD or as a lab-on-chip, is arranged directly in the head 339, i.e. very close to a camera lens.
  • a light guide can be provided from the head 339 out of the drum 315, which leads to an aforementioned semiconductor chip arranged outside and thus protected.
  • the semiconductor chip can also be arranged very close to the controller 35, possibly even in a structural unit or in a housing with it.
  • the same can also apply to the UV light source U. It can be arranged, for example, with a UV LED, either directly in the head 339 or alternatively be led out of the drum 315 by means of a light guide. Thus, it can also be arranged outside of it and protected.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (15)

  1. Procédé pour faire fonctionner un appareil électroménager à circulation d'eau (11, 211, 311), l'appareil électroménager (11, 211, 311) comprenant :
    - une chambre de traitement (15, 215, 315),
    - un système de stockage (B) contenant des substances marqueurs (M) et des enzymes (E),
    - un dispositif à buses (D) pour appliquer les substances marqueurs (M) sur des objets (W) dans la chambre de traitement (15, 215, 315), le dispositif à buses (D) étant relié au système de stockage (B),
    - des moyens (D1) pour introduire de l'eau dans la chambre de traitement (15, 215, 315) et une conduite d'eau (Z) à cet effet,
    - des moyens de chauffage pour l'eau,
    - une pompe (P2) dans la conduite d'eau (Z),
    - des moyens de détection (K) conçus pour un procédé de détection optique afin de reconnaître les salissures marquées avec les substances marqueurs (M),
    avec les étapes suivantes :
    a) des substances marqueurs (M) sont appliquées au moyen des moyens (D1) destinés à introduire de l'eau dans la chambre de traitement (15, 215, 315) sur des objets (W) à nettoyer dans la chambre de traitement (15, 215, 315), de préférence uniquement sur une partie des objets (W) dans la chambre de traitement (15, 215, 315) ou uniquement dans une zone déterminée de la chambre de traitement (15, 215, 315),
    b) un procédé de détection optique détecte si les substances marqueurs (M) ont marqué la saleté sur les objets (W) à nettoyer, la saleté étant détectée de telle sorte que caractérisé par l'étape :
    c) dans le cas où de la saleté a été détectée, les deux étapes E) et S) suivantes sont effectuées dans un ordre quelconque :
    E) application d'enzymes (E) au moyen des moyens (D1) destinés à introduire de l'eau dans la chambre de traitement (15, 215, 315) sur les objets (W) ou les zones sur lesquels des salissures ont été détectées,
    S) création de conditions locales appropriées pour l'efficacité des enzymes (E) sur la saleté en termes de température et/ou d'humidité des objets (W),
    les enzymes (E) étant conçues pour éliminer la saleté détectée,
    les conditions locales appropriées pour l'efficacité des enzymes (E) étant créées par l'introduction d'air tempéré ou chauffé et/ou d'eau dans la chambre de traitement (15, 215, 315), l'air et/ou l'eau étant appliqués soit de manière générale ou sur une grande surface, soit de manière ciblée sur des zones ou objets (W) dans lesquels des salissures ont été détectées et/ou dans lesquels les enzymes (E) ont été appliquées.
  2. Procédé selon la revendication 1, caractérisé par une analyse (A) des eaux usées provenant de la chambre de traitement (15, 215, 315) afin de déterminer s'il reste encore une quantité minimale déterminée de salissures dans les eaux usées ou dans la chambre de traitement (15, 215, 315) afin de réaliser l'étape a) consistant à appliquer les substances marqueurs (M).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les substances marqueurs (M) ne sont appliquées que sur certaines zones limitées à l'intérieur de la chambre de traitement (15, 215, 315), la détection de la présence de salissures sur les objets (W) n'étant effectuée que dans ces zones déterminées à l'aide de moyens de détection (K) dans le procédé de détection optique, une direction des buses du dispositif à buses (D) étant de préférence modifiée, en particulier de manière aléatoire dans l'espace ou le long d'une ligne parallèle à un axe de rotation du tambour (15, 215, 315).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé de détection optique est réalisé au moyen d'une lumière UV et/ou en ce que, à l'étape S), une lumière UV est utilisée pour activer les enzymes (E).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les enzymes (E) sont appliquées sous forme de solution liquide, de préférence au moyen d'un dispositif à buses (D), et/ou en ce que les enzymes (E) sont appliquées conjointement avec d'autres substances détergentes, de préférence sous forme liquide commune.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que, lors de la détection de salissures, un type de salissure est également identifié et, en fonction de cela, une enzyme (E) appropriée pour éliminer ce type de salissure identifié est sélectionnée parmi une quantité de plusieurs enzymes différentes (E) et utilisée pour l'étape E).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que, pour l'introduction d'air chauffé et/ou d'eau chauffée, la pompe (P2) est équipée d'un chauffage intégré, la pompe (P2) étant de préférence conçue pour refouler l'air et/ou l'eau et les chauffer simultanément.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'après l'application des enzymes (E), le cas échéant conjointement avec d'autres substances détergentes, et la création de conditions locales appropriées pour l'efficacité des enzymes (E), les objets (W) sont déplacés dans la chambre de traitement (15, 215, 315), de préférence par rotation d'un tambour rotatif (15, 215, 315) servant de chambre de traitement avec les objets (W) à l'intérieur, en particulier pendant une durée maximale de 5 minutes, de préférence à une vitesse de rotation faible, inférieure à 120 tours par minute.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'après l'application unique d'enzymes (E) sur des zones ou des objets (W) dans lesquels des salissures ont été détectées, d'autres zones à l'intérieur de la chambre de traitement (15, 215, 315) ou d'autres objets (W) sont pourvus des substances marqueurs (M) et il est détecté présence de salissures à cet endroit, de préférence dans une machine à laver (11, 211, 311) en faisant tourner le tambour (15, 215, 315) dans au moins une direction et en mélangeant les objets (W) qui s'y trouvent afin d'échanger les objets (W) accessibles aux substances marqueurs (M), le tambour (15, 215, 315) étant notamment tourné lentement à une vitesse comprise entre 1 et 10 tours par minute.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé de nettoyage est effectué jusqu'à ce qu'après au moins une fois, de préférence au moins trois fois, après au moins une, de préférence au moins trois, exécutions du procédé de détection avec application de substances marqueurs (M) et détection au moyen des moyens de détection optiques (K), aucune saleté n'est détectée, le procédé de détection étant de préférence exécuté au moins trois fois et les objets (W) étant à chaque fois mélangés à nouveau dans la chambre de traitement (15, 215, 315) après un procédé de détection exécuté.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'étape S) vise en outre une condition d'action parmi le groupe suivant : introduction d'ozone ou valeur du pH de l'eau dans la chambre de traitement (15, 215, 315).
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce que lorsque le procédé est utilisé dans une machine à laver (11, 211, 311) en tant qu'appareil électroménager à circulation d'eau pour laver du linge (W), la vitesse de rotation du tambour (15, 215, 315) en tant que chambre de traitement pour préparer les pièces de linge (W) ou pour mélanger les pièces de linge (W) est comprise entre 5 0 et 400 tours par minute, en particulier entre 60 et 100 tours par minute.
  13. Appareil électroménager à circulation d'eau (11, 211, 311) conçu pour mettre en œuvre le procédé selon l'une des revendications précédentes, l'appareil électroménager à circulation d'eau (11, 211, 311) comprenant :
    - une chambre de traitement (15, 215, 315),
    - des moyens (D1) pour introduire de l'eau, des enzymes (E) et des substances marqueurs (M) dans la chambre de traitement (15, 215, 315) et une conduite d'eau (Z) à cet effet,
    - des moyens de chauffage pour l'eau,
    - une pompe (P2) dans la conduite d'eau (Z),
    - des moyens de détection (K) pour le procédé de détection optique,
    caractérisé par un dispositif à buses (D) comprenant un système de stockage (B) pour introduire des substances marqueurs (M) sur des objets dans la chambre de traitement (15, 215, 315).
  14. Appareil électroménager à circulation d'eau selon la revendication 13, caractérisé en ce que les moyens de détection (K) pour le procédé de détection optique comportent des sources de lumière UV (U), les moyens de détection étant notamment réalisés dans une unité de construction avec une caméra (K) comme moyens de détection optique.
  15. Appareil électroménager contenant de l'eau selon la revendication 13 ou 14, caractérisé par un dispositif à buses (D) pour appliquer les enzymes (E) en solution liquide et/ou par un dispositif à buses (D) pour appliquer les substances marqueurs (M), le dispositif à buses (D) pour les substances marqueurs (M) étant réalisé sous forme d'unité structurelle avec les moyens de détection (K) selon la revendication 14 et/ou avec le dispositif à buses (D) pour les enzymes (E), en particulier encore avec une source de lumière UV (U) et une caméra (K) selon la revendication 14.
EP21151988.9A 2020-01-31 2021-01-18 Procédé de fonctionnement d'un appareil électroménager à circulation d'eau et appareil électroménager à circulation d'eau Active EP3859071B1 (fr)

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US5272893A (en) * 1992-09-11 1993-12-28 White Consolidated Industries, Inc. Enzyme bath maintenance system
US8047024B2 (en) * 2007-05-07 2011-11-01 Whirlpool Corporation Control and wash cycle for activation and deactivation of chemistry in the wash bath of an automatic washer
DE102008050895A1 (de) 2008-09-25 2010-04-01 E.G.O. Elektro-Gerätebau GmbH Pumpe für Fluide
DE102016202267A1 (de) 2016-02-15 2017-08-17 E.G.O. Elektro-Gerätebau GmbH Reinigungsverfahren und Reinigungsvorrichtung
DE102016204531A1 (de) * 2016-03-18 2017-09-21 BSH Hausgeräte GmbH Dosiervorrichtung, Haushaltsgerät, Verfahren zum Dosieren, Substanz, Verfahren zum Herstellen einer Substanz sowie Kartusche
DE102016212978A1 (de) * 2016-07-15 2018-01-18 Henkel Ag & Co. Kgaa Verfahren und Vorrichtung zur Ermittlung von Verunreinigungen
DE102016217031A1 (de) 2016-09-07 2018-03-08 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine oder eines Waschtrockners mit verbesserter Steuerung sowie hierzu geeignete Waschmaschine oder geeigneter Waschtrockner
CN108930138B (zh) * 2017-05-27 2022-03-15 青岛海尔洗衣机有限公司 用于洗衣机的污染物监测模块、洗衣机及其控制方法
DE102018205502A1 (de) 2018-04-11 2019-10-17 E.G.O. Elektro-Gerätebau GmbH Sensorvorrichtung und Verfahren zur Untersuchung einer Flüssigkeit und Waschmaschine
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