EP3434168A1 - Geschirrspüler, verfahren für den betrieb eines geschirrspülers und computerprogramm - Google Patents

Geschirrspüler, verfahren für den betrieb eines geschirrspülers und computerprogramm Download PDF

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Publication number
EP3434168A1
EP3434168A1 EP17183487.2A EP17183487A EP3434168A1 EP 3434168 A1 EP3434168 A1 EP 3434168A1 EP 17183487 A EP17183487 A EP 17183487A EP 3434168 A1 EP3434168 A1 EP 3434168A1
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EP
European Patent Office
Prior art keywords
dishwasher
controller
washing
washed
items
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.)
Granted
Application number
EP17183487.2A
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English (en)
French (fr)
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EP3434168B1 (de
Inventor
Ahmet ÖZEL
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret AS
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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Priority to EP17183487.2A priority Critical patent/EP3434168B1/de
Priority to TR2017/11144A priority patent/TR201711144A2/tr
Publication of EP3434168A1 publication Critical patent/EP3434168A1/de
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Publication of EP3434168B1 publication Critical patent/EP3434168B1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
    • 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
    • A47L15/4295—Arrangements for detecting or measuring the condition of the crockery or tableware, e.g. nature or quantity
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/04—Crockery or tableware details, e.g. material, quantity, condition
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/07—Consumable products, e.g. detergent, rinse aids or salt
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/30—Regulation of machine operational steps within the washing process, e.g. performing an additional rinsing phase, shortening or stopping of the drying phase, washing at decreased noise operation conditions

Definitions

  • the present disclosure relates to a dishwasher, and a method and computer program for operating a dishwasher.
  • Dishwashers are used for washing items such as crockery and cutlery.
  • a known dishwasher comprises a washing compartment for holding one or more items to be washed, and a washing mechanism for washing those items.
  • a user can select from a plurality of pre-defined washing cycles via a user interface on a front face of the dishwasher.
  • a dishwasher comprising: a washing compartment for holding one or more items to be washed; a door arranged to be movable between a closed position and an open position to enable access to the washing compartment; a washing mechanism for washing the one or more items to be washed; a controller for controlling the washing mechanism; and at least one sensor configured for communication with the controller; the controller configured to receive from the at least one sensor information associated with how dirty at least one of the one or more items to be washed is; and the controller configured to initiate a washing cycle according to one or more washing cycle parameters selected by the controller, in dependence on the information received from the at least one sensor.
  • the controller is configured to select the one or more washing cycle parameters based upon information obtained from a test washing cycle of the one or more items to be washed.
  • the controller is configured to determine, based on information pertaining to the test washing cycle received from the at least one sensor, of a type of dirt on the one or more items to be washed.
  • the type of dirt comprises one of: dirt that is easily removable; dirt that is not easily removable.
  • the at least one sensor comprises a first sensor arranged to sense at least one item in a lower portion of the dishwasher, and a second sensor arranged to sense at least one item in an upper portion of the dishwasher.
  • each portion comprises a washing mechanism capable of being controlled independently of the other by the controller.
  • the controller is configured to select a reference item from the one or more items to be washed, the reference item being an item determined to be most dirty amongst a plurality of items to be washed, the controller configured to select the one or more washing cycle parameters based upon the reference item.
  • the one or more washing cycle parameters comprising one or more of: duration; water temperature; quantity of water used; quantity of detergent used.
  • the dishwasher has an option which enables a user to disable the function in which the controller initiates a washing cycle according to one or more washing cycle parameters selected by the controller.
  • the dishwasher is configured to notify the user when the user selects a washing cycle which is determined by the controller to be inadequate to clean the at least one item to be washed.
  • the at least one sensor comprises at least one camera.
  • the controller is in communication with at least one memory storing a plurality of reference images of items to be washed, and the selected one or more washing cycle parameters being based upon a comparison of an image of at least one item to be washed taken by the at least one camera, and the plurality of reference images.
  • the one or more items to be washed comprises one or more of: at least one plate or bowl; one or more glasses; one or more cups or mugs; one or more knives; one or more spoons; one or more forks.
  • a method of operating a dishwasher comprising: receiving, at a controller from at least one sensor, information associated with how dirty at least one of one or more items to be washed in a washing compartment of the dishwasher is; and initiating, by the controller, a washing cycle according to one or more washing cycle parameters selected by the controller, in dependence on the information received from the at least one sensor.
  • the method comprises carrying out a test washing cycle prior to the washing cycle in order to determine a type of dirt on the one or more items to be washed.
  • a computer program stored in memory and executable by a processor to carry out the method of the second aspect.
  • Dishwashers are used to automate the washing of items associated with food preparation and/or cooking and/or eating.
  • items include crockery such as plates, bowls, cups, mugs etc.
  • Such items may also include cutlery such as knives, forks, spoons, or indeed any other cooking or eating utensil.
  • Other items that may be washed include glassware, food containers etc.
  • FIG. 1 schematically shows an example of a dishwasher 100.
  • the dishwasher 100 comprises a main body 102, within which there is a washing compartment 104.
  • the washing compartment 104 comprises a lower portion 106 and an upper portion 108.
  • the lower portion 106 comprises a tray or rack 110 for holding items to be washed
  • the upper portion 108 comprises a tray or rack 112 for holding items to be washed.
  • the racks 110 and 112 can be moved in and out of the washing compartment 104 on roller assemblies.
  • a washing mechanism 123 comprises spray arm 124 in lower portion 106, and spray arm 126 in upper portion 108.
  • spray arm 126 is omitted.
  • Each spray arm comprises a series of holes or nozzles which can spray water upwardly towards the items to be washed 114, while the spray arms 124 and 126 rotate.
  • the dishwasher 100 further comprises water inlet 128 and water outlet 130 for enabling water to be fed to and taken away from the dishwasher respectively.
  • a heater element (not shown) is provided for heating water as necessary.
  • hot and cold water is drawn from a building's supply as required.
  • a power connection is schematically shown at 132, which enables the dishwasher to be connected to mains electrical power for powering the dishwasher.
  • a controller is schematically shown at 134 for controlling operations of the dishwasher.
  • the controller 134 can, for example, cause the dishwasher to operate according to one or more pre-determined washing cycles selected via a user interface 136.
  • the available washing cycles may differ from each other by temperature and/or duration, for example.
  • Via the user interface 136 a user may also be able to select whether the washing cycle is for a full or half load.
  • a display 138 is also provided which can display information to the user. This may include information such as confirming a user's washing cycle selection, as well as information such as time remaining of a washing cycle that is in progress.
  • a door of the dishwasher is schematically shown at 140.
  • the door 140 is connected to main body 120 via hinges 142 and 144.
  • the door is in an open position enabling access to washing compartment 104.
  • the door 140 may be moved to a closed position so that the washing compartment 104 is then substantially enclosed.
  • the door 140 may also include a receptacle for holding dishwashing detergent (e.g. a dishwasher cube) which can be released in to the dishwasher during a wash.
  • the receptacle for holding washing detergent may of course also be positioned elsewhere within the dishwasher.
  • the dishwasher may also include one or more further receptacles for containing dishwasher salt and/or rinse aid, for example.
  • known dishwashing machines may inefficiently use resources such as electricity, water and detergent when performing a washing cycle. For example if a washing load is only slightly dirty or soiled, then it may be a waste of resources to perform a long washing cycle at a high temperature. Likewise if a washing load is very dirty, then a subsequent, second (or more) washing cycle(s) may be required to remove all dirt, again potentially wasting resources. A user cannot necessarily be relied upon to choose a correct or optimum washing cycle.
  • Document US2007/0181162A1 discloses a dishwashing machine which employs an image detection system to obtain a three-dimensional image of the washing chamber to evaluate a washing load. It does not evaluate how dirty or clean the washing load is.
  • Document KR2006/0100620A discloses a dishwasher with image pickup means. Using the image pickup means an image of the inside of the dishwasher can be displayed to a user on a display of the dishwasher. This enables the user to determine, at the end of a washing cycle, whether the load has been adequately washed without having to open the dishwasher.
  • a dishwasher can set a washing cycle based upon a determination of how dirty or soiled the washing load is.
  • the dishwasher can then initiate the washing cycle accordingly. It may be considered that the dishwasher automatically selects the optimum washing parameters taking in to account the dirtiness of the washing load. By tailoring the washing parameters to the actual dirtiness of the washing load then resources can be used accordingly, thus leading to efficient use of those resources.
  • FIG. 2 shows an example dishwasher 200 comprising a door 240.
  • the dishwasher 200 further comprises at least one sensor 250.
  • the at least one sensor 250 is located on an inside of the door 240.
  • the at least one sensor comprises a first sensor 252 and a second sensor 254.
  • the first sensor is arranged so as to be proximate or adjacent to a lower portion 206 of the dishwasher when the door 240 is closed
  • the second sensor 254 is arranged so as to be proximate to an upper portion 208 of the dishwasher when the door 240 is closed.
  • FIG. 3 This is shown in more detail in Figure 3 , in which the door is shown in a nearly closed position.
  • the sensor 252 is positioned proximate or adjacent to lower rack 210, and sensor 254 is positioned proximate to or adjacent upper rack 212.
  • the sensor 252 can then be used to determine how dirty item(s) 220 to be washed in the lower rack 210 are.
  • the sensor 254 can be used to determine how dirty item(s) 216 to be washed in the upper rack 212 are.
  • the sensor can for example be a camera that can take and store still images or motion picture images of the washing load in order to determine how dirty the washing load is.
  • the sensor may alternatively be an optical sensor which monitors output and reflected signals which may vary based upon how dirty the load is.
  • the dishwasher 200 comprises a controller shown schematically at 234.
  • the controller 234 comprises a memory 233 and a processor 235.
  • the controller is also communicatively connected to user interface shown schematically at 236, and a display shown schematically at 238.
  • the controller can control operations of the dishwasher, as described with respect to Figure 1 .
  • the controller may control the washing mechanism 223, which in this example comprises spray arms 224 and 226.
  • the spray arms 224 and 226 can be controlled independently, and thus the items in the upper and lower portions of the dishwasher can be subjected to different washing parameters, if deemed necessary.
  • the memory 233 stores a plurality of reference images of items of varying dirtiness/soiling.
  • the controller can then compare images of items to be washed inside the dishwasher 200 with the plurality of reference images to determine how dirty the load is.
  • Each reference image may also be associated in the memory 233 with corresponding one or more suitable washing parameters to wash an item of that dirtiness.
  • These associations may be stored, for example, in a look-up table.
  • the one or more washing cycle parameters may comprise one or more of: duration; water temperature; quantity of water used; quantity of detergent used etc.
  • the controller 234 is configured to determine a "reference" item to be washed within the washing load.
  • the reference item to be washed is the item that is determined to be most dirty in the load. That is the reference item may be a single item. If washing cycle parameters are chosen to ensure that the most dirty item is cleaned properly, then it is fair to assume that those parameters will also adequately wash less dirty items.
  • the controller 234 may be configured to wash items in the lower and upper racks 210 and 212 differently. For example, if the reference item in the lower rack 210 is more dirty than the reference item in the upper rack 212, then the lower rack may be subjected to different washing conditions (e.g. more water, and /or higher temperature, and/or longer duration etc.) than the lower rack.
  • the dishwasher 200 is configured to carry out a test washing cycle to determine how dirty the washing load is, and/or to determine a type of dirt adhered to one or more items in the washing load.
  • the "type" of dirt may be "fresh” dirt, or “aged” or “old” dirt. Fresh dirt is typically more easily removed than old dirt, which may be more strongly adhered to one or more of the items to be washed.
  • the test cycle may be relatively short compared to the main cycle. For example the test cycle may be less than 5 minutes.
  • the test cycle may comprise a rinse cycle in which the load is rinsed with water, but without any detergent being used.
  • the controller 234 can then compare information received from the at least one sensor 250 at the beginning and end of the test cycle to make a comparison between how dirty the load (or reference item) is at the beginning and end of the test cycle. If the load is determined to be cleaner at the end of the test cycle than at the beginning by more than a threshold amount, then it may be determined that the load comprises (or comprised) fresh dirt, which is relatively easy to clean. If the load is cleaner at the end of the test cycle than at the beginning by less than a threshold amount (or not at all cleaner), then it may be determined that the load comprises (or comprised) aged dirt, which is relatively difficult to clean. Thus when it is determined to be fresh dirt less intensive washing parameters may be selected compared to when it is determined to be aged dirt. The selected washing cycle which follows the test cycle may be referred to as the "main" or "full" washing cycle to differentiate from the test cycle.
  • the controller 234 is configured to automatically select the washing cycle parameters, in dependence on the information received from the at least one sensor. In some examples the controller selects from a plurality of pre-determined washing cycles. For example these may be the same washing cycles that are available to the user via the user interface 236 of the dishwasher. In some examples the controller 234 is not constrained by preset washing cycles which are available to the user, the controller being able to adjust any of the available parameters to suit the level of dirt of the load that has been sensed.
  • the controller 234 is arranged to start the test washing cycle and/or the main washing cycle automatically.
  • the dishwasher may automatically start the test cycle and/or main cycle upon determining that the dishwasher door has been closed, or upon determining that detergent has been inserted in the dishwasher and the door has been closed.
  • at least some user input is required to initiate the test cycle and/or the main cycle.
  • the controller may cause to be displayed on the display 238 a prompt requesting a user to confirm that the test cycle and/or main washing cycle may begin.
  • a user may be able to override, deactivate or disable the automatic program selection function (in which the controller is configured to initiate a washing cycle according to one or more washing cycle parameters selected by the controller, in dependence on the information received from the at least one sensor).
  • the above described operation of determining how dirty the load is i.e. by means of at least one sensor 250
  • a warning may be provided to the user.
  • the warning may be in the form of an audible alarm and/or a notification displayed on display 238, for example.
  • FIG. 4 An example method of operating a dishwasher is shown in Figure 4 .
  • a controller receives information from at least one sensor of how dirty at least one of one or more items to be washed in a washing compartment of the dishwasher is.
  • the controller initiates a washing cycle according to one or more washing cycle parameters selected by the controller, in dependence on the information received from the at least one sensor.
  • the test cycle is shown as optional at S0, which precedes S1.
  • S0 comprises carrying out a test washing cycle prior to S1 and S2, in order to determine a type of dirt on the one or more items to be washed.
  • the type of dirt may comprise dirt that is easily removable (e.g. fresh dirt), or dirt that is not easily removable (e.g. aged dirt).
  • the method may also comprise any of the other aspects described herein.
  • processor or processing system or circuitry referred to herein may in practice be provided by a single chip or integrated circuit or plural chips or integrated circuits, optionally provided as a chipset, an application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), digital signal processor (DSP), graphics processing units (GPUs), etc.
  • the chip or chips may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or processors and a digital signal processor or processors, which are configurable so as to operate in accordance with the exemplary embodiments.
  • the exemplary embodiments may be implemented at least in part by computer software stored in (non-transitory) memory and executable by the processor, or by hardware, or by a combination of tangibly stored software and hardware (and tangibly stored firmware).

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  • Washing And Drying Of Tableware (AREA)
EP17183487.2A 2017-07-27 2017-07-27 Geschirrspüler, verfahren für den betrieb eines geschirrspülers und computerprogramm Active EP3434168B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17183487.2A EP3434168B1 (de) 2017-07-27 2017-07-27 Geschirrspüler, verfahren für den betrieb eines geschirrspülers und computerprogramm
TR2017/11144A TR201711144A2 (tr) 2017-07-27 2017-07-28 Bulaşık Makinesi, Bulaşık Makinesinin Çalıştırılması İçin Bir Yöntem Ve Bilgisayar Programı

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EP17183487.2A EP3434168B1 (de) 2017-07-27 2017-07-27 Geschirrspüler, verfahren für den betrieb eines geschirrspülers und computerprogramm

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EP3434168A1 true EP3434168A1 (de) 2019-01-30
EP3434168B1 EP3434168B1 (de) 2022-12-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019109859B3 (de) * 2019-04-15 2020-04-16 Miele & Cie. Kg Vorrichtung für einen Korb für ein Reinigungsgerät, Korb und Reinigungsgerät
EP3973843A1 (de) * 2020-09-29 2022-03-30 LG Electronics Inc. Geschirrspüler und verfahren zur erkennung eines kamerafehlers durch einen geschirrspüler

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019109859B3 (de) * 2019-04-15 2020-04-16 Miele & Cie. Kg Vorrichtung für einen Korb für ein Reinigungsgerät, Korb und Reinigungsgerät
EP3973843A1 (de) * 2020-09-29 2022-03-30 LG Electronics Inc. Geschirrspüler und verfahren zur erkennung eines kamerafehlers durch einen geschirrspüler

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EP3434168B1 (de) 2022-12-28
TR201711144A2 (tr) 2019-02-21

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