EP4056098A1 - Geschirrspülmaschine und verfahren zum betrieb einer geschirrspülmaschine - Google Patents

Geschirrspülmaschine und verfahren zum betrieb einer geschirrspülmaschine Download PDF

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Publication number
EP4056098A1
EP4056098A1 EP21161839.2A EP21161839A EP4056098A1 EP 4056098 A1 EP4056098 A1 EP 4056098A1 EP 21161839 A EP21161839 A EP 21161839A EP 4056098 A1 EP4056098 A1 EP 4056098A1
Authority
EP
European Patent Office
Prior art keywords
dishwashing machine
occupancy
controller
examples
washing
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Withdrawn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
EP21161839.2A
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English (en)
French (fr)
Inventor
Mutlu USLU
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.)
Filing date
Publication date
Application filed by Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Priority to EP21161839.2A priority Critical patent/EP4056098A1/de
Publication of EP4056098A1 publication Critical patent/EP4056098A1/de
Withdrawn legal-status Critical Current

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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
    • A47L15/42—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
    • 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
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • 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
    • A47L2401/18—Air temperature
    • 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
    • A47L2401/19—Air humidity
    • 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
    • A47L2401/24—Spray arms status, e.g. detection of spray arm rotation
    • 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
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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 dishwashing machine and a method of operating a dishwashing machine.
  • Dishwashing machines are used for washing items such as crockery and cutlery.
  • a known dishwashing machine comprises a washing chamber 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 dishwashing machine.
  • a dishwashing machine comprising: a controller; a motor for driving a spray arm in a washing chamber of the dishwashing machine; and wherein the controller is arranged to determine an occupancy of the washing chamber based at least in part on electrical current information of the motor; and wherein the controller is arranged to select a washing program based at least in part on the determined occupancy.
  • the controller is arranged to use the electrical current information to monitor a current profile of the electric motor as the spray arm rotates.
  • the controller is arranged to determine the occupancy based at least in part on information of one or more portions of the profile that exceed a threshold current value.
  • the controller is arranged to determine the occupancy based at least in part on one or more of: a number of portions in the current profile that exceed the threshold current value, where the higher the number the higher the occupancy; an area under a curve of the profile that is above the threshold, the higher the area the higher the occupancy.
  • the controller is arranged to determine a distribution of the items to be washed within the washing chamber based at least in part on the current information.
  • the controller is arranged to determine the occupancy of the washing chamber based at least in part on information relating to a degree of moisture in the washing chamber.
  • the information relating to a degree of moisture is obtained from one or more of: a moisture sensor which is constructed and arranged to sense moisture in the washing chamber; a temperature sensor which is constructed and arranged to sense temperature in the washing chamber, and the controller is arranged to determine the degree of moisture based on the sensed temperature.
  • the controller is arranged to determine the occupancy during an occupancy determination phase.
  • the occupancy determination phase is configured to occur prior to a main washing cycle.
  • the spray arm is rotated at a constant speed.
  • a duration of the occupancy determination phase is fifteen minutes or less.
  • the controller is arranged to use a look-up table to select the washing program.
  • the motor comprises a brushless direct current motor.
  • a method of operating a dishwashing machine comprising: determining, by a controller of the dishwashing machine, an occupancy of a washing chamber of the dishwashing machine based at least in part on electrical current information of a motor of a spray arm of the dishwashing machine; and selecting, by the controller, a washing program based at least in part on the determined occupancy.
  • a computer program comprising computer program code arranged to cause a controller of a dishwashing machine to: determine an occupancy of a washing chamber of the dishwashing machine based at least in part on electrical current information of a motor of a spray arm of the dishwashing machine; and select a washing program based at least in part on the determined occupancy.
  • Dishwashing machines are used to automate the washing of items including crockery such as plates, bowls, cups, mugs etc. Items to be cleaned 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 dishwashing machine 100.
  • the dishwashing machine 100 comprises a main body 102, within which there is a washing chamber 104.
  • Washing chamber 104 may also be referred to as a washing cabinet or washing compartment.
  • the washing chamber 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 chamber 104 on roller assemblies.
  • Items to be washed are schematically shown at 114.
  • the items to be washed are schematically represented by plates 116 and 118 on rack 112, and plates 120 and 122 on rack 120.
  • plates 116 and 118 on rack 112 are schematically represented by plates 116 and 118 on rack 112
  • plates 120 and 122 on rack 120 are schematically represented by plates 116 and 118 on rack 112
  • a washing mechanism 123 comprises spray arm 124 in lower portion 106, and spray arm 126 in upper portion 108.
  • the upper spray arm 126 is omitted.
  • Each spray arm comprises a series of outlets (such as holes or nozzles) which can spray water upwardly and/or downwardly towards the items to be washed 114, while the spray arms 124 and 126 rotate.
  • the items to be washed 114 are thus cleaned by a combination of the impact of high temperature water sprayed from the spray arms, and high temperature water vapour which forms in the washing chamber 104.
  • the spray arm 124 is connected to shaft 125.
  • the shaft 125 enables rotation of spray arm 124 about a central axis of the shaft 125.
  • the shaft 125 and spray arm 124 may be considered to be comprised in a spray arm assembly 121.
  • the spray arm 126 is connected to shaft 127.
  • the shaft 127 enables rotation of spray arm 126 about a central axis of the shaft 127.
  • the shaft 127 and spray arm 126 may be considered to be comprised in a spray arm assembly 129.
  • the dishwashing machine 100 further comprises water inlet schematically shown at 128 and water outlet schematically shown at 130, for enabling water to be fed into and taken out of the dishwashing machine 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 dishwashing machine to be connected to mains electrical power for powering the dishwashing machine.
  • a water pump is schematically shown at 150.
  • the water pump 150 is constructed and arranged to distribute water around the dishwashing machine 100.
  • the water pump 150 can pump water to spray arms 124 and 126. Water that has been sprayed falls back down to a base or sump 152 of the dishwashing machine 100, from where that water can be recycled (after filtering, in some examples) by the pump 150.
  • a motor 160 is provided for causing rotation of spray arm 124.
  • motor 160 comprises a brushless direct current (BLDC) motor.
  • BLDC brushless direct current
  • a motor may also be provided for causing rotation of spray arm 126.
  • a moisture sensor 162 is provided.
  • the moisture sensor 162 is constructed and arranged to detect a level of moisture within the washing chamber 104.
  • a temperature sensor 164 is provided.
  • the temperature sensor 164 is constructed and arranged to detect a temperature within the washing chamber 104.
  • a controller is schematically shown at 134 for controlling operations of the dishwashing machine.
  • the controller 134 may comprise at least one memory and at least one processor.
  • the controller 134 can, for example, cause the dishwashing machine to operate according to one or more washing cycles.
  • the available washing cycles may differ from each other by temperature and/or duration, for example.
  • a display 138 is also provided which can display information to a user. This may include information such as displaying a washing cycle selection, as well as information such as time remaining of a washing cycle that is in progress.
  • a user interface is schematically shown 136.
  • a user may control certain operations of the dishwashing machine via user interface 136, such as initiating a washing cycle.
  • the controller 134 may also control other operations of the dishwashing machine 100.
  • the controller 134 may be configured to control operations of the motor 160.
  • the controller 134 may also receive information from one or more components within the dishwashing machine.
  • the controller 134 may receive information from one or more of: motor 160; moisture sensor 162; temperature sensor 164.
  • a door of the dishwashing machine 100 is schematically shown at 140.
  • the door 140 is shown in an open position enabling access to washing chamber 104.
  • a washing cycle generally comprises three main stages: (i) wetting; (ii) injection of detergent, (iii) rinsing. In some examples one or more of these steps may be omitted.
  • a rinse wash may include just a rinsing cycle. Whichever steps are included or not included, the washing of the washing load may be generally termed a washing cycle.
  • the rinsing stage is followed by a drying stage.
  • dishwashing machines In known dishwashing machines, one or more user-selectable programs are typically provided.
  • the dishwashing machine is therefore reliant upon a user making a correct judgement of a washing program to select. This may result in wastage of water and energy if a user selects a program whose intensity is higher than required. Alternatively, there may be improper cleaning if a user selects a program whose intensity is lower than required.
  • Some advanced models of dishwashing machine have attempted to provide automatic program selection based on a sensed occupancy and/or dirtiness of the load, but such advanced machines typically employ expensive and/or additional sensing equipment in order to do so.
  • the controller 134 is arranged to determine an occupancy of the washing chamber 104, and to select a suitable washing program based at least in part on the determined occupancy.
  • occupancy is meant how full the dishwashing machine 100 is. That is where there is a high occupancy there will be many items in the dishwashing machine to be washed, and where there is a low occupancy there will not be many items in the dishwashing machine to be washed.
  • a washing cycle that is automatically selected by the controller 134 will have an intensity (e.g. temperature and/or duration) based upon the determined occupancy. For example the higher the occupancy, the higher the intensity of the selected washing program. For example, the higher the occupancy, the higher the temperature and/or duration may be of the selected washing cycle. The lower the occupancy, the lower the temperature and/or duration may be of the selected washing cycle.
  • the controller 134 is arranged to determine an occupancy of the washing chamber 104 based at least in part on obtained electrical current information of the motor 160.
  • the motor 160 rotates, its electrical current will vary dependent upon whether water that is sprayed from spray arm 124 is striking an item to be washed, such as a dish. This is because of the additional reaction force that is created by the sprayed water striking an item to be washed, compared to being sprayed into an empty space.
  • the current may also vary due to water falling on to the spray arm 124 from one or more items to be washed, which may have an effect of a force acting on the spray arm.
  • the electrical current information that is obtained is phase current information.
  • the electrical current information is obtained from an inverter of the motor 160.
  • the electrical current information is representative of inertia of the spray arm 124. That is, in some examples it may be considered that the inertia of the spray arm increases when the sprayed water sprays on to an item to be washed, compared to when the sprayed water sprays in to an empty space.
  • the current may vary in dependence on distance between an item to be washed and the spray arm. In some examples, the closer an item to be washed is to the spray arm, the higher the current will be.
  • Figures 2A and 2B show example electrical current profiles of motor 160.
  • electrical current of motor 160 is represented on the Y-axis.
  • Position of the spray arm 124 is represented on the X-axis.
  • the X-axis may represent a rotational position of the spray arm 124 in degrees.
  • the spray-arm 124 rotates, it can be seen that the current varies, and that there are a number of peaks and troughs in the current profile. These peaks and troughs may also be referred to as "ripples".
  • a nominal current limit or threshold current value is set.
  • the peaks or ripples may be expressed as a percentage. For example, it may be determined for what percentage of the spray arm's rotation a current ripple is present. The higher the percentage, the higher the occupancy.
  • Figure 2A represents a washing chamber having a 75% occupancy. In some examples, it would take approximately 6 minutes for the washing chamber to reach a moisture level of 80 to 100% at a 75% occupancy level.
  • Figure 2B represents a washing chamber having a 99% occupancy. In some examples, it would take approximately 3 minutes for the washing chamber to reach a moisture level of 80 to 100% at a 99% occupancy level.
  • the controller 134 can determine not only an overall occupancy level in the dishwashing machine 100, but also where in the dishwashing machine the occupancy occurs. That is, according to some examples the controller 134 can determine a distribution of items to be washed within the washing chamber. For example, the controller 134 may be able to determine in which quadrant the items to be washed are loaded or most heavily loaded. According to some examples, the controller 134 achieves this by comparing the current peaks with position of the spray arm 124 (e.g. angular rotation). Where there are separate motors for upper and lower spray arms, the controller 134 can also determine distribution between upper and lower portions of the dishwashing machine. The controller 134 may then select a washing cycle program accordingly. For example, and dependent on distribution, the controller could cause the lower portion 106 of the washing chamber 104 to be washed at a different intensity to the upper portion 108.
  • the controller 134 checks whether the ripples occur in the same position for a certain number of spray arm rotations. Once the controller is satisfied that the ripples are occurring in the same place on each spray arm rotation, then it can be considered with a reasonably high degree of certainty that the determined occupancy and/or distribution is correct.
  • the controller 134 is arranged to determine the occupancy of the washing chamber 104 based at least in part on obtained information relating to a level or degree of moisture in the washing chamber.
  • the degree of moisture may be represented as a percentage.
  • the degree of moisture may be expressed as a relative humidity percentage.
  • information of the degree of moisture is obtained from moisture sensor 162.
  • temperature information is obtained from temperature sensor 164, and the degree of moisture may be extrapolated from the temperature.
  • a timer is used to determine how long it takes for the washing chamber 104 to reach a threshold moisture.
  • the threshold moisture may be a relative humidity percentage.
  • the threshold moisture lies in a range of 75% to 99% relative humidity.
  • the threshold moisture is 99% or about 99%. According to some examples, the higher the occupancy, the more quickly the threshold moisture will be reached.
  • the occupancy of the washing chamber 104 is determined based on at least two factors: electrical current information of the motor 160 and information of a degree of moisture. Using these two factors provides a high reliability that the determined occupancy is correct. According to some examples the electrical current information of the motor 160 and information of a degree of moisture in the washing chamber are determined in parallel. To this extent, it may be considered that the controller is arranged to carry out parallel data analysis.
  • the occupation determination phase may comprise either or both of the determining occupancy based on motor current information and determining occupancy based on moisture information.
  • the occupancy determination phase begins before the main washing cycle.
  • the occupancy determination stage may occur before the usual initial wetting stage, in some examples.
  • the wetting stage doubles as the occupancy determination phase.
  • the spray arm 124 is caused to rotate at a relatively low speed. According to some examples, during the occupancy determination phase the spray arm 124 is caused to rotate at a speed that is lower than the maximum speed of the spray arm 124. According to some examples, during the occupation determination phase the spray arm 124 is rotated at a constant speed. According to some examples, during the occupancy determination phase the spray arm 124 is caused to rotate at a speed in a range of 200 to 300 revolutions per minute.
  • a duration of the occupancy determination phase is in a range of ten to fifteen minutes. According to some examples, a duration of the occupancy determination phase is no more than fifteen minutes. According to some examples, a duration of the occupancy determination phase is fifteen minutes or about fifteen minutes. According to some examples, it takes the washing chamber 104 about ten to fifteen minutes to reach a moisture level of 99% (e.g. relative humidity of 99%).
  • the controller uses the obtained information of current information of the motor 160 (e.g. information of ripples or spikes) and information relating to a degree of moisture in the washing chamber, and compares that information with a look-up-table (LUT), in order to select a suitable washing cycle.
  • LUT 300 is shown in Figure 3 .
  • the LUT 300 comprises: a first column 302 representing time taken to meet moisture threshold (in minutes); a second column 304 which represents a percentage of current ripples; a third column 306 that represents percentage occupancy level; and a fourth column 308 that represents a washing program that is to be selected based upon the parameters of the first three columns.
  • the dishwashing machine 100 is loaded with information of the LUT at the time of manufacture or assembly of the dishwashing machine 100.
  • the moisture threshold (column 302) comprises a moisture of 99%.
  • a user deciding that they want to wash the load that is present in the dishwashing machine 100, initiates a washing cycle in the dishwashing machine 100. In some examples this is done by pressing a button or the like on the user interface 136. According to some examples the user simply needs to initiate the washing cycle - the user does not need to select a suitable washing cycle.
  • step S2 begins an occupancy determination phase, to determine how full the dishwashing machine is.
  • step S2 may comprise a sub-step S3 of determining occupancy based at least in part on electrical current information of the motor 160, and S4 of determining occupancy based at least in part on information relating to a degree of moisture in the washing chamber.
  • step S2 may comprise only step S3.
  • step S2 may comprise only step S4.
  • step S2 may comprise both steps S3 and S4. Where S2 comprises both S3 and S4, in some examples S3 and S4 occur in parallel.
  • the durations of S3 and S4 are the same. In some examples, the durations of S3 and S4 are different.
  • S3 and S4 may occur partially in parallel, where one of S3 and S4 starts and/or finishes before the other. In some examples, S3 and S4 occur in series. Where S3 and S4 occur in series, S3 may occur before S4, or S4 may occur before S3. In some examples, S2 takes no longer than 15 minutes.
  • the controller selects a washing program based at least in part on the determined occupancy.
  • the controller 134 causes the selected washing cycle to be initiated.
  • the described dishwashing machine and method enable determination of occupancy of the washing chamber, and therefore selection of an appropriate washing cycle, in a manner that does not require complicated and expensive equipment over a standard dishwashing machine.
  • no additional hardware is required above what is provided in a standard BLDC drive dishwasher. Where moisture and/or temperature sensors are required, these can be installed in a relatively cheap and simple to install manner.
  • the determination of occupancy can be carried out by a standard controller of a dishwashing machine, once programmed accordingly.
  • a start button or the like
  • the controller 134 is arranged to utilise a self-learning mechanism. For example, the controller 134 can learn overt time whether it has correctly determined occupancy and/or selected the most appropriate washing cycle for the determined occupancy, and adapt the algorithm or algorithms it employs over time. Therefore, in some examples the controller 134 and dishwasher 100 may be considered adaptive.
  • the invention also extends to computer programs, particularly computer programs on or in a carrier, adapted for putting the invention into practice.
  • the program may be in the form of non-transitory source code, object code, a code intermediate source and object code such as in partially compiled form, or in any other non-transitory form suitable for use in the implementation of processes according to the invention.
  • the carrier may be any entity or device capable of carrying the program.
  • the carrier may comprise a storage medium, such as a solid-state drive (SSD) or other semiconductor-based RAM; a ROM, for example a CD ROM or a semiconductor ROM; a magnetic recording medium, for example a floppy disk or hard disk; optical memory devices in general; etc.
  • SSD solid-state drive
  • ROM read-only memory
  • magnetic recording medium for example a floppy disk or hard disk
  • optical memory devices in general etc.

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  • Washing And Drying Of Tableware (AREA)
EP21161839.2A 2021-03-10 2021-03-10 Geschirrspülmaschine und verfahren zum betrieb einer geschirrspülmaschine Withdrawn EP4056098A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21161839.2A EP4056098A1 (de) 2021-03-10 2021-03-10 Geschirrspülmaschine und verfahren zum betrieb einer geschirrspülmaschine

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Application Number Priority Date Filing Date Title
EP21161839.2A EP4056098A1 (de) 2021-03-10 2021-03-10 Geschirrspülmaschine und verfahren zum betrieb einer geschirrspülmaschine

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EP4056098A1 true EP4056098A1 (de) 2022-09-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330580A (en) * 1992-05-01 1994-07-19 General Electric Company Dishwasher incorporating a closed loop system for controlling machine load
US20120060875A1 (en) * 2009-05-29 2012-03-15 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwasher
EP3150100A1 (de) * 2015-10-01 2017-04-05 Whirlpool EMEA S.p.A Geschirrspüler mit beladungsschätzer
WO2017108096A1 (en) * 2015-12-22 2017-06-29 Arcelik Anonim Sirketi A dishwasher and a method for the detection of the load in a rack of such dishwasher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5330580A (en) * 1992-05-01 1994-07-19 General Electric Company Dishwasher incorporating a closed loop system for controlling machine load
US20120060875A1 (en) * 2009-05-29 2012-03-15 Bsh Bosch Und Siemens Hausgerate Gmbh Dishwasher
EP3150100A1 (de) * 2015-10-01 2017-04-05 Whirlpool EMEA S.p.A Geschirrspüler mit beladungsschätzer
WO2017108096A1 (en) * 2015-12-22 2017-06-29 Arcelik Anonim Sirketi A dishwasher and a method for the detection of the load in a rack of such dishwasher

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