EP3257995B1 - Verfahren zum betreiben einer wäschebehandlungsvorrichtung und wäschebehandlungsvorrichtung - Google Patents

Verfahren zum betreiben einer wäschebehandlungsvorrichtung und wäschebehandlungsvorrichtung Download PDF

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Publication number
EP3257995B1
EP3257995B1 EP16174132.7A EP16174132A EP3257995B1 EP 3257995 B1 EP3257995 B1 EP 3257995B1 EP 16174132 A EP16174132 A EP 16174132A EP 3257995 B1 EP3257995 B1 EP 3257995B1
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EP
European Patent Office
Prior art keywords
laundry
treatment process
laundry treatment
amount
appliance
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.)
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Application number
EP16174132.7A
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English (en)
French (fr)
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EP3257995A1 (de
Inventor
Andrea De Bernardo
Fabio Altinier
Lorenzo Corso
Terenzio Girotto
Piero Stocco
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Electrolux Appliances AB
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Electrolux Appliances AB
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Priority to EP16174132.7A priority Critical patent/EP3257995B1/de
Publication of EP3257995A1 publication Critical patent/EP3257995A1/de
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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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/32—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by graphical features, e.g. touchscreens
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/20—Operation modes, e.g. delicate laundry washing programs, service modes or refreshment cycles
    • 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
    • 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
    • D06F2103/04—Quantity, e.g. weight or variation of 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the present invention concerns the field of laundry treating techniques.
  • the present invention refers to a method for operating a laundry treatment appliance and to a laundry treating appliance operating according to such method.
  • laundry treatment machines like “simple” laundry washing machines (i.e. laundry washing machines which can only wash and rinse laundry), laundry washing-drying machines (i.e. laundry washing machines which can also dry laundry) and laundry dryers (i.e. laundry machines which can only dry laundry without washing it), is widespread.
  • Laundry treatment appliance will refer to simple laundry washing machines, laundry washing-drying machines and laundry dryers.
  • Laundry treatment appliances generally comprise an external casing provided with a rotatable drum where the laundry to be treated is placed.
  • Laundry washing machines and laundry washing-drying machines comprise a washing tub wherein a perforated drum is rotatable contained.
  • a loading/unloading door ensures access to the drum.
  • Laundry treatment appliances able to perform a washing process typically comprise a water supply unit and a products supply unit, preferably a drawer, for the introduction of water and washing/rinsing products (i.e. detergent, softener, rinse conditioner, etc.) into the tub.
  • Known laundry treatment appliances are also provided with water draining devices that may operate during different phases of the washing program to drain the dirty water.
  • a complete laundry treating program or progress typically includes different phases during which the laundry to be washed is subjected to adequate treatments.
  • a treating cycle usually comprises a main washing phase during which the laundry is treated by means of water and a detergent.
  • the water is typically heated to a predetermined temperature based on the washing program selected by the user. It is also possible that hot water is introduced into the tub from the hot water mains.
  • the drum is rotated, so as to apply also a mechanical cleaning action on the laundry.
  • the drum is typically rotated at high rotational speed, so in such a way that dirty washing liquid (i.e. water mixed with detergent) is extracted from the laundry, and this dirty washing liquid is drained to the outside by the water draining devices.
  • a successive step of the cycle typically comprises a rinsing phase which usually comprises one or more rinsing cycles/steps.
  • clean rinse water may be first added to the laundry.
  • the rinse water is absorbed by the laundry and the rinse water removes from the laundry detergent and/or dirty water not previously removed by washing liquid in the main washing cycle.
  • the drum is then rotated to extract water and dirty water/detergent from the laundry.
  • the dirty water extracted is drained from the tub to the outside by the water draining devices.
  • one or more final spinning phases may be provided for the extraction of the residual water contained in the wet laundry.
  • the water extracted during the spinning phase is drained towards the outside by means of the water draining devices (during or after the spinning phase).
  • Laundry dryers are household appliances built for drying clothes and comprise a drying chamber or drum into which the clothes to be dried are introduced.
  • the drying chamber is rotatable supported within a cabinet and made to rotate by means of a driving motor, typically consisting of an electric motor connected to the drying chamber via a belt.
  • the drying chamber is the drum and tub assembly, and one or more drying phases are added which typically commence after the rinsing phases.
  • the drying phase may involve spinning the drum and applying hot air to the laundry.
  • the quality of the washing and/or drying process depends on several factors.
  • One important factor is the amount of laundry actually loaded into the drum compared to the maximum amount of laundry for which each of the selectable treatment processes available in the laundry treatment appliance is designed to operate with proven quality and/or efficiency. If the drum is overloaded with an excessive amount of laundry, the various laundry pieces can not perform an appropriate tumbling motion and their mutual contact can prevent detergent and/or drying air to homogeneously reach all surfaces.
  • the user who may not be aware of such causal relationship, will note that the treating process performed on an actually excessive amount of laundry has not been properly effective on the laundry, with the consequence that the appliance is considered as being working improperly of even damaged.
  • the document WO 01/71085 A1 describes performing a wash cycle in a laundry treatment appliance. At the end of the wash cycle the machine notifies the user that she or he has overloaded the machine.
  • the document EP 2458058 A1 discloses a washing machine comprising: a washing tub comprising a rotatable drum adapted for receiving the laundry to be washed; a logic unit adapted to control the electric and/or electronic components of the washing machine so as to make the latter to perform a washing cycle comprising one or more phases; a user interface adapted for setting a washing program to which corresponds a washing cycle to be performed, and for presenting user information; a weighing device adapted to detect the weight of the laundry loaded into the rotatable drum.
  • EP 2843125 A1 describes a laundry treatment apparatus comprising a cabinet, a control unit controlling the operation of the laundry treatment apparatus, a laundry treatment chamber for treating laundry using process air, and a process air channel for guiding the process air from and to the laundry treatment chamber.
  • the process air is filtered by a removable filter device which is removable from an operational position within the cabinet.
  • a filter compartment is arranged within the cabinet (3) for receiving the filter device. When the filter device is properly inserted in the filter compartment, the filter device is in its operational position.
  • the laundry treatment apparatus comprises a detector unit for detecting the filter device being in the operational position or in a non-operational position.
  • the method comprises starting a laundry treatment program, and in case of detecting the non-operational posi tion of the filter device during execution of the program a suspension of the program or of the presently executed subroutine is delayed by a predetermined time period.
  • the document DE 19705878 A1 discloses a program selection and display system for a program-controlled washing machine, a switch panel with selectors for washing programs and additional functions and a display unit.
  • the panel features an additional display for displaying the loading degree of the washing machine drum. This degree is determined from data that depends on the washing program or relates to the washing.
  • the aim of the invention is to provide a method for operating a laundry treatment appliance which optimizes the quality of the laundry treatment process.
  • the invention relates to method for operating a laundry treatment appliance, comprising a rotatable drum into which laundry can be loaded and which is rotated by a motor, whereby a closable door is provided which gives access to the drum; with the steps of
  • the invention is based on the consideration that the performance of a laundry treatment appliance can be improved if the amount of laundry to be treated is adequately chosen.
  • the effectiveness of a laundry treatment cycle depends on the ratios of water, detergent and laundry in the tub, the freedom of laundry to move in the drum and other factors. These factors can depend on the specific laundry treatment cycle chosen.
  • An overload of the laundry can prevent the laundry from getting in contact with water and detergent in a homogenous way. In the case of a drying operation, an overload can prevent hot air to reach all surfaces of the laundry in a homogeneous way.
  • the user usually typically does not precisely know the optimal amount of laundry that should be loaded and tends to wash as many items as possible at once, which will overload the machine. If the message is not visible to the user at the end of the laundry treatment cycle, she or he may have forgotten the initial overload condition and my wonder about the reduced quality.
  • Applicant has found that an overloading of laundry into the drum and performing the treatment cycle with this overload condition can be prevented by communicating to the user an overload condition and to allow the user to change the amount of laundry essentially before the laundry treatment phases in which the laundry is treated by water and/or air is being started.
  • the overload indication is maintained during the laundry treatment process or displayed again at the end of the process, it can be assured that the user gets notified. The user then can understand that the washing and/or drying effects are probably less than optimal due to the overload.
  • the steps a) and b) can be performed in the order a), b), so that first the laundry treatment process is selected and then laundry is loaded into the drum. These two steps can also be performed in the reverse order, where first laundry is loaded into the drum and then the process is selected. It is also possible that, in both orders, these two steps overlap at least partially in time.
  • steps is used in a general manner and can comprise steps as such as well as decisions. Moreover, a decision can contain at least one step, and a step can contain comprise substeps.
  • the laundry treatment process is started when a specific user interaction with the appliance takes place. Preferably, it is started when the user presses a start button.
  • the method comprises the steps of:
  • the set of operational parameters for performing the treatment process on laundry is chosen dependent on one or more of:
  • the interaction comprises opening and subsequent closing of the door of the appliance, whereby the set of operational parameters is depending on the time interval between the opening and losing of the door.
  • the operational parameters are preferably set to the one set of operational parameters if the time interval is smaller than a threshold time interval or the estimations of the amount of laundry performed in two subsequent iterations of step d) result in substantially the same laundry amount. In these cases, it is highly probable that no or no considerable change of the laundry amount has happened. The user may, for instance, only have checked if the door is really closed.
  • the notification is advantageously maintained until the laundry treatment process has finished and/or the door is opened and/or a user interaction with the appliance has occurred.
  • the last alternative assures that the user can see the indication since this interaction means that the user is interacting with the machine and therefore can sense indications given by the appliance.
  • the indication is preferably made on a display of the appliance. In this way, a visual indication is made which can conveniently recognized by the user.
  • an indication related to the amount of laundry load is made on the display.
  • the amount of laundry is indicated.
  • a load range of the laundry is visually indicated.
  • the load range can be indicated by using the terms “small load”, “medium load”, and “large load”, whereby each term refers to weight range of the laundry.
  • the laundry load threshold value preferably corresponds to the maximum amount of laundry expected to be treated for the selected laundry treatment process. In this way, an overload condition means that the laundry can not be treated in an optimal way and reductions of quality and/or efficiency of the laundry treatment process are to be expected.
  • a display of the appliance it is signaled that the amount of laundry can be changed.
  • a message is displayed indicating that a change of laundry is possible and/or advantageous.
  • the message can, for instance, be "Drum overload, please remove laundry”.
  • the current laundry load is below the laundry load threshold value, and whereby this indication is preferably maintained. It is preferably maintained until the laundry treatment process has finished and/or until a user interaction occurs after the laundry treatment process has finished.
  • the waiting amount of time is preferably between 10 and 60 seconds. Preferably, the waiting amount of time is 30 seconds.
  • step d) is performed without and/or before supplying water in a tub of the appliance in which said drum is rotatable arranged. In this way, uncertainties which can result from an unknown amount of water in the tub are avoided during the determination of the amount of laundry.
  • the laundry load amount is determined by rotating said drum and measuring electrical and/or mechanical parameters related to said motor.
  • These parameters are preferably electrical parameters, preferably from the group current, power, power voltage, and/or mechanical parameters, preferably from the group rotation speed or rotor position.
  • the laundry load threshold value advantageously depends on the selected laundry treatment process and/or the kind or type of laundry communicated to the appliance by the user or estimated by the appliance.
  • the appliance can, for instance, be configured such that the kind or type of laundry can be inputted as additional and separate information.
  • the appliance can also be configured to recognize or assess the kind of laundry.
  • the laundry treatment appliance is a washing machine, a dryer or a combined washer/dryer.
  • the laundry treatment appliance is a combined washer/dryer, whereby the laundry treatment process is a combined washing and drying cycle, and whereby the laundry load threshold value of step e) is a threshold value based on the maximum laundry load that can be dried in the combined washing and drying cycle.
  • the amount of laundry that can be dried in a combined washing-drying process is usually lower compared to the amount of laundry that can be washed with a desired quality.
  • the drying operations are preferably performed after a rinsing step of a washing treatment.
  • the drying operations are performed after the last or final rinsing step of the washing operations.
  • the drying process starts during the last spinning phase of the washing phases.
  • the invention is related to a laundry treatment appliance, comprising a rotatable drum into which laundry is loaded and which is rotated by a motor, with a control unit configured and/or programmed to perform a method described above.
  • the laundry treatment appliance comprises a tub in which the drum is arranged in a rotatable manner.
  • the laundry treatment appliance is built as a front-loading washing machine or combined washer/dryer.
  • the display is arranged on a user interface.
  • a user interface is a dedicated area on the appliance for interaction of the user with the appliance. The user will expect to control the appliance by this interface and also receive messages or warnings from the machine on the user interface.
  • the advantages of the invention are as follows.
  • the method according to the invention improves the quality of the treatment of laundry by allowing optimizing the amount of laundry in the drum, thereby preventing insufficient or inhomogeneous contact of detergent with the laundry or, in the case of a drying cycle, insufficient or inhomogeneous contact with hot air.
  • the issuing of a warning or notification allows the user to take action and change the amount of laundry accordingly.
  • the displaying of a warning or notification on a display makes it convenient for the user to recognize the overload condition. By maintaining the overload indication or showing it at the end of the process, the user obtains the distinct message that a loss of quality of the laundry treatment process is related to the overload condition. This can prevent the user from relating this quality loss to the appliance in general.
  • a laundry treatment appliance 2 which is built as a front-loading washing machine and comprises housing or casing 6 with a preferable parallelepiped shape, the casing 6 comprising a front wall 10, two side walls 14, a cover plate 20 and a rear wall (not shown). Front wall 10 and side walls 14 are preferably part of a cabinet.
  • a front door 24 is provided which can be opened for loading or unloading laundry through an opening 28 into a washing drum and which can be closed. Door 24 can be preferably operated, especially opened and closed, by a handle 26.
  • a washing tub 30 is contained within casing 6, whereby a rotatable and perforated (perforation is not shown) drum 36 is contained by the washing tub 30.
  • Both washing tub 30 and drum 36 have a substantially cylindrical shape.
  • the tub 30 is suspended in a floating manner inside casing 6 by means of a number of coil springs 44 and shock absorbers 46.
  • the drum 36 is rotated by an electric motor 68, which transmits the rotating motion of a motor shaft to the drum by a belt/pulley system 70.
  • the motor can be directly associated with the shaft of the drum 36.
  • the tub 30 is preferable connected to casing 6 by means of an elastic bellows 52 or gasket.
  • Tub 30 preferably comprises two complementary hemi-shells 64, 66 structured for being reciprocally coupled to form tub 30.
  • the laundry appliance can be a combined washer and dryer or a dryer, in latter case the tub is not provided.
  • the preferred washing machine shown in FIG.1 on a front panel 40 comprises a drawer 42 with a front plate 34 and a handle 36 for pulling out and pushing back in drawer 42.
  • Drawer 42 comprises at least one compartment for detergent or washing additives.
  • Adjacent to drawer 42 preferably a rotatable or rotary knob 38 is arranged for selecting a laundry treatment program and/or at least one parameter of a laundry treatment program.
  • knob 38 has also a push-functionality and can be pressed for selected and/or confirmation of selected options.
  • Knob 38 is provided on a user interface 62 which can provide further indicating and/or control elements (not shown).
  • Knob 38 is preferably arranged on front panel 40 adjacent to drawer 42.
  • Display 50 On front panel 40, a display 50 is arranged on user interface 62. Display 50 comprises a dedicated area 54. A control unit 56 is indicated schematically which is configured to conduct a method which will be described below.
  • a method according to the invention in a first preferred embodiment is shown as a flow chart and is discussed in connection with the appliance 2 shown in FIGs. 1-3 .
  • a laundry treatment process is selected.
  • a step 86 laundry is loaded into the drum 36. Both steps can be performed in the order described or in reverse order. They can also at least partially overlap in time in any of the described orders.
  • the selected laundry treatment process is started. This is preferably done when a user interaction with the appliance 2 is performed. Especially preferred is the user pressing a dedicated button such as a start button.
  • a step 96 the amount of laundry / laundry load in the drum is estimated.
  • this laundry load estimation is performed by rotating the drum and measuring electrical and/or mechanical parameters such as current or voltage of the motor, or angular velocity, position or motor torque. This step is performed after the steps 80, 86, and 92.
  • the laundry load estimation can be performed by a weight sensor which measures the weight of the laundry which is arranged in the drum. In this case, the step 96 can at least partially overlap with the step 86.
  • a decision 98 it is decided if the estimated amount of laundry is larger than a laundry load threshold value. If this is not the case, the method branches to a step 120, in which the laundry process is continued and finished.
  • step 100 a notification is issued.
  • the notification notifies the user that the amount of laundry loaded into the drum is larger than a threshold value.
  • the notification is preferably issued on a the display 50, most preferably on the dedicated area 56 of the display 50.
  • the laundry load threshold value depends in the present embodiment on the selected laundry treatment process. It can also depend on the kind or type of laundry loaded in the drum which can be determined by the appliance 2 or which can be inputted by the user as a separate option.
  • a step 106 is performed after step 100.
  • the appliance does not continue with the laundry treatment process but waits for a waiting amount of time, which allows the user to access the drum 36 and adjust the amount of laundry by removing laundry from the drum 36.
  • the waiting amount of time is preferably between 10 and 60 seconds.
  • the method decides if the laundry treatment process is continued with a laundry load amount which is larger than the threshold value. If not the case, i.e. the laundry load amount estimated in step 96 has been changed in step 106 to be smaller or equal to the threshold value, the method branches to step 120 in which the laundry treatment process is prosecuted and finished. If the process has continued with an overload condition, i.e. the estimated amount of laundry is larger than the threshold value, the method continues in a step 116, in which the notification of step 100 is maintained.
  • the notification is shown during the whole laundry treatment process, making it at any time during the process possible for the user to recognize that the laundry treatment process is conducted with an overload condition, which can lead to an non-optimal treatment of the laundry. Thereby the user can recognize that the non-optimal treatment of the laundry is not related to a low quality and/or malfunction of the appliance. She or he recognizes that an enhancement of the laundry treatment quality can be achieved by not overloading the drum 36 with laundry.
  • step 100 instead of or additionally keeping the notification of step 100, another notification can be issued.
  • the new notification can preferably be issued in the final phase of the laundry treatment process and/or after the end of the laundry treatment process in step 120.
  • the user can therefore when returning back to the appliance take note of the notification and learn that her or his laundry has been treated while being in an overload decision.
  • step 120 the laundry process is continued and finished.
  • the method described is preferably conducted by the control unit 56.
  • FIG. 5 A method in a second preferred embodiment according to the invention is shown in FIG. 5 in a second preferred embodiment.
  • a laundry treatment process is selected.
  • a step 86 laundry is loaded into the drum. Both steps can be performed in the order described or in reverse order. They can also at least partially overlap in time in any of the described orders.
  • the selected laundry treatment process is started. This is preferably done when a user interaction with the appliance 2 is performed. Especially preferred is the user pressing a dedicated button such as a start button.
  • a step 96 the amount of laundry / laundry load in the drum is estimated.
  • this laundry load estimation is performed by rotating the drum and measuring electrical and/or mechanical parameters such as current or voltage of the motor, or angular velocity, position or motor torque. This step is performed after the steps 80, 86, and 92.
  • the laundry load estimation can be performed by a weight sensor which measures the weight of the laundry which is arranged in the drum. In this case, the step 96 can at least partially overlap with the step 86.
  • a decision 98 it is decided if the estimated amount of laundry is larger than a laundry load threshold value. If this is not the case, the method branches to a step 120, in which the laundry process is continued and finished.
  • step 100 a notification is issued.
  • the notification notifies the user that the amount of laundry loaded into the drum is larger than a threshold value.
  • the notification is preferably issued on a display 50, preferably on dedicated area 56 of the display 50.
  • the laundry load threshold value depends in the present embodiment on the selected laundry treatment process. It can also depend on the kind or type of laundry loaded in the drum which can be determined by the appliance 2 or which can be inputted by the user as a separate option.
  • a step 106 is performed after step 100.
  • the appliance does not continue with the laundry treatment process but waits for a waiting amount of time, which allows the user to access the drum and adjust the amount of laundry by removing laundry from the drum.
  • the waiting amount of time is preferably between 10 and 60 seconds.
  • a decision 108 it is determined if an interaction with the appliance 2 occurred which is linked to a possible access of laundry in the drum 36.
  • this interaction is the process of opening the door 24 and subsequent closing again the door 24. Both the opening and the closing of door 24 are detected by a door sensor of appliance 2. If the appliance 2 has a weight sensor, changes in the measured weight of the laundry loaded into drum 36 are alternatively or in addition to the sensing of the door status the described interaction linked to a possible change of the laundry.
  • step 126 the method continues with a step 126 in which the selected laundry treatment process is prosecuted and then finished with one set of operational parameters.
  • the notification of step 100 is either maintained and/or a new notification is issued as described in connection with the embodiment of FIG. 4 .
  • the operational parameters can depend on the interaction and/or the estimation of the laundry amount in step 96 and/or the laundry treatment process selected in step 80.
  • step 140 the method prosecutes the laundry treatment process with the set of operational parameters of step 126.
  • this step 140 is chosen if the time interval between opening the door 24 and closing the door 24 is smaller than a predefined minimum time interval. In this case, the time span is assumed to be too short of a laundry change at all or a considerable change of laundry that would make an accurate determination of the current laundry necessary again. In this case, the operational parameters do not need to be changed.
  • step 142 the laundry treatment process is prosecuted with operational parameters which are different from the previously chosen operational parameters.
  • the operational parameters can depend on the interaction and/or the estimation of the laundry amount in step 96 and/or the laundry treatment process selected in step 80.
  • step 144 the steps 96 to 108 are repeated for a prescribed number of times.
  • the laundry treatment can be performed as known in the art. Water is introduced into the tub and one or more washing, rinsing spinning phases are performed.
  • the notification is removed again before the method reaches step 126.
  • the notification is then given again at the end of step 126, i.e. after the laundry treatment cycle has finished. Also in this way, with a large probability the user will recognize the notification.
  • the notification of the overload condition is in two stages of the method made visible on the display 50. It is issued in step 100 after the estimation of the current laundry load and - if an overload condition still persists - is either maintained until step 126 or issued again in step 126.
  • the methods described in connection with FIGs. 4 and 5 are performed in the control unit of a combined washer/dryer.
  • the laundry load threshold value in these further preferred embodiments is set as the maximum amount of laundry which can be dried in the combined washing and drying process. This threshold value is usually smaller than the value of an amount of laundry that can be washed. By choosing this value in the combined process, it is reliably assured that both the washing phases and the drying phases can be effectively performed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (18)

  1. Verfahren zum Betreiben einer Wäschebehandlungsvorrichtung (2), umfassend eine drehbare Trommel (36), in die Wäsche geladen werden kann und die durch einen Motor (68) gedreht wird, wobei eine schließbare Tür (24) vorgesehen ist, die Zugang zu der Trommel (36) bereitstellt; mit den folgenden Schritten
    a) Auswählen eines Wäschebehandlungsvorgangs;
    b) Laden von Wäsche in die Trommel (36);
    c) Starten des ausgewählten Wäschebehandlungsvorgangs;
    d) Schätzen der Menge der Wäscheladung;
    gekennzeichnet durch die folgenden Schritte
    e) Ausgeben einer Benachrichtigung einer Überlastbedingung an den Benutzer, wenn die Menge an Wäsche größer als ein Wäscheladungsschwellenwert ist;
    f) wenn die Menge an Wäsche größer als der Wäscheladungsschwellenwert ist, Warten für eine vorbestimmte Wartezeitdauer vor Weiterverfolgen des Wäschebehandlungsvorgangs, wobei dem Benutzer dabei ein Zugang zu der Trommel (36) zum Ändern der Menge an Wäscheladung gewährt wird;
    g) wenn der Wäschebehandlungsvorgang bei größerer Wäscheladung als der Wäscheladungsschwellenwert weiterverfolgt wird, Aufrechterhalten der Benachrichtigung und/oder Ausgeben einer weiteren Benachrichtigung, dass die Menge an Wäsche größer als der Wäscheladungsschwellenwert ist, bei mindestens einem der Folgenden:
    - während des Wäschebehandlungsvorgangs;
    - während einer Endphase des Wäschebehandlungsvorgangs;
    - bei und/oder nach dem Ende des Wäschebehandlungsvorgangs.
  2. Verfahren nach Anspruch 1, ferner umfassend die folgenden Schritte:
    h) Bestimmen, ob eine Interaktion stattgefunden hat, die mit einem möglichen Zugang zu Wäsche in der Trommel (36) in Zusammenhang steht;
    i) wenn die Interaktion nicht stattgefunden hat, Weiterverfolgen des Wäschebehandlungsvorgangs mit einem Satz an Betriebsparametern;
    j) wenn die Interaktion stattgefunden hat, Durchführen von einem der Folgenden:
    - Weiterverfolgen des Wäschebehandlungsvorgangs mit dem Satz an Betriebsparametern, oder
    - Weiterverfolgen des Wäschebehandlungsvorgangs mit einem anderen Satz an Betriebsparametern, der sich von dem einen Satz an Betriebsparametern unterscheidet, oder
    - Durchführen der Schritte d) bis j) bis zu einer vorbestimmten Anzahl von Malen.
  3. Verfahren nach Anspruch 2, wobei der Satz an Betriebsparametern zum Durchführen des Behandlungsvorgangs an Wäsche in Abhängigkeit von einem oder mehreren von Folgendem ausgewählt ist:
    - der Interaktion;
    - des in Schritt d) durchgeführten Schätzens der Menge an Wäsche;
    - des in Schritt a) ausgewählten Wäschebehandlungsvorgangs.
  4. Verfahren nach einem der Ansprüche 2 bis 3, wobei die Interaktion Öffnen und anschließendes Schließen der Tür (24) umfasst, und wobei der Satz an Betriebsparametern von dem Zeitintervall zwischen dem Öffnen und dem Schließen der Tür (24) abhängt.
  5. Verfahren nach Anspruch 4, wobei die Betriebsparameter auf den einen Satz an Betriebsparametern eingestellt sind, wenn das Zeitintervall kleiner als ein Schwellenzeitintervall ist oder wenn die in zwei aufeinanderfolgenden Wiederholungen von Schritt d) durchgeführten Schätzungen der Menge an Wäsche im Wesentlichen dieselbe Wäschemenge zum Ergebnis haben.
  6. Verfahren nach einem der Ansprüche 1 bis 5, wobei die Benachrichtigung aufrechterhalten wird, bis der Wäschebehandlungsvorgang abgeschlossen ist und/oder die Tür (24) geöffnet wird und/oder eine Benutzerinteraktion mit der Vorrichtung (2) stattgefunden hat.
  7. Verfahren nach einem der Ansprüche 1 bis 6, wobei der Wäscheladungsschwellenwert einer maximalen Menge an Wäsche entspricht, die in dem ausgewählten Wäschebehandlungsvorgang erwartungsgemäß behandelt wird.
  8. Verfahren nach einem der Ansprüche 1 bis 7, wobei die Benachrichtigung auf einer Anzeige (50) der Vorrichtung (2) vorgenommen wird.
  9. Verfahren nach Anspruch 8, wobei eine Angabe in Zusammenhang mit der Menge an Wäscheladung auf der Anzeige (50) vorgenommen wird.
  10. Verfahren nach Anspruch 8 oder 9, wobei auf der Anzeige (50) signalisiert wird, dass die Menge an Wäsche geändert werden kann.
  11. Verfahren nach einem der Ansprüche 8 bis 10, wobei während des Wäschebehandlungsvorgangs auf der Anzeige (50) angegeben wird, ob die aktuelle Wäscheladung unter dem Wäscheladungsschwellenwert liegt, und wobei die Angabe aufrechterhalten wird, bis der Wäschebehandlungsvorgang abgeschlossen ist und/oder bis eine Benutzerinteraktion stattfindet, nachdem der Wäschebehandlungsvorgang abgeschlossen wurde.
  12. Verfahren nach einem der Ansprüche 1 bis 11, wobei die Wartezeitdauer zwischen 10 und 60 Sekunden beträgt.
  13. Verfahren nach einem der Ansprüche 1 bis 11, wobei Schritt d) ohne und/oder vor Zuführen von Wasser in eine Wanne (30) der Vorrichtung (2), in der die Trommel (36) drehbar angeordnet ist, durchgeführt wird.
  14. Verfahren nach einem der Ansprüche 1 bis 13, wobei in Schritt d) die Wäscheladungsmenge durch Drehen der Trommel (36) und Messen elektrischer und/oder mechanischer Parameter in Zusammenhang mit dem Motor (68) bestimmt wird.
  15. Verfahren nach einem der Ansprüche 1 bis 14, wobei der Wäscheladungsschwellenwert von dem ausgewählten Wäschebehandlungsvorgang und/oder einem Wäschetyp abhängt, der der Vorrichtung (2) durch den Benutzer kommuniziert oder durch die Vorrichtung (2) eingeschätzt wird.
  16. Verfahren nach einem der Ansprüche 1 bis 15, wobei die Wäschebehandlungsvorrichtung (2) eine Waschmaschine, ein Trockner oder eine Waschmaschinen-Trocknerkombination ist.
  17. Verfahren nach einem der Ansprüche 1 bis 15, wobei die Wäschebehandlungsvorrichtung (2) eine Waschmaschinen-Trocknerkombination ist, wobei der Wäschebehandlungsvorgang ein kombinierter Wasch- und Trocknungszyklus ist, und wobei der Wäscheladungsschwellenwert von Schritt e) ein Schwellenwert basierend auf der maximalen Wäscheladung ist, die in dem kombinierten Wasch- und Trocknungszyklus getrocknet werden kann.
  18. Wäschebehandlungsvorrichtung (2), umfassend eine drehbare Trommel (36), in die Wäsche geladen wird und die durch einen Motor (68) gedreht wird,
    gekennzeichnet durch
    eine Steuereinheit (56), die ausgelegt und/oder programmiert ist, ein Verfahren nach einem der vorhergehenden Ansprüche durchzuführen.
EP16174132.7A 2016-06-13 2016-06-13 Verfahren zum betreiben einer wäschebehandlungsvorrichtung und wäschebehandlungsvorrichtung Active EP3257995B1 (de)

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US20220282417A1 (en) * 2021-03-04 2022-09-08 Whirlpool Corporation Automatic laundry treatment appliance with load height detection

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Publication number Priority date Publication date Assignee Title
DE8914729U1 (de) * 1989-12-15 1990-07-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Wäschepflegegerät, insbesondere Waschmaschine oder Wäschetrockner
DE19705878A1 (de) * 1997-02-15 1998-08-20 Aeg Hausgeraete Gmbh Programmwahl- und Anzeigesystem für programmgesteuerte Waschmaschinen
GB0006502D0 (en) 2000-03-18 2000-05-10 Notetry Ltd Laundry appliance
KR100519329B1 (ko) * 2002-11-26 2005-10-07 엘지전자 주식회사 포량 감지방법
EP2458058B1 (de) * 2010-11-26 2016-08-10 Electrolux Home Products Corporation N.V. Waschmaschine
CN102666961B (zh) * 2009-12-31 2015-06-17 阿塞里克股份有限公司 具有马达过载保护的洗衣机
EP2843125B1 (de) * 2013-08-30 2019-11-13 Electrolux Appliances Aktiebolag Wäschebehandlungsvorrichtung und Verfahren zum Betreiben einer Wäschebehandlungsvorrichtung

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