EP3246451B2 - Verfahren und vorrichtung zum betreiben eines waschautomaten - Google Patents

Verfahren und vorrichtung zum betreiben eines waschautomaten Download PDF

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Publication number
EP3246451B2
EP3246451B2 EP17171063.5A EP17171063A EP3246451B2 EP 3246451 B2 EP3246451 B2 EP 3246451B2 EP 17171063 A EP17171063 A EP 17171063A EP 3246451 B2 EP3246451 B2 EP 3246451B2
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EP
European Patent Office
Prior art keywords
drum
laundry
washing machine
washing
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17171063.5A
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German (de)
English (en)
French (fr)
Other versions
EP3246451B1 (de
EP3246451A1 (de
Inventor
Dirk Sieding
Alexander Löffler
Felix Schäfer
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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Publication date
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Priority claimed from DE102016110550.3A external-priority patent/DE102016110550B4/de
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL17171063.5T priority Critical patent/PL3246451T5/pl
Publication of EP3246451A1 publication Critical patent/EP3246451A1/de
Publication of EP3246451B1 publication Critical patent/EP3246451B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/28—Electric heating
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements

Definitions

  • the invention relates to a method for operating a washing machine.
  • Some laundry care appliances may have induction heating.
  • a comfort smoothing function with a small amount of free liquor can also be provided below a drum casing of a laundry drum.
  • heating by means of radiators can only be carried out if there is a free liquor available.
  • the free liquor can be heated and heat can be transferred to the laundry when the liquor is exchanged.
  • the DE 10 2014 208 514 A1 and the DE 10 2008 043281 A1 describes a laundry treatment device with induction heating.
  • the EP 2 540 896 A1 describes a laundry treatment device with a flooding device.
  • the object of the invention is to provide an improved method for operating a washing machine.
  • the advantages that can be achieved with the invention consist, in addition to induction heating for washing machines and washer-dryers, in particular for washing machines and washer-dryers with a circulation function, for example, among other things, that water, detergent and energy are saved.
  • heating without free liquor can also be made possible and damp laundry can be heated without additional consumption of additional water.
  • switching the heating on and off in the heating step can be avoided, particularly when steam is used. No free liquor needs to be heated, which can lead to energy savings.
  • This can be achieved in a cost-effective and structurally advantageous manner, with an electrical coil being arranged above or to the side of a tub and a drum being able to be heated evenly.
  • the drum can be temperature-controlled, warmed up or heated up directly and as uniformly or evenly as possible.
  • the drum can act as a heating element for tempering or heating laundry.
  • the method can be carried out in connection with or using a non-claimed embodiment of a washing machine mentioned below.
  • the eddy currents can be induced by means of an electrical signal applied to the at least one electrical coil.
  • the automatic washing machine can be designed as a washing machine, a washer-dryer or the like.
  • a drum wall can represent a drum shell.
  • the at least one electric coil can be arranged outside of the drum.
  • the drum may be rotatable relative to an electrical coil.
  • the circulating step can be carried out once or repeatedly during the inducing step.
  • Such an embodiment offers the advantage that by heating the drum wall combined with a circulation, a uniform heat distribution in the laundry can be realized in an energy- and water-saving manner, even with large batches of laundry.
  • the circulating step can also be carried out once or repeatedly before and additionally or alternatively after the inducing step.
  • the inducing step can be carried out repeatedly before, during and additionally or alternatively after the circulating step.
  • a method for operating a washing machine having a drum for receiving laundry, the drum having at least one drum wall made of a ferromagnetic material, at least one electrical coil arranged adjacent to the drum and a flooding unit, the method has at least the following steps: applying an electrical signal to the at least one electrical coil to induce eddy currents in the at least one drum wall to heat the drum; and issuing a flood signal to the flood unit to circulate wash suds expelled from the laundry through the drum to flood the laundry with wash suds to saturate the laundry with wash suds.
  • the method can be carried out in connection with or using an embodiment of a washing machine mentioned below.
  • the method can in particular be executable by an embodiment of a device mentioned below or by a control unit.
  • an electrical signal is applied which is suitable for generating a heating output which is dependent on the amount of laundry (280) loaded in the drum and on the temperature of the drum.
  • the dispensing step can be carried out repeatedly before, during and additionally or alternatively after the applying step.
  • Such an embodiment offers the advantage that by heating the drum wall combined with activated circulation, while saving energy and water, an even heat distribution can be realized in the laundry, even with large batches of laundry.
  • a high-frequency electrical alternating voltage can be applied as an electrical signal in the application step in order to generate an alternating magnetic field with which the at least one drum wall can be applied.
  • the electrical signal can be pulse width modulated.
  • the approach presented here also creates a device for controlling an automatic washing machine, which is designed to carry out, control or implement the steps of a variant of a method presented here in corresponding devices.
  • the device can have an embodiment of a washing machine which is not claimed below.
  • the object on which the invention is based can also be achieved quickly and efficiently by this embodiment variant of the invention in the form of a device.
  • the device can be designed to read in input signals and to determine and provide output signals using the input signals.
  • An input signal can, for example, be read in via an input interface of the device Display sensor signal.
  • An output signal may represent a control signal or a data signal that may be provided at an output interface of the device.
  • the device can be designed to determine the output signals using a processing specification implemented in hardware or software.
  • the device can include a logic circuit, an integrated circuit or a software module and can be implemented as a discrete component, for example, or can be comprised of a discrete component.
  • a large contact area for heat transfer to the laundry can be provided by means of the drum as a heating element.
  • heat can be transferred quickly to the laundry, so that the heating-up time can be kept short.
  • all of the drum walls of the drum can be formed from the ferromagnetic material.
  • the drum can be formed entirely of the ferromagnetic material. Such an embodiment offers the advantage that the drum can be heated uniformly and over a large area.
  • the at least one electrical coil can be formed flat and additionally or alternatively from copper.
  • the at least one electrical coil can be operated with high-frequency electrical alternating voltage.
  • the washing machine can have a tub, it being possible for the drum to be arranged inside the tub.
  • the at least one electrical coil can be arranged on the tub.
  • the tub can be drum-shaped.
  • the at least one electric coil can be arranged in the washing machine outside of a floor area arranged between the drum and a floor of the washing machine. More specifically, the at least one electric coil may be arranged at the top or side relative to the drum with respect to an orientation in an installed, set up or in-use state of the washing machine.
  • Such an embodiment which is not claimed, offers the advantage that a simple construction of the washing machine and uncomplicated access to the at least one coil can be implemented.
  • the automatic washing machine can also have at least one shielding element for shielding a magnetic field generated by the at least one electric coil in the direction away from the drum.
  • at least one shielding element for shielding a magnetic field generated by the at least one electric coil in the direction away from the drum.
  • the at least one shielding element can have at least one ferrite plate and additionally or alternatively at least one aluminum plate.
  • magnetic fields that arise can be shielded by means of ferrite plates, with any remaining magnetic fields being additionally shielded by means of an aluminum plate, with ferrite plates being able to be arranged between the drum and the aluminum plate.
  • FIG 1 shows a schematic representation of a washing machine 100 for washing laundry according to an embodiment of the invention.
  • the automatic washing machine 100 is designed here as a washing machine, a washer-dryer or the like.
  • the washing machine 100 can also be referred to as a laundry treatment device or laundry care device.
  • the washing machine 100 has a drum 110 for receiving the laundry.
  • the drum 110 is rotatably mounted in the automatic washing machine 100 .
  • At least one wall or drum wall of the drum 110 is formed from a ferromagnetic material.
  • all of the drum walls of drum 110 are formed from the ferromagnetic material.
  • the automatic washing machine 100 has, for example, only one electric coil 120 .
  • the electrical coil 120 is used to induce eddy currents in the at least one drum wall of the drum 110 .
  • the drum 110 is heated by the eddy currents.
  • the electrical coil 120 is arranged adjacent to the drum 110 so that an alternating magnetic field generated by the coil 120 acts on at least one section of the drum 110 .
  • the electric coil 120 is arranged outside of a floor area in the washing machine 100 which is arranged between the drum 110 and a floor of the washing machine 100 .
  • the electrical coil 120 is shaped as a flat coil or planar.
  • the electrical coil has 120 turns of copper.
  • the automatic washing machine 100 can have a plurality of electrical coils 120 .
  • the washing machine 100 has according to in figure 1 shown exemplary embodiment of the invention also has a flooding unit 130 .
  • the flooding unit 130 is designed to circulate wash suds through the drum 110 for flooding the laundry with wash suds.
  • the circulation unit 130 is designed, for example, to circulate the wash suds intermittently through the drum 110 in order to keep the laundry in a damp state.
  • the washing machine 100 also has a tub 140 on. Inside the tub 140, the drum 110 is arranged. In this case, the electric coil 120 is arranged on the tub 140 , for example. A wall section of the tub 140 is arranged between the electric coil 120 and the drum 110 .
  • the washing machine 100 also has only one shielding element 150 by way of example.
  • the shielding element 150 is designed to shield or dampen a magnetic field or magnetic field generated by the electric coil 120 in the direction away from the drum 110 .
  • the electrical coil 120 is arranged between the shielding element 150 and the drum 110 or the tub 140 .
  • the washing machine 100 also has an operating device 160 or device 160 for operating the washing machine 100 .
  • the operating device 160 is, for example, a control unit or the like.
  • the shielding element 150 is arranged between the electric coil 120 and the operating device 160, so that components of the operating device 160 that are sensitive to magnetic fields can be protected by the shielding element 150 from the magnetic fields generated by the coil 120.
  • the operating device 160 has an application device 162 .
  • the application device 162 is designed to apply an electrical signal 172 for inducing eddy currents in the at least one drum wall to heat the drum 110 to the electrical coil 120 .
  • the electrical signal 172 can be a high-frequency alternating electrical voltage.
  • the operating device 160 has according to in figure 1 shown embodiment of the invention also has an output device 164.
  • the output device 164 is designed to apply a flooding signal 174 to the flooding unit 130 in order to cause wash suds to be circulated through the drum for flooding the laundry with wash suds.
  • figure 2 shows a schematic representation of a section of a washing machine according to an embodiment of the invention.
  • figure 2 shows the section of the washing machine in a schematic sectional view.
  • the in figure 2 shown washing machine from the washing machine figure 1 .
  • the drum 110, the electric coil 120 and the tub 140 are shown.
  • Laundry 280 is also shown in the drum 110 by way of example.
  • the electrical coil 120 has according to in figure 2 shown embodiment of the invention has a curved sectional profile. A curvature of the electrical coil 120 follows a curvature of the drum 110 and the tub 140.
  • FIG 2 shows figure 2 a schematic diagram of induction heating for a washing machine.
  • the electrical coil 120 is mounted on an upper side or on the side of the tub 140 in relation to an orientation in a mounted state or operating state.
  • the drum 110 can be inductively heated by means of the electrical coil 120 .
  • figure 3 shows a schematic representation of a section of a washing machine according to an embodiment of the invention. While showing figure 3 the section of the washing machine in a sectional view.
  • the inside figure 3 washing machine shown corresponds to or resembles the washing machine figure 1 .
  • From the washing machine are in figure 3 here the electric coil 120 and the tub 140 are shown.
  • the electrical coil 120 is arranged on the tub 140 .
  • figure 4 shows a flowchart of a method 400 for washing laundry according to an embodiment of the invention.
  • the method 400 for washing is in connection with the automatic laundromat figure 1 , figure 2 or. figure 3 or a similar washing machine executable.
  • the method 400 for washing has a step 410 of inducing eddy currents in the at least one drum wall to heat the drum.
  • the method 400 of washing also includes a step 420 of circulating wash suds through the drum to flood the laundry with wash suds.
  • the circulating step 420 can be carried out before, during and/or after the inducing step 410 .
  • the step 420 of circulating can also be carried out repeatedly.
  • step 410 of inducing and step 420 of circulating can be carried out, for example, parallel to one another and/or at different times and/or at least temporarily intermittently.
  • FIG 5 shows a flowchart of a method 500 for operating according to an embodiment of the invention.
  • the method 500 can be implemented to operate a washing machine. More specifically, the method 500 is executable to turn off the automatic laundromat figure 1 , figure 2 or. figure 3 or to operate a similar washing machine.
  • the method 500 of operating in conjunction with the automatic laundromat is over figure 1 , figure 2 or. figure 3 or a similar washing machine executable.
  • the method 500 for operating by means of or using the operating device is off figure 1 or a similar operating device.
  • the operating device is off figure 1 configured to perform method 500 of operating.
  • the method 500 for operating has a step 510 of applying an electrical signal to the electrical coil.
  • the electrical signal applied causes eddy currents to be induced in the at least one drum wall by means of the electrical coil in order to heat the drum.
  • the electrical signal is, for example, a high-frequency electrical AC voltage.
  • the high-frequency electrical AC voltage is applied as an electrical signal, for example, in order to generate an alternating magnetic field with which the at least one drum wall of the drum is applied.
  • the electrical signal is pulse-width modulated depending on a load of laundry in the drum or a duty cycle or duty cycle of the electrical signal is modulated depending on the load.
  • the method 500 for operating also has a step 520 of outputting a flooding signal to a flooding unit.
  • the flooding signal is output or made available for output to the flooding unit.
  • the flood signal is adapted, when used by the flood unit, to cause wash suds to be circulated through the drum to flood the laundry with wash suds.
  • step 520 of dispensing can be carried out before, during and/or after step 510 of creating.
  • the step 520 of outputting can also be carried out repeatedly.
  • step 510 of applying and step 520 of outputting can be carried out, for example, in parallel with one another and/or at different times and/or at least temporarily intermittently.
  • FIG. 6 shows a flow diagram of a process 600 for washing according to an embodiment of the invention.
  • the process 600 for washing is off in connection with the washing machine figure 1 , figure 2 or. figure 3 or a similar washing machine executable.
  • the process 600 for washing associated with the method 400 for washing is off figure 4 and/or with the method 500 for operating figure 5 or similar procedures.
  • a block 602 laundry is brought to a target saturation with wash suds or to a target amount of water. Subsequently, in a block 604, a flooding is started in order to bring residual water into the laundry. As a result, there is no longer any free liquor and the water or washing lye is completely or at least approximately completely absorbed in the batch of laundry.
  • an induction in particular with a setting of a so-called booster operation, for example with an output of 2.5 kilowatts or the like, is started until a temperature rise of 10 Kelvin or a starting energy calculated as a function of the tied fleet is reached.
  • the so-called booster operation can be selected to quickly get up to temperature.
  • the induction is adjusted in normal operation.
  • the output can be set depending on the load so that the heating energy that is brought in can be optimally absorbed by the laundry.
  • heating energy of, for example, 1.0 kilowatts can be introduced with a small load, heating energy of, for example, 1.5 kilowatts with a medium load, and heating energy of, for example, 2.0 kilowatts with a large load.
  • a flow of heat can be increased by the flooding, and heat can also enter a core of the laundry.
  • circulation is carried out continuously until a target temperature Tsoll is reached.
  • the flooding can be carried out, for example, every 5 minutes, with a medium load, for example, every 2 minutes, and with a large load, for example, every 30 seconds.
  • a rotational speed of the drum is hereby adapted to the circulation sequences or to the loading. If a current speed is greater than a circulation speed n circulation , flooded.
  • the circulation speed n circulation can be in the range from 60 to 100 rpm , for example. Speeds of more than 60 rpm can expel lye, which can then be flooded or circulated to flood.
  • the induction mode is then switched off in a block 614 when the target temperature Tsoll has been reached. Thereafter, the process 600 proceeds to a decision block 616 where it is checked whether or not a post heat function is active. If the decision block 616 determines that the post heat function is active, the process 600 proceeds to a block 618 .
  • the induction mode is switched over to a post-heating mode.
  • a power level is set as a function of the target temperature Tsoll.
  • a power input can be between 0.3 kilowatts and 0.7 kilowatts, for example.
  • the circulation can be carried out continuously, for example every minute, regardless of the load if a current speed is over 60 min -1 .
  • An energy requirement for maintaining a temperature depends on the temperature level, with the load quantity or laundry load playing a subordinate role.
  • a further program or sequence of a washing program is processed. If it is determined at decision block 616 that the post heat function is not active, then the process 600 transfers directly from decision block 616 to block 622.
  • An induction heating is implemented, in which the at least one drum wall or drum casing of the drum 110 can be heated or tempered by means of the electrical coil 120 .
  • heating energy can be supplied at an early stage even in an operating mode of the automatic washing machine 100 referred to as stepped refueling.
  • the drum 110 is warmed up for the actual heating process. After the laundry 280 is sufficiently damp, the actual heating process begins.
  • the laundry 280 is, for example, in a normal washing cycle, z. B. a ramp rhythm or the like rotated. In phases, the wash 280 optionally becomes short thrown at. Such an expulsion of lye activates a pressure-dependent flooding.
  • the heat from the drum wall or the drum casing is transferred to the suds and is brought directly into the laundry 280 by the introduction of the washing suds by means of circulation.
  • This process can be carried out depending on the load.
  • the larger a batch or batch of laundry the more often the suds can be expelled by spinning or the like.
  • a speed of the drum 110 can be set to be increased. In the case of small batches of laundry, there is no need to spin the laundry completely because there is sufficient contact between the laundry 280 and the drum 110 even with normal washing rhythms.
  • the circulation can be activated, for example, once a minute or the like.
  • the circulation can be activated every two minutes or the like, for example.
  • the flooding can optionally be omitted.
  • a permanent direct contact of the drum 110 with the items to be washed or the laundry 280 is given at a drum speed equal to or higher than the so-called contact speed.
  • a power output targeted for the process step can be set by means of the electrical signal 172 through a regulated power output of the induction heating, similar to a hob.
  • the output can be set in such a way that the laundry 280 can absorb the heating energy that has been introduced.
  • a load of laundry 280 can also be taken into account.
  • a heating output of, for example, 1.2 kilowatts can be introduced with a small load, a heating output of, for example, 1.8 kilowatts with a medium load, and a heating output of, for example, 2.1 kilowatts with a large load.
  • a heating output of 1.0 kilowatts, for example, can be introduced for post-heating, and a heating output of 3.0 kilowatts, for example, can be introduced for rapid heating (booster).
  • a washing drum 110 or drum 110 with a drum wall made of ferromagnetic material is used for such an induction heating.
  • a flat copper coil 120 that can be operated, for example, with high-frequency alternating voltage is attached outside the drum wall. This generates an alternating magnetic field, which generates eddy currents in the drum wall. The drum wall heats up due to Joule losses. In this way, the entire drum is heated by the induction heating.
  • the resulting magnetic fields can be shielded using ferrite plates.
  • the remaining magnetic fields can additionally be shielded by an aluminum plate adjacent to the ferrite plates.
  • the ferrite plates can be arranged between the aluminum plate and the electric coil 120 .
  • the ferrite plates and the aluminum plate represent shielding elements 150 of the washing machine 100.
  • a washing method with active circulation in which the laundry 280 is at least temporarily only brought into a damp state, heating can be made possible before, during and/or after the respective water supply processes, a so-called graduated refueling. In this way, warming can already be achieved with a staged refueling. Furthermore, for example, a cumbersome heating process by means of steam can be avoided. In addition, however, a steam smoothing function can be implemented quickly and reliably.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP17171063.5A 2016-05-19 2017-05-15 Verfahren und vorrichtung zum betreiben eines waschautomaten Active EP3246451B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17171063.5T PL3246451T5 (pl) 2016-05-19 2017-05-15 Sposób i urządzenie do obsługi pralki automatycznej

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016109172 2016-05-19
DE102016109178 2016-05-19
DE102016109200 2016-05-19
DE102016110550.3A DE102016110550B4 (de) 2016-05-19 2016-06-08 Verfahren zum Waschen von Wäsche, Verfahren und Vorrichtung zum Betreiben eines Waschautomaten und Waschautomat zum Waschen von Wäsche

Publications (3)

Publication Number Publication Date
EP3246451A1 EP3246451A1 (de) 2017-11-22
EP3246451B1 EP3246451B1 (de) 2020-06-24
EP3246451B2 true EP3246451B2 (de) 2023-03-29

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EP17171063.5A Active EP3246451B2 (de) 2016-05-19 2017-05-15 Verfahren und vorrichtung zum betreiben eines waschautomaten

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PL (1) PL3246451T5 (pl)

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EP3757269B1 (en) * 2018-02-22 2024-07-31 LG Electronics Inc. Washing apparatus and method for controlling same
KR102550766B1 (ko) * 2018-02-22 2023-07-04 엘지전자 주식회사 의류처리기기 및 의류처리기기의 제어방법
KR102525026B1 (ko) * 2018-02-23 2023-04-24 엘지전자 주식회사 세탁기 및 세탁기의 제어방법
US20210207315A1 (en) * 2018-05-21 2021-07-08 Electrolux Appliances Aktiebolag Laundry drier
KR20200042819A (ko) * 2018-10-16 2020-04-24 엘지전자 주식회사 세탁장치 및 이의 제어방법
KR20200042820A (ko) 2018-10-16 2020-04-24 엘지전자 주식회사 세탁장치 및 이의 제어방법
US11598042B2 (en) 2019-03-28 2023-03-07 Whirlpool Corporation Laundry treating appliance with induction heat

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