EP3336239A1 - Appareil de traitement de linge et procédé de commande d'appareil de traitement de linge - Google Patents

Appareil de traitement de linge et procédé de commande d'appareil de traitement de linge Download PDF

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Publication number
EP3336239A1
EP3336239A1 EP17206069.1A EP17206069A EP3336239A1 EP 3336239 A1 EP3336239 A1 EP 3336239A1 EP 17206069 A EP17206069 A EP 17206069A EP 3336239 A1 EP3336239 A1 EP 3336239A1
Authority
EP
European Patent Office
Prior art keywords
temperature
time
amount
drum
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17206069.1A
Other languages
German (de)
English (en)
Other versions
EP3336239B1 (fr
Inventor
Minsung PARK
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP3336239A1 publication Critical patent/EP3336239A1/fr
Application granted granted Critical
Publication of EP3336239B1 publication Critical patent/EP3336239B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/44—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of conditioning or finishing, e.g. for smoothing or removing creases
    • 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
    • D06F2103/08—Humidity
    • 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
    • D06F2103/28—Air properties
    • D06F2103/32—Temperature
    • 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
    • D06F2103/28—Air properties
    • D06F2103/36—Flow or velocity
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/50—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to heat pumps, e.g. pressure or flow rate
    • 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
    • D06F2105/16—Air properties
    • D06F2105/24—Flow or velocity
    • 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
    • D06F2105/26—Heat pumps
    • 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
    • D06F2105/30—Blowers
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

Definitions

  • the present invention relates to a laundry treatment apparatus and a control method thereof.
  • a laundry treatment apparatus is an apparatus that is capable of washing laundry, drying laundry, or both washing and drying laundry.
  • a laundry treatment apparatus that is capable of drying laundry includes a drum for receiving laundry and a hot air supply device for supplying heated air to the drum.
  • Conventional laundry treatment apparatuses include two types of hot air supply devices.
  • the first type of hot air supply device includes a supply duct for guiding external air to the drum, an exhaust duct for guiding the air in the drum out of the drum, a fan provided in any one of the supply duct and the exhaust duct, and a heater provided in the supply duct for heating air.
  • the second type of hot air supply device includes a circulation duct for discharging the air in the drum out of the drum and resupplying the air to the drum, a cooling unit provided in the circulation duct for condensing air, and a heater provided in the circulation duct for heating dehumidified air.
  • a heat pump may be used to cool and heat air.
  • a laundry treatment apparatus including a heat pump has a problem in that it is difficult to supply high-temperature air to the drum, whereby it is difficult to sterilize laundry.
  • the heat pump compared with a heater made of a heating wire (a resistance wire that generates heat when current is supplied thereto), the heat pump generates a small amount of heat. As a result, air having a temperature lower than the temperature of air supplied to the drum after being heated using the heating wire is supplied to the drum, whereby it is difficult to perform a sterilization course for supplying high-temperature air to the drum to kill bacteria in laundry.
  • a heating wire a resistance wire that generates heat when current is supplied thereto
  • the present invention is directed to a laundry treatment apparatus and a control method of a laundry treatment apparatus that substantially obviates one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a laundry treatment apparatus and a control method of a laundry treatment apparatus that is configured such that air heated by a heat pump is supplied in order to perform a sterilization course.
  • a control method of a laundry treatment apparatus including a drum for storing laundry, a duct provided outside the drum for guiding air discharged from the drum to the drum, a fan provided in the duct, a heat pump for performing heat exchange between air introduced into the duct and a refrigerant to dehumidify and heat the air, and a temperature sensing unit for measuring the temperature of the air introduced into the duct, includes operating the fan and the heat pump to supply heated air to the drum (a hot air supply step), measuring the temperature of the air discharged from the drum through the temperature sensing unit (a temperature measurement step), when the temperature of the air measured by the temperature sensing unit is equal to or higher than a predetermined reference temperature, measuring the amount of time for which the temperature of the air remains equal to or higher than the reference temperature (a time measurement step), and when the amount of time for which the temperature of the air remains equal to or higher than the reference temperature is equal to or greater than a reference amount of time, stopping the operation of the fan and the heat pump (a hot air supply step), measuring the
  • a laundry treatment apparatus includes a drum for storing laundry, a duct provided outside the drum for guiding air discharged from the drum to the drum, a fan provided in the duct, a heat pump for performing heat exchange between air introduced into the duct and a refrigerant to dehumidify and heat the air, a temperature sensing unit for measuring the temperature of the air introduced into the duct, and a controller being configured to perform a control method according to any one of the herein described embodiments.
  • the reference temperature and the reference amount of time may be uniform irrespective of the amount of laundry introduced into the drum.
  • the time measurement step may include comparing the accumulated value of the amount of time for which the temperature of the air measured by the temperature sensing unit is equal to or higher than the reference temperature with the reference amount of time.
  • the time measurement step may include comparing the amount of time for which the temperature of the air measured by the temperature sensing unit continuously remains equal to or higher than the reference temperature with the reference amount of time.
  • the reference temperature may be set to 60 °C to 70 °C.
  • the reference amount of time may be set to 50 minutes to 60 minutes.
  • the hot air supply completion step may include stopping the operation of the heat pump and maintaining the operation of the fan for a predetermined amount of time (a cooling step) and stopping the operation of the fan after the completion of the cooling step (a fan operation completion step).
  • the control method may further include rotating the drum while the hot air supply step is being performed (a drum rotation step).
  • the hot air supply step, the temperature measurement step, and the time measurement step may be performed when a sterilization course is selected through an input unit.
  • FIG. 1 is a view showing an example of a laundry treatment apparatus according to the present invention.
  • a laundry treatment apparatus 100 according to the present invention includes a cabinet 1, a drum 3 rotatably provided in the cabinet, a hot air supply unit 7 for supplying heated air to the drum, and a temperature sensing unit 9 for measuring the temperature in the drum.
  • the cabinet 1 is provided with a cabinet introduction port 11, through which laundry is introduced into or removed from the drum.
  • the cabinet introduction port 11 is opened and closed by a door 13, which is hinged to the cabinet 1
  • the drum 3 may include a cylindrical drum body 31 having an open front surface and an open rear surface and a lifter 33 protruding from the inner circumferential surface of the drum body toward the center of rotation of the drum body.
  • the drum 3 having the above structure is supported by a first support unit 15 and a second support unit 17 provided in the cabinet 1.
  • the first support unit 15 is fixed in the cabinet 1 to rotatably support the front surface of the drum body 31, and the second support unit 17 is fixed in the cabinet 1 to rotatably support the rear surface of the drum body 31.
  • the first support unit 15 is provided with an introduction port 151, which communicates with the cabinet introduction port 11. Consequently, the interior of the drum body 31 communicates with the outside of the cabinet 1 through the introduction port 151 and the cabinet introduction port 11.
  • the first support unit 15 is provided with a front support unit 157 for rotatably supporting the open front surface of the drum body 31.
  • the front support unit 157 may be formed in the shape of a ring that surrounds the introduction port 151.
  • the first support unit 15 may be fixed to the front surface of the cabinet 1 via a connection unit 153.
  • the connection unit 153 may be formed in the shape of a ring that surrounds the cabinet introduction port 11.
  • the second support unit 17 is provided with a rear support unit 171 for rotatably supporting the open rear surface of the drum body 31.
  • the rear support unit 171 may be formed in the shape of a ring that is inserted into the open rear surface of the drum body 31.
  • the drum 3 having the above structure is rotated by a driving unit 5.
  • the driving unit 5 may include a motor 51 provided in the cabinet 1 and a belt 53 for transmitting the rotary force of the motor to the drum body 31.
  • the hot air supply unit 7 may include a duct 71 provided outside the drum body 31 for guiding the air discharged from the drum body 31 to the drum body 31, a fan 75 provided in the duct 71, and a heat pump 73 for performing heat exchange between the air introduced into the duct 71 and a refrigerant to dehumidify and heat the air.
  • One end of the duct 71 may be connected to a first through-hole 155 formed through a connection part 153 of the first support unit, and the other end of the duct 71 may be connected to a second through-hole 173 formed through the second support unit 17.
  • the fan is a means for circulating the air in the drum body 31 through the duct 71.
  • the fan may include an impeller 751 rotatably provided in the duct 71 and a fan motor 753 fixed to the outside of the duct 71 for rotating the impeller.
  • the heat pump 73 may include a refrigerant pipe 739 defining a circulation channel of the refrigerant, an evaporator 731 disposed in the duct 71 in the state of being fixed to the refrigerant pipe 739, a condenser 733 disposed in the duct 71 in the state of being fixed to the refrigerant pipe 739, a compressor 735 for compressing the refrigerant that has passed through the evaporator 731 and moving the compressed refrigerant to the condenser 733, and an expansion valve 737 for opening or closing the refrigerant pipe 739 (for controlling the flow rate of the refrigerant) to adjust the pressure of the refrigerant discharged from the condenser 733.
  • a refrigerant pipe 739 defining a circulation channel of the refrigerant
  • an evaporator 731 disposed in the duct 71 in the state of being fixed to the refrigerant pipe 739
  • a condenser 733 disposed in the
  • the evaporator 731 absorbs heat from the air introduced into the duct 71 to condense the moisture contained in the air. Consequently, the refrigerant passing through the evaporator 731 is evaporated in the refrigerant pipe 739.
  • the condenser 733 emits heat to the air that has passed through the evaporator in order to heat the air. Consequently, the refrigerant passing through the condenser 733 is condensed in the refrigerant pipe 739. As a result, the air that has passed through the evaporator 731 is cooled, and the air that has passed through the condenser 733 is heated.
  • the temperature sensing unit 9 may be configured to sense the temperature in the drum body 31 or to sense the temperature of the air introduced into the duct 71.
  • FIG. 1 shows an example in which the temperature sensing unit 9 is provided in the duct 71.
  • the laundry treatment apparatus 100 shown in FIG. 1 is configured as an apparatus that performs only drying of laundry.
  • the laundry treatment apparatus according to the present invention may be configured as an apparatus that performs both washing and drying of laundry.
  • a tub (not shown) for storing water may be provided in the cabinet, and the drum 3 may be rotatably provided in the tub.
  • the driving unit may include a stator fixed to the outside of the tub for generating a rotating field, a rotor configured to be rotated by the rotating field, generated by the stator, and a rotary shaft extending through the tub for interconnecting the drum and the rotor.
  • the first support unit 15 and the second support unit 17 may be omitted.
  • the duct 71 may be configured to discharge the air in the tub out of the tub and to resupply the air to the tub.
  • FIG. 2 is a flowchart showing an example of a control method of the laundry treatment apparatus 100 having the above structure.
  • the control method may be performed by a controller of the laundry treatment apparatus 100 for controlling the same.
  • the control method according to the present invention includes a step (S10) of determining whether a sterilization course for removing bacteria that are harmful to humans, such as Pseudomonas aeruginosa or Staphylococcus aureus , has been selected.
  • the cabinet 1 may be provided with a display unit 143 for displaying control commands that can be selected by a user and the state of execution of the control command selected by the user and an input unit 141 for allowing the user to input one of the control commands.
  • the user may select the sterilization course through the input unit 141, and a controller (not shown) may determine whether the sterilization course has been selected based on a control signal received from the input unit 141.
  • a hot air supply step (S20) of supplying heated air to the drum 3 is performed.
  • the hot air supply step (S20) may include a fan operation step (S21) and a heat pump operation step (S23).
  • the fan operation step (S21) is a step of supplying power to the fan motor 753 to rotate the impeller 751 under the control of the controller
  • the heat pump operation step (S23) is a step of circulating the refrigerant through the compressor 735 and the expansion valve under the control of the controller.
  • the fan operation step (S21) and the heat pump operation step (S23) may be sequentially performed in order to prevent a reduction in the efficiency of the heat pump.
  • a drum rotation step (S25) of rotating the drum 3 through the driving unit 5 under the control of the controller may be performed while the hot air supply step (S20) is being performed.
  • the drum rotation step (S25) may be set to rotate the drum in any one of the clockwise direction and the counterclockwise direction or to rotate the drum in alternating directions.
  • a temperature measurement step (S30) of measuring the temperature of the air introduced into the duct 71 from the drum 3 through the temperature sensing unit 9 is performed.
  • a time measurement step (S45) of measuring the amount of time for which the temperature of the air remains equal to or higher than the reference temperature is performed.
  • the controller determines the temperature of the air introduced into the duct 71 based on temperature data received from the temperature sensing unit 9 and compares the temperature data received from the temperature sensing unit 9 with reference temperature data stored in the controller or in a separate storage to determine whether the temperature of the air is equal to or higher than the reference temperature (S40).
  • the temperature measurement step (S30), the temperature comparison step (S40), and the time measurement step (S45) are repeated.
  • a hot air supply completion step (S60) of stopping the operation of the fan and the heat pump is performed.
  • the time measurement step (S45) may be a step of comparing the accumulated value of the amount of time for which the temperature of the air measured by the temperature sensing unit 9 is equal to or higher than the reference temperature with the reference amount of time or a step of comparing the amount of time for which the temperature of the air measured by the temperature sensing unit 9 continuously remains equal to or higher than the reference temperature with the reference amount of time.
  • the amount of time for which the sterilization course is performed may be increased. For this reason, the former step is performed as the time measurement step (S45).
  • the reference temperature may be set to 60 °C to 70 °C, and the reference amount of time may be set to 50 minutes to 60 minutes.
  • the hot air supply completion step (S60) may include a cooling step (S61) of stopping the operation of the heat pump 73 and maintaining the operation of the fan for a predetermined amount of time and a fan operation completion step (S63) of stopping the operation of the fan after the completion of the cooling step (S61).
  • the drum rotation step (S25) may be completed after the completion of the cooling step (S61).
  • control method according to the present invention is capable of performing a sterilization course in a drying machine including a heat pump and of sterilizing laundry stored in a drum within the same amount of time irrespective of the amount of laundry (a laundry amount).
  • the present invention has the effect of providing a control method of a laundry treatment apparatus that is configured such that air heated by a heat pump is supplied in order to perform a sterilization course.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP17206069.1A 2016-12-16 2017-12-08 Appareil de traitement de linge et procédé de commande d'appareil de traitement de linge Active EP3336239B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160172574A KR20180070175A (ko) 2016-12-16 2016-12-16 의류처리장치의 제어방법

Publications (2)

Publication Number Publication Date
EP3336239A1 true EP3336239A1 (fr) 2018-06-20
EP3336239B1 EP3336239B1 (fr) 2019-08-14

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EP17206069.1A Active EP3336239B1 (fr) 2016-12-16 2017-12-08 Appareil de traitement de linge et procédé de commande d'appareil de traitement de linge

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Country Link
US (1) US20180171536A1 (fr)
EP (1) EP3336239B1 (fr)
KR (1) KR20180070175A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021106619A1 (de) * 2021-03-18 2022-09-22 Miele & Cie. Kg Verfahren zum Durchführen eines Hygieneprogramms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120167636A1 (en) * 2009-10-16 2012-07-05 Panasonic Corporation Laundry dryer and washer dryer
WO2016150660A1 (fr) * 2015-03-26 2016-09-29 BSH Hausgeräte GmbH Procédé pour l'exécution d'un programme d'hygiène dans un séchoir pourvu d'une pompe à chaleur et séchoir prévu à cet effet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2540368C (fr) * 2003-09-29 2012-12-11 Self Propelled Research And Development Specialists, Llc Seche-linge a pompe a chaleur
US9417009B2 (en) * 2012-03-06 2016-08-16 Lg Electronics Inc. Controlling method for a washing machine
BR112014003738B1 (pt) * 2012-04-06 2021-05-25 Lg Electronics Inc. métodos para controlar uma máquina de lavar roupas e máquina de lavar roupas
EP2855758A1 (fr) * 2012-06-05 2015-04-08 Arçelik Anonim Sirketi Sèche-linge à pompe à chaleur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120167636A1 (en) * 2009-10-16 2012-07-05 Panasonic Corporation Laundry dryer and washer dryer
WO2016150660A1 (fr) * 2015-03-26 2016-09-29 BSH Hausgeräte GmbH Procédé pour l'exécution d'un programme d'hygiène dans un séchoir pourvu d'une pompe à chaleur et séchoir prévu à cet effet
DE102015205483A1 (de) * 2015-03-26 2016-11-03 BSH Hausgeräte GmbH Verfahren zur Durchführung eines Hygieneprogrammes in einem Trockner mit einer Wärmepumpe und hierzu geeigneter Trockner

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Publication number Publication date
EP3336239B1 (fr) 2019-08-14
US20180171536A1 (en) 2018-06-21
KR20180070175A (ko) 2018-06-26

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