WO2014187494A1 - Sèche-linge à pompe à chaleur et procédé de séchage du linge l'employant - Google Patents

Sèche-linge à pompe à chaleur et procédé de séchage du linge l'employant Download PDF

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Publication number
WO2014187494A1
WO2014187494A1 PCT/EP2013/060646 EP2013060646W WO2014187494A1 WO 2014187494 A1 WO2014187494 A1 WO 2014187494A1 EP 2013060646 W EP2013060646 W EP 2013060646W WO 2014187494 A1 WO2014187494 A1 WO 2014187494A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature
refrigerant
laundry
process air
temperature sensor
Prior art date
Application number
PCT/EP2013/060646
Other languages
English (en)
Inventor
Onder Balioglu
Gokhan SIR
Yusuf Koc
Fatih KASAP
Halil Can OZAYDIN
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to PCT/EP2013/060646 priority Critical patent/WO2014187494A1/fr
Publication of WO2014187494A1 publication Critical patent/WO2014187494A1/fr

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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
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/16—Target humidity for the drying process, e.g. very-dry 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
    • D06F2103/38—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
    • D06F2105/26—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
    • D06F2105/32—Air flow control means
    • 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
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target 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
    • 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
    • D06F58/48—Control of the energy consumption
    • 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
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a heat pump type laundry dryer and a method of drying laundry using the same.
  • a heat pump type laundry dryer typically consists of a closed process air circuit and a refrigerant circuit which are arranged to exchange heat.
  • the process air circuit includes a duct for circulating process air through a laundry drum, by means of a fan.
  • the refrigerant circuit includes an evaporator, a compressor, a condenser, and an expansion valve in serial connection for circulating a refrigerant.
  • the evaporator and the condenser are arranged in heat exchange with the process air in the circulation duct for dehumidifying and subsequently heating the process air.
  • the heat absorbed by the evaporator is partly transferred back to the process air by means of the condenser. Thereby, a drying performance of the dryer is increased.
  • the drying process depends on several factors. For instance, the rate of heat transferred to the clothes and the amount of moisture in the clothes will affect the total duration as well as the overall progress of the drying process.
  • the drying process is generally continued until the clothes achieve a standard level of dryness. During the drying process the humidity of the clothes progressively decreases. If the drying process is terminated too early the clothes may remain wet. If the drying process is terminated too late the clothes may be damaged. In either case, a customer will not be satisfied with the drying result. Therefore, it is important to conduct the drying process in an accurate and reliable way.
  • Humidity sensors generally measure a capacitance or a resistance of a probe exposed to the drying environment.
  • Humidity sensors have several drawbacks such as contamination and aging. Another commonly applied technique is to sense dryness by measuring temperature changes in the process air drying the clothes. Temperature sensors are less vulnerable to the drying environment.
  • US 2009/0064531 A1 discloses a cloth treating apparatus for drying clothes with a heat pump.
  • the cloth treating apparatus includes a cabinet for receiving the clothes and a circulation duct for supplying hot air to the cabinet.
  • the heat pump is provided along the circulation duct.
  • the cloth treating apparatus has a control unit which determines dryness of the clothes based on a temperature of the air drawn into the cabinet and a temperature of the air discharged from the cabinet.
  • the drying process may also be affected by unpredictable factors. Customers do not essentially operate a dryer or a washer/dryer in a way complying with the user-instructions supplied by the manufacturer. There may be instances where the customer additionally puts wet clothes into the drum or takes part of the clothes out of the drum. Hence, a change in drying conditions affects the progress of the drying process and compromises accurate operation of the dryer. Consequently, the dryer may malfunction and/or fail to achieve the target dryness level resulting in over dried or under dried laundry.
  • An objective of the present invention is to provide a heat pump type laundry dryer and a method of drying laundry which overcome the drawbacks of the above mentioned prior art and enable a reliable, accurate and an energy-efficient method of drying and sensing dryness of laundry.
  • the heat pump type laundry dryer of the present invention comprises a first temperature sensor arranged to measure a temperature of the process air to be discharged into the drum, a second temperature sensor arranged to measure a temperature of the process air drawn out of the drum, and at least one additional temperature sensor arranged to measure a temperature of the refrigerant.
  • the control unit of the heat pump type laundry dryer of the present invention is adapted to dry the laundry to a target dryness by operating the process air circuit and the refrigerant circuit on the basis of a predetermined and recorded correlation between the measured temperatures, and any abnormality of the measured temperatures. Thereby, the drying process can be conducted in a reliable and an energy-efficient way and the target dryness of laundry can be sensed accurately.
  • operation of the process air circuit and operation of the refrigerant circuit are halted if a temperature of the refrigerant changes abnormally. Thereby, any abnormal operation of the refrigeration circuit can be avoided at an early stage and the clothes can be protected from damages.
  • the dryness of the laundry is sensed based on a temperature drop across the process air discharged into and drawn out of the drum.
  • sensing dryness of the laundry is initiated when the refrigerant temperature starts strictly decreasing. Thereby, an incorrect sensing of the dryness, in particular an under drying of the clothes are avoided.
  • sensing dryness of the laundry is alternatively initiated when said temperature drop across the process air discharged into and drawn out of the drum starts strictly decreasing.
  • the user can specify a target dryness for the laundry by selecting out of a plurality of target dryness levels. Thereby, customer satisfaction can be improved.
  • each of the plurality of target dryness levels selectable by the user is respectively defined by one of a plurality of cascaded temperature ranges which are graded between damp dry to extra dry.
  • the temperature of the refrigerant is measured with a sensor arranged between an upstream side of the condenser and a downstream side of the compressor.
  • the refrigerant temperature is highest prior to entering the condenser.
  • Figure 1 - is a schematic view of a heat pump type laundry dryer according to a preferred embodiment of the present invention.
  • the solid arrows respectively show a circulation direction of the process air and the refrigerant;
  • Figure 2 - is a graphic showing both a temperature of the refrigerant and a temperature drop across the process air entering and exiting a laundry drum during a drying process according to a preferred embodiment of the present invention
  • Figure 3 - is a flowchart showing the steps of a method of drying laundry according to a preferred embodiment of the present invention.
  • the heat pump type laundry dryer (1) comprises a drum (2) for receiving laundry, a process air circuit (3) including a duct (4) arranged to discharge process air into the drum (2) and to draw process air out of the drum (2), and a fan (5) arranged to circulate the process air in the duct (4) through the drum (2), a refrigerant circuit (6) including an evaporator (7), a compressor (8), a condenser (9), and an expansion valve (10) connected in series to circulate a refrigerant, wherein the evaporator (7) is arranged to dehumidify the process air in the duct (4), and the condenser (9) is arranged to heat the dehumidified process air in the duct (4), a first temperature sensor (11) arranged to measure a temperature (T1) of the process air to be discharged into the drum (2) and a second temperature sensor (12) arranged to measure a temperature (T2) of the process air drawn out of the drum (2).
  • a process air circuit (3) including a duct
  • the heat pump type laundry dryer (1) further comprises at least one additional temperature sensor (13), located at the refrigerant circuit (6), arranged to measure a temperature of the refrigerant (T3) and a control unit (14) adapted to dry the laundry to a target dryness by operating the process air circuit (3) and the refrigerant circuit (6) on the basis of the predetermined correlation between the temperatures (T1, T2, T3) and any abnormality of the temperatures (T1, T2, T3) respectively measured by the first temperature sensor (11), the second temperature sensor (12) and the additional temperature sensor (13).
  • the additional temperature sensor (13) is preferably arranged so as to specifically measure the temperature of the refrigerant between an upstream side of the condenser (9) and a downstream side of the compressor (8). More than one additional temperature sensor (13) can be used.
  • At least one additional temperature sensor (13) can be alternatively located at the downstream side of the condenser (9) and/or at the downstream side of the expansion valve (10) and/or at the downstream side of the evaporator (7).
  • the control unit (14) is preferably further adapted to keep track of changes in the refrigerant temperature (T3), and to halt the operation of the process air circuit (3) by stopping the fan (5) and to halt the operation of the refrigerant circuit (6) by stopping the compressor (8) if the refrigerant temperature (T3) changes abnormally.
  • Figure 2 shows how the temperature of the refrigerant changes during the drying process.
  • the refrigerant temperature may abruptly change in case of malfunctioning as exemplified in Figure 2.
  • an abnormal change in the refrigerant temperature may also be conceived as a deviation beyond the maximal and minimal operation ranges set for a standard operation of the refrigeration circuit (6). These ranges are stored in a memory (not shown) provided in the heat pump type laundry dryer (1) and can be retrieved by the control unit (14).
  • the numerical values in Figure 2 are only exemplary and may vary depending on the ambient temperature and specific design parameters of the heat pump type laundry dryer (1) of the present invention.
  • the control unit (14) is preferably further adapted to initiate, when the refrigerant temperature (T3) starts strictly decreasing, sensing dryness of the laundry based on a temperature drop ( ⁇ T) across the first temperature sensor (11) and the second temperature sensor (12).
  • control unit (14) is preferably further adapted to keep track of changes in a temperature drop ( ⁇ T) across the first temperature sensor (11) and the second temperature sensor (12), and to initiate, when said temperature drop ( ⁇ T) starts strictly decreasing, sensing dryness of the laundry based on said temperature drop ( ⁇ T).
  • the control unit (14) is preferably further adapted to judge that the laundry has reached the target dryness when said temperature drop ( ⁇ T) across the first temperature sensor (11) and the second temperature sensor (12) falls within a predetermined temperature range defining the target dryness and to halt operation of the process air circuit (3) and operation of the refrigerant circuit (6) if the judgment is affirmative.
  • the heat pump type laundry dryer (1) further comprises an input means (15) allowing a user to specify a target dryness of the laundry by selecting out of a plurality of target dryness levels.
  • the control unit (14) is adapted to judge that the laundry has reached the selected target dryness when the temperature drop ( ⁇ T) across the first temperature sensor (11) and the second temperature sensor (12) falls within a corresponding predetermined temperature range defining the target dryness specified by the user.
  • the predetermined temperature ranges are stored in a memory (not shown) provided in the heat pump type laundry dryer (1) and can be retrieved by the control unit (14).
  • each of the plurality of target dryness levels is respectively defined by one of a plurality of cascaded temperature ranges which are graded between damp dry to extra dry.
  • the heat pump type laundry dryer (1) has preferably three dryness levels including a damp dry level, a dry level and an extra dry level. These dryness levels occupy the far right hand side of the temperature drop ( ⁇ T) curve shown in Figure 2.
  • step 101 the user may select a target dryness level out of a plurality of target dryness levels using the input means (15) shown in Figure 1.
  • the control unit (14) starts to circulate process air in the duct (4) through the drum (2) and to circulate the refrigerant through the evaporator (7) and the condenser (8) in order to dry the laundry to the selected target dryness level.
  • steps 102a to 102c a temperature (T1) of the process air to be discharged into the drum (2), a temperature (T2) of the process air drawn out of the drum (2), and a temperature of the refrigerant (T3) are simultaneously measured. These measurements are repeatedly performed until the selected target dryness level is reached.
  • step 102e the control unit (14) calculates the changes in the refrigerant temperature (T3).
  • step 103 the control unit (14) determines whether the refrigerant temperature (T3) changes abnormally on the basis of the calculation.
  • step 112 the control unit (14) halts the circulation of the process air and the refrigerant if it is determined that the refrigerant temperature (T3) changes abnormally. The drying process may be resumed. This abnormality determination is repeatedly performed until the selected target dryness level is reached.
  • step 102d the control unit (14) calculates the temperature drop ( ⁇ T) across the process air entering and exiting the drum (2).
  • step 104a the control unit (14) determines whether the refrigerant temperature (T3) has started to strictly decrease on the basis of the changes in refrigerant temperature (T3).
  • step 105 the control unit (14) initiates, if it is determined that the refrigerant temperature has started strictly decreasing, to sense dryness of the laundry based on said temperature drop ( ⁇ T).
  • step 102f the control unit (14) calculates changes in said temperature drop ( ⁇ T).
  • step 104b the control unit (14) determines whether said temperature drop ( ⁇ T) has started to strictly decrease.
  • step 105 the control unit (14) initiates sensing dryness if it is determined that said temperature drop ( ⁇ T) has started strictly decreasing. The dryness is sensed based on said temperature drop ( ⁇ T).
  • the control unit (14) acquires a target dryness level selected by the user.
  • the control unit (14) judges that the laundry has reached a selected target dryness when a temperature drop ( ⁇ T) of the process air entering and exiting the drum (2), falls within a corresponding predetermined temperature range defining the target dryness specified by the user in step 101. If the judgment is negative, the drying process is continued until the temperature drop ( ⁇ T) falls into the predetermined temperature range corresponding to the selected target dryness.
  • the predetermined temperature ranges are preferably defined by four threshold values Th1 to Th4.
  • the predetermined temperature ranges are cascaded and respectively correspond to “damp dry”, “dry” and “extra dry”.

Abstract

La présente invention concerne un sèche-linge à pompe à chaleur (1) et un procédé de séchage du linge employant un tel sèche-linge. Le sèche-linge à pompe à chaleur comprend un circuit d'air de traitement (3) comportant un conduit (4) servant à faire circuler l'air de traitement à travers un tambour à linge (2), un circuit d'agent frigorigène (6) comportant un évaporateur (7), un compresseur (8), un condenseur (9) et un détendeur (10) raccordés en série et servant à faire circuler un agent frigorigène, l'évaporateur (7) et le condenseur (8) étant conçus de manière à pouvoir effectuer un échange thermique avec l'air de traitement se trouvant dans le conduit (4) afin de le déshumidifier puis de le chauffer, un premier capteur de température (11) conçu pour mesurer une température (T1) de l'air de traitement destiné à être introduit dans un tambour (2) et un deuxième capteur de température (12) conçu pour mesurer une température (T2) de l'air de traitement évacué du tambour (2). Le sèche-linge à pompe à chaleur est en outre doté d'au moins un capteur de température supplémentaire (13), placé au niveau du circuit d'agent frigorigène (6), conçu pour mesurer la température de l'agent frigorigène (T3) et d'une unité de commande (14) conçue pour sécher le linge jusqu'à l'obtention d'une sécheresse cible en faisant fonctionner le circuit d'air de traitement (3) et le circuit d'agent frigorigène (6) en fonction de la corrélation prédéterminée entre les températures (T1, T2, T3) et de toute anomalie au niveau des températures (T1, T2, T3) mesurée par le premier capteur de température (11), le deuxième capteur de température (12) et le capteur de température supplémentaire (13).
PCT/EP2013/060646 2013-05-23 2013-05-23 Sèche-linge à pompe à chaleur et procédé de séchage du linge l'employant WO2014187494A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/EP2013/060646 WO2014187494A1 (fr) 2013-05-23 2013-05-23 Sèche-linge à pompe à chaleur et procédé de séchage du linge l'employant

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Application Number Priority Date Filing Date Title
PCT/EP2013/060646 WO2014187494A1 (fr) 2013-05-23 2013-05-23 Sèche-linge à pompe à chaleur et procédé de séchage du linge l'employant

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140109435A1 (en) * 2012-10-22 2014-04-24 Hyuksoo Lee Laundry treating apparatus having expansion valve which is variable according to the driving mode
US11421375B2 (en) * 2020-02-24 2022-08-23 Haier Us Appliance Solutions, Inc. Detecting degree of dryness in a heat pump laundry appliance
EP4180562A4 (fr) * 2020-09-09 2023-11-29 Samsung Electronics Co., Ltd. Sèche-linge et son procédé de commande

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397101A (en) * 1981-09-10 1983-08-09 General Electric Company Automatic dryer control
EP0106646A2 (fr) * 1982-10-11 1984-04-25 FISHER & PAYKEL LIMITED Séchoirs à linge
DE102005041145A1 (de) * 2005-08-29 2007-03-01 Alpha-Innotec Gmbh Wäschetrockner
US20090064531A1 (en) 2007-08-03 2009-03-12 Lg Electronics Inc. Cloth treating apparatus
US20090248206A1 (en) * 2008-04-01 2009-10-01 Yoo Hea Kyung Control method of laundry treating machine
US20100263226A1 (en) * 2007-12-20 2010-10-21 BSH Bosch und Siemens Hausgeräte GmbH Washing/drying device comprising a moisture determining device and method for operating a washing/drying device
EP2284310A1 (fr) * 2009-08-12 2011-02-16 Electrolux Home Products Corporation N.V. Sèche-linge à tambour avec pompe à chaleur et procédé pour faire fonctionner une pompe à chaleur pour un sèche-linge
WO2012134148A2 (fr) * 2011-03-29 2012-10-04 Lg Electronics Inc. Procédé de commande destiné à un sèche-linge
DE102011079449A1 (de) * 2011-07-20 2013-01-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines Wärmepumpentrockners

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397101A (en) * 1981-09-10 1983-08-09 General Electric Company Automatic dryer control
EP0106646A2 (fr) * 1982-10-11 1984-04-25 FISHER & PAYKEL LIMITED Séchoirs à linge
DE102005041145A1 (de) * 2005-08-29 2007-03-01 Alpha-Innotec Gmbh Wäschetrockner
US20090064531A1 (en) 2007-08-03 2009-03-12 Lg Electronics Inc. Cloth treating apparatus
US20100263226A1 (en) * 2007-12-20 2010-10-21 BSH Bosch und Siemens Hausgeräte GmbH Washing/drying device comprising a moisture determining device and method for operating a washing/drying device
US20090248206A1 (en) * 2008-04-01 2009-10-01 Yoo Hea Kyung Control method of laundry treating machine
EP2284310A1 (fr) * 2009-08-12 2011-02-16 Electrolux Home Products Corporation N.V. Sèche-linge à tambour avec pompe à chaleur et procédé pour faire fonctionner une pompe à chaleur pour un sèche-linge
WO2012134148A2 (fr) * 2011-03-29 2012-10-04 Lg Electronics Inc. Procédé de commande destiné à un sèche-linge
DE102011079449A1 (de) * 2011-07-20 2013-01-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines Wärmepumpentrockners

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140109435A1 (en) * 2012-10-22 2014-04-24 Hyuksoo Lee Laundry treating apparatus having expansion valve which is variable according to the driving mode
US9146056B2 (en) * 2012-10-22 2015-09-29 Lg Electronics Inc. Laundry treating apparatus having expansion valve which is variable according to the driving mode
US11421375B2 (en) * 2020-02-24 2022-08-23 Haier Us Appliance Solutions, Inc. Detecting degree of dryness in a heat pump laundry appliance
EP4180562A4 (fr) * 2020-09-09 2023-11-29 Samsung Electronics Co., Ltd. Sèche-linge et son procédé de commande

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