WO2020076258A2 - Lessiveuse-sécheuse - Google Patents

Lessiveuse-sécheuse Download PDF

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Publication number
WO2020076258A2
WO2020076258A2 PCT/TR2019/050355 TR2019050355W WO2020076258A2 WO 2020076258 A2 WO2020076258 A2 WO 2020076258A2 TR 2019050355 W TR2019050355 W TR 2019050355W WO 2020076258 A2 WO2020076258 A2 WO 2020076258A2
Authority
WO
WIPO (PCT)
Prior art keywords
laundry
load
drying step
control unit
dryer
Prior art date
Application number
PCT/TR2019/050355
Other languages
English (en)
Other versions
WO2020076258A3 (fr
Inventor
Erdem POSTOGLU
Ahmet Burak TOP
Taylan CULCULOGLU
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
Publication of WO2020076258A2 publication Critical patent/WO2020076258A2/fr
Publication of WO2020076258A3 publication Critical patent/WO2020076258A3/fr

Links

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
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • 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
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or 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
    • D06F2103/02—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
    • D06F2103/28—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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
    • D06F33/52—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/68—Control of the operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of the sequence of washing and drying operations

Definitions

  • the present invention relates to a washer-dryer wherein the load is detected in the drying process after the washing process.
  • the air heated and passed over the laundry gets humid and then is condenser in the condenser.
  • the air which is dehumidified and thus dried is heated and then delivered back onto the laundry through the process air duct.
  • the drying program is performed in three steps which are the first phase drying step, the second phase drying step and the aeration step.
  • the heater heating the process air and the fan circulating the process air are generally operated continuously and thus the air in the drum is heated.
  • the heated air gets in contact with the laundry and then is passed through the condenser to be dehumidified.
  • the dehumidified air is passed over the heater to be heated and delivered back into the drum.
  • the temperature of the process air increases.
  • the first step ends when the process air temperature detected by the temperature sensor, for example an NTC thermistor, reaches a certain value.
  • the heater and the fan are operated; however, the heater can be intermittently (turn on/tum off) operated under the control of a second temperature sensor.
  • the process air temperature is kept constant and the drying process continues in the steady state.
  • the heater is turned off and the fan is operated, thus the laundry is aerated to decrease the temperature thereof suitable for the contact of the user.
  • different drying programs are performed for different amounts of laundry (load) and since load detection is not part of the drying program, it becomes difficult to provide savings in time and energy. For energy efficiency and for drying different loads of same type of laundry with a single drying program, the amount of load must be detected and the program must automatically make relevant changes.
  • the process air temperature is measured by means of a temperature sensor, for example an NTC thermistor.
  • a timer the time required for the process air to reach a predetermined limit temperature is measured.
  • the control unit calculates the rate of increase in the process air temperature according to the data received from the temperature sensor and the timer and calculates the amount of laundry depending on the rate of increase in temperature. If the time to reach the limit temperature is low, meaning if the temperature rapidly increases, it is understood that the laundry load is lower than a threshold value. Similarly, if the time to reach the limit temperature is high, meaning if the temperature slowly increases, it is understood that the laundry load is higher than a threshold value.
  • the control unit regulates the following steps of the drying program according to the load, for example if the load is lower than the threshold value, the drying time is shortened, thus decreasing the energy consumption.
  • Figure 1 - is the schematic view of a laundry washer-dryer.
  • Figure 2 - is the graphic showing the change in power drawn by the heater with respect to time in the drying program where the heater is operated in the turn on/turn off mode in the second phase drying step.
  • Figure 3 - is the graphic showing the change in power drawn by the heater with respect to time in the drying program where the heater is operated in continuous mode in the second phase drying step.
  • the laundry washer-dryer (1) comprises a drum (2) wherein the laundry is washed and dried; a tub (3) wherein the drum (2) moves; a circulation duct (4) wherein the process air circulation, providing the drying of the laundry, is performed after the washing process; a heater (5) which is disposed into the air duct (4) and which provides the heating of the process air; a fan (6) which provides circulation of the process air in the circulation duct (4); a preferably water-cooled or air-cooled condenser (7) which is connected to the circulation duct (4) and wherein the process air (PA) passing therethrough is condensed; a condenser inlet (8) which is provided at the part of air duct (4) connected to the tub (3) and which allows the passage of the process air from the drum (3) to the condenser (7), and a control unit (9) which performs the drying process by carrying out, after the washing process and from the beginning of the drying step with the process air, the first phase drying step (I) wherein the heater (5) is operated and the load
  • the laundry washer-dryer (1) of the present invention comprises
  • a temperature sensor (10) for example an NTC (Negative Temperature Coefficient) thermistor which is disposed at the condenser inlet (8) of the air duct (4) and which detects the temperature of the process air dehumidifying the laundry and entering the condenser (7) to be condensed, and
  • NTC Negative Temperature Coefficient
  • timer (11) which measures the time (T-dlciilcn: measured time) required for the process air to reach a predetermined limit temperature in the first phase drying step (I).
  • the control unit (9) calculates the rate of increase in the process air temperature according to the data received from the temperature sensor (10) and the timer (11) and calculates the amount of laundry (laundry load) depending on the rate of increase in temperature.
  • the control unit (9) decides that the rate of increase in the process air temperature is high and the laundry load is low with respect to the predetermined threshold loads if the time measured (T-dlciilcn) to reach the limit temperature in the first phase drying step (I) is low with respect to the predetermined threshold time values.
  • the control unit (9) decides that the rate of increase in the process air temperature is low and the laundry load is high with respect to the predetermined threshold loads if the time measured (T-dlciilcn) to reach the limit temperature in the first phase drying step (I) is high with respect to the predetermined threshold time values.
  • the control unit (9) decides that the laundry load is low if the measured time (T- dlciilcn) is low and that the laundry load is high if the measured time (T-dlcservern) is high.
  • the control unit (9) determines the temperature and time values of the second phase drying step (II) according to said load. If the laundry load in the first phase drying step (I) is lower than the predetermined threshold values, the cut-in times of the heater (5) and the total drying program time in the second phase drying step (II) are decreased. If the laundry load in the first phase drying step (I) is higher than the predetermined threshold values, the cut-in times of the heater (5) and the total drying program time in the second phase drying step (II) are increased.
  • the preheating and the thermal spin-drying steps are performed and the laundry is prepared for the drying process. These steps are carried out in the same time period for all the declared laundry loads.
  • the laundry load is determined by the control unit (9) in the first phase drying step (I) and the second phase drying step (II) is performed according to the load.
  • the first phase drying step (I) if the laundry load is low the process air temperature increases more quickly and if the laundry load is high the process air temperature increases slowly due to the dense humidity.
  • the control unit (9) decides that the laundry load is low if the process air temperature increases "quickly" and that the laundry load is high if the process air temperature increases "slowly”. Upon determining the laundry load, the control unit (9) determines again the temperature and time values of the second phase drying step (II) according to said laundry load detected.
  • control unit (9) compares the time measured (T-dlciilcn) in the first phase drying step (I), hence the rate of increase in the process air, with the lower and higher threshold time values (T-alt e ⁇ ik, T-iist e ⁇ ik) for different laundry loads and determines the laundry load amount as "quarter load”, "half load” and "full load”.
  • the control unit (9) determines the laundry load as "quarter load” if the measured time of the first phase drying step (I) is lower than the lower threshold time value (T-dlciilcn ⁇ T- alt e ⁇ ik). The control unit (9) determines the laundry load as "half load” if the measured time of the first phase drying step (I) is between the lower threshold time value and the higher threshold time value (T-alt e ⁇ ik ⁇ T-dlciilcn ⁇ T-iist e ⁇ ik).
  • the control unit (9) determines the laundry load as "full load” if the measured time of the first phase drying step (I) is higher than the higher threshold time value (T-dlciilcn > T- iist e ⁇ ik).
  • the laundry washer-dryer (1) comprises a voltmeter (12) measuring the mains voltage and the control unit (9) calculates the laundry load according the data received from the voltmeter (12), that is according to the fluctuations in the mains voltage.
  • control unit (9) carries out the second phase drying step (II) according to the laundry load determined by the temperature sensor (10) and the timer (11).
  • the control unit (9) decides that the laundry load is "lower” than the laundry load determined by the temperature sensor (10) and the timer (11). If the mains voltage is lower than the normal value, the heater (5) heats up late, the measure time (T-dlciilcn) increases and the laundry load determined by the temperature sensor (10) and the timer (11) is calculated “erroneously as high”. The control unit (9) revises the laundry load as "lower” according to the lower voltage data received from the voltmeter (12).
  • the control unit (9) decides that the laundry load is "higher” than the laundry load determined by the temperature sensor (10) and the timer (11). If the mains voltage is higher than the normal value, the heater (5) heats up quicker, the measure time (T-dlcservern) decreases and the laundry load determined by the temperature sensor (10) and the timer (11) is calculated “erroneously as low”. The control unit (9) revises the laundry load as "higher” according to the higher voltage data received from the voltmeter (12).
  • the drying process is performed in a manner suitable to the laundry load thanks to the detection of the load. Consequently, the drying time and the energy consumption are decreased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

La présente invention concerne une lessiveuse-sécheuse (1) comprenant un tambour (2) dans lequel le linge est lavé et séché ; une cuve (3) dans laquelle le tambour (2) se déplace ; un conduit de circulation (4) ; un dispositif de chauffage (5) qui est disposé dans le conduit d'air (4) et qui fournit le chauffage de l'air de traitement ; un ventilateur (6) ; un condenseur (7) ; une entrée de condenseur (8) qui permet le passage de l'air de traitement du tambour (3) au condenseur (7), où le processus de séchage est effectué par la mise en œuvre de la première étape de séchage de phase (I), de la deuxième étape de séchage de phase (II) et de l'étape d'aération (III).
PCT/TR2019/050355 2018-10-10 2019-05-21 Lessiveuse-sécheuse WO2020076258A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201814919 2018-10-10
TR2018/14919 2018-10-10

Publications (2)

Publication Number Publication Date
WO2020076258A2 true WO2020076258A2 (fr) 2020-04-16
WO2020076258A3 WO2020076258A3 (fr) 2020-05-28

Family

ID=70165328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2019/050355 WO2020076258A2 (fr) 2018-10-10 2019-05-21 Lessiveuse-sécheuse

Country Status (1)

Country Link
WO (1) WO2020076258A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940006250B1 (ko) * 1991-12-23 1994-07-13 주식회사 금성사 복합 센서 방식 의류 건조기의 제어방법 및 그 회로
KR20060033065A (ko) * 2004-10-14 2006-04-19 엘지전자 주식회사 응축식 건조기 및 그 제어방법
KR100651902B1 (ko) * 2005-12-06 2006-12-04 엘지전자 주식회사 자동 건조 장치의 제어 방법
KR20120065628A (ko) * 2010-12-13 2012-06-21 삼성전자주식회사 건조기
EP2537975B1 (fr) * 2011-06-22 2020-08-05 Electrolux Home Products Corporation N.V. Procédé de contrôle d'un sèche-linge à tambour rotatif et sèche-linge à tambour rotatif implémentant le procédé

Also Published As

Publication number Publication date
WO2020076258A3 (fr) 2020-05-28

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