EP3741909B1 - Steuerungsverfahren für trocknungsmaschinen - Google Patents

Steuerungsverfahren für trocknungsmaschinen Download PDF

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Publication number
EP3741909B1
EP3741909B1 EP20175633.5A EP20175633A EP3741909B1 EP 3741909 B1 EP3741909 B1 EP 3741909B1 EP 20175633 A EP20175633 A EP 20175633A EP 3741909 B1 EP3741909 B1 EP 3741909B1
Authority
EP
European Patent Office
Prior art keywords
measurement unit
temperature
heater
threshold value
motor
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
EP20175633.5A
Other languages
English (en)
French (fr)
Other versions
EP3741909A1 (de
Inventor
Elif Gul GOCER
Tugba CICEK
Asli CERIT ADSAY
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret AS
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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP3741909A1 publication Critical patent/EP3741909A1/de
Application granted granted Critical
Publication of EP3741909B1 publication Critical patent/EP3741909B1/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
    • 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
    • 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
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D06F2105/60—Audible signals
    • 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 
    • D06F58/22—Lint collecting 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment

Definitions

  • the present invention relates to a control method for drying machines to distinguish problems causing temperature increase in the machine and inform the user properly so that the necessary precautions are taken.
  • a fluff filter also known as a door filter or a fibre filter.
  • the fluff filter should be cleaned by the user after each drying process.
  • a filter known as a condenser where the fibres escaping from the fluff filter are collected. Clogging of the filters cause reduction in performance of the machine, increase in the energy consumption and a prolonged drying period. Furthermore, clogging of the filters may cause the drying machine to heat suddenly and excessively, which may damage the machine in the long term, pose a risk of fire, damage the laundry inside the drum and/or cause the user to experience sudden temperature when she/he opens the door.
  • Patent document no. US2008072450A1 discloses a clogging detection system for drier. According to this document, in order to determine the clogging in an air passage, temperature values of the heater and air passage are used. However, system disclosed in this document cannot distinguish the situations when there is problem with fan motor and when the clogging occurs.
  • EP3299512A1 a control method for laundry drying machine and a laundry drying machine. According to this document, in order to determine plugging of a lint filter, a difference between the compressor outlet temperature and the drum outlet temperature is used. Although one reason for said temperature difference is plugging of the lint filter, it is not the only reason. Therefore, method of this document cannot determine the filter plugging correctly.
  • An object of the present invention is to provide a control method to detect and distinguish problems occurring in the drying machines and causing temperature increase.
  • Another object of the present invention is to provide a control method to inform the user about the problem occurred so that the necessary precautions are taken.
  • a further object of the present invention is to provide a reliable control method.
  • a filter also known as fluff filter and condenser. Clogging of these filters cause reduction in performance of the machine, increase in the energy consumption and a prolonged drying period. Furthermore, clogging of the filters may cause the drying machine to heat suddenly and excessively, which may damage the machine in the long term, pose a risk of fire, damage the laundry inside the drum and/or cause the user to experience sudden temperature when she/he opens the door. Apart from clogging of said filters, reasons as malfunctioning of a motor of the machine may cause a temperature increase; and failing to respond the specified problem at the right time may result in machine damage. Accordingly, with the present invention, there is provided a control method to inform the user about the problem occurred so that the necessary precautions are taken, in case an unexpected temperature increase occurs.
  • the control method according to the invention is for use in a drying machine as defined in claim 1.
  • the user initiates a drying program via e.g. a control panel of the drying machine by choosing one of the stored drying programs and determining the parameters regarding the drying process.
  • the drying program may comprise a drying phase during which the drying process is performed and a cooling phase during which a temperature of the machine and the laundry is decreased after completion of the drying process, wherein after completion of the drying phase and the cooling phase, a finishing mode is adopted during which the motor and the heater are turned off/stopped.
  • the drying phase is initiated as well, and the motor and the heater are activated.
  • the first measurement unit measures a temperature of the heater in a first period which may be e.g.
  • the control unit compares the temperature value measured by the first measurement unit with a first threshold value, and repeats this process as long as the temperature value is below the first threshold value. If the control unit detects that temperature value measured by the first measurement unit is equal to or above the first threshold value, it allows the heater to be turned off and compares the temperature value measured by the first measurement unit with the first threshold value after a first time period. If the control unit detects that temperature value measured by the first measurement unit is below the first threshold value following said comparison, it compares periodically the temperature values measured by the first measurement unit with a second threshold value, thereby controlling whether a temperature of the heater decreases below the second threshold value.
  • the drying program (the drying phase) is continued such that the heater is turned off and the motor is in operation; and when it is detected that the temperature of the heater has decreased below the second threshold value, the heater is re-activated and the program is resumed on. If it is detected that the temperature values measured by the first measurement unit are equal to or above the first threshold value, the control unit detects whether the temperature values measured by the second measurement unit have decreased or not. Said detection process can be performed by the control unit by comparing the temperature values measured by the second measurement unit with each other. For example, the control unit is able to receive temperature values measured by the second measurement unit and compare them with a previous temperature value periodically.
  • control unit may comprise a memory unit so that a received measurement value can be compared with a previous temperature value that is stored at the memory unit.
  • the control unit may comprise a memory unit so that a received measurement value can be compared with a previous temperature value that is stored at the memory unit.
  • the control unit turns off the heater and a cooling phase is carried out.
  • the warning unit provides a filter clogged warning when the program is completed.
  • temperature of the motor and the heater is monitored, and a reason for a temperature increase occurred in the machine is determined by evaluating a change in the temperature values. Therefore, the user can be informed that the generated temperature is due to a motor failure or the filter being clogged, and thus, the user cleans the filter or calls a technical service in case of a motor error to eliminate the error.

Landscapes

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

Claims (2)

  1. Steuerungsverfahren für eine Trocknungsmaschine, die wenigstens eine Trommel zur Aufnahme von zu trocknenden Gegenständen, wenigstens einen Motor, um zu ermöglichen, dass die Trommel eine Rotationsbewegung ausführt, wenigstens eine Heizung zum Erhöhen einer Temperatur innerhalb der Trommel, so dass ein Trocknungsprozess ausgeführt wird, wenigstens eine erste Messeinheit, die in Verbindung mit der Heizung steht und die Temperatur der Heizung misst, wenigstens eine zweite Messeinheit, die in Verbindung mit dem Motor steht und die Temperatur des Motors misst, wenigstens einen Filter, in dem Federn und Fasern gesammelt werden, die sich von der Wäsche gelöst haben und während des Trocknungsprozesses mit der Luft gemischt worden sind, wenigstens eine Warneinheit, um dem Benutzer eine visuelle und/oder akustische Warnung zu geben, und wenigstens eine Steuereinheit aufweist, die in Verbindung mit dem Motor, der Heizung, der ersten Messeinheit, der zweiten Messeinheit und der Warneinheit steht,
    dadurch gekennzeichnet, dass es die Schritte aufweist:
    - Starten eines Trocknungsprogramms durch den Benutzer,
    - Aktivieren des Motors und der Heizung auf das Starten des Trocknungsprogramms hin,
    - periodisches Messen der Temperaturen durch die erste Messeinheit und durch die zweite Messeinheit durchgehend über das Trocknungsprogramm,
    - Vergleichen, durch die Steuereinheit, der durch die ersten Messeinheit gemessenen Temperatur mit einem ersten Schwellenwert;
    - wenn der von der ersten Messeinheit gemessene Temperaturwert unterhalb des ersten Schwellenwertes liegt, Zurückkehren zu dem Schritt des Vergleichens des von der ersten Messeinheit gemessenen Temperaturwertes mit dem ersten Schwellenwert,
    - wenn der von der ersten Messeinheit gemessene Temperaturwert gleich oder größer als der erste Schwellenwert ist, Abschalten der Heizung durch die Steuereinheit,
    - am Ende einer ersten Zeitperiode, nachdem die Heizung abgeschaltet ist, Vergleichen, durch die Steuereinheit, des von der ersten Messeinheit gemessenen Temperaturwertes mit dem ersten Schwellenwert,
    o wenn der von der ersten Messeinheit gemessene Temperaturwert unterhalb des ersten Schwellenwertes ist, Vergleichen, durch die Steuereinheit, des von der ersten Messeinheit gemessenen Temperaturwertes mit einem zweiten Schwellenwert in einer dritten Periode,
    □ Fortsetzen des Programms, so dass die Heizung abgeschaltet ist und der Motor in Betrieb ist, bis erfasst wird, dass der von der ersten Messeinheit gemessene Temperaturwert auf unter den zweiten Schwellenwert gefallen ist,
    □ wenn erfasst wird, dass der von der ersten Messeinheit gemessene Temperaturwert unter den zweiten Schwellenwert gefallen ist, Reaktivieren der Heizung und Zurückkehren zu dem Schritt "periodisches Messen der Temperaturen durch die erste Messeinheit und durch die zweite Messeinheit" und Fortfahren mit dem Programm,
    o wenn der von der ersten Messeinheit gemessene Temperaturwert gleich oder größer als der erste Schwellenwert ist, Feststellen durch die Steuereinheit, ob die von der zweiten Messeinheit gemessenen Temperaturwerte gefallen sind oder nicht, wobei das Fallen der von der zweiten Messeinheit gemessenen Temperaturwerte durch Vergleichen der von der zweiten Messeinheit gemessenen Temperaturwerte mit früheren Temperaturwerten periodisch erfasst wird,
    □ wenn die von der zweiten Messeinheit gemessenen Temperaturwerte fallen, Übergehen zu einem Abschlussmodus, währenddessen der Motor und die Heizung abgeschaltet/gestoppt werden, und Ausgeben einer Motorfehlerwarnung durch die Warneinheit,
    □ wenn die von der zweiten Messeinheit gemessenen Temperaturwerte nicht fallen, Zurückkehren zu dem Schritt "Fortsetzen des Programms, so dass die Heizung abgeschaltet ist und der Motor in Betrieb ist, bis der von der ersten Messeinheit gemessene Temperaturwert unter den zweiten Schwellenwert fällt".
  2. Steuerungsverfahren nach Anspruch 1, dadurch gekennzeichnet, dass es die Schritte aufweist: Wenn der von der ersten Messeinheit aufgenommene Temperaturwert um einen Bezugswert über den ersten Schwellenwert ansteigt, die Steuereinheit mit einer Kühlphase fortfährt und die Warneinheit eine Filterverstopfungswarnung ausgibt, wenn das Programm abgeschlossen ist.
EP20175633.5A 2019-05-23 2020-05-20 Steuerungsverfahren für trocknungsmaschinen Active EP3741909B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2019/07847A TR201907847A2 (tr) 2019-05-23 2019-05-23 Kurutma makineleri için bir kontrol yöntemi.

Publications (2)

Publication Number Publication Date
EP3741909A1 EP3741909A1 (de) 2020-11-25
EP3741909B1 true EP3741909B1 (de) 2022-03-02

Family

ID=70921773

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Application Number Title Priority Date Filing Date
EP20175633.5A Active EP3741909B1 (de) 2019-05-23 2020-05-20 Steuerungsverfahren für trocknungsmaschinen

Country Status (2)

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EP (1) EP3741909B1 (de)
TR (1) TR201907847A2 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6150599A (ja) 1984-08-18 1986-03-12 松下電器産業株式会社 乾燥機の制御装置
CA2599375C (en) * 2006-09-06 2011-06-21 Lg Electronics Inc. Clogging detecting system for dryer
CA2610133C (en) * 2006-12-26 2010-09-21 Yang-Hwan Kim Dryer with clogging detecting function
KR102658780B1 (ko) * 2016-09-21 2024-04-19 엘지전자 주식회사 건조기의 제어 방법

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Publication number Publication date
EP3741909A1 (de) 2020-11-25
TR201907847A2 (tr) 2020-12-21

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