EP2162580B1 - Machine à laver séchante - Google Patents

Machine à laver séchante Download PDF

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Publication number
EP2162580B1
EP2162580B1 EP08760478A EP08760478A EP2162580B1 EP 2162580 B1 EP2162580 B1 EP 2162580B1 EP 08760478 A EP08760478 A EP 08760478A EP 08760478 A EP08760478 A EP 08760478A EP 2162580 B1 EP2162580 B1 EP 2162580B1
Authority
EP
European Patent Office
Prior art keywords
triac
voltage
door lock
relay
washer
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
EP08760478A
Other languages
German (de)
English (en)
Other versions
EP2162580A2 (fr
Inventor
Hakan Ozkahraman
Namik Yilmaz
Bulent Efecik
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP2162580A2 publication Critical patent/EP2162580A2/fr
Application granted granted Critical
Publication of EP2162580B1 publication Critical patent/EP2162580B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the present invention relates to a washer/dryer wherein the drum is not rotated when the door is opened.
  • the doors of washer/dryers are automatically locked during the washing process for the safety of the user.
  • the door is allowed to be opened by the user.
  • various types of door safety circuits are used that permit the door lock to be opened or closed and the operation of the circuits are controlled by an electronic control system.
  • a microprocessor is provided in the electronic control system, and the open -closed status of the door and the operation of the motor rotating the drum are controlled by a software in the microprocessor.
  • a safety circuit that keeps the washing machine door locked while the drum of the washing machine is rotating.
  • the voltage generated in the tacho-generator at the washing or spinning speeds of the washing machine drum is converted to an electric signal whereby the switching device that energizes the door lock is controlled.
  • the aim of the present invention is the realization of a washer/dryer wherein user safety is provided by stopping the rotation of the drum when an error is detected in the circuit energizing the door lock.
  • the washer/dryer comprises a relay that operates, halts or changes the operating direction of the motor that rotates the drum, a door lock that is locked up during washing preventing the opening of the door and allows the door to be opened at the end of the washing process, a triac that energizes the door lock and a micro processor that regulates the functioning of the electric motor and the door lock.
  • the control circuit guarantees that the electric motor is halted.
  • One end of the control circuit is connected to the line between the triac and the door lock, and the other end to the relay of the electric motor and the control circuit measures the voltage on the triac or the door lock by taking the mains voltage as reference.
  • the control circuit decides whether or not the triac is in error depending on the measured voltage and if the triac is decided to be in error, then cuts off the feed current of the relay and halts the electric motor.
  • the control circuit detects a low voltage on the triac by detecting the voltage difference between the neutral line (0 Volt) of the mains voltage and the triac outlet, decides that the triac is in transmission and delivers energy to the relay.
  • the control circuit detects a voltage close to the mains voltage on the triac, decides that the triac is open circuit, that is in error, and cuts off the energy that feeds the relay.
  • the control circuit detects the voltage difference between the door lock inlet and the door lock outlet in the phase side (220 - 230 V) of the mains voltage, and if a voltage is detected on the door lock, decides that the triac is in transmission and delivers energy to the relay.
  • the control circuit does not detect a voltage on the door lock, decides that a triac error is causing the door lock not to be driven and cuts off the energy that feeds the relay.
  • Figure 1 - is the schematic view of a control circuit in a washer/dryer.
  • the washer/dryer (1) comprises an electric motor (2) that moves the drum wherein the laundry is emplaced, one or more relays (3) that changes to the active - passive mode by being energized with the control signals received and maintains the electric motor (2) to be operated, halted or the operational direction changed, a door for accessing the drum, a door lock (4), for example the electromagnetic type, that prevents the door to be opened by being locked during the washing and allows the door to be opened after the washing process, a triac (5) connected to the main power supply that energizes the door lock (4) by functioning as a switching device and a microprocessor (6) that regulates the operation of the electric motor (2) and the door lock (4) for maintaining user safety, for example before the door is opened by the user after the washing process, gives the command for opening the door lock (4) after the completion of inertial rotation of the electric motor (2).
  • a door lock (4) for example the electromagnetic type
  • the washer/dryer (1) of the present invention comprises a control circuit (7),
  • control circuit (7) decides that the triac (5) is in transmission (normal) after evaluating the voltage measured on the triac (5) or the door lock (4), then the operation control of the relay (3) is maintained by the microprocessor (6) and the control circuit (7) does not interfere in the operation of the microprocessor (6).
  • control circuit (7) When the control circuit (7) detects that the triac (5) is open circuit and not functioning, cuts off the energy feeding the relay (3) maintaining thereof to change to passive mode and halts the electric motor (2) without taking notice of the microprocessor (6) commands.
  • the triac (5) is controlled by the microprocessor (6) under normal work conditions and the control circuit (7) is activated when the triac (5) does not operate as a result of a microprocessor (6) error, providing an additional security.
  • the control circuit (7) comprises a voltage divider (8) that measures and evaluates the voltage on the triac (5) or the door lock (4), a rectifier (9) that converts AC voltage to DC voltage and furthermore transistors are provided in the control circuit (7) that function as switches for delivering energy to the relay (3) or cut off the energy to the relay (3) as a result of evaluating the measured voltage.
  • the control circuit (7) detects the voltage difference between the triac (5) inlet and triac (5) outlet on the side of the mains voltage (L1), for example when a low voltage like 1 - 2 V close to the voltage generated by the triac (5) is detected, decides that the triac (5) is in transmission (not in error) and delivers energy to the relay (3) , and if a voltage like the 220 - 230 V close to the mains voltage is detected on the triac (5), then cuts off the energy feeding the relay (3) by deciding that the triac (5) is in error.
  • L1 mains voltage
  • the transistors are selected such that energy is delivered to the relay (3) when a low voltage that has to be generated at the triac (5) is detected, and to cut off the energy delivered to the relay (3) when a voltage close to mains voltage is measured.
  • the voltage difference between the triac (5) outlet and the neutral line (zero voltage) of the mains voltage is reduced by means of the voltage divider (8) and is converted to DC voltage by means of the rectifier (9).
  • the DC voltage is then delivered to the relay (3) by means of the transistors.
  • the control circuit (7) detects the voltage difference between the door lock (4) inlet and door lock (4) outlet in the phase side (220 - 230 V) (L2) of the mains voltage, and if a voltage is detected on the door lock (4), decides that the triac (5) is in transmission and delivers energy to the relay (3).
  • the control circuit (7) does not detect a voltage on the door lock (4), then decides that a triac (5) error is causing the door lock (4) not to be energized and cuts off the energy that feeds the relay (3).
  • the control circuit (7) comprises an opto-isolator (10) that transmits the voltage in suitable values since the reference of the door lock (4) is the phase line (L2) of the mains voltage having 220 - 230 V voltage and the reference of the control circuit (7) is the neutral line (0 Volt) (L1) of the mains voltage.
  • the opto-isolator (10) is in the passive mode.
  • the opto-isolator (10) is in the active mode since mains voltage is measured on the triac (5) and by the voltage it delivers, maintains the transistors to cut off the energy transmitted to the relay (3).
  • the control circuit (7) of the present invention is activated when the microprocessor (6) controlling operation of the door lock (4) and the electric motor (2) is in error thereby maintaining to halt the electric motor (2) when the door of the washer/dryer (1) is opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Centrifugal Separators (AREA)

Claims (5)

  1. Une laveuse / sécheuse (1) comprenant un moteur électrique (2) qui met en mouvement le tambour où le linge est mis en place, un ou plusieurs relais (3) qui se met alternativement en mode actif-passif en passant sous tension lorsqu'il reçoit des signaux de commande et maintient le moteur électrique (2) à l'état de fonctionnement ou d'arrêt, ou encore la direction opérationnelle changée, une serrure de porte (4) qui empêche la porte d'être ouverte pendant le lavage en étant verrouillée et permet à la porte de n'être ouverte qu'après le processus de lavage, un triac (5) qui active la serrure de porte (4) en fonctionnant comme un dispositif de commutation et un microprocesseur (6) qui ajuste le fonctionnement du moteur électrique (2) et la serrure de porte (4), et caractérisée par un circuit de contrôle (7)
    - comprenant une première extrémité (T1) qui est connectée à la ligne entre le triac (5) et la serrure de porte (4), et une seconde extrémité (T2) est connectée au relais (3),
    - qui mesure les voltages sur le triac (5) ou la serrure de porte (4) en prenant pour référence les tensions du réseau
    - qui détermine si le triac (5) est dans l'erreur ou non en fonction de la valeur de la tension mesurée, et
    - si le triac (5) est jugé être dans l'erreur, coupe le courant d'alimentation du relais (3) pour arrêter le moteur électrique (2).
  2. Une laveuse / sécheuse (1) selon la Revendication 1, caractérisée par le circuit de contrôle (7) comprenant un réducteur de tension (8) qui mesure et évalue la tension sur le triac (5) ou la serrure de porte (4), et un redresseur (9) qui convertit la tension AC en tension DC
  3. Une laveuse / sécheuse (1) selon la revendication 1 ou 2, caractérisée par le circuit de contrôle (7) qui détecte la différence de tension entre l'entrée de le triac (5) et la sortie de le triac (5) en fonction de la tension du réseau (L1), qui décide, si une basse tension est détectée sur le triac (5), que le triac (5) soit dans la transmission et fournisse de l'énergie pour le relais (3), et qui coupe, si une tension proche de la tension du réseau est détectée sur le triac (5), l'énergie qui alimente le relais (3) en jugeant que le triac (5) est dans l'erreur.
  4. Une laveuse / sécheuse (1) selon la revendication 1 ou 2, caractérisée par le circuit de contrôle (7) qui détecte la différence de tension entre l'entrée de la serrure de porte (4) et la sortie de la serrure de porte (4) en fonction de la tension du réseau (L2), qui décide, si une basse tension est détectée sur la serrure de porte (4), que le triac (5) soit dans la transmission et fournisse de l'énergie pour le relais (3), mais qui juge, si aucune tension n'est détectée sur la serrure de porte (4), que le triac (5) est dans l'erreur de façon à ne plus fournir de l'énergie à la serrure de porte (4) et qui coupe ainsi l'énergie qui alimente le relais (3).
  5. Une laveuse / sécheuse (1) selon la revendication 4, caractérisée par le circuit de contrôle (7) comprenant un opto-isolateur (10).
EP08760478A 2007-06-05 2008-06-04 Machine à laver séchante Active EP2162580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200703867 2007-06-05
PCT/EP2008/056896 WO2008148788A2 (fr) 2007-06-05 2008-06-04 Machine à laver séchante

Publications (2)

Publication Number Publication Date
EP2162580A2 EP2162580A2 (fr) 2010-03-17
EP2162580B1 true EP2162580B1 (fr) 2010-07-28

Family

ID=39941886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08760478A Active EP2162580B1 (fr) 2007-06-05 2008-06-04 Machine à laver séchante

Country Status (5)

Country Link
EP (1) EP2162580B1 (fr)
AT (1) ATE475739T1 (fr)
DE (1) DE602008001988D1 (fr)
ES (1) ES2348274T3 (fr)
WO (1) WO2008148788A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103376750B (zh) * 2012-04-23 2015-08-26 海尔集团公司 门开关控制电路及使用其的干衣机
EP3017106B1 (fr) * 2013-07-05 2017-09-20 Arçelik Anonim Sirketi Appareil de traitement du linge comportant une sécurité de porte améliorée
PL3172373T3 (pl) * 2014-07-21 2018-08-31 Bitron S.P.A. System blokady drzwi do sprzętu gospodarstwa domowego wyposażonego w taki system oraz sposób jego obsługi
CN113741345B (zh) * 2021-08-27 2023-03-07 安徽新诺精工股份有限公司 一种数控铣床安全检测控制系统
WO2023086068A2 (fr) * 2021-11-15 2023-05-19 Vestel Beyaz Esya Sanayi Ve Ticaret Anonim Sirketi Procédé de fonctionnement pour séchoirs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1585730B2 (de) * 1966-12-29 1974-02-07 Holzer Patent Ag, Zug (Schweiz) Sicherheitsvorrichtung für Zentrifugen u.dgl
IT1267583B1 (it) * 1994-09-13 1997-02-07 Zanussi Elettrodomestici Macchina lavabiancheria con dispositivi perfezionati di comando e controllo

Also Published As

Publication number Publication date
WO2008148788A2 (fr) 2008-12-11
ATE475739T1 (de) 2010-08-15
ES2348274T3 (es) 2010-12-02
EP2162580A2 (fr) 2010-03-17
DE602008001988D1 (de) 2010-09-09
WO2008148788A3 (fr) 2009-04-09

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