EP2638196B1 - Waschmaschine/trockner mit relais zur bestimmung der drehrichtung des motors - Google Patents

Waschmaschine/trockner mit relais zur bestimmung der drehrichtung des motors Download PDF

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Publication number
EP2638196B1
EP2638196B1 EP20110779653 EP11779653A EP2638196B1 EP 2638196 B1 EP2638196 B1 EP 2638196B1 EP 20110779653 EP20110779653 EP 20110779653 EP 11779653 A EP11779653 A EP 11779653A EP 2638196 B1 EP2638196 B1 EP 2638196B1
Authority
EP
European Patent Office
Prior art keywords
relay
dryer
winding
motor
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.)
Not-in-force
Application number
EP20110779653
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English (en)
French (fr)
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EP2638196A1 (de
Inventor
Erdem Kara
Arif Zafer Ozarslan
Sinan Sekban
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
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 AS filed Critical Arcelik AS
Priority to PL11779653T priority Critical patent/PL2638196T3/pl
Publication of EP2638196A1 publication Critical patent/EP2638196A1/de
Application granted granted Critical
Publication of EP2638196B1 publication Critical patent/EP2638196B1/de
Not-in-force legal-status Critical Current
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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • 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
    • D06F2103/34—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
    • D06F2103/44—Current or voltage
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/62—Stopping or disabling machine operation
    • 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
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • D06F58/08—Driving 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
    • D06F58/32—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

Definitions

  • the present invention relates to a washer/dryer wherein the rotational direction of the motor can be changed by a relay.
  • a drum and a motor that provides the drum to be rotated are included. Starting-up, stopping and the rotational direction of the motor are determined by a control circuit.
  • the relay that determines the rotational direction of the motor is in the first position, the current feeds the arm that rotates the motor clockwise.
  • the motor is desired to be rotated in the reverse direction, the current is delivered on the relay coil and the relay contacts the other arm of the motor. , the motor direction relay can adhere to the contacted arm as a result of a problem occurred in the coil or short circuit.
  • the relay continues to deliver electricity only to the arm it has adhered to even though the control unit gives the command to the relay for delivering electricity to the arm of the motor providing clockwise rotation for a certain time period, and to the arm providing counterclockwise rotation for a certain time period.
  • This causes overloading in the circuit elements through which current flows in excess of their requirements.
  • the circuit elements subjected to overloading for a long time may malfunction in the course of time. For example, if the motor direction relay in a dryer adheres to the arm of the motor providing counterclockwise rotation, air circulation cannot be provided properly and the heaters that provide the air to be heated cause the ambient environment to be overheated.
  • various tests are performed with the software installed in the control circuit in order to understand the problem of relay adherence.
  • the United States Patent Document No. US3909955 a clothes dryer is explained having an integrated circuit control for monitoring motor relay malfunction state.
  • the United States Patent Document No. US4338730 A discloses a dryer wherein wet clothing placed in a drying chamber is dried by hot air resulting from the heat generated by an electric heater.
  • the dryer comprises a ventilation fan which draws off air streams from the drying chamber and introduces the same amount of air streams as those thus removed into the drying chamber during a drying cycle.
  • the aim of the present invention is the realization of a washer/dryer wherein the relay error can be detected easily.
  • the washer/dryer realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a relay providing rotational direction of the motor to be changed and a control circuit having a measuring unit connected to one of the motor windings for detecting relay adherence.
  • the control unit regulates the operational program of the washer/dryer by monitoring functioning of the components like the motor, heater, pump, valve, fan that are disposed in the washer/dryer.
  • the measuring unit disposed in the control circuit is connected to one of the windings so that this adherence situation can be detected.
  • the measuring unit that measures the electrical data in the winding provides relay adherence situation to be detected.
  • control unit ends the operational program and warns the user when the relay adherence is detected in accordance with the data received from the measuring unit.
  • the measuring unit measures the voltage of the winding to which it is connected.
  • the measuring unit is a voltage measuring circuit that measures the mains voltage by which the control circuit is fed.
  • the motor operation of which is appropriate when the mains voltage is, for example around 230 V, cannot start up when the mains voltage is 170 V.
  • the heater can be also damaged over 260 V when the mains voltage is around 220 V. Therefore, the measuring unit also monitors the mains voltage and enables the operational program to start by delivering electricity to the components within the interval of around 190V-250V.
  • an additional device is not required to be used for detecting relay adherence situation.
  • the measuring unit measures the current passing through the winding to which it is connected.
  • the measuring unit comprises a switching circuit that becomes open circuit when the voltage in the winding to which it is connected reaches a certain value.
  • the measuring unit is an impedance measuring circuit that measures the impedance in the winding to which it is connected.
  • the measuring unit is connected to the main winding which draws high current.
  • the measuring unit is connected to the auxiliary winding.
  • the measuring unit is connected to the main winding or the auxiliary winding and the control circuit detects whether or not the relay has adhered to one of the windings.
  • the washer/dryer (1) of the present invention comprises a drum wherein the laundry is placed, a motor (2) that provides the drum to be rotated, having a main winding (MW) and an auxiliary winding (AW) and a relay (3) providing the motor (2) to rotate in one direction when connected to the main winding (MW) of the motor (2) and providing the motor (2) to rotate in the other direction when connected to the auxiliary winding (AW) of the motor (2), providing the motor (2) to rotate in the other direction, a capacitor (6) disposed between the windings (MW and AW) and a control circuit (4) that determines the position of the relay (3), providing control of the washing parameters.
  • a motor (2) that provides the drum to be rotated, having a main winding (MW) and an auxiliary winding (AW) and a relay (3) providing the motor (2) to rotate in one direction when connected to the main winding (MW) of the motor (2) and providing the motor (2) to rotate in the other direction when connected to the auxiliary winding (AW) of the motor (2), providing the motor (2) to rotate
  • the washer/dryer (1) furthermore comprises a measuring unit (5), disposed in the control circuit (4), electrically connected to the main winding (MW) or the auxiliary winding (AW) of the motor (2), providing the position of the relay (3) to be determined from the measured electrical data by detecting whether or not the current delivered from the mains to the main winding (MW) or the auxiliary winding (AW) passes through the capacitor (6).
  • a measuring unit (5) disposed in the control circuit (4), electrically connected to the main winding (MW) or the auxiliary winding (AW) of the motor (2), providing the position of the relay (3) to be determined from the measured electrical data by detecting whether or not the current delivered from the mains to the main winding (MW) or the auxiliary winding (AW) passes through the capacitor (6).
  • the relay (3) comprises a coil (not shown in the figures) that generates a magnetic field when current is delivered by the control circuit (4) and changes the position of the relay (3) with the effect of the magnetic field.
  • the motor (2) rotating clockwise when the relay (3) is in the first position, starts to rotate in the opposite direction by means of the relay (3) shifting to the second position as current is fed to the coil of the relay (3).
  • the relay (3) can adhere to the contact tip of the contacted winding (MW or AW) as a result of a malfunction in the relay (3) or due to the current delivered to the motor (2) being too high. When the relay (3) adheres to the contact tip of the winding (MW or AW), it delivers current to that winding (MW or AW) for a longer time than necessary.
  • the measuring unit (5) disposed in the control circuit (4) can measure the electrical data of the winding (MW or AW) to which it is connected by means of the current in the capacitor (6) between the windings (MW or AW).
  • the capacitor (6) is connected in series to the auxiliary winding (AW) and in parallel to the main winding (MW) while the relay (3) is connected to the main winding (MW).
  • the measuring unit (5) measures the data received directly from the mains since the effect of the capacitor (6) does not exist ( Figure 3 ).
  • the capacitor (6) is connected in series to the main winding (MW) while the relay (3) is connected to the auxiliary winding (AW) ( Figure 4 ).
  • the measuring unit (5) this time measures the data received from the capacitor (6) and the mains on the main winding (MW) ( Figure 4 ).
  • the measuring unit (5) measures the data received from the mains when the relay (3) is connected to the winding (MW or AW) the measuring unit (5) is connected to.
  • the measuring unit (5) measures the total of the mains data and the capacitor (6) data when the relay (3) is connected to the winding (MW or AW) the measuring unit (5) is hot connected to.
  • the control circuit (4) determines which winding (MW or AW) the relay (3) is connected to depending on the measured data.
  • the control circuit (4) controls adherence of the relay (3) by comparing the detected relay (3) position with the position the relay (3) has to be located, which is prerecorded in its memory.
  • the control circuit (4) comprises a safety algorithm that provides the current delivered to the relay (3) to be cut off when the adherence of the relay (3) is detected.
  • mechanical motion is provided by means of a switch disposed in the control circuit (4) and the relay (3) is provided to be released from the winding (MW or AW) to which it has adhered. Consequently, the motor (2) is prevented from continuously rotating in the same direction and from overspeeding, thus safety is maintained.
  • control circuit (4) warns the user by ending the operational program of the washer/dryer (1) when the relay (3) adherence is detected and/or cannot be resolved.
  • the motor (2) is stopped if error recovery program is not included in the control circuit (4) or if error recovery cannot be performed.
  • the measuring unit (5) is a voltage measuring circuit that measures the voltage on the winding (MW or AW) to which it is connected.
  • the relay (3) adherence situation can be detected by the measured voltage value.
  • the control circuit (4) controls whether or not the mains voltage is within the mains voltage values prerecorded in the memory of the control circuit (4) by the producer, in cases where the measuring unit (5) measures the mains voltage, for example when the measuring unit (5) and the relay (3) are connected to the main winding (MW). There is a minimum voltage value required for the motor (2) to start up. There is a maximum voltage value by which various components located on the control circuit (4) and elements such as the heater, fan disposed in the washer/dryer (1) fed by the mains voltage can be fed without being damaged. Therefore, in cases where the measuring unit (5) measures the mains voltage, the control unit (4) does not start the operational program of the washer/dryer (1) if the measured voltage value is not between the minimum and maximum voltage values recorded in its memory.
  • the measuring unit (5) is a current measuring circuit that measures the current passing from the winding (MW or AW) to which it is connected.
  • the control circuit (4) compares the measured voltage value with the voltage value that has to pass through the measuring unit (5) under normal conditions, prerecorded in its memory by the producer, and determines adherence situation of the relay (3).
  • the measuring unit (5) comprises a switching element, for example a diode, that switches when a certain voltage difference occurs between the winding (MW or AW) to which it is connected and the output of the motor (2).
  • a switching element for example a diode
  • the measuring unit (5) is an impedance measuring circuit that measures the impedance of the winding (MW or AW) to which it is connected.
  • the measuring unit (5) enables to determine the adherence situation of the relay (3) from the difference in the impedance, named as resistivity, calculated from the ratio of the voltage on the winding (MW or AW) to the current.
  • the washer/dryer (1) By means of the measuring unit (5) disposed in the washer/dryer (1) of the present invention, whether or not the relay (3), determining rotational direction of the motor (2), has adhered to the main winding (MW) or the auxiliary winding (AW) of the motor (2) can be easily detected from the differences in the measured electrical data. Consequently, the washer/dryer (1) is provided to operate safely.

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

Claims (8)

  1. Wasch-/Trockenvorrichtung (1), umfassend eine Trommel, einen Motor (2), der dafür sorgt, dass sich die Trommel dreht, und eine Hauptwicklung (MW) und eine Hilfswicklung (AW) und ein Relais (3) aufweist, das dafür sorgt, dass sich der Motor (2) in einer Richtung dreht, wenn es mit der Hauptwicklung (MW) des Motors (2) verbunden ist, und dafür sorgt, dass sich der Motor (2) in der anderen Richtung dreht, wenn es mit der Hilfswicklung (AW) verbunden ist, einen Kondensator (6), der zwischen den Wicklungen (MW und AW) angeordnet ist, und eine Steuerschaltung (4), die die Stellung des Relais (3) bestimmt und eine Steuerung der Waschparameter ermöglicht, und gekennzeichnet durch eine Messeinheit (5), die in der Steuerschaltung (4) angeordnet ist und elektrisch mit der Hauptwicklung (MW) oder der Hilfswicklung (AW) des Motors (2) verbunden ist und es ermöglicht, dass die Stellung des Relais (3) anhand der gemessenen elektrischen Daten bestimmt wird, indem erkannt wird, ob der Strom, der vom Stromnetz an die Hauptwicklung (MW) oder der Hilfswicklung (AW) geleitet wird, durch den Kondensator (6) fließt.
  2. Wasch-/Trockenvorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Steuerschaltung (4) die Anhaftung des Relais (3) steuert, indem sie die erkannte Stellung des Relais (3) mit der Stellung vergleicht, in der sich das Relais (3) befinden muss und die in ihrem Speicher im Voraus aufgezeichnet wurde.
  3. Wasch-/Trockenvorrichtung (1) nach Anspruch 1 und 2, dadurch gekennzeichnet, dass die Steuerschaltung (4) den Benutzer warnt, indem sie das Betriebsprogramm der Wasch-/Trockenvorrichtung (1) beendet, wenn die Anhaftungssituation des Relais (3) erkannt wird und/oder nicht behoben werden kann.
  4. Wasch-/Trockenvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Messeinheit (5) eine Spannungsmessschaltung ist, die die Spannung an der Wicklung (MW oder AW) misst, mit der sie verbunden ist.
  5. Wasch-/Trockenvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Steuerschaltung (4) steuert, ob die Versorgungsspannung innerhalb der Versorgungsspannungswerte liegt, die vom Hersteller im Voraus in ihrem Speicher aufgezeichnet werden.
  6. Wasch-/Trockenvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Messeinheit (5) eine Strommessschaltung ist, die den Strom misst, der durch die Wicklung (MW oder AW) fließt, mit der sie verbunden ist.
  7. Wasch-/Trockenvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Messeinheit (5) ein Schaltelement umfasst, das umschaltet, wenn eine bestimmte Spannungsdifferenz zwischen der Wicklung (MW oder AW), mit der sie verbunden ist, und dem Ausgang des Motors (2) auftritt.
  8. Wasch-/Trockenvorrichtung (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Messeinheit (5) eine Impedanzmessschaltung ist, die die Impedanz der Wicklung (MW oder AW) misst, mit der sie verbunden ist.
EP20110779653 2010-11-09 2011-11-04 Waschmaschine/trockner mit relais zur bestimmung der drehrichtung des motors Not-in-force EP2638196B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11779653T PL2638196T3 (pl) 2010-11-09 2011-11-04 Pralka/suszarka zawierająca przekaźnik określający kierunek obrotu silnika

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201009271 2010-11-09
PCT/EP2011/069474 WO2012062671A1 (en) 2010-11-09 2011-11-04 A washer/dryer comprising a relay determining rotational direction of the motor

Publications (2)

Publication Number Publication Date
EP2638196A1 EP2638196A1 (de) 2013-09-18
EP2638196B1 true EP2638196B1 (de) 2015-04-29

Family

ID=44913287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20110779653 Not-in-force EP2638196B1 (de) 2010-11-09 2011-11-04 Waschmaschine/trockner mit relais zur bestimmung der drehrichtung des motors

Country Status (3)

Country Link
EP (1) EP2638196B1 (de)
PL (1) PL2638196T3 (de)
WO (1) WO2012062671A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB934822A (en) * 1959-06-22 1963-08-21 Siemens Elektrogeraete Gmbh Improvements in or relating to washing machines
US3909955A (en) 1973-12-03 1975-10-07 Whirlpool Co Phase shift to prevent relay contact erosion in a clothes dryer
BE858672A (nl) * 1977-09-14 1978-03-14 Itt Ind Belgium N V Tijdmeetinrichting, stapinrichting, scharnier en wasgoedbehan-delingsmachine
US4338730A (en) * 1979-08-23 1982-07-13 Tokyo Shibaura Denki Kabushiki Kaisha Dryer
DE602004015481D1 (de) * 2004-12-01 2008-09-11 Electrolux Home Prod Corp Haushaltswäschetrockner mit Startvorrichtung

Also Published As

Publication number Publication date
PL2638196T3 (pl) 2015-10-30
WO2012062671A1 (en) 2012-05-18
EP2638196A1 (de) 2013-09-18

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