EP0702103B1 - Dispositif de commande d'une machine à laver - Google Patents

Dispositif de commande d'une machine à laver Download PDF

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Publication number
EP0702103B1
EP0702103B1 EP95112638A EP95112638A EP0702103B1 EP 0702103 B1 EP0702103 B1 EP 0702103B1 EP 95112638 A EP95112638 A EP 95112638A EP 95112638 A EP95112638 A EP 95112638A EP 0702103 B1 EP0702103 B1 EP 0702103B1
Authority
EP
European Patent Office
Prior art keywords
washing machine
clothes washing
motor
switch
drum
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.)
Expired - Lifetime
Application number
EP95112638A
Other languages
German (de)
English (en)
Other versions
EP0702103A1 (fr
Inventor
Giuseppe Frucco
Fernando Russo
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.)
Electrolux Zanussi SpA
Original Assignee
Electrolux Zanussi Elettrodomestici SpA
Electrolux Zanussi SpA
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 Electrolux Zanussi Elettrodomestici SpA, Electrolux Zanussi SpA filed Critical Electrolux Zanussi Elettrodomestici SpA
Publication of EP0702103A1 publication Critical patent/EP0702103A1/fr
Application granted granted Critical
Publication of EP0702103B1 publication Critical patent/EP0702103B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/08—Control circuits or arrangements thereof
    • 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
    • D06F34/04—Signal transfer or data transmission 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the present invention refers to a household-type clothes washing machine comprising a programme sequence control switch to control the actuation of the various process cycles to be performed by the machine, and a number of control devices provided to ensure correct operation of the same machine according to pre-set process parameters.
  • Clothes washing machines are generally known to be equipped with a safety interlock arrangement provided to prevent the loading door from being able to be opened when the machine is operating.
  • a first type of such door interlock arrangement is generally adapted to enable the loading door to only be opened, upon conclusion of a process cycle, after a certain delay time has elapsed so as to allow the user to reach into the drum under conditions of greater safety.
  • Such an arrangement generally consists of some electromechanical device comprising mainly a catch or similar contrivance which is adapted to lock the loading door in its closed position under the action of a moving arm associated to a delaying element of the positive temperature coefficient (PTC) type, as this is described for instance in the patent specification GB-A-2 128 283.
  • PTC positive temperature coefficient
  • Such a PTC-type element is energized electrically, so as to command the safety arrangement accordingly, through appropriately provided controlled-type switches which indesirably complicate the overall control system of the machine.
  • switches may consist of appropriately provided contacts of the programme sequence control switch (in electromechanical solutions) or relays and/or Triacs (in electronic solutions), with corresponding driving and filter circuits associated thereto, which not only add to the overall costs of the product, but also reduce the reliability of the machine owing to the increased number of component parts subject to possible failure or breakdown.
  • Another type of door interlock arrangement is defined as "instantaneous" due to the fact that the loading door can be opened immediately upon actuation of an electric control element, whereas the opening of the door will in any case only be allowed if the drum is not rotating any longer, the level of the water is below the lower edge of the door and the temperature of the water is below a given value (for instance, 40°C).
  • Clothes washing machines are also generally known to be provided with a water flow distributing arrangement which, when directed by the programme sequence control switch to do so, diverts the flow of incoming water into the various compartments provided in the detergent dispenser to hold the detergents and the various additives and rinsing aids required to perform the washing process.
  • the systems that have been used up to now to correctly shift or direct the water flow distributor in correspondence of the required compartment are based on logical position codings capable of being implemented and carried out in a variety of manners.
  • the solution according to the present invention substantially proposes the use of the electronic switch, ie. the Triac, which is normally present in the clothes washing machine to control the motor driving the rotating drum, as a general element controlling various critical component parts of the machine, such as the PTC element of the door interlock arrangement and position contacts provided to control the distribution of the inlet water flow and identify the individual operating phases of the washing cycles which the machine is going through.
  • the electronic switch ie. the Triac
  • the Triac which is normally present in the clothes washing machine to control the motor driving the rotating drum
  • various critical component parts of the machine such as the PTC element of the door interlock arrangement and position contacts provided to control the distribution of the inlet water flow and identify the individual operating phases of the washing cycles which the machine is going through.
  • the reference numeral 1 is used to indicate the main on/off switch of the clothes washing machine
  • the reference numeral 2 to indicate the electrical contact of the door interlock device
  • the reference numeral 3 to indicate the PTC element of the door interlock arrangement
  • the reference numeral 4 to indicate the electronic control module of the clothes washing machine
  • the reference numeral 5 to indicate the general relay of the machine
  • the reference numeral 6 to indicate a tachometer adapted to measure the revolutions per minute of the driving motor and, hence, of the rotating drum of the machine
  • the reference numeral 7 to indicate the stator of the motor rotatably driving the rotating drum of the machine
  • the reference numeral 8 to indicate the rotor of the same motor
  • the reference numeral 9 to indicate the electric portion of the programme sequence control switch governing the operational elements of the clothes washing machine and, in particular, the inlet water flow distributing arrangement (not shown)
  • the reference numeral 10 to indicate the power contacts of said programme sequence control switch
  • the reference numeral 11 to indicate the wiping contacts equipping the programme sequence control
  • the wiping contacts 11 are additionally used to identify, through counting, all of the electrical positions taken by the programme sequence control switch while going through the various cycles, as this will be explained in greater detail further on.
  • Figure 2 which illustrates the electrical schematics of a clothes washing machine equipped with a door interlock arrangement of the instantaneous type
  • the only variant appearing as compared to Figure 1 is represented by the coil 22 (which replaces the PTC element 3) of the door interlock arrangement and the corresponding electrical connection with the electronic control module 4.
  • All other component parts are identical to the ones appearing in Figure 1, so that they are indicated using the same reference numerals.
  • the PTC element 3 of the door interlock arrangement is connected to the Triac 19 via a connection terminal 24 of the electronic control module 4.
  • the drum driving motor 7, 8, further to its normal connection with its corresponding Triac 19, via a contact 25 of the programme sequence control switch, and the reversing relay 16, is also connected, via said reversing relay 16, with the general relay 5 and the electric contact 2 of the door interlock arrangement, via a switch-over contact 26.
  • the PTC element 3 be energized either continuously or intermittently, whereas in the latter case the interval shall however be shorter than its release time (usually ⁇ 1.5 minutes). By taking advantage of this delay time, it is therefore possible to keep the door locked by simply letting the drum of the washing machine rotate according to an appropriately selected rhythm.
  • the solution according to the present invention enables the door to be kept locked even without the need for the drum to be driven. This is possible through the contact 26 being switched over so as to divert the power supply from the driving motor 7, 8 to the relay 5. In this particular situation, all other electric elements of the washing machine are de-energized, so that such a condition may be only brought about in well-determined phases of an operational cycle (for instance, in the "pre-soak" phase, in which the clothes, and in particular the delicate ones, have to be kept immersed in water for a certain period of time, without any rotation of the drum).
  • the microprocessor 17 will activate the relay 5 by switching over the contact 26 so as to remove the power supply from the motor 7, 8.
  • the door of the clothes washing machine will then be able to be opened after the inherent delay time of the PTC element 3 has been duly allowed to elapse.
  • the relay 5 is de-energized (switch-over contact 26 in the position shown in Figure 1) and the Triac 19 is operating regularly, both the door interlock arrangement 2, 3 and all of the functional elements of the washing machine are activated.
  • the drum driving motor 7, 8 is in this way de-energized and, upon the drum coming to a standstill, the microprocessor 17 will activate the relay 5 (by switching over the contact 26 from the position shown in Figure 2), thereby energizing the coil 22 that will open the switch 2 of the drum loading door.
  • Such a solution enables, through only two 220-volt signals coming from the contacts 11, various positions corresponding to the main phases of the operational cycles of the machine (ie. pre-wash/rinses, main wash, drying, etc.) to be recognized. Within each one of such phases there may be several positions of electrical actuation which the microprocessor 17 is able to recognize through a simple counting starting from the first one.
  • the microprocessor 17 is capable to recognize the starting position of a phase and can shift the corresponding actuator to the desired position; any subsequent shifting will be made forward and/or backward with respect to that position, using per sè known means, based on said counting.
  • the microprocessor 17 will start from the current position and shift the inlet water flow distributor backward until a change of phase is read. This is needed by the microprocessor 17 in order to be able to identify the position in a univocal manner.
  • a solution like this which may for instance comprise a mechanical phase indicator means (flange), arranged coaxially with respect to the camshaft of the programme sequence control switch, and a clutch means being adapted to only act when the shaft is rotated clockwise, enables such an identification of position to be made without altering the associated phase indication.
  • the described solution enables various positions (of the inlet water flow distributor, the current cycle phase being performed, the electric contacts of the various functional elements of the machine, and the like) to be recognized by only using two connection lines to the microprocessor. Furthermore, the signals coming from the water flow distributor position contacts 11 are more reliable since the latter are energized with alternating current at 220 Volts reducing oxidation problems.

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

Claims (5)

  1. Machine à laver le linge du type à tambour rotatif, comprenant au moins un agencement (2, 3) adapté pour verrouiller la porte de chargement du tambour, un distributeur d'écoulement d'eau d'admission pour diriger, de manière sélective, l'écoulement d'eau vers les divers compartiments du distributeur de détergent, un moteur (7, 8) pour entraíner en rotation le tambour, un commutateur de commande de séquence de programme électromécanique (9), lesdits composants étant tous connectés à un agencement de commande électronique (4) comprenant un relais principal (5), un relais d'inversion de sens rotation de tambour (16), un microprocesseur (17) et un commutateur de commande de moteur électronique (19), caractérisée en ce que le moteur de commande (13) du commutateur de commande de séquence de programme (9) est commandé, via le microprocesseur (17) et le relais principal (5), par deux signaux de position transmis sur deux lignes de connexion (20, 21) provenant de contacts (11) respectifs du commutateur de commande de séquence de programme, ainsi que par l'agencement de verrouillage de porte (2, 3) et le commutateur électronique (19) du moteur (7, 8).
  2. Machine à laver le linge selon la revendication 1, caractérisée en ce que les deux signaux de position des contacts (11), en combinaison avec le comptage effectué par le microprocesseur (17), constituent, de plus, les moyens destinés à reconnaítre les phases du cycle de fonctionnement exécuté par la machine.
  3. Machine à laver le linge selon la revendication 1 ou 2, caractérisée en ce que les deux signaux de position, en combinaison avec le comptage effectué par le microprocesseur (17), sont associés au mouvement du moteur (13) pour former les moyens destinés à identifier la phase du cycle dans le cas du rétablissement de l'alimentation de la machine à laver après une panne.
  4. Machine à laver le linge selon la revendication 1, dans laquelle l'agencement de verrouillage de porte est du type à retard, caractérisée en ce que l'agencement de verrouillage de porte (2, 3) et le moteur d'entraínement de tambour (7, 8) sont connectés au relais principal (5) via un contact de commutation (26).
  5. Machine à laver le linge selon la revendication 1, dans laquelle l'agencement de verrouillage de porte est du type instantané, caractérisée en ce que la bobine (22) de l'agencement de verrouillage de porte est directement connectée au commutateur électronique (19) du moteur (7, 8) via une borne (24) du module de commande électronique (4) et est, de plus, connectée au relais principal (5) via un contact de commutation (26).
EP95112638A 1994-09-13 1995-08-11 Dispositif de commande d'une machine à laver Expired - Lifetime EP0702103B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN940052 1994-09-13
IT94PN000052A IT1267583B1 (it) 1994-09-13 1994-09-13 Macchina lavabiancheria con dispositivi perfezionati di comando e controllo

Publications (2)

Publication Number Publication Date
EP0702103A1 EP0702103A1 (fr) 1996-03-20
EP0702103B1 true EP0702103B1 (fr) 1998-12-02

Family

ID=11394944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112638A Expired - Lifetime EP0702103B1 (fr) 1994-09-13 1995-08-11 Dispositif de commande d'une machine à laver

Country Status (4)

Country Link
EP (1) EP0702103B1 (fr)
DE (1) DE69506345T2 (fr)
ES (1) ES2127440T3 (fr)
IT (1) IT1267583B1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19953633A1 (de) * 1999-11-09 2001-05-10 Diehl Ako Stiftung Gmbh & Co Steuereinrichtung einer Waschmaschine oder eines Wäschetrockners
DE102005049892B3 (de) * 2005-10-17 2007-05-03 Diehl Ako Stiftung & Co. Kg Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung
EP1962011B1 (fr) 2007-02-26 2010-04-21 Diehl AKO Stiftung & Co. KG Appareil de traitement du linge
DE102007037767A1 (de) 2007-02-26 2008-08-28 Diehl Ako Stiftung & Co. Kg Gerät mit ansteuerbarer Schutzeinrichtung
DE102007019102B4 (de) * 2007-04-23 2009-01-22 Diehl Ako Stiftung & Co. Kg Steuervorrichtung und Steuerverfahren für ein elektrisches Haushaltsgerät
DE602008001988D1 (de) * 2007-06-05 2010-09-09 Arcelik Anonim Sirketi Tuzla Waschmaschine/trockner
ES2353632T3 (es) * 2007-06-26 2011-03-03 Arçelik Anonim Sirketi Lavadora/secadora.
DE102007031882B4 (de) 2007-07-09 2016-07-21 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsgerät mit Türverriegelungselement
ITMC20070141A1 (it) * 2007-07-10 2009-01-11 Elmarc Societa Per Azioni Sistema e circuito elettronico di protezione del portello delle macchine lavatrici o lava-asciugatrici.
PL2376698T3 (pl) * 2008-12-03 2013-04-30 Arcelik As Urządzenie gospodarstwa domowego o sterowanym nagrzewaniu silnika pompy
TR201007760A1 (tr) * 2010-09-22 2012-04-24 Ar�El�K Anon�M ��Rket� Bir çamaşır makinası.
JP6253237B2 (ja) * 2013-02-25 2017-12-27 東芝ライフスタイル株式会社 ランドリー機器
JP2018027445A (ja) * 2017-11-28 2018-02-22 東芝ライフスタイル株式会社 ランドリー機器

Family Cites Families (9)

* 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
DE1588274A1 (de) * 1967-01-31 1970-05-14 Walter Holzer Anordnung zur programmabhaengigen Steuerung,insbesondere einer vollautomatischen Waschmaschine
DE2558170C2 (de) * 1975-12-23 1986-09-11 Miele & Cie GmbH & Co, 4830 Gütersloh Programmsteuereinrichtung für Wäschebehandlungs- und Geschirrspülmaschinen
GB2048314B (en) * 1979-05-14 1983-05-18 Ti Domestic Appliances Ltd Electrical machines
IT8236051V0 (it) 1982-10-04 1982-10-04 Texas Instruments Italia Spa Perfezionamento nei dispositivi di bloccaggio di sicurezza per sportelli di lavatrici e simili ad azionamento mediante bimetallo a riscaldamento voltmetrico
DE3303992A1 (de) * 1983-02-05 1984-08-09 Miele & Cie GmbH & Co, 4830 Gütersloh Programmschaltwerk fuer waeschebehandlungs- und geschirrspuelmaschinen
FR2601470B1 (fr) 1986-07-10 1988-10-07 Ciapem Dispositif de commande de lave-linge a microprocesseur et composant electromecanique
IT1250379B (it) 1991-02-27 1995-04-07 Zanussi Elettrodomestici Dispositivo di controllo dell'introduzione del detersivo per macchine lavatrici
IT1250395B (it) * 1991-06-26 1995-04-07 Zanussi Elettrodomestici Dispositivo di controllo per macchine lavatrici

Also Published As

Publication number Publication date
DE69506345D1 (de) 1999-01-14
ES2127440T3 (es) 1999-04-16
ITPN940052A1 (it) 1996-03-13
ITPN940052A0 (it) 1994-09-13
IT1267583B1 (it) 1997-02-07
DE69506345T2 (de) 1999-04-29
EP0702103A1 (fr) 1996-03-20

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