EP2123820B1 - Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès - Google Patents

Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès Download PDF

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Publication number
EP2123820B1
EP2123820B1 EP09006501A EP09006501A EP2123820B1 EP 2123820 B1 EP2123820 B1 EP 2123820B1 EP 09006501 A EP09006501 A EP 09006501A EP 09006501 A EP09006501 A EP 09006501A EP 2123820 B1 EP2123820 B1 EP 2123820B1
Authority
EP
European Patent Office
Prior art keywords
door
household appliance
electric
electric household
blackout
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
EP09006501A
Other languages
German (de)
English (en)
Other versions
EP2123820A1 (fr
Inventor
Alessandro Cecco
Massimo Pizzolitto
Ivan Monticco
Mirko Cenedese
Roberto Bottos
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 Home Products Corp NV
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Electrolux Home Products Corp NV
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.)
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Publication date
Application filed by Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP09006501A priority Critical patent/EP2123820B1/fr
Priority to PL09006501T priority patent/PL2123820T3/pl
Priority to RU2009119294/12A priority patent/RU2497989C2/ru
Publication of EP2123820A1 publication Critical patent/EP2123820A1/fr
Application granted granted Critical
Publication of EP2123820B1 publication Critical patent/EP2123820B1/fr
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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
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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
    • D06F2101/00—User input 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
    • 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
    • D06F2103/40—Opening or locking status of doors
    • 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
    • D06F34/08—Control circuits or arrangements thereof

Definitions

  • the present invention relates to an electronic safety system for an electric household appliance with an access door.
  • the present invention relates to an electronic safety system for controlling restart of an electric household appliance, such as a washing machine and/or drier or any other similar household appliance, following a blackout, to which the following description refers purely by way of example.
  • some known electric household appliances such as washing machines or driers, comprise a casing; a laundry drum housed inside the casing and communicating with the outside through a drum access opening in the casing; and a door for opening/closing the opening.
  • Some of the above appliances are equipped with a safety system connecting the door mechanically to a safety switch along a main power circuit connected to the power line of the appliance.
  • the safety switch When the door is opened, the safety switch is activated to cut off power and immediately stop the appliance; and, conversely, when the door is closed again, the safety switch in the main circuit is closed to power and restart the appliance.
  • Safety systems of this sort have the major drawback of automatically restarting the appliance when the door is closed, by closing the safety switch and so powering the appliance.
  • the safety switch in the main power circuit ensures the appliance is stopped immediately if the door is inadvertently opened during the wash cycle, it fails to address other hazard situations.
  • the door may be opened, thus allowing a child to climb into the laundry drum.
  • accidentally closing the door closes the safety switch, so the appliance can be restarted when power is restored. That is, when power is restored with the safety switch closed, the appliance is restarted automatically, with disastrous consequences for the child inside the drum.
  • US 5,276,284 discloses a power switch disabler for disable a power switch provided for the energization and de-energization of electrical equipment contained within a housing.
  • the power switch disabler includes a housing provided with an access opening and associated access door.
  • the access door is provided with a latch for securing the door in a closed position.
  • a switch is provided for the energization and de-energization of at least one electrical component protected by the housing.
  • a switch enabler is provided for engaging the defeat lever for selectively enabling and disabling the switch.
  • US 4,461,940 discloses a fail-safe device for use in heating appliances including an electric oven and a microwave oven. More particularly it relates to a fail-safe device which includes an electronic control circuit for controlling a main circuit of the heating appliance and a mechanical latch for unlocking actuator levers for fail-safe switches responsive to the opening and closing movement of a door and to the turning on of a switch in the main circuit upon mechanical actuation of a cook start button.
  • the door interlock having a restart lockout function for an electrical appliance in order, after the appliance door has been opened during operation of the electrical appliance, to prevent the electrical appliance from being automatically restarted by closing the appliance door again.
  • the door interlock according to the invention comprises an interlocking device, which in a closed position interlocks a door of an electrical appliance and in an open position releases the door, and a restart lockout device, which in a release state enables operation of the electrical appliance and in a lockout state prevents operation of the electrical appliance.
  • US 4,056,891 discloses a latching circuit is inserted between the door switch of a dryer or any other unattended device and the operating components thereof. Thus when the door switch is opened the circuit is unlatched and a subsequent closure of the door will not resume operation of the device. To allow for such resumption a push-to-close switch is included across the latching circuit whereby a sequence of closing the door switch followed by manual depression of the push-to-close switch will restart the device
  • an electric household appliance as claimed in Claim 1 and preferably, though not necessarily, in any one of the Claims depending directly or indirectly on Claim 1.
  • an electronic safety system installable in an electric household appliance as claimed in Claim 15.
  • Number 1 in Figure 1 indicates as a whole an electric household appliance substantially comprising a casing 2; a laundry drum 3 mounted inside casing 2 to hold a given amount of laundry, and directly facing a laundry loading/unloading opening 4 formed in casing 2; and an access door 5 fitted to casing 2 to move, e.g. rotate, between an open position and a closed position opening and closing opening 4 respectively.
  • Electric household appliance 1 may be a washing and/or drying machine or any similar appliance, and comprises an electronic safety system 6 for determining a hazard condition - corresponding to door 5 being opened when electric power supply to the appliance is cut off, i.e. during a power cut (blackout) - or a safety condition - corresponding to door 5 not being opened during the power cut.
  • an electronic safety system 6 for determining a hazard condition - corresponding to door 5 being opened when electric power supply to the appliance is cut off, i.e. during a power cut (blackout) - or a safety condition - corresponding to door 5 not being opened during the power cut.
  • Electronic safety system 6 is also designed to selectively disable or enable operation of appliance 1 upon detecting the hazard or safety condition respectively.
  • the appliance comprises various internal electric equipment 7, such as an electric motor, pumps, and various known electric devices; and a main power circuit 8 connecting internal electric equipment 7 to a main power source 9 comprising, for example, an electric line at a predetermined supply voltage V1 of preferably, though not necessarily, about 230 V.
  • V1 a predetermined supply voltage
  • Main power circuit 8 comprises a power branch 10 connecting the external electric power source to electric equipment 7; an electronic switch 11 located along power branch 10, and which switches to off or on to respectively disconnect or connect appliance 1 to power source 9; and an electromechanical switch 14 located along power branch 10 and connected to door 5 to open and close when door 5 is moved into the open and closed position respectively.
  • electronic switch 11 may preferably, though not necessarily, comprise a TRIAC which receives a control signal SCOM and, depending on control signal SCOM, switches to on or off to respectively enable or cut off electric power supply to electric equipment 7.
  • TRIAC which receives a control signal SCOM and, depending on control signal SCOM, switches to on or off to respectively enable or cut off electric power supply to electric equipment 7.
  • Electronic safety system 6 comprises a detecting module 12 for detecting the hazard or safety condition; and a control module 13 for selectively disabling or enabling electronic switch 11 on detecting the hazard or safety condition respectively.
  • Detecting module 12 also comprises a mechanism 18, which cooperates with door 5 to move electric contact 16 mechanically from the work position to the rest position when door 5 is moved from the closed to the open position. More specifically, mechanism 18 is designed not to move electric contact 16 in any way when door 5 moves from the open to the closed position.
  • Detecting module 12 also comprises an electromagnetic device 19 which, when excited, generates a magnetic field to move electric contact 16 from the rest position, i.e. opening, to the work position, i.e. closing electric detecting branch 15.
  • electromagnetic device 19 may comprise a coil which receives an excitation signal SE to generate a magnetic field to move electric contact 16 from the rest to the work position.
  • Control module 13 comprises a microprocessor having a first input connected to the second terminal of electric detecting branch 15 to receive status signal ST; a second input receiving a priority enabling signal SA; a first output supplying control signal SCOM to electronic switch 11; and a second output supplying excitation signal SE to electromagnetic device 19.
  • control module 13 when signal ST indicates the hazard condition, control module 13 generates control signal SCOM which disables electronic switch 11; and, when signal ST indicates the safety condition, control module 13 generates control signal SCOM to enable electronic switch 11.
  • Priority enabling signal SA may be generated by a control interface 21 on casing 2, to allow user consent to start appliance 1 after a power cut.
  • control interface 21 comprises a button which is pressed by the user to supply priority enabling signal SA to the control module.
  • control module 13 receiving status signal ST indicating the safety condition, therefore generates control signal SCOM to enable the TRIAC and so allow the appliance to continue the wash cycle interrupted by the power cut.
  • mechanism 18 moves electric contact 16 from the work position to the rest position.
  • electromagnetic device 19 receiving no excitation signal from the control module, generates no magnetic field, so electric contact 16 remains in the rest position. Closure of door 5 produces no movement of electric contact 16, which therefore remains in the rest position, thus generating a status signal ST indicating the hazard condition.
  • control module 13 When power is restored, control module 13 acquires the hazard condition indicated in status signal ST, and generates control signal SCOM to keep electronic switch 11 disabled and so cut off power supply to electric equipment 7. In which case, control module 13 keeps the TRIAC and, hence, appliance 1 disabled, and remains on standby awaiting priority enabling signal SA from the user. The standby condition terminates when the user presses the button to generate priority enabling signal SA. More specifically, on receiving priority enabling signal SA, control module 13 enables the TRIAC to allow appliance 1 to start operating again, and at the same time supplies excitation signal SE to electromagnetic device 19 which moves electric contact 16 into the work position.
  • the electronic safety system 6 is configured to: detecting the hazard condition corresponding to said access door being opened during a black out, or a safety condition corresponding to said access door not being opened during said black out; and selectively disabling or enabling said electronic switching means upon detection of said hazard condition or said safety condition respectively.
  • electronic safety system 6 comprises detecting means 12 comprising an electric contact 16 movable between a work position and a rest position; mechanical means 18 which cooperate with the access door 5 to move the electric contact 16 from the work position to the rest position when the access door 5 is moved into open position; and electromagnetic means 19 which generate a magnetic field to move the electric contact 16 into work position.
  • the electronic control means 13 are configured to disable electronic switching means 11 when the electric contact 16 is in rest position, or enable electronic switching means 11 when the electric contact 16 is in work position.
  • the appliance 1 comprises interface means 21 on the casing 2 to allow a user to generate a priority enabling signal SA enabling operation of the electric household appliance 1.
  • electronic control means 13 Upon receiving the priority enabling signal (SA), electronic control means 13 switching electronic switching means 11 from off to on.
  • electronic control means 13 Upon receiving said priority enabling signal SA, electronic control means 13 command said electromagnetic means 19 to generate a magnetic field to move the electric contact 16 from said rest position to said work position.
  • mechanical means 18 are designed not to move the electric contact 16 when the access door 5 is moved from the open position to closed position.
  • the electronic switching means 11 comprise a TRIAC; electronic control means 13 comprise a microprocessor, whereas electromagnetic means 19 comprise an electric coil.
  • Electronic safety system 6 described above has the advantage of eliminating the hazard posed by the appliance starting up automatically after a power cut during which the appliance door has been opened.
  • Figures 3 and 4 show a second embodiment of the present invention, wherein a electronic safety system 30 is configured to detect a hazard condition caused by door 5 being opened during a blackout, and to discriminate between this and a "safety condition ", so as to automatically restart the appliance with no intervention on the part of the user.
  • safety system 30 is configured to determine opening or closing of door 5 during the blackout time interval ⁇ t; and determine a "hazard condition" and, at the same time, set appliance 1 to a restart standby status when at least one opening of door 5 during blackout time interval ⁇ t is determined.
  • electronic safety system 30 is also configured to determine a "hazard condition" and, at the same time set appliance 1 to a restart standby status if the following conditions are met : no opening of door 5 during blackout time interval ⁇ t is determined and, at the same time, the blackout time interval ⁇ t is greater than a predetermined safety time interval ⁇ l.
  • electronic safety system 30 is configured to determine a "safety condition" and set restart appliance 1 automatically, i.e. with no user assistance, from where operation was interrupted by the blackout, when no opening of the door during blackout time interval ⁇ t is determined.
  • the electronic safety system 30 is configured to determine a "safety condition" and set restart appliance 1 automatically, i.e. with no user assistance, from where operation was interrupted by the blackout, when the following conditions are met: no opening of the door during blackout time interval ⁇ t is determined and, at the same time, the determined blackout time interval ⁇ t is less than the predetermined safety time interval ⁇ 1.
  • FIGS 3 and 4 show an example embodiment of electronic safety system 30, which substantially comprises a capacitor 31; a circuit 32 connected to a line 36 having a predetermined low voltage V2 of preferably, though not necessarily, 12 V; an electric capacitor discharge circuit 33; a door switch 34 which is moved by door 5 between a closed position and an open position; and an high voltage electronic switch 35 which switches to off or on to respectively disconnect or connect internal electric equipments 7 of the appliance 1 to a high voltage power line 9 having a predetermined high voltage V1 of preferably, though not necessarily, about 230 V.
  • circuit 32 comprises a low voltage switch 39 which is movable, on the basis of a command signal SP, between a work position closing electric circuit 32 to set a terminal to low voltage V2, and a rest position opening electric circuit 32 to set the terminal to 0 V.
  • Electronic safety system 30 also comprises a sensing device 38, which measures voltage VS at sensing terminal 37 of capacitor 31 to discriminate, as a function of voltage VS, between a "hazard condition” caused by door 5 being opened during the blackout, and a "safety condition".
  • door switch 34 comprises three terminals, of which a first terminal 40 is connected to circuit 32 at voltage V2; a second terminal 41 is connected to a node 42 in turn connected to electric capacitor discharge circuit 33 and to sensing terminal 37 of capacitor 31 via a low leakage device 43; and a third terminal 44 is connected directly to sensing terminal 37 of capacitor 31.
  • closing door 5 switches door switch 34 to the closed position, in which first terminal 40 is connected to second terminal 41, thus connecting sensing terminal 37 to line 36 over main circuit 32.
  • opening door 5 switches door switch 34 to the open position, in which second terminal 41 is disconnected from power line 36 and connected to third terminal 44, thus connecting sensing terminal 37 directly to electric capacitor discharge circuit 33.
  • high voltage electronic switch 35 it may preferably comprise a relè configured to disconnect internal electric equipments 7 of the appliance 1 to a high voltage power line 9 when opening door 5 switches door switch 34 to the open position.
  • the electronic switch 35 connect or conversely maintain disconnected internal electric equipments 7 of the appliance 1 to the high voltage power line 9 on the basis of a control signal SP.
  • Capacitor 31 comprises sensing terminal 37 connected to node 42 via low leakage device 43; and a terminal 46 connected to a ground line 47.
  • Electric capacitor discharge circuit 33 comprises a door state sensing device 48 having an input terminal connected to node 42, and an output terminal that supplies a measurement signal having a electrical value (voltage or current) which is a function of the voltage at node 42.
  • Door state sensing device 48 may, for example, comprise an R-C electric circuit (not shown) for discharging the electric charge accumulated by capacitor 31; and an interface circuit (not shown) for generating the measurement signal as a function of the voltage at node 42.
  • Sensing device 38 comprises a capacitor charge sensing device 49, which has an input terminal connected to sensing terminal 37, and an output terminal that supplies a logic measurement signal having a first logic level when the voltage at sensing terminal 37 equals voltage V2, and a second logic level when the voltage at sensing terminal 37 equals voltage V3.
  • Sensing device 38 also comprises a processing unit 50, e.g. a microprocessor, having a terminal connected to the output terminal of door state sensing device 48 of electric capacitor discharge circuit 33 to receive the measurement signal; a terminal connected to the output terminal of capacitor charge sensing device 49 to receive the logic measurement signal; and a control terminal that supplies the control signal SP to the high voltage switch 35 and to low voltage switch 39.
  • a processing unit 50 e.g. a microprocessor
  • electronic safety system 30 preferably, though not necessarily, also comprises a test circuit 51, which cooperates with processing unit 50 to determine any malfunctioning of capacitor charge sensing device 49.
  • test circuit 51 is connected parallel to capacitor 31, and so has a terminal connected to sensing terminal 37 of capacitor 31; a terminal connected to ground line 47; and a terminal connected to processing unit 50.
  • processing unit 50 opens low voltage switch 39 (block 110). A this step, low voltage switch 39 cause high voltage switch 35 to open.
  • electronic safety system 30 operates in three modes, depending on whether door 5 is opened/closed, and the duration of blackout time interval ⁇ t.
  • a first operating mode applies to door 5 being opened during the blackout
  • a second operating mode applies to door 5 not being opened, and to electric power being restored within a time interval ⁇ t equal to or less than the predetermined safety time interval ⁇ 1
  • a third operating mode applies to door 5 not being opened, and to the blackout terminating within a time interval ⁇ t greater than the predetermined safety time interval ⁇ 1.
  • door 5 switches door switch 34 to open (block 150), thus connecting sensing terminal 37 of capacitor 31 to electric capacitor discharge circuit 33.
  • processing unit 50 activates a check procedure to determine the charge of capacitor 31 and so determine whether or not door 5 was opened during the blackout.
  • processing unit 50 determines a hazard condition (block 190) and sets appliance 1 to a standby state (block 210), in which appliance 1 is not restarted at the end of the blackout. More in detail at this step processing unit 50 generates the command signal SP which maintain open the low voltage switch 39 and high voltage switch 35.
  • the standby state is interrupted by a user command signal SA (YES output of block 210).
  • processing unit 50 On receiving command signal SA, processing unit 50 generate the command signal SP to close low voltage switch 39 and high voltage switch 35 so that the appliance 1 restarts from the operating stage, e.g. the spin stage, interrupted by the blackout (block 220).
  • processing unit 50 before closing switches 35 and 39 and activating the operating cycle, waits for a command signal SA generated by the user pressing a button 31 on appliance 1.
  • the second operating mode applies to the blackout terminating within a time interval equal to or less than the safety time interval ⁇ 1, and to door 5 not being opened.
  • door switch 34 remains closed (block 240), and sensing terminal 37 remains connected to node 42 via low leakage device 43.
  • Capacitor 31 being discharged by capacitor discharge circuit 33 via low leakage device 43, discharge is delayed in controlled manner by low leakage device 43 (block 250).
  • safety time interval ⁇ 1 is calculated so that voltage VS at sensing terminal 37 remains at a substantially voltage V2 throughout safety time interval ⁇ 1 (block 260).
  • the electronic safety system 30 can comprise a test circuit 51 for determining malfunctioning of said capacitor charge sensing device 49; said electronic safety system 30 being configured to set the electric household appliance 1 to a restart standby state when said test circuit 51 determines a malfunction of said capacitor charge sensing device 49.
  • processing unit 50 may be configured to implement, via test circuit 51, a check procedure to determine malfunctioning of capacitor charge sensing device 33 (block 300).
  • processing unit 50 On detecting malfunctioning of capacitor charge sensing device 33 (NO output of block 300), processing unit 50 sets appliance 1 to a standby state (block 210), in which appliance 1 is not restarted at the end of the blackout.
  • the standby state is interrupted by a user command signal SA (YES output of block 210).
  • processing unit 50 closes switches 35 and 39 by command signal SP so that appliance 1 restarts from the operating stage, e.g. the spin stage, interrupted by the blackout (block 220).
  • processing unit 50 automatically closes high voltage switch 35 and low voltage switch 39 so that the cycle is restarted from the stage interrupted by the blackout.
  • the third operating mode applies to the blackout lasting longer than the safety time interval ⁇ t> ⁇ 1, and to door 5 not being opened.
  • door switch 34 remains closed (block 320), sensing terminal 37 remains connected to node 42 via low leakage device 43. At this time, high voltage switch 35 is opened.
  • processing unit 50 On detecting a hazard condition, processing unit 50 sets appliance 1 to a standby state pending user command signal SA (block 390). In detail processing unit 50 generates command signal SP that maintains open high voltage switch 35.
  • processing unit 50 On receiving command signal SA (YES output of block 390), processing unit 50 generates command signal SP that closes high voltage switch 35 so that appliance 1 restarts from the stage interrupted by the blackout (block 400).
  • Figure 6 shows a flow chart of the check procedure operations performed by electronic safety system 30 to determine malfunctioning of capacitor charge sensing device 33.
  • test circuit 51 is assumed to substantially comprise an electronic switch, e.g. a transistor, controllable by processing unit 50 to discharge capacitor 31 on command.
  • an electronic switch e.g. a transistor
  • Processing unit 50 opens the electronic switch and closes low voltage switch 39 (block 500) to charge capacitor 31 (block 510), and, once the capacitor 31 is charged, determines by means of capacitor charge sensing device 49 (block 520) whether voltage VS at sensing terminal 37 equals voltage V2 (block 530).
  • processing unit 50 determines malfunctioning of capacitor charge sensing device 49 (block 540) and the procedure is terminated; conversely (YES output of block 530), processing unit 50 opens low voltage switch 39 and closes the high voltage switch 35, which completely discharges capacitor 31 (block 550).
  • processing unit 50 determines by means of capacitor charge sensing device 49 whether voltage VS at sensing terminal 37 equals voltage V3 (block 560). If it does not (NO output of block 560), processing unit 50 determines malfunctioning of capacitor charge sensing device 49 (block 540); conversely (YES output of block 560), correct operation of capacitor charge sensing device 49 is determined
  • the electronic safety system described has the major advantage, on the one hand, of guaranteeing a high degree of safety in the event of a blackout, and, on the other, of being activated automatically when no hazard conditions are detected at the end of the blackout.
  • the Figure 7 embodiment relates to an electronic safety system 60 similar to electronic safety system 30, and the component parts of which are indicated, where possible, using the same reference numbers as for corresponding parts of system 60.
  • Electronic safety system 60 differs from electronic safety system 30 by test circuit 51 being located between terminal 46 of capacitor 31 and ground line 47, and having a control terminal connected to processing unit 50.
  • processing unit 50 determines by means of capacitor charge sensing device 49 whether voltage VS at sensing terminal 11 equals voltage V3 (block 660).
  • processing unit 50 determines malfunctioning of capacitor charge sensing device 49; conversely (YES output of block 660), correct operation of capacitor charge sensing device 49 is determined (block 670).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Electric Ovens (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Safety Devices In Control Systems (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (15)

  1. Appareil électroménager (1) comprenant un logement (2) ; un tambour à linge (3) logé à l'intérieur du logement (2) et faisant face à une ouverture (4) formée dans ledit logement (2) ; une porte d'accès (5) montée sur le logement (2) pour se déplacer entre une position ouverte et une position fermée ouvrant et fermant ladite ouverture (4), respectivement ; des moyens de commutation électroniques (35) qui s'ouvrent et se ferment pour respectivement déconnecter ou connecter l'appareil électroménager (1) de ou à une ligne électrique (9) ;
    ledit appareil électroménager (1) étant caractérisé en ce qu'il comprend un système de sécurité électronique (6) (30) (60) configuré pour :
    - détecter une condition de danger correspondant à l'ouverture de ladite porte d'accès (5) pendant une coupure, ou une condition de sécurité correspondant à la non ouverture de ladite porte d'accès (5) pendant ladite coupure ; et
    - désactiver ou activer de manière sélective lesdits moyens de commutation électroniques (35) lors de la détection de ladite condition de danger ou de ladite condition de sécurité, respectivement.
  2. Appareil électroménager selon la revendication 1, dans lequel ledit système de sécurité électronique (30) est configuré pour déterminer l'ouverture ou la fermeture de ladite porte (5) pendant un intervalle de temps de coupure (Δt) ; à la fin de la coupure, ledit système de sécurité électronique (30) (60) étant configuré pour redémarrer ledit appareil électroménager (1) automatiquement à partir de l'étape de fonctionnement interrompue par la coupure, lorsque aucune ouverture de ladite porte (5) pendant ladite coupure n'est déterminée.
  3. Appareil électroménager selon la revendication 1 ou 2, dans lequel ledit système de sécurité électronique (30) est configuré pour déterminer l'ouverture ou la fermeture de ladite porte (5) pendant un intervalle de temps de coupure (Δt) ; à la fin de la coupure, ledit système de sécurité électronique (30) (60) étant configuré pour redémarrer ledit appareil électroménager (1) automatiquement à partir de l'étape de fonctionnement interrompue par la coupure, lorsque les conditions suivantes s'appliquent :
    - aucune ouverture de ladite porte (5) pendant ladite coupure n'est déterminée et, en même temps,
    - l'intervalle de temps de coupure (Δt) est sensiblement inférieur à un intervalle de temps de sécurité prédéterminé (Δ1).
  4. Appareil électroménager selon la revendication 2, dans lequel ledit système de sécurité électronique (30) (60) est configuré pour mettre l'appareil électroménager (1) dans un état d'attente de redémarrage, lorsqu'au moins une ouverture de la porte pendant ladite coupure est déterminée.
  5. Appareil électroménager selon la revendication 3, dans lequel ledit système de sécurité électronique (30) (60) est configuré pour mettre l'appareil électroménager (1) dans un état d'attente de redémarrage lorsque aucune ouverture de ladite porte (5) pendant l'intervalle de temps de coupure (Δt) n'est déterminée et, en même temps, l'intervalle de temps de coupure (Δt) est supérieur audit intervalle de temps de sécurité prédéterminé (Δ1).
  6. Appareil électroménager selon l'une quelconque des revendications précédentes, dans lequel ledit système de sécurité électronique (30) (60) comprend :
    au moins un condensateur (31) et un circuit de décharge de condensateur électrique (33) configuré pour décharger ledit condensateur (31) si la porte est ouverte pendant ledit intervalle de temps de coupure (Δt).
  7. Appareil électroménager selon la revendication 6, dans lequel ledit système de sécurité électronique (30) (60) comprend : des moyens de commutation de porte (34) qui commutent entre une première position de commutateur connectant une première borne (37) dudit condensateur (31) à une ligne électrique (36), ainsi le condensateur (31) est chargé et la tension à la première borne (37) atteint une première valeur prédéterminée (V2), et une deuxième position de commutateur connectant ladite première borne (37) dudit condensateur (31) audit circuit de décharge de condensateur électrique (33), de manière à décharger le condensateur (31) et fixer la tension à la première borne (37) à une deuxième valeur prédéterminée (V3) ;
    ladite porte (5) étant conçue de sorte que son ouverture/fermeture commute lesdits moyens de commutation de porte (33) entre lesdites première et deuxième positions ;
    et ledit système de sécurité électronique (30) (60) comprenant également des moyens de détection (49, 50) pour déterminer l'ouverture de ladite porte (5) en fonction de la première (V2) ou de la deuxième (V3) valeur de tension mesurée à la première borne (37) dudit condensateur (31).
  8. Appareil électroménager selon la revendication 7, et comprenant un commutateur principal (39) interposé entre lesdits moyens de commutation de porte (34) et ladite ligne électrique (36) ;
    ledit système de sécurité électronique (30) (60) étant configuré pour ouvrir ledit commutateur principal (39) lorsque la coupure se produit, et comprenant des moyens de faible fuite (43) connectés à ladite première borne (37) dudit condensateur (31) et conçus pour temporiser la décharge dudit condensateur (31) lorsque ledit commutateur principal (39) est ouvert et ladite porte (5) reste fermée pendant ledit intervalle de temps de coupure (Δt).
  9. Appareil électroménager selon la revendication 8, dans lequel ledit commutateur principal (39) est un commutateur basse tension et ladite ligne électrique (36) est à une basse tension d'environ 12 V.
  10. Appareil électroménager selon les revendications 7, 8 et 9, dans lequel lesdits moyens de détection (38) comprennent une unité de traitement (50) ; et un dispositif de détection de charge de condensateur (49) connecté à ladite première borne (37) pour mesurer la tension (VS) à ladite première borne (37), et configuré pour alimenter ladite unité de traitement (50) avec un signal de mesure ayant un premier ou un deuxième niveau lorsque la tension (VS) mesurée à ladite première borne (37) a ladite première (V2) ou ladite deuxième (V3) valeur de tension, respectivement.
  11. Appareil électroménager selon la revendication 10, dans lequel ledit circuit de décharge de condensateur électrique (33) est connecté à ladite unité de traitement (50) pour appliquer à celle-ci un signal de mesure, dont la tension est associée à l'ouverture/fermeture de ladite porte (5).
  12. Appareil électroménager selon la revendication 1, dans lequel lesdits moyens de détection (12) comprennent un contact électrique (16) mobile entre une position de travail et une position de repos ; des moyens mécaniques (18) qui coopèrent avec ladite porte d'accès (5) pour déplacer ledit contact électrique (16) de ladite position de travail vers ladite position de repos lorsque la porte d'accès (5) est déplacée dans ladite position ouverte ; et des moyens électromagnétiques (19) qui génèrent un champ magnétique pour déplacer ledit contact électrique (16) dans ladite position de travail.
  13. Appareil électroménager selon la revendication 12, dans lequel lesdits moyens de commande électroniques (13) désactivent lesdits moyens de commutation électroniques (11) lorsque ledit contact électrique (16) est dans ladite position de repos, ou activent lesdits moyens de commutation électroniques (11) lorsque ledit contact électrique (16) est dans ladite position de travail.
  14. Appareil électroménager selon la revendication 13, et comprenant des moyens formant interface (21) pour permettre à un utilisateur de générer un signal de moyens de validation de priorité (SA) autorisant le fonctionnement dudit appareil électroménager ; lors de la réception dudit signal de validation de priorité (SA), lesdits moyens de commande électroniques (13) commutant lesdits moyens de commutation électroniques (11) d'ouverts à fermés, de préférence lors de la réception dudit signal de validation de priorité (SA), lesdits moyens de commande électroniques (13) commandent lesdits moyens électromagnétiques (19) pour générer un champ magnétique pour déplacer ledit contact électrique (16) de ladite position de repos vers ladite position de travail.
  15. Appareil électroménager selon l'une quelconque des revendications 12 à 14, dans lequel les moyens mécaniques (18) sont conçus pour ne pas déplacer ledit contact électrique (16) lorsque ladite porte d'accès (5) est déplacée de ladite position ouverte vers ladite position fermée.
EP09006501A 2008-05-22 2009-05-14 Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès Active EP2123820B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09006501A EP2123820B1 (fr) 2008-05-22 2009-05-14 Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès
PL09006501T PL2123820T3 (pl) 2008-05-22 2009-05-14 Elektroniczny układ zabezpieczający do elektrycznego urządzenia gospodarstwa domowego z drzwiczkami dostępowymi
RU2009119294/12A RU2497989C2 (ru) 2008-05-22 2009-05-21 Электронная предохранительная система для электрического бытового прибора с дверцей

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08156770A EP2123819A1 (fr) 2008-05-22 2008-05-22 Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès
EP09006501A EP2123820B1 (fr) 2008-05-22 2009-05-14 Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès

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EP2123820A1 EP2123820A1 (fr) 2009-11-25
EP2123820B1 true EP2123820B1 (fr) 2011-08-24

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EP09006501A Active EP2123820B1 (fr) 2008-05-22 2009-05-14 Dispositif de contrôle électronique pour appareil électroménager doté d'une porte d'accès

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EP (2) EP2123819A1 (fr)
AT (1) ATE521748T1 (fr)
ES (1) ES2372659T3 (fr)
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Publication number Priority date Publication date Assignee Title
EP2386675B1 (fr) 2010-05-14 2014-07-16 Electrolux Home Products Corporation N.V. Circuit de chauffage avec surveillance de l'agencement pour appareil domestique
WO2015000530A1 (fr) * 2013-07-05 2015-01-08 Arcelik Anonim Sirketi Appareil de traitement du linge comportant une sécurité de porte améliorée
CN113811648B (zh) * 2019-05-13 2024-01-02 伊莱克斯家用电器股份公司 衣物处理机以及用于控制这种衣物处理机的方法

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US4056891A (en) * 1975-05-23 1977-11-08 Billy R. Rayburn Sequential switching device
JPS5743135A (en) * 1980-08-29 1982-03-11 Matsushita Electric Ind Co Ltd High frequency heating device
US5276284A (en) * 1992-02-28 1994-01-04 Square D Company Power switch disabler
IT1309106B1 (it) * 1999-10-13 2002-01-16 Merloni Elettrodomestici Spa Utenza elettrica domestica a controllo elettronico e relativo sistemadi controllo e programmazione.
EP1340870B1 (fr) * 2002-02-27 2009-11-18 emz-Hanauer GmbH & Co. KGaA Ensemble avec actionneur à métal doué de mémoire pour verrouillage de portes d'appareils domestique
US6743986B2 (en) * 2002-04-23 2004-06-01 Elektromanufaktur Zangenstein Hanauer Gmbh & Co. Kgaa Door lock
ES2277231T3 (es) * 2004-07-13 2007-07-01 C.R.F. Societa Consortile Per Azioni Aparato electrodomestico, en particular, maquina para lavar y/o secar un dispositivo de enclavamiento/liberacion de la puerta que se puede accionar electricamente.
SI21888A (sl) * 2004-10-06 2006-04-30 Itw Metalflex D.O.O. Tolmin Varnostna zapora vrat gospodinjskih aparatov
ITTO20060736A1 (it) * 2006-10-13 2008-04-14 Itw Metalflex Druzba Za Proizvodnjo Delov Za ... Dispositivo di bloccaggio per una porta di un elettrodomestico, in particolare un oblo' di una lavatrice

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Publication number Publication date
ES2372659T3 (es) 2012-01-25
RU2009119294A (ru) 2010-11-27
ATE521748T1 (de) 2011-09-15
PL2123820T3 (pl) 2012-01-31
EP2123819A1 (fr) 2009-11-25
RU2497989C2 (ru) 2013-11-10
EP2123820A1 (fr) 2009-11-25

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