EP2373839B1 - Haushaltsgerät mit automatischer abschaltung - Google Patents

Haushaltsgerät mit automatischer abschaltung Download PDF

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Publication number
EP2373839B1
EP2373839B1 EP20090760826 EP09760826A EP2373839B1 EP 2373839 B1 EP2373839 B1 EP 2373839B1 EP 20090760826 EP20090760826 EP 20090760826 EP 09760826 A EP09760826 A EP 09760826A EP 2373839 B1 EP2373839 B1 EP 2373839B1
Authority
EP
European Patent Office
Prior art keywords
switch
control device
electrical
switching state
circuit arrangement
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
EP20090760826
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2373839A1 (de
Inventor
Thomas Koch
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL09760826T priority Critical patent/PL2373839T3/pl
Publication of EP2373839A1 publication Critical patent/EP2373839A1/de
Application granted granted Critical
Publication of EP2373839B1 publication Critical patent/EP2373839B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0047—Energy or water consumption, e.g. by saving energy or water
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/46—Devices for the automatic control of the different phases of cleaning ; Controlling devices
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/20—Time, e.g. elapsed operating time
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/32—Stopping or disabling machine operation, including disconnecting the machine from a network, e.g. from an electrical power supply
    • 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
    • D06F2105/62—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
    • D06F34/10—Power supply arrangements, e.g. stand-by circuits
    • 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 relates to a circuit arrangement for operating a household appliance; the circuit arrangement comprises a control device for executing programs of the household appliance, a connection via which the control device can be supplied with electrical energy from a supply network, a first electrical switch, via which the control device can be coupled to the connection, an operating unit connected to the connection, wherein the first electrical switch is switchable from an open switching state to a closed switching state in which the first switch is electrically conductive, depending on an actuation of the operating unit, and a second electrical switch which is separate from the first switch and via which the control device can be coupled to the connection is, wherein the control means is adapted, as soon as the first switch is switched to the closed switching state, to switch the second switch from an open switching state to a closed switching state in which the control device is coupled via the second switch to the terminal.
  • the invention further relates to a method for operating a control device of a household appliance, with which programs of the household appliance are executed, wherein the control device is supplied via a terminal of the circuit arrangement of a supply network with electrical energy when a first electrical switch is switched to a closed switching state is, and wherein a separate from the first switch second electrical switch, via which the control device is coupled to the terminal is switched by means of the control device depending on demand in a closed switching state as soon as the first switch is switched to the closed switching state.
  • Today's household appliances such as in particular washing machines and dryers, are known to be equipped with a program selector, which is usually provided as a knob rotatably mounted on a control panel. In the present case should be achieved will turn off the home appliances after completing a previously selected program.
  • a program selector which is usually provided as a knob rotatably mounted on a control panel. In the present case should be achieved will turn off the home appliances after completing a previously selected program.
  • a home appliance which has a power switch, via which the household appliance can be connected to a power supply or disconnected from the power supply.
  • the power switch can be operated by an operator.
  • the household appliance further has a control device which opens the power switch after completion of a program of the household appliance and thus separates the household appliance from the power supply.
  • a power supply can be set by applying a switching signal at its activation input in an active mode.
  • the switching signal is transmitted via a switch, which is provided for example as a program selector, to the power supply.
  • the publication DE 103 19 132 A1 describes an operating device for selecting an operating program of a household appliance.
  • the operating device comprises a rotary knob, which is connected via a shaft with a magnetic Hall sensor.
  • the shaft is mounted both rotatable and axially displaceable. Turn the knob to change the magnetic field of the Hall sensor.
  • An evaluation unit receives signals from the Hall sensor. Depending on the signals of the Hall sensor, the evaluation unit concludes on the operating program selected by an operator of the household appliance.
  • An axial displacement of the shaft causes a change in the magnetic field of the Hall sensor.
  • the axial displacement of the shaft and the associated change in the magnetic field can be assigned an additional function, namely, for example, the function "pause” or "stop". In other words, an operator can select an additional function of the household appliance by pulling or pressing the rotary knob.
  • the present invention has for its object to reduce the power consumption of a household appliance.
  • a household appliance is a device that is used for household management. This may in particular be a large household appliance, which is designed for automatic execution of programs, such as a washing machine, a tumble dryer, a dishwasher or a cooking appliance.
  • a circuit arrangement according to the invention is designed for operating a household appliance.
  • the circuit arrangement comprises a control device for executing programs of the household appliance, a connection via which the control device can be supplied with electrical energy from a supply network, a first electrical switch via which the control device can be coupled to the connection, a control unit connected to the connection, wherein the first electrical switch is switchable from an open switching state to a closed switching state in which the first switch is electrically conductive as a function of an actuation of the operating unit, and a second electrical switch separate from the first switch, via which the control device can be coupled to the connection is, wherein the control means is adapted, as soon as the first switch is switched to the closed switching state, to switch the second switch from an open switching state to a closed switching state in which the control device is coupled via the second switch to the terminal.
  • the operating unit is designed as a program selector for selecting a program of the household appliance, which has a stationary contact element and a movable contact element which is immovably connected to an actuatable actuator by an operator and electrically coupled to the stationary contact element except in a starting position of the actuating element.
  • the control device of the household appliance depending on the operation of a control unit - initially via a first switch, which in particular is closed only for a predetermined period of time, is put into operation, and that the control device itself closes a second switch after commissioning and thus itself supplied with electrical energy.
  • the control device after completion of a previously selected program open the second switch and thus can turn off automatically.
  • the energy consumption of the household appliance is reduced overall, without an existing one.
  • the circuit arrangement according to the invention thus comes without an additional, operable by an operator power switch and without a bistable relay, as used in the prior art for automatic shutdown.
  • the operating unit is designed as a program selector for selecting a program of the household appliance.
  • the program selector comprises a stationary contact element, in particular a conductor track, and a movable contact element.
  • the movable contact element is in this case in a manner fixed against movement in particular with an actuating element which can be actuated by an operator and is electrically coupled to the stationary contact element except in an initial position of the actuating element.
  • the program selector is provided as a program selector rotatably mounted on a control panel of the household appliance, ie a rotary knob.
  • the stationary contact element can be provided as a substantially annular, an interruption having conductor track on which the movable contact element slides during rotation of the actuating element.
  • the actuator is in the starting position, the movable contact element is preferably arranged over the interruption of the conductor track and thus electrically separated from this.
  • the control device comprises a main power supply and a control unit, which is fed via the main power supply with electrical energy.
  • the control unit is preferably designed to execute the stored in a memory programs of the household appliance.
  • the control unit for controlling an electric drive motor, in particular via a semiconductor switch, be formed.
  • the household appliance is preferably designed as a household appliance for the care of laundry items, which has a driven by a drive motor drum for receiving the laundry items.
  • the term "household appliance” in particular fall into a washing machine, a dryer and a washer-dryer.
  • control device is preferably adapted to switch after completion of a previously selected program of the household appliance, the second switch in the open switching state. This can be achieved in a technically simple manner when the second switch is designed, for example, as a relay.
  • a power supply unit in particular a capacitor power supply
  • the power supply in particular comprises a capacitor connected to reference potential, to which the available for driving the first switch electrical voltage can be tapped, and a voltage limiting diode, in particular a Zener diode, by means of which the voltage applied to the capacitor is limited.
  • the power supply can have a voltage divider. It can be provided that the power supply has a rectifier, in particular with a diode, by means of which the mains voltage is rectified. The rectified voltage may then be provided to drive the first switch on the capacitor.
  • the power supply is thus coupled in particular via the operating unit with the connection of the circuit arrangement, ie with a supply network and may then provide a DC voltage to drive the first switch.
  • a reliable control of the first switch can be achieved with an electrical pulse.
  • a control and monitoring unit or a pulse generator is coupled to the power supply and the first switch, which is designed to monitor the voltage provided by the power supply and to drive the first switch depending on the current value of the electrical voltage.
  • the operation of the power supply and the control and monitoring unit for example, look like that the control and monitoring unit only triggers an electrical pulse to the first switch when the capacitor of the power supply is charged or the voltage available to the capacitor a pre-definable Value achieved.
  • the first switch is then switchable to the closed switching state for the duration of the electrical pulse.
  • the control device preferably closes the second switch and then supplies itself with electrical voltage.
  • the control and monitoring unit is preferably provided as an integrated circuit (microchip) and in particular comprises one or more switches, in particular transistors, which serve to trigger the electrical pulse to the first switch.
  • the control and monitoring unit it is possible to control the first switch as needed and reliably after actuation of the operating unit.
  • the control and monitoring unit preferably has a reset input, via which a triggering of an electrical pulse causing reset signal is transmitted to the control and monitoring unit, which can be generated by operating the control unit.
  • the reset input of the control and monitoring unit with a further movable contact element is electrically coupled, which is immovably connected to the actuating element of the operating unit.
  • a plurality of stationary contact elements spaced apart from one another can be provided, of which in each case a contact element is contacted with the movable contact element when the operating unit is actuated, in particular when the actuating element of the program selector is turned. If the plurality of stationary contact elements are coupled to a reference potential, in particular to ground, the reset input of the control and monitoring unit is located at the reference potential for a short period of time when adjusting the operating unit. In other words, if the operating unit is actuated, a reset signal (in the form of a low signal, that is to say ground) is transmitted to the reset input of the control and monitoring unit, which causes the output of the electrical pulse to the first switch.
  • the first switch is designed as a semiconductor switch, in particular as an OptoMOS relay, or as a relay.
  • the period of time for which the first switch is switched conductive as required - depending on the response time of the control device when closing the second switch - set or predefined.
  • a third electrical switch is connected in parallel to the second switch, via which the control device can be coupled to the terminal, wherein the control device is designed to mechanically lock a door of the household appliance, the third switch in a closed switching state to switch.
  • the control device is designed to mechanically lock a door of the household appliance, the third switch in a closed switching state to switch.
  • a household appliance in particular for the care of laundry items, is provided, which comprises a circuit arrangement according to the invention or a preferred embodiment thereof.
  • a method according to the invention is designed for operating a control device of a household appliance with which programs of the household appliance are executed.
  • the control device is supplied via a terminal of the circuit arrangement of a supply network with electrical energy when a first electrical switch is switched to a closed switching state, and is a separate from the first switch second electrical switch, via which the control device coupled to the terminal is switched by means of the control device demand-dependent in a closed switching state, as soon as the first switch is switched to the closed switching state.
  • a control unit connected to the terminal wherein the first electrical switch is switched depending on an operation of the operating unit, and the operating unit is designed as a program selector for selecting a program of the household appliance, which has a stationary contact element and a movable contact element with an actuating element operable by an operator is immovably connected and is electrically coupled in the actuation with the stationary contact element outside a starting position of the actuating element.
  • Fig. 1 shows a schematic representation of a circuit arrangement 1, which is used for operating a household appliance, in the example of a washing machine.
  • the circuit arrangement 1 has a control device 2, which - as in Fig. 1 schematically indicated - a main power supply 3 and a powered by the main power supply 3 control unit 4 has.
  • the control unit 4 is used in the example for controlling a drive motor, with which a drum for receiving laundry is driven.
  • the drive motor can be fed in, for example via a triac, which in turn can be controlled by means of the control unit 4.
  • the control unit 4 may further be designed to control other electrical consumers, such as in particular of pumps, heaters and the like.
  • the control unit 4 is thus designed to execute programs of the washing machine, which are stored in the control device 2, for example in a memory.
  • the circuitry 1 For selecting a program by an operator, the circuitry 1 comprises a program selector 5 having an operator-operable actuator (not shown in the figures).
  • the program selector 5 has a stationary contact element 6, which is here as an in the Substantial annular track is executed with an interruption 7.
  • a movable contact element 8 With the rotatable actuating element, a movable contact element 8 is rotatably connected, which slides on the conductor track 6 except in a starting position of the actuating element. In the initial position of the actuating element, the movable contact element 8 is arranged above the interruption 7 of the conductor track 6, so that no electrical connection between the movable contact element 8 and the conductor track 6 is given. If the actuating element is moved from the starting position into a different position from a plurality of different positions, then the movable contact element 8 is electrically coupled to the conductor track 6.
  • the circuit arrangement 1 can be electrically coupled to a supply network via a connection 9 (phase conductor), i. the circuit arrangement 1, more precisely the control device 2, can be supplied with electrical energy via the connection 9.
  • the control device 2 via three separate electrical switch, a first electrical switch 10, a second electrical switch 11 and a third electrical switch 12, with the terminal 9, ie with the supply network, coupled.
  • the first switch 10 is controlled by means of a program selector 5 having drive circuit 13.
  • the first switch 10 in the in Fig. 1 illustrated first embodiment provided as a relay. If electrical current flows through a control element 14 of the first switch 10, then the first switch 10 is closed. If no current flows via the control element 14, then the first switch 10 is open.
  • the control element 14 may be formed as a coil.
  • the drive circuit 13 has a capacitor power supply 15, which is coupled on the one hand to the track 6 of the program selector 5 and on the other hand via a pole 16 to a control and monitoring unit 17.
  • the capacitor power supply 15 comprises a voltage divider 18 including a first and a second ohmic resistor 19, 20.
  • the second ohmic resistor 20 is connected to ground 21.
  • the voltage divider 18 is a rectifier diode 22 downstream, by means of which the mains voltage is rectified.
  • the capacitor power supply 15 further comprises a pole 16 with Mass 21 coupling capacitor 23, to which an electrical voltage U C for the first switch 10 can be provided.
  • the voltage U C is limited by means of a Zener diode 24 which couples the pole 16 to ground 21.
  • the voltage U C is, for example, 3V or 5V when the capacitor 23 is charged.
  • the voltage U C applied to the capacitor 23 is monitored by means of the control and monitoring unit 17.
  • the pole 16 is coupled to a monitoring input 25 of the control and monitoring unit 17.
  • the control and monitoring unit 17 can detect whether the voltage U C has reached a predeterminable value V CC , that is, whether the capacitor 23 - when the actuator of the program selector has rotated from the starting position - has charged.
  • the control element 14 of the first switch 10 is coupled, on the one hand, to the pole 16, to which the voltage U C is provided, and, on the other hand, to a connection 26 of the control and monitoring unit 17.
  • the control and monitoring unit 17 now has the task when the voltage U C has reached the predeterminable value V CC , for example 3 V or 5 V, to switch the control element 14 to ground 21 so that current flows through the control element 14.
  • the control and monitoring unit 17 is connected to ground 21 and comprises, for example, a switch, in particular a transistor, via which the control element 14 can be coupled to ground 21.
  • the control and monitoring unit 17 thus serves to cause current pulses are output to the control element 14 to close the first switch 10. This can only take place when the capacitor 23 has charged or the voltage U C has reached the predeterminable value V CC .
  • the second electrical switch 11 is provided in the present example as a simple relay.
  • the second switch 11 can be controlled by means of the control device 2 via a control element 27.
  • the control element 27 can be provided here as a coil. If electrical current flows through the control element 27, then the second switch 11 is closed. This current flow can be effected by the control device 2.
  • the third electrical switch 12 is in the present example by means of the control device 2 simultaneously with locking a door of the household appliance closed.
  • the third switch 12 remains closed until the door is mechanically unlocked after completion of a previously selected program of the household appliance. If a power failure occurs on the part of the supply network, then the control device 2 is supplied with electrical energy after the voltage has returned via the third switch 12. In this way, it is possible to end a previously selected and started program of the household appliance even after a power failure.
  • the operation of the circuit arrangement 1 according to Fig. 1 explained in more detail. If the actuating element of the program selector 5 is rotated from the starting position, then an electrical connection between the movable contact element 8 and the conductor track 6 and thus between the capacitor power supply 15 and the terminal 9 is produced.
  • the control and monitoring unit 17 now monitors the voltage applied to the capacitor 23 U C. When the voltage U C reaches the predeterminable value V CC or the capacitor 23 charges up completely, the control and monitoring unit 17 establishes an electrical connection between the control element 14 of the first switch 10 and the ground 21. Now flows over the control element 14 current, and for the duration of a pulse, for example, for the period of about 3s. For this period of time, the first switch 10 is in the closed state, ie it is electrically conductive.
  • the control device 2 is coupled via the first switch 10 to the terminal 9 of the circuit arrangement 1 and fed with electrical energy from the supply network. Now the control device 2 can switch the second electric switch 11 itself into the closed switching state; this by applying the control 27 with power.
  • the control device 2 closes the second switch 11 during the time duration of the triggered to the first switch 10 pulse, d. H. during the three seconds, that is, when the first switch 10 remains closed. If the three seconds, ie the duration of the current pulse delivered to the control element 14, have expired, the first switch 10 opens. The second switch 11 remains closed for the duration of the previously selected program.
  • control device 2 switches the second switch 11 into the open switching state. This happens at the time the program exits. In this way will ensures that the control device 2 no longer receives active current after completion of the program. There is thus a total of the energy consumption of the household appliance is reduced.
  • the circuit arrangement 1 is according to a second embodiment of the invention in Fig. 2 played.
  • the circuit arrangement 1 according to the second example essentially corresponds to that according to the first example, so that only the differences are explained below.
  • the first switch 10 is provided as an OptoMOS relay.
  • the first switch 10 on the primary side a light emitting diode (LED), which drives a secondary side arranged MOSFET transistor.
  • a wear-free switch 10 is provided.
  • control and monitoring unit 17 comprises a reset input 28, via which the control and monitoring unit 17, a reset signal 29 can be supplied, which causes the outputting of a current pulse to the first switch 10 and thus causes the same causes or effects.
  • the pulse to the first switch 10 is triggered when the reset input 28 is coupled to ground 21, that is, a low signal is applied.
  • a second stationary and substantially annular strip conductor 30 is provided with a plurality of contact elements 31 spaced apart from one another in the circumferential direction. These contact elements 31 are electrically coupled to each other via the conductor 30 and are at ground potential 21. With the actuating element of the program selector 5 another movable contact element 32 is rotatably connected, which is decoupled or separated in the respective positions of the actuating element of the stationary contact elements 31.
  • the movable contact element 32 Only when rotating the actuating element, the movable contact element 32 first touches a stationary contact element 31, to then reach a further position of the actuating element of this stationary contact element 31 to solve.
  • the reset input 28 of the control and monitoring unit 17 during rotation of the actuator briefly to ground 21, ie the reset signal 29 is evaluated with regard to the triggering of a pulse to the first switch 10. If it has been determined via the monitoring input 25 that the capacitor 23 is charged, a current pulse is output to the first switch 10 after rotating the actuating element by at least one position. The control device 2 can thus be put into operation even after completion of a program.
  • the power supply 15 includes the drive circuit 13, as in Fig. 2 is shown according to the second embodiment, in part other components than the power supply 15 according to Fig. 1 However, the operation of the power supply 15 remains the same in the second embodiment. So is in Fig. 2 For example, a capacitor between the conductor 6 and the diode 22 connected, which in Fig. 1 is connected between the terminal 9 and the program selector 5. It is also in Fig. 2 - unlike in Fig. 1 the first switch 10 is switched between the program selector 5 and the control device 2 while in Fig. 1 is connected directly between the terminal 9 and the control device 2. The trained as OptoMOS relay first switch 10 according to the second embodiment is thus completely decoupled from the mains voltage in the initial position of the program selector.
  • Fig. 3 now waveforms of signals are explained, as they occur at respective inputs 25, 26, 28 of the control and monitoring unit 17.
  • a curve 33 of the voltage applied to the capacitor 23 U C is shown, as a function of the time applied to the x-axis time t.
  • a time course 34 of the output to the first switch 10 that is represented at the terminal 26 current pulses.
  • poses Fig. 3 in its lower part a time course 35 of the reset signal 29, which occurs at the reset input 28.
  • the voltage U C begins to increase at a time t 0 . This is monitored by the control and monitoring unit 17.
  • the voltage U C applied to the capacitor 23 reaches the value V CC at a time t 1 , what is detected by the control and monitoring unit 17 accordingly.
  • the reset input 28 is pulsed closed to ground 21, which can be seen from the course 35 until a time t 2 .
  • the control and monitoring unit 17 causes a current pulse 36 to be output to the first switch 10, so that it becomes electrically conductive.
  • This current pulse 36 is output over a time interval t w , after which the current pulse 36 goes out at a time t 3 .
  • a time t 4 sets in Fig. 3 the time at which a previously selected program of the household appliance is terminated. At this time t 4 , the second switch 11 is thus switched to the open switching state, and the control device 2 is turned off.
  • the control device 2 it is possible to turn on the control device 2 by simply turning the actuating element of the program selector 5 again. If the actuating element of the program selector 5 is at a time t 5 in a previously selected position and at a time t 6 in an adjacent position (the actuating element is rotated by one position), the reset input 28 of the control and monitoring unit 17 is during the Time interval between t 5 and t 6 at ground 21. This is evaluated by the control and monitoring unit 17 to the effect that a further current pulse 36 is output to the first switch 10 at time t 6 and the first switch 10 is closed.
  • a circuit arrangement 1 is thus provided, with which on the one hand a reduction of power consumption after completion of a program allows and on the other hand given the opportunity to turn on by pressing the program selector 5, the control device 2 after the end of the program again.
  • the described circuit arrangement 1 can be used without a bistable relay and without an additional power switch, as used in the prior art.
  • Another advantage of the described circuit arrangement is the fact that the existing control panels do not need to be redesigned to ensure the functionality of the circuit arrangement 1.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Relay Circuits (AREA)
  • Keying Circuit Devices (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Food-Manufacturing Devices (AREA)
EP20090760826 2008-12-05 2009-11-23 Haushaltsgerät mit automatischer abschaltung Not-in-force EP2373839B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09760826T PL2373839T3 (pl) 2008-12-05 2009-11-23 Sprzęt gospodarstwa domowego z automatycznym wyłączeniem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008044378A DE102008044378A1 (de) 2008-12-05 2008-12-05 Haushaltsgerät mit automatischer Abschaltung
PCT/EP2009/065595 WO2010063595A1 (de) 2008-12-05 2009-11-23 Haushaltsgerät mit automatischer abschaltung

Publications (2)

Publication Number Publication Date
EP2373839A1 EP2373839A1 (de) 2011-10-12
EP2373839B1 true EP2373839B1 (de) 2015-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090760826 Not-in-force EP2373839B1 (de) 2008-12-05 2009-11-23 Haushaltsgerät mit automatischer abschaltung

Country Status (7)

Country Link
US (1) US8836173B2 (pl)
EP (1) EP2373839B1 (pl)
CN (1) CN102239289B (pl)
DE (1) DE102008044378A1 (pl)
EA (1) EA020471B1 (pl)
PL (1) PL2373839T3 (pl)
WO (1) WO2010063595A1 (pl)

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US8836173B2 (en) 2014-09-16
WO2010063595A1 (de) 2010-06-10
US20110234017A1 (en) 2011-09-29
PL2373839T3 (pl) 2015-06-30
EA020471B1 (ru) 2014-11-28
DE102008044378A1 (de) 2010-06-10
CN102239289A (zh) 2011-11-09
CN102239289B (zh) 2013-01-23
EA201170730A1 (ru) 2012-01-30
EP2373839A1 (de) 2011-10-12

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