EP2493364A1 - Appareil ménager, notamment lave-vaisselle - Google Patents

Appareil ménager, notamment lave-vaisselle

Info

Publication number
EP2493364A1
EP2493364A1 EP10770807A EP10770807A EP2493364A1 EP 2493364 A1 EP2493364 A1 EP 2493364A1 EP 10770807 A EP10770807 A EP 10770807A EP 10770807 A EP10770807 A EP 10770807A EP 2493364 A1 EP2493364 A1 EP 2493364A1
Authority
EP
European Patent Office
Prior art keywords
appliance according
device component
working line
household appliance
current
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.)
Withdrawn
Application number
EP10770807A
Other languages
German (de)
English (en)
Inventor
Stephan Lutz
Bruno Reiter
Markus Wecker
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
Publication of EP2493364A1 publication Critical patent/EP2493364A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A47L15/0049—Detection or prevention of malfunction, including accident prevention
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4217—Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
    • 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
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4219—Water recirculation
    • A47L15/4221—Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms
    • 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
    • A47L15/4291—Recovery arrangements, e.g. for the recovery of 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
    • 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
    • A47L2401/30—Variation of electrical, magnetical or optical quantities
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
    • G01R31/2829—Testing of circuits in sensor or actuator systems

Definitions

  • the invention relates to a domestic appliance, in particular a dishwasher, at least comprising a device component which can be supplied with electrical energy by means of a working line, in particular a solenoid valve, wherein the device component is arranged in series by means of a working line
  • An excuseelements can be controlled, that in at least one defective state permanently in a working line relevant current-conducting state remains.
  • device components such as an inlet valve, a regeneration valve and / or a water diverter, are connected in the rinsing fluid circuit of a dishwasher. These may comprise electromagnetically operable actuators or actuators, which are controllable by means of a control device.
  • a control element is associated with each actuator, which is arranged in the circuit of the actuator and can be controlled by the control device. In the closed position of the AnSteuerides the power supply to the actuator is interrupted, while in the open position of the control element, the power supply to the actuator is released.
  • the regeneration valve or the water diverter their actuators during a rinse cycle in total only over a period of a few minutes in operation.
  • these actuators are designed for continuous operation. Such a continuous operation of the actuator would result in an error case in which the triac is defective and therefore permanently conductive. In this case, the associated actuator would be permanently activated.
  • the actuators are therefore far oversized for normal operation in which they are only briefly in operation.
  • the object of the invention is to provide a household appliance, in particular a dishwasher, in which the operational safety is ensured in a simple, cost-effective manner.
  • the household appliance for detecting a defect state of the drive element to a monitoring unit.
  • the monitoring unit can at not driven drive detect an electrical current in a working line of the device component and compare with a threshold. On the basis of this comparison, the defect state of the drive element can be seen.
  • a function monitoring of the drive element, with a faulty drive element is recognizable. If such a defect state of the drive element is detected, appropriate measures can be taken to interrupt a power supply to the at least one device component. Since according to the invention a faulty actuator can be detected, therefore, the associated device component no longer has to be designed for continuous operation, as it would without such
  • Monitoring unit is the case. With such a function monitoring, the monitoring unit can thus use a voltage or current measurement to detect whether the activation element is conductive or non-conductive. It can with a
  • Monitoring unit and a plurality of device components are monitored, which are, for example, connected in series or in parallel.
  • the monitoring unit in particular the current measuring device, can in the
  • the monitoring unit can at least one voltage or
  • Current measuring device such as a measuring shunt, or have a current sensor with which the current flow can be detected by the actuator.
  • the actually detected current and / or voltage level can be compared with the setpoint or threshold value for a functional and plausibility check. On the basis of the comparison, the error can then be detected.
  • Voltage drop can be detected at a connected in the working line measuring resistor. Such a voltage drop is detected, provided that current through the
  • the drive element of the device component can be a control, for example a relay, a triac, a transistor or a mosfet, which can be switched between a current-conducting closed position and an open position.
  • the additional shutdown element may be a relay or a semiconductor.
  • the control device - in addition to the drive element of the device component - be associated with an additional shutdown element. With the additional shutdown, the controller can be independent of a
  • Switching position of the control element interrupt or release a power supply to the device component.
  • the shut-off element can therefore be arranged in normal operation, that is, during a rinsing cycle, in a current-conducting closed position and switched to its open position only when the drive element is defective.
  • two or more device components are provided in the working line.
  • Their control elements can be in signal connection with the control device.
  • the device components may be connected in partial working lines of the working line parallel to each other, each device component may be assigned a control element.
  • the plurality of device components may preferably be assigned a common switch-off element.
  • the turn-off element can in particular be connected in series with the device components connected in parallel.
  • a pulse width modulation can be used in the power supply of the device component.
  • a rectifier can be connected in the circuit of the device component, which rectifies the mains voltage.
  • the control device can control the abovementioned shutdown element or the control element clocked in an adjustable duty cycle.
  • the duty cycle may be greater than 1000 Hz, preferably greater than audible frequencies, that is greater than 10 to 12 kHz, especially in a frequency range greater than 1000 Hz.
  • the duty cycle of the shutdown element or the control element can be varied such that an arithmetically averaged voltage is applied to the device component, which corresponds approximately to the voltage to which the device component is designed.
  • the device component can be used regardless of the size of the mains voltage.
  • a mains voltage of 230V (AC voltage) with direct rectification of the mains voltage a DC voltage of 320V can be generated.
  • the DC voltage can be clocked by the shutdown element or the control element, for example, in a duty cycle of 50:50 as well as in a predetermined switching frequency.
  • an arithmetically averaged DC voltage of 60V is applied to the device component.
  • the clock ratio can be changed so that in turn an arithmetically averaged DC voltage of 160V can be set on the device component.
  • a designed to 160V device component can thus be used for varying mains voltages.
  • FIG. 1 shows a schematic block diagram of a dishwasher
  • FIG. 2 shows a circuit diagram according to the first embodiment
  • FIG. 3 shows a circuit diagram according to the second exemplary embodiment.
  • 1 is a rough schematic as an exemplary embodiment of a household appliance, a dishwasher with a, a washing compartment delimiting washing container. 1 shown.
  • a sump 3 of the washing container 1 opens a
  • the sump 3 is also connected via a recirculation line 9 with a circulation pump 13 in connection, which leads the rinsing liquid through a water heater 14 and a water switch 15 either to spray arms 16 in the washing compartment of the washing compartment 1 or to a fleet storage 17, can be cached in the rinsing liquid ,
  • Liquid circuit of the dishwasher switched device components such as the inlet valve 7, the circulation pump 13 or the water switch 15 are over
  • Signal lines 19 can be controlled by a control device 21. Based on the current flow diagram shown in FIG. 2, the power supply of
  • the actuators or actuators 23, 24, 25 are shown in FIG. 2, with the aid of which the inlet valve 7, the water diverter 15 or other device components, such as a regeneration valve (not shown), can be actuated.
  • the actuators 23, 24, 25 are supplied with electrical energy via a working line 30 connected to the power supply network.
  • the actuators 23, 24, 25 are connected in mutually parallel sub-lines 30a, 30b, 30c of the working line 30.
  • Each of the actuators 23 to 25 is preceded by a drive element 26, 27, 28 in series.
  • the AnSteuerieri 26, 27, 28 are in the application shown triacs, which are controlled via the signal lines 19 by means of the control device 21.
  • a shut-off element 29 is arranged in the working line 30, which is likewise coupled to the control device 21 via a signal line 19.
  • the shut-off element 29 is in its during a rinse cycle
  • a measuring shunt 31 of a monitoring device 32 is connected in the working line 30 leading to the sub-lines 30a, 30b, 30c.
  • the shut-off element 29 may be a relay or a semiconductor.
  • the monitoring device 32 With the monitoring device 32, the current flowing through the working line 30 or through the device components 23, 24, 25 electrical current can be detected.
  • the captured Current can in an evaluation of the monitoring unit 32 with a
  • Threshold are compared. If a current flow is detected which is greater than the predetermined threshold value, then this is regarded as the defect state of one of the three actuators, which is impermissibly current-conducting.
  • the actuators 23, 24, 25 are temporarily in operation, that is with a certain pulse-pause ratio or only for a very short time.
  • the actuators 23, 24, 25 may have, for example, solenoid valve coils which, when activated, move a valve stem of the inlet valve 7 or of the regeneration valve by one valve stroke.
  • the control device 21 controls, for example, the triac 26, whereby the actuator 23 is supplied with electrical energy. Subsequently, the triac 26 can be closed again, whereby the power supply to the actuator 23 is interrupted.
  • the triac 26 can blow. If the triac 26 is defective, it may permanently be in a current-conducting closed position, as a result of which the actuator 23 is permanently supplied with current.
  • This error case is detected by means of the monitoring device 32, in which the current intensity measured by the first measuring shunt 31 is compared with the threshold value which corresponds to a predetermined desired current intensity. The above-mentioned error case is detected due to a deviation of the actually measured current from this target current.
  • the monitoring unit 32 sends an interference signal to the control device 21.
  • the control device 21 then opens the shut-off element 29, as a result of which the power supply to the actuators 23 to 25 is interrupted.
  • the control device 21 can activate an optical warning display 22.
  • FIG. 3 shows a circuit diagram according to the second exemplary embodiment, in which additionally a pulse width modulation is used, with which the electrical voltage conducted to the respective actuator 23 to 25 remains constant, independently of mains fluctuations.
  • the monitoring unit 32 is preceded by a rectifier 33, with which the mains voltage is converted into a DC voltage.
  • a freewheeling diode 34 is provided for protection against overvoltage.
  • the shut-off element 29 is not constant in its closed position according to FIG. 2 in normal operation, but is clocked in a predetermined duty cycle and at a predetermined switching frequency.
  • the duty cycle is set by the controller 21 such that an arithmetically averaged voltage is generated, which rests against the actuators 23 to 25 and corresponds approximately to a voltage to which the respective actuators 23 to 25 are designed.
  • a DC voltage of 320 V can be generated by means of the rectifier 33.
  • a duty factor of the turn-off element 29 of 50:50 an arithmetically averaged direct voltage of 160 V can thus result, which is applied to the actuators 23, 24, 25.
  • the duty cycle starting from 50:50 can also be adjusted so that an arithmetically averaged DC voltage of 160V is set again, which is applied to the actuators 23, 24, 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

L'invention concerne un appareil ménager, notamment un lave-vaisselle, présentant au moins un élément d'appareil (23, 24, 25), notamment une électrovanne, apte à être alimenté en énergie électrique par une ligne fonctionnelle (30), ledit élément d'appareil (23, 24, 25) étant apte à être commandé par un élément de commande (26, 27, 28) monté en série dans la ligne fonctionnelle (30) et étant apte, dans au moins un état défectueux, à demeurer durablement à l'état conducteur en ce qui concerne la ligne fonctionnelle (30). Selon l'invention, une unité de surveillance (32) détecte, lorsque l'élément de commande (26, 27, 28) n'est pas commandé, le courant électrique parcourant les éléments d'appareil (23, 24, 25) et assure une comparaison avec une valeur seuil pour détecter l'état défectueux de l'élément de commande (26, 27, 28).
EP10770807A 2009-10-28 2010-10-22 Appareil ménager, notamment lave-vaisselle Withdrawn EP2493364A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009046083A DE102009046083A1 (de) 2009-10-28 2009-10-28 Haushaltsgerät, insbesondere Geschirrspülmaschine
PCT/EP2010/065954 WO2011051178A1 (fr) 2009-10-28 2010-10-22 Appareil ménager, notamment lave-vaisselle

Publications (1)

Publication Number Publication Date
EP2493364A1 true EP2493364A1 (fr) 2012-09-05

Family

ID=43734105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10770807A Withdrawn EP2493364A1 (fr) 2009-10-28 2010-10-22 Appareil ménager, notamment lave-vaisselle

Country Status (3)

Country Link
EP (1) EP2493364A1 (fr)
DE (1) DE102009046083A1 (fr)
WO (1) WO2011051178A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9661977B2 (en) 2012-07-06 2017-05-30 Ecolab Usa Inc. System for determining an operating state of a dishwasher and an according method
DE102013226828A1 (de) * 2013-12-20 2015-06-25 BSH Hausgeräte GmbH Haushaltsgerät mit einem elektrischen Verbraucher

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4103373C2 (de) 1991-02-05 1994-06-16 Stiebel Eltron Gmbh & Co Kg Durchlauferhitzer
DE19547393B4 (de) * 1995-12-19 2004-08-12 AEG Hausgeräte GmbH Haushaltsgerät mit elektronischer Programmsteuerung
JPH09213471A (ja) 1996-01-30 1997-08-15 Sanyo Electric Co Ltd 電子レンジ
DE19704216A1 (de) * 1997-02-05 1998-08-06 Deutsche Telekom Ag Überwachungseinrichtung für netzbetriebene Haushaltsgeräte
DE19805658A1 (de) * 1997-08-22 1999-03-11 Bosch Gmbh Robert Verfahren zur Erkennung von Fehlschaltungen eines ersten Relais
DE19755089C2 (de) 1997-12-11 2003-07-03 Whirlpool Co Sicherheitsschaltung für einen Heizkreis einer Wasch-, Geschirrspülmaschine oder eines Trockners
DE10130606A1 (de) * 2001-06-26 2003-01-09 Bsh Bosch Siemens Hausgeraete Verfahren zur Überprüfung der elektrischen Sicherheit eines Haushaltsgeräts und entsprechendes Haushaltgerät
DE102008006512A1 (de) 2008-01-29 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Schaltungsanordnung zum Betreiben eines Hausgeräts und entsprechendes Verfahren

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2011051178A1 *

Also Published As

Publication number Publication date
WO2011051178A1 (fr) 2011-05-05
DE102009046083A1 (de) 2011-05-12

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