EP1775366B1 - Control circuit for fabric treatment devices - Google Patents
Control circuit for fabric treatment devices Download PDFInfo
- Publication number
- EP1775366B1 EP1775366B1 EP20060021379 EP06021379A EP1775366B1 EP 1775366 B1 EP1775366 B1 EP 1775366B1 EP 20060021379 EP20060021379 EP 20060021379 EP 06021379 A EP06021379 A EP 06021379A EP 1775366 B1 EP1775366 B1 EP 1775366B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- motor
- door
- washing
- door lock
- 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
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Classifications
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- 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
- D06F49/00—Domestic spin-dryers or similar spin-dryers not suitable for industrial use
- D06F49/003—Doors or covers; Safety arrangements
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S388/00—Electricity: motor control systems
- Y10S388/907—Specific control circuit element or device
- Y10S388/917—Thyristor or scr
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5611—For control and machine elements
Definitions
- the invention relates to a control of a device for laundry treatment according to the preamble of claim 1.
- Previously used circuits for controlling a laundry treating appliance include a motor circuit and a door latching circuit, both of which are to be controlled separately.
- the motor circuit has one through an AC phase gating with a triac-controlled AC collector motor for driving the washing drum.
- the direction of rotation of the motor is reversible and on the other hand can interrupt the motor circuit, as it is necessary for example in case of failure, ie an emergency shutdown.
- the door lock circuit the loading opening or door of the washing machine or spinner is locked with a switch controlled by a PTC bimetallic element during the entire washing or spinning operation in order to prevent any possible endangering of the user by contact with the rotating drum.
- This PTC bimetallic element is permanently driven with a separate electronic or electromechanical switching element during the washing process.
- Such a circuit for controlling a device for laundry treatment with two independent circuits for engine and door lock may, with appropriate interpretation, violate the provisions of European standard EN 60335-1 ⁇ 19. In this case, additional circuit will be required to monitor the door lock circuit. In addition, 2 independent circuits require an increased material requirement, which runs counter to the absolute requirement for the household appliance industry, namely the cost savings.
- the EP 0 702 103 A1 discloses a generic circuit for controlling a washing machine, which controls the motor and the door locking element via a common electronic switching element.
- a disadvantage of the circuit described is that a shutdown of the engine is only possible via a main relay, which simultaneously interrupts the power supply to the door locking element. Due to the deactivation of the door lock dangerous conditions could result for the user of the washing machine, with renewed activation of the engine.
- the present invention is therefore based on the problem of providing a circuit for controlling a device for laundry treatment, on the one hand satisfies the need for cost reduction and on the other hand, the European regulations for home appliances with rotating drums and thereby switching off the engine while locking the door allows.
- a circuit for controlling a device for laundry treatment wherein the circuit comprises a motor circuit with an AC motor and a door lock circuit, wherein the motor circuit and the door lock circuit are controlled via a single common electronic switching element, wherein two electromechanical switches in Motor circuit can be used, which are connected to the winding of the AC motor rotor or with the winding of the AC motor field and interrupt the motor circuit in a first switching state and cause a reversal of the direction of rotation of the AC motor in a second switching state.
- a washing machine Under a device for laundry treatment is a washing machine, a tumble dryer, a spin dryer, etc. understood.
- the novel combination of the control of the two in their function and control completely different electrical components of a washing machine, namely the washing motor and the door lock, in a single common switching element is made possible by the use of standard, in any circuit for engine control in a washing machine anyway components. In doing so, certain precisely defined sequences must be observed when controlling the two components.
- a circuit for controlling a device for laundry treatment has a motor circuit and a door lock circuit, wherein the motor circuit and the door lock circuit are interconnected such that both circuits are jointly controlled via a single common electronic switching element, that are supplied with power.
- two electromechanical switches are used in the motor circuit, which are connected to the winding of the AC motor rotor or to the winding of the AC motor field and interrupt the motor circuit in a first switching state and cause a reversal of direction of the AC motor in a second switching state.
- An electromechanical switch is understood to mean relays or comparable components.
- the door lock circuit is switched through when driving on the single common electronic switching element continuously, the motor circuit is interrupted by at least one electromechanical switch at the same time.
- the single common switching element of the door lock circuit By activating the single common switching element of the door lock circuit is driven and switched continuously, so energized.
- the motor circuit is simultaneously activated in addition to the door locking circuit.
- the motor circuit In the motor circuit is at least one electromechanical switch, through which the motor circuit can be interrupted, so it can be switched off.
- the arrangement of at least one electromechanical switch in the motor circuit ensures, despite only a single common electronic switching element for the motor circuit and door lock circuit, that the door lock required for safety reasons is activated before the laundry drum is driven by the AC motor.
- the single electronic switching element is a triac or a thyristor.
- the door lock circuit has a switch and / or a mechanism for locking the door, which can be actuated by PTC bimetallic element.
- the door lock circuit has a controllable by a PTC bimetallic element switch and / or a mechanism for locking the door, it is ensured that after switching off the common electronic switching element, ie the power switch circuit of the door lock circuit, the mechanism for locking the door at least another 30 sec remains locked. In other words, even after only a brief energization of the door lock circuit, the locking mechanism remains closed for at least 30 seconds and the door can not be opened. Until the door could be opened, the laundry drum has come to a standstill without any need for an additional electronic component to control it.
- the motor circuit in addition to the two electromechanical switches for reversing the direction of rotation of the AC motor and interrupting the motor current to another electromechanical switch for field switching, wherein the electromechanical switch is connected to the field switching with the other winding of the AC motor, as the winding, which is connected to the two electromechanical switches for reversing the direction of rotation and interrupting the motor current.
- FIG. 1 shows a known circuit 10 for controlling a washing machine with a motor circuit 20 and a door lock circuit 30.
- the motor circuit 20 has a triac 21, via which the AC washing motor 22 is driven or energized. The switching on and off of the washing motor takes place exclusively via the triac 21.
- the direction of rotation reversibility of the washing motor 22 is realized in that two relays 23.1 and 23.2 are connected to the rotor winding of the washing motor 22.1.
- An optional further relay 24 for field switching is arranged in the supply line to the field generating winding of the washing motor 22.2.
- the relays 23.1 and 23.2 also enable a power-off circuit of the washing motor 22.1.
- the use of this option is not known from the prior art.
- the parallel to the motor circuit 20 connected door lock circuit 30 has a separately switchable triac 31 for driving the Door lock circuit 30 on. Via the triac 31, a PTC bimetallic element 32 is energized, which causes the locking of the washing machine door. By locking the washing machine door, a door contact 33 is closed.
- the door contact 33 is a backup that the washing machine motor 22 starts only in the case and drives the laundry drum when the door is locked against opening and a risk of injury is excluded.
- FIG. 2 shows the progress of the switching state (activated - ON or OFF - OFF) of the components in the motor circuit 20 and in the door lock circuit 30 as a function of time.
- the washing program start is indicated by the first vertical line and the washing program end by the second vertical line.
- the Figures 2a, 2b and 2c refer to components in the motor circuit 20, the Figures 2d and 2e on components of the door lock circuit 30.
- a washing program starts by t after a certain time according to Figure 2d triac 31 is activated and remains activated until the end of the washing process. With the end of the washing process, shortly before the end of the watch program, the triac 31 is de-energized, so the bimetallic locking element 32 is no longer energized.
- the PTC bimetallic element 32 Shortly after activation of the triac 31, the PTC bimetallic element 32 reaches its operating temperature and locks the door lock, as in FIG. 2e shown, even beyond the end of the washing process, to the end of the wash program. Only with the end of the wash program is it again possible to open the washing machine door.
- FIG. 2b shows that from the activation of the triac 21, the drive of the laundry drum by the washing motor 22 is possible, provided that the relays 23.1 and 23.2 are in such a switching position that the motor 22 is activated ( Figure 2c ). This is always the case with known circuit solutions of the prior art.
- An interruption of the washing motor movement can be achieved by deactivating the triac 21 (FIG. FIG. 2a ).
- the triac 31 which, as mentioned after expiration of at least 30 sec delay time, makes an opening of the washing machine door possible with the end of the washing program.
- FIG. 3 shows a circuit 40 for controlling a washing machine according to the present invention with a motor circuit 20 and a door lock circuit 30, wherein both circuits 20 and 30 are energized via a single common electronic switching element 41, such as a triac.
- a single common electronic switching element 41 such as a triac.
- the basic structure of the motor circuit 20 and the door lock circuit 30 corresponds to the respective structure as it is for FIG. 1 has been described. On the description too FIG. 1 is therefore referred to.
- an interconnection of the two relays 23.1 and 23.2 with the winding of the washing motor 22.2 generating the field would also be possible.
- the optional further relay 24 could also be connected to the rotor winding of the washing motor 22.1.
- a relay is used only to reverse the direction of rotation and a relay is used only to interrupt the motor circuit.
- circuit 40 the door latch circuit 30 is behind the single common electronic switching element 41 with the motor circuit 20 is interconnected.
- the motor circuit 20 and the door lock circuit 30 can be energized together by activating only one triac 41 and can also be switched off together.
- the simultaneous energization of motor circuit 20 and door lock circuit 30 is also decoupled. This decoupling is done by using the relays 23.1 and 23.2 and is an outstanding feature of the present invention. Because while the door lock circuit 30 remains active, the washing motor 22 and thus the drive of the laundry drum by means of the relays 23.1 and 23.2 can be switched off. In this case, the washing machine door would remain locked, for example, for safety reasons, although the motor 22 is temporarily switched off.
- FIG. 4 is the course of the switching state (activated - ON or OFF - OFF) of the components of the circuit 40 after FIG. 3 in the motor circuit 20 and in the door lock circuit 30 as a function of time.
- the washing program start is indicated by the first vertical line and the washing program end by the second vertical line.
- FIG. 4a refers to the switching element 41.
- the Figures 4b and 4c refer to components in the motor circuit 20.
- FIG. 4d refers to the door lock circuit 30.
- a washing program starts by t after a certain time according to FIG. 4a the common triac 41 is driven.
- the PTC bimetallic element 32 Shortly after activation of the triac 41, the PTC bimetallic element 32 reaches its operating temperature and locks the door lock as in FIG FIG. 4d shown, even beyond the end of the washing process to the end of the wash program. Only now it is again possible to open the washing machine door.
- FIG. 4b shows the drive of the laundry drum by the washing motor 22 only after some time.
- An interruption of the washing motor movement can be achieved by deactivating the triac 41 (FIG. FIG. 4a ) or by interrupting the power supply through the relays 23.1 and 23.2 ( Figure 4c ).
- first of all the motor circuit 20 (together with the door lock circuit 30) is de-energized via the triac 41 ( FIG. 4a ), in this switching state via the relays 23.1 and 23.2 ( Figure 4c ) switched the motor state and then switched on the triac 41, the current flow again ( FIG. 4a ). Consequently, the "switching spark" at the triac 41, but not at the contacts of the relays 23.1 and 23.2.
- the door latch remains open until the end of the wash cycle (FIG. FIG. 4d ), even if the switching element 41 should be temporarily deactivated during the washing process ( FIG. 4a ).
- the triac 41 is permanently de-energized until the trailing lock releases and allows the door to open safely, since the laundry drum has stopped in the meantime.
- washing motor 22 If the washing motor 22 must remain switched off during the wash program for a long time, can be energized with the relays 23.1 and 23.2 of the door lock circuit by turning on the triac 41 during the program, without causing the engine is driven ( FIG. 4a ).
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Control Of Ac Motors In General (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Ansteuerung eines Geräts zur Wäschebehandlung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a control of a device for laundry treatment according to the preamble of
Bislang verwendete Schaltungen zur Ansteuerung eines Geräts zur Wäschebehandlung, wie beispielsweise einer Waschmaschine oder einer Wäscheschleuder, weisen einen Motorstromkreis und einen Türverriegelungsstromkreis auf, wobei beide Stromkreise separat voneinander anzusteuern sind. Der Motorstromkreis weist einen durch einen AC-Phasenanschnitt mit einem Triac-geregelten AC-Kollektormotor für den Antrieb der Waschtrommel auf. Im Motorstromkreis sind weiterhin Relais geschaltet, durch die einerseits die Drehrichtung des Motors umkehrbar ist und die andererseits den Motorstromkreis unterbrechen können, wie es beispielsweise im Störungsfall, also einer Notabschaltung, erforderlich ist. Über den Türverriegelungsstromkreis wird die Beladeöffnung oder Tür von Waschmaschine oder Schleuder während des gesamten Wasch- oder Schleudervorgangs mit einem durch ein PTC-Bimetallelement gesteuerten Schalter verriegelt, um eine mögliche Gefährdung des Nutzers durch den Kontakt mit der rotierenden Trommel auszuschließen. Dieses PTC-Bimetallelement wird mit einem separaten elektronischen oder elektromechanischen Schaltelement während des Waschvorgangs dauernd angesteuert.Previously used circuits for controlling a laundry treating appliance, such as a washing machine or a spin dryer, include a motor circuit and a door latching circuit, both of which are to be controlled separately. The motor circuit has one through an AC phase gating with a triac-controlled AC collector motor for driving the washing drum. In the motor circuit relays are still connected by the one hand, the direction of rotation of the motor is reversible and on the other hand can interrupt the motor circuit, as it is necessary for example in case of failure, ie an emergency shutdown. Through the door lock circuit, the loading opening or door of the washing machine or spinner is locked with a switch controlled by a PTC bimetallic element during the entire washing or spinning operation in order to prevent any possible endangering of the user by contact with the rotating drum. This PTC bimetallic element is permanently driven with a separate electronic or electromechanical switching element during the washing process.
Eine derartige Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung mit 2 voneinander unabhängigen Stromkreisen für Motor und Türverriegelung kann bei entsprechender Auslegung gegen die Vorschrift der europäischen Norm EN 60335-1 § 19 verstoßen. In diesem Fall wird eine zusätzliche Schaltung zur Überwachung des Stromkreises für die Türverriegelung erforderlich. Darüber hinaus erfordern 2 unabhängige Stromkreise einen erhöhten Materialbedarf, der der unbedingten Vorgabe für die Hausgeräteindustrie nämlich der Kosteneinsparung zuwiderläuft.Such a circuit for controlling a device for laundry treatment with two independent circuits for engine and door lock may, with appropriate interpretation, violate the provisions of European standard EN 60335-1 §19. In this case, additional circuit will be required to monitor the door lock circuit. In addition, 2 independent circuits require an increased material requirement, which runs counter to the absolute requirement for the household appliance industry, namely the cost savings.
Die
In Erkenntnis dieser Gegebenheiten liegt vorliegender Erfindung deshalb die Problemstellung zugrunde eine Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung bereitzustellen, die einerseits den der Notwendigkeit der Kostenreduzierung und andererseits den europäischen Vorschriften für Hausgeräte mit rotierenden Trommeln genügt und dabei das Abschalten des Motors bei gleichzeitigem Verriegeln der Türe ermöglicht.In recognition of these circumstances, the present invention is therefore based on the problem of providing a circuit for controlling a device for laundry treatment, on the one hand satisfies the need for cost reduction and on the other hand, the European regulations for home appliances with rotating drums and thereby switching off the engine while locking the door allows.
Die Aufgabe wird erfindungsgemäß gelöst durch eine Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung, wobei die Schaltung einen Motorstromkreis mit einem AC-Motor und einem Türverriegelungsstromkreis aufweist, wobei der Motorstromkreis und der Türverriegelungsstromkreis über ein einziges gemeinsames elektronisches Schaltelement ansteuerbar sind, wobei zwei elektromechanische Schalter im Motorstromkreis einsetzbar sind, die mit der Wicklung des AC-Motorrotors oder mit der Wicklung des AC-Motorfeldes verschaltet sind und in einem ersten Schaltzustand den Motorstromkreis unterbrechen und in einem zweiten Schaltzustand eine Drehrichtungsumkehr des AC-Motors bewirken.The object is achieved by a circuit for controlling a device for laundry treatment, wherein the circuit comprises a motor circuit with an AC motor and a door lock circuit, wherein the motor circuit and the door lock circuit are controlled via a single common electronic switching element, wherein two electromechanical switches in Motor circuit can be used, which are connected to the winding of the AC motor rotor or with the winding of the AC motor field and interrupt the motor circuit in a first switching state and cause a reversal of the direction of rotation of the AC motor in a second switching state.
Unter einem Gerät zur Wäschebehandlung wird eine Waschmaschine, ein Wäschetrockner, eine Wäscheschleuder, etc. verstanden. Die neuartige Vereinigung der Ansteuerung der beiden in ihrer Funktion und Ansteuerung völlig verschiedenen elektrischen Bauteile einer Waschmaschine, nämlich des Waschmotors und der Türverriegelung, in nur einem einzigen gemeinsamen Schaltelement wird ermöglicht durch die Nutzung von standardmäßigen, in jeder Schaltung zur Motorsteuerung in einer Waschmaschine ohnehin vorhandenen Bauteile. Dabei sind bestimmte genau definierte Abläufe bei der Ansteuerung der beiden Bauteile zu beachten.Under a device for laundry treatment is a washing machine, a tumble dryer, a spin dryer, etc. understood. The novel combination of the control of the two in their function and control completely different electrical components of a washing machine, namely the washing motor and the door lock, in a single common switching element is made possible by the use of standard, in any circuit for engine control in a washing machine anyway components. In doing so, certain precisely defined sequences must be observed when controlling the two components.
Mit anderen Worten, eine Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung weist einen Motorstromkreis und einen Türverriegelungsstromkreis auf, wobei der Motorstromkreis und der Türverriegelungsstromkreis derart miteinander verschaltet sind, dass beide Stromkreise gemeinsam über ein einziges gemeinsames elektronisches Schaltelement ansteuerbar sind, also mit Strom versorgt werden. Darüber hinaus sind zwei elektromechanische Schalter im Motorstromkreis einsetzbar, die mit der Wicklung des AC-Motorrotors oder mit der Wicklung des AC-Motorfeldes verschaltet sind und in einem ersten Schaltzustand den Motorstromkreis unterbrechen und in einem zweiten Schaltzustand eine Drehrichtungsumkehr des AC-Motors bewirken. Unter einem elektromechanischen Schalter werden Relais oder vergleichbare Bauteile verstanden.In other words, a circuit for controlling a device for laundry treatment has a motor circuit and a door lock circuit, wherein the motor circuit and the door lock circuit are interconnected such that both circuits are jointly controlled via a single common electronic switching element, that are supplied with power. In addition, two electromechanical switches are used in the motor circuit, which are connected to the winding of the AC motor rotor or to the winding of the AC motor field and interrupt the motor circuit in a first switching state and cause a reversal of direction of the AC motor in a second switching state. An electromechanical switch is understood to mean relays or comparable components.
Durch das ersatzlose Weglassen eines eigenen Schaltelements für den Türverriegelungsstromkreis werden Herstellungskosten einspart und durch die Veränderung der Schaltzustände ist die Drehrichtung des AC-Motors umkehrbar. Darüber hinaus werden die Vorschriften der europäischen Norm in einfacher Art und Weise erfüllt.Due to the omission of a separate switching element for the door lock circuit manufacturing costs are saved and by changing the switching states, the direction of rotation of the AC motor is reversible. In addition, the requirements of the European standard are met in a simple manner.
Infolge der unterschiedlichen Anordnungsmöglichkeiten für die zwei elektromechanischen Schalter, wird gewährleistet, dass konstruktive Variationsmöglichkeiten bei der Beschaltung eines Geräts zur Wäschebehandlung möglich sind.Due to the different arrangement options for the two electromechanical switches, it is ensured that constructive variations in the wiring of a device for laundry treatment are possible.
In einer vorteilhaften Weiterbildung ist der Türverriegelungsstromkreis bei Ansteuerung über das einzige gemeinsame elektronische Schaltelement durchgängig geschaltet, wobei der Motorstromkreis gleichzeitig durch wenigsten einen elektromechanischen Schalter unterbrechbar ist.In an advantageous development of the door lock circuit is switched through when driving on the single common electronic switching element continuously, the motor circuit is interrupted by at least one electromechanical switch at the same time.
Durch die Aktivierung des einzigen gemeinsamen Schaltelements wird der Türverriegelungsstromkreis angesteuert und durchgängig geschaltet, also bestromt. Durch die Aktivierung des einzigen gemeinsamen elektronischen Schaltelements wird neben dem Türverriegelungsstromkreis gleichzeitig der Motorstromkreis angesteuert. Im Motorstromkreis befindet sich wenigstens ein elektromechanischer Schalter, durch den der Motorstromkreis unterbrechbar ist, also stromlos geschaltet werden kann.By activating the single common switching element of the door lock circuit is driven and switched continuously, so energized. By activating the single common electronic switching element, the motor circuit is simultaneously activated in addition to the door locking circuit. In the motor circuit is at least one electromechanical switch, through which the motor circuit can be interrupted, so it can be switched off.
Durch die Anordnung wenigstens eines elektromechanischen Schalters im Motorstromkreis wird trotz nur eines einzigen gemeinsamen elektronischen Schaltelements für Motorstromkreis und Türverriegelungsstromkreis gewährleistet, dass die aus Sicherheitsgründen erforderliche Türverriegelung aktiviert ist, bevor die Wäschetrommel durch den AC-Motor angetrieben wird.The arrangement of at least one electromechanical switch in the motor circuit ensures, despite only a single common electronic switching element for the motor circuit and door lock circuit, that the door lock required for safety reasons is activated before the laundry drum is driven by the AC motor.
In einer bevorzugten Alternative ist das einzige elektronische Schaltelement ein Triac oder ein Tyristor.In a preferred alternative, the single electronic switching element is a triac or a thyristor.
In einer weiteren Ausführungsform weist der Türverriegelungsstromkreis einen Schalter und/oder einen Mechanismus zur Verriegelung der Gerätetür auf, der durch PTC-Bimetallelement ansteuerbar ist.In a further embodiment, the door lock circuit has a switch and / or a mechanism for locking the door, which can be actuated by PTC bimetallic element.
Dadurch, dass der Türverriegelungsstromkreis einen durch ein PTC-Bimetallelement ansteuerbaren Schalter und/oder einen Mechanismus zur Verriegelung der Gerätetür aufweist, wird gewährleistet, dass nach Abschaltung des gemeinsamen elektronischen Schaltelements, also der Stromlosschaltung des Türverriegelungsstromkreises der Mechanismus zur Verriegelung der Gerätetür mindestens weitere 30 sec verriegelt bleibt. In anderen Worten, auch nach nur einer kurzzeitigen Bestromung des Türverriegelungsstromkreises, bleibt der Verriegelungsmechanismus für mindestens 30 sec geschlossen und die Tür lässt sich nicht öffnen. Bis zum möglichen Öffnen der Tür ist die Wäschetrommel in jedem Fall zum Stillstand gekommen, ohne dass ein zusätzliches elektronisches Bauteil dies kontrollieren müsste.The fact that the door lock circuit has a controllable by a PTC bimetallic element switch and / or a mechanism for locking the door, it is ensured that after switching off the common electronic switching element, ie the power switch circuit of the door lock circuit, the mechanism for locking the door at least another 30 sec remains locked. In other words, even after only a brief energization of the door lock circuit, the locking mechanism remains closed for at least 30 seconds and the door can not be opened. Until the door could be opened, the laundry drum has come to a standstill without any need for an additional electronic component to control it.
In einer weiteren Ausgestaltung weist der Motorstromkreis neben den zwei elektromechanischen Schaltern zur Drehrichtungsumkehr des AC-Motors und zur Unterbrechung des Motorstromes einen weiteren elektromechanischen Schalter zur Feldumschaltung auf, wobei der elektromechanische Schalter zur Feldumschaltung mit der jeweils anderen Wicklung des AC-Motors verschaltet ist, als die Wicklung, die mit den zwei elektromechanischen Schaltern zur Drehrichtungsumkehr und Unterbrechung des Motorstroms verschaltet ist.In a further embodiment, the motor circuit in addition to the two electromechanical switches for reversing the direction of rotation of the AC motor and interrupting the motor current to another electromechanical switch for field switching, wherein the electromechanical switch is connected to the field switching with the other winding of the AC motor, as the winding, which is connected to the two electromechanical switches for reversing the direction of rotation and interrupting the motor current.
Durch den weiteren elektromechanischen Schalter im Motorstromkreis wird gewährleistet, dass vorteilhafterweise eine Feldumschaltung möglich ist.By further electromechanical switch in the motor circuit ensures that advantageously a field switching is possible.
Ein Ausführungsbeispiel wird anhand der Zeichnung und anhand nachstehender Beschreibung näher erläutert. Es zeigen
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Fig. 1 eine Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung gemäß Stand der Technik, -
Fig. 2 ein zeitabhängiges Schaltzustandsdiagramm gemäß Stand der Technik, -
Fig. 3 eine Schaltung zur Ansteuerung eines Geräts zur Wäschebehandlung gemäß vorliegender Erfindung, -
Fig. 4 ein zeitabhängiges Schaltzustandsdiagramm gemäß vorliegender Erfindung.
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Fig. 1 a circuit for controlling a device for laundry treatment according to the prior art, -
Fig. 2 a time-dependent switching state diagram according to the prior art, -
Fig. 3 a circuit for controlling a device for laundry treatment according to the present invention, -
Fig. 4 a time-dependent switching state diagram according to the present invention.
Der parallel zum Motorstromkreis 20 geschaltete Türverriegelungsstromkreis 30 weist einen separat schaltbaren Triac 31 zur Ansteuerung des Türverriegelungsstromkreises 30 auf. Über den Triac 31 ist ein PTC-Bimetallelement 32 bestrombar, das die Verriegelung der Waschmaschinentür bewirkt. Durch die Verriegelung der Waschmaschinentür wird ein Türkontakt 33 geschlossen. Der Türkontakt 33 ist eine Sicherung dafür, dass der Waschmaschinenmotor 22 nur in dem Fall anläuft und die Wäschetrommel antreibt, wenn die Gerätetüre gegen öffnen verriegelt ist und eine Verletzungsgefahr ausgeschlossen ist.The parallel to the
Ein Waschprogramm beginnt, indem nach einer gewissen Zeit t gemäß
Kurz nach der Aktivierung des Triacs 31 erreicht das PTC-Bimetallelement 32 seine Betriebstemperatur und verriegelt den Türverschluss, wie in
Eine zusätzliche Steuersoftware zum Abgleich der Schaltzustände der Schaltelemente 21 und 31 stellt sicher, dass wie in
Eine Unterbrechung der Waschmotorbewegung (
Der prinzipielle Aufbau des Motorstromkreises 20 und des Türverriegelungsstromkreises 30 entspricht dem jeweiligen Aufbau wie er für
Der wesentliche Unterschied zwischen Schaltung 40 und Schaltung 10 ist, dass in Schaltung 40 der Türverriegelungsstromkreis 30 hinter dem einzigen gemeinsamen elektronischen Schaltelement 41 mit dem Motorstromkreis 20 verschaltet ist. Dadurch sind der Motorstromkreis 20 und der Türverriegelungsstromkreis 30 gemeinsam durch Aktivierung bloß eines Triacs 41 bestrombar und auch gemeinsam abschaltbar.The essential difference between
Die gleichzeitige Bestromung von Motorstromkreis 20 und Türverriegelungsstromkreis 30 ist allerdings auch entkoppelbar. Diese Entkopplung geschieht durch die Nutzung der Relais 23.1 und 23.2 und ist ein herausragendes Merkmal der vorliegenden Erfindung. Denn während der Türverriegelungsstromkreis 30 aktiv bleibt, ist der Waschmotor 22 und damit der der Antrieb der Wäschetrommel mittels der Relais 23.1 und 23.2 abschaltbar. In diesem Fall bliebe die Waschmaschinentüre beispielsweise aus Sicherheitsgründen verriegelt, obwohl der Motor 22 zeitweilig abgeschaltet ist.However, the simultaneous energization of
In
Ein Waschprogramm beginnt, indem nach einer gewissen Zeit t gemäß
Kurz nach der Aktivierung des Triacs 41 erreicht das PTC-Bimetallelement 32 seine Betriebstemperatur und verriegelt den Türverschluss, wie in
Obwohl gleichzeitig mit dem Türverriegelungsstromkreis 30 auch der Motorstromkreis 20 bestromt wird, setzt wie
Wie
Im Gegensatz zur bekannten Schaltung (
Eine Unterbrechung der Waschmotorbewegung (
Infolge der nachlaufenden Verriegelung durch das PTC-Bimetallelement 32 im Türverriegelungsstromkreis 30 bleibt der Türverschluss bis zum Ende des Waschvorgangs (
Falls der Waschmotor 22 während des Waschprogramms über längere Zeit ausgeschaltet bleiben muss, kann bei ausgeschalteten Relais 23.1 und 23.2 der Türverriegelungsstromkreis durch Einschalten des Triacs 41 auch während des Programms bestromt werden, ohne dass dabei dar Motor angesteuert wird (
Claims (5)
- Circuit for driving an appliance for treating laundry, the circuit having a motor circuit (20) having an AC motor (22) and a door-locking circuit (30), it being possible for the motor circuit (20) and the door-locking circuit (30) to be driven via a single common electronic switching element (41), characterized in that two electromechanical switches (23.1, 23.2) are used in the motor circuit which are connected to the winding of the AC motor rotor (22.1) or to the winding of the AC motor field (22.2) and interrupt the motor circuit (20) in a first switching state and bring about a reversal of the direction of rotation of the AC motor (22) in a second switching state.
- Circuit according to Claim 1, characterized in that the door-locking circuit (30) is switched on when driven via the single common electronic switching element (41), it being possible for the motor circuit (20) to be interrupted at the same time by at least one electromechanical switch (23).
- Circuit according to one of the preceding claims, characterized in that the single electronic switching element (41) is a triac or a thyristor.
- Circuit according to one of the preceding claims, characterized in that the door-locking circuit (30) has a switch (32) and/or a mechanism for locking the appliance door, which switch or mechanism can be driven by a PTC bimetallic element.
- Circuit according to one of the preceding claims, characterized in that the motor circuit (20) has, in addition to the two electromechanical switches (23.1, 23.2) for reversing the direction of rotation of the AC motor (22) and for interrupting the motor current, a further electromechanical switch relay (24) for field reversal purposes, the electromechanical switch (24) for field reversal purposes being connected to the respective other winding of the AC motor (22), i.e. not the winding which is connected to the two electromechanical switches (23.1, 23.2) for reversing the direction of rotation and interrupting the motor current.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06021379T PL1775366T3 (en) | 2005-10-17 | 2006-10-12 | Control circuit for fabric treatment devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510049892 DE102005049892B3 (en) | 2005-10-17 | 2005-10-17 | Circuit for controlling a device for laundry treatment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1775366A1 EP1775366A1 (en) | 2007-04-18 |
EP1775366B1 true EP1775366B1 (en) | 2010-12-22 |
Family
ID=37607434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060021379 Not-in-force EP1775366B1 (en) | 2005-10-17 | 2006-10-12 | Control circuit for fabric treatment devices |
Country Status (7)
Country | Link |
---|---|
US (1) | US7420345B2 (en) |
EP (1) | EP1775366B1 (en) |
CN (1) | CN1952249B (en) |
AT (1) | ATE492675T1 (en) |
DE (2) | DE102005049892B3 (en) |
ES (1) | ES2356753T3 (en) |
PL (1) | PL1775366T3 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE487822T1 (en) * | 2007-06-26 | 2010-11-15 | Arcelik As | WASHER/DRYER |
DE102007031882B4 (en) * | 2007-07-09 | 2016-07-21 | Diehl Ako Stiftung & Co. Kg | Laundry treatment device with door locking element |
ITMC20070141A1 (en) * | 2007-07-10 | 2009-01-11 | Elmarc Societa Per Azioni | SYSTEM AND ELECTRONIC CIRCUIT FOR PROTECTION OF THE DOOR OF WASHING MACHINES OR WASHING MACHINES. |
WO2011031845A1 (en) * | 2009-09-10 | 2011-03-17 | Illinois Tool Works Inc. | Appliance lock with mechanical door sensor |
FR2951332B1 (en) * | 2009-10-12 | 2016-11-11 | Fagorbrandt Sas | CAPACITIVE POWER SUPPLY CIRCUIT FOR AN ELECTRICAL APPARATUS |
TR201007760A1 (en) * | 2010-09-22 | 2012-04-24 | Ar�El�K Anon�M ��Rket� | A washing machine. |
CN102361447B (en) * | 2011-06-01 | 2013-04-10 | 刘德军 | Single-bond control switch having self-locking function |
CN102978886B (en) * | 2012-11-29 | 2015-04-15 | 无锡小天鹅股份有限公司 | Interlock control device and clothes dryer with same |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3597943A (en) * | 1969-06-17 | 1971-08-10 | Braun Inc G A | Sterilized laundry system |
US3745382A (en) * | 1972-02-18 | 1973-07-10 | Rhomega Syst Inc | Solid state timer circuit for controlling the energization time of a load |
IT994158B (en) * | 1973-08-21 | 1975-10-20 | Texas Instruments Italia Spa | LOCKING DEVICE WITH VOLTMETRIC OPERATED THERMAL DELAY SWITCH FOR DOORS |
US4074545A (en) * | 1976-08-26 | 1978-02-21 | Franklin Manufacturing Company | Bimetal lid lock |
US4120013A (en) * | 1977-03-28 | 1978-10-10 | Ametek, Inc. | Laundry machine control system |
US4194182A (en) * | 1977-08-23 | 1980-03-18 | Martin James L | Electrical switch controllable alternatively by an internal timer and by digital information from a remote source |
US4198563A (en) * | 1978-07-24 | 1980-04-15 | Elssner Egon H | Photodetector timer network |
US4344000A (en) * | 1979-03-21 | 1982-08-10 | Dynascan Corporation | Power circuit control programmable timer |
US4349748A (en) * | 1979-03-21 | 1982-09-14 | Dynascan Corporation | Timer and power control system |
GB2048314B (en) | 1979-05-14 | 1983-05-18 | Ti Domestic Appliances Ltd | Electrical machines |
US4494012A (en) * | 1981-10-26 | 1985-01-15 | Intermatic Incorporated | Switch timer |
US4493410A (en) * | 1982-12-27 | 1985-01-15 | The Maytag Company | Double actuation coin slide system |
US4623179A (en) * | 1983-12-27 | 1986-11-18 | The Maytag Company | Door latch for appliance |
DE3423004A1 (en) | 1984-06-22 | 1986-01-02 | Miele & Cie GmbH & Co, 4830 Gütersloh | Control arrangement for a program-controlled washing machine |
US4981024A (en) * | 1989-02-03 | 1991-01-01 | Belco Equipment, Inc. | Apparatus, system, and method for dispensing laundry chemicals |
IT1267583B1 (en) | 1994-09-13 | 1997-02-07 | Zanussi Elettrodomestici | LAUNDRY WASHING MACHINE WITH PERFECTED COMMAND AND CONTROL DEVICES |
US5655394A (en) * | 1996-03-22 | 1997-08-12 | Dirocco, Jr.; Charles J. | Security locking device for coin-operated appliance |
DE19953633A1 (en) * | 1999-11-09 | 2001-05-10 | Diehl Ako Stiftung Gmbh & Co | Control device of a washing machine or dryer |
DE20008430U1 (en) * | 2000-05-10 | 2001-09-13 | Diehl AKO Stiftung GmbH & Co. KG, 88239 Wangen | Electrical control device of a washing machine or dryer |
US7036175B2 (en) * | 2002-02-19 | 2006-05-02 | Maytag Corporation | Washing machine with pay activated bulk detergent dispenser |
-
2005
- 2005-10-17 DE DE200510049892 patent/DE102005049892B3/en not_active Expired - Fee Related
-
2006
- 2006-09-21 US US11/524,689 patent/US7420345B2/en not_active Expired - Fee Related
- 2006-10-12 DE DE200650008546 patent/DE502006008546D1/en active Active
- 2006-10-12 ES ES06021379T patent/ES2356753T3/en active Active
- 2006-10-12 AT AT06021379T patent/ATE492675T1/en active
- 2006-10-12 CN CN2006101321753A patent/CN1952249B/en not_active Expired - Fee Related
- 2006-10-12 EP EP20060021379 patent/EP1775366B1/en not_active Not-in-force
- 2006-10-12 PL PL06021379T patent/PL1775366T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES2356753T3 (en) | 2011-04-12 |
US20070085503A1 (en) | 2007-04-19 |
US7420345B2 (en) | 2008-09-02 |
CN1952249A (en) | 2007-04-25 |
PL1775366T3 (en) | 2011-07-29 |
EP1775366A1 (en) | 2007-04-18 |
DE502006008546D1 (en) | 2011-02-03 |
CN1952249B (en) | 2011-04-27 |
ATE492675T1 (en) | 2011-01-15 |
DE102005049892B3 (en) | 2007-05-03 |
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