EP0204258B1 - Domestic water-conducting apparatus, particularly a washing machine - Google Patents

Domestic water-conducting apparatus, particularly a washing machine Download PDF

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Publication number
EP0204258B1
EP0204258B1 EP86107230A EP86107230A EP0204258B1 EP 0204258 B1 EP0204258 B1 EP 0204258B1 EP 86107230 A EP86107230 A EP 86107230A EP 86107230 A EP86107230 A EP 86107230A EP 0204258 B1 EP0204258 B1 EP 0204258B1
Authority
EP
European Patent Office
Prior art keywords
valve
closure element
change
rest position
washing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86107230A
Other languages
German (de)
French (fr)
Other versions
EP0204258A3 (en
EP0204258A2 (en
Inventor
Elmar Ott
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.)
Aweco Kunststofftechnik Geratebau & Co KG GmbH
Original Assignee
Aweco Kunststofftechnik Geratebau & Co KG 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 Aweco Kunststofftechnik Geratebau & Co KG GmbH filed Critical Aweco Kunststofftechnik Geratebau & Co KG GmbH
Publication of EP0204258A2 publication Critical patent/EP0204258A2/en
Publication of EP0204258A3 publication Critical patent/EP0204258A3/en
Application granted granted Critical
Publication of EP0204258B1 publication Critical patent/EP0204258B1/en
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents
    • D06F39/028—Arrangements for selectively supplying water to detergent compartments
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • the invention relates to a water-bearing domestic appliance, in particular a washing machine, with an electromagnetically actuable inlet valve that withstands the pressure of the water supply network and a downstream distributor valve unit designed for a lower pressure.
  • a domestic appliance of this type namely a washing machine
  • a pressure-resistant and accordingly complex designed check valve is connected in series with a relatively simple and inexpensive so-called water switch (changeover valve).
  • water switch changeover valve
  • the distributor valve unit has a first changeover valve with a first closure member designed as a valve flap and movable between a rest position and a working position, which is pushed into the rest position by means of a spring element and after switching against the spring force by the dynamic pressure in the working position remains that at the output of the first switch valve, which is shut off in the rest position of the closure member, a second switch valve with a second closure member is connected, and that an electrical actuating device is provided which is immediate engages the second closure member and is non-positively coupled to the first closure member by one-sided contact.
  • the force generator of this single actuation device for both changeover valves can be, for example, an electromagnet or a heated bimetal device. It is made use of a special design and dimensioning of the closure member and the spring element of the first changeover valve, after which the closure member remains against the spring force in the switched working position against prevailing flow pressure and does not fall back until the water flow is shut off.
  • the actuating device also has its own return spring, so that when there is no actuating force, the closure member of the downstream changeover valve assumes its rest position regardless of the flow conditions.
  • the possible position variants of the closure members depend on whether the power transmitter is switched on only briefly or over a longer period of time when the inlet valve is open.
  • inlet valve 2 which is designed as a check valve and is actuated by means of a magnet system 3.
  • the inlet valve 2 is followed by a double changeover valve; which is intended for a dishwasher. It has an inlet 21 and three outlets 22, 23 and 24 for the prewash, main wash and fabric softener.
  • the input chamber has two passages located opposite one another, which lead to the outlet 22 and to an intermediate chamber 25. These two passages are optionally covered by a plate-shaped closure member 26, on which a spring 27 acts.
  • a plunger 28 is attached to the closure member 26 and is guided so that it can be moved easily.
  • the intermediate chamber 25 is connected to the outlets 23 and 24 via two passages, which are optionally covered by a second closure member 29.
  • the closure member 29 also has a plunger 30.
  • the two plungers are aligned with one another and can touch on the end face.
  • the plunger 30 is coupled to the armature 33 of a magnet coil 34 via an intermediate lever 31, which is mounted at 32.
  • a spring 35 presses the armature 33 to the left when the magnet is not energized.
  • the magnetic coil 34 is only briefly excited and then switched off again when the flow is predominant.
  • the plunger 30 initially brings both closure members into their opposite positions, but the closure member 29 moves back again after the excitation current has been switched off.

Description

Die Erfindung betrifft ein wasserführendes Hausgerät, insbesondere Waschmaschine, mit einem dem Druck des Wasserversorgungsnetzes standhaltenden elektromagnetisch betätigbaren Einlaßventil und einer diesem nachgeschalteten, auf einen geringeren Druck ausgelegten Verteiler-Ventileinheit.The invention relates to a water-bearing domestic appliance, in particular a washing machine, with an electromagnetically actuable inlet valve that withstands the pressure of the water supply network and a downstream distributor valve unit designed for a lower pressure.

Ein Hausgerät dieser Art, nämlich eine Waschmaschine, ist aus der DE-A 1 460 955 bekannt. Danach ist ein druckfestes und dementsprechend aufwendig konstruiertes Sperrventil mit einer verhältnismäßig einfach und kostengünstig konstruierten sog. Wasserweiche (Umschaltventil) in Reihe geschaltet. Mit diesem Vorschlag wird die Aufgabe, Wasser aus einem Versorgungsnetz wahlweise in zwei verschiedene Einlaßkanäle zu leiten, insgesamt billiger gelöst als mit zwei druckfesten Sperrventilen.A domestic appliance of this type, namely a washing machine, is known from DE-A 1 460 955. Thereafter, a pressure-resistant and accordingly complex designed check valve is connected in series with a relatively simple and inexpensive so-called water switch (changeover valve). With this proposal, the task of routing water from a supply network optionally into two different inlet channels is achieved overall cheaper than with two pressure-resistant check valves.

Wenn man nun die bekannte Anordnung weiterbildet und dem einen Zweig des nicht druckfesten Umschaltventils ein weiteres nicht druckfestes Umschaltventil nachschaltet, um damit drei Kanäle bedienen zu können, so sind insgesamt zwei Betätigungsvorrichtungen für die beiden Umschaltventile erforderlich.If one further develops the known arrangement and the one branch of the non-pressure-proof switch valve is followed by another non-pressure-proof switch valve in order to be able to operate three channels, a total of two actuating devices are required for the two switch valves.

Hier setzt die Erfindung an. Ihr liegt die Aufgabe zugrunde, eine weitere Kostensenkung dadurch zu erreichen, daß zwei strömungsmäßig in Reihe geschaltete Umschaltventile mit einer einzigen Betätigungsvorrichtung gesteuert werden.This is where the invention comes in. It is based on the object of achieving a further cost reduction in that two flow control valves connected in series are controlled with a single actuating device.

Diese Aufgabe wird ausgehend von einem Hausgerät der einleitend bezeichneten Art erfindungsgemäß dadurch gelöst, daß die Verteiler-Ventileinheit ein erstes Umschaltventil mit einem als Ventilklappe ausgebildeten, zwischen einer Ruhestellung und einer Arbeitsstellung beweglichen ersten Verschlußorgan aufweist, welches mittels eines Federelements in die Ruhestellung gedrängt wird und nach Umschaltung entgegen der Federkraft durch den Staudruck in der Arbeitsstellung verbleibt, daß an dem Ausgang des ersten Umschaltventils, der in der Ruhestellung des Verschlußorgans abgesperrt ist, ein zweites Umschaltventil mit einem zweiten Verschlußorgan angeschlossen ist, und daß eine elektrische Betätigungsvorrichtung vorgesehen ist, die unmittelbar an dem zweiten Verschlußorgan angreift und durch einseitige Anlage kraftschlüssig mit dem ersten Verschlußorgan gekoppelt ist.This object is achieved on the basis of a domestic appliance of the type described in the introduction in that the distributor valve unit has a first changeover valve with a first closure member designed as a valve flap and movable between a rest position and a working position, which is pushed into the rest position by means of a spring element and after switching against the spring force by the dynamic pressure in the working position remains that at the output of the first switch valve, which is shut off in the rest position of the closure member, a second switch valve with a second closure member is connected, and that an electrical actuating device is provided which is immediate engages the second closure member and is non-positively coupled to the first closure member by one-sided contact.

Der Kraftgeber dieser einzigen Betätigungsvorrichtung für beide Umschaltventile kann beispielsweise ein Elektromagnet oder eine beheizte Bimetallvorrichtung sein. Es wird von einer besonderen Ausbildung und Bemessung des Verschlußorgans und des Federelements des ersten Umschaltventils Gebrauch gemacht, wonach das Verschlußorgan bei vorherrschendem Fließdruck entgegen seiner Federkraft in der umgeschalteten Arbeitsstellung verbleibt und erst nach Absperren des Wasserstromes wieder zurückfällt. Auch die Betätigungsvorrichtung hat eine eigene Rückstellfeder, so daß bei fehlender Betätigungskraft das Verschlußorgan des nachgeschalteten Umschaltventils unabhängig von den Strömungsverhältnissen seine Ruhestellung einnimmt. Die möglichen Stellungsvarianten der Verschlußorgane hängen davon ab, ob bei geöffnetem Einlaßventil der Kraftgeber nur kurzzeitig oder über einen längeren Zeitraum eingeschaltet wird.The force generator of this single actuation device for both changeover valves can be, for example, an electromagnet or a heated bimetal device. It is made use of a special design and dimensioning of the closure member and the spring element of the first changeover valve, after which the closure member remains against the spring force in the switched working position against prevailing flow pressure and does not fall back until the water flow is shut off. The actuating device also has its own return spring, so that when there is no actuating force, the closure member of the downstream changeover valve assumes its rest position regardless of the flow conditions. The possible position variants of the closure members depend on whether the power transmitter is switched on only briefly or over a longer period of time when the inlet valve is open.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer schematischen Zeichnung erläutert, die einen Längsschnitt eines Doppelumschaltventils zeigt.An embodiment of the invention is explained below with reference to a schematic drawing, which shows a longitudinal section of a double changeover valve.

In der vom Wasserversorgungsnetz kommenden Zuleitung 1 ist ein als Sperrventil ausgebildetes Einlaßventil 2 angeordnet, das mittels eines Magnetsystems 3 betätigt wird. Dem Einlaßventil 2 ist ein Doppelumschaltventil nachgeschaltet; das für einen Geschirrspüler vorgesehen ist. Es hat einen Einlaß 21 und drei Auslässe 22, 23 und 24 für die Vorwäsche, Hauptwäsche und für das Weichspülen. Die Eingangskammer hat zwei einander gegenüberliegende Durchlässe, welche zum Auslaß 22 und zu einer Zwischenkammer 25 führen. Diese beiden Durchlässe werden wahlweise von einem tellerförmigen Verschlußorgan 26 abgedeckt, auf das eine Feder 27 wirkt. An dem Verschlußorgan 26 ist ein Stößel 28 befestigt, der leichtgängig verschiebbar geführt ist. Die Zwischenkammer 25 ist über zwei Durchlässe, welche durch ein zweites Verschlußorgan 29 wahlweise abgedeckt werden, mit den Auslässen 23 und 24 verbunden. Auch das Verschlußorgan 29 hat einen Stößel 30. Die beiden Stößel fluchten miteinander und können sich stirnseitig berühren. Der Stößel 30 ist über einen Zwischenhebel 31, der bei 32 gelagert ist, mit dem Anker 33 einer Magnetspule 34 gekoppelt. Eine Feder 35 drückt den Anker 33 bei nicht erregtem Magnet nach links.In the supply line 1 coming from the water supply network there is an inlet valve 2 which is designed as a check valve and is actuated by means of a magnet system 3. The inlet valve 2 is followed by a double changeover valve; which is intended for a dishwasher. It has an inlet 21 and three outlets 22, 23 and 24 for the prewash, main wash and fabric softener. The input chamber has two passages located opposite one another, which lead to the outlet 22 and to an intermediate chamber 25. These two passages are optionally covered by a plate-shaped closure member 26, on which a spring 27 acts. A plunger 28 is attached to the closure member 26 and is guided so that it can be moved easily. The intermediate chamber 25 is connected to the outlets 23 and 24 via two passages, which are optionally covered by a second closure member 29. The closure member 29 also has a plunger 30. The two plungers are aligned with one another and can touch on the end face. The plunger 30 is coupled to the armature 33 of a magnet coil 34 via an intermediate lever 31, which is mounted at 32. A spring 35 presses the armature 33 to the left when the magnet is not energized.

Wenn in der gezeichneten Stellung der Einzelteile und bei geöffnetem Einlaßventil 2 der Wasserzulauf zum Einlaß 21 geöffnet wird, strömt das Wasser beim Auslaß 22 heraus. Wird die Magnetspule 34 erregt, so wandert der Stößel 30 nach links und schiebt auch den Stößel 28 mit, so daß beide Verschlußorgane 26 und 29 ihre gezeichneten Stellungen wechseln. Das Wasser strömt jetzt zur Hauptwäsche am Auslaß 23 heraus. Wird die Magnetspule 34 wieder entregt, so legt sich das Verschlußorgan 29 wieder nach rechts, das Verschlußorgan 26 verbleibt jedoch zunächst in seiner linken Stellung, da die Feder 27 dieses Verschlußorgans entgegen dem Fließdruck nicht abheben kann. Erst nach Sperrung der Wasserströmung durch Schließen des Einlaßventils 2 legt sich auch das Verschlußorgan 26 nach rechts. Um zum Weichspülen das Wasser am Auslaß 24 herausströmen zu lassen, wird bei vorherrschender Strömung die Magnetspule 34 nur kurzzeitig erregt und dann wieder abgeschaltet. Dabei werden mittels des Stößels 30 zunächst beide Verschlußorgane in ihre entgegengesetzten Stellungen gebracht, das Verschlußorgan 29 wandert jedoch nach dem Abschalten des Erregerstroms wieder zurück.If the water inlet to the inlet 21 is opened in the drawn position of the individual parts and with the inlet valve 2 open, the water flows out at the outlet 22. If the solenoid 34 is excited, the plunger 30 moves to the left and also pushes the plunger 28, so that both locking members 26 and 29 change their positions shown. The water now flows out to the main wash at outlet 23. If the solenoid 34 is de-energized again, the closure member 29 lies to the right again, but the closure member 26 initially remains in its left position, since the spring 27 of this closure member cannot lift up against the flow pressure. Only after the water flow has been blocked by closing the inlet valve 2 does the closure member 26 also lie to the right. In order to allow the water to flow out at the outlet 24 for soft rinsing, the magnetic coil 34 is only briefly excited and then switched off again when the flow is predominant. The plunger 30 initially brings both closure members into their opposite positions, but the closure member 29 moves back again after the excitation current has been switched off.

Auf diese Weise kann durch entsprechende Zeitsteuerung des Erregerstroms ein einziger Magnet die gewünschte Ventilstellung herbeiführen. Dies ermöglicht eine erhebliche Verbilligung der Umschaltventileinheit.In this way, a single magnet can bring about the desired valve position by appropriate time control of the excitation current. This enables the changeover valve unit to become considerably cheaper.

Claims (1)

  1. Water-conducting domestic appliance, especially washing machine, having an electro-magnetically operable inlet valve which withstands the pressure of the water supply main and a distributor-valve unit following this and designed for a lower pressure, characterised in that the distributor-valve unit comprises a first change-over valve with a first closure element (26) formed as valve flap and movable between a rest position and a working position, which element is pressed by means of a spring element (27) into the rest position and after change-over remains in the working position against the spring force due to the back pressure, in that a second change-over valve with a second closure element (29) is connected to the outlet (25) of the first change-over valve which is closed off when the closure element (26) is in the rest position, and in that an electric actuating device (33, 34) is provided which acts directly on the second closure element (29) and is coupled in force-engaging manner with the first closure element (26) by unilateral abutment.
EP86107230A 1985-06-04 1986-05-28 Domestic water-conducting apparatus, particularly a washing machine Expired EP0204258B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853519897 DE3519897A1 (en) 1985-06-04 1985-06-04 WATER-CONDUCTING HOME APPLIANCE, IN PARTICULAR WASHING MACHINE
DE3519897 1985-06-04

Publications (3)

Publication Number Publication Date
EP0204258A2 EP0204258A2 (en) 1986-12-10
EP0204258A3 EP0204258A3 (en) 1987-10-07
EP0204258B1 true EP0204258B1 (en) 1989-05-24

Family

ID=6272336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107230A Expired EP0204258B1 (en) 1985-06-04 1986-05-28 Domestic water-conducting apparatus, particularly a washing machine

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EP (1) EP0204258B1 (en)
DE (2) DE3519897A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20010238A1 (en) * 2001-02-07 2002-08-07 T & P Spa DIVERTER VALVE FOR WASHING MACHINE AND RELATED METHODS OF APPLICATION
ITTO20010943A1 (en) * 2001-10-05 2003-04-05 Elbi Int Spa DEVIATION VALVE UNIT, ESPECIALLY FOR A DISHWASHER-DISHWASHING MACHINE.
DE102006060035A1 (en) * 2006-12-19 2008-06-26 BSH Bosch und Siemens Hausgeräte GmbH Safety device for connecting a household appliance carrying water to a water supply network
DE102009028481B3 (en) * 2009-08-12 2011-06-16 BSH Bosch und Siemens Hausgeräte GmbH Water-conducting household appliance with a switching valve
CN109750456B (en) * 2017-11-03 2022-09-23 青岛海尔洗涤电器有限公司 Laundry treating agent feeding device, washing machine and control method thereof
CN110403554B (en) * 2018-04-27 2022-09-27 三花亚威科电器设备（芜湖）有限公司 Dispenser and dishwasher
DE102019212835A1 (en) * 2019-08-27 2021-03-04 BSH Hausgeräte GmbH Control of a valve device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1460955A1 (en) * 1963-05-30 1969-03-27 Walter Holzer Automatically controlled washing machine with one or more detergent containers and water shut-off devices
DE1247257B (en) * 1963-12-16 1967-08-17 Siemens Elektrogeraete Gmbh Household appliance controlled by a program control unit with several water inlet routes
DE1610142A1 (en) * 1967-05-19 1971-04-08 Siemens Elektrogeraete Gmbh Household appliance with several water inlet routes
DE1728233A1 (en) * 1968-09-14 1972-03-23 Bosch Hausgeraete Gmbh Dishwasher
DE3204252A1 (en) * 1982-02-08 1983-08-18 Miele & Cie GmbH & Co, 4830 Gütersloh DETERGENT DISCHARGE DEVICE FOR WASHING MACHINES

Also Published As

Publication number Publication date
DE3663544D1 (en) 1989-06-29
DE3519897A1 (en) 1986-12-04
EP0204258A3 (en) 1987-10-07
EP0204258A2 (en) 1986-12-10

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Owner name: ING. C. GREGORJ S.P.A.