EP0437735A1 - Drum washing machine - Google Patents
Drum washing machine Download PDFInfo
- Publication number
- EP0437735A1 EP0437735A1 EP90124008A EP90124008A EP0437735A1 EP 0437735 A1 EP0437735 A1 EP 0437735A1 EP 90124008 A EP90124008 A EP 90124008A EP 90124008 A EP90124008 A EP 90124008A EP 0437735 A1 EP0437735 A1 EP 0437735A1
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- EP
- European Patent Office
- Prior art keywords
- tub
- washing machine
- drum
- compressed air
- machine according
- 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.)
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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
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
Definitions
- the invention relates to a drum washing machine with a tub for receiving the washing liquor, with a fresh water supply, a detergent dispenser and a feed line to the tub, with a venting device for the tub and with a device for preventing the washing liquor outflow during the washing process.
- the conventional method in which the tub is emptied by a tub pump, has numerous disadvantages.
- the suction behavior of the pump is disturbed by the mostly unavoidable foam formation. This results in delays in the emptying process and disturbing pumping and slurping noises.
- drain pumps or solenoid valves are not inconsiderable cost factors in the production of washing machines.
- washing machine In a washing machine (DE - GM 80 08 161), it is known to empty the washing liquid into an intermediate store via a drain opening in the tub. If the suds container is empty, a valve to the suds container is closed and the washing liquid can be conveyed from the intermediate store into the drain by means of compressed air.
- the invention has for its object to accelerate the emptying process of the tub and to simplify it in the area of the drainage path.
- the advantages that can be achieved with the design according to the invention consist in the fact that the emptying process takes place quickly due to the excess pressure forming in the tub and thus a rapid spin-up can subsequently be achieved.
- the repeated brief spin-on, with which a water jacket or foam formation is to be prevented, is superfluous. This reduces engine wear and stress on mechanical and electrical components.
- Due to the absence of a drain pump or a solenoid valve in the water drain the drain line can be designed to be streamlined. As a result, a high flow rate is achieved and the unimpeded conveyance of fluff and threads is possible. There can be no blockages in the drainage area. Because the compressed air is fed directly into the tub, an intermediate store with a solenoid valve in the drain path is not required.
- the jacket perforation of the inner drum has one compared to conventional ones Washing machine reduced diameter of about 2 mm. If the door sealing ring is additionally designed like a labyrinth, larger foreign objects can no longer get into the drainage paths. This eliminates the need for a fluff filter or a heavy trap.
- Fig. 1 A schematic representation of the side view of the tub of a washing machine with an emptying device equipped according to the invention and with a drain line, the opening of which is above the maximum liquid level;
- Fig. 2 A similar design as in illustration 1, but with a ball valve
- Fig. 3 A section of the cross section through the tub and washing drum edge with a bellows seal.
- Fig. 1 the side view of a tub (1) is shown, which is filled with wash liquor.
- the tub (1) receives a washing drum (2).
- the lateral surface (3) of this washing drum has a smaller perforation of approximately 2 mm in diameter than conventional washing machines.
- the detergent supply line (5) opens into the upper area of the end face (4) of the tub (1).
- water from the fresh water line (6) and detergent from the detergent dispenser drawer (7) are introduced into the tub.
- a valve is located in front of the opening (8) of the detergent supply line (5) on the side of the tub (9), here in the form of a flap.
- the vent line (11) opens into the upper part of the tub (10).
- a compressed air generator in the form of a centrifugal compressor (12) is integrated in the ventilation line (11).
- Another opening of the tub wall (10) is provided with a safety valve (13), which opens automatically if there is too much overpressure in the tub.
- the drain opening (14) to which the drain pipe (15) is connected is located in the underside of the tub wall (10).
- the drain line (15) is guided over the height of the maximum liquid level (16). This prevents the suds container (1) from emptying automatically and unintentionally at normal pressure.
- a support bearing (18) is located on the rear wall (17) of the washing machine.
- Fig. 3 shows a section of the tub rim (20) with the bellows seal (21) attached there.
- the tub On its end face (4), the tub has an opening for filling laundry, which is closed by a door, not shown.
- a bellows seal (21) is located between the door and the tub (1).
- This bellows seal (21) has a lip-shaped extension (23) in the vicinity of its attachment (22) on the edge of the tub (20).
- the function of the arrangement shown is as follows: after the washing process has ended, the emptying process of the tub (1) begins.
- the centrifugal compressor (12) generates an overpressure in the tub (1). Due to the excess pressure, a valve (9) closes the opening (8) of the detergent supply line (5) and prevents pressure equalization. Due to the overpressure forming in the tub, the washing liquor is pressed out of the tub (1) steadily and quickly through the drain line (15).
- a safety valve (13) provides pressure relief if the excess pressure in the tub (1) exceeds a limit. Since the bellows seal (21) expands as a result of the excess pressure when the tub (1) is pressurized, the tub (1) moves in the longitudinal direction. To avoid this, it must be fixed.
- a support bearing (18) on the rear wall of the washing machine serves this purpose. The reduction in the hole diameter of the holes in the drum surface (3) and the lip-shaped extension (23) of the bellows seal (21) prevent large foreign objects from getting into the drainage paths.
- the ball valve (19) closes the drain line (15) and prevents the washing-in Detergent in the drain system. This ensures better utilization of the detergent entered.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Trommelwaschmaschine mit einem Laugenbehälter zur Aufnahme der Waschflotte, mit einer Frischwasserzuführung, einer Waschmitteleinspülvorrichtung sowie einer Zuleitung zum Laugenbehälter, mit einer Entlüftungsvorrichtung für den Laugenbehälter und mit einer Vorrichtung zur Verhinderung des Waschlaugenabflusses während des Waschvorgangs.The invention relates to a drum washing machine with a tub for receiving the washing liquor, with a fresh water supply, a detergent dispenser and a feed line to the tub, with a venting device for the tub and with a device for preventing the washing liquor outflow during the washing process.
Beim Waschen in Trommelwaschmaschinen ist es üblich, das gebrauchte Wasch-und Spülwasser nach jedem Waschgang aus dem Laugenbehälter in das öffentliche Ablaufsystem zu entleeren. Hierzu bedient man sich einer Laugenpumpe oder der Schwerkraft, wobei das Wasser durch ein schaltbares Magnetventil abläuft.When washing in drum washing machines, it is customary to empty the used washing and rinsing water from the tub into the public drain system after each washing cycle. To do this, use a drain pump or gravity, the water draining through a switchable solenoid valve.
Die konventionelle Methode, bei der der Laugenbehälter durch eine Laugenpumpe entleert wird, besitzt zahlreiche Nachteile. Durch die meist nicht zu vermeidende Schaumbildung wird das Ansaugverhalten der Pumpe gestört. Hierdurch kommt es zu Verzögerungen des Entleerungsvorganges und zu störenden Pump-und Schlürfgeräuschen. Daneben sind Laugenpumpen oder Magnetventile nicht unerhebliche Kostenfaktoren bei der Produktion von Waschmaschinen.The conventional method, in which the tub is emptied by a tub pump, has numerous disadvantages. The suction behavior of the pump is disturbed by the mostly unavoidable foam formation. This results in delays in the emptying process and disturbing pumping and slurping noises. In addition, drain pumps or solenoid valves are not inconsiderable cost factors in the production of washing machines.
Bei einer Waschmaschine (DE - GM 80 08 161) ist es bekannt, die Waschflüssigkeit über eine Ablauföffnung des Laugenbehälters in einen Zwischenspeicher zu entleeren. Ist der Laugenbehälter leer, wird ein Ventil zum Laugenbehälter geschlossen und die Waschflüssigkeit kann mittels Druckluft aus dem Zwischenspeicher in den Abfluß befördert werden.In a washing machine (DE - GM 80 08 161), it is known to empty the washing liquid into an intermediate store via a drain opening in the tub. If the suds container is empty, a valve to the suds container is closed and the washing liquid can be conveyed from the intermediate store into the drain by means of compressed air.
Bei der hier beschriebenen Maßnahme entsteht für den Zwischenspeicher ein erhöhter Platzbedarf innerhalb der Waschmaschine. Die benötigten Ventile und der Zwischenspeicher führen zu einem komplizierten und teuren Ablaufsystem. Weiterhin werden Service-Arbeiten erschwert und es könnten Probleme mit Verstopfungen durch Flusen oder Kleinteile auftreten, die sich im Leitungsweg festsetzen.With the measure described here arises for the Buffer storage requires more space within the washing machine. The required valves and the buffer store lead to a complicated and expensive drain system. Service work is also made more difficult and there could be problems with clogging due to fluff or small parts that get stuck in the pipeline.
Der Erfindung liegt die Aufgabe zugrunde, den Entleerungsvorgang des Laugenbehälters zu beschleunigen und im Bereich des Ablaufweges zu vereinfachen.The invention has for its object to accelerate the emptying process of the tub and to simplify it in the area of the drainage path.
Erfindungsgemäß wird diese Aufgabe mit den im Patentanspruch 1 angegebenen Merkmalen gelöst. Zweckmäßige Weiterbildungen und Ausgestaltungen ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this object is achieved with the features specified in
Die mit der erfindungsgemäßen Ausbildung erreichbaren Vorteile bestehen darin, daß durch den im Laugenbehälter sich ausbildenden Überdruck der Entleerungsvorgang zügig vonstatten geht und damit anschließend ein schneller Schleuderhochlauf zu erreichen ist. Das wiederholte kurze Anschleudern, mit dem eine Wassermantel- oder Schaumausbildung verhindert werden soll, erübrigt sich. Hierdurch wird der Verschleiß des Motors und die Belastung von mechanischen und elektrischen Bauteilen vermindert. Durch das Nichtvorhandensein einer Laugenpumpe oder eines Magnetventils im Wasserablauf kann die Ablaufleitung strömungsgünstig ausgebildet werden. Hierdurch wird eine hohe Strömungsgeschwindigkeit erreicht und die ungehinderte Förderung von Flusen und Fäden ist möglich. Es können somit keine Verstopfungen im Ablaufbereich auftreten. Durch das direkte Zuführen der Druckluft in den Laugenbehälter wird ein Zwischenspeicher mit einem Magnetventil im Ablaufweg nicht benötigt.The advantages that can be achieved with the design according to the invention consist in the fact that the emptying process takes place quickly due to the excess pressure forming in the tub and thus a rapid spin-up can subsequently be achieved. The repeated brief spin-on, with which a water jacket or foam formation is to be prevented, is superfluous. This reduces engine wear and stress on mechanical and electrical components. Due to the absence of a drain pump or a solenoid valve in the water drain, the drain line can be designed to be streamlined. As a result, a high flow rate is achieved and the unimpeded conveyance of fluff and threads is possible. There can be no blockages in the drainage area. Because the compressed air is fed directly into the tub, an intermediate store with a solenoid valve in the drain path is not required.
In einer vorteilhaften Ausgestaltung besitzt die Mantellochung der Innentrommel einen gegenüber herkömmlichen Waschmaschinen verkleinerten Durchmesser von etwa 2 mm. Wird zusätzlich der Türdichtring labyrinthartig ausgebildet, so können größere Fremdkörper nicht mehr in die Ablaufwege gelangen. Hierdurch erübrigt sich ein Flusensieb oder eine Schwerkörperfalle.In an advantageous embodiment, the jacket perforation of the inner drum has one compared to conventional ones Washing machine reduced diameter of about 2 mm. If the door sealing ring is additionally designed like a labyrinth, larger foreign objects can no longer get into the drainage paths. This eliminates the need for a fluff filter or a heavy trap.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachstehend näher erläutert.An embodiment of the invention is shown purely schematically in the drawings and is explained in more detail below.
Es zeigen:Show it:
Fig. 1: Eine schematische Darstellung der Seitenansicht des Laugenbehälters einer Waschmaschine mit einer erfindungsgemäß ausgestatteten Entleerungsvorrichtung und mit einer Ablaufleitung, deren Öffnung über der maximalen Flüssigkeitshöhe liegt;Fig. 1: A schematic representation of the side view of the tub of a washing machine with an emptying device equipped according to the invention and with a drain line, the opening of which is above the maximum liquid level;
Fig. 2: Eine ähnliche Ausführung wie in Darstellung 1, jedoch mit einem Kugelventil;Fig. 2: A similar design as in
Fig. 3: Eine Ausschnitt des Querschnitts durch den Laugenbehälter- und Waschtrommelrand mit einer Faltenbalgdichtung.Fig. 3: A section of the cross section through the tub and washing drum edge with a bellows seal.
In Fig. 1 ist die Seitenansicht eines Laugenbehälters (1) dargestellt, der mit Waschlauge gefüllt ist. Der Laugenbehälter (1) nimmt eine Waschtrommel (2) auf. Die Mantelfläche (3) dieser Waschtrommel besitzt eine gegenüber herkömmlichen Waschmaschinen geringere Lochung von etwa 2 mm Durchmesser. In den oberen Bereich der Stirnseite (4) des Laugenbehälters (1) mündet die Waschmittelzuführungsleitung (5). Hier wird in den Laugenbehälter Wasser aus der Frischwasserleitung (6) und Waschmittel aus dem Waschmitteleinspülkasten (7) eingeleitet. Vor der laugenbehälterseitigen Öffnung (8) der Waschmittelzuführungsleitung (5) befindet sich ein Ventil (9), hier in Form einer Klappe ausgebildet.In Fig. 1 the side view of a tub (1) is shown, which is filled with wash liquor. The tub (1) receives a washing drum (2). The lateral surface (3) of this washing drum has a smaller perforation of approximately 2 mm in diameter than conventional washing machines. The detergent supply line (5) opens into the upper area of the end face (4) of the tub (1). Here, water from the fresh water line (6) and detergent from the detergent dispenser drawer (7) are introduced into the tub. A valve is located in front of the opening (8) of the detergent supply line (5) on the side of the tub (9), here in the form of a flap.
In den oberen Teil der Laugenbehälterwand (10) mündet die Entlüftungsleitung (11). In der Entlüftungsleitung (11) ist ein Drucklufterzeuger in Form eines Kreiselverdichters (12) integriert. Eine weitere Öffnung Laugenbehälterwand (10) ist mit einem Sicherheitsventil (13) versehen, welches sich bei zu starkem Überdruck im Laugenbehälter selbsttätig öffnet.The vent line (11) opens into the upper part of the tub (10). A compressed air generator in the form of a centrifugal compressor (12) is integrated in the ventilation line (11). Another opening of the tub wall (10) is provided with a safety valve (13), which opens automatically if there is too much overpressure in the tub.
In der Unterseite der Laugenbehälterwand (10) befindet sich die Ablauföffnung (14), an der die Ablaufleitung (15) angeschlossen ist. Die Ablaufleitung (15) wird über die Höhe des maximalen Flüssigkeitsstands (16) geführt. Dadurch wird ein selbsttätiges und ungewolltes Entleeren des Laugenbehälters (1) bei Normaldruck verhindert. An der Rückwand (17) der Waschmaschine befindet sich ein Stützlager (18).The drain opening (14) to which the drain pipe (15) is connected is located in the underside of the tub wall (10). The drain line (15) is guided over the height of the maximum liquid level (16). This prevents the suds container (1) from emptying automatically and unintentionally at normal pressure. A support bearing (18) is located on the rear wall (17) of the washing machine.
Beil Ausführungsbeispiel nach Fig. 2 befindet sich ein Kugelventil (19) in der Ablaufleitung (15).In the exemplary embodiment according to FIG. 2 there is a ball valve (19) in the drain line (15).
Fig. 3 zeigt einen Ausschnitt des Laugenbehälterrandes (20) mit der dort befestigten Faltenbalgdichtung (21). An seiner Stirnseite (4) besitzt der Laugenbehälter eine Öffnung zum Einfüllen von Wäsche, welche durch eine nicht dargestellte Tür verschlossen ist. Zwischen Tür und Laugenbehälter (1) befindet sich eine Faltenbalgdichtung (21). Diese Faltenbalgdichtung (21) besitzt in der Nähe ihrer Befestigung (22) am Laugenbehälterrand (20) einen lippenförmigen Fortsatz (23).Fig. 3 shows a section of the tub rim (20) with the bellows seal (21) attached there. On its end face (4), the tub has an opening for filling laundry, which is closed by a door, not shown. A bellows seal (21) is located between the door and the tub (1). This bellows seal (21) has a lip-shaped extension (23) in the vicinity of its attachment (22) on the edge of the tub (20).
Die Funktion der gezeigten Anordnung ist wie folgt: Nach Beendigung des Waschvorgangs setzt der Entleerungsvorgang des Laugenbehälters (1) ein. Der Kreiselverdichter (12) erzeugt hierzu einen Überdruck im Laugenbehälter (1). Durch den Überdruck verschließt ein Ventil (9) die Öffnung (8) der Waschmittelzuführungsleitung (5) und verhindert einen Druckausgleich. Durch den sich im Laugenbehälter ausbildenden Überdruck wird die Waschlauge stetig und zügig durch die Ablaufleitung (15) aus dem Laugenbehälter (1) gedrückt. Ein Sicherheitsventil (13) sorgt für eine Druckentlastung, wenn der Überdruck im Laugenbehälter (1) einen Grenzwert überschreitet. Da sich bei Druckbeaufschlagung des Laugenbehälters (1) die Faltenbalgdichtung (21) durch den Überdruck ausdehnt, kommt es zu einer Bewegung des Laugenbehälters (1) in Längsrichtung. Um das zu vermeiden, muß er fixiert werden. Hierzu dient ein Stützlager (18) an der Rückwand der Waschmaschine. Die Verringerung des Lochdurchmessers der Löcher in der Trommelmantelfläche (3) und der lippenförmige Fortsatz (23) der Faltenbalgdichtung (21) verhindern, daß große Fremdkörper in die Ablaufwege geraten.The function of the arrangement shown is as follows: after the washing process has ended, the emptying process of the tub (1) begins. The centrifugal compressor (12) generates an overpressure in the tub (1). Due to the excess pressure, a valve (9) closes the opening (8) of the detergent supply line (5) and prevents pressure equalization. Due to the overpressure forming in the tub, the washing liquor is pressed out of the tub (1) steadily and quickly through the drain line (15). A safety valve (13) provides pressure relief if the excess pressure in the tub (1) exceeds a limit. Since the bellows seal (21) expands as a result of the excess pressure when the tub (1) is pressurized, the tub (1) moves in the longitudinal direction. To avoid this, it must be fixed. A support bearing (18) on the rear wall of the washing machine serves this purpose. The reduction in the hole diameter of the holes in the drum surface (3) and the lip-shaped extension (23) of the bellows seal (21) prevent large foreign objects from getting into the drainage paths.
Wird in den Laugenbehälter (1) gemäß Fig. 2 zunächst nur Wasser eingeleitet und das Waschmittel erst nach Einleitung einer Wassermenge eingespült, die die Ablaufleitung (15) füllt, dann verschließt das Kugelventil (19) die Ablaufleitung (15) und verhindert ein Einspülen des Waschmittels in das Ablaufsystem. Hierdurch ist eine bessere Ausnutzung des eingegebenen Waschmittels gewährleistet.If initially only water is introduced into the tub (1) according to FIG. 2 and the detergent is only flushed in after introducing a quantity of water which fills the drain line (15), then the ball valve (19) closes the drain line (15) and prevents the washing-in Detergent in the drain system. This ensures better utilization of the detergent entered.
Claims (8)
daß in der Waschmaschine eine Vorrichtung zur Erzeugung von Druckluft angeordnet ist und daß der Laugenbehälter (1) durch Einleitung der von dieser Vorrichtung erzeugten Druckluft entleert wird.Drum washing machine with a tub for receiving the washing liquor, with a fresh water supply, a detergent dispenser and a feed line to the tub, with a venting device for the tub and with a device for preventing the washing liquor outflow during the washing process, characterized in that
that a device for generating compressed air is arranged in the washing machine and that the tub (1) is emptied by introducing the compressed air generated by this device.
geführt wird und daß alle Öffnungen des Laugenbehälters oberhalb der maximalen Flüssigkeitshöhe, welche nicht zur Einleitung von Druckluft dienen, durch Vorrichtungen verschließbar sind, die ein Entweichen der Druckluft aus dem Laugenbehälter verhindern.Drum washing machine according to claim 1, characterized in that the compressed air via a feed line into the tub
is performed and that all openings of the tub above the maximum liquid level, which are not used to introduce compressed air, can be closed by devices that prevent the compressed air from escaping from the tub.
daß die Einleitung der Druckluft in den Laugenbehälter (1) über die Entlüftungsleitung (11) erfolgt.Drum washing machine according to one of claims 1 or 2, characterized in that
that the introduction of the compressed air into the tub (1) via the vent line (11).
daß der Waschlaugenabfluß während des Waschvorgangs durch eine über den maximalen Flüssigkeitstand (16) im Laugenbehälter (1) geführte Ablaufleitung (15) verhindert wird.Drum washing machine according to one of claims 1 to 3, characterized in
that the washing liquor outflow during the washing process is prevented by a drain line (15) guided over the maximum liquid level (16) in the tub (1).
daß ein selbsttätig schließendes Rückschlagventil im Laugenbehälterablauf oder ein Kugelventil (19) in der Ablaufleitung (15) die Ablauföffnung (14) beim Waschvorgang verschließt.Drum washing machine according to one of claims 1 to 3, characterized in
that an automatically closing check valve in the tub drain or a ball valve (19) in the drain line (15) closes the drain opening (14) during the washing process.
daß die Mantellochung der Trommel einen Durchmesser von etwa 2 Millimetern besitzt.Drum washing machine according to one of claims 1 to 5, characterized in that
that the jacket perforation of the drum has a diameter of about 2 millimeters.
daß zwischen der Tür zum Verschließen der stirnseitigen Laugenbehälteröffnung und dem Laugenbehälterrand (20) eine Faltenbalgdichtung (21) angeordnet ist und daß die Faltenbalgdichtung (21) einen zur Waschtrommel (2) gerichteten lippenförmigen Fortsatz (23) besitzt.Drum washing machine according to one of claims 1 to 6, characterized in that
that a bellows seal (21) is arranged between the door for closing the front opening of the tub and the tub rim (20) and that the bellows seal (21) has a lip-shaped extension (23) directed towards the washing drum (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT90124008T ATE104377T1 (en) | 1989-12-23 | 1990-12-13 | DRUM WASHING MACHINE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3942979A DE3942979A1 (en) | 1989-12-23 | 1989-12-23 | DRUM WASHING MACHINE |
| DE3942979 | 1989-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0437735A1 true EP0437735A1 (en) | 1991-07-24 |
| EP0437735B1 EP0437735B1 (en) | 1994-04-13 |
Family
ID=6396452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90124008A Expired - Lifetime EP0437735B1 (en) | 1989-12-23 | 1990-12-13 | Drum washing machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0437735B1 (en) |
| AT (1) | ATE104377T1 (en) |
| DE (2) | DE3942979A1 (en) |
| ES (1) | ES2051446T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2382821B (en) * | 2001-07-28 | 2005-07-27 | John Herbert North | Washing machine casing mounting |
| CN103898717A (en) * | 2012-12-27 | 2014-07-02 | 东部大宇电子株式会社 | Drain device for washing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR734974A (en) * | 1932-04-11 | 1932-10-31 | Diebold Et Cie | Tilting washing machine and autoclave |
| DE8008161U1 (en) * | 1980-03-25 | 1980-09-18 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Drum washing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH363318A (en) * | 1957-09-04 | 1962-07-31 | Homap Etablissement | Process for washing textile articles of daily use in a washing machine and washing machine for carrying out the process |
| DE1585594A1 (en) * | 1967-06-23 | 1970-10-15 | Erich Brueckner | Device to prevent foam, suds or water from drum washing machines from leaking onto the floor |
| DE8614919U1 (en) * | 1986-06-03 | 1989-10-26 | Bosch-Siemens Hausgeräte GmbH, 8000 München | Washing machine with a drain opening located at the bottom of its tub |
| ES1000357Y (en) * | 1986-09-26 | 1988-07-01 | Mayc, S.A. | EVACUATION DEVICE FOR A CLOTHES WASHING MACHINE |
-
1989
- 1989-12-23 DE DE3942979A patent/DE3942979A1/en not_active Withdrawn
-
1990
- 1990-12-13 DE DE59005361T patent/DE59005361D1/en not_active Expired - Fee Related
- 1990-12-13 ES ES90124008T patent/ES2051446T3/en not_active Expired - Lifetime
- 1990-12-13 AT AT90124008T patent/ATE104377T1/en not_active IP Right Cessation
- 1990-12-13 EP EP90124008A patent/EP0437735B1/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR734974A (en) * | 1932-04-11 | 1932-10-31 | Diebold Et Cie | Tilting washing machine and autoclave |
| DE8008161U1 (en) * | 1980-03-25 | 1980-09-18 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Drum washing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2382821B (en) * | 2001-07-28 | 2005-07-27 | John Herbert North | Washing machine casing mounting |
| CN103898717A (en) * | 2012-12-27 | 2014-07-02 | 东部大宇电子株式会社 | Drain device for washing machine |
| EP2749686A1 (en) * | 2012-12-27 | 2014-07-02 | Dongbu Daewoo Electronics Corporation | Drain device for washing machine |
| CN103898717B (en) * | 2012-12-27 | 2016-06-08 | 东部大宇电子株式会社 | The drainage arrangement of washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE104377T1 (en) | 1994-04-15 |
| EP0437735B1 (en) | 1994-04-13 |
| DE59005361D1 (en) | 1994-05-19 |
| ES2051446T3 (en) | 1994-06-16 |
| DE3942979A1 (en) | 1991-06-27 |
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