EP0326801B1 - Washing machine with a tub - Google Patents
Washing machine with a tub Download PDFInfo
- Publication number
- EP0326801B1 EP0326801B1 EP19890100082 EP89100082A EP0326801B1 EP 0326801 B1 EP0326801 B1 EP 0326801B1 EP 19890100082 EP19890100082 EP 19890100082 EP 89100082 A EP89100082 A EP 89100082A EP 0326801 B1 EP0326801 B1 EP 0326801B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- liquor
- tub
- container
- housing
- 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 - Lifetime
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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
- D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
-
- 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
- D06F39/085—Arrangements or adaptations of pumps
Definitions
- the invention relates to a washing machine with a tub, which essentially consists of two vertical container walls and a jacket connecting the walls and has a drain pump directly coupled to an opening near the bottom, which is used to remove the liquor from the tub, the impeller of which in one flat-cylindrical pump chamber runs, the lye is fed via a coaxial or near-axis inlet opposite a drive-side bearing plate and the housing is an integral part of the one container wall.
- the lye pump In the usual devices for removing lye from a tub, the lye pump is attached to some housing part, for example the floor, of the washing machine. Particularly in washing machines, the tub of which is part of a vibrating unit, the outlet opening of the tub must be connected to the suction port of the drain pump by means of a highly flexible hose (corrugated hose).
- the pressure port of the one leads an impeller drain pump tangentially away from a flat cylindrical impeller pump chamber, is regularly connected to an evacuation hose.
- drain pumps are self-priming, their pump chambers must each be filled with the medium to be pumped out. Such a drain pump chamber must therefore be at least partially lower than the outlet opening. From the known hose connection and from the position of the drain pump just mentioned, a relatively large "dead" solution volume results; this is the part of the lye that is not involved in the washing or rinsing process, but on the other hand absorbs dissolved or undissolved detergent and thermal energy.
- a generic washing machine is known from DE-U 87 03 645. There, however, the impeller is driven by a fold on the revolving laundry drum via a roller and only keeps a lye circulation in motion inside the tub. To remove lye from the tub, a controllable valve would have to be switched on in the pressure line of the tub pump, so that the tub is not constantly removed during the rotation of the drum. Because of the operation coupled with the rotation of the drum, especially at high spin speeds, the known pump drive is very susceptible to wear.
- the drain pump is, as usual, driven directly by an electric motor.
- this also serves as a drive for the laundry drum, so that without suitable measures - a controllable valve as described above, or a controllable Coupling between the laundry drum drive and the impeller - the same disadvantages occur as with the drain pump of DE-U-87 03 645.
- the pump housing of the washing machine according to EP-A-26 018 is attached to the bottom of the tub and cut so that the pump chamber cannot be closed on the suction side.
- this creates a liquid short circuit, which extremely deteriorates the efficiency of the pump, and on the other hand, the pump chamber located under the base of the tub forms a "dead" liquor volume and a trap for detergents that are removed from the washing process.
- the invention is based on the object of saving the detergent and heating energy, on the one hand maintaining the reduction in the "dead” lye volume according to DE-U-87 03 645, but on the other hand reducing the expenditure on liquid management and sealants and simplifying the manufacture of the drain pump.
- this object is achieved in that the opening of the tub lies opposite the drive-side end shield of the pump housing and is filled by an inserted cover plate with a central inlet, and in that the lower vertex of the container wall which is integrally connected to the end shield of the pump housing is lower than the lower vertex of the opposite container wall and the connecting line of the bottom to the drain pump drops.
- the waterways can be kept so short that the "dead” lye volume remains extremely small. Since when washing detergent into the tub, hardly any detergent can get into the inlet opening on the drain pump, which is now smaller than the outlet opening, and even with turbulent movement of the liquor within the tub, there is hardly any exchange of liquor between the tub and the pump chamber, so you do not have to use any unused detergent - and fear of heating energy.
- the cost of liquid guiding means has become extremely small, because the connecting hose from the outlet opening to the suction port of the known drain pump is eliminated. Since parts of the tub are used for the representation of the pump chamber, the manufacture of the tub pump is also simplified. Your housing only includes the drive-side bearing plate and the casing of the pump chamber with a molded pressure nozzle. The only additional effort is the separate cover plate for the pump chamber.
- the manufacture of the tub with molded pump housing made of plastic, such as polypropylene, is particularly simple because the cavities are so simple that no complicated drawing cores have to be provided in the injection mold.
- the plastic cover plate is a penny item and can be easily assembled by means of locking lugs, without having to be particularly sealed on its circumference; because the flow resistance of the central inlet is very small compared to possible marginal gaps.
- the invention is explained below on the basis of the exemplary embodiment shown in the drawing.
- the single figure shows the arrangement of a drain pump according to the invention on a vertical, flat wall.
- the tub 1 has a vertical wall 2, which is flat at least in the area of the tub pump 3.
- the tub 1 shown only in sections has a bottom 4 which is inclined towards the tub pump 3.
- This bottom 4 is part of the shell of a drum-shaped tub of a washing machine.
- the bottom 4 is arranged essentially horizontally, as shown in dash-dotted lines, but has a sump-like depression 5 in the area of the drain pump 3 in order to increase the amount of alkali which is emptied after the drain container 1 has been emptied on the floor to the level of the lower edge of the inlet opening 6 the drain pump 3 still stops, to keep it as small as possible.
- the drain pump has a flat cylindrical chamber housing 7 with a coaxially arranged bearing sleeve 8, into which a bearing bush 9 is pressed.
- the chamber housing 7 can as separate part to be flanged to the vertical wall 2 of the tub 1.
- a particular advantage of the invention results - as described above - only in that the chamber housing 7 is an integral part of the vertical wall 2 of the tub 1.
- the vertical wall 2 and the bottom 5 of the tub can be two separate parts or - as shown - also be a one-piece part, which is made for example from polypropylene by injection molding.
- the pump chamber 10 and the cavity of the bearing sleeve 8 result from inserting an extractable core of the injection molding tool.
- the pump chamber 10 is delimited towards the tub interior by a cover plate 11, which is held in the vertical wall 2 by means of locking devices 12. With its central inlet 6, the disk 11 serves to direct the flow of the liquor to be pumped out of the tub 1, which is fed centrally to the impeller 13 of the pump and is subjected to a centrifugal force by the impeller which drives it into the pressure port 14.
- a pumping hose can be connected to the pressure nozzle 14, which either directs the lye back into the tub or into a drain.
- a drive for the drain pump 3 is not shown in detail, nor is it part of the subject matter of the invention.
- Such a drain pump can be driven in any way, preferably by a flange-mounted permanent magnet electric motor.
Description
Die Erfindung geht aus von einer Waschmaschine mit einem Laugenbehälter, der im wesentlichen aus zwei senkrechten Behälterwänden und einem die Wände verbindenden Mantel besteht und eine an eine bodennahe Öffnung unmittelbar angekoppelte Laugenpumpe aufweist, die zum Entfernen der Lauge aus dem Laugenbehälter dient, deren Flügelrad in einer flachzylindrischen Pumpenkammer läuft, der die Lauge über einen koaxialen oder achsnahen Zulauf gegenüber einem antriebsseitigen Lagerschild zugeführt wird und deren Gehäuse einstükkiger Bestandteil der einen Behälterwand ist.The invention relates to a washing machine with a tub, which essentially consists of two vertical container walls and a jacket connecting the walls and has a drain pump directly coupled to an opening near the bottom, which is used to remove the liquor from the tub, the impeller of which in one flat-cylindrical pump chamber runs, the lye is fed via a coaxial or near-axis inlet opposite a drive-side bearing plate and the housing is an integral part of the one container wall.
Bei den gebräuchlichen Einrichtungen zum Entfernen von Lauge aus einem Laugenbehälter ist die Laugenpumpe an irgendeinem Gehäuseteil, z.B. dem Boden, der Waschmaschine befestigt. Insbesondere bei Waschmaschinen, deren Laugenbehälter Bestandteil eines schwingenden Aggregats ist, muß die Auslaßöffnung des Laugenbehälters mittels eines hochflexiblen Schlauches (Faltenschlauch) mit dem Ansaugstutzen der Laugenpumpe verbunden werden. Der Druckstutzen der bei einer einer Flügelrad-Laugenpumpe tangential von einer flachzylindrischen Flügelrad-Pumpenkammer wegführt, ist regelmäßig mit einem Abpumpschlauch verbunden.In the usual devices for removing lye from a tub, the lye pump is attached to some housing part, for example the floor, of the washing machine. Particularly in washing machines, the tub of which is part of a vibrating unit, the outlet opening of the tub must be connected to the suction port of the drain pump by means of a highly flexible hose (corrugated hose). The pressure port of the one leads an impeller drain pump tangentially away from a flat cylindrical impeller pump chamber, is regularly connected to an evacuation hose.
Damit solche Laugenpumpen selbstansaugend sind, müssen ihre Pumpenkammern jeweils mit dem abzupumpenden Medium gefüllt sein. Daher muß eine solche Laugenpumpenkammer mindestens teilweise tiefer als die Auslaßöffnung liegen. Aus der bekannten Schlauchverbindung und aus der eben erwähnten Lage der Laugenpumpe ergibt sich ein verhältnismäßig großes "totes" Laugenvolumen; das ist der Teil der Lauge, der am Wasch- oder Spülprozeß nicht beteiligt ist, andererseits aber gelöstes oder ungelöstes Waschmittel und Wärmeenergie in sich aufnimmt.So that such drain pumps are self-priming, their pump chambers must each be filled with the medium to be pumped out. Such a drain pump chamber must therefore be at least partially lower than the outlet opening. From the known hose connection and from the position of the drain pump just mentioned, a relatively large "dead" solution volume results; this is the part of the lye that is not involved in the washing or rinsing process, but on the other hand absorbs dissolved or undissolved detergent and thermal energy.
Eine gattungsgemäße Waschmaschine ist durch die DE-U 87 03 645 bekannt. Dort wird das Flügelrad allerdings über eine Laufrolle von einem Falz an der umlaufenden Wäschetrommel angetrieben und hält lediglich eine Laugenzirkulation innerhalb des Laugenbehälters in Gang. Zum Entfernen von Lauge aus dem Laugenbehälter müßte in die Druckleitung der Laugenpumpe ein steuerbares Ventil eingeschaltet sein, damit die Lauge während der Trommeldrehung nicht ständig entfernt wird. Wegen des mit der Trommeldrehung gekoppelten Betriebs, insbesondere bei hohen Schleuderdrehzahlen, ist der bekannte Pumpenantrieb sehr verschleißanfällig.A generic washing machine is known from DE-U 87 03 645. There, however, the impeller is driven by a fold on the revolving laundry drum via a roller and only keeps a lye circulation in motion inside the tub. To remove lye from the tub, a controllable valve would have to be switched on in the pressure line of the tub pump, so that the tub is not constantly removed during the rotation of the drum. Because of the operation coupled with the rotation of the drum, especially at high spin speeds, the known pump drive is very susceptible to wear.
In einer anderen bekannten Waschmaschine (EP-A 26 018) ist die Laugenpumpe wie üblich direkt durch einen Elektromotor angetrieben. Dieser dient jedoch zugleich als Antrieb für die Wäschetrommel, so daß ohne geeignete Maßnahmen - ein steuerbares Ventil wie oben beschrieben, oder eine steuerbare Kupplung zwischen dem Wäschetrommel-Antrieb und dem Flügelrad - dieselben Nachteile auftreten wie bei der Laugenpumpe des DE-U-87 03 645.In another known washing machine (EP-A 26 018), the drain pump is, as usual, driven directly by an electric motor. However, this also serves as a drive for the laundry drum, so that without suitable measures - a controllable valve as described above, or a controllable Coupling between the laundry drum drive and the impeller - the same disadvantages occur as with the drain pump of DE-U-87 03 645.
Außerdem ist das Pumpengehäuse der Waschmaschine gemäß EP-A-26 018 an den Boden des Laugenbehälters angesetzt und so geschnitten, daß sich die Pumpenkammer saugseitig nicht abschließen läßt. Einerseits entsteht dadurch ein Flüssigkeits-Kurzschluß, der den Wirkungsgrad der Pumpe extrem verschlechtert, und andererseits bildet der unter dem Laugenbehälter-Boden angesetzte Pumpenraum ein "totes" Laugenvolumen und eine Falle für Waschmittel, die dem Waschprozeß entzogen werden.In addition, the pump housing of the washing machine according to EP-A-26 018 is attached to the bottom of the tub and cut so that the pump chamber cannot be closed on the suction side. On the one hand, this creates a liquid short circuit, which extremely deteriorates the efficiency of the pump, and on the other hand, the pump chamber located under the base of the tub forms a "dead" liquor volume and a trap for detergents that are removed from the washing process.
Der Erfindung liegt die Aufgabe zugrunde, zur Einsparung von Waschmittel und Heizenergie einerseits die Verkleinerung des "toten" Laugenvolumens gemäß DE-U-87 03 645 beizubehalten, andererseits aber den Aufwand an Flüssigkeitsführungs- und Dichtungsmitteln zu verringern sowie die Herstellung der Laugenpumpe zu vereinfachen.The invention is based on the object of saving the detergent and heating energy, on the one hand maintaining the reduction in the "dead" lye volume according to DE-U-87 03 645, but on the other hand reducing the expenditure on liquid management and sealants and simplifying the manufacture of the drain pump.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Öffnung des Laugenbehälters dem antriebsseitigen Lagerschild des Pumpengehäuses gegenüber liegt und durch eine eingesetzte Abschlußscheibe mit mittigem Zulauf ausgefüllt ist und daß der untere Scheitel der mit dem Lagerschild des Pumpengehäuses einstückig verbundenen Behälterwand tiefer liegt als der untere Scheitel der gegenüberliegenden Behälterwand und die verbindende Linie des Bodens zur Laugenpumpe hin abfällt.According to the invention, this object is achieved in that the opening of the tub lies opposite the drive-side end shield of the pump housing and is filled by an inserted cover plate with a central inlet, and in that the lower vertex of the container wall which is integrally connected to the end shield of the pump housing is lower than the lower vertex of the opposite container wall and the connecting line of the bottom to the drain pump drops.
Hierdurch können die Wasserwege so kurz gehalten werden, daß das "tote" Laugenvolumen extrem klein bleibt. Da beim Einspülen von Waschmittel in den Laugenbehälter kaum Waschmittelanteile in die nunmehr gegenüber der Auslaßöffnung kleinere Zulauföffnung an der Laugenpumpe gelangen können und auch bei turbulenter Bewegung der Lauge innerhalb des Laugenbehälters kaum ein Laugenaustausch zwischen dem Laugenbehälter und der Pumpenkammer stattfindet, muß man hier keine ungenutzten Waschmittel- und Heizenergieanteile fürchten. Außerdem ist hiermit der Aufwand an Flüssigkeits-Führungsmitteln extrem klein geworden, weil der Verbindungsschlauch von der Auslaßöffnung zum Saugstutzen der bekannten Laugenpumpe wegfällt. Da Teile des Laugenbehälters für die Darstellung der Pumpenkammer mitbenutzt werden, ist auch die Herstellung der Laugenpumpe vereinfacht. Ihr Gehäuse umfaßt lediglich noch den antriebsseitigen Lagerschild und den Mantel der Pumpenkammer mit angegossenem Druckstutzen. Einziger zusätzlicher Aufwand besteht in der gesonderten Abschlußscheibe für die Pumpenkammer.As a result, the waterways can be kept so short that the "dead" lye volume remains extremely small. Since when washing detergent into the tub, hardly any detergent can get into the inlet opening on the drain pump, which is now smaller than the outlet opening, and even with turbulent movement of the liquor within the tub, there is hardly any exchange of liquor between the tub and the pump chamber, so you do not have to use any unused detergent - and fear of heating energy. In addition, the cost of liquid guiding means has become extremely small, because the connecting hose from the outlet opening to the suction port of the known drain pump is eliminated. Since parts of the tub are used for the representation of the pump chamber, the manufacture of the tub pump is also simplified. Your housing only includes the drive-side bearing plate and the casing of the pump chamber with a molded pressure nozzle. The only additional effort is the separate cover plate for the pump chamber.
Außerdem ist die Herstellung des Laugenbehälters mit angespritztem Pumpengehäuse aus Kunststoff, z.B. Polypropylen, besonders einfach, weil die Höhlungen so einfach gestaltet sind, daß keine komplizierten Ziehkerne im Spritzwerkzeug vorgesehen sein müssen.In addition, the manufacture of the tub with molded pump housing made of plastic, such as polypropylene, is particularly simple because the cavities are so simple that no complicated drawing cores have to be provided in the injection mold.
Die aus Kunststoff herstellbare Abschlußscheibe ist ein Pfennigartikel und läßt sich mittels Rastnasen leicht montieren, ohne daß sie an ihrem Umfang besonders gedichtet werden müßte; denn der Strömungswiderstand des mittigen Zulaufs ist im Vergleich zu möglichen Randspalten sehr klein.The plastic cover plate is a penny item and can be easily assembled by means of locking lugs, without having to be particularly sealed on its circumference; because the flow resistance of the central inlet is very small compared to possible marginal gaps.
Durch die zur Pumpe hin abfallende Bodenlinie des Laugenbehälter-Mantels ist der im Laugenbehälter nach dem Entleeren verbleibende Laugenrest sehr klein und nicht störend.Due to the bottom line of the suds container jacket falling towards the pump, the remaining suds in the suds container after emptying is very small and not disturbing.
Anhand des in der Zeichnung dargestellten Ausführungsbeispieles ist die Erfindung nachstehend erläutert. Die einzige Figur zeigt die Anordnung einer erfindungsgemäßen Laugenpumpe an einer senkrecht stehenden, ebenen Wand.The invention is explained below on the basis of the exemplary embodiment shown in the drawing. The single figure shows the arrangement of a drain pump according to the invention on a vertical, flat wall.
Der Laugenbehälter 1 hat eine senkrecht stehende Wand 2, die zumindest im Bereich der Laugenpumpe 3 eben gestaltet ist. Der nur ausschnittsweise dargestellte Laugenbehälter 1 hat unten einen Boden 4, der zur Laugenpumpe 3 hin geneigt ist. Dieser Boden 4 ist Bestandteil des Mantels eines trommelförmigen Laugenbehälters einer Waschmaschine. In einer anderen Alternative ist der Boden 4 gemäß strichpunktierter Darstellung im wesentlichen waagerecht angeordnet, hat aber im Bereich der Laugenpumpe 3 eine sumpfartige Vertiefung 5, um die Laugenmenge, die nach dem Entleeren des Laugenbehälters 1 am Boden bis zur Höhe des unteren Randes der Zulauföffnung 6 der Laugenpumpe 3 noch stehen bleibt, möglichst klein zu halten.The
Die Laugenpumpe hat ein flachzylindrisches Kammergehäuse 7 mit einer koaxial angeordneten Lagerhülse 8, in die eine Lagerbuchse 9 eingepreßt ist. Das Kammergehäuse 7 kann als gesondertes Teil an der senkrechten Wandung 2 des Laugenbehälters 1 angeflanscht sein. Ein besonderer Vorteil der Erfindung ergibt sich jedoch - wie oben beschrieben - erst dadurch, daß das Kammergehäuse 7 einstückiger Bestandteil der senkrechten Wandung 2 des Laugenbehälters 1 ist. Dabei können die senkrechte Wand 2 und der Boden 5 des Laugenbehälters zwei voneinander getrennte Teile oder - wie dargestellt - ebenfalls ein einstückiges Teil sein, das beispielsweise aus Polypropylen im Spritzgußverfahren hergestellt ist. Die Pumpenkammer 10 und der Hohlraum der Lagerhülse 8 ergeben sich dabei durch Einlegen eines ausziehbaren Kerns des Spritzguß-Werkzeugs.The drain pump has a flat
Zum Laugenbehälter-Innenraum hin ist die Pumpenkammer 10 durch eine Abschlußscheibe 11 abgegrenzt, die mittels Rasteinrichtungen 12 in der senkrechten Wand 2 gehalten wird. Die Scheibe 11 dient mit ihrem mittigen Zulauf 6 der Strömungslenkung der aus dem Laugenbehälter 1 abzupumpenden Lauge, die dem Flügelrad 13 der Pumpe zentral zugeführt und vom Flügelrad einer Fliehkraft ausgesetzt wird, die sie in den Druckstutzen 14 treibt. An den Druckstutzen 14 kann ein Abpumpschlauch angeschlossen sein, der die Lauge entweder in den Laugenbehälter zurück oder in einen Abfluß leitet.The
Ein Antrieb für die Laugenpumpe 3 ist nicht näher dargestellt, gehört auch nicht zum Gegenstand der Erfindung. Eine solche Laugenpumpe kann auf beliebige Weise, vorzugsweise durch einen angeflanschten Permanentmagnet-Elektromotor, angetrieben sein.A drive for the drain pump 3 is not shown in detail, nor is it part of the subject matter of the invention. Such a drain pump can be driven in any way, preferably by a flange-mounted permanent magnet electric motor.
Claims (1)
- Washing machine with a liquor container (1), which substantially consists of two vertical container walls and a shell (16) connecting the walls, and a liquor pump (3), which is directly coupled to an opening near the bottom, serves for the removal of the liquor from the liquor container (1) and the impeller of which runs in a flat cylindrical pump chamber (10), which feeds the liquor by way of a coaxial or nearly axial inlet (6) opposite a bearing plate (19) at the drive side and the housing (3) of which is an integral component of the one container wall (2), characterised thereby that the opening of the liquor container (1) lies opposite the bearing plate (19), at the drive side, of the pump housing (7) and is filled in by an inserted closure disc (11) with a central inlet (6) and that the lower crest of the container wall (2) integrally connected with the bearing plate (19) of the pump housing (7) lies deeper than the lower crest of the oppositely disposed container wall and the connecting line of the base (4) drops down towards the liquor pump (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3802889A DE3802889A1 (en) | 1988-02-01 | 1988-02-01 | WASHING OR DISHWASHER WITH A LYE RESERVOIR |
| DE3802889 | 1988-02-01 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92106857.3 Division-Into | 1992-04-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0326801A1 EP0326801A1 (en) | 1989-08-09 |
| EP0326801A3 EP0326801A3 (en) | 1989-10-18 |
| EP0326801B1 true EP0326801B1 (en) | 1992-11-19 |
Family
ID=6346379
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19920106857 Ceased EP0500144A1 (en) | 1988-02-01 | 1989-01-04 | Washing machine with a tub |
| EP19890100082 Expired - Lifetime EP0326801B1 (en) | 1988-02-01 | 1989-01-04 | Washing machine with a tub |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19920106857 Ceased EP0500144A1 (en) | 1988-02-01 | 1989-01-04 | Washing machine with a tub |
Country Status (4)
| Country | Link |
|---|---|
| EP (2) | EP0500144A1 (en) |
| DE (2) | DE3802889A1 (en) |
| ES (1) | ES2035955T3 (en) |
| HK (1) | HK158295A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1308702B1 (en) * | 1999-02-16 | 2002-01-10 | Iar Siltal Spa | WASHING MACHINE |
| WO2007053041A1 (en) * | 2005-11-04 | 2007-05-10 | Fisher & Paykel Appliances Limited | Integrated washing machine pump |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE526378A (en) * | ||||
| FR2085269A7 (en) * | 1970-04-03 | 1971-12-24 | Stierlen Werke Ag | |
| FR2425228A1 (en) * | 1978-05-09 | 1979-12-07 | Indesit | Energy saving dish washer drum - has well at bottom with centrifugal pump, suction hole and pipe, connected to conical projection on well bottom |
| EP0026018B1 (en) * | 1979-09-19 | 1984-05-30 | Constructions Electro-Mecaniques D'amiens | Washing and spin drying machine, the drum being driven by an immersed belt |
| FR2528690A3 (en) * | 1982-06-21 | 1983-12-23 | Indesit | Pump rotor and drive motor arrangement for washer - uses horizontal drain with centrifugal pump wheel mounted on vertical axis having electric motor directly above it |
| DE3443166A1 (en) * | 1984-11-27 | 1986-05-28 | Miele & Cie GmbH & Co, 4830 Gütersloh | Dishwasher having an emptying pump and a non-return valve |
| FR2605652B1 (en) * | 1986-10-28 | 1989-03-31 | Ciapem | WASHING MACHINE WITH RECYCLING AND DRAIN PUMPS |
| DE8703645U1 (en) * | 1987-03-11 | 1987-10-29 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De |
-
1988
- 1988-02-01 DE DE3802889A patent/DE3802889A1/en not_active Withdrawn
-
1989
- 1989-01-04 ES ES198989100082T patent/ES2035955T3/en not_active Expired - Lifetime
- 1989-01-04 EP EP19920106857 patent/EP0500144A1/en not_active Ceased
- 1989-01-04 EP EP19890100082 patent/EP0326801B1/en not_active Expired - Lifetime
- 1989-01-04 DE DE8989100082T patent/DE58902727D1/en not_active Expired - Lifetime
-
1995
- 1995-10-05 HK HK158295A patent/HK158295A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0326801A3 (en) | 1989-10-18 |
| HK158295A (en) | 1995-10-13 |
| ES2035955T3 (en) | 1993-05-01 |
| DE58902727D1 (en) | 1992-12-24 |
| EP0500144A1 (en) | 1992-08-26 |
| DE3802889A1 (en) | 1989-08-10 |
| EP0326801A1 (en) | 1989-08-09 |
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