EP1576291B1 - Water-bearing domestic appliance comprising a drainage pump and corresponding drainage pump - Google Patents

Water-bearing domestic appliance comprising a drainage pump and corresponding drainage pump Download PDF

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Publication number
EP1576291B1
EP1576291B1 EP03767672.3A EP03767672A EP1576291B1 EP 1576291 B1 EP1576291 B1 EP 1576291B1 EP 03767672 A EP03767672 A EP 03767672A EP 1576291 B1 EP1576291 B1 EP 1576291B1
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EP
European Patent Office
Prior art keywords
pump
drainage pump
water
domestic appliance
bearing domestic
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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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EP03767672.3A
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German (de)
French (fr)
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EP1576291A1 (en
Inventor
Roland Ertle
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority claimed from DE10318862A external-priority patent/DE10318862B4/en
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP1576291A1 publication Critical patent/EP1576291A1/en
Application granted granted Critical
Publication of EP1576291B1 publication Critical patent/EP1576291B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump

Definitions

  • the invention relates to a water-conducting household appliance with a drain pump, which has a pump impeller, by means of which the liquid is conveyed and a drain pump with a pump impeller.
  • a drain pump for pumping spent cleaning fluid and thus to avoid clogging caused by dirt particles, Grobanschmutz Heidelberg etc.
  • the drainage pump allows the pumping of some coarser dirt particles through a pump impeller, promoted in the liquid and air can be sucked.
  • the air is sucked to the pump impeller and remains in the drain pump.
  • this air is forced into the center of the pump impeller and prevents or prevents the inflow of liquid in the axial inflow direction.
  • Each drain pump has problems draining this intake air because the air in the impeller is trapped due to centrifugal forces. This all means that the delivery rate is not very high and that the fate of air bubbles leads to losses in the already low pumping power.
  • German Utility Model 94 06 463 U1 a venting device for a drain pump for dishwashers is known, which has a vent on the suction side to flow out of the trapped in the center of the drainage pump air. This ensures that malfunctions when restarting the drain pump are avoided.
  • a circulation pump and self-priming wastewater pump with a common drive motor is known, which are arranged in a dishwasher above the lowest point of the water sump.
  • a connection path for the air pressure equalization is provided between the interior of the circulating pump and the sewage pump.
  • the invention is based on the object to provide a water-conducting household appliance of the type described, in which the promotion of air and liquid and the pumping capacity of the drain pump are improved as well as to provide a corresponding drain pump available.
  • the drain pump Starting from a water-conducting household appliance with a drain pump having a pump impeller and a drain pump with pump impeller, the drain pump according to the subject invention has a separate chamber, which arranged relative to the direction of the conveyed liquid behind the impeller and radially on its outer diameter and in the vicinity of its inner diameter is provided in each case with holes.
  • the separate chamber advantageously creates a fluid flow from the outer diameter to the inner diameter and then into the center of the pump impeller, whereby the air is better swirled with the liquid and the resulting mixture is pumped out more effectively.
  • the pumping capacity and the suction behavior of the drainage pump improve, in particular even without external expenditure and without carryover of the pumped medium caused by ventilation openings or ventilation channels in the pump housing.
  • the separate chamber is arranged as close as possible to the pump impeller.
  • the liquid flow in the flow circuit of the drain pump from the outer diameter to the inner diameter of the separate chamber and from there to the center of the pump impeller for the mixing of liquid with air can be further improved.
  • a plurality of holes for outer diameter and inner diameter are provided.
  • the holes for outer diameter and inner diameter are each uniformly distributed to the separate chamber. Both measures positively influence the liquid flow in relation to the drainage circuit of the drainage pump.
  • a water-conducting household appliance with a drain pump which has a pump impeller, with the aid of which liquid is conveyed created, at the promotion of air and liquid and the pumping capacity of the drain pump are improved, and further provided a corresponding drain pump with a pump impeller available.
  • FIG. 1 shows an emptying pump 1 according to the invention of a non-illustrated water-conducting household appliance according to the invention, typically a dishwasher or a washing machine having a pump housing 2 with a pump impeller 3.
  • An inlet nozzle 4 through the liquid - for example, water - promoted in the impeller 3 or air can be sucked, extending in the direction of the axis of the pump impeller 3 and is formed on the input side of the pump housing 2.
  • a motor housing 5 with the drive motor for the pump impeller 3, which can be set in rotation with, for example, straight vanes, is also located in the direction of the axis of the pump impeller 3 and is integrally formed on the other side to the pump housing 2.
  • the drain pump 1 has an outlet nozzle 10, which is arranged radially with respect to the axis of the pump impeller 3.
  • the water-bearing domestic appliance has an emptying pump 1 with a separate chamber 6 which, relative to the direction of the conveyed liquid - ie the axis of the pump impeller 3 - is arranged behind the pump impeller 3 and radially on its outer diameter 11 and in the vicinity their inner diameter 12 are each provided with bores 7 'and 7 ".
  • the separate chamber 6 advantageously creates a liquid flow - recognizable by the arrows in FIG. 1 - From the outer diameter 11 to the inner diameter 12 and then into the center 9 of the pump impeller 3, whereby the air swirled better with the liquid and the resulting mixture 8 is pumped out more effectively.
  • the pumping power and the intake behavior of the drainage pump 1 improve, in particular without external expenditures and without carryover of the pumped medium caused by ventilation openings or venting channels in the pump housing 2.
  • the separate chamber 6 is arranged as close to the pump impeller 3, whereby the liquid flow in the flow circuit - see arrows - the drain pump 1 from the outer diameter 11 to the inner diameter 12 of the separate chamber 6 and from there to the center 9 of the pump impeller 3 for mixing of liquid with air even further.
  • FIG. 2 shows for clarity a section of belonging to the drain pump separate chamber 6 with an exemplary arrangement of the holes.
  • a bore 7 ' is located on the outer diameter 11 of the chamber 6, while another bore 7 "is disposed in the vicinity of the inner diameter 12 of the chamber 6.
  • the chamber 6 has radially both on its outer diameter 11 and on its inner diameter 11 respectively four evenly spaced holes 7 'and 7 "on.
  • the arrows show the course of the fluid flow from the outer diameter 11 with bore 7 ', at which there is a higher pressure, to the inner diameter 12 with bore 7 ", at which a lower pressure prevails, and from there to the center of the pump impeller proven, if the holes are dimensioned with a small cross-section, all holes have, for example, each 3.5 mm in diameter.
  • a water-bearing domestic appliance with a drain pump 1, which has a pump impeller 3, is promoted with the liquid created in which the promotion of air and liquid and the pumping capacity of the drain pump 1 are improved and also a corresponding drain pump 1 with a Pump impeller 3 provided.

Description

Die Erfindung betrifft ein wasserführendes Haushaltgerät mit einer Entleerungspumpe, die ein Pumpenlaufrad aufweist, mit Hilfe dessen Flüssigkeit gefördert wird sowie eine Entleerungspumpe mit einem Pumpenlaufrad.The invention relates to a water-conducting household appliance with a drain pump, which has a pump impeller, by means of which the liquid is conveyed and a drain pump with a pump impeller.

Bei wasserführenden Haushaltgeräten wie Geschirrspülmaschinen oder Waschmaschinen wird eine Entleerungspumpe zum Abpumpen von verbrauchter Reinigungsflüssigkeit und damit auch zur Vermeidung von Verstopfungen hervorgerufen durch Schmutzpartikel, Grobanschmutzungen etc. eingesetzt. Die Entleerungspumpe ermöglicht das Abpumpen von zum Teil auch gröberen Schmutzteilen durch ein Pumpenlaufrad, in das Flüssigkeit gefördert und Luft angesaugt werden kann. Am Ende eines Abpumpvorgangs wird die Luft zum Pumpenlaufrad angesaugt und verbleibt in der Entleerungspumpe. Besonders beim Wiederanlaufen der Entleerungspumpe wird diese Luft in die Mitte des Pumpenlaufrades gedrängt und be- oder verhindert den Zulauf von Flüssigkeit in axialer Einströmrichtung. Jede Entleerungspumpe hat Probleme, diese angesaugte Luft abzupumpen, da die Luft in Pumpenlaufrad auf Grund von Fliehkräften gefangen bleibt. Dies alles bedeutet, dass die Förderleistung nicht sehr groß ist und dass der Verbleib von Luftblasen zu Verlusten bei der ohnehin schon geringen Pumpleistung führt.In water-bearing household appliances such as dishwashers or washing machines, a drain pump for pumping spent cleaning fluid and thus to avoid clogging caused by dirt particles, Grobanschmutzungen etc. is used. The drainage pump allows the pumping of some coarser dirt particles through a pump impeller, promoted in the liquid and air can be sucked. At the end of a pump-down process, the air is sucked to the pump impeller and remains in the drain pump. Especially when the drain pump is restarted, this air is forced into the center of the pump impeller and prevents or prevents the inflow of liquid in the axial inflow direction. Each drain pump has problems draining this intake air because the air in the impeller is trapped due to centrifugal forces. This all means that the delivery rate is not very high and that the fate of air bubbles leads to losses in the already low pumping power.

Aus dem Deutschen Gebrauchsmuster 94 06 463 U1 ist eine Entlüftungsvorrichtung für eine Entleerungspumpe bei Geschirrspülmaschinen bekannt, die auf der Ansaugseite eine Entlüftungsöffnung zum Ausströmen der im Zentrum der Entleerungspumpe eingeschlossenen Luft aufweist. Damit ist sichergestellt, dass Funktionsstörungen beim Wiederanlaufen der Entleerungspumpe vermieden werden.German Utility Model 94 06 463 U1 a venting device for a drain pump for dishwashers is known, which has a vent on the suction side to flow out of the trapped in the center of the drainage pump air. This ensures that malfunctions when restarting the drain pump are avoided.

Aus der FR 1 594 848 A ist eine Umwälzpumpe und selbstansaugende Abwasserpumpe mit einem gemeinsamen Antriebsmotor bekannt, die in einer geschirrspülmaschine oberhalb des tiefsten Punktes des Wassersumpfes angeordnet sind. Dabei ist zwischen dem Innenraum der Umwälzpumpe und dem der Abwasserpumpe ein Verbindungsweg für den Luftdruckausgleich vorgesehen.From the FR 1 594 848 A a circulation pump and self-priming wastewater pump with a common drive motor is known, which are arranged in a dishwasher above the lowest point of the water sump. In this case, a connection path for the air pressure equalization is provided between the interior of the circulating pump and the sewage pump.

Der Erfindung liegt die Aufgabe zu Grunde, ein wasserführendes Haushaltgerät der beschriebenen Art zu schaffen, bei der die Förderung von Luft und Flüssigkeit und die Pumpleistung der Entleerungspumpe verbessert werden sowie ferner eine entsprechende Entleerungspumpe zur Verfügung zu stellen.The invention is based on the object to provide a water-conducting household appliance of the type described, in which the promotion of air and liquid and the pumping capacity of the drain pump are improved as well as to provide a corresponding drain pump available.

Diese Aufgabe wird für das wasserführende Haushaltgerät durch die Merkmale des Patentanspruchs 1 und durch den weiteren unabhängigen Anspruch für die Entleerungspumpe erfindungsgemäß gelöst. Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved for the water-bearing domestic appliance by the features of claim 1 and by the further independent claim for the drain pump according to the invention. Further developments of the invention are specified in the subclaims.

Ausgehend von einem wasserführenden Haushaltgerät mit einer Entleerungspumpe, die ein Pumpenlaufrad aufweist und von einer Entleerungspumpe mit Pumpenlaufrad, weist die Entleerungspumpe gemäß dem Gegenstand der Erfindung eine gesonderte Kammer auf, die bezogen auf die Richtung der geförderten Flüssigkeit hinter dem Pumpenlaufrad angeordnet und radial an ihrem Außendurchmesser sowie in der Nähe ihres Innendurchmessers jeweils mit Bohrungen versehen ist. Durch die gesonderte Kammer entsteht vorteilhaft eine Flüssigkeitsströmung vom Außendurchmesser zum Innendurchmesser und anschließend in das Zentrum des Pumpenlaufrades, wodurch die Luft besser mit der Flüssigkeit verwirbelt und das daraus entstehende Gemisch effektiver abgepumpt wird. Die Pumpleistung und das Ansaugverhalten der Entleerungspumpe verbessern sich, insbesondere auch ohne externe Aufwendungen und ohne Verschleppung des Fördermediums verursacht durch Entlüftungsöffnungen oder Entlüftungskanäle im Pumpengehäuse.Starting from a water-conducting household appliance with a drain pump having a pump impeller and a drain pump with pump impeller, the drain pump according to the subject invention has a separate chamber, which arranged relative to the direction of the conveyed liquid behind the impeller and radially on its outer diameter and in the vicinity of its inner diameter is provided in each case with holes. The separate chamber advantageously creates a fluid flow from the outer diameter to the inner diameter and then into the center of the pump impeller, whereby the air is better swirled with the liquid and the resulting mixture is pumped out more effectively. The pumping capacity and the suction behavior of the drainage pump improve, in particular even without external expenditure and without carryover of the pumped medium caused by ventilation openings or ventilation channels in the pump housing.

Gemäß einer günstigen Weiterbildung der Erfindung ist die gesonderte Kammer möglichst nahe dem Pumpenlaufrad angeordnet. Dadurch lässt sich die Flüssigkeitsströmung im Strömungskreislauf der Entleerungspumpe vom Außendurchmesser zum Innendurchmesser der gesonderten Kammer und von dort zum Zentrum des Pumpenlaufrades für die Vermischung von Flüssigkeit mit Luft noch weiter verbessern.According to a favorable development of the invention, the separate chamber is arranged as close as possible to the pump impeller. As a result, the liquid flow in the flow circuit of the drain pump from the outer diameter to the inner diameter of the separate chamber and from there to the center of the pump impeller for the mixing of liquid with air can be further improved.

Gemäß einer weiteren günstigen Ausgestaltung der Erfindung sind mehrere Bohrungen für Außendurchmesser und Innendurchmesser vorgesehen. Vorzugsweise sind die Bohrungen für Außendurchmesser und Innendurchmesser jeweils gleichmäßig verteilt an der gesonderten Kammer angebracht. Beide Maßnahmen beeinflussen die Flüssigkeitsströmung in Bezug auf den Strömungskreislauf der Entleerungspumpe positiv.According to a further advantageous embodiment of the invention, a plurality of holes for outer diameter and inner diameter are provided. Preferably, the holes for outer diameter and inner diameter are each uniformly distributed to the separate chamber. Both measures positively influence the liquid flow in relation to the drainage circuit of the drainage pump.

Von besonderem Wert hat sich eine weitere Ausgestaltung der Erfindung erwiesen, wonach die Bohrungen einen kleinen Querschnitt aufweisen.Of particular value, a further embodiment of the invention has been found, according to which the holes have a small cross-section.

Die vorbeschriebenen Merkmale werden mit Vorteil auch bei der erfindungsgemäßen Entleerungspumpe mit einem Laufrad und insbesondere in Geschirrspülmaschinen und Waschmaschinen angewandt.The features described above are advantageously also used in the drainage pump according to the invention with an impeller and in particular in dishwashers and washing machines.

Mit der Erfindung ist ein wasserführendes Haushaltgerät mit einer Entleerungspumpe, die ein Pumpenlaufrad aufweist, mit Hilfe dessen Flüssigkeit gefördert wird, geschaffen, bei der die Förderung von Luft und Flüssigkeit und die Pumpleistung der Entleerungspumpe verbessert werden sowie ferner eine entsprechende Entleerungspumpe mit einem Pumpenlaufrad zur Verfügung gestellt.With the invention, a water-conducting household appliance with a drain pump, which has a pump impeller, with the aid of which liquid is conveyed created, at the promotion of air and liquid and the pumping capacity of the drain pump are improved, and further provided a corresponding drain pump with a pump impeller available.

Der Gegenstand der Erfindung wird anhand eines in einer Figur dargestellten Ausführungsbeispiels näher erläutert. Im einzelnen zeigen

Figur 1
eine Entleerungspumpe eines wasserführenden Haushaltgeräts gemäß der Erfindung, und
Figur 2
einen Ausschnitt der zur Entleerungspumpe gehörigen Kammer mit einer beispielhaften Anordnung der Bohrungen.
The object of the invention will be explained in more detail with reference to an embodiment shown in a figure. Show in detail
FIG. 1
a drain pump of a water-conducting household appliance according to the invention, and
FIG. 2
a section of the emptying pump associated chamber with an exemplary arrangement of the holes.

Figur 1 zeigt eine erfindungsgemäße Entleerungspumpe 1 eines nicht näher dargestellten, erfindungsgemäßen wasserführenden Haushaltgeräts, typischerweise einer Geschirrspülmaschine oder einer Waschmaschine, die ein Pumpengehäuse 2 mit einem Pumpenlaufrad 3 aufweist. Ein Eingangsstutzen 4, über den Flüssigkeit - beispielsweise Wasser - in das Pumpenlaufrad 3 gefördert oder Luft angesaugt werden kann, verläuft in Richtung der Achse des Pumpenlaufrades 3 und ist auf der Eingangsseite des Pumpengehäuses 2 angeformt. Ein Motorgehäuse 5 mit dem Antriebsmotor für das Pumpenlaufrad 3, das mit beispielsweise geraden Radflügeln in Rotation versetzt werden kann, befindet sich ebenfalls in Richtung der Achse des Pumpenlaufrades 3 und ist auf der anderen Seite an das Pumpengehäuse 2 angeformt. Darüber hinaus verfügt die Entleerungspumpe 1 über einen Ausgangsstutzen 10, der in Bezug auf die Achse des Pumpenlaufrades 3 radial angeordnet ist. FIG. 1 shows an emptying pump 1 according to the invention of a non-illustrated water-conducting household appliance according to the invention, typically a dishwasher or a washing machine having a pump housing 2 with a pump impeller 3. An inlet nozzle 4, through the liquid - for example, water - promoted in the impeller 3 or air can be sucked, extending in the direction of the axis of the pump impeller 3 and is formed on the input side of the pump housing 2. A motor housing 5 with the drive motor for the pump impeller 3, which can be set in rotation with, for example, straight vanes, is also located in the direction of the axis of the pump impeller 3 and is integrally formed on the other side to the pump housing 2. In addition, the drain pump 1 has an outlet nozzle 10, which is arranged radially with respect to the axis of the pump impeller 3.

Gemäß dem Gegenstand der Erfindung weist das wasserführende Haushaltgerät eine Entleerungspumpe 1 mit einer gesonderten Kammer 6 auf, die bezogen auf die Richtung der geförderten Flüssigkeit - d.h. der Achse des Pumpenlaufrades 3 - hinter dem Pumpenlaufrad 3 angeordnet und radial an ihrem Außendurchmesser 11 sowie in der Nähe ihres Innendurchmessers 12 jeweils mit Bohrungen 7' und 7" versehen. Durch die gesonderte Kammer 6 entsteht vorteilhaft eine Flüssigkeitsströmung - erkennbar an den Pfeilen in Figur 1 - vom Außendurchmesser 11 zum Innendurchmesser 12 und anschließend in das Zentrum 9 des Pumpenlaufrades 3, wodurch die Luft besser mit der Flüssigkeit verwirbelt und das daraus entstehende Gemisch 8 effektiver abgepumpt wird. Die Pumpleistung und das Ansaugverhalten der Entleerungspumpe 1 verbessern sich, insbesondere auch ohne externe Aufwendungen und ohne Verschleppung des Fördermediums verursacht durch Entlüftungsöffnungen oder Entlüftungskanäle im Pumpengehäuse 2.According to the subject-matter of the invention, the water-bearing domestic appliance has an emptying pump 1 with a separate chamber 6 which, relative to the direction of the conveyed liquid - ie the axis of the pump impeller 3 - is arranged behind the pump impeller 3 and radially on its outer diameter 11 and in the vicinity their inner diameter 12 are each provided with bores 7 'and 7 "., Through the separate chamber 6 advantageously creates a liquid flow - recognizable by the arrows in FIG. 1 - From the outer diameter 11 to the inner diameter 12 and then into the center 9 of the pump impeller 3, whereby the air swirled better with the liquid and the resulting mixture 8 is pumped out more effectively. The pumping power and the intake behavior of the drainage pump 1 improve, in particular without external expenditures and without carryover of the pumped medium caused by ventilation openings or venting channels in the pump housing 2.

In günstiger Weise ist die gesonderte Kammer 6 möglichst nahe dem Pumpenlaufrad 3 angeordnet, wodurch sich die Flüssigkeitsströmung im Strömungskreislauf - siehe Pfeile - der Entleerungspumpe 1 vom Außendurchmesser 11 zum Innendurchmesser 12 der gesonderten Kammer 6 und von dort zum Zentrum 9 des Pumpenlaufrades 3 für die Vermischung von Flüssigkeit mit Luft noch weiter verbessern. Es sind für Außendurchmesser 11 und Innendurchmesser 12 jeweils mehrere Bohrungen 7', 7" vorgesehen und vorzugsweise gleichmäßig verteilt an der gesonderten Kammer 6 angebracht. Beide Maßnahmen beeinflussen die Flüssigkeitsströmung - siehe Pfeile - in Bezug auf den Strömungskreislauf der Entleerungspumpe 1 ebenfalls positiv.Conveniently, the separate chamber 6 is arranged as close to the pump impeller 3, whereby the liquid flow in the flow circuit - see arrows - the drain pump 1 from the outer diameter 11 to the inner diameter 12 of the separate chamber 6 and from there to the center 9 of the pump impeller 3 for mixing of liquid with air even further. In each case a plurality of bores 7 ', 7 "are provided for outer diameter 11 and inner diameter 12, and are preferably distributed uniformly on the separate chamber 6. Both measures also influence the liquid flow - see arrows - positively in relation to the flow circuit of the drain pump 1.

Figur 2 zeigt zur Verdeutlichung einen Ausschnitt der zur Entleerungspumpe gehörigen gesonderten Kammer 6 mit einer beispielhaften Anordnung der Bohrungen. So befindet sich eine Bohrung 7' am Außendurchmesser 11 der Kammer 6, während eine andere Bohrung 7" in der Nähe des Innendurchmessers 12 der Kammer 6 angeordnet ist. Insgesamt weist die Kammer 6 radial sowohl an ihrem Außendurchmesser 11 als auch an ihrem Innendurchmesser 11 jeweils vier gleichmäßig verteilte Bohrungen 7' und 7" auf. Die Pfeile zeigen den Verlauf der Flüssigkeitsströmung vom Außendurchmesser 11 mit Bohrung 7', an dem ein höherer Druck vorliegt, zum Innendurchmesser 12 mit Bohrung 7", an dem ein niedrigerer Druck herrscht, und von dort zum Zentrum des Pumpenlaufrades. Von besonderem Wert hat sich erwiesen, wenn die Bohrungen mit einem kleinen Querschnitt bemessen sind, so weisen alle Bohrungen beispielsweise jeweils 3.5 mm Durchmesser auf. FIG. 2 shows for clarity a section of belonging to the drain pump separate chamber 6 with an exemplary arrangement of the holes. Thus, a bore 7 'is located on the outer diameter 11 of the chamber 6, while another bore 7 "is disposed in the vicinity of the inner diameter 12 of the chamber 6. Overall, the chamber 6 has radially both on its outer diameter 11 and on its inner diameter 11 respectively four evenly spaced holes 7 'and 7 "on. The arrows show the course of the fluid flow from the outer diameter 11 with bore 7 ', at which there is a higher pressure, to the inner diameter 12 with bore 7 ", at which a lower pressure prevails, and from there to the center of the pump impeller proven, if the holes are dimensioned with a small cross-section, all holes have, for example, each 3.5 mm in diameter.

Mit der Erfindung ist ein wasserführendes Haushaltgerät mit einer Entleerungspumpe 1, die ein Pumpenlaufrad 3 aufweist, mit dem Flüssigkeit gefördert wird, geschaffen, bei der die Förderung von Luft und Flüssigkeit und die Pumpleistung der Entleerungspumpe 1 verbessert werden sowie ferner eine entsprechende Entleerungspumpe 1 mit einem Pumpenlaufrad 3 zur Verfügung gestellt.With the invention, a water-bearing domestic appliance with a drain pump 1, which has a pump impeller 3, is promoted with the liquid created in which the promotion of air and liquid and the pumping capacity of the drain pump 1 are improved and also a corresponding drain pump 1 with a Pump impeller 3 provided.

Claims (14)

  1. Water-bearing domestic appliance with a drainage pump according to claim 8.
  2. Water-bearing domestic appliance according to claim 1, characterised in that the separate chamber (6) is disposed as close to the pump impeller (3) as possible.
  3. Water-bearing domestic appliance according to one of the preceding claims, characterised in that there is provision for a plurality of bores (7', 7") for the outer diameter (11) and inner diameter (12).
  4. Water-bearing domestic appliance according to one of the preceding claims, characterised in that the bores (7', 7") for the outer diameter (11) and inner diameter (12) are each applied to the separate chamber (6) in an equally distributed manner.
  5. Water-bearing domestic appliance according to one of the preceding claims, characterised in that the bores (7', 7") have a small cross-section.
  6. Water-bearing domestic appliance according to one of the preceding claims, for use in a dishwasher.
  7. Water-bearing domestic appliance according to one of claims 1 to 5, for use in a washing machine.
  8. Drainage pump with a pump impeller, with the aid of which liquid is conveyed, wherein the drainage pump (1) has a separate chamber (6), which is disposed behind the pump impeller (3) with respect to the direction of the conveyed liquid, characterised in that the chamber (6) is provided with bores (7', 7") radially on its outer diameter (11) and near its inner diameter (12) in each case.
  9. Drainage pump according to claim 8, characterised in that the separate chamber (6) is disposed as close to the pump impeller (3) as possible.
  10. Drainage pump according to claim 8 or 9, characterised in that there is provision for a plurality of bores (7', 7") for the outer diameter (11) and inner diameter (12).
  11. Drainage pump according to one of claims 8 to 10, characterised in that the bores (7', 7") for the outer diameter (11) and inner diameter (12) are each applied to the separate chamber (6) in an equally distributed manner.
  12. Drainage pump according to one of claims 8 to 11, characterised in that the bores (7', 7") have a small cross-section.
  13. Drainage pump according to one of claims 8 to 12, characterised in that the drainage pump (1) is used in a dishwasher.
  14. Drainage pump according to one of claims 8 to 12, characterised in that the drainage pump (1) is used in a washing machine.
EP03767672.3A 2002-12-18 2003-11-26 Water-bearing domestic appliance comprising a drainage pump and corresponding drainage pump Expired - Lifetime EP1576291B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10259347 2002-12-18
DE10259347 2002-12-18
DE10318862A DE10318862B4 (en) 2002-12-18 2003-04-25 Water carrying domestic appliance such as dishwasher or washing machine has separate chamber for drain pump located behind impeller and with holes radially on outside diameter and in vicinity of inside diameter
DE10318862 2003-04-25
PCT/EP2003/013317 WO2004055373A1 (en) 2002-12-18 2003-11-26 Water-bearing domestic appliance comprising a drainage pump and corresponding drainage pump

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Publication Number Publication Date
EP1576291A1 EP1576291A1 (en) 2005-09-21
EP1576291B1 true EP1576291B1 (en) 2016-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03767672.3A Expired - Lifetime EP1576291B1 (en) 2002-12-18 2003-11-26 Water-bearing domestic appliance comprising a drainage pump and corresponding drainage pump

Country Status (4)

Country Link
US (1) US7597110B2 (en)
EP (1) EP1576291B1 (en)
AU (1) AU2003292128A1 (en)
WO (1) WO2004055373A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080078567A1 (en) * 2006-09-08 2008-04-03 Miller Donald J Antenna cable
US9840803B2 (en) * 2015-10-20 2017-12-12 Haier Us Appliance Solutions, Inc. Pump assembly for appliance

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306951A (en) * 1939-07-01 1942-12-29 Irving C Jennings Pump
US2680409A (en) * 1950-04-19 1954-06-08 Gen Electric Centrifugal pump
FR1130511A (en) * 1955-08-17 1957-02-06 Lamort E & M Improvements to centrifugal pumps
US3018650A (en) * 1960-06-15 1962-01-30 Gen Motors Corp Washing machine with drain pump having means to reduce the power requirements of the pump when operating at high speed
DE1653682A1 (en) 1967-12-15 1971-06-24 Bosch Hausgeraete Gmbh Circulation pump and self-priming sewage pump
US3707334A (en) * 1971-01-12 1972-12-26 Whirlpool Co Water pump with air lock breaking means
US3702680A (en) * 1971-11-08 1972-11-14 Fedders Corp Gentle wash mechanism for a dishwasher
CA1064193A (en) * 1974-02-11 1979-10-09 Dwain M. White Process for capping polyphenylene oxide
DE3412774A1 (en) * 1984-04-05 1985-10-17 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Centrifugal-type circulation pump
EP0229519B2 (en) * 1985-12-24 1996-11-13 Holset Engineering Company Limited Improvements in and relating to compressors
US5257901A (en) * 1990-12-28 1993-11-02 Whirlpool Corporation Quick-priming centrifugal pump
DE9406463U1 (en) 1994-04-19 1994-06-16 Bosch Siemens Hausgeraete Venting device for non-self-priming drain pumps in dishwashers
JP3637154B2 (en) * 1996-07-15 2005-04-13 松下電器産業株式会社 Pump equipment for washing machines
JP2000014964A (en) * 1998-06-30 2000-01-18 Sanyo Electric Co Ltd Fully automated washing machine
JP2000051135A (en) * 1998-08-06 2000-02-22 Toto Ltd Filter of dishwasher and dishwasher
JP2001073890A (en) * 1999-08-31 2001-03-21 Tokyo Roki Co Ltd Precleaner

Also Published As

Publication number Publication date
WO2004055373A1 (en) 2004-07-01
US20060147327A1 (en) 2006-07-06
US7597110B2 (en) 2009-10-06
AU2003292128A1 (en) 2004-07-09
EP1576291A1 (en) 2005-09-21

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