EP1576291A1 - 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

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Publication number
EP1576291A1
EP1576291A1 EP03767672A EP03767672A EP1576291A1 EP 1576291 A1 EP1576291 A1 EP 1576291A1 EP 03767672 A EP03767672 A EP 03767672A EP 03767672 A EP03767672 A EP 03767672A EP 1576291 A1 EP1576291 A1 EP 1576291A1
Authority
EP
European Patent Office
Prior art keywords
pump
water
liquid
pump impeller
separate chamber
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.)
Granted
Application number
EP03767672A
Other languages
German (de)
French (fr)
Other versions
EP1576291B1 (en
Inventor
Roland Ertle
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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
Priority claimed from DE10318862A external-priority patent/DE10318862B4/en
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1576291A1 publication Critical patent/EP1576291A1/en
Application granted granted Critical
Publication of EP1576291B1 publication Critical patent/EP1576291B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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-carrying household appliance with a drain pump, which has a pump impeller, with the aid of which liquid is conveyed, and to a drain pump with a pump impeller.
  • a drain pump In the case of water-bearing household appliances such as dishwashers or washing machines, a drain pump is used to pump out dirty cleaning liquid. At the end of a draining process, air gets into the pump housing. This sucked-in air concentrates due to the pressure conditions in the center of the rotating pump impeller and leads to a tearing or reduced flow. Trailing amounts of liquid are therefore no longer pumped out or delayed by the drain pump. Each drain pump shows these problems, which lead to malfunctions or other complex or disadvantageous measures.
  • a ventilation device for a drain pump in dishwashers is known from German utility model 94 06 463 U1, which has a ventilation opening on the suction side for the outflow of the air enclosed in the center of the drain pump. This ensures that malfunctions when restarting the drain pump are avoided.
  • the invention is based on the object of providing a water-conducting domestic appliance of the type described, in which the conveyance of air and liquid and the pumping capacity of the drainage pump are improved, and also to provide a corresponding drainage pump.
  • the drain pump according to the subject of the invention has a separate chamber, which is arranged behind the pump impeller in relation to the direction of the pumped liquid and radially on its outer diameter as well as holes in the vicinity of their inner diameter.
  • the separate chamber advantageously creates a liquid flow from the outside diameter to the inside diameter and then into the center of the pump impeller, as a result of which the air is more swirled with the liquid and the resulting mixture is pumped out more effectively.
  • the pumping capacity and the suction behavior of the drain pump improve, in particular also without external expenditure and without carry-over 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 drainage pump can be further improved from the outside diameter to the inside diameter of the separate chamber and from there to the center of the pump impeller for the mixing of liquid with air.
  • bores are provided for the outside diameter and inside diameter.
  • the bores for the outer diameter and inner diameter are preferably each distributed uniformly on the separate chamber. Both measures have a positive influence on the liquid flow in relation to the flow circuit of the drain pump.
  • a further embodiment of the invention has proven to be of particular value, according to which the bores have a small cross section.
  • a water-carrying household appliance with a drain pump which has a pump impeller with the aid of which liquid is conveyed, is created at which improve the conveyance of air and liquid and the pumping capacity of the drain pump and also provide a corresponding drain pump with a pump impeller.
  • Figure 1 is a drain pump of a water-bearing household appliance according to the invention.
  • Figure 2 shows a section of the chamber belonging to the drain pump with an exemplary arrangement of the holes.
  • FIG. 1 shows an emptying pump 1 according to the invention of a water-carrying household appliance according to the invention, not shown in more detail, typically a dishwasher or a washing machine, which has a pump housing 2 with a pump impeller 3.
  • a motor housing 5 with the drive motor for the pump impeller 3, which can be set in rotation with, for example, straight wheel blades, is also located in the direction of the axis of the pump impeller 3 and is molded onto the pump housing 2 on the other side.
  • the drain pump 1 has an outlet port 10, which is arranged radially with respect to the axis of the pump impeller 3.
  • the water-carrying household appliance has a drain pump 1 with a separate chamber 6, which is arranged behind the pump impeller 3 in relation to the direction of the liquid conveyed - ie the axis of the pump impeller 3 - and radially on its outside diameter 11 and in the vicinity of their inner diameter 12 each with bores T 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, as a result of which the air is better mixed with the liquid swirls and the resulting mixture 8 is pumped out more effectively.
  • the pump performance and the suction behavior of the drain pump 1 improve, in particular also without external expenditure and without carryover of the conveying medium caused by ventilation openings or ventilation channels in the pump housing 2.
  • the separate chamber 6 is advantageously arranged as close as possible to the pump impeller 3, as a result of which the liquid flow in the flow circuit - see arrows - of 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 improve even further.
  • a plurality of bores 7 ′, 7 ′′ are provided for the outer diameter 11 and inner diameter 12 and are preferably distributed evenly on the separate chamber 6. Both measures have a positive influence on the flow of liquid - see arrows - with regard to the flow circuit of the drainage pump 1.
  • FIG. 2 shows a section of the separate chamber 6 belonging to the drainage pump with an exemplary arrangement of the bores.
  • a bore 7 ′ on the outer diameter 11 of the chamber 6, while another bore 7 ′′ is arranged in the vicinity of the inner diameter 12 of the chamber 6.
  • the chamber 6 has radial both on its outer diameter 11 and on its inner diameter 11 each have four evenly distributed bores 7 'and 7 ".
  • the arrows show the course of the liquid flow from the outer diameter 11 with bore 7 ', at which a higher pressure is present, to the inner diameter 12 with bore 7' ', at which there is a lower pressure, and from there to the center of the pump impeller. It has been of particular value proven, if the holes are dimensioned with a small cross-section, all holes have a diameter of 3.5 mm, for example.
  • a water-carrying household appliance with a drain pump 1, which has a pump impeller 3 with which liquid is conveyed, is created, in which the conveyance of air and liquid and the pumping capacity of the drain pump 1 are improved, and furthermore a corresponding drain pump 1 with a Pump impeller 3 provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a water-bearing domestic appliance comprising a drainage pump (1) with a pump impeller (3) and to a drainage pump (1) with a pump impeller (3). The inventive drainage pump (1) comprises a separate chamber (6), which is located behind the pump impeller (3) in relation to the direction of the flow of liquid and equipped with respective radial bores (7', 7'') on its external periphery (11) in addition to in the vicinity of its internal diameter (12). The separate chamber advantageously creates a flow of liquid from the external diameter to the internal diameter and subsequently into the centre of the pump impeller, improving the vortexing of the air and liquid and evacuating the produced mixture more effectively. The pump performance and the suction behaviour of the drainage pump are improved, without external resources and without the displacement of the transported medium caused by ventilation openings or channels in the pump housing.

Description

Wasserführendes Haushaltgerät mit einer Entleerungspumpe sowie Entleerungspumpe Water-bearing household appliance with a drain pump and drain pump
Die Erfindung betrifft ein wasserführendes Haushaltgerät mit einer Entleerungspumpe, die ein Pumpenlaufrad aufweist, mit Hilfe dessen Flüssigkeit gefördert wird sowie eine Entlee- rungspumpe mit einem Pumpenlaufrad.The invention relates to a water-carrying household appliance with a drain pump, which has a pump impeller, with the aid of which liquid is conveyed, and to a drain pump with a pump impeller.
Bei wasserführenden Haushaltgeräten wie Geschirrspülmaschinen oder Waschmaschinen wird eine Entleerungspumpe zum Abpumpen von verschmutzter Reinigungsflüssigkeit. Am Ende eines Entleerungsvorgangs gelangt Luft in das Pumpengehäuse. Diese angesaugte Luft konzentriert sich aufgrund der Druckverhältnisse im Zentrum des sich drehenden Pumpenlaufrads und führt zu einem abreißenden bzw. verminderten Förderstrom. Nachlaufende Flüssigkeitsmengen werden damit von der Entleerungspumpe nicht mehr oder verzögert abgepumpt. Jede Entleerungspumpe zeigt diese Probleme, die zu Betriebsstörungen führen bzw. andere aufwendige oder nachteilige Maßnahmen fordern.In the case of water-bearing household appliances such as dishwashers or washing machines, a drain pump is used to pump out dirty cleaning liquid. At the end of a draining process, air gets into the pump housing. This sucked-in air concentrates due to the pressure conditions in the center of the rotating pump impeller and leads to a tearing or reduced flow. Trailing amounts of liquid are therefore no longer pumped out or delayed by the drain pump. Each drain pump shows these problems, which lead to malfunctions or other complex or disadvantageous measures.
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 Wϊe- deranlaufen der Entleerungspumpe vermieden werden.A ventilation device for a drain pump in dishwashers is known from German utility model 94 06 463 U1, which has a ventilation opening on the suction side for the outflow of the air enclosed in the center of the drain pump. This ensures that malfunctions when restarting the drain pump are avoided.
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 of providing a water-conducting domestic appliance of the type described, in which the conveyance of air and liquid and the pumping capacity of the drainage pump are improved, and also to provide a corresponding drainage pump.
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 Unteransprü- chen angegeben. 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 Innendurch- messers 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, ins- besondere auch ohne externe Aufwendungen und ohne Verschleppung des Fördermediums verursacht durch Entlüftungsöffnungen oder Entlüftungskanäle im Pumpengehäuse.This object is achieved for the water-carrying household 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. Starting from a water-bearing household appliance with a drain pump that has a pump impeller and from a drain pump with a pump impeller, the drain pump according to the subject of the invention has a separate chamber, which is arranged behind the pump impeller in relation to the direction of the pumped liquid and radially on its outer diameter as well as holes in the vicinity of their inner diameter. The separate chamber advantageously creates a liquid flow from the outside diameter to the inside diameter and then into the center of the pump impeller, as a result of which the air is more swirled with the liquid and the resulting mixture is pumped out more effectively. The pumping capacity and the suction behavior of the drain pump improve, in particular also without external expenditure and without carry-over 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 drainage pump can be further improved from the outside diameter to the inside diameter of the separate chamber and from there to the center of the pump impeller for the mixing of liquid with air.
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, several bores are provided for the outside diameter and inside diameter. The bores for the outer diameter and inner diameter are preferably each distributed uniformly on the separate chamber. Both measures have a positive influence on the liquid flow in relation to the flow circuit of the drain pump.
Von besonderem Wert hat sich eine weitere Ausgestaltung der Erfindung erwiesen, wonach die Bohrungen einen kleinen Querschnitt aufweisen.A further embodiment of the invention has proven to be of particular value, according to which the bores 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 also advantageously used in the emptying 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-carrying household appliance with a drain pump, which has a pump impeller with the aid of which liquid is conveyed, is created at which improve the conveyance of air and liquid and the pumping capacity of the drain pump and also provide a corresponding drain pump with a pump impeller.
Der Gegenstand der Erfindung wird anhand eines in einer Figur dargestellten Ausfüh- rungsbeispiels näher erläutert. Im einzelnen zeigenThe object of the invention is explained in more detail with reference to an exemplary embodiment shown in a figure. Show in detail
Figur 1 eine Entleerungspumpe eines wasserführenden Haushaltgeräts gemäß der Erfindung, undFigure 1 is a drain pump of a water-bearing household appliance according to the invention, and
Figur 2 einen Ausschnitt der zur Entleerungspumpe gehörigen Kammer mit einer beispielhaften Anordnung der Bohrungen.Figure 2 shows a section of the chamber belonging to the drain pump with an exemplary arrangement of the holes.
Figur 1 zeigt eine erfindungsgemäße Entleerungspumpe 1 eines nicht näher dargestellten, erfindungsgemäßen wasserführenden Haushaltgeräts, typischerweise einer Ge- schirrspülmaschine 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 Pumpenlauf- rad 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 water-carrying household appliance according to the invention, not shown in more detail, typically a dishwasher or a washing machine, which has a pump housing 2 with a pump impeller 3. An inlet connection 4, via which liquid - for example water - can be conveyed into the pump impeller 3 or air can be sucked in, runs in the direction of the axis of the pump impeller 3 and is integrally formed on the inlet 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 wheel blades, is also located in the direction of the axis of the pump impeller 3 and is molded onto the pump housing 2 on the other side. In addition, the drain pump 1 has an outlet port 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 T 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 ver- wirbelt 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 object of the invention, the water-carrying household appliance has a drain pump 1 with a separate chamber 6, which is arranged behind the pump impeller 3 in relation to the direction of the liquid conveyed - ie the axis of the pump impeller 3 - and radially on its outside diameter 11 and in the vicinity of their inner diameter 12 each with bores T 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, as a result of which the air is better mixed with the liquid swirls and the resulting mixture 8 is pumped out more effectively. The pump performance and the suction behavior of the drain pump 1 improve, in particular also without external expenditure and without carryover of the conveying medium caused by ventilation openings or ventilation 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 1 1 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.The separate chamber 6 is advantageously arranged as close as possible to the pump impeller 3, as a result of which the liquid flow in the flow circuit - see arrows - of 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 improve even further. A plurality of bores 7 ′, 7 ″ are provided for the outer diameter 11 and inner diameter 12 and are preferably distributed evenly on the separate chamber 6. Both measures have a positive influence on the flow of liquid - see arrows - with regard to the flow circuit of the drainage 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 ih- rem 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 Quer- schnitt bemessen sind, so weisen alle Bohrungen beispielsweise jeweils 3.5 mm Durchmesser auf.For clarification, FIG. 2 shows a section of the separate chamber 6 belonging to the drainage pump with an exemplary arrangement of the bores. Thus there is a bore 7 ′ on the outer diameter 11 of the chamber 6, while another bore 7 ″ is arranged in the vicinity of the inner diameter 12 of the chamber 6. Overall, the chamber 6 has radial both on its outer diameter 11 and on its inner diameter 11 each have four evenly distributed bores 7 'and 7 ". The arrows show the course of the liquid flow from the outer diameter 11 with bore 7 ', at which a higher pressure is present, to the inner diameter 12 with bore 7' ', at which there is a lower pressure, and from there to the center of the pump impeller. It has been of particular value proven, if the holes are dimensioned with a small cross-section, all holes have a diameter of 3.5 mm, for example.
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-carrying household appliance with a drain pump 1, which has a pump impeller 3 with which liquid is conveyed, is created, in which the conveyance of air and liquid and the pumping capacity of the drain pump 1 are improved, and furthermore a corresponding drain pump 1 with a Pump impeller 3 provided.

Claims

Patentansprüche claims
1. Wasserführendes Haushaltgerät mit einer Entleerungspumpe, die ein Pumpenlaufrad aufweist, mit Hilfe dessen Flüssigkeit gefördert wird dadurch gekennzeichnet, dass die Entleerungspumpe (1) eine gesonderte Kammer (6) aufweist, die bezogen auf die Richtung der geförderten Flüssigkeit hinter dem Pumpenlaufrad (3) angeordnet und radial an ihrem Außendurchmesser (11) sowie in der Nähe ihres Innendurchmessers (12) jeweils mit Bohrungen (7', 7") versehen ist.1. Water-conducting household appliance with a drain pump, which has a pump impeller, with the aid of which liquid is conveyed, characterized in that the drain pump (1) has a separate chamber (6), which is based on the direction of the conveyed liquid behind the pump impeller (3) arranged and provided radially on its outer diameter (11) and in the vicinity of its inner diameter (12) with holes (7 ', 7 ").
2. Wasserführendes Haushaltgerät nach Anspruch 1 , dadurch gekennzeichnet, dass die gesonderte Kammer (6) möglichst nahe dem Pumpenlaufrad (3) angeordnet ist.2. Water-conducting household appliance according to claim 1, characterized in that the separate chamber (6) is arranged as close as possible to the pump impeller (3).
3. Wasserführendes Haushaltgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mehrere Bohrungen (7', 7") für Außendurchmesser (11) und Innendurchmesser (12) vorgesehen sind.3. Water-conducting household appliance according to one of the preceding claims, characterized in that a plurality of bores (7 ', 7 ") are provided for the outer diameter (11) and inner diameter (12).
4. Wasserführendes Haushaltgerät nach einem der vorhergehenden Ansprüche, da- durch gekennzeichnet, dass die Bohrungen (7', 7") für Außendurchmesser (11) und Innendurchmesser (12) jeweils gleichmäßig verteilt an der gesonderten Kammer (6) angebracht sind.4. Water-conducting household appliance according to one of the preceding claims, characterized in that the bores (7 ', 7 ") for the outer diameter (11) and inner diameter (12) are each distributed uniformly on the separate chamber (6).
5. Wasserführendes Haushaltgerät nach einem der vorhergehenden Ansprüche, da- durch gekennzeichnet, dass die Bohrungen (7', 7") einen kleinen Querschnitt aufweisen.5. Water-conducting household appliance according to one of the preceding claims, characterized in that the bores (7 ', 7 ") have a small cross section.
6. Wasserführendes Haushaltgerät nach einem der vorhergehenden Ansprüche, zum Einsatz in einer Geschirrspülmaschine.6. Water-carrying household appliance according to one of the preceding claims, for use in a dishwasher.
7. Wasserführendes Haushaltgerät nach einem Ansprüche 1 bis 5, zum Einsatz in einer Waschmaschine. 7. Water-carrying household appliance according to one of claims 1 to 5, for use in a washing machine.
8. Entleerungspumpe mit einem Pumpenlaufrad, mit Hilfe dessen Flüssigkeit gefördert wird, dadurch gekennzeichnet, dass die Entleerungspumpe (1) eine gesonderte Kammer (6) aufweist, die bezogen auf die Richtung der geförderten Flüssigkeit hinter dem Pumpenlaufrad (3) angeordnet und radial an ihrem Außendurchmesser (11) sowie in der Nähe ihres Innendurchmessers (12) jeweils mit Bohrun- gen (7', 7") versehen ist.8. emptying pump with a pump impeller, with the aid of which liquid is conveyed, characterized in that the emptying pump (1) has a separate chamber (6) which is arranged in relation to the direction of the conveyed liquid behind the pump impeller (3) and radially on it The outer diameter (11) and in the vicinity of their inner diameter (12) are each provided with bores (7 ', 7 ").
9. Entleerungspumpe nach Anspruch 8, dadurch gekennzeichnet, dass die gesonderte Kammer (6) möglichst nahe dem Pumpenlaufrad (3) angeordnet ist.9. Drain pump according to claim 8, characterized in that the separate chamber (6) is arranged as close as possible to the pump impeller (3).
10. Entleerungspumpe nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass mehrere Bohrungen (7', 7") für Außendurchmesser (11) und Innendurchmesser (12) vorgesehen sind.10. Drainage pump according to claim 8 or 9, characterized in that a plurality of bores (7 ', 7 ") for the outer diameter (11) and inner diameter (12) are provided.
11. Entleerungspumpe nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass die Bohrungen (7', 7") für Außendurchmesser (11) und Innendurchmesser11. Drain pump according to one of claims 8 to 10, characterized in that the bores (7 ', 7 ") for outer diameter (11) and inner diameter
(12) jeweils gleichmäßig verteilt an der gesonderten Kammer (6) angebracht sind.(12) are each evenly distributed on the separate chamber (6).
12. Entleerungspumpe nach einem der Ansprüche 8 bis 11 , dadurch gekennzeichnet, dass die Bohrungen (7', 7") einen kleinen Querschnitt aufweisen.12. Drainage pump according to one of claims 8 to 11, characterized in that the bores (7 ', 7 ") have a small cross section.
13. Entleerungspumpe nach einem der Ansprüche 8 bis 12, dadurch gekennzeichnet, dass die Entleerungspumpe (1) in einer Geschirrspülmaschine zum Einsatz kommt.13. Drain pump according to one of claims 8 to 12, characterized in that the drain pump (1) is used in a dishwasher.
14. Entleerungspumpe nach einem Ansprüche 8 bis 12, dadurch gekennzeichnet, dass die Entleerungspumpe (1) in einer Waschmaschine zum Einsatz kommt. 14. Drain pump according to one of claims 8 to 12, characterized in that the drain 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

Publications (2)

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

Family

ID=32598083

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

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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
WO2008031011A1 (en) * 2006-09-08 2008-03-13 Cardiomems, Inc. 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
DE3670347D1 (en) * 1985-12-24 1990-05-17 Holset Engineering Co 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 Hausgeräte GmbH, 81669 München 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 automatic 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004055373A1 *

Also Published As

Publication number Publication date
US7597110B2 (en) 2009-10-06
US20060147327A1 (en) 2006-07-06
WO2004055373A1 (en) 2004-07-01
EP1576291B1 (en) 2016-08-31
AU2003292128A1 (en) 2004-07-09

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