EP1247993A2 - Pump, in particular centrifugal circulating pump for household appliances using water - Google Patents

Pump, in particular centrifugal circulating pump for household appliances using water Download PDF

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Publication number
EP1247993A2
EP1247993A2 EP02005593A EP02005593A EP1247993A2 EP 1247993 A2 EP1247993 A2 EP 1247993A2 EP 02005593 A EP02005593 A EP 02005593A EP 02005593 A EP02005593 A EP 02005593A EP 1247993 A2 EP1247993 A2 EP 1247993A2
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EP
European Patent Office
Prior art keywords
pump
housing
circulation pump
pump housing
impeller
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
EP02005593A
Other languages
German (de)
French (fr)
Other versions
EP1247993A3 (en
EP1247993B1 (en
Inventor
Walter Assmann
Ulrich Hettenhausen
Volker Marks
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Miele und Cie KG
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Miele und Cie KG
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Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP1247993A2 publication Critical patent/EP1247993A2/en
Publication of EP1247993A3 publication Critical patent/EP1247993A3/en
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Publication of EP1247993B1 publication Critical patent/EP1247993B1/en
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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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4285—Water-heater arrangements
    • 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 
    • D06F39/04—Heating arrangements
    • 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
    • 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

Definitions

  • the invention relates to a pump, in particular a centrifugal pump as a circulation pump for water-bearing household appliances, such as dishwashers or washing machines, which with an electrical heating device inside the pump housing for heating the rinse water is formed, and in which the pump housing with suction and discharge nozzle and with a radially compressing impeller rotating in the housing for the transport of the Rinsing liquid is provided.
  • a pump in particular a centrifugal pump as a circulation pump for water-bearing household appliances, such as dishwashers or washing machines, which with an electrical heating device inside the pump housing for heating the rinse water is formed, and in which the pump housing with suction and discharge nozzle and with a radially compressing impeller rotating in the housing for the transport of the Rinsing liquid is provided.
  • the exposed in Pump pressure space arranged heater also limits the accommodation or Arrangement of the pressure nozzle on the pump housing significantly and also creates a high Construction volume of the pump room with an undesirably large unused free or dead space. The invention is also intended to remedy this.
  • the invention therefore presents the problem of a circulation pump with a small overall volume and a good pump efficiency and optimal flow conditions of the tubular heating elements to create the integrated heating device.
  • the rotational symmetry of the pump housing Due to the rotational symmetry of the pump housing, a simple modular construction is possible for everyone Pump components possible.
  • the symmetry of the pump chamber results in a largely parallel inflow of the tubular wound radiators with respect to their longitudinal axis the heating device integrated in the pump housing, which causes eddy formation and Flow separations that can lead to local overheating can be effectively avoided.
  • the rotationally symmetrical as flow-calmed pressure space favors partitioned pump room in which the heating device is located, the uniform Flow with good heat dissipation with low wall friction on the heating pipes, so that the pump efficiency is not adversely affected.
  • a known pump shown in Figure 1, in particular a centrifugal pump as Circulation pump (1) for water-bearing household appliances, such as dishwashers or Washing machine is with an electric heater (2) inside the pump housing (3) designed for rinsing water heating, the pump housing (3) with Intake and discharge nozzle (4 or 5, 5 ') and with a radial compression in the housing Impeller (6) is provided for the transport of the rinsing liquid.
  • the heating device (2) for heating flushing or used in the above-mentioned water-carrying device Cleaning liquid is in the pump housing (3) in the water flow of the circulation pump (1) installed between the intake port (4) and the pressure port (5, 5 ') and as one of the flushing liquid flushed tubular heater (7) formed.
  • the tubular heating element (7) is annular all around preferably in the manner of a wound solenoid with one or more turns wound and concentrically surrounds the impeller (6).
  • Such a coiled tubular heater (7) Heating device (2) is advantageously in the pump housing (3), for example Pump cover mounted, the electrical connections (9) insulated and the liquid-tight Reach through the cup-shaped housing wall of the pump housing (3).
  • the pump housing (3) is for the build-up of pressure of the rinsing liquid to be pumped in the usual design in a helical shape designed and detachably mounted on the motor housing (10) of the pump.
  • the in the pump housing (3) arranged heating device with the exposed flushed tubular heater (7) forms the surrounding pump housing (3) a water heater with good power utilization and with high efficiency, because all the heat in the rinse water circulation on the Rinsing liquid is transferred directly.
  • the pump efficiency is not as optimal to view, because between the inside of the pump housing (3) in the free water flow Intake and discharge nozzle (4 or 5, 5 ') of the pump arranged tubular heater (7) one uncontrollable swirling of the flowing rinsing liquid due to the exposure Generate tubular heater (7).
  • the present invention solves this problem by that on the one hand the pump housing (3) of the circulation pump (1) with the impeller (6) rotationally symmetrical surrounding pump chamber (11) is formed. On the other hand, it is circular pump chamber (11) in a the impeller (6) receiving flow-intensive impeller chamber (12), a downstream of the impeller chamber (12) Diffuser space (13), in which part of the flow velocity is converted into pressure, and divided into a flow-reduced pressure chamber (14) arranged downstream of this space. Of one or more pressure ports (5, 5 ') branch off from the flow-reduced pressure chamber (14). According to the invention, the heating device (2) is also located in this pressure chamber (14) the training as a tubular heater (7), which as a spiral (Fig.
  • the heating device (2) is thus in the flow-reduced pressure chamber (14) designed as a rotationally symmetrical annular heating module (tubular heater 7).
  • the tubular heater (7) is simply wound and preferably on the pump housing cover (8), sh. also Fig. 4, the circulation pump (1) z. B. releasably attached, according to Fig. 2 still maintained a safety distance from the walls of the pump housing (3) is.
  • the separate pump housing cover (8) made of plastic or metal closes the pump housing (3) liquid-tight (ring seal 15).
  • the diffuser space (13) is designed as a ring diffuser.
  • the diffuser space (13) is formed by a rotationally symmetrical web wall (16) fixed to the housing.
  • the web wall (16) is seen in the flow direction (see arrow) of the rinsing liquid concentric to the impeller (6) the pump and in front of it radially aligned with the impeller circumference.
  • the web wall (16) itself is designed in the shape of an annular disk and can be attached to an at least approximately cylindrical and Insert (18) of the pump housing arranged in the pump housing (3) in the same axis as the impeller (6) (3) be formed, which limits the dimensions of the rooms (12 to 14).
  • the insert (18) expediently forms on the pump housing (3) with the suction nozzle (4) Component.
  • the division of the pump chamber (11) into the flow-intensive impeller chamber (12) and the flow-calmed pressure chamber (14), the between these two spaces from the annular disk-shaped web wall (16) and the adjacent impeller chamber walls (pump housing wall 19) formed diffuser space (13) is essential for efficiency optimization the circulation pump (1).
  • the speed energy of the transported Medium (rinsing liquid) which flows from the impeller (6) into the diffuser space (13), has a high circumferential component. When flowing into the flow-reduced pressure chamber (14) a large part of it is converted into pressure energy.
  • the pump chamber (11) or the pump housing (3) of the invention Pump is rotationally symmetrical, prevails everywhere in the divided pressure chamber (14) approximately constant pressure. Therefore the position of the outlet nozzle is at flow-reduced pressure chamber (14) advantageously freely selectable and thus also to problematic Installation conditions of the pump in the household appliance can be adjusted to save space.
  • the rotationally symmetrical flow-reduced pressure chamber (14) can advantageously be the annular Pick up tubular heating element (7).
  • the flow velocity is in the pressure chamber despite the greatly reduced peripheral component (14) the heating device (2), on the one hand, is sufficient for reliable heat dissipation, on the other hand so low that the pump efficiency is not due to wall friction Heating pipes is affected.
  • the rotational symmetry causes a largely parallel Inflow to the heating tubular heater (7) with respect to its longitudinal axis. This will Vortex formation and flow separation, which can lead to local overheating, are avoided. Therefore calcification and contamination of the heating device (2) can occur the liquid flowing through can be almost excluded.
  • the rotationally symmetrical pump housing (3) carrying the pressure ports (5, 5 ') is on the pump suction side closed with the aforementioned pump housing cover (8), which the Surrounds the intake manifold (4).
  • pump housing cover according to FIG. 2 with the suction nozzle (4) and / or the insert (18) for the ring diffuser (13) and pressure chamber (14) in one piece can be trained.
  • the housing cover and / or the impeller compartment (12), diffuser compartment (13) and pressure chamber (14) forming pump housing (3) can be made of metal or Plastic.
  • the pump housing (3) can also be a metal part (21) with an integrated variant Tubular radiators (7) according to FIG. 3 of the heating device (2) are formed, wherein the intake manifold (4) with the pump cover of the circulation pump (1) and the diffuser insert (18) then form a structural unit (Fig. 3). It's separate between these parts circular pump housing (3) arranged by sealing rings (15) held liquid-tight.
  • the pump housing (3) On the outside of the pump housing (3) there are safety devices, such as thermal switches (20), Pressure switches, turbidity sensors or the like. Preferably in embossments of the pump housing (3) and / or the pump housing cover (8) or in embossments in the metal part (21) arranged.
  • the rotational symmetry (circular shape) of the pump chamber (11) favors the simple one modular construction of the pump; especially as a pre-assembled, separately testable unit. at You can also add several radiators with different heating capacities to the demand Integrate the pump housing (3) in the pressure chamber (14).

Abstract

Pump has a pump housing (3) with a pump chamber (11) arranged in a rotationally symmetric manner about an impeller (6). A diffuser chamber (13) is arranged downstream from the impeller chamber to change a part of the flow speed into pressure. Downstream from the diffuser is a pressure chamber (14) in which the flow is calmed prior to delivery to a number of pressure branches (5, 5') which branch off from the chamber. A heater (2) is contained within the pressure chamber.

Description

Die Erfindung betrifft eine Pumpe, insbesondere eine Kreiselpumpe als Umwälzpumpe für wasserführende Haushaltgeräte, wie Geschirrspülmaschinen oder Waschmaschinen, welche mit einer elektrischen Heizungseinrichtung innerhalb des Pumpengehäuses zur Spülwassererwärmung ausgebildet ist, und bei welcher das Pumpengehäuse mit Ansaug- und Druckstutzen und mit einem im Gehäuse umlaufenden radial verdichtenden Laufrad für den Transport der Spülflüssigkeit versehen ist.The invention relates to a pump, in particular a centrifugal pump as a circulation pump for water-bearing household appliances, such as dishwashers or washing machines, which with an electrical heating device inside the pump housing for heating the rinse water is formed, and in which the pump housing with suction and discharge nozzle and with a radially compressing impeller rotating in the housing for the transport of the Rinsing liquid is provided.

Eine derartige Umwälzpumpe ist aus der DE 198 52 569 A1 bekannt.Such a circulation pump is known from DE 198 52 569 A1.

Die bei dem bekannten Technikstand innerhalb des Pumpengehäuses im freien Wasserlauf zwischen Ansaug- und Druckstutzen der Pumpe angeordnete Heizungseinrichtung erzeugt einen schlechten Pumpenwirkungsgrad durch eine unkontrollierbare Verwirbelung der strömenden Spülflüssigkeit infolge der freiliegenden Rohrheizkörper. Wegen der ungünstigen Anströmung der Rohrheizkörper mit der mehr oder weniger schmutzbelasteten Spülflüssigkeit besitzt die bekannte Pumpe darüber hinaus eine erhöhte Verschmutzungsneigung. Die freiliegend im Pumpendruckraum angeordnete Heizungseinrichtung schränkt auch die Unterbringung oder Anordnung der Druckstutzen am Pumpengehäuse wesentlich ein und schafft zudem ein hohes Bauvolumen des Pumpenraumes mit einem unerwünscht großen ungenutzten Frei- oder Totraum. Auch hier soll die Erfindung Abhilfe schaffen.The free water flow in the known state of the art within the pump housing heating device arranged between the suction and pressure ports of the pump poor pump efficiency due to uncontrollable swirling of the flowing Flushing liquid due to the exposed tubular heater. Because of the unfavorable inflow the tubular heater with the more or less dirty washing liquid the known pump also has an increased tendency to become contaminated. The exposed in Pump pressure space arranged heater also limits the accommodation or Arrangement of the pressure nozzle on the pump housing significantly and also creates a high Construction volume of the pump room with an undesirably large unused free or dead space. The invention is also intended to remedy this.

Der Erfindung stellt sich somit das Problem, eine Umwälzpumpe mit geringem Bauvolumen und einem guten Pumpenwirkungsgrad sowie optimalen Anströmverhältnissen der Rohrheizkörper der integrierten Heizungseinrichtung zu schaffen.The invention therefore presents the problem of a circulation pump with a small overall volume and a good pump efficiency and optimal flow conditions of the tubular heating elements to create the integrated heating device.

Ausgehend von einer Pumpe, insbesondere einer Kreiselpumpe als Umwälzpumpe für wasserführende Haushaltgeräte wird dieses Problem erfindungsgemäß mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.Starting from a pump, especially a centrifugal pump as a circulation pump for water-carrying Household appliances solve this problem according to the invention with the features of Claim 1 solved. Advantageous refinements and developments of the invention result from the following subclaims.

Durch die Rotationssymmetrie des Pumpengehäuses ist ein einfacher modularer Aufbau aller Pumpenbauteile möglich. Die Symmetrie der Pumpenkammer bewirkt eine weitestgehend parallele Anströmung der ringförmig gewickelten Rohrheizkörper bezüglich deren Längsachse der im Pumpengehäuse integrierten Heizungseinrichtung, wodurch eine Wirbelbildung und Strömungsablösungen, die zu lokalen Überhitzungen führen können, wirksam vermieden werden. Insbesondere begünstigt der rotationssymmetrische als strömungsberuhigter Druckraum abgeteilte Pumpenraum, in dem sich die Heizungseinrichtung befindet, die gleichmäßige Strömung mit guter Wärmeabfuhr bei niedriger Wandreibung an den Heizungsrohren, so dass der Pumpenwirkungsgrad nicht negativ beeinflusst wird.Due to the rotational symmetry of the pump housing, a simple modular construction is possible for everyone Pump components possible. The symmetry of the pump chamber results in a largely parallel inflow of the tubular wound radiators with respect to their longitudinal axis the heating device integrated in the pump housing, which causes eddy formation and Flow separations that can lead to local overheating can be effectively avoided. In particular, the rotationally symmetrical as flow-calmed pressure space favors partitioned pump room in which the heating device is located, the uniform Flow with good heat dissipation with low wall friction on the heating pipes, so that the pump efficiency is not adversely affected.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
eine als Kreiselpumpe ausgebildete Umwälzpumpe nach dem Stand der Technik mit geöffnetem Pumpengehäuse und eingebauter Heizungseinrichtung, in perspektivischer Ansicht,
Figur 2
eine Umwälzpumpe mit eingebauter Heizungseinrichtung und mit einem Pumpengehäuse nach der Erfindung im Längsschnitt,
Figur 3
das Pumpengehäuse in einer anderen Ausführung, im Längsschnitt,
Figur 4
ein weiteres Ausführungsbeispiel für das Pumpengehäuse.
An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows
Figure 1
a circulation pump designed as a centrifugal pump according to the prior art with an open pump housing and built-in heating device, in a perspective view,
Figure 2
a circulating pump with built-in heating device and with a pump housing according to the invention in longitudinal section,
Figure 3
the pump housing in another version, in longitudinal section,
Figure 4
another embodiment for the pump housing.

Eine in Figur 1 dargestellte an sich bekannte Pumpe, insbesondere eine Kreiselpumpe als Umwälzpumpe (1) für wasserführende Haushaltgeräte, wie Geschirrspülmaschinen oder Waschmaschinen ist mit einer elektrischen Heizungseinrichtung (2) innerhalb des Pumpengehäuses (3) zur Spülwassererwärmung ausgebildet, wobei das Pumpengehäuse (3) mit Ansaug- und Druckstutzen (4 bzw. 5, 5') und mit einem im Gehäuse umlaufenden radial verdichtenden Laufrad (6) für den Transport der Spülflüssigkeit versehen ist. Die Heizungseinrichtung (2) zur Erwärmung von in dem vorerwähnten wasserführenden Gerät benutzte Spüloder Reinigungsflüssigkeit ist im Pumpengehäuse (3) im Wasserlauf der Umwälzpumpe (1) zwischen Ansaugstutzen (4) und Druckstutzen (5, 5') installiert und als ein von der Spülflüssigkeit umspülter Rohrheizkörper (7) ausgebildet. Durch die Anordnung der Heizung im Wasserlauf werden Wärmeverluste vorteilhaft vermieden. Der Rohrheizkörper (7) ist umlaufend ringförmig vorzugsweise in Art einer gewickelten Zylinderspule mit einer oder mehreren Windungen gewunden und umgibt das Laufrad (6) konzentrisch. Ein so gewundener Rohrheizkörper (7) der Heizungseinrichtung (2) ist vorteilhaft im Pumpengehäuse (3) beispielsweise am Pumpendeckel montiert, wobei die elektrischen Anschlüsse (9) isoliert und flüssigkeitsdicht die topfförmige Gehäusewand des Pumpengehäuses (3) durchgreifen. Das Pumpengehäuse (3) ist für den Druckaufbau der zu fördernden Spülflüssigkeit in üblicher Ausbildung schneckenförmig gestaltet und lösbar am Motorgehäuse (10) der Pumpe montiert. Die im Pumpengehäuse (3) angeordnete Heizeinrichtung mit dem freiliegenden umspülten Rohrheizkörper (7) bildet mit dem umgebenden Pumpengehäuse (3) einen Durchlauferhitzer mit guter Leistungsausnutzung und mit hohem Wirkungsgrad, da alle Wärme bei der Spülwasserumwälzung auf die Spülflüssigkeit direkt übertragen wird. Jedoch ist der Pumpenwirkungsgrad nicht als optimal anzusehen, weil die innerhalb des Pumpengehäuses (3) im freien Wasserlauf zwischen Ansaug- und Druckstutzen (4 bzw. 5, 5') der Pumpe angeordneten Rohrheizkörper (7) eine unkontrollierbare Verwirbelung der strömenden Spülflüssigkeit infolge der freiliegenden Rohrheizkörper (7) erzeugen.A known pump shown in Figure 1, in particular a centrifugal pump as Circulation pump (1) for water-bearing household appliances, such as dishwashers or Washing machine is with an electric heater (2) inside the pump housing (3) designed for rinsing water heating, the pump housing (3) with Intake and discharge nozzle (4 or 5, 5 ') and with a radial compression in the housing Impeller (6) is provided for the transport of the rinsing liquid. The heating device (2) for heating flushing or used in the above-mentioned water-carrying device Cleaning liquid is in the pump housing (3) in the water flow of the circulation pump (1) installed between the intake port (4) and the pressure port (5, 5 ') and as one of the flushing liquid flushed tubular heater (7) formed. By arranging the heater in the watercourse heat losses are advantageously avoided. The tubular heating element (7) is annular all around preferably in the manner of a wound solenoid with one or more turns wound and concentrically surrounds the impeller (6). Such a coiled tubular heater (7) Heating device (2) is advantageously in the pump housing (3), for example Pump cover mounted, the electrical connections (9) insulated and the liquid-tight Reach through the cup-shaped housing wall of the pump housing (3). The pump housing (3) is for the build-up of pressure of the rinsing liquid to be pumped in the usual design in a helical shape designed and detachably mounted on the motor housing (10) of the pump. The in the pump housing (3) arranged heating device with the exposed flushed tubular heater (7) forms the surrounding pump housing (3) a water heater with good power utilization and with high efficiency, because all the heat in the rinse water circulation on the Rinsing liquid is transferred directly. However, the pump efficiency is not as optimal to view, because between the inside of the pump housing (3) in the free water flow Intake and discharge nozzle (4 or 5, 5 ') of the pump arranged tubular heater (7) one uncontrollable swirling of the flowing rinsing liquid due to the exposure Generate tubular heater (7).

Die vorliegende Erfindung löst, wie insbesondere in Fig. 2 dargestellt, diese Problem dadurch, dass zum einen das Pumpengehäuse (3) der Umwälzpumpe (1) mit einer das Laufrad (6) rotationssymmetrisch umgebenden Pumpenkammer (11) ausgebildet ist. Zum anderen ist die kreisförmige Pumpenkammer (11) in einen das Laufrad (6) aufnehmenden strömungsintensiven Laufradraum (12), einen dem Laufradraum (12) nachgeschalteten Diffusorraum (13), in dem ein Teil der Strömungsgeschwindigkeit in Druck umgewandelt wird, und in einen diesem Raum nachgeordneten strömungsberuhigten Druckraum (14) geteilt. Von dem strömungsberuhigten Druckraum (14) zweigen ein oder mehrere Druckstutzen (5, 5') ab. In diesem Druckraum (14) befindet sich auch erfindungsgemäß die Heizungseinrichtung (2) in der Ausbildung als Rohrheizkörper (7), welcher als Spirale (Fig. 4) bzw. umlaufend ringförmig (Fig. 2, 3 und 4) vorzugsweise in Art einer gewickelten Zylinderspule ein- oder mehrfach gewunden ist. Die Heizungseinrichtung (2) ist somit im strömungsberuhigten Druckraum (14) als rotationssymmetrisches ringförmiges Heizmodul (Rohrheizkörper 7) ausgebildet. Gemäß Fig. 2 ist der Rohrheizkörper (7) dabei einfach gewunden und vorzugsweise am Pumpen-Gehäusedeckel (8), sh. auch Fig. 4, der Umwälzpumpe (1) z. B. lösbar befestigt, wobei gemäß Fig. 2 noch ein Sicherheitsabstand zu den Wandungen des Pumpengehäuses (3) eingehalten ist. Der aus Kunststoff oder Metall bestehende separate Pumpen-Gehäusedeckel (8) schließt das Pumpengehäuse (3) flüssigkeitsdicht (Ringdichtung 15) ab.The present invention, as shown particularly in FIG. 2, solves this problem by that on the one hand the pump housing (3) of the circulation pump (1) with the impeller (6) rotationally symmetrical surrounding pump chamber (11) is formed. On the other hand, it is circular pump chamber (11) in a the impeller (6) receiving flow-intensive impeller chamber (12), a downstream of the impeller chamber (12) Diffuser space (13), in which part of the flow velocity is converted into pressure, and divided into a flow-reduced pressure chamber (14) arranged downstream of this space. Of one or more pressure ports (5, 5 ') branch off from the flow-reduced pressure chamber (14). According to the invention, the heating device (2) is also located in this pressure chamber (14) the training as a tubular heater (7), which as a spiral (Fig. 4) or circumferentially annular (Fig. 2, 3 and 4) preferably in the manner of a wound solenoid one or more times is winding. The heating device (2) is thus in the flow-reduced pressure chamber (14) designed as a rotationally symmetrical annular heating module (tubular heater 7). According to Fig. 2, the tubular heater (7) is simply wound and preferably on the pump housing cover (8), sh. also Fig. 4, the circulation pump (1) z. B. releasably attached, according to Fig. 2 still maintained a safety distance from the walls of the pump housing (3) is. The separate pump housing cover (8) made of plastic or metal closes the pump housing (3) liquid-tight (ring seal 15).

Zur Erzielung eines optimalen Druckaufbaus in der rotationsymmetrischen Pumpenkammer (11) ist der Diffusorraum (13) als Ringdiffusor ausgebildet. Der Diffusorraum (13) wird durch eine gehäusefeste rotationssymmetrische Stegwand (16) gebildet. Die Stegwand (16) ist in Strömungsrichtung (siehe Pfeil) der Spülflüssigkeit gesehen konzentrisch zum Laufrad (6) der Pumpe und vor diesem radial zum Laufradumfang ausgerichtet. Die Stegwand (16) selbst ist ringscheibenförmig gestaltet und kann an einem zumindest annähernd zylindrischen und achsgleich zum Laufrad (6) im Pumpengehäuse (3) angeordneten Einsatz (18) des Pumpengehäuses (3) ausgebildet sein, welcher die Räume (12 bis 14) in ihren Abmessungen begrenzt. Der Einsatz (18) bildet zweckmäßig mit dem Ansaugstutzen (4) am Pumpengehäuse (3) ein Bauteil. Auch kann die Heizungseinrichtung (2) im Pumpengehäuse (3) am Einsatz (18) montiert oder als separat montierbarer Teil des Pumpengehäuses (3) ausgebildet werden.To achieve an optimal pressure build-up in the rotationally symmetrical pump chamber (11) the diffuser space (13) is designed as a ring diffuser. The diffuser space (13) is formed by a rotationally symmetrical web wall (16) fixed to the housing. The web wall (16) is seen in the flow direction (see arrow) of the rinsing liquid concentric to the impeller (6) the pump and in front of it radially aligned with the impeller circumference. The web wall (16) itself is designed in the shape of an annular disk and can be attached to an at least approximately cylindrical and Insert (18) of the pump housing arranged in the pump housing (3) in the same axis as the impeller (6) (3) be formed, which limits the dimensions of the rooms (12 to 14). The insert (18) expediently forms on the pump housing (3) with the suction nozzle (4) Component. The heating device (2) in the pump housing (3) on the insert (18) assembled or designed as a separately mountable part of the pump housing (3).

Die Unterteilung der Pumpenkammer (11) in den strömungsintensiven Laufradraum (12) und den strömungsberuhigten Druckraum (14), wobei zwischen diesen beiden Räumen der aus der ringscheibenförmigen Stegwand (16) und den angrenzenden Laufrad-Raumwänden-(Pumpengehäusewand 19) gebildete Diffusorraum (13) angeordnet ist, ist wesentlich für die Wirkungsgradoptimierung der Umwälzpumpe (1). Die Geschwindigkeitsenergie des transportierten Mediums (Spülflüssigkeit), welches aus dem Laufrad (6) in den Diffusorraum (13) strömt, besitzt eine hohe Umfangskomponente. Beim Einströmen in den strömungsberuhigten Druckraum (14) wird ein großer Teil davon in Druckenergie umgewandelt.The division of the pump chamber (11) into the flow-intensive impeller chamber (12) and the flow-calmed pressure chamber (14), the between these two spaces from the annular disk-shaped web wall (16) and the adjacent impeller chamber walls (pump housing wall 19) formed diffuser space (13) is essential for efficiency optimization the circulation pump (1). The speed energy of the transported Medium (rinsing liquid) which flows from the impeller (6) into the diffuser space (13), has a high circumferential component. When flowing into the flow-reduced pressure chamber (14) a large part of it is converted into pressure energy.

Da im Gegensatz zu den Kreiselpumpen nach dem Stand der Technik mit Schneckengehäusen (Fig. 1) die Pumpenkammer (11) bzw. das Pumpengehäuse (3) der erfindungsgemäßen Pumpe rotationssymmetrisch ausgeführt ist, herrscht in dem abgeteilten Druckraum (14) überall annähernd konstanter Druck. Daher ist die Position der Auslassstutzen am strömungsberuhigten Druckraum (14) vorteilhaft frei wählbar und somit auch an problemvolle Einbauverhältnisse der Pumpe im Haushaltgerät raumsparend anpassbar. Der rotationssymmetrische strömungsberuhigte Druckraum (14) kann vorteilhaft den ringförmigen Rohrheizkörper (7) aufnehmen.In contrast to the centrifugal pumps according to the prior art, with screw housings (Fig. 1) the pump chamber (11) or the pump housing (3) of the invention Pump is rotationally symmetrical, prevails everywhere in the divided pressure chamber (14) approximately constant pressure. Therefore the position of the outlet nozzle is at flow-reduced pressure chamber (14) advantageously freely selectable and thus also to problematic Installation conditions of the pump in the household appliance can be adjusted to save space. The rotationally symmetrical flow-reduced pressure chamber (14) can advantageously be the annular Pick up tubular heating element (7).

Die Strömungsgeschwindigkeit ist trotz stark reduzierter Umfangskomponente im Druckraum (14) der Heizungseinrichtung (2) einerseits ausreichend zur sicheren Wärmeabfuhr, andererseits aber so niedrig, dass der Pumpenwirkungsgrad nicht durch Wandreibung an den Heizrohren beeinträchtigt wird. Die Rotationssymmetrie bewirkt eine weitestgehend parallele Anströmung der Heizungs-Rohrheizkörper (7) bezüglich ihrer Längsachse. Hierdurch werden Wirbelbildung und Strömungsablösung, die zu lokalen Überhitzungen führen können, vermieden. Deshalb kann ein Verkalken sowie ein Verschmutzen der Heizungseinrichtung (2) in der durchlaufenden Flüssigkeit nahezu ausgeschlossen werden.The flow velocity is in the pressure chamber despite the greatly reduced peripheral component (14) the heating device (2), on the one hand, is sufficient for reliable heat dissipation, on the other hand so low that the pump efficiency is not due to wall friction Heating pipes is affected. The rotational symmetry causes a largely parallel Inflow to the heating tubular heater (7) with respect to its longitudinal axis. This will Vortex formation and flow separation, which can lead to local overheating, are avoided. Therefore calcification and contamination of the heating device (2) can occur the liquid flowing through can be almost excluded.

Das die Druckstutzen (5, 5') tragende rotationssymmetrische Pumpengehäuse (3) ist pumpenansaugseitig mit dem schon erwähnten Pumpen-Gehäusedeckel (8) verschlossen, welcher den Ansaugstutzen (4) zentrisch umgibt.The rotationally symmetrical pump housing (3) carrying the pressure ports (5, 5 ') is on the pump suction side closed with the aforementioned pump housing cover (8), which the Surrounds the intake manifold (4).

Es versteht sich, dass der Pumpen-Gehäusedeckel auch nach Fig. 2 mit dem Ansaugstutzen (4) und/oder dem Einsatz (18) für den Ringdiffusor (13) und Druckraum (14) einteilig ausgebildet sein kann. Der Gehäusedeckel und/oder das den Laufradraum (12), Diffusorraum (13) und Druckraum (14) bildende Pumpengehäuse (3) kann dabei aus Metall oder Kunststoff bestehen.It goes without saying that the pump housing cover according to FIG. 2 with the suction nozzle (4) and / or the insert (18) for the ring diffuser (13) and pressure chamber (14) in one piece can be trained. The housing cover and / or the impeller compartment (12), diffuser compartment (13) and pressure chamber (14) forming pump housing (3) can be made of metal or Plastic.

Andererseits kann das die Druckstutzen (5, 5') tragende rotationssymmetrische Pumpengehäuse (3) lösbar gemäß Fig. 3 oder fest gemäß Fig. 2 und 4 mit dem Pumpenlagerschild für das Laufrad (6) verbunden werden, wobei das Pumpengehäuse (3) auch einteilig mit dem Pumpenlagerschild vorzugsweise als Kunststoffspritzteil gefertigt sein kann. Nach einer weiteren Ausführungsvariante kann das Pumpengehäuse (3) auch als Metallteil (21) mit integrierten Rohrheizkörpern (7) gemäß Fig. 3 der Heizungseinrichtung (2) ausgebildet werden, wobei der Ansaugstutzen (4) mit dem Pumpendeckel der Umwälzpumpe (1) sowie der Diffusor-Einsatz (18) dann eine Baueinheit (Fig. 3) bilden. Zwischen diesen Teilen ist das separate kreisrunde Pumpengehäuse (3) durch Dichtringe (15) flüssigkeitsdicht gehalten angeordnet.On the other hand, the rotationally symmetrical pump housing carrying the pressure ports (5, 5 ') (3) detachable according to FIG. 3 or fixed according to FIGS. 2 and 4 with the pump bearing plate for the impeller (6) are connected, the pump housing (3) also being integral with the Pump end shield can preferably be made as a molded plastic part. After another The pump housing (3) can also be a metal part (21) with an integrated variant Tubular radiators (7) according to FIG. 3 of the heating device (2) are formed, wherein the intake manifold (4) with the pump cover of the circulation pump (1) and the diffuser insert (18) then form a structural unit (Fig. 3). It's separate between these parts circular pump housing (3) arranged by sealing rings (15) held liquid-tight.

Außen am Pumpengehäuse (3) sind Sicherheitseinrichtungen, wie Thermoschalter (20), Druckschalter, Trübungssensoren oder dergl. vorzugsweise in Prägungen des Pumpengehäuses (3) und/oder des Pumpen-Gehäusedeckels (8) oder in Prägungen im Metallteil (21) angeordnet.On the outside of the pump housing (3) there are safety devices, such as thermal switches (20), Pressure switches, turbidity sensors or the like. Preferably in embossments of the pump housing (3) and / or the pump housing cover (8) or in embossments in the metal part (21) arranged.

Die Rotationssymmetrie (Kreisform) der Pumpenkammer (11) begünstigt den einfachen modularen Aufbau der Pumpe; insbesondere als vormontierte, separat prüfbare Einheit. Bei Bedarf lassen sich auch mehrere Heizkörper mit unterschiedlichen Heizleistungen in das Pumpengehäuse (3) im Druckraum (14) integrieren.The rotational symmetry (circular shape) of the pump chamber (11) favors the simple one modular construction of the pump; especially as a pre-assembled, separately testable unit. at You can also add several radiators with different heating capacities to the demand Integrate the pump housing (3) in the pressure chamber (14).

Claims (19)

Pumpe, insbesondere Kreiselpumpe als Umwälzpumpe (1) für wasserführende Haushaltgeräte, wie Geschirrspülmaschinen oder Waschmaschinen, welche mit einer elektrischen Heizungseinrichtung (2) innerhalb des Pumpengehäuses (3) zur Spülwassererwärmung ausgebildet ist, und bei welcher das Pumpengehäuse (3) mit Ansaugstutzen (4) und Druckstutzen (5, 5') und mit einem im Gehäuse umlaufenden radial verdichtenden Laufrad (6) für den Transport der Spülflüssigkeit versehen ist,
dadurch gekennzeichnet, dass das Pumpengehäuse (3) der Umwälzpumpe (1) mit einer das Laufrad (6) rotationssymmetrisch umgebenden Pumpenkammer (11) ausgebildet ist, welche in einen das Laufrad (6) aufnehmenden strömungsintensiven Laufradraum (12), einen dem Laufradraum (12) nachgeschalteten Diffusorraum (13), in dem ein Teil der Strömungsgeschwindigkeit in Druck umgewandelt wird, und in einen diesem Raum nachgeordneten strömungsberuhigten Druckraum (14) geteilt ist, von welchem ein oder mehrere Druckstutzen (5, 5') abzweigen und in welchem sich die Heizungseinrichtung (2) befindet.Pump, in particular a centrifugal pump as a circulating pump (1) for water-bearing domestic appliances, such as dishwashers or washing machines, which is designed with an electrical heating device (2) inside the pump housing (3) for heating the rinsing water, and in which the pump housing (3) with suction nozzle (4) and pressure nozzle (5, 5 ') and is provided with a radially compressing impeller (6) encircling the housing for transporting the flushing liquid
characterized in that the pump housing (3) of the circulating pump (1) is formed with a pump chamber (11) which surrounds the impeller (6) in a rotationally symmetrical manner and which in a flow-intensive impeller chamber (12) accommodating the impeller (6), one the impeller chamber (12 ) downstream diffuser chamber (13), in which a part of the flow velocity is converted into pressure, and is divided into a downstream flow-reduced pressure chamber (14), from which one or more pressure ports (5, 5 ') branch off and in which the Heating device (2) is located. Umwälzpumpe nach Anspruch 1,
dadurch gekennzeichnet, dass der Diffusorraum (13) als Ringdiffusor ausgebildet ist.Circulation pump according to claim 1,
characterized in that the diffuser space (13) is designed as a ring diffuser. Umwälzpumpe nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet, dass der Diffusorraum (13) durch eine gehäusefeste rotationssymmetrische Stegwand (16) gebildet wird, welche in Strömungsrichtung der Spülflüssigkeit gesehen konzentrisch zum Laufrad (6) und vor diesem radial zum Laufradumfang ausgerichtet ist.Circulation pump according to claims 1 and 2,
characterized in that the diffuser space (13) is formed by a rotationally symmetrical web wall (16) which is fixed to the housing and which, viewed in the direction of flow of the rinsing liquid, is oriented concentrically to the impeller (6) and in front of it radially to the impeller circumference. Umwälzpumpe nach Anspruch 3,
dadurch gekennzeichnet, dass die Stegwand (16) ringscheibenförmig ausgebildet ist.Circulation pump according to claim 3,
characterized in that the web wall (16) is designed in the form of an annular disk. Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Stegwand (16) an einem zumindest annähernd zylindrischen und achsgleich zum Laufrad (6) im Pumpengehäuse (3) angeordneten Einsatz (18) ausgebildet ist, welcher den strömungsberuhigten Druckraum (14) begrenzt. Circulation pump according to one or more of claims 1 to 4,
characterized in that the web wall (16) is formed on an at least approximately cylindrical insert (18) arranged in the pump housing (3) and axially coaxial with the impeller (6), which limits the flow-reduced pressure chamber (14). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass der Einsatz (18) vorzugsweise mit dem Ansaugstutzen (4) am Pumpengehäuse (3) ein Bauteil bildet.Circulation pump according to one or more of claims 1 to 5,
characterized in that the insert (18) preferably forms a component with the suction nozzle (4) on the pump housing (3). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass das die Druckstutzen (5, 5') tragende rotationssymmetrische Pumpengehäuse (3) pumpenansaugseitig mit einem Gehäusedeckel verschlossen ist, welcher den Ansaugstutzen (4) zentrisch umgibt.Circulation pump according to one or more of claims 1 to 6,
characterized in that the rotationally symmetrical pump housing (3) carrying the pressure ports (5, 5 ') is closed on the pump suction side with a housing cover which centrally surrounds the suction port (4). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass der Gehäusedeckel mit dem Ansaugstutzen (4) und/oder dem Einsatz (18) für den Ringdiffusor und Druckraum (14) einteilig ausgebildet ist.Circulation pump according to one or more of claims 1 to 7,
characterized in that the housing cover with the intake (4) and / or the insert (18) for the ring diffuser and pressure chamber (14) is formed in one piece. Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass der Gehäusedeckel und/oder das den Laufradraum (12), Diffusorraum (13) und Druckraum (14) bildende Pumpengehäuse (3) aus Metall oder Kunststoff besteht.Circulation pump according to one or more of claims 1 to 8,
characterized in that the housing cover and / or the pump housing (3) forming the impeller chamber (12), diffuser chamber (13) and pressure chamber (14) consists of metal or plastic. Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass das die Druckstutzen (5, 5') tragende rotationssymmetrische Pumpengehäuse (3) lösbar oder fest mit dem Lagerschild für das Laufrad (6) verbunden ist.Circulation pump according to one or more of claims 1 to 9,
characterized in that the rotationally symmetrical pump housing (3) carrying the pressure ports (5, 5 ') is detachably or permanently connected to the bearing plate for the impeller (6). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass das Pumpengehäuse (3) einteilig mit dem Lagerschild vorzugsweise als Kunststoffspritzteil ausgebildet ist.Circulation pump according to one or more of claims 1 to 10,
characterized in that the pump housing (3) is formed in one piece with the end shield, preferably as a plastic injection molded part. Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 11,
dadurch gekennzeichnet, dass das Pumpengehäuse (3) als Metallteil (21) mit integrierten Rohrheizkörpern (7) der Heizungseinrichtung (2) ausgebildet ist.Circulation pump according to one or more of claims 1 to 11,
characterized in that the pump housing (3) is designed as a metal part (21) with integrated tubular heating elements (7) of the heating device (2). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 12,
dadurch gekennzeichnet, dass die Heizungseinrichtung (2) im strömungsberuhigten Druckraum (14) als rotationssymmetrisches ringförmiges Heizmodul (Rohrheizkörper (7)) ausgebildet ist. Circulation pump according to one or more of claims 1 to 12,
characterized in that the heating device (2) in the flow-reduced pressure chamber (14) is designed as a rotationally symmetrical annular heating module (tubular heater (7)). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 13,
dadurch gekennzeichnet, dass die Heizungseinrichtung (2) im Pumpengehäuse (3) am Pumpen-Gehäusedeckel (8) der Umwälzpumpe (1) lösbar befestigt ist.Circulation pump according to one or more of claims 1 to 13,
characterized in that the heating device (2) in the pump housing (3) on the pump housing cover (8) of the circulation pump (1) is releasably attached. Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 14,
dadurch gekennzeichnet, dass die Heizungseinrichtung (2) im Pumpengehäuse (3) am Einsatz (18) montiert ist.Circulation pump according to one or more of claims 1 to 14,
characterized in that the heating device (2) is mounted in the pump housing (3) on the insert (18). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 15,
dadurch gekennzeichnet, dass der Rohrheizkörper (7) der Heizungseinrichtung (2) als Spirale oder umlaufend ringförmig vorzugsweise in Art einer gewickelte Zylinderspule ein- oder mehrfach gewunden ist.Circulation pump according to one or more of claims 1 to 15,
characterized in that the tubular heating element (7) of the heating device (2) is wound one or more times as a spiral or circumferentially in an annular manner, preferably in the manner of a wound cylindrical coil. Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 16,
dadurch gekennzeichnet, dass die Heizungseinrichtung (2) als separat montierbarer Teil des Pumpengehäuses (3) ausgebildet ist.Circulation pump according to one or more of claims 1 to 16,
characterized in that the heating device (2) is designed as a separately mountable part of the pump housing (3). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 17,
dadurch gekennzeichnet, dass Sicherheitseinrichtungen, wie Thermoschalter (20), Druckschalter, Trübungssensoren oder dergl. außen am Pumpengehäuse (3) vorzugsweise in Prägungen des Pumpengehäuses (3) und/oder des Gehäusedeckels (8) angeordnet sind.Circulation pump according to one or more of claims 1 to 17,
characterized in that safety devices such as thermal switches (20), pressure switches, turbidity sensors or the like are arranged on the outside of the pump housing (3), preferably in embossments of the pump housing (3) and / or the housing cover (8). Umwälzpumpe nach einem oder mehreren der Ansprüche 1 bis 18,
dadurch gekennzeichnet, dass die Heizungseinrichtung (2) mit Abstand zu den Wandungen des Pumpengehäuses (3) an der Umwälzpumpe (1) montiert ist.Circulation pump according to one or more of claims 1 to 18,
characterized in that the heating device (2) is mounted at a distance from the walls of the pump housing (3) on the circulating pump (1).
EP02005593A 2001-04-04 2002-03-12 Pump, in particular centrifugal circulating pump for household appliances using water Expired - Lifetime EP1247993B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10116671A DE10116671B4 (en) 2001-04-04 2001-04-04 Circulation pump with heating device
DE10116671 2001-04-04

Publications (3)

Publication Number Publication Date
EP1247993A2 true EP1247993A2 (en) 2002-10-09
EP1247993A3 EP1247993A3 (en) 2003-01-15
EP1247993B1 EP1247993B1 (en) 2009-03-04

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Family Applications (1)

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EP02005593A Expired - Lifetime EP1247993B1 (en) 2001-04-04 2002-03-12 Pump, in particular centrifugal circulating pump for household appliances using water

Country Status (4)

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EP (1) EP1247993B1 (en)
AT (1) ATE424511T1 (en)
DE (2) DE10116671B4 (en)
ES (1) ES2320417T3 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1650440A1 (en) * 2004-10-20 2006-04-26 Pedrollo S.p.a. Pump casing for centrifugal pump and method for producing said casing
GB2427437A (en) * 2005-06-23 2006-12-27 Otter Controls Ltd Pump incorporating an electric heating element
EP1762169A2 (en) * 2005-09-09 2007-03-14 BSH Bosch und Siemens Hausgeräte GmbH Household apparatus with water circulation with a pump.
EP1870508A2 (en) * 2006-06-21 2007-12-26 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Pump, in particular for household machine using water.
WO2013131847A1 (en) * 2012-03-08 2013-09-12 BSH Bosch und Siemens Hausgeräte GmbH Water-bearing domestic appliance having at least a motor-driven pump and a heating device
EP2677178A3 (en) * 2012-06-22 2015-04-22 E.G.O. Elektro-Gerätebau GmbH Pump
CN104706292A (en) * 2014-01-02 2015-06-17 美的集团股份有限公司 Top-spraying device of dish-washing machine
EP2937571A1 (en) * 2014-04-22 2015-10-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Pump
CN105020180A (en) * 2014-04-24 2015-11-04 芜湖美的洗涤电器制造有限公司 Heating pump for dish-washing machine and dish-washing machine
US20170027405A1 (en) * 2014-04-24 2017-02-02 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Heat pump and dishwasher comprising the same
WO2017101086A1 (en) * 2015-12-17 2017-06-22 广东威灵电机制造有限公司 Centrifugal pump
US10302098B2 (en) 2014-08-07 2019-05-28 Johnson Electric International AG Heating pump
US10398283B2 (en) 2013-03-01 2019-09-03 Whirlpool Corporation Dishwasher with sprayer
CN111706520A (en) * 2020-06-19 2020-09-25 佛山市威灵洗涤电机制造有限公司 Shell assembly of electric pump, electric pump and dish washing machine
EP4071361A4 (en) * 2020-05-13 2023-01-25 Foshan Welling Washer Motor Manufacturing Co., Ltd. Heating pump and dish washing machine

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004048362A1 (en) * 2004-03-05 2005-09-22 Aweco Appliance Systems Gmbh & Co. Kg Rotary pump for domestic appliances has an integrated heating element having improved efficiency due to greater contact with the circulated water
CN102748329B (en) 2011-04-15 2017-02-22 德昌电机(深圳)有限公司 Heat pump
US9693672B2 (en) 2011-09-22 2017-07-04 Whirlpool Corporation Dishwasher with sprayer
US9297553B2 (en) 2013-07-01 2016-03-29 Whirlpool Corporation Pump assembly
US9713413B2 (en) 2013-07-01 2017-07-25 Whirlpool Corporation Dishwasher for treating dishes
US9532699B2 (en) 2013-07-15 2017-01-03 Whirlpool Corporation Dishwasher with sprayer
DE102014109625A1 (en) * 2014-07-09 2016-01-14 Hanning Elektro-Werke Gmbh & Co. Kg pump assembly
DE102017108349B4 (en) 2016-05-23 2023-03-09 Miele & Cie. Kg Washing machine or dishwasher with a heating device for heating the washing or rinsing liquid
ES2781226T3 (en) * 2016-10-21 2020-08-31 Miele & Cie Circulation pump for a dishwasher machine
CN107514392B (en) * 2017-08-31 2019-04-05 广东威灵电机制造有限公司 Fluid pumping apparatus and household electrical appliance

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US4594500A (en) * 1982-02-10 1986-06-10 Wright Spa Pools Ltd Electrically heated pump for spas and swimming pools
DE3640252A1 (en) * 1986-11-25 1988-06-16 Marcant Pumpen Gmbh Pump with in-built electric heating
US5701388A (en) * 1994-12-22 1997-12-23 Kohler Co. Combined heater and pump
DE19852569A1 (en) * 1998-11-13 2000-05-18 Miele & Cie Circulation pump, in particular for water-bearing household appliances
DE19858137A1 (en) * 1998-12-16 2000-06-21 Bsh Bosch Siemens Hausgeraete Heater for heating the washing liquid in a dishwasher
DE19903951A1 (en) * 1999-02-02 2000-08-03 Eichenauer Gmbh & Co Kg F Washing machine pump has heater and heat distributor plate for liquid heating

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US3826589A (en) * 1972-06-22 1974-07-30 Sta Rite Industries Plastic pump construction

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US4594500A (en) * 1982-02-10 1986-06-10 Wright Spa Pools Ltd Electrically heated pump for spas and swimming pools
DE3640252A1 (en) * 1986-11-25 1988-06-16 Marcant Pumpen Gmbh Pump with in-built electric heating
US5701388A (en) * 1994-12-22 1997-12-23 Kohler Co. Combined heater and pump
DE19852569A1 (en) * 1998-11-13 2000-05-18 Miele & Cie Circulation pump, in particular for water-bearing household appliances
DE19858137A1 (en) * 1998-12-16 2000-06-21 Bsh Bosch Siemens Hausgeraete Heater for heating the washing liquid in a dishwasher
DE19903951A1 (en) * 1999-02-02 2000-08-03 Eichenauer Gmbh & Co Kg F Washing machine pump has heater and heat distributor plate for liquid heating

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1650440A1 (en) * 2004-10-20 2006-04-26 Pedrollo S.p.a. Pump casing for centrifugal pump and method for producing said casing
GB2427437A (en) * 2005-06-23 2006-12-27 Otter Controls Ltd Pump incorporating an electric heating element
GB2427437B (en) * 2005-06-23 2010-11-10 Otter Controls Ltd Combined heater pump apparatus
EP1762169A2 (en) * 2005-09-09 2007-03-14 BSH Bosch und Siemens Hausgeräte GmbH Household apparatus with water circulation with a pump.
EP1762169A3 (en) * 2005-09-09 2008-08-06 BSH Bosch und Siemens Hausgeräte GmbH Household apparatus with water circulation with a pump
EP1870508A2 (en) * 2006-06-21 2007-12-26 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Pump, in particular for household machine using water.
EP1870508A3 (en) * 2006-06-21 2008-05-28 AWECO APPLIANCE SYSTEMS GmbH & Co. KG Pump, in particular for household machine using water.
US7965928B2 (en) 2006-06-21 2011-06-21 Aweco Appliance Systems Gmbh & Co. Kg Pump, in particular for water-bearing domestic appliances
CN101096953B (en) * 2006-06-21 2012-09-26 阿维可设备系统有限及两合公司 Pump, in particular for water-bearing domestic appliances
WO2013131847A1 (en) * 2012-03-08 2013-09-12 BSH Bosch und Siemens Hausgeräte GmbH Water-bearing domestic appliance having at least a motor-driven pump and a heating device
US9470242B2 (en) 2012-06-22 2016-10-18 E.G.O. Elektro-Geraetebau Gmbh Pump
EP2677178A3 (en) * 2012-06-22 2015-04-22 E.G.O. Elektro-Gerätebau GmbH Pump
US10398283B2 (en) 2013-03-01 2019-09-03 Whirlpool Corporation Dishwasher with sprayer
CN104706292A (en) * 2014-01-02 2015-06-17 美的集团股份有限公司 Top-spraying device of dish-washing machine
CN104706292B (en) * 2014-01-02 2019-07-05 美的集团股份有限公司 The top spray device of dish-washing machine
EP2937571A1 (en) * 2014-04-22 2015-10-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Pump
CN108518359A (en) * 2014-04-24 2018-09-11 佛山市顺德区美的洗涤电器制造有限公司 Heat pump and dish-washing machine for dish-washing machine
EP3134653A4 (en) * 2014-04-24 2017-12-13 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Heat pump and diswasher comprising the same
CN108518358A (en) * 2014-04-24 2018-09-11 佛山市顺德区美的洗涤电器制造有限公司 Heat pump and dish-washing machine for dish-washing machine
US20170027405A1 (en) * 2014-04-24 2017-02-02 Foshan Shunde Midea Washing Appliances Mfg. Co., Ltd. Heat pump and dishwasher comprising the same
CN105020180A (en) * 2014-04-24 2015-11-04 芜湖美的洗涤电器制造有限公司 Heating pump for dish-washing machine and dish-washing machine
US10602905B2 (en) 2014-04-24 2020-03-31 Foshan Shunde Midea Washing Appliances Mfg. Co. Lt Heat pump and dishwasher comprising the same
EP4033107A1 (en) * 2014-04-24 2022-07-27 Foshan Shunde Midea Washing Appliances Manufacturing Co., Ltd. Heat pump and dishwasher comprising the same
US10302098B2 (en) 2014-08-07 2019-05-28 Johnson Electric International AG Heating pump
WO2017101086A1 (en) * 2015-12-17 2017-06-22 广东威灵电机制造有限公司 Centrifugal pump
EP4071361A4 (en) * 2020-05-13 2023-01-25 Foshan Welling Washer Motor Manufacturing Co., Ltd. Heating pump and dish washing machine
CN111706520A (en) * 2020-06-19 2020-09-25 佛山市威灵洗涤电机制造有限公司 Shell assembly of electric pump, electric pump and dish washing machine
CN111706520B (en) * 2020-06-19 2021-08-27 佛山市威灵洗涤电机制造有限公司 Shell assembly of electric pump, electric pump and dish washing machine

Also Published As

Publication number Publication date
ATE424511T1 (en) 2009-03-15
DE10116671A1 (en) 2002-10-17
ES2320417T3 (en) 2009-05-22
EP1247993A3 (en) 2003-01-15
EP1247993B1 (en) 2009-03-04
DE50213324D1 (en) 2009-04-16
DE10116671B4 (en) 2006-04-27

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