EP1866546A1 - Wet running pump - Google Patents

Wet running pump

Info

Publication number
EP1866546A1
EP1866546A1 EP06725475A EP06725475A EP1866546A1 EP 1866546 A1 EP1866546 A1 EP 1866546A1 EP 06725475 A EP06725475 A EP 06725475A EP 06725475 A EP06725475 A EP 06725475A EP 1866546 A1 EP1866546 A1 EP 1866546A1
Authority
EP
European Patent Office
Prior art keywords
wet
circuit board
pump
stator
printed circuit
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
EP06725475A
Other languages
German (de)
French (fr)
Other versions
EP1866546B1 (en
Inventor
Waldemar Stephan
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.)
Pierburg GmbH
Original Assignee
Pierburg 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
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP1866546A1 publication Critical patent/EP1866546A1/en
Application granted granted Critical
Publication of EP1866546B1 publication Critical patent/EP1866546B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • 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

Definitions

  • the invention relates to a wet-running pump, in particular a motor vehicle pump, which is used for example as a cooling water pump for motor vehicles.
  • An example from EP 02 017 197 known wet-running pump is electrically driven and has a rotor and a stator.
  • the rotor is connected to an impeller so that the stator spaced from the rotor can drive the impeller by means of the rotor.
  • a split pot is arranged, which ensures that the rotor is flowed around and cooled by the fluid to be delivered and at the same time the stator does not come into contact with the fluid to be delivered. Through the split pot is achieved that a short circuit of the stator windings is avoided.
  • the invention has for its object to provide a wet-running pump, in which the structure is simplified.
  • the object is achieved by a wet-running pump with the features of claim 1 and the features of claim 3 and by using a printed circuit board having the features of claim 12.
  • the wet-running pump according to the invention which may in particular be a pump for a motor vehicle, has a wet area and a dry area.
  • the wet area is flowed through by a fluid, which conveys the wet-running pump, in order to cool the wet-running pump or individual components of the wet-running pump.
  • a rotor connected to a pump wheel is provided in the wet area.
  • the drying area is separated from the wet area, so that in the dry area electrical components, in particular a stator, which cooperates with the rotor, can be arranged.
  • a printed circuit board is provided which at least partially delimits the wet area from the dry area.
  • the printed circuit board has electrical lines for connection to a stator and / or to form the stator.
  • the circuit board may also contain the controls. This makes it possible for the circuit board to replace an otherwise required containment shell, or at least forms part of the containment shell, wherein the containment shell may also be degenerate to a disc-shaped or plate-shaped delimitation element.
  • the printed circuit board may additionally be coated in order to achieve a better resistance to the medium.
  • the wet-running pump according to the invention which is in particular a cooling water pump for a motor vehicle, has a rotor connected to a pump wheel, which cooperates with a stator. Furthermore, a printed circuit board is provided whose electrical lines at least partially form the stator.
  • the rotor connected to the impeller is disposed in a wet area and the stator in a dry area, wherein the wet cover is separated from the drying area by a limiter, for example a containment shell.
  • the printed circuit board is preferably connected to the Begrenzungselemcnt, that is glued, for example, on the drying area facing side of the limiting element. Due to the fact that the printed circuit board forms all or part of the stator, individual stators can be saved or made smaller, which simplifies the construction and assembly of the wet-running pump.
  • the delimiting element or the printed circuit board is particularly preferably in contact with the conveyed fluid of the wet-running pump via the surface of the delimiting element or the printed circuit board pointing toward the wet area, so that the printed circuit board is cooled by the conveyed fluid
  • the electrical lines have a low thermal resistance, so that the heat generated in the stator can be dissipated via the cooled electrical lines., A heat transfer alone across a heat-insulating air gap is thereby avoided so that the cooling of the stator is improved.
  • the circuit board to stator windings of the stator, wherein the stator windings of the stator are formed in particular by the electrical lines of the circuit board.
  • the rotor and the stator are arranged axially relative to one another with respect to an axis of rotation about which the impeller and the rotor rotate.
  • the printed circuit board is preferably constructed in multiple layers.
  • the at least one additional layer for forming the multilayer printed circuit board in particular also has stator windings. This makes it possible to form a multilayer printed circuit board with a plurality of stator windings arranged one behind the other.
  • the stator is the Wet runner pump completely integrated into the trimming element or in the plate.
  • the usually provided in a NIONAL herein is degenerate to a circuit board.
  • a printed circuit board as Begrenzungselemcnf, in particular as a gap pot in a wet-running pump, represents an independent invention
  • the circuit board is an electrical circuit board with printed electrical lines, wherein the circuit board, moreover, preferably consists of a Halblcitcrmaterial or plastic.
  • the printed circuit board may be a substrate, on which electrical lines are mounted, so that the printed circuit board is essentially a circuit carrier.
  • the printed circuit board can, for example, at least partially consist of ceramic or IMS (insulted metal substrates). It is thus possible to use the delimiter, i. the split pot, as well as the stator of the wet runner pump including the associated electrical lines in a mass production accessible method particularly easy to manufacture.
  • the installation effort for the wet-running pump according to the invention is reduced by the achieved component reduction.
  • it is the circuit board that separates the rotor and the stator moisture-tight from each other.
  • the circuit board can thus serve not only to power the stator and to cool the stator, but also to support the rotation of the impeller.
  • the opening for receiving the Drehweile is especially at the pump wheel technological site, d h. closed to the side that is not flown by the pumped fluid, so that no fluid can escape.
  • FIG. 1 is a schematic sectional view of a wet runner pump according to the invention
  • FIG. 2 is a schematic plan view of the wet-running pump in the direction of arrow II in FIG. 1 with the pump end cap removed;
  • FIG. 3 shows a schematic sectional view of a printed circuit board in a first embodiment
  • Fig. 5 is a schematic sectional view of the circuit board in a third embodiment along the line V - V of Fig. 2 and
  • Fig. 6 is a schematic sectional view of the printed circuit board in a fourth embodiment.
  • a wet-running pump 10 has a pump housing 12 with an inlet 14 and an outlet 16. Between the inlet 14 and the outlet 16, an impeller 18 is arranged. The impeller 18 is flowed axially by a fluid to be conveyed to a rotational axis 20 of the pump impeller 18 in the direction of an arrow 22 via the inlet 14. The fluid is conveyed via the outlet 16 radially in the direction of an arrow 24.
  • the impeller 18 consists of a plastic, are embedded in the permanent magnet 26 as a rotor. For reasons of clarity, the permanent magnets 26 of the rotor are enlarged and not completely shown.
  • the impeller 18 may also consist of magnetic plastic.
  • the impeller 18 is arranged in a wet region 28 into which a part of the fluid to be conveyed can flow.
  • the wet area 28 is delimited on the one hand by the pump housing 12 and on the other hand by a boundary surface 30 of a delimiting element 32 facing the impeller 18.
  • the limiting element 32 consists solely of a printed circuit board 34, which is connected by means of a screw connection 36 via a seal 38 with the Pumpengephasec 12.
  • the circuit board 34 has a through hole 40.
  • the printed circuit board 34 has stator windings 42, which are arranged spaced apart from the permanent magnets 26 of the rotor in the axial direction.
  • the pump housing 12 is further connected to a pump cover 44, so that a drying area 46 is formed between the boundary surface 30 facing the impeller and the pump cover 44.
  • the printed circuit board 34 or Begrenzungselcment 32 at the same time the pump cover 44, so that in addition to the circuit board 34 and the limiting element 32, a further pump cover 44 is not required in principle.
  • a further pump cover 44 for safety reasons, for example, to prevent damage or contamination of the printed circuit board 34 and the electrical components of the circuit board 34, be advantageous.
  • the circuit board 34 has a socket 48, which receives a Drehwclle 50 of the impeller 18 and supports.
  • the impeller 18 may optionally in addition to the sleeve 48th be trimmed or stored on the pump housing 12 opposite side.
  • 44 further stator windings are provided on the outside of the sleeve 48 and / or on the inside of the pump cover.
  • the pump cover 44 and / or the pump housing 12 may also consist of a magnetically active material to improve the magnetic circuit.
  • the printed circuit board 34 preferably has a connection region 52 arranged outside the pump housing 1.2, in which connection means, for example a connection plug 54, are arranged for connection to a power supply.
  • connection means for example a connection plug 54
  • the connector 54 may also be disposed within the pump housing 12 and within the pump cover 44, in which case the electrical contacts of the connector 54 may sit directly on the circuit board 34 and the pump housing 12 or the pump cover 44 may form the housing of the connector 44.
  • the circuit board 34 may further comprise electrical components 56, by means of which the wet-running pump 10 can be controlled and regulated.
  • the circuit board 34 may have an opening 58 for receiving the rotary shaft 50 (FIG. 2).
  • the bush 48 or another bearing element is additionally arranged in the opening 58.
  • the printed circuit board 34 can be designed in a manner comparable to a conventional printed circuit board with printed lines (FIG. 3). As a result, the stator windings 42 formed by the electric lines are slightly protruding.
  • stator windings 42 can also be embedded in the material of the printed circuit board 34 (FIG. 4).
  • stator windings 42 are provided on both sides of the base layer 60 of the printed circuit board (FIG. 5).
  • the stator windings 42 facing the wet region 28 are covered with the aid of a protective foil 66.
  • the wet-area boundary surface 30 defining the boundary between the wet area 28 and the dry area 46 is formed by the protective film 66.
  • FIG. 6 Another form ( Figure 6) is a printed circuit board 34 of IMS (insulated meta! Substrates).
  • IMS is an Al plate 68 as a substrate to which the layers 60, 62 constituting the circuit board 34 are applied. These layers 60, 62 are preferably made of similar or the same materials as a commercially available printed circuit board.

Abstract

The pump includes a wet area (28) through which fluid flows, and a dry area (46) in which electrical components are arranged. A PCB (34) partially demarcates the wet area from the dry area. Stators (42) are connected to the PCB.

Description

Nassläuferpumpe Wet rotor
Die Erfindung betrifft eine Nassläuferpumpe, insbesondere eine Kraftfahrzeug pumpe, die beispielsweise als Kühlwasserpumpe für Kraftfahrzeuge verwendet wird .The invention relates to a wet-running pump, in particular a motor vehicle pump, which is used for example as a cooling water pump for motor vehicles.
Eine beispielsweise aus EP 02 017 197 bekannte Nassläuferpumpe wird elektrisch angetrieben und weist einen Rotor und einen Stator auf. Der Rotor ist mit einem Pumpenrad verbunden, so dass der zu dem Rotor beabstandete angeordnete Stator mit Hilfe des Rotors das Pumpenrad antreiben kann. Zwischen dem Rotor und dem Stator ist ein Spalttopf angeordnet, wodurch sicher gestellt wird, dass der Rotor von dem zu fördernden Fluid umströmt und gekühft wird und gleichzeitig der Stator nicht mit dem zu fördernden Fluid in Kontakt kommt. Durch den Spalttopf wird erreicht, dass ein Kurzschluss der Statorwicklungen vermieden wird.An example from EP 02 017 197 known wet-running pump is electrically driven and has a rotor and a stator. The rotor is connected to an impeller so that the stator spaced from the rotor can drive the impeller by means of the rotor. Between the rotor and the stator, a split pot is arranged, which ensures that the rotor is flowed around and cooled by the fluid to be delivered and at the same time the stator does not come into contact with the fluid to be delivered. Through the split pot is achieved that a short circuit of the stator windings is avoided.
Nachteilig bei einer derartigen Nassläuferpumpe ist, dass der Aufbau kompliziert und die Montage entsprechend aufwändig ist.The disadvantage of such a wet-running pump is that the structure is complicated and the assembly is correspondingly expensive.
Der Erfindung liegt die Aufgabe zugrunde, eine Nassläuferpumpe zu schaffen, bei welcher der Aufbau vereinfacht ist.The invention has for its object to provide a wet-running pump, in which the structure is simplified.
Die Lösung der Aufgabe erfolgt erfindungsgemäß durch eine Nassläuferpumpe mit den Merkmalen des Anspruchs 1 und den Merkmalen des Anspruchs 3 sowie durch eine Verwendung einer Leiterplatte mit den Merkmalen des Anspruchs 12.The object is achieved by a wet-running pump with the features of claim 1 and the features of claim 3 and by using a printed circuit board having the features of claim 12.
Die erfindungsgemäße Nassläuferpumpe, bei der es sich insbesondere um eine Pumpe für ein Kraftfahrzeug handeln kann, weist einen Nassbereich und einen Trockenbereich auf. Der Nassbereich wird von einem Fiuid, das die Nassläuferpumpe fördert, durchströmt, um die Nassläuferpumpe bzw. einzelne Komponenten der Nassläuferpumpe zu kühlen. Insbesondere ist in dem Nassbereich ein mit einem Pumpenrad verbundener Rotor vorgesehen. Der Trockenbereich ist von dem Nassbereich getrennt, damit in dem Trockenbereich elektrische Komponenten, insbesondere ein Stator, der mit dem Rotor zusammenwirkt, angeordnet werden können. Erfindungsgemäß ist eine Leiterplatte vorgesehen, die zumindest teilweise den Nassbereich von dem Trockenbercich abgrenzt. Die Leiterplatte weist zur Verbindung mit einem Stator und/ oder zur Ausbildung des Stators elektrische Leitungen auf. Die Leiterplatte kann auch die Steuerelemente enthalten. Dadurch ist es möglich, dass die Leiterplatte einen ansonsten erforderlichen Spalttopf ersetzt, oder zumindest einen Teil des Spalttopfes bildet, wobei der Spalttopf auch zu einem scheibenförmigen bzw. plattenförmigen Begrenzungselement entartet sein kann.. Dadurch, dass die Leiterplatte und der Spalttopf ein gemeinsames Bauteil ausbilden bzw. die Leiterplatte den Spalttopf ersetzt, ist der Aufbau und die Montage der Nassläuferpumpe vereinfacht. Die Leiterplatte kann zusätzlich beschichtet sein, um eine bessere Resistenz gegen das Medium zu erreichen.The wet-running pump according to the invention, which may in particular be a pump for a motor vehicle, has a wet area and a dry area. The wet area is flowed through by a fluid, which conveys the wet-running pump, in order to cool the wet-running pump or individual components of the wet-running pump. In particular, a rotor connected to a pump wheel is provided in the wet area. The drying area is separated from the wet area, so that in the dry area electrical components, in particular a stator, which cooperates with the rotor, can be arranged. According to the invention, a printed circuit board is provided which at least partially delimits the wet area from the dry area. The printed circuit board has electrical lines for connection to a stator and / or to form the stator. The circuit board may also contain the controls. This makes it possible for the circuit board to replace an otherwise required containment shell, or at least forms part of the containment shell, wherein the containment shell may also be degenerate to a disc-shaped or plate-shaped delimitation element. The fact that the circuit board and the containment shell form a common component or the circuit board replaced the containment shell, the construction and installation of the wet-running pump is simplified. The printed circuit board may additionally be coated in order to achieve a better resistance to the medium.
In einer unabhängigen Erfindung weist die erfindungsgemäße Nassläuferpumpe, bei der es sich insbesondere um eine Kühlwasserpumpe für ein Kraftfahrzeug handelt, einen mit einem Pumpenrad verbundenen Rotor auf, der mit einem Stator zusammenwirkt. Ferner ist eine Leiterplatte vorgesehen, deren elektrische Leitungen zumindest teilweise den Stator ausbilden. Vorzugsweise ist der mit dem Pumpenrad verbundene Rotor in einem Nassbereich und der Stator in einem Trockenbereich angeordnet, wobei der Nassbercϊch von dem Trockenbereich durch ein Begrcnzungselemcnt, beispielsweise einen Spalttopf, getrennt ist. In diesem Fall ist die Leiterplatte vorzugsweise mit dem Begrenzungselemcnt verbunden, d. h. beispielsweise auf der zum Trockenbereich weisenden Seite des Begrenzungselementes aufgeklebt. Dadurch, dass die Leiterplatte den Stator ganz oder teilweise ausbildet, können einzelne Statoren eingespart bzw. kleiner ausgeführt werden, wodurch der Aufbau und die Montage der Nassläuferpumpe vereinfacht ist.In an independent invention, the wet-running pump according to the invention, which is in particular a cooling water pump for a motor vehicle, has a rotor connected to a pump wheel, which cooperates with a stator. Furthermore, a printed circuit board is provided whose electrical lines at least partially form the stator. Preferably, the rotor connected to the impeller is disposed in a wet area and the stator in a dry area, wherein the wet cover is separated from the drying area by a limiter, for example a containment shell. In this case, the printed circuit board is preferably connected to the Begrenzungselemcnt, that is glued, for example, on the drying area facing side of the limiting element. Due to the fact that the printed circuit board forms all or part of the stator, individual stators can be saved or made smaller, which simplifies the construction and assembly of the wet-running pump.
Das Begrenzungselement bzw. die Leiterplatte ist besonders bevorzugt über die zum Nassbereich weisende Oberfläche des Begrenzungselements bzw. der Leiterplatte mit dem geförderten Fluid der Nassläuferpumpe in Kontakt, so dass die Leiterplatte durch das geförderte Fluid gekühlt wird.. Da die elektrischen Leitungen der Leiterplatte in der Regel aus einem metallischen Material, beispielsweise Kupfer, bestehen, weisen die elektrischen Leitungen einen geringen Wärmewiderstand auf, so dass die in dem Stator entstehende Wärme über die gekühlten elektrischen Leitungen abgeführt werden kann., Eine Wärmetransport allein über einen wärmeisolierenden Luftspalt hinweg wird dadurch vermieden, so dass die Kühlung des Stators verbessert ist.The delimiting element or the printed circuit board is particularly preferably in contact with the conveyed fluid of the wet-running pump via the surface of the delimiting element or the printed circuit board pointing toward the wet area, so that the printed circuit board is cooled by the conveyed fluid Usually consist of a metallic material, such as copper, the electrical lines have a low thermal resistance, so that the heat generated in the stator can be dissipated via the cooled electrical lines., A heat transfer alone across a heat-insulating air gap is thereby avoided so that the cooling of the stator is improved.
Vorzugsweise weist die Leiterplatte Statorwicklungen des Stators auf, wobei die Statorwicklungen des Stators insbesondere durch die elektrischen Leitungen der Leiterplatte ausgebildet werden. Hierzu sind der Rotor und der Stator bezogen auf eine Drehachse, um die das Pumpenrad und der Rotor rotieren, axial zueinander angeordnet.Preferably, the circuit board to stator windings of the stator, wherein the stator windings of the stator are formed in particular by the electrical lines of the circuit board. For this purpose, the rotor and the stator are arranged axially relative to one another with respect to an axis of rotation about which the impeller and the rotor rotate.
Die Leiterplatte ist vorzugsweise mehrschichtig aufgebaut. Die mindestens eine Zusatzschicht zur Ausbildung der mehrschichtigen Leiterplatte weist insbesondere ebenfalls Statorwicklungen auf. Dadurch ist es möglich, eine mehrschichtige Leiterplatte mit mehreren hintereinander angeordneten Statorwicklungen auszubilden. Vorzugsweise ist der Stator der Nassläuferpumpc vollständig in das Begrcnzungselemcnt bzw in der Leϊtei platte integriert.The printed circuit board is preferably constructed in multiple layers. The at least one additional layer for forming the multilayer printed circuit board in particular also has stator windings. This makes it possible to form a multilayer printed circuit board with a plurality of stator windings arranged one behind the other. Preferably, the stator is the Wet runner pump completely integrated into the trimming element or in the plate.
In einer besonders bevorzugten Ausfuhrungsform ist der bei einer Nassläuferpumpc üblicherweise vorgesehene Spalttopf zu einer Leiterplatte entartet. Die Verwendung einer Leiterplatte als Begrenzungselemcnf, insbesondere als Spalttopf in einer Nassläuferpumpe, stellt eine unabhängige Erfindung darIn a particularly preferred embodiment, the usually provided in a Naßläuferpumpc split pot is degenerate to a circuit board. The use of a printed circuit board as Begrenzungselemcnf, in particular as a gap pot in a wet-running pump, represents an independent invention
Bei der Leiterplatte handelt es sich insbesondere um eine Elektroplatine mit aufgedruckten elektrischen Leitungen, wobei die Leiterplatte im übrigen vorzugsweise aus einem Halblcitcrmaterial oder Kunststoff besteht. Die Leiterplatte kann ein Substrat sein, auf dem elektrische Leitungen angebracht sind, so dass die Leiterplatte im Wesentlichen ein Schaltungsträger ist. Die Leiterplatte kann beispielsweise zumindest teilweise aus Keramik oder IMS (insulted metal Substrate) bestehen. Es ist somit möglich, das Begrenzungsclement, d.h. den Spalttopf, sowie den Stator der Nassläuferpumpe einschließlich der dazugehörigen elektrischen Leitungen in einem der Massenfertigung zugänglichen Verfahren besonders einfach herzustellen. Ferner wird durch die erreichte Bauteilereduktion der Montageaufwand für die erfindungsgemäße Nassläuferpumpe reduziert. Insbesondere ist es die Leiterplatte, die den Rotor und den Stator feuchtigkeitsdicht voneinander trennt.In particular, the circuit board is an electrical circuit board with printed electrical lines, wherein the circuit board, moreover, preferably consists of a Halblcitcrmaterial or plastic. The printed circuit board may be a substrate, on which electrical lines are mounted, so that the printed circuit board is essentially a circuit carrier. The printed circuit board can, for example, at least partially consist of ceramic or IMS (insulted metal substrates). It is thus possible to use the delimiter, i. the split pot, as well as the stator of the wet runner pump including the associated electrical lines in a mass production accessible method particularly easy to manufacture. Furthermore, the installation effort for the wet-running pump according to the invention is reduced by the achieved component reduction. In particular, it is the circuit board that separates the rotor and the stator moisture-tight from each other.
Vorzugsweise weist das Begrcnzungselement und insbesondere die Leiterplatte eine Öffnung zur Aufnahme einer Drehwelle des Pumpenrades auf, Anstelle einer Öffnung kann auch ein Lager für die Drehwelle, beispielsweise durch Kleben, mit der Leiterplatte verbunden sein. Die Leiterplatte kann somit nicht nur zur Stromversorgung des Stators und zur Kühlung des Stators, sondern auch zur Lagerung der Drehwclie des Pumpenrades dienen. Die Öffnung zur Aufnahme der Drehweile ist insbesondere an der vom Pumpenrad wegweisenden Seite, d h. zu der Seite, die nicht vom geförderten Fluid angeströmt wird, verschlossen, so dass kein Fluid austreten kann.Preferably, the Begrznzungselement and in particular the circuit board on an opening for receiving a rotary shaft of the impeller, in place of an opening, a bearing for the rotary shaft, for example by gluing, be connected to the circuit board. The circuit board can thus serve not only to power the stator and to cool the stator, but also to support the rotation of the impeller. The opening for receiving the Drehweile is especially at the pump wheel groundbreaking site, d h. closed to the side that is not flown by the pumped fluid, so that no fluid can escape.
Nachfolgend wird die Erfindung anhand bevorzugter Ausfuhrungsbeispiele unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.The invention will be explained in more detail with reference to preferred exemplary embodiments with reference to the accompanying drawings.
Es zeigen :Show it :
Fig. 1 eine schematische Schnittansicht einer erfindungsgemäßen Nassläuferpumpe,1 is a schematic sectional view of a wet runner pump according to the invention,
Fig. 2 eine schematϊsche Draufsicht der Nassläuferpumpe in Richtung des Pfeils II aus Fig. 1 bei abgenommenen Pumpendcckel,2 is a schematic plan view of the wet-running pump in the direction of arrow II in FIG. 1 with the pump end cap removed;
Fig, 3 eine schematische Schnittansicht einer Leiterplatte in einer ersten Ausfuhrungsform,3 shows a schematic sectional view of a printed circuit board in a first embodiment,
Fig. 4 eine schematischc Schnittansicht der Leiterplatte in einer zweiten Ausführungsform,4 is a schematic sectional view of the printed circuit board in a second embodiment,
Fig. 5 eine schematischc Schnittansicht der Leiterplatte in einer dritten Ausfuhrungsform entlang der Linie V - V aus Fig. 2 undFig. 5 is a schematic sectional view of the circuit board in a third embodiment along the line V - V of Fig. 2 and
Fig. 6 eine schematische Schnittansicht der Leiterplatte in einer vierten Ausfuhrungsform.Fig. 6 is a schematic sectional view of the printed circuit board in a fourth embodiment.
Eine Nassläuferpumpe 10 weist ein Pumpengehäuse 12 mit einem Einlass 14 und einem Auslass 16 auf. Zwischen dem Einlass 14 und dem Auslass 16 ist ein Pumpenrad 18 angeordnet. Das Pumpenrad 18 wird von einem zu fördernden Fluid zu einer Drehachse 20 des Pumpenrades 18 in Richtung eines Pfeils 22 über den Einlass 14 axial angeströmt. Das Fluid wird über den Auslass 16 radial in Richtung eines Pfeils 24 gefördert. Das Pumpenrad 18 besteht aus einem Kunststoff, in den Dauermagneten 26 als Rotor eingelagert sind. Aus Gründen der Übersichtlichkeit sind die Dauermagneten 26 des Rotors vergrößert und nicht vollständig dargestellt. Das Pumpenrad 18 kann auch aus magnetischem Kunststoff bestehen.A wet-running pump 10 has a pump housing 12 with an inlet 14 and an outlet 16. Between the inlet 14 and the outlet 16, an impeller 18 is arranged. The impeller 18 is flowed axially by a fluid to be conveyed to a rotational axis 20 of the pump impeller 18 in the direction of an arrow 22 via the inlet 14. The fluid is conveyed via the outlet 16 radially in the direction of an arrow 24. The impeller 18 consists of a plastic, are embedded in the permanent magnet 26 as a rotor. For reasons of clarity, the permanent magnets 26 of the rotor are enlarged and not completely shown. The impeller 18 may also consist of magnetic plastic.
Das Pumpenrad 18 ist in einem Nassbereich 28 angeordnet, in den ein Teil des zu fördernden Fluids strömen kann. Der Nassbereich 28 wird einerseits von dem Pumpengehäusc 12 und andererseits von einer zum Pumpenrad 18 weisenden Begrenzungsfläche 30 eines Begrenzungselemcnts 32 begrenzt. Im dargestellten Ausführungsbeispiel besteht das Begrenzungselement 32 allein aus einer Leiterplatte 34, die mit Hilfe einer Schraubenverbindung 36 über eine Dichtung 38 mit dem Pumpengehäusc 12 verbunden ist. Hierzu weist die Leiterplatte 34 eine Durchgangsbohrung 40 auf.The impeller 18 is arranged in a wet region 28 into which a part of the fluid to be conveyed can flow. The wet area 28 is delimited on the one hand by the pump housing 12 and on the other hand by a boundary surface 30 of a delimiting element 32 facing the impeller 18. In the illustrated embodiment, the limiting element 32 consists solely of a printed circuit board 34, which is connected by means of a screw connection 36 via a seal 38 with the Pumpengehäusc 12. For this purpose, the circuit board 34 has a through hole 40.
Die Leiterplatte 34 weist Statorwicklungen 42 auf, die zu den Dauermagneten 26 des Rotors in axialer Richtung beabstandet angeordnet sind. Zum Schutz vor äußeren Einflüssen ist das Pumpengehäuse 12 ferner mit einem Pumpendeckel 44 verbunden, so dass zwischen der zum Pumpenrad weisenden Begrenzungsfläche 30 und dem Pumpendeckel 44 ein Trockenbereich 46 ausgebildet ist. Insbesondere wenn sämtliche Statorwicklungen 42 in einer gegebenenfalls mehrschichtigen Leiterplatte 34 angeordnet sind, ist die Leiterplatte 34 bzw. das Begrenzungselcment 32 gleichzeitig der Pumpendeckel 44, so dass zusätzlich zu der Leiterplatte 34 bzw. dem Begrenzungselement 32 ein weiterer Pumpendeckel 44 prinzipiell nicht erforderlich ist. Gegebenenfalls kann ein weiterer Pumpendeckel 44 aus Sicherheitsgründen, beispielsweise um eine Beschädigung oder Verschmutzung der Leiterplatte 34 sowie der elektrischen Komponenten der Leiterplatte 34 zu verhindern, vorteilhaft sein.The printed circuit board 34 has stator windings 42, which are arranged spaced apart from the permanent magnets 26 of the rotor in the axial direction. For protection against external influences, the pump housing 12 is further connected to a pump cover 44, so that a drying area 46 is formed between the boundary surface 30 facing the impeller and the pump cover 44. In particular, when all the stator windings 42 are arranged in a possibly multilayer printed circuit board 34, the printed circuit board 34 or Begrenzungselcment 32 at the same time the pump cover 44, so that in addition to the circuit board 34 and the limiting element 32, a further pump cover 44 is not required in principle. Optionally, a further pump cover 44 for safety reasons, for example, to prevent damage or contamination of the printed circuit board 34 and the electrical components of the circuit board 34, be advantageous.
Im dargestellten Ausführungsbeispiel weist die Leiterplatte 34 eine Buchse 48 auf, welche eine Drehwclle 50 des Pumpenrades 18 aufnimmt und lagert. Das Pumpenrad 18 kann gegebenenfalls zusätzlich an der der Buchse 48 gegenüberliegenden Seite an dem Pumpengehäuse 12 abgestutzt bzw. gelagert sein. Gegebenenfalls sind an der Außenseite der Buchse 48 und/oder an der Innenseite des Pumpendeckels 44 weitere Statorwicklungen vorgesehen. Der Pumpendeckel 44 und/ oder das Pumpengehäuse 12 kann zur Verbesserung des magnetischen Kreises auch aus einem magnetisch wirksamen Material bestehen.In the illustrated embodiment, the circuit board 34 has a socket 48, which receives a Drehwclle 50 of the impeller 18 and supports. The impeller 18 may optionally in addition to the sleeve 48th be trimmed or stored on the pump housing 12 opposite side. Optionally, 44 further stator windings are provided on the outside of the sleeve 48 and / or on the inside of the pump cover. The pump cover 44 and / or the pump housing 12 may also consist of a magnetically active material to improve the magnetic circuit.
Um die Statorwicklungen 42 mit elektrischer Energie zu versorgen, weist die Leiterplatte 34 vorzugsweise einen außerhalb des Pumpengehäuses 1.2 angeordneten Anschlussbcreich 52 auf, in dem Vcrbindungsinϊttel, beispielsweise ein Anschlussstecker 54, zur Verbindung mit einer Stromversorgung angeordnet sind. Der Anschlussstecker 54 kann auch innerhalb des Pumpengehäuses 12 und innerhalb des Pumpendeckels 44 angeordnet sein, wobei in diesem Fall die elektrischen Kontakte des Anschlusssteckers 54 direkt auf der Leiterplatte 34 sitzen können und das Pumpengehäuse 12 oder der Pumpendeckel 44 das Gehäuse des Anschlusssteckers 44 bilden können. Die Leiterplatte 34 kann ferner Elektrokomponenten 56 aufweisen, mit deren Hilfe die Nassläuferpumpe 10 gesteuert und geregelt werden kann.In order to supply the stator windings 42 with electrical energy, the printed circuit board 34 preferably has a connection region 52 arranged outside the pump housing 1.2, in which connection means, for example a connection plug 54, are arranged for connection to a power supply. The connector 54 may also be disposed within the pump housing 12 and within the pump cover 44, in which case the electrical contacts of the connector 54 may sit directly on the circuit board 34 and the pump housing 12 or the pump cover 44 may form the housing of the connector 44. The circuit board 34 may further comprise electrical components 56, by means of which the wet-running pump 10 can be controlled and regulated.
Die Leiterplatte 34 kann eine Öffnung 58 zur Aufnahme der Drehwelle 50 aufweisen (Fig. 2). Gegebenenfalls ist in der Öffnung 58 zusätzlich die Buchse 48 oder ein anderes Lagerelement angeordnet.The circuit board 34 may have an opening 58 for receiving the rotary shaft 50 (FIG. 2). Optionally, the bush 48 or another bearing element is additionally arranged in the opening 58.
Die Leiterplatte 34 kann vergleichbar zu einer herkömmlichen Elektroplatϊne mit aufgedruckten Leitungen ausgestaltet sein (Fig. 3). Dadurch sind die durch die Elektroleitungen gebildeten Statorwϊcklungen 42 etwas hervorstehend ausgebildet.The printed circuit board 34 can be designed in a manner comparable to a conventional printed circuit board with printed lines (FIG. 3). As a result, the stator windings 42 formed by the electric lines are slightly protruding.
Die Statorwicklungen 42 können jedoch auch in dem Material der Leiterplatte 34 eingelassen sein (Fig. 4).. Dadurch ist es leicht möglich, mehrere Schichten 60,62 hintereinander anzuordnen, wobei im dargestellten Ausfuhrungsbeispiel die Leiterplatte 34 aus einer Grundschicht 60 und einer Zusatzschicht 62 besteht Ferner weist die Zusatzschicht 62 die Öffnung 58 auf, in der eine Lagerhülse 64 eingesetzt ist, um die Drehwelle 50 des Pumpenrades 18 zu lagern. Durch den mehrschichtigen Aufbau der Leiterplatte 34 kann die Öffnung 58 auf der vom Pumpenrad 18 wegweisenden Seite durch die Grundschicht 60 verschlossen werden.However, the stator windings 42 can also be embedded in the material of the printed circuit board 34 (FIG. 4). As a result, it is easily possible to arrange a plurality of layers 60, 62 in succession, wherein in the exemplary embodiment illustrated Furthermore, the additional layer 62, the opening 58, in which a bearing sleeve 64 is used to support the rotary shaft 50 of the impeller 18. Due to the multilayer structure of the printed circuit board 34, the opening 58 can be closed by the base layer 60 on the side facing away from the impeller 18 side.
Ferner ist es möglich, auf beiden Seiten der Grundschicht 60 der Leiterplatte 34 Statorwicklungen 42 vorzusehen (Fig. 5). In diesem Fall sind die zum Nassbereich 28 weisenden Statorwicklungen 42 mit Hilfe einer Schutzfolϊc 66 abgedeckt. In diesem Fall wird die zum Nassbereich weisende Begrenzungsfläche 30, welche die Grenze zwischen dem Nassbereich 28 und dem Trockenbereich 46 definiert, von der Schutzfolie 66 ausgebildet.Furthermore, it is possible to provide stator windings 42 on both sides of the base layer 60 of the printed circuit board (FIG. 5). In this case, the stator windings 42 facing the wet region 28 are covered with the aid of a protective foil 66. In this case, the wet-area boundary surface 30 defining the boundary between the wet area 28 and the dry area 46 is formed by the protective film 66.
Eine andere Form (Fig. 6) ist einer Leiterplatte 34 aus IMS (insulated meta! Substrate). IMS ist insbesondere eine AI-Platte 68 als Substrat, auf welche die Schichten 60, 62, welche die Leiterplatte 34 darstellen, aufgebracht werden. Diese Schichten 60, 62 bestehen vorzugsweise aus ähnlichen oder gleichen Materialien wie eine handelsübliche Leiterplatte. Another form (Figure 6) is a printed circuit board 34 of IMS (insulated meta! Substrates). In particular, IMS is an Al plate 68 as a substrate to which the layers 60, 62 constituting the circuit board 34 are applied. These layers 60, 62 are preferably made of similar or the same materials as a commercially available printed circuit board.

Claims

Patentansprüche claims
1. Nassläuferpumpe zum Fördern eines Fluids, insbesondere Kühlwasserpumpe für ein Kraftfahrzeug, mit1. wet-runner pump for conveying a fluid, in particular cooling water pump for a motor vehicle, with
einem von dem Fluid durchströmbaren Nassbereich (28) zur Kühlung der Nassläuferpumpe (10) ,a wet region (28) through which the fluid can flow for cooling the wet-running pump (10),
einem vom dem Nassbereich (28) getrennten Trocken bercich (46) zur betriebssicheren Anordnung von elektrischen Komponenten unda dry area (46) separate from the wet area (28) for the reliable arrangement of electrical components and
einer zur zumindest teilweisen Abgrenzung des Nassbercichs (28) von dem Trockenbereich (46) vorgesehenen Leiterplatte (34), die zur Verbindung mit einem Stator (42) und/ oder zur Ausbildung des Stators (42) elektrische Leitungen aufweist.a for the at least partial delimitation of Nassbercichs (28) of the drying area (46) provided circuit board (34) having for connection to a stator (42) and / or for forming the stator (42) electrical leads.
2.. Nassläuferpumpe nach Anspruch 1 dadurch gekennzeichnet, dass innerhalb des Nassbereϊchs (28) ein mit einem Pumpenrad (18) verbundener Rotor (26), der mit dem insbesondere im Trockenbereich (46) angeordneten Stator (42) zusammenwirkt, angeordnet ist.2 .. Wet-runner pump according to claim 1, characterized in that within the Nassbereϊchs (28) with a pump wheel (18) connected rotor (26) which cooperates with the in particular in the dry area (46) arranged stator (42) is arranged.
3. Nassläuferpumpe zum Fördern eines Fluids, insbesondere Kühlwasserpumpe für ein Kraftfahrzeug, mit3. wet-running pump for conveying a fluid, in particular cooling water pump for a motor vehicle, with
einem mit einem Pumpenrad (18) verbundenen Rotor (26),a rotor (26) connected to an impeller (18),
einem mit dem Rotor (26) zusammenwirkenden Stator (42) unda stator (42) cooperating with the rotor (26) and
einer elektrische Leitungen aufweisenden Leiterplatte (34), deren elektrische Leitungen zumindest teilweise den Stator (42) ausbilden. a printed circuit board (34) having electrical leads, whose electrical leads at least partially form the stator (42).
4.. Nassläuferpumpe nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, dass die Leiterplatte (34) Statorwicklungen (42) des Stators aufweist, die insbesondere durch die elektrischen Leitungen der Leiterplatte (34) ausgebildet sind.4 .. Wet-runner pump according to one of claims 1-3, characterized in that the printed circuit board (34) stator windings (42) of the stator, which are formed in particular by the electrical lines of the printed circuit board (34).
5. Nassläuferpumpe nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, dass die Leiterplatte (34) mindestens eine Zusatzschicht (62) zur Ausbildung einer mehrschichtigen Leiterplatte (34) mit mehreren, insbesondere hintereinander angeordneten Statorwicklungen (42) aufweist.5. Wet-running pump according to one of claims 1 - 4, characterized in that the printed circuit board (34) has at least one additional layer (62) for forming a multilayer printed circuit board (34) having a plurality, in particular successively arranged stator windings (42).
6. Nassläuferpumpe nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, dass die Leiterplatte (34) eine Öffnung (58) zur Aufnahme einer Drchwelle (50) des Pumpenrades (18) aufweist..6. wet-running pump according to one of claims 1-5, characterized in that the circuit board (34) has an opening (58) for receiving a Drchwelle (50) of the impeller (18) ..
7. Nassläuferpumpe nach Anspruch 6, dadurch gekennzeichnet, dass die Öffnung (58) an der vom Pumpenrad ( 18) wegweisenden Seite verschlossen ist.7. Wet-runner pump according to claim 6, characterized in that the opening (58) is closed at the side facing away from the impeller (18) side.
8. Nassiäuferpumpe nach einem der Ansprüche 1 - I1 dadurch gekennzeichnet, dass die Leiterplatte (34) eine an einer zum Nassbereich (28) weisenden Seite angeordnete Statorwicklung (42), die mit einer feuchtigkeitsdichten Schutzlage (66), insbesondere einer selbstklebenden Folie, abgedeckt ist, aufweist.8. wet-running pump according to one of claims 1 - I 1, characterized in that the circuit board (34) arranged at one to the wet area (28) side stator winding (42) with a moisture-proof protective layer (66), in particular a self-adhesive film, is covered has.
9. Nassiäuferpumpe nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, dass die Leiterplatte (34) Bcfestigungsmittel (40) zur Montage mit einem Pumpengehäuse (12) und/ oder einem Pumpendeckel (44) aufweist.9. wet pump according to one of claims 1-8, characterized in that the printed circuit board (34) compression bonding means (40) for mounting with a pump housing (12) and / or a pump cover (44).
10. Nassiäuferpumpe nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, dass die Leiterplatte (34) einen Anschlussbereich (52) mit elektrischen Verbindungsmitteln (54) zur Verbindung mit einer Stromversorgung aufweist, wobei der Anschlussbereich (52) von dem Pumpenrad (18) weg gerichtet außerhalb eines Pumpengehäuses (12) angeordnet ist.10. Wet pump according to one of claims 1 - 9, characterized in that the printed circuit board (34) has a connection region (52). with electrical connection means (54) for connection to a power supply, wherein the connection region (52) of the impeller (18) directed away outside of a pump housing (12) is arranged.
11. Nassläuferpumpe nach einem der Ansprüche 2 - 10, dadurch gekennzeichnet, dass der Rotor (26) und der Stator (42) durch die Leiterplatte (34) feuchtigkeitsdicht voneinander getrennt sind.11. Wet-runner pump according to one of claims 2 - 10, characterized in that the rotor (26) and the stator (42) by the circuit board (34) are moisture-tightly separated from each other.
12. Verwendung einer Leiterplatte (34) als Bcgrenzungselemcnt (32) zum Begrenzen eines Nassbereϊchs (28) einer Nassläuferpumpe (10), insbesondere als Spalftopf, in einer Nassläufci pumpe (10), insbesondere nach einem der Ansprüche 1 - 11. 12. Use of a printed circuit board (34) as Bcgrenzungselemcnt (32) for limiting a Nassbereϊchs (28) of a wet-runner pump (10), in particular as Spalftopf, in a Nassläufci pump (10), in particular according to one of claims 1-11.
EP06725475A 2005-04-02 2006-03-31 Wet running pump Not-in-force EP1866546B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005015213A DE102005015213A1 (en) 2005-04-02 2005-04-02 Wet running pump for use as cooling water pump in motor vehicles has stators that are connected to printed circuit board (PCB) that separates wet and dry areas
PCT/EP2006/061229 WO2006106081A1 (en) 2005-04-02 2006-03-31 Wet running pump

Publications (2)

Publication Number Publication Date
EP1866546A1 true EP1866546A1 (en) 2007-12-19
EP1866546B1 EP1866546B1 (en) 2010-05-12

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EP06725475A Not-in-force EP1866546B1 (en) 2005-04-02 2006-03-31 Wet running pump

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US (1) US8360755B2 (en)
EP (1) EP1866546B1 (en)
JP (1) JP5139262B2 (en)
AT (1) ATE467767T1 (en)
DE (2) DE102005015213A1 (en)
WO (1) WO2006106081A1 (en)

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DE102005015213A1 (en) 2006-10-05
ATE467767T1 (en) 2010-05-15
EP1866546B1 (en) 2010-05-12
JP5139262B2 (en) 2013-02-06
JP2008534852A (en) 2008-08-28
US20090232675A1 (en) 2009-09-17
WO2006106081A1 (en) 2006-10-12
US8360755B2 (en) 2013-01-29
DE502006006935D1 (en) 2010-06-24

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