EP3006742A1 - Motor vehicle electric coolant pump - Google Patents

Motor vehicle electric coolant pump Download PDF

Info

Publication number
EP3006742A1
EP3006742A1 EP14188132.6A EP14188132A EP3006742A1 EP 3006742 A1 EP3006742 A1 EP 3006742A1 EP 14188132 A EP14188132 A EP 14188132A EP 3006742 A1 EP3006742 A1 EP 3006742A1
Authority
EP
European Patent Office
Prior art keywords
coolant pump
motor
pump according
impeller
thrust washer
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
EP14188132.6A
Other languages
German (de)
French (fr)
Other versions
EP3006742B1 (en
Inventor
Wolfgang Zacher
René PATZNER
Gerald PORZ
Alexander Findeisen
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 Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to EP14188132.6A priority Critical patent/EP3006742B1/en
Publication of EP3006742A1 publication Critical patent/EP3006742A1/en
Application granted granted Critical
Publication of EP3006742B1 publication Critical patent/EP3006742B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
    • 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
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0465—Ceramic bearing designs
    • 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
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps

Definitions

  • the invention relates to an electric vehicle coolant pump with a housing having a pump unit and a motor unit, wherein the pump unit has an inlet and an outlet, wherein the motor unit has a motor rotor and a motor stator, wherein the motor rotor an impeller member with blade elements of the pump unit having axially and radially acting bearing means are provided for the motor rotor.
  • Electric automotive coolant pumps are well known in the art. Electric vehicle coolant pumps can be operated exactly as needed and consequently adapt the delivery of coolant to the engine temperature. This needs-based promotion leads to the fact that the motor unit is operated in very different load conditions, which in turn leads to an increased load on the radial and thrust bearings. In particular, the load of the axial bearing can in this case lead to increased noise of the vehicle coolant pump, which is perceived as disturbing by the or the vehicle users.
  • An example of such a motor vehicle coolant pump is in EP 2 273 123 A1 to find. This document discloses a coolant pump in which a metallic stop ring is provided at the distal end of a rotor axis, serves as an axial bearing.
  • the object of the invention is therefore to avoid the above-mentioned disadvantage in a simple and cost-effective manner.
  • This object is achieved in that a thrust washer assembly is provided for the impeller member in the inlet nozzle. This results in a decoupling of the axial vibrations of the motor rotor from Housing part of the pump unit instead, resulting in a significant noise reduction.
  • the thrust washer assembly on a directed towards the impeller member starting device and a remote from the impeller body damping member.
  • the elastic connection between the pump housing and thrust washer can be significantly reduced, whereby the noise level of the pump is again significantly reduced, since the axial movements of the motor rotor are damped.
  • the start-up member made of steel, sintered metal or ceramic, preferably stainless steel, be made and the damping member be made of rubber.
  • the impeller member has an annular axial shoulder which is in operative connection with the thrust washer assembly.
  • the thrust washer assembly may be arranged form fit, material and / or non-positively in the inlet nozzle and thereby offers a high degree of flexibility, in particular with regard to the assembly.
  • the starting element engages in the damping member and the damping member is pressed in the inlet nozzle.
  • an inner diameter d 1 of the thrust washer assembly is less than or equal to an inner diameter d 2 of a suction mouth of the impeller member. It is also advantageous if the inner diameter d 1 of the thrust washer assembly is greater than or equal to an inner diameter d 3 of the inlet nozzle.
  • the pump unit 6 furthermore has an impeller member 14 with blade elements 16 which, driven by the motor unit 8, ensure cooling fluid delivery from the inlet stub 10 to the outlet stub 12.
  • the impeller member 14 has a suction mouth, which here is essentially formed by an annular axial extension 18.
  • the impeller member 14 is connected in the present embodiment in a known manner with a motor rotor 20 of the motor unit 8, wherein the impeller member 14 has a cylindrical projection 22 through which the motor rotor 20, as described below is mounted. Furthermore, the motor unit 8 has a motor stator 24, which generates a rotationally moving magnetic field, through which the motor rotor 20 is entrained.
  • the motor stator 24 is fluidly separated in the present embodiment by a split pot 26 from the motor rotor 20.
  • the containment shell 26 in this case also forms a bearing mandrel 28, on which the motor rotor 20 is radially supported by the cylindrical projection 22.
  • the view is still a board 30 and to take a motor connector 32, which serve in a known manner, the power supply and the control of the motor vehicle coolant pump 2.
  • a force is exerted on the motor rotor 20 in the direction of the inlet nozzle 10, whereby an axial bearing is to be provided in the region of the end of the motor rotor 20 facing the inlet nozzle 10.
  • This is inventively formed by a thrust washer 34.
  • the thrust washer assembly 34 consists of a stainless steel made starting member 36 which engages in a damping member 38 made of rubber, wherein the damping member 38 is pressed into a recess 40 of the inlet nozzle 10.
  • the annular axial shoulder 18 which runs in the axial direction on the stopper 36.
  • an inner diameter d 1 of the thrust washer assembly 34 is smaller than an inner diameter d 2 of the suction port 18 of the impeller member 14. Furthermore, the inner diameter d 1 of the thrust washer assembly 34 should be greater equal to an inner diameter d 3 of the inlet nozzle 10 is selected ,
  • the invention is not limited to the embodiment shown here.
  • the motor rotor 20 may also be designed as an external rotor, wherein in such a case, the radial bearing can differ significantly from the embodiment shown here.

Landscapes

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

Abstract

Die Erfindung betrifft eine elektrische KFZ-Kühlmittelpumpe mit einem Gehäuse (4), das eine Pumpeneinheit (6) und eine Motoreinheit (8) aufweist, wobei die Pumpeneinheit (6) einen Einlass- und einen Auslassstutzen (10, 12) aufweist, wobei die Motoreinheit (8) einen Motorrotor (20) sowie einen Motorstator (24) besitzt, wobei der Motorrotor (20) ein Laufradorgan (14) mit Schaufelelementen (16) der Pumpeneinheit (6) aufweist, wobei axial und radial wirkende Lagermittel (22, 28; 18, 34) für den Motorrotor (20) vorgesehen sind, wobei im Einlassstutzen (10) eine Anlaufscheibenanordnung (34) für das Laufradorgan (14) vorgesehen ist.The invention relates to an electric vehicle coolant pump with a housing (4), which has a pump unit (6) and a motor unit (8), wherein the pump unit (6) has an inlet and an outlet (10, 12), wherein the Motor unit (8) has a motor rotor (20) and a motor stator (24), wherein the motor rotor (20) has an impeller member (14) with blade elements (16) of the pump unit (6), wherein axially and radially acting bearing means (22, 28 ; 18, 34) are provided for the motor rotor (20), wherein in the inlet socket (10) a thrust washer arrangement (34) for the impeller member (14) is provided.

Description

Die Erfindung betrifft eine elektrische Kfz-Kühlmittelpumpe mit einem Gehäuse, dass eine Pumpeneinheit und eine Motoreinheit aufweist, wobei die Pumpeneinheit einen Einlass- und einen Auslassstutzen aufweist, wobei die Motoreinheit einen Motorrotor sowie einen Motorstator besitzt, wobei der Motorrotor ein Laufradorgan mit Schaufelelementen der Pumpeneinheit aufweist, wobei axial und radial wirkende Lagermittel für den Motorrotor vorgesehen sind.The invention relates to an electric vehicle coolant pump with a housing having a pump unit and a motor unit, wherein the pump unit has an inlet and an outlet, wherein the motor unit has a motor rotor and a motor stator, wherein the motor rotor an impeller member with blade elements of the pump unit having axially and radially acting bearing means are provided for the motor rotor.

Derartige elektrische Kfz-Kühlmittelpumpen sind aus dem Stand der Technik hinlänglich bekannt. Elektrische Kfz-Kühlmittelpumpen können exakt bedarfsgerecht betrieben werden und passen folglich die Förderung von Kühlmitteln der Motortemperatur an. Diese bedarfsgerechte Förderung führt dazu, dass die Motoreinheit in ganz unterschiedlichen Lastzuständen betrieben wird, was wiederum zu einer erhöhten Belastung der Radial- und Axiallager führt. Insbesondere die Belastung der Axiallagerung kann hierbei zu einer erhöhten Geräuschentwicklung der Kfz-Kühlmittelpumpe führen, die als störend durch den oder die Fahrzeugnutzer empfunden wird. Ein Beispiel für eine derartige Kfz-Kühlmittelpumpe ist in der EP 2 273 123 A1 zu finden. Diese Druckschrift offenbart eine Kühlmittelpumpe, bei der am distalen Ende einer Rotorachse ein metallischer Anschlagring vorgesehen ist, als Axiallager dient.Such electric automotive coolant pumps are well known in the art. Electric vehicle coolant pumps can be operated exactly as needed and consequently adapt the delivery of coolant to the engine temperature. This needs-based promotion leads to the fact that the motor unit is operated in very different load conditions, which in turn leads to an increased load on the radial and thrust bearings. In particular, the load of the axial bearing can in this case lead to increased noise of the vehicle coolant pump, which is perceived as disturbing by the or the vehicle users. An example of such a motor vehicle coolant pump is in EP 2 273 123 A1 to find. This document discloses a coolant pump in which a metallic stop ring is provided at the distal end of a rotor axis, serves as an axial bearing.

Aufgabe der Erfindung ist es daher, den oben genannten Nachteil auf einfache und kostengünstige Weise zu vermeiden.The object of the invention is therefore to avoid the above-mentioned disadvantage in a simple and cost-effective manner.

Diese Aufgabe wird dadurch gelöst, dass im Einlassstutzen eine Anlaufscheibenanordnung für das Laufradorgan vorgesehen ist. Hierdurch findet eine Entkopplung der Axialschwingungen des Motorrotors vom Gehäuseteil der Pumpeneinheit statt, was zu einer deutlichen Geräuschreduzierung führt.This object is achieved in that a thrust washer assembly is provided for the impeller member in the inlet nozzle. This results in a decoupling of the axial vibrations of the motor rotor from Housing part of the pump unit instead, resulting in a significant noise reduction.

In besonders vorteilhafterweise weist die Anlaufscheibenanordnung ein zum Laufradorgan gerichtetes Anlauforgan und ein vom Laufradorgan abgewandtes Dämpfungsorgan auf. Auf diese Weise kann die elastische Verbindung zwischen Pumpengehäuse und Anlaufscheibe deutlich gemindert werden, wodurch das Geräuschniveau der Pumpe noch einmal erheblich reduziert wird, da die axialen Bewegungen des Motorrotors gedämpft werden. Hierbei kann das Anlauforgan aus Stahl, Sintermetall oder Keramik, vorzugsweise Edelstahl, gefertigt sein und das Dämpfungsorgan aus Gummi hergestellt sein.In a particularly advantageous manner, the thrust washer assembly on a directed towards the impeller member starting device and a remote from the impeller body damping member. In this way, the elastic connection between the pump housing and thrust washer can be significantly reduced, whereby the noise level of the pump is again significantly reduced, since the axial movements of the motor rotor are damped. Here, the start-up member made of steel, sintered metal or ceramic, preferably stainless steel, be made and the damping member be made of rubber.

In vorteilhafterweise weist das Laufradorgan einen ringförmigen Axialansatz auf, der in Wirkverbindung mit der Anlaufscheibenanordnung steht.In an advantageous manner, the impeller member has an annular axial shoulder which is in operative connection with the thrust washer assembly.

Die Anlaufscheibenanordnung kann form-, stoff- und/oder kraftschlüssig im Einlassstutzen angeordnet sein und bietet hierdurch insbesondere hinsichtlich der Montage eine hohe Flexibilität. In einer besonders vorteilhaften Ausführungsform greift das Anlauforgan in das Dämpfungsorgan ein und ist das Dämpfungsorgan im Einlassstutzen eingepresst.The thrust washer assembly may be arranged form fit, material and / or non-positively in the inlet nozzle and thereby offers a high degree of flexibility, in particular with regard to the assembly. In a particularly advantageous embodiment, the starting element engages in the damping member and the damping member is pressed in the inlet nozzle.

Um eine optimale Einströmung des Kühlfluids in die Pumpeneinheit zu gewährleisten, ist in vorteilhafterweise ein Innendurchmesser d1 der Anlaufscheibenanordnung kleiner gleich eines Innendurchmessers d2 eines Saugmundes des Laufradorgans. Hierbei ist es ebenfalls vorteilhaft, wenn der Innendurchmesser d1 der Anlaufscheibenanordnung größer gleich eines Innendurchmessers d3 des Einlassstutzens ist.In order to ensure an optimal inflow of the cooling fluid into the pump unit, advantageously an inner diameter d 1 of the thrust washer assembly is less than or equal to an inner diameter d 2 of a suction mouth of the impeller member. It is also advantageous if the inner diameter d 1 of the thrust washer assembly is greater than or equal to an inner diameter d 3 of the inlet nozzle.

Die Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert, hierbei zeigt:

  • Figur 1 eine Schnittansicht einer erfindungsgemäßen Kfz-Kühlmittelpumpe, und
  • Figur 2 eine Detailansicht der Anlaufscheibenanordnung aus Figur 1.
  • Figur 1 zeigt in einer Schnittansicht eine elektrische Kfz-Kühlmittelpumpe 2. Die Kühlmittelpumpe 2 besitzt auf bekannte Weise ein Gehäuse 4, das eine Pumpeneinheit 6 und eine Motoreinheit 8 aufweist. Das Gehäuse 4 ist hierzu mehrteilig ausgebildet. Die Kfz-Kühlmittelpumpe 2 dient zum pumpen eines flüssigen Kühlfluids, beispielsweise Wasser, in einem Kühl-oder Heizkreis, der ein Hauptkreis oder ein Nebenkreis sein kann und weist hierzu einen axialen Einlassstutzen 10 sowie einen tangentialen Auslassstutzen 12 auf.
The invention will be explained in more detail with reference to a drawing, in which:
  • FIG. 1 a sectional view of a motor vehicle coolant pump according to the invention, and
  • FIG. 2 a detailed view of the thrust washer assembly FIG. 1 ,
  • FIG. 1 shows in a sectional view of an electric motor vehicle coolant pump 2. The coolant pump 2 has in a known manner a housing 4, which has a pump unit 6 and a motor unit 8. The housing 4 is for this purpose designed in several parts. The motor vehicle coolant pump 2 serves to pump a liquid cooling fluid, for example water, in a cooling or heating circuit, which may be a main circuit or a secondary circuit, and has an axial inlet connection 10 and a tangential outlet connection 12 for this purpose.

Die Pumpeneinheit 6 weist desweiteren ein Laufradorgan 14 mit Schaufelelementen 16 auf, die von der Motoreinheit 8 angetrieben eine Kühlfluidförderung vom Einlassstutzen 10 zum Auslassstutzen 12 gewährleisten. Das Laufradorgan 14 weist in diesem Zusammenhang einen Saugmund auf, der hier im Wesentlichen durch einen ringförmigen Axialansatz 18 ausgebildet ist.The pump unit 6 furthermore has an impeller member 14 with blade elements 16 which, driven by the motor unit 8, ensure cooling fluid delivery from the inlet stub 10 to the outlet stub 12. In this context, the impeller member 14 has a suction mouth, which here is essentially formed by an annular axial extension 18.

Das Laufradorgan 14 ist im vorliegenden Ausführungsbeispiel auf bekannte Weise mit einem Motorrotor 20 der Motoreinheit 8 verbunden, wobei das Laufradorgan 14 einen zylinderförmigen Ansatz 22 aufweist, über den der Motorrotor 20, wie weiter unten beschrieben gelagert ist. Desweiteren weist die Motoreinheit 8 einen Motorstator 24 auf, der ein rotatorisch wanderndes Magnetfeld erzeugt, durch den der Motorrotor 20 mitgeschleppt wird. Der Motorstator 24 ist im vorliegenden Ausführungsbeispiel durch einen Spalttopf 26 vom Motorrotor 20 fluidisch getrennt. Der Spalttopf 26 bildet hierbei auch noch einen Lagerdorn 28 aus, auf dem der Motorrotor 20 über den zylinderförmigen Ansatz 22 radial gelagert ist. Desweiteren ist der Ansicht noch eine Platine 30 und ein Motorstecker 32 zu entnehmen, die auf bekannte Weise der Stromversorgung und der Ansteuerung der Kfz-Kühlmittelpumpe 2 dienen. In Förderbetrieb wird auf den Motorrotor 20 eine Kraft in Richtung des Einlassstutzens 10 ausgeübt, wodurch im Bereich des zum Einlassstutzens 10 gerichteten Ende des Motorrotors 20 eine Axiallagerung vorzusehen ist. Diese wird erfindungsgemäß durch eine Anlaufscheibenanordnung 34 ausgebildet.The impeller member 14 is connected in the present embodiment in a known manner with a motor rotor 20 of the motor unit 8, wherein the impeller member 14 has a cylindrical projection 22 through which the motor rotor 20, as described below is mounted. Furthermore, the motor unit 8 has a motor stator 24, which generates a rotationally moving magnetic field, through which the motor rotor 20 is entrained. The motor stator 24 is fluidly separated in the present embodiment by a split pot 26 from the motor rotor 20. The containment shell 26 in this case also forms a bearing mandrel 28, on which the motor rotor 20 is radially supported by the cylindrical projection 22. Furthermore, the view is still a board 30 and to take a motor connector 32, which serve in a known manner, the power supply and the control of the motor vehicle coolant pump 2. In conveying operation, a force is exerted on the motor rotor 20 in the direction of the inlet nozzle 10, whereby an axial bearing is to be provided in the region of the end of the motor rotor 20 facing the inlet nozzle 10. This is inventively formed by a thrust washer 34.

Wie Figur 2 deutlich zeigt, besteht die Anlaufscheibenanordnung 34 aus einem aus Edelstahl hergestellten Anlauforgan 36, das in ein aus Gummi hergestelltes Dämpfungsorgan 38 eingreift, wobei das Dämpfungsorgan 38 in eine Aussparung 40 des Einlassstutzens 10 eingepresst ist. Zu erkennen ist hier auch der ringförmige Axialansatz 18, der in Axialrichtung auf das Anlauforgan 36 aufläuft. Am zur Platine 30 gerichteten Ende des Motorrotors ist kein Axiallager vorzusehen, da selbst bei Nichtförderung eine Vorzugsrichtung des Motorrotors 20 in Richtung des Einlassstutzens 10 vorgegeben ist.As FIG. 2 clearly shows, the thrust washer assembly 34 consists of a stainless steel made starting member 36 which engages in a damping member 38 made of rubber, wherein the damping member 38 is pressed into a recess 40 of the inlet nozzle 10. Evident here is also the annular axial shoulder 18, which runs in the axial direction on the stopper 36. At the end of the motor rotor directed towards the circuit board 30, no axial bearing is to be provided, since even when not being conveyed, a preferred direction of the motor rotor 20 in the direction of the inlet connection 10 is predetermined.

Um eine optimale Strömungsführung des Kühlfluids zu gewährleisten, ist ein Innendurchmesser d1 der Anlaufscheibenanordnung 34 kleiner gleich eines Innendurchmesser d2 des Saugmundes 18 des Laufradorgans 14. Desweiteren sollte der Innendurchmesser d1 der Anlaufscheibenanordnung 34 größer gleich eines Innendurchmesser d3 des Einlaufstutzens 10 gewählt werden.In order to ensure optimum flow guidance of the cooling fluid, an inner diameter d 1 of the thrust washer assembly 34 is smaller than an inner diameter d 2 of the suction port 18 of the impeller member 14. Furthermore, the inner diameter d 1 of the thrust washer assembly 34 should be greater equal to an inner diameter d 3 of the inlet nozzle 10 is selected ,

Desweiteren sollte deutlich sein, dass die Erfindung nicht auf das hier dargestellte Ausführungsbeispiel beschränkt ist. Insbesondere kann der Motorrotor 20 auch als Außenläufer ausgebildet sein, wobei in einem derartigen Fall auch die Radiallagerung deutlich von der hier gezeigten Ausführungsform abweichen kann.Furthermore, it should be clear that the invention is not limited to the embodiment shown here. In particular, the motor rotor 20 may also be designed as an external rotor, wherein in such a case, the radial bearing can differ significantly from the embodiment shown here.

Claims (8)

Elektrische KFZ-Kühlmittelpumpe mit einem Gehäuse (4), das eine Pumpeneinheit (6) und eine Motoreinheit (8) aufweist, wobei die Pumpeneinheit (6) einen Einlass- und einen Auslassstutzen (10, 12) aufweist, wobei die Motoreinheit (8) einen Motorrotor (20) sowie einen Motorstator (24) besitzt, wobei der Motorrotor (20) ein Laufradorgan (14) mit Schaufelelementen (16) der Pumpeneinheit (6) aufweist, wobei axial und radial wirkende Lagermittel (22, 28; 18, 34) für den Motorrotor (20) vorgesehen sind, dadurch gekennzeichnet, dass im Einlassstutzen (10) eine Anlaufscheibenanordnung (34) für das Laufradorgan (14) vorgesehen ist.An electric automotive coolant pump comprising a housing (4) having a pump unit (6) and a motor unit (8), the pump unit (6) having inlet and outlet ports (10, 12), the motor unit (8) a motor rotor (20) and a motor stator (24), the motor rotor (20) having an impeller member (14) with vane elements (16) of the pump unit (6), axially and radially acting bearing means (22, 28, 18, 34 ) are provided for the motor rotor (20), characterized in that in the inlet socket (10) a thrust washer arrangement (34) for the impeller member (14) is provided. Elektrische KFZ-Kühlmittelpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Anlaufscheibenanordnung (34) ein zum Laufradorgan (14) gerichtetes Anlauforgan und ein vom Laufradorgan (14) abgewandtes Dämpfungsorgan aufweist.Electric motor vehicle coolant pump according to claim 1, characterized in that the stop disk arrangement (34) has a start-up element directed towards the impeller element (14) and a damping element facing away from the impeller element (14). Elektrische KFZ-Kühlmittelpumpe nach Anspruch 2, dadurch gekennzeichnet, dass das Anlauforgan (36) aus Stahl, Sintermetall oder Keramik, vorzugsweise Edelstahl, gefertigt ist und dass das Dämpfungsorgan (38) aus Gummi hergestellt ist.Electric vehicle coolant pump according to claim 2, characterized in that the starting member (36) made of steel, sintered metal or ceramic, preferably stainless steel, is manufactured and that the damping member (38) is made of rubber. Elektrische KFZ-Kühlmittelpumpe nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, dass das Laufradorgan (14) einen ringförmigen Axialansatz (18) aufweist.Electric vehicle coolant pump according to one of claims 1 - 3, characterized in that the impeller member (14) has an annular axial extension (18). Elektrische KFZ-Kühlmittelpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Anlaufscheibenanordnung (24) form-, stoff- und/oder kraftschlüssig im Einlassstutzen (10) angeordnet ist.Electric vehicle coolant pump according to one of the preceding claims, characterized in that the thrust washer assembly (24) is arranged form-fitting, material and / or non-positively in the inlet nozzle (10). Elektrische KFZ-Kühlmittelpumpe nach Anspruch 5, dadurch gekennzeichnet, dass das Anlauforgan (36) in das Dämpfungsorgan (38) eingreift und das Dämpfungsorgan (38) im Einlassstutzen (10) eingepresst ist.Electric vehicle coolant pump according to claim 5, characterized in that the starting member (36) engages in the damping member (38) and the damping member (38) in the inlet nozzle (10) is pressed. Elektrische KFZ-Kühlmittelpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass ein Innendurchmesser d1 der Anlaufscheibenanordnung (34) kleiner gleich eines Innendurchmessers d2 eines Saugmundes (18) des Laufradorgans (14) ist.Electric motor coolant pump according to one of the preceding claims, characterized in that an inner diameter d 1 of the thrust washer assembly (34) is less than or equal to an inner diameter d 2 of a suction mouth (18) of the impeller member (14). Elektrische KFZ-Kühlmittelpumpe nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Innendurchmesser d1 der Anlaufscheibenanordnung (34) größer gleich eines Innendurchmessers d3 des Einlassstutzens (10) ist.Electric vehicle coolant pump according to one of the preceding claims, characterized in that the inner diameter d 1 of the thrust washer assembly (34) is greater than or equal to an inner diameter d 3 of the inlet nozzle (10).
EP14188132.6A 2014-10-08 2014-10-08 Motor vehicle electric coolant pump Active EP3006742B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14188132.6A EP3006742B1 (en) 2014-10-08 2014-10-08 Motor vehicle electric coolant pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14188132.6A EP3006742B1 (en) 2014-10-08 2014-10-08 Motor vehicle electric coolant pump

Publications (2)

Publication Number Publication Date
EP3006742A1 true EP3006742A1 (en) 2016-04-13
EP3006742B1 EP3006742B1 (en) 2021-12-01

Family

ID=51660404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14188132.6A Active EP3006742B1 (en) 2014-10-08 2014-10-08 Motor vehicle electric coolant pump

Country Status (1)

Country Link
EP (1) EP3006742B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3418577A1 (en) * 2017-06-22 2018-12-26 MS-Schramberg Holding GmbH & Co. KG Rotor assembly and method for producing a rotor assembly
WO2022037780A1 (en) 2020-08-20 2022-02-24 Pierburg Pump Technology Gmbh Automotive electronic fluid pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557376A1 (en) * 1974-12-24 1976-07-08 Warman Int Ltd SELF-CENTERING SOCKET ARRANGEMENT
JPS6435098A (en) * 1987-07-30 1989-02-06 Ebara Corp Non-volumetric type pump
JP2002138990A (en) * 2000-11-07 2002-05-17 Ebara Corp Motor pump
DE10104788A1 (en) * 2001-02-02 2002-08-29 Federal Mogul Friedberg Gmbh Mechanical seal with radial anti-rotation lock
FR2911166A1 (en) * 2007-01-09 2008-07-11 Siebec Societe Par Actions Sim Magnetic drive pump for conveying e.g. corrosive liquid, has sliding sealing device inserted between front wall and rotor with interposition of supports for compensating misalignment between wall and rotor
EP2273123A1 (en) 2009-07-08 2011-01-12 Pierburg Pump Technology GmbH Axial bearing for a pump wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2557376A1 (en) * 1974-12-24 1976-07-08 Warman Int Ltd SELF-CENTERING SOCKET ARRANGEMENT
JPS6435098A (en) * 1987-07-30 1989-02-06 Ebara Corp Non-volumetric type pump
JP2002138990A (en) * 2000-11-07 2002-05-17 Ebara Corp Motor pump
DE10104788A1 (en) * 2001-02-02 2002-08-29 Federal Mogul Friedberg Gmbh Mechanical seal with radial anti-rotation lock
FR2911166A1 (en) * 2007-01-09 2008-07-11 Siebec Societe Par Actions Sim Magnetic drive pump for conveying e.g. corrosive liquid, has sliding sealing device inserted between front wall and rotor with interposition of supports for compensating misalignment between wall and rotor
EP2273123A1 (en) 2009-07-08 2011-01-12 Pierburg Pump Technology GmbH Axial bearing for a pump wheel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3418577A1 (en) * 2017-06-22 2018-12-26 MS-Schramberg Holding GmbH & Co. KG Rotor assembly and method for producing a rotor assembly
WO2022037780A1 (en) 2020-08-20 2022-02-24 Pierburg Pump Technology Gmbh Automotive electronic fluid pump
DE112020007510T5 (en) 2020-08-20 2023-06-22 Pierburg Pump Technology Gmbh Electronic automotive fluid pump

Also Published As

Publication number Publication date
EP3006742B1 (en) 2021-12-01

Similar Documents

Publication Publication Date Title
EP3433496B1 (en) Magnetic coupling pump
EP3374642B1 (en) Electric axial-flow liquid pump for motor vehicle
DE102016122784A1 (en) Electric vehicle coolant pump
EP3540233A1 (en) Centrifugal pump assembly with rotatable valve
EP2899404A1 (en) Centrifugal pump impeller
DE102011055599A1 (en) Pump for temperature circuit in vehicle, has housing with pump chamber, and rotatable blade wheel arranged in pump chamber for conveying fluid, where flow component is arranged on blade wheel for generating pressure field
DE102015106610A1 (en) pump device
EP2491273B1 (en) Spindle motor
EP3224481A1 (en) Centrifugal pump with axially discharging radial impeller
WO2014180711A1 (en) Pump arrangement
EP3006742A1 (en) Motor vehicle electric coolant pump
EP1945955B1 (en) Fluid pump
EP2002123B1 (en) Fluid pump
WO2022263370A1 (en) Pump and vehicle comprising such a pump
DE102015106612A1 (en) pump device
DE102013113362A1 (en) Adjustable pump for an internal combustion engine
WO2020104130A1 (en) Rotor mounting unit having a cooling function
EP3012457B1 (en) Electric motor vehicle coolant pump
DE102008056106B4 (en) Side channel blower, in particular secondary air blower for an internal combustion engine
DE112017003579T5 (en) SEAL ASSEMBLY AND TURBOLADER
EP2990651B1 (en) Pump casing
EP3080459B1 (en) Wet motor pump
DE102015106611A1 (en) pump device
EP3368801A1 (en) Shaft sealing arrangement
DE102016209371A1 (en) screw pump

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20160927

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190319

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: F16J 15/36 20060101ALN20210429BHEP

Ipc: F16J 15/34 20060101ALN20210429BHEP

Ipc: F04D 29/66 20060101ALN20210429BHEP

Ipc: F04D 29/42 20060101ALN20210429BHEP

Ipc: F04D 13/06 20060101ALN20210429BHEP

Ipc: F04D 29/046 20060101ALN20210429BHEP

Ipc: F04D 29/16 20060101ALI20210429BHEP

Ipc: F04D 29/041 20060101AFI20210429BHEP

INTG Intention to grant announced

Effective date: 20210531

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1452013

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211215

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502014016016

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20211201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220301

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220302

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220401

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502014016016

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220401

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

26N No opposition filed

Effective date: 20220902

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502014016016

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20221031

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230503

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221008

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221008

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1452013

Country of ref document: AT

Kind code of ref document: T

Effective date: 20221008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20141008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211201