EP3374642B1 - Electric axial-flow liquid pump for motor vehicle - Google Patents

Electric axial-flow liquid pump for motor vehicle Download PDF

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Publication number
EP3374642B1
EP3374642B1 EP15794532.0A EP15794532A EP3374642B1 EP 3374642 B1 EP3374642 B1 EP 3374642B1 EP 15794532 A EP15794532 A EP 15794532A EP 3374642 B1 EP3374642 B1 EP 3374642B1
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EP
European Patent Office
Prior art keywords
axial
pump
rotor body
liquid
rotor
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Application number
EP15794532.0A
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German (de)
French (fr)
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EP3374642A1 (en
Inventor
Robin Wegener
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
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Pierburg Pump Technology GmbH
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Publication of EP3374642A1 publication Critical patent/EP3374642A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • 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
    • 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
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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
    • F04D29/18—Rotors
    • F04D29/181—Axial flow rotors
    • 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/528—Casings; Connections of working fluid for axial pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps

Definitions

  • the present invention relates to an electric motor vehicle axial liquid pump which is designed as an internal rotor.
  • the automotive electric axial fluid pump includes a pump housing that forms an axial inlet port and an axial outlet port for injecting and discharging the fluid, and an electric motor that drives an impeller.
  • an electric motor vehicle axial liquid pump in which an electric motor drives the impeller via a shaft.
  • a motor vehicle axial liquid pump is known, the electric motor being formed by the pump rotor on the one hand and a motor stator radially surrounding the latter.
  • JP 2002 138986 A discloses an axial flow fluid pump having a motor rotor with an integral pump-motor rotor formed of a plastic body in which permanent magnets for motor function are embedded and coated on the outside with a storable coating.
  • an axial liquid pump is known, the pump rotor of which also forms the motor rotor, which is surrounded by a ring-like motor stator.
  • the pump rotor is mounted in plain bearings at both of its longitudinal ends.
  • the object of the present invention is to create an electric motor vehicle axial liquid pump which is simpler in construction and therefore more economical to produce.
  • the electric motor has a can which is arranged radially inside the at least one stator coil.
  • the can separates a working space, in which the liquid to be pumped is located, from an electronics space.
  • the can can be part of a pump housing.
  • a rotor body is rotatably arranged inside the can, which has at least one blade and which conveys the liquid from an inlet opening of the electric motor vehicle axial liquid pump to an outlet opening.
  • the rotor body is designed to be permanent magnets.
  • the rotor body is thus rotor and impeller in a single component.
  • the configuration according to the present invention saves on further components, such as a shaft for driving a separate impeller.
  • the electric motor vehicle axial liquid pump can therefore be produced more quickly, easily and therefore more economically.
  • the rotor body is designed in one piece.
  • the arrangement of the rotor body and can with a liquid-filled gap between the outer peripheral surface of the rotor body and the inner peripheral surface of the can is understood as a slide bearing within the meaning of the present invention. No additional components are therefore required to rotatably mount the rotor body. As a result, further components can be saved and the electric motor vehicle axial liquid pump can be manufactured more quickly and more economically.
  • the rotor body has plastic-bonded permanent magnet particles. These permanent magnet particles are particularly preferably neodymium particles. Such rotor bodies are special can be produced inexpensively, so that the cost-effectiveness of a corresponding electric motor vehicle axial liquid pump can be increased. In addition, such a rotor body has a lower mass moment of inertia than an all-metal rotor, so that the efficiency of the electric motor vehicle axial liquid pump is improved.
  • the motor stator preferably has a plurality of external stator coils.
  • the motor stator which has the stator coils, is at least partially embedded in a plastic injection-molded body that forms the can.
  • the can is formed radially inside the stator coils.
  • the sliding bearing is preferably designed to be cylindrical and step-free over the entire axial length of the rotor body.
  • Such a plain bearing has the advantage that it is easy to produce. In addition, the assembly of such a plain bearing is simplified.
  • the rotor is designed in such a way that it has a plurality of blades and particularly preferably seven blades.
  • the number of blades can thus be chosen depending on the required hydraulic power of the pump.
  • the figure shows: an electric motor vehicle axial liquid pump in a perspective longitudinal section according to the present invention.
  • the figure shows an electric automotive axial fluid pump 10 according to the present invention, the drive motor is designed as an internal rotor.
  • the electric motor vehicle axial fluid pump 10 comprises a two-part pump housing 12 which forms an axial inlet opening 14 for admitting liquid into the electric motor vehicle axial fluid pump 10 .
  • the latter forms an axial outlet opening 16 for draining the liquid out of the electric motor vehicle axial liquid pump 10 .
  • the automotive electric axial fluid pump 10 further includes an electric motor 17 as a drive motor, which is provided in the pump housing 12 .
  • the electric motor 17 includes a motor stator 18 located inside the pump housing 12 and radially on the outside.
  • the energization of the stator coils 20 is controlled by an electronics unit 21 that is provided at an outlet end and is located radially on the outside.
  • the yoke body 19 of the motor stator 18 is embedded in a plastic injection-molded body radially inside the stator coils 20 , so that the plastic injection-molded body forms a can 22 .
  • the can 22 is in sealing contact with the pump housing 12 by means of an inlet-side ring seal 24 and an outlet-side ring seal 26 and fluidly separates a working chamber 28 , in which the liquid to be pumped is located, from an electronics chamber 30 .
  • a rotor body 32 designed as an axial impeller, of the electric motor 17 is arranged inside the can 22 , which conveys the liquid along an axis of rotation 33 of the rotor body 32 from the inlet opening 14 to the outlet opening 16 .
  • the rotor body 32 is formed from a hollow cylinder 34 and seven impeller blades 36 provided inside the hollow cylinder 34 and running in the axial direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

Die vorliegende Erfindung betrifft eine elektrische Kfz-Axial-Flüssigkeitspumpe die als Innenläufer ausgebildet ist.The present invention relates to an electric motor vehicle axial liquid pump which is designed as an internal rotor.

Die elektrische Kfz-Axial-Flüssigkeitspumpe umfasst ein Pumpengehäuse, welches eine axiale Einlassöffnung und eine axiale Auslassöffnung zum Ein- und Auslassen der Flüssigkeit ausbildet, und einen Elektromotor, der ein Flügelrad antreibt.The automotive electric axial fluid pump includes a pump housing that forms an axial inlet port and an axial outlet port for injecting and discharging the fluid, and an electric motor that drives an impeller.

Aus EP 2002123 B1 ist eine elektrische Kfz-Axial-Flüssigkeitspumpe bekannt, bei der ein Elektromotor über eine Welle das Flügelrad antreibt.the end EP 2002123 B1 an electric motor vehicle axial liquid pump is known in which an electric motor drives the impeller via a shaft.

Aus DE 202 02 027 U1 ist eine Kfz-Axial-Flüssigkeitpumpe bekannt, wobei der Elektromotor durch den Pumpenrotor einerseits und ein radial diesen umgebenden Motorstator gebildet ist.the end DE 202 02 027 U1 a motor vehicle axial liquid pump is known, the electric motor being formed by the pump rotor on the one hand and a motor stator radially surrounding the latter.

JP 2002 138986 A offenbart eine Axial-Flüssigkeitspumpe mit einem Motorrotor mit einem integralen Pumpen-Motor-Rotor, der aus einem Kunststoffkörper gebildet ist, in den Permanentmagnete für die Motorfunktion eingebettet sind und der außenseitig mit einer lagerfähigen Beschichtung beschichtet ist. JP 2002 138986 A discloses an axial flow fluid pump having a motor rotor with an integral pump-motor rotor formed of a plastic body in which permanent magnets for motor function are embedded and coated on the outside with a storable coating.

Aus DE 20 2012 010653 U1 ist eine Axial-Flüssigkeitspumpe bekannt, deren Pumpenrotor ebenfalls den Motorrotor bildet, der von einem ringartigen Motorstator umgeben ist. Der Pumpenrotor ist an seinen beiden Längsenden in Gleitlagern gelagert.the end DE 20 2012 010653 U1 an axial liquid pump is known, the pump rotor of which also forms the motor rotor, which is surrounded by a ring-like motor stator. The pump rotor is mounted in plain bearings at both of its longitudinal ends.

Die Aufgabe der vorliegenden Erfindung liegt darin, eine elektrische Kfz-Axial-Flüssigkeitspumpe zu schaffen, welche einfacher aufgebaut und daher wirtschaftlicher herstellbar ist.The object of the present invention is to create an electric motor vehicle axial liquid pump which is simpler in construction and therefore more economical to produce.

Diese Aufgabe wird durch eine elektrische Kfz-Axial-Flüssigkeitspumpe nach dem unabhängigen Anspruch 1 gelöst.This object is achieved by an electric motor vehicle axial liquid pump according to independent claim 1.

Bei der elektrischen Kfz-Axial-Flüssigkeitspumpe gemäß der vorliegenden Erfindung weist der Elektromotor ein Spaltrohr auf, welches radial innerhalb der mindestens einen Statorspule angeordnet ist. Das Spaltrohr trennt einen Arbeitsraum, in dem sich die zu fördernde Flüssigkeit befindet, von einem Elektronikraum. Das Spaltrohr kann Teil eines Pumpengehäuses sein. Innerhalb des Spaltrohres ist ein Rotorkörper drehbar angeordnet, welcher wenigstens ein Flügelblatt aufweist und welcher die Flüssigkeit von einer Einlassöffnung der elektrischen Kfz-Axial-Flüssigkeitspumpe zu einer Auslassöffnung fördert. Der Rotorkörper ist dabei permanentmagnetisch ausgebildet. Der Rotorkörper ist somit Rotor und Flügelrad in einem einzigen Bauteil. Durch die Ausgestaltung gemäß der vorliegenden Erfindung werden weitere Bauteile, wie eine Welle zum Antreiben eines separaten Flügelrades eingespart. Die elektrische Kfz-Axial-Flüssigkeitspumpe ist somit schneller, einfacher und damit wirtschaftlicher herstellbar.In the electric motor vehicle axial fluid pump according to the present invention, the electric motor has a can which is arranged radially inside the at least one stator coil. The can separates a working space, in which the liquid to be pumped is located, from an electronics space. The can can be part of a pump housing. A rotor body is rotatably arranged inside the can, which has at least one blade and which conveys the liquid from an inlet opening of the electric motor vehicle axial liquid pump to an outlet opening. The rotor body is designed to be permanent magnets. The rotor body is thus rotor and impeller in a single component. The configuration according to the present invention saves on further components, such as a shaft for driving a separate impeller. The electric motor vehicle axial liquid pump can therefore be produced more quickly, easily and therefore more economically.

Der Rotorkörper ist einstückig ausgebildet.The rotor body is designed in one piece.

Der Rotorkörper und das Spaltrohr bilden zusammen ein Gleitlager aus. Als Gleitlager im Sinne der vorliegenden Erfindung wird die Anordnung von Rotorkörper und Spaltrohr mit einem mit Flüssigkeit gefüllten Spalt zwischen der Außenumfangsfläche des Rotorkörpers und der Innenumfangsfläche des Spaltrohres verstanden. Es sind somit keine zusätzlichen Bauteile erforderlich, um den Rotorkörper drehbar zu lagern. Dadurch können weitere Bauteile eingespart und die elektrische Kfz-Axial-Flüssigkeitspumpe schneller und wirtschaftlicher hergestellt werden.The rotor body and the can together form a plain bearing. The arrangement of the rotor body and can with a liquid-filled gap between the outer peripheral surface of the rotor body and the inner peripheral surface of the can is understood as a slide bearing within the meaning of the present invention. No additional components are therefore required to rotatably mount the rotor body. As a result, further components can be saved and the electric motor vehicle axial liquid pump can be manufactured more quickly and more economically.

Der Rotorkörper weist kunststoffgebundene Permanentmagnet-Partikel auf. Besonders bevorzugt sind diese Permanentmagnet-Partikel Neodym-Partikel . Solche Rotorkörper sind besonders kostengünstig herstellbar, so dass sich die Wirtschaftlichkeit einer entsprechenden elektrischen Kfz-Axial-Flüssigkeitspumpe erhöhen lässt. Darüber hinaus hat ein solcher Rotorkörper ein geringeres Massenträgheitsmoment als ein Vollmetallrotor, so dass der Wirkungsgrad der elektrischen Kfz-Axial-Flüssigkeitspumpe verbessert wird.The rotor body has plastic-bonded permanent magnet particles. These permanent magnet particles are particularly preferably neodymium particles. Such rotor bodies are special can be produced inexpensively, so that the cost-effectiveness of a corresponding electric motor vehicle axial liquid pump can be increased. In addition, such a rotor body has a lower mass moment of inertia than an all-metal rotor, so that the efficiency of the electric motor vehicle axial liquid pump is improved.

Vorzugsweise weist der Motorstator mehrere außenliegende Statorspulen auf.The motor stator preferably has a plurality of external stator coils.

Gemäß einer bevorzugten Ausgestaltung der Erfindung ist der Motorstator, welcher die Statorspulen aufweist, mindestens teilweise in einem Kunststoffspritzkörper eingebettet, der das Spaltrohr bildet. Das Spaltrohr ist gemäß dieser Ausgestaltung radial innerhalb der Statorspulen ausgebildet. Dadurch kann ein als separates Bauteil vorgesehenes Spaltrohr eingespart werden und die elektrische Kfz-Axial-Flüssigkeitspumpe schneller und einfacher hergestellt werden.According to a preferred embodiment of the invention, the motor stator, which has the stator coils, is at least partially embedded in a plastic injection-molded body that forms the can. According to this configuration, the can is formed radially inside the stator coils. As a result, a can provided as a separate component can be saved and the electric motor vehicle axial liquid pump can be manufactured more quickly and easily.

Vorzugsweise ist das Gleitlager zylindrisch und stufenfrei über die gesamte axiale Länge des Rotorkörpers ausgebildet. Ein solches Gleitlager hat den Vorteil, dass es einfach herstellbar ist. Darüber hinaus ist auch die Montage eines solchen Gleitlagers vereinfacht.The sliding bearing is preferably designed to be cylindrical and step-free over the entire axial length of the rotor body. Such a plain bearing has the advantage that it is easy to produce. In addition, the assembly of such a plain bearing is simplified.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist der Rotor derart ausgestaltet, dass dieser mehrere Flügelblätter und besonders bevorzugt sieben Flügelblätter aufweist. Die Anzahl der Flügelblätter kann somit in Abhängigkeit von der geforderten hydraulischen Leistung der Pumpe gewählt werden.According to a preferred embodiment of the invention, the rotor is designed in such a way that it has a plurality of blades and particularly preferably seven blades. The number of blades can thus be chosen depending on the required hydraulic power of the pump.

Weitere Einzelheiten und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung des Ausführungsbeispiels in Verbindung mit der Zeichnung.Further details and advantages of the present invention result from the following description of the exemplary embodiment in conjunction with the drawing.

Die Figur zeigt: eine elektrische Kfz-Axial-Flüssigkeitspumpe im perspektivischen Längsschnitt nach der vorliegenden Erfindung.The figure shows: an electric motor vehicle axial liquid pump in a perspective longitudinal section according to the present invention.

Die Figur zeigt eine elektrische Kfz-Axial-Flüssigkeitspumpe 10 nach der vorliegenden Erfindung, deren Antriebsmotor als Innenläufer ausgebildet ist. Die elektrische Kfz-Axial-Flüssigkeitspumpe 10 umfasst ein zweiteiliges Pumpengehäuse 12, welches eine axiale Einlassöffnung 14 zum Einlassen von Flüssigkeit in die elektrische Kfz-Axial-Flüssigkeitspumpe 10 ausbildet. An einem zu der Einlassöffnung 14 axial gegenüberliegenden Längsende des Pumpengehäuses 12 bildet dieses eine axiale Auslassöffnung 16 zum Auslassen der Flüssigkeit aus der elektrischen Kfz-Axial-Flüssigkeitspumpe 10 aus.The figure shows an electric automotive axial fluid pump 10 according to the present invention, the drive motor is designed as an internal rotor. The electric motor vehicle axial fluid pump 10 comprises a two-part pump housing 12 which forms an axial inlet opening 14 for admitting liquid into the electric motor vehicle axial fluid pump 10 . At a longitudinal end of the pump housing 12 that is axially opposite to the inlet opening 14 , the latter forms an axial outlet opening 16 for draining the liquid out of the electric motor vehicle axial liquid pump 10 .

Die elektrische Kfz-Axial-Flüssigkeitspumpe 10 umfasst weiter einen Elektromotor 17 als Antriebsmotor, welcher in dem Pumpengehäuse 12 vorgesehen ist. Der Elektromotor 17 umfasst einen innerhalb des Pumpengehäuses 12 und radial außenliegenden Motorstator 18. Der Motorstator 18 weist einen Rückschlußkörper 19 und Statorspulen 20 auf. Die Bestromung der Statorspulen 20 wird gesteuert durch eine an einem auslassseitigen Ende vorgesehene und radial außenliegende Elektronikeinheit 21.The automotive electric axial fluid pump 10 further includes an electric motor 17 as a drive motor, which is provided in the pump housing 12 . The electric motor 17 includes a motor stator 18 located inside the pump housing 12 and radially on the outside. The energization of the stator coils 20 is controlled by an electronics unit 21 that is provided at an outlet end and is located radially on the outside.

Radial innerhalb der Statorspulen 20 ist der Rückschlußkörper 19 des Motorstators 18 in einen Kunststoffspritzkörper eingebettet, so dass der Kunststoffspritzkörper ein Spaltrohr 22 ausbildet. Das Spaltrohr 22 liegt mittels einer einlassseitigen Ringdichtung 24 und einer auslassseitigen Ringdichtung 26 dichtend an dem Pumpengehäuse 12 an und trennt einen Arbeitsraum 28, in dem sich die zu fördernde Flüssigkeit befindet, fluidisch von einem Elektronikraum 30 ab. Innerhalb des Spaltrohres 22 ist ein als Axial-Flügelrad ausgebildeter Rotorkörper 32 des Elektromotors 17 angeordnet, welcher die Flüssigkeit entlang einer Drehachse 33 des Rotorkörpers 32 von der Einlassöffnung 14 zu der Auslassöffnung 16 fördert. Der Rotorkörper 32 ist gebildet aus einem Hohlzylinder 34 und sieben innerhalb des Hohlzylinders 34 vorgesehenen und in axialer Richtung verlaufenden Flügelblättern 36.The yoke body 19 of the motor stator 18 is embedded in a plastic injection-molded body radially inside the stator coils 20 , so that the plastic injection-molded body forms a can 22 . The can 22 is in sealing contact with the pump housing 12 by means of an inlet-side ring seal 24 and an outlet-side ring seal 26 and fluidly separates a working chamber 28 , in which the liquid to be pumped is located, from an electronics chamber 30 . A rotor body 32 , designed as an axial impeller, of the electric motor 17 is arranged inside the can 22 , which conveys the liquid along an axis of rotation 33 of the rotor body 32 from the inlet opening 14 to the outlet opening 16 . The rotor body 32 is formed from a hollow cylinder 34 and seven impeller blades 36 provided inside the hollow cylinder 34 and running in the axial direction.

BezugszeichenlisteReference List

1010
elektrische Kfz-Axial-Flüssigkeitspumpeelectric automotive axial fluid pump
1212
Pumpengehäusepump housing
1414
axiale Einlassöffnungaxial inlet port
1616
axiale Auslassöffnungaxial outlet port
1717
Elektromotorelectric motor
1818
Motorstatormotor stator
1919
Rückschlußkörperreturn body
2020
Statorspulenstator coils
2121
Elektronikeinheitelectronics unit
2222
Spaltrohrcracking tube
2424
einlassseitige Ringdichtunginlet ring seal
2626
auslassseitige Ringdichtungoutlet ring seal
2828
Arbeitsraumworking space
3030
Elektronikraumelectronics room
3232
Rotorkörperrotor body
3333
Drehachseaxis of rotation
3434
Hohlzylinderhollow cylinder
3636
Flügelblattwing blade

Claims (4)

  1. An electric vehicle-axial-flow-liquid-pump (10) designed as an internal rotor pump, comprising:
    - a pump housing (12) which defines an axial inlet opening (14) and an axial outlet opening (16) for letting in and discharging the liquid,
    - an electric motor (17) which is provided in said pump housing (12) and includes:
    - a motor stator (18) with at least one external stator coil (20), and
    - a separation can (22) which is provided radially inside said stator coils (20), and
    - a rotor body (32) configured as an axial-flow impeller which is rotatably arranged inside said can (22), wherein
    said rotor body (32) has at least one blade (36) which delivers the liquid from the inlet opening (14) to the outlet opening (16) along the axis of rotation (33) of said rotor body (32),
    said rotor body (32) is of permanently magnetic design and includes plastic-bonded permanent-magnet particles and/or ferrite particles, the rotor body (32) and the separation can (22) together define a slide bearing, and
    the rotor body (32) is integrally formed.
  2. The electric vehicle-axial-flow-liquid-pump (10) according to claim 1, wherein the motor stator (18) includes a plurality of external stator coils (20).
  3. The electric vehicle axial-flow-liquid-pump (10) according to any one of the preceding claims, wherein the motor stator (18) is at least partially embedded in a plastic injection-molded body which defines the separation can (22).
  4. The electric vehicle-axial-flow-liquid-pump (10) according to any one of the preceding claims, wherein the rotor body (32) includes a plurality of blades (36).
EP15794532.0A 2015-11-10 2015-11-10 Electric axial-flow liquid pump for motor vehicle Active EP3374642B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/076243 WO2017080591A1 (en) 2015-11-10 2015-11-10 Electric motor vehicle axial-flow liquid pump

Publications (2)

Publication Number Publication Date
EP3374642A1 EP3374642A1 (en) 2018-09-19
EP3374642B1 true EP3374642B1 (en) 2022-03-02

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US (1) US10941781B2 (en)
EP (1) EP3374642B1 (en)
JP (1) JP7309361B2 (en)
CN (1) CN108350885A (en)
WO (1) WO2017080591A1 (en)

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JP7309361B2 (en) 2023-07-18
US20180313354A1 (en) 2018-11-01
US10941781B2 (en) 2021-03-09
WO2017080591A1 (en) 2017-05-18
CN108350885A (en) 2018-07-31
EP3374642A1 (en) 2018-09-19
JP2018534473A (en) 2018-11-22

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