EP1333180A1 - Electric motor driven pump - Google Patents

Electric motor driven pump Download PDF

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Publication number
EP1333180A1
EP1333180A1 EP02028593A EP02028593A EP1333180A1 EP 1333180 A1 EP1333180 A1 EP 1333180A1 EP 02028593 A EP02028593 A EP 02028593A EP 02028593 A EP02028593 A EP 02028593A EP 1333180 A1 EP1333180 A1 EP 1333180A1
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EP
European Patent Office
Prior art keywords
pump
electric motor
pump according
magnetic ring
stator
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.)
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Application number
EP02028593A
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German (de)
French (fr)
Inventor
Eckhart Kern
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Siemens AG
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Siemens AG
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Publication of EP1333180A1 publication Critical patent/EP1333180A1/en
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    • 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

Definitions

  • the invention is concerned with an electrically driven Pump with a disc rotor Electric motor.
  • the object of the present invention is a to create an electrically powered pump with minimal axial length is easy to assemble.
  • the task is carried out electrically driven pump of the type described solved at which is a magnetic ring of the disc rotor on the pump wheel is arranged.
  • the solution according to the invention has the advantage that the integrated design of the pump impeller with the Motor rotor creates a single rotating part that in one Process can be balanced and thereby become a Contribution to cost reduction. Thanks to the integrated design is also a significant reduction in the axial length of the Unit possible, especially since no additional flange parts are required, which also further costs cause. As a further advantage of the invention electrically driven pump is the possible Weight saving to mention, especially when using is advantageous in the automotive field.
  • the magnetic ring in one of fluid flow area is arranged.
  • the number of parts and the assembly costs can be reduced.
  • the unnecessary seal also avoids the frictional losses caused by the sealing elements for example in the case of a mechanical seal, as in a dry runner is often intended to be significant can.
  • the magnetic ring of the designed as a disc rotor electric motor its possible rotationally symmetrical disc shape none Splash losses caused by conventional wet runners with the rotors of the electric motor flowing around Loss of efficiency.
  • stator of the electric motor is outside of that of fluid flow area of the pump is arranged, for example outside of the pump housing or in one separate area from which the fluid flows sealed chamber, preferably also a control and / or power electronics for the electric motor in one such chamber can be arranged.
  • a control and / or power electronics for the electric motor in one such chamber can be arranged.
  • the electrically driven pump as Radial pump is formed with a radial wheel on the Rear of the magnetic ring is arranged.
  • the insignificant Axial length of the magnetic ring leads to such Embodiment to a minimum axial length of the Radial wheel of the pump, the stator and optionally the electronics axially save space in the area anyway necessary bearing elements of the pump wheel in the already addressed chamber radially outside the storage space can find.
  • the pump is preferably further provided that the Magnet ring and the adjacent housing wall as hydrodynamic plain bearing for absorbing axial forces are trained.
  • this particularly simple Embodiment serves the inevitably existing magnetic gap as a plain bearing, a particularly space-saving hydrodynamic thrust bearing is created without additional parts get along during assembly.
  • the shaft of the pump wheel in the housing hydrodynamic plain bearings to absorb the radial forces be stored.
  • the thrust bearing it is also conceivable Magnetic bearing to absorb the axial forces in the electric motor to integrate.
  • the electrically driven pump according to the invention can basically used in a wide variety of applications come and accordingly as a water pump, air conditioning compressor, Petrol pump or hydraulic oil pump can be designed, where themselves due to their short axial length and their low number of parts especially for use in Suitable for motor vehicles. Especially with water pumps So far it has been common to mechanically use the V-belt or drive a toothed belt.
  • the pump according to the invention has a comparable axial length of one conventional water pump with a pulley while known electrically powered water pumps in Motor vehicle area conventional with flanged Electric motor are designed and corresponding to the input have mentioned disadvantages.
  • the picture shows an electrically driven water pump 10 for use in the automotive field.
  • the water pump 10 has a pump housing 12, one rotatable in the housing 12 mounted pump wheel 14, which is designed as a radial wheel, and an electric disc rotor Drive motor 16.
  • the radial outlet 18 of the pump is located between the axial suction side 20 and the drive motor 16.
  • it is designed as a disc rotor Electric motor 16 has a magnetic ring 22 which is immediate formed on the substantially as a radial surface Rear 24 of the pump wheel 14 is arranged. by virtue of this arrangement serves as the impeller 14 Motor rotor and forms a compact unit in one Operation can be balanced.
  • the disc-like Formation of the magnetic ring 22 avoids splash losses, such as they would be created by a separate motor rotor.
  • the pump works as a wet rotor and it is no shaft seal between twisted relative to each other Components necessary, the friction losses and costs would cause.
  • the sealing of the entire unit will achieved only by sealing the housing 12 what is permanently possible without any problems.
  • the stator 26 of the disc rotor 16 is seated in one of them flowed area sealed chamber 28 on the Back of the impeller 14 is annular.
  • a Intermediate wall 30 of the pump housing 12 with a radial Extension separates the fluid area from the chamber 28.
  • the chamber 28 also takes a drive and Power electronics 32 for the electric motor 16.
  • the Chamber 28 extends in a ring around a storage area 34 of the housing, being between a shaft 36 of the impeller 14 and one forming the bearing area 34 of the housing 12 annular axial wall rolling or preferably plain bearings 38 are provided to absorb the radial forces.
  • the magnetic ring 24 and the adjacent partition 30 in such a way formed that a hydrodynamic in the magnetic gap Plain bearing arises that the axial forces of the impeller 14th supported extensively on the intermediate wall 30 of the housing 12.
  • a magnetic bearing for absorbing the axial forces is conceivable the electric motor 16 is integrated.
  • an electrical driven water pump can the pump concept shown with an electric motor designed as a disc rotor too used in other pumps, for example in an air conditioning compressor, a petrol pump or an oil pump, for example for the hydraulic oil of a servo pump or at an electro-hydraulic brake.
  • an electric motor designed as a disc rotor too used in other pumps, for example in an air conditioning compressor, a petrol pump or an oil pump, for example for the hydraulic oil of a servo pump or at an electro-hydraulic brake.
  • the presented concept of an integrated unit Motor rotor and impeller can also be used Use turbines, the magnetic ring accordingly a suitable location of a turbine wheel and interacts with the fixed stator of a generator. In such an application, the same advantages as with an electrically driven Pump.

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

Abstract

The device (10) has an electric motor (16) in the form of a disk rotor with a magnetic ring (22) mounted on the pump wheel (14). The magnetic ring is arranged in a region through which a fluid flows and the stator (26) of the electric motor is arranged outside the fluid-carrying region. The stator can be mounted outside the pump housing.

Description

Die Erfindung befaßt sich mit einer elektrisch angetriebenen Pumpe mit einem als Scheibenläufer ausgebildeten Elektromotor.The invention is concerned with an electrically driven Pump with a disc rotor Electric motor.

Bei bekannten Kombinationen von Pumpen mit angeflanschtem Elektroantrieb ergibt sich eine große axiale Baulänge, die bei bestimmten Einsatzgebieten, beispielsweise in Kraftfahrzeugen, Probleme verursacht. Bekannt ist zwar der Einsatz von Scheibenläufern bei Wasserpumpen mit geringer Pumpenleistung, um die axiale Baulänge zu verringern, was in vielen Anwendungsfällen jedoch nicht ausreichend ist. Da die Motoren und die Pumpenräder getrennt gewuchtet werden müssen, werden die ohnehin höheren Montagekosten weiter angehoben.In known combinations of pumps with flanged Electric drive results in a large axial length in certain areas of application, for example in Motor vehicles, causing problems. The is known Use of disc rotors in water pumps with low Pump capacity to reduce the axial length, which in However, many applications are not sufficient. Since the Motors and the pump wheels must be balanced separately the already higher assembly costs will be increased further.

Die Aufgabe der vorliegenden Erfindung besteht darin, eine elektrisch angetriebene Pumpe zu schaffen, die bei minimaler axialer Baulänge einfach zu montieren ist.The object of the present invention is a to create an electrically powered pump with minimal axial length is easy to assemble.

Erfindungsgemäß wird die Aufgabe durch eine elektrisch angetriebene Pumpe der eingangs beschriebenen Art gelöst, bei welcher ein Magnetring des Scheibenläufers an dem Pumpenrad angeordnet ist.According to the invention, the task is carried out electrically driven pump of the type described solved at which is a magnetic ring of the disc rotor on the pump wheel is arranged.

Die erfindungsgemäße Lösung bietet den Vorteil, dass durch die integrierte Ausführung des Pumpenlaufrades mit dem Motorläufer ein einziges Rotationsteil entsteht, das in einem Vorgang ausgewuchtet werden kann und dadurch zu einer Kostenminderung beiträgt. Durch die integrierte Ausführung ist ferner eine erhebliche Reduktion der axialen Baulänge der Einheit möglich, zumal auch keine zusätzlichen Flanschteile erforderlich sind, die im übrigen zudem weitere Kosten verursachen. Als weiterer Vorteil der erfindungsgemäßen elektrisch angetriebenen Pumpe ist die mögliche Gewichtsersparnis zu nennen, die insbesondere bei Verwendung im Kraftfahrzeugbereich von Vorteil ist.The solution according to the invention has the advantage that the integrated design of the pump impeller with the Motor rotor creates a single rotating part that in one Process can be balanced and thereby become a Contribution to cost reduction. Thanks to the integrated design is also a significant reduction in the axial length of the Unit possible, especially since no additional flange parts are required, which also further costs cause. As a further advantage of the invention electrically driven pump is the possible Weight saving to mention, especially when using is advantageous in the automotive field.

Bei einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass der Magnetring in einem von Fluid durchströmten Bereich angeordnet ist. Bei einer derartigen Ausbildung der elektrisch angetriebenen Pumpe als Naßläufer kann auf die Abdichtung der drehenden Welle verzichtet werden, wodurch die Teileanzahl und die Montagekosten weiter verringert werden können. Die nicht erforderliche Dichtung vermeidet auch die Reibverluste durch die Dichtelemente, die beispielsweise im Falle einer Gleitringdichtung, wie sie bei einem Trockenläufer oftmals vorgesehen ist, erheblich sein können. Besonders vorteilhaft ist, dass der Magnetring des als Scheibenläufer ausgebildeten Elektromotors aufgrund seiner möglichen rotationssymmetrischen Scheibenform keine Panschverluste verursacht, die bei herkömmlichen Naßläufern mit umströmten Rotoren des Elektromotors zu erheblichen Wirkungsgradverlusten führen.In a preferred embodiment of the invention provided that the magnetic ring in one of fluid flow area is arranged. With such a Training of the electrically driven pump as a wet rotor there is no need to seal the rotating shaft the number of parts and the assembly costs can be reduced. The unnecessary seal also avoids the frictional losses caused by the sealing elements for example in the case of a mechanical seal, as in a dry runner is often intended to be significant can. It is particularly advantageous that the magnetic ring of the designed as a disc rotor electric motor its possible rotationally symmetrical disc shape none Splash losses caused by conventional wet runners with the rotors of the electric motor flowing around Loss of efficiency.

In einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass der Stator des Elektromotors außerhalb des von Fluid durchströmten Bereichs der Pumpe angeordnet ist, beispielsweise außerhalb des Pumpengehäuses oder in einer separaten, von dem von Fluid durchströmten Bereich abgedichteten Kammer, wobei vorzugsweise auch eine Ansteuer- und/oder Leistungselektronik für den Elektromotor in einer solchen Kammer angeordnet sein kann. Bei einer solchen Anordnung können die stromführenden Teile sicher von den Fluidbereichen getrennt werden, da die hierzu notwendigen Gehäusedichtungen einfach und dauerhaft sind. In a further preferred embodiment, that the stator of the electric motor is outside of that of fluid flow area of the pump is arranged, for example outside of the pump housing or in one separate area from which the fluid flows sealed chamber, preferably also a control and / or power electronics for the electric motor in one such chamber can be arranged. With one Arrangement can keep the live parts safe from the Fluid areas are separated because the necessary Housing seals are simple and durable.

Bei einer besonders bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die elektrisch angetriebene Pumpe als Radialpumpe mit einem Radialrad ausgebildet ist, an dessen Rückseite der Magnetring angeordnet ist. Die unerhebliche Axiallänge des Magnetrings führt bei einer solchen Ausführungsform zu einer minimalen axialen Baulänge des Radialrades der Pumpe, wobei der Stator und gegebenenfalls die Elektronik axial raumsparend im Bereich der ohnehin notwendigen Lagerelemente des Pumpenrades in der bereits angesprochenen Kammer radial außerhalb der Lagerung Platz finden können.In a particularly preferred embodiment of the invention it is envisaged that the electrically driven pump as Radial pump is formed with a radial wheel on the Rear of the magnetic ring is arranged. The insignificant Axial length of the magnetic ring leads to such Embodiment to a minimum axial length of the Radial wheel of the pump, the stator and optionally the electronics axially save space in the area anyway necessary bearing elements of the pump wheel in the already addressed chamber radially outside the storage space can find.

Im Sinne einer besonders einfachen konstruktiven Ausführung der Pumpe ist vorzugsweise weiterhin vorgesehen, dass der Magnetring und die benachbarte Gehäusewand als hydrodynamisches Gleitlager zur Aufnahme von Axialkräften ausgebildet sind. Bei dieser besonders einfachen Ausführungsform dient der zwangsläufig vorhandene Magnetspalt als Gleitlager, wobei ein besonders raumsparendes hydrodynamisches Axiallager geschaffen wird, das ohne zusätzliche Teile bei der Montage auskommt. Vorzugsweise kann auch die Welle des Pumpenrades in dem Gehäuse mit hydrodynamischen Gleitlagern zur Aufnahme der Radialkräfte gelagert sein. Alternativ zu einer hydrodynamischen Ausbildung des Axiallagers ist es auch denkbar, ein Magnetlager zur Aufnahme der Axialkräfte in den Elektromotor zu integrieren.In the sense of a particularly simple design the pump is preferably further provided that the Magnet ring and the adjacent housing wall as hydrodynamic plain bearing for absorbing axial forces are trained. In this particularly simple Embodiment serves the inevitably existing magnetic gap as a plain bearing, a particularly space-saving hydrodynamic thrust bearing is created without additional parts get along during assembly. Preferably can also the shaft of the pump wheel in the housing hydrodynamic plain bearings to absorb the radial forces be stored. As an alternative to a hydrodynamic Training the thrust bearing, it is also conceivable Magnetic bearing to absorb the axial forces in the electric motor to integrate.

Die erfindungsgemäße elektrisch angetriebene Pumpe kann grundsätzlich bei den verschiedensten Anwendungen zum Einsatz kommen und entsprechend als Wasserpumpe, Klimakompressor, Benzinpumpe oder Hydraulikölpumpe ausgebildet sein, wobei sie sich aufgrund ihrer kurzen axialen Baulänge und ihrer geringen Teilezahl insbesondere für den Einsatz im Kraftfahrzeugbereich eignet. Insbesondere bei Wasserpumpen ist es bislang üblich, diese mechanisch mit dem Keilriemen oder Zahnriemen anzutreiben. Die erfindungsgemäße Pumpe besitzt dabei eine vergleichbare axiale Baulänge einer herkömmlichen Wasserpumpe mit einer Riemenscheibe, während bekannte elektrisch angetriebene Wasserpumpen im Kraftfahrzeugbereich konventionell mit angeflanschtem Elektromotor ausgebildet sind und entsprechend die eingangs erwähnten Nachteile aufweisen.The electrically driven pump according to the invention can basically used in a wide variety of applications come and accordingly as a water pump, air conditioning compressor, Petrol pump or hydraulic oil pump can be designed, where themselves due to their short axial length and their low number of parts especially for use in Suitable for motor vehicles. Especially with water pumps So far it has been common to mechanically use the V-belt or drive a toothed belt. The pump according to the invention has a comparable axial length of one conventional water pump with a pulley while known electrically powered water pumps in Motor vehicle area conventional with flanged Electric motor are designed and corresponding to the input have mentioned disadvantages.

Nachfolgend wird anhand der beigefügten Zeichnung näher auf ein Ausführungsbeispiel der Erfindung eingegangen.Below is based on the attached drawing received an embodiment of the invention.

Die Abbildung zeigt eine elektrisch angetriebene Wasserpumpe 10 zum Einsatz im Kraftfahrzeugbereich. Die Wasserpumpe 10 besitzt ein Pumpengehäuse 12, ein in dem Gehäuse 12 drehbar gelagertes Pumpenrad 14, das als Radialrad ausgebildet ist, sowie einen als Scheibenläufer ausgebildeten elektrischen Antriebsmotor 16. Der Radialaustritt 18 der Pumpe liegt zwischen der axialen Saugseite 20 und dem Antriebsmotor 16. Der, wie bereits erwähnt, als Scheibenläufer ausgebildete Elektromotor 16 besitzt einen Magnetring 22, der unmittelbar auf der im wesentlichen als Radialfläche ausgebildeten Rückseite 24 des Pumpenrades 14 angeordnet ist. Aufgrund dieser Anordnung dient das Pumpenrad 14 gleichzeitig als Motorläufer und bildet eine kompakte Einheit, die in einem Vorgang ausgewuchtet werden kann. Die scheibenartige Ausbildung des Magnetringes 22 vermeidet Panschverluste, wie sie durch einen separaten Motorläufer entstehen würden. Da der Magnetring in dem von Fluid durchströmten Bereich angeordnet ist, arbeitet die Pumpe als Naßläufer und es ist keine Wellendichtung zwischen relativ zueinander verdrehten Bauteilen notwendig, die Reibungsverluste und Kosten verursachen würde. Die Abdichtung der gesamten Einheit wird allein durch die Abdichtung des Gehäuses 12 erreicht, was problemlos dauerhaft möglich ist. The picture shows an electrically driven water pump 10 for use in the automotive field. The water pump 10 has a pump housing 12, one rotatable in the housing 12 mounted pump wheel 14, which is designed as a radial wheel, and an electric disc rotor Drive motor 16. The radial outlet 18 of the pump is located between the axial suction side 20 and the drive motor 16. As already mentioned, it is designed as a disc rotor Electric motor 16 has a magnetic ring 22 which is immediate formed on the substantially as a radial surface Rear 24 of the pump wheel 14 is arranged. by virtue of this arrangement serves as the impeller 14 Motor rotor and forms a compact unit in one Operation can be balanced. The disc-like Formation of the magnetic ring 22 avoids splash losses, such as they would be created by a separate motor rotor. There the magnetic ring in the area through which fluid flows is arranged, the pump works as a wet rotor and it is no shaft seal between twisted relative to each other Components necessary, the friction losses and costs would cause. The sealing of the entire unit will achieved only by sealing the housing 12 what is permanently possible without any problems.

Der Stator 26 des Scheibenläufers 16 sitzt in einer von dem durchströmten Bereich abgedichteten Kammer 28, die auf der Rückseite des Pumpenrades 14 ringförmig ausgebildet ist. Eine Zwischenwand 30 des Pumpengehäuses 12 mit radialer Erstreckung trennt dabei den Fluidbereich von der Kammer 28. Die Kammer 28 nimmt ferner eine Ansteuer- und Leistungselektronik 32 für den Elektromotor 16 auf. Die Kammer 28 erstreckt sich ringförmig um einen Lagerbereich 34 des Gehäuses, wobei zwischen einer Welle 36 des Pumpenrades 14 und einer den Lagerbereich 34 des Gehäuses 12 bildenden ringförmigen Axialwandung Wälz- oder vorzugsweise Gleitlager 38 zur Aufnahme der Radialkräfte vorgesehen sind. Zur Vermeidung von Axiallagern mit hohem axialen Platzbedarf sind der Magnetring 24 und die benachbarten Zwischenwand 30 derart ausgebildet, dass in dem Magnetspalt ein hydrodynamisches Gleitlager entsteht, das die Axialkräfte des Pumpenrades 14 großflächig an der Zwischenwand 30 des Gehäuses 12 abstützt. Alternativ ist anstelle eines hydrodynamischen Gleitlagers ein Magnetlager zur Aufnahme der Axialkräfte denkbar, das in den Elektromotor 16 integriert ist.The stator 26 of the disc rotor 16 is seated in one of them flowed area sealed chamber 28 on the Back of the impeller 14 is annular. A Intermediate wall 30 of the pump housing 12 with a radial Extension separates the fluid area from the chamber 28. The chamber 28 also takes a drive and Power electronics 32 for the electric motor 16. The Chamber 28 extends in a ring around a storage area 34 of the housing, being between a shaft 36 of the impeller 14 and one forming the bearing area 34 of the housing 12 annular axial wall rolling or preferably plain bearings 38 are provided to absorb the radial forces. to Avoid axial bearings with a high axial space requirement the magnetic ring 24 and the adjacent partition 30 in such a way formed that a hydrodynamic in the magnetic gap Plain bearing arises that the axial forces of the impeller 14th supported extensively on the intermediate wall 30 of the housing 12. Alternatively, instead of a hydrodynamic plain bearing a magnetic bearing for absorbing the axial forces is conceivable the electric motor 16 is integrated.

Neben dem gezeigten Ausführungsbeispiel einer elektrisch angetriebenen Wasserpumpe kann das dargestellte Pumpenkonzept mit einem als Scheibenläufer ausgebildeten Elektromotor auch bei anderen Pumpen Verwendung finden, beispielsweise bei einem Klimakompressor, einer Benzinpumpe oder einer Ölpumpe, beispielsweise für das Hydrauliköl einer Servopumpe oder bei einer elektro-hydraulischen Bremse. Aufgrund der sehr platzsparenden geringen axialen Baulänge ist die dargestellte Pumpe besonders für den Einsatz in Kraftfahrzeugen geeignet, jedoch sind auch andere Anwendungsfälle denkbar. Das dargestellte Konzept einer integrierten Einheit aus Motorläufer und Laufrad läßt sich grundsätzlich auch bei Turbinen einsetzen, wobei der Magnetring entsprechend an einer geeigneten Stelle eines Turbinenrades sitzen kann und mit dem feststehenden Stator eines Generators zusammenwirkt. In einem solchen Anwendungsfall gelten grundsätzlich die gleichen Vorteile wie bei einer elektrisch angetriebenen Pumpe.In addition to the embodiment shown, an electrical driven water pump can the pump concept shown with an electric motor designed as a disc rotor too used in other pumps, for example in an air conditioning compressor, a petrol pump or an oil pump, for example for the hydraulic oil of a servo pump or at an electro-hydraulic brake. Because of the very space-saving small axial length is the one shown Pump particularly suitable for use in motor vehicles, however, other applications are also conceivable. The presented concept of an integrated unit Motor rotor and impeller can also be used Use turbines, the magnetic ring accordingly a suitable location of a turbine wheel and interacts with the fixed stator of a generator. In such an application, the same advantages as with an electrically driven Pump.

Claims (11)

Elektrisch angetriebene Pumpe (10) mit einem als Scheibenläufer ausgebildeten Elektromotor (16), dadurch gekennzeichnet, dass ein Magnetring (22) des Scheibenläufers an dem Pumpenrad (14) angeordnet ist.Electrically driven pump (10) with an electric motor (16) designed as a disk rotor, characterized in that a magnetic ring (22) of the disk rotor is arranged on the pump wheel (14). Pumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Magnetring (22) in einem von Fluid durchströmten Bereich angeordnet ist.Pump according to claim 1, characterized in that the magnetic ring (22) is arranged in a region through which fluid flows. Pumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stator (26) des Elektromotors (16) außerhalb des von Fluid durchströmten Bereiches der Pumpe (10) angeordnet ist.Pump according to Claim 1 or 2, characterized in that the stator (26) of the electric motor (16) is arranged outside the region of the pump (10) through which fluid flows. Pumpe nach Anspruch 3, dadurch gekennzeichnet, dass der Stator (26) außerhalb des Pumpengehäuses angeordnet ist.Pump according to claim 3, characterized in that the stator (26) is arranged outside the pump housing. Pumpe nach Anspruch 3, dadurch gekennzeichnet, dass der Stator (26) in einer separaten, von dem von Fluid durchströmten Bereich abgedichteten Kammer (28) angeordnet ist.Pump according to Claim 3, characterized in that the stator (26) is arranged in a separate chamber (28) which is sealed off from the area through which fluid flows. Pumpe nach Anspruch 5, dadurch gekennzeichnet, dass eine Ansteuer- und/oder Leistungselektronik für den Elektromotor (16) in der Kammer (28) angeordnet ist.Pump according to claim 5, characterized in that a control and / or power electronics for the electric motor (16) is arranged in the chamber (28). Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie als Radialpumpe mit einem Radialrad (14) ausgebildet ist, an dessen Rückseite der Magnetring (14) ausgebildet ist. Pump according to one of the preceding claims, characterized in that it is designed as a radial pump with a radial wheel (14), on the rear side of which the magnetic ring (14) is formed. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Magnetring (22) und die benachbarte Gehäusewand (30) als hydrodynamisches Gleitlager zum Aufnehmen von Axialkräften ausgebildet sind.Pump according to one of the preceding claims, characterized in that the magnetic ring (22) and the adjacent housing wall (30) are designed as hydrodynamic plain bearings for absorbing axial forces. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Magnetlager zur Aufnahme der Axialkräfte in dem Elektromotor (16) integriert ist.Pump according to one of the preceding claims, characterized in that a magnetic bearing for absorbing the axial forces is integrated in the electric motor (16). Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Pumpenrad (14) mit Gleitlagern (38) zur Aufnahme von Radialkräften in dem Pumpengehäuse (12, 34) gelagert ist.Pump according to one of the preceding claims, characterized in that the pump wheel (14) is mounted with slide bearings (38) for absorbing radial forces in the pump housing (12, 34). Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie als Wasserpumpe (10), Klimakompressor, Benzinpumpe oder Ölpumpe vorzugsweise für den Einsatz in Kraftfahrzeugen ausgebildet ist.Pump according to one of the preceding claims, characterized in that it is preferably designed as a water pump (10), air conditioning compressor, gasoline pump or oil pump for use in motor vehicles.
EP02028593A 2002-01-30 2002-12-20 Electric motor driven pump Withdrawn EP1333180A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10203778A DE10203778A1 (en) 2002-01-30 2002-01-30 Electrically driven pump, e.g. for motor vehicles, has electric motor in form of disk rotor with magnetic ring mounted on pump wheel in region through which fluid flows
DE10203778 2002-01-30

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EP1333180A1 true EP1333180A1 (en) 2003-08-06

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EP02028593A Withdrawn EP1333180A1 (en) 2002-01-30 2002-12-20 Electric motor driven pump

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US (1) US20030161745A1 (en)
EP (1) EP1333180A1 (en)
DE (1) DE10203778A1 (en)

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DE102005015213A1 (en) * 2005-04-02 2006-10-05 Pierburg Gmbh 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
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