EP1526284A2 - Electrical driving apparatus - Google Patents

Electrical driving apparatus Download PDF

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Publication number
EP1526284A2
EP1526284A2 EP04450092A EP04450092A EP1526284A2 EP 1526284 A2 EP1526284 A2 EP 1526284A2 EP 04450092 A EP04450092 A EP 04450092A EP 04450092 A EP04450092 A EP 04450092A EP 1526284 A2 EP1526284 A2 EP 1526284A2
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EP
European Patent Office
Prior art keywords
commutator
drive device
rotor
winding part
brush holder
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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
EP04450092A
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German (de)
French (fr)
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EP1526284B1 (en
EP1526284A3 (en
Inventor
Friedrich Atschreiter
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TCG Unitech Systemtechnik GmbH
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TCG Unitech Systemtechnik GmbH
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Priority to AT04450092T priority Critical patent/ATE343065T1/en
Publication of EP1526284A2 publication Critical patent/EP1526284A2/en
Publication of EP1526284A3 publication Critical patent/EP1526284A3/en
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Publication of EP1526284B1 publication Critical patent/EP1526284B1/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
    • F04D13/0606—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
    • F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type

Definitions

  • the invention relates to an electric drive device for a runner, in particular for a rotatably mounted pump impeller of a centrifugal pump, with a the rotating part containing wet area and one of this separate drying area.
  • a pump impeller containing Wet area usually by sealing elements, such as mechanical seals or the like of an electric drive-containing Dry area separated.
  • sealing elements such as mechanical seals or the like of an electric drive-containing Dry area separated.
  • inside-out motors are known in which an outer Rotor is arranged around an inner stator.
  • Inside-out engines are for example by the documents US 5,986,379 A, US 6,239,532 B1 and No. 6,286,199 B1, and are usually commutated electronically Electric motors executed.
  • DE 196 27 854 A1 shows a pump motor with stator magnet system, the from the rotor magnet system located in the wet area by a sealing Membrane is separated.
  • the device further comprises a commutator ring and two collector brushes each in a brush holder, which is rotatably mounted and is driven by the magnetic force from the rotor.
  • JP 63-154037 A shows a pump motor in Axialspaltaus Replacement, in the the wet area of the dry area via one of the Statorjochanowski associated Disc is separated.
  • US 3,870,914 A shows a pump motor with rotating brush arrangement, in which the brush drive via a rotor with another fixed Commutator is operable.
  • this is achieved in that at least one fixed, an electromagnetic rotating field generating winding part of the wet area separates from the dry area, wherein the windings of the winding part with a Commutator are conductively connected, and that the rotatable component at least on a side facing the winding part, a first magnetic field device has, which cooperates with the winding part by an electric motor.
  • the commutator device is preferably arranged in the dry area.
  • the commutator designed as, preferably fixed, mechanical commutator is, wherein advantageously in the dry area at least one of the mechanical Commutator contacting, circumferentially trained brush pair arranged is.
  • the rotor and / or the brush holder Is rotatably mounted on a fixed axis, wherein preferably the Winding part is firmly connected to the axis.
  • the fixed, liquid and gas tight fixed to the axis Winding part which may be formed as a pot or as a disc separates the wet area of the dry area by a liquid- and gas-tight contacting to the housing.
  • the power supply to the winding of the winding part takes place over the collector.
  • the brush holder drive a rotor with rotor windings and a having associated with these rotatable auxiliary commutator, which of a fixed auxiliary brush pair is contacted, with a preferably for the rotor fixed second magnetic field and feedback system is provided.
  • the brush holder drive thus has its own, of the winding disc independent separate secondary drive on which the brushes of the prime mover drives. It is provided that the brush pair preferably via Slip rings with a load voltage source and the auxiliary brush pair with a Control voltage source is conductively connected. From the constant power supply from the load voltage source is without the use of control electronics the power required for the particular load condition posed.
  • the speed control of the pump impeller is via the Auxiliary drive, with its auxiliary brushes at the control voltage of the variable Control voltage source is applied.
  • the secondary drive can use a conventional Motor electronics are controlled.
  • the required for the secondary drive Performance is only a fraction of the total system needed Performance, for example about 10% of the total power. Thus, can instead of a complex and expensive power electronics a simpler and cheaper control unit to be used.
  • the commutator as Flat commutator can be formed.
  • the flat commutator offers together with the arranged in the axial direction brush pair has the advantage that the Brushes can not be lifted by centrifugal force effect.
  • the Commutator is designed as an electronic commutator, wherein the electronic commutator is preferably integrated in the housing.
  • the first and / or second Magnetic field device is formed by a permanent magnetic material. This makes it possible to achieve a synchronous drive of the rotor.
  • the first and / or second magnetic field device is formed by at least one winding. In this asynchronous version can achieve cost advantages over the synchronous version.
  • the figures each show a housing 1 with an electric drive device 2 for example connected to a pump impeller, by a rotor 3 formed rotatable component. It is the runner 3-containing Wet area 4 from the drying area 5 by a winding part 6 liquid-tight separated.
  • the winding part 6 is connected to a fixed axis 7.
  • the rotor 3 is rotatably mounted with respect to the axis 7, wherein the bearings denoted by reference numeral 8.
  • the static winding part 6 has windings 9, which with a commutator 10 in a conductive connection stand.
  • On the rotor 3 is on the side of the winding part 6, a first magnetic field device 16 attached. In the winding part 6, a rotating field is generated, which drives the rotor 3 through the magnetic field device 16.
  • the magnetic field device 16 can be made by permanent magnetic material or by Windings be formed.
  • the commutator device 10 is provided by a mechanical Commutator 10a formed.
  • Reference numeral 8a is the bearing of the brush holder 13 referred to the axis 7.
  • the brush holder drive 17 is formed as a separate secondary drive with its own rotor 21 with rotor windings, which is firmly connected to the brush holder 13 and in this way the brushes 11, 12 drives for the prime mover.
  • the brushes 11, 12 have their own power supply by being connected via slip rings 14, 15 with a load voltage source U L.
  • the auxiliary brushes 22, 23 for the brush holder drive 17 are fixed and connected to a control voltage source U st .
  • the auxiliary commutator 24 of the brush holder drive 17 is rotatable about the axis 7.
  • Reference numeral 25 designates a leftward conclusion of the winding disk 6.
  • FIGS. 3 and 4 show alternative embodiments in which the commutator device 10 is formed by an electronic commutator 10b.
  • the electronic commutator 10b has control lines 18 and is over Lines 19 connected to a DC source.
  • the electronic Commutator 10b converts the DC voltage into a multi-phase AC voltage converted, whereby in the winding part 6 a rotating field is built up.
  • the winding part 6 can be used as a disk 6a (FIGS. 1 and 3) or as a pot 6b (FIGS. 2 and 4).

Abstract

The pump has a wet area (4) containing the rotor (3), and a separate dry area (5). Wet and dry areas are separate by a stationary armature (6) generating an electromagnetic rotary field. The windings (9) of the armature are connected to a stationary, pref. mechanical commutator (10) located in the dry area. The rotor has a first magnetic field device (16) on the side facing the armature, which is in electric motor action with the armature. A rotating pair of brushes (11,12) in the dry area is in contact with the commutator. The brushes are held by a rotating brush holder (13) with drive (17). The first and/or a second magnetic field device (16,26) are formed by a permanently magnetic material.

Description

Die Erfindung betrifft eine elektrische Antriebseinrichtung für einen Läufer, insbesondere für ein drehbar gelagertes Pumpenlaufrad einer Kreiselpumpe, mit einem den drehbaren Bauteil beinhaltenden Nassbereich und einem von diesem getrennten Trockenbereich.The invention relates to an electric drive device for a runner, in particular for a rotatably mounted pump impeller of a centrifugal pump, with a the rotating part containing wet area and one of this separate drying area.

Bei herkömmlichen Kreiselpumpen wird ein das Pumpenlaufrad beinhaltender Nassbereich üblicherweise durch Dichtungselemente, beispielsweise Gleitringdichtungen oder dergleichen von einem den elektrischen Antrieb beinhaltenden Trockenbereich getrennt. Insbesondere bei korrosiven Medien kann es zu frühzeitiger Alterung oder Beschädigung der Dichtungselemente und somit zu funktionsbeeinträchtigenden Leckagen zwischen Nass- und Trockenbereich kommen.In conventional centrifugal pumps, a pump impeller containing Wet area usually by sealing elements, such as mechanical seals or the like of an electric drive-containing Dry area separated. Especially with corrosive media it may be too early Aging or damage to the sealing elements and thus detrimental to function Leaks between wet and dry area come.

Um Wellendichtungen zu vermeiden, ist es bekannt, das Pumpenlaufrad über magnetische Kupplungen anzutreiben. Derartige magnetische Kupplungsantriebe sind etwa aus der US 3,802,804 A, der US 4,013,384 A, der US 4,111,614 A oder der US 4,283,645 A bekannt.To avoid shaft seals, it is known to overflow the pump impeller to drive magnetic couplings. Such magnetic coupling drives are for example from US 3,802,804 A, US 4,013,384 A, US 4,111,614 A or US 4,283,645 A known.

Weiters sind sogenannte "inside-out-motors" bekannt, bei denen ein äußerer Rotor um einen inneren Stator angeordnet ist. Inside-Out-Motoren werden beispielweise durch die Dokumente US 5,986,379 A, US 6,239,532 B1 und US 6,286,199 B1 geoffenbart und sind üblicherweise als elektronisch kommutierte Elektromotoren ausgeführt.Furthermore, so-called "inside-out motors" are known in which an outer Rotor is arranged around an inner stator. Inside-out engines are for example by the documents US 5,986,379 A, US 6,239,532 B1 and No. 6,286,199 B1, and are usually commutated electronically Electric motors executed.

Die DE 196 27 854 A1 zeigt einen Pumpenmotor mit Statormagnetsystem, das vom im Nassbereich befindlichen Rotormagnetsystem durch eine dichtende Membran getrennt ist. Die Vorrichtung weist des weiteren einen Kommutatorring und zwei Kollektorbürsten in je einem Bürstenhalter auf, der drehbar gelagert und durch die Magnetkraft vom Rotor antreibbar ist.DE 196 27 854 A1 shows a pump motor with stator magnet system, the from the rotor magnet system located in the wet area by a sealing Membrane is separated. The device further comprises a commutator ring and two collector brushes each in a brush holder, which is rotatably mounted and is driven by the magnetic force from the rotor.

Die JP 63-154037 A zeigt einen Pumpenmotor in Axialspaltausführung, bei den der Nassbereich vom Trockenbereich über eine der Statorjochanordnung zugehörige Scheibe getrennt ist. JP 63-154037 A shows a pump motor in Axialspaltausführung, in the the wet area of the dry area via one of the Statorjochanordnung associated Disc is separated.

Die US 3,870,914 A zeigt einen Pumpenmotor mit rotierender Bürstenanordnung, bei dem der Bürstenantrieb über einen Rotor mit einem weiteren feststehenden Kommutator betreibbar ist.US 3,870,914 A shows a pump motor with rotating brush arrangement, in which the brush drive via a rotor with another fixed Commutator is operable.

Es ist die Aufgabe der Erfindung, auf möglichst einfache Weise einen einfachen und zuverlässigen Antrieb für einen Läufer, insbesondere für ein Pumpenlaufrad, bereitzustellen.It is the object of the invention, in the simplest possible way a simple and reliable drive for a rotor, in particular for a pump impeller, provide.

Erfindungsgemäß wird dies dadurch erreicht, dass zumindest ein feststehender, ein elektromagnetisches Drehfeld erzeugender Wicklungsteil den Nassbereich vom Trockenbereich trennt, wobei die Wicklungen des Wicklungsteiles mit einer Kommutatoreinrichtung leitend verbunden sind, und dass der drehbare Bauteil zumindest auf eine dem Wicklungsteil zugewandten Seite eine erste Magnetfeldeinrichtung aufweist, welche mit dem Wicklungsteil elektromotorisch zusammenwirkt.According to the invention this is achieved in that at least one fixed, an electromagnetic rotating field generating winding part of the wet area separates from the dry area, wherein the windings of the winding part with a Commutator are conductively connected, and that the rotatable component at least on a side facing the winding part, a first magnetic field device has, which cooperates with the winding part by an electric motor.

Die Kommutatoreinrichtung ist vorzugsweise im Trockenbereich angeordnet. In einer Ausführungsvariante der Erfindung ist vorgesehen, dass die Kommutatoreinrichtung als, vorzugsweise feststehender, mechanischer Kommutator ausgebildet ist, wobei vorteilhafterweise im Trockenbereich zumindest ein den mechanischen Kommutator kontaktierendes, umlaufend ausgebildetes Bürstenpaar angeordnet ist. Vorzugsweise wird das Bürstenpaar von einem drehbaren Bürstenhalter gehalten, welcher durch einen Bürstenhalterantrieb angetrieben wird.The commutator device is preferably arranged in the dry area. In an embodiment of the invention, it is provided that the commutator designed as, preferably fixed, mechanical commutator is, wherein advantageously in the dry area at least one of the mechanical Commutator contacting, circumferentially trained brush pair arranged is. Preferably, the brush pair of a rotatable brush holder held, which is driven by a brush holder drive.

Vorzugsweise ist dabei vorgesehen, dass der Läufer und/oder der Bürstenhalter auf einer feststehende Achse drehbar gelagert ist, wobei vorzugsweise der Wicklungsteil fest mit der Achse verbunden ist.Preferably, it is provided that the rotor and / or the brush holder Is rotatably mounted on a fixed axis, wherein preferably the Winding part is firmly connected to the axis.

Der fest, flüssigkeits- und gasdicht mit der Achse verbundene feststehende Wicklungsteil, welcher als Topf oder als Scheibe ausgebildet sein kann, trennt den Nassbereich vom Trockenbereich durch eine flüssigkeits- und gasdichte Kontaktierung zum Gehäuse. Die Stromzufuhr zur Wicklung des Wicklungsteiles erfolgt über den Kollektor. Zur Erzeugung des Drehfeldes in den Wicklungen werden die Bürsten des Bürstenpaares über den stillstehenden mechanischen Kollektor geführt. Wesentlich ist, dass der Bürstenhalterantrieb zum Antrieb des Bürstenpaares hydraulisch vom drehbaren Bauteil getrennt ist, um eine vollständige hydraulische Trennung des Nassbereiches vom Trockenbereich zu garantieren.The fixed, liquid and gas tight fixed to the axis Winding part, which may be formed as a pot or as a disc separates the wet area of the dry area by a liquid- and gas-tight contacting to the housing. The power supply to the winding of the winding part takes place over the collector. To generate the rotating field in the windings the brushes of the brush pair over the stationary mechanical collector guided. It is essential that the brush holder drive for driving the brush pair hydraulically separated from the rotatable component to a complete to guarantee hydraulic separation of the wet area from the dry area.

In einer besonders bevorzugten Ausführungsvariante der Erfindung ist vorgesehen, dass der Bürstenhalterantrieb einen Rotor mit Rotorwicklungen und einen mit diesen verbundenen drehbaren Hilfskommutator aufweist, welcher von einem feststehenden Hilfsbürstenpaar kontaktiert ist, wobei für den Rotor ein vorzugsweise feststehendes zweites Magnetfeld- und Rückschlusssystem vorgesehen ist. In a particularly preferred embodiment of the invention, it is provided that the brush holder drive a rotor with rotor windings and a having associated with these rotatable auxiliary commutator, which of a fixed auxiliary brush pair is contacted, with a preferably for the rotor fixed second magnetic field and feedback system is provided.

Der Bürstenhalterantrieb weist somit einen eigenen, von der Wicklungsscheibe unabhängigen separaten Sekundärantrieb auf, welcher die Bürsten des Primärantriebes antreibt. Dabei ist vorgesehen, dass das Bürstenpaar vorzugsweise über Schleifringe mit einer Lastspannungsquelle und das Hilfsbürstenpaar mit einer Steuerspannungsquelle leitend verbunden ist. Aus der konstanten Spannungsversorgung aus der Lastspannungsquelle wird ohne den Einsatz einer Steuerelektronik der für den jeweiligen Belastungszustand erforderliche Strom zur Verfügung gestellt. Die Drehzahlsteuerung des Pumpenlaufrades erfolgt über den Hilfsantrieb, der mit seinen Hilfsbürsten an der Steuerspannung der veränderlichen Steuerspannungsquelle anliegt. Der Sekundärantrieb kann über eine herkömmliche Motorelektronik angesteuert werden. Die für den Sekundärantrieb erforderliche Leistung macht nur einen Bruchteil der im System benötigten gesamten Leistung, beispielsweise etwa 10% der Gesamtleistung, aus. Somit kann anstelle einer aufwendigen und teuren Leistungselektronik eine einfachere und billigere Steuereinheit verwendet werden.The brush holder drive thus has its own, of the winding disc independent separate secondary drive on which the brushes of the prime mover drives. It is provided that the brush pair preferably via Slip rings with a load voltage source and the auxiliary brush pair with a Control voltage source is conductively connected. From the constant power supply from the load voltage source is without the use of control electronics the power required for the particular load condition posed. The speed control of the pump impeller is via the Auxiliary drive, with its auxiliary brushes at the control voltage of the variable Control voltage source is applied. The secondary drive can use a conventional Motor electronics are controlled. The required for the secondary drive Performance is only a fraction of the total system needed Performance, for example about 10% of the total power. Thus, can instead of a complex and expensive power electronics a simpler and cheaper control unit to be used.

In weiterer Ausführung der Erfindung ist vorgesehen, dass der Kommutator als Flachkommutator ausgebildet sein kann. Der Flachkommutator bietet zusammen mit dem in axialer Richtung angeordneten Bürstenpaar den Vorteil, dass die Bürsten durch Fliehkraftwirkung nicht abgehoben werden können.In a further embodiment of the invention, it is provided that the commutator as Flat commutator can be formed. The flat commutator offers together with the arranged in the axial direction brush pair has the advantage that the Brushes can not be lifted by centrifugal force effect.

Anstelle eines Scheibenläufers kann für Primär- und Sekundärantrieb auch ein Stabankermotor verwendet werden.Instead of a disc rotor can also be used for primary and secondary drive Bar anchor motor can be used.

Alternativ zur mechanischen Kommutierung kann vorgesehen sein, dass die Kommutatoreinrichtung als elektronischer Kommutator ausgebildet ist, wobei der elektronische Kommutator vorzugsweise in das Gehäuase integriert ist.Alternatively to the mechanical commutation can be provided that the Commutator is designed as an electronic commutator, wherein the electronic commutator is preferably integrated in the housing.

Ein hoher Wirkungsgrad lässt sich erzielen, wenn die erster und/oder zweite Magnetfeldeinrichtung durch ein permanent magnetisches Material gebildet ist. Dadurch lässt sich ein synchroner Antrieb des Läufers erreichen. Alternativ dazu kann auch vorgesehen sein, dass die erste und/oder zweite Magnetfeldeinrichtung durch zumindest eine Wicklung gebildet ist. Bei dieser Asynchronausführung lassen sich Kostenvorteile gegenüber der Synchronausführung erzielen.High efficiency can be achieved if the first and / or second Magnetic field device is formed by a permanent magnetic material. This makes it possible to achieve a synchronous drive of the rotor. Alternatively can also be provided that the first and / or second magnetic field device is formed by at least one winding. In this asynchronous version can achieve cost advantages over the synchronous version.

Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen schematisch:

Fig. 1
eine erfindungsgemäße Antriebseinrichtung in einer ersten Ausführungsvariante in einem Längsschnitt,
Fig. 2
eine erfindungsgemäße Antriebseinrichtung in einer zweiten Ausführungsvariante in einem Längsschnitt,
Fig. 3
eine erfindungsgemäße Antriebseinrichtung in einer dritten Ausführungsvariante in einem Längsschnitt und
Fig. 4
eine erfindungsgemäße Antriebseinrichtung in einer vierten Ausführungsvariante in einem Längsschnitt.
The invention will be explained in more detail below with reference to FIGS. They show schematically:
Fig. 1
a drive device according to the invention in a first embodiment in a longitudinal section,
Fig. 2
a drive device according to the invention in a second embodiment in a longitudinal section,
Fig. 3
a drive device according to the invention in a third embodiment in a longitudinal section and
Fig. 4
a drive device according to the invention in a fourth embodiment in a longitudinal section.

Funktionsgleiche Teile sind in den Ausführungsvarianten mit gleichen Bezugszeichen versehen.Functionally identical parts are in the embodiment variants with the same reference numerals Mistake.

Die Figuren zeigen jeweils ein Gehäuse 1 mit einer elektrischen Antriebseinrichtung 2 für einen beispielsweise mit einem Pumpenlaufrad verbundenen, durch einen Läufer 3 gebildeten drehbaren Bauteil. Dabei ist der den Läufer 3 beinhaltende Nassbereich 4 vom Trockenbereich 5 durch einen Wicklungsteil 6 flüssigkeitsdicht getrennt. Der Wicklungsteil 6 ist mit einer feststehenden Achse 7 verbunden. Der Läufer 3 ist bezüglich der Achse 7 drehbar gelagert, wobei die Lager mit Bezugszeichen 8 bezeichnet sind. Der statische Wicklungsteil 6 weist Wicklungen 9 auf, welche mit einer Kommutatoreinrichtung 10 in leitender Verbindung stehen. Am Läufer 3 ist auf der Seite des Wicklungsteiles 6 eine erste Magnetfeldeinrichtung 16 angebracht. Im Wicklungsteil 6 wird ein Drehfeld erzeugt, welches durch die Magnetfeldeinrichtung 16 den Läufer 3 antreibt. Die Magnetfeldeinrichtung 16 kann durch permanent magnetisches Material oder durch Wicklungen gebildet sein.The figures each show a housing 1 with an electric drive device 2 for example connected to a pump impeller, by a rotor 3 formed rotatable component. It is the runner 3-containing Wet area 4 from the drying area 5 by a winding part 6 liquid-tight separated. The winding part 6 is connected to a fixed axis 7. The rotor 3 is rotatably mounted with respect to the axis 7, wherein the bearings denoted by reference numeral 8. The static winding part 6 has windings 9, which with a commutator 10 in a conductive connection stand. On the rotor 3 is on the side of the winding part 6, a first magnetic field device 16 attached. In the winding part 6, a rotating field is generated, which drives the rotor 3 through the magnetic field device 16. The magnetic field device 16 can be made by permanent magnetic material or by Windings be formed.

In den Fig. 1 und Fig. 2 ist die Kommutatoreinrichtung 10 durch einen mechanischen Kommutator 10a gebildet. Die Stromzufuhr zum mechanischen Kommutator 10a erfolgt über umlaufende Bürsten 11, 12, welche in einem drehbaren Bürstenhalter 13 gehalten sind. Mit Bezugszeichen 8a ist die Lagerung des Bürstenhalters 13 um die Achse 7 bezeichnet. Die Stromzufuhr zu den Bürsten 11, 12 erfolgt über Schleifringe 14, 15.In FIGS. 1 and 2, the commutator device 10 is provided by a mechanical Commutator 10a formed. The power supply to the mechanical commutator 10a via circulating brushes 11, 12, which in a rotatable Brush holder 13 are held. Reference numeral 8a is the bearing of the brush holder 13 referred to the axis 7. The power supply to the brushes 11, 12 via slip rings 14, 15.

Der Bürstenhalterantrieb 17 ist als separater Sekundärantrieb mit einem eigenen Rotor 21 mit Rotorwicklungen ausgebildet, welcher mit dem Bürstenhalter 13 fest verbunden ist und auf diese Weise die Bürsten 11, 12 für den Primärantrieb antreibt. Die Bürsten 11, 12 weisen eine eigene Stromversorgung auf, indem sie über Schleifringe 14, 15 mit einer Lastspannungsquelle UL verbunden sind. Die Hilfsbürsten 22, 23 für den Bürstenhalterantrieb 17 sind feststehend ausgebildet und mit einer Steuerspannungsquelle Ust verbunden. Der Hilfskommutator 24 des Bürstenhalterantriebs 17 ist um die Achse 7 drehbar ausgebildet. Für den Rotor 21 ist eine feststehende zweite Magnetfeld- und Rückschlusseinrichtung 26 vorgesehen. Mit Bezugszeichen 25 ist ein geblechter Rückschluss der Wicklungsscheibe 6 bezeichnet. The brush holder drive 17 is formed as a separate secondary drive with its own rotor 21 with rotor windings, which is firmly connected to the brush holder 13 and in this way the brushes 11, 12 drives for the prime mover. The brushes 11, 12 have their own power supply by being connected via slip rings 14, 15 with a load voltage source U L. The auxiliary brushes 22, 23 for the brush holder drive 17 are fixed and connected to a control voltage source U st . The auxiliary commutator 24 of the brush holder drive 17 is rotatable about the axis 7. For the rotor 21, a fixed second magnetic field and feedback device 26 is provided. Reference numeral 25 designates a leftward conclusion of the winding disk 6.

Aus der Spannungsversorgung der Lastspannungsquelle UL kann ohne Einsatz einer Elektronik der für den jeweiligen Belastungszustand erforderliche Strom gezogen werden. Dies hat den Vorteil, dass keine Leistungselektronik notwendig ist, da der Bürstenhalterantrieb 17 zur Drehzahlsteuerung des Läufers 3 durch Variieren der Steuerspannung Ust über die Motorelektronik angesteuert werden kann. Die hierzu benötigte Leistung beträgt nur einen Bruchteil, beispielsweise 10%, der gesamten im System benötigten Leistung. Es kann somit anstelle einer aufwendigen und teuren Leistungselektronik eine einfachere und billigere Steuereinheit verwendet werden. Anstelle der abgebildeten Scheibenläufer kann sowohl für den Primärantrieb als auch für den Sekundärantrieb auch ein herkömmlicher Stabankermotor verwendet werden.From the power supply of the load voltage source U L can be drawn without the use of electronics required for the respective load state current. This has the advantage that no power electronics is necessary, since the brush holder drive 17 for speed control of the rotor 3 can be controlled by varying the control voltage U st via the engine electronics. The power required for this purpose is only a fraction, for example 10%, of the total power required in the system. It can thus be used instead of a complex and expensive power electronics a simpler and cheaper control unit. Instead of the illustrated pancake can be used for both the prime mover and for the secondary drive and a conventional rod armature motor.

Die Fig. 3 und Fig. 4 zeigen Ausführungsvarianten, bei denen die Kommutatoreinrichtung 10 durch einen elektronischen Kommutator 10b gebildet ist. Der elektronische Kommutator 10b verfügt über Steuerleitungen 18 und wird über Leitungen 19 mit einer Gleichspannquelle verbunden. Durch den elektronischen Kommutator 10b wird die Gleichspannung in eine mehrphasige Wechselspannung konvertiert, wodurch im Wicklungsteil 6 ein Drehfeld aufgebaut wird.FIGS. 3 and 4 show alternative embodiments in which the commutator device 10 is formed by an electronic commutator 10b. Of the electronic commutator 10b has control lines 18 and is over Lines 19 connected to a DC source. By the electronic Commutator 10b converts the DC voltage into a multi-phase AC voltage converted, whereby in the winding part 6 a rotating field is built up.

Der Wicklungsteil 6 kann als Scheibe 6a (Fig. 1 und Fig. 3) oder als Topf 6b (Fig. 2 und Fig. 4) ausgebildet sein.The winding part 6 can be used as a disk 6a (FIGS. 1 and 3) or as a pot 6b (FIGS. 2 and 4).

Claims (13)

Elektrische Antriebseinrichtung (2) für einen Läufer (3), insbesondere zum Antrieb eines drehbar gelagerten Pumpenlaufrad einer Kreiselpumpe, mit einem den Läufer (3) beinhaltenden Nassbereich (4) und einem von diesem getrennten Trockenbereich (5), dadurch gekennzeichnet, dass zumindest ein feststehender, ein elektromagnetisches Drehfeld erzeugender Wicklungsteil (6) den Nassbereich (4) vom Trockenbereich (5) trennt, wobei die Wicklungen (9) des Wicklungsteiles (6) mit einer Kommutatoreinrichtung (10) verbunden sind, und dass der drehbare Bauteil zumindest auf eine dem leitend Wicklungsteil (6) zugewandten Seite eine erste Magnetfeldeinrichtung (16) aufweist, welche mit dem Wicklungsteil (6) elektromotorisch zusammenwirkt.Electric drive device (2) for a rotor (3), in particular for driving a rotatably mounted pump impeller of a centrifugal pump, with a wet region (4) containing the rotor (3) and a drying region (5) separate from said rotor (3), characterized in that at least one stationary, an electromagnetic rotating field generating winding part (6) the wet area (4) from the drying area (5) separates, wherein the windings (9) of the winding part (6) with a commutator (10) are connected, and that the rotatable member at least one the conductive winding part (6) side facing a first magnetic field device (16) which cooperates with the winding part (6) by an electric motor. Antriebseinrichtung (2) nach Anspruch 1, dadurch gekennzeichnet, dass die Kommutatoreinrichtung (10) im Trockenbereich (5) angeordnet ist.Drive device (2) according to claim 1, characterized in that the commutator (10) in the dry area (5) is arranged. Antriebseinrichtung (2) nach Anspruch 2, dadurch gekennzeichnet, dass die Kommutatoreinrichtung (10) als, vorzugsweise feststehender, mechanischer Kommutator (10a) ausgebildet ist.Drive device (2) according to claim 2, characterized in that the commutator (10) as, preferably fixed, mechanical commutator (10a) is formed. Antriebseinrichtung nach Anspruch 3, dadurch gekennzeichnet, dass im Trockenbereich (5) zumindest ein den mechanischen Kommutator (10a) kontaktierendes, umlaufend ausgebildetes Bürstenpaar (11, 12) angeordnet ist, wobei vorzugsweise das Bürstenpaar (11, 12) von einem drehbaren Bürstenhalter (13) gehalten ist, welcher Bürstenhalter (13) durch einen Bürstenhalterantrieb (17) angetrieben ist.Drive device according to claim 3, characterized in that in the dry area (5) at least one the mechanical commutator (10a) contacting circumferentially formed brush pair (11, 12) is arranged, wherein preferably the brush pair (11, 12) of a rotatable brush holder (13 ), which brush holder (13) is driven by a brush holder drive (17). Antriebseinrichtung (2) nach Anspruch 4, dadurch gekennzeichnet, dass der Bürstenhalterantrieb (17) einen Rotor (21) mit Rotorwicklungen und einen mit diesen verbundenen drehbaren Hilfskommutator (24) aufweist, welcher von einem vorzugsweise feststehenden Hilfsbürstenpaar (22, 23) kontaktiert ist, wobei für den Rotor (21) eine feststehende zweite Magnetfeldeinrichtung (26) vorgesehen ist.Drive device (2) according to claim 4, characterized in that the brush holder drive (17) has a rotor (21) with rotor windings and a rotatable auxiliary commutator (24) connected thereto which is contacted by a preferably fixed auxiliary brush pair (22, 23), wherein a fixed second magnetic field device (26) is provided for the rotor (21). Antriebseinrichtung (2) nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, dass das Bürstenpaar (11, 12) vorzugsweise über Schleifringe (14, 15) mit einer Lastspannungsquelle (UL) und das Hilfsbürstenpaar (22, 23) mit einer Steuerspannungsquelle (Ust) leitend verbunden ist. Drive device (2) according to one of claims 4 or 5, characterized in that the brush pair (11, 12) preferably via slip rings (14, 15) with a load voltage source (U L ) and the Hilfsbürstenpaar (22, 23) with a control voltage source ( U st ) is conductively connected. Antriebseinrichtung (2) nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass der mechanische Kommutator (10a) als Flachkommutator ausgebildet ist.Drive device (2) according to one of claims 3 to 6, characterized in that the mechanical commutator (10a) is designed as a flat commutator. Antriebseinrichtung (2) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Läufer (3) und/oder der Bürstenhalter (13) auf einer feststehenden Achse (7) drehbar gelagert ist, wobei vorzugsweise der Wicklungsteil (6) fest mit der Achse (7) verbunden ist.Drive device (2) according to one of claims 1 to 7, characterized in that the rotor (3) and / or the brush holder (13) on a fixed axis (7) is rotatably mounted, wherein preferably the winding part (6) fixed to the Axis (7) is connected. Antriebseinrichtung (2) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Kommutatoreinrichtung (10) als elektronischer Kommutator (10b) ausgebildet ist, wobei der elektronische Kommutator (10b) vorzugsweise in das Gehäuse (1) integriert ist.Drive device (2) according to claim 1 or 2, characterized in that the commutator (10) as an electronic commutator (10b) is formed, wherein the electronic commutator (10b) is preferably integrated in the housing (1). Antriebseinrichtung (2) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Wicklungsteil (6) im Wesentlichen als Scheibe (6a) ausgebildet ist.Drive device (2) according to one of claims 1 to 9, characterized in that the winding part (6) substantially as a disc (6a) is formed. Antriebseinrichtung (2) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Wicklungsteil (6) im Wesentlichen als Topf (6b) ausgebildet ist.Drive device (2) according to one of claims 1 to 9, characterized in that the winding part (6) substantially as a pot (6b) is formed. Antriebseinrichtung (2) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die erste und/oder zweite Magnetfeldeinrichtung (16, 26) durch ein permanent magnetisches Material gebildet ist.Drive device (2) according to one of claims 1 to 11, characterized in that the first and / or second magnetic field device (16, 26) is formed by a permanent magnetic material. Antriebseinrichtung (2) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die erste und/oder zweite Magnetfeldeinrichtung (16, 26) durch zumindest eine Wicklung gebildet ist.Drive device (2) according to one of claims 1 to 12, characterized in that the first and / or second magnetic field device (16, 26) is formed by at least one winding.
EP04450092A 2003-10-17 2004-04-22 Electrical driving apparatus Expired - Lifetime EP1526284B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT04450092T ATE343065T1 (en) 2003-10-17 2004-04-22 ELECTRICAL DRIVE DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0164903A AT413907B (en) 2003-10-17 2003-10-17 ELECTRIC DRIVE DEVICE
AT16492003 2003-10-17

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EP1526284A2 true EP1526284A2 (en) 2005-04-27
EP1526284A3 EP1526284A3 (en) 2005-05-18
EP1526284B1 EP1526284B1 (en) 2006-10-18

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AT (2) AT413907B (en)
DE (1) DE502004001784D1 (en)

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WO2001038741A1 (en) * 1999-11-24 2001-05-31 Robert Bosch Gmbh Fluid pump with a motor housing and a method for the production of a motor housing
US6254359B1 (en) * 1996-05-10 2001-07-03 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for providing a jewel bearing for supporting a pump rotor shaft
WO2002051658A2 (en) * 2000-12-22 2002-07-04 Webasto Thermosysteme International Gmbh Vehicle heating device with an integrated heat transfer circulation pump

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Publication number Priority date Publication date Assignee Title
DE2604849A1 (en) * 1976-02-07 1977-08-11 Pierburg Autogeraetebau Kg ELECTRIC FUEL PUMP
US6254359B1 (en) * 1996-05-10 2001-07-03 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for providing a jewel bearing for supporting a pump rotor shaft
US6071093A (en) * 1996-10-18 2000-06-06 Abiomed, Inc. Bearingless blood pump and electronic drive system
WO2001038741A1 (en) * 1999-11-24 2001-05-31 Robert Bosch Gmbh Fluid pump with a motor housing and a method for the production of a motor housing
WO2002051658A2 (en) * 2000-12-22 2002-07-04 Webasto Thermosysteme International Gmbh Vehicle heating device with an integrated heat transfer circulation pump

Also Published As

Publication number Publication date
EP1526284B1 (en) 2006-10-18
ATE343065T1 (en) 2006-11-15
EP1526284A3 (en) 2005-05-18
DE502004001784D1 (en) 2006-11-30
ATA16492003A (en) 2005-10-15
AT413907B (en) 2006-07-15

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