EP0060993B1 - Magnetic drive for a liquid pump - Google Patents

Magnetic drive for a liquid pump Download PDF

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Publication number
EP0060993B1
EP0060993B1 EP82101047A EP82101047A EP0060993B1 EP 0060993 B1 EP0060993 B1 EP 0060993B1 EP 82101047 A EP82101047 A EP 82101047A EP 82101047 A EP82101047 A EP 82101047A EP 0060993 B1 EP0060993 B1 EP 0060993B1
Authority
EP
European Patent Office
Prior art keywords
pump
rotor
liquid pump
gas turbine
liquid
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.)
Expired
Application number
EP82101047A
Other languages
German (de)
French (fr)
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EP0060993A3 (en
EP0060993A2 (en
Inventor
Thomas Dipl.-Ing. Weber
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0060993A2 publication Critical patent/EP0060993A2/en
Publication of EP0060993A3 publication Critical patent/EP0060993A3/en
Application granted granted Critical
Publication of EP0060993B1 publication Critical patent/EP0060993B1/en
Expired legal-status Critical Current

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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
    • F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/08—Adaptations for driving, or combinations with, 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/025—Details of the can separating the pump and drive area
    • 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
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/026—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/027—Details of the magnetic circuit

Definitions

  • the invention relates to a liquid pump with a completely encapsulated pump housing, with a non-magnetic outer wall and with non-contact magnetic rotary field drive of the at least partially magnetizable pump rotor by means of an externally driven magnetized rotor which coaxially surrounds the pump housing with an inner cylindrical recess and is permanently magnetically polarized on its cylinder surface.
  • a pump of the generic type is known from DE-B-1 051 123, in which the magnets assigned to the impeller are arranged in the conveying blades, as a result of which a restriction to certain blade shapes is specified.
  • the selected double bearing creates obstacles in the flow path of the pump, which has a negative effect on the pump efficiency.
  • FR-A-1 339 539 discloses a pump with a magnetic field drive, in which the magnets are arranged in different radial planes which, viewed axially, lie opposite one another. This results in an increased overall length.
  • the pump rotor itself is also double-sided, which has a negative effect on the design and flow technology.
  • DE-A-2 058 062 describes a pump in which the pump runner is supported exclusively via a hydrodynamic fluid film which is formed within the air gap of a magnetic field drive. This results in the disadvantage that additional means for supplying fluid under pressure are absolutely necessary.
  • the air gap always has a spherical or conical shape, which has a particularly difficult effect on the production.
  • the magnetizable parts of the rotor and the blading are functionally separated.
  • the invention has for its object to simplify the drive known per se by a magnetic rotating field in a liquid pump to the extreme.
  • the solution according to the invention is that the pump rotor with its blading is in one piece and has a closed cylindrical outer surface and is axially and radially supported on one side in a single bearing.
  • the simple basic shapes of the driving rotor, the housing and the pump rotor and the simple bearing essentially serving for axial support make it possible to produce a completely encapsulated liquid pump with very little effort, which is suitable for a very wide speed range.
  • Another major advantage is the extremely small installation dimensions, which make them particularly suitable for use in the hub of a gas turbine rotor.
  • a pump rotor made of ferromagnetic metal is driven by simple permanent magnets embedded in the cylindrical surface of the rotor. It is also expedient if the pump rotor and / or the rotor are permanently magnetized in a sectoral, in particular mutually corresponding, distribution in the base material. Radial grooves can advantageously be provided between the sectors of different polarity.
  • a suitable material for the pump rotor is cobalt samarium, which can be processed as a sintered material.
  • the axial support and simultaneous centering of the pump rotor which is preferably designed with radial blading or simple radial channels, can preferably be provided by a centrally arranged ball.
  • the spherical surface can, if necessary, be provided with etched spiral grooves.
  • the pump housing which should have a particularly thin wall to keep the air gap small, preferably consists of silicon nitride ceramic.
  • the liquid pump according to the invention can be used particularly advantageously as a gas turbine auxiliary unit in gas turbine engines, for. B. as a fuel pump for light and inexpensive gas turbine engines short life, as z. B. can be used for entry bodies.
  • a gas turbine auxiliary unit in particular as a gas turbine fuel pump, a preferred arrangement is that the pump housing is suspended from several struts in the nose of the air inlet area, the latter at the same time serving as parts of a guide vane and the suction and delivery lines for the inner channels Pump included.
  • the drawing shows a section through the front end of a gas turbine rotor with a pump design according to the invention.
  • a built gas turbine rotor or rotor 1 with a first compressor blading 2 is shown.
  • Struts 4 and 5 are attached to the gas turbine housing 3 and have a streamlined nose 6 in the inlet of the gas turbine, to which the pump housing 8 is fastened by means of a screw connection 7.
  • a seal is provided by a sealing ring 9.
  • the strut 5 shown below contains a suction line 10 which opens into a central channel 11 in the nose 6, which merges into the axial inlet of the pump rotor 13.
  • the pump rotor 13 is in one piece with an essentially radial blading 14 verses hen, however, which has an axial outlet which is connected to a coaxial annular space 15 in the nose 6.
  • This annular space in turn hangs together with a delivery line 16 in the strut 4 shown above and merges into a channel 17 on the outside of the gas turbine housing 3.
  • the pump rotor 13 is supported by a central ball 18 on a bearing body 19 in the pump housing 8.
  • the outside of the thin-walled cylindrical pump housing 8 forms a narrow air gap 12 with an inner cylinder surface 22 in the gas turbine rotor 1, permanent magnets 23 being let into the cylinder surface 22 of the gas turbine rotor 1 in the overlap region.

Description

Die Erfindung bezieht sich auf eine Flüssigkeitspumpe mit vollständig gekapseltem Pumpengehäuse, mit unmagnetischer Außenwand und mit berührungslosem magnetischen Drehfeldantrieb des zumindest teilweise magnetisierbaren Pumpenläufers durch einen fremdgetriebenen magnetisierten Rotor, der das Pumpengehäuse mit einer innenzylindrischen Ausnehmung koaxial umgibt und an seiner Zylinderfläche dauermagnetisch polarisiert ist.The invention relates to a liquid pump with a completely encapsulated pump housing, with a non-magnetic outer wall and with non-contact magnetic rotary field drive of the at least partially magnetizable pump rotor by means of an externally driven magnetized rotor which coaxially surrounds the pump housing with an inner cylindrical recess and is permanently magnetically polarized on its cylinder surface.

Aus der DE-PS-2 058 062 ist eine Anordnung bekannt, bei der eine berührungsfreie Lagerung des Rotos durch die Wechselwirkung zwischen magnetischen und hydrodynamischen Kräften zustande kommt. Hierdurch ist eine besondere sphärische Gestaltung des Pumpenrades bzw. eine Trennung von Pumpenrad und Antriebsläufer bedingt. Insbesondere zur Erzeugung des hydrodynamischen Lagerfilms sind zudem baulich aufwendige Maßnahmen erforderlich.From DE-PS-2 058 062 an arrangement is known in which a contact-free mounting of the roto comes about through the interaction between magnetic and hydrodynamic forces. This results in a special spherical design of the pump wheel or a separation of the pump wheel and drive rotor. In particular, structurally complex measures are required to generate the hydrodynamic bearing film.

Aus der DE-B-1 051 123 ist eine Pumpe der gattungsgemäßen Bauart bekannt, bei der die dem Schaufelrad zugeordneten Magnete in den Förderschaufeln angeordnet sind, wodurch eine Beschränkung auf bestimmte Schaufelformen vorgegeben ist. Die gewählte doppelte Lagerung erzeugt dabei Hindernisse im Strömungsweg der Pumpe, was den Pumpenwirkungsgrad negativ beeinflußt. In der FR-A-1 339 539 ist eine Pumpe mit Magnetfeldantrieb offenbart, bei dem die Magnete in verschiedenen radialen Ebenen angeordnet sind, die sich - axial gesehen - gegenüberliegen. Dies hat eine vergrößerte Baulänge zur Folge. Der Pumpenläufer selbst ist ebenfalls zweiseitig gelagert, was sich konstruktiv und strömungstechnisch in negativer Weise bemerkbar macht. In der DE-A-2 058 062 ist eine Pumpe beschrieben, bei der die Lagerung des Pumpenlä-' ufers ausschließlich über einen hydrodynamischen Fluidfilm erfolgt, der innnerhalb des Luftspaltes eines Magnetfeldantriebes ausgebildet wird. Hieraus ergibt sich der Nachteil, daß zusätzliche Mittel zur Zuführung von unter Druck stehendem Fluid zwingend erforderlich sind. Der Luftspalt hat dabei stets sphärische oder kegelige Gestalt, was sich insbesondere auch auf die Herstellung erschwerend auswirkt. Zudem sind hier die magnetisierbaren Teile des Läufers und die Beschaufelung funktionell getrennt.A pump of the generic type is known from DE-B-1 051 123, in which the magnets assigned to the impeller are arranged in the conveying blades, as a result of which a restriction to certain blade shapes is specified. The selected double bearing creates obstacles in the flow path of the pump, which has a negative effect on the pump efficiency. FR-A-1 339 539 discloses a pump with a magnetic field drive, in which the magnets are arranged in different radial planes which, viewed axially, lie opposite one another. This results in an increased overall length. The pump rotor itself is also double-sided, which has a negative effect on the design and flow technology. DE-A-2 058 062 describes a pump in which the pump runner is supported exclusively via a hydrodynamic fluid film which is formed within the air gap of a magnetic field drive. This results in the disadvantage that additional means for supplying fluid under pressure are absolutely necessary. The air gap always has a spherical or conical shape, which has a particularly difficult effect on the production. In addition, the magnetizable parts of the rotor and the blading are functionally separated.

Der Erfindung liegt die Aufgabe zugrunde, den an sich bekannten Antrieb durch ein magnetisches Drehfeld in einer Flüssigkeitspumpe auf das äußerste zu vereinfachen. Die erfindungsgemäße Lösung besteht darin, daß der Pumpenläufer mit seiner Beschaufelung einstückig ist und eine geschlossene zylindrische Außenfläche aufweist und einseitig in einem einzigen Lager axial und radial abgestützt ist. Die einfachen Grundformen des antreibenden Rotors, des Gehäuses und des Pumpenläufers und die einfache, im wesentlichen der axialen Abstützung dienende Lagerung ermöglichen es, eine vollständig gekapselte Flüssigkeitspumpe mit einem äußerst geringen Aufwand herzustellen, die für einen sehr weiten Drehzahlbereich geeignet ist. Ein wesentlicher Vorteil liegt zudem in den äußerst geringen Einbaumaßen, die sie insbesondere auch für die Nutzung in der Nabe eines Gasturbinenrotors geeignet macht. In einfachster Ausführung wird ein aus ferromagnetischem Metall bestehender Pumpenläufer durch einfache, in der Zylinderfläche des Rotors eingelassene Dauermagneten angetrieben. Günstig ist es auch, wenn der Pumpenläufer und/oder der Rotor in sektorieller, insbesondere einander entsprechender Verteilung im Grundmaterial dauermagnetisiert sind. Zwischen den Sektoren unterschiedlicher Polarität können dabei in günstiger Weise radiale Nuten angebracht werden. Ein geeigneter Werkstoff für den Pumpenläufer ist Kobaltsamarium, das als Sintermaterial verarbeitet werden kann.The invention has for its object to simplify the drive known per se by a magnetic rotating field in a liquid pump to the extreme. The solution according to the invention is that the pump rotor with its blading is in one piece and has a closed cylindrical outer surface and is axially and radially supported on one side in a single bearing. The simple basic shapes of the driving rotor, the housing and the pump rotor and the simple bearing essentially serving for axial support make it possible to produce a completely encapsulated liquid pump with very little effort, which is suitable for a very wide speed range. Another major advantage is the extremely small installation dimensions, which make them particularly suitable for use in the hub of a gas turbine rotor. In the simplest version, a pump rotor made of ferromagnetic metal is driven by simple permanent magnets embedded in the cylindrical surface of the rotor. It is also expedient if the pump rotor and / or the rotor are permanently magnetized in a sectoral, in particular mutually corresponding, distribution in the base material. Radial grooves can advantageously be provided between the sectors of different polarity. A suitable material for the pump rotor is cobalt samarium, which can be processed as a sintered material.

Die axiale Abstützung und gleichzeitige Zentrierung des Pumpenläufers, der bevorzugt mit radialer Beschaufelung oder einfachen radialen Kanälen ausgebildet ist, kann bevorzugt durch eine zentrisch angeordnete Kugel erfolgen. Zur Erhöhung der Tragfähigkeit des Kugelkalottenlagers kann erforderlichenfalls die Kugeloberfläche mit eingeätzten Spiralrillen versehen sein. Das Pumpengehäuse, das zur Kleinhaltung des Luftspaltes besonders dünnwandig ausgeführt sein sollte, besteht bevorzugt aus Silizium-Nitrit-Keramik.The axial support and simultaneous centering of the pump rotor, which is preferably designed with radial blading or simple radial channels, can preferably be provided by a centrally arranged ball. To increase the load-bearing capacity of the spherical cap bearing, the spherical surface can, if necessary, be provided with etched spiral grooves. The pump housing, which should have a particularly thin wall to keep the air gap small, preferably consists of silicon nitride ceramic.

Die erfindungsgemäße Flüssigkeitspumpe läßt sich besonders vorteilhaft als Gasturbinenhilfsaggregat in Gasturbinentriebwerken nutzen, z. B. als Brennstoffpumpe für leicht und kostengünstig hergestellte Gasturbinentriebwerke kurzer Lebensdauer, wie sie z. B. für Einflugkörper benutzt werden. Bei der Ausgestaltung als Gasturbinenhilfsaggregat, insbesondere als Gasturbinenbrennstoffpumpe, besteht eine bevorzugte Anordnung darin, daß das Pumpengehäuse in der Nase des Lufteintrittsbereiches an mehreren Streben aufgehängt ist, wobei letztere zugleich als Teile eines Vorleitrades dienen können und in inneren Kanälen die Ansaug- und Förderleitung für die Pumpe enthalten.The liquid pump according to the invention can be used particularly advantageously as a gas turbine auxiliary unit in gas turbine engines, for. B. as a fuel pump for light and inexpensive gas turbine engines short life, as z. B. can be used for entry bodies. In the configuration as a gas turbine auxiliary unit, in particular as a gas turbine fuel pump, a preferred arrangement is that the pump housing is suspended from several struts in the nose of the air inlet area, the latter at the same time serving as parts of a guide vane and the suction and delivery lines for the inner channels Pump included.

Die Zeichnung zeigt einen Schnitt durch das vordere Ende eines Gasturbinenrotors mit einer erfindungsgemäßen Pumpenausführung.The drawing shows a section through the front end of a gas turbine rotor with a pump design according to the invention.

Es ist ein gebauter Gasturbinenläufer oder Rotor 1 mit einer ersten Verdichterbeschaufelung 2 gezeigt. Am Gasturbinengehäuse 3 sind Streben 4 und 5 angebracht, die eine strömungsgünstige Nase 6 im Einlauf der Gasturbine tragen, an der über eine Verschraubung 7 das Pumpengehäuse 8 befestigt ist. Eine Abdichtung erfolgt durch einen Dichtring 9. Die unten dargestellte Strebe 5 enthält eine Ansaugleitung 10, die in einen zentralen Kanal 11 in der Nase 6 mündet, der in den axialen Eintritt des Pumpenläufers 13 übergeht. Der Pumpenläufer 13 ist einstückig mit einer im wesentlichen radialen Beschaufelung 14 versehen, die jedoch einen axialen Austritt hat, der mit einem koaxialen Ringraum 15 in der Nase 6 verbunden ist. Dieser Ringraum hängt wiederum zusammen mit einer Förderleitung 16 in der oben dargestellten Strebe 4 und geht in einen Kanal 17 an der Außenseite des Gasturbinengehäuses 3 über. Der Pumpenläufer 13 stützt sich über eine zentrische Kugel 18 an einem Lagerkörper 19 im Pumpengehäuse 8 ab. Auf der Gegenseite zum Lager 18, 19 erfolgt die Abdichtung zwischen Saug- und Druckseite und die axiale Fixierung des Pumpenläufers 13 durch einen Dichtring 20, auf dem sich ein Gleitring 21 federnd abstützt. Das an der Außenseite dünnwandige zylindrische Pumpengehäuse 8 bildet mit einer inneren Zylinderfläche 22 im Gasturbinenläufer 1 einen engen Luftspalt 12, wobei im Überdeckungsbereich Dauermagnete 23 in die Zylinderfläche 22 des Gasturbinenläufers 1 eingelassen sind.A built gas turbine rotor or rotor 1 with a first compressor blading 2 is shown. Struts 4 and 5 are attached to the gas turbine housing 3 and have a streamlined nose 6 in the inlet of the gas turbine, to which the pump housing 8 is fastened by means of a screw connection 7. A seal is provided by a sealing ring 9. The strut 5 shown below contains a suction line 10 which opens into a central channel 11 in the nose 6, which merges into the axial inlet of the pump rotor 13. The pump rotor 13 is in one piece with an essentially radial blading 14 verses hen, however, which has an axial outlet which is connected to a coaxial annular space 15 in the nose 6. This annular space in turn hangs together with a delivery line 16 in the strut 4 shown above and merges into a channel 17 on the outside of the gas turbine housing 3. The pump rotor 13 is supported by a central ball 18 on a bearing body 19 in the pump housing 8. On the opposite side to the bearing 18, 19, the sealing between the suction and pressure side and the axial fixation of the pump rotor 13 is carried out by a sealing ring 20 on which a slide ring 21 is resiliently supported. The outside of the thin-walled cylindrical pump housing 8 forms a narrow air gap 12 with an inner cylinder surface 22 in the gas turbine rotor 1, permanent magnets 23 being let into the cylinder surface 22 of the gas turbine rotor 1 in the overlap region.

Claims (9)

1. A liquid pump in a completely enclosed pump casing (8) including a non-magnetic outer wall, in which the at least partially magnetizable pump rotor (13) is non-contactingly driven via a rotating magnetic field produced by an externally driven magnetized rotor (1) an inwardly extending cylindrical recess of which coaxially surrounds the pump casing (8) and which at its cylindrical face (22) is polarized as a permanent magnet, characterized in that the pump rotor (13) is formed integrally with its blading (14), is provided with an uninterrupted cylindrical outer face (24) and is axially and radially supported on one side by a single bearing (18, 19).
2. A liquid pump according to claim 1, characterized in that the external rotor (1) is provided with permanent magnets (23) flush-mounted at its cylindrical face (22).
3. A liquid pump according to claim 1 or claim 2, characterized in that the pump rotor (13) and/or the external rotor (1) is,, or are, permanently magnetized in spaced sectors thereof.
4. A liquid pump according to claim 3, characterized in that the magnetization of the sectors is intensified by providing the pump rotor (13) and/or the external rotor (1) with radial grooves extending between the sectors of different polarities.
5. A liquid pump according to any of the claims 1 to 4, characterized in that the pump rotor (13) is made of cobalt-sanarium, preferably in the form of a sintered substance.
6. A liquid pump according to any of the claims 1 to 5, in which the liquid is arranged to flow substantially radially through the pump rotor (14), characterized in that the pump is provided with sealing and sliding rings (20, 21) disposed perpendicularly to the pump axis between its suction and delivery sides and on the side opposite thereto with the - centering - support bearing (18, 19).
7. A liquid pump according to any of the claims 1 to 6, characterized in that the pump casing is made of a silicon-nitride ceramic material.
8. Application of a liquid pump as claimed in any of the claims 1 to 7 as an accessory of a gas turbine or a gas turbine engine, characterized in that the pump casing (8) is arranged in the hub region of the gas turbine coaxially stationary in relation thereto, and in that the external rotor (1) is joined to a bladed gas turbine rotor.
9. Application of a liquid pump according to claim 8, characterized in that the pump casing (8) is secured to the gas turbine housing (3) by a a plurality of struts (4, 5) having a flow-favouring profile and especially formed, in their entirety, as a pre-guide wheel, with individual ones at least of these struts containing suction and delivery passages (10, 16).
EP82101047A 1981-03-21 1982-02-12 Magnetic drive for a liquid pump Expired EP0060993B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3111212 1981-03-21
DE19813111212 DE3111212A1 (en) 1981-03-21 1981-03-21 LIQUID PUMP

Publications (3)

Publication Number Publication Date
EP0060993A2 EP0060993A2 (en) 1982-09-29
EP0060993A3 EP0060993A3 (en) 1983-04-27
EP0060993B1 true EP0060993B1 (en) 1985-10-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101047A Expired EP0060993B1 (en) 1981-03-21 1982-02-12 Magnetic drive for a liquid pump

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DE (2) DE3111212A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2671141B1 (en) * 1990-12-31 1993-08-20 Europ Propulsion TURBOPUMP WITH SINGLE FLOW INTEGRATED GAVAGE.
FR2671143B1 (en) * 1990-12-31 1993-04-23 Europ Propulsion TURBOPUMP WITH INTEGRATED FUEL IN AXIAL FLOW.
FR2671142B1 (en) * 1990-12-31 1993-04-23 Europ Propulsion TURBOPUMP WITH BUILT-IN FLOW DRIFT.
DE112009000856B4 (en) * 2008-04-11 2020-10-22 Hanon Systems Rotor arrangement, electric motor and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1051123B (en) * 1955-11-09 1959-02-19 Paul Bungartz Centrifugal pump or centrifugal compressor without shaft opening
FR1339539A (en) * 1962-05-30 1963-10-11 Renault Water pump drive for hydraulically cooled engines
US3373927A (en) * 1966-06-01 1968-03-19 Carrier Corp Fluid compressor
AT307370B (en) * 1969-01-08 1973-05-25 Laing Nikolaus Device for transmitting the torque of a turbine to a pump
AT307236B (en) * 1969-12-16 1973-05-10 Beteiligungs A G Fuer Haustech Fluid flow machine, especially centrifugal pump
FR2082745A5 (en) * 1970-05-25 1971-12-10 Comp Generale Electricite

Also Published As

Publication number Publication date
EP0060993A3 (en) 1983-04-27
EP0060993A2 (en) 1982-09-29
DE3111212A1 (en) 1982-09-30
DE3266733D1 (en) 1985-11-14

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