EP0635101B1 - Elektrisch angetriebene Hochgeschwindigkeitspumpe - Google Patents

Elektrisch angetriebene Hochgeschwindigkeitspumpe Download PDF

Info

Publication number
EP0635101B1
EP0635101B1 EP94904940A EP94904940A EP0635101B1 EP 0635101 B1 EP0635101 B1 EP 0635101B1 EP 94904940 A EP94904940 A EP 94904940A EP 94904940 A EP94904940 A EP 94904940A EP 0635101 B1 EP0635101 B1 EP 0635101B1
Authority
EP
European Patent Office
Prior art keywords
rotor
stator
magnets
pump
coils
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 - Lifetime
Application number
EP94904940A
Other languages
English (en)
French (fr)
Other versions
EP0635101A1 (de
Inventor
José MURGA
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0635101A1 publication Critical patent/EP0635101A1/de
Application granted granted Critical
Publication of EP0635101B1 publication Critical patent/EP0635101B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/16—Propellers having a shrouding ring attached to blades
    • B63H2001/165—Hubless propellers, e.g. peripherally driven shrouds with blades projecting from the shrouds' inside surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H2023/005—Transmitting power from propulsion power plant to propulsive elements using a drive acting on the periphery of a rotating propulsive element, e.g. on a dented circumferential ring on a propeller, or a propeller acting as rotor of an electric motor

Definitions

  • the invention further relates to a boat powered by such pumps.
  • an electrically driven pump is separate from the motor to which it is mechanically coupled by a rotating shaft.
  • two machines are coaxial in order to avoid returns by gears or other transmission devices.
  • this provision presents particular disadvantages in the case of axial flow pumps.
  • Both machines can be arranged in line with each other and separated by a bend in the fluid inlet or outlet duct, but in this case, the tree constitutes an obstacle to the flow in the elbow.
  • the electric motor can be placed in a bulb placed in the center of the duct where the fluid passes, this bulb supporting a large propeller at one of its extremities.
  • the fluid flow lines also undergo large radial deviations to bypass the bulb. All of these deviations result in energy losses and an increase in space and represent an obstacle to an increase in speed fluid flow.
  • high speeds pose problems of shaft and pump impeller stability, requiring reinforcement of supports of the shaft and therefore further increase the pressure losses in the fluid.
  • a known solution consists in use a rotor common to the pump and the electric motor, having a part tubular unit which serves as a pump wheel and a peripheral part which includes the rotor elements of the electric motor.
  • a axial pump of the type specified in the preamble is illustrated in Figures 5-13 of European patent application N ° 0 169 682.
  • the training takes place at using a squirrel cage type motor.
  • the result is a rotor relatively long compared to its diameter and, moreover, this rotor cannot rotate at very high speeds. Therefore, the axial duct and the vanes of the pump must also be relatively long to transmit a sufficient fluid power.
  • the blades are formed by an axial body in the form of a screw, placed in the central duct and having an elongated central element which has the disadvantage of reducing the cross-section of passage of the fluid.
  • US Patent No. 3,719,436 describes a pump having a stator provided with a sealed envelope and a rotor disposed in said sealed envelope.
  • This rotor is provided with a tubular central part carrying vanes.
  • This engine is same kind as the one described above, having an induction motor which leads to similar disadvantages.
  • the pump vanes are carried by the wall of the central duct, so that the center of the duct can be free.
  • the publication DE-A-3 718 954 describes a propeller without a hub for a boat or blower, the blades of which are carried by a rotating outer ring cylindrical mounted in a bearing.
  • This propeller can be powered by a conventional electric motor with permanent magnet rotor constituted by the blade support ring. This design does not allow obtain high rotor speeds.
  • EP-A-0 404 299 relates to a brushless motor having a rotor with eight arms, each of which carries a permanent magnet with axial polarization.
  • the stator has more magnets with switchable polarity thanks to a coil. Switching is controlled by mechanical means optical or magnetic depending on the position of the rotor. This coupled engine to a pump does not improve the performance of said pump.
  • Publication DE-A-4 111 466 relates to a centrifugal pump associated with a direct current motor where the fluid passes in an annular passage between the stator and the rotor, which is not the case in the pump which is the subject of the invention.
  • the publication US-A-1 347 732 relates to a centrifugal electric pump where the stator is cooled by a water jacket fed by water leaks pumped.
  • the present invention aims to improve a combination of an axial pump and an electric motor having a rotor common with concentric arrangement of hydraulic and electrical parts, so as to allow very high speeds of rotation, ensuring a power high pump size with limited dimensions.
  • a particular purpose is to ensure the flow of the pumped fluid as straight as possible and free of obstacles slowing the flow.
  • the invention relates to an axial pump as defined in claim 1.
  • the vanes transmitting motive power to fluid can be distributed along a relatively short central duct.
  • said magnets are arranged in pairs, the two magnets each pair being separated in axial direction by an interval in which these magnets generate a substantially uniform magnetic field directed from one magnet to the other, and the stator windings are formed by flattened coils arranged in a circular row in a radial plane located in said intervals between the magnets of the rotor, so that each winding is substantially perpendicular to the lines of the magnetic field in said intervals.
  • each stator coil can be surrounded by a conduit peripheral where a cooling fluid circulates.
  • Another aspect of the invention relates to a boat powered by pumps as defined in claims 1-3, comprising at least two propulsion ducts arranged substantially longitudinally inside the boat and crossing each one of said pumps, each conduit having an inlet at the front of the boat and an exit directed longitudinally aft of the boat. Entrance and the output of each of the two propulsion conduits are located respectively on one side and the other of a central longitudinal axis of the boat.
  • the pump shown in Figures 1 and 2 includes a rotating rotor 1 inside a substantially cylindrical stator 2 whose axis longitudinal constitutes the axis of rotation 3 of the rotor.
  • Stator 2 has an axial inlet mouth 4 connected to a tube suction 5 and, on the opposite side, an axial outlet mouth 6 connected to a discharge pipe 7, pipes 5 and 7 can be any tubes belonging to the liquid circuit pumped which flows in the direction of arrow A.
  • the stator has a sealed inner casing 8, surrounding the rotor 1 and comprising an annular row of electric coils 9 flattened according to a radial plane, and an outer casing 10 provided with the mouths 4 and 6 and ensuring the mechanical connection between the inner envelope 8 and the pipes 5 and 7.
  • rotor 1 is common to the pump proper, consisting of the central part of the machine, and the electric motor which directly surrounds this pump.
  • rotor 1 comprises a tubular central part 11 whose ends are mounted on the stator by means of bearings 12 and 13 such as ball bearings or magnetic or pneumatic bearings.
  • This tubular part 11 defines a straight central duct 14 having a peripheral wall 15 which, in the example shown, is a constant section cylinder, equal to the inner section of the pipes 5 and 7.
  • a central duct with variable section, especially for the pumping a compressible fluid.
  • the central duct 14 contains a series of helical vanes 16 which are prominent on the peripheral wall 15 and which do not extend to the axis of rotation 3, so that there remains a free central zone 17 in the vicinity of the axis 3, over the entire length of the pump.
  • This free zone facilitates the manufacture of the blades 16 and above all eliminates a large part of the risk of obstruction of the pump by foreign bodies. Thanks to the absence of a central body in this area, the liquid particles practically do not undergo any radial deviation. Furthermore, thanks at a substantially constant section, their speed varies little, at except for the tangential component of the helical movement which can be imparted to them by the blades 16. Thanks to the very great rotor rotation speed, the blade pitch can be relatively short, i.e.
  • the angle of inclination of the blades compared to a radial plane is weak in the majority of the section transverse of conduit 14 (this angle is higher in the areas close to axis 3).
  • 11 advantageously follows that the pressure exerted by the vanes on the fluid has a strong axial component and a weak tangential component.
  • the step helix may be less than the diameter of the duct 14.
  • a friction ring 18 cooperating with an annular seal in rubber 19 mounted on the stator, to seal the liquid circuit.
  • the tightness of these joints does not need to be absolute and should simply prevent significant leaks from the discharge at suction, the seal against the outside being ensured by the casing 8 of the stator, the interior of which can be maintained under vacuum or contain a light gas under low pressure.
  • the rotor 1 Around the tubular central part 11, the rotor 1 has two parallel discs 21 and 22 symmetrical to each other and separated by an axial interval 23 in which the circular row of stator coils 9.
  • the discs 21, 22 carry pairs of permanent magnets 24, 25 which are polarized parallel to axis 3 and arranged so that the pole north N of each magnet 24 of the disc 21 is opposite the pole south S of the corresponding magnet 25 in disc 22.
  • the magnetic field H is substantially uniform and constant in the interval between the two magnets.
  • a ferromagnetic yoke (not shown) can be provided to close the field lines in the rotor or in the stator, depending on the materials used. In this example, it is expected eight pairs of magnets 24, 25 equidistant from each other on the around the rotor.
  • the sealed inner casing 8 of the stator 2 is subdivided into eight sector shells 8c, each shell covering 45 ° and supporting a coil 9. These shells together form two circular rings 8a and 8b which support the bearings 12, 13.
  • the outer housing 10 can be produced in two semicircular parts joined in an axial plane. 8c shells are crossed by pairs of supply conductors 26, 27 which pass between the casing 8 and the casing 10 and pass through this last to be connected to an electronic switching device 28 which controls the supply of each coil 9 from a source of electrical energy 29 with direct voltage.
  • Each coil 9 has a flattened shape and has a ferromagnetic core 30, separated from the magnets 24, 25 by weak air gaps 31, 32 and surrounded by circular electric windings 33 whose diameter is approximately equal to the diameter of the magnets.
  • coils and magnets may have shapes any different from the circular shape shown here.
  • the coils 9 are also eight in number, so that all the pairs of magnets 24, 25 of the rotor are in same time in front of a coil 9.
  • the electronic switching device 28 receives, by conductors 34 and 35, the electrical output signals from two sensors optics 36 and 37 cooperating with circular tracks 38 and 39 arranged on a front face of the rotor 1, which rotates in the direction of arrow B.
  • Each track 38, 39 has marks angular formed by white areas 40, 41 and areas black 42, 43, the output signal of each sensor 36, 37 being high or low depending on whether a white area or a black area is in front of this sensor.
  • the same output signals can be obtained with sensors of another type, for example magnetic sensors cooperating with zones respectively metallic and non-metallic tracks 38 and 39.
  • the device 28 is arranged to connect the supply of the coils 9 to the source 29 in a first direction when the signal from sensor 36 is high and in the opposite direction when the signal from sensor 37 is high, the coil supply being cut off when the two signals are low.
  • This principle used in so-called electric motors “autosynchronous”, is represented schematically in FIG. 4 by the two double switches 44 and 45 which are closed respectively by the high signals from sensors 36 and 37. These switches can be formed by thyristors.
  • Figure 3 shows the constant magnetic field H and substantially uniform between two magnets 24 and 25 of the rotor, this field passing through the coil 9 which passes between the magnets.
  • F a resulting force perpendicular to the lines of the field H.
  • This force is a attraction or repulsion according to the direction of the current i.
  • each elementary section of a conductor with the current i in the coil 9 undergoes a elementary force f perpendicular to this section and to H, in accordance to Lorentz's laws.
  • each force F has a radial direction.
  • the forces f have a non-zero resultant F when part of the coil 9 found outside of this area. If the pairs of magnets 24, 25 and the coils 9 are at the same distance from axis 3, each force F has a tangential direction.
  • each force F exerted on a coil corresponds to a reaction F 'of opposite direction which acts on the pair of magnets 24, 25 and thus rotates the rotor 1.
  • the boundaries between white areas 40, 41 and black areas 42, 43 of tracks 38, 39 are arranged angularly, with respect to the pairs magnets 24, 25 of the rotor, so as to produce a switching of the current i in each coil as a function of the angle of rotation ⁇ of the rotor as shown in Figure 5.
  • a first phase 46 where the pairs of magnets are between two successive coils, the coil supply is cut off.
  • a second phase 47 where the magnets approach the coils, the sensor 36 is opposite a white zone 40 and closes the switches 44 to make pass a current + i (assumed to be constant for simplicity) in each coil.
  • the current is then cut during a brief phase 48 where the coils are practically aligned with the magnets and then an area white 41 passes in front of sensor 37, which closes the switches 45 and passes a current -i through the coils during a phase 49. Then the switching cycle starts again, each cycle covering an angle ⁇ of 45 °, representing 360 ° divided by the number pairs of magnets. Note that the total duration of the phases of attraction 47 and repulsion 49 covers most of the duration of a cycle.
  • a switch can be provided on-off which delivers an electrical impulse to the coils at when we switch it on.
  • the number of coils 9 of the stator is not necessarily equal to the number of pairs of magnets 24, 25 of the rotor.
  • a number of coils smaller or larger by one than the number of pairs of magnets ensures that at least one coil is active in each angular position of the rotor, which eliminates any starting problem and reduces the amplitudes of variations of the current consumed.
  • different solutions are possible to order successively the supply cycles of the coils.
  • a first solution is to provide each coil 9 with its own device switching 28 and its own sensors 36 and 37 cooperating with tracks 38 and 39 in Figure 2.
  • a simpler solution as to its construction consists in using a single sensor and a device more sophisticated switching electronics.
  • This sensor can detect equidistant marks on a circular track of the rotor, the gap angular between these marks being equal to the difference between the angle which separates two successive magnets and the angle which separates two coils successive.
  • the signal delivered by such a sensor is sufficient to that the switching device produces cycles such as that of Figure 5, with the appropriate angular offsets for each coil.
  • a machine arranged in the same way as the pump described above can operate in an electric turbogenerator if the central part of its rotor is arranged in an axial turbine, to transform into electrical energy kinetic energy and / or pressure of the fluid flowing in the central duct 14. Thanks to the rectilinear arrangement of this duct, such a turbine can easily be interposed on a pipe, for example in a water distribution network.
  • a pump according to the invention can be used generally in all cases of axial and centrifugal pumps, also well with liquids than with gases. She is particularly advantageous in cases where the fluid used is not specially pure, thanks to the rectilinear geometry of its central duct and to the free opening in the center of this duct.
  • An application particularly interesting is that of the electric propulsion of surface or submarine boats.
  • Figure 6 shows the layout of a pump according to FIGS. 1 and 2 in a tapered tubular body 51 intended to be fixed externally to the hull 55 of a boat such than an underwater vehicle.
  • the body 51 may have an envelope outer 52 substantially cylindrical at the front and tapered at the rear.
  • the central duct 14 of the rotor is preceded by an inlet trumpet 53 and followed by a cylindrical outlet pipe 54 through which the water is ejected at high speed to propel the boat by reaction.
  • FIG. 7 and 8 schematically illustrate another application, where two axial pumps 60a and 60b according to the invention are mounted at aboard a boat 61 to propel it by water jets A and B.
  • Each pump is connected to a respective propulsion duct 62a, 62b having an inlet 63a, 63b at the front of the boat and an outlet 64a, 64b at the rear to produce jet A, B.
  • each exit is directed parallel to the longitudinal axis 65 of the boat, but it can possibly be adjustable to facilitate maneuvers Of the boat.
  • the cross arrangement of conduits 62a and 62b according to FIG. 8 also makes it possible to facilitate the maneuvers by acting on the speed control of pumps 60a and 60b.
  • a pump according to the invention can also be designed to work with a gaseous fluid, in especially as a compressor or as a blower.
  • the central duct can have a large diameter and its cross section may vary gradually along the duct depending on the compression imposed on the gas by the particular configuration of the blades.
  • a liquid circuit of cooling can go through pipes in the interval between the box 10 and the inner envelope 8 to go circulate in conduits 50 (fig. 1) surrounding the coils 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Claims (4)

  1. Elektrisch betriebene Hochgeschwindigkeitsaxialpumpe, die folgendes aufweist:
    einen mit einem dichten Gehäuse (8) versehenen Stator (2),
    einen Rotor (1), der im Inneren des Statorgehäuses so angeordnet ist, daß er um eine Rotationsachse (3) drehbar ist, wobei der Rotor (1) mit folgendem ausgestattet ist:
    einem zentralen rohrförmigen Teil (11), der eine Außenwand (15) eines zentralen Kanals (14) für den Durchgang eines ständigen axialen Flüssigkeitsstromes bildet, und der in diesem Kanal schraubenflächenförmige Schaufeln (16) trägt,
    und Magneten, die mit elektrischen Wicklungen (33) des Stators zusammenarbeiten, die sich im Inneren des dichten Gehäuses (8) befinden,
    wobei die Schaufeln an der Außenwand (15) des zentralen Kanals (14) befestigt sind und sich nicht bis zur Rotationsachse hin erstrecken, so daß der Kanal einen freien zentralen Bereich (17) auf seiner ganzen Länge aufweist,
    dadurch gekennzeichnet, daß
    sie mit elektromagnetischen Antriebseinrichtungen versehen ist, die paarweise angeordnete und um den zentralen rohrförmigen Teil (11) verteilte Magnete (24,25) aufweisen, wobei zwei Magnete jedes Paares in axialer Richtung durch einen Zwischenraum (23) getrennt sind, die Wicklungen (33) des Stators (2) durch flache Spulen (9) gebildet sind, die in kreisförmiger Reihenfolge auf einer radialen Ebene liegen, die in den Zwischenräumen (23) zwischen den Magneten des Rotors liegt, so daß jede Wicklung etwa rechtwinklig zu den magnetischen Feldlinien in den Zwischenräumen liegt, wobei die Antriebseinrichtungen außerdem Steuereinrichtungen aufweisen, mit mindestens einem Lagesensor (35), der auf dem Stator befestigt ist und der ein charakteristisches Signal über die Winkellage des Rotors liefert und des weiteren elektronische Einrichtungen für die Stromumschaltung (28), die dazu dienen, individuell die Statorwicklungen (33) in Abhängigkeit des Signals des oder der Lagesensoren ein- und auszukoppeln,
    daß der Rotor (1) eine Länge (L) hat, die kleiner als sein äußerer Durchmesser (D) ist, und daß die Steigung der Schaufeln kleiner ist als der zentrale Kanal.
  2. Pumpe nach Anspruch 1,
    dadurch gekennzeichnet, daß
    die Magnete des Rotors (1) elektromagnetisch sind, und ein etwa gleichförmiges, von einem Elektromagnet zum anderen gerichtetes magnetisches Feld erzeugen.
  3. Pumpe nach Anspruch 1,
    dadurch gekennzeichnet, daß
    jede der Wicklungen (9) des Stators von einem peripheren Kanal (50) umgeben ist, in dem eine Kühlflüssigkeit zirkuliert.
  4. Boot mit Antrieb bzw. Vortrieb durch Pumpen nach einem der Ansprüche 1 bis 3, mit mindestens zwei Vortriebskanälen (62a,62b), die etwa in Längsrichtung im Bootsinneren (61) angeordnet sind, wovon jeder durch eine der Pumpen (60a,60b) verläuft, wobei jeder Kanal einen Eintritt am Bootsvorderteil und einen in Längsrichtung verlaufenden Austritt am Bootshinterteil hat,
    dadurch gekennzeichnet, daß
    der Eintritt (63a,63b) und der Austritt (64a,64b) von jedem der zwei Vortriebskanäle jeweils beiderseits einer Mittellängsachse (65) des Bootes liegen.
EP94904940A 1993-02-03 1994-02-03 Elektrisch angetriebene Hochgeschwindigkeitspumpe Expired - Lifetime EP0635101B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH304/93 1993-02-03
CH00304/93A CH688105A5 (fr) 1993-02-03 1993-02-03 Ensemble pompe ou turbine à flux axial et machine électrique.
PCT/CH1994/000023 WO1994018458A1 (fr) 1993-02-03 1994-02-03 Pompe axiale a grande vitesse a entrainement electrique, et bateau propulse par de telles pompes

Publications (2)

Publication Number Publication Date
EP0635101A1 EP0635101A1 (de) 1995-01-25
EP0635101B1 true EP0635101B1 (de) 1998-05-06

Family

ID=4183955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94904940A Expired - Lifetime EP0635101B1 (de) 1993-02-03 1994-02-03 Elektrisch angetriebene Hochgeschwindigkeitspumpe

Country Status (6)

Country Link
US (1) US5484266A (de)
EP (1) EP0635101B1 (de)
JP (1) JPH07509040A (de)
CH (1) CH688105A5 (de)
DE (1) DE69410028T2 (de)
WO (1) WO1994018458A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0860046B1 (de) * 1996-09-10 2003-02-26 Levitronix LLC Rotationspumpe
US5951262A (en) * 1997-04-18 1999-09-14 Centriflow Llc Mechanism for providing motive force and for pumping applications
GB2338516B (en) * 1997-04-18 2001-11-28 Centriflow Llc Mechanism for providing motive force and for pumping applications
FR2768119B1 (fr) 1997-09-08 1999-11-12 Technicatome Propulseur naval a helice centrale et moteur asynchrone discoide
FR2788032B1 (fr) * 1998-12-30 2002-03-22 Jeumont Ind Dispositif de propulsion d'un batiment naval
AU6066600A (en) * 1999-07-01 2001-01-22 Mccord Winn Textron Inc. Vertical brushless motor applications
DE10022208A1 (de) * 2000-05-06 2001-11-08 Pierburg Ag Sekundärluftgebläse für eine Brennkraftmaschine
US6361281B1 (en) * 2000-08-22 2002-03-26 Delphi Technologies, Inc. Electrically driven compressor with contactless control
PT1545970E (pt) * 2002-10-04 2007-06-04 Karl-Josef Becker Propulsão por jacto de água para veículos aquáticos.
US7385303B2 (en) * 2005-09-01 2008-06-10 Roos Paul W Integrated fluid power conversion system
GB0700128D0 (en) * 2007-01-04 2007-02-14 Power Ltd C Tidal electricity generating apparatus
DE102010018804A1 (de) * 2010-04-29 2011-11-03 Voith Patent Gmbh Wasserturbine
EP2594479A1 (de) * 2011-11-18 2013-05-22 Hamilton Sundstrand Corporation Felgenbetriebenes Strahlruder mit Propellerantriebsmodulen
US20120175885A1 (en) * 2011-12-02 2012-07-12 Peese, Inc. Rotating Impeller Systems and Methods of Using Same
US9227709B1 (en) * 2014-11-12 2016-01-05 Ecole Polytechnique Federale De Lausanne (Epfl) Underwater propelling device for underwater vehicle
DE102015000259B4 (de) * 2015-01-16 2016-12-29 Cayago Gmbh Schwimm- und Tauchhilfe
JP2020128745A (ja) 2019-02-01 2020-08-27 ホワイト ナイト フルイド ハンドリング インコーポレーテッドＷｈｉｔｅ Ｋｎｉｇｈｔ Ｆｌｕｉｄ Ｈａｎｄｌｉｎｇ Ｉｎｃ． ロータを支承し、当該ロータを磁気的に軸線方向に位置決めするための磁石を有するポンプ、及びこれに関連する方法
CN112814922A (zh) * 2021-02-07 2021-05-18 江苏海事职业技术学院 一种磁驱动式喷水推进泵
US11692513B2 (en) * 2021-11-01 2023-07-04 Yuriy Radzikh Electric jet engine

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1714330A (en) * 1929-05-21 Air-lift pump
US1347732A (en) * 1919-03-25 1920-07-27 Cooper Thomas Lancelot Reed Combined motor-pump
US2113213A (en) * 1936-06-08 1938-04-05 Roy E Leonard Fluid operated pump
US2274274A (en) * 1939-03-17 1942-02-24 Albert R Pexxillo Fluid pump and metering device
NL89022C (de) * 1951-06-06
US2697986A (en) * 1952-04-05 1954-12-28 Jr James M Meagher Axial flow glandless impeller pump
US3119342A (en) * 1961-06-19 1964-01-28 Fostoria Corp Motor driven pumps
US3143972A (en) * 1963-02-06 1964-08-11 Watt V Smith Axial flow unit
GB1094895A (en) * 1963-08-30 1967-12-13 Plessey Uk Ltd Improvements in or relating to motor-driven pump units
US3719436A (en) * 1970-09-22 1973-03-06 Gorman Rupp Co Axial flow pump
DE2726948A1 (de) * 1977-06-15 1979-01-04 Papst Motoren Kg Kollektorloser gleichstrommotor mit optoelektronischer vorrichtung
DE3583078D1 (en) * 1984-07-13 1991-07-11 John Leishman Sneddon Fluidmaschine.
DE3718954A1 (de) * 1987-06-05 1988-12-22 Uwe Gartmann Propeller-anordnung, insbesondere fuer schiffsantriebe
GB8907216D0 (en) * 1989-03-30 1989-05-10 Cavanagh Patrick E Circumferential motor
EP0452538B1 (de) * 1990-02-06 1994-12-21 Reinhard Gabriel Strahlantrieb für Wasser- und Luftfahrzeuge sowie Umwälzpumpen
US5112200A (en) * 1990-05-29 1992-05-12 Nu-Tech Industries, Inc. Hydrodynamically suspended rotor axial flow blood pump
DE4111466A1 (de) * 1991-04-09 1992-10-15 Speck Pumpenfabrik Walter Spec Kreiselpumpe mit spaltrohrmotor

Also Published As

Publication number Publication date
DE69410028D1 (de) 1998-06-10
EP0635101A1 (de) 1995-01-25
WO1994018458A1 (fr) 1994-08-18
DE69410028T2 (de) 1998-12-03
CH688105A5 (fr) 1997-05-15
US5484266A (en) 1996-01-16
JPH07509040A (ja) 1995-10-05

Similar Documents

Publication Publication Date Title
EP0635101B1 (de) Elektrisch angetriebene Hochgeschwindigkeitspumpe
EP0650644B1 (de) Elektromotor/rad-einheit
EP0161194B1 (de) Epizykloidale Induktionsreduzierkupplung für Maschinen mit sehr hoher Drehgeschwindigkeit
FR2817088A1 (fr) Machine tournante a butee axiale magnetique integrant une generatrice de courant
EP0695018B2 (de) Synchronmotor mit im Rotor eingebetteten Permanentmagneten
CH650661A5 (fr) Piece a main a moteur integre.
FR2499647A1 (fr) Perfectionnements aux accouplements magnetiques hermetiques
FR2715201A1 (fr) Palier magnétique et ensemble comportant une partie statorique et une partie rotorique suspendue par un tel palier.
FR2927605A1 (fr) Propulseur hydraulique a rotor peripherique ameliore.
FR2787527A1 (fr) Dispositif motorise a circulation centrifuge de fluide, tel qu'une motopompe ou un motocompresseur
EP1401705B1 (de) Von einem hohlen elektromotor angetriebener gondelwasserstrahlantrieb
FR2739148A1 (fr) Pompe entrainee magnetiquement
FR2609583A3 (fr) Generatrice sans balai comprenant un ensemble inducteur a elements polaires a griffes
EP1235332B1 (de) Einheit bestehend aus einer elektromagnetische Bremse und deren elektische Versorgung
EP1140618A1 (de) Propulsionsvorrichtung für ein marines bauwerk
FR2602925A1 (fr) Dispositif interne de ventilation pour une machine electrique tournante telle qu'un alternateur
FR2837631A1 (fr) Machine electrique a stator et/ou rotor modulaire, ensemble comprenant une telle machine et un echangeur de chaleur et vehicule automobile correspondant
WO2017125210A1 (fr) Dispositif de propulsion et de génération d'énergie pour un voilier
FR2986386A1 (fr) Rotor et machine electromagnetique comportant une turbine
FR2614367A1 (fr) Procede de stockage et d'exploitation d'energie a moto-pompe integree
FR2701610A1 (fr) Dispositif de pivotement pour rotor noyé.
FR2844550A1 (fr) Turbocompresseur avec moyen de deversement de lubrifiant
FR2582165A1 (fr) Machine multipolaire a courant continu pour utilisation en immersion
FR2776262A1 (fr) Propulseur naval a moteur central et deux jets hydrauliques
WO2024056947A1 (fr) Amplificateur de propulsion pour véhicule d'exploration sous-marine

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19941019

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI SE

17Q First examination report despatched

Effective date: 19951016

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI SE

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

Ref country code: GB

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

Effective date: 19980506

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69410028

Country of ref document: DE

Date of ref document: 19980610

ITF It: translation for a ep patent filed

Owner name: INT.RIF. PER MANCANZA DESIGNAZIONE IT;DOTT. FRANCO

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: CABINET ROLAND NITHARDT CONSEILS EN PROPRIETE INDU

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19980506

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990201

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990212

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19990305

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19990514

Year of fee payment: 6

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

Ref country code: SE

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

Effective date: 20000204

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

Ref country code: LI

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

Effective date: 20000229

Ref country code: DE

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

Effective date: 20000229

Ref country code: CH

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

Effective date: 20000229

EUG Se: european patent has lapsed

Ref document number: 94904940.7

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 20001031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST