EP1687201B1 - Jet propulsion engine - Google Patents

Jet propulsion engine Download PDF

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Publication number
EP1687201B1
EP1687201B1 EP04802733A EP04802733A EP1687201B1 EP 1687201 B1 EP1687201 B1 EP 1687201B1 EP 04802733 A EP04802733 A EP 04802733A EP 04802733 A EP04802733 A EP 04802733A EP 1687201 B1 EP1687201 B1 EP 1687201B1
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EP
European Patent Office
Prior art keywords
rotor
bearing
housing
jet propulsion
propulsion engine
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 - Fee Related
Application number
EP04802733A
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German (de)
French (fr)
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EP1687201A1 (en
Inventor
Reinhard Gabriel
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.)
Voith Turbo Advanced Propeller Technologies GmbH and Co KG
Original Assignee
Air Fertigung Technologie GmbH and Co KG
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
Priority to DE10353566A priority Critical patent/DE10353566A1/en
Application filed by Air Fertigung Technologie GmbH and Co KG filed Critical Air Fertigung Technologie GmbH and Co KG
Priority to PCT/DE2004/002519 priority patent/WO2005049420A1/en
Publication of EP1687201A1 publication Critical patent/EP1687201A1/en
Application granted granted Critical
Publication of EP1687201B1 publication Critical patent/EP1687201B1/en
Expired - Fee Related legal-status Critical Current
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H25/00Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/16Propellers having a shrouding ring attached to blades
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H23/00Transmitting power from propulsion power plant to propulsive elements
    • B63H23/22Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
    • B63H23/24Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H5/00Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/16Propellers having a shrouding ring attached to blades
    • B63H2001/165Hubless propellers, e.g. peripherally driven shrouds with blades projecting from the shrouds' inside surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H23/00Transmitting power from propulsion power plant to propulsive elements
    • B63H2023/005Transmitting 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H25/00Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B63H2025/425Propulsive elements, other than jets, substantially used for steering or dynamic anchoring only, with means for retracting, or otherwise moving to a rest position outside the water flow around the hull

Abstract

The invention relates to a jet propulsion engine, especially for watercraft, comprising a rotor (1) on the inside of which blades (2) are disposed, and a housing (3) in which the rotor (1) is rotationally received. The bearing system between the rotor (1) and the housing (3) is produced from carbide that is resistant to sea-water.

Description

  • Die Erfindung betrifft einen Strahlantrieb, insbesondere für Wasserfahrzeuge mit einem Rotor, an dessen Innenseite Schaufeln angeordnet sind und einem Gehäuse, in dem der Rotor drehbar gelagert ist.The invention relates to a jet propulsion, in particular for watercraft with a rotor, on the inside of which blades are arranged and a housing in which the rotor is rotatably mounted.
  • Ein derartiger Strahlantrieb ist zum Beispiel aus der US 2001/029133 die alle Merkmale des Oberbegriffs des Anspruchs 1 offenbart, und der DE 39 12 910 C2 bekannt, wobei hier der Rotor in Form eines Rohres mit innenliegender Schnecke ausgebildet ist.Such a jet propulsion system is known, for example, from US 2001/029133 which discloses all the features of the preamble of claim 1, and DE 39 12 910 C2, in which case the rotor is designed in the form of a tube with an internal screw.
  • Der Antrieb des Motors kann mechanisch oder in Form eine Elektroringmotors bei dem der Rotor somit einen Teil des Elektromotors darstellt realisiert sein.The drive of the motor can be realized mechanically or in the form of an electric ring motor in which the rotor thus forms part of the electric motor.
  • Mit steigenden Durchmesser des Rotors erhöht sich das Problem der Lagerung zwischen Rotor und Gehäuse.With increasing diameter of the rotor increases the problem of storage between the rotor and housing.
  • Kugel- oder Rollenlager müssen insbesondere bei der Verwendung des Strahlantriebes für Wasserfahrzeuge gegen Eindringen von Wasser abgedichtet werden.Ball or roller bearings must be sealed in particular when using the jet propulsion for watercraft against ingress of water.
  • Umfangreiche Versuche haben ergeben, daß eine Abdichtung zwar mit einem hohen Aufwand erzielt werden kann, jedoch sich die Zeitstandfestigkeit als sehr großes Problem herausstellte, da mit eintretender Undichtigkeit in kürzester Zeit die Beschädigung der Lagerung eintrat.Extensive tests have shown that although a seal can be achieved with great effort, but the creep strength proved to be a very big problem, since with entering leak in the shortest possible time damage to the storage occurred.
  • Der Erfindung liegt daher die Aufgabe zugrunde für den oben bezeichneten Strahlantrieb eine Lagerung vorzuschlagen, die eine hohe Lebensdauer gewährleistet.The invention is therefore based on the object for the above-mentioned jet propulsion propose a storage that ensures a long service life.
  • Darüber hinaus sollte die Lagerung auch die Realisierung von großen Rotordurchmessern für leistungsstarke Strahlantriebe ermöglichen.In addition, the storage should also allow the realization of large rotor diameters for high performance jet engines.
  • Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Lagerung zwischen Rotor und Gehäuse seewasserfestes Carbid aufweist.This object is achieved in that the storage between rotor and housing seawater-proof carbide has.
  • Durch die Verwendung von seewasserfestem Carbid muß das Lager nicht mehr abgedichtet werden, so daß die Lagerschädigung bei Eintreten der Undichtigkeit von vorne herein ausgeräumt ist.By using seawater-solid carbide, the bearing no longer needs to be sealed, so that the bearing damage is cleared from the outset in the event of leakage.
  • Vorzugsweise wird Siliziumcarbid beziehungsweise Aluminiumcarbid verwendet, da diese beiden Werkstoffe, insbesondere Siliziumcarbid hohe Seewasserbeständigkeit und zum anderen die nötige Festigkeit aufweisen.Preferably, silicon carbide or aluminum carbide is used, since these two materials, in particular silicon carbide high resistance to salt water and on the other hand have the necessary strength.
  • Des weiteren ist es vorteilhaft die Lagerung zwischen Rotor und Gehäuse ausschließlich aus Carbid auszubilden, da zusätzlich für die Lagerung verwendete Werkstoffe entweder nicht korrosionsbeständig oder eine geringere Seewasserbeständigkeit aufweisen und dies somit zum vorzeitigen Verschleiß der Lagerung führen würde.Furthermore, it is advantageous to form the bearing between rotor and housing exclusively of carbide, as in addition to materials used for storage either non-corrosion resistant or have a lower seawater resistance and thus this would lead to premature wear of the storage.
  • Aufgrund der guten Gleiteigenschaften des Carbids in Verbindung mit einem Wasserfilm ist die Lagerung günstigerweise als Gleitlager ausgebildet.Due to the good sliding properties of the carbide in conjunction with a water film storage is conveniently designed as a sliding bearing.
  • Gemäß einer bevorzugten Ausführungsform ist das Lager im Rotor und/oder das Lager im Gehäuse aus mehreren Lagersegmenten gebildet.According to a preferred embodiment, the bearing in the rotor and / or the bearing in the housing is formed from a plurality of bearing segments.
  • Bei großen Lagerdurchmessern ist eine einstückige Herstellung des Lagers aus Carbid nahezu nicht möglich. Über die Herstellung der Lagerung über mehrere Lagersegmente lassen sich jedoch nahezu unbeschränkt große Durchmesser realisieren.For large bearing diameters, a one-piece production of the carbide bearing is almost impossible. About the production of storage over several bearing segments, however, can be realized almost unlimited large diameter.
  • Bei der Ausbildung der Lagerung durch mehrere Lagersegmente ist es vorteilhaft zumindest am Rotor die Lagersegmente beabstandet auszubilden, so daß durch die Fliehkraft das Wasser zwischen den Lagersegmenten jeweils nach außen gedrückt wird und sich dadurch eine Pumpwirkung ergibt.In the formation of storage by a plurality of bearing segments, it is advantageous at least on the rotor, the bearing segments spaced form, so that by the centrifugal force Water between the bearing segments is pressed outwards and thereby results in a pumping action.
  • Durch die Pumpwirkung sind somit die Lagersegmente zwangsläufig umspült, was zu einer verbesserten Wärmeabfuhr führt.As a result of the pumping action, the bearing segments are thus inevitably lapped, which leads to improved heat dissipation.
  • Insbesondere bei der Ausbildung als Elektroringmotor umschließt das Gehäuse den Rotor derart, daß sich ein Hohlraum zwischen der Außenseite des Rotors und der Innenseite des Gehäuses ergibt.In particular, in the training as Elektroringmotor the housing surrounds the rotor such that there is a cavity between the outside of the rotor and the inside of the housing.
  • Bei dieser Ausführungsform ist es günstig auf der einen Seite der Lagerung die Lagersegmente am Rotor und auf der gegenüber liegenden Seite die Lagersegmente am Gehäuse zu beabstanden, so daß über die Pumpwirkung durch die beabstandeten Lagersegmente am Rotor das Wasser in den Hohlraum gedrückt und wieder über die beabstandeten Lagersegmente am Gehäuse nach außen gespült werden kann.In this embodiment, it is favorable on one side of the bearing bearing segments on the rotor and on the opposite side of the bearing segments on the housing to be spaced, so that the pumping action by the spaced bearing segments on the rotor, the water pressed into the cavity and back over the spaced bearing segments can be flushed on the housing to the outside.
  • Ebenso ist es jedoch auch möglich an beiden Seiten die Lagersegmente am Rotor zu beabstanden, so daß an beiden Seiten eine Pumpwirkung in Richtung des Hohlraums entsteht und den Hohlraum in Richtung Außenseite zum Beispiel durch eine Bohrung im Gehäuse oder mehrere Bohrungen im Gehäuse zu öffnen, so daß der gewünschte Durchfluß zur Kühlung der Lagerungen und des Elektroringmotors entstehen kann.However, it is also possible on both sides of the bearing segments on the rotor to space, so that on both sides of a pumping action in the direction of the cavity and the cavity towards the outside, for example, through a bore in the housing or more holes in the housing to open, so that the desired flow for cooling the bearings and the Elektroringmotors can arise.
  • Die Fixierung der Lagersegmente am Rotor beziehungsweise Gehäuse erfolgt günstigerweise durch Formschluß, zum Beispiel mit Hilfe einer Trapezgeometrie und eventuell anschließendem Verkleben.The fixation of the bearing segments on the rotor or housing is conveniently carried out by positive engagement, for example by means of a trapezoidal geometry and possibly subsequent gluing.
  • Nachfolgend wird die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert.
  • Figur 1
    zeigt eine Seitenansicht des erfindungsgemäßen Strahlantriebes,
    Figur 2
    im wesentlichen den Schnitt AA aus Figur 1, wobei Halterung und Schaufeln nicht dargestellt sind,
    Figur 3
    in vergrößerter Darstellung den unteren Teil aus Figur 2,
    Figur 4
    eine vergrößerte perspektivische Teilansicht der Lagerung im Gehäuse,
    Figur 5a und 5b
    Stirn und Seitenansicht eines Lagersegmentes für den Rotor und
    Figur 6
    einen Teilkreis der nebeneinander gereihten Lagersegmente am Rotor.
    The invention will be explained in more detail with reference to an embodiment shown in the drawings.
    FIG. 1
    shows a side view of the jet drive according to the invention,
    FIG. 2
    essentially the section AA of Figure 1, wherein the holder and blades are not shown,
    FIG. 3
    in an enlarged view the lower part of Figure 2,
    FIG. 4
    an enlarged perspective partial view of the storage in the housing,
    FIGS. 5a and 5b
    Brow and side view of a bearing segment for the rotor and
    FIG. 6
    a circle of juxtaposed bearing segments on the rotor.
  • Figur 1 zeigt in eine Seitenansicht eines Strahlantrieb für Wasserfahrzeuge, welcher auf dem Antriebskonzept eines Elektroringmotors beruht.Figure 1 shows a side view of a jet propulsion for watercraft, which is based on the drive concept of a Elektroringmotors.
  • In Schnitt ist auch Teil eines Bootsrumpfes 19 mit einer Öffnung 20 dargestellt, über die der Strahlantrieb ein und ausgefahren werden kann. Im Bootsrumpf 19 ist hierzu ein Schacht 21 ausgebildet, in dem der Strahlantrieb im eingefahrenen Zustand aufgenommen ist.In section, part of a boat hull 19 is shown with an opening 20 through which the jet drive can be extended and retracted. In the hull 19 for this purpose, a shaft 21 is formed, in which the jet drive is received in the retracted state.
  • Der Strahlantrieb weist einen Rotor 1 auf, an dessen Innenseite nach innen gerichtete Schaufeln 2 angeordnet sind. Die Schaufeln 2 sind am Rotor 1 klemmend festgelegt und können jeweils auch einzeln ausgewechselt werden.The jet drive has a rotor 1, on the inside of which inwardly directed blades 2 are arranged. The blades 2 are fixed by clamping on the rotor 1 and can each be replaced individually.
  • Der Rotor 1 ist in einem Gehäuse 3 aufgenommen, welcher wiederum mit einer Halterung 4 verbunden ist.The rotor 1 is accommodated in a housing 3, which in turn is connected to a holder 4.
  • Die Halterung 4 weist zum Gehäuse 3 hin einen Flansch 5 auf und ist über den Flansch 5 mit dem Gehäuse 3 verbunden.The holder 4 has a flange 5 towards the housing 3 and is connected via the flange 5 to the housing 3.
  • Die Halterung 4 ist als Hydraulikzylinder ausgebildet, der an seinem oberen Ende über eine Verschraubung 6 an einer Abdeckung 7 des Schachtes 21 festgelegt ist.The holder 4 is designed as a hydraulic cylinder which is fixed at its upper end via a screw 6 to a cover 7 of the shaft 21.
  • Im Boot befindet sich ein nicht dargestellter Generator oder eine andere Stromquelle, in der Regel ein Dieselgenerator, welcher den Strahlantrieb über eine Leitung 8 mit dem nötigen Strom versorgt.The boat is an unillustrated generator or other power source, usually a diesel generator, which supplies the jet engine via a line 8 with the necessary power.
  • Zum Ein- und Ausfahren sowie ur Steuerung des Strahlantriebes ist der Hydraulikzylinder 4 ist in einer Hülse 22 mit Nut 23 aufgenommen, in die ein Bolzen 24 eingreift, der wiederum über mit der Abdeckung 7 fest verbunden ist. Der Bolzen 24 und die Nut 23 bilden eine Kulissenführung, so daß im geraden Teil der Nut der Strahlantrieb ausgefahren und im spiralförmig verlaufenden Teil der Nut der Strahlantrieb gedreht wird.For retraction and extension and ur control of the jet propulsion of the hydraulic cylinder 4 is received in a sleeve 22 with groove 23 into which a pin 24 engages, which in turn is fixedly connected to the cover 7. The bolt 24 and the groove 23 form a slotted guide, so that extended in the straight part of the groove of the jet drive and is rotated in the helically extending part of the groove of the jet drive.
  • Ein- und Ausfahren sowie Steuerung können somit über den Hydraulikzylinder 4 erfolgen. Dieser weist hierzu lediglich an der Oberseite einen Einlaß 25 und Auslaß 26 auf.Retraction and extension and control can thus be done via the hydraulic cylinder 4. This has for this purpose only at the top of an inlet 25 and outlet 26.
  • An Unterseite der der Hülse 22 ist eine Dichtplatte 27 mit Dichtwulst 28 angeordnet um das Wasser aus dem oberen Teil des Schachtes zu halten.At the bottom of the sleeve 22, a sealing plate 27 is arranged with sealing bead 28 to hold the water from the upper part of the shaft.
  • Die Öffnung 20 ist über einen Lammellenrolo 29 verschließbar, welcher über einen Antrieb 30 z.B. ebenfalls in Form eines hydraulischen oder pneumatischen Zylinders verschließbar ist.The opening 20 is closable via a Lammellenrolo 29, which via a drive 30, for. also in the form of a hydraulic or pneumatic cylinder can be closed.
  • Im ausgefahrenen Zustand ist der Strahlantrieb gestrichelt dargestellt.In the extended state, the jet drive is shown in dashed lines.
  • Je nach Auslegung des Strahlantriebes kann dieser als Hauptantrieb eingesetzt werden sowie auch nur als zusätzliche Manövrierhilfe, da er problemlos um 360° schwenkbar und auch aufgrund seines geringen Gewichtes ohne weiteres ein- und ausfahrbar ausgestaltet werden kann.Depending on the design of the jet propulsion system, this can be used as the main drive and also only as an additional maneuvering aid, since it can easily be swiveled through 360 ° and, due to its low weight, can easily be turned on and pulled out.
  • Figur 2 zeigt im wesentlichen den Schnitt AA aus Figur 1, wobei lediglich das Innenleben zwischen Rotor 1 und Gehäuse 3 dargestellt ist und auf eine Darstellung der Schaufeln 2 verzichtet wurde.FIG. 2 essentially shows the section AA from FIG. 1, wherein only the inner life between the rotor 1 and the housing 3 is shown and a representation of the blades 2 has been dispensed with.
  • Figur 3 zeigt den unteren Teil aus Figur 2 in vergrößerter Darstellung.Figure 3 shows the lower part of Figure 2 in an enlarged view.
  • Der Rotor 1 besteht im wesentlichen aus den zwei Rotorteilen 1a und 1b, welche miteinander verschraubt sind und klemmend zwischen sich einen Elektromotor Läuferring 9 an seiner Außenseite zentrisch aufnehmen.The rotor 1 consists essentially of the two rotor parts 1a and 1b, which are screwed together and clamped between them receive an electric motor rotor ring 9 on its outside centric.
  • An den Seiten des Rotors sind jeweils die Halteflansche 10a und 10b zur Festlegung der Schaufelsegmente vorgesehen.The retaining flanges 10a and 10b for fixing the blade segments are respectively provided on the sides of the rotor.
  • Der Rotor 1 ist hüllenartig vom Gehäuse 3 umgeben, wobei das Gehäuse 3 ebenfalls aus zwei Gehäuseelementen 3a und 3b gebildet ist, welche miteinander ebenso wie auch die Rotorteile 1a und 1b verschraubt sind und klemmend zwischen sich einen 11 für den Elektromotor aufnehmen.The rotor 1 is surrounded like a shell of the housing 3, wherein the housing 3 is also formed of two housing elements 3a and 3b, which are screwed together as well as the rotor parts 1a and 1b and clamped between them receive an 11 for the electric motor.
  • Der Rotor 1 ist gegenüber dem Gehäuse 3 über zwei Gleitlager 12a und 12b so gelagert, daß sich zwischen Elektromotor Läuferring 9 und Statorring 11 ein minimaler Luftspalt 13 ergibt.The rotor 1 is mounted relative to the housing 3 via two slide bearings 12a and 12b so that a minimum air gap 13 results between the electric motor rotor ring 9 and the stator ring 11.
  • Die Lager 12a und 12b sind als Carbidlager in Form von Silizium- beziehungsweise Aluminiumcarbid ausgeführt.The bearings 12a and 12b are designed as carbide bearings in the form of silicon or aluminum carbide.
  • Carbid ist zum einen seewasserbeständig und hat zum anderen sehr gute Gleiteigenschaften in Verbindung mit Wasser.On the one hand, carbide is seawater resistant and on the other hand has very good slip properties in combination with water.
  • Im dargestellten Ausführungsbeispiel besteht ein Gleitlager 12a beziehungsweise 12b aus einem an seinen freien Außenseiten im wesentlichen rechtwinkeligen Rotorlager 14 sowie zwei im wesentlichen radial und axial angeordneten Gehäuselagern 15, welche an den Außenseiten des Rotorlagers 14 angeordnet sind. Bei kleinen Durchmessern können das Rotorlager 14 sowie auch die Gehäuselager 15 einstückig hergestellt werden. Bei großen Durchmessern ist nahezu nur eine mehrteilige Realisierung von Rotorlager 14 und Gehäuselagern 15 möglich.In the illustrated embodiment, a sliding bearing 12a or 12b consists of a rotor bearing 14, which is essentially rectangular on its free outer sides, and two essentially radially and axially arranged housing bearings 15, which are arranged on the outer sides of the rotor bearing 14. For small diameters, the rotor bearing 14 and the housing bearing 15 can be made in one piece. For large diameters almost only a multi-part realization of rotor bearing 14 and housing bearings 15 is possible.
  • Figur 4 zeigt schematisch in perspektivischer Ansicht die mehrteilige Ausbildung der Gehäuselager 15. Die Gehäuselager 15 sind im Querschnitt im wesentlichen trapezförmig ausgebildet, so daß sie in trapezförmige Nuten im Gehäuse eingeschoben werden können. Durch die trapezförmige Ausbildung sind die Gehäuselager somit formschlüssig im Gehäuse 3 festgelegt. Zusätzlich können diese noch verklebt werden.Figure 4 shows schematically in perspective view the multi-part design of the housing bearing 15. The housing bearings 15 are formed in cross-section substantially trapezoidal, so that they can be inserted into trapezoidal grooves in the housing. Due to the trapezoidal design, the housing bearings are thus fixed in a form-fitting manner in the housing 3. In addition, these can still be glued.
  • Nach der Festlegung werden diese nochmals geschliffen, so daß sich auch trotz der einzelnen Lagersegmente eine exakte Lagerung ergibt.After fixing these are ground again, so that there is an exact storage despite the individual bearing segments.
  • Je nach dem ob eine Durchspülung am Gehäuselager 15 erzielt werden möchte, können die Lagersegmente 15 wie in Figur 4 darstellt durch einen gewissen Abstand d jeweils beabstandet werden oder an den Lagersegmenten 15 Nuten ausgebildet werden.Depending on whether a purging on the housing bearing 15 would like to be achieved, the bearing segments 15 as shown in FIG. 4 can be spaced apart by a certain distance d or can be formed on the bearing segments 15.
  • Durch den Abstand d oder die Nuten werden somit die Lagersegmente stetig durchspült, was zu einer zusätzlichen Kühlung der Lagerung und des Elektromotors führt.By the distance d or the grooves thus the bearing segments are flushed steadily, resulting in additional cooling of the bearing and the electric motor.
  • Figur 5a zeigt im Querschnitt das Rotorlager 15, welches an seiner Innenseite eine trapezförmige Ausnehmung 16 aufweist, so daß das Lager auf einem trapezförmige Wulst am Rotor 1 befestigt werden kann.Figure 5a shows in cross section the rotor bearing 15, which has a trapezoidal recess 16 on its inner side, so that the bearing on a trapezoidal bead on the rotor 1 can be attached.
  • Die formschlüssige Festlegung von Rotorlager 14 und Gehäuselager 15 ist nur bei großen Durchmessern und der Ausbildung der Lager aus mehreren Lagersegmenten notwendig. Carbidlager mit kleinen Durchmessern brauchen lediglich verklebt werden.The positive fixing of rotor bearing 14 and housing bearing 15 is necessary only for large diameters and the formation of the bearing of several bearing segments. Carbide bearings with small diameters only need to be glued.
  • Auch die Lagersegmente des Rotorlagers 14 werden in der trapezförmige Ausnehmung 16 günstigerweise zusätzlich verklebt und anschließend überschliffen.The bearing segments of the rotor bearing 14 are also advantageously glued in the trapezoidal recess 16 and then ground.
  • Figur 5b zeigt auch die Seitenansicht eines Lagersegmentes 14 wobei zu erkennen ist, daß die Seiten des Lagerelementes 14 jeweils radial abgerundet sind.Figure 5b also shows the side view of a bearing segment 14 wherein it can be seen that the sides of the bearing element 14 are each radially rounded.
  • In Figur 6 ist ein Teilkreis der Lagerelemente 14 dargestellt, wobei zu erkennen ist, daß durch die Abrundungen seitlich an den Lagerelementen 14 sich verjüngende und dann wieder aufweitende Spalte S ergeben.FIG. 6 shows a partial circle of the bearing elements 14, wherein it can be seen that, due to the rounded portions, laterally on the bearing elements 14, tapered and then again widening gaps S result.
  • Durch diese Ausbildung der Rotorlagerelemente 14 wird eine Pumpwirkung erzielt. Die Flüssigkeit, die sich in den Spalten S befindet, wird bei der Rotation durch die Fliehkraft nach außen gedrückt und gelangt somit in den Hohlraum 17 (siehe Figur 3), welcher zwischen dem Rotor 1 und dem Gehäuse 3 entsteht.This design of the rotor bearing elements 14, a pumping action is achieved. The liquid, which is located in the gaps S, is pressed outwardly during the rotation by the centrifugal force and thus enters the cavity 17 (see FIG. 3), which arises between the rotor 1 and the housing 3.
  • Sind wie in Figur 4 auch die Gehäuselagersegmente beabstandet, kann das in den Hohlraum 17 gepumpte Wasser zwischen den Gehäuselagesegmenten 15 wieder abfließen.If, as in FIG. 4, the housing bearing segments are also spaced apart, the water pumped into the cavity 17 can flow away again between the housing segments segments 15.
  • Ebenso ist es auch möglich am Gehäuse 3 eine Bohrung 18 vorzusehen, durch die das über das Rotorlager 14 eingepumpte Wasser wieder austreten kann.Likewise, it is also possible on the housing 3 to provide a bore 18, through which the water pumped via the rotor bearing 14 can emerge again.
  • Bei sehr großen Antrieben kann auch alternativ an die Bohrung 18 eine externe Pumpe angeschlossen werden, welche gefiltertes Wasser in den Hohlraum 17 pumpt und somit einen gewissen Überdruck erzeugt und die Lager mit gefiltertem Wasser spült.For very large drives, an external pump may alternatively be connected to the bore 18, which pumps filtered water into the cavity 17 and thus generates a certain overpressure and rinses the bearings with filtered water.
  • Durch die Herstellung der Lager ausschließlich aus Carbid insbesondere Siliziumcarbid ist es möglich die Lagerung unabgedichtet als Wasserlager vorzusehen, wodurch eine aufwendige Abdichtung vermieden wird und gleichzeitig durch das Wasser eine ausgezeichnete Kühlung erreicht wird.By producing the bearings exclusively of carbide, in particular silicon carbide, it is possible to provide the bearing unsealed as a water store, whereby a complex sealing is avoided and at the same time excellent cooling is achieved by the water.
  • Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt. Aufgrund der hohen Hitzebeständigkeit kann das Carbidlager auch als Luftlager für einen Luftantrieb verwendet werden.The invention is not limited to the illustrated embodiment. Due to the high heat resistance, the carbide bearing can also be used as an air bearing for an air drive.
  • Für die Herstellung ist es entscheidend, daß sowohl der Rotor als auch das Gehäuse einschließlich Lagerung vormontiert und geschliffen werden können.For the manufacture, it is crucial that both the rotor and the housing can be preassembled and ground, including storage.
  • Lediglich zur Montage muß das Gehäuse nochmals gelöst und nach dem Einsetzen des Rotors wieder verschraubt werden.Only for installation, the housing must be loosened again and screwed again after the onset of the rotor.
  • BezugszeichenlisteLIST OF REFERENCE NUMBERS
  • 11
    Rotorrotor
    1a, 1b1a, 1b
    Rotorteilerotor parts
    22
    Schaufelshovel
    33
    Gehäusecasing
    3a, 3b3a, 3b
    Gehäuseteilehousing parts
    44
    Halterung, HydraulikzylinderBracket, hydraulic cylinder
    55
    Flanschflange
    66
    Verschraubungscrew
    77
    Abdeckungcover
    88th
    Leitungmanagement
    99
    ElektromotorläuferringElectric motor rotor ring
    10a, 10b10a, 10b
    Halteflanschretaining flange
    1111
    Statorringstator
    12a, 12b12a, 12b
    Gleitlagerbearings
    1313
    Luftspaltair gap
    1414
    Rotorlagerrotor bearing
    1515
    Gehäuselagerbearing Units
    1616
    Trapezförmige AusnehmungTrapezoidal recess
    SS
    Spaltecolumn
    1717
    Hohlraumcavity
    1818
    Bohrungdrilling
    1919
    Bootsrumpfhull
    2020
    Öffnungopening
    2121
    Schachtshaft
    2222
    Hülseshell
    2323
    Nutgroove
    2424
    Bolzenbolt
    2525
    EinlaßInlet
    2626
    Auslaßoutlet
    2727
    Dichtplattesealing plate
    2828
    Dichtwulstsealing bead
    2929
    LamellenroloLamellenrolo
    3030
    Antriebdrive

Claims (11)

  1. Jet propulsion engine, especially for watercraft, with a rotor (1) on the inside of which blades (2) are arranged and a housing (3) in which the rotor (1) is rotatably mounted, characterised in that the bearing between the rotor (1) and housing (3) comprises sea-watertight carbide.
  2. Jet propulsion engine according to claim 1, characterised in that the bearing between the rotor (1) and housing (3) comprises silicon carbide or aluminium carbide.
  3. Jet propulsion engine according to claim 1 or 2, characterised in that the bearing between the rotor (1) and housing (3) is made solely of carbide.
  4. Jet propulsion engine according to one of claims 1 to 3, characterised in that the bearing is formed by a sliding bearing.
  5. Jet propulsion engine according to one of claims 1 to 4, characterised in that the bearing in the rotor (1) and/or the bearing in the housing (3) is made up of several segments.
  6. Jet propulsion engine according to claim 5, characterised in that the bearing segments are spaced apart on the rotor or designed such that a pump effect is produced by the centrifugal force.
  7. Jet propulsion engine according to claim 6, characterised in that on one side the bearing segments on the rotor (1) and on the opposite side the bearing segments on the housing (3) are spaced apart, so that by means of the pump effect obtained by the spaced apart bearing segments on the rotor (1) a defined through flow is produced.
  8. Jet propulsion engine according to one of claims 6 or 7, characterised in that the bearing segments are secured in a form-closed manner onto the housing (3) or rotor (1) and are subsequently adhered.
  9. Jet propulsion engine according to one of claims 1 to 8, characterised in that the housing surrounds the rotor like a tube, producing a hollow cavity (17) between the outside rotor (1) and inside housing (3) and an electric ring motor is arranged in said hollow cavity.
  10. Jet propulsion engine according to one of claims 1 to 9, characterised in that the bearing between the rotor (1) and housing (3) has a diameter of more than 200 mm, preferably in the region of 200 mm to 2,500 mm.
  11. Method for producing a bearing on a jet propulsion engine, especially for watercraft, with a rotor (1) and a housing (3), characterised by the following steps:
    a form-closed securing of bearing segments made of carbide on the rotor,
    b adhesion of the bearing segments to the rotor,
    c grinding of at least two essentially perpendicular bearing surfaces on the bearing segments on the rotor,
    d form-closed securing of bearing segments made of carbide on the housing,
    e adhesion of the bearing segments on the housing and
    f grinding at least two essentially perpendicular bearing surfaces on the bearing segments on the housing.
EP04802733A 2003-11-14 2004-11-15 Jet propulsion engine Expired - Fee Related EP1687201B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10353566A DE10353566A1 (en) 2003-11-14 2003-11-14 jet propulsion
PCT/DE2004/002519 WO2005049420A1 (en) 2003-11-14 2004-11-15 Jet propulsion engine

Publications (2)

Publication Number Publication Date
EP1687201A1 EP1687201A1 (en) 2006-08-09
EP1687201B1 true EP1687201B1 (en) 2007-04-11

Family

ID=34609033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04802733A Expired - Fee Related EP1687201B1 (en) 2003-11-14 2004-11-15 Jet propulsion engine

Country Status (7)

Country Link
US (1) US20070253821A1 (en)
EP (1) EP1687201B1 (en)
KR (1) KR20060123154A (en)
AT (1) AT359209T (en)
DE (2) DE10353566A1 (en)
DK (1) DK1687201T3 (en)
WO (1) WO2005049420A1 (en)

Cited By (2)

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WO2009141254A2 (en) 2008-05-21 2009-11-26 Siemens Aktiengesellschaft Azimuth propeller drive unit having a low mounting height for a floating device
WO2009153124A2 (en) 2008-05-27 2009-12-23 Siemens Aktiengesellschaft Turbine motor with at least two rotors

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WO2009141254A2 (en) 2008-05-21 2009-11-26 Siemens Aktiengesellschaft Azimuth propeller drive unit having a low mounting height for a floating device
DE102008024540A1 (en) 2008-05-21 2009-12-03 Siemens Aktiengesellschaft Low installation height azimuth propeller drive for a floating device
WO2009153124A2 (en) 2008-05-27 2009-12-23 Siemens Aktiengesellschaft Turbine motor with at least two rotors

Also Published As

Publication number Publication date
KR20060123154A (en) 2006-12-01
AT359209T (en) 2007-05-15
DE502004003499D1 (en) 2007-05-24
DK1687201T3 (en) 2007-08-27
WO2005049420A1 (en) 2005-06-02
US20070253821A1 (en) 2007-11-01
DE10353566A1 (en) 2005-06-23
EP1687201A1 (en) 2006-08-09

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