WO1993018964A1 - Swivelling nozzle with steering flaps for a hydrojet boat - Google Patents

Swivelling nozzle with steering flaps for a hydrojet boat Download PDF

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Publication number
WO1993018964A1
WO1993018964A1 PCT/EP1993/000642 EP9300642W WO9318964A1 WO 1993018964 A1 WO1993018964 A1 WO 1993018964A1 EP 9300642 W EP9300642 W EP 9300642W WO 9318964 A1 WO9318964 A1 WO 9318964A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle body
nozzle
control flaps
net
vertical axis
Prior art date
Application number
PCT/EP1993/000642
Other languages
German (de)
French (fr)
Inventor
Manfred Schulze
Original Assignee
Jetmarine 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 Jetmarine Ag filed Critical Jetmarine Ag
Priority to EP93920568A priority Critical patent/EP0593756A1/en
Publication of WO1993018964A1 publication Critical patent/WO1993018964A1/en

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Classifications

    • 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
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/107—Direction control of propulsive fluid
    • B63H11/117—Pivoted vane
    • 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
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/107—Direction control of propulsive fluid
    • B63H11/113—Pivoted outlet

Definitions

  • the invention relates to a nozzle for a water jet boat drive according to the preamble of patent claim 1.
  • Such nozzles at the end of the outflow channel of a water jet reaction drive for watercraft are known in many forms; they have the task of letting the water sucked in and accelerated by a pump emerge from the outflow channel in a direction which can be determined by the operator of the watercraft.
  • this object is achieved in that two control flaps are pivotally mounted opposite one another about likewise vertical axes, one of which in each case lies flat against the inner wall in the zero position of the nozzle body inactive position when pivoting the nozzle body about the vertical axis can be pivoted into the effective position such that the water flowing through the nozzle body is additionally deflected in the pivoting direction of the nozzle body.
  • the axes of the control flaps are designed as pivot axes mounted in the nozzle body, each of which has a lever arm protruding from the plane of the control flaps at an end penetrating the nozzle body, said lever arm protruding into the pivoting range of a switch cam fixed to the frame.
  • the water jet deflected by the swivel angle oL of the nozzle body is additionally deflected by the control flap swiveling into the nozzle cross-section in the same direction, so that an overall deflection angle d plus ⁇ is obtained which is in the range of approximately 55 ° to 60 °.
  • control flaps Since the control flaps rest flat on the inner circumferential surface of the preferably rectangular nozzle body in the rest position, they cannot interfere with the water flow escaping through the nozzle body when driving ahead. Furthermore, since the pivot axes of the control flaps are upstream in relation to them, when the nozzle body is returned in relation to the fixed switching cams, they are moved by the water flow in their initial position, so that mechanical return means, such as springs, cams or the like, are omitted .
  • FIG. 1 The invention is described below using a "in the figure embodiment, more or less schematically illustrated: FIG.
  • FIG. 1 shows a perspective illustration of a swivel nozzle with control flaps according to the invention
  • FIG. 2 shows a functional diagram of the swivel nozzle with control flaps, change of direction on the left and
  • FIG. 3 shows a functional diagram of the swivel nozzle with control flaps, change of direction on the right.
  • a flow channel also not shown, arranged in the forward direction at the stern of a watercraft, not shown, has at its end a nozzle designated overall by reference number 10, which - as shown in FIG. 1 - has an approximately rectangular nozzle body 12 which is arranged around a nozzle vertical axis 13 is pivotally mounted.
  • the axis 13 is arranged between the trusses 15 and 16 which are fixed to the vehicle, that is to say the frame, while hydraulic cylinders 18, 19 which are fixed to the vehicle and which engage with their free ends on the nozzle body 12, the nozzle in the direction of the arrows 20 by a pivoting angle oL continuously can be pivoted; see.
  • a reversing flap 25 is pivotally mounted by means of pivoting levers 24 - only one pivoting lever of which is shown, which in its operative position partially shown in FIG. 1 shows that from the jet outlet opening of the nozzle 10 diverting water jet deflected against the direction of travel in order to thereby accelerate the watercraft, not shown, against the normal direction of travel - backward travel.
  • the reversing flap 25 completely clears the jet outlet opening of the nozzle 10; as described in connection with the nozzle body 12, it can also be moved continuously into its different setting positions by hydraulic cylinders (not shown here).
  • Control flaps 33 and 34 are also pivotably mounted in the nozzle body 12 via pivot axes 31 and 32 which are rotatably mounted in the further opposite side walls 27 and 28 and which are flat and are in their rest position on the inner lateral surfaces of the side walls 22 and 23 of the Jet body 12 fit snugly.
  • Lever arms 35 and 36 are rigidly attached to the ends of the pivot axes 31 and 32 which penetrate the nozzle body and which, as shown in particular in FIGS. 2 and 3, each form an angle P with the flat control flaps 33 and 34.
  • a switching cam 40 of the cross member 15 projects such that when the nozzle body 12 is pivoted clockwise or counterclockwise, the lever arm 36 or lever arm 35 and thus the associated pivot axis 32 or 31 in To be pivoted clockwise or counterclockwise.
  • the control flap 34 or the control flap 33 is also pivoted by the amount of the angle D in the pivoting direction of the nozzle body.
  • the water jet (not shown here) emerging from the jet outlet opening of the nozzle 10 pivoted by the angle ⁇ experiences a deflection in the jet outlet opening by the angle ⁇ in one direction or the other.
  • the reversing flap can of course be actuated, so that any curve travel can be forced on the watercraft even when reversing.
  • the angle S enclosed by the lever arms 35 and 36 and the control flaps 33 and 34 is to be dimensioned between 110 ° and 130 °.
  • the mutually adjacent end faces of switching cams and lever arms can be designed in such a way that the partial areas assigned to one another are rolled in a form-fitting manner.

Abstract

A swivelling nozzle for a hydrojet boat has integrated steering flaps (33, 34) arranged opposite each other and mounted so as to swivel around vertical axis bolts (31, 32). When the nozzle body (12) is swivelled around the vertical axis bolt (13), one of the steering flaps (33, 34) is swivelled by a control cam secured to the frame from a rest position in which the flap lies flat on the inner wall of the nozzle body (12) being in its initial position to an operational position in which the water that flows through the nozzle body (12) is further deflected in the swivelling direction of the nozzle body.

Description

Schwenkdüse mit Steuerklappen für einen Wasserstrahl-Bootsantrieb Swivel nozzle with control flaps for a water jet boat drive
Die Erfindung betrifft eine Düse für einen Wasser¬ strahl-Bootsantrieb gemäß dem Oberbegriff des Patentan¬ spruchs 1.The invention relates to a nozzle for a water jet boat drive according to the preamble of patent claim 1.
Solche Düsen am Ende des Abströmkanals eines Wasser- strahl-Reaktionsantriebes für Wasserfahrzeuge sind in vielfacher Ausgestaltung bekannt; sie haben die Aufga¬ be, das von einer Pumpe angesaugte und beschleunigte Wasser in von der Bedienungsperson des Wasserfahrzeuges bestimmbarer Richtung aus dem Abströmkanal austreten zu lassen.Such nozzles at the end of the outflow channel of a water jet reaction drive for watercraft are known in many forms; they have the task of letting the water sucked in and accelerated by a pump emerge from the outflow channel in a direction which can be determined by the operator of the watercraft.
Allen bekannten Ausführungsformen solcher Düsen ist ge¬ meinsam, daß infolge der bauaufwendigen Klappenkon¬ struktionen für Vorwärts-, Rechts-, Links- und Rück- wärtsfahrt des Wasserfahrzeuges der Ablenkwinkel für den aus der Düse austretenden Wasserstrahl für die Kur¬ venfahrt relativ gering ist, so daß damit ausgestattete Wasserfahrzeuge nur entlang großer Kurvenradien zu fah¬ ren sind.All known embodiments of such nozzles have in common that, owing to the complex flap constructions for forward, right, left and backward travel of the watercraft, the deflection angle for the water jet emerging from the nozzle is relatively small for cornering, so that water vehicles equipped with them can only be driven along large curve radii.
Dies ist beim An- und Ablegen sowie beim Manövrieren in kleinen Hafenbecken sehr nachteilig. Hinzu kommt, daß beim Anlegen und Manövrieren im Hafen ein Wasserfahr¬ zeug mit geringer Geschwindigkeit zu fahren ist, der Wasserstrahl-Reaktionsantrieb also mit großen Wasser¬ mengen bei geringem Druck arbeiten muß, für das enge iüirvenfahren also große Ablenkwinkel des austretenden Wasserstrahles erforderlich sind.This is very disadvantageous when docking and disembarking and when maneuvering in small harbor basins. In addition, when mooring and maneuvering in the harbor, a watercraft has to be driven at low speed, so the water jet reaction drive has to work with large amounts of water at low pressure, which means that large deflection angles of the escaping water jet are required for narrow movements.
Hier Abhilfe zu schaffen ist Aufgabe der Erfindung, durch die eine Düse auf- einfache und wohlfeile Art in betriebssicherer Weise derart ausgestaltet werden soll, daß ein größerer Ablenkwinkel des austretenden Wasser¬ strahles als bisher erzielbar ist.It is the object of the invention to remedy this situation, by means of which a nozzle is to be designed in a simple and inexpensive manner in an operationally reliable manner, that a larger deflection angle of the emerging water jet can be achieved than previously.
Ausgehend von der eingangs genannten, um eine senkrech- te Achse schwenkbaren Düse mit am Düsenkörper schwenk¬ bar gelagerten Steuerklappen, z.B. gemäß der DE 26 44 757-A1, ist diese Aufgabe dadurch gelöst, daß zwei Steuerklappen einander gegenüberliegend um eben¬ falls senkrechte Achsen schwenkbar gelagert sind, von denen jeweils eine aus ihrer in der Null-Lage des Dü¬ senkörpers flächig an der Innenwandung anliegenden un¬ wirksamen Stellung beim Schwenken des Düsenkörpers um die senkrechte Achse derart in die wirksame Lage schwenkbar ist, daß das den Düsenkörper durchströmende Wasser in die Schwenkrichtung des Düsenkörpers zusätz¬ lich abgelenkt wird.Proceeding from the above-mentioned nozzle, which can be pivoted about a vertical axis, with control flaps mounted pivotably on the nozzle body, e.g. According to DE 26 44 757-A1, this object is achieved in that two control flaps are pivotally mounted opposite one another about likewise vertical axes, one of which in each case lies flat against the inner wall in the zero position of the nozzle body inactive position when pivoting the nozzle body about the vertical axis can be pivoted into the effective position such that the water flowing through the nozzle body is additionally deflected in the pivoting direction of the nozzle body.
Nach einem weiteren Merkmal der Erfindung sind die Ach¬ sen der Steuerklappen als im Düsenkörper gelagerte Schwenkachsen ausgebildet, die an einem den Düsenkörper durchstoßenden Ende jeweils einen aus der Ebene der Steuerklappen ragenden Hebelarm aufweisen, welche in den Schwenkbereich einer rahmenfesten Schaltnocke ra¬ gen.According to a further feature of the invention, the axes of the control flaps are designed as pivot axes mounted in the nozzle body, each of which has a lever arm protruding from the plane of the control flaps at an end penetrating the nozzle body, said lever arm protruding into the pivoting range of a switch cam fixed to the frame.
Durch die erfindungsgemäße Ausbildung wird der um den Schwenkwinkel oL des Düsenkörpers abgelenkte Wasser¬ strahl durch die in den Düsenquerschnitt in gleichem Richtungssinne einschwenkende Steuerklappe zusätzlich um den Schwenkwinkel 0 der Steuerklappe abgelenkt, so daß ein Gesamtablenkwinkel d plus ß erhalten wird, der im Bereiche von etwa 55° bis 60° liegt.Due to the design according to the invention, the water jet deflected by the swivel angle oL of the nozzle body is additionally deflected by the control flap swiveling into the nozzle cross-section in the same direction, so that an overall deflection angle d plus β is obtained which is in the range of approximately 55 ° to 60 °.
Durch das Einschwenken der jeweiligen Steuerklappe wird gleichzeitig der Querschnitt der Strahlaustrittsöffnung der Düse verringert, was zu einer höheren Strahlge¬ schwindigkeit des austretenden Wasserstrahles führt. Auf diese Weise wird die aus der niedrigen Motordreh¬ zahl beim Manövrieren im Hafenbecken resultierende niedrige Austrittsgeschwindigkeit der von der Pumpe ge¬ förderten Wassermenge erhöht und damit der an sich vor- handene geringe Steuereffekt durch die sich erhöhende Strahlgeschwindigkeit verbessert.By swiveling in the respective control flap, the cross section of the jet outlet opening of the nozzle is simultaneously reduced, which leads to a higher jet speed of the emerging water jet. In this way, the low outlet speed of the amount of water conveyed by the pump resulting from the low engine speed during maneuvering in the harbor basin is increased, and thus the low control effect per se is improved by the increasing jet speed.
Auf diese Weise wird auch bei niedrigen Fahrgeschwin¬ digkeiten eine gute Manövrierfähigkeit des Wasserfahr- zeuges auf verblüffend einfache Weise erreicht.In this way, good maneuverability of the watercraft is achieved in an astonishingly simple manner, even at low speeds.
Da die Steuerklappen in der Ruhelage flächig an der In¬ nenmantelfläche des vorzugsweise rechteckförmigen Dü¬ senkörpers anliegen, können diese den durch den Düsen- körper austretenden Wasserstrom bei Vorausfahrt nicht stören. Da ferner die Schwenkachsen der Steuerklappen in bezug auf diese stromauf liegen, werden diese beim Rückführen des Düsenkörpers in bezug auf den festste¬ henden Schaltnocken durch den Wasserstrom in deren Aus- gangslage bewegt, so daß mechanische Rückführmittel, wie Federn, Kulissen oder ähnliches, entfallen.Since the control flaps rest flat on the inner circumferential surface of the preferably rectangular nozzle body in the rest position, they cannot interfere with the water flow escaping through the nozzle body when driving ahead. Furthermore, since the pivot axes of the control flaps are upstream in relation to them, when the nozzle body is returned in relation to the fixed switching cams, they are moved by the water flow in their initial position, so that mechanical return means, such as springs, cams or the like, are omitted .
Weitere Merkmale der Erfindung ergeben sich aus den Un¬ teransprüchen.Further features of the invention result from the subclaims.
Die Erfindung ist nachfolgend anhand eines " in der Zeichnung mehr oder minder schematisch dargestellten Ausführungsbeispieles beschrieben. Es zeigenThe invention is described below using a "in the figure embodiment, more or less schematically illustrated: FIG.
Figur 1 eine perspektivische Darstellung einer Schwenk¬ düse mit Steuerklappen gemäß der Erfindung,FIG. 1 shows a perspective illustration of a swivel nozzle with control flaps according to the invention,
Figur 2 ein Funktionsbild der Schwenkdüse mit Steuer¬ klappen, Fahrtrichtungswechsel links undFIG. 2 shows a functional diagram of the swivel nozzle with control flaps, change of direction on the left and
Figur 3 ein Funktionsbild der Schwenkdüse mit Steuer¬ klappen, Fahrtrichtungswechsel rechts. Ein in Vorausrichtung am Heck eines nicht dargestellten Wasserfahrzeuges angeordneter, ebenfalls nicht darge¬ stellter Strömungskanal weist an seinem Ende eine ins- gesamt mit der Bezugsziffer 10 bezeichnete Düse auf, die - wie Figur 1 zeigt - einen etwa rechteckförmigen Düsenkörper 12 aufweist, der um eine senkrechte Achse 13 schwenkbar gelagert ist. Die Achse 13 ist zwischen fahrzeugfesten, also rahmenfesten Traversen 15 und 16 angeordnet, während über fahrzeugfeste Hydraulikzylin¬ der 18, 19, die mit ihren freien Enden an dem Düsenkör¬ per 12 angreifen, die Düse in Richtung der Pfeile 20 um einen Schwenkwinkel oL stetig verschwenkt werden kann; vgl. Figuren 2 und 3.3 shows a functional diagram of the swivel nozzle with control flaps, change of direction on the right. A flow channel, also not shown, arranged in the forward direction at the stern of a watercraft, not shown, has at its end a nozzle designated overall by reference number 10, which - as shown in FIG. 1 - has an approximately rectangular nozzle body 12 which is arranged around a nozzle vertical axis 13 is pivotally mounted. The axis 13 is arranged between the trusses 15 and 16 which are fixed to the vehicle, that is to say the frame, while hydraulic cylinders 18, 19 which are fixed to the vehicle and which engage with their free ends on the nozzle body 12, the nozzle in the direction of the arrows 20 by a pivoting angle oL continuously can be pivoted; see. Figures 2 and 3.
An den einander gegenüberliegenden senkrechten Seiten¬ wänden 22, 23 des Düsenkörpers 12 ist mittels Schwenk¬ hebel 24 - von denen nur ein Schwenkhebel dargestellt ist - eine Wendeklappe 25 schwenkbar gelagert, die in ihrer in Figur 1 teilweise gezeigten Wirklage den aus der Strahlaustrittsöffnung der Düse 10 austretenden Wasserstrahl entgegen der Fahrtrichtung umlenkt, um da¬ durch das nicht dargestellte Wasserfahrzeug entgegen der normalen Fahrtrichtung - Rückwärtsfahrt - zu be- schleunigen. Im Normalzustand gibt die Wendeklappe 25 die Strahlaustrittsöffnung der .Düse 10 vollständig frei; sie kann, wie im Zusammenhang mit dem Düsenkörper 12 beschrieben, ebenfalls durch hier nicht dargestellte Hydraulikzylinder in ihre unterschiedlichen Einstell- Lagen stetig bewegt werden.On the opposite vertical side walls 22, 23 of the nozzle body 12, a reversing flap 25 is pivotally mounted by means of pivoting levers 24 - only one pivoting lever of which is shown, which in its operative position partially shown in FIG. 1 shows that from the jet outlet opening of the nozzle 10 diverting water jet deflected against the direction of travel in order to thereby accelerate the watercraft, not shown, against the normal direction of travel - backward travel. In the normal state, the reversing flap 25 completely clears the jet outlet opening of the nozzle 10; as described in connection with the nozzle body 12, it can also be moved continuously into its different setting positions by hydraulic cylinders (not shown here).
Im dem Düsenkörper 12 sind ferner über in den weiteren einander gegenüberliegenden Seitenwänden 27 und 28 drehbeweglich gelagerten Schwenkachsen 31 und 32 Steu- erklappen 33 und 34 schwenkbar gelagert, die eben¬ flächig ausgebildet sind und in ihrer Ruhelage an den Innenmantelflächen der Seitenwände 22 und 23 des Düsen- körpers 12 satt anliegen. Auf den den Düsenkörper durchstoßenden Enden der Schwenkachsen 31 und 32 sind Hebelarme 35 und 36 starr befestigt, die, wie insbeson¬ dere die Figuren 2 und 3 zeigen, mit den ebenflächigen Steuerklappen 33 und 34 jeweils einen Winkel P ein¬ schließen.Control flaps 33 and 34 are also pivotably mounted in the nozzle body 12 via pivot axes 31 and 32 which are rotatably mounted in the further opposite side walls 27 and 28 and which are flat and are in their rest position on the inner lateral surfaces of the side walls 22 and 23 of the Jet body 12 fit snugly. Lever arms 35 and 36 are rigidly attached to the ends of the pivot axes 31 and 32 which penetrate the nozzle body and which, as shown in particular in FIGS. 2 and 3, each form an angle P with the flat control flaps 33 and 34.
In den Schwenkbereich der Hebelarme 35 und 36 ragt ein Schaltnocken 40 der Traverse 15, derart, daß beim Ver- schwenken des Düsenkörpers 12 im Uhrzeiger- oder im Ge¬ genuhrzeigersinne der Hebelarm 36 oder der Hebelarm 35 und damit die zugehörige Schwenkachse 32 oder 31 im Uhrzeiger- oder im Gegenuhrzeigersinne verschwenkt wer¬ den. Hierbei wird die Steuerklappe 34 oder die Steuer- klappe 33 ebenfalls um den Betrag des Winkels £ in Schwenkrichtung des Düsenkörpers verschwenkt. Auf diese Weise erfährt der hier nicht dargestellte, aus der Strahlaustrittsöffnung der um den Winkel^ verschwenk¬ ten Düse 10 austretende Wasserstrahl eine Ablenkung in der Strahlaustrittsöffnung um den Winkel ß in der einen oder anderen Richtung. Die Gesamtablenkung des austretenden Wasserstrahles in bezug auf die Symmetrielinie 50 in den Figuren 2 und 3 beträgt daher , plus ß , und zwingt dadurch das nicht dargestellte Wasserfahrzeug zu einer entsprechend wirksamen Kurven¬ fahrt. Wird der Düsenkörper 12 in seine in Figur 1 dar¬ gestellte Null-Lage zurückgeschwenkt, so gibt der Schaltnocken 40 den jeweils zugeordneten Hebelarm 35 bzw. 36 frei und das die Düse durchströmende Wasser drückt die jeweilige ebenflächige Steuerklappe 33 bzw. 34 in Anlage mit der Innenmantelfläche der zugeordneten Seitenwandung 22 bzw. 23, so daß dem Wasserfahrzeug ei¬ ne Geradeausfahrt aufgezwungen wird.In the pivoting range of the lever arms 35 and 36, a switching cam 40 of the cross member 15 projects such that when the nozzle body 12 is pivoted clockwise or counterclockwise, the lever arm 36 or lever arm 35 and thus the associated pivot axis 32 or 31 in To be pivoted clockwise or counterclockwise. Here, the control flap 34 or the control flap 33 is also pivoted by the amount of the angle D in the pivoting direction of the nozzle body. In this way, the water jet (not shown here) emerging from the jet outlet opening of the nozzle 10 pivoted by the angle ^ experiences a deflection in the jet outlet opening by the angle β in one direction or the other. The total deflection of the emerging water jet with respect to the line of symmetry 50 in FIGS. 2 and 3 is therefore plus β, and thereby forces the watercraft (not shown) to take a correspondingly effective curve. If the nozzle body 12 is pivoted back into its zero position shown in FIG. 1, the switching cam 40 releases the respectively associated lever arm 35 or 36 and the water flowing through the nozzle presses the respective flat control flap 33 or 34 into contact with the Inner lateral surface of the associated side wall 22 or 23, so that the watercraft is forced to drive straight ahead.
Unabhängig von der Stellung des Düsenkörpers 12 ist selbstverständlich die Wendeklappe betätigbar, so daß dem Wasserfahrzeug auch bei Rückwärtsfahrt jedwede Kur¬ venfahrt aufgezwungen werden kann.Regardless of the position of the nozzle body 12, the reversing flap can of course be actuated, so that any curve travel can be forced on the watercraft even when reversing.
Aufgrund praktischer Versuche hat sich ergeben, daß der von den Hebelarmen 35 und 36 und den Steuerklappen 33 und 34 eingeschlossene Winkel S zwischen 110° und 130° liegend zu bemessen ist.Based on practical tests, it has been found that the angle S enclosed by the lever arms 35 and 36 and the control flaps 33 and 34 is to be dimensioned between 110 ° and 130 °.
Selbstverständlich können die einander benachbarten Stirnflächen von Schaltnocken und Hebelarmen so gestal¬ tet sein, daß ein formschlüssiges Abwälzen der einander zugeordneten Teilflächen erfolgt. Of course, the mutually adjacent end faces of switching cams and lever arms can be designed in such a way that the partial areas assigned to one another are rolled in a form-fitting manner.

Claims

Patentansprüche Claims
1. Düse für einen Wasserstrahl-Bootsantrieb, bestehend aus einem um eine senkrechte Achse schwenkba¬ ren Düsenkörper und am Düsenkörper schwenkbar gelager¬ ten Steuerklappen, dadurch gekennzeichnet, daß zwei Steuerklappen (33, 34) einander gegenüberliegend um ebenfalls senkrechte Achsen (31, 32) schwenkbar gela¬ gert sind, von denen jeweils eine aus der in der Null- Lage des Düsenkörpers (12) flächig an der Innenwandung anliegenden unwirksamen Stellung beim Schwenken des Dü¬ senkörpers (12) um die senkrechte Achse (13) derart in eine wirksame Lage schwenkbar ist, daß das den Düsen¬ körper (12) durchströmende Wasser in Schwenkrichtung des Düsenkörpers zusätzlich abgelenkt wird.1. Nozzle for a water jet boat drive, consisting of a nozzle body which can be pivoted about a vertical axis and control flaps pivotably mounted on the nozzle body, characterized in that two control flaps (33, 34) are located opposite one another about likewise vertical axes (31, 32 ) are pivotably mounted, one of which in each case is in an effective position from the ineffective position lying flat against the inner wall in the zero position of the nozzle body (12) when the nozzle body (12) is pivoted about the vertical axis (13) It is pivotable in position that the water flowing through the nozzle body (12) is additionally deflected in the pivoting direction of the nozzle body.
2. Düse nach Anspruch 1, dadurch gekennzeich- net, daß die Achsen (31, 32) der Steuerklappen (33, 34) als im Düsenkörper (12) drehbeweglich gelagerte Schwenkachsen ausgebildet sind und jeweils an einem den Düsenkörper durchstoßenden Ende jeweils einen aus der Ebene der Steuerklappen ragenden Hebelarm (35, 36) auf- weisen, die in den Schwenkbereich einer rahmenfesten (Traverse 15) Schaltnocke (40) ragen.2. Nozzle according to claim 1, characterized in that the axes (31, 32) of the control flaps (33, 34) are designed as pivot axes mounted rotatably in the nozzle body (12) and each have an end penetrating the nozzle body Have lever arm (35, 36) projecting at the level of the control flaps, which protrude into the swivel range of a switch cam (40) fixed to the frame (cross-member 15).
3. Düse nach Anspruch 1, dadurch gekennzeich¬ net, daß die Schwenkachsen (31, 32) der Steuerklappen (33, 34) am stromauf liegenden Ende der Steuerklappen angeordnet sind.3. Nozzle according to claim 1, characterized gekennzeich¬ net that the pivot axes (31, 32) of the control flaps (33, 34) are arranged at the upstream end of the control flaps.
4. Düse nach Anspruch 1, dadurch gekennzeich¬ net, daß die wirksame Länge der Steuerklappen (33, 34) größer als die wirksame Länge der Hebelarme (35, 36) ausgebildet ist. 4. Nozzle according to claim 1, characterized gekennzeich¬ net that the effective length of the control flaps (33, 34) is greater than the effective length of the lever arms (35, 36).
5. Düse nach Anspruch 1, dadurch gekennzeich¬ net, daß die einander zugewandten Stirnflächen von Schaltnocke (40) und der Hebelarme (35, 36) formschlüs¬ sig aneinander abwälzend ausgebildet sind.5. Nozzle according to claim 1, characterized gekennzeich¬ net that the mutually facing end faces of the switching cam (40) and the lever arms (35, 36) are formed form-rolling against each other.
6. Düse nach Anspruch 1, dadurch gekennzeich¬ net, daß der jeweils von Hebelarm (35, 36) und Steuer¬ klappe (33, 34) eingeschlossene Winkel 8 zwischen 110° und 130° liegt.6. Nozzle according to claim 1, characterized gekennzeich¬ net that each of the lever arm (35, 36) and Steuer¬ flap (33, 34) included angle 8 is between 110 ° and 130 °.
7. Düse nach Anspruch 1, dadurch gekennzeich¬ net, daß der Düsenkörper (12) einen rechteckformigen Querschnitt aufweist und daß die Steuerklappen (33, 34) ebenflächig ausgebildet sind.7. Nozzle according to claim 1, characterized gekennzeich¬ net that the nozzle body (12) has a rectangular cross section and that the control flaps (33, 34) are flat.
8. Düse nach Anspruch 1, dadurch gekennzeich¬ net, daß der Austrittsquerschnitt des Düsenkörpers (10) mittels der einen oder der anderen Steuerklappe (33, 34) zwecks Erhöhung der Strahlgeschwindigkeit des aus- tretenden Wasserstrahls veränderbar ist. 8. Nozzle according to claim 1, characterized gekennzeich¬ net that the outlet cross section of the nozzle body (10) by means of one or the other control flap (33, 34) can be changed in order to increase the jet speed of the emerging water jet.
GEÄNDERTE ANSPRUCHECHANGED CLAIMS
[beim Internationalen Büro am 6. Juli 1993 (06.07.93) eingegangen, ursprünglichen Anspruch 1 geändert; alle weiteren[Received at the International Bureau on July 6, 1993 (July 6, 1993), original claim 1 amended; all further
Ansprüche unverändert (1 Seite)]Claims unchanged (1 page)]
1. Düse für einen Wasserstrahl-Bootsantrieb, be¬ stehend aus einem um eine senkrechte Achse schwenkbaren Düsenkörper und am Düsenkörper schwenkbar gelagerten Steuerklappen, dadurch gekennzeichnet, daß zwei in der Null-Lage des Düsenkörpers (12) flächig an dessen je¬ weils zugewandter Innenwandung anliegende Steuerklappen (33, 34) einander gegenüberliegend um innerhalb des Dü- senkörpers (12) liegende, ebenfalls senkrechte Achsen (31, 32) schwenkbar gelagert sind, von denen jeweils eine aus der in der Null-Lage des Düsenkörpers (12) flächig an der Innenwandung anliegenden unwirksamen Stellung beim Schwenken des Düsenkörpers (12) um die senkrechte Achse (13) mittels getrieblicher Wirkglieder (35, 36) mit einem rahmenfesten Widerlager (40) derart in eine wirksame Lage schwenkbar ist, daß das den Dü¬ senkörper (12) durchströmende Wasser in Schwenkrichtung des Düsenkörpers zusätzlich abgelenkt wird. 1. Nozzle for a water jet boat drive, consisting of a pivotable nozzle body about a vertical axis and pivotally mounted on the nozzle body control flaps, characterized in that two in the zero position of the nozzle body (12) flat on its respective facing inner wall adjacent control flaps (33, 34) are mounted opposite one another so as to be pivotable about likewise vertical axes (31, 32) lying within the nozzle body (12), one each of which is flat on the zero position of the nozzle body (12) the inactive position in contact with the inner wall when pivoting the nozzle body (12) about the vertical axis (13) by means of geared active elements (35, 36) with a frame-fixed abutment (40) can be pivoted into an effective position such that the nozzle body (12 ) water flowing through is additionally deflected in the swivel direction of the nozzle body.
IN ARTIKEL 19 GENANNTE ERKLÄRUNGDECLARATION REFERRED TO IN ARTICLE 19
Der Patentanspruch l ist nachClaim 1 is after
Art. 19 (I) PCTArt. 19 (I) PCT
gegenüber dem ursprünglichen Patentanspruch 1 klargestellt durch Angabe der räumlichen Zuordnung der Steuerklappen im Kennzeichen. clarified compared to the original claim 1 by specifying the spatial assignment of the control flaps in the license plate.
PCT/EP1993/000642 1992-03-23 1993-03-18 Swivelling nozzle with steering flaps for a hydrojet boat WO1993018964A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93920568A EP0593756A1 (en) 1992-03-23 1993-03-18 Swivelling nozzle with steering flaps for a hydrojet boat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4209393.7 1992-03-23
DE19924209393 DE4209393A1 (en) 1992-03-23 1992-03-23 Swivel nozzle with control flaps for a water jet boat drive

Publications (1)

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WO1993018964A1 true WO1993018964A1 (en) 1993-09-30

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Application Number Title Priority Date Filing Date
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EP (1) EP0593756A1 (en)
DE (1) DE4209393A1 (en)
WO (1) WO1993018964A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO301414B1 (en) * 1994-06-16 1997-10-27 Kvaerner Asa Radiation equipment for a watercraft
DE10135543A1 (en) * 2001-07-20 2003-02-06 Karl-Josef Becker Propulsion drive and control method for water vehicle has braking via reverse propulsion provided by lowering deflection cap for propulsion water jet upon initiation of crash-stop function
US6881110B1 (en) * 2003-03-03 2005-04-19 Siemens Aktiengesellschaft High-speed vessel powered by at least one water jet propulsion system without exhaust gas trail

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013984B (en) * 1955-08-22 1957-08-14 Ludwig Kort Dipl Ing Articulated rudder
US3114239A (en) * 1962-03-23 1963-12-17 Layne Central Co Boat propulsion means
GB1176465A (en) * 1966-03-25 1970-01-01 Hydroconic Ltd Improvements in or relating to Ships' Steering and Propulsion Equipment
US3824946A (en) * 1972-08-30 1974-07-23 D Macardy Water jet propulsion unit
DE8525302U1 (en) * 1985-09-05 1987-01-08 Jastram-Werke Gmbh & Co Kg, 2050 Hamburg, De
DE3842172A1 (en) * 1988-12-15 1990-06-21 Wolfgang Barkemeyer High-performance rudder nozzle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1013984B (en) * 1955-08-22 1957-08-14 Ludwig Kort Dipl Ing Articulated rudder
US3114239A (en) * 1962-03-23 1963-12-17 Layne Central Co Boat propulsion means
GB1176465A (en) * 1966-03-25 1970-01-01 Hydroconic Ltd Improvements in or relating to Ships' Steering and Propulsion Equipment
US3824946A (en) * 1972-08-30 1974-07-23 D Macardy Water jet propulsion unit
DE8525302U1 (en) * 1985-09-05 1987-01-08 Jastram-Werke Gmbh & Co Kg, 2050 Hamburg, De
DE3842172A1 (en) * 1988-12-15 1990-06-21 Wolfgang Barkemeyer High-performance rudder nozzle

Also Published As

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DE4209393A1 (en) 1993-09-30
EP0593756A1 (en) 1994-04-27

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