EP1107906B1 - Vorrichtung zum antrieb eines bootes - Google Patents
Vorrichtung zum antrieb eines bootes Download PDFInfo
- Publication number
- EP1107906B1 EP1107906B1 EP99953660A EP99953660A EP1107906B1 EP 1107906 B1 EP1107906 B1 EP 1107906B1 EP 99953660 A EP99953660 A EP 99953660A EP 99953660 A EP99953660 A EP 99953660A EP 1107906 B1 EP1107906 B1 EP 1107906B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propeller
- end segment
- course
- regions
- parabolic
- 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
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/32—Housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/32—Housings
- B63H2020/323—Gear cases
Definitions
- the invention relates to a device for driving a Bootes that have a propeller as well as a gearbox has, and in which the gear housing with a rounded tapered end segment is provided.
- the gearbox housing runs between the open end, the propeller side, and the tapered part, the gear nose, cylindrical.
- the designs tend to vary depending on the make corresponding to the gear lugs between a course a parabola, a hemisphere, a design of the letter delta or a circular arc with common Intersection, the Crescent design.
- Such gear lugs are used in the drives mentioned above the incoming water more or less strongly sprinkles because more water is displaced than the gearbox offers on performance space.
- the gear lugs compel the inflowing through their geometry Water an excessive change of direction on this leads to a bad drag coefficient.
- the result is an increased water resistance and at higher The problem of so-called speeds occurs Breakaway on. That means the propeller spins, because it is no longer sufficient on the vacuum side incoming water is supplied or increased turbulence is exposed.
- the propeller draws air from the Water surface, which is also due to an anti-ventilation plate cannot be prevented above the propeller. It even happens that the engine overheats because of the Cooling water openings no longer flushed with enough water can be. As a result, the drive must be mounted lower be than necessary, which in turn leads to increased overall resistance leads.
- the object of the present invention is a device to construct of the type mentioned in the introduction, that achieves improved efficiency becomes.
- a compact and short design is supported that the end segment from a gear cap and an attachment element is formed.
- attachment element is based on the gear cap steeper than the gear cap in front of you Transition extends into the attachment element.
- a low flow resistance can be achieved be that the end segment at least partially in Form of a finished parabola is limited.
- the end segment at least partially in The shape of a continuous ellipse is limited.
- end segment is a multi-stage Course of its surface contour with angular Transitions of the individual surface segments has relative to each other.
- a structurally simple and fluid dynamically effective Measure is achieved in that the elliptical or parabolic contoured leading edge in the vertical direction above the gearbox extends.
- leading edge contoured elliptically or parabolically in a vertical direction below the gear housing extends.
- propeller be in the area Provide leading edges of propeller blades is that in the range from a vertex line to a vacuum side are designed free of quarter arches.
- the propeller blades of the propeller at least in some areas have a contour that is made from stepped interleaved elliptically contoured Segments is formed.
- Fig. 1 shows an embodiment in which a gear housing (1) from a basic segment (2) and one tapering end segment (3) is formed.
- the end segment (3) tapers from the base segment (2) essentially parabolic.
- Fig. 2 shows an embodiment in which the end segment (3) from one opening into the basic segment (2) Gear cap (4) and one of the gear cap (4) worn attachment element (5) is formed.
- a Base area (6) of the attachment element (5) can be a have a circular contour. Starting from this Base area (6) extends the attachment element (5) with a contour corresponding to a parabolic segment. In the area of it facing away from the base area (6) The extension element (5) can taper to expansion.
- FIG. 2 begins the course of the outer contour of the attachment element (5) at a right angle relative to the base (6). In principle, however, there are also other angular arrangements realizable.
- a transition of the attachment element (5) to the gear cap (4) is preferably discontinuous in the area of an angle approach (7).
- the basic segment (2) typically extends substantially cylindrical and coaxial to a center line (8th).
- the gear housing (1) is preferably used in the area of outboard motors or sterndrives for boats. With a correspondingly large dimensioning is also a use in context possible with ship propulsion.
- the end segment (3) or the attachment element (5) it is also possible to match a contour course accordingly a continuous ellipse. at a parabolic course is particularly to one Contour design in the form of a finished parabola appropriate.
- the embodiment shown in FIG. 2 begins the attachment element (6) preferably in that area the gear cap (4), in which a course of the outer contour the gear cap (4) clearly from the course deviate from a parabola or a continuous ellipse starts.
- This geometric design can an essentially parallel to the center line (8) Inflow onto the attachment element (5) subsequent course of the gear cap (4).
- the incoming water is experienced by this construction no excessive change of direction due to blasting.
- the entire gear housing (1) is rather flows very tightly and turbulence is avoided.
- One facing away from the gear cap (4) End of the base segment (5) subsequent, not shown As a result, the propeller is better blown and it is almost impossible to break loose. Reduced at the same time the water resistance on the tread the gear housing (1).
- FIG. 3 shows a typical design in a side view an underwater part (9) of a drive.
- the Underwater part (9) consists of a mounting plate (10) to which there is a spacer plate (11) for fixation of the gear housing (1) connects.
- a sword-like flow guide (12) arranged in the field of Spacer plate (11) facing away from the gearbox housing (1).
- a drive shaft (13) for the propeller is brought out.
- a flow arrow in FIG. 3 is a typical one Inflow of the underwater part (9) characterized.
- a leading edge (14) of the underwater part (9) is also preferably with a parabolic or elliptical contour. Such a design is both in the area of the spacer plate (11) also realized in the area of the flow guide element (12).
- Fig. 4 shows a typical in a horizontal section Contour course for the underwater part (9).
- the leading edge (14) is both the proposed parabolic Course as well to facilitate a Comparison with the prior art on the outside conventional contour curve shown.
- Fig. 5 shows a propeller (16) with propeller blades (17).
- the propeller blades (17) range from Leading edges (18) a design such that no more water due to the rotating movement of the propellers (16) can be displaced into the negative pressure area.
- a corresponding design of the leading edge (18) can be done by removing the quarter arch from the apex line the leading edges (18) to the vacuum side there.
- propellers (16) of larger dimensions for example for displacement or commercial shipping is in relation to the diameter a slight incline. It is therefore advisable such propellers (16) in the area of the leading edges (18) with a stronger profile. As a result, those displacing into the negative pressure area Sides of the leading edges (18) are omitted.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Toys (AREA)
- Exhaust Silencers (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Magnetic Heads (AREA)
- Discharge Heating (AREA)
- General Details Of Gearings (AREA)
- Vehicle Body Suspensions (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
- Fig. 1:
- Eine Prinzipdarstellung eines Getriebegehäuses mit parabelförmig verlaufender Getriebekappe,
- Fig. 2:
- eine Prinzipdarstellung eines Getriebegehäuses mit einer Getriebekappe, die stufenförmig in ein Aufsatzelement übergeleitet ist, das einen Außenkonturverlauf entsprechend eines Parabelsegmentes aufweist,
- Fig. 3:
- eine Anordnung eines Getriebegehäuses, das im Bereich eines Unterwasserteils angeordnet ist,
- Fig. 4:
- eine Darstellung des Unterwasserteils mit elliptisch gestalteter Anströmkante und stumpfer Abströmkante,
- Fig. 5:
- eine Prinzipdarstellung von Propellerflügeln mit bereichsweise elliptisch gestalteten Eintrittskanten,
- Fig. 6:
- eine Detaildarstellung der Eintrittskanten des
Propellers gemäß Fig. 5
und - Fig. 7:
- eine teilweise Darstellung eines Propellers, bei dem im Bereich der Eintrittskanten ein mehrstufiger ellipsenförmiger Profilverlauf vorgesehen ist.
Claims (11)
- Vorrichtung zum Antrieb eines Bootes, die einen Propeller (16) sowie ein Getriebegehäuse (1) aufweist, und bei der ein Grundsegment (2) des Getriebegehäuses (1) mit einem sich gerundet verjüngenden Endsegment (3) versehen ist, das mindestens bereichsweise einen Verlauf einer Außenkontur entsprechend dem Verlauf einer Parabel oder einer Ellipse aufweist, dadurch gekennzeichnet, daß das Endsegment (3) einen mehrstufigen Verlauf seiner Oberflächenkontur mit winkelförmigen Übergängen der einzelnen Oberflächensegmente relativ zueinander aufweist und daß ausgehend von dem als Getriebekappe (4) ausgebildeten und dem Grundsegment (2) zugewandt angeordneten Teil des Endsegmentes (3) ein Beginn eines Verlaufes einer Außenkontur eines Aufsatzelementes (5) im wesentlichen in einem rechten Winkel relativ zur einer Grundfläche (6) des Aufsatzelementes (5) orientiert ist.
- Vorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß sich das Aufsatzelement (5) ausgehend von der Getriebekappe (4) steiler als die Getriebekappe (4) vor einem Übergang in das Aufsatzelement (5) erstreckt.
- Vorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß die Außenkontur des Aufsatzelementes (5) von spitz zulaufenden Parabelsegmenten begrenzt ist.
- Vorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß das Endsegment (3) mindestens bereichsweise in Form einer zu Ende geführten Parabel begrenzt ist.
- Vorrichtung nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß das Endsegment (3) mindestens bereichsweise in Form einer durchgehenden Ellipse begrenzt ist.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Getriebegehäuse (1) im Bereich eines Unterwassersteiles (9) angeordnet ist, das mindestens bereichsweise eine parabelförmige oder elliptisch konturierte Anströmkante (14) aufweist.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß sich die elliptisch oder parabelförmig konturierte Eintrittskante (15) in lotrechter Richtung oberhalb des Getriebegehäuses (1) erstreckt.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß sich die elliptisch oder parabelförmig konturierte Eintrittskante (15) in lotrechter Richtung unterhalb des Getriebegehäuses (1) erstreckt.
- Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Propeller (16) im Bereich von Propellerblättern (17) mit Eintrittskanten (18) versehen ist, die im Bereich von einer Scheitellinie bis zu einer Unterdruckseite viertelbogenfrei gestaltet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Propellerblätter (17) im Bereich der verbleibenden Viertelbögen der Eintrittskanten (18) mit einer elliptischen oder parabelförmigen Kontur versehen sind.
- Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Propellerblätter (17) des Propellers (16) mindestens bereichsweise Eintrittskanten (18) mit einer Kontur aufweisen, die aus stufenformig ineinander übergeleiteten elliptisch konturierten Segmenten ausgebildet ist.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19840340 | 1998-09-04 | ||
DE19840339 | 1998-09-04 | ||
DE19840340A DE19840340A1 (de) | 1998-09-04 | 1998-09-04 | Erhöhung des Wirkungsgrades von propellergetriebenen Bootsantrieben, speziell im Unterwasserbereich bei Aussenbord- bzw. Z-Antrieben durch Veränderungen im Anström- und Abströmbereich |
DE1998140339 DE19840339A1 (de) | 1998-09-04 | 1998-09-04 | Erhöhung des Wirkungsgrades von Propellerbetrieben Bootsantrieben, vorwiegend bei Aussenbord- bzw. Z-Antrieben durch Veränderungen am Propeller |
PCT/DE1999/002747 WO2000013966A1 (de) | 1998-09-04 | 1999-08-27 | Vorrichtung zum antrieb eines bootes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1107906A1 EP1107906A1 (de) | 2001-06-20 |
EP1107906B1 true EP1107906B1 (de) | 2003-08-27 |
Family
ID=26048619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99953660A Expired - Lifetime EP1107906B1 (de) | 1998-09-04 | 1999-08-27 | Vorrichtung zum antrieb eines bootes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1107906B1 (de) |
AT (1) | ATE248100T1 (de) |
AU (1) | AU1030000A (de) |
DE (1) | DE59906792D1 (de) |
WO (1) | WO2000013966A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2737920A (en) * | 1953-05-11 | 1956-03-13 | Watson Flagg Machine Company | Drive for depth regulated propeller mounting |
US3654889A (en) * | 1970-09-28 | 1972-04-11 | Volvo Penta Ab | Hydraulic system for a boat drive |
US4068979A (en) * | 1973-07-26 | 1978-01-17 | Nikolai Sergeevich Vysokorodov | Marine propulsive device |
US3972646A (en) * | 1974-04-12 | 1976-08-03 | Bolt Beranek And Newman, Inc. | Propeller blade structures and methods particularly adapted for marine ducted reversible thrusters and the like for minimizing cavitation and related noise |
US4343612A (en) * | 1980-06-11 | 1982-08-10 | Outboard Marine Corporation | Outboard motor including a two speed transmission |
DE3835213A1 (de) * | 1988-10-15 | 1990-05-10 | Schiffer Dietrich F W | Tragfluegelausbildung zur energieuebertragung in den medien wasser und gas und fuer ein fahrzeug zur bewegung auf dem lande bzw. dem wasser und in der luft |
US4931026A (en) * | 1989-04-24 | 1990-06-05 | Woodland Sylvester L | Jet propeller |
AU1634992A (en) * | 1991-08-01 | 1993-02-04 | B.F. Goodrich Company, The | Composite and fairwater structures for marine vessels |
US5376027A (en) * | 1994-03-21 | 1994-12-27 | Hergenrather; Joseph J. | Marine propulsion mechanism for water craft |
GB9416481D0 (en) * | 1994-08-16 | 1994-10-12 | Wills Anthony A | Three dimensional objects |
-
1999
- 1999-08-27 EP EP99953660A patent/EP1107906B1/de not_active Expired - Lifetime
- 1999-08-27 AU AU10300/00A patent/AU1030000A/en not_active Abandoned
- 1999-08-27 AT AT99953660T patent/ATE248100T1/de not_active IP Right Cessation
- 1999-08-27 WO PCT/DE1999/002747 patent/WO2000013966A1/de active IP Right Grant
- 1999-08-27 DE DE59906792T patent/DE59906792D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1107906A1 (de) | 2001-06-20 |
DE59906792D1 (de) | 2003-10-02 |
ATE248100T1 (de) | 2003-09-15 |
AU1030000A (en) | 2000-03-27 |
WO2000013966A1 (de) | 2000-03-16 |
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