WO1995020520A1 - Wasserstrahlantrieb für wasserfahrzeuge mit steuerelementen zur richtungsänderung des vortrieb liefernden wasserstrahles - Google Patents
Wasserstrahlantrieb für wasserfahrzeuge mit steuerelementen zur richtungsänderung des vortrieb liefernden wasserstrahles Download PDFInfo
- Publication number
- WO1995020520A1 WO1995020520A1 PCT/DE1995/000099 DE9500099W WO9520520A1 WO 1995020520 A1 WO1995020520 A1 WO 1995020520A1 DE 9500099 W DE9500099 W DE 9500099W WO 9520520 A1 WO9520520 A1 WO 9520520A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- water jet
- pump
- rotor
- jet drive
- Prior art date
Links
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
- B63H11/113—Pivoted outlet
-
- 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
Definitions
- Water jet drive for water vehicles with controls for changing the direction of the propulsion water jet
- the invention relates to a water jet drive for watercraft with a pump and a stator and a nozzle for generating a propelling water jet and with control elements for changing the direction of the water jet.
- Water jet drives for water vehicles in which the water drawn in and accelerated by a pump and swirled by a stator exits as a directed jet through a nozzle influencing its direction, are widely known.
- US Pat. No. 4,992,065 shows a water jet drive with a nozzle connected downstream of the stator and pivotably mounted about a vertical axis, the outlet opening of which can be changed via flaps pivotable about a horizontal axis until the direction of the jet is reversed for the purpose of controlled backward travel.
- control nozzle In order to avoid flow losses, it is also known to construct the control nozzle from concentrically mounted spherical surfaces, which is also complex and requires complicated control and sealing elements; see. DE 26 44 743 AI.
- control elements at least one axially between one
- the pump is assigned a mirror-image and identically arranged nozzle upstream and downstream, and the two nozzles are each axially displaceably mounted independently of one another such that when one nozzle, eg. B. in the axial open position, the other nozzle in the direction of the minimum open position and vice versa.
- the rotor of the pump can be driven both clockwise and counterclockwise via a transfer gear designed as a cardan gear, the gear branches of which can be activated via a sliding clutch, the drive shaft of the transfer gear being the pivot axis lying approximately perpendicular to the axis of rotation of the rotor of the water jet drive.
- each of the axially displaceable nozzles forms a conical lateral surface, the pitch angle of which corresponds to the pitch of the facing free ends of the blades of the stator and the purpose of the pump housing in the region of the free ends of the blades of the respective stator to support the respective stator Formation of an annular channel located between the nozzle and the housing wall expanded radially outwards.
- the power transmission between the transfer case and the rotor takes place via ring gears arranged in each case in the stators; see. DE 42 41 724 AI.
- the design of the water jet drive according to the invention has a number of advantages.
- the water jet drive according to the invention acts as an active rudder, since it can be used for both forward and reverse travel depending on the direction of rotation of the pump rotor, the rotor blades being designed in such a way that they are most efficient for the forward travel of the Have watercraft, as described and shown for example in GB 1 145 237 for bow thruster.
- the amount of water supplied to the stator acting as a guide device is regulated on the inlet side by the downstream nozzle, while the nozzle on the pressure side, i.e. upstream, is displaced towards the rotor with increasing speed of the watercraft, and the effect of the ring channel working as an additional nozzle is thus more and more switched off until the nozzle on the pressure side only functions as a thrust nozzle during the cruise.
- the inlet acts as a thrust nozzle when reversing after the jet has been untwisted by means of the stator, the advantage of the water jet drive acting as an active rudder also being fully retained here.
- the design of the water jet drive according to the invention is equally suitable for all power units, with the symmetrical design of the axially displaceable nozzles and the associated stators making cost-effective production, simple assembly and maintenance possible
- the ring channel as an additional nozzle on the respective pressure side, the cross-section is released for a large amount of water when the watercraft starts up, while the flow through the ring channel becomes increasingly smaller due to the narrowing of the water access to the additional nozzle due to the displacement of the nozzle. until it only takes place through the nozzle during the cruise, which must be optimally designed for this operating area.
- the entire drive unit is pivotally mounted in the floor of the watercraft to be driven, the pivoting being made possible by means of a toothed belt or vertical shaft, a completely continuous control process is achieved when the rotor changes direction of rotation and at the same time the nozzles are moved from drive ahead to drive back.
- the amount of water to be supplied to the rotor is regulated by the displaceable inlet-side, ie downstream nozzle, assigned to the inlet-side stator - acting as a diffuser.
- the pressure-side nozzle By moving the pressure-side nozzle, on the other hand, the supply of pressurized water to the ring channel - as already mentioned - is controlled in such a way that optimal amounts of water are enforced both in the approach area and when traveling slowly, so
- nozzles and the associated stators design the nozzles each cleanly on the pressure side on the conically shaped stator blades and fix them concentrically in their maximum working position and thus keep them streamlined.
- the simple, symmetrical design of the drive unit ensures thrust of the same size, regardless of the direction of travel forward, backward and / or sideways.
- the water jet drive according to the invention can be used equally well in large ships, in mega yachts and in sailing boats, with the latter the drive unit being designed to be extendable from the boat hull so that it can be retracted when sailing.
- the part of the boat floor covering the drive which is known per se, is to be made retractable and extendable in order to obtain a smooth underwater ship for sailing.
- Another advantage of the design of the water jet drive according to the invention can be seen in the fact that semi-axial pumps can be used in fast gliding boats and sports yachts because of the variable speeds. It is also particularly important there that by axially adjusting the nozzle and thus the partial loading of the ring channel as an additional nozzle, the amounts of water or water speeds required for rapid acceleration at the start, for those coming from the water, at the transition to gliding and when the maximum speed is reached, the nozzle arrangement of the water jet drive according to the invention acts analogously to an adjusting nozzle, without any flap mechanism.
- the parts used for power transmission can be made compact and double-bearing in a simple manner and assembly is extremely simple since after the moving parts have been plugged in or retracted, which in turn run on bushes which are pressed into the stators, only the housing parts forming the housing are to be connected to one another, so that a simple and robust design of all parts, their rational manufacture and their easy interchangeability are ensured.
- FIG. 1 shows a section through a first embodiment of a water jet drive according to the invention in the “forward drive” working position
- Figure 2 is a partially sectioned front view of the water jet drive of Fig. 1 and
- a water jet drive generally designated by the reference number 10 in FIGS. 1 to 3, comprises in a housing 11 a pump 12 with a rotor 14 rotatably mounted in a hub 13, to which a stator 15 and 16 held by the housing is connected upstream and downstream, whose correspondingly curved stator blades 18 form the rigid connection between the housing 11 and the hub 13 - as shown in particular in FIG. 2.
- the water jet drive according to the embodiment according to FIGS. 1 and 2 each comprises a cone-shaped nozzle 20 and 21, which is mounted on the housing 11 from a minimal, axially displaceable to a maximum open position, for which purpose hydraulic cylinders 23 and 24, which are arranged in pairs between the housing and nozzle, are used; see. Fig. 2.
- the angle of inclination £ • of the conical outer surfaces of the nozzles 20 and 21 is chosen such that this corresponds to the angle of inclination ⁇ of the outer edges of the respectively exposed ends 27 and 28 of the stator blades 18 of the stator 15 and 16; see. Fig. 1.
- the nozzle 20 On the right half of FIG. 1, the nozzle 20 is shown in the minimal open position, in which the inner circumferential surface of the nozzle 20 rests approximately in half and is thereby fixed concentrically and held in a streamlined manner.
- the nozzle 21 - left half of FIG. 1 - is shown in its maximum open position, in which the stator is completely free of the nozzle; this position corresponds to the view according to FIG. 2.
- FIGS. 2 and 3 in particular show that an additional annular channel 25 and 26 is formed there, namely between the outer wall of the housing 11 and the outer lateral surface of the respective nozzle 20 or 21.
- this annular channel serves as an additional nozzle on the pressure side for accelerating the journey from a standing position and on the suction side as a variable inlet of the water jet drive.
- the drive of the rotor 14 serves, as shown in particular in FIG. 2, in the stators so-called ring gears 30 and 31, which can be driven alternately by means of intermediate gears 33 and 34 via a transfer gear 36 designed as a cardan drive.
- a sliding clutch 38 is used, which alternately switches the right and left branches of the transfer case to a vertical shaft drive 39, which is connected via a drive shaft 40 to a drive machine, not shown here, of the watercraft, also not shown, via the ring gear 30 or 31 the rotor 14 driven clockwise or counterclockwise depending on the switching position of the sliding clutch 38.
- the blades of the rotor 14 are designed such that they have the greatest efficiency for the forward movement of the watercraft.
- the water jet drive described above is mounted on the watercraft, not shown, in a manner known per se around the vertical shaft 39 forming a rotary bearing for the water jet drive, in each case by + - 90 ° in the direction of the double arrow 41.
- the further exemplary embodiment of the water jet drive 10 ′ shown in FIG. 3 likewise has a pump with a rotor 14 which is rotatably mounted on a hub 13.
- Two stators 15 and 16 held by the housing 11 are also connected upstream and downstream of the rotor, their
- the pitch angle cX of the conical surface of the nozzle is selected such that it corresponds to the pitch angle o of the outer edges of the exposed ends 27 of the stator blades of the stator, see FIG. 1.
- the inlet 53 is formed by the downstream housing part 52 of the housing 11. which is elliptical there.
- the rotor 14 is driven via ring gears 30 and 31 mounted in the stators, which can be driven alternately by means of intermediate gears and via a transfer gear 36 designed as a cardan gear, as already described in connection with FIG.
- a sliding clutch 38 is also provided there, which connects the right or left branch of the transfer case to a vertical shaft drive 39, which is in drive connection via a drive shaft 40 with a drive machine, not shown here, of the watercraft 50, which is only shown schematically.
- the entire water jet drive can be pivoted by + - 90 ° about the vertical shaft 39 forming a rotary bearing for the water jet drive.
- the axes 51 and 52 of the pump 12 and the downstream stator are not arranged coaxially, but are inclined to one another by an angle [i.
- the water line is indicated at 54 in FIG.
- Both nozzles can be adjusted independently of one another with the aid of the hydraulic cylinders 23 and 24 arranged in pairs in such a way that the amount of water entering and leaving the outlet side can be regulated in accordance with the desired driving conditions.
- Such control devices are known per se and, for the sake of simplicity and since they do not belong to the invention, are neither shown nor described here.
- the nozzles 20 and 21 can thus be displaced by means of the hydraulic cylinders in such a way that the pressure-side nozzle with the associated stator as the outlet nozzle and the suction-side nozzle with the associated stator, which now acts as a guide device, serve as an inlet for forward travel, while simultaneously reversing the Direction of rotation of the rotor reverses this effect, the amount of water supplied can be regulated by axially shifting the respective inlet-side nozzle.
- the reversal of forward to reverse travel is done by independently moving the described nozzles while changing the direction of rotation of the rotor of the pump, so that
- Thrust nozzle with additional ring channel-shaped additional nozzle - new thrust direction Thrust nozzle with additional ring channel-shaped additional nozzle - new thrust direction.
- the stators upstream or downstream of the rotor of the pump accordingly work accordingly as a guide or stator and vice versa, depending on the direction of thrust of the water jet drive, the amount of water supplied to the rotor with the required pre-twist adjustable by changing the axial position of the nozzle in question is.
- the ring channel which can be changed by moving the pressure-side nozzle, enables an adjustable cross-sectional change in accordance with the amount of water required for a desired driving speed.
- the nozzle 20 from the maximum to the minimum open position - z. B. also by means of hydraulic cylinders -, axially shifted, which corresponds to the driving state "full speed ahead".
- the ring channel 25 is closed, as shown in FIG. 3 above.
- the nozzle 20 with the ring channel 25 open is used for the inlet and the inlet 53 is used by means of the stator 15 as an outlet nozzle for the reverse travel, the functions of the stator and nozzle are therefore reversed, as above for the exemplary embodiment according to FIGS 2 described.
- nozzles 20 and 21 rigidly and to assign them to a thrust change slide, not shown here, which is mounted in the above-described ring channels 25 and 26 and consists of two mirror-image-arranged bushes which surround the nozzles from the outside which are rigidly connected to one another via rods and are each conical in accordance with the angles o and c described above
- ICHTI TES SHEET (RULES ISA / EP Have inner lateral surfaces which correspond to the conical outer lateral surfaces of the nozzles.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/525,685 US5649843A (en) | 1994-01-28 | 1995-01-24 | Waterjet propulsion unit for water craft with control elements for changing the direction of thrust of the waterjet |
DE59500892T DE59500892D1 (de) | 1994-01-28 | 1995-01-24 | Wasserstrahlantrieb für wasserfahrzeuge mit steuerelementen zur richtungsänderung des vortrieb liefernden wasserstrahles |
JP7519825A JPH11505485A (ja) | 1994-01-28 | 1995-01-24 | ウォータジェットの正逆方向変更用コントロール部材を備えた水上艇のウォータジェット推進装置 |
EP95906273A EP0690806B1 (de) | 1994-01-28 | 1995-01-24 | Wasserstrahlantrieb für wasserfahrzeuge mit steuerelementen zur richtungsänderung des vortrieb liefernden wasserstrahles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4402558A DE4402558A1 (de) | 1994-01-28 | 1994-01-28 | Wasserstrahlantrieb für Wasserfahrzeuge mit Steuerelementen zur Richtungsänderung des Vortrieb liefernden Wasserstrahles |
DEP4402558.0 | 1994-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995020520A1 true WO1995020520A1 (de) | 1995-08-03 |
Family
ID=6508916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/000099 WO1995020520A1 (de) | 1994-01-28 | 1995-01-24 | Wasserstrahlantrieb für wasserfahrzeuge mit steuerelementen zur richtungsänderung des vortrieb liefernden wasserstrahles |
Country Status (5)
Country | Link |
---|---|
US (1) | US5649843A (de) |
EP (1) | EP0690806B1 (de) |
JP (1) | JPH11505485A (de) |
DE (2) | DE4402558A1 (de) |
WO (1) | WO1995020520A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6331543B1 (en) * | 1996-11-01 | 2001-12-18 | Nitromed, Inc. | Nitrosated and nitrosylated phosphodiesterase inhibitors, compositions and methods of use |
US6171159B1 (en) | 1999-09-07 | 2001-01-09 | The United States Of America As Represented By The Secretary Of The Navy | Steering and backing systems for waterjet craft with underwater discharge |
US6953767B2 (en) * | 2001-03-01 | 2005-10-11 | Exxonmobil Chemical Patents Inc. | Silicoaluminophosphate molecular sieve |
US6812372B2 (en) | 2001-03-01 | 2004-11-02 | Exxonmobil Chemical Patents Inc. | Silicoaluminophosphate molecular sieve |
US20050096214A1 (en) * | 2001-03-01 | 2005-05-05 | Janssen Marcel J. | Silicoaluminophosphate molecular sieve |
JP3974361B2 (ja) * | 2001-09-18 | 2007-09-12 | 本田技研工業株式会社 | ジェット推進艇 |
GB2401830A (en) * | 2003-05-19 | 2004-11-24 | Gibbs Tech Ltd | A jet drive for an amphibious vehicle |
US6991499B2 (en) * | 2003-09-16 | 2006-01-31 | Honeywell International, Inc. | Waterjet propulsion apparatus |
US9459361B2 (en) * | 2011-12-22 | 2016-10-04 | Schlumberger Technology Corporation | Facilitating operation of a seismic source |
CN114688043A (zh) * | 2022-04-09 | 2022-07-01 | 朱振洪 | 一种具有预旋的测试装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE722842C (de) * | 1937-10-10 | 1942-07-23 | Hermann Heinrich | Duese fuer eine Schiffsschraube |
US3249083A (en) * | 1963-12-16 | 1966-05-03 | Outboard Marine Corp | Marine jet propulsion |
US3605672A (en) * | 1968-12-02 | 1971-09-20 | William P Strumbos | Directional control apparatus |
WO1984001759A1 (en) * | 1982-10-27 | 1984-05-10 | Skrinjar Designers Constructor | Hydro jet |
JPH02124395A (ja) * | 1988-10-31 | 1990-05-11 | Toshiba Corp | ウォータージェット推進器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3362371A (en) * | 1965-10-22 | 1968-01-09 | Tamco Ltd | Fluid pump for watercraft |
GB1190735A (en) * | 1966-05-07 | 1970-05-06 | Ua Engineering Ltd | Improvements in or relating to Steering Means for Vessels employing Hydraulic Jet Propulsion |
GB1149136A (en) * | 1966-10-20 | 1969-04-16 | H C F Porsche K G Ing | Improvements in or relating to screw drive for boats |
US3593686A (en) * | 1969-08-28 | 1971-07-20 | Euvon G Cooper | System for laterally maneuvering a watercraft hull |
DE2644743A1 (de) * | 1976-10-04 | 1978-04-06 | Schubert Siegfried | Abstroemkanal fuer den wasserstrahl- reaktionsantrieb eines wasserfahrzeuges |
JPS6160392A (ja) * | 1984-08-31 | 1986-03-28 | Mitsubishi Heavy Ind Ltd | サイドスラスタ− |
SE457166B (sv) * | 1987-05-21 | 1988-12-05 | Mjp Marine Jet Power Handelsbo | Reverseringsanordning foer ett straaldriftsaggregat foer fartyg |
DE3735409C2 (de) * | 1987-10-20 | 1996-11-28 | Schottel Werft | Wasserstrahlantrieb |
JPH01262290A (ja) * | 1988-04-13 | 1989-10-19 | Toshiba Corp | ウォータジェット推進機 |
-
1994
- 1994-01-28 DE DE4402558A patent/DE4402558A1/de not_active Withdrawn
-
1995
- 1995-01-24 WO PCT/DE1995/000099 patent/WO1995020520A1/de active IP Right Grant
- 1995-01-24 US US08/525,685 patent/US5649843A/en not_active Expired - Fee Related
- 1995-01-24 EP EP95906273A patent/EP0690806B1/de not_active Expired - Lifetime
- 1995-01-24 JP JP7519825A patent/JPH11505485A/ja active Pending
- 1995-01-24 DE DE59500892T patent/DE59500892D1/de not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE722842C (de) * | 1937-10-10 | 1942-07-23 | Hermann Heinrich | Duese fuer eine Schiffsschraube |
US3249083A (en) * | 1963-12-16 | 1966-05-03 | Outboard Marine Corp | Marine jet propulsion |
US3605672A (en) * | 1968-12-02 | 1971-09-20 | William P Strumbos | Directional control apparatus |
WO1984001759A1 (en) * | 1982-10-27 | 1984-05-10 | Skrinjar Designers Constructor | Hydro jet |
JPH02124395A (ja) * | 1988-10-31 | 1990-05-11 | Toshiba Corp | ウォータージェット推進器 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 014, no. 355 (M - 1004) 31 July 1990 (1990-07-31) * |
Also Published As
Publication number | Publication date |
---|---|
EP0690806A1 (de) | 1996-01-10 |
US5649843A (en) | 1997-07-22 |
JPH11505485A (ja) | 1999-05-21 |
DE59500892D1 (de) | 1997-12-04 |
DE4402558A1 (de) | 1995-08-03 |
EP0690806B1 (de) | 1997-10-29 |
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