EP1827968A1 - Bateau de plaisance a propulsion par turbine - Google Patents
Bateau de plaisance a propulsion par turbineInfo
- Publication number
- EP1827968A1 EP1827968A1 EP05810762A EP05810762A EP1827968A1 EP 1827968 A1 EP1827968 A1 EP 1827968A1 EP 05810762 A EP05810762 A EP 05810762A EP 05810762 A EP05810762 A EP 05810762A EP 1827968 A1 EP1827968 A1 EP 1827968A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine
- boat
- floating structure
- waterline
- boat according
- 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.)
- Withdrawn
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
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- 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
-
- 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
- B63H11/11—Direction control of propulsive fluid with bucket or clamshell-type reversing means
Definitions
- Disclosed coastal boating, and even more specifically the recreational boating is practiced on the beaches, and no more than the day, usually by i vacationers who have acquired no special navigational training.
- the invention proposes to use a real turbine, in which the rotor is enclosed in a hydraulic conduit. terminated by an ejection nozzle. It is no longer a matter of stirring the water of the surrounding environment by a turbine whose blades are oriented to provide propulsion, but to suck the water through an inlet end of the duct to push it towards the opposite end. and expelling it through the outlet end constituting an ejection nozzle. Between the two ends, the rotor is configured, depending on its direction of rotation, to ensure an increase in the speed of the water which leads to a propulsion effect by reaction.
- Turbine propulsion has various advantages over conventional propeller propulsion, including improving safety because there is no longer a moving mechanical part that is exposed to the outside of the boat, and that of a protection of fragile fixtures that reduces the repair work for companies offering such boats for rent by the day.
- the present invention makes it possible to exploit such advantages while avoiding the disadvantages that have made the use of turbines back to date. It aims in particular to facilitate the handling of the boat, as well as to ensure optimum cooling of the • turbine (more precisely of the motor driving the turbine) in terms of energy consumption and comfort for users navigating in the water. craft. It proposes to combine the propulsion by turbine with characteristics related to the relative disposition of the different parts constituting the cooperating functional elements, by taking special interest in boats which have more purpose to float safely than to advance quickly on great distances, and which are pleasant to handle in a playful context.
- a turbine-propelled pleasure craft comprises a hydraulic turbine and a drive motor of said turbine, both of which are under protection of a floating structure on which the users take place, advantageously in a cockpit, or cockpit, entirely situated above the waterline of the laden boat and open to the open air.
- This floating structure is advantageously made of a lower shell and an upper shell joining on both sides of a waterline assumed horizontal. As it is uruel, the position of this waterline is determined according to the normal distribution of the loads in the structure, so that in operation, when the boat moves on the water, in principle in calm weather, the junction between the two hulls remains in all points above the water.
- a housing cavity of the turbine is formed in the underside of the boat by the wall of the lower hull, in a position such that it is located below the waterline. It is advantageously arranged in the longitudinal direction of the boat to operate in suction of the surrounding water at its front end and to push back by a nozzle at the rear of the boat. We consider here the boat in normal operating situation, when it is commanded to advance back and forth on the water, rear and front being generally determined in the same direction by a seat on which users sit down.
- the nozzle is swiveling in its horizontal plane, so around a vertical axis.
- Manual control devices of its orientation are installed on the upper shell available to users. It is preferably a control stick which transmits the control commands by cable to a linkage determining the orientation of the nozzle.
- the space inside the floating structure contains a turbine drive motor which is supported by said structure in a position where it is in operation above the line. of flotation.
- a major advantage of this arrangement is to promote in combination an air cooling system also located above the waterline, so in particular, in the preferred embodiments of the invention, inside. of the upper shell.
- the invention preferably provides for this purpose means for organizing a circulation of cooling air in the engine housing, comprising an air intake passage taken from the surrounding atmosphere, preferably just above the line. flotation, and an air outlet passage opening above the boat through the upper hull. The air thus circulates in the ascending direction, and is pushed upward away from the boat and its occupants.
- the drive motor of the turbine is advantageously mounted in the floating structure so that its shaft is oriented parallel to the rotor of the turbine, preferably in the same vertical plane, itself oriented. along the longitudinal axis of the boat.
- the transmission of the movements from one to the other takes place, in preferred embodiments implementing the invention, by a belt which is held taut between two wheels situated in the same vertical plane and respectively integral in rotation. one of the motor shaft, the other of the turbine rotor.
- a tensor system particularly suitable involves a spring bearing fixed support on the floating structure.
- the invention advantageously provides to protect the air inlet passage of possible water projections by a system of baffles. Above all, it plans to reject air into the atmosphere through a chimney formed vertically above the floating structure. As a chimney, this chimney role can advantageously be combined with that of a tail end spread out in a sun visor over the passenger compartment receiving passengers or users.
- it is entirely beneficial in the spirit of the invention to thus organize an upward circulation of the cooling air since under the usual conditions of use for which the boat of the invention is intended , the air is relatively cool on the surface of the sea, especially when the weather is nice, the difference in temperature between the air and the water being all the stronger.
- Such an exhaust air duct having passed through the engine space may advantageously be mounted integral with an opening trunk supplementing the floating structure to provide access to the interior of the protected space formed by the upper shell.
- an optimum configuration is obtained for the circuit of the cooling air of the engine assembly, with effective guidance of the upstream side and a space without loss of load slowing down the flow on the downstream side.
- a sufficient height of the chimney ensures that the hot gases expelled do not disturb the passengers.
- Figures 1, 2 and 3 are extracted from the same computer-aided design computer file.
- - Figure 1 represents the boat as a whole in view and in perspective with partial bursting of the hulls;
- FIG. 2 is a longitudinal sectional view of the rear part of the boat
- FIG. 3 shows in perspective, in enlarged and partial form, the boat from the rear.
- the boat chosen to best illustrate the implementation of the invention responds to an external form which is in itself known.
- the floating structure is made by assembling a lower shell 1 and an upper shell 2. Although in practice this is not necessarily the case, it can be considered here that the upper shell and the lower shell are closed one on the other by welding their outer walls substantially at a water line 3, assumed stable in horizontal plane.
- the lower shell supports the hidden elements, enclosed under the upper shell, as well as those that have a role to play in the water. It is therefore, in particular, the turbine 7 and its associated members, the motor 8 which drives it, a fuel tank 12 in the case of a heat engine, or batteries or accumulators in the case of an electric motor.
- the upper shell provides access to internal elements that must be located out of the water.
- it has the function of sparing the cockpit where people take place using the boat and support the organs of piloting available to them.
- a control stick 13 mounted on the right side of the upper shell, next to a simple seat 14 for one to three persons formed by the outer wall of the hull.
- upper 2 dug in the form of cockpit (usual term for an open cockpit).
- the hull of the boat is completed by an outgrowth of the whale's tail 4 which takes to the rear of the boat to rise vertically and return to the front forming in upper part an enlarged end part spreading horizontally. This is positioned to act as a sunshade for people who have taken place on the boat, in the normal position of use of the latter, where they are sitting in the cockpit.
- the tail 4 is connected to the hull of the boat by a boot 5, which is mounted by a horizontal hinge at the rear of the boat and which locks on the upper hull, at the edge of the cockpit, in a position where, by its shape in this place, it comes to connect to the seat 14 by constituting its file.
- This safe provides access to the elements contained in the hull for maintenance and repair operations.
- the shaft of the turbine itself and the shaft of its drive motor are not in line with each other, as it would come easier to 'mind. They are arranged parallel horizontally one above the other.
- the turbine 7 is in the lower position, below the waterline 3, while the motor 8 is on the contrary above the waterline.
- the transmission of the movement of rotation of the motor shaft to the rotor of the turbine is provided by a belt 21 which is held taut by a tensor spring system 22.
- the turbine 7 is housed in a cavity that forms for this purpose the wall of the lower shell, on the underside of the floating structure. This arrangement provides a protective space around the turbine, which avoids operating incidents due to foreign bodies being sucked by the turbine, while keeping the turbine properly immersed.
- the receiving cavity of the turbine 7 is advantageously closed by a fixed plate, integral with the structure (thus fixed on the lower shell of the particular embodiment considered here), which provides a complementary mechanical protection.
- This plate is pierced with appropriate windows to not disturb the flow of water provided by the rotor of the turbine, and even to contribute to the proper organization of the flow of water sucked by the turbine.
- the plate 23 which combines the previous functions with that of protecting the space of the turbine and the turbine itself when the boat is on the ground. Indeed, this plate is attached to the lower shell so as to lie flat in the extension of the bottom 15 of the shell, which is itself generally flat.
- the figures show a grid 24 through which the water passes through the plate 23 when it is sucked by the turbine. It enters the latter between fixed wings 25 which guide it towards the inside of the body of the turbine.
- dampers 17 ensuring a silent mounting of the engine or the turbine, each on the support plates which receive them, on the other hand a housing 16 for a starter battery of the engine.
- the turbine ends with a steerable nozzle 26.
- the orientation of the nozzle 26 is controlled by pivoting about a vertical axis from the control stick 13. This command allows you to change the heading of the boat to the right or to the left.
- the control mechanism has not been shown in detail in the figures. It involves a mechanical transmission cable up to a linkage 27.
- the boat comprises for this purpose a retractable flag 28.
- This recoil flag is mounted tilting about a fixed horizontal axis. In the retracted position ( Figure 2), it is reassembled inside a complementary housing 29 formed above the space occupied by the nozzle. When it operates as a recoil member, it comes into lowered position to interpose on the jet exiting the nozzle. Only half of it is seen in FIG. 3. Its elongated bowl shape in the horizontal direction makes it effective whatever the orientation given to the nozzle, to the right or to the left. When the recoil flag is thus interposed in front of the jet expelled by the nozzle, the expelled water is discharged at sea through openings 31 pierced in the plate 23 on each side of the turbine.
- the motor driving the turbine is air-cooled. Its layout above the turbine inside the hull upper 2 promotes the choice of air cooling. rather than water taken from the sea (in a sense that includes any body of water where the boat is to evolve).
- the cooling air is taken at 32 to follow a circuit protected from splashing water by a baffle 33 forming part of the upper trunk 5.
- the orifice of the sampling circuit is located just above the level of the waterline , where the air is cool because of the proximity of the water table, and where, moreover, it is free of dust.
- the air used to cool the engine is collected in the space under the trunk 5. From there the cooling air circuit borrows the tail 4, whose interior is empty . The air is taken up by a vacuum fan located at 34 at the base of the tail (not shown in Figures 1 and 2). The air is evacuated to the atmosphere through the sun visor head 6. The latter is a diffuser by the multitude of orifices that it has through its upper wall. Its lower part is full. The hot air, possibly polluting, which has a tendency to rise is thus expelled without being able to flow back towards the passengers of the boat, which could be inconvenienced.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Hydraulic Turbines (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0412918A FR2878824A1 (fr) | 2004-12-03 | 2004-12-03 | Bateau de plaisance a propulsion par turbine |
PCT/IB2005/003651 WO2006059222A1 (fr) | 2004-12-03 | 2005-12-02 | Bateau de plaisance a propulsion par turbine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1827968A1 true EP1827968A1 (fr) | 2007-09-05 |
Family
ID=34954588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05810762A Withdrawn EP1827968A1 (fr) | 2004-12-03 | 2005-12-02 | Bateau de plaisance a propulsion par turbine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1827968A1 (fr) |
FR (1) | FR2878824A1 (fr) |
MA (1) | MA29106B1 (fr) |
WO (1) | WO2006059222A1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3948206A (en) * | 1974-09-06 | 1976-04-06 | Still Water Properties, N.V. | Jet powered watercraft |
ATE115929T1 (de) * | 1990-02-06 | 1995-01-15 | Reinhard Gabriel | Strahlantrieb für wasser- und luftfahrzeuge sowie umwälzpumpen. |
US5921825A (en) * | 1994-06-03 | 1999-07-13 | Larsson; Lars | High speed boat |
JP3541085B2 (ja) * | 1995-06-26 | 2004-07-07 | ヤマハマリン株式会社 | ジェットポンプ式推進装置のステアリング機構 |
US6247422B1 (en) * | 1998-09-04 | 2001-06-19 | J. P. Murray Co., Inc. | Planing watercraft hull and propulsion system |
US6890224B2 (en) * | 2003-06-02 | 2005-05-10 | Mccann John | Electric jet ski |
-
2004
- 2004-12-03 FR FR0412918A patent/FR2878824A1/fr active Pending
-
2005
- 2005-12-02 EP EP05810762A patent/EP1827968A1/fr not_active Withdrawn
- 2005-12-02 WO PCT/IB2005/003651 patent/WO2006059222A1/fr active Application Filing
-
2007
- 2007-06-20 MA MA30022A patent/MA29106B1/fr unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2006059222A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006059222A1 (fr) | 2006-06-08 |
MA29106B1 (fr) | 2007-12-03 |
FR2878824A1 (fr) | 2006-06-09 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20070622 |
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RAX | Requested extension states of the european patent have changed |
Extension state: HR Payment date: 20070622 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20080701 |