EP2109565A1 - Strahlantrieb - Google Patents
StrahlantriebInfo
- Publication number
- EP2109565A1 EP2109565A1 EP08707069A EP08707069A EP2109565A1 EP 2109565 A1 EP2109565 A1 EP 2109565A1 EP 08707069 A EP08707069 A EP 08707069A EP 08707069 A EP08707069 A EP 08707069A EP 2109565 A1 EP2109565 A1 EP 2109565A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- bearing
- housing
- ring
- jet
- 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.)
- Granted
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
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/16—Propellers having a shrouding ring attached to blades
- B63H2001/165—Hubless propellers, e.g. peripherally driven shrouds with blades projecting from the shrouds' inside surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H2023/005—Transmitting power from propulsion power plant to propulsive elements using a drive acting on the periphery of a rotating propulsive element, e.g. on a dented circumferential ring on a propeller, or a propeller acting as rotor of an electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/22—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing
- B63H23/24—Transmitting power from propulsion power plant to propulsive elements with non-mechanical gearing electric
Definitions
- the invention relates to a jet propulsion, in particular for watercraft.
- Such jet drives a plurality of rotor blades are arranged on the inner circumference of the rotor, which extend up to the region of the axis of rotation of the rotor and leave there a space. The free ends of the rotor blades thus do not touch, and there is no hub provided. Furthermore, such a jet drive comprises a housing in which the rotor is rotatably mounted. The rotor is associated with an electric motor with rotor ring and stator ring. Rotor ring and stator are arranged coaxially with the rotor, and the rotor ring is rotatably connected to the rotor.
- jet drives have numerous advantages over conventional jet drives. They are of relatively simple construction, therefore inexpensive to manufacture, and also have a relatively low efficiency. Nevertheless, such jet drives can be improved, in particular as far as the efficiency is concerned.
- the invention has for its object to design a jet drive of the type mentioned in such a way that the efficiency compared to previously known jet drives of this type is improved.
- a jet drive of the known type is carried out in a tandem arrangement.
- two rotors are used and two electric motors, which are each arranged axially adjacent to each other as a unit. It can be provided a single housing that encloses the two units in the axial direction.
- the tandem arrangement results in a higher energy yield during operation. The efficiency is thus greater than in a single jet drive with only a single unit of rotor and electric motor.
- the tandem design according to the invention is more flexible in operation. So you do not have to operate both units at the same time. Rather, one or the other unit can be switched off or then switched on.
- a load shift from a front to a rear rotor can be made with increasing speed.
- the increase in pressure experienced by the rear propeller minimizes the risk of cavitation.
- FIG. 1 shows a jet drive in an axially perpendicular view.
- FIG. 2 shows the subject matter of FIG. 1 in an axial section, in accordance with the section line A - A in FIG. 1.
- FIG. 3 again shows an axial section through a jet drive with two
- Figure 4 shows a perspective, enlarged view of a section of the storage area.
- FIG. 1 shows the blades 1 of the rotor of the first of the two units. In this case, there are seven leaves. But it could also be more or less. As you can see, the free ends of the leaves point to the center of the jet unit, leaving a space between the free ends.
- Each unit comprises the following components: a rotor 3 or 4, on which the blades 1 and 2 are fixed, a rotor ring 5 and 6 and a stator 7 and 8, respectively, which is embedded in a housing 9 and 10 respectively.
- a rotor 3 or 4 on which the blades 1 and 2 are fixed
- a rotor ring 5 and 6 and a stator 7 and 8, respectively, which is embedded in a housing 9 and 10 respectively.
- a spacer flange 11 is provided between the two units.
- a bearing flange 12 or 13 is provided at the outer ends of the two housings.
- the axial distance between the two rotors should be as small as possible. It is therefore desirable to dimension the said spacer flange 11 in the axial direction as small as possible. It could for example consist of a very thin sheet, which is only a few millimeters thick, for example 1 to 3 mm, or less than 1 mm, for example 0.5 to 1, 0 mm.
- the axial distance should generally be less than 10 percent of the axial rotor size.
- the two electric motors are designed so that they rotate in opposite directions. This is structurally well feasible in the design of the jet propulsion system chosen here, because this unit is hullless.
- FIG. 3 shows details of a further embodiment of the jet drive according to the invention somewhat more precisely.
- the rotor blades are omitted for greater clarity. It can be seen again the two rotors 3 and 4, with these rotatably connected rotor rings 5 and 6 and the stator 7 and 8, respectively. The whole is enclosed by a housing 9 and 10 respectively.
- the bearings play an important role.
- the jet engine is completely flooded.
- the bearings are made of seawater-proof carbide.
- the structure of the bearings can be seen from Figure 4. See there the bearing segments 14, 15 which are embedded in the housing 9 and 10 respectively.
- the bearing segments 14, 15 are dovetail-shaped in cross-section, and the housing has corresponding recesses. -5
- the bearing segments 14, 15 can be arranged at a certain mutual distance d. If this is the case, the grooves between the bearing segments are constantly flushed through, which means additional cooling of the bearing of the electric motor.
- Two or more units can be connected axially in series. 5 Thus, three or four or even more units can be considered.
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)
- Surgical Instruments (AREA)
- Percussion Or Vibration Massage (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10015423A EP2292510A1 (de) | 2007-01-17 | 2008-01-16 | Strahlantrieb |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007002519A DE102007002519A1 (de) | 2007-01-17 | 2007-01-17 | Strahlantireb |
PCT/EP2008/000303 WO2008087020A1 (de) | 2007-01-17 | 2008-01-16 | Strahlantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2109565A1 true EP2109565A1 (de) | 2009-10-21 |
EP2109565B1 EP2109565B1 (de) | 2010-12-22 |
Family
ID=39322667
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10015423A Withdrawn EP2292510A1 (de) | 2007-01-17 | 2008-01-16 | Strahlantrieb |
EP08707069A Not-in-force EP2109565B1 (de) | 2007-01-17 | 2008-01-16 | Strahlantrieb |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10015423A Withdrawn EP2292510A1 (de) | 2007-01-17 | 2008-01-16 | Strahlantrieb |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP2292510A1 (de) |
AT (1) | ATE492466T1 (de) |
DE (2) | DE102007002519A1 (de) |
WO (1) | WO2008087020A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2650986T3 (es) * | 2008-05-27 | 2018-01-23 | Siemens Aktiengesellschaft | Turbomáquina con al menos dos rotores |
DE102009021548A1 (de) | 2009-05-15 | 2010-11-25 | Voith Patent Gmbh | Strahlantrieb mit wenigstens einer Antriebseinheit |
DE102010049493B4 (de) | 2010-10-27 | 2020-12-10 | Voith Patent Gmbh | Kippsegmentlager |
CN102336261B (zh) * | 2011-09-07 | 2013-09-18 | 王仁夫 | 无轴螺旋桨推进器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3300380A1 (de) * | 1983-01-07 | 1984-07-12 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Unterwasserpropellerantrieb |
US5185545A (en) * | 1990-08-23 | 1993-02-09 | Westinghouse Electric Corp. | Dual propeller shock resistant submersible propulsor unit |
FR2788032B1 (fr) * | 1998-12-30 | 2002-03-22 | Jeumont Ind | Dispositif de propulsion d'un batiment naval |
US6458004B2 (en) * | 2000-02-15 | 2002-10-01 | Van Breems Martinus | Electric propulsion systems |
USD543928S1 (en) * | 2003-01-23 | 2007-06-05 | Ufoz, Llc | Hovercraft with stacked rotor thruster and winglets |
DE10353566A1 (de) | 2003-11-14 | 2005-06-23 | Reinhard Gabriel | Strahlantrieb |
US20050251007A1 (en) | 2004-04-22 | 2005-11-10 | Ansel Gary M | Device for use during medical procedures |
NL1029389C2 (nl) * | 2005-06-30 | 2007-01-04 | Marifin Beheer B V | Asloze schroef. |
DE202006008866U1 (de) * | 2006-06-06 | 2006-11-16 | Rubinraut, Alexander | Schiffsantrieb mit Rudergondel |
-
2007
- 2007-01-17 DE DE102007002519A patent/DE102007002519A1/de not_active Withdrawn
-
2008
- 2008-01-16 EP EP10015423A patent/EP2292510A1/de not_active Withdrawn
- 2008-01-16 AT AT08707069T patent/ATE492466T1/de active
- 2008-01-16 DE DE502008002069T patent/DE502008002069D1/de active Active
- 2008-01-16 WO PCT/EP2008/000303 patent/WO2008087020A1/de active Application Filing
- 2008-01-16 EP EP08707069A patent/EP2109565B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2008087020A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102007002519A1 (de) | 2008-07-31 |
EP2292510A1 (de) | 2011-03-09 |
DE502008002069D1 (de) | 2011-02-03 |
EP2109565B1 (de) | 2010-12-22 |
ATE492466T1 (de) | 2011-01-15 |
WO2008087020A1 (de) | 2008-07-24 |
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