Shock-proof electric marine engine, e.g. engine or generator

• US 20050042944A1
• Filed: 08/30/2002
• Published: 02/24/2005
• Est. Priority Date: 08/30/2001
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Hofmann, Thomas, Hein, Peter, Brach, Karsten, Schiller, Christian, Meyer, Christian, Kruger-Gotzmann, Manfred, Wilcke, Ralf, Vogeley, Peter
• Granted Patent: US 7,029,339 B2
• Time in Patent Office: Days
• US Class Current: 440/6
• CPC Class Codes: B63G 13/00 Other offensive or defensive arrangements on vessels; Vessels characterised thereby
• CPC Class Codes: B63H 2005/1258 with electric power transmission to propellers, i.e. with integrated electric propeller motors
• CPC Class Codes: B63H 2021/173 making use of superconductivity
• CPC Class Codes: B63H 23/24 electric dynamo-electric machines H02K
• CPC Class Codes: B63H 5/125 movably mounted with respect to hull, e.g. adjustable in direction , e.g. podded azimuthing thrustersoutboard units or Z-drives B63H20/00; movably mounted for steering purposes only, rudders carrying propellers B63H25/42
• CPC Class Codes: H02K 1/185 to outer stators
• CPC Class Codes: H02K 1/30 using intermediate parts, e.g. spiders
• CPC Class Codes: H02K 5/20 with channels or ducts for flow of cooling medium
• CPC Class Codes: H02K 5/24 specially adapted for suppression or reduction of noise or vibrations
• CPC Class Codes: H02K 55/04 with rotating field windings
• CPC Class Codes: H02K 7/08 Structural association with bearings
• CPC Class Codes: H02K 7/083 radially supporting the rotary shaft at both ends of the rotor H02K7/086, H02K7/09 take precedence
• CPC Class Codes: H02K 7/088 radially supporting the rotor directly
• CPC Class Codes: H02K 7/12 with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 70/50 Measures to reduce greenhouse gas emissions related to the propulsion system

Abstract

The invention relates to a shock-proof electric marine engine e.g. an engine or generator, for a marine (Navy) ship, comprising a stator and a rotor in a housing, whereby the stator and the rotor are connected in such a way that they are rotatably displaceable in a counter direction and in a radial/axial manner with limited slack. Said rotor and stator form a displaceable unit in relation to the housing, which can be displaced away from the housing with a higher vibration overshoot range. Said housing is elastically connected to the marine(navy) ship.

Claims

1. A shock-resistant electrical machine, comprising:

a housing elastically connected to a marine vessel;

a unit, including a stator and a rotor, located in the housing and adapted to move with respect to the housing, wherein the rotor is connected to a propulsion shaft and the stator and rotor are at least one of radially and axially connected to one another with restricted play so as to be rotateable with respect to one another, wherein the unit is adapted to flex further with respect to the housing than a normal extent of noise-inducing vibration oscillation, wherein the rotor includes a tube-like mounting body and an active part mounted on the mounting body, the rotor being elastically supported on the propulsion shaft, and wherein the stator is mounted on the mounting body of the rotor and is elastically supported on the housing.

2. The shock-resistant electrical machine as claimed in claim 1, wherein the housing includes a streamlined housing arranged like a gondola on a lower surface of the hull of the marine vessel, with at least one propeller being coupled to the propulsion shaft that is connected to the rotor, and with the stator being fixed on the rotor via rotating bearings, and wherein the unit is elastically supported both on the housing and on the propulsion shaft, with an air gap of 0.5 to 50 mm being formed between the rotor and stator.

3. The shock-resistant electrical machine as claimed in claim 1, wherein the housing of the machine is arranged on an elastically

mounted base frame inside the vessel, with the propulsion shaft including an elastic coupling to at least one of a propeller shaft and a water jet impeller shaft.

4. The shock-resistant electrical machine as claimed in claim 1, wherein the support for the rotor on the propulsion shaft is relatively soft in the axial and radial directions, and is relatively torsionally stiff in the circumferential direction.

5. The shock-resistant electrical machine as claimed in claim 1, wherein the rotating bearings are in the form of roller bearings.

6. The shock-resistant electrical machine as claimed in claim 1, wherein the bearings for bearing the propulsion shaft are in the form of sliding bearings.

7. The shock-resistant electrical machine as claimed in claim 1, wherein the motor is water-cooled.

8. The shock-resistant electrical machine as claimed in claim 7, wherein the stator includes a cooling apparatus in which the cooling water for cooling the motor is passed via cooling channels.

9. The shock-resistant electrical machine as claimed in claim 8, wherein the cooling channels are in the form of radial channels.

10. The shock-resistant electrical machine as claimed in claim 8, wherein the cooling channels are in the form of circumferential channels which run on the circumference of the stator.

11. The shock-resistant electrical machine as claimed in claim 8, wherein the cooling channels are in the form of axial channels.

12. The shock-resistant electrical machine as claimed in claim 8, wherein the cooling channels are connected to at least one water chamber, acting as a distributor.

13. The shock-resistant electrical machine as claimed in claim 1, wherein the stator includes a winding with end windings around which cooling air flows.

14. The shock-resistant electrical machine as claimed in claim 1, wherein the motor is in the form of a motor with permanent-magnet excitation.

15. The shock-resistant electrical marine machine as claimed in claim 14, wherein the stator is designed to be rotateable via slide rings in the housing, for example by means of a stator yoke which can rotate.

16. The shock-resistant electrical marine machine as claimed in claim 1, wherein the machine is at least one of a motor and generator for a navy vessel.

17. The shock-resistant electrical marine machine as claimed in claim 2, wherein the support for the rotor on the propulsion shaft is relatively soft in the axial and radial directions, and is relatively torsionally stiff in the circumferential direction.

18. The shock-resistant electrical marine machine as claimed in claim 3, wherein the support for the rotor on the propulsion shaft is relatively soft in the axial and radial directions, and is relatively torsionally stiff in the circumferential direction.

19. The shock-resistant electrical marine machine as claimed in claim 8, wherein the cooling channels are in the form of meandering channels which run on the circumference of the stator.

20. The shock-resistant electrical marine machine as claimed in claim 14, wherein the stator is designed to be rotateable via slide rings in the housing, by way of a rotateable stator yoke.

21. A unit for a shock-resistant machine of a marine vessel, comprising:

a stator; and

a rotor, wherein the stator and rotor are at least one of radially and axially connected to one another with restricted play so as to be rotateable with respect to one another, wherein the rotor includes a tube-like mounting body and an active part mounted on the mounting body, the rotor being elastically supported on a propulsion shaft of the marine vessel, and wherein the stator is mounted on the mounting body of the rotor.