IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0135374
(2005-05-24)
|
우선권정보 |
FI-20000190(2000-01-28) |
발명자
/ 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
11 |
초록
▼
An arrangement for a ship's propulsion unit includes a motor unit with a motor housing arranged in the water. A motor and related controls are provided in the motor housing. A propeller is arranged at an end of a motor shaft. The motor unit includes an electric motor, wherein an entire circumferenti
An arrangement for a ship's propulsion unit includes a motor unit with a motor housing arranged in the water. A motor and related controls are provided in the motor housing. A propeller is arranged at an end of a motor shaft. The motor unit includes an electric motor, wherein an entire circumferential surface of the electrical motor is cooled through a casing structure of the motor directly to the water surrounding the motor unit.
대표청구항
▼
What is claimed is: 1. A propulsion arrangement for a ship comprising: a motor unit including: an electric motor; a motor casing; a motor shaft; a plurality of associated control devices; a propeller arranged at an end of the motor shaft extending from an end of the motor unit; and a fastening mean
What is claimed is: 1. A propulsion arrangement for a ship comprising: a motor unit including: an electric motor; a motor casing; a motor shaft; a plurality of associated control devices; a propeller arranged at an end of the motor shaft extending from an end of the motor unit; and a fastening means affixed to an axial end face of the motor unit opposite the propeller; and an attachment assembly attached to a bottom of the ship comprising: a supporting beam, and a corresponding fastening means provided at an end of the supporting beam, wherein at least a portion of the supporting beam is curved, wherein the fastening means at the axial end face of the motor unit engages the corresponding fastening means, and wherein cooling of the motor unit is effected over an entire circumferential surface area of the motor casing directly to ambient water contacting an outer surface of the motor casing. 2. The propulsion arrangement of claim 1, wherein the circumferential surface area of the motor casing used to cool the motor unit extends in an axial direction at least for a length of a rotor of the electric motor. 3. The propulsion arrangement of claim 1, wherein the motor unit further comprises a connector plug provided on the fastening means of the motor unit that engages a corresponding connector plug on the corresponding fastening means, wherein the connector plug and the corresponding connector plug provide connections between the ship and the motor unit for at least one of powering, monitoring, controlling, and lubricating the motor unit. 4. The propulsion arrangement of claim 1, the propulsion arrangement further comprising a circulating mechanism in association with the motor unit for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the ambient water contacting the outer surface of the motor casing. 5. The propulsion arrangement of claim 1, wherein an external surface of the attachment assembly forms part of a cooling system for at least a portion of the electric motor. 6. The propulsion arrangement of claim 5, wherein a circulating mechanism for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the water contacting the outer surface of the motor casing is arranged in the attachment assembly. 7. The propulsion arrangement of claim 1, wherein the outer surface of the motor casing includes formations, wherein the formations facilitate heat transfer from the electric motor to the ambient water. 8. The propulsion arrangement of claim 7, wherein the formations are cooling fins. 9. The propulsion arrangement of claim 7, wherein the formations extend at least for a length of a rotor of the electric motor. 10. The propulsion arrangement according to claim 1, wherein the attachment assembly is adapted to be rotatable around a vertical axis and is attached to the ship through a bottom thereof, and wherein an upper end of the attachment assembly comprises an arrangement means for turning the motor unit, for supplying power to the electric motor, and for controlling the motor unit arranged on the attachment assembly. 11. A propulsion arrangement for a ship, the arrangement comprising a motor unit located in water, the motor unit including an electric motor, a plurality of associated control devices, and a propeller arranged at an end of a motor shaft, wherein cooling of the electric motor is effected over an entire circumferential surface area of the electric motor directly to ambient water through a casing of the electric motor, wherein an attachment assembly that supports the motor unit is adapted to be rotatable around a vertical axis so that the attachment assembly is attached to the ship through an essentially horizontal bottom of the ship, wherein an upper end of the attachment assembly, which pivots, comprises an arrangement means for turning the motor unit, for supplying power to the electric motor, and for controlling the motor unit arranged on the attachment assembly, wherein the attachment assembly comprises an essentially vertical central body having circular portions which support and at least partially enclose the motor unit, wherein a free opening is defined between a central portion of said motor unit and the attachment assembly, and wherein the water, which is located around the motor unit and the electric motor, contacts heat emitting parts of the electric motor at least at a longitudinal central portion of the electric motor. 12. The propulsion arrangement of claim 11, wherein the longitudinal central portion of the electric motor extends in an axial direction at least for a length of a rotor of the electric motor. 13. The propulsion arrangement of claim 11, the motor unit further comprising a fastening means at an end of the motor unit opposite the propeller, the fastening means attaching the motor unit to corresponding fastening means provided on one of the circular portions of the attachment assembly. 14. The propulsion arrangement of claim 11, wherein the motor unit further comprises a connector plug provided on a fastening means of the motor unit that engages a corresponding connector plug on a corresponding fastening means, wherein the connector plug and the corresponding connector plug provide connections between the ship and the motor unit for at least one of powering, monitoring, controlling, and lubricating the motor unit. 15. The propulsion arrangement of claim 11, further comprising a circulating mechanism in association with the motor unit for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the ambient water contacting the outer surface of the motor casing. 16. The propulsion arrangement of claim 15, wherein the circulating mechanism for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the ambient water contacting the casing is arranged in the attachment assembly. 17. The propulsion arrangement of claim 11, wherein an external surface of the attachment assembly forms part of a cooling system for at least a portion of the electric motor. 18. The propulsion arrangement of claim 11, wherein an external surface of the casing includes formations which facilitate heat transfer. 19. The propulsion arrangement of claim 18, wherein the formations extend at least for a length of a rotor of the electric motor. 20. A propulsion arrangement for a ship comprising a motor unit including an electric motor, a motor casing, a motor shaft, a plurality of associated control devices, a propeller arranged at an end of the motor shaft extending from an end of the motor unit, a fastening means at an axial end of the motor unit opposite the propeller, the fastening means attaching the motor unit to a corresponding fastening means connected to a bottom of a ship, wherein cooling of the motor unit is effected over an entire circumferential area of the motor casing directly to ambient water contacting an outer surface of the motor casing, wherein the motor unit engages an attachment assembly at the axial end of the motor unit having the fastening means, and wherein an external surface of the attachment assembly forms part of a cooling system for at least a portion of the electric motor, and wherein a circulating mechanism for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the water contacting the outer surface of the motor casing is arranged in the attachment assembly. 21. The propulsion arrangement of claim 20, wherein the circumferential surface area of the motor casing used to cool the motor unit extends in an axial direction at least for a length of a rotor of the electric motor. 22. The propulsion arrangement of claim 20, wherein the motor unit further comprises a connector plug provided on the fastening means of the motor unit that engages a corresponding connector plug on the corresponding fastening means, wherein the connector plug and the corresponding connector plug provide connections between the ship and the motor unit for at least one of powering, monitoring, controlling, and lubricating the motor unit. 23. The propulsion arrangement of claim 20, the propulsion arrangement further comprising a circulating mechanism in association with the motor unit for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the ambient water contacting the outer surface of the motor casing. 24. The propulsion arrangement of claim 20, wherein the outer surface of the motor casing includes formations, wherein the formations facilitate heat transfer from the electric motor to the ambient water. 25. The propulsion arrangement of claim 24, wherein the formations are cooling fins. 26. The propulsion arrangement of claim 24, wherein the formations extend at least for a length of a rotor of the electric motor. 27. The propulsion arrangement according to claim 20, wherein the attachment assembly is adapted to be rotatable around a vertical axis and is attached to the ship through a bottom thereof, and wherein an upper end of the attachment assembly comprises an arrangement means for turning the motor unit, for supplying power to the electric motor, and for controlling the motor unit arranged on the attachment assembly. 28. The arrangement according to claim 27, wherein the attachment assembly comprises a supporting beam, wherein one end of the supporting beam includes the corresponding fastening means for engaging the fastening means at the axial end of the motor unit. 29. A propulsion arrangement for a ship comprising a motor unit including an electric motor, a motor casing, a motor shaft, a plurality of associated control devices, a propeller arranged at an end of the motor shaft extending from an end of the motor unit, a fastening means at an axial end of the motor unit opposite the propeller, the fastening means attaching the motor unit to a corresponding fastening means connected to a bottom of a ship, wherein cooling of the motor unit is effected over an entire circumferential surface area of the motor casing directly to ambient water contacting an outer surface of the motor casing, wherein the corresponding fastening means for attaching the fastening means on the axial end of the motor unit opposite the propeller is provided on a substantially vertical surface of the bottom of the ship. 30. The propulsion arrangement of claim 29, wherein the circumferential surface area of the motor casing used to cool the motor unit extends in an axial direction at least for a length of a rotor of the electric motor. 31. The propulsion arrangement of claim 29, wherein the motor unit further comprises a connector plug provided on the fastening means of the motor unit that engages a corresponding connector plug on the corresponding fastening means, wherein the connector plug and the corresponding connector plug provide connections between the ship and the motor unit for at least one of powering, monitoring, controlling, and lubricating the motor unit. 32. The propulsion arrangement of claim 29, the propulsion arrangement further comprising a circulating mechanism in association with the motor unit for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the ambient water contacting the outer surface of the motor casing. 33. The propulsion arrangement of claim 29, wherein the outer surface of the motor casing includes formations, wherein the formations facilitate heat transfer from the electric motor to the ambient water. 34. The propulsion arrangement of claim 33, wherein the formations are cooling fins. 35. The propulsion arrangement of claim 33, wherein the formations extend at least for a length of a rotor of the electric motor. 36. A propulsion arrangement for a ship comprising: a motor unit comprising: a motor casing; a propeller arranged at an end of the motor unit; and a fastener affixed to an axial end face of the motor unit opposite the propeller; and an attachment assembly attached to a bottom of the ship comprising: a supporting beam; and a corresponding fastener provided at an end of the supporting beam, wherein at least a portion of the supporting beam is curved, wherein the fastener engages the corresponding fastener, and wherein cooling of the motor unit is effected over an entire circumferential surface area of the motor casing directly to ambient water contacting an outer surface of the motorcasing. 37. The propulsion arrangement for a ship according to claim 36, wherein the attachment assembly is adapted to be rotatable around a vertical axis, and wherein the attachment assembly is attached to the ship through a bottom thereof. 38. A propulsion arrangement for a ship comprising a motor unit including an electric motor, a motor casing, a motor shaft, a plurality of associated control devices, a propeller arranged at an end of the motor shaft extending from an end of the motor unit, a fastening means affixed to an axial end face of the motor unit opposite the propeller, the fastening means attaching the motor unit to a corresponding fastening means connected to a bottom of a ship, wherein cooling of the motor unit is effected over an entire circumferential surface area of the motor casing directly to ambient water contacting an outer surface of the motor casing, and wherein a circulating mechanism for setting in motion a separate medium located in the motor unit to enhance heat transfer between the electric motor and the water contacting the outer surface of the motor casing is arranged in the attachment assembly. 39. A propulsion arrangement for a ship comprising a motor unit including an electric motor, a motor casing, a motor shaft, a plurality of associated control devices, a propeller arranged at an end of the motor shaft extending from an end of the motor unit, a fastening means affixed to an axial end face of the motor unit opposite the propeller, the fastening means attaching the motor unit to a corresponding fastening means connected to a bottom of a ship, wherein cooling of the motor unit is effected over an entire circumferential surface area of the motor casing directly to ambient water contacting an outer surface of the motor casing, and wherein the corresponding fastening means for attaching the fastening means on the axial end face of the motor unit opposite the propeller is provided on a substantially vertical surface of the bottom of the ship.
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