CA2856020C - Ship's propulsion unit - Google Patents
Ship's propulsion unit Download PDFInfo
- Publication number
- CA2856020C CA2856020C CA2856020A CA2856020A CA2856020C CA 2856020 C CA2856020 C CA 2856020C CA 2856020 A CA2856020 A CA 2856020A CA 2856020 A CA2856020 A CA 2856020A CA 2856020 C CA2856020 C CA 2856020C
- Authority
- CA
- Canada
- Prior art keywords
- shell structure
- section
- motor housing
- propulsion unit
- housing section
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000002356 single layer Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 description 2
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
- B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
- B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/30—Mounting of propulsion plant or unit, e.g. for anti-vibration purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/36—Covers or casing arranged to protect plant or unit from marine environment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/12—Heating; Cooling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
- B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
- B63H2005/1258—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis with electric power transmission to propellers, i.e. with integrated electric propeller motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Motor Or Generator Frames (AREA)
- Toys (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention relates to a ship's propulsion unit such as a ship's azimuthing propulsion unit. The propulsion unit comprises at least one supporting metal sheet (12) arranged between an support section (11) of a shell structure (1) of the propulsion unit and an cylindrical outer surface (10) of a cylindrical section (9) of a motor housing section (8) of the shell structure (1) for providing additional support for the motor housing section (8) of the shell structure (1) at the shell structure (1) of the support section (11).
Description
, SHIP'S PROPULSION UNIT
Field of the invention The invention relates to a ship's propulsion unit such as a ship's azimuthing propulsion unit.
A ship's propulsion unit is presented in document W00154973.
Objective of the invention An object of the invention is to provide a ship's propulsion unit that provides both for effective cooling of an electrical motor in a motor housing section of a shell structure of the propulsion unit to water surrounding the shell structure of the propulsion unit and for rigid support of the motor housing section of the shell structure at a support section of the shell structure.
Short description of the invention The ship's propulsion unit of the invention is described herein.
Preferred embodiments of the ship's propulsion unit are described herein.
According to an aspect of the present invention, there is provided a ship's propulsion unit such as a ship's azimuthing propulsion unit, wherein the propulsion unit comprising a shell structure arranged below a hull of the ship and immersible at least partly in water so that the shell structure is at least partly surrounded by water, and an electric motor for rotating a propeller axis, wherein the propeller axis extends to the outside of the shell structure a propeller mounted on the propeller axis outside the shell structure, wherein the propulsion unit having a vertical longitudinal central plane, wherein the electric motor having a stator and a rotor for rotating in the stator, wherein the electric motor is arranged in a motor housing section of the shell structure so that the stator of the electric motor is form-fitted into a cylindrical section of the motor housing section of the shell structure, wherein the cylindrical section having a cylindrical outer surface, wherein the shell structure includes a support section having an lower end directly connected to the motor housing section of the shell structure and an upper end connected to the hull of the ship, and la wherein the motor housing section of the shell structure having a first end from which the propeller axis extends to the outside of the shell structure and a second end at the opposite end of the motor housing section of the shell structure, characterized by at least one supporting metal sheet arranged between the support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure for providing additional support for the motor housing section of the shell structure at the shell structure of the support section, by said at least one supporting metal sheet having a first side surface and a second side surface, by said at least one supporting metal sheet being fastened to the support section of the shell structure and fastened to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and by water surrounding the shell structure being in contact with both the first side surface and the second side surface of said at least one supporting metal sheet.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the lower end of the support section of the shell structure being directly connected to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure by means of a first connection section of the support section of the shell structure at a region of the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure that is closer to the second end of the motor housing section of the shell structure than to the first end of the motor housing section of the shell structure, by the support section of the shell structure having a lower surface that is located at a distance from the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure and that faces the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure so that a space is formed between the lower surface of support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and by the part of the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure that is located in the space is in direct contact with water surrounding the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized lb by the lower end of the support section of the shell structure being additionally directly connected to cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure by means of a second connection section of the support section of the shell structure at a region of the motor housing section of the shell structure that is closer to the first end of the motor housing section of the shell structure than to the second end of the motor housing section of the shell structure, and by said space being formed between the first connection section of the support section of the shell structure and the second connection section of the support section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said at least one supporting metal sheet forming a closing structure arranged to partly close said space so that water surrounding the shell structure can enter the space between and so that the water can exit the space between.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by at least one supporting metal sheet forming a closing structure arranged to partly close said space forming a vertical extension of the support structure, which vertical extension extends between the support structure of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said at least one supporting metal sheet arranged to partly close said space so that a forward opening forming an inlet and/or an outlet for water is formed and so that a rear opening forming an outlet and/or an inlet for water is formed.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by supporting metal sheet forming closing structure arranged to partly close said space between being arranged symmetrically at both sides of space with respect to the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by a plurality of supporting metal sheets each being arranged being fastened to the support section of the shell structure and to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure.
lc According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by some of said plurality of supporting metal sheets extending vertically at the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by some supporting metal sheets of said plurality of supporting metal sheets extending vertically at the vertical longitudinal central plane of the propulsion unit, and by some supporting metal sheets of said plurality of supporting metal sheets extending vertically and transversely with respect to the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said plurality of supporting metal sheet being arranged symmetrically with respect to the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the electric motor being a permanent-magnet electric motor.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the cylindrical section of the motor housing section of the shell structure being of a single-layer form.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said at least one supporting metal sheet being of a single-layer form.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the motor housing section includes a first detachable section at the first end of the motor housing section of the shell structure, by the first detachable section of the motor housing section housing a bearing arrangement for the propeller axis, and by the first detachable section of the motor housing section being unattached to the support section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized ld by the motor housing section includes a second detachable section at the second end of the motor housing section of the shell structure, by the second detachable section of the motor housing section housing a bearing arrangement for the propeller axis, and by the second detachable section of the motor housing section being unattached to the support section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the lower end of the support section being directly connected to the motor housing section of the shell structure so that the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure partly forms the outermost surface of the propulsion unit.
The ship's propulsion unit comprises a shell structure arranged below a hull of the ship and immersible at least partly in water so that the shell structure is at least partly surrounded by water. The ship's propulsion unit comprises an electric motor for rotating a propeller axis. The propeller axis extends to the outside of the shell structure. A propeller is mounted on the propeller axis outside the shell structure. The propulsion unit has a vertical longitudinal central plane. The electric motor has a stator and a rotor for rating in the stator. The electric motor is arranged in a motor housing section of the shell structure so that the stator of the electric motor is form-fitted into a cylindrical section of the motor housing section of the shell structure. The cylindrical section has a cylindrical outer surface. The shell structure includes a support section having an lower end directly connected to the motor housing section of the shell structure and an upper end connected to the hull of the ship. The motor housing section of the shell structure has a first end from which the propeller axis extends to the outside of the shell structure and a second end at the opposite end of the motor housing section of the shell structure.
The invention is based on arranging at least one supporting metal sheet between the support section of the shell structure and a cylindrical outer surface of a cylindrical section of the motor housing section of the shell structure for providing additional support for the motor housing section 8 of the shell structure 1 at the shell structure 1 of the support section.
Because said at least one supporting metal sheet has a first side surface and a second side surface and because said at least one supporting metal sheet is fastened to the support section of the shell structure and fastened to the cylindrical outer surface of the cylindrical section of the
Field of the invention The invention relates to a ship's propulsion unit such as a ship's azimuthing propulsion unit.
A ship's propulsion unit is presented in document W00154973.
Objective of the invention An object of the invention is to provide a ship's propulsion unit that provides both for effective cooling of an electrical motor in a motor housing section of a shell structure of the propulsion unit to water surrounding the shell structure of the propulsion unit and for rigid support of the motor housing section of the shell structure at a support section of the shell structure.
Short description of the invention The ship's propulsion unit of the invention is described herein.
Preferred embodiments of the ship's propulsion unit are described herein.
According to an aspect of the present invention, there is provided a ship's propulsion unit such as a ship's azimuthing propulsion unit, wherein the propulsion unit comprising a shell structure arranged below a hull of the ship and immersible at least partly in water so that the shell structure is at least partly surrounded by water, and an electric motor for rotating a propeller axis, wherein the propeller axis extends to the outside of the shell structure a propeller mounted on the propeller axis outside the shell structure, wherein the propulsion unit having a vertical longitudinal central plane, wherein the electric motor having a stator and a rotor for rotating in the stator, wherein the electric motor is arranged in a motor housing section of the shell structure so that the stator of the electric motor is form-fitted into a cylindrical section of the motor housing section of the shell structure, wherein the cylindrical section having a cylindrical outer surface, wherein the shell structure includes a support section having an lower end directly connected to the motor housing section of the shell structure and an upper end connected to the hull of the ship, and la wherein the motor housing section of the shell structure having a first end from which the propeller axis extends to the outside of the shell structure and a second end at the opposite end of the motor housing section of the shell structure, characterized by at least one supporting metal sheet arranged between the support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure for providing additional support for the motor housing section of the shell structure at the shell structure of the support section, by said at least one supporting metal sheet having a first side surface and a second side surface, by said at least one supporting metal sheet being fastened to the support section of the shell structure and fastened to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and by water surrounding the shell structure being in contact with both the first side surface and the second side surface of said at least one supporting metal sheet.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the lower end of the support section of the shell structure being directly connected to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure by means of a first connection section of the support section of the shell structure at a region of the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure that is closer to the second end of the motor housing section of the shell structure than to the first end of the motor housing section of the shell structure, by the support section of the shell structure having a lower surface that is located at a distance from the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure and that faces the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure so that a space is formed between the lower surface of support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and by the part of the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure that is located in the space is in direct contact with water surrounding the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized lb by the lower end of the support section of the shell structure being additionally directly connected to cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure by means of a second connection section of the support section of the shell structure at a region of the motor housing section of the shell structure that is closer to the first end of the motor housing section of the shell structure than to the second end of the motor housing section of the shell structure, and by said space being formed between the first connection section of the support section of the shell structure and the second connection section of the support section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said at least one supporting metal sheet forming a closing structure arranged to partly close said space so that water surrounding the shell structure can enter the space between and so that the water can exit the space between.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by at least one supporting metal sheet forming a closing structure arranged to partly close said space forming a vertical extension of the support structure, which vertical extension extends between the support structure of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said at least one supporting metal sheet arranged to partly close said space so that a forward opening forming an inlet and/or an outlet for water is formed and so that a rear opening forming an outlet and/or an inlet for water is formed.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by supporting metal sheet forming closing structure arranged to partly close said space between being arranged symmetrically at both sides of space with respect to the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by a plurality of supporting metal sheets each being arranged being fastened to the support section of the shell structure and to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure.
lc According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by some of said plurality of supporting metal sheets extending vertically at the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by some supporting metal sheets of said plurality of supporting metal sheets extending vertically at the vertical longitudinal central plane of the propulsion unit, and by some supporting metal sheets of said plurality of supporting metal sheets extending vertically and transversely with respect to the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said plurality of supporting metal sheet being arranged symmetrically with respect to the vertical longitudinal central plane of the propulsion unit.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the electric motor being a permanent-magnet electric motor.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the cylindrical section of the motor housing section of the shell structure being of a single-layer form.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by said at least one supporting metal sheet being of a single-layer form.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the motor housing section includes a first detachable section at the first end of the motor housing section of the shell structure, by the first detachable section of the motor housing section housing a bearing arrangement for the propeller axis, and by the first detachable section of the motor housing section being unattached to the support section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized ld by the motor housing section includes a second detachable section at the second end of the motor housing section of the shell structure, by the second detachable section of the motor housing section housing a bearing arrangement for the propeller axis, and by the second detachable section of the motor housing section being unattached to the support section of the shell structure.
According to another aspect of the present invention, there can be provided the propulsion unit described herein, characterized by the lower end of the support section being directly connected to the motor housing section of the shell structure so that the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure partly forms the outermost surface of the propulsion unit.
The ship's propulsion unit comprises a shell structure arranged below a hull of the ship and immersible at least partly in water so that the shell structure is at least partly surrounded by water. The ship's propulsion unit comprises an electric motor for rotating a propeller axis. The propeller axis extends to the outside of the shell structure. A propeller is mounted on the propeller axis outside the shell structure. The propulsion unit has a vertical longitudinal central plane. The electric motor has a stator and a rotor for rating in the stator. The electric motor is arranged in a motor housing section of the shell structure so that the stator of the electric motor is form-fitted into a cylindrical section of the motor housing section of the shell structure. The cylindrical section has a cylindrical outer surface. The shell structure includes a support section having an lower end directly connected to the motor housing section of the shell structure and an upper end connected to the hull of the ship. The motor housing section of the shell structure has a first end from which the propeller axis extends to the outside of the shell structure and a second end at the opposite end of the motor housing section of the shell structure.
The invention is based on arranging at least one supporting metal sheet between the support section of the shell structure and a cylindrical outer surface of a cylindrical section of the motor housing section of the shell structure for providing additional support for the motor housing section 8 of the shell structure 1 at the shell structure 1 of the support section.
Because said at least one supporting metal sheet has a first side surface and a second side surface and because said at least one supporting metal sheet is fastened to the support section of the shell structure and fastened to the cylindrical outer surface of the cylindrical section of the
2 motor housing section of the shell structure, water surrounding the shell structure is in contact with both the first side surface and the second side surface of said at least one supporting metal sheet. This supporting leaves most of the cylindrical outer surface of a cylindrical section of the motor housing section of the shell structure exposed to water surrounding the shell structure of the propulsion unit and provides therefore for effective cooling of the electrical motor in the motor housing section of the shell structure to water surrounding the shell structure of the propulsion unit.
List of figures In the following the invention will described in more detail by referring to the figures, which Figure 1 shows a ship's propulsion unit according to the prior art, Figure 2 shows the ship's propulsion unit shown in figure 1 as cut along line X-X in figure 1, Figure 3 shows the ship's propulsion unit shown in figure 1 as cut along line Y-Y in figure 1, Figure 4 shows a first embodiment of the ship's propulsion unit, Figure 5 shows the ship's propulsion unit shown in figure 4 as cut along line X-X in figure 4, Figure 6 shows the ship's propulsion unit shown in figure 4 as cut along line Y-Y in figure 4, Figure 7 shows a second embodiment of the ship's propulsion unit, Figure 8 shows the ship's propulsion unit shown in figure 7 as cut along line X-X in figure 7, Figure 9 shows the ship's propulsion unit shown in figure 7 as cut along line Y-Y in figure 7, Figure 10 shows an alternative configuration of section Y-Y of the ship's propulsion unit shown in figure 7, Figure 11 shows a third embodiment of the ship's propulsion unit, Figure 12 shows the ship's propulsion unit shown in figure 11 as cut along line X-X in figure 11, Figure 13 shows the ship's propulsion unit shown in figure 11 as cut along line Y-Y in figure 11, Figure 14 shows a fourth embodiment of the ship's propulsion unit, Figure 15 shows the ship's propulsion unit shown in figure 14 as cut along line Z-Z in figure 14, Figure 16 shows the ship's propulsion unit shown in figure 14 as cut along line X-X in
List of figures In the following the invention will described in more detail by referring to the figures, which Figure 1 shows a ship's propulsion unit according to the prior art, Figure 2 shows the ship's propulsion unit shown in figure 1 as cut along line X-X in figure 1, Figure 3 shows the ship's propulsion unit shown in figure 1 as cut along line Y-Y in figure 1, Figure 4 shows a first embodiment of the ship's propulsion unit, Figure 5 shows the ship's propulsion unit shown in figure 4 as cut along line X-X in figure 4, Figure 6 shows the ship's propulsion unit shown in figure 4 as cut along line Y-Y in figure 4, Figure 7 shows a second embodiment of the ship's propulsion unit, Figure 8 shows the ship's propulsion unit shown in figure 7 as cut along line X-X in figure 7, Figure 9 shows the ship's propulsion unit shown in figure 7 as cut along line Y-Y in figure 7, Figure 10 shows an alternative configuration of section Y-Y of the ship's propulsion unit shown in figure 7, Figure 11 shows a third embodiment of the ship's propulsion unit, Figure 12 shows the ship's propulsion unit shown in figure 11 as cut along line X-X in figure 11, Figure 13 shows the ship's propulsion unit shown in figure 11 as cut along line Y-Y in figure 11, Figure 14 shows a fourth embodiment of the ship's propulsion unit, Figure 15 shows the ship's propulsion unit shown in figure 14 as cut along line Z-Z in figure 14, Figure 16 shows the ship's propulsion unit shown in figure 14 as cut along line X-X in
3 figure 14, Figure 17 shows the ship's propulsion unit shown in figure 14 as cut along line Y-Y in figure 14, Figure 18 shows a fifth embodiment of the ship's propulsion unit, Figure 19 shows the ship's propulsion unit shown in figure 18 as cut along line X-X in figure 18, Figure 20 shows the ship's propulsion unit shown in figure 18 as cut along line Y-Y in figure 18, Figure 21 shows a sixth embodiment of the ship's propulsion unit, Figure 22 shows the sixth embodiment shown in figure 21 in a state where the first detachable section and the second detachable section have been detached, Figure 23 shows the first detachable section of the sixth embodiment shown in figure 21, and Figure 24 shows the second detachable section of the sixth embodiment shown in figure 21.
Detailed description of the invention Figures 1 to 3 shows a ship's propulsion unit according to the prior art.
Figures 4 to 20 shows examples of embodiments of the ship's propulsion units (hereinafter "propulsion unit").
The ship's propulsion unit may be a ship's azimuthing propulsion unit that is attached to the hull 2 of the ship by means of a turning arrangement (not shown in the drawings) for turing the propulsion unit with respect to the hull 2 of the ship.
The propulsion unit comprises a shell structure 1 arranged below a hull 2 of the ship (not marked with a reference numeral) and immersible at least partly in water so that the shell structure 1 is at least partly surrounded by water The propulsion unit comprises an electric motor 3 for rotating a propeller axis 4. The propeller axis 4 extends to the outside of the shell structure 1. A propeller 5 is mounted on the propeller axis 4 outside the shell structure 1.
The propulsion unit has a vertical longitudinal central plane A.
The electric motor 3 has a stator 6 and a rotor 7 for rotating in the stator 6. The electric motor 3 is arranged in a motor housing section 8 of the shell structure 1 so that the stator 6 of the electric motor 3 is form-fitted into a cylindrical section 9 of the motor housing section 8 of the shell structure 1. The cylindrical section 9 has a cylindrical outer surface 10.
The shell structure 1 includes a support section 11 having an lower end (not marked with a reference numeral) directly connected to the motor housing section 8 of the shell structure 1 and an upper end (not marked with a reference numeral) connected to the hull 2 of the ship.
The propulsion unit comprises at least one supporting metal sheet 12 arranged between
Detailed description of the invention Figures 1 to 3 shows a ship's propulsion unit according to the prior art.
Figures 4 to 20 shows examples of embodiments of the ship's propulsion units (hereinafter "propulsion unit").
The ship's propulsion unit may be a ship's azimuthing propulsion unit that is attached to the hull 2 of the ship by means of a turning arrangement (not shown in the drawings) for turing the propulsion unit with respect to the hull 2 of the ship.
The propulsion unit comprises a shell structure 1 arranged below a hull 2 of the ship (not marked with a reference numeral) and immersible at least partly in water so that the shell structure 1 is at least partly surrounded by water The propulsion unit comprises an electric motor 3 for rotating a propeller axis 4. The propeller axis 4 extends to the outside of the shell structure 1. A propeller 5 is mounted on the propeller axis 4 outside the shell structure 1.
The propulsion unit has a vertical longitudinal central plane A.
The electric motor 3 has a stator 6 and a rotor 7 for rotating in the stator 6. The electric motor 3 is arranged in a motor housing section 8 of the shell structure 1 so that the stator 6 of the electric motor 3 is form-fitted into a cylindrical section 9 of the motor housing section 8 of the shell structure 1. The cylindrical section 9 has a cylindrical outer surface 10.
The shell structure 1 includes a support section 11 having an lower end (not marked with a reference numeral) directly connected to the motor housing section 8 of the shell structure 1 and an upper end (not marked with a reference numeral) connected to the hull 2 of the ship.
The propulsion unit comprises at least one supporting metal sheet 12 arranged between
4 the support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 for providing additional support for the motor housing section 8 of the shell structure 1 at the shell structure 1 of the support section 11.
Said at least one supporting metal sheet 12 has a first side surface 13 and a second side surface 14. Said at least one supporting metal sheet 12 is fastened to the support section 11 of the shell structure 1 and fastened to the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Water surrounding the shell structure 1 is in contact with both the first side surface 12 and the second side surface 14 of said at least one supporting metal sheet 12.
Said at least one supporting metal sheet 12 has preferably, but not necessarily, a thickness between about 10 and about 40 mm, preferably between about 15 and about 25 mm, more preferably about 20 mm.
In the embodiments of the propulsion unit shown in figures 4 to 20 the motor housing section 8 of the shell structure 1 has a first end 15 from which the propeller axis 4 extends to the outside of the shell structure 1 and a second end 16 at the opposite end of the motor housing section 8 of the shell structure 1. In the embodiments of the propulsion unit shown in figures 4 to the lower end of the support section 11 of the shell structure 1 is directly connected to the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the 20 shell structure 1 by means of a first connection section 17 of the support section 11 of the shell structure 1 at a region of the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 that is closer to the second end 16 of the motor housing section 8 of the shell structure 1 than to the first end 15 of the motor housing section 8 of the shell structure 1. In the embodiments of the propulsion unit shown in figures 4 to 20 the support section 11 of the shell structure 1 having a lower surface 18 that is located at a distance from the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 and that faces the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 so that a space 19 is formed between the lower surface 18 of support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1.
In the embodiments of the propulsion unit shown in figures 4 to 20, the part of the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 that is located in the space 19 is in direct contact with water surrounding the shell structure 1.
The lower end of the support section 11 of the shell structure 1 may additionally to by means of a first connection section 17 be directly connected to cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 by means of a second connection section 20 of the support section 11 of the shell structure 1 at a region of the motor housing section 8 of the shell structure 1 that is closer to the first end 15 of the motor housing section 8 of the shell structure 1 than to the second end 16 of the motor housing section 8 of the shell structure 1. In such embodiments said space 19 is formed between the first connection section 17 of the support section 11 of the shell structure 1 and the second connection section 20 of the support section 11 of the shell structure 1. Such embodiments of the propulsion unit are
Said at least one supporting metal sheet 12 has a first side surface 13 and a second side surface 14. Said at least one supporting metal sheet 12 is fastened to the support section 11 of the shell structure 1 and fastened to the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Water surrounding the shell structure 1 is in contact with both the first side surface 12 and the second side surface 14 of said at least one supporting metal sheet 12.
Said at least one supporting metal sheet 12 has preferably, but not necessarily, a thickness between about 10 and about 40 mm, preferably between about 15 and about 25 mm, more preferably about 20 mm.
In the embodiments of the propulsion unit shown in figures 4 to 20 the motor housing section 8 of the shell structure 1 has a first end 15 from which the propeller axis 4 extends to the outside of the shell structure 1 and a second end 16 at the opposite end of the motor housing section 8 of the shell structure 1. In the embodiments of the propulsion unit shown in figures 4 to the lower end of the support section 11 of the shell structure 1 is directly connected to the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the 20 shell structure 1 by means of a first connection section 17 of the support section 11 of the shell structure 1 at a region of the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 that is closer to the second end 16 of the motor housing section 8 of the shell structure 1 than to the first end 15 of the motor housing section 8 of the shell structure 1. In the embodiments of the propulsion unit shown in figures 4 to 20 the support section 11 of the shell structure 1 having a lower surface 18 that is located at a distance from the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 and that faces the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 so that a space 19 is formed between the lower surface 18 of support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1.
In the embodiments of the propulsion unit shown in figures 4 to 20, the part of the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 that is located in the space 19 is in direct contact with water surrounding the shell structure 1.
The lower end of the support section 11 of the shell structure 1 may additionally to by means of a first connection section 17 be directly connected to cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 by means of a second connection section 20 of the support section 11 of the shell structure 1 at a region of the motor housing section 8 of the shell structure 1 that is closer to the first end 15 of the motor housing section 8 of the shell structure 1 than to the second end 16 of the motor housing section 8 of the shell structure 1. In such embodiments said space 19 is formed between the first connection section 17 of the support section 11 of the shell structure 1 and the second connection section 20 of the support section 11 of the shell structure 1. Such embodiments of the propulsion unit are
5 shown in figures 4 to 13.
In the propulsion unit comprises a space 19 between the lower surface 18 of support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1, the propulsion unit may, as shown in the alternative configuration of the second embodiment shown in figure 10, in the third embodiment to shown in figures 11 to 13, and in the fourth embodiment shown in figures 14 to 17, comprise at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close said space 19 so that water surrounding the shell structure 1 can enter the space 19 between and so that water can exit the space 19 between. Said at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close said space 19 may form a vertical extension of the support structure, which vertical extension extends between the support structure of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Said at least one supporting metal sheet 12 may be arranged to partly close said space 19 so that a forward opening 22 forming an inlet and/or an outlet for water is formed and so that a rear opening 23 forming an outlet and/or an inlet for water is formed. Supporting metal sheet 12 forming closing structure 21s arranged to partly close said space 19 between may be arranged symmetrically at both sides of the space 19 with respect to the vertical longitudinal central plane A of the propulsion unit.
The propulsion unit may, as in the alternative configuration of the second embodiment shown in figure 10 and in the third embodiment shown in figures 11 to 13, the propulsion unit comprise at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close a space 19 between the first connection section 17 and the second connection section 20 so that water surrounding the shell structure 1 can enter the space 19 between the first connection section 17 and the second connection section 20 and so that water can exit the space 19 between the first connection section 17 and the second connection section 20. In such embodiments said at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close said space 19 between the first connection section 17 and the second connection section 20 may form a vertical extension of the support structure, which vertical extension extends between the support structure of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Said at least one supporting metal sheet 12 arranged to partly close said space 19 between the first connection section 17 and the second connection section 20 may be arranged so that a forward opening 22 forming an inlet and/or an outlet for water is formed between the first connection section 17 and said at least one supporting metal sheet 12, and so that a rear opening 23 forming an outlet and/or an inlet for
In the propulsion unit comprises a space 19 between the lower surface 18 of support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1, the propulsion unit may, as shown in the alternative configuration of the second embodiment shown in figure 10, in the third embodiment to shown in figures 11 to 13, and in the fourth embodiment shown in figures 14 to 17, comprise at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close said space 19 so that water surrounding the shell structure 1 can enter the space 19 between and so that water can exit the space 19 between. Said at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close said space 19 may form a vertical extension of the support structure, which vertical extension extends between the support structure of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Said at least one supporting metal sheet 12 may be arranged to partly close said space 19 so that a forward opening 22 forming an inlet and/or an outlet for water is formed and so that a rear opening 23 forming an outlet and/or an inlet for water is formed. Supporting metal sheet 12 forming closing structure 21s arranged to partly close said space 19 between may be arranged symmetrically at both sides of the space 19 with respect to the vertical longitudinal central plane A of the propulsion unit.
The propulsion unit may, as in the alternative configuration of the second embodiment shown in figure 10 and in the third embodiment shown in figures 11 to 13, the propulsion unit comprise at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close a space 19 between the first connection section 17 and the second connection section 20 so that water surrounding the shell structure 1 can enter the space 19 between the first connection section 17 and the second connection section 20 and so that water can exit the space 19 between the first connection section 17 and the second connection section 20. In such embodiments said at least one supporting metal sheet 12 forming a closing structure 21 arranged to partly close said space 19 between the first connection section 17 and the second connection section 20 may form a vertical extension of the support structure, which vertical extension extends between the support structure of the shell structure 1 and the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Said at least one supporting metal sheet 12 arranged to partly close said space 19 between the first connection section 17 and the second connection section 20 may be arranged so that a forward opening 22 forming an inlet and/or an outlet for water is formed between the first connection section 17 and said at least one supporting metal sheet 12, and so that a rear opening 23 forming an outlet and/or an inlet for
6 water is formed between the second connection section 20 and said at least one additional support. Supporting metal sheet 12 forming closing structures 21 arranged to partly close said space 19 between the first connection section 17 and the second connection section 20 are preferably, but not necessarily, arranged symmetrically at both sides of the space 19 with respect to the vertical longitudinal central plane A of the propulsion unit.
The supporting metal sheet 12 of the support section 11 of the shell structure 1 may, as in the fifth embodiment shown in figures 18 to 20, comprise at least one opening 24 for allowing water surrounding the shells structure to flow through supporting metal sheet 12 of the support section 11 of the shell structure 1.
The propulsion unit comprises preferably, but not necessarily, a plurality of supporting metal sheets 12 each being arranged being fastened to the support section 11 of the shell structure 1 and fastened to the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Some of said plurality of supporting metal sheets 12 may extend vertically at the vertical longitudinal central plane A of the propulsion unit. Some supporting metal sheets 12 of said plurality of supporting metal sheets 12 may extend vertically at the vertical longitudinal central plane A of the propulsion unit, and some supporting metal sheets 12 of said plurality of supporting metal sheets 12 may extend vertically and transversely with respect to the vertical longitudinal central plane A of the propulsion unit. Said plurality of supporting metal sheets 12 may be arranged symmetrically with respect to the vertical longitudinal central plane A of the propulsion unit.
In the propulsion unit the electric motor 3 may be a permanent-magnet electric motor.
In the propulsion unit the cylindrical section 9 of the motor housing section 8 of the shell structure 1 is preferably, but not necessarily, of a single-layer form.
In the propulsion unit said at least one supporting metal sheet 12 is preferably, but not necessarily, of a single-layer form. In the propulsion unit all supporting metal sheets 12 are preferably, but not necessarily, of a single-layer form.
In the propulsion unit the motor housing section 8 includes preferably, but not necessarily, as shown in figures 21 to 24, a first detachable section 25 at the first end 15 of the motor housing section 8 of the shell structure 1. Such first detachable section 25 of the motor housing section 8 houses a bearing arrangement 27 for the propeller axis 4.
Such first detachable section 25 of the motor housing section 8 is unattached to the support section 11 of the shell structure 1. A purpose of such first detachable section 25 is to facilitate service or replacing of the bearing arrangement 27 without having to detach the whole propulsion unit arrangement from the hull 2 of the ship or without having to detach the motor housing section 8 from the support section 11. Because of said at least one supporting metal sheet 12 between the support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the motor housing section 8 of the shell structure 1, the motor housing section 8 stays attached in a secure manner at the support section 11 when such first detachable section 25 is detached.
The supporting metal sheet 12 of the support section 11 of the shell structure 1 may, as in the fifth embodiment shown in figures 18 to 20, comprise at least one opening 24 for allowing water surrounding the shells structure to flow through supporting metal sheet 12 of the support section 11 of the shell structure 1.
The propulsion unit comprises preferably, but not necessarily, a plurality of supporting metal sheets 12 each being arranged being fastened to the support section 11 of the shell structure 1 and fastened to the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1. Some of said plurality of supporting metal sheets 12 may extend vertically at the vertical longitudinal central plane A of the propulsion unit. Some supporting metal sheets 12 of said plurality of supporting metal sheets 12 may extend vertically at the vertical longitudinal central plane A of the propulsion unit, and some supporting metal sheets 12 of said plurality of supporting metal sheets 12 may extend vertically and transversely with respect to the vertical longitudinal central plane A of the propulsion unit. Said plurality of supporting metal sheets 12 may be arranged symmetrically with respect to the vertical longitudinal central plane A of the propulsion unit.
In the propulsion unit the electric motor 3 may be a permanent-magnet electric motor.
In the propulsion unit the cylindrical section 9 of the motor housing section 8 of the shell structure 1 is preferably, but not necessarily, of a single-layer form.
In the propulsion unit said at least one supporting metal sheet 12 is preferably, but not necessarily, of a single-layer form. In the propulsion unit all supporting metal sheets 12 are preferably, but not necessarily, of a single-layer form.
In the propulsion unit the motor housing section 8 includes preferably, but not necessarily, as shown in figures 21 to 24, a first detachable section 25 at the first end 15 of the motor housing section 8 of the shell structure 1. Such first detachable section 25 of the motor housing section 8 houses a bearing arrangement 27 for the propeller axis 4.
Such first detachable section 25 of the motor housing section 8 is unattached to the support section 11 of the shell structure 1. A purpose of such first detachable section 25 is to facilitate service or replacing of the bearing arrangement 27 without having to detach the whole propulsion unit arrangement from the hull 2 of the ship or without having to detach the motor housing section 8 from the support section 11. Because of said at least one supporting metal sheet 12 between the support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the motor housing section 8 of the shell structure 1, the motor housing section 8 stays attached in a secure manner at the support section 11 when such first detachable section 25 is detached.
7 In the propulsion unit the motor housing section 8 includes preferably, but not necessarily, as shown in figures 21 to 24, a second detachable section 26 at the second end 16 of the motor housing section 8 of the shell structure 1. Such second detachable section 26 of the motor housing section 8 houses a bearing arrangement 27 for the propeller axis 4. Such second detachable section 26 of the motor housing section 8 is unattached to the support section 11 of the shell structure 1. A purpose of such second detachable section 26 is to facilitate service or replacing of the bearing arrangement 27 without having to detach the whole propulsion unit arrangement from the hull 2 of the ship or without having to detach the motor housing section 8 from the support section 11. Because of said at least one supporting metal sheet 12 between the support section 11 of the shell structure 1 and the cylindrical outer surface 10 of the motor housing section 8 of the shell structure 1, the motor housing section 8 stays attached in a secure manner at the support section 11 when such second detachable section 26 is detached.
In the propulsion unit the lower end of the support section 11 is preferably, but not necessarily, directly connected to the motor housing section 8 of the shell structure 1 so that the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 partly forms the outermost surface of the propulsion unit.
It is apparent to a person skilled in the art that as technology advanced, the basic idea of the invention can be implemented in various ways. The invention and its embodiments are therefore not restricted to the above examples, but they may vary within the scope of the claims.
In the propulsion unit the lower end of the support section 11 is preferably, but not necessarily, directly connected to the motor housing section 8 of the shell structure 1 so that the cylindrical outer surface 10 of the cylindrical section 9 of the motor housing section 8 of the shell structure 1 partly forms the outermost surface of the propulsion unit.
It is apparent to a person skilled in the art that as technology advanced, the basic idea of the invention can be implemented in various ways. The invention and its embodiments are therefore not restricted to the above examples, but they may vary within the scope of the claims.
8 List of reference numerals 1. Shell structure 2. Hull 3. Electric motor 4. Propeller axis 5. Propeller 6. Stator 7. Rotor 8. Motor housing section
9. Cylindrical section
10. Cylindrical outer surface
11. Support section
12. Supporting metal sheet
13. First side surface
14. Second side surface
15. First end
16. Second end
17. First connection section
18. Lower surface
19. Space
20. Second connection section
21. Closing structure
22. Forward opening
23. Rear opening
24. Opening
25. First detachable section
26. Second detachable section
27. Bearing arrangement
Claims (18)
1. A ship's propulsion unit, the propulsion unit comprising:
a shell structure arranged below a hull of the ship and immersible at least partly in water so that the shell structure is at least partly surrounded by water;
an electric motor for rotating a propeller axis, wherein the propeller axis extends to the outside of the shell structure; and a propeller mounted on the propeller axis outside the shell structure, wherein the propulsion unit has a vertical longitudinal central plane, wherein the electric motor has a stator and a rotor for rotating in the stator, wherein the electric motor is arranged in a motor housing section of the shell structure so that the stator of the electric motor is form-fitted into a cylindrical section of the motor housing section of the shell structure, wherein the cylindrical section has a cylindrical outer surface, wherein the shell structure includes a support section having an lower end directly connected to the motor housing section of the shell structure and an upper end connected to the hull of the ship, and wherein the motor housing section of the shell structure has a first end from which the propeller axis extends to the outside of the shell structure and a second end at the opposite end of the motor housing section of the shell structure, wherein the propulsion unit further comprises at least one supporting metal sheet arranged between the support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure for providing additional support for the motor housing section of the shell structure at the shell structure of the support section, wherein said at least one supporting metal sheet has a first side surface and a second side surface, wherein said at least one supporting metal sheet is fastened to the support section of the shell structure and fastened to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and wherein water surrounding the shell structure is in contact with both the first side surface and the second side surface of said at least one supporting metal sheet.
a shell structure arranged below a hull of the ship and immersible at least partly in water so that the shell structure is at least partly surrounded by water;
an electric motor for rotating a propeller axis, wherein the propeller axis extends to the outside of the shell structure; and a propeller mounted on the propeller axis outside the shell structure, wherein the propulsion unit has a vertical longitudinal central plane, wherein the electric motor has a stator and a rotor for rotating in the stator, wherein the electric motor is arranged in a motor housing section of the shell structure so that the stator of the electric motor is form-fitted into a cylindrical section of the motor housing section of the shell structure, wherein the cylindrical section has a cylindrical outer surface, wherein the shell structure includes a support section having an lower end directly connected to the motor housing section of the shell structure and an upper end connected to the hull of the ship, and wherein the motor housing section of the shell structure has a first end from which the propeller axis extends to the outside of the shell structure and a second end at the opposite end of the motor housing section of the shell structure, wherein the propulsion unit further comprises at least one supporting metal sheet arranged between the support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure for providing additional support for the motor housing section of the shell structure at the shell structure of the support section, wherein said at least one supporting metal sheet has a first side surface and a second side surface, wherein said at least one supporting metal sheet is fastened to the support section of the shell structure and fastened to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and wherein water surrounding the shell structure is in contact with both the first side surface and the second side surface of said at least one supporting metal sheet.
2. The propulsion unit according to claim 1, wherein the ship's propulsion unit is a ship's azimuthing propulsion unit.
3. The propulsion unit according to claim 1, wherein the lower end of the support section of the shell structure is directly connected to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure by means of a first connection section of the support section of the shell structure at a region of the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure that is closer to the second end of the motor housing section of the shell structure than to the first end of the motor housing section of the shell structure, wherein the support section of the shell structure has a lower surface that is located at a distance from the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure and that faces the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure so that a space is formed between the lower surface of the support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure, and wherein the part of the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure that is located in the space is in direct contact with water surrounding the shell structure.
4. The propulsion unit according to claim 3, wherein the lower end of the support section of the shell structure is additionally directly connected to cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure by means of a second connection section of the support section of the shell structure at a region of the motor housing section of the shell structure that is closer to the first end of the motor housing section of the shell structure than to the second end of the motor housing section of the shell structure, and wherein said space is formed between the first connection section of the support section of the shell structure and the second connection section of the support section of the shell structure.
5. The propulsion unit according to claim 3 or 4, wherein said at least one supporting metal sheet forms a closing structure arranged to partly close said space so that water surrounding the shell structure can enter the space between and so that the water can exit the space between.
6. The propulsion unit according to claim 5, wherein said closing structure forms a vertical extension of the support structure, said vertical extension extending between the support section of the shell structure and the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure.
7. The propulsion unit according to claim 5 or 6, wherein said at least one supporting metal sheet is arranged to partly close said space so that a forward opening forming at least one of an inlet and an outlet for water is formed and so that a rear opening forming at least one of another outlet and another inlet for water is formed.
8. The propulsion unit according to any one of claims 5 to 7, wherein said closing structure is arranged symmetrically at both sides of said space with respect to the vertical longitudinal central plane of the propulsion unit.
9. The propulsion unit according to any one of claims 1 to 8, wherein the at least one supporting metal sheet comprises a plurality of supporting metal sheets, each being arranged and fastened to the support section of the shell structure and to the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure.
10. The propulsion unit according to claim 9, wherein some of said plurality of supporting metal sheets extend vertically at the vertical longitudinal central plane of the propulsion unit.
11. The propulsion unit according to claim 9 or 10, wherein some supporting metal sheets of said plurality of supporting metal sheets extend vertically at the vertical longitudinal central plane of the propulsion unit, and some supporting metal sheets of said plurality of supporting metal sheets extend vertically and transversely with respect to the vertical longitudinal central plane of the propulsion unit.
12. The propulsion unit according to any one of claims 9 to 11, wherein said plurality of supporting metal sheet are arranged symmetrically with respect to the vertical longitudinal central plane of the propulsion unit.
13. The propulsion unit according to any one of claims 1 to 12, wherein the electric motor is a permanent-magnet electric motor.
14. The propulsion unit according to any one of claims 1 to 13, wherein the cylindrical section of the motor housing section of the shell structure is of a single-layer form.
15. The propulsion unit according to any one of claims 1 to 14, wherein said at least one supporting metal sheet is of a single-layer form.
16. The propulsion unit according to any one of claims 1 to 15, wherein the motor housing section includes a first detachable section at the first end of the motor housing section of the shell structure, the first detachable section of the motor housing section houses a second bearing arrangement for the propeller axis, and the first detachable section of the motor housing section is unattached to the support section of the shell structure.
17. The propulsion unit according to claim 16, wherein the motor housing section includes a second detachable section at the second end of the motor housing section of the shell structure, the second detachable section of the motor housing section houses a second bearing arrangement for the propeller axis, and the second detachable section of the motor housing section is unattached to the support section of the shell structure.
18. The propulsion unit according to any one of claims I to 17, wherein the lower end of the support section is directly connected to the motor housing section of the shell structure so that the cylindrical outer surface of the cylindrical section of the motor housing section of the shell structure partly forms an outermost surface of the propulsion unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13175690.0 | 2013-07-09 | ||
| EP13175690.0A EP2824028B2 (en) | 2013-07-09 | 2013-07-09 | Ship's propulsion unit |
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| CA2856020A1 CA2856020A1 (en) | 2015-01-09 |
| CA2856020C true CA2856020C (en) | 2016-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2856020A Active CA2856020C (en) | 2013-07-09 | 2014-07-08 | Ship's propulsion unit |
Country Status (10)
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|---|---|
| US (1) | US9663210B2 (en) |
| EP (1) | EP2824028B2 (en) |
| JP (1) | JP6584755B2 (en) |
| KR (1) | KR101707951B1 (en) |
| CN (1) | CN104276268B (en) |
| AU (1) | AU2014203537A1 (en) |
| BR (1) | BR102014016699B8 (en) |
| CA (1) | CA2856020C (en) |
| RU (1) | RU2565630C1 (en) |
| SG (1) | SG10201403081VA (en) |
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| CN105460194A (en) * | 2015-12-31 | 2016-04-06 | 武汉船用机械有限责任公司 | Pod propulsion device for ship |
| CN105775085B (en) * | 2016-03-09 | 2017-09-19 | 武汉船用机械有限责任公司 | A kind of pod propulsion equipment peculiar to vessel |
| ES2709984T3 (en) * | 2016-04-25 | 2019-04-22 | Aetc Sapphire | Watercraft propulsion unit comprising a mobile crankcase and a hydraulic fluid conditioning module |
| CN109292067A (en) * | 2017-07-24 | 2019-02-01 | 西门子公司 | Hanger structures for marine propulsion and marine propulsion |
| DE102018216691A1 (en) | 2018-09-28 | 2020-04-02 | Siemens Aktiengesellschaft | Propulsion device for a ship and method for operating such a ship |
| DE102018222495A1 (en) | 2018-12-20 | 2020-06-25 | Siemens Aktiengesellschaft | Propulsion device for a ship |
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| CA2856020A1 (en) | 2015-01-09 |
| KR20150006788A (en) | 2015-01-19 |
| EP2824028A1 (en) | 2015-01-14 |
| JP2015016858A (en) | 2015-01-29 |
| BR102014016699A2 (en) | 2015-10-06 |
| SG10201403081VA (en) | 2015-02-27 |
| CN104276268A (en) | 2015-01-14 |
| RU2565630C1 (en) | 2015-10-20 |
| EP2824028B1 (en) | 2016-04-20 |
| KR101707951B1 (en) | 2017-02-17 |
| CN104276268B (en) | 2017-06-09 |
| BR102014016699B1 (en) | 2022-04-26 |
| JP6584755B2 (en) | 2019-10-02 |
| EP2824028B2 (en) | 2021-10-27 |
| AU2014203537A1 (en) | 2015-01-29 |
| US20150015105A1 (en) | 2015-01-15 |
| US9663210B2 (en) | 2017-05-30 |
| BR102014016699B8 (en) | 2022-07-12 |
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