NL2017018B1 - A motor system for a floating device - Google Patents

A motor system for a floating device Download PDF

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Publication number
NL2017018B1
NL2017018B1 NL2017018A NL2017018A NL2017018B1 NL 2017018 B1 NL2017018 B1 NL 2017018B1 NL 2017018 A NL2017018 A NL 2017018A NL 2017018 A NL2017018 A NL 2017018A NL 2017018 B1 NL2017018 B1 NL 2017018B1
Authority
NL
Netherlands
Prior art keywords
electric motor
support
watertight
motor housing
housing
Prior art date
Application number
NL2017018A
Other languages
Dutch (nl)
Inventor
Raymond Jan Pereira Jeff
Original Assignee
Creusen Group B V
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Creusen Group B V filed Critical Creusen Group B V
Priority to NL2017018A priority Critical patent/NL2017018B1/en
Application granted granted Critical
Publication of NL2017018B1 publication Critical patent/NL2017018B1/en

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Classifications

    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention relates to a motor system for a floating device, the motor system comprises: - an electric motor with a watertight electric motor housing; - at least one propeller driveable by the electric motor and - at least a support for connecting the watertight electric motor housing to the floating device, wherein the watertight electric motor housing is detachably connectable to the support.

Description

Title: A motor system for a floating device Description
The invention relates to motor system for a floating device, the motor system comprises an electric motor, at least one propeller driveable by the electric motor and at least a support for connecting an electric motor housing to the floating device.
Such a motor system is known from US2011/0318978 A1. This motor system is a pod drive. The electric motor used for the pod drive comprises a rotor, which is coupled to the shaft, a stator and a motor housing, in which the rotor and the stator are arranged. The electric motor has its own housing, which is different from the underwater housing of the pod drive. A drawback of the known construction is that the known pod drive is relative complex by using multiple housings for protecting the electric motor inter alia against water. Further, the electric motor is arranged in a drive module and a gearbox is arranged in a different module. In addition, the underwater housing is welded to a stub.
The object of the present invention is to provide a relative simple and more user friendly motor system for a floating device comprising an electric motor.
This object is achieved by a motor system according to claim 1.
The drive components of the electric motor for driving the propeller of the motor system according to the present invention are located in one watertight electric motor housing. This configuration provides a relatively simple design of the motor system. Further, the watertight electric motor housing is detachably connected to a support such that the electric motor in the watertight electric motor housing can be detached from and attached to a floating device or changed in a user-friendly manner. This also provides the advantage that the electric motor in the watertight electric motor housing can be easily stored for example during wintertime on a different location than the floating device. This different location preferably offers a more secure and/or more preferred environment for the electric motor, such that the electric motor is more difficult to steal and/or the lifetime of the electric motor may be extended. The floating device can be a boat.
The watertight electric motor housing also provides more design freedom for the support. Preferably, the support covers more than 50 % of the outer surface of the watertight electric motor housing for mechanical protection. The design freedom for such a support has increased because its is not required to manufacture a support that is watertight. In fact, it can be beneficial that the support enables (sea)water to pass the support and contact the watertight electric motor housing for cooling the watertight electric motor housing.
The watertight electric motor housing and the support can be clamped to each other for connecting the electric motor inside the watertight electric motor housing to the floating device. It is possible to clamp the watertight electric motor housing at least partly in the support or it is possible to clamp the watertight electric motor housing at least partly around the support. The support itself can be fastened to the floating device in a known manner.
The invention will now be explained in more detail with reference to the drawings by means of a description of exemplary embodiments of a motor system for a floating device, wherein:
Figures 1a,b show a frontal view of an inboard motor system and a cross section of the inboard motor system;
Figure 2 shows a watertight electric motor housing of the inboard motor system shown in figures 1a,b;
Figure 3 shows a support of the inboard motor system shown in figures 1a,b;
Figure 4 shows a cross section of an outboard motor system;
Figures 5 shows the outboard motor system without the electric motor;
Figure 6 shows an exploded view of the outboard motor system shown in figure 5.
In the following description identical or corresponding parts have identical or corresponding reference numerals.
Figures 1a,b, 2 and 3 show an inboard motor system 1 for a floating device (not shown) such as boat. The motor system 1 comprises an electric motor 3 with a watertight electric motor housing 5.
The watertight electric motor housing 5 is tubular. Further, the watertight electric motor housing comprises a first end 7, a middle section 9, and a second end 11. The middle section 9 extends between the first end 7 and the second end 11. The middle section 9 is cylindrical with a substantially constant diameter. The first end 7 is a dome end section with a larger maximum diameter than the diameter of the cylindrical middle section 5. The first end 7 can be formed in one piece with the middle section 9. It is also possible to join the first end part 7 with the middle section 9 or to use threaded parts to connect the first end 7 with the middle section 9. The second end 11 of the watertight electric motor housing is a threaded cap having a larger diameter than the middle section of the watertight electric motor housing, wherein the threaded cap can be detachably connected to a threaded end part 19 of the middle section 9 of the watertight electric motor housing 5 for detachably connecting the watertight electric motor housing to a support.
Figure 3 shows a support 25 without the watertight electric motor housing 5. The support 25 defines a space 35 for the watertight electric motor housing 5. The diameter of the middle section 9 of the watertight electric motor housing 5 is smaller than the inner diameter of the space of the support 25. The diameter of the threaded cap and the maximum diameter of the dome end section are larger than the inner diameter of the support 25. In the longitudinal direction the support 25 covers the middle section 9 without covering the first end 7 formed by the dome end section and the second end 11 formed by the cap. Hence, the length of the middle section 9 corresponds or is identical to the length of a space 35 in the support 25.
By removing the threaded cap from the middle section 9 of the watertight electric motor housing 5 and by inserting the watertight electric motor housing without the cap into the space 35 of the support, the watertight electric motor housing can be moved until an edge 17 of the dome end section abuts against an edge 29 of the support 25. Then, on the opposite side, the threaded cap can be connected to a threaded end part 19 of the middle section 9 of the watertight electric motor housing 5, such that the support 25 can be clamped between the threaded cap and the dome end section. In this way, the watertight electric motor housing 5 can be easily detachable connected to the support 25.
The electric motor 3 is a permanent magnet synchronous motor. The electric motor 3 comprises a shaft 18 extending outwards through the middle section 9 and the dome section 7. A propeller (not shown) can be connected to the outer part of the shaft 18 and the propeller can be driven by the electric motor to move the boat (not shown).
The electric motor 3 further comprises a wiring duct 40 (see figure 1b), an encoder room 41, a coupling 42 with a bearing 43 for bearing a first end of the shaft. Inside a stator 45, a rotor 46 is located on the rotatable shaft 18. The rotor 46 comprises magnets 44 provided around the shaft 18. Further, the dome end section comprises a second bearing 47 and a mechanical seal 48 which are provided around the inner part of the shaft 18.
The support 25 comprises a temperature control system for the electric motor 3. The temperature control system comprises a fluid channel 50 or a number of fluid channels having an inlet 51 and an outlet 52. The fluid channel 50 extends along the outer surface of the watertight electric motor housing 5. The watertight electric motor housing is made of a material of high thermal conductivity, preferably aluminium. By supplying fluid with a relatively low temperature through the inlet, the fluid passing in the fluid channel 50 towards the outlet 52 will cool the watertight electric motor housing. The fluid may cool the watertight electric motor housing by direct contact as shown in Figure 1b, but is also possible to use a closed channel preventing direct contact between the fluid and the watertight electric motor housing 5. The fluid could be (sea)water or fluid from a closed circuit. Further, it is also possible to use a temperature control system having a different configuration.
By using bolts the mounting flanges 38 of the support 25 can be connected to the boat for securing the inboard motor system 1 therein.
Figures 4-6 show an outboard motor system 101 for a floating device (not shown) such as boat. This motor system is a propulsion outdoor system (POD). The motor system 101 comprises an electric motor 103 with a watertight electric motor housing 105. All the components required to drive the shaft 118 are located in the watertight electric motor housing 105. The external part of the shaft comprises or is connectable to a propeller (not shown) for boating a boat on water.
The components of the electric motor 103 are identical to the components of the electric motor 3, with the exception that the electric motor 103 and the watertight electric motor housing 105 of the POD design have a L-shaped wire duct 140 which leaves the watertight electric motor housing 105 on the upper side and that the watertight electric motor housing 105 has a hydro-dynamically designed cover 110. The cover 110 is dome shaped and provides optimal water contact for the watertight electric motor housing 105 in use to cool the electric motor 103.
The cover 110 of the watertight electric motor housing 105 can be configured in a detachable manner, for example the cover 110 can be screwed on the middle section 110 of the watertight electric motor housing 105 like the threaded cap in the inboard watertight electric motor housing 5. The maximum outer diameter of the cover 110 corresponds to the maximum outer diameter of the middle section 109.
It can be an advantage from a cost perspective that the same basis of the watertight electric motor housing 5, 105 can be used in an inboard motor system and in a POD design. In the POD design shown in figures 4-6 only the end cap (the second 11) shown in figures 1a,b-3 of the inboard motor system has to be replaced with the cover 110 and a watertight seal 60 sealing a hole in the middle section 9 of the watertight electric motor housing 5 has to be removed and the L-shaped wire duct 140 has to be attached in the hole in a watertight manner.
In the POD design it is also possible that the cover 110, the middle section 109 and the dome end section 107 of the watertight electric motor housing 105 are formed in one-piece (not shown).
The support 125 comprises two support halves 125a, 125b which can be fastened together by fastening means, for example bolted together by bolts 126. The two support halves 125a, 125b comprise two end rings 128 for securing the watertight electric motor housing 105. By means of the two support halves 125a, 125b the watertight electric motor housing 105 together with the electric motor 103 can be detachably connected to the support 125. More in particular, the watertight electric motor housing 105 is clamped by means of the end rings 128 of the support 125 for connecting the electric motor 103 to the boat. The support 125 comprises a space 135 for housing the complete central section 109 of the watertight electric motor housing 105.
The upper side of the support 125 is bolted to an anti ventilation plate (anti cavitation plate) 112 and a turnable rod 114 for steering the boat. The bottom side of the support 125 is bolted to a fin 116.
For the two motor systems 1, 101 the support 25, 125 covers at least the middle section 9, 109 in its longitudinal direction and seen in a cross section the support preferably surrounds the perimeter/circumference of the watertight electric motor housing 5, 105, such that optimal mechanical protection can be provided to the watertight electric motor housing 5, 105.
The motor system 1, 101 preferably uses a single propeller. It is also possible that in the inboard motor system, coupling means are connected/coupled to the external part of shaft 18, wherein by means of the coupling means the propeller can be (indirectly) coupled to the shaft 18 in a more outwards manner. These coupling means may for example comprise mechanisms to reduce the vibration inboard.

Claims (16)

1. Motorsysteem voor een drijvende inrichting, waarbij het motorsysteem is voorzien van: - een elektrische motor met een waterdichte elektrische motorbehuizing; - ten minste een schroef die aan te drijven is door de elektrische motor en - ten minste een steun voor het verbinden van de waterdichte elektrische motorbehuizing met de drijvende inrichting, waarbij de waterdichte elektrische motorbehuizing losneembaar te verbinden is met de steun.A motor system for a floating device, the motor system comprising: - an electric motor with a watertight electric motor housing; - at least one screw that can be driven by the electric motor and - at least one support for connecting the watertight electric motor housing to the floating device, the watertight electric motor housing being releasably connectable to the support. 2. Motorsysteem volgens conclusie 1, waarbij de waterdichte elektrische motorbehuizing en de steun klembaar zijn aan elkaar voor het verbinden van de elektrische motor aan de drijvende inrichting.The motor system of claim 1, wherein the watertight electric motor housing and the support are clampable to each other for connecting the electric motor to the floating device. 3. Motorsysteem volgens conclusie 1 of 2, waarbij de waterdichte elektrische motorbehuizing in hoofdzaak buisvormig is.The motor system according to claim 1 or 2, wherein the watertight electric motor housing is substantially tubular. 4. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de steun is gelegen rond de waterdichte elektrische motorbehuizing.4. Motor system according to at least one of the preceding claims, wherein the support is situated around the watertight electric motor housing. 5. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de steun is voorzien van een ruimte voor de waterdichte elektrische motorbehuizing.5. Motor system according to at least one of the preceding claims, wherein the support is provided with a space for the watertight electric motor housing. 6. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de steun ten minste een deel van de waterdichte elektrische motorbehuizing in de longitudinale richting daarvan afdekt.6. Motor system according to at least one of the preceding claims, wherein the support covers at least a part of the watertight electric motor housing in the longitudinal direction thereof. 7. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij het motorsysteem een binnenboordmotorsysteem is.An engine system according to at least one of the preceding claims, wherein the engine system is an inboard engine system. 8. Motorsysteem volgens ten minste een der voorgaande conclusies 1 - 6, waarbij het motorsysteem een buitenvoorstuwsysteem is (“propulsion outdoor system” (POD)).Motor system according to at least one of the preceding claims 1 to 6, wherein the motor system is an outside propulsion system (POD). 9. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de steun is voorzien van twee steunhelften die kunnen worden bevestigd aan elkaar voor het definiëren van een ruimte om de waterdichte elektrische behuizing met de steun te verbinden.9. Motor system according to at least one of the preceding claims, wherein the support is provided with two support halves that can be attached to each other for defining a space to connect the watertight electrical housing to the support. 10. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij een eerste uiteinde van de waterdichte elektrische motorbehuizing een grotere diameter heeft dan een middensectie van de waterdichte elektrische motorbehuizing en een tweede uiteinde van de waterdichte elektrische motorbehuizing is een van schroefdraad voorziene kap die een grotere diameter heeft dan de middensectie van de waterdichte elektrische motorbehuizing, waarbij de van schroefdraad voorziene kap losneembaar te verbinden is met een van een schroefdraad voorzien einddeel van de middensectie van de waterdichte elektrische motorbehuizing voor het losneembaar verbinden van de waterdichte elektrische motorbehuizing met de steun.A motor system according to at least one of the preceding claims, wherein a first end of the watertight electric motor housing has a larger diameter than a middle section of the watertight electric motor housing and a second end of the watertight electric motor housing is a threaded cap that has a larger diameter then has the middle section of the watertight electric motor housing, the threaded cap being releasably connectable to a threaded end portion of the middle section of the watertight electric motor housing for releasably connecting the watertight electric motor housing to the support. 11. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de steun is gepositioneerd rondom een middensectie van de waterdichte elektrische motorbehuizing.11. Motor system according to at least one of the preceding claims, wherein the support is positioned around a middle section of the watertight electric motor housing. 12. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de schroef losneembaar kan worden verbonden aan een aandrijfas van de elektrische motor.12. Motor system according to at least one of the preceding claims, wherein the screw can be detachably connected to a drive shaft of the electric motor. 13. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de waterdichte elektrische motorbehuizing en/of de steun hydrodynamisch zijn ontworpen.13. Motor system according to at least one of the preceding claims, wherein the watertight electric motor housing and / or the support are designed hydrodynamically. 14. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de steun is voorzien van een temperatuurregelsysteem.14. Motor system according to at least one of the preceding claims, wherein the support is provided with a temperature control system. 15. Motorsysteem volgens ten minste een der voorgaande conclusies, waarbij de elektrische motor een permanente magneet synchrone motor (PMSM) is.The motor system of at least one of the preceding claims, wherein the electric motor is a permanent magnet synchronous motor (PMSM). 16. Drijvende inrichting omvattende een motorsysteem volgens ten minste een der voorgaande conclusies.A floating device comprising a motor system according to at least one of the preceding claims.
NL2017018A 2016-06-21 2016-06-21 A motor system for a floating device NL2017018B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2017018A NL2017018B1 (en) 2016-06-21 2016-06-21 A motor system for a floating device

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Application Number Priority Date Filing Date Title
NL2017018A NL2017018B1 (en) 2016-06-21 2016-06-21 A motor system for a floating device

Publications (1)

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NL2017018B1 true NL2017018B1 (en) 2018-01-04

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824984A (en) * 1956-05-15 1958-02-25 Garrett H Harris Electric motor housing
USRE29695E (en) * 1975-02-14 1978-07-11 Outboard Marine Corporation Outboard motor with speed regulator for DC permanent magnet motor
US5261842A (en) * 1993-01-26 1993-11-16 Hinkel Jr Carl L Outboard motor retrofit generator apparatus
WO2001054972A1 (en) * 2000-01-28 2001-08-02 Abb Oy Motor unit for a ship
WO2002026558A1 (en) * 2000-09-25 2002-04-04 Abb Oy A ship's propulsion arrangement as well as a method and means related thereto
DE102013209682A1 (en) * 2013-05-24 2014-11-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. HOUSING FOR A PROPELLER DRIVE UNIT
US20150314849A1 (en) * 2014-05-01 2015-11-05 Blue Robotics Inc. Submersible electric thruster

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824984A (en) * 1956-05-15 1958-02-25 Garrett H Harris Electric motor housing
USRE29695E (en) * 1975-02-14 1978-07-11 Outboard Marine Corporation Outboard motor with speed regulator for DC permanent magnet motor
US5261842A (en) * 1993-01-26 1993-11-16 Hinkel Jr Carl L Outboard motor retrofit generator apparatus
WO2001054972A1 (en) * 2000-01-28 2001-08-02 Abb Oy Motor unit for a ship
WO2002026558A1 (en) * 2000-09-25 2002-04-04 Abb Oy A ship's propulsion arrangement as well as a method and means related thereto
DE102013209682A1 (en) * 2013-05-24 2014-11-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. HOUSING FOR A PROPELLER DRIVE UNIT
US20150314849A1 (en) * 2014-05-01 2015-11-05 Blue Robotics Inc. Submersible electric thruster

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Owner name: CREUSEN 2.0 B.V.; NL

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: CREUSEN GROUP B.V.

Effective date: 20200110