DE102007003779A1 - Drive for servo rotor, has cylindrical rotor which is hinged aroung perpendicular rotor mast arranged on ship deck, where asynchronous linear induction motor, effective between rotor and rotor mast is arranged in area of lower bearing - Google Patents

Abstract

The drive has a cylindrical rotor (1) which is hinged aroung a perpendicular rotor mast (3) arranged on a ship deck (2). An asynchronous linear induction motor, effective between the rotor and the rotor mast, is arranged in the area of the lower bearing (4), such that a radially running reaction rail which is effective as secondary part is connected firmly with the rotor cover at the inner side of the rotor.

Description

The Invention relates to a device for utilizing wind power, supported by the conventional marine propulsion becomes. It refers in particular to Flettner rotors.

When additional propulsion means for ships in exploitation of wind power in addition to conventional sail equipment the use of Flettner rotors as an alternative of increasing importance.

Of the Flettnerrotor is made from a vertically on the deck of a ship rotatably arranged cylinder formed. The cylinder will be rotated on the surface of the cylinder, caused by the so-called "Magnus effect", Generated air currents, which, when used as a wind additional drive, support the propulsion of the ship.

The The invention relates to the drive of the rotor to him in a Rotation that triggers the "Magnus effect".

According to the known prior art, the rotor by conventional Medium powered. The drive is known by means of an electric motor, by suitable transmission elements, such as gears, Shafts and couplings are connected to the rotor.

Out DD 255 923 A1 is known a wind addition drive for ships, which presents itself as a form of Flettnerrotors. The rotation of the hollow cylinder is effected by a gear transmission, which is acted upon by an electric motor.

Of the Disadvantage of this type of drive is that due to the mechanical Power transmission the individual components a permanent Subject to wear and a considerable maintenance and Maintenance effort is required to work poorly to ensure the additional wind drive. Further, with the described transmission type associated deficiencies are energy losses caused by appropriately extended sizing of the Wind additional drive must be compensated.

An identical or similar mechanical Kraftübertragungsart is z. In JP 60124591 A or in GB 2 332 891 A described. They also show the deficiencies already mentioned.

task The invention is to provide a low-wear and energy-efficient To provide rotary drive for Flettner rotors. According to the invention the problem solved by the features of claim 1.

Of the Flettnerrotor consists of a cylindrical rotor, which is around a rotatably driven vertically arranged on the ship's deck rotor mast is stored. The bearing is made of a lower, both the axial as well as the radial forces receiving bearing and a upper, the radial forces receiving bearing formed.

Of the Drive, which causes a rotation of the rotor about the rotor mast, consists of an asynchronous linear motor, which is in the range of the lower Bearing between the rotor and the rotor mast acts. The asynchronous linear motor consists of a radially encircling on the inside of the rotor, acting as a secondary reaction bar, with the Rotor jacket is firmly connected. The reaction bar stands with a firmly connected to the rotor mast, acting as a primary part Stator in operative connection.

The Invention will be described below with reference to an embodiment described in more detail. The accompanying drawing shows in

1 a schematic representation of the rotor in the side view;

2 a cross section through the rotor according to 1 in the range of the drive according to the invention;

3 a detail of the drive according to the invention.

The The invention relates to a Flettnerrotor, the use of wind power serves and with the conventional ship propulsion is supported.

When additional propulsion means for ships in exploitation of wind power in addition to conventional sail equipment the use of Flettner rotors as an alternative of increasing importance.

Of the Flettnerrotor is made from a vertically on the deck of a ship rotatably mounted rotor formed. The rotor turns around his vertical axis, are caused on the surface of the rotor through the so-called "Magnus effect", air currents which, when used as a wind additional drive, the propulsion of the Support ship.

The Flettner rotor consists of a cylindrical rotor 1 which is one perpendicular to the ship's deck 2 arranged rotor mast 3 is mounted rotatably driven. The storage of the rotor 1 on the rotor mast 3 via conventional bearings. It consists of a lower bearing 4 that absorbs both the axial and the radial forces acting on it the rotor 1 act, absorb.

One in the upper area of the rotor mast 3 arranged upper bearing 5 absorbs the radial forces acting on the rotor 1 Act on.

To form the so-called "Magnus effect" as a prerequisite for the propulsion of the ship resulting from the wind power, it is necessary, the rotor 1 in a rotation about its axis, through the rotor mast 3 is embodied to displace. This is ensured by the drive according to the invention.

The drive according to the invention is formed from an asynchronous linear motor, which is in the region of the lower bearing 4 in a plane transverse to the axis of rotation between the rotor 1 and the rotor mast 3 acts. The asynchronous linear motor consists of the inside of the rotor 1 radially rotating, acting as a secondary reaction bar 6 that with the rotor shell 7 is welded.

The reaction rail 6 stands with the with the rotor mast 3 firmly connected, acting as a primary stator 8th in active connection.

The stator 8th consists of four cross-shaped webs 9 that with the rotor mast 3 directed end with the rotor mast 3 are welded. The radially outward free end is as a fork 10 designed so that the fork 10 the reaction rail 6 embraces.

In the fork 10 are the stator packages 11 in opposition to the reaction rail 6 arranged and between the stator packs 11 on the one hand and the reaction rail 6 On the other hand, there is a constant small air gap 12 intended.

By activation of the magnetic field in the stationary stator packs 11 will be between the stator packs 11 located reaction rail 6 moved radially, causing a rotation of the rotor 1 leads.

Of the Advantage of using an asynchronous linear motor for the described application is in particular in a non-contact and thus low-wear power transmission.

The arrangement of the asynchronous linear motor in close proximity to the lower bearing 4 ensures that the air gap 12 between the primary and the secondary part is as low and constant as possible. The number of stator packages 11 depends on the required performance and design requirements.

approach or speed changes are made by regulation the frequency and / or the voltage or else caused by pole change. Braking is by over-synchronism or Counterflow braking possible.

An inventively advantageous embodiment of the rotor 1 and the one with the rotor 1 welded reaction rail 6 is that both components are made of the same material, preferably the lightweight composite AFS (aluminum foam sandwich) is used.

1

Rotor,

2

Deck,

3

Rotor mast,

4

lower Camp,

5

upper Camp,

6

Reaction rail,

7

Rotor casing,

8th

Stator,

9

Web,

10

Fork,

11

stator,

12

Air gap,

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DD 255923 A1 [0006]
• - JP 60124591 A [0008]
• GB 2332891 A [0008]

Claims (5)

Drive for Flettner rotor, wherein the cylindrical rotor ( 1 ) to one vertically on the ship deck ( 2 ) arranged rotor mast ( 3 ) is rotatably mounted and the bearing of a lower, both the axial and the radial forces receiving bearing ( 4 ) and an upper, the radial forces receiving bearing ( 5 ) is formed and a drive is provided, which is a rotation of the rotor ( 1 ) around the rotor mast ( 3 ), characterized in that in the region of the lower bearing ( 4 ) between the rotor ( 1 ) and the rotor mast ( 3 ) acting asynchronous linear motor is arranged such that on the inside of the rotor ( 1 ) a radially encircling, acting as a secondary part reaction rail ( 6 ) with the rotor shell ( 7 ) and the reaction rail ( 6 ) with one with the rotor mast ( 3 ) firmly connected, acting as a primary part stator ( 8th ) is in operative connection. Drive according to claim 1, characterized in that the stator ( 8th ) of four cross-shaped webs ( 9 ) formed with the rotor mast ( 3 ) directed ends with the rotor mast ( 3 ) are fixedly connected and the radially outwardly directed free end as a fork ( 10 ) is formed such that the fork ( 10 ) the reaction rail ( 6 ), wherein in the fork ( 10 ) Stator packages ( 11 ) in juxtaposition to the reaction rail ( 6 ) and between the stator packs ( 11 ) on the one hand and the reaction rail ( 6 ) On the other hand, a constant small air gap ( 12 ) is provided. Drive according to Claims 1 and 2, characterized in that the number of stator packets ( 11 ) is freely selectable depending on the required power. Drive according to claim 1 and 2, characterized in that both the rotor ( 1 ) as well as the reaction rail ( 6 ) made of the same material, preferably made of aluminum. Drive according to claim 4, characterized in that both the rotor ( 1 ) as well as the reaction rail ( 6 ) made of lightweight composite material, preferably made of AFS (aluminum foam sandwich).