EP1806277A1 - Propulsion électrique pour bateaux - Google Patents

Propulsion électrique pour bateaux Download PDF

Info

Publication number
EP1806277A1
EP1806277A1 EP06003966A EP06003966A EP1806277A1 EP 1806277 A1 EP1806277 A1 EP 1806277A1 EP 06003966 A EP06003966 A EP 06003966A EP 06003966 A EP06003966 A EP 06003966A EP 1806277 A1 EP1806277 A1 EP 1806277A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
propeller
blades
boat drive
inclination
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.)
Withdrawn
Application number
EP06003966A
Other languages
German (de)
English (en)
Inventor
Friedrich Dr. Böbel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Torqeedo GmbH
Original Assignee
Torqeedo GmbH
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 Torqeedo GmbH filed Critical Torqeedo GmbH
Publication of EP1806277A1 publication Critical patent/EP1806277A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • 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
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/26—Blades

Definitions

  • the invention relates to a boat drive with an electric motor and a driven by the electric motor propeller with blades. Furthermore, the invention relates to a method for optimizing a boat drive with an electric motor and a driven by the electric motor propeller with blades.
  • the propeller has the greatest impact on the ride and maneuverability of any boat, from all components of a boat propulsion system. Basically, propellers that spin slowly through the water and have a high pitch and a large diameter have the greatest efficiency.
  • marine engines are used in outboard motors for boats.
  • the torque curve of internal combustion engines has low torque at low speeds, so that they are unfavorable for driving large slow-rotating propellers.
  • the efficiencies of applicable for internal combustion engines propeller are therefore limited in low power classes to 20 to 30%.
  • Object of the present invention is therefore to provide an optimized boat drive of the type mentioned, as well as to develop a method for optimizing such a boat drive.
  • This object is achieved by a boat drive with an electric motor and a driven by the electric motor propeller with blades, with the pitch of the blades of the propeller changes in the radial direction.
  • this object is achieved in that the slope, the number, the area, the cross-sectional profile, the axial inclination and / or the radial inclination of the blades are determined in dependence on the characteristics of the electric motor, in particular the torque characteristic of the electric motor.
  • the characteristic of the electric motor is understood in particular to be the dependence of the power and / or the torque of the electric motor on the rotational speed.
  • the propeller is custom-made taking into account these parameters for the electric motor.
  • the type and size of the boat which is to be powered by the electric motor, and / or its application into account.
  • slope refers to the way a propeller would travel without any slippage during one revolution.
  • this idealized size can not be determined on a moving boat, as slip always occurs in practice. Therefore, you measure the pitch of a propeller using the angle of attack of its blades.
  • the invention shows particular advantages in synchronous motors.
  • the torque characteristic of the synchronous motor namely high torque at low speeds, currently supports the use of such propellers with radially varying pitch, which are referred to in the literature as "variable pitch propeller”.
  • the pitch of the propeller is optimized, but also the surfaces of the propeller blades, their number and cross-sectional profile and their axial and radial inclination.
  • propellers with three or five blades have proven to be particularly favorable.
  • synchronous motors with an input power of eg 400 W can already turn propellers with a diameter of 30 cm.
  • propeller diameters between 25 and 40 cm have proven themselves.
  • the invention provides a highly efficient boat drive, which is optimized in terms of efficiency.
  • a high-torque electric motor preferably a synchronous motor
  • a matched to the torque curve and its power range propeller has significant advantages over the conventional boat drives.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP06003966A 2006-01-05 2006-02-27 Propulsion électrique pour bateaux Withdrawn EP1806277A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006001008 2006-01-05

Publications (1)

Publication Number Publication Date
EP1806277A1 true EP1806277A1 (fr) 2007-07-11

Family

ID=36376182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06003966A Withdrawn EP1806277A1 (fr) 2006-01-05 2006-02-27 Propulsion électrique pour bateaux

Country Status (2)

Country Link
EP (1) EP1806277A1 (fr)
DE (1) DE202006020388U1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934348A1 (de) * 1978-08-28 1980-03-20 Lehmann Raoul Schaufelrad, propeller o.dgl. vorrichtung zur erzeugung von axialer wirkung
DE4226637A1 (de) * 1992-08-12 1994-02-17 Schneekluth Herbert Schiffsschraubenpropeller
US5352093A (en) * 1989-07-24 1994-10-04 Hannon R Douglas Weedless propeller
US6231407B1 (en) * 1996-06-26 2001-05-15 Siemens Aktiengesellschaft Ship propulsion with a gondola-like synchronous motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934348A1 (de) * 1978-08-28 1980-03-20 Lehmann Raoul Schaufelrad, propeller o.dgl. vorrichtung zur erzeugung von axialer wirkung
US5352093A (en) * 1989-07-24 1994-10-04 Hannon R Douglas Weedless propeller
DE4226637A1 (de) * 1992-08-12 1994-02-17 Schneekluth Herbert Schiffsschraubenpropeller
US6231407B1 (en) * 1996-06-26 2001-05-15 Siemens Aktiengesellschaft Ship propulsion with a gondola-like synchronous motor

Also Published As

Publication number Publication date
DE202006020388U1 (de) 2008-09-25

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