EP0271039A2 - Elément de propulsion pour bateaux - Google Patents

Elément de propulsion pour bateaux Download PDF

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Publication number
EP0271039A2
EP0271039A2 EP87118040A EP87118040A EP0271039A2 EP 0271039 A2 EP0271039 A2 EP 0271039A2 EP 87118040 A EP87118040 A EP 87118040A EP 87118040 A EP87118040 A EP 87118040A EP 0271039 A2 EP0271039 A2 EP 0271039A2
Authority
EP
European Patent Office
Prior art keywords
cylinder jacket
blades
drive
screw
drive element
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Withdrawn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
EP87118040A
Other languages
German (de)
English (en)
Other versions
EP0271039A3 (fr
Inventor
Josef Heck
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0271039A2 publication Critical patent/EP0271039A2/fr
Publication of EP0271039A3 publication Critical patent/EP0271039A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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 drive element for watercraft, in particular for ships, with screw wings fastened on a drive shaft protruding from the ship's hull and oriented at a certain angle thereto, which are surrounded by a cylinder jacket.
  • the present invention has for its object to provide a drive element for watercraft, especially ships, of the type mentioned, with which the amount of water or the water flow from the beginning, ie. H. in front of the area of the screw wings, essentially in the direction of the drive axis and the screw wings, whereby the amount of water glides to the ship's propeller and the water is moved from the outside to the inside in a so-called manner and without great energy loss.
  • a drive element of the type mentioned which is characterized in that on the drive axis at a distance L from the screw vanes in the direction of the drive motor blades with at least partially curved course in a screw-like arrangement up to the screw vanes, into the interior reaching the cylinder jacket and centrally attached to it such that the water flow in front of the area of the screw wings is essentially forced inwards in the direction of the drive axis and the screw wings.
  • the main advantage of the drive element according to the invention is that the additional blades, which have an extension up to near the end of the cylinder jacket, force the amount of water or water flow from the beginning to the normal propeller, ie into the cylinder jacket, so that if possible no energy is drifted outwards.
  • the blades are at least partially cone-shaped and have the shape of a hollow paraboloid, a hollow ellipsoid or a hollow hyperboloide and grip helically around the drive axis. This causes a so-called shoveling of the amount of water towards the screw wings.
  • four blades are arranged centrically and symmetrically at a distance from each other on the drive axis on the one hand on a hub and on the other hand in the cylinder jacket.
  • the blades on their side edges tangentially, lying along a surface line, can be fixed in the cylinder jacket and the other curved side edges can extend between the screw wings.
  • the blades have for their fastening on a hub on the drive axis curved recesses and are rounded in the area of the hub, the rotating body of the involute of the blades forming a paraboloid, an ellipsoid or a hyperboloid.
  • the width B of the cylinder jacket is approximately equal to the distance A of the end of the cylinder jacket from the fastening hub of the blades, where A + B ⁇ L is.
  • turbine blades extending outward can also be arranged on another cylinder jacket that can be pushed on.
  • FIGS. 1 to 4 on a drive axle 1 protruding from the ship's hull, not shown, by means of a hub 2, one out of four Screw wings 3 existing propeller attached.
  • the screw wings 3 are aligned in a known manner at a certain angle to the drive axis 1 in order to obtain the greatest possible drive torque on the axis.
  • the screw wings 3 are surrounded by a cylinder jacket 4 with the width B and fastened to it.
  • the blade 5 has at least partially the shape of a conical section, in particular a hollow paraboloid, a hollow ellipsoid or a hollow hyperboloide, and engages around the drive shaft 1 in a helical manner.
  • the front end is rounded at 7 on the hub 6, and the blade has a rounded notch 8 in the front region which merges into a side edge 9 which protrudes from the inner wall 10 of the cylinder jacket and extends between the screw wings 3.
  • the other side edge 11 extends tangentially along a surface line of the cylinder shell 4.
  • the rotating body of the involute of the blades 5 corresponds to a paraboloid, an ellipsoid or a hyperboloid.
  • the width B of the cylinder jacket corresponds approximately to the distance A from End of the cylinder jacket up to the hub 6 of the blades 5.
  • the distance L of the hub 6 from the screw wings 4 is approximately L ⁇ A + B.
  • FIG. 5 A modified embodiment of the drive element according to the invention is shown in Figures 5 and 6.
  • a further cylinder jacket 12 is placed on the cylinder jacket 4, which turbine blades 13 favor the flow on the outside.
  • the arrangement is such that the cylinder jacket 12 slightly protrudes the cylinder jacket 4 towards the rear in the direction of the screw wings.
  • the main advantage is achieved that the blades 5 so-called shovel the water from the outside inwards, since the blades have an extension that extends almost to the jacket end of the cylinder jacket.
  • the screw wings 3 take over the pressurized amount of water and push it out through the protruding jacket end. As a result, practically no force is lost due to the effect of the width, since the amount of water slides from the beginning to the wing of the normal propeller, taking into account the transfer of the amount of water into the screw, so that practically no energy is lost and the drive element has a much greater thrust generated at a given engine power.
  • four blades 5 can be provided on the inside and eight blades 13 on the outer cylinder jacket 12.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Saccharide Compounds (AREA)
  • Insulated Conductors (AREA)
  • Physical Water Treatments (AREA)
  • Prevention Of Electric Corrosion (AREA)
EP87118040A 1986-12-12 1987-12-05 Elément de propulsion pour bateaux Withdrawn EP0271039A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863642483 DE3642483A1 (de) 1986-12-12 1986-12-12 Antriebselement fuer wasserfahrzeuge, insbesondere schiffe
DE3642483 1986-12-12

Publications (2)

Publication Number Publication Date
EP0271039A2 true EP0271039A2 (fr) 1988-06-15
EP0271039A3 EP0271039A3 (fr) 1989-06-14

Family

ID=6316054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118040A Withdrawn EP0271039A3 (fr) 1986-12-12 1987-12-05 Elément de propulsion pour bateaux

Country Status (5)

Country Link
EP (1) EP0271039A3 (fr)
JP (1) JPS63159194A (fr)
DE (1) DE3642483A1 (fr)
FI (1) FI875453A (fr)
NO (1) NO875179L (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT57606B (de) * 1909-04-05 1913-02-10 Jaroslav Engler Schraubenpropeller.
GB371224A (en) * 1931-07-07 1932-04-21 Willman Ielvid Miller Improvements in propellers
DE2903385A1 (de) * 1979-01-30 1980-07-31 Albert Ing Grad Koch Einrichtung fuer schiffsschrauben (propeller) zur wirkungsgradverbesserung (drallstrom-turbine)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310135A (fr) * 1963-03-06
GB192908A (en) * 1922-01-27 1923-02-15 Alexander Seay Improvements relating to screw propellers
DE860154C (de) * 1942-05-08 1952-12-18 Luebbe Schnitger Propeller
DE805848C (de) * 1948-11-24 1951-05-31 Luebbe Schnitger Propeller

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT57606B (de) * 1909-04-05 1913-02-10 Jaroslav Engler Schraubenpropeller.
GB371224A (en) * 1931-07-07 1932-04-21 Willman Ielvid Miller Improvements in propellers
DE2903385A1 (de) * 1979-01-30 1980-07-31 Albert Ing Grad Koch Einrichtung fuer schiffsschrauben (propeller) zur wirkungsgradverbesserung (drallstrom-turbine)

Also Published As

Publication number Publication date
JPS63159194A (ja) 1988-07-02
FI875453A0 (fi) 1987-12-11
DE3642483A1 (de) 1988-06-23
NO875179D0 (no) 1987-12-11
FI875453A (fi) 1988-06-13
EP0271039A3 (fr) 1989-06-14
NO875179L (no) 1988-06-13

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