Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
  • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
  • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
  • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
  • B63B1/08—Shape of aft part
• • 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
  • B63H5/16—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
  • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
  • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
  • B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T70/00—Maritime or waterways transport
  • Y02T70/10—Measures concerning design or construction of watercraft hulls

Definitions

• the present invention relates to an air cavity and an air lubrication type vessel having a stern shape having a stepped shape around a propeller, and more particularly, to reduce the amount of carbon dioxide generated while minimizing the receiving area between the hull and water. It has a stepped shape around the propeller to improve the propulsion efficiency by reducing friction resistance through air and air bubble lubrication and blocking the air and air bubbles flowing into the propeller by using the stern staircase.
• An improved air cavity and air lubricated vessel is stern shaped.
• Yes Dutch also discloses an air cavity vessel with which the air has Patent No. 9,301,476 injection is formed on the bottom of the hull.
• the ship is propelled by a submerged propeller, which is a caviar.
• Korean Patent Nos. 0992261, 0993326, 1019436, and the like have been disclosed.
• the resistance reduction vessels that have built longitudinal air cavities including these include: air cavity :; As it is composed of ⁇ ⁇ mol ⁇ ⁇ , it is applicable only to new ships, and the hull structure is complicated, so the longitudinal strength, buoyancy calculation and bottom tank structure of the ship are complicated. Not only does it significantly affect the construction cost of furnaces, but it also has the disadvantage of enormous cost and time to apply to existing vessels.
• the present invention was created in view of the limitations of the prior art as described above, and was created to solve this problem, and the dam (Dam) and the flap (Flap) for implementing the air cavity in the basic shape of the hull on the bottom and side
• the dam (Dam) and the flap (Flap) for implementing the air cavity in the basic shape of the hull on the bottom and side
• the structure is simple and simple, and it can be installed without the linear change of the existing hull, so that it can be easily installed on the existing ships as well as the new construction, and the air cavity technology is applied while reducing the cost and time.
• Its main purpose is to provide a stern-shaped air cavity and air lubricated vessel with a staircase around a propeller to enable a lubricated vessel.
• the present invention is a means for achieving the above object, is fixed to the bottom and stern portion except the fore part at fixed intervals in the width direction of the hull, and extended in the longitudinal direction of the hull ' Cavity holes' forming bottom dam : and stern dam; A plurality of air supply pipes having a supply for supplying axial air; In the longitudinal direction of the bottom dam A plurality of slits formed at a bottom dam to supply some air to the ship as well as air communication between the air cavities at regular intervals; Including the discharge end side of the stern dam and is installed on the rear side of the rudder to induce a continuous vacuum through inducing a speed difference in the back of the propeller 3 ⁇ 4fl: staircase to block the air flowing out into the propeller; including; Provides a stern-shaped air cavity and air-lubricated vessel with a staircase around the propeller characterized by being constructed.
• the bottom dam is characterized in that the height is configured to be lowered toward the ship side from the center of the width increase of the hull.
• the stern side end of the air cavity is provided with a partition wall, the partition wall is protruded in a triangular shape relative to the surface fixed to the bottom surface, the stern side is formed so as to have a longer surface There is a characteristic.
• the side of the hull is characterized in that the flap is further provided with a flap for directly discharging a portion of the compressed air supplied through the air supply pipe close to the ship side of the air supply supply pipe to the ship side.
• the system welwell based on the high speed clothing of the propeller blocks the air and the air room flowing from the front of the propeller by using the suction S, that is, suction force, to prevent the inflow of the propeller.
• the propulsion efficiency is improved by smoothly discharging to the room after the propeller.
• the friction area of the water is reduced to minimize the frictional resistance, thereby reducing the carbon dioxide emissions.
• FIG. 1 is an exemplary side view of an air cavity and air lubricated vessel in accordance with the present invention.
• FIG 2 is an exemplary bottom view of an air cavity and air lubricated vessel in accordance with the present invention.
• FIG. 3 is a cross-sectional view taken along the line A-A of FIG.
• Figure 4 is an illustration of a flap applied to the air cavity and air lubrication type vessel according to the present invention.
• Air cavity technology is applied to convert the friction surface between hull and water into friction between air and air bubbles to reduce the carbon dioxide (C0 2 ) generated during the operation of the «3 ⁇ 4 « 3 ⁇ 4 ⁇ line. It is configured to improve propulsion efficiency by completely blocking the propulsion efficiency deterioration of the air cavity vessel due to inflow to prevent air from entering the propeller side through the stern stairway shape.
• to implement the air lubrication ⁇ 1 without having to add the shape of the ship ⁇ ⁇ diameter can be easily implemented in existing vessels, is configured to maximize the air lubrication on the bottom and side. .
• the air cavity and air lubrication type vessel includes a plurality of bottom dam (200) at a predetermined interval in the width direction of the hull 100 on the bottom do.
• the bottom dam 200 is a tube member having a certain width and height, is fixed to the bottom, and supplies air for the air cavity to the central air cavity area through a plurality of slots.
• the structure is possible, it is arranged long in the longitudinal direction of the hull (100).
• the bottom dam 200 is provided between the bow portion 110 and the stern portion 120 except for the bow portion 110 and the stern portion 120.
• the bottom dam 200 is not provided inside the hull 100 unlike the existing one, and is fixed to the outside of the hull 100, that is, attached to the bottom, so that the bottom dam 200 is installed.
• the existing vessels can be easily installed without any conditions . Has the advantage to
• the bottom dam 200 has at least four or more so as to implement stable air cavities A, B, and C during rolling of the hull 100. i025>cinnamin;
• the bottom dam 200 is configured to have a height difference so that the height becomes 3 ⁇ 4 toward both sides of the hull 100 with respect to the center, so that the excess of the air cavities A, B, and C of FIG.
• the side surface of the hull 100 is guided to flow 7)
• the formation of droplets (D) can further increase the air lubrication function (reduction of frictional resistance with seawater).
• each of the bottom dam 200 has a plurality of as shown in FIG.
• This structure helps to increase the propulsion efficiency by reducing the resistance when sailing the ship.
• the stern portion 120 of the hull 100 is provided with a stern dam 210, which is a kind of stern stairway in the form of wrapping it with a propeller as a propeller ( ⁇ ) therebetween.
• the stern dam 210 having a stern stair shape has a stern surface and a step (height difference) as shown in FIGS. 2 and 3 in accordance with the shape of the stern portion 120 in which the propeller ( ⁇ ) is installed.
• the stern dam 210 is installed to prevent air bubbles moving toward the stern from being directly introduced into the propeller ( ⁇ ) to prevent the propulsion efficiency from dropping.
• the rear of the rudder (R) of the stern portion 120 has a shape that the height of the step is increased to the ⁇ 3 ⁇ 4 ⁇ side ⁇ of the stern step, side stern dam (2i0) ⁇ ⁇ Stage 230 is further formed.
• the staircase 230 is discharged through the banister which high speed propeller (P), that is the wake-based
• the stage 230 is used as the middle sam to induce a difference in the front and the rear, so that a vacuum is formed in a predetermined space at the rear end of the stern dam 210 so that the air escaped from the bottom and the side surface is sucked. It is prevented from entering the propeller P, and guided to discharge the hull 100 back with the wake smoothly.
• the boundary between the bottom dam 200 and the stern dam 210 more precisely the stern side end of the air cavity (A, B, C) partition wall ( 300 is provided, wherein the partition wall 300 has a triangular shape with one side longer than the other side with respect to the reference side forming a horizontal plane, and the stern side has a longer side to have a flow velocity difference in the air flow.
• the air inside the air cavities (A, B, C) is set so that the air does not immediately pass, so that the internal air can flow smoothly to the side of the hull (100).
• the bow bulkhead 310 is installed at the bow end of the air cavities (A, B, C).
• a number of air supply pipes 400 are installed vertically on the ship by the bottom dam 200 of the bow caviar ⁇ ⁇ , ⁇ , ⁇ .
• the air supply pipe 400 is provided with a valve 410 for adjusting the opening degree
• a feeder 420 is provided for forcibly supplying compressed air.
• some of the increase in air supplied to both sides of the air supply pipe 400 closest to the ship side may be configured to be discharged directly to the ship side through the flap 500 as shown in FIG. 2.
• the flap 500 when the compressed air supply when the flap 500 is opened when the air discharged by the flow of sea water does not spread far away of the hull 100 In close contact with the hull side, it moves along the side and performs a lubrication function to reduce frictional resistance between the hull and seawater between seawater.
• the air cavity and the air lubrication type vessel having a stern shape having a stair shape around the propeller according to the present invention have a plurality of dams having a means for forming air cavities (A, B, C).
• the bottom black has the advantage of being easy to implement because it is made to attach to the stern.
• a separate air outlet (not shown) is provided at the upper portion to discharge the remaining air, and the air outlet may be configured to communicate with a portion of the hull, and further include a valve for opening and closing if necessary. Can be.
• the flap 500 since the air flow flowing to the ship side is controlled by the flap 500, the air flow is guided to the ship side as closely as possible through the flow of sea water, thereby maximizing the air lubrication function.
• Hull 110 bow part
• Valve 420 Feeder

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• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Sealing Of Bearings (AREA)
• Sliding-Contact Bearings (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=48905546

Family Applications (1)

Country Status (4)

Cited By (3)

Families Citing this family (10)

Citations (4)

Family Cites Families (7)

• 2012
  • 2012-02-01 KR KR1020120010225A patent/KR101348081B1/ko active IP Right Grant
• 2013
  • 2013-01-31 IN IN6630DEN2014 patent/IN2014DN06630A/en unknown
  • 2013-01-31 WO PCT/KR2013/000785 patent/WO2013115577A1/ko active Application Filing
  • 2013-01-31 CN CN201380007544.4A patent/CN104080694B/zh not_active Expired - Fee Related

Patent Citations (4)

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