CN104812665A - Ship propulsion device and ship provided with same - Google Patents
Ship propulsion device and ship provided with same Download PDFInfo
- Publication number
- CN104812665A CN104812665A CN201280076825.0A CN201280076825A CN104812665A CN 104812665 A CN104812665 A CN 104812665A CN 201280076825 A CN201280076825 A CN 201280076825A CN 104812665 A CN104812665 A CN 104812665A
- Authority
- CN
- China
- Prior art keywords
- fin
- propeller
- screw propeller
- boats
- ships
- 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.)
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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
- B63H1/20—Hubs; Blade connections
-
- 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
- B63H1/28—Other means for improving propeller efficiency
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)
Abstract
A ship propulsion device (1) in which a fin (6) is provided to a propeller boss cap (5) attached to the rear side of a propeller boss (2) of a screw propeller and the fin (6) is disposed the rear of the space between propeller blades (3), wherein the shape of the fin (6) is formed by creating torsion in the fin (6) so that, relative to the base (6bf-6ba) of the fin (6), a front edge part (6tf) on the distal end side (6tf-6ta) of the fin (6) is positioned rearward and a rear edge (6ta) is positioned frontward. In a ship propulsion device formed from a screw propeller in which a propeller boss cap (5) provided with fins is used, the propulsion unit is thereby made more efficient than a ship propulsion device in which a propeller boss cap (5) provided with fins and having a conventional fin shape is used, and more efficient than a ship provided with the ship propulsion device.
Description
Technical field
The present invention relates to a kind of propelling unit of the boats and ships of screw propeller and possess the boats and ships of this propelling unit of using, more specifically, relate on the propeller boss cover (boss cap) on the propeller boss being arranged on screw propeller and fin is set thus the propelling unit of the boats and ships of the propulsion quality of raising screw propeller and the boats and ships possessing this propelling unit.
Background technology
Most boats and ships use screw propeller as its propelling unit, and the propeller characteristic improving its propeller efficiency etc. contributes to the raising of fuel efficiency widely.Therefore, made the wing number of screw propeller, the wing shape, developed area, pitch angle, bias angle etc. about the research of the wing of screw propeller, have developed various wing-like.
In order to the raising of this propeller characteristic, such as, as described in the JP 7-121716 publication of Japanese publication, have developed the propeller boss cover 5 of the band rectifying ribs as shown in Fig. 9 to 12, it is near screw propeller propeller boss 2, improves propeller efficiency by the propeller boss eddy current reduced in the wake flow of screw propeller propeller boss cover 5.
In the propeller boss cover 5 of this band rectifying ribs, the number (being 4 in fig .9) that order is arranged on the fin 6 on propeller boss cover 5 is equal with the number (being 4 in fig .9) of each propeller blade (spiral paddle) 3.In addition, as shown in Figure 10, about the setting angle α of fin 6, the geometric pitch angle ε of its root relative to propeller blade 3 has the relation of (-20 °≤α-ε≤+ 30 °).About the length direction of fin 6, the leading edge of fin 6 is equal on screw propeller fore-and-aft direction with the trailing edge of the root of propeller blade 3, or than this trailing edge rearward (b >=0).In addition, the position (a > 0) in the gap of the root of adjacent propeller blade 3 is arranged on.Further, as shown in Figure 11 and Figure 12, the maximum gauge (2r) of the axis from propeller boss cover 5 main body of fin 6 is larger than the diameter Dba of the cover mounting end 2a of screw propeller propeller boss 2, and is less than 33% of diameter of propeller (2R).
About the action effect of the propeller boss cover 5 of this band rectifying ribs, rectifying ribs 6 does not produce thrust in self, play the effect of the current plate of the generation of the hub eddy current in the wake flow reducing propeller boss cover 5, by this valve action, the hub eddy diffusivity of the wake flow of propeller boss cover 5 and the induced drag caused because of vortex reduced on the aerofoil of propeller blade (spiral paddle) 3, as a result, can not moment of torsion be increased, obtain the significantly raising of propeller characteristic (propeller efficiency).
In addition, such as, described in patent No. 3491890 publication of Japanese publication, propose a kind of screw propeller with the boats and ships of hub eddy current cancellation element, its have the vortex from screw propeller propeller boss eliminating this rectifying ribs etc. hub eddy current cancellation element boats and ships screw propeller in, the whole efficiency of screw propeller is improved in the mode making hub eddy current cancellation element play its effect fully, and also obtain for the purpose of profitability in intensity, make the pitch of the pitch in the wing root portion in screw propeller or the pars intermedia of camber ratio screw propeller or camber larger.
In addition, such as, as described in the Beneficial 5-7599 publication of Japanese publication and the Beneficial 7-34795 publication of Japanese publication, propose a kind of screw propeller propeller boss with fin, fin is not arranged on propeller boss cover by it, and in the downstream of the blade of the screw propeller of screw propeller propeller boss, the multi-disc rectifying ribs of number identical with blade is arranged on the lateral circle surface of the shaft hub removed outside propeller boss cover.
On the other hand, inventors of the present invention consider, use the propelling unit of the boats and ships of the propeller boss cover of band rectifying ribs whether can be sought the raising of propeller efficiency further by the shape of fin, use and be contemplated that a large amount of shape of the fin of basis imagination with various and carry out flume experiment, propose can improve further propeller efficiency, the propelling unit of the boats and ships of use screw propeller as below and possess the boats and ships of this propelling unit.
As such one, propose in the JP 2010-215187 publication of Japanese publication: in order to improve propeller efficiency, and improve workability, and lightweight, the aft end face of propeller boss cover is formed at end face, or, the shape of rearward end is received in the scope of 20% of the total length of the screw propeller propeller boss cover from periphery, and make total length be 0.28 times of the diameter of cover leading section to 0.76 times, make the diameter of the rearward end of screw propeller propeller boss cover be 0.35 times of the diameter of the exterior region of screw propeller propeller boss cover to 0.95 times.
In addition, inventors of the present invention obtain experience below and propose the improvement of fin.That is, because the fin plane earth of prior art is formed, thus in root and tip side, become identical relative to the angle of prop shaft.But, according to numerical value hydrodynamics method (CFD (computational fluid mechanics) calculating), analyze the flowing of flap surface, result obtains following experience: the direction flowing into the flowing of fin is different in the root and tip side of fin, and the trailing edge side, periphery of the fin of this aspect becomes resistance.
Based on this experience, considering the part of the trailing edge side, periphery by excising fin thus improving propeller efficiency, in the JP 2010-234861 publication of Japanese publication, propose: in order to improve propulsion coefficient, and improve workability and lightweight, with the leading section diameter of screw propeller propeller boss cover for datum diameter, make the latter half of shape of fin be formed as: in the central authorities of the front-end and back-end of the root of aforementioned fin, the diameter of fin is 2.0 times of aforementioned basic diameter, in the rearmost end position of aforementioned fin, diameter is 1.5 times of aforementioned basic diameter.
According to the above mentioned facts, inventors of the present invention advance research further, airfoil is set by considering the change in the direction of the flowing flowing into fin, thus obtain the lift that can increase the tip side of fin more energetically, the airfoil of the further raising of propeller efficiency can be sought, be sure of this point and realize the present invention.
[prior art document]
[patent documentation]
Patent documentation 1: the JP 7-121716 publication of Japanese publication
Patent documentation 2: patent No. 3491890 publications of Japanese publication
Patent documentation 3: the Beneficial 5-7599 publication of Japanese publication
Patent documentation 4: the Beneficial 7-34795 publication of Japanese publication
Patent documentation 5: the JP 2010-215187 publication of Japanese publication
Patent documentation 6: the JP 2010-234861 publication of Japanese publication.
Summary of the invention
[inventing the problem that will solve]
The object of the invention is to, a kind of propelling unit of the boats and ships being with by use the screw propeller of the screw propeller propeller boss cover of fin to be formed is provided and possesses in the boats and ships of this propelling unit, compare with the boats and ships possessing this propelling unit with the propelling unit of the boats and ships of the screw propeller propeller boss cover of the fin of the airfoil of prior art with use, more can improve the propelling unit of the boats and ships of propeller efficiency and possess the boats and ships of this propelling unit.
[scheme for dealing with problems]
For reaching the propelling unit of the boats and ships of above-mentioned purpose, at the screw propeller propeller boss cover of rear side of the screw propeller propeller boss being installed on screw propeller, fin is set, and this fin is configured in the rear between spiral paddle, it is characterized in that, about the shape of aforementioned fin, so that the exterior region of the tip side of aforementioned fin moves to rear side relative to the root of aforementioned fin and hinder marginal part moves to the mode of front side, arrange at aforementioned fin and reverse and formed.
According to this formation, consider the direction of the flowing of the tip side flowing into fin, exterior region due to the tip side of the fin with the root relative to fin becomes rear side and the mode that hinder marginal part becomes front side arranges torsion at fin, so can prevent the tip side of fin from becoming resistance, and the lift of the tip side of fin can be increased, thus can seek the further raising of propeller efficiency.
In the propelling unit of above-mentioned boats and ships, if make relative to the aforementioned torsion of aforementioned fin root, the windup-degree of tip side are more than 0 degree and angle in the scope of less than 20 degree, so with fairly simple benchmark in most boats and ships, can prevent the tip side of fin from becoming resistance, and the lift of the tip side of fin can be increased.
In addition, for reaching the propelling unit of the boats and ships of above-mentioned purpose, replacing aforementioned fin being arranged on said spiral oar propeller boss cover, aforementioned fin be arranged on the rear portion of the spiral paddle of the screw propeller propeller boss of screw propeller and form.This is because fin effect is determined by the position relationship with spiral paddle, so there is the position relationship according to screw propeller propeller boss and screw propeller propeller boss cover, fin is not arranged on situation screw propeller propeller boss cover being arranged on screw propeller propeller boss yet.
In addition, the boats and ships for reaching above-mentioned purpose possess the propelling unit of above-mentioned boats and ships and form.Thus, a kind of boats and ships can be provided, its with possess the fin used with the airfoil using prior art screw propeller propeller boss cover boats and ships propelling unit boats and ships compared with, improve propeller efficiency.
[effect of invention]
According to the propelling unit of boats and ships of the present invention, in the propelling unit that the screw propeller by the screw propeller propeller boss cover employing band fin is formed, consider the change in the direction of the flowing flowing into fin, with the root relative to fin, the exterior region of the tip side of fin becomes rear side and the mode that hinder marginal part becomes front side arranges torsion at fin, thus the lift of the tip side of fin can be increased, and seek the further raising of propeller efficiency.
In addition, according to the boats and ships of propelling unit possessing boats and ships of the present invention, owing to using the propelling unit of boats and ships that propeller efficiency is high, the raising of propulsion coefficient thus can be sought.Even if if little by little can also improve this propulsion coefficient, be so the more than ten years more than during navigation and consume in the boats and ships of a large amount of fuel, the saving of very large fuel can be become.
Accompanying drawing explanation
Fig. 1 be the formation of the propelling unit of the boats and ships illustrated in embodiments of the present invention from the figure viewed from rear.
Fig. 2 is the lateral plan of the propelling unit of the boats and ships of Fig. 1.
Fig. 3 is the lateral plan that the twisting states of fin and the screw propeller propeller boss cover of windup-degree are shown.
Fig. 4 is the fragmentary perspective view that the twisting states of fin and the screw propeller propeller boss cover of windup-degree are shown.
Fig. 5 is the A-A cutaway view from the Fig. 3 viewed from rear at the angle of inclination that fin is shown.
Fig. 6 is the fragmentary perspective view of the screw propeller propeller boss cover of fin when illustrating that windup-degree are 10 degree.
Fig. 7 is the fragmentary perspective view of the screw propeller propeller boss cover of fin when illustrating that windup-degree are 0 degree.
Fig. 8 is the fragmentary perspective view of screw propeller propeller boss cover of fin when illustrating that windup-degree are-10 degree.
Fig. 9 is from the figure viewed from rear in the boats and ships of the formation of the propelling unit that boats and ships of the prior art are shown.
Figure 10 is the lateral plan of the propelling unit of the boats and ships of Fig. 9.
Figure 11 is the lateral plan of the shape that screw propeller propeller boss cover of the prior art is shown.
Figure 12 is the lateral plan of the position relationship that spiral paddle of the prior art and fin are shown.
Detailed description of the invention
Below, the embodiment of the propelling unit that the boats and ships that the present invention relates to are described with reference to accompanying drawing and the boats and ships possessing this propelling unit.At this, although be illustrated, when the present invention also can be applicable to the rear portion of spiral paddle fin being arranged on screw propeller propeller boss with the example fin at the rear being configured in spiral paddle being configured in screw propeller propeller boss cover.In addition, Fig. 1 to Fig. 5 and Fig. 6 to 12 changes the shape of screw propeller propeller boss, spiral paddle, screw propeller propeller boss cover, fin etc. or size in understandable mode and illustrates, these shapes or size are different from actual.In addition, in Fig. 3, Fig. 5, Figure 10 and Figure 12, for ease of observing, in mapping and illustrate easily on basis, omitting apparent spiral paddle and fin and illustrating.
As shown in Fig. 1 to Fig. 5, the propelling unit 1 of the boats and ships of the embodiments of the present invention screw propeller be made up of screw propeller propeller boss (propeller boss) 2 and the screw propeller fin 3 being arranged on this screw propeller propeller boss 2, the screw propeller propeller boss cover (propeller boss cover) 5 be connected in the rear end of screw propeller propeller boss 2 and the fin 6 that is arranged on this screw propeller propeller boss cover 5 is formed.
In addition, screw propeller propeller boss cover 5 is formed by the swivel being S. A. with screw propeller S. A. Pc, and forms the rearward end 5a of this screw propeller propeller boss cover 5 with end face.This swivel forms the bus and the tapering shape formation towards rear that rotate with smooth curve or straight line.
At this, as shown in FIG. 3, using the leading section diameter Dcf of screw propeller propeller boss cover 5 as datum diameter Ds, simultaneously, make the total length Lc of this screw propeller propeller boss cover 5 be preferably 0.28 times of datum diameter Ds to 0.76 times, make the diameter Dca of the rearward end 5a of this screw propeller propeller boss cover 5 be preferably 0.35 times of datum diameter Ds to 0.95 times.In addition, the diameter Dcf of this leading section 5f is equivalent to the lip diameter of screw propeller propeller boss cover 5.
In addition, as shown in FIG. 3, when the bus of swivel of the outer peripheral face 5b making formation screw propeller propeller boss cover 5 is straight line, the shape of screw propeller propeller boss cover 5 becomes the frustum of a cone, becomes and manufactures easily.In addition, although not shown, even if but when making bus be smooth curve, as the tapering shape glossily from front towards rear, preferably, making the shape of the rearward end 5a of screw propeller propeller boss cover 5 in the cross section perpendicular to screw propeller S. A. Pc, is within 20% of the length Lc of screw propeller propeller boss cover 5 from the deviation of the shape of the frustum of a cone.
In addition, the end face of the leading section 5f of screw propeller propeller boss cover 5 is formed to aspect due to the relation of the aft end face 2a of joint screw propeller propeller boss 2.On the other hand, the end face of the rearward end 5a of screw propeller propeller boss cover 5 as shown in FIG. 3, although preferably formed with plane from the viewpoint work, also can formed with the circular cone of almost plane or swivel etc.Even if in this case, make the shape of rearward end 5a be configured to the distance of the fore-and-aft direction of periphery and central part to be received in the scope of 20% of the total length Lc of screw propeller propeller boss cover 5.
As shown in Figs. 1-4, fin 6 is arranged on the screw propeller propeller boss cover 5 of the rear side of the screw propeller propeller boss 2 being installed on screw propeller 1, and this fin 6 is configured in the rear between spiral paddle 3.That is, from the front of prop shaft Pc to when seeing backward directions, the front end 6bf of the root (6bf to 6ba) of fin 6 is configured in the rear end of the root of spiral paddle 3 each other.In addition, from the side time, the front end 6bf of the root (6bf to 6ba) of fin 6 configures rearward than the rear end of the root of spiral paddle 3.Although this fin 6 also can have positive and negative camber and be formed, from the simplicity work and the abatement aspect of cost of manufacture, writing board shape is suitable for.In addition, this fin 6 also can be installed with positive and negative leaning angle.
In addition, about the length of fin 6, because the front end 6bf of the root (6bf to 6ba) of fin 6 and rear end 6ba is necessary to be configured in screw propeller propeller boss cover 5, so the relation of setting angle α due to the fin 6 with the rotation centerline relative to screw propeller propeller boss cover 5, be naturally restricted.Such as, the leading edge 6bf of the root (6bf to 6ba) of fin 6 about the fore-and-aft direction of screw propeller propeller boss 2, equal with the trailing edge of the root of spiral paddle 3 or compared with this trailing edge rearward.
In addition, about the angle [alpha] of the installation of fin 6, in the same manner as prior art, as shown in Figure 10, relative to the geometric pitch angle ε of the root of propeller blade 3, there is the relation of (-20 °≤α-ε≤+ 30 °) and install.In addition, the position in the gap of the root of adjacent spiral paddle 3 is arranged on.As the setting angle α of fin 6, identical with the screw propeller propeller boss cover 5 of the fin of band prior art, also can install with leaning angle γ as shown in fig. 5.This Fig. 5 illustrates that with the leaning angle γ of fin 6 be the situation of 0 installation and the figure of situation that installs with positive angle (+γ) or negative leaning angle (-γ).
In addition, about the thickness direction of fin 6, although make work easy by the aspect that flat board is equal thicknesses, even if with a bit to improve in situation that performance is target, be wing-like.In addition, also can bent flat plate and camber is set or camber is set with wing-like, when arranging this camber, consider and the relation of the shape of screw propeller propeller boss cover 5 and in the root of fin 6, the direction different from the camber of spiral paddle 3 arranges camber, and preferably producing the moment of torsion Qp produced with spiral paddle 3 is reciprocal moment of torsion Qf.
And, in the present invention, as shown in figs. 3 and 4, fin 6, consider the direction flowing into the root (6bf to 6ba) of fin 6 and the flowing of tip side (6tf to 6ta), the mode that exterior region 6tf becomes rear side, hinder marginal part 6ta becomes front side of the tip side (6tf to 6ta) of fin 6 with the root (6bf to 6ba) relative to fin 6, holds the torsion of twist angle δ in fin 6 setting and is formed.In addition, depend on the flowing and screw propeller etc. of stern, in usual most of the cases, the windup-degree of fin 6 are preferably more than 0 degree (degree) and angle in the scope of less than 20 degree.So reverse the lift increase effect caused to tail off because if less than 0 degree, if large so resistances increase, so preferably make it within the scope of this than 20 degree.In addition, positive and negative and stagger angle α positive and negative contrary of these windup-degree δ.
According to this formation, can prevent from becoming resistance near the hinder marginal part 6ta of the tip side (6tf to 6ta) of fin 6, particularly tip side (6tf to 6ta), and the lift of the tip side (6tf to 6ta) of fin 6 can be increased.
In addition, relative with an example of the fin of the trailing edge excision type recorded in as the JP 2010-234861 publication of prior art, the fin (windup-degree δ=0 degree) not comprising torsion is changed fin height (transverse axis) and to try series of computation simultaneously with of the present invention comprising comparing of the fin (windup-degree δ=10 degree) of torsion, and the fin one obtaining comprising torsion compared with the fin not comprising torsion can improve the result of propeller efficiency η more.
In addition, only in order to reference, the fragmentary perspective view of δ=10 of windup-degree shown in Fig. 6 degree, the fragmentary perspective view of δ=0 of windup-degree shown in Fig. 7 degree, the fragmentary perspective view of δ=-10 of windup-degree shown in Fig. 8 degree.In addition, distinguishing as the scope from windup-degree δ, the formation of the fin of Fig. 7 and Fig. 8 is reference, is the formation of extraneous fin of the present invention.
According to the propelling unit 1 of above-mentioned boats and ships, for the shape of fin 6, consider the direction of the flowing of the tip side (6tf to 6ta) flowing into fin 6, the mode that leading section 6tf becomes rear side, hinder marginal part 6ta becomes front side of the tip side (6tf to 6ta) of fin 6 with the root (6bf to 6ba) relative to fin 6, torsion be set at fin 6 and the lift of the tip side (6tf to 6ta) of fin 6 can be increased, thus can seek the further raising of the propeller efficiency of the propelling unit 1 of boats and ships
In addition, the present invention is also applicable to the situation of the rear portion of the spiral paddle 3 fin 6 being arranged on screw propeller propeller boss 5.When being arranged on the rear portion of this spiral paddle 3, using the diameter of datum diameter as the root of the rear end of the spiral paddle 3 in screw propeller propeller boss.When fin 6 is arranged on propeller boss cover 5, because propeller boss cover 5 is arranged on the restriction of the such physics in the rear of spiral paddle 3, although the trailing edge screw propeller of the leading edge of fin 6 and the root of spiral paddle 3 is equal or than this trailing edge rearward (b >=0) at fore-and-aft direction, but when fin 6 being arranged on the rear of spiral paddle 3 of screw propeller propeller boss 2, the front end of fin 6 also can be configured between spiral paddle.In this situation, b also can be negative, preferably-0.5 × Dcf < b < 0.By doing like this, even if can little by little also shorten the length of screw propeller propeller boss 5 and seek lightweight.
The boats and ships possessing the propelling unit of boats and ships of the present invention possess the propelling unit 1 of above-mentioned boats and ships and form.According to these boats and ships, because use the propelling unit 1 of above-mentioned boats and ships, the raising of propulsion coefficient can be sought.
utilizability in industry
The propelling unit of boats and ships of the present invention is in the propelling unit being with the screw propeller of the screw propeller propeller boss cover of fin to be formed by use, consider the change in the direction of the flowing flowing into fin, the mode that the exterior region of the tip side of fin becomes rear side with the root relative to fin, hinder marginal part becomes front side arranges torsion at fin, increase the lift of the tip side of fin, thus the further raising of propeller efficiency can be sought, so can utilize as the propelling unit of boats and ships.
In addition, the boats and ships possessing the propelling unit of boats and ships of the present invention can be sought the raising of propulsion coefficient and can save burnup, and the lightweight of the cardan shaft that the lightweight of propelling unit can be had to cause and the support structure of cardan shaft, so can utilize as a large amount of boats and ships.
nomenclature
1, the propelling unit of 1X boats and ships
2 screw propeller propeller boss
The aft end face of 2a screw propeller propeller boss
3 spiral paddles
5 screw propeller propeller boss covers
The rearward end of 5a screw propeller propeller boss cover
The outer peripheral face of 5b screw propeller propeller boss cover
The leading section of 5f screw propeller propeller boss cover
6 fins
The rear end of the root of 6ba fin
The front end of the root of 6bf fin
The rear end of the tip side of 6ta fin
The front end of the tip side of 6tf fin
The hand of rotation distance of a fin front end and propeller blade
The screw propeller fore-and-aft direction distance of b propeller blade rear end and fin front end
The diameter of the rearward end of Dca screw propeller propeller boss cover
The diameter of the leading section of Dcf screw propeller propeller boss cover
Ds datum diameter
The length of Lc screw propeller propeller boss cover
Pc screw propeller S. A.
The setting angle of α fin
The geom pitch angle of the root of ε propeller blade
The mounting inclination angle degree of γ fin
The windup-degree of δ fin.
Claims (4)
1. the propelling unit of boats and ships, at the screw propeller propeller boss cover of rear side of the screw propeller propeller boss being installed on screw propeller, fin is set, and this fin is configured in the rear between spiral paddle, it is characterized in that, about the shape of described fin, so that the exterior region of the tip side of described fin moves to rear side relative to the root of described fin and hinder marginal part moves to the mode of front side, arrange at described fin and reverse and formed.
2. the propelling unit of boats and ships according to claim 1, is characterized in that, make the root of the described torsion relative to described fin, the windup-degree of tip side are more than 0 degree and angle in the scope of less than 20 degree.
3. the propelling unit of boats and ships according to claim 1 and 2, is characterized in that, replaces arranging described fin at described screw propeller propeller boss cover, described fin is arranged on the rear portion of the spiral paddle of the screw propeller propeller boss of screw propeller.
4. boats and ships, is characterized in that, possess the propelling unit of the boats and ships according to claim 1,2 or 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/078512 WO2014068771A1 (en) | 2012-11-02 | 2012-11-02 | Ship propulsion device and ship provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104812665A true CN104812665A (en) | 2015-07-29 |
| CN104812665B CN104812665B (en) | 2017-03-22 |
Family
ID=50626734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280076825.0A Active CN104812665B (en) | 2012-11-02 | 2012-11-02 | Ship propulsion device and ship provided with same |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP5923179B2 (en) |
| KR (1) | KR20150095619A (en) |
| CN (1) | CN104812665B (en) |
| DE (1) | DE112012007098T5 (en) |
| SG (1) | SG11201503419XA (en) |
| WO (1) | WO2014068771A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101955413B1 (en) * | 2017-11-30 | 2019-03-08 | 재단법인한국조선해양기자재연구원 | Divergent propeller cover cap |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031975A (en) * | 1987-09-14 | 1989-03-29 | 大阪商船三井船舶株式会社 | The propeller hub lid of band fin keel |
| JPH0744559Y2 (en) * | 1989-05-31 | 1995-10-11 | 三菱重工業株式会社 | Marine propeller with boss cap |
| JP2000247293A (en) * | 1999-03-02 | 2000-09-12 | Yukio Nakamura | Impeller |
| CN102159454A (en) * | 2009-03-18 | 2011-08-17 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship with same |
| CN102159453A (en) * | 2009-03-30 | 2011-08-17 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship with same |
| CN202368779U (en) * | 2011-12-12 | 2012-08-08 | 江苏华海船舶设计有限公司 | Energy-saving propeller |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0734795Y2 (en) * | 1988-01-14 | 1995-08-09 | 株式会社西日本流体技研 | Propeller Boss with fins for outboard motors |
| JPH0241898U (en) * | 1988-09-16 | 1990-03-22 | ||
| JP2947357B2 (en) * | 1989-08-18 | 1999-09-13 | 日産自動車株式会社 | Propeller structure of high-speed boat |
| US8702395B2 (en) * | 2008-10-16 | 2014-04-22 | The Penn State Research Foundation | Hub fin device |
-
2012
- 2012-11-02 KR KR1020157010555A patent/KR20150095619A/en not_active Application Discontinuation
- 2012-11-02 DE DE112012007098.4T patent/DE112012007098T5/en not_active Ceased
- 2012-11-02 JP JP2014544182A patent/JP5923179B2/en active Active
- 2012-11-02 SG SG11201503419XA patent/SG11201503419XA/en unknown
- 2012-11-02 WO PCT/JP2012/078512 patent/WO2014068771A1/en active Application Filing
- 2012-11-02 CN CN201280076825.0A patent/CN104812665B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031975A (en) * | 1987-09-14 | 1989-03-29 | 大阪商船三井船舶株式会社 | The propeller hub lid of band fin keel |
| JPH0744559Y2 (en) * | 1989-05-31 | 1995-10-11 | 三菱重工業株式会社 | Marine propeller with boss cap |
| JP2000247293A (en) * | 1999-03-02 | 2000-09-12 | Yukio Nakamura | Impeller |
| CN102159454A (en) * | 2009-03-18 | 2011-08-17 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship with same |
| CN102159453A (en) * | 2009-03-30 | 2011-08-17 | 株式会社三井造船昭岛研究所 | Ship propulsion device and ship with same |
| CN202368779U (en) * | 2011-12-12 | 2012-08-08 | 江苏华海船舶设计有限公司 | Energy-saving propeller |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20150095619A (en) | 2015-08-21 |
| JP5923179B2 (en) | 2016-05-24 |
| DE112012007098T5 (en) | 2015-10-22 |
| CN104812665B (en) | 2017-03-22 |
| JPWO2014068771A1 (en) | 2016-09-08 |
| SG11201503419XA (en) | 2015-06-29 |
| WO2014068771A1 (en) | 2014-05-08 |
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