JP2010095181A - Propulsion device for marine vessel - Google Patents

Propulsion device for marine vessel Download PDF

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JP2010095181A
JP2010095181A JP2008268647A JP2008268647A JP2010095181A JP 2010095181 A JP2010095181 A JP 2010095181A JP 2008268647 A JP2008268647 A JP 2008268647A JP 2008268647 A JP2008268647 A JP 2008268647A JP 2010095181 A JP2010095181 A JP 2010095181A
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propeller
rudder
horizontal fin
horizontal
span
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JP2008268647A
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Japanese (ja)
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Fumitoshi Ochi
文俊 越智
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IHI Corp
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IHI Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To exhibit high energy-saving effect by increasing thrust force generated by a horizontal fin behind a propeller. <P>SOLUTION: The propulsion device for the marine vessel includes: a rudder 12 positioned behind the propeller 11; and the horizontal fins 14 provided on both side surfaces of a rudder body 13 of the rudder 12 respectively, receiving a rotation flow generated by rotation of the propeller 11, and generating the thrust force T. The horizontal fin 14 has a shorter span than a radius of the propeller, and the propeller 11 is formed such that a pitch of a portion at an inner side in a propeller radial direction than a position in the propeller radial direction corresponding to the span of the horizontal fin 14, is larger than an average pitch. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、プロペラの回転によって生じる回転流を受けて推力を発生させる水平フィンを備えた船舶の推進装置に関する。   The present invention relates to a marine vessel propulsion apparatus including horizontal fins that generate thrust by receiving a rotational flow generated by rotation of a propeller.

船舶の省エネルギー化を目的として、プロペラの回転によって生じる流れのエネルギーを推力として回収するために、プロペラの後方に位置する舵に水平フィンを設けた船舶の推進装置が知られている（例えば、特許文献１及び２等参照）。   For the purpose of energy saving of a ship, a ship propulsion device is known in which a horizontal fin is provided in a rudder located behind a propeller in order to collect the flow energy generated by the rotation of the propeller as a thrust (for example, a patent Reference 1 and 2 etc.).

例えば、上記水平フィンは所定の迎え角で舵の側面に取り付けられる。この水平フィンがプロペラの回転によって生じる回転流を受けて揚力Ｌ（図１参照）を発生させ、この揚力Ｌのうち船舶の前方側へ向かう水平方向の成分（分力）Ｔ（図１参照）が船舶を前進させる推力となる。   For example, the horizontal fin is attached to the side of the rudder at a predetermined angle of attack. The horizontal fin receives a rotational flow generated by the rotation of the propeller to generate a lift L (see FIG. 1), and a horizontal component (component force) T of the lift L toward the front side of the ship (see FIG. 1). Becomes the thrust to move the ship forward.

特開平１１−１３９３９５号公報JP 11-139395 A 特開２００４−２９９４２０号公報JP 2004-299420 A

ところで、従来、プロペラの形状をプロペラ単体で所定の推力が得られるように設定していたため、水平フィンによって回収することができる推力が小さく、省エネルギー効果が小さくなる場合があった。   By the way, conventionally, since the shape of the propeller is set so that a predetermined thrust can be obtained with the propeller alone, the thrust that can be recovered by the horizontal fins is small, and the energy saving effect may be reduced.

例えば従来、プロペラの半径方向外側の部分（より具体的には、７０〜８０％の範囲（Ｒ／Ｒ0＝０．７０〜０．８０）、図３参照）で強い推力（プロペラ単体での推力）が得られるように、プロペラは、ピッチが半径方向外側の位置において半径方向内側の位置よりも大きくなる部分を有するように設定されていた（図３の一点鎖線参照）。このため、プロペラ半径よりも短いスパンを有する水平フィンの位置で発生する回転流は比較的弱く、水平フィンによって回収することができる推力が小さいことがあった。 For example, conventionally, a strong thrust (propeller alone) in a radially outer portion of the propeller (more specifically, in a range of 70 to 80% (R / R 0 = 0.70 to 0.80), see FIG. 3). The propeller has been set so as to have a portion where the pitch is larger at the radially outer position than at the radially inner position so that (thrust) can be obtained (see the one-dot chain line in FIG. 3). For this reason, the rotational flow generated at the position of the horizontal fin having a span shorter than the propeller radius is relatively weak, and the thrust that can be recovered by the horizontal fin may be small.

そこで、本発明の目的は、プロペラ後方の水平フィンによって発生させる推力を増加させて、高い省エネルギー効果を発揮することを可能とすることにある。   Therefore, an object of the present invention is to increase the thrust generated by the horizontal fin behind the propeller and to exhibit a high energy saving effect.

上記目的を達成するために本発明は、プロペラの後方に位置する舵と、該舵の舵本体の両方の側面にそれぞれ設けられ、上記プロペラの回転によって生じる回転流を受けて推力を発生させる水平フィンとを備え、該水平フィンは、プロペラ半径よりも短いスパンを有し、上記プロペラは、上記水平フィンのスパンに相当するプロペラ半径方向位置よりもプロペラ半径方向内側の部分のピッチが平均ピッチよりも大きくなるように形成されたものである。   In order to achieve the above-mentioned object, the present invention provides a horizontal rudder that is provided on both sides of a rudder located behind a propeller and a rudder main body of the rudder, and that generates thrust by receiving a rotational flow generated by the rotation of the propeller. And the horizontal fin has a span shorter than the propeller radius, and the propeller has a pitch in a portion radially inward of the propeller that is equal to the span of the horizontal fin, the pitch of the portion inside the propeller in the radial direction from the average pitch. Is formed to be larger.

本発明によれば、プロペラ後方の水平フィンによって発生させる推力を増加させて、高い省エネルギー効果を発揮することが可能となるという優れた効果を奏する。   According to the present invention, it is possible to increase the thrust generated by the horizontal fin behind the propeller, and to achieve an excellent effect of being able to exhibit a high energy saving effect.

以下、本発明の好適な実施形態を添付図面に基づいて詳述する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図１は、本発明の一実施形態に係る船舶の推進装置の側面図である。図２は、図１のII−II線矢視図である。   FIG. 1 is a side view of a marine vessel propulsion apparatus according to an embodiment of the present invention. 2 is a view taken along the line II-II in FIG.

図１及び図２に示すように、本実施形態に係る推進装置１０は、船舶１の船尾部に設けられたプロペラ１１と、プロペラ１１の後方に位置する舵１２とを備えている。舵１２は舵本体１３を有しており、本実施形態では、舵本体１３は、下部が側面視略矩形状に形成され且つ上部が側面視略台形状に形成されている。   As shown in FIGS. 1 and 2, the propulsion device 10 according to the present embodiment includes a propeller 11 provided at the stern portion of the ship 1 and a rudder 12 positioned behind the propeller 11. The rudder 12 has a rudder body 13. In this embodiment, the rudder body 13 has a lower part formed in a substantially rectangular shape in a side view and an upper part formed in a substantially trapezoidal shape in a side view.

また、本実施形態に係る推進装置１０は、舵１２の舵本体１３の両方の側面にプロペラ１１の軸心Ｃ１とほぼ同じ高さ位置に位置させてそれぞれ設けられ、略水平に（船舶幅方向に）延出する左右一対の水平フィン１４を有している。本実施形態では、各水平フィン１４は、翼断面形状を有しており、所定の迎え角Ａで舵１２の舵本体１３の側面に取り付けられている。   Further, the propulsion device 10 according to the present embodiment is provided on both side surfaces of the rudder main body 13 of the rudder 12 at substantially the same height position as the axis C1 of the propeller 11, respectively, and substantially horizontally (in the ship width direction). A) a pair of left and right horizontal fins 14 extending. In the present embodiment, each horizontal fin 14 has a blade cross-sectional shape and is attached to the side surface of the rudder main body 13 of the rudder 12 at a predetermined angle of attack A.

本実施形態では、プロペラ１１の回転方向Ｂは船舶１の後方から見て右回りであり、船舶１の左舷ではプロペラ１１の回転によって上昇流が生じ、船舶１の右舷ではプロペラ１１の回転によって下降流が生じる。よって、本実施形態では、船舶１の左舷側では上昇流が水平フィン１４に流れ込み、船舶１の右舷側では下降流が水平フィン１４に流れ込むこととなる。   In the present embodiment, the rotation direction B of the propeller 11 is clockwise when viewed from the rear of the ship 1. Upward flow is generated by the rotation of the propeller 11 on the port side of the ship 1, and lowering is caused by the rotation of the propeller 11 on the starboard side of the ship 1. A flow is generated. Therefore, in the present embodiment, the upward flow flows into the horizontal fin 14 on the port side of the ship 1, and the downward flow flows into the horizontal fin 14 on the starboard side of the ship 1.

ここで、本実施形態では、水平フィン１４は、プロペラ半径Ｒ0よりも短いスパンＳ（舵本体１３の中心Ｃ２から水平フィン１４の翼端までの長さ）を有している。水平フィン１４は、例えば、スパンＳがプロペラ半径Ｒ0の７０％以下に設定され、より好ましくは、スパンＳがプロペラ半径Ｒ0の５０〜７０％の範囲内に設定される。本実施形態の水平フィン１４は、スパンＳがプロペラ半径Ｒ0の６５％の長さに設定されている。 Here, in the present embodiment, the horizontal fin 14 has a span S (length from the center C2 of the rudder main body 13 to the blade tip of the horizontal fin 14) shorter than the propeller radius R0 . In the horizontal fin 14, for example, the span S is set to 70% or less of the propeller radius R 0 , and more preferably, the span S is set within a range of 50 to 70% of the propeller radius R 0 . In the horizontal fin 14 of the present embodiment, the span S is set to 65% of the propeller radius R 0 .

また、本実施形態では、プロペラ１１は、水平フィン１４のスパンＳに相当するプロペラ半径方向位置（Ｒ／Ｒ0＝０．６５）よりもプロペラ半径方向内側の部分のピッチが平均ピッチよりも大きくなるように形成されている（図３参照）。ここで、ピッチとは、プロペラが一回転で進むことができる理論的距離である。 Further, in the present embodiment, the propeller 11 has a pitch at a portion inside the propeller in the radial direction of the propeller in the radial direction of the propeller corresponding to the span S of the horizontal fin 14 (R / R 0 = 0.65). (See FIG. 3). Here, the pitch is a theoretical distance that the propeller can travel in one rotation.

次に、本実施形態の作用を説明する。   Next, the operation of this embodiment will be described.

図１に示すように、各水平フィン１４は所定の迎え角Ａで舵本体１３の側面に取り付けられており、プロペラ１１の回転流１５（下降流或いは上昇流）が水平フィン１４に流れ込むと、水平フィン１４に揚力Ｌが発生する。この揚力Ｌは水平フィン１４に流れ込む回転流１５（下降流或いは上昇流）に対して直交する方向に作用し、揚力Ｌのうち船舶１の前方側へ向かう水平方向の成分（分力）Ｔが船舶１を前進させる推力となる。   As shown in FIG. 1, each horizontal fin 14 is attached to the side surface of the rudder main body 13 at a predetermined angle of attack A, and when the rotating flow 15 (downflow or upward flow) of the propeller 11 flows into the horizontal fin 14, Lift L is generated in the horizontal fin 14. This lift L acts in a direction perpendicular to the rotating flow 15 (downflow or upflow) flowing into the horizontal fin 14, and a horizontal component (component force) T of the lift L toward the front side of the ship 1 is obtained. This is the thrust that moves the ship 1 forward.

ここで、本実施形態では、水平フィン１４はプロペラ半径Ｒ0よりも短いスパンＳを有し、プロペラ１１は、水平フィン１４のスパンＳに相当するプロペラ半径方向位置よりもプロペラ半径方向内側の部分のピッチが平均ピッチよりも大きくなるように形成されており、これにより、平均ピッチよりもピッチが大きい範囲（水平フィン１４のスパンＳに相当するプロペラ半径方向位置よりもプロペラ半径方向内側の部分）のプロペラ１１の後流は回転流れが強くなり、また水平フィン１４に対する回転流１５の流入角が大きくなる。従って、プロペラ１１後方の水平フィン１４によって発生させる推力を増加させて、高い省エネルギー効果を発揮することが可能となる。 Here, in the present embodiment, the horizontal fin 14 has a span S shorter than the propeller radius R 0 , and the propeller 11 is a portion on the inner side in the propeller radial direction from the propeller radial position corresponding to the span S of the horizontal fin 14. In this range, the pitch is larger than the average pitch (the portion inside the propeller in the radial direction of the propeller corresponding to the span S of the horizontal fin 14). The propeller 11 has a strong rotatory flow and an inflow angle of the rotative flow 15 with respect to the horizontal fins 14. Therefore, it is possible to increase the thrust generated by the horizontal fins 14 behind the propeller 11 and exhibit a high energy saving effect.

また、本実施形態に係る推進装置１０によれば、プロペラ１１単体によって得られる推力と水平フィン１４によって発生させる推力とを合わせて、高い推力を船舶１に与えることができる。   Further, according to the propulsion device 10 according to the present embodiment, the thrust obtained by the propeller 11 alone and the thrust generated by the horizontal fin 14 can be combined to give a high thrust to the ship 1.

以上、本発明の好適な実施形態について説明したが、本発明は上記実施形態には限定されず他の様々な実施形態を採ることが可能である。   The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various other embodiments can be adopted.

図１は、本発明の一実施形態に係る船舶の推進装置の側面図である。FIG. 1 is a side view of a marine vessel propulsion apparatus according to an embodiment of the present invention. 図２は、図１のII−II線矢視図である。2 is a view taken along the line II-II in FIG. 図３は、プロペラ半径位置とピッチの関係を示す図である。FIG. 3 is a diagram illustrating the relationship between the propeller radial position and the pitch.

符号の説明Explanation of symbols

１０ 推進装置
１１ プロペラ
１２ 舵
１３ 舵本体
１４ 水平フィン 10 Propulsion device 11 Propeller 12 Rudder 13 Rudder body 14 Horizontal fin

Claims (1)

プロペラの後方に位置する舵と、該舵の舵本体の両方の側面にそれぞれ設けられ、上記プロペラの回転によって生じる回転流を受けて推力を発生させる水平フィンとを備え、該水平フィンは、プロペラ半径よりも短いスパンを有し、上記プロペラは、上記水平フィンのスパンに相当するプロペラ半径方向位置よりもプロペラ半径方向内側の部分のピッチが平均ピッチよりも大きくなるように形成されたことを特徴とする船舶の推進装置。   A rudder located behind the propeller, and horizontal fins provided on both side surfaces of the rudder main body of the rudder and generating thrust by receiving the rotational flow generated by the rotation of the propeller, the horizontal fins comprising: The propeller has a shorter span than the radius, and the propeller is formed such that the pitch of the portion inside the propeller in the radial direction from the radial position of the propeller corresponding to the span of the horizontal fin is larger than the average pitch. A ship propulsion device.
JP2008268647A 2008-10-17 2008-10-17 Propulsion device for marine vessel Pending JP2010095181A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5230852B1 (en) * 2011-07-26 2013-07-10 独立行政法人海上技術安全研究所 Small ducted propeller and ship
WO2014115567A1 (en) 2013-01-25 2014-07-31 独立行政法人海上技術安全研究所 Ship with small duct and method for assessing application of small duct on ship
CN111907683A (en) * 2019-05-10 2020-11-10 三菱重工业株式会社 Rudder and ship provided with same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002104284A (en) * 2000-09-28 2002-04-10 Mitsui O S K Lines Ltd Propeller of ship having hub eddy eliminating device
JP2005145397A (en) * 2003-11-20 2005-06-09 Imabari Shipbuilding Co Ltd Fin device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002104284A (en) * 2000-09-28 2002-04-10 Mitsui O S K Lines Ltd Propeller of ship having hub eddy eliminating device
JP2005145397A (en) * 2003-11-20 2005-06-09 Imabari Shipbuilding Co Ltd Fin device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5230852B1 (en) * 2011-07-26 2013-07-10 独立行政法人海上技術安全研究所 Small ducted propeller and ship
WO2014115567A1 (en) 2013-01-25 2014-07-31 独立行政法人海上技術安全研究所 Ship with small duct and method for assessing application of small duct on ship
KR20150110594A (en) 2013-01-25 2015-10-02 내셔널 매리타임 리서치 인스티튜트 Ship with small duct and method for assessing application of small duct on ship
CN104995087A (en) * 2013-01-25 2015-10-21 独立行政法人海上技术安全研究所 Ship with small duct and method for assessing application of small duct on ship
JPWO2014115567A1 (en) * 2013-01-25 2017-01-26 国立研究開発法人 海上・港湾・航空技術研究所 Ships with small ducts and methods for judging the application of small ducts to ships
JP2018165152A (en) * 2013-01-25 2018-10-25 国立研究開発法人 海上・港湾・航空技術研究所 Vessel with compact size duct and determination method for application of compact size duct to vessel
JP2020203677A (en) * 2013-01-25 2020-12-24 国立研究開発法人 海上・港湾・航空技術研究所 Vessel with small type duct
JP7084053B2 (en) 2013-01-25 2022-06-14 国立研究開発法人 海上・港湾・航空技術研究所 Vessel with small duct
CN111907683A (en) * 2019-05-10 2020-11-10 三菱重工业株式会社 Rudder and ship provided with same

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