JPS5855116Y2 - marine nozzle propeller - Google Patents
marine nozzle propellerInfo
- Publication number
- JPS5855116Y2 JPS5855116Y2 JP5039079U JP5039079U JPS5855116Y2 JP S5855116 Y2 JPS5855116 Y2 JP S5855116Y2 JP 5039079 U JP5039079 U JP 5039079U JP 5039079 U JP5039079 U JP 5039079U JP S5855116 Y2 JPS5855116 Y2 JP S5855116Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- propeller
- marine
- rudder
- cylindrical
- 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.)
- Expired
Links
Landscapes
- Nozzles (AREA)
Description
【考案の詳細な説明】 本考案は、舶用ノズルプロペラの改良に関する。[Detailed explanation of the idea] The present invention relates to improvements in marine nozzle propellers.
第１図及び第２図に従来の舶用ノズルプロペラを示す。A conventional marine nozzle propeller is shown in FIGS. 1 and 2.
図において、０１は船体の後部０４に設けられたプロペ
ラ、０２はプロペラ０１の周囲に設けられた円筒型ノズ
ル、０３はプロペラ０１及び円筒型ノズル０２の後方に
設けられた舵である。In the figure, 01 is a propeller provided at the rear part 04 of the hull, 02 is a cylindrical nozzle provided around the propeller 01, and 03 is a rudder provided behind the propeller 01 and the cylindrical nozzle 02.
一般にノズルプロペラにおいては、プロペラの荷重度の
高いときはノズル０２の効果によってプロペラ０１へ流
入する水量が大となるためスラストが増大するとともに
、ノズル０２自身もスラストを発＃、ｌ−で仝汰ンして
一菩通のノズルのないプロペラよりも推進性能が良い。Generally, in a nozzle propeller, when the propeller is highly loaded, the effect of nozzle 02 increases the amount of water flowing into propeller 01, increasing the thrust, and the nozzle 02 itself also generates thrust, which is designated by l-. The propeller has better propulsion performance than a propeller without a nozzle.
しかしノズル０２の後部が舵０３に最も近づくノズル０
２の後部最上部Ａ及び後部最下部Ｂにおいて、舵０３に
よる水のせきとめ現象が生じ、この部分の流速低下によ
りノズルプロペラの推進性能が低下するという欠点があ
った。However, nozzle 0 has the rear part of nozzle 02 closest to rudder 03.
At the rear top A and the rear bottom B of No. 2, water is dammed up by the rudder 03, and the flow velocity decreases in these parts, resulting in a decrease in the propulsion performance of the nozzle propeller.
この対処策として舵を後方へ移動させることも考えられ
るが、それは船の長さを長くシ、経済的に不利である。One possible solution to this problem would be to move the rudder aft, but this would lengthen the ship and would be economically disadvantageous.
本考案は、このような問題点に対処するためのもので、
上記Ａ部およびＢ部における流速低下を防ぎ、ノズルプ
ロペラの推進性能を向上させる目的で提案されたもので
、プロペラの周囲に円筒型ノズルを備え、その後方に舵
が設けられている舶用ノズルプロペラにおいて、舵に最
も近接した前記円筒型ノズルの後部最上部及び後部最下
部のノズル出口角を他の部分のノズル出口角より大きく
構成したことを特長とする舶用ノズルプロペラを提供す
るよ
本考案装置によれば、舵に最も近接した円筒型ノズルの
後部最上部及び後部最下部のノズル出口角を他の部分の
出口角より大きく構成したことにより、従来上記部分で
舵によってせき止められていた水の流れが円滑になり、
流速低下を生じなくなるため、ノズルプロペラを用いた
ときの推進性能を従来のものに比べて良好に維持するこ
とができる。This invention is intended to address these problems.
This marine nozzle propeller was proposed for the purpose of preventing the flow velocity from decreasing in the A and B sections and improving the propulsion performance of the nozzle propeller.It is a marine nozzle propeller that is equipped with a cylindrical nozzle around the propeller and a rudder behind it. The present invention provides a marine nozzle propeller characterized in that the nozzle exit angles at the uppermost and rearmost portions of the cylindrical nozzle closest to the rudder are larger than the nozzle exit angles at other portions. According to the above, by configuring the nozzle exit angles at the top and bottom of the rear of the cylindrical nozzle closest to the rudder to be larger than the exit angles at other parts, the water that was conventionally dammed up by the rudder at the above-mentioned parts is reduced. The flow becomes smoother,
Since no drop in flow velocity occurs, the propulsion performance when using a nozzle propeller can be maintained better than that of conventional propellers.
なおノズル出口角とは、ノズル出口辺のノズル長手軸に
対する傾きをいう。Note that the nozzle exit angle refers to the inclination of the nozzle exit side with respect to the nozzle longitudinal axis.
次に本考案装置の一実施例を図面に基づいて説明する。Next, one embodiment of the device of the present invention will be described based on the drawings.
第３図及び第４図において、１は船体の後部４に設けら
れたプロペラ、２はプロペラ１の周囲に設けられた円筒
型ノズル、３はプロペラ１及び円筒型ノズル２の後方に
設けられた舵である。In Figures 3 and 4, 1 is a propeller provided at the rear part 4 of the hull, 2 is a cylindrical nozzle provided around the propeller 1, and 3 is provided behind the propeller 1 and cylindrical nozzle 2. It is the rudder.
本考案のノズル２は、舵３に最も近接した後部最上部Ａ
及び後部最下部Ｂのノズル出口角が他の部分の出口角よ
り大きく構成されている。The nozzle 2 of the present invention is located at the rear top A closest to the rudder 3.
Also, the nozzle exit angle at the rear lowest part B is configured to be larger than the exit angle at other parts.
なお２点鎖線は従来のノズル後部形状を示す。Note that the two-dot chain line indicates the shape of the rear part of the conventional nozzle.
このように本ノズルプロペラにおいては、上記Ａ部及び
Ｂ部のノズル出口角を他の部分のノズル出口角より大き
くしたことにより、舵による流れのせき止め現象を軽減
し、ノズルプロペラを用いた場合の推進性能を従来のも
のに比べて良好に維持することができる。In this way, in this nozzle propeller, the nozzle exit angles of the above-mentioned parts A and B are made larger than the nozzle exit angles of the other parts, thereby reducing the flow damming phenomenon caused by the rudder, and making it possible to reduce the flow damming phenomenon caused by the rudder. Propulsion performance can be maintained better than conventional ones.
第１図は従来のノズルプロペラを装備した船体後部の縦
断立面図、第２図は第１図のＩＩ −ＩＩ線に沿う円筒
型ノズルの横断面図、第３図は本考案のノズルプロペラ
を装備した船体後部の縦断立面図、第４図は第３図のＩ
Ｖ−ＩＶ線に沿う円筒形ノズルの横断面図である。
０１．１・・・・・・プロペラ、０２，２・・・・・・
円筒型ノズル、０３゜３・・・・・・舵、０４，４・・
・・・・船体後部、Ａ・・・・・・円筒型ノズルの後部
最上部、Ｂ・・・・・・円筒型ノズルの後部最下部。Figure 1 is a longitudinal cross-sectional elevational view of the rear part of a ship equipped with a conventional nozzle propeller, Figure 2 is a cross-sectional view of the cylindrical nozzle taken along line II-II in Figure 1, and Figure 3 is a nozzle propeller of the present invention. Figure 4 is a vertical elevational view of the aft part of the hull equipped with
FIG. 3 is a cross-sectional view of the cylindrical nozzle along the line V-IV. 01.1... Propeller, 02,2...
Cylindrical nozzle, 03°3... Rudder, 04,4...
... Rear part of the hull, A ... Rear top of the cylindrical nozzle, B ... Rear bottom of the cylindrical nozzle.
Claims (1)
設けられている舶用ノズルプロペラにおいて、舵に最も
近接した前記円筒型ノズルの後部最上部及び後部最下部
のノズル出口角を他の部分のノズル出口角より大きく構
成したことを特長とする舶用ノズルプロペラ。In a marine nozzle propeller that is equipped with a cylindrical nozzle around the propeller and a rudder behind it, the nozzle exit angles at the top and rear bottom of the cylindrical nozzle closest to the rudder are set as compared to other parts. A marine nozzle propeller characterized by a configuration that is larger than the nozzle exit angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5039079U JPS5855116Y2 (en) | 1979-04-16 | 1979-04-16 | marine nozzle propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5039079U JPS5855116Y2 (en) | 1979-04-16 | 1979-04-16 | marine nozzle propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55149499U JPS55149499U (en) | 1980-10-28 |
| JPS5855116Y2 true JPS5855116Y2 (en) | 1983-12-16 |
Family
ID=28937772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5039079U Expired JPS5855116Y2 (en) | 1979-04-16 | 1979-04-16 | marine nozzle propeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855116Y2 (en) |
-
1979
- 1979-04-16 JP JP5039079U patent/JPS5855116Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55149499U (en) | 1980-10-28 |
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