JPS62283097A - Water intake structure for vessel's screw - Google Patents
Water intake structure for vessel's screwInfo
- Publication number
- JPS62283097A JPS62283097A JP61124665A JP12466586A JPS62283097A JP S62283097 A JPS62283097 A JP S62283097A JP 61124665 A JP61124665 A JP 61124665A JP 12466586 A JP12466586 A JP 12466586A JP S62283097 A JPS62283097 A JP S62283097A
- Authority
- JP
- Japan
- Prior art keywords
- water
- water intake
- nose cone
- casing
- intake passage
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 172
- 239000008400 supply water Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
- F01P3/202—Cooling circuits not specific to a single part of engine or machine for outboard marine engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for outboard marine engines
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は船舶推進機の水取入構造に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a water intake structure for a marine vessel propulsion device.
［従来の技術］
船内外機、船外機等の船舶推進機には、推進ケーシング
に、プロペラ軸を収容して側方に膨出するプロペラ軸収
容部を形成するとともに、推進ケーシングの側面に、水
ポンプへのり水口を備え、かつ推進ケーシングの前面に
プロペラ軸収容部の周囲に対する水流を整えるノーズコ
ーンを装着してなるものがある。[Prior Art] In a marine propulsion device such as an inboard/outboard motor or an outboard motor, a propeller shaft accommodating portion that accommodates a propeller shaft and bulges out laterally is formed in the propulsion casing. Some propellers have a water inlet to the water pump and a nose cone attached to the front of the propulsion casing to adjust the water flow around the propeller shaft housing.
上記水ポンプは、吸水口から吸込んだ外水を機関に向け
て圧送し、該外水を機関の水冷のために用いることを可
能としている。The water pump pumps outside water sucked in from the water intake port toward the engine, and makes it possible to use the outside water for cooling the engine.
［発明が解決しようとする問題点］
しかしながら、上記従来の船舶推進機にあっては、船体
が滑走状態で航走する高速航走時に、推進ケーシングに
対する水位が低丁し、推進ケーシングの側面に設けられ
ている木ポンプへの吸水口を安定して水面下に没しつづ
けるのに困難がある。吸水口が水面」−を臨むこととな
る場合には、水ポンプは吸水口からエアをまきこみ、機
関に必要な冷却水を供給することができずに機関運転の
トラブルを招き、また水ポンプを構成しているゴム製イ
ンペラ等を加熱溶融させて破損に至らせる等の不都合が
ある。[Problems to be Solved by the Invention] However, in the above-mentioned conventional ship propulsion system, when the ship is running at high speed in a planing state, the water level relative to the propulsion casing is low, and the water level is low to the side of the propulsion casing. It is difficult to keep the water intake port for the wooden pump stably submerged under water. If the water intake port faces the water surface, the water pump will draw in air from the water intake port, making it impossible to supply the necessary cooling water to the engine, leading to problems with engine operation, and causing problems with the water pump. There are inconveniences such as the constituent rubber impellers being heated and melted, leading to damage.
本発明は、簡素な構造により、低速ないし高速のあらゆ
る航走状態下で、推進ケーシングの側面に設けられてい
る水ポンプへの吸水口に安定して外水な供給可能とする
ことを目的とする。An object of the present invention is to enable a stable supply of fresh water to the water intake port of the water pump provided on the side of the propulsion casing under all low-speed to high-speed cruising conditions with a simple structure. do.
［問題点を解決するための手段１
本発明は、推進ケーシングに、プロペラ軸を収容して側
方に膨出するプロペラ軸収容部を形成するとともに、推
進ケーシングの側面に、水ポンプへの吸水口を備え、か
つ推進ケーシングの罰面に、プロペラ軸収容部の周囲に
対する水流を整えるノーズコーンを装着してなる船舶推
進機の水取入構造において、ノーズコーンに水取入路を
設け、水取入路の入口を前記吸水口より下方レベルに設
定し、水取入路の出口を前記吸水口に対向するように配
置するようにしたものである。[Means for Solving the Problems 1] The present invention forms a propeller shaft accommodating portion that accommodates the propeller shaft and bulges laterally in the propulsion casing, and also forms a propeller shaft accommodating portion on the side surface of the propulsion casing for absorbing water to the water pump. In a water intake structure for a marine propulsion device, which has a nose cone installed on the bottom surface of the propulsion casing to adjust the water flow around the propeller shaft accommodating part, a water intake passage is provided in the nose cone and the water intake is The entrance of the water intake passage is set at a level below the water intake port, and the exit of the water intake passage is arranged to face the water intake port.
［作用］
本発明は、推進ケーシングに装着されるノーズコーンに
水取入路を形成するものであり、例えば推進ケーシング
に水取入路を穿設するような構造に比して、簡素な構造
によって水取入路を形成可能である。また、水取入路の
入口は、推進ケーシングに設けられている吸水口より下
方レベルに設定されるため、高速航走時に推進ケーシン
グに対する水位が低下して吸水口が水面上ｒζ１むこと
となる場合にも、水取入路の入口は依然として水面下に
あって外水を導入可能とする。[Function] The present invention forms a water intake passage in the nose cone attached to the propulsion casing, and has a simpler structure than, for example, a structure in which a water intake passage is bored in the propulsion casing. It is possible to form a water intake channel by In addition, since the entrance of the water intake passage is set at a lower level than the water intake provided in the propulsion casing, the water level relative to the propulsion casing decreases during high-speed cruising, and the water intake becomes rζ1 above the water surface. In this case, the entrance of the water intake channel is still below the water surface to allow outside water to be introduced.
すなわち、本発明は簡素な構造により水取入路を形成し
、低速ないし高速のあらゆる航走状態下で常に水面下に
ある水取入路の入口から外水な導入し、該外水を水取入
路の出口に対向して位置する、水ポンプへの吸水口に安
定して供給可能である。That is, the present invention forms a water intake passage with a simple structure, introduces outside water from the entrance of the water intake passage that is always below the water surface under all sailing conditions from low speed to high speed, and drains the outside water. It is possible to stably supply water to the water inlet to the water pump located opposite the outlet of the intake channel.
［実施例］
第１図は本発明の第１実施例が適用されてなる船内外機
の要部を破断して示す側面図、第２図は第１図の要部を
示す側面図、第３図は第２図の■−■線に沿う断面図、
第４図は第１図のノーズコーンを取出して示す断面図、
第５図は第４図のノーズコーンを示す端面図、第６図（
Ａ）〜（Ｄ）は第４図のＡ−Ａ線〜Ｄ−Ｄ線に沿う半断
面図である。[Embodiment] Fig. 1 is a side view with a cutaway showing the main parts of an inboard/outboard motor to which the first embodiment of the present invention is applied, and Fig. 2 is a side view showing the main parts of Fig. 1; Figure 3 is a cross-sectional view along the line ■-■ in Figure 2;
FIG. 4 is a sectional view showing the nose cone of FIG. 1 taken out;
Figure 5 is an end view showing the nose cone in Figure 4, Figure 6 (
A) to (D) are half sectional views taken along lines A-A to D-D in FIG. 4.
船内外機１０は第１図に示すように、船体ｌｌに固定さ
れるトランサムブラケット１２にチルト軸１３を介して
スイベルブラケッ）１４を傾動可能に支持し、スイベル
ブラケッ）１４の筒部１５に不図示の転舵軸を介して推
進ケーシング１６を転舵可能に支持している。As shown in FIG. 1, the inboard/outboard motor 10 has a swivel bracket (14) tiltably supported on a transom bracket (12) fixed to the hull (11) via a tilt shaft (13). The propulsion casing 16 is supported so as to be steerable via the illustrated steered shaft.
船体１１の内部には機関１７が設置されている。機関１
７の出力は、ケーシング１６の内部に設けられている不
図示の変速装置、推進軸１８、ギア１９．２０、プロッ
ペラ軸２１を経てプロペラ２２に伝達される。An engine 17 is installed inside the hull 11. Engine 1
7 is transmitted to the propeller 22 via a transmission (not shown) provided inside the casing 16, a propulsion shaft 18, gears 19, 20, and a propeller shaft 21.
船内外機ｌＯのケーシング１６は、その下部に、プロペ
ラ軸２１、ギア１９．２０を収容して側方に膨出するプ
ロペラ軸収容部（トーピード）２３を形成している。The casing 16 of the inboard/outboard motor IO has a propeller shaft accommodating portion (torpedo) 23 formed in its lower part that accommodates a propeller shaft 21 and gears 19, 20 and bulges laterally.
また、船内外機ｌＯのケーシング１６は第２図、第３図
に示すように、プロペラ軸収容部２３の上方寄り側面に
、水ポンプ２４への木取入具２５を備えている。木取入
具２５は、ケーシング１６に取付けられる取付平面部１
０１、取付平面部ｌｏｔから立上がって給水口２５Ａを
形成する立壁部１０２を備えている。水ポンプ２４は、
吸水路２６を介して木取入具２５の吸水口２５Ａと連通
ずるとともに、送水路２７を介して機関１７の水ジャケ
ットに連通し、吸水口２５Ａから吸込んだ外水を機関１
７に圧送し、機関１７を水冷可能としている。２５Ｂは
取付けねじである。Further, as shown in FIGS. 2 and 3, the casing 16 of the inboard/outboard motor 10 is provided with a wooden fitting 25 for connecting the water pump 24 to the upper side surface of the propeller shaft accommodating portion 23. The wood installation tool 25 is attached to the mounting plane part 1 which is attached to the casing 16.
01, a standing wall part 102 is provided that rises from the mounting plane part lot and forms a water supply port 25A. The water pump 24 is
It communicates with the water intake port 25A of the wood intake fitting 25 via the suction channel 26, and communicates with the water jacket of the engine 17 via the water supply channel 27, so that the outside water sucked in from the water intake port 25A is transferred to the engine 1.
7, and the engine 17 can be water-cooled. 25B is a mounting screw.
また、船内外機１０は、第２図、第３図に示すように、
ケーシング１６の前面にノーズコーン２８を 接着材を
介して装着している。ノーズコーン２８は、プロペラ軸
収容部２３の周囲に対する水流を整え、ケーシング１６
の側面からの水流のはくり（ブローアウト）を防止して
適正なスラスト力を確保可能とするとともに、直進安定
性を向に回部とする。Further, as shown in FIGS. 2 and 3, the inboard/outboard motor 10 has the following features:
A nose cone 28 is attached to the front surface of the casing 16 via an adhesive. The nose cone 28 adjusts the water flow around the propeller shaft accommodating part 23 and the casing 16
This prevents the flow of water from blowing out from the sides of the engine, ensuring appropriate thrust force, and improving straight-line stability.
なお、この実施例においては、ノーズコーン２８の後端
部２８Ａとケーシング１６の側面とをなだらかにつなぐ
ために該後端部２８Ａの後方のケーシング側面に樹脂製
肉盛部２９を施し、ノーズコーン２８の上端部２８Ｂと
ケーシング１６の側面とをなだらかにつなぐために該上
端部２８Ｂの上方のケーシング側面に樹脂製肉盛部３０
を施している。In this embodiment, in order to smoothly connect the rear end portion 28A of the nose cone 28 and the side surface of the casing 16, a resin build-up portion 29 is provided on the side surface of the casing behind the rear end portion 28A. In order to smoothly connect the upper end 28B of 28 and the side surface of the casing 16, a resin padding portion 30 is provided on the casing side surface above the upper end portion 28B.
is being carried out.
しかして、ノーズコーン２８は第４図ないし第６図に示
すように、その前端部に、前端下面から前端内面に延び
る孔部３１を形成されるとともに、孔部３１が開口する
上記前端内面から後端内面に延びる溝部３２を形成され
ている。ノーズコーン２８はケーシング１６への装着状
態下で、」＝配孔部３１、および溝部３２がケーシング
１６の側面との間に形成する中空部により、水取入路３
３を形成する。水取入路３３の入口３４は、孔部３１の
外方開口端であってノーズコーン２８の前端下面に開口
され、吸水口２５Ａより下方レベルに設定されている。As shown in FIGS. 4 to 6, the nose cone 28 has a hole 31 formed at its front end that extends from the lower surface of the front end to the inner surface of the front end, and extends from the inner surface of the front end into which the hole 31 opens. A groove portion 32 is formed extending on the inner surface of the rear end. When the nose cone 28 is attached to the casing 16, the water intake path 3 is formed by the hollow portion formed between the hole portion 31 and the groove portion 32 and the side surface of the casing 16.
form 3. The inlet 34 of the water intake passage 33 is the outer opening end of the hole 31, is opened at the lower surface of the front end of the nose cone 28, and is set at a lower level than the water intake port 25A.
また、水取入路３３の出口３５は、溝部３２の外方開口
端であって、ノーズコーン２８の後端面に開口され、吸
水口２５Ａに対向するように配置されている。Further, the outlet 35 of the water intake passage 33 is the outer opening end of the groove 32, is opened at the rear end surface of the nose cone 28, and is disposed so as to face the water intake port 25A.
なお、水取入路３３の出口３５と吸水口２５Ａとの間は
、前記肉盛部２９と３０に挟まれる溝状の水案内路３６
とされている。また、第２図番と示すように、出口３５
の開口幅Ｗｌは、吸水口２５Ａの開口幅Ｗ２より大きく
設定され、出口３５から流出する水がエアを巻込むこと
なく吸水口２５Ａに達することを可能としている。Note that between the outlet 35 of the water intake passage 33 and the water intake port 25A, there is a groove-shaped water guide passage 36 sandwiched between the built-up parts 29 and 30.
It is said that Also, as shown in the second figure, exit 35
The opening width Wl is set larger than the opening width W2 of the water intake port 25A, allowing water flowing out from the outlet 35 to reach the water intake port 25A without involving air.
次に、上記第１実施例の作用について説明する。Next, the operation of the first embodiment will be explained.
一ヒ記実施例は、推進ケーシング１６に装着されるノー
ズコーン２８に水取入路３３を形成したものであり、例
えば推進ケーシング１６に水取入路を穿設するような構
造に比゛して、簡素な構造番こよって水取入路３３を形
成可能である。また、水取入路３３の入口３４は、推進
ケーシング１６４と設けられている吸水口２５Ａより下
方レベルに設定されるため、高速航走時に推進ケーシン
グ１６に対する水位が第１図に実線で示す状態から２点
鎖線で示すように低下して吸水口２５Ａが水面上を臨む
こととなる場合にも、水取入路３３の入口３４は依然と
して水面下にあって外水を導入可能とする。In the first embodiment, a water intake passage 33 is formed in the nose cone 28 attached to the propulsion casing 16, and is compared to a structure in which a water intake passage is provided in the propulsion casing 16, for example. Therefore, the water intake passage 33 can be formed with a simple structure. Furthermore, since the inlet 34 of the water intake passage 33 is set at a lower level than the water intake port 25A provided with the propulsion casing 164, the water level relative to the propulsion casing 16 during high-speed cruising is in the state shown by the solid line in FIG. 1. Even when the water intake port 25A is lowered from the water surface as shown by the two-dot chain line and the water intake port 25A faces above the water surface, the inlet 34 of the water intake passage 33 is still below the water surface, allowing outside water to be introduced.
なお、上記第１実施例におけるように水ポンプ２４に連
なる吸水路２６は、プロペラ軸２１等を内蔵しているプ
ロペラ軸収容部２３の内部に設けることが困難であるた
め、吸水口２５Ａは一般にケーシング１６の側面におけ
るプロペラ軸収容部２３の上方寄りに設けられる。この
時、吸水口２５Ａに向けて外水を取入れる水取入路をケ
ーシング１６に穿設し、かつ該水取入路の入口を吸水口
２５Ａより下方に設定するためには、複雑な曲面形状を
したケーシング１６のプロペラ軸収容部２３をこ水取入
路を加工する必要があり、非常な困難を伴なう。しかし
ながら、上記第１実施例によれば、プロペラ軸収容部２
３の周囲に装着されるノーズコーン２８を利用して、前
述のように水取入路３３を容易に形成することが可能で
ある。Note that, as in the first embodiment, it is difficult to provide the suction channel 26 connected to the water pump 24 inside the propeller shaft accommodating portion 23 that houses the propeller shaft 21, etc., so the water suction port 25A is generally It is provided above the propeller shaft accommodating portion 23 on the side surface of the casing 16 . At this time, in order to drill a water intake path in the casing 16 that takes in outside water toward the water intake port 25A, and to set the entrance of the water intake path below the water intake port 25A, a complicated curved surface is required. It is necessary to form a water intake passage in the shaped propeller shaft accommodating portion 23 of the casing 16, which is extremely difficult. However, according to the first embodiment, the propeller shaft housing section 2
The water intake passage 33 can be easily formed as described above by using the nose cone 28 attached around the water inlet 3 .
すなわち、上記実施例は簡素な構造により水取入路３３
を形成し、低速ないし高速のあらゆる航走状態下で常に
水面下にある水取入路３３の入口３４から外水を導入し
、該外水を水取入路３３の出口３５に対向して位置する
。水ポンプ２４への吸水口２５Ａに安定して供給するこ
とが可能である。In other words, in the above embodiment, the water intake passage 33 has a simple structure.
The outside water is introduced from the inlet 34 of the water intake passage 33 which is always under the water surface under all running conditions at low speed or high speed, and the outside water is introduced into the opposite outlet 35 of the water intake passage 33. To position. It is possible to stably supply water to the water intake port 25A to the water pump 24.
また、上記第１実施例にあっては、水取入路３３の入口
３４をノーズコーン２８の前端下面に開口しているから
、外水は航走に伴なう動水圧で円滑に入口３４に押込ま
れ、吸水口２５Ａへの外水の導入をより確実化すること
が可能となる。In addition, in the first embodiment, since the inlet 34 of the water intake passage 33 is opened at the lower surface of the front end of the nose cone 28, the open water can be smoothly flowed into the inlet 34 by the dynamic water pressure associated with sailing. This makes it possible to more reliably introduce outside water into the water intake port 25A.
第７図は本発明の第２実施例の要部を示す側面図、第８
図は第７図の■−■線に沿う断面図である。FIG. 7 is a side view showing the main parts of the second embodiment of the present invention;
The figure is a sectional view taken along the line ■-■ in FIG. 7.
この第２実施例が前記第°ｌ実施例と異なる点は、第１
実施例に用いたノーズコーン２８を変形したノーズコー
ン４０を用いたことである。ノーズコーン４０は、前記
ノーズコーン２８における孔部３１．溝部３２と略同様
な孔部４１、溝部４２を備え、ケーシング１６への装着
状態下で水取入路４３を形成する。また、水取入路４３
の入口４４は、ノーズコーン２８におけると同様にノー
ズコーン４０の前端下面に開口され、吸水口２５Ａより
下方レベルに設定されている。しかして、ノーズコーン
４０は、その上端側の後端部の一部４ＯＡを木取入具２
５に当接する位置まで延設し、溝部４２の後端部を木取
入具２５に向けて延設することにより、溝部４２の外方
開口端である水取入路４３の出口４５を直接的に吸水口
２５Ａに接続している。This second embodiment differs from the first embodiment in that
This is because a nose cone 40 is used which is a modification of the nose cone 28 used in the example. The nose cone 40 has a hole 31 . in the nose cone 28 . It includes a hole 41 and a groove 42 that are substantially similar to the groove 32, and forms a water intake path 43 when attached to the casing 16. Also, water intake road 43
The inlet 44 is opened at the lower surface of the front end of the nose cone 40 similarly to the nose cone 28, and is set at a lower level than the water intake port 25A. Therefore, the nose cone 40 has a part 4OA of the rear end on the upper end side of the nose cone 40.
By extending the rear end of the groove 42 toward the wood intake tool 25, the outlet 45 of the water intake passage 43, which is the outward opening end of the groove 42, can be directly connected. It is connected to the water intake port 25A.
すなわち、この第２実施例によれば、水取入路４３の出
口４５から流出する外水は、外部空間を経ることなく、
直接的に吸水口２５Ａに供給されることとなり、吸水口
２５Ａへのエアの巻込みをより確実に防止することが可
能となる。That is, according to this second embodiment, the outside water flowing out from the outlet 45 of the water intake passage 43 does not pass through the outside space.
Since the air is directly supplied to the water intake port 25A, it is possible to more reliably prevent air from being drawn into the water intake port 25A.
［発明の効果１
以−１；のように、本発明は、推進ケーシングに、プロ
ペラ軸を収容して側方に膨出するプロペラ軸収容部を形
成するとともに、推進ケーシングの側面に、水ポンプへ
の吸水口を備え、かつ推進ケーシングの前面に、プロペ
ラ軸収容部の周囲に対する水流を整えるノーズコーンを
装着してなる船舶推進機の水取入構造において、ノーズ
コーンに水取入路を設け、水取入路の入口を前記吸水口
より下方レベルに設定し、水取入路の出口を前記吸水口
に対向するように配置するようにしたものである。[Advantageous Effects of the Invention 1 As described above-1], the present invention forms a propeller shaft accommodating portion that accommodates the propeller shaft and bulges laterally in the propulsion casing, and also provides a water pump on the side surface of the propulsion casing. In a water intake structure for a marine propulsion device, the nose cone is equipped with a nose cone on the front of the propulsion casing to adjust the water flow around the propeller shaft accommodating part, and a water intake passage is provided in the nose cone. The inlet of the water intake passage is set at a lower level than the water intake port, and the outlet of the water intake passage is arranged to face the water intake port.
したがって、本発明は、推進ケーシングに装着されるノ
ーズコーンに水取入路を形成するものであり１例えば推
進ケーシングに水取入路を穿設するような構造に比して
、簡素な構造によって水取入路を形成可能である。また
、水取入路の入口は、推進ケーシングに設けられている
吸水口より下方レベルに設定されるため、高速航走時に
推進ケーシングに対する水位が低下して吸水口が水面上
を臨むこととなる場合にも、水取入路の入口は依然とし
て水面下にあって外水を導入可能とする。Therefore, the present invention forms a water intake passage in the nose cone attached to the propulsion casing, and has a simpler structure than, for example, a structure in which a water intake passage is bored in the propulsion casing. A water intake channel can be formed. In addition, since the entrance of the water intake channel is set at a lower level than the water intake provided in the propulsion casing, the water level relative to the propulsion casing decreases during high-speed cruising, and the water intake faces above the water surface. In this case, the entrance of the water intake channel is still below the water surface to allow outside water to be introduced.
すなわち、本発明は簡素な構造により水取入路を形成し
、低速ないし高速のあらゆる航走状態下で常に水面下に
ある水取入′路の入口から外水を導入し、該外水を水取
入路の出口に対向して位置する。水ポンプへの吸水口に
安定して供給可能である。That is, the present invention forms a water intake passage with a simple structure, introduces outside water from the entrance of the water intake passage that is always under the water surface under all sailing conditions from low speed to high speed, and drains the outside water. Located opposite the exit of the water intake. It is possible to stably supply water to the water intake port of the water pump.
第１図は本発明の第１実施例が適用されてなる船内外機
の要部を破断して示す側面図、第２図は第１図の要部を
示す側面図、第３図は第２図の■−■線に沿う断面図、
第４図は第１図のノーズコーンを取出して示す断面図、
第５図は第４図のノーズコーンを示す端面図、第６図（
Ａ）〜（Ｄ）は第４図のＡ−Ａ線〜Ｄ−Ｄ線のに沿う半
断面図、第７図は本発明の第２実施例の要部を示す側面
図、第８図は第７図の■−■線に沿う断面図である。
１０・・・船内外機、１６・・・推進ケーシング、２１
・・・プロペラ軸、２３・・・プロペラ軸収容部、２４
・・・水ポンプ、２５Ａ・・・吸水口、２８・・・ノー
ズコーン、３３・・・水取入路、３４・・・入口、３５
・・・出口、４０・・・ノーズコーン、４３・・・水取
入路、４４・・・入口、４５・・・出口。
代理人 弁理士 塩 川 修 治
第５図
第６図
（Ｄ）FIG. 1 is a side view with a cutaway showing the main parts of an inboard/outboard motor to which the first embodiment of the present invention is applied, FIG. 2 is a side view showing the main parts of FIG. 1, and FIG. A cross-sectional view along the line ■-■ in Figure 2,
FIG. 4 is a sectional view showing the nose cone of FIG. 1 taken out;
Figure 5 is an end view showing the nose cone in Figure 4, Figure 6 (
A) to (D) are half-sectional views taken along lines A-A to D-D in FIG. 4, FIG. 7 is a side view showing the main parts of the second embodiment of the present invention, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. 7. FIG. 10... Inboard/outboard motor, 16... Propulsion casing, 21
... Propeller shaft, 23 ... Propeller shaft housing part, 24
...Water pump, 25A...Water intake, 28...Nose cone, 33...Water intake path, 34...Inlet, 35
...Exit, 40...Nose cone, 43...Water intake path, 44...Inlet, 45...Exit. Agent Patent Attorney Osamu Shiokawa Figure 5 Figure 6 (D)
Claims (2)
膨出するプロペラ軸収容部を形成するとともに、推進ケ
ーシングの側面に、水ポンプへの吸水口を備え、かつ推
進ケーシングの前面に、プロペラ軸収容部の周囲に対す
る水流を整えるノーズコーンを装着してなる船舶推進機
の水取入構造において、ノーズコーンに水取入路を設け
、水取入路の入口を前記吸水口より下方レベルに設定し
、水取入路の出口を前記吸水口に対向するように配置し
たことを特徴とする船舶推進機の水取入構造。(1) The propulsion casing is provided with a propeller shaft accommodating portion that accommodates the propeller shaft and bulges out to the side, and a water intake port for the water pump is provided on the side surface of the propulsion casing, and on the front surface of the propulsion casing, In a water intake structure for a marine propulsion device that is equipped with a nose cone that adjusts the water flow around the propeller shaft accommodating part, a water intake passage is provided in the nose cone, and the entrance of the water intake passage is set at a level below the water intake port. A water intake structure for a marine vessel propulsion device, characterized in that the outlet of the water intake passage is arranged to face the water intake port.
設けられる水取入路の少なくとも一部は、ノーズコーン
が装着される推進ケーシングの側面との間に形成される
船舶推進機の水取入構造。(2) In claim 1, at least a part of the water intake passage provided in the nose cone is a water intake passage of the marine propulsion machine formed between the nose cone and the side surface of the propulsion casing to which the nose cone is attached. Input structure.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61124665A JPS62283097A (en) | 1986-05-31 | 1986-05-31 | Water intake structure for vessel's screw |
| DE8787106947T DE3765468D1 (en) | 1986-05-31 | 1987-05-13 | WATER INLET DEVICE FOR SHIP DRIVE SYSTEM. |
| DE198787106947T DE250804T1 (en) | 1986-05-31 | 1987-05-13 | WATER INLET DEVICE FOR SHIP DRIVE SYSTEM. |
| EP87106947A EP0250804B1 (en) | 1986-05-31 | 1987-05-13 | Water-intake construction for marine propulsion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61124665A JPS62283097A (en) | 1986-05-31 | 1986-05-31 | Water intake structure for vessel's screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62283097A true JPS62283097A (en) | 1987-12-08 |
| JPH0555355B2 JPH0555355B2 (en) | 1993-08-16 |
Family
ID=14891021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61124665A Granted JPS62283097A (en) | 1986-05-31 | 1986-05-31 | Water intake structure for vessel's screw |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0250804B1 (en) |
| JP (1) | JPS62283097A (en) |
| DE (2) | DE250804T1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02124392A (en) * | 1988-10-31 | 1990-05-11 | Suzuki Motor Co Ltd | Propeller device of thrusting machine for vessel |
| US5078630A (en) * | 1988-10-28 | 1992-01-07 | Nissan Motor Co., Ltd. | Engine cooling system induction arrangement for marine inboard-outboard and outboard engines |
| JP2013107537A (en) * | 2011-11-22 | 2013-06-06 | Suzuki Motor Corp | Cooling water passage structure of outboard motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106428501A (en) * | 2016-10-31 | 2017-02-22 | 中国舰船研究设计中心 | Marine mainframe auxiliary cooling water internal circulation system and cooling method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1762957A (en) * | 1927-12-17 | 1930-06-10 | Outboard Motors Corp | Outboard motor |
| US2616386A (en) * | 1948-07-29 | 1952-11-04 | Kiekhaefer Elmer Carl | Water cooling system for outboard motors |
| US4636175A (en) * | 1985-11-07 | 1987-01-13 | Brunswick Corporation | Water inlet for outboard propulsion unit |
-
1986
- 1986-05-31 JP JP61124665A patent/JPS62283097A/en active Granted
-
1987
- 1987-05-13 DE DE198787106947T patent/DE250804T1/en active Pending
- 1987-05-13 DE DE8787106947T patent/DE3765468D1/en not_active Expired - Fee Related
- 1987-05-13 EP EP87106947A patent/EP0250804B1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5078630A (en) * | 1988-10-28 | 1992-01-07 | Nissan Motor Co., Ltd. | Engine cooling system induction arrangement for marine inboard-outboard and outboard engines |
| JPH02124392A (en) * | 1988-10-31 | 1990-05-11 | Suzuki Motor Co Ltd | Propeller device of thrusting machine for vessel |
| JP2013107537A (en) * | 2011-11-22 | 2013-06-06 | Suzuki Motor Corp | Cooling water passage structure of outboard motor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0250804B1 (en) | 1990-10-10 |
| JPH0555355B2 (en) | 1993-08-16 |
| DE250804T1 (en) | 1988-09-01 |
| EP0250804A1 (en) | 1988-01-07 |
| DE3765468D1 (en) | 1990-11-15 |
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