JPH08229369A - Microbubble jetting device - Google Patents
Microbubble jetting deviceInfo
- Publication number
- JPH08229369A JPH08229369A JP7037424A JP3742495A JPH08229369A JP H08229369 A JPH08229369 A JP H08229369A JP 7037424 A JP7037424 A JP 7037424A JP 3742495 A JP3742495 A JP 3742495A JP H08229369 A JPH08229369 A JP H08229369A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- water mixed
- bubble
- mixed fluid
- jetting
- 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.)
- Withdrawn
Links
Classifications
-
- 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
Landscapes
- Nozzles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、気泡水混合流体を利用
して航走体の摩擦を低減する際に使用されるマイクロバ
ブルの噴出装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jetting device for microbubbles which is used when reducing the friction of a vehicle by utilizing a fluid mixture of bubbles and water.
【０００２】[0002]
【従来の技術】船舶等の摩擦低減を図るために、船体の
表面に気泡または空気層を介在させる方法が提案されて
いる。気泡を水中に噴出させる技術として、（１）特開
昭５０−８３９９２号、（２）特開昭５３−１３６２８
９号、（３）特開昭６０−１３９５８６号、（４）特開
昭６１−７１２９０号、（５）実開昭６１−３９６９１
号、（６）実開昭６１−１２８１８５号が提案されてい
る。2. Description of the Related Art In order to reduce the friction of a ship or the like, a method has been proposed in which a bubble or an air layer is interposed on the surface of the hull. Techniques for ejecting bubbles into water include (1) JP-A-50-83992 and (2) JP-A-53-13628.
No. 9, (3) JP-A-60-139586, (4) JP-A-61-71290, (5) Jitsukai 61-39691.
No. 6, (6) Japanese Utility Model Publication No. 61-128185 is proposed.
【０００３】そして、これらの技術では、気泡を噴出さ
せる方法として、空気ポンプで発生させた加圧空気を複
数の穴や多孔板から水中に噴出させるようにしている。In these techniques, as a method of ejecting bubbles, pressurized air generated by an air pump is ejected into water through a plurality of holes or perforated plates.
【０００４】[0004]
【発明が解決しようとする課題】しかし、加圧空気のみ
を複数の穴から噴出する方法であると、微細な気泡を得
ることが困難で、気泡が浮力に基づく上昇力によって船
体から離れ易く、摩擦抵抗低減範囲が小さくなり、多孔
質板から微細な気泡を吹き出す技術では、多孔質板での
気泡吹き出し時における圧力損失に基づくエネルギ消費
が大きくなって、摩擦抵抗低減によるエネルギ節約より
も、気泡吹き出しのためのエネルギ消費の方が多くなっ
て、実用性が損われてしまう等の難点があり、前述した
（１）ないし（６）の技術は、いずれも実用化に至って
いないのが実情である。However, with the method of ejecting only pressurized air from a plurality of holes, it is difficult to obtain fine bubbles, and the bubbles easily separate from the hull due to the lifting force based on buoyancy. In the technology that reduces the frictional resistance reduction range and blows out fine bubbles from the porous plate, the energy consumption based on the pressure loss when bubbles are blown out on the porous plate becomes large, and the energy saving by reducing the frictional resistance is more important than the energy saving. There is a drawback that the energy consumption for blowing out is increased and the practicality is impaired. In reality, none of the above-mentioned technologies (1) to (6) have been put to practical use. is there.
【０００５】本発明は、これらの事情に鑑みてなされた
もので、以下の目的を有するものである。 気泡水混合流体の静圧による噴出方向と動的エネルギ
による噴出方向との整合性を高めること。 気泡水混合流体の誘導性を高め、移送および噴出時の
エネルギ損失を低減すること。 気泡水混合流体を航走体の表面に沿って効果的に送り
込むこと。The present invention has been made in view of these circumstances, and has the following objects. To increase the consistency between the jetting direction of a bubbling water mixed fluid due to static pressure and the jetting direction due to dynamic energy. To increase the inductivity of the bubbly water mixed fluid and reduce the energy loss during transfer and ejection. Effectively pumping bubbly water mixed fluids along the surface of the spacecraft.
【０００６】[0006]
【課題を解決するための手段】本発明に係るマイクロバ
ブルの噴出装置では、船殻の外側に支持され気泡水混合
流体を移送する流路構成体と、該流路構成体に接続状態
に配され気泡水混合流体を噴出させる流体噴出口と、該
流体噴出口の後縁部の内方位置に前方に延長状態に一体
に配され気泡水混合流体の噴出方向を斜め後方に誘導す
る流体誘導板とを具備する技術が採用される。流体誘導
板は、ステンレス鋼板等によって流路構成体の外壁を構
成するとともに、外壁の一部を打ち抜き加工して流体噴
出口を明け、該流体噴出口の後縁部に舌片を残す等の技
術により配される。また、マイクロバブルの噴出装置の
他の手段として、船殻に配され気泡水混合流体を船殻の
外側の斜め後方に噴出させる流体噴出口と、該流体噴出
口の後縁部に後方に開口を広げた状態に形成され噴出す
る気泡水混合流体を船殻の外表面に誘導する凹部とを具
備する技術が採用される。SUMMARY OF THE INVENTION In a microbubble jetting device according to the present invention, there is provided a flow path structure which is supported on the outside of a hull and which transfers a bubbling water mixed fluid, and a flow path structure which is connected to the flow path structure. And a fluid guide for ejecting the bubble-water mixed fluid, and a fluid guide for integrally injecting the jet direction of the bubble-water mixed fluid obliquely rearward at an inward position of the trailing edge of the fluid ejector. A technique including a plate is adopted. The fluid guide plate constitutes the outer wall of the flow path forming body with a stainless steel plate or the like, and a part of the outer wall is punched to open the fluid ejection port, leaving a tongue piece at the trailing edge of the fluid ejection port, etc. Arranged by technology. Further, as another means of the micro-bubble ejection device, there are a fluid ejection port which is arranged on the hull and ejects the bubble-water mixed fluid obliquely rearward on the outer side of the hull, and a rear opening at the rear edge of the fluid ejection port. And a recess for guiding the jetted bubbly water mixed fluid to the outer surface of the hull.
【０００７】[0007]
【作用】気泡水混合流体発生手段で発生させた気泡水混
合流体は、流路構成体によって船殻に沿って各所に移送
される。この気泡水混合流体は、静圧および自身の運動
エネルギを利用して流体噴出口から船体の後方に向けて
噴出される。気泡水混合流体が流体噴出口から噴出され
ると、没水状態の没水表面に沿った状態に気泡が介在し
て、航走時の摩擦の低減効果が生じるとともに、気泡水
混合流体の噴出方向と反対方向への駆動力が発生し、船
体の前方への駆動力となる。気泡水混合流体は、流体誘
導板によって流体噴出口へと導かれ、運動エネルギによ
る気泡水混合流体の噴出方向は、斜め後方に設定され
る。また、流体誘導板先端と流体噴出口の前縁部との間
の開口面に基づく静圧による気泡水混合流体の噴出方向
は、没水表面にほぼ平行に設定される。したがって、気
泡水混合流体の噴出方向は、両者の噴出方向のベクトル
和によって後方または斜め後方に設定される。流体噴出
口の後縁部に凹部が形成されていると、凹部に誘導され
た気泡水混合流体は、流体噴出口の後縁から没水表面へ
と導かれる。つまり、凹部に接続する流路先端の開口面
に基づく静圧による気泡水混合流体の噴出方向と、気泡
水混合流体の運動エネルギに基づく噴出方向とが、ほぼ
一致して後方または斜め後方に噴出方向が設定される。The bubbly water mixed fluid generated by the bubbly water mixed fluid generating means is transferred to various places along the hull by the flow passage structure. This bubbly water mixed fluid is jetted toward the rear of the hull from the fluid jet port by utilizing static pressure and its own kinetic energy. When the bubbly water mixed fluid is ejected from the fluid ejection port, the bubbles are present along the submerged surface of the submerged state, and the effect of reducing friction during cruising is produced, and the ejection of the bubbly water mixed fluid is also produced. Driving force is generated in the opposite direction to the forward direction of the hull. The bubbly water mixed fluid is guided to the fluid ejection port by the fluid guide plate, and the ejection direction of the bubbly water mixed fluid due to kinetic energy is set obliquely rearward. Further, the jetting direction of the bubbly water mixed fluid due to the static pressure based on the opening surface between the tip of the fluid guide plate and the front edge portion of the fluid jet outlet is set substantially parallel to the submerged surface. Therefore, the ejection direction of the bubbly water mixed fluid is set to the rear or the oblique rear depending on the vector sum of the ejection directions of the both. When the recess is formed at the trailing edge of the fluid ejection port, the bubbly water mixed fluid guided to the recess is guided from the trailing edge of the fluid ejection port to the submerged surface. That is, the jetting direction of the bubbly water mixed fluid due to the static pressure based on the opening surface at the tip of the flow path connected to the concave portion and the jetting direction based on the kinetic energy of the bubbling water mixed fluid are substantially coincident and jetted backward or obliquely backward. The direction is set.
【０００８】[0008]
【実施例】以下、本発明に係わるマイクロバブルの噴出
装置の実施例について、図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a microbubble ejection device according to the present invention will be described below with reference to the drawings.
【０００９】〔第１実施例〕図１および図２は、本発明
に係わるマイクロバブルの噴出装置の第１実施例を示す
もので、符号Ａはマイクロバブルの噴出装置、Ｙは摩擦
低減航走体、Ｅは摩擦低減対象範囲（吹出し領域）、１
は船体、２は気泡水混合流体発生手段、３は流体噴出
口、４は没水表面（船体表面）、５は推進器、６は舵、
７は空気取入れ口、８は吸水口を示している。[First Embodiment] FIGS. 1 and 2 show a first embodiment of a micro-bubble jetting device according to the present invention. Reference A is a micro-bubble jetting device and Y is a friction-reducing cruise. Body, E is the friction reduction target range (blowing area), 1
Is a hull, 2 is a bubble-water mixed fluid generating means, 3 is a fluid ejection port, 4 is a submerged surface (ship surface), 5 is a propeller, 6 is a rudder,
Reference numeral 7 indicates an air intake port, and 8 indicates a water intake port.
【００１０】摩擦低減航走体Ｙにおける船体１の適宜位
置には、後述する気泡水混合流体発生手段２が搭載さ
れ、該気泡水混合流体発生手段２は、空気取入れ口７お
よび吸水口８に接続されて空気と水とを所望の比率で供
給し、噴出装置Ａの流体噴出口３から流体を噴出させる
前に気泡水混合流体を生成する機能を有するものが適用
される。At a suitable position of the hull 1 in the friction-reducing vehicle Y, a bubble-water mixed fluid generating means 2 to be described later is mounted, and the bubble-water mixed fluid generating means 2 has an air intake port 7 and a water intake port 8. It is connected to supply air and water at a desired ratio and has a function of generating a bubbling water mixed fluid before ejecting the fluid from the fluid ejection port 3 of the ejection device A.
【００１１】以下、マイクロバブルの噴出装置Ａの詳細
について説明すると、該噴出装置Ａは、図２に示すよう
に、船体１の船殻１０の外側に支持される流路構成体１
１と、該流路構成体１１に配される流体噴出口３と、該
流体噴出口３の後縁部に配される流体誘導板１２とを具
備している。Hereinafter, the details of the micro-bubble ejection device A will be described. The ejection device A is, as shown in FIG. 2, a flow passage structure body 1 supported outside a hull 10 of a hull 1.
1, a fluid ejection port 3 disposed in the flow path forming body 11, and a fluid guide plate 12 disposed at a rear edge portion of the fluid ejection port 3.
【００１２】前記流路構成体１１は、船殻１０に直交状
態に一体に溶接等で取り付けられる外壁支持板１３と、
該外壁支持板１３の外側に一体に配される没水表面４を
形成する外壁１４と、これら船殻１０と外壁１４との間
に形成される流路１５とを有している。なお、外壁支持
板１３および外壁１４はステンレス鋼板等により形成さ
れている。The flow path forming body 11 has an outer wall supporting plate 13 integrally attached to the hull 10 in an orthogonal state by welding or the like,
The outer wall 14 has an outer wall 14 that is integrally formed on the outer side of the outer wall support plate 13 and forms a submerged surface 4, and a flow path 15 formed between the hull 10 and the outer wall 14. The outer wall support plate 13 and the outer wall 14 are formed of a stainless steel plate or the like.
【００１３】前記流路１５は、船体１の前後方向に沿っ
て配され、かつ気泡水混合流体発生手段２に接続される
とともに、流路１５の両側部は、外壁支持板１３によっ
て密閉される。The flow channel 15 is arranged along the front-rear direction of the hull 1 and is connected to the bubbly water mixed fluid generating means 2, and both sides of the flow channel 15 are sealed by outer wall support plates 13. .
【００１４】流体噴出口３および流体誘導板１２につい
て補足説明すると、流体誘導板１２は、外壁１４を打ち
抜き加工することによって舌片を残した状態とすること
によって形成され、打ち抜き時に開口された部分に流体
噴出口３が形成される。そして、流体誘導板１２は、流
体噴出口３の後縁部に基部が一体に支持され、後縁部の
内方位置に前方に向けて延長状態に配されている。The fluid outlet 3 and the fluid guide plate 12 will be supplementarily described. The fluid guide plate 12 is formed by punching the outer wall 14 to leave a tongue piece, and a portion opened at the time of punching. A fluid ejection port 3 is formed in the. The base of the fluid guide plate 12 is integrally supported by the rear edge of the fluid ejection port 3, and the fluid guide plate 12 is arranged in an extended state toward the front at the inner position of the rear edge.
【００１５】このように構成されているマイクロバブル
の噴出装置Ａでは、気泡水混合流体発生手段２を作動さ
せると、前述したように、空気と水とを所望の比率で混
合した気泡水混合流体が発生して、この気泡水混合流体
が、流路構成体１１の流路１５によって船殻１０に沿っ
て所望箇所の流体噴出口３まで移送される。気泡水混合
流体は、流体噴出口３の近傍において静圧および自身の
運動エネルギによって没水表面４へと噴出される。この
とき、流体噴出口３の前縁部と流体誘導板１２の先端と
によって開口面が設定されるので、静圧による気泡水混
合流体の噴出方向は、没水表面４にほぼ平行となり、加
えて、運動エネルギによる気泡水混合流体の噴出方向
は、流体誘導板１２の誘導方向、つまり、斜め後方とな
り、静圧による噴出方向とほぼ一致する。したがって、
両方のベクトル和の方向は、ほぼ没水表面４に沿ったも
のとなり、気泡水混合流体の噴出方向を広げることな
く、没水表面４の近傍に径の小さな気泡（マイクロバブ
ル）を多く存在させることができる。In the micro-bubble jetting device A thus constructed, when the bubble-water mixed fluid generating means 2 is actuated, as described above, the bubble-water mixed fluid in which air and water are mixed at a desired ratio. Occurs, the bubbling water mixed fluid is transferred to the fluid ejection port 3 at a desired position along the hull 10 by the flow path 15 of the flow path forming body 11. The bubbly water mixed fluid is jetted to the submerged surface 4 by static pressure and its own kinetic energy in the vicinity of the fluid jet port 3. At this time, since the opening surface is set by the front edge of the fluid ejection port 3 and the tip of the fluid guide plate 12, the ejection direction of the bubbly water mixed fluid due to the static pressure is substantially parallel to the submerged surface 4, and The jet direction of the bubbly water mixed fluid due to the kinetic energy is the guide direction of the fluid guide plate 12, that is, the obliquely rearward direction, and substantially coincides with the jet direction due to the static pressure. Therefore,
The directions of both vector sums are almost along the submerged surface 4, and many bubbles (micro bubbles) having a small diameter are present in the vicinity of the submerged surface 4 without expanding the jetting direction of the bubble-water mixed fluid. be able to.
【００１６】また、気泡水混合流体が、没水表面４に沿
って噴出されることにより、その反対方向への推進力と
して働く。この推進力は船殻１０に伝達され、船体１の
前方への駆動力となる。この場合にあって、空気と水と
は、３桁の質量差があるため、気泡水混合流体の噴出に
よる推進力の発生は、主として水の運動エネルギに基づ
くものとなる。Further, the bubbling water mixed fluid is jetted out along the submerged surface 4 to act as a propulsive force in the opposite direction. This propulsive force is transmitted to the hull 10 and becomes a driving force to the front of the hull 1. In this case, since the mass difference between air and water is three orders of magnitude, the generation of the propulsive force due to the jetting of the bubbling water mixed fluid is mainly based on the kinetic energy of water.
【００１７】〔第２実施例〕次に、図３を参照して噴出
装置Ａの第２実施例について説明する。この第２実施例
の噴出装置Ａでは、船殻１０の内側において気泡水混合
流体発生手段２に接続され船殻１０に斜め後方に向けて
貫通状態に形成される流路１５と、該流路１５に接続さ
れ没水表面４に形成される流体噴出口３と、該流体噴出
口３の後縁部に後方に開口を広げた状態に形成される凹
部２０とを具備しており、凹部２０の後方内面に斜め後
方に傾斜した状態の傾斜面２０ａが形成される。[Second Embodiment] Next, a second embodiment of the ejection device A will be described with reference to FIG. In the jetting apparatus A of the second embodiment, a channel 15 connected to the bubbling water mixed fluid generating means 2 inside the hull 10 and formed to penetrate the hull 10 obliquely rearward, and the channel 15. The fluid ejection port 3 is formed on the submerged surface 4 and is connected to the submerged surface 15, and the recess 20 is formed at the rear edge of the fluid ejection port 3 with the opening widened rearward. An inclined surface 20a is formed on the inner surface of the rear side of the vehicle in a state of being inclined obliquely rearward.
【００１８】このように構成されている噴出装置Ａで
は、気泡水混合流体は、流路１５に沿って移送され、流
体噴出口３から噴出される。このとき、流体噴出口３の
前縁部と流路１５の先端部とによって開口面が設定され
るので、静圧による気泡水混合流体の噴出方向は、没水
表面４にほぼ平行となり、加えて、運動エネルギによる
気泡水混合流体の噴出方向は、流路１５の先端部に対す
る凹部２０の形成されている方向、つまり、後方または
斜め後方となり、静圧による噴出方向とほぼ一致する。
したがって、両方のベクトル和の方向は、第１実施例と
同様に、ほぼ没水表面４に沿ったものとなる。In the jetting device A thus constructed, the bubble-water mixed fluid is transferred along the flow path 15 and jetted from the fluid jet port 3. At this time, since the opening surface is set by the front edge portion of the fluid ejection port 3 and the tip end portion of the flow path 15, the ejection direction of the bubbly water mixed fluid due to the static pressure is substantially parallel to the submerged surface 4, and The jetting direction of the bubbly water mixed fluid due to the kinetic energy is the direction in which the concave portion 20 is formed with respect to the tip end portion of the flow path 15, that is, the rearward or oblique rearward direction, and substantially coincides with the jetting direction due to the static pressure.
Therefore, the directions of both vector sums are substantially along the submerged surface 4, as in the first embodiment.
【００１９】なお、凹部２０を形成しないで、流路１５
の貫通方向のみによって気泡水混合流体の噴出方向を設
定すると仮定した場合には、流路１５を没水表面４に対
して、鋭角に形成しなければならない。しかし、流路１
５の方向が鋭角になるほど、没水表面４に対する孔開け
加工が困難で製作上限界がある。この点で、上記実施例
は、流路１５の方向を加工許容範囲内にして加工性が優
れ、没水表面４に沿った気泡水混合流体の噴出方向が得
られる。The flow path 15 is formed without forming the recess 20.
If it is assumed that the jetting direction of the bubbly water mixed fluid is set only by the penetrating direction, the flow path 15 must be formed at an acute angle with respect to the submerged surface 4. However, channel 1
As the direction of 5 becomes sharper, it becomes more difficult to form a hole in the submerged surface 4, and there is a limit in manufacturing. In this respect, in the above-described embodiment, the direction of the flow path 15 is set within the processing allowable range, the workability is excellent, and the ejection direction of the bubbly water mixed fluid along the submerged surface 4 can be obtained.
【００２０】一方、図４は、気泡水混合流体発生手段２
の構造例を示すもので、吸水口８及び加圧水供給手段２
１に接続状態の流路構成体１１と、該流路構成体１１の
側壁（管壁）の長手方向の一部に周方向及び長手方向に
ほぼ均一な間隔を明けて多数明けられる細孔２２、該細
孔２２の回りを囲んだ状態とするガスチャンバ２３と、
該ガスチャンバ２３の内部空間に接続される加圧空気供
給手段２４とを有している。On the other hand, FIG. 4 shows a bubble-water mixed fluid generating means 2
This is an example of the structure of the water suction port 8 and the pressurized water supply means 2
1, and a plurality of pores 22 formed in a part of the side wall (tube wall) of the flow path forming body 11 in the longitudinal direction with a substantially uniform interval in the circumferential direction and the longitudinal direction. A gas chamber 23 that surrounds the pores 22,
And a pressurized air supply means 24 connected to the internal space of the gas chamber 23.
【００２１】気泡水混合流体発生手段２により気泡水混
合流体を発生させる場合には、加圧水供給手段２１のポ
ンプを作動させることにより海水（水）を、流路構成体
１１の内部に送り込むとともに、加圧空気供給手段２４
のブロアを作動させることにより、加圧空気をガスチャ
ンバ２３の内部空間に送り込んで、多数の細孔２２から
噴出させて、気泡が混入した状態の気泡水混合流体を生
成するようにしたものである。When the bubbly water mixed fluid is generated by the bubbly water mixed fluid generating means 2, the pump of the pressurized water supply means 21 is operated to send seawater (water) into the flow path forming body 11, and Pressurized air supply means 24
By operating the blower, the pressurized air is sent into the internal space of the gas chamber 23 and ejected from the large number of pores 22 to generate a bubble-water mixed fluid in which bubbles are mixed. is there.
【００２２】[0022]
【発明の効果】本発明に係るマイクロバブルの噴出装置
にあっては、以下の効果を奏する。 （１） 流体噴出口の後縁部に流体誘導板を配すること
により、気泡水混合流体を流体誘導板によって誘導し
て、運動エネルギによる気泡水混合流体の噴出方向を静
圧による噴出方向とほぼ一致させ、気泡水混合流体の静
圧による噴出方向と動的エネルギによる噴出方向との整
合性を高めることができる。 （２） 流体誘導板によって気泡水混合流体の噴出方向
を設定することにより、噴出時のエネルギ損失を低減す
ることができる。 （３） 流体噴出口の後縁部に凹部を形成した場合であ
っても、気泡水混合流体を凹部が形成されている後方に
誘導して、運動エネルギによる噴出方向を静圧による噴
出方向とほぼ一致させ、静圧および動的エネルギにより
気泡水混合流体の噴出方向の整合性を高めることができ
る。 （４） 流体噴出口の後縁部に凹部を形成し、気泡水混
合流体の状態で噴出させることにより、気泡水混合流体
の持続性を高めて航走体の表面に沿って効果的に送り込
むことができる。The microbubble ejection device according to the present invention has the following effects. (1) By arranging a fluid guide plate at the trailing edge of the fluid ejection port, the bubbly water mixed fluid is guided by the fluid guide plate, and the ejection direction of the bubbly water mixed fluid due to kinetic energy becomes the ejection direction due to static pressure. By making them substantially coincident with each other, it is possible to enhance the consistency between the ejection direction due to the static pressure of the bubble-water mixed fluid and the ejection direction due to the dynamic energy. (2) By setting the ejection direction of the bubbly water mixed fluid with the fluid guide plate, it is possible to reduce energy loss during ejection. (3) Even when the recess is formed at the trailing edge of the fluid ejection port, the bubbling water mixed fluid is guided to the rear side where the recess is formed, and the ejection direction by the kinetic energy becomes the ejection direction by the static pressure. By making them substantially coincident with each other, it is possible to enhance the consistency of the jet direction of the bubble-water mixed fluid by the static pressure and the dynamic energy. (4) By forming a recess at the trailing edge of the fluid jet and ejecting it in the state of the bubble-water mixed fluid, the sustainability of the bubble-water mixed fluid is increased and it is effectively sent along the surface of the vehicle. be able to.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係るマイクロバブルの噴出装置が適用
される船舶の例を示す一部を省略した正面図である。FIG. 1 is a partially omitted front view showing an example of a ship to which a microbubble ejection device according to the present invention is applied.
【図２】本発明に係るマイクロバブルの噴出装置の第１
実施例を示す一部を省略した正断面図である。FIG. 2 is a first of a micro-bubble ejection device according to the present invention.
FIG. 4 is a front sectional view with a part omitted showing an embodiment.
【図３】本発明に係るマイクロバブルの噴出装置の第２
実施例を示す一部を省略した正断面図である。FIG. 3 is a second microbubble ejection device according to the present invention.
FIG. 4 is a front sectional view with a part omitted showing an embodiment.
【図４】本発明に係るマイクロバブルの噴出装置に適用
される気泡水混合流体発生手段の例を示すブロック図を
併記した正断面図である。FIG. 4 is a front sectional view together with a block diagram showing an example of a bubble-water mixed fluid generating means applied to a microbubble jetting device according to the present invention.
Ａ 噴出装置 Ｅ 摩擦低減対象範囲（吹出し領域） Ｙ 摩擦低減航走体 １ 船体 ２ 気泡水混合流体発生手段 ３ 流体噴出口 ４ 没水表面（船体表面） ７ 空気取入れ口 ８ 吸水口 １０ 船殻 １１ 流路構成体 １２ 流体誘導板 １３ 外壁支持板 １４ 外壁 １５ 流路 ２０ 凹部 ２０ａ 傾斜面 ２３ ガスチャンバ A Ejection device E Friction reduction target range (blowing area) Y Friction-reducing vehicle 1 Hull 2 Bubbling water mixed fluid generating means 3 Fluid ejection port 4 Submerged surface (hull surface) 7 Air intake port 8 Water intake port 10 Hull 11 Flow passage structure body 12 Fluid guide plate 13 Outer wall support plate 14 Outer wall 15 Flow passage 20 Recessed portion 20a Sloping surface 23 Gas chamber
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 義明 東京都江東区豊洲二丁目１番１号 石川島 播磨重工業株式会社東京第一工場内 (72)発明者 渡辺 修 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社技術研究所内 (72)発明者 光武 英生 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社技術研究所内 (72)発明者 丸山 尚一 神奈川県横浜市磯子区新中原町１番地 石 川島播磨重工業株式会社技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Yoshiaki Takahashi, Yoshiaki Takahashi, 2-1-1 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries, Ltd. Tokyo No. 1 factory (72) Osamu Watanabe Shinchu, Isogo-ku, Yokohama-shi, Kanagawa Haramachi No. 1 Ishikawajima-Harima Heavy Industries Co., Ltd. Technical Research Institute (72) Inventor Hideo Mitsutake No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawajima Harima Heavy Industries Co., Ltd. Technical Research Institute (72) Inventor Shoichi Maruyama Yokohama, Kanagawa No. 1 Shin-Nakahara-cho, Isogo-ku, Ishi Ishikawajima Harima Heavy Industries Ltd. Technical Research Institute
Claims (2)
であって、 船殻（１０）の外側に支持され気泡水混合流体を移送す
る流路構成体（１１）と、該流路構成体に接続状態に配
され気泡水混合流体を噴出させる流体噴出口（３）と、
該流体噴出口の後縁部の内方位置に前方に延長状態に一
体に配され気泡水混合流体の噴出方向を斜め後方に誘導
する流体誘導板（１２）とを具備することを特徴とする
マイクロバブルの噴出装置。1. A device (A) for ejecting a bubbling water mixed fluid.
And a fluid passage structure (11) that is supported on the outside of the hull (10) and transfers the bubble-water mixed fluid, and a fluid jet that is connected to the flow passage composition and ejects the bubble-water mixed fluid. Exit (3),
A fluid guide plate (12) which is integrally disposed in an inwardly extended position at the rear edge of the fluid ejection port in an extended state in the forward direction and guides the ejection direction of the bubble-water mixed fluid obliquely rearward. Micro bubble ejection device.
であって、 船殻（１０）に配され気泡水混合流体を船殻の外側の斜
め後方に噴出させる流体噴出口（３）と、該流体噴出口
の後縁部に後方に開口を広げた状態に形成され噴出する
気泡水混合流体を船殻の外表面に誘導する凹部（２０）
とを具備することを特徴とするマイクロバブルの噴出装
置。2. A device (A) for ejecting a bubbling water mixed fluid.
And a fluid ejection port (3) disposed in the hull (10) for ejecting the bubble-water mixed fluid obliquely rearward of the outer side of the hull, and an opening rearwardly extended to a rear edge portion of the fluid ejection port (20) that guides the bubbly water mixed fluid that is formed and ejected to the outer surface of the hull
A micro-bubble ejection device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7037424A JPH08229369A (en) | 1995-02-24 | 1995-02-24 | Microbubble jetting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7037424A JPH08229369A (en) | 1995-02-24 | 1995-02-24 | Microbubble jetting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08229369A true JPH08229369A (en) | 1996-09-10 |
Family
ID=12497145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7037424A Withdrawn JPH08229369A (en) | 1995-02-24 | 1995-02-24 | Microbubble jetting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08229369A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102244454B1 (en) * | 2020-10-23 | 2021-04-27 | (주)케이오더블유 | Bubble generating apparatus for increasing dissolved oxygen |
-
1995
- 1995-02-24 JP JP7037424A patent/JPH08229369A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102244454B1 (en) * | 2020-10-23 | 2021-04-27 | (주)케이오더블유 | Bubble generating apparatus for increasing dissolved oxygen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020507 |