CN107406124B

CN107406124B - The frictional resistance of air lubrication formula ship reduces device, ship

Info

Publication number: CN107406124B
Application number: CN201580078285.3A
Authority: CN
Inventors: 高野真一; 川北千春; 村田聪; 佐藤慎辅
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 2015-03-31
Filing date: 2015-12-10
Publication date: 2019-09-20
Anticipated expiration: 2035-12-10
Also published as: CN107406124A; JP2016193642A; JP6484902B2; KR20170132727A; KR102139045B1; WO2016157633A1

Abstract

Frictional resistance reduction device (20E) that the air lubrication formula ship (10) of the frictional resistance generated between the water in hull (11) with around is reduced to air is sprayed around hull (11) has: injector body (31), flow path (31r) with pressure-air (AH) flowing for being supplied from pressure-air supply source (14), and low-pressure air (AL) of the pressure lower than pressure-air (AH) is introduced into flow path (31r)；And bubble blowing unit (21), by spraying the pressure-air (AH) and low-pressure air (AL) that are discharged from injector body (31), and bubble is generated around hull (11).

Description

The frictional resistance of air lubrication formula ship reduces device, ship

Technical field

The present invention relates to the frictional resistance of air lubrication formula ship to reduce device, ship.

The application is advocated excellent based on the Japanese Patent Application 2015-73479 filed an application on March 31st, 2015 to Japan It first weighs, and its content is incorporated herein.

Background technique

Ship under sail, will receive and submerge the frictional resistance generated between part and water in water in hull.The friction Resistance becomes the loss for the propulsive force of hull, therefore interferes to cut down mentioning for the energy-saving effect generated by consumption fuel High, CO₂Discharge rate is cut down.

Therefore, it is proposed to flow the bubble generated and spraying air from the peripherad water of hull along hull surface It is dynamic, to reduce the technology of the frictional resistance generated between water.

Bubble can for example be generated by air blower.The air blower is advantageous in terms of consumption energy is small, commonly used in low Press the purposes of big flow.

On the other hand, in absorbing water deeper ship, biggish drinking water pressure acts on the ejiction opening of bubble.In the situation Under, in order to which air is fed through hull bottom and is sprayed into water, with the shallower draft the case where compared with need to improve the pressure of air.So And obtain the ejection pressure of air with being unable to fully sometimes by air blower.Such as, it is also considered that use can boost into more high pressure The source of high pressure air such as compressor method, but consume energy and become larger.Therefore, it in the case where absorbing water relatively depth, is rubbed by making Wipe drag reduction and the consumption energy that reduces and in order to which the difference of consumption energy needed for being sent into air tails off, energy-saving effect becomes smaller.

Patent document 1 is disclosed by will be from a part of the forced air after the pressurization of the booster of engine to air blower It supplies to improve the structure of the pressure for the air being sent into hull bottom.According to this structure, even if in the case where absorbing water relatively depth, Also it is able to suppress the increase of consumption energy and air is fed through hull bottom and is sprayed into water, as a result, being able to suppress energy conservation The reduction of effect.

Patent document 1: Japanese Unexamined Patent Publication 2013-91376 bulletin

Summary of the invention

Subject to be solved by the invention

Technology described in Patent Document 1 in order to adjust the pressure of forced air according to the output of engine and drinking water pressure and With complicated structure.

In addition, exporting the stream that lower situation etc. obtains the forced air supplied from booster with being unable to fully in engine In the case where amount, the output of the source of high pressure air such as increase or the compressor of the output of engine is needed to reduce frictional resistance Increase, thus energy consumption increase.Accordingly, it is possible to cannot get sufficient energy-saving effect, CO₂Discharge rate cuts down effect.

It is an object of that present invention to provide a kind of increase for being able to suppress parts count and ensure required air mass flow, obtains Sufficient energy-saving effect, CO₂The frictional resistance that discharge rate cuts down the air lubrication formula ship of effect reduces device, ship.

Solution for solving the problem

First form according to the present invention, the frictional resistance of air lubrication formula ship, which reduces device, to be sprayed around hull Air come reduce above-mentioned hull and around water between the frictional resistance of the air lubrication formula ship of frictional resistance that generates drop Low device, the frictional resistance reduce device and have injector, and above-mentioned injector has the height for supplying from pressure-air supply source The flow path of air flowing is pressed, and introduces low-pressure air of the pressure lower than above-mentioned pressure-air into above-mentioned flow path.Frictional resistance drop Low device is also equipped with bubble blowing unit, above-mentioned bubble blowing unit by by from the above-mentioned pressure-air that above-mentioned injector is discharged and on Low-pressure air ejection is stated, and generates bubble around above-mentioned hull.

In this way, by supplying pressure-air and low-pressure air from injector to bubble blowing unit, and it is capable of increasing air stream Amount.Moreover, being also able to suppress the equipment class for generating pressure-air or low-pressure air in the case where not increasing air mass flow Required energy.

Second form according to the present invention, the frictional resistance of air lubrication formula ship reduce device using the first form as base Plinth, is also possible to above-mentioned flow path from the upstream side toward the downstream side and flow path cross sectional area is gradually reduced.

With this configuration, in the flow path of injector, pressure-air towards downstream side and flow velocity increases, thus in flow path Interior generation negative pressure.By the negative pressure, low-pressure air can be introduced into the flow path of injector, therefore do not needed low in order to introduce Pressure air and increase the dedicated power source of air mass flow.

Third form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of the first or second Based on, it is also possible to be the host for promoting above-mentioned hull or the subsidiary engine to above-mentioned host gas supply.

In this way, by using the exhaust from host or the compressed air being discharged from subsidiary engines such as boosters as high pressure sky Gas, do not need compressor is in addition arranged in order to generate pressure-air etc., it can be realized cost effective.

4th form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of the first or second Based on, being also possible to above-mentioned pressure-air supply source is the compressor compressed to atmosphere.

With this configuration, pressure-air easily can be obtained from atmosphere.

5th form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of first to fourth In based on any form, the bubble for being also possible to be also equipped with the above-mentioned bubble that recycling is sprayed from above-mentioned bubble blowing unit recycles Portion, above-mentioned low-pressure air are by the above-mentioned bubble of above-mentioned bubble recoverer recycling and after being taken into from atmosphere and being compressed by air blower Air.

In this way, by making by the low-pressure air from the bubble that bubble recoverer recycles and by the air that air blower compresses For low-pressure air use, it can readily insure that low-pressure air and increase the flow of low-pressure air i.e. to the supply of bubble blowing unit Air mass flow.

In addition, by recycling low-pressure air using bubble recoverer, and can reduce the spiral shell in the quarter setting of hull The case where rotation paddle is involved in bubble, therefore it is able to suppress the generation of vibration or the decline of propulsive efficiency.

6th form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of first to fourth In based on any form, the bubble for being also possible to be also equipped with the above-mentioned bubble that recycling is sprayed from above-mentioned bubble blowing unit recycles Portion, above-mentioned low-pressure air are obtained from the above-mentioned bubble recycled by above-mentioned bubble recoverer.

In this way, being able to suppress by obtaining low-pressure air from the bubble recycled by bubble recoverer for generating low pressure sky The equipment cost of gas.

In addition, can reduce the spiral in the quarter setting of hull by recycling low-pressure air using bubble recoverer Paddle is involved in the case where bubble, therefore is able to suppress the generation of vibration or the decline of propulsive efficiency.

7th form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of first to fourth In based on any form, being also possible to above-mentioned low-pressure air is the air being taken into from atmosphere.

With this configuration, the low-pressure air for increasing air mass flow can be readily insured that.

8th form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of first to fourth In based on any form, being also possible to above-mentioned low-pressure air is to be pressed by air blower the air being taken into from atmosphere Air after contracting.

With this configuration, it can readily insure that low-pressure air, and increase the flow of low-pressure air, i.e., be sprayed to bubble The air mass flow of portion's supply.

9th form according to the present invention, the frictional resistance of air lubrication formula ship reduce device using the 4th form as base Plinth, be also possible to have to combustion air compressed and to the booster that the host for promoting above-mentioned hull supplies, it is above-mentioned Low-pressure air is by the air after above-mentioned compressed.

In this way, empty in order to generate low pressure by not needing using the compressed air sprayed from booster as low-pressure air Gas and be provided additionally with equipment, can be realized cost effective.In this case, pressure-air for example can by compressor etc. with than The mode that the low-pressure air supplied from booster becomes high pressure supplies.

Tenth form according to the present invention, the frictional resistance of air lubrication formula ship reduce device in the form of first to the 9th In based on any form, be also possible to be also equipped with and the air being taken into from atmosphere be compressed and to above-mentioned bubble blowing unit The air boosting section of supply, the frictional resistance of above-mentioned air lubrication formula ship reduce device and can alternatively boost from above-mentioned air At least one party in portion and above-mentioned injector supplies air to above-mentioned bubble blowing unit.

It with this configuration, can be by the air after being boosted by air boosting section to gas in the case where shallower draft Steep blowing unit supply, in the case where absorbing water relatively depth, can from injector by pressure-air and low-pressure air to bubble blowing unit Supply.Thereby, it is possible to inhibit energy consumption and supply air appropriate to bubble blowing unit according to the depth of drinking water.

11st form according to the present invention, the frictional resistance of air lubrication formula ship reduce device with the first to the tenth shape In state based on any form, it is also possible to be also equipped in the upstream side of above-mentioned injector and temporarily accumulates above-mentioned pressure-air Gasing tank.

With this configuration, it is able to suppress in the sky for generating the generations such as the equipment such as booster or compressor of pressure-air The pulsation of the flowing of gas.Thereby, it is possible to collaborate low-pressure air swimmingly with the pressure-air flowed in injector.Moreover, By inhibiting to pulse, bubble can be steadily generated from bubble blowing unit.

12nd form according to the present invention, ship have the air lubrication formula of any form in the first to the 11st form The frictional resistance of ship reduces device.

With this configuration, energy-saving, CO be can be realized₂The reduction of discharge rate simultaneously improves propulsive force.

Invention effect

The frictional resistance of air lubrication formula ship according to the present invention reduces device, ship, can be improved energy-saving effect, CO₂Discharge rate cuts down effect.

Detailed description of the invention

Fig. 1 is to indicate that the frictional resistance of the air lubrication formula ship of first embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Fig. 2 is to indicate that the frictional resistance of the air lubrication formula ship of second embodiment of the present invention reduces device, ship Integrally-built schematic diagram.

Fig. 3 is to indicate that the frictional resistance of the air lubrication formula ship of third embodiment of the present invention reduces device, ship Integrally-built schematic diagram.

Fig. 4 is to indicate that the frictional resistance of the air lubrication formula ship of the 4th embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Fig. 5 is to indicate that the frictional resistance of the air lubrication formula ship of the 5th embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Fig. 6 is to indicate that the frictional resistance of the air lubrication formula ship of sixth embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Fig. 7 is to indicate that the frictional resistance of the air lubrication formula ship of the 7th embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Fig. 8 is to indicate that the frictional resistance of the air lubrication formula ship of the 8th embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Fig. 9 is to indicate that the frictional resistance of the air lubrication formula ship of the 9th embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Figure 10 is to indicate that the frictional resistance of the air lubrication formula ship of the tenth embodiment of the invention reduces device, ship Integrally-built schematic diagram.

Figure 11 is to indicate that the frictional resistance of the air lubrication formula ship of the 11st embodiment of the invention reduces device, ship The integrally-built schematic diagram of oceangoing ship.

Figure 12 is to indicate that the frictional resistance of the air lubrication formula ship of the 12nd embodiment of the invention reduces device, ship The integrally-built schematic diagram of oceangoing ship.

Specific embodiment

Hereinafter, being based on attached drawing, device, ship are reduced to the frictional resistance of the air lubrication formula ship of embodiments of the present invention Oceangoing ship is illustrated.

(first embodiment)

Fig. 1 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in Figure 1, present embodiment ship (air lubrication formula ship) 10 mainly have hull 11, propeller 12, Host 13, booster 14, frictional resistance reduce device 20A.

Propeller 12 is rearward provided projectingly from the bottom of the side quarter 11r of hull 11.The propeller 12 has rotation Axis 12s, rotary shaft 12s are connect with the host 13 being arranged in hull 11.

Host 13 generates driving force and making the mixer for mixing with air fuel be burnt, to drive propeller 12 rotary shaft 12s rotation.

Booster 14 is taken into atmosphere from outside and is compressed, at least using part of it as the combustion air of high pressure to Host 13 is sent into.

Frictional resistance reduces device 20A and has bubble blowing unit 21, air supply unit 30A.

The hull bottom 11b of the bow portion side 11f of hull 11 is arranged in bubble blowing unit 21.Bubble blowing unit 21 is supplied via air It is connect to pipe 22 with aftermentioned air supply unit 30A.Bubble blowing unit 21 will be from air supply unit 30A by being arranged in hull The air that air supply pipe 22 in 11 supplies from hull bottom 11b to hull 11 around water in spray.By from bubble blowing unit 21 air sprayed, and alow bubble is generated in the water around 11b.Bubble is along with the propulsion of ship 10 and relative to hull 11 make a relative move.More specifically, quarter 11r side of the bubble of generation from bubble blowing unit 21 towards ship cephalocaudal direction It is moved along hull bottom 11b.

Air supply unit 30A has injector body 31.The injector body 31 has inside it from first end 31a Towards the flow path 31r of the cone cell of the second end 31b undergauge.Pressure-air is connected in the first end 31a of injector body 31 Supplying tubing 35 is connected with air supply pipe 22 in the second end 31b of injector body 31.

Suction inlet 32 is connected in the circumferential lateral surface of injector body 31.More specifically, the first end of suction inlet 32 The second end 32b of 32a and external connection, suction inlet 32 is connect with the circumferential lateral surface of injector body 31.Suction inlet 32 is at it Inside has the flow path 32r for being connected to the first end 32a of suction inlet 32 with the second end 32b.Flow path 32r is formed as from Cone cell of the one end 32a towards the second end 32b undergauge.It is connected at the interflow flow path 32r that the inside of the suction inlet 32 is formed The middle part of the flow path 31r of above-mentioned injector body 31.Here, illustrate the case where flow path 32r is formed as cone cell, but flow path 32r may not be cone cell.

In this embodiment, pressure-air supplying tubing 35 and the high pressure air supply source 37 such as turbo-compressor connect It connects.

The first end 32a of suction inlet 32 is connect with low-pressure air supply source 38, which supplies ratio By the low-pressure air AL for the pressure-air AH low pressure that pressure-air supply source 37 generates.Low-pressure air supply in the embodiment Source 38 is taken into atmosphere and supplies as low-pressure air AL and to suction inlet 32.Here, being taken into the place of atmosphere can be for example upper first Any of plate, the inner space of hull 11.

It is equipped in a manner of it can be opened and closed on air supply pipe 22 between injector body 31 and bubble blowing unit 21 Check-valves V1.Check-valves V1 only allows the flowing from 31 side of injector body to 21 side of bubble blowing unit, prevents to spray from bubble The flowing of 21 lateral jetter main body of portion, 31 side.

Switching valve V2 is equipped between low-pressure air supply source 38 and injector body 31.Switching valve V2 is for low-pressure air The flowing of low-pressure air between supply source 38 and injector body 31 is opened and closed.

Next, the movement for reducing device 20A to above-mentioned frictional resistance is illustrated.

In order to reduce frictional resistance by device 20A work, firstly, making pressure-air in the state of closing switching valve V2 Supply source 37 starts.Then, in injector body 31, pressure-air AH is matched from first end 31a by pressure-air supply Pipe 35 is sent into flow path 31r, and check-valves V1 is opened.Pressure-air AH is supplied by check-valves V1 to bubble blowing unit 21 as a result, It gives.Here, from first end 31a be sent into pressure-air AH in injector body 31, from first end in flow path 31r During 31a is flowed towards the second end 31b, along with the diminution of flow path cross sectional area, flow velocity is gradually risen.Due to the flow velocity Increase, pressure decline in flow path 31r and generate negative pressure.Second end of the negative pressure generated in flow path 31r from suction inlet 32 Portion 32b is extended in flow path 32r.

Next, switching valve V2 is opened after starting low-pressure air supply source 38.Then, it is supplied from low-pressure air The low-pressure air AL sent out to source 38 is flowed into from the first end 32a of the suction inlet 32 of injector body 31 into flow path 32r.Stream Enter and is introduced in the flow path 31r to injector body 31 to the low-pressure air AL in flow path 32r from the second end 32b.It is introduced into Collaborate in flow path 31r with pressure-air AH to the low-pressure air AL in flow path 31r, from the second end of injector body 31 31b is admitted to air supply pipe 22.Air obtained from low-pressure air AL will be joined in pressure-air AH as a result, to bubble Blowing unit 21 supplies.

Here, in Fig. 1, for the ease of illustration, from the first end 31a of injector body 31 to the second end 31b's It is integrally formed into cone cell.However, the shape of injector body 31 is not limited to the shape, as long as the of connection suction inlet 32 The position of two end 32b can fully improve the shape of the flow velocity in flow path 31r.It can also be the of injector body 31 Diffuser is arranged in two end 31b, and the pressure recovery of air is made in injector body 31.

Device, ship are reduced according to the frictional resistance of the air lubrication formula ship of above-mentioned first embodiment, it will be from compression Pressure-air AH that the high pressures such as machine air supply source 37 supplies and the low-pressure air AL supplied from low-pressure air supply source 38 are to gas Blowing unit 21 is steeped to supply.Thereby, it is possible to increase the air mass flow sprayed from bubble blowing unit 21.Therefore, even if it is deeper absorbing water In the case where, an adequate amount of bubble can be also generated in water.

In addition, with phase the case where being only supplied the pressure-air AH from pressure-air supply source 37 to bubble blowing unit 21 Than low-pressure air AL can be made to collaborate by injector body 31, the power of pressure-air supply source 37 can be accordingly decreased. That is, can be with less power come air mass flow same the case where ensuring with using only pressure-air supply source 37.

In addition, low-pressure air AL due to pressure-air AH in the injector body 31 of air supply unit 30A by being flowed Generated negative pressure and be introduced into and to bubble blowing unit 21 supply, there is no need for make low-pressure air AL and pressure-air The power at the interflow AH.That is, can be inhibited by the air sprayed from bubble blowing unit 21 in hull with less consumption energy The frictional resistance generated between 11 and water.

As a result, being able to suppress the loss of the propulsive force for hull, effectively realizes fuel consumption and cut down generation The raising of energy-saving effect, CO₂Discharge rate is cut down.

(second embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of second embodiment of the present invention is reduced Device, ship are illustrated.It is only the structure and the first reality for having air supply unit in second embodiment described below Apply mode difference.Therefore, identical appended drawing reference is marked for part same as the first embodiment to be illustrated, and omit Repeated explanation.

Fig. 2 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in Fig. 2, the ship 10 of present embodiment, which has frictional resistance, reduces device 20B.Frictional resistance reduces device 20B has bubble blowing unit 21, air supply unit 30A, low-pressure air supply unit (air boosting section) 40.

Low-pressure air supply unit 40 has air introduction pipe 41, air blower 42, air supply pipe 43.

The first end 41a of air introduction pipe 41 is from the hull 11 more against the top than water line L, such as upper deck is into atmosphere Form opening.The second end 41b of air introduction pipe 41 is connect with air blower 42.

Air blower 42 makes the atmosphere boosting imported by air introduction pipe 41, generates more empty than the low pressure of pressure-air AH low pressure Gas AL2.

Air supply pipe 43 connects air blower 42 and bubble blowing unit 21.It will be by air blast via the air supply pipe 43 Low-pressure air AL2 after machine 42 boosts is sent into bubble blowing unit 21.

Switching valve V2 is equipped between low-pressure air supply source 38 and injector body 31.Switching valve V2 supplies low-pressure air It is opened and closed to the flow path of the low-pressure air between source 38 and injector body 31.

Non-return is equipped in a manner of it can be opened and closed on air supply pipe 43 between air blower 42 and bubble blowing unit 21 Valve V3.Check-valves V3 only allows the flowing from 42 side of air blower to 21 side of bubble blowing unit, prevent from 21 side of bubble blowing unit to The flowing of 42 side of air blower.

It reduces in device 20B, is the same as the above first embodiment, by air supply unit 30A, from pressure in frictional resistance The pressure-air AH and exist from the low-pressure air AL that low-pressure air supply source 38 supplies that the high pressures such as contracting machine air supply source 37 supplies In injector body 31 after interflow, supplied to bubble blowing unit 21.

The frictional resistance of present embodiment, which reduces device 20B, can make air supply unit 30A and low-pressure air supply unit 40 It alternatively works and air is supplied to bubble blowing unit 21.

For example, in the case where light draught Even Keel is shallower, by low-pressure air supply unit 40 by low-pressure air AL2 to Bubble blowing unit 21 supplies.More specifically, in the state that switching valve V2 is closed, air blower 42 is made to work.Next, will be only It returns valve V3 to open, the low-pressure air AL2 from air blower 42 is supplied to bubble blowing unit 21.

For example, in the case where full-load draft Even Keel relatively depth, by air supply unit 30A by pressure-air AH and low pressure Air AL is supplied to bubble blowing unit 21.More specifically, since the state that switching valve V2 is closed, with first embodiment phase Together, successively carry out the work of pressure-air supply source 37, the starting of low-pressure air supply source 38, switching valve V2 opening action. Pressure-air AH and low-pressure air AL are supplied to bubble blowing unit 21 as a result,.

The frictional resistance of present embodiment, which reduces device 20B, can also make low-pressure air supply unit 40 and air supply unit 30A is worked at the same time.Accordingly, for bubble blowing unit 21, other than pressure-air AH, low-pressure air AL and low can be also supplied Press air AL2.

It can due to having low-pressure air supply unit 40 and air supply unit 30A according to above-mentioned second embodiment Inhibited to consume energy according to drinking water, and supplies the air of appropriate amount to bubble blowing unit 21.

In addition, being the same as the above first embodiment, in the case where supplying air from air supply unit 30A, from compression Pressure-air AH that the high pressures such as machine air supply source 37 supplies and the low-pressure air AL supplied from low-pressure air supply source 38 are to gas Blowing unit 21 is steeped to supply.Therefore, it is capable of increasing the air mass flow sprayed from bubble blowing unit 21.That is, can be with less than in the past Power, it is ensured that with previous same air mass flow.

In addition, if working at the same time low-pressure air supply unit 40 with air supply unit 30A, then for bubble blowing unit 21, other than pressure-air AH, additionally it is possible to supply low-pressure air AL and low-pressure air AL2.Thereby, it is possible to further increase to The air mass flow that bubble blowing unit 21 supplies.

In this way, being inhibited by the air sprayed from bubble blowing unit 21 in hull 11 and water with less consumption energy Between the frictional resistance that generates can effectively realize and be disappeared by fuel thus, it is possible to inhibit the loss of the propulsive force for hull Consumption cuts down the raising of the energy-saving effect generated, CO₂Discharge rate is cut down.

(third embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of third embodiment of the present invention is reduced Device, ship are illustrated.In the third embodiment, for portion identical with first embodiment, second embodiment Minute mark is infused identical appended drawing reference and is illustrated, and omits repeated explanation.

Fig. 3 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 3, the ship 10 of present embodiment, which has frictional resistance, reduces device 20C.The frictional resistance reduces dress It sets 20C and has bubble blowing unit 21, air supply unit 30C, low-pressure air supply unit 40.

Air supply unit 30C has injector body 31.Suction inlet is connected in the circumferential lateral surface of the injector body 31 32。

In the first end 31a connection pressure-air supplying tubing 35 of injector body 31, on the other hand in injector master The second end 31b connection air supply pipe 22 of body 31.

35 branch of pressure-air supplying tubing of present embodiment is connected to booster (pressure-air supply source, subsidiary engine) 14 Discharge side.The pressure-air supplying tubing 35 is using a part for the compressed air being discharged from booster 14 as pressure-air AH It is sent into the first end 31a of injector body 31.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 forms opening at hull 11, to the atmosphere more against the top than water line L, using atmosphere as low-pressure air AL to suction Entrance 32 is sent into.

It is equipped in a manner of it can be opened and closed on air supply pipe 22 between injector body 31 and bubble blowing unit 21 Check-valves V1.

Switching valve V2 is equipped in a manner of it can be opened and closed in the low-pressure air supplying tubing 39 for be taken into atmosphere.Switching valve V2 Make interrupted from low-pressure air supplying tubing 39 to the flowing of the low-pressure air of injector body 31.

Non-return is equipped in a manner of it can be opened and closed on air supply pipe 43 between air blower 42 and bubble blowing unit 21 Valve V3.

In addition, in the pressure-air supplying tubing 35 for being taken into pressure-air AH from booster 14 in a manner of it can be opened and closed Equipped with switching valve V4.Switching valve V4 can make the stream of the pressure-air AH from from pressure-air supplying tubing 35 to injector body 31 Dynamic circuit breaker is continuous and adjusts its flow.

It is empty by the compressed high pressure of booster 14 when the state closed from switching valve V2, V4 starts to open switching valve V4 Gas AH passes through pressure-air supplying tubing 35 to the injector body 31 of such air supply unit 30C from first end 31a Flow path 31r is sent into.Next, opening check-valves V1.Pass through check-valves V1 to bubble blowing unit 21 from injector body 31 as a result, Supply pressure-air AH.Here, the pressure-air AH being sent into from first end 31a is in injector body 31, flow velocity is gradually risen Height generates negative pressure in flow path 31r.

Next, the low pressure being made of the atmosphere being taken into from low-pressure air supplying tubing 39 is empty when opening switching valve V2 Gas AL is flowed into from the first end 32a of suction inlet 32 into flow path 32r due to the negative pressure in injector body 31.

The low-pressure air AL being flowed into flow path 32r is drawn in the flow path 31r to injector body 31 from the second end 32b Enter.It is introduced in the low-pressure air AL in flow path 31r to collaborate in flow path 31r with pressure-air AH, from injector body 31 The second end 31b be admitted to air supply pipe 22.It joined in pressure-air AH to the supply of bubble blowing unit 21 as a result, low Press air obtained from air AL.

Identical as second embodiment, which, which reduces device 20C, can make air supply unit 30C and low-pressure air Supply unit 40 alternatively works and supplies air to bubble blowing unit 21.It is as a result, for example, more shallower in light draught Even Keel In the case of, low-pressure air AL2 is supplied to bubble blowing unit 21 by low-pressure air supply unit 40.More specifically, switching In the state that valve V2, V4 are closed, air blower 42 is made to work.Next, opening check-valves V3.As a result, by low-pressure air AL2 to gas Blowing unit 21 is steeped to supply.

For example, in the case where full-load draft Even Keel relatively depth, by air supply unit 30A by pressure-air AH and low pressure Air AL is supplied to bubble blowing unit 21.More specifically, since the state that switching valve V2, V4 is closed, implement with this third Mode in the same manner, successively switches over the opening action of valve V4, the opening action of switching valve V2.As a result, by pressure-air AH and Low-pressure air AL is supplied to bubble blowing unit 21.

It is further possible to work at the same time low-pressure air supply unit 40 and air supply unit 30C, for bubble blowing unit 21, other than pressure-air AH, also supply low-pressure air AL and low-pressure air AL2.

According to above-mentioned third embodiment, using a part for the compressed air being discharged from booster 14 as pressure-air AH Utilize, therefore do not need pressure-air AH in order to obtain and prepare compressor etc., zero is able to suppress compared with second embodiment Part number.

In the above-described 3rd embodiment, using a part for the compressed air being discharged from booster 14 as pressure-air AH It utilizes, but for example can also be using the exhaust gas from the host 13 for promoting the hull 11 of ship 10 as pressure-air AH to spray Emitter main body 31 is sent into.In this case, as shown in figure 3, replace pressure-air supplying tubing 35 and be arranged will come from host 13 The exhaust gas supply pipe 35G (hereinafter, the 4th is also identical to sixth embodiment) that is sent into injector body 31 of exhaust gas.In exhaust gas Supply pipe 35G is equipped with switching valve V4 ' in a manner of it can be opened and closed.Switching valve V4 ' can make from exhaust gas supply pipe 35G to injector The flowing of the pressure-air AH of main body 31 is interrupted and adjusts its flow.

(the 4th embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 4th embodiment of the invention is reduced Device, ship are illustrated.In the 4th embodiment, for first to the identical part of third embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Fig. 4 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 4, the ship 10 of present embodiment, which has frictional resistance, reduces device 20D.The frictional resistance reduces dress It sets 20D and has bubble blowing unit 21, air supply unit 30D.

Air supply unit 30D has injector body 31.Moreover, the circumferential lateral surface in injector body 31 is connected with sucking Mouth 32.

Identical as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.The of injector body 31 One end 31a is connected with pressure-air supplying tubing 35, is connected with air supply pipe 22 in the second end 31b.Implement with third In the same manner, the pressure-air supplying tubing 35 of present embodiment is connected to the discharge side of booster 14 to mode, will be from booster 14 A part of the compressed air of discharge is sent into as pressure-air AH to the first end 31a of injector body 31.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is connect with air blower 42.The atmosphere imported by air introduction pipe 41 is sucked and is boosted by air blower 42, Generate the low-pressure air AL than pressure-air AH low pressure.Low-pressure air AL is via low-pressure air supplying tubing 39 to suction inlet 32 It imports.

In low-pressure air supplying tubing 39, set in a manner of it can be opened and closed between air blower 42 and injector body 31 There is switching valve V2.Switching valve V2 makes interrupted from low-pressure air supplying tubing 39 to the flowing of the low-pressure air of injector body 31.

It is equipped in a manner of it can be opened and closed in the pressure-air supplying tubing 35 for being taken into pressure-air AH from booster 14 Switching valve V4.Switching valve V4 makes the interrupted of the flowing of the pressure-air AH from from pressure-air supplying tubing 35 to injector body 31 And adjust its flow.

In air supply unit 30D, when the state closed from switching valve V2, V4 starts to open switching valve V4, by being pressurized The compressed pressure-air AH of device 14 is sent by pressure-air supplying tubing 35 to injector body 31 from first end 31a. Next, opening check-valves V1.Pressure-air AH is supplied by check-valves V1 to bubble blowing unit 21 from injector body 31 as a result, It gives.Here, from the first end 31a of injector body 31 be sent into pressure-air AH flow velocity in injector body 31 gradually It increases, generates negative pressure in flow path 31r.

Next, switching valve V2 is opened, so that low-pressure air AL be sent to suction inlet 32 after making air blower 42 work Enter.Then, by the negative pressure in injector body 31, the low-pressure air AL of suction inlet 32 will be imported into injector body 31 It introduces.It is introduced in the low-pressure air AL in flow path 31r to collaborate in flow path 31r with pressure-air AH, from injector body 31 the second end 31b is sent into air supply pipe 22.Low-pressure air AL will be joined in pressure-air AH as a result, and obtained Air to bubble blowing unit 21 supply.

According to above-mentioned 4th embodiment, after boosting by the compressed pressure-air AH of booster 14 and by air blower 42 Low-pressure air AL to bubble blowing unit 21 supply.Thereby, it is possible to increase the air mass flow sprayed from bubble blowing unit 21.Especially Be in the case where four embodiments, compared with the case where being intactly used as low-pressure air AL to be taken into atmosphere, energy Enough increase the flow of low-pressure air AL.

(the 5th embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 5th embodiment of the invention is reduced Device, ship are illustrated.In the 5th embodiment, for part identical with the first~the 4th embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Fig. 5 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 5, the ship 10 of present embodiment, which has frictional resistance, reduces device 20E.The frictional resistance reduces dress It sets 20E and has bubble blowing unit 21, bubble recoverer 25, air supply unit 30E, low-pressure air supply unit 40.

Bubble recoverer 25 recycles the bubble generated by bubble blowing unit 21.Bubble recoverer 25 forms downward opening And it is set to the hull bottom 11b of hull 11.The bubble recoverer 25 configures on ship cephalocaudal direction, compared to propeller 12 in bow portion The side 11f, and the side 11r on the quarter is configured as much as possible.

Air supply unit 30E has injector body 31.Suction inlet 32 is connected in the circumferential lateral surface of injector body 31.

Identical as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.The of injector body 31 One end 31a is connected with pressure-air supplying tubing 35, and is connected with air supply in the second end 31b of injector body 31 Pipe 22.

The pressure-air supplying tubing 35 of present embodiment is connected to the discharge side of booster 14.It is sprayed from booster 14 A part of compressed air is sent into as pressure-air AH to the first end 31a of injector body 31.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is connected to bubble recoverer 25, using the air obtained from the bubble recycled by the bubble recoverer 25 as low Air AL is pressed to be sent into suction inlet 32.

It is equipped in a manner of it can be opened and closed in the pressure-air supplying tubing 35 for being taken into pressure-air AH from booster 14 Switching valve V4.Switching valve V4 make the pressure-air AH from flowing from pressure-air supplying tubing 35 to injector body 31 discontinuously and Adjust its flow.

In the low pressure sky for being taken into the air obtained from the bubble recycled by bubble recoverer 25 as low-pressure air AL Gas supplying tubing 39 makes to be equipped with check-valves V5.Check-valves V5 only allows the flowing from bubble recoverer 25 to suction inlet 32, resistance The only flowing from suction inlet 32 to bubble recoverer 25.Check-valves V5 has the flow tune from bubble recoverer 25 to suction inlet 32 Whole function.Here, in the present embodiment, instantiating check-valves V5 has the function of the case where flow adjustment, but can also incite somebody to action Check-valves and flow rate regulating valve are connected in series.

In air supply unit 30E, since the state that switching valve V4, check-valves V5 are closed, switching valve V4 is opened.In It is to pass through pressure-air supplying tubing 35 to injector master from the compressed pressure-air AH of booster 14 from first end 31a Body 31 is sent into.Next, opening check-valves V1.It is supplied as a result, from injector body 31 by check-valves V1 to bubble blowing unit 21 Give pressure-air AH.Pressure-air AH flow velocity in injector body 31 gradually rises, and generates negative pressure in flow path 31r.

Next, opening check-valves V5.Then, the air i.e. low-pressure air AL recycled by bubble recoverer 25 is from suction inlet 32 first end 32a has flowed into the check-valves V5 flow adjusted by being able to carry out flow adjustment.It is flowed into the flow path Low-pressure air AL in 32r is introduced from the second end 32b into the flow path 31r of injector body 31, in flow path 31r and high pressure The interflow air AH, is sent into from the second end 31b of injector body 31 to air supply pipe 22.Accordingly, for bubble blowing unit 21, other than pressure-air AH, also supply low-pressure air AL.

It is reduced in device 20E in such frictional resistance, air supply unit 30E and low-pressure air supply unit 40 can be made to select One ground works and supplies air to bubble blowing unit 21.

As a result, for example in the case where shallower draft, can by low-pressure air supply unit 40 by low-pressure air AL2 to gas Blowing unit 21 is steeped to supply, it, can be by air supply unit 30E by pressure-air AH and low-pressure air in the case where absorbing water relatively depth AL is supplied to bubble blowing unit 21.

In addition it is also possible to work at the same time low-pressure air supply unit 40 and air supply unit 30E, for bubble blowing unit 21, other than pressure-air AH, also supply low-pressure air AL and low-pressure air AL2.

It can due to having low-pressure air supply unit 40 and air supply unit 30E according to above-mentioned 5th embodiment Inhibited to consume energy according to drinking water and supplies the air of appropriate amount to bubble blowing unit 21.

From air supply unit 30E supply air in the case where, will by the compressed pressure-air AH of booster 14 and from It is supplied by the low-pressure air AL that the bubble that bubble recoverer 25 recycles obtains to bubble blowing unit 21.Therefore, be capable of increasing from The air mass flow that bubble blowing unit 21 sprays.

In addition, if working at the same time low-pressure air supply unit 40 and air supply unit 30E, it can be for bubble blowing unit 21, other than pressure-air AH, it is also supplied with low-pressure air AL and low-pressure air AL2.Thereby, it is possible to further increase to bubble The air mass flow that blowing unit 21 supplies.

Due to the compressed air that will be sprayed from booster 14 a part as pressure-air AH utilize, do not need for Obtain pressure-air AH and prepare compressor etc., said effect can be obtained with low cost.

Especially in the 5th embodiment, low-pressure air AL is obtained from the bubble recycled by bubble recoverer 25, Therefore any energy is not being needed or cost this respect is advantageous.

In addition, being able to suppress bubble and the stern in hull 11 by recycling low-pressure air AL using bubble recoverer 25 The contact of the propeller 12 of portion 11r setting, is able to suppress the generation of vibration and the decline of propulsive efficiency.

(sixth embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of sixth embodiment of the invention is reduced Device, ship are illustrated.In the sixth embodiment, for part identical with the first to the 5th embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Fig. 6 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in fig. 6, the ship 10 of present embodiment, which has frictional resistance, reduces device 20F.Frictional resistance reduces device 20F has bubble blowing unit 21, bubble recoverer 25, air supply unit 30F.

Air supply unit 30F has injector body 31.Suction inlet 32 is connected in the circumferential lateral surface of injector body 31.

Identically as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.In injector body 31 First end 31a is connected with pressure-air supplying tubing 35, and is connected with air in the second end 31b of injector body 31 and supplies To pipe 22.

In the present embodiment, pressure-air supplying tubing 35 is connected to the discharge side of booster 14.It will be from booster 14 A part of the compressed air of discharge is sent into as pressure-air AH to the first end 31a of injector body 31.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is branched off into two forks by branched pipe 39a and branched pipe 39b.Branched pipe 39a is connect with bubble recoverer 25, point Branch pipe 39b is connect with air blower 62.Air blower 62 makes the atmosphere boosting imported by air introduction pipe 61.That is, low-pressure air supplies To piping 39 using the atmosphere after boosting from the air that the bubble recycled by bubble recoverer 25 obtains and by air blower 62 as Low-pressure air AL is supplied to suction inlet 32.The supply amount of low-pressure air AL based on air blower 62 can be according to from bubble recoverer 25 Flow of recycling air of recycling etc. and suitably change.

Identically as the 5th embodiment, in the air obtained from the bubble recycled by bubble recoverer 25 as low pressure Air AL and the branched pipe 39a of low-pressure air supplying tubing 39 being taken into is equipped with the check-valves V5 for being able to carry out flow adjustment. The interrupted switching valve V6 of the flowing for the air for making to be sent into from air blower 62 is equipped on branched pipe 39b.

In air supply unit 30F, when the state closed from switching valve V4, V6, check-valves V5 starts to open switching valve V4 When, pass through pressure-air supplying tubing 35 to injector master from the compressed pressure-air AH of booster 14 from first end 31a Body 31 is sent into.Next, opening check-valves V1.Pressure-air AH passes through check-valves V1 to bubble from injector body 31 as a result, Blowing unit 21 supplies.Here, the pressure-air AH being sent into from the first end 31a of injector body 31 is in injector body 31 Flow velocity gradually rises, and generates negative pressure in flow path 31r.

Next, due to the negative pressure in injector body 31, being recycled by bubble recoverer 25 when opening check-valves V5 Air, that is, low-pressure air AL from the first end 32a of suction inlet 32 flow into.In addition, passing through after making air blower 62 work Open switching valve V6 and low-pressure air AL is sent into suction inlet 32.The air that is recycled as a result, by bubble recoverer 25 and by rousing Atmosphere, that is, low-pressure air AL after blower 62 boosts flows into injector body 31.The low-pressure air AL being flowed into flow path 32r Out of, the second end 32b is introduced in injector body 31 flow path 31r, collaborate in flow path 31r with pressure-air AH, from spray The second end 31b of emitter main body 31 is sent into air supply pipe 22.It supplies accordingly, for bubble blowing unit 21 in pressure-air It joined air obtained from low-pressure air AL in AH.

According to above-mentioned sixth embodiment, in air supply unit 30F, by the compressed pressure-air AH of booster 14 with From the air recycled from bubble recoverer 25 and by air blower 62 boost after atmosphere obtain low-pressure air AL interflow to Bubble blowing unit 21 supplies.Therefore, it is capable of increasing the air mass flow sprayed from bubble blowing unit 21.Especially implement the 6th In mode, a part of low-pressure air AL is not required to using the air obtained from the bubble recycled by bubble recoverer 25 Want any energy, cost.Further, since using by air blower 62 boost after atmosphere used as low-pressure air AL, therefore from by When the underfed for the low-pressure air AL that the bubble that bubble recoverer 25 recycles obtains etc., it is capable of increasing the stream of low-pressure air AL Amount.

(the 7th embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 7th embodiment of the invention is reduced Device, ship are illustrated.In the 7th embodiment, for first to the identical part of sixth embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Fig. 7 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in fig. 7, the ship 10 of present embodiment, which has frictional resistance, reduces device 20G.The frictional resistance reduces dress It sets 20G and has bubble blowing unit 21 and air supply unit 30G.

Air supply unit 30G has injector body 31.Suction inlet 32 is connected in the circumferential lateral surface of injector body 31.

Identically as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.In injector body 31 First end 31a is connected with pressure-air supplying tubing 35, is connected with air supply in the second end 31b of injector body 31 Pipe 22.

In the present embodiment, pressure-air supplying tubing 35 connects such as with high pressure air supply source 37 turbo-compressor It connects.

Switching valve V2 is equipped in a manner of it can be opened and closed in low-pressure air supplying tubing 39.Switching valve V2 makes from low pressure sky The flowing of gas supplying tubing 39 to the low-pressure air of injector body 31 is interrupted.

In air supply unit 30G, in the state that switching valve V2 is closed, start pressure-air supply source 37.Then, In injector body 31, pressure-air AH is sent by pressure-air supplying tubing 35 to flow path 31r from first end 31a. Next, opening check-valves V1.Pressure-air AH is supplied by check-valves V1 to bubble blowing unit 21 as a result,.From injector master The pressure-air AH that the first end 31a of body 31 is sent into flow velocity in injector body 31 gradually rises, and generates in flow path 31r Negative pressure.

Next, opening switching valve V2.Then, the low pressure being made of the atmosphere being taken into from low-pressure air supplying tubing 39 is empty Gas AL is flowed into from the first end 32a of suction inlet 32 into flow path 32r by the negative pressure in injector body 31.It is flowed into Low-pressure air AL in the 32r of road is introduced into from the second end 32b into the flow path 31r of injector body 31, in flow path 31r with The interflow pressure-air AH.The air collaborated in flow path 31r is from the second end 31b of injector body 31 to air supply pipe 22 are sent into.It joined air obtained from low-pressure air AL in pressure-air AH accordingly, for the supply of bubble blowing unit 21.

It, will be by the high pressures air supply source such as turbo-compressor in air supply unit 30G according to above-mentioned 7th embodiment 37 compressed pressure-air AH and atmosphere, that is, low-pressure air AL are supplied to bubble blowing unit 21.Therefore, it is capable of increasing from bubble The air mass flow that blowing unit 21 sprays.

In this way, being inhibited by the air sprayed from bubble blowing unit 21 in hull 11 and water with less consumption energy Between the frictional resistance that generates realize to be cut down by fuel consumption and generate so as to inhibit the loss of the propulsive force for hull The raising of energy-saving effect, CO₂Effective reduction of discharge rate.

In such a configuration, air supply unit 30G configuration does not need and quarter in the bow portion side 11f of hull 11 The piping of the connections such as the booster 14 of the side 11r.As a result, device structure simplifies, can be realized cost effective.

(the 8th embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 8th embodiment of the invention is reduced Device, ship are illustrated.In the 8th embodiment, for part identical with the first to the 7th embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Fig. 8 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 8, the ship 10 of present embodiment, which has frictional resistance, reduces device 20H.Frictional resistance reduces device 20H has bubble blowing unit 21, bubble recoverer 25, air supply unit 30H.

Air supply unit 30H has injector body 31.Suction inlet 32 is connected in the circumferential lateral surface of injector body 31. Identically as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.In the first end of injector body 31 31a is connected with pressure-air supplying tubing 35, is connected with air supply pipe 22 in the second end 31b of injector body 31.This The pressure-air supplying tubing 35 of embodiment is connect such as with high pressure air supply source 37 turbo-compressor.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is connect with bubble recoverer 25, empty as low pressure from the air that bubble obtains is recycled by the bubble recoverer 25 Gas AL is taken into suction inlet 32.

It is empty in the low pressure that the air obtained from the bubble recycled by bubble recoverer 25 is taken into as low-pressure air AL Gas supplying tubing 39 is equipped with check-valves V5.

Make pressure-air supply source 37 since the state that check-valves V1, check-valves V5 are closed in air supply unit 30H Starting.As a result, in injector body 31, height is sent into flow path 31r from first end 31a by pressure-air supplying tubing 35 Press air AH.Next, opening check-valves V1.Pressure-air AH is supplied by check-valves V1 to bubble blowing unit 21 as a result,.From The pressure-air AH that the first end 31a of injector body 31 is sent into flow velocity in injector body 31 gradually rises, in flow path Negative pressure is generated in 31r.

Next, opening check-valves V5.Then, the air i.e. low-pressure air AL recycled by bubble recoverer 25 is from suction inlet 32 first end 32a is flowed into.The air recycled as a result, by bubble recoverer 25 i.e. low-pressure air AL from suction inlet 32 first End 32a is flowed into injector body 31.Low-pressure air AL in flow path 32r is flowed into from the second end 32b by injection It introduces, collaborates in flow path 31r with pressure-air AH, from the second end of injector body 31 in the flow path 31r of device main body 31 31b is sent into air supply pipe 22.It joined low-pressure air AL in pressure-air AH accordingly, for the supply of bubble blowing unit 21 Obtained from air.

According to above-mentioned 8th embodiment, in air supply unit 30H, by the high pressures such as turbo-compressor air supply source 37 Compressed pressure-air AH collaborates with the low-pressure air AL recycled by bubble recoverer 25, and supplies to bubble blowing unit 21. Therefore, it is capable of increasing the air mass flow sprayed from bubble blowing unit 21.Identically as sixth embodiment, low-pressure air AL is from logical The bubble for crossing the recycling of bubble recoverer 25 obtains, therefore does not need any energy, cost.Low-pressure air AL is under hull bottom 11b Fang Jinhang recycling, therefore the pressure rise compared to the atmosphere of above-mentioned 7th embodiment, with phase the case where boosting to atmosphere Than energy efficiency can be further increased.

(the 9th embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 9th embodiment of the invention is reduced Device, ship are illustrated.In the 9th embodiment, for part identical with the first~the 8th embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Fig. 9 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 9, the ship 10 of present embodiment, which has frictional resistance, reduces device 20J.Frictional resistance reduces device 20J has bubble blowing unit 21, air supply unit 30J.

Air supply unit 30J has injector body 31.Suction inlet 32 is connected in the circumferential lateral surface of the injector body 31. Identically as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.In the first end of injector body 31 31a is connected with pressure-air supplying tubing 35, is connected with air supply pipe 22 in the second end 31b of injector body 31.This The pressure-air supplying tubing 35 of embodiment is connect such as with high pressure air supply source 37 turbo-compressor.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is connected to the discharge side of booster 14, and a part for the compressed air being discharged from the booster 14 is as low pressure sky Gas AL is sent into the first end 31a of injector body 31.Present embodiment assumes that in the lesser situation of the output of host 13 Structure.After the compressed air ratio sprayed from the booster 14 of present embodiment is compressed by the high pressures such as compressor air supply source 37 Pressure-air AH low pressure, therefore can as low-pressure air AL utilize.

It is equipped in a manner of it can be opened and closed in the low-pressure air supplying tubing 39 for being taken into low-pressure air AL from booster 14 Switching valve V4.Switching valve V4 make the low-pressure air AL from flowing from low-pressure air supplying tubing 39 to injector body 31 discontinuously and Adjust its flow.

In air supply unit 30J, in the state that switching valve V4 is closed, pressure-air supply source 37 is made to work.Then, Pressure-air AH is sent into from pressure-air supply source 37 to the first end 31a of injector body 31.Next, opening check-valves V1.Pressure-air AH flow velocity in injector body 31 gradually rises, and generates negative pressure in flow path 31r.

Next, opening switching valve V4.Then, the low-pressure air AL sent out from booster 14 is due in injector body 31 Negative pressure, from the first end 32a of suction inlet 32 flow into.Low-pressure air AL in flow path 32r is flowed into from the second end 32b It is introduced in the flow path 31r of injector body 31, collaborates in flow path 31r with pressure-air AH, from injector body 31 The second end 31b is sent into air supply pipe 22.It joined in pressure-air AH accordingly, for the supply of bubble blowing unit 21 low Press air obtained from air AL.

According to above-mentioned 9th embodiment, by the compressed pressure-air AH of the high pressures such as compressor air supply source 37 and by The compressed low-pressure air AL of booster 14 collaborates and supplies to bubble blowing unit 21.Therefore, it is capable of increasing from bubble blowing unit 21 air mass flows sprayed.Especially low-pressure air AL utilizes a part of the compressed air sprayed from booster 14, therefore energy Enough further increase the air mass flow sprayed from bubble blowing unit 21.

(the tenth embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the tenth embodiment of the invention is reduced Device, ship are illustrated.In the tenth embodiment, for part identical with the first~the 9th embodiment, mark Identical appended drawing reference is illustrated, and omits repeated explanation.

Figure 10 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in Figure 10, the ship 10 of present embodiment, which has frictional resistance, reduces device 20K.Frictional resistance reduces device 20K has bubble blowing unit 21, bubble recoverer 25, air supply unit 30K, low-pressure air supply unit 40.

The air supply unit 30K of present embodiment has concatenated two injector bodies 31.With the respective embodiments described above Equally, these injector bodies 31 have the flow path 31r of cone cell.Upstream is configured in the injector body 31 of series connection The first end 31a of the injector body 31A of side is connected with pressure-air supplying tubing 35.In the injector for being configured at upstream side The second end 31b of main body 31A is connected with connecting tube 49.The first end 31a of the injector body 31B in downstream side is via connection Pipe 49 and connect with the injector body 31A of upstream side.In the second end 31b connection of the injector body 31B in the downstream side There is air supply pipe 22.

The pressure-air supplying tubing 35 of present embodiment is connected to the discharge side of booster 14, is discharged from booster 14 The first end 31a of injector body 31 of a part of compressed air as pressure-air AH to the upstream side is sent into.

It is connected separately in the first end 32a of the suction inlet 32 set on injector body 31A, 31B in branched halfway Low-pressure air supplying tubing 39.The low-pressure air supplying tubing 39 of present embodiment is connect with bubble recoverer 25.It is low by this Air supplying tubing 39 is pressed, the air obtained from the bubble recycled by bubble recoverer 25 is as low-pressure air AL to each suction Entrance 32 distributes.

It is empty in the low pressure that the air obtained from the bubble recycled by bubble recoverer 25 is taken into as low-pressure air AL Gas supplying tubing 39 is equipped with check-valves V51.

Switching valve V7 is equipped in the low-pressure air supplying tubing 39 towards the injector body 31A branch of upstream side.It is logical It crosses and opens switching valve V7, becoming low-pressure air AL can be respectively facing what injector body 31A and injector body 31B was shunted State.By closing switching valve V7, becoming can be only to the state of injector body 31B supply low-pressure air AL.

In air supply unit 30K, cut when the state closed from switching valve V4, switching valve V7, check-valves V51 starts to open It is upward by pressure-air supplying tubing 35 from first end 31a by the compressed pressure-air AH of booster 14 when changing valve V4 The injector body 31A for swimming side is sent into.Next, opening check-valves V1.Injector of the pressure-air AH from series connection as a result, Each injector body 31 of main body 31A and injector body 31B is supplied by check-valves V1 to bubble blowing unit 21.

The pressure-air AH that the flow path 31r of injector body 31A to the upstream side is sent into flow velocity in injector body 31A It gradually rises, generates negative pressure in flow path 31r.The pressure-air AH sent out from the injector body 31A of upstream side is via even The injector body 31B of adapter tube 49 downstream is sent into.The pressure-air AH for being sent to the flow path 31r of injector body 31B exists Flow velocity gradually rises in injector body 31B, generates negative pressure in flow path 31r.

Next, opening check-valves V51.Then, due to the negative pressure in the injector body 31 of injector body 31B, lead to The air i.e. low-pressure air AL for crossing the recycling of bubble recoverer 25 is flowed from the first end 32a of the suction inlet 32 of injector body 31B Enter.

In addition, low-pressure air AL is low by the injector body 31A branch towards upstream side if opening switching valve V7 Pressure air supplying tubing 39 is also fed to the suction inlet 32 of the injector body 31A of upstream side.It is flowed into the spray of upstream side as a result, Low-pressure air AL in the flow path 32r of emitter main body 31A is introduced into the flow path 31r of injector body 31A, in flow path 31r Collaborate with pressure-air AH, is sent out from the second end 31b of the injector body 31A of upstream side.

The low-pressure air AL being flowed into the flow path 32r of the suction inlet 32 of injector body 31B is introduced in injector master In the flow path 31r of body 31B, collaborate in flow path 31r with air (AH+AL), the air (AH+AL+AL) at the interflow is from downstream side Injector body 31B the second end 31b send out.

It is reduced in device 20K in such frictional resistance, air supply unit 30K and low-pressure air supply unit 40 can be made to select One ground works and supplies air to bubble blowing unit 21.

As a result, for example, in the case where shallower draft, in the state that switching valve V4, V51, V7 and check-valves V51 are closed Under, make air blower 42 work, make check-valves V3 open, so as to using low-pressure air supply unit 40 by low-pressure air AL2 to Bubble blowing unit 21 supplies.

In the case where absorbing water relatively depth, in the state that check-valves V1, V3, V51, switching valve V4, V7 are closed, with this implementation Mode in the same manner, can supply the air (AH+AL+AL) collaborated in air supply unit 30K to bubble blowing unit 21.

Low-pressure air supply unit 40 and air supply unit 30K can also be made to work at the same time, using air supply unit 30K for The air (AH+AL+AL) at the supply of bubble blowing unit 21 interflow and low-pressure air AL2 this two side.

It is multiple by the way that injector body 31 to be connected in series according to above-mentioned tenth embodiment, and can make more low Air AL and pressure-air AH is pressed to collaborate.Therefore, the air mass flow supplied to bubble blowing unit 21 can be further increased.

In the present embodiment, as air supply unit 30K, with illustrating two stages feelings of in-line educator main body 31 Condition, as long as but be connected in series injector body 31 number be it is multiple, however it is not limited to two stages.For example, it is also possible to go here and there The injector body 31 more than stage of connection connection three.

(the 11st embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 11st embodiment of the invention is dropped Low device, ship are illustrated.In the 11st embodiment, for part identical with the first to the tenth embodiment, It marks identical appended drawing reference to be illustrated, and omits repeated explanation.

Figure 11 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 11, the ship 10 of present embodiment, which has frictional resistance, reduces device 20L.Frictional resistance reduces device 20L has bubble blowing unit 21, bubble recoverer 25, air supply unit 30L, low-pressure air supply unit 40.

Air supply unit 30L has injector body 31, gasing tank 60.Suction inlet 32 is connected in injector body 31.

Identically as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.In injector body 31 First end 31a is connected with pressure-air supplying tubing 35, is connected with air supply in the second end 31b of injector body 31 Pipe 22.The pressure-air supplying tubing 35 of present embodiment is connected to the discharge side of booster 14, by what is be discharged from booster 14 A part of compressed air is sent into as pressure-air AH to the first end 31a of injector body 31.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is connected to bubble recoverer 25, and the air obtained from the bubble recycled by bubble recoverer 25 is as low pressure sky Gas AL is taken into atmosphere to suction inlet 32.

The middle part of pressure-air supplying tubing 35 is arranged in gasing tank 60.It can accumulate in the gasing tank 60 a certain amount of The pressure-air AH passed through in pressure-air supplying tubing 35.That is, pressure-air AH is passing through pressure-air supplying tubing 35 midway temporarily lodges in gasing tank 60, then, via pressure-air supplying tubing 35 to the first end of injector body 31 Portion 31a is sent into.

In pressure-air supplying tubing 35, it is equipped with flow in a manner of it can be opened and closed in the downstream side of gasing tank 60 and adjusts Valve V8.The pressure-air AH of flow corresponding with the aperture of flow rate regulating valve V8 is supplied from gasing tank 60 to injector body 31 It gives.That is, the aeration quantity of the pressure-air AH inflated to gasing tank 60 can be adjusted by flow rate regulating valve V8.

In air supply unit 30L, beaten when the state closed since switching valve V4, flow rate regulating valve V8, check-valves V5 When opening switching valve V4, filled from the compressed pressure-air AH of booster 14 by pressure-air supplying tubing 35 to gasing tank 60 Gas.Next, flow rate regulating valve V8 is opened, and then when opening check-valves V1, by the compressed pressure-air AH's of booster 14 A part is sent by pressure-air supplying tubing 35 to the flow path 31r of injector body 31 from gasing tank 60.It is sent to flow path 31r The pressure-air AH entered flow velocity in injector body 31 gradually rises, and generates negative pressure in flow path 31r.Pressure-air AH is in height The midway of pressure air supplying tubing 35 temporarily lodges in gasing tank 60.Gasing tank 60 is lodged in this way, can reduce high pressure sky The pulsation of gas AH.

Next, opening check-valves V5.Then, it due to the negative pressure in injector body 31, is recycled by bubble recoverer 25 Air, that is, low-pressure air AL from the first end 32a of suction inlet 32 flow into.The low-pressure air AL quilt being flowed into flow path 32r It introduces into the flow path 31r of injector body 31, collaborates in flow path 31r with pressure-air AH, from the of injector body 31 Two end 31b are sent out.It joined obtained from low-pressure air AL in pressure-air AH accordingly, for the supply of bubble blowing unit 21 Air.

The frictional resistance, which reduces device 20L, can make air supply unit 30L and low-pressure air supply unit 40 alternatively work And air is supplied to bubble blowing unit 21.As a result, for example, in the case where shallower draft, low-pressure air supply unit can be passed through 40 supply low-pressure air AL2 to bubble blowing unit 21, in the case where absorbing water relatively depth, can be incited somebody to action by air supply unit 30L Pressure-air AH and low-pressure air AL is supplied to bubble blowing unit 21.By making low-pressure air supply unit 40 and air supply unit 30L is worked at the same time, and can supply pressure-air AH, low-pressure air AL and low-pressure air AL2 to bubble blowing unit 21 simultaneously.

According to above-mentioned 11st embodiment, especially make the pressure-air AH supplied to injector body 31 via inflation Tank 60, therefore it is able to suppress the influence in the pulsation of the pressure-air AH of the outlet side generation of booster 14.Accordingly, for injection Device main body 31 can supply pressure-air AH with stable flow.As a result, low pressure can be made empty in injector body 31 Gas AL steadily collaborates with pressure-air AH, and can steadily generate bubble from bubble blowing unit 21.

(the 12nd embodiment)

Next, being based on attached drawing, the frictional resistance of the air lubrication formula ship of the 12nd embodiment of the invention is dropped Low device, ship are illustrated.In the 12nd embodiment, for part identical with the first~the 5th embodiment, It marks identical appended drawing reference to be illustrated, and omits repeated explanation.

Figure 12 is to indicate that the frictional resistance of the air lubrication formula ship of present embodiment reduces the overall structure of device, ship Schematic diagram.

As shown in figure 12, the ship 10 of present embodiment, which has frictional resistance, reduces device 20M.Frictional resistance reduces device 20M has bubble blowing unit 21, bubble recoverer 25, air supply unit 30M.

Air supply unit 30M has injector body 31, gasing tank 70.

Identically as the respective embodiments described above, injector body 31 has the flow path 31r of cone cell.In injector body 31 First end 31a is connected with pressure-air supplying tubing 35, and is connected with air in the second end 31b of injector body 31 and supplies To pipe 22.The pressure-air supplying tubing 35 of present embodiment is connect such as with high pressure air supply source 37 turbo-compressor.

The middle part of pressure-air supplying tubing 35 is arranged in gasing tank 70,60 phase of gasing tank with the 11st embodiment With ground, a certain amount of pressure-air AH passed through in pressure-air supplying tubing 35 can be accumulated.That is, being supplied by pressure-air The compressed pressure-air AH in source 37 temporarily lodges in gasing tank 70 in the midway for passing through pressure-air supplying tubing 35, then, It is sent into the first end 31a of injector body 31.

Low-pressure air supplying tubing 39 is connected in the first end 32a of suction inlet 32.The low-pressure air of present embodiment Supplying tubing 39 is connected to bubble recoverer 25, and the air obtained from the bubble recycled by bubble recoverer 25 is as low pressure sky Gas AL is taken into suction inlet 32.

In pressure-air supplying tubing 35, it is equipped with flow in a manner of it can be opened and closed in the downstream side of gasing tank 70 and adjusts Valve V9.Flow rate regulating valve V9 has gasing tank 70 identical with function of the flow rate regulating valve V8 for above-mentioned gasing tank 60 Function.

In air supply unit 30M, since the state that check-valves V1, V5, flow rate regulating valve V9 are closed, make pressure-air Supply source 37 starts.Then, the pressure-air AH after being pressurizeed from pressure-air supply source 37 is inflated to gasing tank 70.Next, When opening flow rate regulating valve V9, the pressure-air AH for aerating gasing tank 70 is sent into the flow path 31r of injector body 31.By This, check-valves V1 is opened.Accumulate pressure-air AH in gasing tank 70 in this way, the pulsation of pressure-air AH can be reduced.

The pressure-air AH being sent into flow path 31r flow velocity in injector body 31 gradually rises, and generates in flow path 31r Negative pressure.Then, sky check-valves V5 opened, and recycled by bubble recoverer 25 by the negative pressure in injector body 31 Gas, that is, low-pressure air AL is flowed into from the first end 32a of suction inlet 32.Low-pressure air AL in flow path 32r is flowed by spray It introduces, collaborates in flow path 31r with pressure-air AH, from the second end of injector body 31 in the flow path 31r of emitter main body 31 Portion 31b is sent out.It joined sky obtained from low-pressure air AL in pressure-air AH accordingly, for the supply of bubble blowing unit 21 Gas.

According to above-mentioned 12nd embodiment, the pressure-air AH supplied to injector body 31 passes through gasing tank 70, because This is able to suppress along with the work of the high pressures such as compressor air supply source 37 and generates identically as the 11st embodiment The pulsation of pressure-air AH.As a result, bubble can steadily be generated from bubble blowing unit 21.

(other variations)

The present invention is not limited to the respective embodiments described above, also include to upper without departing from the spirit and scope of the invention Stating embodiment joined the structure of various changes.That is, specific shape, structure enumerated in embodiments etc. is only An example can suitably change.

For example, structure disclosed in the respective embodiments described above can be appropriately combined.

Industrial utilizability

The present invention can be suitable for reducing to air is sprayed around hull above-mentioned hull and around water between generate Frictional resistance air lubrication formula ship frictional resistance reduce device.Device is reduced according to the frictional resistance, is able to suppress The increase of parts count simultaneously ensures required air mass flow, can obtain sufficient energy-saving effect, CO₂Discharge rate cuts down effect.

Description of symbols

10 ships (air lubrication formula ship)

11 hulls

11b hull bottom

11f bow portion

11r quarter

12 propellers

12s rotary shaft

13 hosts

14 boosters (pressure-air supply source, subsidiary engine)

20A, 20B, 20C, 20D, 20E, 20F, 20G, 20H, 20J, 20K, 20L, 20M friction reduce device

21 bubble blowing units

22 air supply pipes

25 bubble recoverers

30A, 30C, 30D, 30E, 30F, 30G, 30H, 30J, 30K, 30L, 30M air supply unit

31,31A, 31B injector body (injector)

31a first end

31b the second end

31r flow path

32 suction inlets

32a first end

32b the second end

32r flow path

35 pressure-air supplying tubings

37 pressure-air supply sources

38 low-pressure air supply sources

39 low-pressure air supplying tubings

39a branched pipe

39b branched pipe

40 low-pressure air supply units (air boosting section)

41 air introduction pipes

41a first end

41b the second end

42 air blowers

43 air supply pipes

49 connecting tubes

60,70 gasing tank

61 air introduction pipes

62 air blowers

AH pressure-air

AL low-pressure air

AL2 low-pressure air

L water line

V1 check-valves

V2 switching valve

V3 check-valves

V4 switching valve

V4 ' switching valve

V5 check-valves

V6 switching valve

V7 switching valve

V8 flow rate regulating valve

V9 flow rate regulating valve

V51 check-valves

Claims

1. the frictional resistance of air lubrication formula ship a kind of reduces device, to hull around spray air to reduce in the hull The frictional resistance generated between the water of surrounding,

The frictional resistance of the air lubrication formula ship, which reduces device, to be had:

Low-pressure air supplying tubing forms opening into atmosphere, is sent into atmosphere；

Injector has the flow path for the pressure-air flowing supplied from pressure-air supply source, and introduces into the flow path The atmosphere being sent by the low-pressure air supplying tubing is lower than the low-pressure air of the pressure-air as pressure；And

Bubble blowing unit is sprayed by the pressure-air that will be discharged from the injector and the low-pressure air, and in institute It states and generates bubble around hull.

2. the frictional resistance of air lubrication formula ship according to claim 1 reduces device, wherein

The flow path from the upstream side toward the downstream side and flow path cross sectional area is gradually reduced.

3. the frictional resistance of air lubrication formula ship according to claim 1 or 2 reduces device, wherein

The pressure-air supply source is the host for promoting the hull or the subsidiary engine to host gas supply.

4. the frictional resistance of air lubrication formula ship according to claim 1 or 2 reduces device, wherein

The pressure-air supply source is the compressor compressed to atmosphere.

5. the frictional resistance of air lubrication formula ship according to claim 1 or 2 reduces device, wherein

The frictional resistance of the air lubrication formula ship reduces device and is also equipped with recycling from described in bubble blowing unit ejection The bubble recoverer of bubble,

The low-pressure air is to be taken by the bubble of bubble recoverer recycling and from atmosphere and compressed by air blower Air afterwards.

6. the frictional resistance of air lubrication formula ship according to claim 1 or 2 reduces device, wherein

The low-pressure air is to have carried out compressed air to the air being taken into from atmosphere by air blower.

7. the frictional resistance of air lubrication formula ship a kind of reduces device, to hull around spray air to reduce in the hull The frictional resistance generated between the water of surrounding,

Injector has the flow path for the pressure-air flowing supplied from pressure-air supply source, and introduces into the flow path Pressure is lower than the low-pressure air of the pressure-air；

Bubble blowing unit is sprayed by the pressure-air that will be discharged from the injector and the low-pressure air, and in institute It states and generates bubble around hull；And

Booster compresses combustion air and is supplied to the host for promoting the hull,

The low-pressure air is by the air after the compressed.

8. the frictional resistance of air lubrication formula ship a kind of reduces device, to hull around spray air to reduce in the hull The frictional resistance generated between the water of surrounding,

Air boosting section is compressed the air being taken into from atmosphere and is supplied to the bubble blowing unit,

The frictional resistance of the air lubrication formula ship reduces device can be alternatively from the air boosting section and the injection At least one party in device supplies air to the bubble blowing unit.

9. according to claim 1, the frictional resistance of air lubrication formula ship described in any one of 7,8 reduces device, wherein

The frictional resistance of the air lubrication formula ship, which reduces device and is also equipped in the upstream side of the injector, temporarily accumulates institute State the gasing tank of pressure-air.

10. a kind of ship, the frictional resistance for having air lubrication formula ship described in any one of claim 1,7,8 reduces dress It sets.