JPH07196086A - Propulsion device - Google Patents

Abstract

PURPOSE:To provide instantaneous injection force by amplifying injection force of water as propulsion force of a ship by using negative pressure to be generated by injection force of compressed air. CONSTITUTION:A propulsion device is composed of an injection device for injecting water, an injection pipe 2 for injecting the water as propulsion force, and a propulsion force increasing device for increasing injection force of water by compressed air, and the injection device is composed of a water feed-out injection machine 15 and an injection nozzle 11 arranged in the injection pipe 2, and for injecting water fed from the water feed-out injection machine 15. The propulsion force increasing device is composed of an air compressor 1 and a compressed air injecting part for injecting compressed air from the air compressor 7 in the direction to injecting water from the periphery of the injection nozzle 11, and the injection pipe 2 is so formed as to have instantaneous injection force by forming the passage from the injection nozzle 11 to the injection part 3 through the injection pipe 2 larger than the water feed-out passage 12 from the water feed-out injection machine 15 to the injection nozzle 11, and further increasing injection force by using negative pressure to be generated by injection force of compressed air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ship propulsion device in which water jetting force, which is a propulsive force of a ship, is further amplified by utilizing a negative pressure generated by the jetting force of compressed air to have instantaneous force. Regarding

[0002]

2. Description of the Related Art Conventionally, power for propelling a ship is roughly classified into a screw system and a jet system for ejecting water backward.

[0003]

However, in the case of the screw method, the instantaneous force at the beginning of movement is inevitably lacking,
If it is attempted to compensate for this, there is a problem that the device itself becomes large because a high-power engine is required.

Further, in the case of the jet system, since water itself is jetted to provide a propulsive force, there is instantaneous power to some extent, but the required propulsive force can be obtained unless the pump itself for jetting water is large. However, there was a problem that a large device was required for the hull.

In view of the above-mentioned problems, the present invention provides a propulsion device for a ship, which does not require a large device, is rich in instantaneous power, and can change the direction of the propulsive force freely. The object of the present invention is to make it possible to easily perform the propulsion control of the ship by making it possible to easily turn right and left and brake by the reverse injection.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to an injection device for injecting water at a place where a ship is located, an injection pipe for injecting the injected water as a propulsive force in a predetermined direction, and an injection by the force of compressed air. The injection device includes a propulsion power amplifying device that increases the ejection force of water, and the injection device is arranged in a jet pipe and a water delivery injector that injects the water delivered from the water delivery injector as propulsion force. And a compressed air injection unit for injecting compressed air from the air compressor in the direction in which water is injected from the periphery of the injection nozzle. The injection pipe is formed so that the inner diameter of the passage from the injection nozzle to the injection port where the tip of the injection pipe is narrowed is larger than the inner diameter of the water delivery passage from the water delivery injector to the injection nozzle. Due to To solve the problems mentioned.

Further, in particular, at the injection port at the tip of the injection pipe, a rudder blade that appropriately guides the direction of the jet water flow to the left and right, and a forward / reverse injection mechanism that converts the jet water flow into a forward flow and a reverse flow by operating the operating rod. By providing and, the above-mentioned problems are solved.

[0008]

The propulsion device for a ship according to the present invention causes the water in the place where the ship is located to be jetted in the jet pipe in the direction in which it is jetted as the propulsive force from the jet nozzle by the jet device. When the compressed air from the air compressor is jetted in the direction of jetting water from around the jet nozzle, a negative pressure state appears in front of the tip of the jet nozzle due to the inertial force of the compressed air. Will further increase the jet output of the jet water.

At that time, if the inner diameter of the passage to the constricted injection port of the injection pipe is made larger than the inner diameter of the water delivery passage from the water delivery injector to the injection nozzle, the water ejected from the injection nozzle (compressed) is compressed. (Including air), the internal volume of the injection pipe increases, so that the momentum apparently temporarily weakens until it fills the inside.

However, since the injection port is actually narrowed to some extent, the water filled inside has the injection energy of the injection device and the energy of the compressed air from the air compressor. It is jetted at once from the outlet, and its energy becomes extremely large instantaneously.

After the injection is instantaneously performed, the injection force is weakened until the inside of the injection pipe is filled again, and when the injection is filled again, the fuel is injected from the jet outlet all at once.
Therefore, the injection is performed intermittently.

Then, a large momentary propulsion force can be obtained, so that a momentary propulsion force can be obtained without requiring much power.

Here, at the injection port at the tip of the injection pipe, there is provided a rudder plate that appropriately guides the direction of the jet water flow to the left and right, and a forward / reverse injection mechanism that converts the jet water flow into a forward flow and a reverse flow by operating the operating rod. By providing the backflow, a strong braking effect can be obtained especially when the reverse flow is performed, and the propulsion control of the ship can be efficiently performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings.

That is, reference numeral 1 shown in the drawing is a propulsion device of the ship S, and an injection device for injecting water W at a place where the ship is located and an injection pipe 2 for injecting the injected water as a propulsive force in a predetermined direction. And a propulsion force amplifying device that increases the jetting force of water to be jetted by the force of compressed air.

The injection device is composed of a pump 15 as a water delivery injector, and an injection nozzle 11 arranged in the injection pipe 2 for injecting water pumped out as a propulsion force. Specifically, the water delivery pipe 13 is fitted from one end side of the injection pipe 2, the inside thereof is used as the injection passage 2a, and the pump 15 is connected to one end of the water delivery pipe 13 via the connecting tool 14. The other end of the delivery pipe 13 is formed as the injection nozzle 11.

Next, the propulsion power amplifying apparatus is provided with a compressor 7 as an air compressor and a compressed air injecting section for injecting the compressed air from the compressor 7 from around the injection nozzle 11 in a direction of injecting water. The compressed air jetting unit forms compressed air sent from the compressor 7 through the air supply pipe 6a into the air passage 6 formed around the other end of the water delivery pipe 13 from the air intake port 5. The compressed air in the air passage 6 is formed so as to be jetted from the outlet 4 in the direction of jetting water.

The injection pipe 2 is a passage from the injection nozzle 11 to the injection port 3 where the tip of the injection pipe 2 is narrower than the inner diameter of the water delivery passage 12 from the pump 15 to the injection nozzle 11. The inner diameter of 2a is formed large.

The propulsion device 1 thus formed is shown in FIG.
As shown in, the water is installed under the surface of the water W of the ship S.

On the other hand, another embodiment is shown in FIGS.
As shown in FIG. 3, a steering plate 32 that guides the direction of the jet water flow to the right and left at the jet port 3 at the tip of the jet pipe 2, and a forward / reverse flow that converts the jet water flow into a normal flow and a reverse flow by operating the operating rod 22. The injection mechanism 21 is provided.

The rudder blade 32 is installed on both lateral sides of the injection port 3 so as to be swingable in the lateral direction, and a steering mechanism 31 pivotally supported by a support shaft 34 and one end of the steering mechanism 31 are swingable. The rudder plate 32 is formed by a link mechanism so that the rudder plate 32 cooperates with the rudder operation side rod 35 to which the intermediate portion is connected and swings to the left and right, thereby appropriately changing the direction of the jet water flow from the jet port 3.

On the other hand, the forward / reverse injection mechanism 21 is provided with a base body 21a which is connected to the end portion of the injection pipe 2 of the propulsion device 1 and in which the forward / reverse water flow switching cylinder 23 is contained. And the base 21a
Has the injection port 3 in the center of the front side and the reverse injection port 25 on both sides of the rear side.
Are formed respectively, and the ends of the injection pipe 2 are connected to the center of the rear side. Further, in the forward / reverse water flow changing cylinder 23, the forward injection port 24 matching the injection port 3 is provided at one location on the central peripheral surface, and the reverse injection port 24 is provided on both sides of the position shifted by approximately 90 ° with respect to the forward injection port 24. There is a mating port 26 that matches the jetting port 25, and the portion of the jetting pipe 2 that communicates with the end portion of the jetting pipe 2 is wide enough to be constantly communicated even if it is rotated at least 90 ° or more. An introduction port 23a is provided.

As a result, the forward / reverse water flow changing cylinder 23 is rotated by approximately 90 ° by the swing of the operating rod 22, so that the injection port 3 and the normal injection port 24 are aligned with each other, or vice versa. The mating port 26 can be switched to match, and is formed so as to reverse the direction of the jet water flow from the jet pipe 2.

Needless to say, the present invention is not limited to the above-mentioned embodiments.

[0025]

According to the present invention thus formed, the water W at the place where the ship is located is jetted by the jetting device in the jet pipe 2 in the direction in which it is jetted as the propulsion force from the jet nozzle 11. At that time, the propulsion is performed. When the compressed air from the air compressor 7 is jetted from the periphery of the jet nozzle 11 in the direction of jetting water by the force amplifying device, a negative pressure is generated in front of the tip of the jet nozzle 11 by the inertial force of the compressed air. The state appears, and the jetting force of jetting water from the jet nozzle 11 is further increased.

Then, at that time, the inner diameter of the passage to the narrowed injection port 3 in the injection pipe 2 is set to the water delivery injector 15
If it is made larger than the inner diameter of the water delivery passage 12 from the injection nozzle 11 to the injection nozzle 11, the water (including the compressed air) ejected from the injection nozzle 11 increases in the internal volume of the injection pipe 2, and thus the water is filled up to the inside. Although it seems that the momentum has temporarily weakened, the injection port 3 is actually constricted to some extent, so the water that has filled the inside is generated by the injection energy of the injection device and the compressed air from the air compressor 7. Since it has energy, it is jetted at once from the ejection port 3, and its energy becomes very large instantaneously.

As a result, after the injection is instantaneously performed, the injection force is weakened until the inside of the injection pipe is filled again, and when the injection is filled again, the fuel is injected from the jet outlet all at once.
The injection is performed intermittently.

In this case, a large momentary propulsive force can be obtained, so that a momentary propulsive force can be obtained without requiring much power.

At the injection port 3 at the tip of the injection pipe 2, a rudder blade 32 that appropriately guides the direction of the jet water flow to the left and right, and a forward / reverse flow that converts the jet water flow into a forward flow and a reverse flow by operating the operating rod 22. Since the injection mechanism 21 is provided, a strong braking effect can be obtained particularly when the reverse flow is performed, and the propulsion control of the ship can be efficiently performed.

Therefore, the propulsion device of the ship does not require a large device, is rich in instantaneous force, and the direction of the propulsive force can be freely changed to easily turn left and right and brake by reverse injection. As a result, the propulsion control of the ship can be efficiently performed, and the device itself is very simple, so that various advantageous effects such as low cost can be provided.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention.

FIG. 2 is a schematic view of a state where the propulsion device for a ship according to an embodiment of the present invention is attached to the ship.

FIG. 3 is a perspective view of an essential part of a state in which a rudder blade and a forward / reverse injection mechanism are attached in another embodiment of the present invention.

FIG. 4 is a plan view of an essential part in a state where a rudder blade and a forward / reverse injection mechanism are attached in another embodiment of the present invention.

5 is a view taken along the line VV in FIG.

FIG. 6 is a longitudinal cross-sectional view of a main part in a state where a rudder blade and a forward / reverse injection mechanism are attached in another embodiment of the present invention.

[Explanation of symbols]

S Ship W Water 1 Propulsion device 2 Injection pipe 2a Injection passageway 3 Injection port 4 Outlet port 5 Air intake 6 Air passageway 6a Air supply pipe 7 Compressor 11 Injection nozzle 12 Water delivery passageway 13 Water delivery pipe 14 Coupling device 15 Pump 21 Forward / reverse Injection mechanism 21a Base 22 Operation rod 23 Forward / reverse water flow changing cylinder 23a Injection water inlet 24 Forward injection port 25 Reverse injection port 26 Matching port 31 Steering mechanism 32 Steering plate 33 Steering operation vertical rod 34 Spindle 35 Steering operation side rod

Claims (2)

[Claims] 1. An injection device for injecting water at a place where a ship is located, an injection pipe for injecting the injected water as a propulsive force in a predetermined direction, and an ejection force of water ejected by the force of compressed air. The injection device comprises a water delivery injector such as a pump, and an injection nozzle that is disposed in the injection pipe and injects the water delivered from the water delivery injector as a propulsion force. The propulsion force amplifying device is formed by an air compressor and a compressed air injection unit that injects compressed air from the air compressor in the direction of injecting water from around the injection nozzle. The ship propulsion device is characterized in that the inner diameter of the passage from the injection nozzle to the injection port where the tip of the injection pipe is narrowed is made larger than the inner diameter of the water delivery passage from the water delivery injector to the injection nozzle. . 2. A steering plate that guides the direction of the jet water flow to the left and right as needed, and a forward / reverse jet mechanism that converts the jet water flow into a forward flow and a reverse flow by operating the operating rod. The propulsion device for a ship according to claim 1, which is provided.