KR101492373B1 - Hovercraft - Google Patents

Abstract

The present invention relates to a hovercraft comprising: a propulsive air generating fan (20) installed to inhale air over a hull (10) and discharge the propulsive air toward a hull bottom (11) by having a rotary shaft (21) horizontally arranged to face the hull bottom (11); left and light propulsive air discharge ducts respectively extending in the lengthwise direction of the hull from the left and right sides of the hull (10); and a propulsive air distribution chamber (30) supplying the propulsive air discharged by the fan (20) to the inside space arranged on the lower side of the fan (20) and surrounded by sidewalls to distribute the propulsive air through outlets (33A, 33B) into left and right propulsive air discharge ducts (40A, 40B) while distributing the propulsive air through an exit (17) of the hull bottom (11) into a skirt-shaped floating body (16). Provided is the hovercraft capable of traveling and floating at the same time by effectively using air power discharged by one fan and efficiently using the propulsion of the fan by arranging the fan to face the surface of water from the bottom in order to prevent the fan from being resisted by air.

Description

{HOVERCRAFT}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air-bearing assembly, and more particularly, to an air-bearing assembly that travels by the force of propelling air generated in a fan installed in a hull,

The conventional air float is provided with a fan 4 protruding upward substantially from the rear of the hull 2 as disclosed in the patent document 1 below and the fan 4 is provided on the front side of the hull 2, The air is forcedly discharged to the rear and the water surface, and the hull 2 is caused to run by the force of the exhaust which is discharged to the rear while the hull 2 is floated on the water surface by the water side exhaust.

KR 10-2013-0065905 A However, the conventional air lifting tablet disclosed in Patent Document 1 has a structure in which the fan 4 protrudes upward from the deck of the hull 2, so that the outside air acts on the fan 4 in the direction opposite to the propelling direction There is a problem that sufficient propulsive force can not be obtained because the force of the air in the propelling direction discharged from the fan 4 is canceled. In addition, since the fan 4 is installed so as to protrude above the deck, the propulsion force of the fan 4 is reduced by causing a resistance when the hull is traveling. Therefore, a large capacity fan is used to overcome this, The capacity of the driving engine or the motor must be increased for use, and thus there has been a limit in reducing the size and weight of the floating pillow.

Accordingly, the present invention can effectively perform the running and floating by using the force of the air discharged from a single fan, and arranging the fan from the floor to the water surface so that the fan does not receive the resistance of the air, And an object of the present invention is to provide an air suspension which can be efficiently used.

According to an aspect of the present invention, there is provided an air conditioner comprising: a hull having a floor; a fan for generating a propelling air; a skirt-like body provided on a bottom surface of the hull and lifting the hull by the propelling air provided by the fan; And a steering mechanism for controlling the flow direction of the propulsion air generated in the hull,

The fan is horizontally disposed at the rear of the hull so that the rotary shaft is directed to the bottom of the hull so that the upper air of the hull is sucked and the propelling air is directed toward the bottom of the hull,

Left and right propulsion air exhaust ducts extending along the longitudinal direction of the hull at right and left sides of the hull,

The fan is disposed below the fan and the propelling air delivered from the fan flows into the inner space enclosed by the side wall and is distributed into the left and right propelling air discharge ducts through the outlet of the side wall and the skirt- And a propelling air distribution chamber for distributing the air into the inside of the casing.

According to the installation structure of the fan according to the present invention, since one fan is installed toward the bottom of the hull from the rear center of the hull, the resistance of the air is reduced at the time of traveling, so that a relatively large driving force can be obtained with a constant- And it is possible to realize light weight of the hull and simplification of the structure.

Another characteristic of the air lift according to the present invention is that the propulsion air distribution chamber has an inner space partitioned by a middle partition into a propelling air supply chamber and a floating air supply chamber. The space volume ratio of the propulsion air supply chamber to the floating air supply chamber is preferably in the range of 3: 1 to 4: 1.

As described above, according to the structure of the propulsion air distribution chamber according to the present invention, since the air delivered from the fan is introduced into the propulsion air distribution chamber and then distributed to the left and right propulsion air ducts through the side wall outlet, So that the efficiency of the fan driven by the same motor power can be increased.

According to another aspect of the present invention, a bypass air passage for bypassing external air impinging in a direction opposite to a traveling direction of a hull is parallel to the propulsion air discharge duct on the outer side of the propulsion air discharge duct . The cross-sectional area of the bypass air passage is preferably 1/5 to 1/10 of the cross-sectional area of the propelling air discharge duct. According to the structure of the bypass air passage, the air directed toward the hull toward the hull in the direction of travel of the hull passes through the direction opposite to the traveling direction of the hull, thereby canceling the resistance which hinders hull travel.

Wherein the steering mechanism is rotatably installed at a position where the discharge port of the propulsion air distribution chamber is formed in the propulsion air discharge duct so that the propulsion air supplied from the propulsion air supply chamber is directed forward A propelling air flow direction changing plate for turning backward, and an adjusting lever for rotating and redirecting the propelling air flow direction changing plate.

The propulsion air flow direction switching plate is located at the center of the entire longitudinal direction of the propulsion air discharge duct. The propulsion air flow direction switching plate divides the propulsion air discharge duct into a front duct portion and a rear duct portion and selectively connects the propulsion air supply chamber to the front duct portion or the rear duct portion as the control lever is operated. .

According to the above-described air-lifting device of the present invention, since one fan is installed toward the bottom of the hull from the rear center of the hull, the resistance of the air is reduced at the time of traveling, so that a relatively large driving force can be obtained as a constant- It is possible to realize a light weight of the hull and simplification of the structure.

The air delivered from the fan is introduced into the propulsion air distribution chamber and then distributed to the left and right propulsion air ducts through the side wall outlet so that the fan air can be used to propel the ship without loss, The efficiency of the driven fan can be relatively increased.

In addition, the resistance air acting in front of the traveling direction at the time of traveling can be passed through the resistance air passage in the rear direction in the traveling direction, thereby attenuating the resistance of air at the time of traveling, thereby enhancing the efficiency of the propelling air.

1 is a schematic perspective view of a part of an air flush according to the present invention.
2 is a plan view showing the arrangement structure of the fan in the present invention.
3 is a longitudinal sectional view showing a mutual coupling relationship between the fan and the propulsion air distribution chamber in the present invention.
Figure 4 is a longitudinal cross-sectional view showing the interlocking relationship of the fan and the propulsion air distribution chamber in the present invention.
5 is a perspective view showing the structure of the steering mechanism separately.
6 is a plan view showing the forward running operation state of the hull.
7 is a plan view showing the backward running operation state of the hull.
8 is a plan view showing a left-turn (counterclockwise turning) operation state of the ship.
Fig. 9 is a plan view showing the operating state of the ship at a priority (turning clockwise).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the air lifting according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a plan view showing an arrangement structure of the fan according to the present invention, and FIG. 3 is a plan view showing the arrangement of the fan and the propulsion air distribution chamber in the air lift chamber of the present invention, ≪ / RTI > shows a longitudinal directional coupling cross-section showing the relationship.

1 to 3, the air suspension of the present invention is rotated by a fan driving device 15 such as a hull 10 having a floor 11, a hydraulic or electric motor, etc. to generate propulsion air A fan 20 and a propelling air distribution chamber 30 for distributing the air sent out from the fan 20 to the hull propulsion direction and the hull lifting direction (inside the bottom of the hull skirt-shaped casing) A skirt-like body 16 for lifting the hull 10 from the water surface using the force of the air in the direction of the hull lifted out from the hull 10 and a hull 10 extending in the longitudinal direction of the hull 10, Left and right side propulsion air discharge ducts 40A and 40B for guiding the air distributed in the propulsion air distribution chamber 30 to be discharged to the front or rear of the hull 10, ) To the left and right propulsion air discharge ducts (40A, 40B) And a steering mechanism (50A, 50B) for controlling a driving or turning direction of the hull (10) by controlling the air flow direction.

The hull 10 is made of a plate made of an aluminum alloy material in consideration of light weight and corrosion resistance, and a plurality of frames arranged vertically and horizontally on the bottom of the hull bottom 11 are attached in a lattice form in order to increase the bending stiffness. It is also possible to insert a buoyancy material such as styrofoam between the frames attached to the hull bottom 11 in a lattice pattern in order to increase the buoyancy of the hull 10. According to this structure, buoyancy of the entire hull can be increased by offsetting the weight of the hull by utilizing the free space as the buoyant material installation space without increasing the hull size.

2, a driver's seat 12 is provided at the front half of the bottom 11 of the hull 10 and a propelling air distribution chamber 30 is provided at the rear half. A fan 20 is horizontally installed on the upper side wall 31a of the propulsion air distribution chamber 30 to forcibly blow air into the propulsion air distribution chamber 30 to provide propulsion air. Adjusting levers 52A and 52B are provided on the left and right sides of the driver's seat 12 for controlling the running direction or turning direction of the hull 10, respectively. Reference numeral 18 denotes a cover for covering the fan 20 and the fan driving device 15. [

The fan 20 is installed horizontally in the upper sidewall 31 of the propelling air distribution chamber 30, as shown in FIGS. That is, the rotary shaft 21 of the fan 20 is vertically arranged to face the inner hull bottom 11 of the propulsion air distribution chamber 30, and the fan blade 22 is fixed around the rotary shaft. Around the fan mounting hole of the upper sidewall 31 of the propulsion air distribution chamber 30 in which the fan 20 is installed is provided a fan for guiding the propulsion air by the fan 20 into the lower propulsion air distribution chamber 30, A shroud 23 is provided.

The fan 20 having such a structure is rotated by the fan driving device 15 to forcibly blow the upper external air of the propelling air distribution chamber 30 into the internal space S of the lower propelling air distribution chamber 30, And the generated propelling air is supplied to the inside of the propulsion air distribution chamber 30 through the exhaust ports 33A and 33B provided on the left and right side walls of the propulsion air discharge ducts 40A and 40B And the remainder is distributed into the inner space of the skirt-like body 16 through the outlet 17 formed at the rear of the hull bottom 11.

2, the propulsion air distribution chamber 30 includes a top wall 31a, a bottom wall 11 as a bottom wall, left and right walls 31b and 31c, and front and rear side walls 31d and 31e And the inner space S of the chamber 30 is divided by the intermediate partition wall 32 into the propulsion air supply chamber S1 and the floating air supply chamber S2.

The propelling air supply chamber S1 communicates with the inner space of the left and right propelling air discharge ducts 40A and 40B through the propelling air outlets 33A and 33A provided in the left and right side walls 31b and 31c, respectively. The floating air supply chamber S2 is communicated with the inner space of the skirt-like body 16 through the floating air outlet 17 formed in the rear hull bottom 11.

In the present invention, the space volume ratio of the propulsion air supply chamber (S1) and the floating air supply chamber (S2) is set to 3: 1 to 4 (4) so that the propulsive force for propelling the hull by the propelling air is relatively larger than the levitation force for floating the hull. : 1 < / RTI > However, the spatial volume ratio is not limited to the above-mentioned ratio, but can be adjusted in consideration of the distribution of the propulsive force and the levitation force.

Then, the discharge port (33A of the left / right driving air discharge ducts (40A, 40B) has a respective hull length of the propulsion air distribution chamber 30 provided with an air passage, and extending in a direction as shown in Figure 2, The propulsion air flow direction switching plates 51A and 51B of the steering mechanisms 50A and 50B are disposed at positions where the propulsion air flow direction switching plates 51A and 33B are formed. The left and right propulsion air discharge ducts 40A and 40B are provided with forward duct portions 40A1 and 40B1 extending in the fore direction by the propulsion air flow direction switching plates 51A and 51B, And sections 40A2 and 40B2.

As shown in FIG. 5, the steering mechanisms 50A and 50B include air flow direction switching plates 51A and 51B provided rotatably about support shafts 54A and 54B, 51A and 51B and operation bars 53A and 53B for transmitting the operation of the adjustment levers 52A and 52B to the air flow direction switching plates 51A and 51B . The ends of the operating bars 53A and 53B are connected to the brackets 57A and 57B attached to the inner surfaces of the air flow direction switching plates 51A and 51B.

When the driver of the driver's seat manipulates the control levers 52A and 52B, the actuating bars 53A and 53B move the air flow direction change plates 51A and 51B in the clockwise direction Or counterclockwise direction so that the propelling air supplied from the propelling air supply chamber S1 flows to the front duct portions 40A1 and 40B1 or the rear duct portions 40A2 and 40B2.

As shown in FIG. 2, bypass air passages 48A and 48B are provided outside the left and right propulsion air discharge ducts 40A and 40B. The bypass air passageways 45A and 45B pass air directed toward the ship 10 in a direction opposite to the travel direction of the ship 10 to cancel the resistance force that obstructs the ship running.

Hereinafter, the running and turning operations of the hull will be described.

A. Moving forward

Fig. 6 shows the forward running state of the hull and the arrangement of the steering mechanism in this state.

When the fan 20 is driven to rotate by the driving device, the fan 20 sucks air outside the hull and supplies the propulsion air into the lower propulsion air distribution chamber 30. [ This propelling air is distributed in the propulsion air distribution chamber 30 to the propulsion air supply chamber S1 and the floating air supply chamber S2. The left and right adjustment levers 52A and 52B are simultaneously pulled back so that the respective propelling air flow direction change plates 51A and 51B in the left and right propelling air vent ducts 40A and 40B The propulsion air supply chamber S1 is shut off from the front ducts 40A1 and 40B1 of the propulsion air discharge ducts 40A and 40B and the rear ducts 40A2 and 40B2 are blocked from the front ducts 40A1 and 40B1, The propulsion air in the propulsion air supply chamber S1 is discharged to the rear of the hull through the respective rear ducts 40A2 and 40B2 of the left and right propulsion air discharge ducts 50A and 50B, The hull 10 is caused to travel straight in the forward direction.

At the same time, the propulsion air in the floatation air supply chamber S2 is sent out into the skirt-shaped body 16 through the outlet 17 formed at the bottom of the floatation air supply chamber S2 to float the hull 10 from the water surface. Accordingly, the frictional resistance between the hull and the water surface is reduced, and the driving force of the hull by the above-mentioned propelling air can be improved.

B. Driving backward

Fig. 7 shows the arrangement of the steering mechanism in the backward running state and the backward running state of the hull.

Like the forward travel of the hull, the fan 20 is rotationally driven by a driving device to supply propellant air into the propellant air distribution chamber 30, which propels the propellant air in the propellant air distribution chamber 30 S1 and the floating air supply chamber S2.

In this state, as shown in Fig. 7, the left and right adjustment levers 52A and 52B are simultaneously pushed forward so that the respective propulsion air flow direction change plates 51A and 51B in the left and right propulsion air discharge ducts 40A and 40B The propulsion air supply chamber S1 is shut off from the rear ducts 40A2 and 40B2 of the propulsion air exhaust ducts 40A and 40B and is separated from the front ducts 40A1 and 40B1 while being blocked from the rear ducts 40A2 and 40B2. Respectively. Accordingly, the propulsion air in the propulsion air supply chamber S1 is discharged to the front of the hull through the front ducts 40A1 and 40B1 of the left and right propulsion air discharge ducts 50A and 50B, The hull 10 is caused to run straight in the backward direction.

C. Left

Fig. 8 shows the left-turn state of the hull and the arrangement of the steering mechanism in the left turn state.

Like the forward travel of the hull, the fan 20 is rotationally driven by a driving device to supply propellant air into the propellant air distribution chamber 30, which propels the propellant air in the propellant air distribution chamber 30 S1 and the floating air supply chamber S2.

In this state, as shown in Fig. 8, the left regulating lever 52A is pulled backward and at the same time the right regulating lever 52B is pushed forward to push each of the propelling airflows 40A, 40B in the left and right propelling air exhaust ducts 40A, When the direction changing plates 51A and 51B are respectively rotated to the positions as shown in Fig. 8, the propelling air supply chamber S1 is connected to the rear duct 40A2 of the left propelling air discharge duct 40A, And communicates with the front duct 40B1 of the second duct 40B. The propulsion air in the propulsion air supply chamber S1 is discharged to the rear of the hull through the rear duct 40A2 of the left propulsion air discharge duct 50A and at the same time the front duct of the right propulsion air discharge duct 50B 40B1 to turn the hull 10 leftward in the counterclockwise direction.

D. Priority

Fig. 9 shows the priority (turning clockwise) state of the hull and the arrangement of the steering mechanism in the priority state.

Like the forward travel of the hull, the fan 20 is rotationally driven by a driving device to supply propellant air into the propellant air distribution chamber 30, which propels the propellant air in the propellant air distribution chamber 30 S1 and the floating air supply chamber S2.

In this state, as shown in Fig. 9, the left regulating lever 52A is pushed forward, and at the same time, the right regulating lever 52B is pulled back so that each propelling air flow in the left and right propelling air exhaust ducts 40A and 40B When the direction changing plates 51A and 51B are respectively rotated to the positions as shown in Fig. 9, the propelling air supply chamber S1 is connected to the front duct 40A1 of the left propelling air discharge duct 40A and the right- And is communicated with the rear duct 40B2 of the air conditioner 40B. The propulsion air in the propulsion air supply chamber S1 is discharged to the front of the hull through the front duct 40A1 of the left propulsion air discharge duct 50A and at the same time the rear duct of the right propulsion air discharge duct 50B 40B1 to apply a moment in the clockwise direction to the hull 10 so that the hull 10 is rotated in the clockwise direction.

As described above, according to the present invention, the efficiency of the propelling air can be enhanced because the force of the propelling air acts on the hull without loss when the hull is moved back and forth and when the hull is turned. As the fan is placed horizontally on the hull, the influence of the wind is less when driving. Therefore, the force of the propelling air can be effectively used for the propulsion of the hull without loss.

Even when turning the hull, the force of the propelling air acts on the hull precisely without loss, so that the turning radius of the hull can be reduced and the hull can be turned accurately and quickly.

10: Hull 11: Hull bottom
12: driver's seat 15: fan drive device
16: skirt-type support 17: outlet
18: cover 20: fan
21: rotating shaft 22: fan blade
23: Fan shroud 30: Propelling air distribution chamber
31a: Upper side wall 31b of the dispensing chamber:
31c: right side wall 31d: front side wall
31e: rear side wall 32: intermediate partition
33A, 33B : propelling air outlet 40A, 40B: left / right propelling air outlet duct
40A1, 40B1: front duct portion 40A2, 40B2: rear duct portion
48: Bypass air passage
50A, 50B: steering mechanism 51: propelling air flow direction switching plate
52A, 52B: regulating lever 53: actuating bar
54: Support shaft 57: Bracket

Claims (8)

A hull 10 having a bottom 11 and a fan 20 for generating air for propulsion are provided on the bottom of the bottom 11 of the hull 10 and the hull is lifted by the propelling air provided by the fan 20, And a steering mechanism (50A, 50B) for controlling the direction of flow of the propulsion air generated in the fan (20) to advance or retract the hull (10)
The fan 20 is horizontally disposed at the rear of the hull so that the rotary shaft 21 faces the hull bottom 11 to suck the air above the hull 10 and send the propelling air toward the hull bottom 11,
Left and right propulsion air discharge ducts 40A and 40B extending along the longitudinal direction of the hull 10 at right and left sides of the hull 10,
The propulsion air flowing out from the fan 20 is introduced into the inner space surrounded by the side wall and disposed below the fan 20 so that the left and right propulsion air discharge ducts 40A 40B and the inside of the skirt-like body 16 through the outlet 17 of the hull bottom 11 so that the inner space is partitioned by the intermediate partition wall 32 into the propelling air supply chamber S1, Further comprising a propulsion air distribution chamber (30) partitioned by an air supply chamber (S2)
The steering mechanisms (50A, 50B)
Is rotatably installed at a position where the outlets (33A, 33B) of the propulsion air distribution chamber (30) are formed at the center in the entire longitudinal direction of the propulsion air discharge ducts (40A, 40B) 51A and 51B for diverting the propelling air supplied from the propelling air flow direction changing plates 51A and 51A toward the front or rear of the propelling air venting ducts 40A and 40B, (51A, 51B) to change the direction of rotation,
Bypass air ducts 48A and 48B for bypassing outside air that impinges in a reverse direction with respect to the running direction of the hull 10 are provided on the outer side of the propelling air discharge ducts 40A and 40B, 40A, 40B, respectively. delete The method according to claim 1 ,
Characterized in that the space volume ratio of the propulsion air supply chamber (S1) to the floating air supply chamber (S2) is in the range of 3: 1 to 4: 1. delete delete delete The method according to claim 1 ,
The propulsion air flow direction switching plates 51A and 51B divide the propulsion air discharge ducts 40A and 40B into the front duct portions 40A1 and 40B1 and the rear duct portions 40A2 and 40B2, , The propelling air supply chamber (S1) is switched to selectively communicate with the front duct portions (40A1, 40B1) or the rear duct portions (40A2, 40B2). The method according to claim 1 ,
Wherein the cross sectional area of the bypass air passage (48A, 48B) is 1/5 to 1/10 of the cross sectional area of the propelling air discharge duct (40A, 40B).

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