JPS62225496A - Small jet propelled boat - Google Patents

Abstract

PURPOSE:To reliably prevent inundation into an engine room by releasing the water flooded over a deck to side sections through an opened groove and shielding the water having entered an air tank through an air intake port with a partition plate in a small surface boat. CONSTITUTION:When water is flooded over an upper deck 21, it enters a groove 5 and is discharged from both side sections. In this case, if much water enters, drainage cannot overtake inundation, and water enters an air tank 3 through an air intake port 40, but the water having entered is shielded by a partition plate and does not reach the upper opening section of a pipe 6, and it is discharged outside the hull through a drain pipe 8 connected to the lowest section of the air tank 3. Accordingly, inundation into an engine room 29 can be reliably prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement of a small jet propulsion boat that is mainly operated by one person and sails at high speed in the ebb and flow, and particularly relates to an improvement of its air intake mechanism.

(Prior art) Recently, the small jet 1 "reverse layer" has been widely used as a small boat with an engine that glides on the water surface. Operation (movement) of scales such as turning or 11η backwards
1. Therefore, the hull will be constantly exposed to severe conditions, and a large amount of water will be launched onto the hull. 1. This will cause water to enter the engine room through the air intake. was often the case.

(Purpose of the Invention) This invention was made to solve such conventional problems, and even when a large amount of water is launched onto the deck of a small boat, water does not flood into the engine room. To provide a small jet propulsion watercraft having an air intake mechanism that can reliably prevent corrosion.

(Structure of the Invention) The present invention is a small water vehicle for one person, in which a substantially sealed engine room is formed in a portion surrounded by a hull upper deck and a bottom plate, and the front upper part of the engine room is provided with a substantially sealed engine room. An air tank is formed, and this air tank communicates with the engine room through a communication port, and the rear wall of the air tank is connected to the earthen deck 1. An air intake into the air tank is formed at the top of the rising wall, and an air intake and the communication port are formed in the air tank. A partition plate is installed so that a gap is formed between its lower end and the bottom of the air tank, and a drain pipe that opens outside the hull is connected to the bottom of the air tank. be.

” - In the construction tank, water launched onto the deck first escapes to the side through a hole that opens on the deck, and water that enters the air tank from the air intake is blocked by a partition plate. Water is drained out of the boat from the drain pipe without reaching the communication port with the engine room, preventing water from entering the engine room (Example) In FIGS.
The part surrounded by the upper deck 21 formed forward of the center of the hull and the deck member behind it is IJI.
A first engine room 29 is formed in a portion surrounded by the bottom plate 20 and the upper deck 21, which is configured to have a water volume and is sealed at the time of purchase. Further, a seat 50 is formed protruding from the center part of the hull to the intermediate fire part in the transverse direction, and a foot deck that opens to the stern end is formed between this seat 50 and the gunwales on both sides (not shown). . The foot deck and the lower side of the seat 50 are also configured to have a drainage volume.

The engine 14 and the fuel tank 15 are arranged in the engine room 29, and a hatch cover 28 is placed above the engine room 29.
is attached to substantially seal the engine room 29.

The 1yif5 portion of the hatch cover 28 is connected to the upper deck 21 by a hinge (not shown), and the hatch cover 28 is configured to rotate around this hinge and be separated. A suitable locking shell is attached to the end of the hatch cover 28 to maintain the closed state.

An air tank 3 is formed at the front upper part of the engine room 29. A communication pipe 6 is provided in the air tank 3, and the communication pipe 6 connects the air tank 3 to the engine room 29.
A communication port is formed to allow communication between the two. The rear wall (rising wall) 4 of the air tank 3 and the front wall 2 of the hatch cover 28
8a are substantially parallel to each other, and the lower end of the rear wall 4 is bent rearward to form a hatch coaming.
is formed.

An air intake port 40 into the air tank 3 is formed at the upper part of the rear ri 4, and a partition plate is provided in the air tank 3 between the air intake port 40 and the upper end opening (1 port) of the vibro. 7 is attached, and a gap is formed between the lower end of the partition plate 7 and the bottom 3o of the air tank. Furthermore, drain pipes 8 are connected to the lowest part of the air tank 3, respectively, outside the side plates 23 of the hull 100.

As shown in FIG. 3, a storage compartment 88 with an open top and a groove 84 are formed on the lower side of the seat 5o, and the upper part of the storage compartment 88 and t#'+84 are attached to the lower surface of the seat 50. It is covered with a lid 8o. This full 84
An exhaust pipe 81 whose lower end opens into the engine room 29 is attached to the exhaust pipe 81, and the groove 84 is connected to the opening 82 on the upper side and the opening 8 between the seat support base 90 and the lower end of the seat side.
3, and a drain passage 9 is formed at the lower end of the groove 84.

In the above configuration, while the boat is running, air is supplied from the iM 5 into the air tank 3 through the air intake port 40, and into the engine room 29 through the vibro. The air in the engine room 29 is then exhausted from the exhaust pipe 81 through the openings 82, 83, thereby ventilating the engine room 29. Further, when water is launched onto the upper deck 21, the water enters the deck and is discharged from both sides thereof. If there is a lot of suspended water, the water cannot be discharged from both sides of the iR5 in time, and the water will also enter the air tank 3 through the air intake port 40. It is discharged to the outside of the boat through a drain pipe 8 connected to the lower part. Note that water that has entered the air tank 3 is removed by the partition plate 7.
It will not reach the upper opening of the vibro because it is obstructed by the
Therefore, even if many meters of water are launched onto the upper deck 21, it is reliably prevented from entering the engine room 29. At this time, only air is supplied from the vibro to the engine room 29 through the gap below the partition plate 7.

Also, in the air exhaust section, the upper part of the exhaust pipe 81 is
0 and through the opening 83 and the opening 82 the groove 8
Even if water enters into the engine room 29, the water is first drained out through the drain @9 and is prevented from entering the engine room 29. Furthermore, since the air in the engine compartment 29 is discharged below the seat 50, if an abnormality occurs in the engine compartment 29, the person on the seat 50 will be immediately alerted by the smell of the ventilation. There is also the advantage of

(Effects of the Invention) As explained above, in the configuration of the present invention, water launched onto the deck is first released to the side through the groove opened on the deck, and then enters the air tank through the air intake port. The water is blocked by the partition plate and flows out of the hull from the drain pipe without reaching the communication port with the engine room.
This can reliably prevent water from entering the engine room.

[Brief explanation of drawings]

FIG. 1 is a central vertical cross-sectional view of the vicinity of the center of a boat body showing an embodiment of the present invention, FIG. 2 is a ll-1[i1 cross-sectional view thereof, and FIG. 3...Air tank, 4...Rising wall, 5...Groove,
6... Pipe for air intake, 7... Partition plate, 8...
...Drain pipe, 14...Engine, 28...Hatch cover, 29...Engine room, 40...Air intake, 100...Hull.

Claims (1)

[Claims] 1. It is a small water vehicle for one person, and a substantially sealed engine room is formed in the area surrounded by the upper deck of the hull and the bottom plate, and an air tank is formed in the upper front side of this engine room, This air tank and the engine room communicate with each other through a communication port, and the rear wall of the air tank constitutes a rising wall of a groove that opens above the upper deck and on both sides in the width direction of the ship. An air intake port is formed in the air tank, and a partition plate is installed in the air tank between the air intake port and the communication port so that a gap is formed between the bottom end of the partition plate and the bottom of the air tank. A small jet propulsion boat characterized by having a drain pipe connected to the bottom of the air tank that opens outside the hull.