JPS5815223Y2 - Engine oil pan cooling system for soundproof engine working equipment - Google Patents

Description

[Detailed description of the invention] The present invention is a soundproof engine working machine (working machine means, for example, a generator, a compressor, a pump, etc.).
This invention relates to a device for cooling an oil pan of an engine in which a radiator, a suction type radiator fan, an engine, and a working machine are arranged in order from the front in a soundproof room inside a soundproof case.

The purpose of this is to sufficiently cool the oil in the oil pan.

In order to achieve this objective, the present invention increases the amount of air that cools the oil pan, as follows.

In other words, basically, an air guide path to the engine's oil pan is formed at the bottom of the second half of the soundproof case, and the suction force of the radiator fan allows outside air to pass through the air guide path, around the oil pan, and outside the radiator fan. to be discharged.

Further improvements were made to this by opening an air exhaust port on the front side of the oil pan in a soundproof room and allowing the cooling exhaust air discharged outside the radiator fan to pass through the outside of the air exhaust hole to cool the oil pan. A portion of the wind is sucked and discharged to the outside through the exhaust port.

Embodiments of the present invention will be described below with reference to the drawings.

The drawing shows a hand-held portable soundproof engine welding machine.

In the figure, numeral 1 is a radiator, 2 is a suction type radiator fan, 3 is a vertical overhead valve engine, 4 is an internal forced draft generator (a type of working machine), and 5 is a built-in fan.

These are arranged in series in order from the front, housed in a soundproof chamber 7 inside the soundproof case 6, and vibration-proofly supported on the bottom frame 18 of the soundproof case 6 with vibration-proof rubber 8.

In a space above the generator 4 in the soundproof room T, a fuel tank 9 and a control box 10 containing a welding transformer are arranged side by side.

Inside the soundproof case 6, on the soundproof room T, there are an exhaust passage 11 and an intake passage 1.
2 are arranged side by side.

Outside air intake ports 13 are opened toward the atmosphere on both left and right sides of the front and back of the air intake passage 12, and a ventilation port 14 at the rear of the soundproof room 7 is opened on the lower surface thereof.

There is a ventilation outlet chamber 1 at the front of the soundproof room 7 on the front lower surface of the exhaust passage 11.
A communication port 15 communicating with the air conditioner 9 is provided, and an exhaust port 16 is opened toward the atmosphere at the rear upper surface thereof.

A muffler 17 is arranged at the end of the exhaust passage 11.

As a result, the flow of ventilation cooling air in the soundproof room only makes one rotation clockwise from the top inside the soundproof case 6.

That is, outside air enters the rear part of the soundproof room 7 from the outside air intake 13, passes through the air suction path 12 and the ventilation port 14, blows through the inside of the soundproof room 7 to the front, and flows into the soundproof room 7, the inside of the control box 10, and the fuel. After ventilating and cooling the tank 9, engine 3, and radiator 1, it passes through the ventilation outlet chamber 19, communication port 15, and exhaust passage 11, cools the muffler 18, and is discharged into the atmosphere from the exhaust port 16. .

The generator 4 has an air intake port 20 for forced ventilation inside the generator 4 on its back surface, and an air exhaust port 21 on its lower front surface.

A partition plate 22 is installed directly below the generator 4, and this partition plate 22
An air guide path 24 to the oil pan 23 of the engine 3 is formed below.

A reinforcing horizontal frame 25 made of a channel of the bottom frame 18 runs transversely in the upper half of the front side of the oil pan air guide path 24, and the inside thereof is used as an air exhaust path 26 for the generator 4.

An inlet 27 opens at the upper surface of the central portion of the air exhaust passage 26, and outlets 28 open toward the outside at both left and right end surfaces thereof.

The population 27 is connected to the exhaust port 21 of the generator 4.

The outside air intake 2 is located along the entire width of the rear lower corner edge of the soundproof case 6.
9 is opened diagonally backward and downward.

This outside air intake port 29 serves both as an outside air intake port for the oil pan air guide path 24 and an outside air intake port for the generator 4.

A dustproof screen 30 is attached to the outside air intake port 29 diagonally backward and downward.

As a result, outside air is drawn into the outside air intake port 29 and is divided into two parts.

One of them cools the generator 4 by ventilation, and is discharged to the outside from the generator exhaust passage 26.

The other one cools the oil pan 23 through the oil pan air guide path 24, and then ascends inside the soundproof room 7.
It joins the ventilation cooling air inside.

In the soundproof room I, there is an exhaust port 3 on the lower wall in front of the oil pan 23.
1 is opened.

It extends to the right from the lower part of the ventilation outlet chamber 19 to cover the lower surface of the auxiliary ventilation exhaust channel 32 or the soundproof room 7, and covers the outside of the lower surface of the exhaust outlet 31 in the middle of its extension, and the rear end of the extension. Exit ports 33 open toward the atmosphere on both the left and right sides.

A ventilation suction plate 34 is fixed within the auxiliary ventilation exhaust path 32 so as to cover the outer surface of the exhaust port 31.

As a result, a part of the cooling exhaust air discharged from the soundproof room 7 to the ventilation outlet chamber 19 by the radiator fan 2 passes through the auxiliary ventilation exhaust passage 32 and is discharged to the outside from the outlet 33 thereof.

At this time, a suction pressure is generated at the right end opening of the ventilation suction plate 34, so that a part of the wind that has cooled the oil pan 23 is forcibly drawn out from the ventilation opening 31 to the auxiliary ventilation and exhaust passage 32.

Therefore, the amount of cooling air in the oil pan 23 is a large amount, which is the amount sucked into the radiator fan 2 plus the amount forcibly sucked into the auxiliary air exhaust passage 32 from the exhaust port 31. The oil is sufficiently cooled.

Since the present invention is constructed and operates as described above, it has the following effects.

That is, the cold air outside the soundproof case is blown directly onto the oil pan from the oil pan air guide path.

Moreover, the amount of cooling air for the oil pan is a large amount, which is the amount that is sucked into the radiator fan 2 plus the amount that is forcibly sucked outside from the oil pan cooling air outlet.

Therefore, since the cooling air for the oil pan is cold and plentiful, the oil in the oil pan can be continuously cooled to a sufficiently low temperature via the oil pan.

Furthermore, the oil pan cooling exhaust air is sucked and discharged from the oil pan cooling exhaust port using the flow of ventilation exhaust air discharged from the radiator fan, so the suction means attached to the exhaust port is A fixed type such as an iron plate is sufficient, and a moving type such as a fan is not required, so the manufacturing and operating costs can be reduced, and there is no failure or wear, and the device is excellent in durability.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical side view, FIG. 2 is a cross-sectional plan view, FIG. 3 is a vertical front view, FIG. 4 is a vertical rear view, and FIG. 5 is a cross-sectional bottom view. be. 1...Radiator, 2...Suction type radiator fan, 3...Engine, 4...
...Work equipment, 6...Soundproof case, 7...
・Soundproof room, 14...Ventilation entrance, 19...
・Ventilation outlet, 23...Oil pan, 24...
...Oil pan air guide path, 29...Outside air intake, 31...Exhaust port, 32...Ventilation air exhaust path, 34...Suction means.

Claims (1)

[Scope of utility model registration request] A radiator fan 2, an engine 3, and a working machine 4 are arranged in order from the front in a soundproof room 7 inside a soundproof case 6, and the ventilation port 14 is opened at the rear of the soundproof room T, and the ventilation port 14 is opened at the rear of the soundproof room T. The ventilation outlet 19 is opened, and the oil pan 2 of the engine 3 is installed in the lower half of the soundproof case 6.
The oil pan air guide path 24 to the oil pan air guide path 24 is divided into sections with an open front end, and an outside air intake port 29 is opened at the rear of the oil pan air guide path 24.
An air exhaust port 31 is opened in the front side of the oil pan 23 in the soundproof room 7, and an auxiliary ventilation passage 32 is extended from the bottom of the ventilation outlet 19 toward the rear so as to cover the lower surface of the soundproof room 7. The passage 32 is communicated with the outside of the soundproof case, and the auxiliary ventilation passage 3
By fixing the ventilation suction plate 34 inside the auxiliary ventilation passage 32 so as to cover the outer surface of the exhaust opening 31, the area of the auxiliary ventilation passage 32 near the exhaust opening 31 is formed into a narrow passage. The air in the space near the pan 23 is removed from the exhaust port 3.
1. An oil pan cooling device for an engine of a soundproof engine working machine, characterized in that the oil pan is configured to be sucked out from 1 to an auxiliary ventilation passage 32.