JPS6224748Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a soundproof engine working machine, and in particular is designed to cool a fuel tank disposed within a soundproof case.

Generally, in soundproof engine work equipment, the soundproof case is formed in a sealed manner to prevent the operating noise of the engine from escaping outside the case, and the engine, work equipment such as a generator, fuel tank, etc. are housed within the soundproof case. ing. In this case, the fuel tank is fixed to the ceiling plate of the soundproof case for convenience of storage space and refueling work. However, the inside of the soundproof case becomes hot due to the hot air from the engine, etc., and in the summer, the soundproof case itself is heated by sunlight, which heats up the fuel tank located at the top of the soundproof case, causing the temperature of the fuel to rise as well. Therefore, there is a problem in that vapor is generated in the fuel supply path to the engine, which tends to cause malfunction.

The present invention was proposed in view of the above points, and the inside of the soundproof case is divided into an upper ventilation cooling air intake chamber inside the soundproof case and a lower equipment storage chamber using a partition plate, and the fuel tank is separated by a partition plate. At the same time, the oil filler port of the fuel tank is placed beyond the partition plate and extends into the ventilation chamber, and the air is sucked in through the ventilation port opened in the front part of the partition plate than the fuel tank. By connecting the chamber and the equipment housing chamber, the fuel tank is protected from the sun's irradiation heat by a ceiling plate, an air intake chamber, and a partition plate, and the fuel tank is surrounded by a flow of cooling air. shall be.

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

Figure 1 is a perspective view of a soundproof engine generator, Figure 2
The figure shows a longitudinal front view of the soundproof engine generator E.
The inside of the soundproof case 1 is divided into upper and lower parts by partition plates 2, and the lower space is used as an equipment storage chamber 3, and the upper space is further divided by a partition wall 4, and the front part is used to exhaust ventilation and cooling air inside the case. The rear part of the chamber 5 is formed into a suction chamber 6 for ventilation and cooling air inside the case.

In the equipment storage room 3, a radiator 7, a radiator fan 8, a forced water-cooled vertical diesel engine 9, and a rotating field type three-phase alternating current generator 10 are arranged in order from the front, and a fuel tank 11 is placed above the generator 10. is arranged. This fuel tank 11 is located in the equipment storage chamber 3.
An overflow fuel receiver 14 is formed on the upper surface of the partition plate 2 to surround the oil filler port 12, and the overflow fuel receiver 14 receives the overflow fuel. As shown in FIG.
It is designed to flow down to 6.

In addition, a muffler 17 of the engine 9 is provided in the exhaust chamber 5.
is arranged, and an electric control device 1 is installed in the air suction chamber 6.
8 are arranged.

There is a communication port 19 between the ventilation chamber 6 and the rear of the equipment storage chamber 3.
and communicated through a ventilation port 20 on the front side of the location where the fuel tank 11 is installed.
The front part of the equipment storage chamber 3 and the ventilation chamber 5 are connected to the radiator 7
They are communicated with each other through a communication path 21 formed vertically on the front side.

The radiator fan 8 causes outside air to flow from the upper intake port 22 through the suction chamber 6 into the equipment housing chamber 3, and while passing through the equipment housing chamber 3 from the rear to the front, the inside of the equipment housing chamber 3 is ventilated and cooled. After that, the radiator 7 is cooled, and the air is passed through the exhaust chamber 5 to the discharge ports 23, 2.
It is discharged to the outside from 4. The electric control device 18 is installed in the intake chamber 6, and the muffler 17 is installed in the exhaust chamber 5.
Cool each.

On the other hand, by the fan 25 built into the generator 10, outside air is also taken into the equipment housing chamber 3 from the lower intake port 26, and a part of the air enters the generator 10 from the air intake port 27 opened at the rear of the generator 10. After cooling the generator 10 from inside, it is discharged to the outside from the exhaust passage 28 provided at the bottom of the soundproof case.

FIG. 4 shows a modification of the present invention, in which a lid 29 that seals the oil filler port 12 of the fuel tank 11 is integrated with a lid plate 32 that closes the fuel filler port 31 opened in the upper wall 30 of the soundproof case 1. Formed in the fuel supply port 3
The oil filler port 12 can be opened and closed at the same time by the opening and closing operations of the oil filler port 12.

As described above, the present invention forms a cooling air intake chamber above the partition plate disposed inside the soundproof case.
Since the main body of the fuel tank is located in the equipment housing chamber below the partition plate, the irradiated heat from the sun is transferred to the ceiling plate,
Since the air intake chamber on the upper side of the partition plate and the partition plate can block the air, it is possible to prevent the fuel tank from being heated by the sun's irradiation heat. Since the air suction chamber and the equipment storage chamber are communicated with each other, a flow of cooling air that cools the upper part of the fuel tank is generated in the air suction chamber, and the cooling air that flows in the air suction chamber around the fuel tank and the equipment It can be cooled by cooling air flowing through the containment chamber.

Therefore, it is possible to reduce the rise in fuel temperature within the fuel tank, and it is possible to prevent engine malfunctions due to the rise in fuel temperature.

Moreover, since the oil filler port of the fuel tank is surrounded by an overflow fuel receiver, the fuel overflowing from the filler port is stored in the overflow fuel receiver and is prevented from flowing into the equipment housing chamber. Moreover, since the overflow fuel tray also serves as a heat shield, it is possible to prevent the oil filler port from being heated by irradiated heat from the sun.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a longitudinal sectional front view, and FIG. 3 is a view of FIG.
A line sectional view, and FIG. 4 is a sectional view of a main part of a modification. 1... Soundproof case, 2... Partition plate, 3... Equipment storage room, 5... Ventilation chamber, 6... Air suction chamber, 11...
Fuel tank, 12... 11 oil filler port, 14... Overflow fuel receiver, 19... Communication port, 20... Ventilation port,
21...Communication path.

Claims (1)

[Scope of utility model registration request] A partition plate 2 arranged inside the soundproof case 1 divides the inside of the soundproof case 1 into upper and lower parts, and an equipment storage chamber 3 is provided in the lower space.
At the same time, an exhaust chamber 5 and an air suction chamber 6 for ventilation and cooling air inside the case are formed in the upper space, and are located front and back, and a communication port is formed between the rear of the air suction chamber 6 and the rear of the equipment storage chamber 3. 19 and communicates with equipment storage room 3.
The front part of the fuel tank 1 is connected to the exhaust chamber 5 through a communication passage 21, and the fuel tank 1 is connected to the upstream side of the cooling air at the lower part of the partition plate 2.
1 is arranged, and the oil filler port 12 of this fuel tank 11 is pushed beyond the partition plate 2 into the suction chamber 6, and at the same time, an overflow fuel receiving tray 14 is placed in the suction chamber 6 in a state surrounding the oil filler port 12. Provided with a partition plate 2 and a fuel tank 11
This soundproof engine working machine is characterized in that a ventilation port 20 is provided in a more forward portion of the engine, and a ventilation chamber 6 and an equipment storage chamber 3 are communicated through the ventilation port 20.