JPH09228851A - Sound insulating type generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently cool the inside of a sound insulating casing by forming a recessed part for mounting an operation panel over the upper part of the side panel of the sound casing faced to a fuel tank disposed in the inner upper area of the sound casing, and providing an intake and exhaust port for the ceiling surface of the aforesaid recessed part. SOLUTION: A cooling fan 4, an engine 2 and a generator 3 are disposed in the lower area of the inside of a sound insulating casing 10, and a fuel tank 5 and a muffler 6 are disposed in the upper area of the casing. A recessed part 13 caved inward within the sound insulating casing 2 is formed in the upper part of a side panel 12 faced to the tank 5 of the sound insulating casing 10, an operating panel is mounted to the recessed part 13, and concurrently an intake and exhaust port 13a communicating the inner and outer parts of the sound insulating casing 10 with each other, is formed in an upper plate 13A consisting of the ceiling surface of the recessed part 13. By this constitution, when the sound insulating type generator 1 is in operation, outside cold air is sucked in through the intake and exhaust port 13a by operating the cooling fan 4, and the upper area which will be turned out to be high in temperature, can be effectively cooled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof type generator having an engine, a generator, a cooling fan, a fuel tank and a muffler housed inside a soundproof casing, and more particularly to a cooling structure for the soundproof type generator. is there.

[0002]

2. Description of the Related Art This type of soundproof generator is intended to supply power outdoors, for example, and an engine and a generator are housed inside a soundproof casing in order to reduce operating noise. Further, in the conventional soundproof type generator, a cooling fan is used to introduce outside air into the air passage from the intake port of the soundproof casing, and the heat radiation from the engine and the generator is discharged to the outside from the exhaust port provided in the soundproof casing. There is.

[0003]

In the conventional soundproof type generator, however, the temperature inside the soundproof casing rises due to the heat radiated from the engine or the like that could not be exhausted and the hot air leaked from the air passage, causing the temperature inside the fuel tank to rise. The heating of the fuel often causes a decrease in output during continuous operation. Further, even when the soundproof type generator is restarted, the temperature inside the soundproof casing is increased as described above, which makes it difficult to restart the engine. In view of the above situation, it is an object of the present invention to provide a soundproof type generator capable of preventing a decrease in output due to a temperature rise in a soundproof casing as much as possible and eliminating difficulty in restarting. Is.

[0004]

In order to achieve the above object, in a soundproof type generator according to the present invention, a cooling fan, an engine and a generator are sequentially arranged in a lower region inside a soundproof casing, and an upper part inside the soundproof casing is arranged. A fuel tank and a muffler are sequentially arranged in the region, and at the upper part of the side panel of the soundproof casing facing the fuel tank, a recess for operation panel mounting is formed in a manner to be depressed inward of the soundproof casing,
An intake / exhaust port that communicates the inside and outside of the soundproof casing is provided on the ceiling surface of the recess.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment. As shown in FIGS. 1 to 3, the soundproof type generator 1 according to the present invention includes an engine 2,
A generator 3, a cooling fan 4, a fuel tank 5 and a muffler 6 are provided, and a soundproof casing 10 for accommodating the engine 2 and the like is provided.

The soundproof casing 10 has a substantially rectangular box shape, and has wheels R, R ...
On the other hand, intake ports 11a, 11a are formed below the side panel 11.

As shown in FIGS. 2 and 3, inside the soundproof casing 10, a cooling fan 4, an engine 2 and a generator 3 are installed in the lower region in order from the right side in the drawing.

Further, inside the soundproof casing 10,
In the upper region, a fuel tank 5 and a muffler 6 are installed in order from the right side in the figure, and the fuel tank 5 is located above the engine 2 and the cooling fan 4,
The muffler 6 is located above the generator 3.

In FIGS. 2 and 3, symbol A is an air duct, symbol B is an air cleaner, symbol C is a carburetor, symbol D is an exhaust pipe, symbol E is a ventilation cowl, symbol F is an exhaust pipe.
Is a muffler cover.

In the soundproof casing 10, a recess 13 is formed in an upper part of a side panel (front panel) 12 facing the fuel tank 5 so as to be recessed inward of the soundproof casing 2. As shown in FIG. 3, an operation panel 14 is attached which is equipped with various switches and the like.

Further, an intake / exhaust port 13a which communicates the inside and outside of the soundproof casing 10 is formed in the upper plate 13A which constitutes the ceiling surface of the recess 13, and the intake / exhaust port 1 is formed.
As shown in FIG. 4, 3a is composed of a long hole, and is formed over two places of the stepped upper plate 13A.

When the soundproof type generator 1 having the above-described structure is in operation, the inside of the soundproof casing 2 becomes negative pressure due to the operation of the cooling fan 4, so that as shown by an arrow I in FIG. The cold air of the intake and exhaust ports 13a, 13a
Flows into the soundproof casing 2.

Here, as described above, the upper plate 13 of the recess 13 is formed.
The intake / exhaust port 13a provided in A is located very above the soundproof casing 2 as is clear from the figure,
The upper region in the soundproof casing 2 which becomes hot due to heat radiation from the engine or the like is efficiently cooled by the cold air from the intake / exhaust port 13a.

Further, since the intake / exhaust port 13a is provided in the side panel 12 facing the fuel tank 5, the cool air from the intake / exhaust port 13a efficiently cools the fuel tank 5, and the inside of the fuel tank 5 is cooled. In this case, the temperature rise of the fuel is suppressed and the output reduction due to the temperature rise in the soundproof casing during operation is prevented as much as possible.

The outside air flowing into the soundproof casing 2 through the intake / exhaust ports 13a is sucked into the cooling fan 4 as indicated by arrows a to g in the figure, and then the engine 2 and the muffler 6 are cooled. The gas is discharged to the outside from an exhaust port 15a provided in the side panel (rear panel) 15.

On the other hand, when the soundproof type generator 1 is stopped after the operation, the cooling fan 4 is stopped.
The hot air emitted from the engine 2 or the like is indicated by an arrow h- in FIG.
As shown by j, the soundproof casing 2 rises above the inside.

Since the intake / exhaust port 13a is located extremely above the soundproof casing 2 as described above, the hot air rising above the inside of the soundproof casing 2 is sucked and exhausted as indicated by an arrow O. It will flow out of the soundproof casing 2 through the ports 13a, 13a, and thus the rise in the internal temperature of the soundproof casing 2 at the time of stop can be suppressed as much as possible, so that the soundproof generator 1 can be easily restarted. It becomes possible.

As described above, by forming the intake / exhaust port 13a for communicating the inside and outside of the soundproof casing 2 in the upper plate 13A of the recess 13 of the soundproof casing 2, the soundproof type generator 1 is operated during and after operation. It is possible to suppress the temperature rise in the soundproof casing at the time of stoppage, and thus possible to prevent the decrease in output during operation as much as possible, and it is possible to eliminate the difficulty of restarting.

Further, the intake / exhaust ports 13a, 13a provided on the upper plate 13A of the recess 13 may be inadvertently noticeable because they are shadows of the recess 13 when the soundproof generator 1 is installed on the ground. In addition, since the intake / exhaust ports 13a, 13a open downward to the upper plate 13A of the recess 13,
Intrusion of rainwater from above will be prevented as much as possible.

The soundproof type generator according to the present invention is, of course, a soundproof type generator for obtaining a general-purpose power source,
It goes without saying that the present invention can also be applied very effectively to a soundproof type generator as a working machine such as an engine arc welder (welding power source).

[0021]

As described above in detail, in the soundproof type generator according to the present invention, the cooling fan, the engine and the generator are sequentially arranged in the lower region inside the soundproof casing, and the fuel tank is arranged in the upper region inside the soundproof casing. A muffler is sequentially arranged, and a recess for mounting the operation panel is formed in the upper part of the side panel of the soundproof casing facing the fuel tank so as to be recessed inward of the soundproof casing. An intake / exhaust port that communicates the inside and outside is provided. According to the above configuration, by forming an intake / exhaust port on the ceiling surface of the recess, in other words, by providing an intake / exhaust port on the upper part of the soundproof casing, the soundproof casing of the soundproof type generator is in operation and when it is stopped. The inside will be cooled efficiently. Thus, in the soundproof type generator according to the present invention, it is possible to suppress the temperature rise in the soundproof casing as much as possible during operation and stop, and thus possible to prevent the output from decreasing during operation as much as possible. At the same time, the difficulty of restarting can be eliminated.

[Brief description of drawings]

1A and 1B are a front external view and a side external view showing a soundproof type generator according to the present invention.

FIG. 2 is a conceptual sectional side view showing a soundproof type generator according to the present invention.

FIG. 3 is a conceptual sectional side view showing a soundproof type generator according to the present invention.

FIG. 4 is a perspective view of a main part of the soundproof type generator according to the present invention.

[Explanation of symbols]

 1 ... Soundproof type generator, 2 ... Engine, 3 ... Generator, 4 ... Cooling fan, 5 ... Fuel tank, 6 ... Muffler, 10 ... Soundproof casing, 12 ... Side panel (front panel), 13 ... Recessed portion, 13A ... Top Plate (ceiling surface), 13a ... Intake and exhaust ports, 14 ... Operation panel.

Claims (1)

[Claims] 1. A cooling fan, an engine and a generator are sequentially arranged in an inner lower region of the soundproof casing, and a fuel tank and a muffler are sequentially arranged in an upper inner region of the soundproof casing, and a side of the soundproof casing facing the fuel tank. A recess for mounting the operation panel is formed in the upper part of the panel in a manner to be depressed inward of the soundproof casing, and an intake / exhaust port communicating the inside and outside of the soundproof casing is provided on the ceiling surface of the recess. Soundproof type generator.