JP2893437B2 - Method and apparatus for assembling soundproof engine driven generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for assembling an engine driven generator used outdoors.
Particularly, as a cooling and noise countermeasure for the engine and the generator, a structure in which the engine and the generator are covered with an iron plate close to the engine, and a one-way cooling and a double structure are adopted.

[0002]

2. Description of the Related Art Conventionally, as an engine-driven generator of this type, for example, Japanese Unexamined Patent Publication No.
There is one disclosed in Japanese Patent No. 113642. That is, in this conventional engine-driven generator, the inside of the soundproof cover 1 is divided into the exhaust chamber 4, the engine room 5 and the generator room 6 by the soundproof walls 2 and 3. 7, an exhaust port is provided above the exhaust chamber 4, and a generator 8 is surrounded by a soundproof wall 9.

[0003] Cooling air enters the generator room 6 through the inlet 7, passes through the minimum opening 10 necessary for ventilation, enters the engine room 5, cools the engine 10a, and is then exhausted by the exhaust fan 10b. The air is discharged from the upper air outlet through the air chamber 4.

[0004]

However, in such a conventional engine-driven generator, the interior of the soundproof cover 1 is partitioned by the soundproof walls 2 and 3, and the periphery of the generator 8 is further protected by the soundproof wall 9. Because of the complicated structure, the assembly of the engine-driven generator is complicated, and the assembling work is not easy.

The engine room 5 passes through the opening 10 and
The cooling air that has flowed into the engine increases its speed near the opening 10 and contacts the engine surface to cool the engine surface well. However, on the engine surface far from the opening 10, the engine room 5 is wide, so that the opening 10 The passing cooling air is diffused, and most of the cooling air is separated from the engine surface, so that the engine cannot be cooled efficiently.
As a result, as a whole, the cooling effect of the engine cannot be significantly increased.

Further, noise generated from the engine is blocked only by the soundproof cover 1, and the generator 8 is partially exposed from the soundproof wall 9, so that the soundproofing effect cannot be remarkably enhanced.

The present invention has been made in view of such a conventional engine-driven generator, and has a simple structure.
It is an object of the present invention to provide a method of assembling an engine-driven generator that is easy to assemble, and to provide a soundproofing device for an engine-driven generator that can significantly enhance the engine cooling effect and also significantly enhance the soundproofing effect. Aim.

[0008]

To achieve the above object, a method for assembling a soundproof engine-driven generator according to the present invention comprises a box having a concave cross section with ducts formed at both ends.
Cooling air suction port drilled on the outer surface of the base box and this suction port
Cooling air sucked from the mouth is passed through the duct to the inside surface
So as to discharge from the open cooling air discharge port, mounting the engine which drives a generator and the generator on the upper surface of the base <br/> over scan box has an air exhaust port on the upper surface, the front-side surface soundproof wind exhaust duct box fitted with a radiator in the opening, with Keru Installing the upper rear surface of the base box, the front sound proof box provided with the operation panel on the outer surface, attached to the front upper surface of the base box, these Between the soundproof exhaust duct box and the front soundproof box
The soundproof exhaust duct is sandwiched by sandwiching an iron plate cover having a cross section with a lower side and a rear side open, and an opening behind the iron plate cover surrounds a radiator attached to an opening of the soundproof exhaust duct box. co to abut the iron <br/> plate covering the rear surface of the front soundproof box when it comes into contact with the front surface of the box, the iron plate cover
The so as to surround the whole of the engine and the generator attached to an upper surface of the base box, to face the outer surface of the left and right of the iron plate cover, between the soundproofing exhaust duct box and the front sound proof box by, Attach the soundproof door left and right was applied a sound-absorbing material on the inner surface openably Rutotomoni, so as to cover the upper surface side of the steel plate cover, between the soundproofing exhaust duct box and the front sound proof box, sound absorbing material on the inner surface Attach the canopy to which is attached, and assemble them one by one to
The generator and engine are to be surrounded by a steel plate
In addition, canopy, soundproof door, front soundproof box and soundproof exhaust duct box
The entire structure is surrounded by a double structure .

The soundproof engine-driven generator according to the present invention is further provided with a box having a concave cross section with ducts formed at both ends.
A cooling air intake port drilled on the outer surface of the base box made of body and cooling air sucked from this intake port is opened on the inner surface.
And a generator and an engine for driving the generator are connected to the upper surface of the base box.
Te arranged, the cooling air from the base box cooling air discharge port is discharged to the lower portion of the generator, so as to cool both sides of the generator and the engine while the way, the said generator the cross冂形shaped iron plate cover surrounding the engine
Arranged on the base box, a radiator in the opening of the front side surface
And arranged, soundproof wind exhaust duct box having the exhaust outlet on the top and outer
A front sound proof box provided with the operation panel on the side surface, the iron plate cover
The front and rear ends of the previous SL-based box top so as to sandwich from the front and rear of the
Arrangement, and the soundproof door left and right was applied a sound-absorbing material on the inner surface, said iron plates covering the left and right are arranged in the front and rear ends so as to cover the outer surface <br/> and the front soundproof box with the soundproof exhaust duct box Open and close in between
Placed standing, a canopy attached sound absorbing material on the inner surface, the disposed between the front soundproof box so as to cover the upper surface of the steel plate covering said soundproof exhaust duct box, and said generator and said engine
Is surrounded by the iron plate cover, and furthermore, the outside thereof is covered with a sound absorbing material on the inside.
With a sound-absorbing door with a sound-absorbing material attached to the inside
The noise generated from the generator and the engine by being surrounded is double-blocked by the iron plate cover and the left and right soundproof doors.

[0010]

In the method for assembling a soundproof engine-driven generator according to the present invention, in particular, the engine and the generator are surrounded by a steel plate,
The soundproof door has a double soundproof structure with soundproof doors on the left and right outer surfaces of the iron plate cover, so the soundproof door is lightweight and simple, and the soundproof door can be easily attached to the front soundproof box and the soundproof exhaust duct box. As a result, the work of assembling the engine-driven generator can be significantly improved.

Further, in the soundproof engine-driven generator according to the present invention, the cooling air flowing into the base box through the cooling air intake port passes through the cooling air discharge port to one portion of the generator. It flows in one direction toward the soundproof exhaust duct, and flows at a high speed through the narrow gap between the inner surface of the steel plate cover and the outer peripheral surface of the generator and the engine. The generator can be cooled effectively.

Further, in the soundproof type engine-driven generator according to the present invention, the noise generated from the engine and the generator is particularly reduced by the soundproof door having the iron plate cover and the sound absorbing material attached thereto.
In addition, since it is double-blocked by the iron plate cover and the canopy to which the sound absorbing material is adhered, noise generated from the engine and the generator can be significantly reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for assembling a soundproof engine-driven generator according to the present invention will be described below with reference to the drawings. FIG.
2 and 3 show an embodiment of an assembling method of the soundproof engine-driven generator according to the present invention, and FIG. 3 is an exploded perspective view of FIG. In FIG. 1 (a), a base box 12 of a soundproof engine-driven generator 11 is provided with a pair of ducts 1 extending in the front-rear direction on both side ends at a predetermined interval.
3 is formed, it forms a concave cross section which communicates at the bottom, this central
The concave portion forms the groove portion 14 . The front end of this groove 14 and
And the rear end is closed by the front side wall 15a and the rear side wall 15b.
ing.

Further, a pair of ducts 13 of the base box 12
Cooling air inlets 17 ,
And the left and right inner surfaces of the front ends of the pair of ducts 13 in the portion where the generator 21 is disposed , that is, the grooves
Cooling air discharge ports 18 are provided on the side surfaces of the portion 14, respectively.

First, a power generator 21 and an engine 22 for driving the power generator 21 behind the power generator 21 are mounted on a pair of ducts 13 at the center of the base box 12 via a vibration isolating rubber or the like.

Next, the radiator 20 is attached to the front opening 25a, and the soundproof exhaust duct box 25 having the exhaust port 27 on the upper surface is placed on the pair of ducts 13 so as to cover the rear part of the base box 12 ( FIG. 1 (b)).

A front soundproof box 28 having an operation panel 26 is placed on the pair of ducts 13 so as to cover the front part of the base box 12 together with the soundproof exhaust duct box 25 (FIG. 1).
(B)).

Next, an iron-plate cover (hereinafter simply referred to as “iron plate cover”) 24 whose lower and rear sides are opened is sandwiched between the soundproof exhaust duct box 25 and the front soundproof box 28, and the rear of the iron plate cover 24 is inserted. Is made to surround the opening 25a on the front surface of the soundproof exhaust duct box 25 so that the opening behind the iron plate cover 24 contacts the front surface of the soundproof exhaust duct box 25, and the iron plate cover 24 is attached to the engine 22. It is placed on a pair of ducts 13 so as to be close to each other and surround the engine 22 and the generator 21 (see FIG. 1C).

The iron plate cover 24 is formed in a cross-sectional shape.
The iron plate cover 24 is used for the entirety of the engine 22 and the generator 21.
The rear surface of the soundproof box 28 and the soundproof exhaust duct so as to cover
Abutting against the front of the box 25 and the front of the soundproof exhaust duct box 25
The radiator 20 that is open to the cover, these engines 22
And so on, so as to prevent internal noise from leaking.

Further, inspection openings (not shown) for maintenance and inspection of the generator 21 and the engine 22 may be formed on the left and right side surfaces of the iron plate cover 24.

Next, a soundproof door 29 made of an iron plate having a sound absorbing material 30 adhered to the inner surface thereof is connected to the soundproof exhaust duct box 25 and the front soundproof box 28 via hinges 29a so as to cover the left and right outer surfaces of the iron plate cover 24. (See FIG. 2A).

Next, the canopy 31 to which the sound absorbing material 32 is attached
Is attached to the front soundproof box 28 and the soundproof exhaust duct box 25 so as to cover the upper surface of the iron plate cover 24 and the upper surfaces of the left and right soundproof doors 29 between the front soundproof box 28 and the soundproof exhaust duct box 25 ( (See FIG. 2B).

Thus, the soundproof engine-driven generator 11 of this embodiment can be assembled.

In the method of assembling the soundproof engine-driven generator 11 according to the present embodiment, FIGS. 4A and 4B are used.
As shown in the figure, the engine 22 and the generator 21 are
4 and the soundproof structure is doubled by providing soundproof doors 29 on the left and right sides of the iron plate cover 24, so that the soundproof door 29 is lightweight and simple, and the soundproof door 29 is connected to the front soundproof box 28 and the soundproof exhaust box. It can be attached to the wind duct box 25 very easily, and the assembling work of the soundproof engine driven generator 11 can be remarkably improved.

Next, in the apparatus of the soundproof engine-driven generator 11 assembled as described above, as shown in FIGS. 4A and 4B, the engine 22 is started and the generator 21 is started. When the cooling fan 23 is driven to rotate, the cooling air flows into the duct 13 through the cooling air suction ports 17 provided on the outer surfaces of the pair of ducts 13, respectively. The coolant flows into the groove 14 of the generator 21 via the cooling air discharge ports 18 provided on the inner side surfaces. Further, the cooling air passes one way toward the soundproof exhaust duct box 25, and a narrow gap S between the inner surface of the iron plate cover 24 and the outer peripheral surfaces of the generator 21 and the engine 22.
Flows at a high speed with increasing speed, and is sucked by the cooling fan 23.

Further, the cooling air sucked by the cooling fan 23 cools the radiator 20 and the soundproof exhaust duct box 25
It flows through the inside and is discharged from the exhaust port 27 to the outside of the soundproof device of the engine-driven generator 11.

As described above, the cooling air flows through the narrow gap S between the inner surface of the iron plate cover 24 and the outer peripheral surfaces of the generator 21 and the engine 22.
When the cooling air flows through the generator 21 and the engine 22
Since the generated heat flows while being effectively carried away, the generator 21 and the engine 22 can be cooled well, and the cooling effect of the engine 22 can be significantly enhanced.

Further, in the apparatus of the soundproof type engine-driven generator 11 of this embodiment, noise generated from the inside of the apparatus is caused by the iron plate cover 24 and the front soundproof box 28 at the front, and by the soundproof exhaust duct at the rear. Each box is cut off by a box 25. In particular, the left and right directions are double cut off by a soundproof door 29 on which an iron plate cover 24 and a sound absorbing material 30 are adhered, and the upper side is double shielded by a canopy 31 on which an iron plate cover 24 and a sound absorbing material 32 are attached. Therefore, the soundproof type engine-driven generator 11 of the present embodiment
Can be significantly reduced.

The method of assembling the soundproof engine-driven generator 11 according to the present invention is not limited to the above-described method of assembling the embodiment, and the engine-driven generator 11 may be assembled as follows. it can.

That is, in the above-described assembling method of the present embodiment, first, the canopy 31 is attached to the front soundproof box 28 and the soundproof exhaust duct box 25 so as to cover the upper surface of the iron plate cover 24, and thereafter, the iron plate cover is provided. Left and right soundproof doors 29 may be attached to the front soundproof box 28 and the soundproof exhaust duct box 25 so as to cover the left and right outer surfaces of the 24.

In order to ventilate the inside of the front soundproof box 28, a cooling air suction port (not shown) is appropriately formed in the front, left, right or left side or upper surface of the front soundproof box 28, and the front soundproof box 28 is provided. A cooling air discharge port (not shown) communicating with the groove 14 of the base box 12 may be formed in the bottom surface of the base box 12.

[0032]

As described above, according to the method for assembling a soundproof engine-driven generator according to the present invention, the engine and the generator are surrounded by an iron plate cover, and the soundproof doors are provided on the left and right outer surfaces of the iron plate cover. The soundproof door is lightweight and simple because of the double soundproof structure provided with the soundproof door. The soundproof door can be easily attached to the front soundproof box and the soundproof exhaust duct box. Can be improved.

Further, according to the soundproof type engine-driven generator according to the present invention, when the cooling air flows through the narrow gap between the inner surface of the iron plate cover and the outer peripheral surfaces of the generator and the engine, the cooling air is generated by the generator and the engine. Since the generated heat flows efficiently while being carried away, the generator and the engine are well cooled, and the cooling effect of the engine can be significantly enhanced.

Further, in the soundproof type engine-driven generator according to the present invention, the noise generated from the engine and the generator is particularly reduced by the soundproof door to which the iron plate cover and the sound absorbing material are attached.
In addition, since the steel plate cover and the canopy to which the sound absorbing material is adhered are each double-blocked, noise generated from the engine and the generator can be significantly reduced, and the soundproofing effect of the engine-driven generator can be significantly improved.

[Brief description of the drawings]

1 (a) to 1 (c) are perspective views showing one embodiment of an assembling sequence of a soundproof type engine driven generator according to the present invention.

FIGS. 2 (a) and 2 (b) are perspective views showing an assembling sequence of a soundproof engine driven generator continued from FIG. 1 (c).

FIG. 3 is an exploded perspective view of FIG. 2 (b).

FIG. 4A is a sectional view taken along line BB of FIG. 2B;
FIG. 2B is a cross-sectional view taken along line CC of FIG.

FIG. 5 is a sectional view showing an example of a conventional engine-driven generator.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Soundproof type engine drive generator 12 Base box 13 Duct 14 Groove 15a Front wall 15b Rear wall 17 Cooling air inlet 18 Cooling air outlet 20 Radiator 21 Generator 22 Engine 23 Cooling fan 24 Iron plate cover 25 Soundproof exhaust duct box 25a Opening 26 Operation panel 27 Air outlet 28 Front soundproof box 29 Soundproof door 30, 32 Sound absorbing material 31 Canopy

Claims (2)

(57) [Claims] 1. A box body having a concave cross section with ducts formed at both ends.
Cooling air intake port drilled on the outside of the base box
Cooling air sucked from this inlet is passed through a duct
So that it can be discharged from the cooling air discharge port
And, mounting the engine which drives a generator and the generator on the upper surface of the base box, has air discharge port on the upper surface, the soundproof wind exhaust duct box fitted with a radiator in the opening of the front side surface, said base boxes with Keru of Installing the upper rear surface, the front sound proof box provided with the operation panel on the outer surface, attached to the front upper surface of the base box, between the these the soundproof exhaust duct box front sound proof box,
The soundproof exhaust duct box is sandwiched by sandwiching an iron plate cover having a cross-sectional shape open at the lower side and the rear side , and surrounding the radiator attached to the opening of the soundproof exhaust duct box with the rear opening of the iron plate cover. co When it comes into contact with the front surface is brought into contact with the iron plate cover on the rear surface of the front sound proof box, the iron plate cover
So as to surround the whole of the engine and the generator I attached to the upper surface of the base box, to face the outer surface of the left and right of the iron plate cover, between the soundproofing exhaust duct box and the front sound proof box , fitted with a soundproof door left and right was applied a sound-absorbing material on the inner surface openably Rutotomoni, so as to cover the upper surface side of the steel plate cover, between the soundproofing exhaust duct box and the front sound proof box, sound absorption on the inner surface Attach the canopy attached to wood, the generator of the central portion by assembling them in sequence
The engine and the engine
Cover, sound door, front soundproof box and soundproof exhaust duct box.
A method for assembling a soundproof engine-driven generator, characterized in that the entire structure is surrounded by a double structure . 2. A box having a concave section with ducts formed at both ends.
Cooling air intake port drilled on the outside of the base box
Cooling air sucked from this inlet is passed through a duct
So that it can be discharged from the cooling air discharge port
And, it arranged to be connected to an engine for driving the generator and the generator on the upper surface of the base box, cooling air from the cooling air discharge port of the base box is discharged in the lower part of the generator, the generator An iron plate cover having a cross section surrounding the generator and the engine is provided on the base so as to cool both sides of the machine and the engine in one way.
Placed on the box, the radiator is disposed in the opening of the front side surface, the exhaust outlet on the top surface
A soundproof exhaust duct box provided and a front soundproof box provided with an operation panel on the outer side are sandwiched from before and after the iron plate cover.
Disposed front and rear ends of the front SL base box top, the soundproof door left and right was applied a sound-absorbing material on the inner surface, said soundproofing exhaust and the front sound proof box disposed in the front and rear ends so as to cover the outer surface of the left and right of the iron plate cover Can be freely opened and closed between the wind duct box
And a canopy attached sound absorbing material on the inner surface, the said front soundproof box so as to cover the upper surface of the steel plate cover of said soundproof exhaust duct box
Placed between , surrounding the generator and the engine with the iron plate covering,
In addition, a canopy with a sound-absorbing material attached to the outside on the inside and the inside
The apparatus of these generators and soundproof type engine generator that noise generated from the engine, characterized in that blocked doubly by soundproof door of the left and right and the iron plate cover by enclosing soundproof door was attached a sound-absorbing material .