JPH04330338A - Sound insulation type welder - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency of a reactor, to prevent lowering of the function of the whole of a device, and to increase durability. CONSTITUTION:An engine generator 20 to generate a power for a weld, a reactor 1 connected to the output end of the engine generator 20, and a cooling fan 3 to cool the generator 20 are contained in a box body 21 for sound insulation. In a sound insulation type welder 10 having a ventilation hole 9 which is formed in the vicinity of the cooling fan 3 of the box body 21 for sound insulation and through which the open air is sucked, the reactor 1 is installed in the vicinity of the cooling fan 3 in the box body 21 for sound insulation.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a soundproof welding machine,
In particular, the present invention relates to a soundproof welding machine equipped with a reactor near an engine generator.

0002

2. Description of the Related Art Reactors generally used in welding machines, generators, etc. generate heat as a result of high voltage output. On the other hand, recently, a soundproof welding machine in which the welding machine is surrounded by a soundproof box has been developed and put into practical use. When the above-mentioned reactor is built into this soundproof welding machine, it is necessary to actively cool the reactor, and a number of proposals have been made and researched in recent years. As an example, a proposal has been made to equip a soundproof welding machine with a cooling device dedicated to the reactor.

[0003] Also, as a cooling method for a reactor installed in a generator, etc., there is a method of cooling the reactor with the cooling air used for cooling the alternator, as described in [Utility Model Application Publication No. 61-136139]. There is.

0004

[Problem to be Solved by the Invention] However, in order to equip a soundproof welding machine with the above-described cooling device dedicated to the reactor, etc., the overall dimensions of the soundproof welding machine must be made relatively large due to space considerations. . Furthermore, material costs, labor costs, etc. increase accordingly, increasing the cost of the entire product. On the other hand, the invention/device described in Japanese Utility Model Application Publication No. 136139/1983 is relatively free from the above-mentioned space and cost problems when used in ordinary generators and welding machines (non-soundproof models). Although this has been improved, the cooling efficiency of the reactor is low because the cooling air that cools the alternator and becomes hot is further guided to the reactor to cool the reactor. In addition, if the invention and idea described in this Japanese Utility Model Publication No. 136139/1988 is used in a soundproof welding machine whose outer peripheral surface is covered, hot air will be trapped inside the soundproof welding machine, increasing the temperature inside the soundproof welding machine. let This will have an adverse effect on internal equipment.

[0005]

[Object] The purpose of the present invention is to provide a soundproof welding machine that improves the conventional inconveniences and, in particular, improves the cooling efficiency of the reactor, prevents functional deterioration of the entire device, and increases durability. That is its purpose.

[0006]

[Means for Solving the Problems] The present invention provides soundproofing for an engine generator that generates electric power for welding, a reactor connected to the output end of the engine generator, and a cooling fan that cools the engine generator. A soundproof welding machine is installed in a box for cooling, and has a ventilation hole for sucking outside air near the cooling fan in the soundproof box. It is installed near the fan. This is intended to achieve the objectives mentioned above.

[0007]

[Operation] First, the cooling fan rotates as the engine generator installed inside the soundproof box starts. Then, outside air is sucked in through the vent, this sucked outside air hits the reactor, and at the same time, the air around the reactor is sucked into the cooling fan. This effectively cools the reactor.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 shows a soundproof welding machine 1 in this embodiment.
0 is shown. In this FIG. 1, the reference numeral 20 is
An engine generator is shown, and numeral 3 is an engine generator 20.
A cooling fan is shown. Also, code 1 is
A reactor connected to the output end 20A of the engine generator 20 is shown. Here, the engine generator 20 is composed of an engine 2 and an alternator 12, and the cooling fan 3 is mainly used to cool the engine 2. And these engine generators 20,
The cooling fan 3 and the reactor 1 are installed in a soundproof box 2
Each is equipped within 1. Further, this soundproof box 21 is provided with a vent hole 9 near the cooling fan 3 for sucking in outside air. The reactor 1 described above is installed near the cooling fan 3 and the ventilation holes 9 inside the soundproof box 21. Further, the reference numeral 4 indicates a panel on which a welding current output terminal and the like are arranged, and the reference numeral 4 indicates an engine base that is the base of the engine generator 20 and the like.

Further, this will be explained in detail with reference to FIG. FIG. 2 is a partially omitted vertical sectional view of the left side surface (viewed in the direction of arrow A in FIG. 1) in FIG. 1 described above. In this FIG. 2, the reactor 1 is the engine generator 2
It is fixed to the engine base 6 at a position in front of the cooling fan 3 that cools the engine (on the right side in FIG. 2) and below the air cleaner 5 (on the bottom in FIG. 2). The fixing method is to use bolts and nuts as shown in the enlarged schematic cross-sectional view of FIG. 3 (viewed in the direction of arrow B in FIG. 1). In addition, the ventilation hole 9 is shown in the schematic cross-sectional view of FIG. 4 (FIG. 1).
As shown in the direction of arrow C in FIG. Here, the code 10 is
A tank is shown, and numeral 11 is a muffler. Further, reference numeral 13 indicates a muffler cover, and reference numeral 14 indicates a mount rubber. Further, reference numeral 15 indicates a wheel, reference numeral 16 indicates a battery, and reference numeral 17 indicates a cab.

As explained above, according to this embodiment,
Since the reactor 1 is arranged near the cooling fan 3 that cools the engine generator 20 and the vent 9 that takes in outside air, when the cooling fan 3 rotates with the start of the engine generator 20, the reactor 1 first The surrounding air is sucked in. Then, the internal pressure decreases and
5, the front of the soundproof generator 10 (see FIG.
Outside air 9A is taken in from the ventilation hole 9 on the right side of the screen. This drawn outside air 9A flows quickly and a part of it hits the reactor 1 and cools the reactor 1. and,
The outside air 9A that has cooled the reactor 1 is sucked into the cooling fan 3, passes through a predetermined path, and is discharged from the back side (left side in FIG. 4) of the soundproof generator 10 as exhaust air 9B. Therefore, hot air is not trapped inside the soundproof welding machine. Furthermore, the cooling efficiency is better than the conventional method described above in which the reactor is cooled by applying hot air, and the hot air has less influence on other parts. Therefore, it is possible to prevent functional deterioration and increase durability of the entire device. Furthermore, since the reactor 1 was installed in the dead space at the bottom of the panel 4,
The overall size of the soundproof welding machine 10 does not become large. In addition, the reactor is easy to install, and there is no need to equip a cooling device exclusively for the reactor, so the soundproof welding machine can be made relatively compact and inexpensive.

[0012] In the above-described embodiments, only one vent hole for sucking outside air is disclosed. However, in an actual product, a plurality of ventilation holes may be provided. Furthermore, the ventilation hole does not necessarily have to be installed near the cooling fan. Furthermore, the present invention is also effective for soundproof generators and the like.

[0013]

Effects of the Invention The present invention is configured and functions as described above.According to this, since the reactor is installed near the cooling fan that cools the engine generator and the vent hole that takes in outside air, the rotation of the cooling fan is reduced. The reactor is cooled by this. Therefore, it is possible to provide an unprecedented and excellent soundproof welding machine that can improve the cooling efficiency of the reactor, prevent functional deterioration of the entire device, and increase durability.

[Brief explanation of drawings]

FIG. 1 is a schematic external view of a soundproof welding machine in this embodiment.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is an enlarged view of FIG. 2;

FIGS. 4 and 5 are diagrams showing the flow of outside air.

[Explanation of symbols]

1 Reactor 3 Cooling fan 9 Ventilation hole 10 Soundproof welding machine 20 Engine generator 21 Soundproofing box

Claims (1)

[Claims] 1. An engine generator that generates electric power for welding, a reactor connected to the output end of the engine generator, and a cooling fan that cools the engine generator, housed in a soundproof box, This soundproof welding machine has a ventilation hole for sucking outside air near the cooling fan of the soundproof box, characterized in that the reactor is installed near the cooling fan in the soundproof box. Soundproof welding machine.