JPH07243333A - Sound insulation type engine operation machine - Google Patents

Abstract

PURPOSE:To effectively suppress rising of inside temperature of an engine operation machine even after the operation stop of the engine operation machine. CONSTITUTION:In a sound insulation type engine operation machine having a control panel 11 installed in the central part at one edge, an outside air intake port 13 installed in part of a floor 12, and an air exhaust port 14 installed in a specified portion on the upper side surface, and in which an engine 2 and a generator 3 are housed, an air vent 20 connecting to the control panel 11 is formed on the upper side of control panel 11, a sliding panel cover 21 is arranged in the air vent 20, and the engine 2 and the generator 3 are set in a starting mode by energizing the closing operation of the sliding panel cover 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof engine working machine, and more particularly to a soundproof engine working machine having an outside air inlet on a part of the floor.

[0002]

2. Description of the Related Art Conventionally, engine working machines such as engine generators, which are frequently used in construction sites, have a structure that does not cause noise pollution, that is, a soundproof structure. On the other hand, an engine working machine provided with this soundproof structure is equipped with a fan separately inside the engine and the generator, for example, in order to prevent overheating of the internal engine and the generator, etc. Various cold air ventilation structures have been incorporated in the past, such as introducing from the intake port and then sending it out from the exhaust port provided at the top.

[0003]

In the above-mentioned conventional example, the fans in the engine and the generator stop when the engine of the engine working machine stops. Therefore, when the work is stopped, the cold air ventilation structure does not exert its original function, and the internal temperature of the engine working machine, especially the engine, rises sharply. When such a situation occurs, in particular, various control system electronic components mounted inside are deteriorated due to high temperature, and the surroundings of the fuel tank mounted inside are exposed to high temperature.

[0004]

An object of the present invention is to improve the disadvantages of the conventional example, and in particular, to perform a soundproof engine work capable of effectively suppressing an increase in the internal temperature of the engine work machine even after the operation of the engine work machine is stopped. The purpose is to provide a machine.

[0005]

According to the present invention, there is provided a main body case in which an engine and a generator connected to the engine are housed. This main body case has a control panel at the center of one end face, an outside air intake port at a part of the floor surface, and an exhaust port at a predetermined position on the upper side surface. A vent is provided on the upper side of the control panel connected to the control panel, and an opening / closing door is installed in the vent. The engine and the generator are set to the start mode by urging the closing operation of the open / close door. This aims to achieve the above-mentioned object.

[0006]

[Operation] When it is necessary to stop the work of the soundproof engine generator in operation, immediately slide panel cover 21
Lower the air vent 2 above the control panel 11
Set 0 to the fully open state. When the ventilation port 20 is set to the fully open state, the sliding panel cover 21 as the opening / closing door is urged to set the engine switch 22 to the off state (stop mode), and the operation of the apparatus is stopped. in this case,
In the conventional example, when the device is stopped, the operations of the generator ventilation fan 15 and the engine cooling fan 16 are also stopped at the same time, so that the temperature in the main body case 1 is rapidly increased by the heat of the engine 2 and the generator 3. In such a case, however, in this embodiment, the superheated air in the main body case 1 is immediately discharged to the outside due to the action of the vent 20.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIGS. 1 to 5, reference numeral 1 indicates a body case having a soundproof structure. The main body case 1 houses an engine 2 and a generator 3 connected to the engine 2 inside.

The body case 1 has one end surface (the left end surface in FIG. 1).
A control panel 11 is provided at the center of the.
The floor surface 12 of the main body case 1 is provided with a bulging portion 12A having an inverted U-shaped cross section that extends to the left and right in FIG. A plurality of outside air suction ports 13 are provided on the rising surface of the bulging portion 12A. The engine 2 and the generator 3 are provided with cushioned leg fixing members 2a and 3a for fixing the engine 2 and the generator 3 on the left and right sides of the bulging portion 12A in FIG. , 3a, the engine 2 and the generator 3 are fixed to the floor surface 12, respectively.

At the upper portion of the right side surface of the main body case 1 in FIG. 1, there is provided an air outlet 14 for exhausting the air in the main body case 1 described above. Reference numeral 3A indicates a rotor shaft of the generator 3. The rotor shaft 3A is detachably connected to the crank shaft 2A of the engine 2. A generator ventilation fan 15 for ventilating the cooling air inside the generator 3 is provided at a connecting portion of the crankshaft 2A and the rotor shaft 3A described above. At the right end of the engine 2 in FIG. 1, the engine cooling fan 16 driven by the crankshaft 2A is mounted.

In FIG. 1, reference numeral 17 indicates a fuel tank mounted in the center of the upper portion of the main body case 1 in a suspended state, and reference numeral 18 indicates a muffler mounted on the inner portion of the exhaust port 14 described above. Further, reference numeral 19 denotes wheels mounted on the body case 1 at four lower end surfaces.

Here, when the engine 2 is set to the operating state, the rotor shaft 3A rotates together with the rotation of the crankshaft 2A, whereby the generator 3 is set to the operating state. At the same time, the generator ventilation fan 15 and the engine cooling fan 16 start operating together with the crankshaft 2A, and the outside air is simultaneously sucked into the main body case 1 from the outside air inlet 13. The generator ventilation fan 15 sucks the outside air sucked into the main body case 1 into the generator 3 from the left end portion of FIG. 1, and discharges the outside air from the generator ventilation fan 15 portion to the outside of the generator 3. To function. Then, during this time, the outside air that has passed through the generator 3 cools the rotor, the stator, and the like inside the generator 3 during the passage.

In addition, the engine cooling fan 16 is arranged such that the outside air sucked into the main body case 1 is not only sucked into the left end portion of FIG. 1 but also in other places, and the outside air discharged from the generator 3 described above. The whole of the above is targeted at the right end portion of FIG. Then, the entrained outside air is sent out from the opening 16A provided in the upper portion in FIG. 1 on the outer periphery of the engine cooling fan 16, and thereafter passes around the muffler 18,
The air is discharged from the exhaust port 14 to the outside.

Therefore, in addition to the surroundings of the engine 2,
The entire periphery of the generator 3 and the entire periphery of the exhaust system connected to the engine are effectively cooled.

A ventilation port 20 is provided so as to be connected to the upper portion of the control panel 11 in FIG. The vent 20 is equipped with a slide type panel cover 21 as a slide type opening / closing door mechanism that slides in the vertical direction. FIG. 2 shows a state in which the slide type panel cover 21 is closed, and FIG. 3 shows a state in which the slide type panel cover 21 is opened. FIG. 4 shows a front view of the control panel 11 portion.

An engine switch 22 is mounted on the lower end of the control panel 11.

The engine switch 22 is normally a "contact" state, that is, a permanent switch for setting the engine to an operating mode is used, and when the slide type panel cover 21 moves downward in FIG. The engine is urged by the slide type panel cover 21 to set the engine to the "off" state, that is, the rest mode. Figure 5
The guide rails 21A and 21B for guiding the slide type panel cover 21 are shown in FIG.

The control panel 11 further includes a main engine switch 3 which functions similarly to the engine switch 22.
0 is equipped and is connected in series to the engine switch 22 described above. Therefore, in actuality, either of them may be used to turn on / off the entire apparatus. For this reason, the main engine switch 30 is turned off and stored when the operation is stopped or the device is not used.

The operation of the slide type panel cover 21 and the vent 20 will be described.

First, when starting the apparatus, the main engine switch 30 is turned on. In this case, since the slide type panel cover 21 is closed in advance, the engine switch 22 is in the ON state. Therefore, when the main engine switch 30 is turned on as described above, the entire apparatus is started.

Next, when it becomes necessary to stop the work, the bent ridge 2 at the lower edge of the slide type panel cover 21 is immediately started.
The slide type panel cover 21 is lowered by using 1a to set the ventilation port 20 above the control panel 11 to the fully opened state. When the vent 20 is set to the fully open state, the sliding panel cover 21 is urged to set the engine switch 22 to the off state (stop mode),
The device is shut down.

In this case, in the conventional example, when the device is stopped, the operations of the generator ventilation fan 15 and the engine cooling fan 16 are also stopped at the same time, so that the temperature inside the main body case 1 is kept from the engine 2 and the generator. Although a situation in which the heat of 3 suddenly rises has occurred, in such a case, in the present embodiment, the superheated air in the main body case 1 is immediately discharged to the outside due to the action of the vent 20.

As a result, the internal temperature in the main body case 1 suddenly rises and the control system electronic parts are deteriorated at high temperature, which is caused in the prior art, and the surroundings of the fuel tank are exposed to high temperature. This has the advantage that it can be effectively suppressed in advance, and thus, for example, normal operation of the control system electronic components can be ensured for a long period of time.

Further, in the above-mentioned embodiment, the slide type panel cover 21 has been described as having a rectangular shape as a whole. As for the portion where the cable hits, the corresponding portion may be cut off.

[0025]

Since the present invention is constructed and functions as described above, according to this, the operation of the opening / closing door simultaneously sets the stop of the engine to set the vent hole above the main body case to the fully open state, thus stopping the engine. Even though the ventilation fan for the generator and the cooling fan for the engine stopped,
It is possible to quickly and quickly dissipate the hot air in the main body case to the outside, and therefore effectively suppress the rise of the internal temperature of the engine working machine even after the operation of the engine working machine is stopped. Since the opening / closing door is always opened when the engine is stopped, it is possible to reliably eliminate the occurrence of an overheated state due to forgetting to open the opening / closing door, which can increase durability of the entire device. An excellent soundproof engine working machine can be provided.

[Brief description of drawings]

FIG. 1 is a partially omitted sectional view showing an embodiment of the present invention.

FIG. 2 is a partially omitted enlarged partial sectional view showing a slide type panel cover portion of the embodiment disclosed in FIG.

FIG. 3 is an explanatory diagram showing the operation of FIG.

FIG. 4 is a left side view showing a sliding panel cover portion of the embodiment disclosed in FIG.

5 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 1 Main body case 2 Engine 3 Generator 11 Control panel 12 Floor surface 13 Outside air intake port 14 Exhaust port 15 Generator ventilation fan 16 Engine cooling fan 20 Vent port 21 Sliding panel cover as an opening / closing door 22 Engine switch

Claims (2)

[Claims] 1. A control panel provided at a central portion of one end face, an outside air intake port provided at a part of a floor surface, and an air exhaust port provided at a predetermined position on an upper side surface, In a soundproof engine working machine in which an engine and a generator connected to the engine are housed, an air vent is provided above the control panel in connection with the control panel, and an opening / closing door is provided at the air vent. A soundproof engine working machine characterized in that the engine and the generator are set to a start mode by being urged by the closing operation of the opening / closing door. 2. The soundproof engine work machine according to claim 1, wherein the opening / closing door is a sliding type opening / closing door that moves up and down along the control panel.