JPS6224749Y2 - - Google Patents

Description

[Detailed description of the invention] The purpose of this invention is to improve the engine cooling performance while downsizing the engine generator with respect to an engine cooling air exhaust system for an engine generator that has a decorative cover around the engine generator. shall be.

Generally, a portable engine generator is constructed by directly connecting a forced air-cooled engine to a generator driven by the engine, and surrounding it with a decorative cover.

However, when the area around the engine generator is covered with a decorative cover like this, the exhaust resistance of the cooling exhaust air passing through the engine cooling air exhaust passage formed inside the decorative cover increases, making it difficult to sufficiently cool the engine. In order to do this, the exhaust passage formed inside the decorative cover must be made large, or the fan that generates the cooling air must be made large.The decorative cover must be placed close enough to the engine and generator to make the entire engine-generator smaller. I couldn't do it.

This invention was proposed in order to eliminate the above-mentioned drawbacks.The present invention was proposed to eliminate the above-mentioned drawbacks.
The entire engine generator can be made smaller by dividing the exhaust air into two parts: cooling exhaust air that cools the cylinder head and cooling exhaust air that cools the cylinder block, and allows the exhaust air that cools the high-temperature cylinder head to be released directly to the atmosphere without resistance. However, it is possible to supply a large amount of cooling air to the high temperature cylinder head.

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

Figure 1 shows an overall perspective view of the engine generator,
This engine generator G is a vertical forced air-cooled engine 1
and a generator 2 driven by this are directly connected side by side and fixed on the machine stand 3.

A fuel tank 4 is mounted and fixed above the engine 1, and a handle 5 made of a pipe is erected from the casing 2a of the generator 2.

The engine 1 and the generator 2 are covered with a control panel 6 and a decorative cover 7 .

That is, the control panel 6 includes a control panel mounting plate 10a attached to a fan case mounting plate 9 that accommodates the cooling fan 8 of the engine 1, and a control panel mounting plate attached to a boss 11 formed protruding from the casing 2a of the generator 2. 10b and is secured with screw 18.

As shown in FIG. 3, the control panel mounting plate 10b attached to the boss 11 of the casing 2a of the generator 2 is formed in a shape that covers the rear surface, top surface, and right end surface of the upper space 17 of the generator 2. The decorative cover 7a on the right end side has many ventilation holes 12, and the decorative cover 7b on the upper side is folded down in the middle part in an inclined manner, so that the decorative cover 7 can be used as a generator. 2, the engine 1 on the top decorative cover 7b
The tip end 19 is the cylinder head 1a of the engine 1.
It is located at the boundary between the cylinder block 1b and the cylinder block 1b.

In addition, the tip 1 of the decorative cover 7b on the top surface is
9 is fixed with a screw 15 to a portion obtained by folding up the mounting flange 14 of the handle 5 into an inverted Z shape, which is attached to the handle mounting seat 13 formed protrudingly on the upper surface of the casing 2a of the generator 2.

Further, the rear decorative cover 7c is integrally formed with the upper and right end decorative covers 7a and 7b.

The flow of engine cooling air in the engine generator configured as above will be explained next.

The cooling air generated by fan 8 is transferred to fan case 1.
6 and is sprayed onto the front surface of the cylinder block 1b and cylinder head 1a (arrow A in FIG. 2). The cooling air that has cooled the cylinder block 1b passes under the decorative cover 7b on the top surface, and is discharged to the outside from the ventilation hole 12 provided in the decorative cover 7a on the right end surface while ventilating and cooling the upper space 17 of the generator. (arrow B in Figure 2).

On the other hand, the cooling exhaust air that has cooled the high-temperature cylinder head 1a is directly discharged to the outside without resistance through the upper part of the decorative cover 7b on the upper surface (arrow C in FIG. 2).
As a result, the cooling air generated by the fan 8 automatically blows a large amount of cooling air to the high-temperature cylinder head 1a, thereby effectively cooling the engine 1.

Although the decorative cover 7 of the above embodiment integrally forms the top, rear, and right end surfaces of the generator 2 and also serves as the control panel mounting plate 10b, it is also possible to form each separately and attach them. good.

As described above, the present invention uses a decorative cover on the top of the decorative cover attached to the engine generator to divide the engine cooling exhaust air into two parts: the cylinder head cooling exhaust air and the cylinder block cooling exhaust air. Since the cooling exhaust air is discharged directly to the outside without resistance, a large amount of cooling air is automatically supplied to the high-temperature cylinder head, and the engine cooling performance can be fully demonstrated. By installing the engine generator sufficiently close to the engine, the overall external size of the engine generator can be made small while still providing sufficient engine cooling.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an overall perspective view of the engine generator, Fig. 2 is a front view with the control panel removed, Fig. 3 is a side view, and Fig. 4 is a main part. FIG. 1...Engine, 1a...Cylinder head, 1
b... Cylinder block, 2... Generator, 6...
Control panel, 7... Decorative cover, 7a... Decorative cover on the end face opposite to the engine, 7b... Decorative cover on the top surface, 7c... Decorative cover on the rear side, 12
...ventilation hole.

Claims (1)

[Scope of utility model registration request] A generator 2 is arranged on the side of the engine 1, a control panel 6 is arranged on the front side of the engine 1 and the generator 2, and the upper surface, the rear surface, and the end surface of the upper space 17 of the generator 2 on the opposite side from the engine 1. Makeup cover 7a/7
b and 7c, and a ventilation hole 12 is provided in the decorative cover 7a on the end surface thereof, and the decorative cover 7 on the upper surface is provided with a ventilation hole 12.
The tip 19 is formed by forming at least a part of b into an inclined shape.
is located at the boundary between the cylinder head 1a and the cylinder block 1b of the engine 1, and the cooling exhaust air that cools the cylinder block 1b is distributed through the decorative cover 7a and the cylinder block 1b.
7b and 7c, and is discharged to the atmosphere from the ventilation hole 12 of the decorative cover 7a on the end face, and a large amount of cooling exhaust air that cools the high temperature cylinder head 1a is guided upward by the decorative cover 7b on the upper face. An engine cooling wind exhaust device for an engine generator, characterized in that it is configured to discharge air directly to the atmosphere.