JP2008082207A - Exhaust muffler of engine generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine generation device receiving an exhaust muffler in the inside of a package, simplifying the support configuration of the exhaust muffler and preventing infiltration of rain water from a support part into the inside of the package. <P>SOLUTION: The engine generation device 1 receives the exhaust muffler 23, which comprise an exhaust pipe 22, a main body and an exhaust tail pipe 24, in the inside of the package 10. In the engine generation device 1, a flange 23 is formed on one side of the exhaust muffler 23, and the exhaust muffler 23 is attached to a package side 10a from the outside of the package 10 by bolts 41. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technology for mounting an exhaust silencer housed in a package of an engine power generator.

2. Description of the Related Art Conventionally, an engine power generation apparatus that can supply electric power from a generator using engine drive as power is known. Engine power generators are used in various ways as power supply devices during disasters or as cogeneration systems including air conditioning and hot water supply.
In addition, a low noise type engine power generation device in which an exhaust silencer is housed in a package is also known. Noise is reduced by storing an exhaust silencer, which is a noise source, inside the package.
For example, Patent Document 1 discloses a low noise type engine power generator in which an exhaust silencer is housed in a package.
JP 2004-60511 A

The engine power generator may be installed outdoors. At this time, rainwater may enter the engine power generator. Rainwater erodes equipment and components inside the package.
On the other hand, a drainage mechanism is not configured inside the package so that a fuel leak should not affect the outside of the package. That is, the rainwater that has once entered the inside of the package is not drained to the outside. For this reason, various measures for preventing intrusion of rainwater are taken in the engine power generator.

For example, when the exhaust silencer is supported on the side of the package, the fixture penetrates the package outer plate. At this time, rainwater may infiltrate into the package from this penetration location.
In recent years, exhaust silencers have been downsized due to improvements in the structural technology of the exhaust silencers themselves. Therefore, the exhaust silencer can be supported inside the package with the minimum support structure.
Therefore, the problem to be solved is to simplify the support structure of the exhaust silencer and prevent rainwater from entering the package from the support portion in the engine power generation device that houses the exhaust silencer inside the package.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in claim 1, in the engine power generation device in which the exhaust silencer is housed in the package, a flange is provided on one side of the exhaust silencer, and the exhaust silencer is attached to the package outer plate with a fixture. is there.

  According to a second aspect of the present invention, the exhaust silencer makes the attachment position of the exhaust pipe higher than the attachment position of the exhaust tail pipe.

  In Claim 3, when the diameter of the said exhaust tail pipe is made smaller than the diameter of the said exhaust pipe, and attaching a local communication exhaust pipe, the said exhaust tail pipe is inserted and attached to a local communication exhaust pipe. .

  As effects of the present invention, the following effects can be obtained.

In claim 1, the exhaust silencer can be supported only by the fixture. That is, there is no need for a support member for the exhaust silencer. In this way, the number of members of the engine power generator can be reduced.
Further, even if rainwater enters from the gap between the fixtures, the rainwater only enters the exhaust silencer without entering the package. In this way, it is possible to prevent rainwater from entering the engine power generator.

  According to the second aspect, even if rainwater enters from the exhaust tail pipe, the rainwater can only enter the exhaust silencer body and can be prevented from entering the exhaust pipe. In this way, the safety of the engine power generator is improved.

  According to the third aspect, the local communication exhaust pipe can be attached to the engine power generator without removing the exhaust tail pipe from the exhaust silencer. In this way, the installation workability of the engine power generator can be improved.

Next, embodiments of the invention will be described.
FIG. 1 is a side view showing an overall configuration of an engine power generator according to an embodiment of the present invention, FIG. 2 is a cross-sectional configuration diagram showing the overall configuration of an exhaust silencer, and FIG. It is the section lineblock diagram showing the state where the communication exhaust pipe was attached.

  First, the overall structure of the engine power generator 1 according to an embodiment of the present invention will be briefly described with reference to FIG. In FIG. 1, the opening and closing door and the outer plate are removed so that the inside of the engine power generator 1 can be easily understood.

  As shown in FIG. 1, the engine power generation device 1 is a device including a package 10 that opens an intake port 12 and an exhaust port 17.

The engine 20 includes an intake pipe 21, an exhaust pipe 22, a fuel tank 26, and a radiator 27 in the periphery. The radiator 27 is provided between the exhaust port 17 and the radiator fan 28.
The radiator fan 28 is driven by the engine 20 via a pulley (not shown). The radiator 27 is a device that cools the engine cooling water by the ventilation formed by the radiator fan 28. Further, ventilation by the radiator fan 28 not only cools the radiator 27 but also passes through the inside of the package 10 and cools devices that generate heat such as the engine 20 and the generator 31. Details of ventilation inside the package 10 will be described later.
Further, the intake pipe 21 is provided with an intake pipe inlet 21a at a substantially central portion inside the package, and sucks air.
On the other hand, the exhaust pipe 22 is connected to an exhaust silencer 23 having one end attached to the side surface where the exhaust port 17 is opened. The exhaust silencer 23 is connected to an exhaust tail pipe 24 that protrudes to the outside.

  The generator 31 is a device that generates electric power using the driving of the engine 20 as power and supplies the generated electric power to other devices. A control panel 32 is installed above the generator 31. The control panel 32 houses a controller or the like that operates the engine power generator 1.

  In the engine power generation device 1, an intake port 12 and an exhaust port 17 are opened on both side surfaces of the package 10. The intake port 12, the exhaust port 17, and the radiator fan 28 form ventilation that circulates inside the package 10. This ventilation cools the engine 20, the generator 31, and the like that generate heat during operation. In particular, the engine 20 generates a large amount of heat among the devices and requires the most cooling.

By the way, in the engine power generator 1, the inside of the package 10 is not provided with a drainage structure. This is because, for example, even if there is a fuel leak from the fuel tank 26, the fuel does not flow out of the package 10.
The engine power generator 1 may be installed outdoors. Therefore, for example, when rainwater enters from the intake port 12 or the exhaust port 17, rainwater that has entered from the inside of the package 10 is not drained. Rainwater that enters the inside of the package 10 corrodes the equipment. Therefore, the engine power generator 1 has various measures for preventing rainwater intrusion.

For example, the intake hood 11 is provided from the outside of the package 10 in order to prevent rainwater from entering the intake port 12. The intake hood 11 has an opening in the lower portion, that is, a U-shape in a plan sectional view, and covers the intake port 12.
With such a configuration, the air taken from below the intake hood 11 flows upward in the intake hood 11 and is guided to the intake port 12.

  On the other hand, the exhaust hood 16 is provided from the outside of the package 10 in order to prevent rainwater from entering the exhaust port 17. The exhaust hood 16 is formed in a box shape having an opening on the exhaust port 17 side as a box, and covers the exhaust port 17. Further, the exhaust hood 16 is opened by providing a shutter 18 above the surface facing the exhaust port 17.

  Here, the configuration of the exhaust silencer 23, which is a feature of the present invention, will be described with reference to FIGS. FIG. 3 shows a configuration in which the local communication exhaust pipe 43 is attached to the engine power generator 1.

First, the mounting structure of the exhaust silencer 23 will be described in detail with reference to FIG.
As shown in FIG. 2, the exhaust silencer 23 is configured to be attached to the package side surface 10a in which the exhaust port 17 is opened. The exhaust silencer 23 has a flange 23 a formed on a side surface that communicates with the exhaust tail pipe 24. In the exhaust silencer 23, the flange 23a is fixed by a bolt 41 from the outside of the package side surface 10a via the package side surface 10a and the cushioning material 42. The buffer material 42 is a material having viscoelasticity and capable of absorbing vibration, and the material is not particularly limited in this embodiment.

With such a configuration, the exhaust silencer 23 can be supported only by the bolts 41. That is, the support member for the exhaust silencer 23 is not particularly required. In this way, the number of members of the engine power generator 1 can be reduced. Even if rainwater enters from the gap between the bolt 41 and the flange 23 a, the rainwater does not enter the package 10 and only enters the exhaust silencer 23.
In this way, it is possible to prevent rainwater from entering the engine power generator. In addition, since the exhaust silencer 23 usually has a drainage mechanism (not shown), it can drain to the outside even if rainwater enters.

Similarly, the internal configuration of the exhaust silencer 23 will be described in detail with reference to FIG.
As shown in FIG. 2, in the exhaust silencer 23, the exhaust pipe 22 is configured to be connected to the exhaust silencer 23 at a position higher than the exhaust tail pipe 24 by a height L. More specifically, the axis of the exhaust tail pipe 24 is disposed below the axis of the exhaust silencer 23, and the axis of the exhaust pipe 22 is disposed above the axis of the exhaust silencer 23. The lower end of the outlet of the exhaust pipe 22 is configured to be higher than at least the lower end on the inlet side of the exhaust tail pipe 24.

  By adopting such a configuration, even when rainwater enters from the exhaust tail pipe 24, the rainwater only enters the exhaust silencer 23 and can be prevented from entering the exhaust pipe 22. In this way, the safety of the engine power generator 1 is improved. As described above, since the exhaust silencer 23 has a drainage mechanism (not shown), it can drain to the outside even if rainwater enters.

Next, the mounting configuration of the local communication exhaust pipe 43 will be described in detail with reference to FIG.
As shown in FIG. 3, the diameter 24 d of the exhaust tail pipe 24 is configured to be smaller than the diameter 22 d of the exhaust pipe 22. Usually, a general-purpose pipe is used as the exhaust pipe 22 or the exhaust tail pipe 24. The type of general-purpose pipe is determined by the size of the diameter. The exhaust tail pipe diameter 24d is configured to be one kind of diameter smaller than the exhaust pipe diameter 22d.

With such a configuration, when the local communication exhaust pipe 43 is attached, the exhaust tail pipe 24 can be attached by being inserted into the local communication exhaust pipe 43. Here, the local communication exhaust pipe 43 is a communication pipe for connecting the exhaust pipes and exhausting only at one place, for example, in a place where a plurality of engine power generators 1 are installed.
In this way, when installing the engine power generator 1, the operator can attach the local communication exhaust pipe 43 without removing the exhaust tail pipe 24. That is, the installation workability of the engine power generator can be improved.

The side view which showed the whole structure of the engine electric power generating apparatus which concerns on the Example of this invention. The cross-sectional block diagram which showed the whole structure of the exhaust silencer. The cross-section block diagram which showed the state which attached the local communication exhaust pipe to the exhaust silencer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine power generator 10 Package 10a Package outer plate 22 Exhaust pipe 22 Exhaust pipe diameter 23 Exhaust silencer 23a Flange 24 Exhaust tail pipe 24 Exhaust tail pipe diameter 41 Bolt 42 Flange 43 Local communication exhaust pipe

Claims (3)

In the engine power generator that houses the exhaust silencer inside the package,
A flange is provided on one side of the exhaust silencer,
The engine power generator, wherein the exhaust silencer is attached to a package outer plate with a fixture. The engine power generator according to claim 1, wherein the exhaust silencer makes an attachment position of the exhaust pipe higher than an attachment position of the exhaust tail pipe. The diameter of the exhaust tail pipe is smaller than the diameter of the exhaust pipe,
The engine power generator according to claim 1, wherein, when a local communication exhaust pipe is attached, the exhaust tail pipe is attached by being inserted into the local communication exhaust pipe.

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