JPH10131762A - Power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an arrangement space for a housing and suppress its total hight. SOLUTION: In this type of a power generation device, a box-like housing 2 is divided into two. Housed in a lower chamber 12 of the housing are an engine 21, a generator 22 and a muffler 23 driven by the engine 21. The lower chamber 12 is provided with intake ports 15, 16 for taking in external air. Housed in an upper chamber 13 of the housing is an exhaust pipe 25 for the muffler which is snaked or bent. Cooling exhaust which cools the muffler 23 is fed from the lower chamber 12 to the upper chamber 13. The exhaust pipe for the muffler is cooled by the cooling exhaust. Gas exhausted from the exhaust pipe 25 for the muffler is mixed with the cooling exhaust, and discharged from one exhaust port of the upper chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power generator which is used as a power source for road facilities and outdoor work facilities, and which can also be used as an emergency power source facility.

[0002]

2. Description of the Related Art An engine-driven generator is generally used as a power generator of this type. This engine-driven generator is used as a power source for road facilities such as traffic lights and outdoor work facilities. Since it is highly likely to be exposed to dust, sunshine, etc., a structure that can withstand this natural environment for a long period of time is required. Further, since it is often used as a power source for night work, it is required to reduce noise.

The applicant of the present invention has proposed a power generation apparatus in consideration of such a point in Japanese Utility Model Publication No. 2-16022, "Soundproof engine working machine", and this technology is shown in FIG. 1 (plan view) of the above publication. As shown in FIG. 1, an engine 1 and a generator 2 driven by the engine 1 are housed in a soundproof case.

[0004]

When such a power generator is installed in a narrow space, it is required to make the power generator as small as possible to reduce the installation area.
In particular, place the generator on a sidewalk adjacent to the road,
When used as emergency power supply equipment for road equipment such as traffic lights, they are often installed in narrow spaces between street trees and flower beds so as not to obstruct pedestrians. strong. However, if the installation area is to be reduced, the soundproof case must be high due to the layout of various devices housed inside the soundproof case.

It is an object of the present invention to provide a power generation device which has a small installation area and a minimum height.

[0006]

According to a first aspect of the present invention, a box-shaped housing is divided into upper and lower portions, and an engine and a generator driven by the engine are provided in a lower chamber of the housing. A muffler and a muffler exhaust pipe having a shape meandering or bent on a substantially horizontal surface are housed in an upper chamber of the housing while opening an intake port for taking in outside air, and from the lower chamber to the upper chamber. The cooling exhaust air that has cooled the muffler is pushed in, and while cooling the exhaust pipe for the muffler, the exhaust air discharged from the exhaust pipe for the muffler is mixed with the cooling exhaust air to cool the exhaust pipe for the muffler. The power generator is configured to be discharged to the outside from one of the air outlets.

Since the exhaust pipe has a meandering or bent shape on a substantially horizontal surface, the plane space and height required for the exhaust pipe can be reduced. For this reason, the total height can be suppressed as low as possible while reducing the installation area of the housing. Therefore, for example, when the housing is installed on the side of a road, the entire height of the housing can be prevented from blocking the view in the height direction of the pedestrian, and the appearance can be made clear. Further, since the length of the exhaust pipe can be increased and the number of bent portions increases, the effect of suppressing exhaust noise can be enhanced. further,
Only one of the sides of the upper room (for example, only one of the four side walls) has an air outlet, so when installing the housing on the side of the road, select the direction in which no pedestrians can pass. Can open the exhaust vent, and does not hinder traffic.

[0008] The invention according to claim 2 is characterized in that a fan for increasing the amount of cooling exhaust air from the lower chamber to the upper chamber is provided.

With the fan, a sufficient amount of cooling air from the lower chamber to the upper chamber can be secured. As a result, the effect of cooling the inside of the housing is large, and the temperature of the exhaust gas exhausted from the exhaust port can be reduced.

According to a third aspect of the present invention, a baffle plate is provided in the upper chamber for bypassing cooling exhaust air flowing toward the exhaust port, and the baffle plate and the side wall including the exhaust port are provided between the baffle plate and the side wall including the exhaust port. The outlet of the muffler exhaust pipe is arranged so that the exhaust from the muffler exhaust pipe is discharged substantially parallel to the side wall including the exhaust port, and the cooled exhaust air and the exhaust that have cooled the muffler exhaust pipe are obstructed by the obstruction. It is characterized in that mixing is performed outside the plate and the mixture is discharged to the outside.

[0011] Since the cooling exhaust air directed to the exhaust port bypasses and cools the meandering or bent exhaust pipe, the efficiency of cooling the exhaust pipe is high. In addition, since the exhaust gas from the exhaust pipe is discharged substantially parallel to the side wall including the exhaust port, the exhaust gas mixes with the cooling exhaust air bypassed by the baffle plate and interferes with each other. It can be weakened and distributed over the exhaust outlet. Further, since the exhaust air and the wind are mixed in the passage between the baffle plate and the side wall including the air outlet, dirt such as a sound absorbing material in the upper room is reduced.

According to a fourth aspect of the present invention, there is provided a muffler cover for providing the air inlet at at least one of a lower end and an upper end of the lower chamber, extending the muffler in a substantially vertical direction, and passing the muffler through the wind. By covering with, the cooling exhaust air that has cooled the engine and the generator is introduced into the muffler cover,
After cooling the muffler, the muffler is introduced into the upper chamber.

Since the intake port for taking in the outside air is only at the lower end or the upper end of the lower chamber, the appearance of the housing is clear and the appearance is good. Further, since air is sucked only from the lower end or the upper end of the lower chamber, sound leakage from the housing can be suppressed as much as possible, and the soundproofing effect is high. Since the muffler is covered with a muffler cover, the soundproofing effect of exhaust noise is enhanced. Further, by passing the air through the muffler cover covering the muffler, the cooling efficiency of the muffler increases. Furthermore, since the muffler extends substantially vertically, the muffler can be easily piped to the lower engine and the upper exhaust pipe with a simple configuration, the piping space can be reduced, and the housing installation area can be reduced.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the front of the power generator is defined as "front", and based on this, "rear", "left", "right",
Fr indicates the direction of “up” and “down”, where Fr indicates the front side, Rr indicates the rear side, L indicates the left side, and R indicates the right side. Also, the drawings should be viewed in the direction of reference numerals. 1A and 1B are general views of a power generator according to the present invention, in which FIG. 1A shows a state in which a door is closed, and FIG. 1B shows a state in which the door is opened.

The power generator 1 is connected to an electric cable (not shown) to transmit electric power generated by the generator to desired electric equipment. For example, when the power generator 1 is used as an emergency power supply for road equipment such as a traffic light, the power generator 1 and the traffic light are connected by an underground wired electric cable, and the temporary power supply from the power generator is performed. One of the line and the normal power supply line using the commercial power supply is switched and connected.

FIG. 1A shows a vertically long box-shaped housing 2 of a power generating apparatus 1 as an outdoor self-standing soundproof housing, and a door 3 with a lock that opens halfway on the front. The housing 2 takes in outside air from the lower left and right sides, the upper front part, and the upper left and right sides, and discharges cooling exhaust air and engine exhaust to the outside from the upper rear part. Although a soundproofing material is provided on the inner surfaces of the housing 2 and the door 3, they will not be described below.

FIG. 2B shows a state in which the fuel tank 4, the battery 5, and the control unit 6 are housed inside the housing 2 at the front. The control unit 6 controls automatic start / stop of an engine and a generator, which will be described later, and switching of a power supply line, and has, for example, the following role. The built-in power failure detection circuit detects that the normal power supply line has lost power, drives the cell starter with battery power, automatically starts the engine, and switches the electrical equipment from the normal power supply line to the temporary power supply line (generator). Output line), the normal power supply line is restored (re-energized), and the power failure detection circuit detects it, switches the electrical equipment from the temporary power supply line to the normal power supply line, and automatically stops the engine and generator . In the figure, reference numeral 7 denotes an engine air cleaner.

FIG. 2 is a schematic cross-sectional view (viewed from the front) of the power generating apparatus according to the present invention.
The figure shows the battery 5, the control unit 6, and the air cleaner 7 removed. The housing 2 is divided into upper and lower parts,
Is divided into a lower chamber 12 and an upper chamber 13. The lower chamber 12 has an intake port opened at a lower end and an upper end for taking in outside air (cooling air). More specifically, lower intake ports 15 are opened on the left and right side walls of the lower frame 14 of the housing 2.
Communicates with the lower chamber 12. In addition, upper intake ports 16 are opened at the upper end of the lower chamber 12 and at the left and right side walls and the front wall (front side in the figure). These lower and upper inlets 15 ..., 16 ...
The passage for guiding air from the intake port into the lower chamber 12 is a maze passage. Therefore, the lower chamber 12 has a large soundproofing effect.

On the other hand, the lower chamber 12 houses an engine 21 and a generator 22 driven by the engine 21 in a directly connected state in a lower part, and houses a muffler 23 in a state in which the muffler 23 is extended in a substantially vertical direction in an upper part. is there. The muffler 23 has an engine exhaust pipe 2 at a lower portion thereof on a cylinder head 21 a of the engine 21.
4, and the upper portion is connected to a muffler exhaust pipe 25 extending into the upper chamber 13. The engine cooling fan 21b attached to the engine 21 draws in air from the left inside the housing 2 and discharges it to the engine shroud 21c. The generator cooling fan 22a attached to the generator 22 includes:
From the right side in the housing 2, suction is performed through the inside of the generator 22. The partition plate 11 has a through hole 11a for passing the exhaust air for muffler 25 and for moving cooling exhaust air from the lower chamber 12 to the upper chamber 13.

After cooling the muffler 23 with the cooling exhaust air that has cooled the engine 21 and the generator 22, the cooling exhaust air is sent to the upper chamber 1.
The lower chamber 12 was provided with a cooling cover 31 so as to be introduced into the lower chamber 3. Specifically, the cooling cover 31 includes an engine cover 32, a generator cover 33, and a muffler cover 34. The engine cover 32 is attached to the engine shroud 2.
1c to cover the cylinder head 21a of the engine 21 and the exhaust pipe 24 for the engine, and introduce the cooling exhaust air discharged from the engine cooling fan 21b from the upper part of the engine shroud 21c.
And, the engine exhaust pipe 24 is led to the muffler cover while being cooled. The generator cover 33 guides the cooling exhaust air discharged from the generator cooling fan 22a to the engine cover 32. The muffler cover 34 covers the muffler 23 and guides the cooling exhaust air that has cooled the engine 21 and the generator 22 to the upper chamber 13 through the hole 11a.

FIG. 3 is a schematic sectional view (viewed from the right side) of the power generator according to the present invention.
Fan 35 for increasing the amount of cooling exhaust air flowing toward
Is provided in the passage of the cooling exhaust air. More specifically, the fan 35 is disposed in the housing 2 so as to suck from the upper side of the muffler cover 34, push it into the upper chamber 13 through the through hole 11a, and discharge it to the outside.

The cooling air introduced into the lower chamber 12 from the lower and upper air inlets 15, 16,... Circumvents the storage in the lower chamber 12 while cooling the engine cooling fan 21 b and the generator cooling fan 22 a shown in FIG. Therefore, it can be said that the passage through which the wind flows is a maze passage. In addition,
The storage items in the lower chamber 12 refer to the battery 5, the control unit 6, the engine 21, the generator 22, the cooling cover 31, and the like. In the figure, 22b ... are intake ports opened at the rear of the generator 22.

FIG. 4 is a plan sectional view of the upper chamber according to the present invention, and shows one of the four side walls of the upper chamber 13 (the rear side wall 13).
3A shows that the air outlet 13b for discharging the cooling exhaust air to the outside is opened, and the air outlet 13b is covered with the screen 41. The upper chamber 13 includes two ducts (a left duct 42 and a right duct 43) that are long in the front-rear direction and are arranged near the left side wall 13c or near the right side wall 13d. Baffle 4 surrounding through hole 11a
4, and the muffler exhaust pipe 25 extending from the lower chamber 12 at a position surrounded by the baffle plate 44 and extending toward the rear side wall 13a bypassing the baffle plate 44.

More specifically, the left and right ducts 42 and 43 are ducts through which the cooling air introduced from the through holes 11a flows to the exhaust port 13b, and the inlets 42a and 43a are opened at the front side and the outlets are opened at the rear side. 42b and 43b are provided. The baffle plate has a substantially U-shape in a plan view of a front opening formed on the partition plate 11, and has an empty space for passing the muffler exhaust pipe 25 between the baffle plate and the right duct 43. The muffler exhaust pipe 25 rises through the partition plate 11, and further bends on the surface of the partition plate 11 to pass between the baffle plate 44 and the right duct 43,
This is an approximately M-shaped bent tube in a plan view in which the outlet 25a faces the passage S between the baffle plate 44 and the rear side wall 13a (the side wall including the air outlet 13b). The outlet 25a of the muffler exhaust pipe 25 is directed substantially parallel to the rear side wall 13a, so that exhaust gas is discharged substantially parallel to the rear side wall 13a.

As described above, the baffle plate 44 and the left and right ducts 4
The labyrinths 2 and 43 form a maze passage so as to bypass the cooling exhaust air flowing from the through hole 11a to the exhaust port 13b.
For this reason, the soundproofing effect of the upper room 13 is large. In addition, through hole 1
Since the cooling exhaust air flowing from 1a to the exhaust port 13b bypasses and cools the bent muffler exhaust pipe 25, the efficiency of cooling the muffler exhaust pipe 25 is high.

On the other hand, as shown in FIGS.
2, an engine 21 and a generator 22, and a muffler 23 extending substantially vertically above the engine 21 and the muffler 23. A sufficiently long exhaust pipe for the muffler is formed in the upper chamber 13 so as to meander or bend on a substantially horizontal surface. 25 is accommodated and air-cooled, so that the plane space of the housing 2 is substantially
The exhaust pipe 25 for a long muffler can be accommodated in the plane space of the exhaust pipe 25 while keeping the area for accommodating the gas turbine and the generator 22. As a result, the installation area of the power generator 1 can be reduced.

Next, the flow of the exhaust air and the cooling exhaust air in the housing 2 having the above configuration will be described with reference to FIGS. FIG.
, The exhaust of the engine 21 is
→ Muffler 23 → Flows to upper chamber 13 via muffler exhaust pipe 25. On the other hand, the cooling air (outside air) flowing into the housing 2 from the lower / upper air inlets 15,..., 16 is sucked by the engine cooling fan 21b and the generator cooling fan 22a. The cooling air sucked by the engine cooling fan 21b cools the engine 21 and serves as cooling exhaust air for the shroud 21.
c → flows to the muffler cover 34 through the path of the engine cover 32. The cooling air sucked by the generator cooling fan 22a cools the generator 22 and serves as cooling exhaust air for the generator cover 3.
3 flows to the muffler cover 34. Muffler cover 3
After cooling the muffler 23, the cooling exhaust air flowing to 4 flows from the through hole 11a to the upper chamber 13 via the fan 35.

FIG. 5 is an operation diagram of the upper chamber according to the present invention. In the upper chamber 13, the exhaust gas having passed through the muffler exhaust pipe 25 flows out of the outlet 25a to the passage S between the baffle plate 44 and the rear side wall 13a and substantially parallel to the rear side wall 13a. On the other hand, the cooling air discharged from the through hole 11a to the upper chamber 13 is blocked by the baffle plate 44, and flows to the inlets 42a and 43a of the left and right ducts 42 and 43 while cooling the muffler exhaust pipe 25. And the outlets 42b, 4 of the left and right ducts 42, 43
The cooling exhaust air flowing out of the baffle plate 3b and the rear side wall 13
and flows out substantially parallel to the rear side wall 13a. Therefore, the exhaust gas flowing out of the outlet 25a of the muffler exhaust pipe 25 and the outlets 42 of the left and right ducts 42 and 43 are used.
The cooling exhaust air flowing out of b and 43b mixes with each other, interferes with each other, weakens the momentum, and is dispersed throughout the exhaust port 13b and discharged to the atmosphere (outside).

In the embodiment of the present invention, the exhaust pipe 25 for the muffler may have a shape which is meandering or bent on a substantially horizontal surface in the upper chamber 13 of the housing 2. Further, the intake ports 15 and 16 for taking in outside air are provided in the lower chamber 1.
What is necessary is just to be provided in at least one of the lower end and the upper end of 2.

[0030]

According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect of the present invention, a box-shaped housing is divided into upper and lower parts, an engine, a generator driven by the engine, and a muffler are housed in a lower chamber of the housing, and an intake port for taking in outside air is opened. A muffler exhaust pipe having a shape meandering or bent on a substantially horizontal surface is housed in the upper chamber, and cooling exhaust air that cools the muffler is pushed from the lower chamber to the upper chamber, and the cooling exhaust air While cooling the exhaust pipe for the muffler, the exhaust air discharged from the exhaust pipe for the muffler and the cooling exhaust air are mixed and discharged to the outside from an exhaust port on one side of the upper chamber. Power generator.

Since the exhaust pipe has a meandering or bent shape on a substantially horizontal surface, the plane space and height required for the exhaust pipe can be reduced. For this reason, the total height can be suppressed as low as possible while reducing the installation area of the housing. Therefore, for example, when the housing is installed on the side of a road, the entire height of the housing can be prevented from blocking the view in the height direction of the pedestrian, and the appearance can be made clear. Further, since the length of the exhaust pipe can be increased and the number of bent portions increases, the effect of suppressing exhaust noise can be enhanced. further,
Only one of the sides of the upper room (for example, only one of the four side walls) has an air outlet, so when installing the housing on the side of the road, select the direction in which no pedestrians can pass. Can open the exhaust vent, and does not hinder traffic.

[0032] The invention according to claim 2 is characterized in that a fan for increasing the amount of cooling exhaust air from the lower chamber to the upper chamber is provided.

A sufficient amount of cooling air from the lower chamber to the upper chamber can be secured by the fan. As a result, the effect of cooling the inside of the housing is large, and the temperature of the exhaust gas exhausted from the exhaust port can be reduced.

According to a third aspect of the present invention, a baffle plate is provided in the upper chamber for bypassing the cooling exhaust air flowing toward the exhaust port, and the baffle plate and the side wall including the exhaust port are provided between the baffle plate and the side wall including the exhaust port. The outlet of the muffler exhaust pipe is arranged so that the exhaust from the muffler exhaust pipe is discharged substantially parallel to the side wall including the exhaust port, and the cooled exhaust air and the exhaust that have cooled the muffler exhaust pipe are obstructed by the obstruction. It is characterized in that mixing is performed outside the plate and the mixture is discharged to the outside.

[0035] Since the cooling exhaust air flowing to the exhaust port bypasses and cools the meandering or bent exhaust pipe, the efficiency of cooling the exhaust pipe is high. In addition, since the exhaust gas from the exhaust pipe is discharged substantially parallel to the side wall including the exhaust port, the exhaust gas mixes with the cooling exhaust air bypassed by the baffle plate and interferes with each other. It can be weakened and distributed over the exhaust outlet. Further, since the exhaust air and the wind are mixed in the passage between the baffle plate and the side wall including the air outlet, dirt such as a sound absorbing material in the upper room is reduced.

According to a fourth aspect of the present invention, there is provided a muffler cover for providing the air inlet at at least one of a lower end and an upper end of the lower chamber, extending the muffler in a substantially vertical direction, and passing the muffler through the wind. By covering with, the cooling exhaust air that has cooled the engine and the generator is introduced into the muffler cover,
After cooling the muffler, the muffler is introduced into the upper chamber.

Since the intake port for taking in outside air is provided only at the lower end and the upper end of the lower chamber, the appearance of the housing is clear and the appearance is good. Further, since air is sucked only from the lower end or the upper end of the lower chamber, sound leakage from the housing can be suppressed as much as possible, and the soundproofing effect is high. Since the muffler is covered with a muffler cover, the soundproofing effect of exhaust noise is enhanced. Further, by passing the air through the muffler cover covering the muffler, the cooling efficiency of the muffler increases. Furthermore, since the muffler extends substantially vertically, the muffler can be easily piped to the lower engine and the upper exhaust pipe with a simple configuration, the piping space can be reduced, and the housing installation area can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall view of a power generator according to the present invention.

FIG. 2 is a schematic cross-sectional view of the power generation device according to the present invention (view from the front).

FIG. 3 is a schematic cross-sectional view of the power generation device according to the present invention (a view from the right side).

FIG. 4 is a plan sectional view of the upper chamber according to the present invention.

FIG. 5 is an operation diagram of the upper chamber according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Power generation device, 2 ... Housing, 3 ... Door, 11 ... Partition plate, 11a ... Through hole, 12 ... Lower room, 13 ... Upper room, 13a ...
Rear side wall as one of four side walls, 15, 16
... lower and upper intake ports as intake ports, 21 ... engine, 21b ... engine cooling fan, 22 ... generator,
22a: generator cooling fan, 23: muffler, 25: exhaust pipe for muffler, 25a: outlet, 31: cooling cover, 32
An engine cover, a generator cover, a muffler cover, a fan, and a baffle plate.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI F02B 77/13 F02B 77/13 P F16M 1/00 F16M 1/00 G

Claims (4)

[Claims] 1. A box-shaped housing is divided into upper and lower parts, an engine, a generator driven by the engine and a muffler are housed in a lower chamber of the housing, and an intake port for taking in outside air is opened, and an upper chamber of the housing is opened. A muffler exhaust pipe having a shape meandering or bent on a substantially horizontal surface is housed therein, and cooling exhaust air for cooling the muffler is pushed from the lower chamber to the upper chamber, and the exhaust air for the muffler is exhausted by the cooling exhaust air. A power generating apparatus characterized in that exhaust gas discharged from the muffler exhaust pipe and cooling exhaust air are mixed while the pipe is being cooled, and the mixed exhaust air is discharged to the outside from an exhaust port on one side of the upper chamber. . 2. The power generator according to claim 1, further comprising a fan for increasing the amount of cooling exhaust air flowing from the lower chamber to the upper chamber. 3. A baffle plate is provided in the upper chamber for circumventing the cooling exhaust air flowing toward the exhaust port, and a baffle plate is provided between the baffle plate and a side wall including the exhaust port, from the exhaust pipe for the muffler. Exhaust gas is discharged almost parallel to the side wall including the exhaust port,
An outlet of a muffler exhaust pipe is disposed, and cooling exhaust air and exhaust air that has cooled the muffler exhaust pipe are mixed outside the baffle plate and discharged to the outside. The power generator according to claim 1. 4. The air intake port is provided at at least one of a lower end and an upper end of the lower chamber, and the muffler is extended in a substantially vertical direction, and the muffler is covered with a muffler cover for passing air. The cooling exhaust air that has cooled the engine and the generator is introduced into the muffler cover, and after cooling the muffler, is introduced into the upper chamber. Power generator.