JPS6140424A - Case containing type engine generator - Google Patents

Abstract

PURPOSE:To increase the output of an engine and to decrease the generation of suction noise, by a method wherein an engine is located to the central part of the engine, a silencer is disposed to the one side of the engin, a cooling fan to the other side, and an air cleaner is disposed in a space on the low temperature side. CONSTITUTION:An air-cooled engine 46 is disposed to the central part of a case 2. A silencer 58 is disposed to the one side of an engine 46, and a cooling fan 52 is located to the other side of the engine 46. An air cleaner 70 is situated in a space on the low temperature side partitioned by a urethane seal 74. Air, flowing in a suction hole, is fed from a space on the low temperature side. This enables increase of the output of the engine 46, and permits reduction of the generation of suction noise.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement of a case-housed engine generator in which an air-cooled engine, a generator, and auxiliary equipment are housed in a case.

(Prior art) Case-housed engine generators have been widely used in the past, but the arc cleaner of the conventional case-housed engine generators is placed anywhere inside the case, and the intake holes are also located outside the case. It is customary for the frontage to open toward the front (Utility Model Publication No. 56-50141).

For this reason, the air of 'Q' 94 inside the case flows into the intake hole, resulting in a problem that the output of the engine decreases and intake noise leaks out of the case.

(Object of the Invention) An object of the present invention is to provide a case-housed engine generator that allows low-temperature intake air to flow in through the intake hole of an air cleaner and prevents intake noise from leaking to the outside.

(Structure of the Invention) The present invention provides a case-contained engine generator in which an air-cooled engine, a generator, and auxiliary equipment are housed in a case having a substantially rectangular external shape, in which the air-cooled engine is arranged in the center of the case, and the engine A silencer is placed on one side of the engine, a cooling II fan is placed on the other side of the engine, and an air cleaner is placed in a space on the low temperature side separated by a partitioning member attached to the outer periphery of the fan cover that covers the cooling fan. , the air cleaner's intake hole is opened toward the inside of the case.
This is a case-housed engine generator.

(Example) In FIG. 1 showing a case-housed engine generator to which the present invention is applied, 2 is a case, and inside the case 2, which has an approximately straight outer shape, is an engine, a generator, and auxiliary equipment, which will be described later. It is accommodated. The upper part of the obstetric tank 4 is exposed on the upper surface of the case 2, and a handle 6 is located above the fuel tank 4.
is provided. A fuel filler port 8 and an oil level gauge 10 are provided on the front side of the upper surface of the fuel tank 4 .

On the front plate 12 of the case 2, a front panel 14, an air cleaner cover 16, a starter handle 18, and a lubricating oil filler port 20 (all operating portions) necessary for operation and maintenance are centrally arranged.

The case 2 has a front plate 12 and a rear plate 22 as shown in FIG.
, the right side plate 24, the left side plate 26, and the bottom plate 28 are assembled with screws into a substantially rectangular parallelepiped shape with an open top, and the top opening is covered with the fuel tank 4. An opening 30 for attaching the front panel 14 is formed in the -F section of the front plate 12, and an opening 31 for the starter handle 18, an opening 20a for the rIJ oil filler port 20, and a lou bar 128 are formed in the lower part. There is. rear plate 22,
Loopers 22a are also provided on the right side plate 24 and the left side plate 26, respectively.
, 24a, 26a are formed. The bottom plate 28 is provided with an annular projection 32 for mounting the engine and the power generator.
It is designed to be fixed at a. Please note that the installation is done using bolt 36.
is tightened from the bottom side of the bottom plate 28. The bottom plate 28 is provided with a hole 38 for attaching a tool, and the head 40a of the tool 40 is fitted into a cap 38b that fits into the protrusion 38a of the hole 38, and the tool 40 is attached using rubber 42. It is attached removably. Further, legs 44 are fixed to the bottom surface of the bottom plate 28.

Front plate 1 from the assembled case-housed engine generator
In FIG. 3, which is seen from the front with part 2 removed, an engine 46 is disposed at the lower center of the fuel tank 4.

The engine 46 is, for example, a side-valve single-cylinder gasoline engine, and the cylinder portion of the engine 46 is covered with a plate-shaped bracket (described in detail later) without serving as an engine cover. A power generator 150 is provided on one side of the engine 46, that is, the right side in FIG. 3, and the power generator 150 is connected to the output shaft of the engine 46.

Emitted as shown in Figure 3? ? [A centrifugal fan (not shown) is installed on the engine 46 side of the 50, and generates 115
In the part facing the right side plate 24 inside the cover 500 of the generator 50, there are electrical components such as a voltage regulator, a rectifier (not shown), and a shade. A gasket 50h is provided on the outer surface of the cylindrical cover 50a.
is fixed to the cover 50a, and the gasket 50h is in close contact with the right side plate 24 to guide air sucked in by the centrifugal fan from the looper 24a (FIGS. 2 and 3) into the cover 50a.

A fan cover 52 is provided on the other side of the engine 46, that is, the left side in FIG. 3, and a centrifugal fan (cooling fan) is housed in the fan cover 52. Further to the left of the fan cover 52, a recoil starter 56 having a leg portion 56e for forming a gap 52c for receiving the carburetor 54 and the coolant 1 is arranged.

The fuel tank 4 shown in FIG. 3 is provided with an air breather 4a, and vinyl tubes 4c are fitted into the air cleaners 4a through connecting vibes 4b having a narrow inner diameter of, for example, about 2#.

The vinyl tubes 4C are arranged side by side inside the handle 6, and their ends are open to the atmosphere.

In FIG. 4, which is seen from above with the fuel tank 4 and handle 6 removed from the case-housed engine generator in the assembled state, there is a sound-reducing space in the space between the generator 50 and the fuel tank 4 on the rear panel 22 side. A container 58 is arranged.

An exhaust pipe 59 is connected to the silencer 58, and an 8!1 sounder 58
The exhaust port 60 is provided on the right side. The silencer 58 has an upper cover 62 and a lower cover 64 as shown in FIG. 4a.
, covered by a side cover 66.

The upper cover 62 also covers the upper part of the engine 46,
An opening 62a1 and a plug hole 62b are formed. A spark preventer 160a made entirely from M- is attached to the exhaust port 60 of the muffler 58 to prevent discharge of sparks.

As shown in FIG. 3, the upper cover 62 has a gap 63 between it and the fuel tank 4, and a part of the cooling air generated by the centrifugal fan 52a flowing out from the opening 62a flows through the gap 63 to cool the fuel and the tank 4. is prevented from becoming high temperature due to the heat of the silencer 58. The cooling air in the gap 63 is discharged from the looper 2/Ia at the top of the right side plate 24, and most of the cooling air from the centrifugal fan in the fan cover 52 and the cooling 111ffl by the centrifugal fan in the power generator 50 are discharged from the looper on the rear plate 22. 2
It is designed to be discharged to the outside from 28.

In the space surrounded by the power generation C150, the silencer 58, and the fuel tank 4, there is an AC outlet attached to the front panel 14,
A voltmeter, a DC outlet, a crane saw, an oil warning lamp, etc. (all not shown) are accommodated. Further, the front panel 14 is formed with a Hertz switching window, an inverted groove, and an opening (none of which are shown). There is a knob for operating the engine (upside down), and the engine is operated by operating the knob.

As shown in FIG. 4, the carburetor 54 is connected to an intake pipe 68 bent in a substantially U-shape, and an air cleaner 70 is attached to the carburetor 54. A rod 54C is connected to a throttle valve lever 54a of the carburetor 54 via a tension spring 54b, and the rod 54c is connected to a governor lever 72. The choke valve lever 54dk of the carburetor 54: Lzz<-54e #□8 The tip of the lever 54e is exposed from the front plate 12.

These intake necks are connected to the intake pipe 6 as shown in FIG. 4(C).
It is fixed to the flange portion 68a of No. 8 through a packing 68b and an insulator 68c, and between the carburetor 54 and the air cleaner 70 with a through bolt 70b via a carburetor support plate 70a and a packing 68b. A center bolt 70c is screwed into the through bolt 70b protruding into the air cleaner 70, as shown in Fig.'i55, and a perforated plate 70d1 is attached to the tip of the center bolt 70c.
0e, bolt 70 that fixes the air cleaner cover 16
(7 are screwed together (see Figure 4 (f'l)).

The air cleaner cover 16 is located at the opening 14 of the front panel 14.
1, and the intake hole 70h of the air cleaner 70 opens inward. .

As shown in FIGS. 3 and 4, a urethane seal 74 (divided portion U) is provided around the fan cover 52. The urethane seal 74 separates the space inside the case 2, and is fixed to the front plate 12, the rear plate 22, the bottom plate 28, and the vaporizer 54 as shown in FIG. Almost no air from the engine 46 or silencer 58 side, which is at a high temperature, flows into the divided space on the intake device side.In addition, there is a gap between the urethane seals 74 in the passage section of the tension spring 54b. (Figure 4).

As shown in FIG. 6, a governor machine WS76 is provided at the rear of the engine 46. Governor defeat (1476 is governor gear 76a1 link 76b1 thruster-76c,
It consists of a governor shaft 76d%, etc., and the link 7 controls the movement of the governor weight 76e of the governor gear 76a by centrifugal force.
The 6b1 thruster 76C functions as a threshold for converting the rotation of the governor shaft 76d. Governor @76d has engine 46
It protrudes from the rear side. Note that 46a is a side cover of the crankcase, and 46b is a camshaft.

The engine control section will be described with reference to FIG. 7, which shows the engine 46 viewed diagonally from above on the rear side. The governor shaft 76d is fixed to the rotation center 72a of the governor lever 72, and the lower end of the governor lever 72 is connected to the regulator 72c by a tension spring 72b. regulator 72
c is rotatably attached to the engine 46 at ports 1 to 72d. There is a connection life 72 to the regulator 72C.
One end of c is connected, and the connecting wire ff72e is connected to engine 4.
6 and extends to the front side of the engine 46.

On the front side of the engine 46, there is a bracket 1 to 78, a con I.
Roll lever 80. Control shift 1 lever 82 and the like are attached. The control lever 80 is rotatably attached to the bracket 78 with a bolt 80a, and the wire connection portion 80 of the control lever 80
The other end of the connection wire 72e is connected to b. A locking portion 80G is formed on the control lever 80 and J3
A tension spring 80d is suspended between the locking portion 78a and the locking portion 80c of the bracket 78.

The tension spring 80d is mounted on the right side of the bolt 80a in the assembled state shown in FIG.
The control lever 80 is biased in the direction of rotating to the right about point a.

The bracket 78 has a limit switch ring (= J plate 78
A b1 sub-bracket 78c is formed.

The long hole 80e of the control lever 80 has a controller 1-[1
- A protrusion 82a of the shift lever 82 is slidably attached. A stepped portion 82b is formed at the lower part of the control shift lever 82, and a protrusion 82c is also provided at the upper front surface. The protrusion 82C fits into the inverted groove of the front panel, and the knob for operating the engine is fixed to the protrusion 82c protruding from the front.

In addition, as shown in Fig. 3, the control shift lever 82
A lever 84a of a fuel cock 84 is connected to the lower end of the fuel cock 84. The fuel cock 84 is provided with a fuel filter 84b, and a vibrator 84C and a vibrator 84d are connected to the fuel cock 84 so that fuel from the fuel tank 4 does not flow therethrough. Further, a Hertz switching bolt 86 is attached to a nut 86a on the sub-bracket 78c of the bracket 78 so that its position can be adjusted.
The control lever 80 has a function of regulating the end position of the control lever 80, which is rotated to the right by the tension spring 80d. Regarding the mounting of the limit switch on the bracket 78, a limit switch 78d is mounted on the plate 78b. The limit switch 78d has a function of opening and closing the ignition circuit of the ignition circuit (not shown).

Next, the operation will be explained. During operation, the intake air flowing into the intake hole 70h shown in FIG.
Since it flows from the space on the low temperature side separated by Figure 4),
The intake air of the engine is always maintained at a low temperature, no dust is sucked in through the intake hole 70h, and the intake noise is quiet and does not reach the outside.

Furthermore, since the cooling air sucked by the centrifugal fan 52a also flows in from the space on the low temperature side separated by the urethane seal 74,
Cold 1 (I efficiency is good at low temperature. The cooling air of the generator 50 sucked in by the centrifugal fan is also packed 50 hours (Figure 3)
Since it is sealed, external low-humidity air from the looper 248 directly flows in, and cooling efficiency is also good.

When inspecting the air cleaner 70, turn the bolt 70a to remove the cover 16, inspect the internal element 70c,
At this time, since the cover 16 is provided on the front panel 14, the operator can inspect the air cleaner 70 while facing the front panel 14, and the operator does not have to move. do not.

(Effects of the Invention) As explained above, according to the present invention, the engine 46 is disposed in the center of the case, and the silencer 5 is disposed on one side of the engine 46.
8 and a cooling fan on the other side of the engine,
An air cleaner 70 is disposed in a space on the low temperature side separated by a urethane seal 74 (dividing member) provided on the outer periphery of a fan cover 52 that covers the cooling fan.
Since the intake hole 7C1 of 0 was opened toward the inside of the case,
The air flowing into the intake hole 70h flows from the high-temperature muffler 58 side to the low-temperature side space partitioned by the urethane seal 74, thereby increasing the output of the engine 46.

Since the intake hole 70h opens toward the inside of the case 2, the intake noise is less likely to reach the operator who is in the front of the case 2, and the intake noise can be reduced.
Garbage is less likely to be inhaled at 0h, and the element 70e is prevented from becoming dirty, thereby extending the inspection period of the air cleaner 70.

Furthermore, since the cover 16 of the air cleaner 70 can be placed on the front surface of the case 2, the air cleaner 70 can be easily inspected and cleaned from the front surface of the case 2.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a case-housed engine generator to which the present invention is applied, Fig. 2 is an exploded perspective view of the case, and Fig. 3 is a front view of the case-housed engine generator with the front plate removed. Figure 4 is a plan view (top view) of a case-housed engine generator with the fuel tank removed, Figure 4 (a) is an exploded perspective view of the muffler, and Figure 4 (C) is an exploded view of the carburetor. FIG. 5 is a sectional view taken along the line V--■ in FIG. 3, FIG. 6 is an exploded perspective view without the governor mechanism shown, and FIG. 7 is an exploded perspective view of the engine brake 11. 2... Case, 4... Maternity tank, 6... Handle, 12... Front plate, 14... Front panel, 16... Air cleaner cover, 18...
・Starter handle, 20...Lubricating oil filler port, 46・
... Engine, 52a... Centrifugal fan, 50... Generator, 58... Silencer, 54... Carburetor, 56...
・Recoil starter, 70...Air cleaner, 70
d... Perforated plate, 70e... Niremen l-170q.
...Pol (-170h...Intake hole, 74...Urethane seal

Claims (2)

[Claims] (1) An air-cooled engine is housed in a case with an approximately rectangular external shape.
In case-housed engine generators that house the generator and auxiliary equipment, the air-cooled engine is placed in the center of the case, a silencer is placed on one side of the engine, and a cooling fan is placed on the other side of the engine to cool the engine. A case housing characterized in that an air cleaner is arranged in a space on the low temperature side separated by a partition member provided on the outer periphery of a fan cover that covers the fan, and the air cleaner has an intake hole opening toward the inside of the case. type engine generator. (2) The case-housed engine generator according to claim 1, wherein the air cleaner cover is detachably provided on the front surface of the case.