JPS6357609B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention connects a generator to one end of the output shaft of an engine body, and connects a cooling fan and a starting device such as a recoil starter to the other end. The present invention relates to an internal combustion engine-driven power generation device.

(Prior Art) In conventional internal combustion engine-driven power generators of this type, the engine's carburetor and air cleaner were usually provided outside of the side surface parallel to the engine output shaft. In the case where the air cleaner is installed on the side of the engine, the width dimension in the direction perpendicular to the output shaft of the engine becomes large, and the overall size of the device becomes large, which is particularly difficult for portable internal combustion engine power generation devices. There was a problem with poor portability.

Furthermore, in a portable internal combustion engine driven generator, the outside is generally surrounded by a cover with a handle. The cover is designed to be as small as possible. However, the fact that the cover becomes smaller means that the temperature inside the cover increases due to the heat from the engine or muffler, and the air cleaner, carburetor, intake pipe, etc. placed inside the cover increase. This is not preferable because problems such as a fuel percolation phenomenon or a decrease in intake air filling efficiency are likely to occur due to an increase in the temperature of the intake system members. Due to these contradictory advantages and disadvantages, conventional portable internal combustion engine-driven power generators are not sufficient in terms of both portability and engine output performance, and there is room for improvement in this respect.

(Object of the Invention) In view of the above-mentioned problems with conventional internal combustion engine-driven power generation devices, the present invention takes into account both the space and heat influence aspects of the arrangement of each component of the generator unit within the work equipment cover. The purpose of this invention is to provide an internal combustion engine-driven power generation device that can be made compact and maintain the output performance of the engine.

(Structure of the Invention) The internal combustion engine-driven power generation device of the present invention has a generator coupled to one end of the output shaft of the engine body, and a cooling fan covered by a fan cover and a starter device coupled to the other end. In a portable internal combustion engine-driven power generation device in which the outer periphery of a generator unit is surrounded by a work equipment cover and is provided with a handle, the engine body inside the cover is viewed from above with a generally rectangular horizontal section of the work equipment cover. A muffler is disposed at one corner on the generator side, and an intake pipe communicating with the intake port of the engine body is disposed at one corner on the starter side and axially outward from the fan cover. an air cleaner communicating with the intake pipe via the carburetor is provided at the other corner, and a corner located outside the fan cover and above the starter device; The present invention is characterized in that the vaporizer is disposed in a space.

(Embodiment) FIGS. 1 and 2 show an internal combustion engine-driven power generator Z according to an embodiment of the present invention. This power generation device Z has the surroundings of a generator unit X, which will be described later,
This is a cover-type portable power generator surrounded by a working machine cover 17 with a handle 10 and a fuel tank 9.

The generator unit It is composed of a fan 4 and a recoil starter 6.

One side 1 parallel to the output shaft 2 in the engine body 1
An intake pipe 13 is connected to the intake port 12 opened to the intake port 1.
is connected. The intake pipe 13 extends in a bent shape from the intake port 12 toward the recoil starter 6 side, passing diagonally above the fan cover 24 . The bent portion 13b of the intake pipe 18 on the intake upstream side is located at one side of the corner space 14 above the recoil starter surrounded by the fan cover 24, the recoil starter 6, the work equipment cover 17, and the fuel tank 9. It is located at the side corner 14a. Further, an opening end 13a of the intake pipe 13 on the intake upstream side is opened from one corner 14a of the corner space 14 toward a central corner 14b thereof. Furthermore, a carburetor 7 disposed in the center part 14c of the corner space 14 is attached to the open end 13a of the intake pipe 13, and the other end of the carburetor 7 is attached to the other end of the corner space 14. An air cleaner 8 located at the corner 14b is attached.

On the other hand, an exhaust port 16 that opens on the side surface 15 of the engine body 1 orthogonal to the output shaft 2 has a
The generator 3, the work equipment cover 17, and the fuel tank 9
A muffler 25 arranged in the corner space 19 surrounded by is connected.

As mentioned above, the intake pipe 13 connected to the intake port 12 opened on the side surface 11 of the engine body 1 parallel to the output shaft 2 is connected to the output shaft 2 through the corner space 14 formed above the recoil starter 6. When the carburetor 7 and the air cleaner 8 are installed at one end 13a of the intake pipe 13 in the corner space 14 by extending in a direction perpendicular to Compared to the case where the carburetor 7 etc. are directly attached to the generator unit (the lateral dead space can be made as small as possible)
At the same time, the generator unit
When the recoil starter 6 is surrounded by the fan cover 24, the dead space inevitably formed above the recoil starter 6, which has a smaller outer diameter than the fan cover 24, can be effectively utilized.

In addition, the muffler 25, which is a heat generating member,
are placed closer to the generator than the engine body 1, while the air cleaner 8, the carburetor 7, and the bent portion 13b of the intake pipe 13, which are intake system members, are placed on the opposite side of the muffler 25, with the engine body 1 in between, and on the side opposite to the muffler 25. Recoil starter 6 divided by fan cover 24
Since these intake system members and heat generating members (muffler 2
5 and the engine body 1), and the fan cover 24, which is in a cold state, can function as a heat shielding member against radiant heat from the heat generating member. As a result, despite the configuration in which the intake system members are arranged together with heat generating members such as the engine body 1 and the muffler 25 within the narrow work equipment cover 17, it is possible to suppress the temperature rise of the intake system members as much as possible. It becomes possible.

(Effects of the Invention) According to the internal combustion engine-driven power generation device of the present invention, the muffler, intake pipe, carburetor, and air cleaner arranged in the work equipment cover surrounding the outside of the work equipment unit are connected to each other within the work equipment cover. Since the work equipment cover is arranged using dead space, the work equipment cover can be made as small as possible and the equipment can be made smaller and lighter. When arranging the air cleaner, the muffler and engine body, which are heat-generating components, and the intake pipe, carburetor, and air cleaner, which are intake system components, should be kept as far away as possible, and a cool fan cover with a heat shielding effect should be interposed between them. As a result, the temperature rise of the intake system components due to the radiant heat of the heat generating components is suppressed as much as possible, and the engine's output performance is maintained at a good level, even though it is placed inside the narrow work equipment cover. This effect can also be obtained.

[Brief explanation of drawings]

FIG. 1 is a side view of an internal combustion engine-driven power generator according to an embodiment of the present invention, and FIG. 2 is a view taken along the - arrow in FIG. 1... Engine body, 2... Output shaft, 3... Work equipment, 4... Cooling fan, 6... Starting device, 7...
Carburetor, 8... Air cleaner, 9... Fuel tank, 10... Handle, 11... Side of engine body, 12... Intake port, 13... Intake pipe, 14
...Corner space, 16...Exhaust port, 17...
Work equipment cover, 24...Fan cover, 25...
Scarf.

Claims (1)

[Claims] 1 A generator unit Regarding the engine body 1 inside the cover when the generally rectangular horizontal cross section of the work equipment cover 17 is viewed from above in a portable internal combustion engine driven power generation device Z whose outer periphery is surrounded by a work equipment cover 17 and equipped with a handle 10. A muffler 25 is disposed at one corner on the generator 3 side, and an intake port 12 of the engine body 1 is disposed at one corner on the starter 6 side and further axially outward from the fan cover 24. Intake pipe 13 communicating with
A bent part of the intake pipe 13 is arranged at the other corner part.
An air cleaner 8 is provided which communicates with the fan cover 24 via the carburetor 7.
An internal combustion engine-driven power generating apparatus characterized in that the carburetor 7 is disposed in a corner space 14 located outside of the starting device 6 and above the starting device 6.