JPH025655Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a soundproof power generation device in which an air-cooled engine and a generator connected to and driven by the output shaft of the air-cooled engine are installed in a soundproof case. First, let's talk about conventional soundproof power generation equipment.
This will be explained with a diagram.

A generator 5 is installed in a soundproof case 1 that has an air inlet 3 and an air outlet 4 opened in opposing side walls 2, respectively.
and an air-cooled engine 6 that drives the generator 5 are sequentially arranged from the air inlet 3 side to the air outlet 4 side, and the crankshaft 7 of the air-cooled engine 6 has an air outlet 4 side at the end 7a on the side opposite to the generator. A recoil starter 8 exposed outside the soundproof case 1 is disposed at the generator side end 7b, and a fan 9 covered with a baffle plate 11 for guiding cooling air toward the cylinder head 10 of the air-cooled engine 6 is disposed at the generator side end 7b. Further, the crankshaft 7 and the rotating shaft 13 of the generator 5 are positioned on the same axis, and the rotating shaft 1 is attached to the end 7b of the crankshaft 7.
3, and the cooling air W is passed through the air guide plate 11 from the air inlet 3 to the air outlet 4 by the fan 9.
1 is made to circulate and is discharged from the air outlet 4 as W2. Reference numeral 14 denotes an air intake port of the generator 5, which allows air sucked in from the air inlet 3 to flow into the generator 5. 18 indicates a fuel tank.

In the conventional soundproof power generation device described above, at the initial stage of operation of the generator 8 and the air-cooled engine 6 that drives the generator 5, the generator 5 and the air-cooled engine 6 are cooled by the flow of the cooling air W1. However, the temperature inside the soundproof case 1 gradually rises due to the heat radiated from the outer surface of the engine that is not used as a passage for the cooling air W1, and the temperature of the air inside the soundproof case 1 that has risen in temperature in this way increases. A part of A is exhausted along with the exhaust air W2, but most of it accumulates at the top of the soundproof case and is sucked in from the cooling air intake port 12 of the air-cooled engine 6, and conversely,
The air-cooled engine 6 is heated, and the cooling of the air-cooled engine 6 deteriorates, resulting in an overheating state and eventually becoming inoperable.

Therefore, as a countermeasure to this problem, a fan is installed at the top of the soundproof case 1 to exhaust (suck out) the high temperature air at the top of the soundproof case 1, and this fan forces the high temperature air. Although measures such as discharging the air to the outside of the soundproof case 1 are taken, the fan must be installed in a pool of high-temperature air inside the soundproof case 1, and it may not be possible to secure the desired location structurally. It is necessary to forcibly exhaust high-temperature air and to cool the engine by passing the cooling air W1 through the heat dissipation section on the outer surface of the air-cooled engine, but depending on the installation position of the fan, the cooling air W1 from the air inlet 3 may be directly Since there is a risk that the cooling air W1 will be forced out without exhausting high-temperature air, it will be necessary to secure a cooling air passage with a partition plate, etc., which will complicate the structure, and furthermore, There were problems such as the need for separate power to drive the motor.

The present invention has been made to improve the above-mentioned problems and maintain effective cooling within the soundproof case. Cover with wind board,
An air-cooled engine is configured to cool the cylinder by guiding the cooling air sucked in by a cooling fan to the cylinder using a baffle plate, and a generator is connected to the crankshaft and driven on the cooling fan side of the air-cooled engine. In a soundproof power generation device installed in a soundproof case having an air inlet in the generator side side wall and an air outlet in the air cooled engine side side wall of the opposing side walls, the rotating shaft of the generator is opposite to the air cooled engine side. To provide a soundproof type power generation device, characterized in that a press-fit fan connected to an end of the soundproof case and driven to force-feed external air of the soundproof case into the inside of the case as cooling air is installed at an air inlet part of the soundproof case. It is.

Next, the soundproof power generation device of the present invention will be explained with reference to FIG.

31 is a soundproof case, 32 is an air-cooled engine, 33
is a generator, and 34 is a fuel tank. A soundproof case 31 is loaded on the caster 39, a vibration-proof rubber 40 is fixed to the sound-proof case 31, and an air-cooled engine 32 and a generator 33 are mounted via the vibration-proof rubber 40. The crankshaft, which is the output shaft of the air-cooled engine 32, and the rotating shaft of the generator 33 are arranged on the same axis, and by connecting both shafts, the air-cooled engine 32 can drive the generator 33. There is. A universal joint 41 is attached to the shaft end of the rotating shaft of the generator 33 on the side opposite to the air-cooled engine,
Soundproof case 31 of the same universal joint 41
A press-fit fan 44 rotatably supported by a bearing 43 is connected to an air inlet 60 provided on the side wall of the generator. 45 is a recoil starter, and 46 is an exhaust duct. 42 is a cooling fan fixed to the generator side shaft end of the crankshaft of the air-cooled engine 32; 50 is a baffle plate that guides the cooling air forcedly sent by the cooling fan 42 to the cylinder and cylinder head of the air-cooled engine 32; 4
2 and is formed to cover the outside of the connection portion with the generator 33. Reference numeral 48 indicates a cooling air intake for the air-cooled engine, which is opened at the connecting portion of the baffle plate 50 with the generator, 49 indicates a cooling air intake for the generator, which is provided on the opposite side of the generator 33 to the air-cooled engine, and 51 indicates a soundproofing air intake. Exhaust duct 46 on the side wall of the case 31 on the air-cooled engine side
An air outlet formed as an extension, 52 is a cooling air intake provided on the bottom surface of the air-cooled engine installation side of the soundproof case 31, 53 is a cooling air intake provided through the cooling air intake 52, etc., and is heated within the soundproof case 31 to reduce the temperature. This is an exhaust port for discharging the air that has risen and moved upward by natural convection to the outside, and is opened in the upper part of the side wall of the soundproof case 31 on the air-cooled engine side.

Next, the operation of the soundproof power generator having the above structure will be explained.

When the air-cooled engine 32 is started and the air-cooled engine 32 rotates, the cooling fan 42 rotates, and at the same time, the press-fit fan 44 is also rotated via the universal joint 41 attached to the generator 33 and the shaft end of its rotating shaft.

The air-cooled engine 32 and the generator 33 are cooled by a cooling fan 42, and external air introduced and pressure-fed from the air inlet part 60 by the press-in fan 44 is sucked in from the cooling air intake 49 of the generator 33 as shown by W1. While the generator 33 is cooled, the air-cooled engine 32 is mainly cooled by sucking air from the press-in fan 44 as shown by W1 from the cooling air intake 48 and passing through the generator 33. The air passes through the baffle plate 50 together with the wind and cools the air-cooled engine 32.

Furthermore, the cooling air W1 that is forced in from the outside by the press-in fan 44 is forced into the cooling air intakes 49 and 48, thereby further improving the cooling effect. On the other hand, a part of the cooling air W1 that is force-fed by the press-fitting fan 44 is not sucked into the cooling air intakes 49 and 48, and is directly transferred to the generator 33 and the air-cooled engine 3.
passing through the outer surfaces of generator 3 to cool them;
3. Together with the cooling air that has passed through the air-cooled engine 32, the hot air is discharged from the air outlet 51 as shown by W2. Note that after the engine is stopped, the natural convection cooling air intake 52
Cooling air flows in from the outlet 53 as shown by W3.
more excreted.

According to the soundproof power generation device of the present invention described above,
A press-fit fan is installed at the external air inlet of the soundproof case, and the air-cooled engine and generator are cooled by the cooling air pumped by the fan. Since the air inside the soundproof case is replaced, it is easy to replace the air inside the soundproof case, and there is no need to secure an air flow path, so the structure is simple and inexpensive. Since it is directly connected (universal joint) and driven, no separate power is required.

(3) To constantly introduce cooling air into the soundproof case,
The temperature inside the soundproof case is exhausted and the cooling effect is high.

The following effects were obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the overall arrangement of a conventional soundproof power generator, and FIG. 2 is a side view showing the overall arrangement of the soundproof power generator of the present invention. 31...Soundproof case, 32...Air-cooled engine,
33... Generator, 41... Universal joint, 42... Cooling fan, 43... Bearing, 44...
...Press-fitting fan, 51...Air outlet, 60...Air inlet section.

Claims (1)

[Scope of utility model registration request] The outside of the cooling fan fixed to one end of the crankshaft is covered with a baffle plate having a cooling air intake, and the baffle plate guides the cooling air sucked in by the cooling fan to the cylinder part to cool the cylinder part. Soundproofing with an air inlet on the generator side wall and an air outlet on the air cooled engine side wall of the side wall that faces the air-cooled engine and the generator connected to the crankshaft and driven on the cooling fan side of the air-cooled engine. In a soundproof power generation device installed in a case, a press-fit device is connected to and driven by the shaft end of the rotating shaft of the generator on the side opposite to the air-cooled engine, and forces air outside the soundproof case into the case as cooling air. A soundproof power generation device characterized in that a fan is installed at an air inlet of the soundproof case.