Air-cooled generator set

Abstract

The present invention relates to an air-cooled generator set, which comprises a frame, a generator and an engine. The frame is provided with a front chamber for accommodating the engine and a rear chamber for accommodating the generator; the front chamber is provided with an air collecting hood A connected to the outside, and the air collecting hood A is arranged at the air inlet of the engine fan; the air outlet of the engine fan is provided with an air cooling channel A for cooling the engine cylinder head and cylinder liner and an air cooling channel B for cooling the cooler; the air outlets of the air cooling channel A and the air cooling channel B are connected to the outside. The purpose of the present invention is to provide an air-cooled generator set with low noise and good cooling effect. The advantages of the present invention are: the present invention sets two independent chambers to separate the generator and the engine, cools the main heat generating structure of the engine through the air cooling channel A and the air cooling channel B, and sets the muffler at the air outlet of the air cooling channel A and the air cooling channel B, which reduces noise while achieving the effect of cooling the muffler.

Description

Technical Field

[0001] The invention relates to a generator set. Background Art

[0002] Generator sets are widely used as civil and industrial power sources to meet the power needs of many occasions such as homes, schools, hospitals, construction sites, etc. At present, most generator sets on the market are open-frame type, and their engines are directly exposed to the outside, so they are noisy; although the use of soundproof boxes to enclose the engine and generator can effectively reduce noise, the number of air inlets and outlets is greatly reduced, and the heat radiation generated by the operation of the engine and generator will cause the heat in the soundproof box to accumulate continuously, resulting in poor cooling effect of the engine and generator, thereby affecting the output power and reliability of the generator set. Summary of the invention

[0003] The object of the present invention is to provide an air-cooled generator set with low noise and good cooling effect.

[0004] The objective of the present invention is achieved through the following technical scheme: an air-cooled generator set, which includes a frame, a generator and an engine, the frame is provided with a front chamber for accommodating the engine and a rear chamber for accommodating the generator; the front chamber is provided with an air collecting hood A connected to the outside, the air collecting hood A is arranged at the air inlet of the engine fan; the air outlet of the engine fan is provided with an air cooling channel A for cooling the engine cylinder head and cylinder liner and an air cooling channel B for cooling the cooler; the air outlets of the air cooling channel A and the air cooling channel B are connected to the outside.

[0005] Compared with the prior art, the advantages of the present invention are:

[0006] 1. The present invention sets two independent chambers to separate the generator and the engine, cools the main heat-generating structure of the engine through the air cooling channel A and the air cooling channel B, and sets the muffler at the air outlet of the air cooling channel A and the air cooling channel B, thereby reducing noise and achieving the effect of cooling the muffler.

[0007] 2. The generator uses its rear fan to introduce cooling air, which not only cools the generator itself, but also guides the cooling air to the front chamber to assist in cooling other areas of the engine, so as to achieve an excellent cooling cycle and make its output power comparable to that of an open-frame generator set.

[0008] 3. The frame is provided with a front cover and a rear cover. By flipping the front and rear covers, the outer cover can be quickly opened to facilitate maintenance inside the generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of an embodiment of an air-cooled generator set of the present invention (expanded state).

[0010] Figure 2 It is a structural schematic diagram of an embodiment of an air-cooled generator set of the present invention (folded state).

[0011] Figure 3 It is a schematic diagram of the structure of an air-cooled generator set with the front cover and the rear cover removed.

[0012] Figure 4 It is a schematic diagram of the cooling channel of the engine in the air-cooled generator set.

[0013] Figure 5 It is a cross-sectional view of air cooling channel B.

[0014] Figure 6 It is a schematic diagram of the cooling channel of the generator in the air-cooled generator set.

[0015] Figure 7 It is a cross-sectional view of an air-cooled generator set.

[0016] Explanation of reference numbers: 1 frame, 1-1 front chamber, 1-2 rear chamber, 1-3 base, 1-4 front flap, 1-5 rear flap, 1-6 vertical partition, 1-7 exhaust outlet A, 1-8 exhaust outlet B, 1-9 series flow channel, 2 generator, 3 engine, 3-1 engine fan, 3-2 engine cylinder head, 3-3 oil cooler, 4 air collecting hood A, 5 air cooling channel A, 5-1 auxiliary air outlet, 6 air cooling channel B, 7 cooling hood, 8 muffler hood, 9 air guide vortex casing, 10 air filter, 11 air collecting hood B, 12 air intake hood, 13 fuel tank, 14 control panel. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0018] like Figures 1 to 7 Shown is a schematic diagram of an embodiment of an air-cooled generator set provided by the present invention.

[0019] An air-cooled generator set comprises a frame 1, a generator 2 and an engine 3, wherein the frame 1 is provided with a front chamber 1-1 for accommodating the engine 3 and a rear chamber 1-2 for accommodating the generator 2;

[0020] An air collecting hood A4 connected to the outside is provided in the front chamber 1-1, and the air collecting hood A4 is arranged at the air inlet of the engine fan 3-1; an air cooling channel A5 for cooling the engine cylinder head 3-2 and the cylinder liner and an air cooling channel B6 for cooling the oil cooler 3-3 are provided at the air outlet of the engine fan 3-1; the air outlets of the air cooling channel A5 and the air cooling channel B6 are connected to the outside.

[0021] The engine cylinder head 3-2 and the outer periphery of the cylinder liner are provided with a cooling cover 7, and the cooling cover 7 is connected to the air cooling channel A5; the oil cooler 3-3 is arranged inside the channel of the air cooling channel B6.

[0022] The air cooling channel A5 extends along the left side of the engine 3 and is connected to the left side of the cooling cover 7, and the air outlet of the cooling cover 7 is located on the right side; the air cooling channel B6 extends along the right side of the engine 3 and converges with the air outlet of the cooling cover 7.

[0023] The air-cooled generator set also includes a muffler and a muffler cover 8 arranged on the outer peripheral side of the muffler; the air outlets of the air-cooling channel A5 and the air-cooling channel B6 are respectively connected to the air inlet of the muffler cover 8, and the air outlet of the muffler cover 8 is connected to the outside.

[0024] The muffler and the muffler cover 8 are arranged in the rear chamber 1-2, and the side wall of the rear chamber 1-2 is provided with an exhaust outlet B1-8 connected with the muffler cover 8. A labyrinth structure is also provided at the exhaust outlet B1-8.

[0025] An air intake hood 12 connected to the air collecting hood A4 is provided at the front side of the frame 1. The air intake port of the air intake hood 12 faces downward, and a labyrinth structure is provided inside the air intake hood 12.

[0026] The outer periphery of the engine fan 3 - 1 is provided with an air guide vortex casing 9 , the front side of the air guide vortex casing 9 is an air inlet, the rear side of the air guide vortex casing 9 is provided with a sealing plate, and the air cooling channel A5 and the air cooling channel B6 are connected to the peripheral side of the air guide vortex casing 9 .

[0027] An air filter 10 is also provided in the front chamber 1 - 1 , and the air filter 10 is connected between the air collecting hood A4 and the air inlet of the engine combustion chamber.

[0028] The air cooling channel A5 and / or the air cooling channel B6 are provided with auxiliary air outlets 5 - 1 , and the auxiliary air outlets 5 - 1 correspond to the heating area on the lower side of the engine cylinder head 3 - 2 .

[0029] A series flow channel 1-9 is provided between the front chamber 1-1 and the rear chamber 1-2. The front end of the generator 2 is located at the air inlet of the series flow channel 1-9. An air collecting hood B11 connected to the outside is provided at the air inlet of the generator fan on the rear side. The air outlet of the series flow channel 1-9 corresponds to the lower part of the engine 3. An exhaust outlet A1-7 connected to the outside is opened on the front chamber 1-1.

[0030] The air inlet of the air collecting hood B11 is located at the rear side of the rear chamber 1 - 2 , and a labyrinth structure is provided on the air inlet passage of the air collecting hood B11 .

[0031] The side wall of the rear chamber 1-2 is also provided with an exhaust hole, which is used to discharge a part of the cooling air sucked into the rear chamber 1-2 by the air collecting hood B11.

[0032] The front outer contour of the generator 2 matches the air inlet of the series flow channel 1-9.

[0033] The frame 1 includes a base 1-3, a front flap 1-4 hinged on the front side of the base 1-3, and a rear flap 1-5 hinged on the rear side of the base 1-3; a vertical partition 1-6 is provided in the middle of the base 1-3; a front chamber 1-1 is formed between the front flap 1-4 and the vertical partition 1-6, and a rear chamber 1-2 is formed between the rear flap 1-5 and the vertical partition 1-6.

[0034] The working principle of the air-cooled generator set is as follows:

[0035] When the engine 3 is started, the engine fan 3-1 rotates at high speed, sucking the outside air from the air inlet of the air intake cover 12 into the air collecting cover A4. The air in the air collecting cover A4 is divided into two parts. One part is sucked by the engine fan 3-1 and enters the air cooling channel A5 and the air cooling channel B6 respectively, and the other part first passes through the air filter 10 and then enters the engine combustion chamber (see Figure 4 );

[0036] Most of the cooling air in the air cooling channel A5 is used to cool the engine cylinder head 3-2 and the cylinder liner, and is collected by the cooling cover 7. A small part of the cooling air is discharged from the auxiliary air outlet 5-1 on the side wall of the air cooling channel A5 to cool the engine body under the cylinder head 3-2 (see Figure 6 );

[0037] The cooling air in the air cooling channel B6 directly passes through the oil cooler 3-3, takes away the heat generated by the oil cooler 3-3, and then converges with the cooling air discharged from the outlet of the cooling cover 7 and enters the muffler cover 8 to cool the muffler, and is finally sent out from the exhaust outlet B1-8 on the side wall of the rear chamber 1-2.

[0038] At the same time, the generator 2 is running, and the generator fan rotates at a high speed, sucking the outside air into the air collecting cover B11 and blowing it along the direction of the generator 2 to take away the heat generated by the generator 2 (see Figure 6-7 );

[0039] Since the airflow after cooling the generator 2 does not rise in temperature, it can continue to be used to cool the engine 3, that is, the cooling air from the front end of the generator 2 enters the front chamber 1-1 through the series flow channel 1-9, and the air outlet of the series flow channel 1-9 corresponds to the lower area of ​​the engine 3 to cool the engine oil pan;

[0040] Finally, the cooling air is sent out from the exhaust outlet A1-7 on the side wall of the front chamber 1-1 to reduce the temperature inside the entire front chamber 1-1.

Claims

1. An air-cooled generator set, comprising a frame (1), a generator (2) and an engine (3), characterized in that: The frame (1) is provided with a front chamber (1-1) for accommodating the engine (3) and a rear chamber (1-2) for accommodating the generator (2); An air collecting hood A (4) communicating with the outside is provided in the front chamber (1-1), and the air collecting hood A (4) is provided at the air inlet of the engine fan (3-1); an air cooling channel A (5) for cooling the engine cylinder head (3-2) and the cylinder liner, and an air cooling channel B (6) for cooling the engine oil cooler (3-3) are provided at the air outlet of the engine fan (3-1); the air outlets of the air cooling channel A (5) and the air cooling channel B (6) are communicated with the outside; A cooling cover (7) is provided on the outer periphery of the engine cylinder head (3-2) and the cylinder liner, and the cooling cover (7) is connected to the air cooling channel A (5); the oil cooler (3-3) is arranged inside the air cooling channel B (6); It also includes a muffler and a muffler cover (8) arranged on the outer peripheral side of the muffler; the air outlets of the air cooling channel A (5) and the air cooling channel B (6) are respectively connected to the air inlet of the muffler cover (8), and the air outlet of the muffler cover (8) is connected to the outside; An air guide volute (9) is provided on the outer periphery of the engine fan (3-1), the front side of the air guide volute (9) is an air inlet, a sealing plate is provided on the rear side of the air guide volute (9), and the air cooling channel A (5) and the air cooling channel B (6) are connected to the circumference of the air guide volute (9); An air filter (10) is also provided in the front chamber (1-1), and the air filter (10) is connected between the air collecting cover A (4) and the air inlet of the engine combustion chamber; A series flow channel (1-9) is provided between the front chamber (1-1) and the rear chamber (1-2); the front end of the generator (2) is located at the air inlet of the series flow channel (1-9); an air collecting hood B (11) communicating with the outside is provided at the air inlet of the generator fan at the rear side; the air outlet of the series flow channel (1-9) corresponds to the lower part of the engine (3); and an exhaust outlet A (1-7) communicating with the outside is provided on the front chamber (1-1).

2. The air-cooled generator set according to claim 1, characterized in that: The muffler and the muffler cover (8) are arranged in the rear chamber (1-2), and the side wall of the rear chamber (1-2) is provided with an exhaust outlet B (1-8) connected to the muffler cover (8).

3. The air-cooled generator set according to claim 1, characterized in that: The air cooling channel A (5) and / or the air cooling channel B (6) are provided with an auxiliary air outlet (5-1), and the auxiliary air outlet (5-1) corresponds to the heating area on the lower side of the engine cylinder head (3-2).

4. The air-cooled generator set according to claim 1, characterized in that: The front end outer contour of the generator (2) fits with the air inlet of the series flow channel (1-9).

5. The air-cooled generator set according to claim 1, characterized in that: The frame (1) comprises a base (1-3), a front flap (1-4) hinged to the front side of the base (1-3), and a rear flap (1-5) hinged to the rear side of the base (1-3); a vertical partition (1-6) is provided in the middle of the base (1-3); a front chamber (1-1) is formed between the front flap (1-4) and the vertical partition (1-6), and a rear chamber (1-2) is formed between the rear flap (1-5) and the vertical partition (1-6).

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