A boost system for air-cooled generator sets

Abstract

The present invention discloses a supercharging system for an air-cooled generator set, comprising an air filter, a carburetor, a cylinder head assembly, and a turbocharger. The air filter and the air inlet of the turbocharger are connected, the carburetor and the air outlet of the turbocharger are connected, the exhaust passage of the cylinder head assembly is connected to the exhaust gas inlet of the turbocharger, and the exhaust gas is discharged through the exhaust gas outlet of the turbocharger. The present invention has the following advantages and effects: by setting a turbocharger, the air filter and the air inlet of the turbocharger are connected, the carburetor and the air outlet of the turbocharger are connected, the exhaust passage of the cylinder head assembly is connected to the exhaust gas inlet of the turbocharger, and the exhaust gas is discharged through the exhaust gas outlet of the turbocharger. At this time, the turbocharger is driven to rotate during the exhaust gas discharge process, so that the turbocharger increases the intake amount entering the carburetor, and finally improves the combustion completeness of gasoline.

Description

Technical Field

[0001] The invention relates to the field of generators, and in particular to a boosting system for an air-cooled generator set. Background Art

[0002] Air-cooled generator sets (also called air-cooled gasoline wind turbine sets) refer to mechanical equipment that converts other forms of energy into electrical energy. It is driven by a gasoline engine as a power machine, converting the energy generated by gasoline into mechanical energy and transmitting it to the generator, which then converts it into electrical energy. Gasoline generators are generally light in weight, simple in structure and easy to move. They are air-cooled and are generally used for household power generation and small construction sites.

[0003] For example, a Chinese patent with authorization announcement number 201125764Y and authorization announcement date October 1, 2008 discloses a small general-purpose gasoline engine, wherein a cylinder head assembly has an intake passage and an exhaust passage, wherein the structure at the intake is that an air filter is connected to a carburetor, and the carburetor is connected to the intake passage of the cylinder head assembly.

[0004] During the use of the gasoline engine, there is often a phenomenon of incomplete combustion of gasoline due to insufficient oxygen in the intake air, which affects the performance of the gasoline engine. Summary of the invention

[0005] The purpose of the present invention is to provide a supercharging system for an air-cooled generator set, which increases the intake volume and ultimately improves the combustion completeness of gasoline by arranging a supercharger between an air filter, a carburetor and an exhaust passage of a cylinder head assembly.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a supercharging system of an air-cooled generator set, comprising an air filter, a carburetor and a cylinder head assembly, a turbocharger being connected between the air filter, the carburetor and the cylinder head assembly, the air inlet of the air filter and the turbocharger being communicated, the air outlet of the carburetor and the turbocharger being communicated, the exhaust passage of the cylinder head assembly being communicated with the exhaust gas inlet of the turbocharger, and the exhaust gas being discharged through the exhaust gas outlet of the turbocharger.

[0007] By adopting the above scheme, a turbocharger is connected between the air filter, carburetor and cylinder head assembly of the gasoline engine component of the gasoline generator set, so that the air filter and the air inlet of the turbocharger are connected, the carburetor and the air outlet of the turbocharger are connected, the exhaust channel of the cylinder head assembly is connected with the exhaust gas inlet of the turbocharger, and the exhaust gas is discharged through the exhaust gas outlet of the turbocharger. At this time, the turbocharger is driven to rotate during the exhaust gas discharge process, so that the turbocharger increases the intake amount entering the carburetor, and finally improves the combustion completeness of the gasoline.

[0008] The present invention is further configured as follows: the turbocharger includes a volute having an exhaust gas inlet and an exhaust gas outlet, a compressor shell arranged on the volute and having an air inlet and an air outlet, a heat insulation structure arranged between the volute and the compressor shell, a rotating shaft rotatably connected between the volute and the compressor shell and passing through the heat insulation structure, an exhaust turbine arranged on the rotating shaft and located in the volute, and an intake turbine arranged on the rotating shaft and located in the compressor shell.

[0009] By adopting the above scheme, the exhaust turbine is driven to rotate during the exhaust gas discharge process, the exhaust turbine drives the rotating shaft and the intake turbine to rotate, and the intake turbine turbocharges the air entering the carburetor, thereby increasing the intake volume; at the same time, due to the high temperature of the exhaust gas, the setting of the heat insulation structure has a heat insulation effect to prevent the temperature of the air entering the carburetor from becoming too high, and it also has the function of isolating air and exhaust gas.

[0010] The present invention is further configured as follows: a spacer sleeve is provided on the rotating shaft, and its upper and lower ends respectively abut against the exhaust turbine and the intake turbine, and its cross section is in the shape of an inverted "convex" character; an annular limit block is provided on the rotating shaft for the upper end of the intake turbine to abut against, and a vortex end nut for abutting against the exhaust turbine is threadedly connected to the lower end of the rotating shaft for tightening against the exhaust turbine; the heat insulation structure comprises a heat insulation cover which is sleeved on the circumference of the smaller radius end of the spacer sleeve and is placed on the stepped surface of the inner wall of the volute after the edge is installed downward, a heat insulation sleeve which is sleeved on the rotating shaft and is placed on the edge of the upper surface of the heat insulation cover after the edge is installed downward, and a back plate which is sleeved on the circumference of the larger radius end of the spacer sleeve and is placed in the heat insulation sleeve after the edge is installed downward, the inner ring of the heat insulation cover is close to the spacer sleeve, the inner ring of the back plate is close to the spacer sleeve and abuts against the outer wall of the heat insulation cover close to the spacer sleeve, and the circumference of the upper end of the heat insulation sleeve of the compression shell is embedded and pressed against the upper surface edge of the back plate after installation, and an annular cavity for heat insulation is formed between the heat insulation cover, the heat insulation sleeve and the back plate.

[0011] By adopting the above scheme, the setting of the spacer can separate the exhaust turbine and the intake turbine. The heat insulation cover, the heat insulation sleeve and the back plate of the heat insulation structure can be pressed between the vortex casing and the compression casing after installation, and the inner circle of the heat insulation cover is close to the spacer, and the inner circle of the back plate is close to the spacer; thereby, the connection between the vortex casing and the compression casing is separated to achieve heat insulation; at the same time, an annular cavity is formed between the heat insulation cover, the heat insulation sleeve and the back plate, which can further improve the heat insulation effect.

[0012] The present invention is further configured as follows: a plurality of first through holes distributed in a circumferential array are provided on the heat insulation cover, a plurality of second through holes distributed in a circumferential array are provided on the back plate, an annular rubber bladder is provided in the annular cavity, a plurality of first protrusions embedded in the first through holes are provided on the lower surface of the annular rubber bladder, a plurality of second protrusions embedded in the second through holes are provided on the upper surface of the annular rubber bladder, and the annular rubber bladder is pressed between the heat insulation sleeve and the back plate.

[0013] By adopting the above scheme, an annular rubber bladder is arranged in the annular cavity formed between the heat insulation cover, the heat insulation sleeve and the back plate, so as to further improve the heat insulation effect; and a plurality of first protrusions embedded in the first through holes are arranged on the lower surface of the annular rubber bladder, and a plurality of second protrusions embedded in the second through holes are arranged on the upper surface of the annular rubber bladder, so as to limit the heat insulation cover and the back plate; at the same time, the annular rubber bladder is pressed between the heat insulation sleeve and the back plate, and if there is a gap when the compression shell presses the back plate, the gap can be eliminated by the deformation of the annular rubber bladder.

[0014] The present invention is further configured as follows: a bearing seat body is sleeved on the upper end of the rotating shaft, two deep groove ball bearings are arranged between the bearing seat body and the rotating shaft, a bearing spacer located between the two deep groove ball bearings is arranged on the rotating shaft, a pressure end nut which is tightly pressed against the inner ring of the deep groove ball bearing above is threadedly connected to the upper end of the rotating shaft, and a bearing seat cover covering the upper end of the rotating shaft is arranged above the bearing seat body; the air inlet of the compression shell is arranged at the top and the bearing seat cover is embedded in it, and a plurality of protrusions distributed in a circumferential array and abutting against the inner wall of the air inlet of the compression shell are arranged on the circumferential side of the bearing seat body, a first hexagon socket screw is passed between the bearing seat cover and the protrusion, and the compression shell and the protrusion are fixed by a second hexagon socket screw, and air enters along the inner wall of the air inlet of the compression shell and the space on the circumferential side of the bearing seat body.

[0015] By adopting the above scheme, the bearing seat body and the bearing seat cover at the upper end of the rotating shaft can pass through the air inlet of the compression shell, so that the compression shell can be installed from top to bottom, and then fixed by multiple first hexagon socket screws, which is convenient for assembly; at the same time, when air enters from the air inlet of the compression shell, the deep groove ball bearing, the bearing seat body and the bearing seat cover can also be cooled by air.

[0016] The present invention is further configured to include a cooling structure for cooling the peripheral side of the cylinder head assembly, the cooling structure including an air guide hood arranged on the peripheral side of the cylinder head assembly with an air outlet facing the turbocharger, a fan cover arranged at the air inlet of the air guide hood, and a cooling fan arranged in the fan cover and blowing air into the air guide hood.

[0017] By adopting the above scheme, when the cooling structure is in use, the cooling fan in the fan cover blows air into the air guide cover, thereby achieving air cooling of the peripheral side of the cylinder head assembly. At the same time, the outlet of the air guide cover faces the turbocharger. Although the temperature of the air blown out from the air guide cover will increase, air cooling of the turbocharger can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of Example 1;

[0019] Figure 2 is a schematic structural diagram of a turbocharger in Example 1;

[0020] Figure 3 yes Figure 2 The cross-sectional view at AA in FIG.

[0021] Figure 4 is a structural exploded diagram of the turbocharger in Example 1;

[0022] Figure 5 is a simple schematic diagram of the cooling structure in Example 2;

[0023] Figure 6 It is a cross-sectional view of the supercharger in Example 3.

[0024] Reference numerals: 1, air filter; 2, carburetor; 3, cylinder head assembly; 4, turbocharger; 401, volute; 402, compression shell; 403, heat insulation structure; 4031, heat insulation cover; 40311, first through hole; 4032, heat insulation sleeve; 4033, back plate; 40331, second through hole; 4034, annular cavity; 404, rotating shaft; 4041, annular stop block; 405, exhaust turbine; 406, intake turbine; 40 7. Spacer; 408. Turbine end nut; 409. Annular rubber bladder; 4091. First protrusion; 4092. Second protrusion; 4010. Bearing seat body; 40101. Bump; 4011. Deep groove ball bearing; 4012. Bearing spacer; 4013. Pressure end nut; 4014. Bearing seat cover; 4015. First hexagon socket screw; 4016. Second hexagon socket screw; 51. Wind guide cover; 52. Fan cover; 53. Cooling fan. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] Embodiment 1: An air intake boosting system of a gasoline engine group includes an air filter 1, a carburetor 2 and a cylinder head assembly 3, wherein a turbocharger 4 is connected between the air filter 1, the carburetor 2 and the cylinder head assembly 3, the air inlet of the air filter 1 and the turbocharger 4 are connected, the air outlet of the carburetor 2 and the turbocharger 4 are connected, the exhaust passage of the cylinder head assembly 3 is connected to the exhaust gas inlet of the turbocharger 4, and the exhaust gas is discharged through the exhaust gas outlet of the turbocharger 4.

[0027] like Figures 1 to 3As shown, the turbocharger 4 includes a volute 401 having an exhaust gas inlet and an exhaust gas outlet, a compression shell 402 arranged on the volute 401 and having an air inlet and an air outlet, a heat insulation structure 403 arranged between the volute 401 and the compression shell 402, a rotating shaft 404 rotatably connected between the volute 401 and the compression shell 402 and passing through the heat insulation structure 403, an exhaust turbine 405 arranged on the rotating shaft 404 and located in the volute 401, and an intake turbine 406 arranged on the rotating shaft 404 and located in the compression shell 402.

[0028] like Figure 3 As shown, the rotating shaft 404 is provided with a spacer sleeve 407 whose upper and lower ends respectively abut against the exhaust turbine 405 and the intake turbine 406 and whose cross section is in the shape of an inverted "convex" character. The rotating shaft 404 is provided with an annular limit block 4041 for abutting against the upper end of the intake turbine 406. The lower end of the rotating shaft 404 is threadedly connected with a turbine end nut 408 for tightening on the exhaust turbine 405.

[0029] like Figure 3 and Figure 4 As shown, the heat insulation structure 403 includes a heat insulation cover 4031 which is sleeved on the circumferential side of the smaller radius end of the spacer sleeve 407 and is installed with its edge downward and rests on the stepped surface of the inner wall of the volute 401, a heat insulation sleeve 4032 which is sleeved on the rotating shaft 404 and is installed with its edge downward and abuts against the edge of the upper surface of the heat insulation cover 4031, and a back plate 4033 which is sleeved on the circumferential side of the larger radius end of the spacer sleeve 407 and is installed with its edge downward and its edge rests inside the heat insulation sleeve 4032. The inner circle of the heat insulation cover 4031 is close to the spacer sleeve 407, and the inner circle of the back plate 4033 is close to the spacer sleeve 407 and abuts against the outer wall of the heat insulation cover 4031 close to the spacer sleeve 407. After installation, the compression shell 402 is embedded and pressed against the upper surface edge of the back plate 4033 for the circumferential side of the upper end of the heat insulation sleeve 4032, and an annular cavity 4034 for heat insulation is formed between the heat insulation cover 4031, the heat insulation sleeve 4032 and the back plate 4033.

[0030] like Figure 3 and Figure 4As shown, a bearing seat body 4010 is sleeved on the upper end of the rotating shaft 404, two deep groove ball bearings 4011 are arranged between the bearing seat body 4010 and the rotating shaft 404, a bearing spacer 4012 is arranged on the rotating shaft 404 and located between the two deep groove ball bearings 4011, and a pressure end nut 4013 is threadedly connected to the upper end of the rotating shaft 404 and pressed against the inner ring of the deep groove ball bearing 4011 above, and a bearing seat cover 4014 covering the upper end of the rotating shaft 404 is arranged above the bearing seat body 4010. The air inlet of the compression shell 402 is arranged at the top and is embedded in the bearing seat cover 4014. A plurality of protrusions 40101 distributed in a circular array and abutting against the inner wall of the air inlet of the compression shell 402 are arranged on the circumferential side of the bearing seat body 4010. The bearing seat cover 4014 and the protrusion 40101 are fixed by a first hexagon socket screw 4015, and the compression shell 402 and the protrusion 40101 are fixed by a second hexagon socket screw 4016. The air enters the space along the inner wall of the air inlet of the compression shell 402 and the circumferential side of the bearing seat body 4010.

[0031] Implementation effect: By connecting the turbocharger 4 between the air filter 1, the carburetor 2 and the cylinder head assembly 3 of the gasoline engine component of the gasoline generator set, the air inlet of the air filter 1 and the turbocharger 4 are connected, the air outlet of the carburetor 2 and the turbocharger 4 are connected, the exhaust channel of the cylinder head assembly 3 is connected with the exhaust gas inlet of the turbocharger 4, and the exhaust gas is discharged through the exhaust gas outlet of the turbocharger 4. At this time, the turbocharger 4 is driven to rotate during the exhaust gas discharge process, so that the turbocharger 4 increases the intake amount entering the carburetor 2, and finally improves the combustion completeness of the gasoline. During the exhaust gas discharge process, the exhaust turbine 405 is driven to rotate, and the exhaust turbine 405 drives the rotating shaft 404 and the intake turbine 406 to rotate. The intake turbine 406 turbocharges the air entering the carburetor 2, thereby increasing the intake volume. At the same time, due to the high temperature of the exhaust gas, the setting of the heat insulation structure 403 has a heat insulation effect to prevent the temperature of the air entering the carburetor 2 from becoming too high, and it also has the function of isolating the air and the exhaust gas.

[0032] The setting of the spacer 407 can separate the exhaust turbine 405 and the intake turbine 406. The heat insulation cover 4031, the heat insulation sleeve 4032 and the back plate 4033 of the heat insulation structure 403 can be pressed between the volute 401 and the compression shell 402 after installation, and the inner circle of the heat insulation cover 4031 is close to the spacer 407, and the inner circle of the back plate 4033 is close to the spacer 407; thereby separating the connection between the volute 401 and the compression shell 402 to achieve heat insulation; at the same time, an annular cavity 4034 is formed between the heat insulation cover 4031, the heat insulation sleeve 4032 and the back plate 4033, which can further improve the heat insulation effect.

[0033] The bearing seat body 4010 and the bearing seat cover 4014 at the upper end of the rotating shaft 404 can pass through the air inlet of the compression shell 402, so that the compression shell 402 can be installed from top to bottom, and then fixed by multiple first hexagon socket screws 4015, which is convenient for assembly; at the same time, when air enters from the air inlet of the compression shell 402, the deep groove ball bearing 4011, the bearing seat body 4010, and the bearing seat cover 4014 can also be cooled by air.

[0034] Embodiment 2: A boost system for an air-cooled generator set, such as Figure 5 As shown, the difference from the first embodiment is that it also includes a cooling structure for cooling the 3 peripheral sides of the cylinder head assembly. The cooling structure includes an air guide 51 disposed on the 3 peripheral sides of the cylinder head assembly and with the air outlet facing the turbocharger 4, a fan cover 52 disposed at the air inlet of the air guide 51, and a cooling fan 53 disposed in the fan cover 52 and blowing air into the air guide 51.

[0035] Implementation effect: When the cooling structure is in use, the cooling fan 53 in the fan cover 52 blows air into the air guide cover 51, thereby realizing air cooling on the peripheral side of the cylinder head assembly 3. At the same time, the outlet of the air guide cover 51 is directed toward the turbocharger 4, thereby realizing cooling of the volute 41 of the turbocharger 4, and the compressor housing 42 of the turbocharger 4 does not need to dissipate heat.

[0036] Embodiment 3: A boost system for an air-cooled generator set, such as Figure 6 As shown, the difference from Example 1 is that: a plurality of first through holes 40311 distributed in a circumferential array are provided on the heat insulation cover 4031, a plurality of second through holes 40331 distributed in a circumferential array are provided on the back plate 4033, an annular rubber capsule 409 is provided in the annular cavity 4034, a plurality of first protrusions 4091 embedded in the first through holes 40311 are provided on the lower surface of the annular rubber capsule 409, and a plurality of second protrusions 4092 embedded in the second through holes 40331 are provided on the upper surface of the annular rubber capsule 409.

[0037] Implementation effect: an annular rubber bladder 409 is arranged in the annular cavity 4034 formed between the heat insulation cover 4031, the heat insulation sleeve 4032 and the back plate 4033, so as to further improve the heat insulation effect; and a plurality of first protrusions 4091 embedded in the first through holes 40311 are arranged on the lower surface of the annular rubber bladder 409, and a plurality of second protrusions 4092 embedded in the second through holes 40331 are arranged on the upper surface of the annular rubber bladder 409, so as to limit the heat insulation cover 4031 and the back plate 4033; at the same time, the annular rubber bladder 409 is pressed between the heat insulation sleeve 4032 and the back plate 4033, and if there is a gap when the compression shell 402 presses the back plate 4033, the gap can be eliminated by the deformation of the annular rubber bladder 409.

[0038] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A supercharging system for an air-cooled generator set, comprising an air filter (1), a carburetor (2) and a cylinder head assembly (3), characterized in that: A turbocharger (4) is connected between the air filter (1), the carburetor (2) and the cylinder head assembly (3); the air inlet of the air filter (1) and the turbocharger (4) are in communication; the air outlet of the carburetor (2) and the turbocharger (4) are in communication; the exhaust passage of the cylinder head assembly (3) is in communication with the exhaust gas inlet of the turbocharger (4); and the exhaust gas is discharged through the exhaust gas outlet of the turbocharger (4); The turbocharger (4) comprises a volute (401) having an exhaust gas inlet and an exhaust gas outlet, a compression shell (402) arranged on the volute (401) and having an air inlet and an air outlet, a heat insulation structure (403) arranged between the volute (401) and the compression shell (402), a rotating shaft (404) rotatably connected between the volute (401) and the compression shell (402) and passing through the heat insulation structure (403), an exhaust turbine (405) arranged on the rotating shaft (404) and located in the volute (401), and an intake turbine (406) arranged on the rotating shaft (404) and located in the compression shell (402); The rotating shaft (404) is provided with a spacer sleeve (407) whose upper and lower ends respectively contact the exhaust turbine (405) and the intake turbine (406) and whose cross section is in the shape of an inverted "convex" character; the rotating shaft (404) is provided with an annular stopper (4041) for contacting the upper end of the intake turbine (406); the lower end of the rotating shaft (404) is threadedly connected with a vortex end nut (408) for contacting the exhaust turbine (405); the heat insulation structure (403) comprises a heat insulation cover (4031) which is sleeved on the circumference of the smaller radius end of the spacer sleeve (407) and is installed with its edge downward and rests on the stepped surface of the inner wall of the volute (401); and a heat insulation cover (4031) which is sleeved on the rotating shaft (404) and is installed with its edge downward and contacts the heat insulation cover (4031). The heat insulating sleeve (4032) at the edge of the upper surface, and the back plate (4033) which is sleeved on the circumference of the larger radius end of the spacer (407) and whose edge is placed inside the heat insulating sleeve (4032) after being installed with its edge facing downward, the inner circle of the heat insulating cover (4031) is close to the spacer (407), the inner circle of the back plate (4033) is close to the spacer (407) and contacts the outer wall of the heat insulating cover (4031) close to the spacer (407), and after the installation of the compression shell (402), the circumference of the upper end of the heat insulating sleeve (4032) is embedded and pressed against the upper surface edge of the back plate (4033), and an annular cavity (4034) for heat insulation is formed between the heat insulating cover (4031), the heat insulating sleeve (4032) and the back plate (4033).

2. The boost system of an air-cooled generator set according to claim 1, characterized in that: The heat insulation cover (4031) is provided with a plurality of first through holes (40311) distributed in a circumferential array, the back plate (4033) is provided with a plurality of second through holes (40331) distributed in a circumferential array, an annular rubber capsule (409) is provided in the annular cavity (4034), a plurality of first protrusions (4091) embedded in the first through holes (40311) are provided on the lower surface of the annular rubber capsule (409), a plurality of second protrusions (4092) embedded in the second through holes (40331) are provided on the upper surface of the annular rubber capsule (409), and the annular rubber capsule (409) is pressed between the heat insulation sleeve (4032) and the back plate (4033).

3. The boost system of an air-cooled generator set according to claim 2, characterized in that: A bearing seat body (4010) is sleeved on the upper end of the rotating shaft (404); two deep groove ball bearings (4011) are arranged between the bearing seat body (4010) and the rotating shaft (404); a bearing spacer (4012) is arranged on the rotating shaft (404) and is located between the two deep groove ball bearings (4011); a pressure end nut (4013) is threadedly connected to the upper end of the rotating shaft (404) and is pressed against the inner ring of the deep groove ball bearing (4011) above; a bearing seat cover (4014) covering the upper end of the rotating shaft (404) is arranged above the bearing seat body (4010); the compression housing (40 2) The air inlet is arranged at the top and is embedded in the bearing seat cover (4014). The peripheral side of the bearing seat body (4010) is provided with a plurality of protrusions (40101) distributed in a circular array and abutting against the inner wall of the air inlet of the compression shell (402). The bearing seat cover (4014) and the protrusion (40101) are fixed by a first hexagon socket screw (4015), and the compression shell (402) and the protrusion (40101) are fixed by a second hexagon socket screw (4016). Air enters the space along the inner wall of the air inlet of the compression shell (402) and the peripheral side of the bearing seat body (4010).

4. The boost system of an air-cooled generator set according to claim 1, characterized in that: It also includes a cooling structure for cooling the peripheral side of the cylinder head assembly (3), the cooling structure including an air guide cover (51) arranged on the peripheral side of the cylinder head assembly (3) and with an air outlet facing the turbocharger (4), a fan cover (52) arranged at the air inlet of the air guide cover (51), and a cooling fan (53) arranged in the fan cover (52) and blowing air into the air guide cover (51).

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