A super-silent generator set

Abstract

The utility model provides a kind of super-silent generator set, including shell, power unit, the shell is provided with baffle one, baffle two and deflector, baffle one, baffle two and deflector make the shell form with the air inlet chamber, power chamber and exhaust chamber distributed in sequence, and the top of air inlet chamber is communicated with power chamber, the bottom of exhaust chamber is communicated with power chamber;Shell is provided with the air inlet of air inlet chamber intercommunication, air inlet is close to the bottom of shell;Shell is provided with the exhaust pipe of exhaust chamber intercommunication, exhaust pipe is connected in the top of shell in one end, exhaust pipe has at least one bending structure;Power unit is arranged in power chamber, and the exhaust end of power unit passes through baffle two and is towards exhaust chamber;Air inlet chamber, exhaust chamber and exhaust pipe are all provided with sound-absorbing component.The utility model has the characteristics of high space utilization, and air intake, air outlet all have double sound-absorbing function.

Description

Technical Field

[0001] This utility model relates to the technical field of generator sets, and in particular to an ultra-quiet generator set. Background Technology

[0002] A generator set is a complete set of equipment that uses a diesel engine as its prime mover to drive a synchronous generator, ultimately converting the chemical energy of diesel fuel into electrical energy. It typically serves as a backup power source or mobile power source, providing stable and reliable electricity in areas where mains power is interrupted or in remote, power-deprived areas.

[0003] Traditional generator sets typically operate at 100-120 decibels, which is quite noisy and includes intake noise, exhaust noise, and generator noise, making them unsuitable for use in low-noise areas. To address the noise problem, engineers have developed related generator sets. For example, the utility model patent with publication number CN208441926U relates to an ultra-quiet diesel generator set, which includes a housing with a diesel generator set installed inside. An air outlet is located on the left side of the generator set, containing a diesel engine muffler. A first fan is installed above the air outlet. An air inlet is located on the left side of the housing, and a diesel engine water tank is installed on the right side. Louvers are installed on the air inlet. A sound-absorbing layer is placed between the diesel engine water tank and the generator set. A silent exhaust vent is located on the sound-absorbing layer between the air outlet and the generator set. The sound-absorbing layer is composed of sound-absorbing cotton and steel plates, with the sound-absorbing cotton adhered and fixed to the inside of the steel plates. A second fan is installed on the silent exhaust vent. A silent exhaust vent is located on the upper right side of the front of the housing, and an air outlet and a silent exhaust vent are located on the top of the housing. During use, the sound-absorbing layer inside the chassis provides good sound insulation. The diesel engine muffler is placed in front of the second fan, which can cool the muffler and reduce the emission noise of the diesel generator set.

[0004] In practical use, diesel generator sets require sufficient air to cool the engine and other components. This not only helps with heat dissipation but also ensures combustion efficiency. A larger airflow also means higher intake and exhaust noise, which significantly impact the overall noise level. However, current technologies primarily focus on noise reduction for diesel generator sets, making it difficult to reduce intake and exhaust noise, resulting in poor noise reduction and silencing effects. Utility Model Content

[0005] In order to improve the problem of poor noise reduction and silencing effect of existing intake and exhaust noise, this utility model provides a generator set with high space utilization and dual noise reduction function for both intake and exhaust.

[0006] This utility model provides an ultra-quiet generator set, which adopts the following technical solution: An ultra-quiet generator set includes a housing and a power unit for generating electricity and driving air intake for heat dissipation. The housing contains a first partition, a second partition, and a guide plate. These partitions create sequentially distributed air intake chambers, a power chamber, and an exhaust chamber within the housing. The top of the air intake chamber communicates with the power chamber, and the bottom of the exhaust chamber communicates with the power chamber. The housing has an air inlet connected to the air intake chamber, located near the bottom of the housing. The housing also has an exhaust pipe connected to the exhaust chamber, with one end connected to the top of the housing. The exhaust pipe has at least one bend. The power unit is located within the power chamber, and its exhaust end passes through the second partition and faces the exhaust chamber. The air intake chamber, exhaust chamber, and exhaust pipe are all equipped with a sound-absorbing component. The sound-absorbing component includes a support frame and several sound-absorbing panels mounted on the support frame. The sound-absorbing panels have several hollow sound-absorbing holes arranged in a honeycomb pattern, and the several sound-absorbing panels are arranged at equal intervals.

[0007] By adopting the above technical solution, when the power unit is operating and intakes air, the air outside the casing enters the intake chamber through the air inlet at the bottom of the casing. The air moves upward in the intake chamber and enters the power unit through the communication port to dissipate heat. This causes the intake airflow to form a Z-shaped direction, achieving a noise reduction effect. At the same time, sound insulation and noise reduction are achieved through the sound-absorbing components located in the intake chamber. The airflow direction and the sound-absorbing components provide a dual noise reduction effect during air intake. Therefore, there is no need to install a specific shaped airflow structure, which forms a Z-shaped intake airflow and cleverly divides the intake chamber, providing space for the installation of the sound-absorbing components.

[0008] During exhaust, hot air is discharged from the exhaust end of the power unit to the bottom of the exhaust chamber. The hot air then moves upwards from the intake chamber to the exhaust duct, passing through its bends before finally exiting from the end of the duct. At this point, the exhaust airflow also forms multiple bends. Simultaneously, noise reduction and insulation are achieved through the silencers within the exhaust chamber and duct. The duct layout and silencers provide a dual noise reduction effect during air intake, significantly reducing noise during the intake and exhaust processes.

[0009] Finally, the honeycomb-like arrangement of hollow sound-absorbing pores greatly increases the effective contact area between sound waves and the material. When noise waves enter these hollow pores, they undergo multiple reflections, diffractions, and frictions within the pores, effectively converting sound energy into heat energy. Several sound-absorbing panels further increase the contact area between sound waves and the sound-absorbing material, thus effectively improving sound wave absorption, significantly reducing noise propagation, and achieving excellent noise reduction performance.

[0010] Preferably, the shell is a structure made of a homogeneous single-layer thin steel plate spliced ​​together.

[0011] By adopting the above technical solution, the high density and rigidity of steel plates enable them to effectively absorb the vibrational energy of sound waves. Simultaneously, by preventing sound waves from directly penetrating the plate, noise isolation is achieved. Through this sound insulation principle, steel plates can effectively reduce noise propagation and improve the quietness of the external acoustic environment.

[0012] Preferably, the first partition and the shell wall form an air intake chamber; the first partition, the second partition, and the shell wall form a power chamber; the guide plate is away from the power chamber, one side of the guide plate is fixedly connected to the second partition, and the other side of the guide plate is fixedly connected to the inner wall of the shell. The guide plate is inclined upward from near the second partition to away from the second partition. The guide plate divides the remaining space inside the shell into a fuel tank chamber and an exhaust chamber, and the exhaust chamber is located above the fuel tank chamber.

[0013] By adopting the above technical solution, the inclined guide plate helps to guide the gas in the exhaust chamber to flow upward.

[0014] Preferably, the exhaust duct has only one bend.

[0015] By adopting the above technical solution, the exhaust airflow forms a Z-shaped direction, which helps to extend the sound wave propagation path, allowing the sound waves to be reflected at the bending structure, blocking the direct sound propagation, and effectively absorbing and attenuating noise.

[0016] Preferably, the air inlet is provided with a first louver, and the exhaust pipe is provided with a second louver at its end.

[0017] By adopting the above technical solution, the first and second louvers help to prevent dust, leaves, insects and other debris from entering the shell.

[0018] Preferably, the sound-absorbing panel is a honeycomb gypsum board.

[0019] By adopting the above technical solutions, honeycomb gypsum board has excellent sound absorption and insulation effects. Furthermore, gypsum material is lightweight while possessing excellent compressive and flexural strength, which not only does not increase the overall weight but also effectively ensures the stability and durability of the structure. Most generator sets are difficult to transport due to their large weight, but honeycomb gypsum board, with its lightweight properties, can effectively reduce the overall weight, thereby reducing the burden during handling and installation.

[0020] Preferably, the support frame includes a groove for accommodating the sound-absorbing panel and a mounting plate connected to the groove; the groove wraps around the sound-absorbing panel, the grooves are arranged in a number corresponding to the number of sound-absorbing panels, and a plurality of grooves are wrapped around a plurality of sound-absorbing panels in a one-to-one correspondence; the mounting plate is fixedly connected to the plurality of grooves, and the mounting plate is detachably connected to the air intake chamber, the exhaust chamber, or the exhaust pipe.

[0021] By adopting the above technical solution, the muffler components are installed in the air intake chamber, the exhaust chamber, and the exhaust pipe respectively. The muffler components can be fixed or removed by loading and unloading the mounting plate, which makes loading and unloading convenient and easy to maintain.

[0022] Preferably, the power unit includes an engine, a generator coaxially connected to the engine, and a radiator for cooling the engine. The engine's fuel tank is located in a fuel tank compartment, and the fuel tank is connected to the engine via a pipe. The radiator includes a fan for driving air intake.

[0023] By adopting the above technical solution, during operation, fuel is supplied through the fuel tank to enable the engine to generate mechanical energy, which drives the generator to generate electricity. The radiator dissipates heat from the engine, thereby realizing the generation and output of electrical energy. At the same time, the fan inside the radiator drives the intake air to dissipate heat.

[0024] Preferably, the generator is connected to a silencer via a pipe, and the silencer is a heavy-duty exhaust silencer.

[0025] By adopting the above technical solutions, the noise generated during engine operation can be reduced, further reducing the overall noise level.

[0026] Preferably, the outer surface of the pipe connecting the muffler and the generator is provided with a nano-aerogel layer.

[0027] By adopting the above technical solution, nano-aerogels not only possess excellent thermal insulation properties, effectively preventing heat conduction, but also exhibit certain sound absorption characteristics, reducing noise generated by high-temperature gas flow. By reducing noise pollution, this helps create a quieter working environment.

[0028] Compared with the prior art, the present invention has the following beneficial effects: 1. During air intake, outside air enters the intake chamber through the air inlet at the bottom of the casing. The air moves upward in the intake chamber and enters the power unit through the connection port to the intake chamber for heat dissipation. That is, through the partition and air inlet, the intake airflow forms a Z-shaped direction to achieve a noise reduction effect. At the same time, the sound-absorbing components located in the intake chamber provide sound insulation and noise reduction. The air duct direction and the sound-absorbing components provide a dual noise reduction effect during air intake, so there is no need to install a specific shape of air duct structure. The intake airflow forms a Z-shaped direction and the intake chamber is cleverly divided to provide space for the installation of the sound-absorbing components. 2. During exhaust, hot air is discharged from the exhaust end of the power unit to the bottom of the exhaust chamber. The hot air moves upward from the intake chamber and reaches the exhaust pipe. After passing through the bend in the exhaust pipe, the hot air is finally discharged from the end of the exhaust pipe. At this time, the exhaust airflow also forms multiple bends. At the same time, the sound-absorbing components in the exhaust chamber and exhaust pipe provide sound absorption and insulation. The air duct direction and the sound-absorbing components provide a dual noise reduction effect during air intake, which greatly reduces the noise during the air intake and exhaust process. 3. By using bottom air intake and top exhaust, the system cleverly utilizes the physical properties of hot air, which has a low density and rises naturally. When bottom air intake is used, the system preferentially draws in cooler air from the environment, while top exhaust promptly removes hot air, avoiding mutual interference between hot and cold airflows and thus ensuring the efficiency and stability of the heat dissipation system. 4. The honeycomb-shaped arrangement of hollow sound-absorbing pores greatly increases the effective contact area between sound waves and the board. When noise sound waves enter these hollow pores, they undergo multiple reflections, diffractions, and frictions inside, thus effectively converting sound energy into heat energy and dissipating it. Several sound-absorbing panels further increase the contact area of ​​sound waves, thereby fully contacting the sound waves with the sound-absorbing material, effectively improving the sound wave absorption effect, significantly reducing noise propagation, and achieving excellent noise reduction performance. 5. The muffler reduces the noise generated during engine operation, further reducing overall noise. Tests have shown that it can effectively control noise below 45 decibels, meeting the noise requirements of most users. The longer the path of the intake or exhaust airflow, the better the noise reduction effect. The larger the effective area of ​​the sound-absorbing panel in the muffler assembly, the better the noise reduction effect. In actual use, the path length of the intake or exhaust airflow or the effective area of ​​the sound-absorbing panel can be adjusted according to the needs of the scenario. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0031] Figure 2 This is a schematic diagram of the internal structure of the shell in an embodiment of this utility model.

[0032] Figure 3 This is a cross-sectional view of the shell in an embodiment of this utility model.

[0033] Figure 4 This is a schematic diagram of the air inlet and outlet directions in an embodiment of this utility model.

[0034] Figure 5 This is a schematic diagram of the structure of the noise reduction component in an embodiment of this utility model.

[0035] The component designations are as follows: 1. Housing; 2. Power unit; 21. Engine; 22. Generator; 23. Radiator; 3. Partition 1; 4. Partition 2; 5. Deflector; 6. Intake chamber; 7. Power chamber; 8. Exhaust chamber; 9. Air inlet; 10. Exhaust duct; 11. Silencing assembly; 111. Support frame; 1111. Plate groove; 1112. Mounting plate; 112. Sound-absorbing plate; 12. Fuel tank; 13. First louver; 14. Second louver; 15. Silencer; 16. Inspection door. Detailed Implementation

[0036] The following will refer to the appendix in the embodiments of this utility model. Figures 1 to 5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] An ultra-quiet generator set, referring to Figure 1 and Figure 2 The system includes a rectangular housing 1 and a power unit 2 disposed within the housing 1 for generating electricity and driving air intake for heat dissipation. An inspection port is provided on the long side of the housing 1, and an inspection door 16 is provided on the top cover of the inspection port. A sealing strip is wrapped around the edge of the inspection door 16. The sealing strip reduces the gap between the inspection door 16 and the inspection port, improving overall sealing and thus preventing water droplets or dust from entering through the gap between the inspection door 16 and the inspection port.

[0038] Shell 1 is a structure made of homogeneous single-layer thin steel plates. Due to the high density and rigidity of the steel plates, they can effectively absorb the vibration energy of sound waves. At the same time, by preventing sound waves from directly penetrating the plates, noise isolation is achieved. Through this sound insulation principle, the steel plates can effectively reduce noise propagation and improve the quietness of the external acoustic environment.

[0039] Reference Figure 2 and Figure 3 The housing 1 contains a first partition 3, a second partition 4, and a guide plate 5. The first partition 3 and the second partition 4 are arranged at intervals along the length of the housing 1. The first partition 3 and the wall of the housing 1 form an intake chamber 6, while the first partition 3, the second partition 4, and the wall of the housing 1 form a power chamber 7, with the top of the intake chamber 6 communicating with the power chamber 7. The guide plate 5 is located away from the power chamber 7. One side of the guide plate 5 is bolted to the second partition 4, and the other side is bolted to the inner wall of the housing 1. The guide plate 5 is inclined, tilting upwards from near the second partition 4 towards away from it. The guide plate 5 divides the remaining space within the housing 1 into a fuel tank chamber 12 and an exhaust chamber 8. Specifically, the bottom sidewall of the guide plate 5 forms the fuel tank chamber 12 with the housing 1, and the top sidewall of the guide plate 5 forms the exhaust chamber 8 with the housing 1; that is, the exhaust chamber 8 is located above the fuel tank chamber 12. Furthermore, the bottom of the exhaust chamber 8 is connected to the power chamber 7. Thus, through the first partition 3, the second partition 4, and the guide plate 5, the intake chamber 6, the power chamber 7, and the exhaust chamber 8 are formed in sequence and connected within the housing 1.

[0040] Reference Figure 3 and Figure 4 The housing 1 has an air inlet 9 that connects to the air intake chamber 6. The air inlet 9 is located at one end of the housing 1 and extends through the inner and outer surfaces of the housing 1, with the air inlet 9 near the bottom of the housing 1. The housing 1 is provided with an exhaust pipe 10 that connects to the exhaust chamber 8. The exhaust pipe 10 has at least one bend. In this embodiment, the exhaust pipe 10 has only one bend, that is, the exhaust pipe 10 is L-shaped, and one end of the exhaust pipe 10 is connected to the top of the housing 1. In addition, the power unit 2 is disposed in the power chamber 7, and the exhaust end of the power unit 2 passes through the partition 4 and faces the exhaust chamber 8.

[0041] Therefore, when the power unit 2 is working and driving the intake, air from outside the casing 1 enters the intake chamber 6 from the air inlet 9 at the bottom of the casing 1. The air moves upward in the intake chamber 6 and enters the intake chamber 6 through the communication port with the intake chamber 6, thus reaching the power unit 2 for heat dissipation, thereby forming a Z-shaped airflow. Similarly, when the power unit 2 is working and driving the exhaust, hot air is discharged from the exhaust end of the power unit 2 to the bottom of the exhaust chamber 8. The hot air moves upward from the intake chamber 6 through the principle of thermal ascent and the guide plate 5 and reaches the exhaust pipe 10. After passing through the L-shaped bend structure of the exhaust pipe 10, the hot air is finally discharged from the end of the exhaust pipe 10. At this time, the exhaust airflow also forms a Z-shaped airflow.

[0042] Both the intake and exhaust airflows follow a Z-shaped trajectory, which extends the sound wave propagation path. This allows the sound waves to reflect multiple times at the bends, increasing the contact time with the sound-absorbing material on the duct's inner wall. More sound energy is absorbed and converted into heat. Furthermore, the Z-shaped bends block direct sound propagation, causing phase interference at the corners and partial cancellation of sound waves, effectively absorbing and attenuating noise. Simultaneously, it slows the airflow speed, reducing turbulence and eddies, and minimizing regenerated noise caused by airflow impacting the duct's inner wall, thus suppressing noise generation at its source. Therefore, by forming a Z-shaped trajectory for both intake and exhaust airflows, the intake path is reasonably extended without increasing the footprint of the 22 generator sets, reducing airflow disturbance, avoiding noise generation, and improving intake noise suppression.

[0043] In addition, refer to Figure 2 and Figure 3 The air inlet 9 is equipped with a first louver 13, and the exhaust duct 10 is equipped with a second louver 14 at its end. Both the first louver 13 and the second louver 14 are existing technologies and can be implemented using commercially available louvers. The first louver 13 and the second louver 14 help to prevent dust, leaves, insects and other debris from entering the housing 1.

[0044] Furthermore, refer to Figure 3 and Figure 5 The intake chamber 6, the exhaust chamber 8 and the exhaust pipe 10 are all equipped with a silencer assembly 11. That is, there are three sets of silencer assemblies 11, which are located in the intake chamber 6, the exhaust chamber 8 and the exhaust pipe 10 respectively.

[0045] Specifically, refer to Figure 5The sound-absorbing component 11 includes a support frame 111 and several sound-absorbing panels 112 disposed on the support frame 111. The sound-absorbing panels 112 are square plates with several hollow sound-absorbing holes arranged in a honeycomb pattern, greatly increasing the effective contact area between sound waves and the plate. When noise waves enter these hollow holes, they undergo multiple reflections, diffractions, and friction within them, effectively converting sound energy into heat energy. The several sound-absorbing panels 112 are arranged at equal intervals along the width direction of the housing 1, with the surfaces of adjacent sound-absorbing panels 112 facing each other, further increasing the contact area between sound waves and the sound-absorbing material. This effectively enhances the sound wave absorption effect, significantly reduces noise propagation, and achieves excellent noise reduction performance.

[0046] In this embodiment, the sound-absorbing panel 112 is a honeycomb gypsum board. Honeycomb gypsum board has excellent sound absorption and insulation effects. In addition, gypsum material is lightweight and has excellent compressive and bending strength, which not only does not increase the overall weight, but also effectively ensures the stability and durability of the structure. Most generator sets are difficult to transport due to their large weight, but honeycomb gypsum board, with its lightweight characteristics, can effectively reduce the overall weight, thereby reducing the burden during transportation and installation.

[0047] Reference Figure 5 The support frame 111 includes a groove 1111 for accommodating sound-absorbing panels 112 and a mounting plate 1112 connected to the groove 1111. The groove 1111 surrounds the sound-absorbing panels 112, and the number of grooves 1111 corresponds to the number of sound-absorbing panels 112, with several grooves 1111 corresponding to several sound-absorbing panels 112. The mounting plate 1112 is elongated and distributed along the width direction of the housing 1. The mounting plate 1112 is fixedly connected to several grooves 1111. There are two mounting plates 1112, which are mirror images of each other along the length direction of the housing 1, so that the two mounting plates 1112 are located on both sides of the groove 1111. Furthermore, the mounting plate 1112 can be detachably connected to the air intake chamber 6, the exhaust chamber 8, or the exhaust pipe 10, thereby installing the three sets of silencers 11 in the air intake chamber 6, the exhaust chamber 8, and the exhaust pipe 10 respectively. By loading and unloading the mounting plate 1112, the silencers 11 can be fixed or removed, making loading and unloading convenient and easy to maintain.

[0048] When the power unit 2 is operating and air is being drawn in, air from outside the casing 1 enters the intake chamber 6 through the air inlet 9 at the bottom of the casing 1. The air moves upward in the intake chamber 6 and enters the intake chamber 6 through the communication port, thus reaching the power unit 2 for heat dissipation. This causes the intake airflow to form a Z-shaped direction, achieving a noise reduction effect. At the same time, the sound-absorbing component 11 located in the intake chamber 6 provides sound insulation and noise reduction. The airflow direction and the sound-absorbing component 11 provide a dual noise reduction effect during air intake. Therefore, there is no need to install a specific shaped airflow structure, which forms a Z-shaped intake airflow and cleverly divides the intake chamber, providing space for the installation of the sound-absorbing component 11.

[0049] When the power unit 2 is operating and exhausting air, hot air is discharged from the exhaust end of the power unit 2 to the bottom of the exhaust chamber 8. Guided by the principle of thermal ascent and the guide plate 5, the hot air moves upward from the intake chamber 6 to the exhaust duct 10. After passing through the L-shaped bend in the exhaust duct 10, the hot air is finally discharged from the end of the exhaust duct 10. At this time, the exhaust airflow also forms a Z-shaped direction. Simultaneously, the exhaust chamber 8 and the silencer component 11 within the exhaust duct 10 provide noise reduction and insulation, offering a dual noise reduction effect during air intake through the airflow direction and the silencer component 11. This significantly reduces noise during the air intake and exhaust process.

[0050] By using a bottom-intake and top-exhaust system, the system cleverly utilizes the physical properties of hot air, which has a lower density and tends to rise. When the system draws in air from the bottom, it preferentially draws in cooler ambient air, while the top exhaust promptly expels hot air, avoiding interference between hot and cold airflows and thus ensuring the efficiency and stability of the cooling system.

[0051] Specifically, let's look back. Figure 2 and Figure 3 The power unit 2 includes an engine 21, a generator 22 coaxially connected to the engine 21, and a radiator 23 for cooling the engine 21. The engine 21 is a diesel engine, and its fuel tank is located in the fuel tank chamber 12, connected to the engine 21 via a pipe. Both the engine 21 and generator 22 are mature technologies in the prior art and will not be described in detail here. The engine 21 and generator 22 are distributed sequentially along the length of the casing 1. The radiator 23 is located away from the generator 22 and includes a fan that drives the air intake. In this embodiment, the radiator 23 uses a radiator tank specifically designed for cooling the engine 21. During operation, fuel is supplied from the fuel tank, causing the engine 21 to generate mechanical energy, which drives the generator 22 to generate electricity. The radiator 23 cools the engine 21, thereby achieving the generation and output of electrical energy. Simultaneously, the fan inside the radiator 23 drives the air intake, and the exhaust end of the radiator 23 is the exhaust end of the power unit 2.

[0052] In addition, refer to Figure 1 and Figure 2 The generator 22 is connected to a muffler 15 via a pipe. The muffler 15 is a heavy-duty exhaust muffler, which reduces the noise generated during the operation of the engine 21, further reducing overall noise. A nano-aerogel layer is provided on the outer surface of the pipe connecting the muffler 15 and the generator 22. The nano-aerogel is formed by spraying it onto the outer surface of the pipe. The nano-aerogel not only has excellent heat insulation properties, effectively preventing heat conduction, but also has certain sound absorption characteristics, reducing noise generated by high-temperature gas flow. By reducing noise pollution, it helps create a quieter working environment.

[0053] The implementation principle of this application is as follows: When the power unit 2 is working, the engine 21 generates mechanical energy to drive the generator 22 to generate electricity, and the radiator 23 dissipates heat from the engine 21, thereby realizing the generation and output of electrical energy. At the same time, the fan in the radiator 23 drives the intake air.

[0054] During air intake, outside air enters the intake chamber 6 from the air inlet 9 at the bottom of the housing 1. The air moves upward in the intake chamber 6 and then enters the power unit 2 through the communication port between the air inlet 1 and the intake chamber 6 for heat dissipation. This creates a Z-shaped airflow pattern, achieving a noise reduction effect. Simultaneously, the sound-absorbing component 11 located in the intake chamber 6 provides sound insulation and noise reduction. The airflow pattern and the sound-absorbing component 11 together provide a dual noise reduction effect during air intake. This eliminates the need for a specific shaped airflow structure, cleverly dividing the intake chamber and providing space for the sound-absorbing component 11, reducing footprint and improving noise reduction.

[0055] During exhaust, hot air is discharged from the radiator 23 at the exhaust end to the bottom of the exhaust chamber 8. Guided by the principle of thermal ascent and the guide plate 5, the hot air moves upward from the intake chamber 6 to the exhaust duct 10. After passing through the L-shaped bend in the exhaust duct 10, the hot air is finally discharged from the end of the exhaust duct 10. At this time, the exhaust airflow also forms a Z-shaped direction. Simultaneously, the exhaust chamber 8 and the silencer component 11 in the exhaust duct 10 provide noise reduction and sound insulation. The airflow direction and the silencer component 11 provide a dual noise reduction effect during air intake, thereby greatly reducing the noise during the air intake and exhaust process.

[0056] Tests have shown that it can effectively control noise below 45 decibels, meeting the noise requirements of most users; the longer the path of the intake or exhaust airflow, the better the noise reduction effect; the larger the effective area of ​​the sound-absorbing panel 112 in the sound-absorbing component, the better the noise reduction effect; in actual use, the path length of the intake or exhaust airflow or the effective area of ​​the sound-absorbing panel 112 can be adjusted according to the needs of the scenario.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An ultra-quiet generator set, comprising a casing (1) and a power unit (2) for generating electrical energy and driving air intake for heat dissipation, characterized in that: The housing (1) is provided with a first partition (3), a second partition (4), and a guide plate (5). The first partition (3), the second partition (4), and the guide plate (5) form an intake chamber (6), a power chamber (7), and an exhaust chamber (8) arranged sequentially inside the housing (1). The top of the intake chamber (6) is connected to the power chamber (7), and the bottom of the exhaust chamber (8) is connected to the power chamber (7). The housing (1) has an opening for connecting the intake chamber and the exhaust chamber. The air inlet (9) of the air chamber (6) is close to the bottom of the housing (1); the housing (1) is provided with an exhaust pipe (10) that communicates with the exhaust chamber (8), one end of the exhaust pipe (10) is connected to the top of the housing (1), and the exhaust pipe (10) has at least one bend; the power unit (2) is located in the power chamber (7), and the exhaust end of the power unit (2) passes through the partition plate (4) and faces the exhaust chamber (8); The air intake chamber (6), the exhaust chamber (8) and the exhaust pipe (10) are all equipped with a sound-absorbing component (11). The sound-absorbing component (11) includes a support frame (111) and a plurality of sound-absorbing panels (112) disposed on the support frame (111). The sound-absorbing panels (112) have a plurality of hollow sound-absorbing holes arranged in a honeycomb pattern. The plurality of sound-absorbing panels (112) are arranged at equal intervals.

2. The ultra-quiet generator set according to claim 1, characterized in that: The shell (1) is a structure made of a homogeneous single-layer thin steel plate spliced ​​together.

3. The ultra-quiet generator set according to claim 1, characterized in that: The first partition (3) and the wall of the housing (1) form an air intake chamber (6); the first partition (3), the second partition (4) and the wall of the housing (1) form a power chamber (7); the guide plate (5) is away from the power chamber (7), one side of the guide plate (5) is fixedly connected to the second partition (4), and the other side of the guide plate (5) is fixedly connected to the inner wall of the housing (1). The guide plate (5) is inclined upward from near the second partition (4) to away from the second partition (4). The guide plate (5) divides the remaining space in the housing (1) into an oil tank chamber (12) and an exhaust chamber (8). The exhaust chamber (8) is located above the oil tank chamber (12).

4. The ultra-quiet generator set according to claim 1, characterized in that: The exhaust pipe (10) has only one bend.

5. The ultra-quiet generator set according to claim 1, characterized in that: The air inlet (9) is provided with a first louver (13), and the exhaust pipe (10) is provided with a second louver (14) at its end.

6. The ultra-quiet generator set according to claim 1, characterized in that: The sound-absorbing panel (112) is a honeycomb gypsum board.

7. The ultra-quiet generator set according to claim 1, characterized in that: The support frame (111) includes a groove (1111) for accommodating a sound-absorbing panel (112) and a mounting plate (1112) connected to the groove (1111). The groove (1111) wraps around the sound-absorbing panel (112), and the number of grooves (1111) corresponds to the number of sound-absorbing panels (112). Several grooves (1111) are wrapped around multiple sound-absorbing panels (112) one by one. The mounting plate (1112) is fixedly connected to several grooves (1111). The mounting plate (1112) can be detachably connected to the air intake chamber (6), the exhaust chamber (8), or the exhaust pipe (10).

8. The ultra-quiet generator set according to claim 3, characterized in that: The power unit (2) includes an engine (21), a generator (22) coaxially connected to the engine (21), and a radiator (23) for cooling the engine (21). The fuel tank of the engine (21) is located in the fuel tank chamber (12). The fuel tank is connected to the engine through a pipe. The radiator (23) includes a fan for driving air intake.

9. The ultra-quiet generator set according to claim 8, characterized in that: The generator (22) is connected to a silencer (15) via a pipe. The silencer (15) is a heavy-duty exhaust silencer (15).

10. The ultra-quiet generator set according to claim 9, characterized in that: The outer surface of the pipe connecting the muffler (15) and the generator (22) is provided with a nano-aerogel layer.

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