Silent generator set

Abstract

This invention belongs to the field of power generation equipment technology, specifically disclosing a silent generator set, including a housing, an internal combustion generator set housed inside the housing, and a noise reduction module inside the housing. The exhaust end of the internal combustion generator set is connected to an exhaust pipe, and the intake end of the internal combustion generator set is connected to an intake pipe. By setting an intake module with a noise reduction cavity, a return cavity, and an inlet cavity, and using a connecting cylinder to connect the inlet cavity and the noise reduction cavity, and with the noise reduction holes on the surface of the connecting cylinder, the sound waves of the high-speed intake airflow undergo multiple scattering and interference within the noise reduction cavity. The staggered protrusions on the inner wall of the noise reduction cavity and the surface of the connecting cylinder further enhance the diffuse reflection effect, causing scattered sound waves of different directions and phases to cancel each other out, significantly reducing intake aerodynamic noise. Combined with the housing made of sound-insulating material, the entire unit achieves silent operation.

Description

Technical Field

[0001] This invention belongs to the field of power generation equipment technology, and specifically discloses a silent generator set. Background Technology

[0002] Generator sets, as commonly used emergency or general power supply equipment, are widely used in industrial, commercial, and civil fields. Traditional internal combustion generator sets generate significant noise during operation due to air intake, exhaust, combustion, and mechanical movement. The aerodynamic noise generated during the intake phase, in particular, is wide-frequency and highly penetrating, making it difficult to effectively control due to the high-speed airflow passing through the intake pipes and valves. Existing noise reduction methods mostly employ passive sound insulation such as soundproof enclosures and sound-absorbing cotton. While these can block some mechanical noise from propagating outwards, their ability to suppress noise directly transmitted with the intake airflow is limited. Furthermore, the enclosed soundproofing structure can easily lead to poor heat dissipation within the unit, affecting operational stability.

[0003] Furthermore, the exhaust gas from internal combustion generator sets is at a high temperature and carries a large amount of usable waste heat. Directly releasing this heat into the atmosphere not only wastes energy but also exacerbates thermal pollution of the surrounding environment. In cold regions or low-temperature winter environments, the intake of cold air reduces combustion efficiency, leading to problems such as difficulty starting, increased fuel consumption, and worsened emissions. While existing technologies include devices for heating the intake air, these are generally complex in structure and struggle to simultaneously achieve waste heat recovery and intake noise reduction. They often require multiple independent systems working in tandem, resulting in a large overall size, increased cost, and higher failure rate. Some solutions attempt to integrate heat exchange structures within the silencing chamber, but cross-flow between the airflow channel and the heat exchange medium channel can easily occur, affecting system reliability and safety.

[0004] Therefore, those skilled in the art have proposed a silent generator set to solve the problems mentioned above. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a silent generator set to solve the problem of high intake noise in the prior art.

[0006] To achieve the above objectives, the present invention provides a silent generator set, including a housing, an internal combustion generator set disposed inside the housing, a noise reduction module disposed inside the housing, an exhaust pipe connected to the exhaust end of the internal combustion generator set, and an intake pipe connected to the intake end of the internal combustion generator set. The noise reduction module includes a connecting shell fixedly connected to the inside of the outer shell. A partition is fixedly connected to the middle of the inner wall of the connecting shell. The partition divides the interior of the connecting shell into an air intake chamber and an exhaust chamber. An air intake module is installed inside the air intake chamber, and a heat exchange module is installed inside the exhaust chamber. A guide pipe communicating with the air intake chamber is provided on one side of the connecting shell, and an exhaust pipe communicating with the exhaust chamber is provided on one side of the connecting shell.

[0007] In the above technical solution, preferably, the air intake module includes a connecting plate fixedly connected to the inner wall of the air intake cavity, and an mounting plate located above the connecting plate is fixedly connected to the inner wall of the air intake cavity. An installation cavity is formed between the mounting plate and the connecting plate. Two fixing plates are fixedly connected to the inner wall of the installation cavity. The two fixing plates sequentially divide the interior of the installation cavity along the direction away from the air intake pipe to form a silencing cavity, a reflux cavity, and an inlet cavity.

[0008] In the above technical solution, preferably, the surface of the connecting plate is provided with uniformly distributed connecting holes that communicate with the interior of the silencing cavity, and the surface of the mounting plate is provided with uniformly distributed discharge holes that communicate with the return cavity.

[0009] In the above technical solution, preferably, the interior of the silencing cavity is provided with a uniformly distributed connecting cylinder, one end of which passes through the two fixed plates in sequence and is connected to the inlet cavity, and the surface of the connecting cylinder is provided with uniformly distributed silencing holes that are connected to the silencing cavity.

[0010] In the above technical solution, preferably, the inner wall of the silencing cavity and the surface of the connecting cylinder are both fixedly connected with uniformly distributed protrusions, the protrusions on the surface of the connecting cylinder are staggered with the silencing holes, and the protrusions on two adjacent surfaces of the connecting cylinder are staggered.

[0011] In the above technical solution, preferably, the silencing cavity is provided with uniformly distributed return pipes, and the other end of the return pipes passes through the adjacent fixing plate and is connected to the return cavity.

[0012] In the above technical solution, preferably, the heat exchange module includes a fixed block fixedly connected to the bottom wall of the exhaust chamber, an adjustment plate is provided on the top of the fixed block, and uniformly distributed heat exchange tubes are fixedly connected to the top of the adjustment plate. The heat exchange tubes have U-shaped flow channels inside, and the surface of the partition plate has through holes corresponding to the heat exchange tubes. The upper end of the heat exchange tubes extends into the inside of the through holes. The fixed block has uniformly distributed hydraulic push rods inside, and the output shaft of the hydraulic push rods is fixedly connected to the bottom of the adjustment plate.

[0013] In the above technical solution, preferably, the surface of the heat exchange tube is fixedly connected with uniformly distributed heat exchange rings, and two heat exchange rings are fixedly connected with uniformly distributed heat exchange fins, and a sealing ring is embedded in the outer side of the heat exchange ring.

[0014] In the above technical solution, preferably, the fixed block has several sets of evenly distributed flow channels inside, each set of flow channels has two channels, and each set of flow channels is used to introduce heat exchange medium and to export heat exchange medium respectively. The fixed block has several sets of evenly distributed sliding tubes slidably connected inside, each set of sliding tubes has two channels and is connected to the adjacent flow channels respectively. The upper end of each set of sliding tubes passes through the fixed block and the adjusting plate in sequence and is connected to the two ends of the adjacent U-shaped flow channel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up an air intake module with a silencing cavity, a return cavity, and an inlet cavity, and using a connecting cylinder to connect the inlet cavity and the silencing cavity, and with the silencing holes on the surface of the connecting cylinder, the sound waves of the high-speed intake airflow undergo multiple scattering and interference within the silencing cavity. The staggered protrusions on the inner wall of the silencing cavity and the surface of the connecting cylinder further enhance the diffuse reflection effect, so that the scattered sound waves of different directions and phases cancel each other out, greatly reducing the intake aerodynamic noise. Combined with the shell made of sound insulation material, the entire machine can operate quietly. 2. The heat exchange module in the exhaust chamber uses the U-shaped flow channel in the heat exchange tube to introduce the cooling medium. The multiple heat exchange rings and heat exchange fins on the surface of the heat exchange tube significantly increase the heat exchange area, which can efficiently absorb the heat in the exhaust gas, realize the reuse of waste heat, reduce the exhaust temperature, and reduce the heat emission to the environment. 3. In cold environments, the adjusting plate and heat exchange tubes can be driven to rise by the hydraulic push rod, so that the heat exchange tubes pass through the partition and enter the air intake circulation area. The recovered waste heat of the exhaust gas is used to heat the air intake, thereby increasing the air intake temperature, ensuring combustion efficiency, avoiding problems such as difficulty in low-temperature start-up and incomplete combustion, and expanding the environmental adaptability range of the generator set. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the noise reduction module of the present invention; Figure 4 This is a cross-sectional schematic diagram of the noise reduction module of the present invention; Figure 5 This is a schematic diagram of the heat exchange module of the present invention; Figure 6 This is a schematic diagram of the air intake module of the present invention; Figure 7 for Figure 4 Enlarged view of A in the middle; Figure 8 This is a schematic diagram showing the distribution of the heat exchange ring, heat exchange tube, heat exchange fins, and sealing ring of the present invention.

[0017] In the diagram: 1. Outer shell; 2. Silencing module; 201. Exhaust pipe; 202. Guide pipe; 203. Connecting shell; 204. Partition plate; 21. Heat exchange module; 211. Fixing block; 212. Hydraulic push rod; 213. Adjusting plate; 214. Heat exchange tube; 215. Heat exchange ring; 216. Heat exchange fins; 217. Sealing ring; 218. Flow channel; 219. Sliding tube; 22. Intake module; 221. Mounting plate; 222. Connecting hole; 223. Fixing plate; 224. Connecting cylinder; 225. Return pipe; 226. Connecting plate; 227. Protrusion; 228. Exhaust hole; 3. Internal combustion generator set; 301. Intake pipe; 302. Exhaust pipe. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0020] like Figures 1-8 The silent generator set shown includes a housing 1, an internal combustion generator set 3 is installed inside the housing 1, a muffler module 2 is also installed inside the housing 1, an exhaust pipe 302 is connected to the exhaust end of the internal combustion generator set 3, and an intake pipe 301 is connected to the intake end of the internal combustion generator set 3. The noise reduction module 2 includes a connecting shell 203 fixedly connected to the inside of the outer shell 1. A partition 204 is fixedly connected to the middle of the inner wall of the connecting shell 203. The partition 204 divides the interior of the connecting shell 203 into an air intake chamber and an exhaust chamber. An air intake module 22 is provided inside the air intake chamber, and a heat exchange module 21 is provided inside the exhaust chamber. A guide pipe 202 connected to the air intake chamber is provided on one side of the connecting shell 203, and an exhaust pipe 201 connected to the exhaust chamber is provided on one side of the connecting shell 203. Specifically, traditional internal combustion generator sets 3 generate a lot of noise when the gas flows at high speed during intake. This invention reduces the noise transmission of internal combustion generator sets 3 by setting a noise reduction module 2 to reduce the noise of the intake. The outer shell 1 is made of sound insulation material, which is a common technical means in the field, so it has not been traced in detail. By using sound insulation materials in conjunction with the noise reduction module 2, the noise generated during the use of the device is greatly reduced, achieving the goal of quiet operation.

[0021] like Figures 1-8 As shown, the intake module 22 includes a connecting plate 226 fixedly connected to the inner wall of the intake cavity. The inner wall of the intake cavity is fixedly connected to a mounting plate 221 located above the connecting plate 226. An installation cavity is formed between the mounting plate 221 and the connecting plate 226. Two fixing plates 223 are fixedly connected to the inner wall of the installation cavity. The two fixing plates 223 divide the interior of the installation cavity in sequence along the direction away from the intake pipe 301 to form a silencing cavity, a return cavity, and an inlet cavity.

[0022] The surface of the connecting plate 226 has evenly distributed connecting holes 222 that communicate with the inside of the silencing cavity, and the surface of the mounting plate 221 has evenly distributed discharge holes 228 that communicate with the return cavity.

[0023] The silencing cavity is provided with evenly distributed connecting cylinders 224. One end of the connecting cylinder 224 passes through two fixing plates 223 in sequence and is connected to the inlet cavity. The surface of the connecting cylinder 224 is provided with evenly distributed silencing holes that are connected to the silencing cavity.

[0024] The inner wall of the silencing cavity and the surface of the connecting cylinder 224 are both fixedly connected with uniformly distributed protrusions 227. The protrusions 227 on the surface of the connecting cylinder 224 are staggered with the silencing holes, and the protrusions 227 on the surfaces of two adjacent connecting cylinders 224 are staggered.

[0025] The silencing cavity is equipped with evenly distributed return pipes 225. The other end of the return pipes 225 passes through the adjacent fixing plate 223 and is connected to the return cavity.

[0026] Specifically, during intake, the air is introduced into the intake chamber through the intake pipe 301, and after being silenced by the muffler module 2, it is introduced into the internal combustion generator set 3 through the guide pipe 202 for its use. Furthermore, during use, after the gas is introduced through the intake pipe 301, it enters the space between the mounting plate 221 and the partition plate 204, and enters the inlet cavity through the connection hole 222. The sound wave is transmitted accordingly. Guided by the connecting cylinder 224, the gas can be discharged into the interior of the silencer cavity through the silencer hole. In this process, the sound wave can be initially silenced. After the sound wave is discharged through the silencer hole, it comes into contact with the protrusion 227. The protrusion 227 can make the interior of the silencer cavity form an uneven contact surface, causing the sound wave to scatter. The staggered scattered sound waves cancel each other out, greatly reducing the noise generation. Finally, the gas is introduced into the internal combustion generator set 3 for use through the return pipe 225, the discharge hole 228 and the guide pipe 202.

[0027] like Figures 1-8As shown, the heat exchange module 21 includes a fixed block 211 fixedly connected to the bottom wall of the exhaust chamber. An adjustment plate 213 is provided on the top of the fixed block 211. A uniformly distributed heat exchange tube 214 is fixedly connected to the top of the adjustment plate 213. A U-shaped flow channel is opened inside the heat exchange tube 214. A through hole corresponding to the heat exchange tube 214 is opened on the surface of the partition plate 204. The upper end of the heat exchange tube 214 extends into the inside of the through hole. A uniformly distributed hydraulic push rod 212 is provided inside the fixed block 211. The output shaft of the hydraulic push rod 212 is fixedly connected to the bottom of the adjustment plate 213.

[0028] The surface of the heat exchange tube 214 is fixedly connected with uniformly distributed heat exchange rings 215, and the two heat exchange rings 215 are fixedly connected with uniformly distributed heat exchange fins 216. A sealing ring 217 is embedded and installed on the outside of the heat exchange rings 215.

[0029] The fixed block 211 has several sets of evenly distributed flow channels 218 inside, with two flow channels in each set. Each set of flow channels 218 is used to introduce and export the heat exchange medium. The fixed block 211 has several sets of evenly distributed sliding tubes 219 inside, with two sliding tubes in each set and connected to the adjacent flow channels 218. The upper end of each set of sliding tubes 219 passes through the fixed block 211 and the adjusting plate 213 in sequence and is connected to the two ends of the adjacent U-shaped flow channel.

[0030] Specifically, the exhaust gas discharged after the internal combustion generator set 3 is used contains a large amount of heat. The exhaust gas is injected into the heat exchange chamber through the exhaust pipe 201. The cooling medium is injected into the flow channel 218 and introduced into the U-shaped flow channel through the sliding pipe 219. The heat exchange tube 214 recovers and reuses the heat in the exhaust gas, reducing the heat in the subsequent exhaust. The setting of the heat exchange ring 215 and the heat exchange fins 216 can increase the heat exchange area and improve the heat exchange efficiency. Furthermore, when used in cold weather, the hydraulic push rod 212 is activated to push the adjusting plate 213 upward. During this process, the sliding tube 219 and the heat exchange tube 214 can move synchronously, and the heat exchange tube 214 passes through the partition 204. At this time, the cold gas introduced can be heated through the heat exchange tube 214, avoiding the low temperature of the introduced gas from affecting the normal operation of the internal combustion generator set 3. The sealing ring 217 can ensure that the through hole is blocked under normal conditions to avoid chaotic air intake and exhaust.

[0031] Working Principle: During use, gas is introduced through the inlet pipe 301 and enters the space between the mounting plate 221 and the partition plate 204. It then enters the inlet cavity through the connecting hole 222, carrying sound waves. Guided by the connecting cylinder 224, the gas is discharged into the silencing cavity through the silencing hole. This process provides initial sound silencing. After exiting through the silencing hole, the sound waves contact the protrusion 227. The protrusion 227 creates an uneven contact surface inside the silencing cavity, causing sound wave scattering. The interleaved scattered sound waves cancel each other out, greatly reducing noise. The generated gas is finally introduced into the internal combustion generator set 3 through the return pipe 225, the discharge hole 228 and the guide pipe 202. When used in cold weather, the hydraulic push rod 212 is activated to push the adjusting plate 213 upward. During this process, the sliding pipe 219 and the heat exchange pipe 214 can move synchronously and the heat exchange pipe 214 passes through the partition 204. At this time, the cold gas introduced can be heated through the heat exchange pipe 214 to avoid the low temperature of the introduced gas affecting the normal use of the internal combustion generator set 3. The sealing ring 217 can ensure that the through hole is blocked under normal conditions to avoid the chaotic inlet and outlet of gas.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A silent generator set, comprising a casing (1), characterized in that, An internal combustion generator set (3) is provided inside the outer shell (1). A muffler module (2) is also provided inside the outer shell (1). An exhaust pipe (302) is connected to the outlet end of the internal combustion generator set (3). An intake pipe (301) is connected to the intake end of the internal combustion generator set (3). The noise reduction module (2) includes a connecting shell (203) fixedly connected to the inside of the outer shell (1). A partition (204) is fixedly connected to the middle of the inner wall of the connecting shell (203). The partition (204) divides the inside of the connecting shell (203) into an air intake chamber and an exhaust chamber. An air intake module (22) is provided inside the air intake chamber, and a heat exchange module (21) is provided inside the exhaust chamber. A guide pipe (202) connected to the air intake chamber is provided on one side of the connecting shell (203), and an exhaust pipe (201) connected to the exhaust chamber is provided on one side of the connecting shell (203).

2. The silent generator set according to claim 1, characterized in that, The air intake module (22) includes a connecting plate (226) fixedly connected to the inner wall of the air intake cavity. The inner wall of the air intake cavity is fixedly connected to an mounting plate (221) located above the connecting plate (226). An installation cavity is formed between the mounting plate (221) and the connecting plate (226). The inner wall of the installation cavity is fixedly connected to two fixing plates (223). The two fixing plates (223) sequentially divide the interior of the installation cavity along the direction away from the air intake pipe (301) to form a silencing cavity, a reflux cavity, and an inlet cavity.

3. A silent generator set according to claim 2, characterized in that, The surface of the connecting plate (226) is provided with evenly distributed connecting holes (222) that communicate with the inside of the silencing cavity, and the surface of the mounting plate (221) is provided with evenly distributed discharge holes (228) that communicate with the return cavity.

4. A silent generator set according to claim 3, characterized in that, The silencing cavity is provided with a uniformly distributed connecting cylinder (224). One end of the connecting cylinder (224) passes through the two fixing plates (223) in sequence and is connected to the inlet cavity. The surface of the connecting cylinder (224) is provided with uniformly distributed silencing holes that are connected to the silencing cavity.

5. A silent generator set according to claim 4, characterized in that, The inner wall of the silencing cavity and the surface of the connecting cylinder (224) are both fixedly connected with uniformly distributed protrusions (227). The protrusions (227) on the surface of the connecting cylinder (224) are staggered with the silencing holes, and the protrusions (227) on the surfaces of two adjacent connecting cylinders (224) are staggered.

6. A silent generator set according to claim 5, characterized in that, The silencing cavity is provided with evenly distributed return pipes (225), and the other end of the return pipes (225) passes through the adjacent fixing plate (223) and is connected to the return cavity.

7. A silent generator set according to claim 1, characterized in that, The heat exchange module (21) includes a fixed block (211) fixedly connected to the bottom wall of the exhaust chamber. An adjustment plate (213) is provided on the top of the fixed block (211). A uniformly distributed heat exchange tube (214) is fixedly connected to the top of the adjustment plate (213). A U-shaped flow channel is opened inside the heat exchange tube (214). A through hole corresponding to the heat exchange tube (214) is opened on the surface of the partition plate (204). The upper end of the heat exchange tube (214) extends into the inside of the through hole. A uniformly distributed hydraulic push rod (212) is provided inside the fixed block (211). The output shaft of the hydraulic push rod (212) is fixedly connected to the bottom of the adjustment plate (213).

8. A silent generator set according to claim 7, characterized in that, The surface of the heat exchange tube (214) is fixedly connected with uniformly distributed heat exchange rings (215), and uniformly distributed heat exchange fins (216) are fixedly connected between two heat exchange rings (215). A sealing ring (217) is embedded and installed on the outside of the heat exchange ring (215).

9. A silent generator set according to claim 8, characterized in that, The fixed block (211) has several sets of evenly distributed flow channels (218) inside. Each set of flow channels (218) has two channels, and each set of flow channels (218) is used to introduce heat exchange medium and to export heat exchange medium. The fixed block (211) has several sets of evenly distributed sliding tubes (219) slidably connected inside. Each set of sliding tubes (219) has two tubes and is connected to the adjacent flow channels (218). The upper end of each set of sliding tubes (219) passes through the fixed block (211) and the adjusting plate (213) in sequence and is connected to the two ends of the adjacent U-shaped flow channels.

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