A fan noise reduction guide structure for a gas engine

Abstract

The application relates to the technical field of gas engine fans, in particular to a noise reduction and flow guide structure of a gas engine fan, which comprises a sound absorption cylinder, fixed holes and sound diffusion grooves are formed in the sound absorption cylinder, a sound insulation shell is further arranged on the sound absorption cylinder, circulation grooves and guide grooves are formed in the sound insulation shell, guide pipes are arranged on the two sides of the sound insulation shell, a noise reduction assembly is arranged on the guide pipes, and an output cylinder is further arranged on the sound insulation shell. The sound absorption cylinder is arranged in the noise reduction shell, the sound absorption cylinder is provided with a large inlet and a small outlet, the sound insulation shell and the guide pipes divide the noise into three parts for shunting and weakening, and the output cylinder disperses and discharges the noise. On one hand, the sound absorption cylinder directly covers the heat dissipation fan, and the sound absorption cylinder preliminarily absorbs the noise through the sound diffusion grooves; on the other hand, the circular circulation grooves between the sound insulation shell and the sound absorption cylinder can form an air flow circulation channel, the dispersing holes of the output cylinder are matched, the heat dissipation air flow and the weakened noise can be synchronously discharged, and the noise reduction and heat dissipation are coordinately and uniformly realized.

Description

Technical Field

[0001] This application relates to the technical field of gas engine fans, and in particular to a noise reduction and airflow guiding structure for a gas engine fan. Background Technology

[0002] During the operation of a gas engine, the fan, as a core heat dissipation component, directly affects the engine's operational stability and service life. However, when the gas engine fan operates at high speed, it generates a great deal of noise, so a noise reduction and airflow guiding structure is needed to address the noise problem.

[0003] To address the aforementioned issues, existing technologies utilize soundproof panels or soundproof chambers to block noise transmission. While soundproof panels effectively block noise, they suffer from poor heat dissipation, potentially leading to heat buildup that can interfere with the normal operation of the cooling fan. Furthermore, soundproofing materials are prone to aging and failure under high temperatures, resulting in high maintenance costs. Soundproof chambers, on the other hand, occupy excessive space and are difficult to install. Therefore, developing a gas engine fan structure that combines efficient noise reduction with convenient installation has become a pressing technical challenge in the industry.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Existing technologies use soundproof panels and soundproof chambers to reduce noise in cooling fans, which may affect the normal operation of the cooling fans and is inconvenient to install. In order to solve the problems of inconvenient installation and impact on heat dissipation in existing technologies, this application proposes a design that includes a sound-absorbing cylinder, an output cylinder, and a soundproof shell. The sound-absorbing cylinder is placed over the cooling fan to absorb noise, and the noise is divided into three parts by the cooperation of the soundproof shell, guide tube, and output cylinder to reduce the noise. Finally, the reduced noise is discharged by the output cylinder. Moreover, since the output cylinder has venting holes, it will not affect normal heat dissipation, thus achieving the effect of guiding and weakening the noise and finally discharging it. Utility Model Content

[0005] To address the problems of inconvenient installation and reduced heat dissipation of noise reduction components in existing technologies, this application provides a noise reduction and airflow guiding structure for a gas engine fan.

[0006] This application provides a noise reduction and airflow guiding structure for a gas engine fan, which adopts the following technical solution: it includes a sound-absorbing cylinder, on which a fixing hole and a sound-diffusing groove are provided, and a sound-insulating shell is also provided on the sound-absorbing cylinder. The sound-insulating shell is provided with a circulation groove and a guide groove, and guide tubes are provided on both sides of the sound-insulating shell. Noise reduction components are provided on the guide tubes, and an output cylinder is also provided on the sound-insulating shell.

[0007] Optionally, the noise reduction component includes a fixing plate, on which a sound insulation plate and a handle are provided, and a slot is provided at the bottom of the fixing plate.

[0008] Optionally, the sound insulation panel is fixedly connected to the fixed plate, and the handles are symmetrically distributed on both sides of the fixed plate and fixedly connected to the fixed plate.

[0009] Optionally, a locking block is provided at the port of the guide tube, and the fixing plate is engaged with the guide tube through the locking groove.

[0010] Optionally, a cooling fan is provided at the center of the sound-absorbing cylinder, the cooling fan is fixedly connected to the engine, and the sound-absorbing cylinder covers the cooling fan and is fixedly connected to the engine through the fixing hole.

[0011] Optionally, the soundproof shell is fixedly connected to the sound-absorbing cylinder, and the circulation groove is arranged in a "ring" shape between the soundproof shell and the sound-absorbing cylinder.

[0012] Optionally, the guide tube is fixedly connected to both sides of the soundproof housing, and the guide groove is formed on both sides of the soundproof housing and communicates with the guide tube.

[0013] Optionally, the output cylinder is located at one end away from the sound-absorbing cylinder and is fixedly connected to the sound-insulating shell, and the output cylinder is provided with multiple diverging holes.

[0014] In summary, this application includes the following beneficial technical effects: 1. This utility model incorporates a sound-absorbing cylinder. By placing the sound-absorbing cylinder, which has a "large inlet and small outlet" design, inside the noise-reducing shell, the sound-insulating shell and guide tube divide the noise into three parts for diversion and attenuation, while the output cylinder disperses and discharges the noise. On one hand, the sound-absorbing cylinder directly covers the cooling fan, allowing it to initially absorb noise through its own sound-diffusing grooves. On the other hand, the annular circulation groove between the sound-insulating shell and the sound-absorbing cylinder forms an airflow circulation channel. Combined with the dispersing holes of the output cylinder, this allows the cooling airflow and the attenuated noise to be discharged simultaneously, achieving a synergistic unity of noise reduction and heat dissipation.

[0015] 2. This utility model has a fixing hole and a fixing plate, which allows the sound-absorbing tube to be directly fixed to the engine without the need for a complicated bracket; the fixing plate in the noise reduction component can be quickly engaged with the guide tube through the slot, and there are handles on both sides, so no professional tools are needed for disassembly and assembly, and it can be operated by a single person, achieving the effect of easy disassembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a schematic diagram showing the location of the sound-dissipating groove in an embodiment of this application; Figure 3 This is a schematic diagram of the card block structure in an embodiment of this application; Figure 4 This is a cross-sectional view of the sound-absorbing tube in an embodiment of this application; Figure 5 This is an exploded view of the soundproof shell in an embodiment of this application.

[0017] Reference numerals in the attached diagram: 1. Sound-absorbing tube; 2. Soundproof shell; 3. Output tube; 4. Fixing plate; 5. Soundproof board; 6. Fixing hole; 7. Sound diffusion groove; 8. Cooling fan; 9. Handle; 10. Locking block; 11. Guide groove; 12. Diffusion hole; 13. Circulation groove; 14. Guide tube; 15. Slot. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-5 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0019] This application discloses a noise reduction and airflow guiding structure for a gas engine fan. For example... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, it includes a sound-absorbing cylinder 1, which has a fixing hole 6 and a sound-diffusing groove 7. The sound-absorbing cylinder 1 is also provided with a sound-insulating shell 2, which has a circulation groove 13 and a guide groove 11. The sound-insulating shell 2 is provided with guide tubes 14 on both sides, and noise reduction components are provided on the guide tubes 14. The sound-insulating shell 2 is also provided with an output cylinder 3.

[0020] See Figure 1 , Figure 2 , Figure 5 The noise reduction component includes a fixing plate 4 for supporting the sound insulation component. The inner side wall of the fixing plate 4 is provided with a sound insulation plate 5 for directly blocking the noise inside the guide tube 14. The two end faces of the fixing plate 4 are provided with handles 9 for easy disassembly and assembly. The bottom end face of the fixing plate 4 is provided with a slot 15 for quick connection with the guide tube 14.

[0021] Please see Figure 1 , Figure 2 , Figure 5 The sound insulation plate 5 is fixedly connected to the side of the fixed plate 4 facing the inside of the guide tube 14 by adhesive bonding, ensuring that the sound insulation plate 5 and the fixed plate 4 are firmly connected and preventing the sound insulation plate 5 from shifting due to vibration when the cooling fan 8 is running; the handles 9 are symmetrically distributed on both sides of the fixed plate 4, and the handles 9 and the fixed plate 4 are fixedly connected by welding, ensuring that the force is applied evenly during disassembly and assembly, and further improving the ease of operation.

[0022] Please see Figure 3 , Figure 4 , Figure 5 The guide tube 14 has an integrally formed card block 10 at the port away from the sound insulation shell 2, which is adapted to the card slot 15. The fixing plate 4 can be quickly assembled and disassembled with the guide tube 14 by the card slot 15 and the card block 10 engaging.

[0023] Please see Figure 2 , Figure 4 The central axis of the sound-absorbing cylinder 1 coincides with the central axis of the radiator fan 8. The radiator fan 8 is fixedly connected to the engine's preset mounting position by bolts. The large end opening size of the sound-absorbing cylinder 1 is larger than the outer diameter of the radiator fan 8, ensuring that the large end can completely cover the radiator fan 8 to contain the operating noise. The sound-absorbing cylinder 1 is bolted to the engine through the fixing hole 6, so that the entire structure forms a stable whole with the engine, avoiding structural vibration and additional noise when the radiator fan 8 is running at high speed.

[0024] Please see Figure 3 , Figure 4 The soundproof shell 2 is fixed to the outside of the sound-absorbing cylinder 1 by welding. The circulation groove 13 is arranged in a "ring" shape around the sound-absorbing cylinder 1. One end of the circulation groove 13 is connected to the outer space of the large end of the sound-absorbing cylinder 1, and the other end is connected to the inside of the output cylinder 3. It is used to guide part of the heat dissipation airflow to circulate. At the same time, the noise after the initial treatment by the sound-absorbing cylinder 1 is reduced again by the blocking effect of the soundproof shell 2.

[0025] Please see Figure 2 , Figure 4 , Figure 5 The axis of the guide tube 14 is consistent with the radial direction of the soundproof housing 2, and the inner diameter of the guide tube 14 is adapted to the width of the guide groove 11. The guide groove 11 is opened in the middle of both sides of the soundproof housing 2, and one end of the guide groove 11 penetrates the inner wall of the soundproof housing 2 and communicates with the internal space of the soundproof housing 2, and the other end penetrates the outer wall of the soundproof housing 2 and communicates with the internal channel of the guide tube 14, so that some of the noise and heat dissipation airflow inside the soundproof housing 2 can be directed into the guide tube 14, and the noise reduction component can achieve the third noise reduction.

[0026] Please see Figure 4 , Figure 5 The output cylinder 3 is cylindrical in shape. It is fixedly connected to the end of the soundproof shell 2 away from the sound-absorbing cylinder 1 by welding or flange. The internal channel of the output cylinder 3 is connected to the internal space of the soundproof shell 2, the circulation groove 13 and the channel of the guide pipe 14. It is used to gather the noise and heat dissipation airflow after multiple noise reductions. Multiple diverging holes 12 are evenly opened on the peripheral wall of the output cylinder 3 and are distributed at intervals along the axial and circumferential directions of the output cylinder 3. They are used to disperse the concentrated noise into multiple weak noises and discharge them.

[0027] The implementation principle of the noise reduction and airflow guiding structure for a gas engine fan in this embodiment is as follows: When the radiator fan 8 of the gas engine operates at high speed, noise and cooling airflow are generated first. The conical sound-absorbing cylinder 1, which covers the outside of the radiator fan 8, directly absorbs part of the operating noise through its own material and the sound-diffusing grooves 7, completing the "initial attenuation" of the noise. The cooling airflow generated by the radiator fan 8 flows directionally with the "large inlet, small outlet" conical structure of the sound-absorbing cylinder 1, avoiding additional noise caused by airflow turbulence, and preparing for subsequent diversion. The noise and airflow, after being initially treated by the sound-absorbing cylinder 1, enter the interior of the soundproof shell 2, starting the "diversion and weakening" stage. First diversion: The annular circulation groove 13 between the soundproof shell 2 and the sound-absorbing cylinder 1 forms an independent airflow channel. Part of the noise and airflow flows along the circulation groove 13, and is further blocked by the soundproof shell 2 during the process, achieving "secondary noise reduction". The second branch: The remaining noise and airflow pass through the guide grooves 11 on both sides of the soundproof shell 2 and enter the guide tube 14 that is connected to them. At this time, the noise reduction components on the guide tube 14, which are engaged by the slots 15 and the blocks 10, will block and absorb the noise in the tube for the third time, further weakening the noise intensity. After two branching and multiple noise reductions, the noise and the heat dissipation airflow finally converge to the output tube 3. The radiating hole 12 disperses the concentrated noise into multiple weak noise streams and discharges them, completing the "final treatment and discharge".

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A noise reduction and airflow guiding structure for a gas engine fan, comprising a sound-absorbing tube (1), characterized in that: The sound-absorbing cylinder (1) is provided with a fixing hole (6) and a sound-diffusing groove (7). The sound-absorbing cylinder (1) is also provided with a sound-insulating shell (2). The sound-insulating shell (2) is provided with a circulation groove (13) and a guide groove (11). The sound-insulating shell (2) is provided with guide tubes (14) on both sides. The guide tubes (14) are provided with noise reduction components. The sound-insulating shell (2) is also provided with an output cylinder (3).

2. The noise reduction and airflow guiding structure for a gas engine fan according to claim 1, characterized in that: The noise reduction component includes a fixing plate (4), on which a sound insulation plate (5) and a handle (9) are provided, and a slot (15) is provided at the bottom of the fixing plate (4).

3. The noise reduction and airflow guiding structure for a gas engine fan according to claim 2, characterized in that: The sound insulation board (5) is fixedly connected to the fixed plate (4), and the handle (9) is symmetrically distributed on both sides of the fixed plate (4) and fixedly connected to the fixed plate (4).

4. The noise reduction and airflow guiding structure for a gas engine fan according to claim 2, characterized in that: The guide tube (14) has a locking block (10) at its port, and the fixing plate (4) is engaged with the guide tube (14) through the slot (15).

5. The noise reduction and airflow guiding structure for a gas engine fan according to claim 4, characterized in that: The sound-absorbing cylinder (1) has a cooling fan (8) at its center. The cooling fan (8) is fixedly connected to the engine. The sound-absorbing cylinder (1) is cone-shaped, and the large mask is on the cooling fan (8) and fixedly connected to the engine through the fixing hole (6).

6. The noise reduction and airflow guiding structure for a gas engine fan according to claim 1, characterized in that: The soundproof shell (2) is fixedly connected to the sound-absorbing cylinder (1), and the circulation groove (13) is arranged in a "ring" shape between the soundproof shell (2) and the sound-absorbing cylinder.

7. The noise reduction and airflow guiding structure for a gas engine fan according to claim 1, characterized in that: The guide tube (14) is fixedly connected to both sides of the soundproof shell (2), and the guide groove (11) is opened on both sides of the soundproof shell (2) and communicates with the guide tube (14).

8. The noise reduction and airflow guiding structure for a gas engine fan according to claim 1, characterized in that: The output cylinder (3) is located at one end away from the sound-absorbing cylinder (1) and is fixedly connected to the sound insulation shell (2). The output cylinder (3) is provided with a plurality of diverging holes (12).

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