Cooling and noise reduction system of single-cylinder large-displacement air-cooled diesel generator
By designing an optimized cooling noise reduction system on a single-cylinder large-displacement air-cooled diesel generator, the problems of traditional systems at high loads and high noise are solved, and more efficient cooling and noise control is achieved, which extends the equipment life and improves environmental adaptability.
Patent Information
- Application Number
- CN202420850966.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-23
AI Technical Summary
Traditional air-cooled diesel generators have low cooling efficiency at high loads or high ambient temperatures and are noisy, which affects equipment performance and environmental adaptability.
A single-cylinder large-displacement air-cooled diesel generator cooling noise reduction system was designed. By optimizing the air guide hood design and adding a double forklift slot, it ensures that the cold air is directly and efficiently introduced into the key hot spot areas of the generator, and through the carefully designed air duct system and noise reduction chamber structure, heat exchange efficiency and noise control are enhanced.
It effectively improves the cooling efficiency of the generator, avoids overheating, extends the service life of the equipment, and significantly reduces noise pollution, and improves the adaptability of the equipment in a closed or silent environment.
Smart Images
Figure CN222650065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of single-cylinder large-displacement air-cooled diesel generators, in particular to a cooling and noise reduction system for single-cylinder large-displacement air-cooled diesel generators. Background Art
[0002] In modern machinery, particularly in power generation, the efficiency and performance of generators are significantly impacted by the design and implementation of their cooling and noise reduction systems. Traditional air-cooled diesel generators generate significant heat and noise during operation, factors that not only impact efficiency but can also lead to overheating and noise pollution, impacting both the environment and the durability of the equipment. This is particularly true for air-cooled diesel generators with large single-cylinder displacements (>0.9L), which require effective cooling and noise reduction solutions to ensure performance and reliability.
[0003] Currently, most air-cooled diesel generators rely primarily on natural convection or simple fan cooling systems for cooling. These systems often fail to provide adequate cooling under high loads or high ambient temperatures. Furthermore, conventional cooling system designs often fail to adequately consider noise control, resulting in noisy generator operation, which is particularly disadvantageous in indoor environments or where quiet operation is required.
[0004] In traditional cooling systems, the introduction of cold air is often suboptimal. This air may not effectively reach critical hotspots in the generator, such as the cylinder head cavity or the cooling fins of the diesel engine block, resulting in low cooling efficiency. Furthermore, existing cooling duct designs are often simplistic, failing to effectively maximize heat exchange between the cold air and heat-generating components, thus compromising the overall thermal management of the generator.
[0005] In order to solve the above problems, an improved cooling and noise reduction system is needed. The system can effectively guide the cold air to the key hot spots of the generator and enhance the heat exchange efficiency between the cold air and the heat-generating components through a carefully designed air duct system, while reducing the operating noise and improving the overall performance and environmental adaptability of the generator. Summary of the Invention
[0006] In order to solve the above problems, the utility model provides a cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator, which can effectively solve the deficiencies in the prior art.
[0007] The utility model is realized by the following technical solutions: a cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator, comprising:
[0008] The chassis is divided into an exhaust heat dissipation area noise reduction chamber, a working area, and a front cold air inlet noise reduction area. The diesel engine and the generator are installed in the working area. The top of the diesel engine is a cylinder head. The diesel engine and the generator are arranged side by side;
[0009] The first-stage muffler and the second-stage muffler are both installed in the noise reduction chamber of the exhaust heat dissipation area. The top of the noise reduction chamber of the exhaust heat dissipation area is a hot air exhaust mesh plate. The hot air from the diesel engine and generator is discharged to the outside of the chassis through the hot air exhaust mesh plate.
[0010] A front panel partition is provided between the working area and the front panel cold air inlet noise reduction area, and the outside cold air enters from the front panel cold air inlet noise reduction area. The cold air entering from the front panel cold air inlet noise reduction area partially passes through the cold air outlet of the engine oil pan, removes the heat from the bottom of the diesel engine, and is discharged from the heat dissipation cavity of the oil pan at the bottom of the diesel engine.
[0011] The air enters the cold air inlet from the diesel engine cylinder radiator to take away the heat inside the diesel engine and then enters the exhaust pipe heat dissipation and noise reduction air duct box. It also takes away the heat on the cylinder head and then flows into the exhaust pipe heat dissipation and noise reduction air duct box.
[0012] The exhaust pipe heat dissipation and noise reduction air duct box is communicated with the exhaust heat dissipation area noise reduction chamber, and the hot air that converges into the exhaust pipe heat dissipation and noise reduction air duct box is discharged after passing through the exhaust heat dissipation area noise reduction chamber.
[0013] As an optimal technical solution, the generator has a motor air inlet cover, through which external cold air enters the generator and takes away the heat of the generator, and is then discharged through the motor fan heat dissipation outlet at the output end of the generator into the exhaust pipe heat dissipation and noise reduction air duct box.
[0014] As an optimal technical solution, a motor noise reduction air inlet is provided at the bottom of the motor air inlet cover, and the motor noise reduction air inlet is communicated with the air inlet end of the generator. A rear forklift slot noise reduction air inlet is provided on the outside of the motor air inlet cover, and external cold air enters the motor noise reduction air inlet through the rear forklift slot noise reduction air inlet.
[0015] As an optimal technical solution, a front forklift tank heat dissipation outlet is set outside the oil pan heat dissipation cavity. After the cold air from the bottom of the diesel engine takes away the heat, it enters the front forklift tank heat dissipation outlet through the oil pan heat dissipation cavity and is discharged to the outside.
[0016] As an optimal technical solution, a high-temperature exhaust hose is provided on one side of the cylinder head at the output end of the diesel engine. The high-temperature exhaust hose is arranged in the exhaust pipe heat dissipation and noise reduction air duct box. The diesel engine also has a diesel engine intake pipe.
[0017] As an optimal technical solution, the front enclosure cold air inlet noise reduction zone is inlet with cold air from four directions, including the front enclosure left and right side cold air inlet cavities, the chassis front cold air inlet and the noise reduction air inlet plate. The cold air enters the front enclosure cold air inlet noise reduction zone from the front enclosure left and right side cold air inlet cavities, the chassis front cold air inlet and the noise reduction air inlet plate.
[0018] As an optimal technical solution, a secondary noise reduction cavity for cold air inlet is also provided in the cold air noise reduction area of the front enclosure. The cold air entering through the left and right side cold air inlet cavities of the front enclosure, the front cold air port of the chassis and the noise reduction air inlet plate enters the secondary noise reduction cavity and then enters the diesel engine.
[0019] As a preferred technical solution, the diesel engine has an air guide cover, and the cold air discharged through the secondary noise reduction cavity enters the air guide cover.
[0020] As an optimal technical solution, a side channel for increasing the exhaust volume is formed on the side of the diesel engine. The cold air takes away the heat from the side of the diesel engine and then flows into the exhaust pipe heat dissipation and noise reduction air duct box.
[0021] As a preferred technical solution, an electrical control cabinet is also provided on the chassis.
[0022] The beneficial effects of the present invention are as follows: the cooling and noise reduction system of the single-cylinder, large-displacement air-cooled diesel generator adopted by the present invention optimizes the design of the air guide cover and adds a multi-purpose double forklift slot, so that the cold air can be directly and efficiently introduced into the key heat-generating parts of the generator, such as the inner cavity of the cylinder head and the heat sink of the diesel engine cylinder block. Compared with the traditional cooling system, this direct cold air supply method can dissipate heat more effectively, avoid overheating of the body, and extend the service life of the generator;
[0023] Utilizing a double forklift slot noise reduction structure, the utility model effectively utilizes the principle that the length of the forklift slot increases the noise reduction effect. Through a carefully designed air duct box and noise reduction cavity structure, the noise generated during the air intake and exhaust processes is significantly reduced. In addition, by designing the air inlet and exhaust ports in different directions of the generator, the noise is further dispersed and controlled, so that the generator can effectively reduce noise pollution even in a closed environment or an environment that requires silence. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0026] Figure 2 This is a schematic diagram of the internal cross-section of the utility model Figure 1 ;
[0027] Figure 3 This is a schematic diagram of the internal cross-section of the utility model Figure 2 ;
[0028] Description of reference numerals:
[0029] 1. Exhaust heat dissipation zone noise reduction chamber; 2. First-stage muffler; 3. Exhaust pipe heat dissipation and noise reduction air duct box; 4. High-temperature exhaust hose; 5. Cylinder head; 6. Front panel; 7. Diesel engine air intake pipe; 8. Electrical control cabinet; 9. Diesel engine cylinder block cooling fin cold air inlet; 10. Front panel cold air inlet noise reduction zone; 11. Front panel cold air inlet cavities on the left and right sides; 12. Noise reduction air inlet plate; 13. Secondary cold air inlet noise reduction chamber; 14. Air guide cover; 15. Engine oil pan cold air outlet; 16. Chassis front cold air outlet; 17. Work area; 18. Oil pan heat dissipation cavity; 19. Front forklift tank heat dissipation outlet; 20. Motor fan heat dissipation outlet; 21. Motor air inlet cover; 22. Motor upper noise reduction air inlet; 23. Rear forklift tank noise reduction air inlet; 24. Secondary muffler; 100. Chassis; 200. Hot air exhaust mesh plate; 300. Diesel engine; 400. Generator. DETAILED DESCRIPTION
[0030] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.
[0031] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.
[0032] like Figure 1-Figure 3 As shown, the utility model is a single-cylinder large-displacement air-cooled diesel generator cooling and noise reduction system, comprising:
[0033] The chassis 100 is divided into an exhaust and heat dissipation area noise reduction chamber 1, a working area 17, and a front cold air inlet noise reduction area 10. The diesel engine 300 and the generator 400 are installed in the working area 17. The top of the diesel engine 300 is a cylinder head 5. The diesel engine 300 and the generator 400 are arranged side by side;
[0034] The first-stage muffler 2 and the second-stage muffler 24 are both installed in the exhaust heat dissipation zone noise reduction chamber 1. The top of the exhaust heat dissipation zone noise reduction chamber 1 is a hot gas exhaust mesh plate 200. The hot air on the diesel engine 300 and the generator 400 is discharged to the outside of the chassis 100 through the hot gas exhaust mesh plate 200.
[0035] A front panel partition 6 is provided between the working area 17 and the front panel cold air inlet noise reduction area 10, so that external cold air enters from the front panel cold air inlet noise reduction area 10. The cold air entering through the front panel cold air inlet noise reduction area 10 partially passes through the engine oil pan cold air outlet 15, removes the heat from the bottom of the diesel engine 300, and is discharged from the oil pan heat dissipation cavity 18 at the bottom of the diesel engine 300.
[0036] The air enters the cold air inlet 9 of the diesel engine 300 cylinder cooling fin and takes away the internal heat of the diesel engine 300, then enters the exhaust pipe heat dissipation and noise reduction air duct box 3, and takes away the heat on the cylinder head 5, then flows into the exhaust pipe heat dissipation and noise reduction air duct box 3;
[0037] The exhaust pipe heat dissipation and noise reduction air duct box 3 is communicated with the exhaust heat dissipation area noise reduction chamber 1, and the hot air that converges into the exhaust pipe heat dissipation and noise reduction air duct box is discharged after passing through the exhaust heat dissipation area noise reduction chamber 1.
[0038] Among them, the generator 400 has a motor air inlet cover 21, and the external cold air enters the generator 400 through the motor air inlet cover 21 and takes away the heat of the generator 400, and is discharged through the motor fan heat dissipation outlet 20 at the output end of the generator 400 and enters the exhaust pipe heat dissipation and noise reduction air duct box 3.
[0039] A motor noise reduction air inlet 22 is set at the bottom of the motor air inlet cover 21, and the motor noise reduction air inlet 22 is communicated with the air inlet end of the generator 400. A rear forklift slot noise reduction air inlet 23 is set on the outside of the motor air inlet cover 21, and external cold air enters the motor noise reduction air inlet 22 through the rear forklift slot noise reduction air inlet 23.
[0040] A front forklift cooling outlet 19 is provided outside the oil pan cooling cavity 18. The cold air passing through the bottom of the diesel engine 300 takes away the heat and then enters the front forklift cooling outlet 19 through the oil pan cooling cavity 18 and is discharged to the outside.
[0041] A high-temperature exhaust hose 4 is provided on one side of the cylinder head 5 at the output end of the diesel engine 300 . The high-temperature exhaust hose 4 is arranged in the exhaust pipe heat dissipation and noise reduction air duct box 3 . The diesel engine 300 also has a diesel engine 300 intake pipe 7 .
[0042] The front enclosure cold air inlet noise reduction zone 10 is inhaled with cold air from four directions, including the front enclosure left and right side cold air inlet cavities 11, the chassis front cold air outlet 16 and the noise reduction air inlet plate 12. The cold air enters the front enclosure cold air inlet noise reduction zone 10 through the front enclosure left and right side cold air inlet cavities 11, the chassis front cold air outlet 16 and the noise reduction air inlet plate 12.
[0043] A secondary noise reduction chamber 13 for cold air is also provided in the cold air noise reduction area 10 of the front enclosure. The cold air entering through the left and right side cold air chambers 11 of the front enclosure, the front cold air port 16 of the chassis and the noise reduction air inlet plate 12 enters the secondary noise reduction chamber and then enters the diesel engine 300.
[0044] The diesel engine 300 has an air guide cover 14, and the cold air discharged through the secondary noise reduction chamber enters the air guide cover 14. A side bypass channel that increases the exhaust volume is formed on the side of the diesel engine 300. The cold air takes away the heat from the side of the diesel engine 300 and then converges into the exhaust pipe heat dissipation and noise reduction air duct box 3. An electrical control cabinet 8 is also provided on the chassis 100.
[0045] The working process is as follows:
[0046] First, external cold air enters the front dash cold air inlet noise reduction zone 10 through four air inlets in different directions. These four inlets include the front dash left and right side cold air inlet cavities 11, the chassis front cold air inlet 16, and the noise reduction air inlet plate 12 located below the electrical control cabinet 8. The cold air first enters a dedicated secondary noise reduction chamber, where the noise level is reduced, before being distributed to the diesel engine 300 and generator 400 for cooling.
[0047] To cool the diesel engine 300, cold air first enters the engine 300 through an air scoop 14, passes through the engine oil sump cold air outlet 15, and reaches the oil sump heat dissipation cavity 18, removing heat from the oil sump before being discharged through the front forklift tank heat dissipation outlet 19. Simultaneously, some of the cold air passes through the increased exhaust volume bypass duct on the side of the diesel engine 300 to assist in heat dissipation and ultimately flows into the exhaust pipe heat dissipation and noise reduction air duct box 3.
[0048] Generator 400 is cooled by a supply of external cold air through the rear forklift slot noise reduction air inlet 23 and the motor upper noise reduction air inlet 22. This cold air flows into the motor air inlet cover 21, cooling the generator 400, and is then directed through the motor fan heat dissipation outlet 20 into the exhaust pipe heat dissipation and noise reduction air duct box 3.
[0049] All hot air removed from the diesel engine 300 and generator 400 is ultimately collected in the exhaust pipe heat dissipation and noise reduction air duct box 3, where it is further noise-reduced before being discharged into the atmosphere through the hot air exhaust mesh panel 200 located at the top of the chassis 100. This design not only effectively reduces the operating temperature and noise of the equipment, but also cleverly utilizes structural design to simplify the system, enhancing overall efficiency and reliability.
[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that do not require creative effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.
Claims
1. A cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator, characterized in that ,include: A chassis (100), wherein the chassis (100) is divided into an exhaust heat dissipation zone noise reduction chamber (1), a working zone (17), and a front enclosure cold air inlet noise reduction zone (10), a diesel engine (300) and a generator (400) are installed in the working zone (17), a cylinder head (5) is provided on the top of the diesel engine (300), and the diesel engine (300) and the generator (400) are arranged side by side; A first-stage muffler (2) and a second-stage muffler (24) are both installed in an exhaust heat dissipation zone noise reduction chamber (1); the top of the exhaust heat dissipation zone noise reduction chamber (1) is a hot air exhaust mesh plate (200); hot air from the diesel engine (300) and the generator (400) is discharged to the outside of the chassis (100) through the hot air exhaust mesh plate (200); A front enclosure partition (6) is provided between the working area (17) and the front enclosure cold air inlet noise reduction area (10), and external cold air enters from the front enclosure cold air inlet noise reduction area (10). The cold air entering from the front enclosure cold air inlet noise reduction area (10) partially passes through the engine body oil pan cold air outlet (15), takes away the bottom heat of the diesel engine (300), and is discharged from the oil pan heat dissipation cavity (18) at the bottom of the diesel engine (300); One path is from the diesel engine (300) cylinder cooling fin into the cold air inlet (9) to take away the internal heat of the diesel engine (300) and then enter the exhaust pipe heat dissipation and noise reduction air duct box (3), and then take away the heat on the cylinder head (5) and then converge into the exhaust pipe heat dissipation and noise reduction air duct box (3); The exhaust pipe heat dissipation and noise reduction air duct box (3) is in communication with the exhaust heat dissipation zone noise reduction chamber (1), and the hot air that converges into the exhaust pipe heat dissipation and noise reduction air duct box is discharged after passing through the exhaust heat dissipation zone noise reduction chamber (1).
2. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: The generator (400) has a motor air inlet cover (21), and external cold air enters the generator (400) through the motor air inlet cover (21) and takes away the heat of the generator (400), and then is discharged through the motor fan heat dissipation outlet (20) at the output end of the generator (400) and enters the exhaust pipe heat dissipation and noise reduction air duct box (3).
3. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 2 is characterized in that: A motor noise reduction air inlet (22) is arranged at the bottom of the motor air inlet cover (21), and the motor noise reduction air inlet (22) is communicated with the air inlet end of the generator (400). A rear forklift slot noise reduction air inlet (23) is arranged on the outside of the motor air inlet cover (21), and external cold air enters into the motor noise reduction air inlet (22) through the rear forklift slot noise reduction air inlet (23).
4. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: A front forklift tank heat dissipation outlet (19) is arranged outside the oil pan heat dissipation cavity (18), and after the cold air at the bottom of the diesel engine (300) takes away the heat, it enters the front forklift tank heat dissipation outlet (19) from the oil pan heat dissipation cavity (18) and is discharged to the outside.
5. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: A high-temperature exhaust hose (4) is arranged on one side of the cylinder head (5) at the output end of the diesel engine (300), and the high-temperature exhaust hose (4) is arranged in an exhaust pipe heat dissipation and noise reduction air duct box (3). The diesel engine (300) also has a diesel engine (300) intake pipe (7).
6. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: The front enclosure cold air inlet noise reduction zone (10) is supplied with cold air from four directions, including the front enclosure left and right side cold air inlet cavities (11), the chassis front cold air outlet (16) and the noise reduction air inlet plate (12). The cold air enters the front enclosure cold air inlet noise reduction zone (10) through the front enclosure left and right side cold air inlet cavities (11), the chassis front cold air outlet (16) and the noise reduction air inlet plate (12).
7. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 6 is characterized in that: A secondary noise reduction chamber (13) for cold air inlet is also provided in the front enclosure cold air inlet noise reduction zone (10). Cold air entering through the left and right side cold air inlet chambers (11) of the front enclosure, the front cold air port (16) of the chassis and the noise reduction air inlet plate (12) enters the secondary noise reduction chamber and then enters the diesel engine (300).
8. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: The diesel engine (300) has an air guide cover (14), and the cold air discharged through the secondary noise reduction chamber enters the air guide cover (14).
9. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: The diesel engine (300) has a side bypass channel for increasing the exhaust air volume formed on the side thereof. The cold air passes through the side of the diesel engine (300) to take away the heat and then flows into the exhaust pipe heat dissipation and noise reduction air duct box (3).
10. The cooling and noise reduction system for a single-cylinder large-displacement air-cooled diesel generator according to claim 1 is characterized in that: An electrical control cabinet (8) is also provided on the chassis (100).