Generator set cooling structure

Abstract

The utility model discloses a generator set cooling structure. The generator set cooling structure comprises a generator assembly used for generating electricity and an engine assembly used for driving the generator assembly, the engine assembly is provided with an air guide shell and an engine body, the air guide shell is fixed to the engine body, a gap between the air guide shell and the engine body forms a first cooling air channel, and the first cooling air channel is communicated with the air guide shell. Gas flows in the first cooling air duct to cool the engine body, the generator assembly is provided with a shell and a generator, a gap between the generator body and the shell forms a second cooling air duct, and the gas flows in the second cooling air duct to cool the generator body. The air outlet end of the first cooling air duct is opposite to the air outlet end of the second cooling air duct, and a partition plate used for blocking the first cooling air duct and the second cooling air duct is installed on the engine body. The generator set cooling structure is good in cooling effect.

Description

Technical Field

[0001] This utility model relates to the field of generator cooling technology, and in particular to a generator set cooling structure. Background Technology

[0002] In modern industry and daily life, generator sets serve as crucial backup or independent power sources, widely used in hospitals, data centers, factories, and remote areas. However, the energy conversion process within a generator set inevitably generates a significant amount of heat during operation. Research indicates that a medium-power diesel generator set operating at full load can dissipate several megawatts of heat per hour. If this heat cannot be dissipated effectively and promptly, the core components of the generator set will be exposed to high temperatures. This not only severely disrupts the precise mechanical and electrical operating mechanisms within the generator set but also significantly reduces its operational stability and reliability, potentially leading to premature failure and substantial economic losses for the user. Therefore, a thorough understanding of generator set heat dissipation and optimization of the cooling system are crucial for ensuring the continuous and stable operation of generator sets, and are of great importance for improving their efficiency and extending their service life.

[0003] Currently, generator set cooling primarily employs air cooling and water cooling. Air cooling relies on a fan to generate high-speed airflow, which flows within specific ducts and directly impacts the heat-generating components of the generator set, carrying away heat through forced convection. The fan is typically mounted in a specific location on the engine or generator and is driven by the engine or motor. This cooling method offers significant advantages: its structural design is relatively simple, requiring no complex piping or cooling medium circulation systems, resulting in lower costs and ease of installation and maintenance.

[0004] For small generator sets, air cooling is an economical and practical choice; however, it also has significant limitations. For example, a patent titled "Cooling System for Variable Frequency Generator" (patent number CN201320627224.6) includes an engine, a generator, and an inverter. The generator is located between the inverter and the engine. The generator cools the exhaust gases from both the engine and the inverter by drawing in the exhaust gases, resulting in relatively high temperatures and poor heat dissipation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a generator set cooling structure that can improve the heat dissipation effect of generators and engines.

[0006] To address the aforementioned problems, this utility model provides a generator set cooling structure. The generator set cooling structure includes a generator assembly for generating electricity and an engine assembly for driving the generator assembly. The engine assembly has a guide shell and an engine body. The guide shell is fixed to the engine body, and the gap between the guide shell and the engine body forms a first cooling duct. Gas flows within the first cooling duct to cool the engine body. The generator assembly has a housing and a generator. The gap between the generator body and the housing forms a second cooling duct, and gas flows within the second cooling duct to cool the generator body. The outlet ends of the first and second cooling ducts are opposite each other. A baffle plate is installed on the engine body to block the first and second cooling ducts.

[0007] Furthermore, the partition plate is provided with a first fixing hole, and the engine body is provided with a second fixing hole. The first fixing hole and the second fixing hole are aligned, and bolts are provided in the first fixing hole and the second fixing hole to fix the partition plate and the engine body.

[0008] Furthermore, the partition is also provided with a clearance hole for the starter motor of the engine block and a through hole for the crankshaft of the engine block to pass through.

[0009] Furthermore, it also includes a muffler for noise reduction, which is mounted on the engine block, and the generator block is also provided with a baffle to block the hot air from the muffler.

[0010] Furthermore, the baffle is bent, with its lower end being vertical and its upper end being inclined.

[0011] Furthermore, a third fixing hole is provided on the baffle, and a fourth fixing hole is provided on the housing. The fourth fixing hole is aligned with the third fixing hole, and bolts are provided in the third fixing hole and the fourth fixing hole to fix the baffle and the generator body.

[0012] Furthermore, the housing includes a left shell and a right shell. The left shell is fixed to the right shell by bolts. The left shell is provided with a first positioning protrusion, and the right shell is provided with a second positioning protrusion. Both the first positioning protrusion and the second positioning protrusion are provided with screw holes. The screw holes on the first positioning protrusion and the second positioning protrusion combine to form a fourth fixing hole.

[0013] Furthermore, it also includes a frame on which the engine and generator are mounted. The frame is provided with a first anti-scalding plate, a second anti-scalding plate, and a third anti-scalding plate. The first and second anti-scalding plates are located on both sides of the engine assembly and the generator assembly, and the third anti-scalding plate is located above the engine assembly and the generator assembly.

[0014] Furthermore, holes are provided on the first, second, and third anti-scalding plates.

[0015] Furthermore, it also includes an inverter located at the air intake end of the first cooling duct.

[0016] The generator cooling structure of this utility model has baffles at the air outlets of the first and second cooling ducts to change the flow direction of the hot air discharged from the first and second cooling ducts, ensuring that the discharged hot air does not affect each other and thus ensuring the cooling effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a preferred embodiment of the generator cooling structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the cooling structure of the generator set of this utility model.

[0019] Figure 3 This is a structural diagram of the generator assembly and the engine assembly.

[0020] Figure 4 This is a schematic diagram of the partition structure.

[0021] Figure 5 This is a schematic diagram of the structure where the partition is fixed to the engine assembly.

[0022] Figure 6 This is a schematic diagram of the second fixing hole.

[0023] Figure 7 This is a schematic diagram of the baffle structure.

[0024] Figure 8 This is a schematic diagram of the baffle being installed on the housing.

[0025] Figure 9 This is a schematic diagram of the shell structure.

[0026] The meanings of the labels in the attached diagram are as follows:

[0027] Engine assembly 1, first cooling air duct 10, air guide shell 11, engine body 12, second fixing hole 14, crankshaft 15, generator assembly 2, second cooling air duct 20, shell 21, left shell 211, right shell 212, first positioning protrusion 213, second positioning protrusion 214, air inlet 215, air outlet 216, generator body 22, second air duct 23, fourth fixing hole 24, muffler 3, inverter 4, partition 5, perforation 51, first fixing hole 52, clearance hole 53, baffle 6, third fixing hole 61, frame 7, first anti-scalding plate 71, second anti-scalding plate 72, third anti-scalding plate 73. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figures 1 to 3 As shown, a preferred embodiment of the generator set cooling structure of this utility model includes an engine assembly 1, a muffler 3, a generator assembly 2, an inverter 4, a partition 5, a baffle 6, and a frame 7. The generator assembly 2 is used to generate electricity, and the generator is mounted on the frame 7, typically secured with bolts. The engine assembly 1 drives the generator assembly 2, consuming fossil fuels to generate power to drive the generator assembly 2. The engine is fixed to the frame 7. The inverter 4 converts the direct current (DC) power from the generator assembly 2 into alternating current (AC). The inverter 4 is located on the side of the engine assembly 1 away from the generator assembly 2 and is fixed to the frame 7. The partition 5 is mounted on the engine assembly 1, positioned between the engine assembly 1 and the generator assembly 2. The muffler 3 is mounted on the engine assembly 1, communicating with the exhaust of the engine assembly 1. The muffler 3 is used to reduce the noise of the exhaust from the engine assembly 1 and is located above the generator assembly 2. The baffle 6 is installed on the muffler 3 and is used to block the heat emitted by the muffler 3 from entering the generator assembly 2.

[0030] The engine assembly 1 includes an air guide housing 11, a first air duct (not shown), and an engine body 12. The air guide housing 11 is fixed to the engine body 12. The gap between the air guide housing 11 and the engine body 12 forms a first cooling air duct 10. The air inlet of the first cooling air duct 10 is located on the inverter 4 side, and the air outlet of the first cooling air duct 10 is located on the generator assembly 2 side, that is, the air outlet of the first cooling air duct 10 faces the generator assembly 2. The first cooling air duct 10 is used to cool the engine body 12. The first air duct is installed at one end of the crankshaft 15 of the engine body 12. The first air duct is located at the air inlet of the first cooling air duct 10. The engine body 12 drives the first air duct to rotate through the crankshaft 15, thereby introducing outside air into the first cooling air duct 10. The first air duct is a flywheel, or it can be a fan installed on the crankshaft 15. Since the inverter 4 is located at the air inlet of the first cooling duct 10, air near the inverter 4 will be introduced into the first cooling duct 10. That is, the air passes through the inverter 4 first and then enters the first cooling duct 10, thereby cooling the inverter 4.

[0031] The generator assembly 2 has a housing 21, a generator body 22, and a second air duct 23. The housing 21 is mounted on the engine, and the generator body 22 is connected to the crankshaft 15 of the engine. The engine drives the generator body 22 to generate electricity. The gap between the generator body 22 and the housing 21 forms a second cooling air duct 20, which is used to cool the generator body 22. The air inlet of the second cooling air duct 20 is located away from the engine, and the air outlet of the second cooling air duct 20 is located close to the engine, i.e., the air outlet of the first cooling air duct 10 is opposite to the air outlet of the second cooling air duct 20. The second air duct 23 is connected to the generator body 22 and introduces air from outside the housing 21 into the housing 21 and discharges it through the second cooling air duct 20. The second air duct 23 is a fan. The baffle 5 is located between the air outlet of the first cooling duct 10 and the air outlet of the second cooling duct 20, so that the hot air discharged from the first cooling duct 10 cannot enter the second cooling duct 20, and the hot air discharged from the second cooling duct 20 cannot enter the first cooling duct 10. The discharged hot air can only dissipate to the surroundings, ensuring the cooling effect of the engine and generator.

[0032] like Figures 4 to 6 As shown, the partition 5 is fixed to the engine block 12 by bolts. Specifically, the partition 5 is provided with through holes 51, first fixing holes 52, and clearance holes 53; the through holes 51 are for the crankshaft 15 to pass through, the clearance holes 53 are for the starter motor of the engine block 12 to pass through, the first fixing holes 52 are for the bolts to pass through, and there are four first fixing holes 52. In other embodiments, the number of first fixing holes 52 can be increased or decreased as needed; the engine block 12 is provided with second fixing holes 14, which are coaxially arranged with the first fixing holes 52, and the number of second fixing holes 14 is the same as that of first fixing holes 52. Bolts pass through the first fixing holes 52 and are screwed into the second fixing holes 14 on the engine block 12, thereby fixing the partition 5 to the engine block 12. The outer contour of the partition 5 includes an arc segment and a straight segment. The straight segment connects the two ends of the arc segment. The diameter of the arc segment is larger than the diameter of the housing 21 of the generator assembly 2. That is, the edge of the partition 5 extends beyond the edge of the housing 21 of the generator assembly 2, ensuring that the hot air discharged from the generator assembly 2 does not enter the engine.

[0033] like Figures 7 to 9As shown, the baffle 6 is provided with a third fixing hole 61 for bolt insertion, and there are two third fixing holes 61. The housing 21 is provided with a fourth fixing hole 24, the same number as the third fixing holes 61, and the fourth fixing holes 24 are aligned with the third fixing holes 61. Bolts pass through the third fixing holes 61 and are screwed into the fourth fixing holes 24, thereby fixing the baffle 6 to the housing 21. The baffle 6 is bent, so that the lower end of the baffle 6 is vertical and the upper end of the baffle 6 is inclined. The inclined upper end of the baffle 6 can guide the hot air emitted by the muffler 3 to prevent it from flowing to the air inlet of the second cooling air duct 20. The lower end of the baffle 6 is arc-shaped to facilitate adaptation to the housing 21.

[0034] The housing 21 includes a left housing 211 and a right housing 212, with the left housing 211 fixed to the right housing 212 by bolts. A first positioning protrusion 213 is provided on the body 21 of the left housing 211, and a second positioning protrusion 214 is provided on the body 21 of the right housing 212. Both the first positioning protrusion 213 and the second positioning protrusion 214 have screw holes, into which bolts are screwed to fix the left housing 211 and the right housing 212. The screw holes on the first positioning protrusion 213 and the second positioning protrusion 214 combine to form a fourth fixing hole 24, allowing only one bolt to fix the left housing 211, the right housing 212, and the baffle 6, reducing the number of parts. An air inlet 215 is provided on the right housing 212, serving as the air inlet end of the second cooling air duct 20; an air outlet 216 is provided on the left housing 211, serving as the air outlet end of the second cooling air duct 20.

[0035] The frame 7 is equipped with a first anti-scalding plate 71, a second anti-scalding plate 72, and a third anti-scalding plate 73. The first and second anti-scalding plates 71 and 72 are located on either side of the engine assembly 1 and the generator assembly 2, and the third anti-scalding plate 73 is located above the engine assembly 1 and the generator assembly 2. The first, second, and third anti-scalding plates 71, 72, and 73 are used to prevent spills and avoid accidental contact with the engine assembly 1 and the generator assembly 2. All three anti-scalding plates 71, 72, and 73 have holes to ensure that the heat emitted from the engine assembly 1 and the generator assembly 2 can dissipate while also preventing spills.

[0036] Outside cold air is introduced into the first cooling duct 10 and the second cooling duct 20 through the first and second air intake components 23 to cool the corresponding engine and generator. The heat-exchanged air is discharged from the first and second cooling ducts 10 and 20. Under the action of the baffle 5, the heat-exchanged air dissipates in all directions, preventing it from entering the first or second cooling duct, thus ensuring good heat dissipation. A baffle 6 is installed on the generator to prevent the hot air generated by the muffler from entering the second cooling duct 20, ensuring that the air entering the second cooling duct 20 is relatively cool, thereby improving the generator's cooling effect.

[0037] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A generator set cooling structure characterized by: The application relates to a generator assembly for power generation and an engine assembly for driving the generator assembly, the engine assembly having a wind guide shell fixed on an engine body, a gap between the wind guide shell and the engine body forming a first cooling air duct, gas flowing in the first cooling air duct to cool the engine body, the generator assembly having a casing and a generator body, a gap between the generator body and the casing forming a second cooling air duct, gas flowing in the second cooling air duct to cool the generator body, an air outlet end of the first cooling air duct opposite to an air outlet end of the second cooling air duct, a partition plate mounted on the engine body for blocking the first cooling air duct and the second cooling air duct.

2. The generator set cooling structure according to claim 1, characterized by: The partition plate is provided with a first fixing hole, the engine body is provided with a second fixing hole, the first fixing hole is aligned with the second fixing hole, and bolts are arranged in the first fixing hole and the second fixing hole to fix the partition plate and the engine body.

3. The generator set cooling structure according to claim 2, characterized by: The partition plate is further provided with an avoiding hole for avoiding a starting motor of the engine body and a perforation for passing a crankshaft of the engine body.

4. The generator set cooling structure of claim 1, wherein: The application further relates to a muffler for noise reduction, the muffler being mounted on the engine body, and a baffle plate provided on the generator body for blocking hot air of the muffler.

5. The generator set cooling structure of claim 4, wherein: The baffle plate is provided with a third fixing hole, the casing is provided with a fourth fixing hole, the fourth fixing hole is aligned with the third fixing hole, and bolts are arranged in the third fixing hole and the fourth fixing hole to fix the baffle plate and the generator body.

6. The generator set cooling structure of claim 4, wherein: The casing comprises a left casing and a right casing, the left casing being fixed on the right casing by bolts, the left casing being provided with a first positioning protrusion, the right casing being provided with a second positioning protrusion, screw holes being arranged on the first positioning protrusion and the second positioning protrusion, and the screw holes on the first positioning protrusion and the second positioning protrusion combining to form the fourth fixing hole.

7. The generator set cooling structure of claim 6, wherein: The application further relates to a rack, the engine body and the generator body being mounted on the rack, the rack being provided with a first anti-scalding plate, a second anti-scalding plate and a third anti-scalding plate, the first anti-scalding plate and the second anti-scalding plate being located on two sides of the engine assembly and the generator assembly, and the third anti-scalding plate being located above the engine assembly and the generator assembly.

8. The generator set cooling structure of claim 1, wherein: The first anti-scalding plate, the second anti-scalding plate and the third anti-scalding plate are all provided with holes.

9. The generator set cooling structure of claim 8, wherein: The application further relates to an inverter, the inverter being located at an air inlet end of the first cooling air duct.

10. The generator set cooling structure of claim 1, wherein: ​

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