Ventilation and heat dissipation structure of a generator set

Abstract

The utility model discloses a generator set ventilation and heat dissipation structure, including box and generator assembly, the generator assembly includes generator and engine, the outside of generator is equipped with first fairing, the engine includes cylinder body, cylinder head and shell, and the rear end of engine is equipped with muffler, and the muffler has the cover, the right lower side of engine shell is installed with first fairing, and the left upper side is installed with second fairing, and the lower side of shell is installed with oil pan, and forms first heat dissipation air duct, second heat dissipation air duct and third heat dissipation air duct respectively. The utility model discloses through multi -air channel design, can good heat dissipation of cylinder head, the lateral wall etc. of generator assembly is targeted, can each part of generator is evenly heat dissipation, and the airflow flow direction is definite, and the heat dissipation effect is better and more uniform, and the heat dissipation effect of generator has been improved.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation structure technology for generator sets, and in particular to a ventilation and heat dissipation structure for generator sets. Background Technology

[0002] Generator sets are generally powered by gasoline engines, which transfer mechanical energy to generators, which then convert it into electrical energy for use by electrical equipment. However, current generator sets typically rely solely on cooling fans for heat dissipation. The airflow generated by these fans blows across the generator set haphazardly, carrying away heat from its surface. This lack of targeting results in poor cooling of the generator's main heat-generating components, leading to uneven heat dissipation and ineffective airflow compensation for cooling. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a ventilation and heat dissipation structure for generator sets, so as to solve the problem of poor heat dissipation of existing generator sets.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A generator set ventilation and heat dissipation structure includes a housing and a generator assembly installed in the housing. The generator assembly includes a generator near the front end of the housing and an engine near the rear end of the housing. The front end of the housing has an air inlet, and the rear end has an air outlet. The generator has a first air guide shroud on its outer side, and the front end of the first air guide shroud has a cooling fan opposite to the air inlet. The engine includes a cylinder block, a cylinder head, and a housing, wherein the cylinder head is located on the upper right side of the cylinder block, and the front end of the housing is connected to the rear end of the first air guide shroud. The rear end of the engine has a muffler opposite to the air outlet. The muffler has an outer cover, and the back plate of the outer cover has a first heat dissipation hole, which is connected to the engine housing. A first guide vane is installed on the lower right side of the engine housing, a second guide vane is installed on the upper left side, and an oil pan is installed on the lower side of the housing. The first guide vane, the second guide vane, and the oil pan all have gaps between themselves and the engine housing, forming a first cooling duct, a second cooling duct, and a third cooling duct, respectively. One end of the first cooling duct, the second cooling duct, and the third cooling duct is connected to the first guide vane, and the other end is connected to the muffler cover.

[0005] As an optimization, the first guide shroud is formed with a first guide portion, a second guide portion, and a third guide portion respectively facing the first heat dissipation air duct, the second heat dissipation air duct, and the third heat dissipation air duct, as well as a fourth guide portion facing the cylinder head, so that the air drawn in by the cooling fan from the air inlet can flow into the first heat dissipation air duct through the first guide portion, into the second heat dissipation air duct through the second guide portion, into the third heat dissipation air duct through the third guide portion, and into the cylinder head through the fourth guide portion.

[0006] As an optimization, a second air deflector is provided on the lower left side of the back plate of the outer cover, near the engine. The second air deflector is located at the lower part of the back plate and is close to both sides of the back plate, respectively, with the first heat dissipation hole. A second heat dissipation hole is provided on the back plate inside the second air deflector, and the second heat dissipation hole is located on the side of the second air deflector close to the first heat dissipation hole. The edge of the second air deflector is connected to the engine housing, the second air deflector plate, and the oil pan, forming a closed air deflector cavity. The second and third heat dissipation air ducts are connected to the air deflector cavity.

[0007] As an optimization, a through hole is provided on the side wall of the engine housing corresponding to the position below the cylinder head. The first heat dissipation air duct is connected to the through hole, so that air can flow out through the through hole and converge with the air flowing through the cylinder head before flowing out through the first heat dissipation hole.

[0008] As an optimization, the outer cover of the muffler has an open structure, and the open structure is a contracting structure, so that the sidewall of the open side of the outer cover forms a flow guiding slope.

[0009] As an optimization, a heat dissipation mesh is also provided on the opening side of the outer casing.

[0010] As an optimization, multiple cooling fins are provided on the lower right side of the engine casing, directly opposite the first air deflector.

[0011] As an optimization, the enclosure includes a front panel, a rear panel, a left panel, a right panel, a bottom plate, and a top plate. The front panel and the rear panel are respectively provided with the air inlet and the air outlet, and the left panel and the right panel are both provided with side air inlets. The bottom plate is provided with a battery cooling vent and an air filter cooling vent, which are respectively directly opposite the battery assembly and the air filter assembly mounted on the bottom plate.

[0012] As an optimization, an inverter is provided between the cooling fan and the front shroud, with the inverter facing the air inlet, and an auxiliary cooling vent is provided on the bottom plate facing the inverter.

[0013] Compared with the prior art, the present invention has the following advantages: Through a multi-channel design, effective heat dissipation can be achieved for the generator, engine cylinder head, outer wall, and bottom. By guiding the airflow, the airflow through the multi-channel channels flows through the heat sink of the engine rear cover to dissipate heat at the rear of the engine. At the same time, the airflow converges at the muffler cover, further enhancing the muffler's heat dissipation. It is evident that this invention can uniformly dissipate heat to all parts of the generator, with a clear airflow direction and better, more uniform heat dissipation effect, thus improving the heat dissipation performance of the generator components. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a bottom view of the present invention; Figure 4 This is a schematic diagram of the structure of one side of the cylinder head of this utility model; Figure 5 for Figure 2 Sectional view of AA; Figure 6 for Figure 2 BB section view; Figure 7 for Figure 2 CC section view; Figure 8 for Figure 2 DD section view; Figure 9 for Figure 2 EE section view; Figure 10 This is a schematic diagram of the structure of the backplate near the engine side in this utility model; In the diagram: 1. Housing, 2. Generator assembly, 3. Air inlet, 4. Cooling fan, 5. Muffler, 6. Cylinder head, 7. First air guide plate, 701. First cooling duct, 8. Second air guide plate, 801. Second cooling duct, 9. Oil pan, 901. Third cooling duct, 10. First air guide cover, 1001. First air guide section, 1002. Second air guide section, 1003. Third air guide section, 1004. Fourth air guide section, 11. Engine rear end cover, 12. Heat sink, 13. Back plate, 14. First heat dissipation hole, 15. Second heat dissipation hole, 16. Through hole, 17. Muffler cover, 18. Air guide slope, 19. Heat dissipation fin, 20. Side air inlet, 21. Battery heat dissipation vent, 22. Air filter heat dissipation vent, 23. Inverter auxiliary heat dissipation vent, 24. Second air guide cover. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example: See Figures 1-10 , A generator set ventilation and heat dissipation structure includes a housing 1 and a generator assembly 2 installed in the housing 1. The generator assembly 2 includes a generator near the front end of the housing 1 and an engine near the rear end of the housing 1. The front end of the housing 1 is provided with an air inlet 3, and the rear end is provided with an air outlet. Specifically, the housing 1 includes a front panel, a rear panel, a left panel, a right panel, a bottom plate, and a top plate. The front panel and the rear panel are respectively provided with the air inlet 3 and the air outlet. The left panel and the right panel are each provided with a side air inlet 203. The bottom plate is provided with a battery cooling vent 21 and an air filter cooling vent 22, which are respectively directly opposite the battery assembly and the air filter assembly installed on the bottom plate.

[0019] The generator has a first air deflector 10 on its outer side, and the front end of the first air deflector 10 has a cooling fan 4 opposite to the air inlet 3. The engine includes a cylinder block, a cylinder head 6, and a housing, wherein the cylinder head 6 is located on the upper right side of the cylinder block, and the front end of the housing is connected to the rear end of the first air deflector 10. The rear end of the engine has a muffler 5 opposite to the air outlet, and the muffler 5 has an outer cover. The back plate 13 of the outer cover (i.e., the vertical plate near the engine side) has a first heat dissipation hole 14, and the engine housing is connected to the first heat dissipation hole 14. In practice, the engine housing protrudes to form a guide ring corresponding to the position of the first heat dissipation hole 14, and the guide ring is disposed outside the first heat dissipation hole 14 and is sealed to the back plate.

[0020] Specifically, a first guide vane 7 is installed on the lower right side of the engine housing, a second guide vane 8 is installed on the upper left side, and an oil pan 9 is installed on the lower side of the housing. The first guide vane 7, the second guide vane 8, and the oil pan 9 all have gaps between themselves and the engine housing, and are sealed to the engine housing on both sides, forming a first cooling duct 701, a second cooling duct 801, and a third cooling duct 901 between themselves and the engine housing. One end of each of the first cooling duct 701, the second cooling duct 801, and the third cooling duct 901 is connected to the first air deflector 10, and the other end is connected to the muffler cover 17. The first air guide shroud 10 is formed with a first air guide portion 1001, a second air guide portion 1002, and a third air guide portion 1003 respectively facing the first heat dissipation air duct 701, the second heat dissipation air duct 801, and the third heat dissipation air duct 901, and a fourth air guide portion 1004 facing the cylinder head 6, so that the air drawn in by the cooling fan 4 from the air inlet 3 can flow into the first heat dissipation air duct 701 through the first air guide portion 1001, into the second heat dissipation air duct 801 through the second air guide portion 1002, into the third heat dissipation air duct 901 through the third air guide portion 1003, and into the cylinder head 6 through the fourth air guide portion 1004. In one embodiment, the first guide section 1001, the second guide section 1002, and the third guide section 1003 are all air outlets provided on the first guide shroud, and these air outlets are located on the outside of the engine housing. The ends of the first guide plate 7, the second guide plate 8, and the oil pan 9 are sealed to the first guide shroud, and the corresponding air outlets are enclosed in the first cooling duct 701, the second cooling duct 801, and the third cooling duct 901. Thus, when the cooling fan 4 is working, fresh cooling air drawn in from the air inlet 3 enters the first guide shroud 10 and flows through each guide section to the cylinder head 6, the first, second, and third cooling ducts 901, respectively, dissipating heat from the cylinder head 6, the lower right sidewall, the upper left sidewall, and the bottom of the engine. Multiple cooling ribs 19 are provided on the lower right side of the engine housing, directly opposite the first guide plate 7, to improve the heat dissipation effect. The first guide shroud 10 is fastened to the outside of the generator, and the airflow flowing through the first guide shroud 10 dissipates heat from the generator.

[0021] This invention, through its multi-channel design, can effectively dissipate heat from the generator, the cylinder head 6 of the engine, and the outer wall. By guiding the airflow, the airflow from the multi-channel system flows through the heat sink 12 of the engine's rear cover 11 to dissipate heat from the rear of the engine. At the same time, the structural design of the final airflow converging at the muffler cover 17 further enhances the heat dissipation of the muffler 5. It is evident that this invention can uniformly dissipate heat from all parts of the generator, with a clear airflow direction and better and more uniform heat dissipation effect, thereby improving the heat dissipation effect of the generator assembly 2.

[0022] A second air deflector 24 is provided on the lower left side of the back plate 13 of the outer casing, near the engine. The second air deflector 24 is located at the lower part of the back plate 13 and is close to both sides of the back plate 13, respectively, along with the first heat dissipation hole 14. A second heat dissipation hole 15 is provided on the back plate 13 inside the second air deflector 24, and the second heat dissipation hole 15 is located on the side of the second air deflector 24 close to the first heat dissipation hole 14. The edge of the second air deflector 24 is connected to the engine housing (rear end cover), the second air deflector plate 8 (end face), and the oil pan 9 (section), forming a closed air deflector cavity. The second heat dissipation duct 801 and the third heat dissipation duct 901 are connected to the air deflector cavity. Specifically, the second air deflector 24 is directly opposite the engine rear cover 11 of the engine housing, and three sets of heat dissipation units are provided on the part of the engine rear cover 11 located inside the second air deflector. Each set of heat dissipation units includes multiple heat dissipation fins 12 arranged in parallel with each other. The heat dissipation fins 12 of the three sets of heat dissipation units are radially distributed on the engine rear cover 11, so that the airflow of the second heat dissipation duct 801 and the third heat dissipation duct 901 can flow through each heat dissipation fin 12 to dissipate heat from the engine rear cover 11.

[0023] A through hole 16 is provided on the side wall of the engine housing corresponding to the position below the cylinder head 6. The first cooling duct 701 is connected to the through hole 16, allowing air to flow out through the through hole 16 and converge with the air flowing through the cylinder head 6 before flowing out through the first cooling hole 14. Under the guidance of the first guide plate 7, the airflow in the first cooling duct 701 flows from the through hole 16 below the cylinder head 6 to the rear side of the cylinder head 6 and converges with the airflow flowing through the cylinder head 6. Then it flows out through the first cooling hole 14 on the back plate 13. Since the first cooling hole 14 is directly opposite the cylinder head 6 and its size is large, the flow rate and velocity of this airflow are both large, which can ensure rapid cooling and heat dissipation of the main heat-generating components (cylinder head 6). The airflow in the second cooling duct 801 flows from the left through the gap between the second guide plate 8 and the second guide shroud 24 into the gap between the back plate 13 and the engine rear cover 11. The airflow in the third cooling duct 901 flows from the bottom through the gap between the oil pan 9 and the second guide shroud 24 into the gap between the back plate 13 and the engine rear cover 11, and finally converges at the second cooling hole 15 and flows out, thus playing a better auxiliary role.

[0024] The outer casing of the muffler 5 has an open structure, meaning that the side of the outer casing facing away from the back plate has an opening, and this opening structure is a converging structure, forming a guide slope 18 on the side wall of the open side of the outer casing. This causes the airflow from the first heat dissipation hole 14 and the second heat dissipation hole 15 to be deflected towards the muffler 5 by the guide slope 18. A heat dissipation mesh is also provided on the open side of the outer casing. This is because the cylinder head 6 is the main heat-generating part of the generator; therefore, the first heat dissipation hole 14 is directly opposite the cylinder head 6, allowing the airflow to flow towards the muffler 5 more quickly and then be discharged, effectively carrying away heat. Simultaneously, this structural layout allows the airflow to flow at a higher velocity towards the guide slope 18 of the second heat dissipation casing, and under its influence, it is redirected towards the muffler 5, effectively flowing through the muffler 5 and carrying away its heat, thus improving the heat dissipation effect.

[0025] An inverter is installed between the cooling fan 4 and the front enclosure, directly facing the air inlet 3. An auxiliary cooling vent 23 for the inverter is also located on the base plate, directly opposite the inverter. This allows the cooling fan 4 to directly cool the inverter by drawing air in. Furthermore, due to space limitations at the bottom of the front enclosure, the bottom of the inverter cannot receive adequate cooling. Therefore, the auxiliary cooling vent on the base plate directly cools the bottom of the inverter, resulting in better heat dissipation.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A ventilation and heat dissipation structure for a generator set, comprising a housing and a generator assembly installed in the housing, the generator assembly including a generator near the front end of the housing and an engine near the rear end of the housing; the front end of the housing is provided with an air inlet, and the rear end is provided with an air outlet; a first air guide is provided on the outside of the generator, and the front end of the first air guide has a cooling fan opposite to the air inlet; the engine includes a cylinder block, a cylinder head, and a housing, wherein... The cylinder head is located on the upper right side of the cylinder block, and the front end of the outer casing is connected to the rear end of the first air deflector; the rear end of the engine is provided with a muffler opposite to the air outlet, the muffler has an outer cover, and the back plate of the outer cover is provided with a first heat dissipation hole, the engine casing is connected to the first heat dissipation hole; characterized in that: A first guide vane is installed on the lower right side of the engine housing, a second guide vane is installed on the upper left side, and an oil pan is installed on the lower side of the housing. The first guide vane, the second guide vane, and the oil pan all have gaps between themselves and the engine housing, forming a first cooling duct, a second cooling duct, and a third cooling duct, respectively. One end of the first cooling duct, the second cooling duct, and the third cooling duct is connected to the first guide vane, and the other end is connected to the muffler cover.

2. The generator set ventilation and heat dissipation structure according to claim 1, characterized in that: The first air guide shroud has a first air guide portion, a second air guide portion, and a third air guide portion respectively facing the first, second, and third heat dissipation air ducts, as well as a fourth air guide portion facing the cylinder head. This allows the air drawn in by the cooling fan from the air inlet to flow into the first heat dissipation air duct through the first air guide portion, into the second heat dissipation air duct through the second air guide portion, into the third heat dissipation air duct through the third air guide portion, and towards the cylinder head through the fourth air guide portion.

3. The generator set ventilation and heat dissipation structure according to claim 1, characterized in that: A second air deflector is provided on the lower left side of the back plate of the outer cover, near the engine. The second air deflector is located at the lower part of the back plate and is close to both sides of the back plate, respectively, along with the first heat dissipation hole. A second heat dissipation hole is provided on the back plate inside the second air deflector, and the second heat dissipation hole is located on the side of the second air deflector close to the first heat dissipation hole. The edge of the second air deflector is connected to the engine housing, the second air deflector plate, and the oil pan, forming a closed air deflector cavity. The second and third heat dissipation air ducts are connected to the air deflector cavity.

4. The generator set ventilation and heat dissipation structure according to claim 3, characterized in that: The engine housing has a through hole on the side wall corresponding to the position below the cylinder head. The first heat dissipation air duct is connected to the through hole, so that air can flow out through the through hole and converge with the air flowing through the cylinder head before flowing out through the first heat dissipation hole.

5. The generator set ventilation and heat dissipation structure according to claim 1, characterized in that: The muffler's outer casing has an open structure, and this open structure is a contracting structure, so that the sidewall of the open side of the outer casing forms a flow guiding slope.

6. The generator set ventilation and heat dissipation structure according to claim 5, characterized in that: A heat dissipation mesh is also provided on the opening side of the outer casing.

7. The generator set ventilation and heat dissipation structure according to claim 1, characterized in that: On the lower right side of the engine casing, opposite the first air deflector, there are multiple cooling fins.

8. The generator set ventilation and heat dissipation structure according to claim 1, characterized in that: The enclosure includes a front panel, a rear panel, a left panel, a right panel, a bottom plate, and a top plate. The front and rear panels are respectively provided with air inlets and air outlets, and the left and right panels are each provided with side air inlets. The bottom plate is provided with a battery cooling vent and an air filter cooling vent, which are respectively directly opposite the battery assembly and air filter assembly mounted on the bottom plate.

9. The generator set ventilation and heat dissipation structure according to claim 8, characterized in that: An inverter is installed between the cooling fan and the front cladding, with the inverter facing the air inlet, and an auxiliary cooling vent is provided on the bottom plate facing the inverter.

Images