Generator set heat dissipation structure and generator set thereof
By combining a closed structure with multiple air intake and cooling ducts, the contradiction between generator set heat dissipation and noise control is resolved, achieving efficient heat dissipation and noise reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-29
AI Technical Summary
Existing generator set cooling structures cannot balance cooling efficiency and noise control. Open-frame structures result in severe noise radiation, closed structures have low heat exchange efficiency, and semi-closed structures have poor noise suppression.
It adopts a closed structure design, combining multiple air intake ducts and multiple heat dissipation ducts. By setting multiple air intakes and air guide shrouds on the outer shell, and working with fans for heat dissipation, it forms a closed structure design, increases the air intake volume and speeds up the airflow, and improves heat dissipation efficiency.
It effectively balances the heat dissipation and noise reduction issues of generator sets, improves heat dissipation efficiency and ensures noise reduction effect, and solves the contradiction that existing technologies cannot achieve simultaneously.
Smart Images
Figure CN224300972U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of generator technology, and in particular to a generator set heat dissipation structure and a generator set thereof. Background Technology
[0002] A generator set, as a complete set of equipment that converts mechanical energy into electrical energy, consists at its core of an engine that provides mechanical energy and a generator that realizes the energy conversion. During operation, the heat-work conversion of the combustion system and the resistance loss of the generator windings simultaneously generate a large amount of heat. The continuous accumulation of this heat directly affects the equipment's working efficiency and service life. Therefore, heat dissipation performance has become one of the key indicators for measuring the reliability of generator sets.
[0003] However, the current mainstream heat dissipation solutions for generator sets face a structural contradiction between heat dissipation efficiency and noise control. For example, although open-frame heat dissipation structures achieve efficient heat dissipation through open design, they have inherent defects such as unobstructed noise radiation and susceptibility of equipment to environmental corrosion. On the other hand, closed / semi-closed heat dissipation structures improve noise reduction performance and environmental adaptability through shell design and enhance the aesthetics of the generator set, but they lead to a significant reduction in heat exchange efficiency. Fully closed heat dissipation structures prevent the unit from dissipating heat, which easily leads to heat accumulation. Semi-closed heat dissipation structures increase air intake and improve the heat dissipation effect to some extent, but their effect is limited and they still have the technical problem of poor noise suppression. Utility Model Content
[0004] The purpose of this application is to provide a generator set heat dissipation structure and a generator set thereof, so as to solve the technical problem that the existing generator sets cannot simultaneously achieve heat dissipation and noise reduction.
[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:
[0006] On the one hand, this application provides a generator set heat dissipation structure for heat dissipation and noise reduction of the generator set, including an outer shell sleeved on the outside of the generator set, an air guide shroud disposed inside the outer shell, and a fan disposed inside the air guide shroud;
[0007] A first air inlet is provided on one side of the outer casing, an air outlet is provided on the opposite side, a second air inlet is provided on the adjacent side, and a third air inlet is provided on the other adjacent side.
[0008] The air guide shroud includes an air inlet air guide shroud, a fan shroud, an engine air guide shroud, and a muffler air guide shroud arranged sequentially and connected to each other. One end of the air inlet air guide shroud is connected to the first air inlet, and the other end has a gap with the fan shroud to serve as a first air guide port. The end of the fan shroud away from the first air guide port is connected to the engine air guide shroud. The engine air guide shroud includes a cylinder head air guide shroud covering the engine cylinder head and an engine housing air guide shroud covering the outside of the engine housing. One end of the muffler air guide shroud is fixed to the engine and has a gap with the engine air guide shroud to serve as a second air guide port, and the other end is connected to the air outlet.
[0009] The fan includes a first fan disposed inside the fan cover and a second fan disposed inside the silencer air guide cover;
[0010] The first air inlet and the air inlet guide hood form a first air inlet channel; the second air inlet and the first air guide hood and the second air guide hood respectively form a second air inlet channel and a third air inlet channel; the third air inlet and the first air guide hood and the second air guide hood respectively form a fourth air inlet channel and a fifth air inlet channel.
[0011] The fan shroud, cylinder head air guide shroud, muffler air guide shroud, and air outlet form a first heat dissipation air duct, and the fan shroud, engine housing air guide shroud, muffler air guide shroud, and air outlet form a second heat dissipation air duct.
[0012] In a generator set heat dissipation structure described in this application embodiment, the engine housing air guide shroud includes an upper engine air guide shroud covering the upper side of the engine housing and a lower engine air guide shroud covering the lower side of the engine housing. Both ends of the upper engine air guide shroud and the lower engine air guide shroud are respectively connected to the fan shroud and the muffler air guide shroud.
[0013] In a generator set heat dissipation structure described in this application embodiment, the first fan and the second fan are respectively driven to both ends of the engine crankshaft.
[0014] In a generator set heat dissipation structure described in this application embodiment, the muffler air guide shroud includes a front muffler air guide shroud and a rear muffler air guide shroud that are interconnected.
[0015] A baffle plate is provided inside the front air guide shroud of the muffler, which divides the front air guide shroud of the muffler into a first area and a second area. The first area is connected to the cylinder head air guide shroud, and the second area is connected to the engine housing air guide shroud. The second fan is located in the second area. The end of the rear air guide shroud of the muffler away from the front air guide shroud of the muffler is connected to the air outlet.
[0016] In a generator set heat dissipation structure described in this application embodiment, a sealing ring is provided at the connection between the rear air guide shroud of the muffler and the air outlet. The sealing ring is used to seal the air outlet side of the rear air guide shroud of the muffler and the air outlet.
[0017] In a generator set heat dissipation structure described in this application embodiment, a sealing sponge is provided at the connection between the air inlet guide shroud and the first air inlet, and the sealing sponge is used to seal the air inlet guide shroud and the first air inlet.
[0018] In a generator set heat dissipation structure described in this application embodiment, the first air inlet is located in the lower middle part of the side of the outer casing, opposite to the lower middle part of the inverter heat sink of the generator set.
[0019] On the other hand, this application also provides a generator set, including the above-described generator set heat dissipation structure.
[0020] Compared with the prior art, the embodiments of this application have the following beneficial effects:
[0021] As can be seen from the above technical solution, the generator set heat dissipation structure and generator set provided in this application embodiment, through the outer shell fitted onto the outside of the generator set, form a closed structure design for the generator set, ensuring the noise reduction effect of the generator set. At the same time, by setting a first air inlet, a second air inlet, and a third air inlet on the outer shell, in conjunction with the air inlet guide shroud, fan shroud, engine air guide shroud, and muffler air guide shroud set inside the outer shell, a first air inlet duct, a second air inlet duct, a third air inlet duct, a fourth air inlet duct, and a fifth air inlet duct with different paths are formed, increasing the air intake of the generator set. The air inlet shroud, fan shroud, engine air inlet shroud, and muffler air inlet shroud are installed in conjunction with the generator set to form a first and second heat dissipation air duct. This allows the air entering from the duct to flow through the generator set as much as possible. Furthermore, by setting up the first and second fans, the airflow speed is increased, the heat dissipation of the generator set is accelerated, and the heat dissipation efficiency of the generator set is improved. In other words, by combining a closed structure with an optimized arrangement of multiple air inlets and multiple heat dissipation air ducts, the problems of heat dissipation and noise reduction of the generator set are effectively taken into account, solving the technical problem that existing generator sets cannot simultaneously achieve heat dissipation and noise reduction. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The drawings are not intended to be drawn to scale, and for clarity, not every component will be labeled in each drawing. The drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. Wherein:
[0023] Figure 1 This is a schematic diagram of the generator set heat dissipation structure in an embodiment of this application.
[0024] Figure 2 This is a schematic diagram of the airflow paths of the generator set heat dissipation structure in the embodiments of this application.
[0025] Figure 3 This is a schematic diagram of the installation structure of the cylinder head air guide and the air guide on the engine housing in the embodiments of this application.
[0026] Figure 4 This is a schematic diagram of the installation structure of the lower air guide shroud of the engine housing in an embodiment of this application.
[0027] Figure 5 This is a schematic diagram of the structure of the muffler air guide cover in the embodiments of this application.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1-Outer casing, 2-First air inlet, 3-Air outlet, 4-Second air inlet, 5-Third air inlet, 6-Air inlet shroud, 7-Fan shroud, 8-First air guide, 9-Cylinder head air guide, 10-Upper engine air guide, 11-Lower engine air guide, 12-Second air guide, 13-First fan, 14-Second fan, 15-Muffler front air guide, 16-Muffler rear air guide, 17-Wind deflector, 18-Sealing ring, 19-Inverter, 20-Engine housing, 21-Generator, 22-Muffler, 23-Engine cylinder head. Detailed Implementation
[0030] Currently, mainstream heat dissipation solutions for generator sets face a structural contradiction between heat dissipation efficiency and noise control. For example, while open-frame heat dissipation structures achieve efficient heat dissipation through open design, they have inherent defects such as unobstructed noise radiation and susceptibility to environmental corrosion. On the other hand, closed / semi-closed heat dissipation structures improve noise reduction performance and environmental adaptability through shell design, and enhance the aesthetics of the generator set, but they lead to a significant reduction in heat exchange efficiency. Fully closed heat dissipation structures prevent the unit from dissipating heat, which easily leads to heat accumulation. While semi-closed heat dissipation structures increase air intake and improve heat dissipation to some extent, their effect is limited, and they still have the technical problem of poor noise suppression.
[0031] In view of this, this application provides a generator set heat dissipation structure and a generator set thereof. The concept is to form a closed structure design for the generator set by using an outer shell fitted on the outside of the generator set, which ensures the noise reduction effect of the generator set. At the same time, by setting a first air inlet, a second air inlet, and a third air inlet on the outer shell, and cooperating with the air inlet guide shroud, fan shroud, engine air guide shroud, and muffler air guide shroud set inside the outer shell, a first air inlet duct, a second air inlet duct, a third air inlet duct, a fourth air inlet duct, and a fifth air inlet duct with different paths are formed, which increases the air intake of the generator set. The air inlet shroud, fan shroud, engine air inlet shroud, and muffler air inlet shroud are installed in conjunction with the generator set to form a first and second heat dissipation air duct. This allows the air entering from the duct to flow through the generator set as much as possible. Furthermore, the first and second fans are set up to accelerate the airflow speed, speed up the heat dissipation of the generator set, and improve the heat dissipation efficiency of the generator set. In other words, through the combination of a closed structure, multiple air inlets, and multiple heat dissipation air ducts, the problems of heat dissipation and noise reduction of the generator set are effectively taken into account, solving the technical problem that existing generator sets cannot simultaneously achieve heat dissipation and noise reduction.
[0032] The technical solutions of the embodiments of this application 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 application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0033] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0036] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0037] like Figures 1 to 5 As shown, in one aspect, this application provides a generator set heat dissipation structure for heat dissipation and noise reduction of the generator set, including an outer shell 1 sleeved on the outside of the generator set, an air guide shroud disposed inside the outer shell 1, and a fan disposed inside the air guide shroud. A first air inlet 2 is provided on one side of the outer shell 1, an air outlet 3 is provided on its opposite side, a second air inlet 4 is provided on its adjacent side, and a third air inlet 5 is provided on its other adjacent side.
[0038] In this embodiment, to facilitate understanding of the positions of the first air inlet 2, the second air inlet 4, the third air inlet 5, and the air outlet 3, the following is combined with... Figure 2The generator set structure is briefly described below. From left to right, the generator set includes an inverter 19, an engine, a generator 21, and a muffler 22. The first air inlet 2 is located on the left side of the outer casing 1 near the inverter 19. Specifically, the first air inlet 2 is located in the lower middle part of the left side of the outer casing 1, opposite to the lower middle part of the heat sink of the inverter 19. The air outlet 3 is located on the right side of the outer casing 1 near the muffler 22. The second air inlet 4 is located on the upper side of the outer casing 1, and the third air inlet 5 is located on the lower side of the outer casing 1. It should be noted that the terms "upper," "lower," "left," and "right" sides are all used in conjunction with the inverter 1. Figure 2 This serves as a reference standard.
[0039] The air guide shroud includes an air inlet air guide shroud 6, a fan shroud 7, an engine air guide shroud, and a muffler air guide shroud that are arranged sequentially and connected to each other.
[0040] One end of the air inlet guide shroud 6 is connected to the first air inlet 2, and the other end has a gap with the fan shroud 7 to serve as the first air guide 8. The end of the fan shroud 7 away from the first air guide 8 is connected to the engine air guide shroud. The engine air guide shroud includes a cylinder head air guide shroud 9 covering the engine cylinder head 23 and an engine housing air guide shroud covering the outside of the engine housing 20. One end of the muffler air guide shroud is fixed to the engine and has a gap with the engine air guide shroud to serve as the second air guide 12. The other end of the muffler air guide shroud is connected to the air outlet 3.
[0041] Specifically, the air inlet shroud 6 is located outside the inverter 19, the muffler shroud is located outside the generator 21 and the muffler 22, and the engine housing shroud includes an upper engine shroud 10 covering the upper side of the engine housing 20 and a lower engine shroud 11 covering the lower side of the engine housing 20. The two ends of the upper engine shroud 10 are respectively connected to the fan shroud 7 and the muffler shroud, and the two ends of the lower engine shroud 11 are respectively connected to the fan shroud 7 and the muffler shroud. It should be noted that the engine cylinder head 23 refers to the combustion chamber of the engine, which is usually one of the hottest areas of the engine. The engine housing 20 includes structures such as the crankshaft and connecting rods. The combustion chamber also transfers heat through the crankshaft and connecting rods, so the engine housing 20 is also one of the hottest areas.
[0042] The fan includes a first fan 13 disposed inside the fan cover 7 and a second fan 14 disposed inside the silencer air guide cover.
[0043] Specifically, the first fan 13 and the second fan 14 are respectively connected to the two ends of the crankshaft of the engine, so that the generator set can drive the first fan 13 and the second fan 14 to rotate during operation.
[0044] The first air inlet 2 and the air inlet guide shroud 6 form a first air inlet channel. The second air inlet 4, together with the first air guide 8 and the second air guide 12, form a second air inlet channel and a third air inlet channel, respectively. The third air inlet 5, together with the first air guide 8 and the second air guide 12, forms a fourth air inlet channel and a fifth air inlet channel, respectively. The fan shroud 7, the cylinder head guide shroud 9, the muffler guide shroud, and the air outlet 3 form a first heat dissipation channel. The fan shroud 7, the engine housing guide shroud, the muffler guide shroud, and the air outlet 3 form a second heat dissipation channel.
[0045] During the operation of the generator set, the crankshaft of the engine drives the first fan 13 and the second fan 14 to rotate, thereby drawing air from the outside of the housing 1 into the housing 1 through the first air inlet 2, the second air inlet 4, and the third air inlet 5 to form multiple airflows. The airflow from the first air inlet is used to cool the inverter 19. The airflows from the first, second, and fourth air inlets converge at the first air guide 8 and flow into the fan shroud 7. The airflow is then split at the engine air guide shroud, distributing it to the engine cylinder head 23 and the engine housing 2 respectively. The portion protected by the 0 is cooled, carrying away the heat from the engine cylinder head 23 and the protected portion of the engine housing 20. Then, it merges with the airflow from the third and fifth air intakes into the muffler shroud to cool the generator 21 and the muffler 22, carrying away their heat. Finally, it is discharged from the air outlet 3, thus achieving heat dissipation for the generator set. It should be noted that the airflow from the second, third, fourth, and fifth air intakes will also carry away some of the heat located between the shroud and the outer casing 1 before entering the shroud.
[0046] In some embodiments, the muffler air guide shroud includes a front muffler air guide shroud 15 and a rear muffler air guide shroud 16 that are interconnected. A baffle 17 is provided inside the front muffler air guide shroud 15, which divides the front muffler air guide shroud 15 into a first region and a second region. The first region is connected to the cylinder head air guide shroud 9, and the second region is connected to the engine housing air guide shroud. The second fan 14 is disposed in the second region. The end of the rear muffler air guide shroud 16 away from the front muffler air guide shroud 15 is connected to the air outlet 3.
[0047] The front air guide shroud 15 and the rear air guide shroud 16 of the muffler can be connected by fasteners such as bolts. By setting the muffler air guide shrouds including the front air guide shroud 15 and the rear air guide shroud 16, it is convenient to maintain the generator 21 and the muffler 22 inside the muffler air guide shrouds. By setting the baffle 17 inside the front air guide shroud 15, it is possible to effectively prevent the airflow in the first heat dissipation duct and the second heat dissipation duct from interfering with each other inside the front air guide shroud 15, avoiding airflow turbulence and reducing the heat dissipation effect. It should be noted that the airflow in the first heat dissipation duct and the airflow in the second heat dissipation duct converge inside the rear air guide shroud 16. Preferably, in order for the airflow in the first heat dissipation duct and the airflow in the second heat dissipation duct to better exit through the air outlet 3 after converging inside the rear air guide shroud 16, the cross-sectional area of the rear air guide shroud 16 decreases from the air inlet side end to the air outlet side end.
[0048] In some embodiments, a sealing ring 18 is provided at the connection between the rear air guide shroud 16 of the muffler and the air outlet 3. The sealing ring 18 is used to seal the air outlet side of the rear air guide shroud 16 of the muffler and the air outlet 3. By providing the sealing ring 18, the airflow in the rear air guide shroud 16 of the muffler can only be discharged to the outside of the outer shell 1 through the air outlet 3, avoiding the airflow from flowing back into the outer shell 1 from the gap between the rear air guide shroud 16 of the muffler and the air outlet 3, which would affect the heat dissipation efficiency.
[0049] In some embodiments, a sealing sponge is provided at the connection between the air inlet guide shroud 6 and the first air inlet 2. The sealing sponge is used to seal the air inlet guide shroud 6 and the first air inlet 2. By providing the sealing sponge, the air energy entering the outer casing 1 from the first air inlet 2 can only pass through the air inlet guide shroud 6, thereby improving the heat dissipation efficiency of the inverter 19.
[0050] The sealing ring 18 can be a rubber ring, which not only provides a sealing effect but also effectively reduces vibration.
[0051] In some embodiments, the first air inlet 2, the second air inlet 4, the third air inlet 5, and the air outlet 3 are all louvers. The angle between the blades of the louvers and the horizontal plane is 10° to 60°, and the front projection gap between two adjacent blades of the louvers is 0.5mm to 5mm. While meeting the requirements of air intake and exhaust volume to ensure heat dissipation efficiency, this effectively reduces the entry of external environmental factors such as rainwater and impurities into the generator set and their impact on its normal operation.
[0052] On the other hand, this application embodiment also provides a generator set, including a generator set heat dissipation structure as described above, and further including an inverter 19, an engine, a generator 21 and the muffler 22.
[0053] In summary, the generator set heat dissipation structure and generator set provided in this application embodiment, through the outer casing fitted onto the outside of the generator set, form a closed structure design, ensuring the noise reduction effect of the generator set. Simultaneously, by providing a first air inlet, a second air inlet, and a third air inlet on the outer casing, in conjunction with the air inlet guide shroud, fan shroud, engine air guide shroud, and muffler air guide shroud provided inside the outer casing, a first air inlet duct, a second air inlet duct, a third air inlet duct, a fourth air inlet duct, and a fifth air inlet duct with different paths are formed, increasing the air intake of the generator set. The air inlet shroud, fan shroud, engine air inlet shroud, and muffler air inlet shroud are installed in conjunction with the generator set to form a first and second heat dissipation air duct. This allows the air entering from the duct to flow through the generator set as much as possible. Furthermore, the first and second fans are set up to accelerate the airflow speed, speed up the heat dissipation of the generator set, and improve the heat dissipation efficiency of the generator set. In other words, through the combination of a closed structure, multiple air inlets, and multiple heat dissipation air ducts, the problems of heat dissipation and noise reduction of the generator set are effectively taken into account, solving the technical problem that existing generator sets cannot simultaneously achieve heat dissipation and noise reduction.
[0054] The above provides a detailed description of a generator set heat dissipation structure and the generator set thereof provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A generator set heat dissipation structure for heat dissipation and noise reduction of the generator set, characterized in that, It includes an outer casing fitted onto the outside of the generator set, an air guide shroud disposed inside the outer casing, and a fan disposed inside the air guide shroud; A first air inlet is provided on one side of the outer casing, an air outlet is provided on the opposite side, a second air inlet is provided on the adjacent side, and a third air inlet is provided on the other adjacent side. The air guide shroud includes an air inlet air guide shroud, a fan shroud, an engine air guide shroud, and a muffler air guide shroud arranged sequentially and connected to each other. One end of the air inlet air guide shroud is connected to the first air inlet, and the other end has a gap with the fan shroud to serve as a first air guide port. The end of the fan shroud away from the first air guide port is connected to the engine air guide shroud. The engine air guide shroud includes a cylinder head air guide shroud covering the engine cylinder head and an engine housing air guide shroud covering the outside of the engine housing. One end of the muffler air guide shroud is fixed to the engine and has a gap with the engine air guide shroud to serve as a second air guide port, and the other end is connected to the air outlet. The fan includes a first fan disposed inside the fan cover and a second fan disposed inside the silencer air guide cover; The first air inlet and the air inlet guide hood form a first air inlet channel; the second air inlet and the first air guide hood and the second air guide hood respectively form a second air inlet channel and a third air inlet channel; the third air inlet and the first air guide hood and the second air guide hood respectively form a fourth air inlet channel and a fifth air inlet channel. The fan shroud, cylinder head air guide shroud, muffler air guide shroud, and air outlet form a first heat dissipation air duct, and the fan shroud, engine housing air guide shroud, muffler air guide shroud, and air outlet form a second heat dissipation air duct.
2. The generator set heat dissipation structure according to claim 1, characterized in that, The engine housing air guide includes an upper engine air guide covering the upper side of the engine housing and a lower engine air guide covering the lower side of the engine housing. Both ends of the upper engine air guide and the lower engine air guide are respectively connected to the fan cover and the muffler air guide.
3. The generator set heat dissipation structure according to claim 1, characterized in that, The first fan and the second fan are respectively driven to both ends of the engine crankshaft.
4. The generator set heat dissipation structure according to claim 1, characterized in that, The silencer air guide shroud includes a front silencer air guide shroud and a rear silencer air guide shroud that are interconnected. A baffle plate is provided inside the front air guide shroud of the muffler, which divides the front air guide shroud of the muffler into a first area and a second area. The first area is connected to the cylinder head air guide shroud, and the second area is connected to the engine housing air guide shroud. The second fan is located in the second area. The end of the rear air guide shroud of the muffler away from the front air guide shroud of the muffler is connected to the air outlet.
5. The generator set heat dissipation structure according to claim 4, characterized in that, A sealing ring is provided at the connection between the rear air guide shroud of the muffler and the air outlet. The sealing ring is used to seal the air outlet side of the rear air guide shroud of the muffler and the air outlet.
6. The generator set heat dissipation structure according to claim 1, characterized in that, A sealing sponge is provided at the connection between the air inlet guide hood and the first air inlet, and the sealing sponge is used to seal the air inlet guide hood and the first air inlet.
7. The generator set heat dissipation structure according to claim 1, characterized in that, The first air inlet is located on the lower middle part of the side of the housing, opposite to the lower middle part of the inverter heat sink of the generator set.
8. A generator set, characterized in that, It includes a generator set heat dissipation structure as described in any one of claims 1 to 7.