Generator set heat dissipation structure and generator set thereof

Abstract

The present application relates to the technical field of generator, in particular to a generator set heat dissipation structure and a generator set, which solves the problem that heat dissipation and noise reduction of the generator set are difficult to be considered simultaneously, and the technical scheme for solving the technical problem is mainly a generator set heat dissipation structure, which comprises a shell, a wind deflector arranged in the shell and in communication with the shell, and a silencer and a fan arranged in the wind deflector, and through cooperation of the structure, a first air inlet and a second air inlet for cold air to enter, and a first heat dissipation air duct and a second heat dissipation air duct for cold air to enter to take away heat inside the generator set and hot air to be discharged are formed; through optimization of arrangement of each air inlet and air outlet, air flow disorder is avoided, and further, through design of a closed structure, noise of the generator set is reduced. The present application realizes efficient heat dissipation of the generator set while effectively reducing noise of the generator set, and achieves the effect that the generator set has heat dissipation function and noise reduction function, is efficient, and has good performance.

Description

Technical Field

[0001] This application relates to the field of generator technology, and in particular to a generator set heat dissipation structure and the generator set thereof. Background Technology

[0002] A generator set is a device consisting of an engine and a generator that converts mechanical energy into electrical energy. The engine provides the mechanical energy, while the generator converts it into electrical energy. The generator releases a significant amount of heat when burning fuel, and internal resistance losses also cause some electrical energy to be converted into heat. Therefore, generator sets generate a considerable amount of heat during operation. To ensure stable performance and normal operation, measures such as incorporating heat dissipation structures and enhancing sealing performance are typically implemented to allow the generator set to dissipate heat effectively.

[0003] In practical applications, the aforementioned heat dissipation measures often present a challenge in balancing heat dissipation and noise reduction. For example, while an open-frame structure effectively improves the generator set's heat dissipation, it fails to effectively isolate the noise generated by the generator set and is more susceptible to external environmental influences. Conversely, designing the generator set with a closed or semi-closed structure can reduce noise and enhance its aesthetics. However, a closed structure prevents heat from dissipating smoothly, leading to heat buildup. While a semi-closed structure increases airflow and improves heat dissipation to some extent, the effect is limited, and the problem of relatively high noise levels persists. Summary of the Invention

[0004] To address the problem of simultaneously achieving heat dissipation and noise reduction in existing generator sets, this invention proposes a generator set heat dissipation structure and generator set thereof, which improves the airflow distribution inside the generator set, achieving efficient heat dissipation while effectively reducing generator noise, thus achieving the goal of combining heat dissipation and noise reduction effects.

[0005] To achieve the above objectives, the present invention adopts the following solution: a generator set heat dissipation structure and a generator set thereof, comprising a housing, an air guide shroud disposed within and communicating with the housing, and a silencer and a fan disposed within the air guide shroud;

[0006] The outer casing has a first air inlet on one side and a second air inlet and an air outlet on the opposite side.

[0007] The air guide shroud includes an air inlet air guide shroud, a generator air guide shroud, an engine air guide shroud, and a muffler air guide shroud arranged sequentially and interconnected. One port of the air inlet air guide shroud is connected to the first air inlet, and a certain gap is provided between the other port of the air inlet air guide shroud and the generator air guide shroud to serve as an air guide opening. The engine air guide shroud is disposed outside the engine, and includes a portion that protects the engine cylinder head and a portion that protects the engine housing. The muffler air guide shroud is fixed to the engine, with its air inlet port located at a position corresponding to the engine cylinder head, and its air outlet port connected to the air outlet.

[0008] The silencer is installed inside the silencer air guide shroud;

[0009] The fan includes a first fan and a second fan that are connected to the crankshaft of the engine. The first fan is disposed inside the generator air guide shroud. A volute is disposed on the inner side of the muffler air guide shroud. The air inlet port of the volute is opened at a position corresponding to the engine housing. The air outlet port of the volute is connected to the muffler air guide shroud. The second fan is disposed inside the volute.

[0010] The first air inlet and the air inlet guide shroud form the first air inlet duct;

[0011] The second air inlet and the air guide port form a second air inlet duct;

[0012] The first air inlet duct and the second air inlet duct converge at the air guide port position;

[0013] The generator air guide shroud, the engine air guide shroud portion covering the engine housing, the engine air guide shroud portion covering the engine cylinder head, the muffler air guide shroud, and the air outlet form a first heat dissipation air duct.

[0014] The generator air guide shroud, the engine air guide shroud portion covered by the engine housing, the volute, the muffler air guide shroud, and the air outlet form a second heat dissipation air duct;

[0015] The first and second heat dissipation ducts converge on the air outlet side of the silencer shroud and communicate with the outside through the air outlet.

[0016] With the above configuration, when the generator set is running, the crankshaft of the engine drives the rotation of the first and second fans, drawing in cool air from outside the generator set through the first and second air intake ducts. The cool air gathers and enters the first and second heat dissipation channels to absorb heat from various parts of the generator set before being discharged. Specifically, the airflow carries away heat from the engine cylinder head, part of the engine housing, and most of the muffler through the first heat dissipation duct, and carries away another part of the heat from the engine housing and another part of the muffler through the second heat dissipation duct, achieving efficient heat dissipation of the generator set. At the same time, the separation of the paths of cold and hot air and the further diversion within them effectively avoid airflow turbulence and noise problems, ensuring efficient heat dissipation.

[0017] Furthermore, the second air inlet is located above the air outlet.

[0018] With the above configuration, on the one hand, the second air inlet and the air guide form the air intake path of the second air intake duct; on the other hand, this path can pass through a large number of components of the generator set, so that the cold air passing through the second air intake duct can carry away some of the heat of the generator set before entering the air guide shroud.

[0019] Furthermore, the inner surface of the muffler air guide shroud has multiple planes, and any adjacent planes are transitioned by an arc surface.

[0020] With the above configuration, the muffler shroud with its curved box structure can work with the muffler inside to guide the hot air that gathers here through the first and second heat dissipation ducts, so that it can carry away the heat of the muffler here and expel it to the outside as soon as possible, thereby improving the heat dissipation efficiency.

[0021] Furthermore, the cross-sectional area of ​​the inner cavity of the silencer air guide shroud decreases along its length from the air inlet side to the air outlet side.

[0022] With the above configuration, the airflow can converge along the gradually narrowing inner cavity of the silencer shroud to its outlet side and be quickly discharged.

[0023] Furthermore, the opening direction of the air outlet port of the volute points to any side of the muffler air guide shroud that is adjacent to the plane where the volute is located and is far away from the other air inlet port of the muffler air guide shroud.

[0024] The above configuration ensures that, on the one hand, the airflow in the second heat dissipation duct can make greater contact with the muffler inside after entering the muffler shroud through the volute, thus carrying away the heat; on the other hand, it reduces the overlap of airflow in the first and second heat dissipation ducts after they enter the muffler shroud together, so as to avoid airflow turbulence that could affect the heat dissipation effect.

[0025] Furthermore, a wave-shaped buffer surface is provided between the air inlet port of the muffler air guide shroud and the air inlet port of the volute.

[0026] With the above settings, on the one hand, the buffer surface here serves to separate the first and second heat dissipation air ducts, preventing airflow from converging and intersecting; on the other hand, the use of a corrugated surface can reduce the wind load it bears, making the airflow smoother and reducing the noise generated when the airflow passes over the surface of the buffer surface.

[0027] Furthermore, a sealing element is provided on the air outlet side of the muffler air guide shroud, the sealing element being used to seal the air outlet port on the air outlet side of the muffler air guide shroud and the air outlet.

[0028] The above settings prevent the heat from flowing back into the heat dissipation structure through the gap between the two, thus avoiding affecting the heat dissipation efficiency.

[0029] Furthermore, the first air inlet, the second air inlet, and the air outlet adopt a perforated or louvered structure.

[0030] With the above settings, the air intake and exhaust volumes are satisfied to ensure the heat dissipation efficiency of the heat dissipation structure, while reducing the entry of external environmental factors such as rainwater and impurities into the generator set and affecting its normal operation.

[0031] Furthermore, the air intake volume of the first fan is greater than that of the second fan.

[0032] The above settings ensure the heat dissipation efficiency of the first and second heat dissipation ducts for different components in the generator set.

[0033] Another objective of this invention is to provide a generator set, including the generator set heat dissipation structure as described above, to overcome the problem that heat dissipation and noise reduction are difficult to balance in the prior art, and to achieve efficient heat dissipation and effective noise reduction of the generator set.

[0034] Beneficial effects:

[0035] This application provides a generator set heat dissipation structure and generator set. On one hand, by using a casing and a wind deflector to form a first and a second air intake duct with different paths, the air intake volume inside the generator set is increased. By utilizing the structural cooperation between the wind deflector and the generator set to form a first and a second heat dissipation duct, the airflow within the ducts flows through the generator set as much as possible, and the airflow velocity is further increased by the setting of a fan to accelerate heat dissipation. Ultimately, the cooperation of the air intake duct and the heat dissipation duct optimizes the flow path of each airflow to avoid turbulence and improve the heat dissipation efficiency of the generator set. On the other hand, the closed structure design of the generator set can also avoid the noise problems that may be caused by using a conventional open structure. Finally, through the path optimization of multiple air ducts in the closed heat dissipation structure, a high-efficiency and high-performance effect of both heat dissipation and noise reduction is achieved. Attached Figure Description

[0036] 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. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the generator set heat dissipation structure provided in an embodiment of this application.

[0038] Figure 2 This is a schematic diagram of the airflow paths within the generator set heat dissipation structure provided in the embodiments of this application.

[0039] Figure 3 This is a schematic diagram of the airflow paths inside and outside the generator set provided in the embodiments of this application.

[0040] Figure 4 This is a schematic diagram of the structure of the silencer air guide shroud provided in the embodiment of this application.

[0041] Explanation of icon numbers:

[0042] 1. Outer casing; 2. Air guide shroud; 3. Muffler; 4. Generator; 5. First air inlet; 6. Second air inlet; 7. Air outlet; 8. Air inlet air guide shroud; 9. Generator air guide shroud; 10. Engine air guide shroud; 11. Muffler air guide shroud; 12. Engine cylinder head; 13. Engine housing; 14. Upper engine air guide shroud; 15. Lower engine air guide shroud; 16. First fan; 17. Second fan; 18. Volute; 19. Buffer surface; 20. First muffler air guide shroud; 21. Second muffler air guide shroud; 22. Inverter; 23. Seals. Detailed Implementation

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] like Figure 1 and Figure 2 As shown, the present invention provides a generator set heat dissipation structure, including a housing 1, an air guide shroud 2 disposed inside the housing 1 and communicating with it, and a silencer 3 and a fan disposed inside the air guide shroud 2.

[0049] The outer casing 1 has a first air inlet 5 on one side and a second air inlet 6 and an air outlet 7 on the opposite side.

[0050] The air guide shroud 2 includes an air inlet air guide shroud 8, a generator air guide shroud 9, an engine air guide shroud 10, and a muffler air guide shroud 11 arranged sequentially and interconnected. One port of the air inlet air guide shroud 8 is connected to the first air inlet 5, and a certain gap is provided between the other port of the air inlet air guide shroud 8 and the generator air guide shroud 9 to serve as an air guide opening. The engine air guide shroud 10 is disposed outside the engine, and includes a portion that covers the engine cylinder head 12 and a portion that covers the engine housing 13. The muffler air guide shroud 11 is fixed to the engine, and the air inlet port of the muffler air guide shroud 11 is opened at the position corresponding to the engine cylinder head 12. The air outlet port of the muffler air guide shroud 11 is connected to the air outlet 7.

[0051] The silencer 3 is disposed inside the silencer air guide shroud 11;

[0052] The fan includes a first fan 16 and a second fan 17 that are drivenly connected to the crankshaft of the engine. The first fan 16 is disposed inside the generator air guide shroud 9. A volute 18 is disposed on the inner side of the muffler air guide shroud 11. The air inlet port of the volute 18 is opened at a position corresponding to the engine housing 13. The air outlet port of the volute 18 is connected to the muffler air guide shroud 11. The second fan 17 is disposed inside the volute 18.

[0053] The first air inlet 5 and the air inlet guide shroud 8 form the first air inlet duct;

[0054] The second air inlet 6 and the air guide port form a second air inlet duct;

[0055] The first air inlet duct and the second air inlet duct converge at the air guide port position;

[0056] The generator air guide shroud 9, the engine air guide shroud 10 portion covering the engine housing 13, the engine air guide shroud 10 portion covering the engine cylinder head 12, the muffler air guide shroud 11, and the air outlet 7 form a first heat dissipation air duct.

[0057] The generator air guide shroud 9, the engine air guide shroud 10 portion covering the engine housing 13, the volute 18, the muffler air guide shroud 11, and the air outlet 7 form a second heat dissipation air duct.

[0058] The first and second heat dissipation air ducts converge on the air outlet side of the silencer shroud 11 and communicate with the outside through the air outlet 7.

[0059] In this embodiment, for ease of understanding, the heat dissipation structure described above is explained in conjunction with the generator set. (Refer to...) Figure 1 The generator set includes an inverter, a generator 4, and an engine arranged from left to right. The engine comprises an engine cylinder head 12 and an engine housing 13. (See also...) Figure 2 and Figure 3 The outer shell 1 and the air guide shroud 2 in the heat dissipation structure are sequentially arranged outside the generator set from the outside to the inside. Specifically, the air inlet air guide shroud 8 is located outside the inverter 22, the generator air guide shroud 9 is located outside the generator 4, the engine air guide shroud 10 is located outside the engine, and the muffler air guide shroud 11 is located outside the muffler. The engine air guide shroud 10 can be divided or composed of multiple parts assembled together, depending on the different parts of the engine corresponding to it. In this embodiment, refer to... Figure 1 and Figure 2 The engine air shroud 10 can be divided into an upper engine air shroud 14 and a lower engine air shroud 15, which are arranged together outside the engine. The upper engine air shroud 14 is located outside the engine cylinder head 12 and part of the engine housing 13, while the lower engine air shroud 15 is located outside the remaining part of the engine housing 13. It should be noted that, provided that the first heat dissipation channel and the second heat dissipation air duct are formed as described above, the upper engine air shroud 14 and the lower engine air shroud 15 can be fixed to any part of the engine that is easy to install and does not affect its normal operation. Those skilled in the art can design them themselves, and no specific restrictions are made here.

[0060] It should be noted that the engine cylinder head 12 mentioned above refers to the combustion chamber, which is the area inside the engine where combustion takes place. This area is usually one of the hottest parts of the engine. The engine housing 13 includes the crankshaft, connecting rods, and other parts. The combustion chamber transfers heat to it through the crankshaft, connecting rods, and lubricating oil, so this part is also one of the hottest parts of the engine. In addition, the movement of the various moving parts inside it also generates a certain amount of heat.

[0061] During generator set operation, driven by the engine crankshaft, the first fan 16 and the second fan 17 rotate, allowing outside air to enter the outer casing 1 through the first air inlet 5 and the second air inlet 6. (Refer to...) Figure 3 In this process, on one hand, the airflow entering through the first air inlet 5 enters the outer casing 1 and then flows into the air inlet guide shroud 8 to cool the inverter installed inside. On the other hand, the airflow entering through the second air inlet 6 enters the outer casing 1, first flows past the outside of the guide shroud 2, carrying away some of the heat dissipated from the guide shroud 2 into the outer casing 1, as well as the heat generated by other unprotected components of the generator set. Then, it enters the guide shroud 2 through the gap between the air inlet guide shroud 8 and the generator guide shroud 9, which serves as an air inlet. The two airflows finally converge at the air inlet and flow together into the generator guide shroud 9.

[0062] The two airflows converge into the air guide shroud 2 and flow through the generator air guide shroud 9. After carrying away the heat from the generator 4 and entering the engine air guide shroud 10, the originally converged airflow is split at the engine air guide shroud 10 according to its structural fit with the engine. (Refer to...) Figure 3 In this process, one stream of air flows sequentially through the upper engine shroud 14, the engine housing 13, and the engine cylinder head 12, carrying away some heat from the engine housing 13 and the engine cylinder head 12 before entering the muffler shroud 11. Conversely, another stream of air flows sequentially through the upper engine shroud 14, the engine housing 13, and the lower engine shroud 15, carrying away a larger portion of heat from the engine housing 13 before entering the muffler shroud 11. These two streams of air will then converge again within the muffler shroud 11. It should be noted that the entry points for these two streams into the muffler shroud 11 are not the same. (See also...) Figure 3 and Figure 4The port on the muffler shroud 11 that connects to one side of the engine shroud 10 serves as the muffler air inlet, through which the first airflow enters. Meanwhile, the airflow driven by the second fan 17 passes through the volute 18, serving as another muffler air inlet, and enters the muffler shroud 11. The two airflows converge within the muffler shroud 11, carrying away the heat from the muffler 3 housed therein, and finally exit together through the air outlet 7 on the outer casing 1.

[0063] The external heat dissipation structure of the generator set in this embodiment, through the arrangement of the first and second air intake channels, can remove heat from the inverter and some of the heat between the outer casing 1 and the air guide shroud 2 while meeting the air intake requirements. The first and second heat dissipation channels also collect, divert, and recollect the airflow from the first and second air intake channels, ultimately removing heat from the inverter 22, generator 4, engine, muffler 3, and other components inside the generator set. This clear airflow path effectively solves the problems of noise and poor heat dissipation caused by turbulent airflow. Furthermore, the muffler further reduces noise generated by airflow, ultimately achieving efficient heat dissipation and effective noise reduction for the generator set.

[0064] Table 1. Temperature comparison at various points in generator sets with different heat dissipation structures.

[0065]

[0066] To ensure the normal operation of the generator set, the temperature of each component needs to be maintained within an appropriate range. For the engine, which releases a large amount of heat during fuel combustion, selecting several key points as performance indicators is crucial for evaluating its heat dissipation effectiveness. Engine oil plays a role in lubrication and cooling within the engine; therefore, maintaining the oil temperature within an appropriate range helps ensure normal engine operation and extends engine life. Spark plugs, located in the engine's combustion chamber, are an important component of the ignition system. High-temperature gases generated by engine combustion are conducted to their surface through the spark plugs. If the cooling system is effective, the spark plug temperature should be maintained within an appropriate range to ensure the normal operation of the ignition system. Therefore, by monitoring and controlling the oil temperature and spark plug temperature, the heat dissipation effect of the generator set's cooling system can be evaluated. If these two parameters are within an appropriate range, it indicates that the cooling system is effective, able to dissipate the heat generated by the engine in a timely manner, and keep all components within a reasonable operating temperature range. Conversely, if the oil temperature and spark plug temperature are too high, it indicates poor heat dissipation, which may mean there is a problem with the cooling system. In this embodiment, with the same air intake volume, Table 1 shows a temperature comparison at key points between generator sets using the heat dissipation structure of this application and those using conventional heat dissipation structures. At ambient temperatures of 30°C, 40°C, and 50°C, the oil temperature and spark plug temperature in the generator set using the heat dissipation structure of this application are lower than the corresponding temperatures in the generator set using a conventional heat dissipation structure. The data in Table 1 and its extended data show that the heat dissipation effect of this application is more significant, improving upon conventional heat dissipation structures by 5% to 15%.

[0067] In some embodiments of this application, the second air inlet 6 is disposed above the air outlet 7.

[0068] With the above settings, on the one hand, the path of the second air inlet duct, which is composed of the second air inlet 6 and the air guide, is made possible; on the other hand, the path is made to pass through more components of the generator set, so that the cold air passing through the second air inlet duct can carry away some of the heat of the generator set before entering the air guide shroud 2.

[0069] In some embodiments of this application, the inner surface of the muffler shroud 11 has multiple planes, and any adjacent planes are transitioned by an arc surface.

[0070] With the above configuration, the muffler shroud 11 with its curved box structure can guide the hot air that converges here through the first and second heat dissipation ducts, in conjunction with the muffler inside. For example, the muffler shroud 11 can be a polyhedral structure with rounded corners and edges on its inner surface, allowing it to carry away the heat from the muffler while quickly expelling it to the outside, thus improving heat dissipation efficiency. Furthermore, the polyhedral structure of the muffler shroud 11 can also be composed of at least two parts joined together using fasteners, as described above. Figure 4 The muffler air guide shroud 11 may also include a first muffler air guide shroud 20 connected to the engine air guide shroud 10 and a second muffler air guide shroud 21 adjacent to the first muffler air guide shroud 20. The two are arranged in a left-right or top-bottom enclosing form to form the muffler air guide shroud, which makes it easier to disassemble and assemble the muffler air guide shroud 11 itself and the muffler 3 disposed inside it.

[0071] In some embodiments of this application, reference is made to Figure 4 The cross-sectional area of ​​the inner cavity of the silencer air guide shroud 11 decreases along its length from the air inlet side to the air outlet side.

[0072] With the above configuration, the inner surface of the muffler air guide shroud 11 and the volume of the cavity formed therethrough for airflow gradually decrease with the direction of airflow, so that the airflow can be gathered on the air outlet side of the muffler air guide shroud 11 and quickly discharged through the air outlet 7.

[0073] In some embodiments of this application, the opening direction of the air outlet port of the volute 18 points to any side of the muffler air guide shroud 11 that is adjacent to the plane where the volute 18 is located and is far away from the other air inlet port of the muffler air guide shroud 11.

[0074] With the above settings, on the one hand, the airflow in the second heat dissipation duct can come into contact with the muffler 3 inside the muffler after entering the muffler guide shroud 11 through the volute 18 to a greater extent so as to remove the heat here; on the other hand, the airflow in the first heat dissipation duct and the second heat dissipation duct can reduce the crossover after entering the muffler guide shroud 11 together, so as to avoid airflow turbulence and affect the heat dissipation effect.

[0075] In some embodiments of this application, a wave-shaped buffer surface 19 is provided between the air inlet side port of the muffler air guide shroud 11 and the air inlet side port of the volute 18.

[0076] The corrugated surface can reduce vibration and noise in mechanical systems by changing the airflow direction and reducing friction between fluids and solids. With this design, on the one hand, the buffer surface 19 separates the first and second heat dissipation ducts, preventing airflow convergence and overlap; on the other hand, the corrugated buffer surface 19 reduces the wind load it bears, making the airflow smoother and reducing noise generated when airflow passes over the surface of the buffer surface 19.

[0077] In some embodiments of this application, a sealing element 23 is provided on the air outlet side of the muffler air guide shroud 11, and the sealing element 23 is used to seal the air outlet side port of the muffler air guide shroud 11 and the air outlet 7.

[0078] With the above configuration, the airflow inside the muffler shroud 11 can flow directly to the external environment through the only outlet, the air outlet 7, after exiting from inside, thus preventing it from flowing back into the heat dissipation structure through the gap between the two and affecting the heat dissipation efficiency. The sealing element 23 can be a rubber ring, which can be arranged to wrap around the muffler shroud 11, serving both as a seal and to reduce impact and vibration.

[0079] In some embodiments of this application, the first air inlet 5, the second air inlet 6, and the air outlet 7 adopt a porous or louvered structure.

[0080] Through the above settings, while ensuring the heat dissipation efficiency of the heat dissipation structure by meeting the requirements for air intake and exhaust volume, the entry of external environmental factors such as rainwater and impurities into the generator set and affecting its normal operation is reduced. Specifically, the first air inlet 5 and the air outlet 7, which have larger air intake and exhaust volumes, can be of louvered design, while the second air inlet 6, with a relatively smaller air intake volume, can be of perforated design. The angles of both the louvered and perforated designs can be adjusted as needed to balance airflow and rain protection requirements, and no restrictions are imposed here.

[0081] In some embodiments of this application, the air intake volume of the first fan 16 is greater than that of the second fan 17.

[0082] The above settings ensure the heat dissipation efficiency of the first and second heat dissipation ducts, which are respectively designed for components in the generator set that generate different amounts of heat.

[0083] In another embodiment of the present invention, a generator set is also provided, including the generator set heat dissipation structure as described in any of the above embodiments, and further including an inverter 22, a generator 4, and an engine. Since the generator set and its heat dissipation structure have been described in detail in the above embodiments, they will not be repeated here; please refer to the above embodiments for a detailed description.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0085] 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 heat dissipation structure for a generator set, characterized in that: It includes an outer casing, an air guide shroud disposed within and communicating with the outer casing, and a silencer and a fan disposed within the air guide shroud; The outer casing has a first air inlet on one side and a second air inlet and an air outlet on the opposite side. The air guide shroud includes an air inlet air guide shroud, a generator air guide shroud, an engine air guide shroud, and a muffler air guide shroud arranged sequentially and interconnected. One port of the air inlet air guide shroud is connected to the first air inlet, and a certain gap is provided between the other port of the air inlet air guide shroud and the generator air guide shroud to serve as an air guide opening. The engine air guide shroud is disposed outside the engine, and includes a portion that protects the engine cylinder head and a portion that protects the engine housing. The muffler air guide shroud is fixed to the engine, with its air inlet port located at a position corresponding to the engine cylinder head, and its air outlet port connected to the air outlet. The silencer is installed inside the silencer air guide shroud; The fan includes a first fan and a second fan that are connected to the crankshaft of the engine. The first fan is disposed inside the generator air guide shroud. A volute is disposed on the inner side of the muffler air guide shroud. The air inlet port of the volute is opened at a position corresponding to the engine housing. The air outlet port of the volute is connected to the muffler air guide shroud. The second fan is disposed inside the volute. The first air inlet and the air inlet guide shroud form the first air inlet duct; The second air inlet and the air guide port form a second air inlet duct; The first air inlet duct and the second air inlet duct converge at the air guide port position; The generator air guide shroud, the engine air guide shroud portion covering the engine housing, the engine air guide shroud portion covering the engine cylinder head, the muffler air guide shroud, and the air outlet form a first heat dissipation air duct. The generator air guide shroud, the engine air guide shroud portion covered by the engine housing, the volute, the muffler air guide shroud, and the air outlet form a second heat dissipation air duct; The first and second heat dissipation ducts converge on the air outlet side of the silencer shroud and communicate with the outside through the air outlet.

2. The generator set heat dissipation structure as described in claim 1, characterized in that, The second air inlet is located above the air outlet.

3. The generator set heat dissipation structure as described in claim 1, characterized in that, The inner surface of the silencer shroud has multiple planes, and any adjacent planes are connected by an arc transition.

4. The generator set heat dissipation structure as described in claim 1, characterized in that, The cross-sectional area of ​​the inner cavity of the silencer air guide shroud decreases along its length from the air inlet side to the air outlet side.

5. The generator set heat dissipation structure as described in claim 3 or 4, characterized in that, The opening direction of the air outlet port of the volute points to any side of the muffler air guide shroud that is adjacent to the plane where the volute is located and is far away from the other air inlet port of the muffler air guide shroud.

6. The generator set heat dissipation structure as described in claim 1, characterized in that, A wave-shaped buffer surface is provided between the air inlet port of the muffler air guide shroud and the air inlet port of the volute.

7. The generator set heat dissipation structure as described in claim 1, characterized in that, A sealing element is provided on the air outlet side of the silencer air guide shroud, and the sealing element is used to seal the air outlet port on the air outlet side of the silencer air guide shroud and the air outlet.

8. The generator set heat dissipation structure as described in claim 1, characterized in that, The first air inlet, the second air inlet, and the air outlet adopt a perforated or louvered structure.

9. The generator set heat dissipation structure as described in claim 1, characterized in that, The air intake volume of the first fan is greater than that of the second fan.

10. A generator set, characterized in that: It includes the generator set heat dissipation structure as described in any one of claims 1 to 9.

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