Engine cooling structure and generator set

Abstract

The utility model provides an engine cooling structure and a generator set, the engine cooling structure comprises a power main body, a wind scooper, an impeller, a motor main body, a silencer and a wind deflector, and the wind scooper and the power main body form a mounting cavity. And the silencer is arranged below the cylinder head of the power main body and is close to the power main body. An air duct is formed between the air deflector and the power main body, the air duct is communicated with the mounting cavity, and a flow guide part is arranged on the air deflector and used for guiding airflow in the air duct to the silencer. The air deflector with the flow guide part is designed between the power main body and the silencer, so that heat radiation of the silencer to the power main body is reduced, and the problem that the temperature of engine oil of the power main body and the temperature of the cylinder head are high due to poor heat dissipation effect of the silencer and heat radiation of the silencer in an engine structure with the silencer designed below the cylinder head is solved; and the cooling effect on the power main body is improved, so that the power performance and the economical efficiency of the operation of the whole machine are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and particularly relates to an engine cooling structure and a generator set. Background Art

[0002] For some existing engines, in order to make the whole machine more compact, the muffler is arranged below the cylinder head of the power main body. However, for engines with such a structure, if the muffler cannot dissipate heat in time, the heat of the muffler will continuously radiate to the power main body, which will cause a significant increase in the temperature of the engine oil in the cylinder and the cylinder head, resulting in a reduction in engine performance, affecting power, and shortening the service life of the engine oil. Summary of the Utility Model

[0003] Aiming at the defects in the prior art, the purpose of the utility model is to provide an engine cooling structure and a generator set to reduce the heat radiation of the muffler to the power main body and improve the power performance and economy of the whole machine during operation.

[0004] To achieve the above purpose, the utility model provides an engine cooling structure, which includes a power main body; a wind guide cover arranged on one side of the power main body and forming an installation cavity with the power main body; an impeller arranged in the installation cavity; a motor main body arranged in the installation cavity and located between the motor main body and the impeller; a muffler arranged below the cylinder head of the power main body; and a wind guide plate arranged between the power main body and the muffler. A wind channel is formed between the wind guide plate and the power main body. The wind channel is communicated with the installation cavity. An air outlet is arranged at one end of the wind channel far away from the installation cavity. A flow guiding part is arranged on the wind guide plate, and the flow guiding part is used to guide the air flow in the wind channel to the muffler.

[0005] Preferably, the flow guiding part includes a first air hole penetrating through the wind guide plate and facing the muffler.

[0006] Preferably, the flow guiding part further includes a first flow guiding vane arranged in the wind channel. The first flow guiding vane is close to the first air hole. An air-facing surface is arranged on one side of the first flow guiding vane facing the air inlet direction of the wind channel, and the air-facing surface is connected with the edge of the first air hole.

[0007] Preferably, one end of the air-facing surface close to the power main body is inclined towards the installation cavity.

[0008] Preferably, a wind guiding slope is arranged on the wind guide plate. One end of the wind guiding slope close to the installation cavity is inclined towards the muffler. The first air hole and the first flow guiding vane are arranged on the wind guiding slope.

[0009] Preferably, a plurality of the first air holes and the first flow guiding vanes are provided, and the plurality of the first air holes are arranged at intervals along the air guiding slope.

[0010] Preferably, the air guiding plate covers the heat dissipation ribs on one side of the power main body close to the muffler.

[0011] Preferably, an exhaust pipe is provided on one side of the power main body facing away from the air guiding cover, and two ends of the exhaust pipe are respectively connected to the muffler and the cylinder head of the power main body, and the exhaust pipe is close to the air outlet.

[0012] Preferably, a protective shell is further included. An installation groove is provided in the protective shell, the exhaust pipe is arranged in the installation groove, the notch of the installation groove faces the air outlet, and a plurality of through holes are provided on the protective shell.

[0013] The utility model further provides a generator set, including the above-mentioned engine cooling structure.

[0014] Advantages of the utility model:

[0015] An engine cooling structure and a generator set disclosed by the utility model design an air guiding plate with a guiding part between the power main body and the muffler. When the cooling air flow flowing out of the installation cavity flows through the air duct, part of the cooling air flow will flow towards the air outlet, which will take away part of the heat of the power main body. And part of the cooling air flow will be guided to the muffler. In this way, the heat dissipation and cooling of the power main body and the muffler are realized. At the same time, the heat radiation of the muffler to the power main body is reduced, and the problems of high temperature of the engine oil and the cylinder head of the power main body caused by poor heat dissipation effect of the muffler and heat radiation of the muffler in the engine structure with the muffler designed below the cylinder head are solved, the cooling effect on the power main body is improved, and thus the power performance and economic performance of the whole machine operation are improved. Description of the drawings

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0017] Figure 1 Schematic diagram of an engine cooling structure provided by an embodiment of the utility model;

[0018] Figure 2 Schematic diagram of the cooperation structure of the air guiding cover and the air guiding plate;

[0019] Figure 3 Schematic cross-sectional view of the installation cavity and the air duct;

[0020] Figure 4 is a partial schematic view of the first air hole;

[0021] Figure 5 is a schematic structural view of the air guide plate;

[0022] Figure 6 is a schematic structural view after hiding the muffler;

[0023] Figure 7 is a schematic structural view of the cooperation between the exhaust pipe and the protective shell;

[0024] Reference numerals:

[0025] 10, power main body; 11, exhaust pipe; 20, air guide cover; 21, fan cover; 30, impeller; 40, motor main body; 50, muffler; 60, air guide plate; 61, first air hole; 62, first guide vane; 621, windward surface; 63, air guide slope; 64, second air hole; 65, second guide vane; 71, installation cavity; 72, air duct; 73, air outlet; 80, protective shell; 81, through hole. Detailed implementation manners

[0026] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and thus are only examples and cannot be used to limit the protection scope of the present utility model.

[0027] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.

[0028] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0029] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0030] In this application, unless otherwise clearly specified or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] As Figure 1-7 shown, in an embodiment of the present utility model, an engine cooling structure and a generator set are provided. The engine cooling structure includes a power main body 10, a wind guide cover 20, an impeller 30, a motor main body 40, a muffler 50 and a wind guide plate 60. The wind guide cover 20 is arranged on one side of the power main body 10 and forms an installation cavity 71 with the power main body 10. A fan cover 21 is arranged on the wind guide cover 20. Both the impeller 30 and the motor main body 40 are arranged in the installation cavity 71, and the motor main body 40 is located between the motor main body 40 and the impeller 30. The muffler 50 is arranged below the cylinder head of the power main body 10 and is close to the power main body 10. The wind guide plate 60 is arranged between the power main body 10 and the muffler 50. The wind guide plate 60 is respectively connected to the wind guide cover 20 and the power main body 10. A wind duct 72 is formed between the wind guide plate 60 and the power main body 10. The wind duct 72 communicates with the installation cavity 71. An air outlet 73 is arranged at one end of the wind duct 72 far from the installation cavity 71. A flow guiding portion is arranged on the wind guide plate 60, and the flow guiding portion is used for guiding the air flow in the wind duct 72 to the muffler 50. Among them, the generator set includes the above-mentioned engine cooling structure.

[0033] When the power main body 10 drives the motor main body 40 and the impeller 30 to operate, the high-speed rotation of the impeller 30 will form a negative pressure in the installation cavity 71, and the outside air is sucked into the installation cavity 71 to form a cooling air flow. The cooling air flow will first cool the motor main body 40 in the installation cavity 71. Then, the cooling air flow will flow to the wind duct 72. During the flowing process, the cooling air flow will take away part of the heat of the power main body 10, so as to achieve the purpose of dissipating heat and cooling the power main body 10.

[0034] Meanwhile, during the flow of the cooling air flow in the air duct 72, under the action of the diversion part, part of the cooling air flow will be guided to the muffler 50, and this part of the cooling air flow can cool the muffler 50. In this way, the heat dissipation and cooling of the power main body 10 and the muffler 50 are realized.

[0035] An engine cooling structure and a generator set disclosed in this embodiment, by designing a wind guiding plate 60 with a diversion part between the power main body 10 and the muffler 50, during the process of the cooling air flow flowing out of the installation cavity 71 and flowing through the air duct 72, part of the cooling air flow will flow to the air outlet 73, which will take away part of the heat of the power main body 10. And part of the cooling air flow will be guided to the muffler 50. In this way, the heat dissipation and cooling of the power main body 10 and the muffler 50 are realized. At the same time, the heat radiation of the muffler 50 to the power main body 10 is reduced, and the problems of high temperature of the engine oil and the cylinder head of the power main body 10 caused by poor heat dissipation effect of the muffler 50 and heat radiation of the muffler 50 in the engine structure with the muffler 50 designed under the cylinder head are solved, the cooling effect on the power main body 10 is improved, and thus the power performance and economic performance of the whole machine operation are improved.

[0036] In one embodiment, the diversion part includes a first air hole 61, and the first air hole 61 penetrates through the wind guiding plate 60 and faces the muffler 50. During the process of the cooling air flow flowing through the air duct 72, part of the cooling air flow will blow from the first air hole 61 to the muffler 50, and the cooling air flow will blow away the heat on the surface of the muffler 50, so as to achieve the purpose of dissipating heat from the muffler 50, which reduces the heat radiation of the muffler 50 to the power main body 10.

[0037] Furthermore, the diversion part further includes a first diversion piece 62 arranged in the air duct 72. The first diversion piece 62 is close to the first air hole 61, and an air-facing surface 621 is arranged on one side of the first diversion piece 62 facing the air inlet direction of the air duct 72, and the air-facing surface 621 is connected to the edge of the first air hole 61. When the cooling air flow flows through the first diversion piece 62, it will be blocked by the air-facing surface 621 and diverted into the first air hole 61, thereby improving the diversion effect on the cooling air flow and enhancing the heat dissipation effect on the muffler 50.

[0038] In order to guide more cooling air flow into the first air hole 61 and further improve the diversion effect on the cooling air flow, one end of the air-facing surface 621 close to the power main body 10 is inclined towards the installation cavity 71.

[0039] In one embodiment, the wind guide plate 60 is provided with a wind guide slope 63, and one end of the wind guide slope 63 close to the installation cavity 71 is inclined toward the muffler 50, and the first wind hole 61 and the first guide plate 62 are arranged on the wind guide slope 63. By designing the wind guide slope 63 on the wind guide plate 60, when the cooling airflow flows along the wind guide slope 63, it is easier to flow to the first wind hole 61 and the windward surface 621, so that more cooling airflow can be guided to the muffler 50, thereby improving the heat dissipation and cooling effect of the muffler 50.

[0040] Different models can increase the number of first air holes 61 and the opening size of the first air holes 61 according to actual conditions, so as to adjust the air volume and wind speed. In this embodiment, three first air holes 61 and three first guide vanes 62 are provided, and the three first air holes 61 are arranged at intervals along the wind guide slope 63. Of course, second air holes 64 and second guide vanes 65 can also be designed on the wind guide plate 60 to further improve the guiding effect of the cooling airflow. The structure of the second guide vane 65 is the same as that of the first guide vane 62, and will not be repeated here.

[0041] In one embodiment, the air guide plate 60 covers the heat dissipation ribs on the side of the power body 10 close to the muffler 50. Specifically, an air duct 72 is formed between the air guide plate 60 and the heat dissipation ribs on the side of the power body 10 close to the muffler 50. After the cooling airflow in the installation cavity 71 flows to the air duct 72, part of the cooling airflow will flow along the gap between the adjacent heat dissipation ribs on this side of the power body 10, and the heat of the power body 10 will be taken away during the flow process, thereby achieving heat dissipation and cooling of the power body 10, and effectively reducing the temperature of the engine oil and the cylinder head.

[0042] In one embodiment, an exhaust pipe 11 is provided on the side of the power body 10 away from the air guide cover 20, and the two ends of the exhaust pipe 11 are respectively connected to the muffler 50 and the cylinder head of the power body 10, and the exhaust pipe 11 is close to the exhaust port 73. Part of the cooling airflow is discharged from the exhaust port 73 through the air duct 72, and this cooling airflow will blow toward the exhaust pipe, thereby taking away the heat of the exhaust pipe, reducing the temperature of the exhaust pipe, and reducing the heat radiation of the exhaust pipe 11.

[0043] Furthermore, the engine cooling structure also includes a protective shell 80, in which a mounting groove is provided, and the exhaust pipe 11 is provided in the mounting groove, the notch of the mounting groove faces the exhaust port 73, and a plurality of through holes 81 are provided on the protective shell 80. The design of the protective shell 80 can intercept the cooling airflow discharged from the exhaust port 73, so that this part of the cooling airflow can stay in the protective shell 80 for a short time, thereby improving the cooling effect on the exhaust pipe 11, and finally, this part of the cooling airflow will be discharged from the through hole 81 to take away the heat.

[0044] In the description of the present utility model, a large number of specific details are set forth. However, it is understood that the embodiments of the present utility model may be practiced without these specific details. In some instances, well-known methods, structures and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit the same; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the specification of the present utility model.

Claims

1. An engine cooling structure, characterized in that: include: Power body (10); An air guide cover (20) is arranged on one side of the power body (10) and forms a mounting cavity (71) with the power body (10); An impeller (30) is arranged in the installation cavity (71); A motor body (40) is disposed in the mounting cavity (71) and is located between the motor body (40) and the impeller (30); a muffler (50) disposed below the cylinder head of the power body (10); and An air guide plate (60) is arranged between the power body (10) and the muffler (50), an air duct (72) is formed between the air guide plate (60) and the power body (10), the air duct (72) is communicated with the installation cavity (71), an air outlet (73) is arranged at one end of the air duct (72) away from the installation cavity (71), and a guide portion is arranged on the air guide plate (60), the guide portion is used to guide the airflow in the air duct (72) to the muffler (50).

2. The engine cooling structure according to claim 1, characterized in that: The air guide portion comprises a first air hole (61), wherein the first air hole (61) passes through the air guide plate (60) and faces the muffler (50).

3. The engine cooling structure according to claim 2, characterized in that: The guide portion further comprises a first guide plate (62) arranged in the air duct (72), the first guide plate (62) being close to the first air hole (61), and a windward surface (621) being provided on a side of the first guide plate (62) facing the air inlet direction of the air duct (72), the windward surface (621) being connected to an edge of the first air hole (61).

4. The engine cooling structure according to claim 3, characterized in that: An end of the windward surface (621) close to the power body (10) is inclined toward the installation cavity (71).

5. The engine cooling structure according to claim 3, characterized in that: The wind guide plate (60) is provided with a wind guide slope (63), and one end of the wind guide slope (63) close to the installation cavity (71) is inclined toward the muffler (50), and the first air hole (61) and the first guide plate (62) are arranged on the wind guide slope (63).

6. The engine cooling structure according to claim 5, characterized in that: A plurality of the first air holes (61) and the first guide plate (62) are provided, and the plurality of the first air holes (61) are arranged at intervals along the air guide slope (63).

7. The engine cooling structure according to claim 1, characterized in that: The air guide plate (60) covers the heat dissipation ribs on a side of the power body (10) close to the muffler (50).

8. The engine cooling structure according to claim 7, characterized in that: An exhaust pipe (11) is provided on the side of the power body (10) facing away from the air guide cover (20), and the two ends of the exhaust pipe (11) are respectively connected to the muffler (50) and the cylinder head of the power body (10), and the exhaust pipe (11) is close to the exhaust port (73).

9. The engine cooling structure according to claim 8, characterized in that: It also comprises a protective shell (80), wherein a mounting groove is provided in the protective shell (80), the exhaust pipe (11) is arranged in the mounting groove, the notch of the mounting groove faces the exhaust port (73), and a plurality of through holes (81) are provided on the protective shell (80).

10. A generator set, characterized in that: The engine cooling structure comprises the engine cooling structure according to any one of claims 1 to 9.

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