Air guide and heat dissipation structure of four-stroke engine

Abstract

The utility model discloses a four-stroke engine air guide and heat dissipation structure, which belongs to the technical field of engines, and comprises an engine body, a lubrication box is mounted at the left end of the outer wall of the engine body, the lubrication box comprises an oil pan, the oil pan is fixedly connected to the left end of the outer wall of the lubrication box, and the oil pan is fixedly connected to the left end of the outer wall of the lubrication box. A heat dissipation assembly for dissipating heat of the engine is arranged in the engine body, an air guide assembly for improving the heat dissipation efficiency is installed at the front end of the outer wall of the engine body, the air guide assembly comprises an air guide channel, and the air guide channel is formed in the inner wall of the engine body; cold air can be conveyed into the air guide channel through the air guide blades, it can be guaranteed that cooling air can smoothly flow through all heating parts of an engine through the air guide channel, meanwhile, the heat dissipation efficiency can be improved through the internal and external design of the first cooling fins and the second cooling fins, and the air guide and heat dissipation use requirements of the device are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, more specifically, relate to a four -stroke engine air -guiding heat radiation structure. BACKGROUND

[0002] Four -stroke engine, also called four -stroke engine, is a kind of internal combustion engine, it completes a working cycle through four different stages, respectively, intake, compression, work, exhaust. In four -stroke engine, its core components are cylinder body, piston, crank and output shaft etc., due to fuel combustion in cylinder body and so on, resulting in the temperature of cylinder body is higher in the running process of engine, to ensure the normal operation of engine, need to take heat dissipation means to engine

[0003] Chinese patent authorized announcement number: CN221400703U provides a four -stroke engine air -guiding heat radiation structure, the scheme includes engine body, cylinder cover, deflector, the output shaft of engine body is connected with flywheel, flywheel cover is equipped on engine body, flywheel is located in flywheel cover;The lower end of flywheel cover is equipped with air inlet, and the upper end of flywheel is equipped with air outlet;The outside of the cylinder of engine body is equipped with fin;Cylinder cover is connected with engine body, and deflector is connected on cylinder cover, and deflector is located above air outlet, and arc deflector surface is equipped on deflector.In the above utility model, when engine body runs, the output shaft on engine body drives flywheel to rotate, when flywheel rotates, air is sucked from the air inlet in the lower end of flywheel cover and is discharged from the air outlet in the upper end, and after the wind is discharged from the air outlet, it is blown to the fin on cylinder after the guiding effect of deflector, to promote the air flow at fin, improve the heat dissipation efficiency of fin.But the device only dissipates heat to engine through the fin on the outside, and the heat dissipation structure of the device is simple, and there is certain limitation in actual use to the heat dissipation demand.

[0004] Therefore, a four -stroke engine air -guiding heat radiation structure is provided for the above problems. Utility model content

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a four -stroke engine air -guiding heat radiation structure, it can realize that cold air is transmitted to the air -guiding channel by air -guiding blade, through air -guiding channel, it can ensure that cooling air can flow through each heat -generating part of engine smoothly, and the inner and outer design of first fin and second fin can improve the heat dissipation efficiency, meet the air -guiding heat dissipation use demand of device.

[0007] 2. Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] The utility model provides a four -stroke engine air -guiding heat radiation structure, including engine body, the outer wall left end of engine body is installed with lubricating box, the lubricating box includes oil pan, the oil pan fixed connection is in the outer wall left end of lubricating box, the inside of engine body is provided with the heat radiation subassembly that carries out heat dissipation to engine, the outer wall front end of engine body is installed with the air -guiding component that increases heat dissipation efficiency.

[0010] Further, the air -guiding component includes an air -guiding channel, the air -guiding channel is opened in the inner wall of the engine body, the end of the air -guiding channel is fixedly connected with an air -guiding pipe, the end of the air -guiding pipe is fixedly connected to the inner wall of the oil pan, the inner wall of the air -guiding channel is rotatably connected with a mounting ring, the outer wall of the mounting ring is fixedly connected with an external plate, the inner wall of the mounting ring is equidistantly fixedly connected with a plurality of air -guiding blades, and the external plate is threadedly connected to the outer wall front end of the engine body through a plurality of mounting bolts.

[0011] Further, the heat radiation component includes a plurality of first heat dissipation fins, the plurality of first heat dissipation fins are equidistantly fixedly connected to the inner wall of the air -guiding channel with the center of the air -guiding channel as an axis, the first heat dissipation fins are arranged in the track of the air -guiding channel, the outer wall of the first heat dissipation fins is staggered with a plurality of corrugations, and the plurality of first heat dissipation fins form a triangular channel.

[0012] Further, the connection between the oil pan and the air -guiding pipe is fixedly connected with a heat dissipation grid.

[0013] Further, the inner wall of the oil pan is fixedly connected with an air -guiding plate, and the inner wall of the air -guiding plate is equidistantly provided with a plurality of air -guiding grooves.

[0014] Further, the outer wall of the engine body is fixedly connected with a plurality of second heat dissipation fins.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] (1) The cold air is transmitted to the air -guiding channel through the air -guiding blades, the cooling air can flow smoothly through each heating part of the engine through the air -guiding channel, the heat dissipation efficiency can be improved through the inner and outer design of the first heat dissipation fins and the second heat dissipation fins, and the air -guiding and heat dissipation use requirements of the device are met.

[0018] (2) The cooling air can contact the lubricating oil through the design of the heat dissipation grid and the air -guiding plate, the temperature of the lubricating oil is reduced, the lubricating performance is improved, and the multifunctionality of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1It is the front view three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the rear view three-dimensional structure schematic diagram of the utility model;

[0021] Figure 3 It is the local explosion structure schematic diagram of the utility model;

[0022] Figure 4 It is Figure 3 The enlarged structure schematic diagram of A in the figure;

[0023] Figure 5 It is the local split structure schematic diagram of the utility model.

[0024] Marking in the figure:

[0025] 1, engine body;2, lubricating tank;21, oil sump;3, air guide channel;31, air guide pipe;32, mounting ring;33, external plate;34, air guide blade;35, mounting bolt;4, first heat sink;41, corrugation;5, air guide plate;6, heat dissipation grid;7, second heat sink. Specific implementation

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model;Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "up", "down", "inner", "outer", "top / bottom end" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "set with", "sleeve set / interface", "connection" and the like should be understood broadly, for example, "connection", can be fixed connection, also can be detachable connection, or integral connection;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0029] Embodiment:

[0030] Please refer to Figure 1 - Figure 5 A four-stroke engine air guide heat dissipation structure, including engine body 1, the outer wall left end of engine body 1 is installed with lubricating box 2, lubricating box 2 includes oil pan 21, oil pan 21 is fixedly connected at the outer wall left end of lubricating box 2, the inside of engine body 1 is provided with the heat dissipation assembly that carries out heat dissipation to engine, the outer wall front end of engine body 1 is installed with the air guide assembly that increases the heat dissipation efficiency;Air guide assembly includes air guide channel 3, air guide channel 3 is set in the inner wall of engine body 1, the tail end of air guide channel 3 is fixedly connected with air guide pipe 31, the tail end of air guide pipe 31 is fixedly connected in the inner wall of oil pan 21, the inner wall front end of air guide channel 3 is rotatably connected with mounting ring 32, the outer wall of mounting ring 32 is fixedly connected with external plate 33, the inner wall of mounting ring 32 is equidistantly fixedly connected with multiple air guide vanes 34, external plate 33 is screw-connected in the outer wall front end of engine body 1 through multiple mounting bolts 35 of outer wall;

[0031] The utility model discloses a four-stroke engine air guide heat dissipation structure, including engine body 1, the outer wall left end of engine body 1 is installed with lubricating box 2, lubricating box 2 includes oil pan 21, oil pan 21 is fixedly connected at the outer wall left end of lubricating box 2, the inside of engine body 1 is provided with the heat dissipation assembly that carries out heat dissipation to engine, the outer wall front end of engine body 1 is installed with the air guide assembly that increases the heat dissipation efficiency;Air guide assembly includes air guide channel 3, air guide channel 3 is set in the inner wall of engine body 1, the tail end of air guide channel 3 is fixedly connected with air guide pipe 31, the tail end of air guide pipe 31 is fixedly connected in the inner wall of oil pan 21, the inner wall front end of air guide channel 3 is rotatably connected with mounting ring 32, the outer wall of mounting ring 32 is fixedly connected with external plate 33, the inner wall of mounting ring 32 is equidistantly fixedly connected with multiple air guide vanes 34, external plate 33 is screw-connected in the outer wall front end of engine body 1 through multiple mounting bolts 35 of outer wall;

[0032] Please refer to Figure 3 And Figure 4The heat dissipation assembly comprises a plurality of first heat dissipation fins 4, which are fixedly connected to the inner wall of the air guide channel 3 at equal intervals with the center of the air guide channel 3 as the axis, and the first heat dissipation fins 4 are arranged along the track of the air guide channel 3, and the outer wall of the first heat dissipation fin 4 is staggered and provided with a plurality of corrugations 41, and the plurality of first heat dissipation fins 4 form a triangular channel; and the outer wall of the middle part of the engine body 1 is fixedly connected with a plurality of second heat dissipation fins 7.

[0033] The first heat dissipation fin 4 is arranged on the inner wall of the air guide channel 3, the first heat dissipation fin 4 is staggered and arranged in a wave shape to form a triangular channel, which can increase the surface area of air in contact with the heat dissipation fin, improve the heat dissipation efficiency, and cooperate with the second heat dissipation fin 7 on the outside to realize heat exchange and further improve the heat dissipation effect.

[0034] Please refer to Figure 1 and Figure 5 The connecting part of the oil pan 21 and the air guide channel 31 is fixedly connected with a heat dissipation grid 6; the inner wall of the oil pan 21 is fixedly connected with an air guide plate 5, and the inner wall of the air guide plate 5 is provided with a plurality of air guide grooves 8 at equal intervals;

[0035] The design of the heat dissipation grid 6 can allow cooling air to pass through and take away the heat of the lubricating oil; the air guide plate 5 guides the cooling air to flow uniformly over the surface of the lubricating oil, avoiding local overheating, and the material of the oil pan 21 can be selected as aluminum alloy material, which has good thermal conductivity, thereby improving the heat dissipation efficiency.

[0036] Working principle: when the engine is in actual use, the air guide channel 3 is arranged in the inside of the engine body 1 and passes through the heat generating part to the lubricating tank 2, cooling air enters from the inlet of the air guide channel 3, an installation ring 32 and an external plate 33 are installed at the front end of the inner wall of the air guide channel 3 through an installation bolt 35, a plurality of air guide vanes 34 are fixedly connected in the installation ring 32 at equal intervals, the air guide vanes 34 can form a vortex in the inside of the engine, further enhancing the heat dissipation effect, the cooling air passes through the inside of the engine through the air guide channel 3, cooperates with the first heat dissipation fin 4 to preliminarily transfer the heat, the transferred heat is discharged through the second heat dissipation fin 7, thereby realizing heat exchange through the inside and outside design of the first heat dissipation fin 4 and the second heat dissipation fin 7, and the outer wall of the first heat dissipation fin 4 is designed in a staggered wave shape, a triangular channel is formed in the air guide channel 3 through the plurality of first heat dissipation fins 4, thereby increasing the surface area of air in contact with the heat dissipation fin and improving the heat dissipation efficiency, and the design of the air guide assembly and the heat dissipation assembly can meet the air guiding and heat dissipation use requirements.

[0037] The above merely describes a preferred embodiment of the present application; the scope of protection of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the scope of protection of the present application.

Claims

1. A cooling structure for a four-stroke engine, comprising an engine body (1), characterized in that: A lubrication box (2) is installed on the left side of the outer wall of the engine body (1). The lubrication box (2) includes an oil pan (21) which is fixedly connected to the left side of the outer wall of the lubrication box (2). A heat dissipation component for cooling the engine is provided inside the engine body (1). An air guide component for increasing heat dissipation efficiency is installed on the front end of the outer wall of the engine body (1).

2. The airflow cooling structure for a four-stroke engine according to claim 1, characterized in that: The air guide assembly includes an air guide channel (3), which is opened on the inner wall of the engine body (1). An air guide pipe (31) is fixedly connected to the end of the air guide channel (3). The end of the air guide pipe (31) is fixedly connected to the inner wall of the oil pan (21). An installation ring (32) is rotatably connected to the front end of the inner wall of the air guide channel (3). An outer plate (33) is fixedly connected to the outer wall of the installation ring (32). Multiple air guide blades (34) are fixedly connected at equal intervals to the inner wall of the installation ring (32). The outer plate (33) is threadedly connected to the front end of the outer wall of the engine body (1) by multiple mounting bolts (35) on the outer wall.

3. The airflow cooling structure for a four-stroke engine according to claim 1, characterized in that: The heat dissipation assembly includes a plurality of first heat sinks (4), which are fixedly connected at equal intervals to the inner wall of the air guide channel (3) with the center of the air guide channel (3) as the axis. The first heat sinks (4) are arranged along the trajectory of the air guide channel (3), and the outer wall of the first heat sinks (4) is staggered with a plurality of corrugations (41). The plurality of first heat sinks (4) form a triangular channel.

4. The airflow cooling structure for a four-stroke engine according to claim 2, characterized in that: A heat dissipation fin (6) is fixedly connected at the connection between the oil pan (21) and the air duct (31).

5. The airflow cooling structure for a four-stroke engine according to claim 1, characterized in that: The inner wall of the oil pan (21) is fixedly connected to a guide plate (5), and the inner wall of the guide plate (5) is provided with multiple guide grooves (8) at equal intervals.

6. The airflow cooling structure for a four-stroke engine according to claim 1, characterized in that: Multiple second heat sinks (7) are fixedly connected to the middle of the outer wall of the engine body (1).

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