Heat dissipation type engine flywheel assembly

Abstract

The utility model discloses a heat dissipation type engine flywheel assembly, and belongs to the field of engine parts, the flywheel assembly comprises a flywheel body and a flywheel gear ring fixedly arranged at one end of the flywheel body, and a heat dissipation mechanism is arranged on the flywheel body; the heat dissipation mechanism comprises a plurality of layers of spirally-distributed heat dissipation fins arranged at the end, away from the flywheel gear ring, of the peripheral face of the flywheel body, the heat dissipation fins spirally extend from the center of the flywheel to the edge of the flywheel, and the spiral directions of every two adjacent layers of heat dissipation fins are opposite. The heat dissipation area is greatly increased through the multi-layer spiral heat dissipation fins, compared with a traditional plane heat dissipation fin, the contact area with air can be remarkably increased, and then the heat dissipation speed is increased. Meanwhile, due to complex convection, air can make more sufficient contact with the cooling fins, more heat is taken away, the working temperature of the flywheel is effectively reduced, and the reliability and stability of the engine are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine components, and particularly relates to a heat dissipation type engine flywheel assembly. BACKGROUND

[0002] In the existing engine flywheel assembly, a large amount of heat is generated due to friction and the like during high-speed rotation of the flywheel. However, the common flywheel heat dissipation mode has limited effect, which easily leads to excessively high flywheel temperature, and further affects the performance and service life of the engine. For example, the traditional flywheel mainly relies on natural heat dissipation, and the heat dissipation efficiency is low, which cannot meet the heat dissipation demand of high-performance engines. Some improved types simply increase the heat dissipation fins, but there are deficiencies in the layout of the heat dissipation fins and the overall heat dissipation with the flywheel, and the heat accumulation problem cannot be effectively solved.

[0003] Therefore, the present application provides a heat dissipation type engine flywheel assembly to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to provide a heat dissipation type engine flywheel assembly to solve the problem of poor heat dissipation effect of the engine flywheel in the prior art, and improve the performance and stability of the engine.

[0005] To achieve the above object, the present application provides the following technical scheme: a heat dissipation type engine flywheel assembly, comprising a flywheel body and a flywheel gear ring fixedly arranged at one end of the flywheel body, and a heat dissipation mechanism arranged on the flywheel body.

[0006] The heat dissipation mechanism comprises a plurality of layers of heat dissipation fins arranged in a spiral shape on the outer circumferential surface of the flywheel body away from one end of the flywheel gear ring, the heat dissipation fins extend spirally from the center of the flywheel to the edge, and the spiral directions of the adjacent two layers of heat dissipation fins are opposite. When the flywheel rotates, air will flow outward under the action of centrifugal force. The plurality of layers of heat dissipation fins arranged in a spiral shape and having opposite spiral directions will change the flow direction of the air, so that the air forms complex vortex and convection between the fins. For example, the fins spiraling clockwise in the first layer will guide the air to flow clockwise, and the fins spiraling counterclockwise in the second layer will change the direction of the air, forming staggered air flow. The complex air flow movement increases the contact time and contact area of the air and the fins, thereby improving the heat exchange efficiency and quickly taking away the heat.

[0007] Preferably, in order to ensure that the flywheel body has high strength and can also conduct heat: the flywheel body is made of high-strength aluminum alloy material. High-strength aluminum alloy material has sufficient strength and hardness, can withstand the huge impact force and torque of the flywheel during engine operation, and ensures the normal operation of the flywheel. At the same time, the good thermal conductivity of aluminum alloy can quickly transfer the heat generated inside the flywheel to the outer peripheral heat dissipation fins, providing a basic condition for heat dissipation. The density of aluminum alloy is relatively small, and the use of aluminum alloy to make the flywheel body can reduce the weight of the entire flywheel assembly, reduce the load of the engine, and improve the power performance and fuel economy of the engine.

[0008] Preferably, in order to improve the heat dissipation effect: the heat dissipation fins are made of copper alloy material. Copper alloy has extremely high thermal conductivity and can quickly dissipate the heat transferred from the flywheel body to the surrounding air. Compared with other materials of heat dissipation fins, copper alloy fins can take away heat in a shorter time, further improving the efficiency of the entire heat dissipation system. Copper alloy has good thermal stability at high temperature, can maintain its thermal conductivity and mechanical properties in long-term high-temperature working environment, and ensures the long-term reliability of the heat dissipation system.

[0009] Preferably, in order to facilitate the installation of the heat dissipation fins: grooves are provided on the flywheel body, the roots of the heat dissipation fins are embedded in the grooves, and the heat dissipation fins are fixedly connected with the flywheel body by welding. The close combination reduces the thermal resistance between the heat dissipation fins and the flywheel body, so that the heat can be more smoothly transferred from the flywheel body to the heat dissipation fins, improving the heat transfer efficiency. The welding fixing mode enhances the stability of the heat dissipation fins during high-speed rotation of the flywheel, prevents the fins from loosening or falling off due to centrifugal force and other factors, and ensures the reliability and safety of the heat dissipation system.

[0010] Preferably, in order to improve the heat dissipation effect of the flywheel body: the flywheel body is provided with radially and circumferentially interconnected heat dissipation channels in the inside, and the heat dissipation channels are filled with high-thermal-conductivity liquid medium, such as low-boiling-point coolant. The presence of liquid medium increases a new heat dissipation way, through evaporation and circulation of the liquid, the heat inside the flywheel can be quickly transferred to the edge heat dissipation fins, further improving the heat dissipation effect. Especially during high-load operation of the engine, the temperature of the flywheel can be effectively reduced, avoiding performance degradation and component damage due to overheating. The radially and circumferentially interconnected heat dissipation channels enable the liquid medium to circulate in the entire flywheel, evenly distributing the heat to all parts, avoiding local overheating, and improving the overall thermal stability of the flywheel.

[0011] The application greatly increases the heat dissipation area through the multi-layer spiral heat dissipation fins, which can significantly improve the contact area with air compared with the traditional flat heat dissipation fins, thereby accelerating the heat dissipation speed. At the same time, the complex convection enables air to be more fully in contact with the heat dissipation fins, carrying away more heat, effectively reducing the working temperature of the flywheel, and improving the reliability and stability of the engine. Regardless of the change of the rotation speed of the flywheel, the spiral staggered design can guide the air to form convection, and maintain good heat dissipation effect under different engine operating conditions.

[0012] The presence of the liquid medium of the application increases a new heat dissipation way, which can quickly transfer the heat inside the flywheel to the edge heat dissipation fins through the evaporation and circulation of the liquid, further improving the heat dissipation effect. Especially during high load operation of the engine, the temperature of the flywheel can be effectively reduced to avoid performance degradation and component damage due to overheating. The heat dissipation channels are radially and circumferentially connected to each other, so that the liquid medium can circulate in the entire flywheel, uniformly distributing the heat to each part, avoiding local overheating, and improving the overall thermal stability of the flywheel. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of a heat dissipation engine flywheel assembly;

[0014] Figure 2 is a structural schematic diagram of another side of Figure 1 ;

[0015] Figure 3 is a structural schematic diagram of a groove on the flywheel body;

[0016] Figure 4 is a structural sectional view of Figure 1 ;

[0017] In the drawings:

[0018] 1, flywheel body; 11, groove; 12, heat dissipation channel; 121, liquid medium; 2, flywheel ring gear; 3, heat dissipation mechanism; 31, heat dissipation fin. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0020] Embodiment 1

[0021] This embodiment provides a heat-dissipating engine flywheel assembly, such as Figures 1-4 As shown, the flywheel assembly includes a flywheel body 1 and a flywheel gear ring 2 fixedly disposed at one end of the flywheel body 1. A heat dissipation mechanism 3 is provided on the flywheel body 1.

[0022] The heat dissipation mechanism 3 includes multiple layers of spirally distributed heat dissipation fins 31 disposed on the outer peripheral surface of the flywheel body 1 at the end away from the flywheel gear ring 2. The heat dissipation fins 31 extend spirally from the center of the flywheel to the edge, and the spiral directions of adjacent layers of heat dissipation fins 31 are opposite. The multi-layered spiral design of the heat dissipation fins 31 greatly increases the heat dissipation area, significantly improving the contact area with air compared to traditional flat heat dissipation fins, thereby accelerating the heat dissipation rate. At the same time, the complex convection allows the air to come into more full contact with the heat dissipation fins 31, carrying away more heat, effectively reducing the operating temperature of the flywheel, and improving the reliability and stability of the engine. Regardless of the rotational speed of the flywheel, this spiral staggered design can guide the air to form convection, maintaining good heat dissipation under different engine operating conditions. When the flywheel rotates, the air will flow outward under the action of centrifugal force. The multi-layered spiral heat dissipation fins 31 with opposite spiral directions change the direction of air flow, causing it to form complex vortices and convection between the fins. For example, the first layer of clockwise spiral fins guides the air to flow clockwise, while the second layer of counterclockwise spiral fins changes the direction of the air, creating staggered airflow. This complex airflow motion increases the contact time and contact area between the air and the fins, thereby improving heat exchange efficiency and quickly removing heat.

[0023] To ensure both high strength and thermal conductivity, the flywheel body 1 is made of high-strength aluminum alloy. High-strength aluminum alloy possesses sufficient strength and hardness to withstand the enormous impact and torque experienced by the flywheel during engine operation, ensuring its normal operation. Simultaneously, the excellent thermal conductivity of aluminum alloy rapidly transfers heat generated inside the flywheel to the outer cooling fins 31, providing a foundation for heat dissipation. The relatively low density of aluminum alloy reduces the overall weight of the flywheel assembly, lowering the engine load and improving engine power and fuel economy. The regular atomic arrangement within aluminum alloy allows for relatively free electron movement. When heat is generated inside the flywheel due to friction, it is transferred through the aluminum alloy via lattice vibration and electron conduction. Due to the high electron mobility of aluminum alloy, heat can be quickly transferred from high-temperature areas to low-temperature areas, i.e., from the inside of the flywheel to the outer periphery in contact with the cooling fins 31, achieving rapid heat conduction.

[0024] To improve the heat dissipation effect: the heat dissipation fins 31 are made of copper alloy material. Copper alloy has very high thermal conductivity, which can quickly dissipate the heat transferred from the flywheel body 1 to the surrounding air. Compared with other materials of heat dissipation fins 31, copper alloy fins can take away heat in a shorter time, further improving the efficiency of the entire heat dissipation system. Copper alloy has good thermal stability at high temperature, which can maintain its thermal conductivity and mechanical properties in long-term high-temperature working environment, ensuring the long-term reliability of the heat dissipation system. The metal bond in copper alloy is strong, and the atomic bond is tight, and the crystal lattice vibration has strong ability to transfer heat. When heat is transferred to the heat dissipation fins 31, the atoms inside the copper alloy rapidly spread the heat to the surface of the fins through strong vibration. At the same time, the good electrical conductivity of copper alloy means that electrons can move quickly in it, assisting heat conduction. On the surface of the fins, heat is transferred to the surrounding air through convection and radiation. Due to the high thermal conductivity of copper alloy, it can continuously transport internal heat to the surface and maintain efficient heat dissipation process.

[0025] To facilitate the installation of the heat dissipation fins 31: a groove 11 is provided on the flywheel body 1, the root of the heat dissipation fins 31 is embedded in the groove 11, and the heat dissipation fins 31 are fixedly connected with the flywheel body 1 by welding. The close combination reduces the thermal resistance between the heat dissipation fins 31 and the flywheel body 1, so that heat can be more smoothly transferred from the flywheel body 1 to the heat dissipation fins 31, improving the heat transfer efficiency. The welding fixation mode enhances the stability of the heat dissipation fins 31 during high-speed rotation of the flywheel, preventing the fins from loosening or falling off due to centrifugal force and other factors, ensuring the reliability and safety of the heat dissipation system. During the welding process, the root of the heat dissipation fins 31 and the groove 11 part of the flywheel body 1 are fused with each other, forming a firm metallurgical bond. From the perspective of heat transfer, this close combination reduces the interfacial thermal resistance in the heat transfer process, so that heat can be more effectively transferred from the flywheel body 1 to the heat dissipation fins 31. In terms of mechanical stability, welding connection provides sufficient strength to resist the centrifugal force generated during high-speed rotation of the flywheel, ensuring that the heat dissipation fins 31 remain in a stable installation state during the entire working process.

[0026] Example 2

[0027] Different from embodiment 1, in order to improve the heat dissipation effect of the flywheel body 1: the inner radial and circumferential directions of the flywheel body 1 are respectively provided with heat dissipation channels 12 that are in communication with each other, and the heat dissipation channels 12 are filled with a liquid medium 121 with high thermal conductivity, such as a low-boiling cooling liquid. The presence of the liquid medium 121 increases a new heat dissipation path, through the evaporation and circulating flow of the liquid, the heat inside the flywheel can be quickly transferred to the edge heat dissipation fins 31, further improving the heat dissipation effect. Especially when the engine is working under high load, it can effectively reduce the temperature of the flywheel, avoid performance degradation and component damage due to overheating. The heat dissipation channels 12 are in communication with each other in the radial and circumferential directions, so that the liquid medium 121 can circulate in the entire flywheel, evenly distributing heat to each part and avoiding local overheating, improving the overall thermal stability of the flywheel. When the temperature of the flywheel rises, the low-boiling cooling liquid in the heat dissipation channels 12 absorbs heat and evaporates into a gaseous state. Because the density of the gas is less than that of the liquid, the gaseous cooling liquid will rise in the channel and flow to the edge area with lower temperature. At the edge, the gaseous cooling liquid liquefies and releases latent heat of vaporization, and the heat is dissipated to the air through the heat dissipation fins 31. The liquefied cooling liquid returns to the area with higher temperature in the flywheel under the action of gravity or pressure difference in the channel, continues to absorb heat, and so on, forming an efficient heat transfer cycle that continuously transfers heat from the flywheel interior to the exterior.

[0028] It should be noted that the various standard parts used in the present application can be obtained from the market, and the non-standard parts can be specially customized. The connection method used in the present application is also a very common means in the mechanical field, and will not be described here.

[0029] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical solutions and concepts of the present application within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A heat-dissipation engine flywheel assembly, comprising a flywheel body (1) and a flywheel ring gear (2) fixedly arranged at one end of the flywheel body (1), and a heat-dissipation mechanism (3) arranged on the flywheel body (1). characterized in that The heat-dissipation mechanism (3) comprises a plurality of layers of heat-dissipation fins (31) arranged in a spiral manner on the outer circumferential surface of the flywheel body (1) away from the flywheel ring gear (2), the heat-dissipation fins (31) extend spirally from the center of the flywheel to the edge, and the spiral directions of adjacent two layers of heat-dissipation fins (31) are opposite.

2. The heat dissipating engine flywheel assembly of claim 1, wherein: The flywheel body (1) is made of high-strength aluminum alloy material.

3. The heat dissipating engine flywheel assembly of claim 1, wherein: The heat-dissipation fins (31) are made of copper alloy material.

4. The heat dissipating engine flywheel assembly of claim 1, wherein: The flywheel body (1) is provided with a groove (11), the roots of the heat-dissipation fins (31) are embedded in the groove (11), and the heat-dissipation fins (31) are fixedly connected with the flywheel body (1) by welding.

5. The heat dissipating engine flywheel assembly of claim 1, wherein: The inside of the flywheel body (1) is respectively provided with heat-dissipation channels (12) communicating with each other in the radial and circumferential directions, and the heat-dissipation channels (12) are filled with liquid medium (121) with high thermal conductivity.

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