An oil cooler

Abstract

This utility model relates to the technical field of engine lubrication structure, and discloses an oil cooler, including a housing with a coolant outlet pipe and a coolant inlet pipe fixedly connected to its outer wall. A heat exchanger is disposed inside the housing, and a heat dissipation assembly is disposed inside the heat exchanger. The heat dissipation assembly includes a first heat sink, disposed inside the heat exchanger, and a second heat sink on one side of the outer wall of the first heat sink. The first and second heat sinks are arranged alternately. A heat dissipation groove is formed inside the first heat sink. A heat dissipation plate is fixedly connected to the upper surface of both the first and second heat sinks. The heat dissipation plate is elongated, and multiple heat dissipation blocks, which are star-shaped, are fixedly connected to its upper surface. In this utility model, by setting the first and second heat sinks in an alternate arrangement inside the heat exchanger, the internal heat exchange density is significantly improved, and the contact area with the coolant is effectively expanded.

Description

Technical Field

[0001] This utility model relates to the field of engine lubrication structure technology, and in particular to an oil cooler. Background Technology

[0002] As a key component of the vehicle engine lubrication system, the oil cooler's main function is to effectively cool the engine oil that heats up during operation by exchanging heat with the cooling medium, ensuring that the oil operates within a suitable temperature range and thus maintaining the stability of the engine's lubrication condition. With the continuous increase in engine power density and operating intensity, the temperature rise of engine oil under high load and high speed conditions becomes increasingly significant. If the cooling system cannot dissipate heat in time, it will lead to a decrease in oil viscosity, weakened lubrication performance, and even premature wear and failure of engine components.

[0003] Existing oil coolers typically employ shell-and-tube or plate-fin structures, allowing heat exchange between the two fluids while maintaining physical isolation through coolant and oil passages. The coolant, usually engine water, flows along the cooler's shell or fin structure, creating a temperature difference with the oil and transferring heat. Furthermore, to improve heat exchange efficiency, some designs incorporate a limited number of fins or heat sinks to increase localized heat exchange area. However, the overall heat exchange structure remains relatively fixed, with limited fin layout and restricted heat conduction paths. While these designs can meet certain cooling requirements, their heat dissipation performance is often constrained by the structure and unsuitable for higher thermal load conditions.

[0004] However, existing oil coolers generally suffer from limited heat dissipation area in their structural design, especially under high power and high load conditions, where their overall heat dissipation capacity is insufficient to meet actual needs. Due to their compact internal heat dissipation structure, the size and density of the fins are constrained by manufacturing processes and spatial layout, resulting in the inability to effectively transfer heat from the oil during the heat exchange process, leading to significant heat accumulation. This, in turn, causes the oil temperature to rise continuously, reducing cooling efficiency, and in severe cases, leading to decreased oil viscosity, poor lubrication performance, and even abnormal engine wear. These problems have become a major bottleneck restricting the further development of existing cooling technology. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an oil cooler, which aims to improve the existing structure's small heat dissipation area, which leads to low oil cooling efficiency, serious heat accumulation, and easy occurrence of excessively high oil temperature and decreased lubrication performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an oil cooler, comprising a housing, wherein a coolant outlet pipe and a coolant inlet pipe are fixedly connected to the outer wall of the housing, and a heat exchanger is provided inside the housing, wherein a heat dissipation component is provided inside the heat exchanger; The heat dissipation assembly includes a heat sink 1, which is disposed inside the heat exchanger. A heat sink 2 is disposed on one side of the outer wall of the heat sink 1. The heat sink 1 and the heat sink 2 are arranged alternately. A heat dissipation groove is formed inside the heat sink 1. A heat dissipation plate is fixedly connected to the upper surface of both the heat sink 1 and the heat sink 2. The heat dissipation plate is long and strip-shaped. Multiple heat dissipation blocks are fixedly connected to the upper surface of the heat dissipation plate. The heat dissipation blocks are star-shaped.

[0007] Furthermore, a pipe is fixedly connected to the inner wall of the heat exchanger, a spiral flow-slowing plate is fixedly connected to the inner wall of the pipe, a cavity is formed inside the pipe, a fixed ball is slidably connected to the inner wall of the pipe, a spring is fixedly connected to one end of the fixed ball, and a valve plate is fixedly connected to the other end of the spring.

[0008] Furthermore, a housing base is fixedly connected to the lower surface of the housing, and a mounting base is fixedly connected to the outer wall of the housing base.

[0009] Furthermore, an oil filter element is fixedly connected to the lower surface of the mounting base, and a housing is fixedly connected to the lower surface of the oil filter element.

[0010] Furthermore, the mounting base is provided with an oil outlet pipe and an oil inlet pipe.

[0011] Furthermore, the upper surface of the valve port plate is fixedly connected to the lower surface of the pipe.

[0012] Furthermore, the outer walls of both the oil outlet pipe and the oil inlet pipe are provided with multiple sets of heat sink 1 and heat sink 2.

[0013] Furthermore, the heat sink is positioned above the heat sink.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting staggered heat exchange fins one and two inside the heat exchanger, the internal heat exchange density is significantly improved, the contact area between the heat exchanger and the coolant is effectively expanded, and the heat exchange efficiency is improved. Heat exchange fin one has heat dissipation grooves inside, which not only enhances the surface area of ​​the fins but also accelerates the diffusion rate of heat inside. Long strip heat dissipation plates are fixedly connected above heat exchange fins one and two, and multiple star-shaped heat dissipation blocks are set on them. The multi-faceted edge structure further breaks the laminar flow state of the coolant, enhances turbulence and heat diffusion, and significantly improves the coolant's ability to remove heat from the fins. Through the above structural combination, the problems of insufficient heat exchange surface and low heat dissipation efficiency of traditional oil coolers are solved, the operating temperature of the oil is effectively controlled, and the thermal stability and operational reliability of the lubrication system are ensured.

[0015] 2. In this utility model, by setting a spiral flow buffer and a check valve structure inside the heat exchanger, the cooling efficiency and flow safety of the engine oil are improved simultaneously. The spiral flow buffer guides the engine oil to form a spiral turbulence path in the pipeline, prolonging the residence time of the engine oil in the heat exchanger and increasing the contact area between the engine oil and the inner wall of the pipeline, effectively improving the heat exchange efficiency. The check valve structure uses the linkage of a fixed ball and a spring to quickly close the valve port when the structure stops or the back pressure increases, preventing the engine oil from flowing back and ensuring the stable operation of the engine oil structure and the structural safety of the heat exchanger. The two work together to improve the adaptability and reliability of the cooler under different operating conditions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an oil cooler proposed in this utility model; Figure 2 This is a schematic diagram of a portion of the outer shell of an oil cooler proposed in this utility model; Figure 3 This is a schematic diagram of the heat exchanger section of an oil cooler proposed in this utility model; Figure 4 This is a schematic diagram of a portion of the heat sink structure of an oil cooler proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the pipe section structure of an oil cooler proposed in this utility model.

[0017] Legend: 1. Oil filter element; 2. Housing base; 3. Housing 1; 4. Coolant outlet pipe; 5. Coolant inlet pipe; 6. Oil outlet pipe; 7. Oil inlet pipe; 8. Radiator 1; 9. Heat exchanger; 10. Pipe; 11. Radiator plate; 12. Radiator block; 13. Radiator groove; 14. Radiator 2; 15. Spiral flow control plate; 16. Cavity; 17. Fixed ball; 18. Spring; 19. Valve port plate; 20. Housing 2; 21. Mounting base. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 - Figure 6 The present invention provides an embodiment of an oil cooler, comprising an outer shell 3, which constitutes the main outer shell of the oil cooler, covering a heat exchanger 9 and a heat dissipation assembly, forming a closed space for coolant flow, and providing an installation interface for other components such as coolant pipes and mounting grooves. A coolant outlet pipe 4 and a coolant inlet pipe 5 are fixedly connected to the outer wall of the outer shell 3. The heat exchanger 9 is installed inside the outer shell 3. The heat exchanger 9 is the core component for heat exchange between the oil and the coolant. It has internal structures such as a heat dissipation fin 8, a heat dissipation fin 14, and pipes 10, and is a functional unit for achieving efficient cooling of the oil. A heat dissipation assembly is installed inside the heat exchanger 9. The heat dissipation assembly includes a heat sink 8, which is one of the main heat dissipation elements and is located inside the heat exchanger 9, making full contact with the coolant. Its internal structure has heat dissipation grooves 13 connected to heat dissipation plates 11, significantly increasing the heat dissipation area and heat exchange efficiency. Heat sink 8 is located inside the heat exchanger 9, and a second heat sink 14 is located on one side of its outer wall. Heat sinks 8 and 14 are arranged alternately. Heat dissipation grooves 13 are located inside heat sink 8, on its inner wall, to increase the heat exchange area per unit volume of the fins, enhance the heat conduction capacity within the fins, and shorten the heat conduction path. Heat dissipation plates 11 are fixedly connected to the upper surfaces of both heat sink 8 and 14. The heat dissipation plates 11 are elongated, and multiple heat dissipation blocks 12 are fixedly connected to their upper surfaces. The heat dissipation blocks 12 are arranged in a star shape on the surface of the heat dissipation plates 11. Their three-dimensional structure can create local turbulence, breaking the laminar flow of the coolant, increasing the heat diffusion rate, and improving the overall cooling efficiency. The heat dissipation blocks 12 are star-shaped.

[0020] Reference Figure 1 - Figure 6 A pipe 10 is fixedly connected to the inner wall of the heat exchanger 9. A spiral flow buffer 15 is fixedly connected to the inner wall of the pipe 10. The spiral flow buffer 15 is installed on the inner wall of the pipe 10 to guide the oil to flow in a spiral path, prolonging the flow time and creating turbulence, thereby enhancing the heat exchange capacity between the oil and the wall of the pipe 10. There is a cavity 16 inside the pipe 10. A fixed ball 17 is slidably connected to the inner wall of the pipe 10. The fixed ball 17 is a key actuator of the check valve, which can open or close the valve port under pressure. When the system stops or back pressure occurs, it blocks the backflow of oil and ensures stable flow. A spring 18 is fixedly connected to one end of the fixed ball 17. The spring 18 is connected to the fixed ball 17 to provide closing force. When there is no flow pressure, the fixed ball 17 automatically resets to form a closed state to prevent oil backflow. A valve plate 19 is fixedly connected to the other end of the spring 18. A housing base 2 is fixedly connected to the lower surface of the housing 3. The housing base 2 serves as the support structure for the entire cooler device, supporting the heat exchanger 9 and the mounting base. 21 and its related components provide structural stability and achieve a secure connection with the equipment. The outer wall of the housing base 2 is fixedly connected to the mounting base 21. The lower surface of the mounting base 21 is fixedly connected to the oil filter element 1. The oil filter element 1 is used to perform preliminary filtration of the oil, removing impurities, particles and metal shavings, ensuring that the oil entering the cooling system is clean, and effectively extending the service life of the heat exchanger 9 and the entire lubrication system. The lower surface of the oil filter element 1 is fixedly connected to the housing 20. The mounting base 21 is equipped with an oil outlet pipe 6 and an oil inlet pipe 7. The upper surface of the valve plate 19 is fixedly connected to the lower surface of the pipe 10. The outer walls of the oil outlet pipe 6 and the oil inlet pipe 7 are equipped with multiple heat sinks 1-8 and 2-14. The heat sinks 2-14 and 1-8 are arranged alternately to fill the heat exchange gap, further improve the heat exchange density, strengthen the contact surface between the coolant and the heat dissipation components, and improve the overall cooling efficiency. The heat sink block 12 is located above the heat sink 1-8.

[0021] Working principle: By setting a heat dissipation component inside the heat exchanger 9, efficient heat dissipation of the engine oil is achieved. The heat dissipation component includes multiple heat sinks 8 and 14, with heat sinks 8 and 14 arranged alternately, which significantly increases the heat exchange area inside the heat exchanger 9. To further improve heat dissipation efficiency, heat sink 8 is provided with heat dissipation grooves 13, thereby expanding the fin surface area and accelerating the heat conduction speed. At the same time, long strip heat dissipation plates 11 are fixedly connected to the upper surfaces of heat sinks 8 and 14. Multiple star-shaped heat dissipation blocks 12 are provided on the upper surface of heat dissipation plates 11. This structure can enhance air turbulence and heat diffusion efficiency, further improving the overall heat dissipation performance. Through the above-mentioned staggered, grooved and multi-level three-dimensional structure design, the effective heat exchange contact surface of the heat dissipation component is greatly improved, and the heat conduction path is more reasonable. It effectively solves the problems of limited heat dissipation area, low heat exchange efficiency and insufficient cooling in the existing engine oil cooling structure, thereby reducing the operating temperature of the engine oil and ensuring the lubrication performance of the engine oil and the stable operation of the system. Furthermore, to further improve oil cooling efficiency and ensure oil flow stability, this device includes a pipe 10 inside the heat exchanger 9. The inner wall of the pipe 10 is equipped with a spiral flow-retardant plate 15 and a check valve structure. The spiral flow-retardant plate 15 is arranged along the inner wall of the pipe 10 to guide the oil to flow in a spiral path within the cavity 16, thereby extending the oil's residence time in the heat exchanger 9, creating turbulence, increasing the heat exchange area between the oil and the pipe 10 wall, and improving heat exchange efficiency. Simultaneously, to prevent oil from flowing out of the system during shutdown or under external pressure fluctuations... Backflow occurs when the oil flows backward. A fixed ball 17 is slidably connected to the inner wall of pipe 10. One end of the fixed ball 17 is connected to a spring 18, and the other end of the spring 18 is fixed to the valve port plate 19. When the oil flows normally, the pressure overcomes the force of the spring 18 and pushes the fixed ball 17 to open the valve port. When the structure stops or the back pressure increases, the spring 18 pushes the fixed ball 17 to close the valve port, blocking the backflow channel. This check valve structure and the slow flow structure work together to ensure that the oil can fully exchange heat in the cooler and effectively prevent oil backflow, thereby improving the safety and reliability of the structure operation.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil cooler, comprising a housing (3), characterized in that: The outer wall of the outer shell (3) is fixedly connected with a coolant outlet pipe (4) and a coolant inlet pipe (5). A heat exchanger (9) is provided inside the outer shell (3). A heat dissipation component is provided inside the heat exchanger (9). The heat dissipation assembly includes a heat sink 1 (8), which is disposed inside the heat exchanger (9). A heat sink 2 (14) is disposed on one side of the outer wall of the heat sink 1 (8). The heat sink 1 (8) and the heat sink 2 (14) are arranged alternately. A heat dissipation groove (13) is opened inside the heat sink 1 (8). A heat dissipation plate (11) is fixedly connected to the upper surface of both the heat sink 1 (8) and the heat sink 2 (14). The heat dissipation plate (11) is long and narrow. A plurality of heat dissipation blocks (12) are fixedly connected to the upper surface of the heat dissipation plate (11). The heat dissipation blocks (12) are star-shaped.

2. The oil cooler according to claim 1, characterized in that: The heat exchanger (9) has a pipe (10) fixedly connected to its inner wall. A spiral flow plate (15) is fixedly connected to the inner wall of the pipe (10). The pipe (10) has a cavity (16) inside. A fixed ball (17) is slidably connected to the inner wall of the pipe (10). A spring (18) is fixedly connected to one end of the fixed ball (17). A valve plate (19) is fixedly connected to the other end of the spring (18).

3. An oil cooler according to claim 2, characterized in that: The lower surface of the outer shell (3) is fixedly connected to the outer shell base (2), and the outer wall of the outer shell base (2) is fixedly connected to the mounting base (21).

4. An oil cooler according to claim 3, characterized in that: An oil filter element (1) is fixedly connected to the lower surface of the mounting base (21), and a second outer shell (20) is fixedly connected to the lower surface of the oil filter element (1).

5. An oil cooler according to claim 3, characterized in that: The mounting base (21) is provided with an oil outlet pipe (6) and an oil inlet pipe (7).

6. An oil cooler according to claim 2, characterized in that: The upper surface of the valve plate (19) is fixedly connected to the lower surface of the pipe (10).

7. An oil cooler according to claim 5, characterized in that: The outer walls of the oil outlet pipe (6) and the oil inlet pipe (7) are provided with multiple heat sinks (8) and (14).

8. An oil cooler according to claim 2, characterized in that: The heat sink (12) is positioned above the heat sink (8).

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