A manifold type oil cooler for diesel engines

Abstract

This utility model relates to the field of diesel engine cooling, specifically a manifold type oil cooler for diesel engines. It includes a housing with several heat exchange tubes inside. An outer tube and several cooling fins are fixedly installed on the outer wall of each heat exchange tube, with the cooling fins all located within the outer tube's inner cavity. An inner tube is installed through the inner side of each heat exchange tube, with most of the inner tube located within the heat exchange tube's inner cavity. This utility model employs a triple-nested structure of "inner tube + heat exchange tube + outer tube," combined with the cooling fins on the outer wall of the heat exchange tubes, forming a bidirectional heat exchange mode—cooling water in the inner tube exchanges heat from the inside of the engine oil to the outside, while cooling water in the outer tube exchanges heat from the outside of the engine oil to the inside. Simultaneously, the cooling fins increase the heat exchange contact area, solving the problem of the traditional cooler's single heat dissipation direction, significantly improving heat transfer efficiency, and ensuring the engine oil cools down quickly to a suitable operating temperature.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine cooling, specifically a manifold type oil cooler for diesel engines. Background Technology

[0002] The oil cooler is a key component of the diesel engine lubrication system. Its core function is to cool the circulating engine oil, ensuring it remains within a suitable operating temperature range. This guarantees the oil's lubricating performance, reduces wear on internal engine components, and extends the diesel engine's lifespan. Existing tubular oil coolers for diesel engines operate by having hot oil enter the heat exchange tubes inside the casing through the inlet. The oil's heat is conducted to the cooling water through the tube walls, which then absorbs the heat and is discharged, thus lowering the oil temperature. However, in actual use, the oil flowing within the heat exchange tubes can only dissipate heat through the tube walls, resulting in a unidirectional and inefficient heat dissipation. Furthermore, a temperature gradient exists between the oil near and away from the tube walls, making it difficult for the hot oil in the core area to quickly transfer heat to the tube walls. This leads to uneven oil temperature distribution after cooling, with some areas remaining at a high temperature, affecting lubrication. Therefore, we propose a manifold-type oil cooler for diesel engines. Utility Model Content

[0003] The purpose of this utility model is to provide a manifold type oil cooler for diesel engines, including a housing, a plurality of heat exchange tubes in the inner cavity of the housing, an outer tube and a plurality of heat dissipation teeth fixedly installed on the outer wall of the heat exchange tubes, the heat dissipation teeth being located in the inner cavity of the outer tubes, an inner tube being installed through the inner side of the heat exchange tubes, most of the inner tube being located in the inner cavity of the heat exchange tubes, the plurality of heat exchange tubes being fixedly connected to and connected to an oil pipe, the plurality of heat exchange tubes being fixedly connected to and connected to an oil collection pipe, the outer tubes and the inner tubes being connected to cooling water through an inlet assembly, and the outer tubes and the inner tubes being connected to and discharged from the cooling water through an outlet assembly.

[0004] Preferably, the liquid inlet assembly includes a liquid inlet pipe that penetrates the inner side of the housing, with the liquid inlet of the liquid inlet pipe located on the outer side of the housing. The liquid inlet pipe is fixedly connected to and connected to several distribution pipes, and the two liquid outlets of the distribution pipes are fixedly connected to and connected to an outer pipe and an inner pipe connected by the same heat exchange pipe.

[0005] Preferably, the liquid outlet assembly includes a liquid outlet pipe that penetrates the inner side of the housing and has its outlet located on the outer side of the housing. The liquid outlet pipe is fixedly connected to and connected to several inner pipes, and several connecting pipes are fixedly connected to and connected to the liquid outlet pipe. The connecting pipes are fixedly connected to and connected to an outer pipe.

[0006] Preferably, the outer wall of the outer tube is fixedly connected to a mounting bracket, and the mounting bracket is fixedly installed on the inner wall of the housing.

[0007] Preferably, the oil pipe passes through the inside of the housing, and the oil inlet of the oil pipe is located on the outside of the housing.

[0008] Preferably, the oil collecting pipe passes through the inner side of the housing, and the oil outlet of the oil collecting pipe is located on the outer side of the housing.

[0009] Preferably, the top of the housing is open, and a top cover is fixedly installed on the top of the housing by bolts.

[0010] Preferably, four sets of fixed supports are fixedly installed on the outer wall of the shell, and the four sets of fixed supports are distributed in a rectangular shape around the shell.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model adopts a triple nested structure of "inner tube + heat exchange tube + outer tube," combined with the heat dissipation teeth on the outer wall of the heat exchange tube, forming a bidirectional heat exchange mode—the cooling water in the inner tube exchanges heat from the inside of the engine oil to the outside, and the cooling water in the outer tube exchanges heat from the outside of the engine oil to the inside. Simultaneously, the heat dissipation teeth increase the heat exchange contact area, solving the problem of the traditional cooler's single heat dissipation direction, significantly improving heat transfer efficiency, and ensuring that the engine oil cools down quickly to a suitable operating temperature. In use, the cooling water is distributed to each outer and inner tube through the distributor pipe of the inlet assembly, and then discharged centrally through the through-pipe and outlet pipe of the outlet assembly, ensuring that each heat exchange unit works synchronously and efficiently, guaranteeing stable engine oil lubrication performance, thereby reducing wear on internal engine components and extending the service life of the diesel engine. Attached Figure Description

[0012] Figure 1 Schematic diagram of the interior of the shell Figure 1 ; Figure 2 Schematic diagram of the interior of the shell Figure 2 ; Figure 3 This is a schematic diagram of the structure of this utility model; Figure 4 This is a schematic diagram of the interior of the outer tube; Figure 5 This is a schematic diagram of the internal structure of the heat exchanger tube. In the diagram: 1. Shell; 2. Heat exchanger tube; 3. Outer tube; 4. Heat dissipation fins; 5. Inner tube; 6. Oil pipe; 7. Oil collecting pipe; 8. Liquid inlet assembly; 801. Liquid inlet pipe; 802. Liquid distributor pipe; 9. Liquid outlet assembly; 901. Liquid outlet pipe; 902. Through pipe; 10. Mounting bracket; 11. Top cover; 12. Fixed support. Detailed Implementation

[0013] 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.

[0014] Reference Figure 1 - Figure 5 This utility model discloses a manifold type oil cooler for diesel engines, comprising a housing 1, an inner cavity of which contains a plurality of heat exchange tubes 2, an outer tube 3 and a plurality of heat dissipation teeth 4 fixedly installed on the outer wall of each heat exchange tube 2, the heat dissipation teeth 4 being located within the inner cavity of the outer tube 3, an inner tube 5 being installed through the inner side of each heat exchange tube 2, most of the inner tube 5 being located within the inner cavity of the heat exchange tube 2, a plurality of heat exchange tubes 2 being fixedly connected to and connected to an oil pipe 6, a plurality of heat exchange tubes 2 being fixedly connected to and connected to an oil collection pipe 7, the outer tube 3 and the inner tube 5 being connected to cooling water through an inlet assembly 8, and the outer tube 3 and the inner tube 5 being connected to and discharged from cooling water through an outlet assembly 9.

[0015] The liquid inlet assembly 8 includes a liquid inlet pipe 801, which penetrates the inner side of the housing 1. The liquid inlet of the liquid inlet pipe 801 is located on the outer side of the housing 1. The liquid inlet pipe 801 is fixedly connected to and connected to several distribution pipes 802. The two outlets of the distribution pipes 802 are fixedly connected to and connected to the outer pipe 3 and the inner pipe 5 connected by the same heat exchange pipe 2. In use, the liquid inlet of the liquid inlet pipe 801 is connected to the cooling system of the diesel engine, and the cooling water will enter the liquid inlet pipe 801. The cooling water in the liquid inlet pipe 801 flows into the outer pipe 3 and the inner pipe 5 respectively through the distribution pipes 802.

[0016] The liquid outlet assembly 9 includes a liquid outlet pipe 901, which penetrates the inner side of the housing 1. The outlet of the liquid outlet pipe 901 is located on the outer side of the housing 1. The liquid outlet pipe 901 is fixedly connected to and connected to several inner pipes 5. Several connecting pipes 902 are fixedly connected to and connected to the liquid outlet pipe 901. The connecting pipes 902 are fixedly connected to and connected to the outer pipe 3. In use, the outlet of the liquid outlet pipe 901 is connected to the cooling system of the diesel engine. Cooling water in the inner pipes 5 enters the liquid outlet pipe 901, and cooling water in the outer pipe 3 enters the liquid outlet pipe 901 through the connecting pipes 902.

[0017] The outer wall of the outer tube 3 is fixedly connected to the mounting bracket 10, which is fixedly installed on the inner wall of the housing 1; the mounting bracket 10 enables the outer tube 3 and other structures to be stably installed in the inner cavity of the housing 1.

[0018] The oil pipe 6 penetrates the inside of the housing 1, and the oil inlet of the oil pipe 6 is located on the outside of the housing 1; in use, the oil inlet of the oil pipe 6 is connected to the oil system of the diesel engine.

[0019] The oil collection pipe 7 penetrates the inner side of the housing 1, and the oil outlet of the oil collection pipe 7 is located on the outer side of the housing 1; in use, the oil outlet of the oil collection pipe 7 is connected to the oil system of the diesel engine.

[0020] The top of the housing 1 is open, and a top cover 11 is fixed to the top of the housing 1 by bolts. After the top cover 11 is removed, the internal mechanism of the housing 1 can be maintained and repaired through the open top of the housing 1.

[0021] Four sets of fixed supports 12 are fixedly installed on the outer wall of the housing 1. The four sets of fixed supports 12 are distributed in a rectangular shape around the housing 1. The entire cooler can be fixed together with the diesel engine through the four sets of fixed supports 12.

[0022] The working principle of this utility model is as follows: When cooling is required, the engine oil used by the diesel engine flows into several heat exchange tubes 2 through the oil pipe 6. The cooling water used by the diesel engine flows to the outer tube 3 and the inner tube 5 through the liquid inlet assembly 8. At this time, the cooling water inside the outer tube 3 will wrap around the outside of the heat exchange tube 2 and exchange heat with the engine oil inside the heat exchange tube 2 through the heat dissipation teeth 4, and the heat exchange will proceed from the outside to the inside. The engine oil inside the heat exchange tube 2 will wrap around the outside of the inner tube 5 inside the heat exchange tube 2. The inner tube 5 is also made of the same material as the heat exchange tube 2, and the engine oil inside the heat exchange tube 2 can also exchange heat through the inner tube 5, and the heat exchange will proceed from the inside to the outside. The oil that has undergone heat exchange in heat exchange tube 2 will flow into oil collection pipe 7 and be discharged from oil collection pipe 7; the cooling water that has undergone heat exchange in inner tube 5 will flow into outlet pipe 901, and the cooling water that has undergone heat exchange in outer tube 3 will flow into outlet pipe 901 through through pipe 902. Finally, all the cooling water that has undergone heat exchange will be discharged from outlet pipe 901. The above description is a further detailed explanation of this utility model in conjunction with specific embodiments. It should not be considered that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope defined by the claims submitted by this utility model.

Claims

1. A manifold type oil cooler for diesel engines, comprising a housing (1), characterized in that: The shell (1) has several heat exchange tubes (2) inside. An outer tube (3) and several heat dissipation teeth (4) are fixedly installed on the outer wall of the heat exchange tube (2). The heat dissipation teeth (4) are all located in the inner cavity of the outer tube (3). An inner tube (5) is installed through the inner side of the heat exchange tube (2). Most of the inner tube (5) is located in the inner cavity of the heat exchange tube (2). Several heat exchange tubes (2) are fixedly connected to and connected to oil pipes (6). Several heat exchange tubes (2) are fixedly connected to and connected to oil collection pipes (7). The outer tube (3) and the inner tube (5) are connected to cooling water through the liquid inlet assembly (8). The outer tube (3) and the inner tube (5) are discharged from the cooling water through the liquid outlet assembly (9).

2. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: The liquid inlet assembly (8) includes a liquid inlet pipe (801), which penetrates the inner side of the housing (1). The liquid inlet of the liquid inlet pipe (801) is located on the outer side of the housing (1). The liquid inlet pipe (801) is fixedly connected to and connected to several liquid distribution pipes (802). The two liquid outlets of the liquid distribution pipes (802) are fixedly connected to and connected to the outer pipe (3) and inner pipe (5) connected by the same heat exchange pipe (2).

3. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: The liquid outlet assembly (9) includes a liquid outlet pipe (901), which penetrates the inner side of the housing (1). The outlet of the liquid outlet pipe (901) is located on the outer side of the housing (1). The liquid outlet pipe (901) is fixedly connected to and connected to several inner pipes (5). Several connecting pipes (902) are fixedly connected to and connected to the liquid outlet pipe (901). The connecting pipes (902) are fixedly connected to and connected to the outer pipe (3).

4. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: The outer wall of the outer tube (3) is fixedly connected to the mounting bracket (10), and the mounting bracket (10) is fixedly installed on the inner wall of the shell (1).

5. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: The oil pipe (6) penetrates the inside of the housing (1), and the oil inlet of the oil pipe (6) is located on the outside of the housing (1).

6. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: The oil collecting pipe (7) penetrates the inside of the housing (1), and the oil outlet of the oil collecting pipe (7) is located on the outside of the housing (1).

7. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: The top of the housing (1) is open, and a top cover (11) is fixedly installed on the top of the housing (1) by bolts.

8. A manifold type oil cooler for diesel engines according to claim 1, characterized in that: Four sets of fixed supports (12) are fixedly installed on the outer wall of the shell (1), and the four sets of fixed supports (12) are distributed in a rectangular shape around the shell (1).

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