A dense folding double valve temperature control pipe type automobile oil cooler

Abstract

The application relates to a densely folded double-valve temperature control pipe type automobile oil cooler and relates to the technical field of automobile thermal management, which comprises a serpentine tube bundle and an auxiliary heat dissipation mechanism. The application is provided with upper densely folded aluminum heat dissipation fins, lower densely folded aluminum heat dissipation fins, a manual adjusting valve and an automatic temperature control valve. When the automobile power system is in a low-power running state, the manual adjusting valve can be rotated by an operator to adjust the initial oil flow to a smaller value according to actual heat dissipation requirements, at this time, the automatic temperature control valve is in an initial closed state, and heat dissipation is only carried out through the oil passage controlled by the manual adjusting valve, so that energy waste caused by excessive heat dissipation is avoided, when the power of the automobile power system is increased, the oil temperature gradually increases, when the oil temperature exceeds a set value, the bimetallic strip in the automatic temperature control valve is bent due to sensing of the oil temperature change, the valve rod is moved, so that additional flow channels are opened, and more oil flows into the serpentine tube bundle.

Description

Technical Field

[0001] This application relates to the field of automotive thermal management technology, and in particular to a densely folded dual-valve temperature-controlled tubular automotive oil cooler. Background Technology

[0002] As a key component of the automotive thermal management system, the performance of the automotive oil cooler directly affects the working efficiency and lifespan of the engine and transmission.

[0003] Regarding the aforementioned technologies, as automotive power systems develop towards higher power density, the heat dissipation capacity of traditional oil coolers can no longer meet the demands. At the same time, most mainstream oil coolers on the market adopt a single-path tube bundle and fixed-spacing heat sink design, and their heat dissipation efficiency is limited by surface area and airflow organization efficiency. Utility Model Content

[0004] The purpose of this application is to provide a densely folded dual-valve temperature-controlled tubular automotive oil cooler, which has the advantages of mechanical regulation of oil flow and temperature control, and solves the problems mentioned in the background art.

[0005] This application provides a densely folded dual-valve temperature-controlled tubular automotive oil cooler with the following technical solution: it includes a serpentine tube bundle and an auxiliary heat dissipation mechanism. The top of the serpentine tube bundle is connected to an upper densely folded aluminum heat sink, and the bottom of the serpentine tube bundle is connected to a lower densely folded aluminum heat sink. Two support blocks are fixedly connected to the bottom of the upper densely folded aluminum heat sink, and two support boxes are fixedly connected to the top of the lower densely folded aluminum heat sink. The support blocks are inserted into the inside of the support boxes, and two threaded holes are opened inside the support boxes and support blocks. Screws are threaded into the inside of the threaded holes. A manual adjustment valve is provided on the top surface of the serpentine tube bundle, and an automatic temperature control valve is fixedly installed on the side additional pipe of the serpentine tube bundle. By adopting the above technical solution, and by setting up upper and lower densely folded aluminum heat sinks, a manual regulating valve, and an automatic temperature control valve, when the vehicle's power system is in a low-power operating state, the manual regulating valve can be adjusted by the operator to adjust the initial oil flow to a smaller value according to the actual heat dissipation needs by rotating the valve core. At this time, the automatic temperature control valve is initially closed, and heat dissipation is only carried out through the oil circuit controlled by the manual regulating valve, avoiding excessive heat dissipation and energy waste. When the power of the vehicle's power system increases, the oil temperature gradually rises. When the oil temperature exceeds the set value, the bimetallic strip in the automatic temperature control valve bends due to sensing the change in oil temperature, pushing the valve stem to move, thereby opening the additional flow channel and allowing more oil to flow into the serpentine tube bundle. At this time, the manual regulating valve and the automatic temperature control valve work together. The manual regulating valve maintains the base oil flow, and the automatic temperature control valve adjusts the additional oil flow in real time according to the oil temperature, together ensuring that the oil flow entering the serpentine tube bundle can meet the heat dissipation needs and keep the oil temperature stable within a suitable range. Meanwhile, the upper and lower densely folded aluminum heat sinks, with their small spacing and specific folding angle, greatly increase the heat dissipation surface area. When the oil flows in the serpentine tube bundle, the upper and lower densely folded aluminum heat sinks dissipate heat through efficient convection with the surrounding air, quickly transferring the heat in the oil to the air. Moreover, the upper and lower densely folded aluminum heat sinks are mechanically riveted together, i.e., the support block is inserted into the inside of the support box, and then screws are screwed into the threaded holes, thus firmly fixing the upper and lower densely folded aluminum heat sinks to the outside of the serpentine tube bundle, forming an integrated heat dissipation unit. This ensures the stability and reliability of the heat dissipation structure, improves heat dissipation efficiency, and effectively solves the problems of insufficient heat dissipation capacity and limited heat dissipation efficiency of traditional oil coolers.

[0006] Preferably, the surface of the manual regulating valve is provided with anti-slip texture; By adopting the above technical solution and setting anti-slip texture, the friction of the surface of the manual regulating valve can be increased, allowing the operator to hold the valve more firmly when adjusting it, avoiding the inability to accurately adjust the oil flow due to hand slippage, thereby ensuring the accuracy and stability of the manual regulating valve in adjusting the base oil flow.

[0007] Preferably, the auxiliary heat dissipation mechanism includes a T-shaped block fixedly connected to the side of one of the support boxes. A wind box is fixedly connected to the top and bottom of the T-shaped block. A drive motor is fixedly mounted on the side of one of the wind boxes via a mounting plate. Bearings are fixedly connected to the sides of both wind boxes. A rotating shaft is rotatably connected inside both bearings. One end of one of the rotating shafts is fixedly connected to the output shaft of the drive motor. Pulleys are fixedly connected to the surfaces of both rotating shafts. A rubber belt is driven between the pulleys. Several fan blades are fixedly connected to the surfaces of both rotating shafts. By adopting the above technical solution and setting an auxiliary heat dissipation mechanism, the T-shaped block can be used as a fixed base point to firmly connect the air box to the side of the support box. In use, the drive motor runs, and then its output shaft drives the rotating shaft fixedly connected to it to rotate. Subsequently, the pulley on the rotating shaft drives the pulley on another rotating shaft to rotate synchronously through a rubber belt, thereby causing the fan blades on the two rotating shafts to rotate simultaneously. The strong airflow generated by the subsequent rotation of the fan blades can be blown towards the heat dissipation unit, accelerating the airflow around the heat dissipation unit and improving the convective heat dissipation efficiency between the heat dissipation unit and the surrounding air. In conjunction with the upper and lower densely folded aluminum heat dissipation fins, it can better transfer the heat in the oil to the air, thus more effectively solving the problems of insufficient heat dissipation capacity and limited heat dissipation efficiency of traditional oil coolers.

[0008] Preferably, a temperature sensor is provided on the side of the densely folded aluminum heat sink; By adopting the above technical solution and setting a temperature sensor, the temperature at the densely folded aluminum heat sink can be monitored in real time, and the temperature data can be fed back to the vehicle's control unit. When the detected temperature exceeds the preset safety threshold, the control unit will issue an instruction in time, that is, adjust the speed of the drive motor to make the fan blades generate a stronger airflow to enhance heat dissipation, or take other corresponding protective measures, thereby effectively avoiding damage to the vehicle's oil cooler and related components due to excessive oil temperature.

[0009] Preferably, a mesh cover is fixedly connected to the side of each of the two bellows; By adopting the above technical solution and setting up a mesh cover, it is possible to effectively prevent external debris or dust from entering the air box, avoid these foreign objects from interfering with the normal operation of the fan blades, and ensure the smooth rotation of the fan blades.

[0010] Preferably, the surface of the serpentine tube bundle is coated with an anti-corrosion coating; By adopting the above technical solution and setting an anti-corrosion coating, the serpentine tube bundle can be effectively prevented from being corroded by oil or other corrosive substances during long-term use.

[0011] Preferably, the interior of the serpentine tube bundle is coated with a hydrophobic coating; By adopting the above technical solution and setting a hydrophobic coating, the oil residue on the inner wall of the serpentine tube bundle can be reduced, allowing the oil to flow more smoothly and improving the heat dissipation efficiency of the oil cooler.

[0012] Preferably, one end of the serpentine tube bundle is provided with an oil inlet, and the other end of the serpentine tube bundle is provided with an oil outlet; By adopting the above technical solution and setting up an oil inlet and an oil outlet, the oil can smoothly enter and flow out of the serpentine tube bundle, ensuring the normal circulation of the oil in the oil cooler, thereby ensuring that the oil cooler effectively cools the oil.

[0013] In summary, this application includes at least one of the following beneficial technical effects: This type of densely folded dual-valve temperature-controlled tubular automotive oil cooler, by incorporating upper and lower densely folded aluminum heat sinks, a manual adjustment valve, and an automatic temperature control valve, allows for several cooling mechanisms. When the vehicle's power system is operating at low power, the manual adjustment valve allows the operator to rotate the valve core to adjust the initial oil flow to a smaller value according to actual cooling needs. At this time, the automatic temperature control valve is initially closed, and cooling is only achieved through the oil circuit controlled by the manual adjustment valve, avoiding excessive heat dissipation and energy waste. As the vehicle's power increases and the oil temperature gradually rises, when the oil temperature exceeds the set value, the bimetallic strip in the automatic temperature control valve bends upon sensing the change in oil temperature, pushing the valve stem to move and opening an additional flow channel, allowing more oil to flow into the serpentine tubing. At this time, the manual adjustment valve and the automatic temperature control valve work together. The manual adjustment valve maintains the base oil flow, while the automatic temperature control valve adjusts the additional oil flow in real time according to the oil temperature, jointly ensuring that the oil flow entering the serpentine tubing meets the cooling requirements and keeps the oil temperature stable within a suitable range. Meanwhile, the upper and lower densely folded aluminum heat sinks, with their small spacing and specific folding angle, greatly increase the heat dissipation surface area. When the oil flows in the serpentine tube bundle, the upper and lower densely folded aluminum heat sinks dissipate heat through efficient convection with the surrounding air, quickly transferring the heat in the oil to the air. Moreover, the upper and lower densely folded aluminum heat sinks are mechanically riveted together, i.e., the support block is inserted into the inside of the support box, and then screws are screwed into the threaded holes, thus firmly fixing the upper and lower densely folded aluminum heat sinks to the outside of the serpentine tube bundle, forming an integrated heat dissipation unit. This ensures the stability and reliability of the heat dissipation structure, improves heat dissipation efficiency, and effectively solves the problems of insufficient heat dissipation capacity and limited heat dissipation efficiency of traditional oil coolers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall front view structure of this application; Figure 2 This is a schematic diagram of the overall side view exploded structure of this application; Figure 3 This is a frontal cross-sectional view of the auxiliary heat dissipation mechanism in this application; Figure 4 for Figure 1 Schematic diagram of the top view of the serpentine tube bundle structure; Figure 5 for Figure 1 Schematic diagram of the top cross-sectional structure of the serpentine tube bundle; Figure 6 for Figure 1 Enlarged structural diagram at point A in the middle.

[0015] In the picture: 1. Serpentine tube bundle; 2. Upper densely folded aluminum heat sink; 3. Lower densely folded aluminum heat sink; 4. Manual regulating valve; 5. Automatic temperature control valve; 6. Auxiliary heat dissipation mechanism; 601. T-block; 602. Air box; 603. Drive motor; 604. Bearing; 605. Shaft; 606. Pulley; 607. Rubber belt; 608. Fan blade; 7. Temperature sensor; 8. Support block; 9. Support box; 10. Threaded hole; 11. Screw; 12. Mesh cover; 13. Anti-corrosion coating; 14. Hydrophobic coating; 15. Anti-slip texture; 16. Oil inlet; 17. Oil outlet. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail below.

[0017] Example 1: A densely folded dual-valve temperature-controlled tubular automotive oil cooler, referring to... Figure 1 and Figure 2 It includes a serpentine tube bundle 1 and an auxiliary heat dissipation mechanism 6. The top of the serpentine tube bundle 1 is connected to an upper densely folded aluminum heat sink 2, and the bottom of the serpentine tube bundle 1 is connected to a lower densely folded aluminum heat sink 3. The bottom of the upper densely folded aluminum heat sink 2 is fixedly connected to two support blocks 8, and the top of the lower densely folded aluminum heat sink 3 is fixedly connected to two support boxes 9. The support blocks 8 are inserted into the inside of the support boxes 9. The support boxes 9 and the support blocks 8 have two threaded holes 10 inside, and screws 11 are threaded into the inside of the threaded holes 10. A manual regulating valve 4 is installed on the top surface of the serpentine tube bundle 1, and an automatic temperature control valve 5 is fixedly installed on the side auxiliary pipe of the serpentine tube bundle 1. By configuring the upper densely folded aluminum heat sink 2, the lower densely folded aluminum heat sink 3, the manual regulating valve 4, and the automatic temperature control valve 5, when the vehicle's power system is in a low-power operating state, the manual regulating valve 4 can be rotated by the operator to adjust the initial oil flow to a smaller value according to the actual heat dissipation needs. At this time, the automatic temperature control valve 5 is initially closed, and heat dissipation is only achieved through the oil circuit controlled by the manual regulating valve 4, avoiding... Excessive heat dissipation leads to energy waste. When the power of the car's power system increases, the oil temperature gradually rises. When the oil temperature exceeds the set value, the bimetallic strip in the automatic temperature control valve 5 bends due to sensing the change in oil temperature, pushing the valve stem to move and thus opening the additional flow channel, allowing more oil to flow into the serpentine tube bundle 1. At this time, the manual regulating valve 4 and the automatic temperature control valve 5 work together. The manual regulating valve 4 maintains the base oil flow rate, and the automatic temperature control valve 5 adjusts the additional oil flow rate in real time according to the oil temperature, together ensuring that the oil flow rate entering the serpentine tube bundle 1 can meet the heat dissipation requirements and keep the oil temperature stable within a suitable range. Meanwhile, the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3, with their small spacing and specific folding angle, greatly increase the heat dissipation surface area. When the oil flows in the serpentine tube bundle 1, the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3 dissipate heat through efficient convection with the surrounding air, quickly transferring the heat in the oil to the air. Moreover, the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3 are mechanically riveted together, that is, the support block 8 is inserted into the inside of the support box 9, and the screw 11 is screwed into the threaded hole 10, thereby firmly fixing the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3 to the outside of the serpentine tube bundle 1, forming an integrated heat dissipation unit. This ensures the stability and reliability of the heat dissipation structure, improves the heat dissipation efficiency, and effectively solves the problems of insufficient heat dissipation capacity and limited heat dissipation efficiency of traditional oil coolers.

[0018] Please see Figure 3 and Figure 6The surface of the manual regulating valve 4 is provided with anti-slip texture 15. By providing anti-slip texture 15, the friction of the surface of the manual regulating valve 4 can be increased, allowing the operator to hold the valve more firmly when adjusting the manual regulating valve 4, avoiding the inability to accurately adjust the oil flow due to hand slippage, thereby ensuring the accuracy and stability of the manual regulating valve 4 in adjusting the base oil flow. The auxiliary heat dissipation mechanism 6 includes a T-shaped block 601 fixedly connected to the side of one of the support boxes 9. The top and bottom of the T-shaped block 601 are fixedly connected to the air box 602. The side of one of the air boxes 602 is fixedly mounted with a drive motor 603 through a mounting plate. The sides of both air boxes 602 are fixedly connected to the bearings 604. The inside of both bearings 604 is rotatably connected to the shaft 605. One end of one shaft 605 is fixedly connected to the output shaft of the drive motor 603. The surfaces of both shafts 605 are fixedly connected to the pulleys 606. A rubber belt 6 is connected between the pulleys 606. 07. Several fan blades 608 are fixedly connected to the surfaces of both rotating shafts 605. By setting an auxiliary heat dissipation mechanism 6, the T-shaped block 601 can be used as a fixed base point to firmly connect the air box 602 to the side of the support box 9. In use, the drive motor 603 runs, and then its output shaft drives the rotating shaft 605 fixedly connected to it to rotate. Subsequently, the pulley 606 on the rotating shaft 605 drives the pulley 606 on the other rotating shaft 605 to rotate synchronously through the rubber belt 607, thereby causing the fan blades 608 on the two rotating shafts 605 to rotate simultaneously. The strong airflow generated by the rotation of the fan blades 608 can blow towards the heat dissipation unit, accelerate the airflow around the heat dissipation unit, and improve the convective heat dissipation efficiency between the heat dissipation unit and the surrounding air. In conjunction with the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3, it can better transfer the heat in the oil to the air, thereby more effectively solving the problems of insufficient heat dissipation capacity and limited heat dissipation efficiency of traditional oil coolers.

[0019] Please see Figure 1 and Figure 3 A temperature sensor 7 is installed on the side of the densely folded aluminum heat sink 2. By installing the temperature sensor 7, the temperature at the densely folded aluminum heat sink 2 can be monitored in real time, and the temperature data can be fed back to the vehicle's control unit. When the detected temperature exceeds the preset safety threshold, the control unit will issue an instruction in time, that is, adjust the speed of the drive motor 603 so that the fan blade 608 generates a stronger airflow to enhance heat dissipation, or take other corresponding protective measures, thereby effectively avoiding damage to the vehicle's oil cooler and related components due to excessive oil temperature. Both air boxes 602 are fixedly connected to the sides with a mesh cover 12. By installing the mesh cover 12, it is possible to effectively prevent external debris or dust from entering the air box 602, avoid these foreign objects from interfering with the normal operation of the fan blade 608, and ensure the smooth rotation of the fan blade 608.

[0020] Please see Figure 2 , Figure 4 and Figure 5 The surface of the serpentine tube bundle 1 is coated with an anti-corrosion coating 13. By setting the anti-corrosion coating 13, the serpentine tube bundle 1 can be effectively prevented from being corroded by oil or other corrosive substances during long-term use. The inside of the serpentine tube bundle 1 is coated with a hydrophobic coating 14. By setting the hydrophobic coating 14, the oil residue on the inner wall of the serpentine tube bundle 1 can be reduced, allowing the oil to flow more smoothly and improving the heat dissipation efficiency of the oil cooler. One end of the serpentine tube bundle 1 is provided with an oil inlet 16, and the other end of the serpentine tube bundle 1 is provided with an oil outlet 17. By setting the oil inlet 16 and the oil outlet 17, the oil can smoothly enter and flow out of the serpentine tube bundle 1, ensuring the normal circulation of the oil in the oil cooler, thereby ensuring that the oil cooler effectively cools the oil.

[0021] The implementation principle of this application embodiment is as follows: First, after the vehicle power system is started, the oil to be cooled enters the oil cooler through the oil inlet 16 at one end of the serpentine tube bundle 1. At this time, the operator adjusts the initial flow rate of the oil to a smaller value suitable for low power conditions by rotating the valve core with the help of the anti-slip texture 15 on the surface of the manual adjustment valve 4 according to the initial operating power of the power system. At the same time, the automatic temperature control valve 5 is in the initial closed state, and the oil flows in the serpentine tube bundle 1 only through the basic oil circuit controlled by the manual adjustment valve 4. Then, as the oil flows within the serpentine tube bundle 1, the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3 on the outside of the serpentine tube bundle 1, with their small spacing between the fins and the large heat dissipation surface area formed by the specific folding angle, conduct preliminary convection heat dissipation with the surrounding air, transferring some of the heat in the oil to the air, thus completing the first round of heat dissipation. Subsequently, as the power of the vehicle's power system increases, the oil temperature gradually rises. The temperature sensor 7 on the side of the densely folded aluminum heat sink 2 monitors the temperature change in real time and feeds the data back to the vehicle control unit. When the oil temperature exceeds the set value, the bimetallic strip inside the automatic temperature control valve 5 bends due to sensing the change in oil temperature, pushing the valve stem to move and opening the additional flow channel. At this time, part of the oil continues to flow through the basic oil circuit controlled by the manual regulating valve 4, and the other part flows into the serpentine tube bundle 1 through the additional flow channel opened by the automatic temperature control valve 5, thereby realizing a dynamic increase in oil flow. Subsequently, based on the real-time temperature feedback from the temperature sensor 7, if the vehicle control unit determines that the current heat dissipation demand has further increased, it will instruct the auxiliary heat dissipation mechanism 6 to start. Then, the drive motor 603 is fixed to the side of the air box 602 by the mounting plate, and its output shaft drives the rotating shaft 605 connected to it to rotate. Then, the rotating shaft 605 rotates stably in the bearing 604 on the side of the air box 602. At the same time, the pulley 606 on the surface of the rotating shaft 605 drives the rotating shaft 605 and the pulley 606 in the other air box 602 to rotate synchronously through the rubber belt 607, so that several fan blades 608 on the rotating shaft 605 in the two air boxes 602 rotate simultaneously, generating a strong airflow. Afterwards, the airflow generated by the rotation of the fan blade 608 passes through the mesh cover 12 on the side of the air box 602 and blows into the heat dissipation unit composed of the upper densely folded aluminum heat sink 2 and the lower densely folded aluminum heat sink 3, accelerating the airflow around the heat dissipation unit and greatly improving the convective heat dissipation efficiency of the upper densely folded aluminum heat sink 2, the lower densely folded aluminum heat sink 3 and the air. Combined with the oil flow rate after the dual valve adjustment, it quickly removes more heat from the oil in the serpentine tube bundle 1. Finally, the low-temperature oil, after undergoing multiple rounds of efficient heat dissipation, circulates within the serpentine tube bundle 1 and flows out of the oil cooler through the oil outlet 17 at the other end of the serpentine tube bundle 1, returning to the vehicle's power system. At the same time, the anti-corrosion coating 13 on the surface of the serpentine tube bundle 1 prevents the tube bundle from being corroded by oil or corrosive substances, while the internal hydrophobic coating 14 reduces oil residue on the tube wall and ensures smooth oil flow. Together, these factors ensure the continuous and stable operation of the oil cooler, ultimately achieving a stable oil temperature within a suitable range to meet the cooling requirements of the vehicle's power system.

Claims

1. A densely folded dual-valve temperature-controlled tubular automotive oil cooler, comprising a serpentine tube bundle (1) and an auxiliary heat dissipation mechanism (6), characterized in that: The top of the serpentine tube bundle (1) is connected to an upper densely folded aluminum heat sink (2), and the bottom of the serpentine tube bundle (1) is connected to a lower densely folded aluminum heat sink (3). The bottom of the upper densely folded aluminum heat sink (2) is fixedly connected to two support blocks (8), and the top of the lower densely folded aluminum heat sink (3) is fixedly connected to two support boxes (9). The support blocks (8) are inserted into the inside of the support boxes (9), and the support boxes (9) and the support blocks (8) have two threaded holes (10) inside. The threaded holes (10) are threaded with screws (11). The top surface of the serpentine tube bundle (1) is provided with a manual regulating valve (4), and an automatic temperature control valve (5) is fixedly installed on the side additional pipe of the serpentine tube bundle (1).

2. The densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 1, characterized in that: The surface of the manual regulating valve (4) is provided with anti-slip texture (15).

3. The densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 1, characterized in that: The auxiliary heat dissipation mechanism (6) includes a T-shaped block (601) fixedly connected to the side of one of the support boxes (9). A wind box (602) is fixedly connected to the top and bottom of the T-shaped block (601). A drive motor (603) is fixedly installed on the side of one of the wind boxes (602) via a mounting plate. A bearing (604) is fixedly connected to the side of both wind boxes (602). A rotating shaft (605) is rotatably connected inside both bearings (604). One end of one of the rotating shafts (605) is fixedly connected to the output shaft of the drive motor (603). A pulley (606) is fixedly connected to the surface of both rotating shafts (605). A rubber belt (607) is connected between the pulleys (606). Several fan blades (608) are fixedly connected to the surface of both rotating shafts (605).

4. A densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 1, characterized in that: A temperature sensor (7) is provided on the side of the densely folded aluminum heat sink (2).

5. A densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 3, characterized in that: Both bellows (602) are fixedly connected to the sides with mesh covers (12).

6. A densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 1, characterized in that: The surface of the serpentine tube bundle (1) is coated with an anti-corrosion coating (13).

7. A densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 1, characterized in that: The interior of the serpentine tube bundle (1) is coated with a hydrophobic coating (14).

8. A densely folded dual-valve temperature-controlled tubular automotive oil cooler according to claim 1, characterized in that: One end of the serpentine tube bundle (1) is provided with an oil inlet (16), and the other end of the serpentine tube bundle (1) is provided with an oil outlet (17).

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