Air-cooled oil cooler

Abstract

The utility model relates to a heat exchange equipment technical field of hydraulic system especially air -cooled oil cooler, including first change through subassembly, and the second change through subassembly is installed to the drainage end, install straight -through pipe between first change through subassembly and second change through subassembly, when oil cooler is in first state, first change through subassembly, heat exchange pipe, second change through subassembly are intercommunication state, when oil cooler is in second state, first change through subassembly, straight -through pipe, second change through subassembly are intercommunication state. The structure makes oil liquid in cold start stage can flow directly through straight -through pipe, avoids low temperature high viscosity oil liquid to produce excessive pressure drop through heat exchange pipe, lightens the system burden, in normal working stage, oil liquid flows through heat exchange pipe and realizes efficient heat dissipation with fin and fan cooperation. Thus both ensure low pressure drop of cold start stage, and ensure good heat exchange effect of normal working stage.

Description

Technical Field

[0001] This utility model relates to the technical field of heat exchange equipment for hydraulic systems, and in particular to an air-cooled oil cooler. Background Technology

[0002] Hydraulic systems are widely used in engineering machinery, metallurgical equipment, and wind power installations. During system operation, hydraulic oil continuously heats up due to throttling and friction. To maintain stable oil performance, an oil cooler is typically required for heat dissipation. Existing air-cooled oil coolers generally consist of a heat exchange core, oil piping, a fan, and an air guide shroud. Driven by an oil pump, the hydraulic oil flows through the piping structure of the heat exchange core and exchanges heat with the air under the action of the fan, thereby reducing the oil temperature.

[0003] However, during cold starts of hydraulic equipment, the hydraulic oil temperature is generally low, especially in low-temperature environments where the viscosity of the hydraulic oil increases significantly. At this time, the hydraulic oil experiences considerable flow resistance as it flows through the heat exchanger pipes of the cooler, leading to a significant increase in system pressure drop. Excessive pressure drop not only reduces the efficiency of the hydraulic system but may also cause the following problems: firstly, the oil pump needs to withstand a greater load, making it prone to cavitation or damage; secondly, the heat exchanger core tube walls are susceptible to deformation, leakage, or even rupture due to the high pressure differential. Utility Model Content

[0004] The purpose of this utility model is to solve the problems pointed out in the background art of the prior art, and to propose an air-cooled oil cooler.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An air-cooled oil cooler includes a support frame, a heat exchange tube fixed to the support frame, fins for heat exchange with the heat exchange tube, and a fan. A first switching component is installed at the liquid inlet end of the heat exchange tube, and a second switching component is installed at the liquid outlet end. A straight pipe is installed between the first switching component and the second switching component. When the oil cooler is in a first state, the first switching component, the heat exchange tube, and the second switching component are in a connected state. When the oil cooler is in a second state, the first switching component, the straight pipe, and the second switching component are in a connected state.

[0007] The first switching component has a first inlet, a second inlet, a first outlet, and a first core. The first outlet is connected to the liquid inlet end of the heat exchange tube. The second switching component has a third inlet, a second outlet, a third outlet, and a second core. The third inlet is connected to the liquid outlet end of the heat exchange tube. When the oil cooler is in the first state, the first core enables the second inlet and the first outlet to be connected, and the second core enables the third inlet and the second outlet to be connected. When the oil cooler is in the second state, the first core enables the first inlet and the straight pipe to be connected, and the second core enables the third outlet and the straight pipe to be connected.

[0008] The first core has a first channel and a second channel, and the second core has a third channel and a fourth channel. The first core and the second core are respectively fixed to both ends of a straight pipe, and the second channel and the third channel are at least partially connected to the straight pipe. The first switching assembly includes a first outer shell fixed to a support frame, and the first core is rotatably connected to the first outer shell. The first outer shell has a first inlet, a second inlet, and a first outlet. The second switching assembly includes a second outer shell fixed to a support frame, and the second core is rotatably connected to the second outer shell. The second outer shell has the third inlet, a second outlet, and a third outlet.

[0009] The first outer shell has a first cavity with one end open, the first core is rotatably connected in the first cavity, and the first channel is located above the second channel and the two are arranged perpendicularly; the second outer shell has a second cavity with one end open, the second core is rotatably connected in the second cavity, and the fourth channel is located below the third channel and the two are arranged perpendicularly.

[0010] Both the first core and the second core are fixed to the straight pipe thread.

[0011] The oil cooler includes a rotary actuator fixed to a support frame, and the power output shaft of the rotary actuator is coaxially fixed to one of the first core and the second core.

[0012] The oil cooler includes a first tee and a second tee, wherein the first end and the second end of the first tee are respectively connected to the first inlet and the second inlet, and the first end and the second end of the second tee are respectively connected to the second outlet and the third outlet.

[0013] The air-cooled oil cooler proposed in this utility model has the following advantages: This structure utilizes the switching action of a first switching component and a second switching component, allowing the oil to flow directly through the straight-through pipe during the cold start phase. This avoids excessive pressure drop caused by the low-temperature, high-viscosity oil passing through the heat exchange pipe, reducing the system load. During normal operation, the oil flows through the heat exchange pipe and works in conjunction with the fins and fan to achieve efficient heat dissipation. This ensures both a low pressure drop during the cold start phase and good heat exchange performance during normal operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the flow path connection structure of the oil cooler of this utility model in its first state.

[0015] Figure 2 This is a schematic diagram of the flow path connection structure of the oil cooler of this utility model in the second state;

[0016] Figure 3 This is a partial structural diagram of the first switching component and the second switching component of this utility model.

[0017] In the diagram: 1. First tee 2. Second tee 3. First switching assembly 4. Second switching assembly 5. Straight pipe 6. Rotary actuator 7. Support frame 8. Fin 9. Heat exchange tube 10. First inlet 11. Second inlet 12. First channel 13. First outer shell 14. First outlet 15. First core 16. Second channel 17. Second core 18. Second outer shell 19. Third inlet 20. Fourth channel 21. Second outlet 22. Third outlet 23. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-3 A wind-cooled oil cooler includes a support frame 7, a heat exchange tube 9 fixed to the support frame 7, fins 8 that exchange heat with the heat exchange tube 9, and a fan. A first switching component 3 is installed at the liquid inlet end of the heat exchange tube 9, and a second switching component 4 is installed at the liquid outlet end. A straight pipe 5 is installed between the first switching component 3 and the second switching component 4. When the oil cooler is in a first state, the first switching component 3, the heat exchange tube 9, and the second switching component 4 are in a connected state. When the oil cooler is in a second state, the first switching component 3, the straight pipe 5, and the second switching component 4 are in a connected state.

[0020] The air-cooled oil cooler includes a support frame 7, on which a heat exchange tube 9 is fixed. Fins 8 are provided on the outer surface of the heat exchange tube 9, and the fins 8 cooperate with a fan to form an air-side heat exchange channel. A first switching component 3 is installed at the liquid inlet end of the heat exchange tube 9, and a second switching component 4 is installed at the liquid outlet end. A straight pipe 5 is installed between the first switching component 3 and the second switching component 4. When the oil cooler is in its first state, the oil sequentially enters the heat exchange tube 9 through the first switching component 3 and then exits through the second switching component 4. During this process, the fan drives airflow through the fins 8, and the oil exchanges heat with the air within the heat exchange tube 9, thereby achieving cooling.

[0021] When the oil cooler is in the second state, the oil flows directly into the straight pipe 5 through the first switching component 3, and then flows into the second switching component 4 to be discharged. At this time, the oil does not pass through the heat exchange pipe 9, thus forming a low-resistance flow path.

[0022] This structure utilizes the switching action between the first and second switching components to allow the oil to flow directly through the straight pipe during the cold start phase, avoiding excessive pressure drop caused by the low-temperature, high-viscosity oil passing through the heat exchange pipe and reducing the system load. During normal operation, the oil flows through the heat exchange pipe and works with the fins and fan to achieve efficient heat dissipation. This ensures both low pressure drop during the cold start phase and good heat exchange performance during normal operation.

[0023] In one implementation, the first switching component 3 has a first inlet 10, a second inlet 11, a first outlet 14, and a first core 15, with the first outlet 14 connected to the liquid inlet end of the heat exchange tube 9. The second switching component 4 has a third inlet 20, a second outlet 22, a third outlet 23, and a second core 18, with the third inlet 20 connected to the liquid outlet end of the heat exchange tube 9. When the oil cooler is in the first state, the first core 15 enables the second inlet 11 and the first outlet 14 to connect, and the second core 18 enables the third inlet 20 and the second outlet 22 to connect. When the oil cooler is in the second state, the first core 15 enables the first inlet 10 and the straight pipe 5 to connect, and the second core 18 enables the third outlet 23 and the straight pipe 5 to connect. The first core 15 has... The first channel 12 and the second channel 16, the second core 18 having a third channel 17 and a fourth channel 21, the first core 15 and the second core 18 being fixedly connected to both ends of the straight pipe 5, and the second channel 16 being at least partially connected to the straight pipe 5, and the third channel 17 being at least partially connected to the straight pipe 5; the first switching assembly 3 includes a first outer shell 13 fixed to the support frame 7, the first core 15 being rotatably connected to the first outer shell 13, the first outer shell 13 having a first inlet 10, a second inlet 11, and a first outlet 14; the second switching assembly 4 includes a second outer shell 19 fixed to the support frame 7, the second core 18 being rotatably connected to the second outer shell 19, the second outer shell 19 having a third inlet 20, a second outlet 22, and a third outlet 23.

[0024] The first core 15 and the second core 18 are respectively fixed to both ends of the straight pipe 5, thereby realizing synchronous rotation of both ends. The second channel 16 is at least partially connected to the straight pipe 5, and the third channel 17 is at least partially connected to the straight pipe 5.

[0025] When the oil cooler is in the first state, the first core 15 rotates, causing the second inlet 11 and the first outlet 14 to connect through the first channel 12, allowing the oil to enter the heat exchange tube 9; the second core 18 rotates, causing the third inlet 20 and the second outlet 22 to connect through the fourth channel 21, allowing the oil to be discharged. At this time, the oil completes heat exchange through the heat exchange tube 9, the fins 8, and the fan.

[0026] When the oil cooler is in the second state, the first core 15 rotates to make the first inlet 10 and the straight pipe 5 connected through the second channel 16. The second core 18 rotates to make the third outlet 23 and the straight pipe 5 connected through the third channel 17. The oil is discharged directly through the straight pipe 5 with low resistance, without passing through the heat exchange tube 9.

[0027] Through the coordinated switching of the first switching component 3 and the second switching component 4, the oil can form a low-resistance path through the first inlet 10, the straight pipe 5, and the third outlet 23 at low temperatures, avoiding a large pressure drop through the heat exchange pipe 9 when the oil viscosity is high, thus reducing the load on the oil pump. After the oil temperature rises, the second inlet 11, the first outlet 14, the heat exchange pipe 9, the third inlet 20, and the second outlet 22 form a complete heat exchange path, which, together with the fins 8 and the fan, achieves efficient cooling. The straight pipe 5 connects the first core 15 and the second core 18, enabling synchronous operation at both ends and ensuring the reliability of the switching action.

[0028] As a rotating connection scheme, the first outer shell 13 has a first cavity with one open end, and the first core 15 is rotatably connected in the first cavity. The first channel 12 is located above the second channel 16 and the two are arranged perpendicularly. The second outer shell 19 has a second cavity with one open end, and the second core 18 is rotatably connected in the second cavity. The fourth channel 21 is located below the third channel 17 and the two are arranged perpendicularly. The first core 15 and the second core 18 are both threadedly fixed to the straight pipe 5. The oil cooler includes a rotating actuator 6 fixed to the support frame 7. The power output shaft of the rotating actuator 6 is coaxially fixed to one of the first core 15 and the second core 18. The oil cooler includes a first tee 1 and a second tee 2. The first end and the second end of the first tee 1 are respectively connected to the first inlet 10 and the second inlet 11. The first end and the second end of the second tee 2 are respectively connected to the second outlet 22 and the third outlet 23.

[0029] When the device is working, the first core 15 and the second core 18 are controlled to rotate simultaneously by the rotary actuator 6, thereby realizing the transition between the first state and the second state of the device. The overall device has better integrity and can realize the synchronous conversion of the flow path. The rotary actuator 6 can be a stepper motor, servo motor or rotary cylinder and other power components.

[0030] As an extension of this device, whether it is adding a temperature sensor to detect temperature signals or adding a controller to achieve automated control, it is all within the protection scope of this technical solution.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technical solution, concept, or design obtained by those skilled in the art by making equivalent substitutions or changes based on the technical solution and utility model concept disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air-cooled oil cooler comprising a support frame (7), heat exchange pipes (9) fixed to the support frame (7), fins (8) for heat exchange with the heat exchange pipes (9), and a fan, characterized in that, The heat exchange tube (9) is equipped with a first switching component (3) at the liquid inlet end and a second switching component (4) at the liquid outlet end. A straight pipe (5) is installed between the first switching component (3) and the second switching component (4). When the oil cooler is in the first state, the first switching component (3), the heat exchange tube (9), and the second switching component (4) are in a connected state. When the oil cooler is in the second state, the first switching component (3), the straight pipe (5), and the second switching component (4) are in a connected state.

2. The air-cooled oil cooler according to claim 1, characterized in that, The first switching component (3) has a first inlet (10), a second inlet (11), a first outlet (14), and a first core (15). The first outlet (14) is connected to the liquid inlet end of the heat exchange tube (9). The second switching component (4) has a third inlet (20), a second outlet (22), a third outlet (23), and a second core (18). The third inlet (20) is connected to the liquid outlet end of the heat exchange tube (9). When the oil cooler is in the first state, the first core (15) can connect the second inlet (11) and the first outlet (14), and the second core (18) can connect the third inlet (20) and the second outlet (22). When the oil cooler is in the second state, the first core (15) can connect the first inlet (10) and the straight pipe (5), and the second core (18) can connect the third outlet (23) and the straight pipe (5).

3. The air-cooled oil cooler according to claim 2, characterized in that, The first core (15) has a first channel (12) and a second channel (16), and the second core (18) has a third channel (17) and a fourth channel (21). The first core (15) and the second core (18) are respectively fixed to both ends of the straight pipe (5), and the second channel (16) is at least partially connected to the straight pipe (5), and the third channel (17) is at least partially connected to the straight pipe (5). The first switching assembly (3) includes a first outer shell (13) fixed to the support frame (7). The first core (15) is rotatably connected to the first outer shell (13). The first outer shell (13) has a first inlet (10), a second inlet (11), and a first outlet (14). The second switching assembly (4) includes a second outer shell (19) fixed to the support frame (7). The second core (18) is rotatably connected to the second outer shell (19). The second outer shell (19) has the third inlet (20), a second outlet (22), and a third outlet (23).

4. The air-cooled oil cooler according to claim 3, characterized in that, The first outer shell (13) has a first cavity with one end open, the first core (15) is rotatably connected in the first cavity, the first channel (12) is located above the second channel (16) and the two are arranged perpendicularly; the second outer shell (19) has a second cavity with one end open, the second core (18) is rotatably connected in the second cavity, the fourth channel (21) is located below the third channel (17) and the two are arranged perpendicularly.

5. The air-cooled oil cooler according to claim 3, characterized in that, The first core (15) and the second core (18) are both threadedly fixed to the straight pipe (5).

6. A wind-cooled oil cooler according to any one of claims 3, 4, and 5, characterized in that, The oil cooler includes a rotary actuator (6) fixed to the support frame (7), and the power output shaft of the rotary actuator (6) is coaxially fixed to one of the first core (15) and the second core (18).

7. A wind-cooled oil cooler according to claim 6, characterized in that, The oil cooler includes a first tee (1) and a second tee (2). The first end and the second end of the first tee (1) are connected to the first inlet (10) and the second inlet (11) respectively. The first end and the second end of the second tee (2) are connected to the second outlet (22) and the third outlet (23) respectively.

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