A suspended multi-fan diesel engine cooling device

Abstract

This invention relates to the field of cooling equipment technology and discloses a suspended multi-fan diesel engine cooling device, including a cooling mechanism for cooling and dissipating heat from the diesel engine. The cooling mechanism consists of four parts: a radiator, fans, an expansion tank, and a frame. The radiator is installed above the frame. There are two expansion tanks, which are respectively located at the left and right ends of the connection between the radiator and the frame. The frame has eight air ducts that are square and mutually separated. Each air duct is equipped with a fan, which realizes segmented control. The fans are set as eight axial flow fans and are installed in the eight air ducts of the frame to form eight independent air ducts. This avoids cross-flow of air when one fan fails and stops, which would affect the normal operation of other fans. It also makes the air supply flow field more uniform. The square and inclined air ducts can make the air blow into the radiator more concentrated, reduce the air duct resistance, and enhance the heat dissipation effect.

Description

Technical Field

[0001] This invention relates to the field of cooling equipment technology, specifically to a suspended multi-fan diesel engine cooling device. Background Technology

[0002] Diesel engine cooling equipment is an auxiliary device for locomotives that rely on diesel engines for power, and it is also one of the core components of locomotives. As the demand for locomotive traction power continues to increase, the heat generation power of traction transformers also continues to increase, resulting in the cooling equipment becoming larger and larger. Due to the limitations of the overall layout and body size of locomotives, conventional cooling equipment can no longer meet the limited installation space of the body. The cooling equipment must be structurally optimized to reduce the installation size.

[0003] The existing dual-source locomotive diesel engine cooling equipment on the market has the following drawbacks:

[0004] 1. The cooling equipment is installed in the vehicle's mechanical compartment, which requires a large amount of installation space inside the vehicle.

[0005] 2. The cooling fan uses a single fan for air supply, the impeller size is too large, the air supply flow field is very uneven, resulting in uneven wind resistance and a large power requirement for the fan.

[0006] 3. The airflow field of a single fan is very uneven, which also causes the radiator to not be able to fully exert its heat exchange capacity;

[0007] 4. The cooling fan is noisy, which greatly affects the people in the vehicle and the surrounding environment. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a suspended multi-fan diesel engine cooling device, which solves the problems of existing cooling equipment, such as large installation space occupation, high fan operating power, uneven air supply from a single fan affecting radiator function, and high noise from the cooling fan.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the present invention provides the following technical solution: a suspended multi-fan diesel engine cooling device, comprising a cooling mechanism for cooling and dissipating heat from the diesel engine, the cooling mechanism consisting of four parts: a radiator, a fan, an expansion tank, and a frame. The radiator is installed above the frame, and there are two expansion tanks respectively located at the left and right ends of the connection between the radiator and the frame. The frame is provided with eight air ducts that are round at the top and square at the bottom and separated from each other. Each air duct is equipped with a fan to achieve graded control.

[0012] The radiator includes a radiator mounting beam installed on the top of the frame, and a radiator core is welded to the top of the radiator mounting beam. An oil inlet and an oil outlet are respectively provided at the left and right ends of the radiator core.

[0013] The air duct of the radiator core is divided into eight sections, each section is connected to eight fans, so that each fan corresponds to a heat dissipation air duct and avoids cross-flow of air;

[0014] The expansion tank is divided into two chambers, one large and one small. Each chamber contains an inlet pipe and an outlet pipe. The large chamber is equipped with two longitudinal reinforcing ribs and one transverse reinforcing rib, while the small chamber is equipped with two longitudinal reinforcing ribs to improve the overall strength of the expansion tank.

[0015] Preferably, the frame is mounted on the roof of the locomotive, the radiator and expansion tank are located on the outside of the entire car body, and the air ducts and fans inside the frame are located inside the car body.

[0016] Preferably, the radiator has a bottom-in, top-out airflow direction, and the air duct inside the frame has an inclined structure. Each air duct consists of two guide plates, a side plate, and a side beam welded to the frame.

[0017] Mounting beam 1, mounting beam 2, mounting beam 3 and mounting beam 4 are welded to the side plate and side beam respectively for mounting the fan. Each mounting beam has two fan nut seats welded to it for fixing the fan with bolts.

[0018] Preferably, multiple U-shaped plates are welded to the outside of the air duct on the frame, and air-leakage-proof sealing block one and sealing block two are welded to the outer edge of the frame.

[0019] The outermost edge of the frame is welded with a nut seat for mounting the frame to the locomotive roof by bolts.

[0020] The top edge of the frame is welded with a radiator nut seat for mounting the radiator on its top with bolts.

[0021] Preferably, the radiator core is a staggered fin structure made by vacuum brazing, which has a high heat dissipation coefficient, and an oil inlet pipe and an oil outlet pipe are welded to the oil inlet and oil outlet respectively.

[0022] Preferably, the fan consists of a fan casing, an impeller, guide vanes, and a motor. The fan casing is fixed to the fan nut seat by bolts. A second nut seat is welded onto the fan casing for mounting the motor. Four reinforcing ribs and a reinforcing plate are also welded between the second nut seat and the motor to ensure stable operation of the motor.

[0023] Preferably, the fan is an axial flow fan, and a junction box is bolted to the side wall of the fan duct. The locomotive power line is connected to the junction box from above the radiator and electrically connected to the motor.

[0024] Preferably, each of the fans is powered by a separate frequency converter, and a pressure switch and a temperature sensor are installed on the fans to monitor their operation in real time.

[0025] Preferably, the expansion tank has a maximum volume of 90L for the large cavity and a maximum volume of 40L for the small cavity. Each cavity is equipped with a level sensor and a level switch to monitor the water level in the tank in real time.

[0026] (III) Beneficial Effects

[0027] Compared with the prior art, the present invention provides a suspended multi-fan diesel engine cooling device, which has the following beneficial effects:

[0028] The equipment's frame is mounted on the locomotive's roof, while the radiator and expansion tank are located on the outside of the entire car body. The air ducts and fans inside the frame are located inside the car body, further reducing the installation space required for the equipment on the locomotive.

[0029] The fan is configured as eight axial flow fans and installed in eight air ducts of the frame to form eight independent air ducts. This avoids cross-flow of air caused by a failure of one fan, which would affect the normal operation of other fans. It also makes the air supply flow field more uniform.

[0030] The round top and square bottom, along with the inclined air duct, allow the air to be blown into the radiator more concentratedly, reducing airflow resistance and enhancing the heat dissipation effect.

[0031] Each fan is powered by a separate frequency converter, which can be set with multiple speeds according to different locomotive operating conditions. The number of fans controlled and the frequency of each speed can be different, achieving a more energy-efficient effect.

[0032] The radiator core is a staggered fin structure made by vacuum brazing. The heat dissipation coefficient of staggered fins is higher than that of flat fins and corrugated fins. It can reduce the volume of the core and reduce the noise of the cooling equipment. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0034] Figure 1 This is a schematic diagram of the external structure of the cooling device of the present invention;

[0035] Figure 2 This is a schematic diagram of the external structure of the heat sink of the present invention;

[0036] Figure 3This is a schematic diagram of the frame structure of the present invention;

[0037] Figure 4 This is a cross-sectional view of the internal structure of the cooling fan of the present invention;

[0038] Figure 5 This is a top view of the frame of the present invention;

[0039] Figure 6 This is a schematic block diagram illustrating the working principle of the diesel engine cooling device of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Diesel engine; 2. Oil inlet pipe; 3. Oil outlet pipe; 4. Radiator; 5. Fan; 6. Expansion tank; 7. Frame; 8. Motor; 9. Reinforcing plate; 10. Mounting beam one; 11. Mounting beam two; 12. Mounting beam three; 13. Mounting beam four; 14. Fan nut seat; 15. U-shaped plate; 16. Sealing block one; 17. Sealing block two; 18. Air duct; 19. Radiator nut seat; 20. Nut seat; 21. Side plate; 22. Side beam; 23. Radiator core; 24. Oil inlet; 25. Oil outlet; 26. Radiator mounting beam; 27. Impeller; 28. Air duct; 29. ​​Guide vane; 30. Reinforcing rib. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Figure 1-6As an embodiment of the present invention, a suspended multi-fan diesel engine cooling device includes a cooling mechanism for cooling and dissipating heat from a diesel engine 1. The cooling mechanism consists of four parts: a radiator 4, a fan 5, an expansion tank 6, and a frame 7. The radiator 4 is installed above the frame 7. There are two expansion tanks 6, which are respectively located at the left and right ends of the connection between the radiator 4 and the frame 7. The frame 7 has eight air ducts 18 arranged in a circular and square pattern, which can concentrate the airflow into the radiator, reduce airflow resistance, and enhance the heat dissipation effect. Each air duct 18 is equipped with a fan 5. The radiator 4 can be divided into a high-temperature radiator and a low-temperature radiator. During the operation of the locomotive, the power of the diesel engine is different under different working conditions. Therefore, by installing the eight fans 5 in eight different air ducts 18, the power can be controlled in different stages, avoiding the waste of heat dissipation power and saving energy. The frame 7 is installed on the top cover of the locomotive. The radiator 4 and the expansion tank 6 are placed on the outside of the entire car body. The air ducts 18 and fans 5 inside the frame 7 are placed inside the car body, which further reduces the installation space of the equipment on the locomotive.

[0044] Furthermore, the fan 5 consists of a fan casing 28, an impeller 27, guide vanes 29, and a motor 8. The fan casing 28 is fixed to the fan nut seat 14 by bolts. A second nut seat is welded to the fan casing 28 for mounting the motor 8. Four reinforcing ribs 30 and a reinforcing plate 9 are also welded between the second nut seat and the motor 8 to prevent the motor 8 from vibrating and shifting its position during operation, thus ensuring the smooth operation of the motor 8. The fan 5 is an axial flow fan. A junction box is bolted to the side wall of the fan casing 28. The locomotive power cable is connected to the junction box from above the radiator 4 and electrically connected to the motor 8 to ensure the power supply to the fan 5.

[0045] Furthermore, each fan 5 is powered by a separate frequency converter. A pressure switch and a temperature sensor are installed on the fan 5 to monitor its operation in real time. Multiple speed settings can be set according to different operating conditions of the locomotive, and the number and frequency of fans controlled by different speed settings can be different.

[0046] Example 2, as Figure 3 and Figure 5As shown, the radiator 4 has a bottom-in, top-out airflow direction. The air duct 18 inside the frame 7 has an inclined structure. Each air duct 18 consists of two guide plates, a side plate 21, and a side beam 22 welded to the frame 7. Mounting beams 10, 11, 12, and 13 for mounting the fan 5 are welded onto the side plate 21 and side beam 22, respectively. Each mounting beam has two fan nut seats 14 welded on it for fixing the fan 5 with bolts. Multiple U-shaped brackets are welded on the outside of the air duct 18 on the frame 7. The frame 7 has two sealing blocks, 16 and 17, welded to its outer edges to prevent air leakage. The outermost edge of the frame 7 has a nut seat 20 for mounting the frame 7 to the locomotive roof with bolts. The top edge of the frame 7 has a radiator nut seat 19 for mounting the radiator 4 to its top with bolts. The entire frame 7 is a welded structure, composed of profiles, plates and bent plates, which has high connection strength and stability, providing a strong guarantee for the normal operation of the cooling equipment.

[0047] Example 3, as Figure 1 and Figure 2 As shown, the radiator 4 includes a radiator mounting beam 26 mounted on the top of the frame 7. A radiator core 23 is welded to the top of the radiator mounting beam 26. An oil inlet 24 and an oil outlet 25 are respectively provided at the left and right ends of the radiator core 23. Switch control butterfly valves can be added to the oil inlet 24 and the oil outlet 25 to facilitate the control of oil flow. The radiator core 23 is a staggered fin structure made by vacuum brazing. The heat dissipation coefficient of the staggered fin is higher than that of the flat fin and the corrugated fin. It can reduce the volume of the core and reduce the noise of the cooling equipment. An oil inlet pipe 2 and an oil outlet pipe 3 are welded to the oil inlet 24 and the oil outlet 25 respectively. The air duct of the radiator core 23 is divided into eight sections. Each section is connected to eight fans 5, so that each fan 5 corresponds to a heat dissipation air duct. This avoids cross-flow or air leakage when a fan stops due to failure, thus avoiding affecting the normal operation of other fans.

[0048] In Example 4, the expansion tank 6 is divided into two chambers, one large and one small. Each chamber contains an inlet pipe and an outlet pipe. The large chamber has two longitudinal reinforcing ribs and one transverse reinforcing rib, while the small chamber has two longitudinal reinforcing ribs. These features are used to improve the overall strength of the expansion tank 6. The large chamber of the expansion tank 6 has a maximum volume of 90L, and the small chamber has a maximum volume of 40L. Each chamber is equipped with a level sensor and a level switch. The sensor transmits the level data in the tank to the driver's cab, allowing the driver to monitor the water level in the tank in real time.

[0049] Working principle: High-temperature water is pumped into the cooler by a high-temperature water pump. After cooling the engine oil, one path enters the engine block water chamber and cylinder head water chamber to absorb engine heat, while the other path enters the first-stage air cooler to cool the pressurized air. The two paths merge and flow to the high-temperature thermostat. If the water temperature is lower than the high-temperature thermostat's set value, it flows directly back to the high-temperature water pump through a bypass pipe. If the temperature is higher than the set value, it flows to radiator 4. After being cooled by radiator 4, it flows back to the high-temperature water pump. Low-temperature water is pressurized by the low-temperature water pump and enters the second-stage air cooler to cool the pressurized air. Then it flows to the low-temperature thermostat. If the water temperature is lower than the low-temperature thermostat's set value, it flows directly back to the low-temperature water pump through a bypass pipe. If the temperature is higher than the set value, it flows to the radiator. After being cooled by the radiator, it flows back to the low-temperature water pump.

[0050] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A suspended multi-fan diesel engine cooling device, comprising a cooling mechanism for cooling and dissipating heat from a diesel engine (1), the cooling mechanism consisting of a radiator (4), a fan (5), an expansion tank (6), and a frame (7), characterized in that: The radiator (4) is installed above the frame (7). There are two expansion tanks (6) respectively located at the left and right ends of the connection between the radiator (4) and the frame (7). The frame (7) is equipped with eight air ducts (18) that are round in the sky and square in the earth and separated from each other. Each air duct (18) is equipped with a fan (5) to realize graded control. The radiator (4) includes a radiator mounting beam (26) installed on the top of the frame (7). A radiator core (23) is welded to the top of the radiator mounting beam (26). An oil inlet (24) and an oil outlet (25) are respectively provided at the left and right ends of the radiator core (23). The air duct of the radiator core (23) is divided into eight sections, each section is connected to eight fans (5), so that each fan (5) corresponds to a heat dissipation air duct to avoid cross-flow; The expansion tank (6) is divided into two chambers, one large and one small. Each chamber contains an inlet pipe and an outlet pipe. The large chamber is equipped with two longitudinal reinforcing ribs and one transverse reinforcing rib, and the small chamber is equipped with two longitudinal reinforcing ribs to improve the overall strength of the expansion tank (6). The frame (7) is installed on the roof of the locomotive, the radiator (4) and the expansion tank (6) are located outside the entire car body, and the air duct (18) and the fan (5) inside the frame (7) are located inside the car body. The radiator (4) has a bottom-in, top-out airflow direction. The air duct (18) inside the frame (7) is an inclined structure. Each air duct (18) consists of two guide plates, a side plate (21) and a side beam (22) welded to the frame (7). The side plate (21) and side beam (22) are respectively welded with mounting beam one (10), mounting beam two (11), mounting beam three (12) and mounting beam four (13) for mounting the fan (5). Each mounting beam is welded with two fan nut seats (14) for fixing the fan (5) with bolts. Multiple U-shaped plates (15) are welded on the frame (7) outside the air duct (18), and air-leakage sealing block one (16) and sealing block two (17) are welded on the outer edge of the frame (7). The outermost edge of the frame (7) is welded with a nut seat (20) for mounting the frame (7) on the locomotive roof by bolts; The top edge of the frame (7) is welded with a radiator nut seat (19) for mounting the radiator (4) on its top with bolts.

2. The diesel engine cooling device with a suspended multi-fan configuration according to claim 1, characterized in that: The radiator core (23) is a staggered fin structure made by vacuum brazing, which has a high heat dissipation coefficient. The oil inlet (24) and oil outlet (25) are respectively welded with an oil inlet pipe (2) and an oil outlet pipe (3).

3. A suspended multi-fan diesel engine cooling device according to claim 1, characterized in that: The fan (5) consists of a fan casing (28), an impeller (27), guide vanes (29) and a motor (8). The fan casing (28) is fixed to the fan nut seat (14) by bolts. A nut seat II is welded on the fan casing (28) for installing the motor (8). Four reinforcing ribs (30) and a reinforcing plate (9) are also welded between the nut seat II and the motor (8) to ensure that the motor (8) runs smoothly.

4. A suspended multi-fan diesel engine cooling device according to claim 3, characterized in that: The fan (5) is an axial flow fan. A junction box is installed on the side wall of the fan duct (28) by bolts. The locomotive power line is connected to the junction box from above the radiator (4) and electrically connected to the motor (8).

5. A diesel engine cooling device with a suspended multi-fan configuration according to claim 1, characterized in that: Each of the aforementioned fans (5) is powered by a separate frequency converter, and a pressure switch and a temperature sensor are installed on the fans (5) to monitor their operation in real time.

6. A diesel engine cooling device with a suspended multi-fan configuration according to claim 1, characterized in that: The expansion tank (6) has a maximum volume of 90L for the large cavity and 40L for the small cavity. Each cavity is equipped with a level sensor and a level switch to monitor the water level in the tank in real time.

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