Agricultural machinery precision control multifunctional thermal management system

Abstract

The present application relates to the technical field of agricultural machinery, in particular to a kind of agricultural machinery precision control multifunctional thermal management system, including main heat dissipation fan and rack, the rack includes top plate, bottom plate and rear frame, main heat dissipation fan is installed in rear frame middle part;Top plate left side is connected bottom plate left side by intercooler joint, and top plate right side is connected bottom plate right side by diesel engine radiator joint;Between the front end of diesel engine radiator joint and the front end of intercooler joint is connected by hydraulic system radiator joint.The structure layout of design in the present application, it is difficult to solve the problem of routine thermal management system cleaning maintenance, while the precision control of thermal management system can be realized.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and more particularly to new energy agricultural machinery technology, specifically a multi-functional thermal management system for precise control of agricultural machinery. Background Technology

[0002] Most agricultural machinery currently on the market uses a combination of engine-driven direct-drive fan and thermostat for cooling system management. Because the fan is directly driven by the engine, the fan speed changes when the engine speed changes. In this case, thermal management is not in an independent and controllable state, and the accuracy of thermal management control will be greatly reduced, resulting in a waste of economic benefits.

[0003] Thanks to the rapid development of new energy technologies, electric drive fans have become a reality. Because electric drive fans are not affected by engine speed, the vehicle control unit (VCU) can independently control the speed of each electric drive fan based on the temperature parameters of each cooling subsystem, thereby achieving precise management of each cooling subsystem and ultimately achieving energy conservation and environmental protection.

[0004] The cooling systems of an agricultural machine are typically distributed in a dispersed manner. While some integrated thermal management systems are publicly available, their integration methods generally still rely on the principle of direct engine-driven fans, making it difficult to achieve precise management of each dispersed thermal system. Furthermore, relative to the operating conditions of agricultural machinery, the existing integrated methods mean that dust removal and cleaning of the entire cooling system depends solely on wind power, resulting in poor dust removal and cleaning effectiveness and difficulties in maintenance. Summary of the Invention

[0005] In response to the problems pointed out in the background art, the purpose of this invention is to propose a multi-functional thermal management system for precise control of agricultural machinery. The system structure is designed with a corresponding fan configured for each heat dissipation subsystem, realizing integrated and precise thermal management. At the same time, it solves the problems of low independence of each heat dissipation subsystem, difficult cleaning and maintenance, low control accuracy, and low economic efficiency of conventional thermal management systems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-functional thermal management system for precision control of agricultural machinery includes a main cooling fan and a frame. The frame includes a top plate, a bottom plate and a rear frame. The upper end of the rear frame is connected to the rear end of the top plate and the lower end is connected to the rear end of the bottom plate. The main cooling fan is installed in the middle of the rear frame.

[0008] The left side of the top plate is connected to the left side of the bottom plate via the intercooler assembly, and the right side of the top plate is connected to the right side of the bottom plate via the diesel engine radiator assembly; the front end of the intercooler assembly is tilted to the right, and the front end of the diesel engine radiator assembly is tilted to the left; the front end of the diesel engine radiator assembly and the front end of the intercooler assembly are connected via a hydraulic system radiator assembly.

[0009] The intercooler assembly includes a new energy cooling water tank, a new energy radiator fan, a diesel engine intercooler, and an intercooler radiator fan.

[0010] The hydraulic system radiator assembly includes a hydraulic radiator and a hydraulic cooling fan;

[0011] The diesel engine radiator assembly includes the diesel engine coolant tank and the diesel engine cooling fan;

[0012] The new energy cooling water tank, diesel engine intercooler, hydraulic radiator, and diesel engine cooling water tank are all grid-type components with frames.

[0013] The axes of the new energy cooling fan, intercooler cooling fan, hydraulic cooling fan, and diesel engine cooling fan are all oriented towards the main cooling fan.

[0014] The upper end of the diesel engine intercooler is connected to the front left side of the top plate, and the lower end is connected to the front left side of the bottom plate. The new energy cooling water tank is located between the diesel engine intercooler and the rear frame. The front ends of both the new energy cooling water tank and the diesel engine intercooler are tilted to the right. The new energy cooling fans are distributed on the left side wall of the new energy cooling water tank, and the intercooler cooling fans are distributed on the left side wall of the diesel engine intercooler.

[0015] The diesel engine cooling water tank is connected to the top plate, bottom plate and rear frame respectively. The front end of the diesel engine cooling water tank is tilted to the left, and the diesel engine cooling fans are distributed on the right side wall of the diesel engine cooling water tank.

[0016] The right end of the hydraulic radiator is rotatably hinged to the diesel engine coolant tank via a hinge shaft, and the left end of the hydraulic radiator is connected to the diesel engine intercooler via an elastic locking mechanism; the hydraulic cooling fans are distributed on the front wall of the hydraulic radiator.

[0017] The rear frame is connected to a fan shroud, and the main cooling fan is mounted in the middle of the rear frame through the fan shroud.

[0018] The rear frame is equipped with an overflow tank, which is located to the right of the main cooling fan. The overflow tank is connected to the diesel engine coolant tank through an overflow pipe.

[0019] Both the top plate and the bottom plate are equipped with sealing strips at their front ends.

[0020] The main cooling fan, the new energy cooling fan, the intercooler cooling fan, the hydraulic cooling fan, and the diesel engine cooling fan are all electric-driven fans that can rotate in both directions, and there are multiple new energy cooling fans, intercooler cooling fans, hydraulic cooling fans, and diesel engine cooling fans.

[0021] The beneficial effects of this invention are as follows: This invention achieves the rotational unfolding of the hydraulic system radiator assembly through a combination of an elastic locking mechanism and a rotating shaft mechanism within the system, solving the problem of difficult cleaning and maintenance of conventional thermal management systems; the switching between forward and reverse rotation of two independent electric drive fans within the system realizes the switching between working and cleaning states, further solving the problem of difficult cleaning and maintenance of conventional thermal management systems; the use of independent electric drive fans eliminates the influence of engine speed, solving the problem of low independence in conventional thermal management systems; by developing a control strategy for the relationship between the temperature parameters of each thermal system and the fan speed, and using CAN bus communication, precise control of the thermal management system can be achieved through the vehicle controller (VCU), solving the problems of low control accuracy and low economic efficiency in conventional thermal management systems. This invention is applicable to new energy agricultural power machinery and can also be applied to traditional agricultural power machinery, promoting the development of smart agriculture and having broad future application prospects. Attached Figure Description

[0022] Figure 1 This is a top view of the overall structure of the present invention.

[0023] Figure 2 A top view of the overall structure of the hydraulic system radiator assembly after it has been opened.

[0024] Figure 3 This is a front view of the overall structure of the present invention.

[0025] Figure 4 This is a left view of the overall structure of the present invention.

[0026] Figure 5 This is a rear view of the overall structure of the present invention.

[0027] Figure 6 This is a right view of the overall structure of the present invention.

[0028] Figure 7 This is a schematic diagram showing the overall structure of the present invention.

[0029] Figure 8 This is a flowchart of the process of the present invention.

[0030] Figure 9 This is a flowchart of the cleaning process of the present invention.

[0031] In the diagram: 1. Intercooler assembly; 2. Hydraulic system radiator assembly; 3. Hinge shaft; 4. Diesel engine radiator assembly; 5. Elastic locking mechanism; 6. Main cooling fan; 7. Fan shroud; 8. Frame; 9. Overflow pipe; 10. Overflow tank; 1.1 New energy cooling water tank; 1.2 New energy cooling fan; 1.3 Diesel engine intercooler; 1.4 Intercooler cooling fan; 2.1 Hydraulic radiator; 2.2 Hydraulic cooling fan; 4.1 Diesel engine cooling water tank; 4.2 Diesel engine cooling fan; 8.1 Top plate; 8.2 Bottom plate; 8.3 Rear frame. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that 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.

[0033] like Figure 1As shown in Figure 7, this invention provides a multi-functional thermal management system for precision control of agricultural machinery, including a main cooling fan 6 and a frame 8. The frame 8 includes a top plate 8.1, a bottom plate 8.2, and a rear frame 8.3. The upper end of the rear frame 8.3 is connected to the rear end of the top plate 8.1, and the lower end is connected to the rear end of the bottom plate 8.2. The main cooling fan 6 is installed in the middle of the rear frame 8.3. The left side of the top plate 8.1 is connected to the left side of the bottom plate 8.2 via an intercooler assembly 1, and the right side of the top plate 8.1 is connected to the right side of the bottom plate 8.2 via a diesel engine radiator assembly 4. The front end of the intercooler assembly 1 is tilted to the right, and the front end of the diesel engine radiator assembly 4 is tilted to the left. The front end of the diesel engine radiator assembly 4 and the front end of the intercooler assembly 1 are connected by a hydraulic radiator assembly 2. The intercooler assembly 1 includes a new energy cooling water tank 1.1, a new energy radiator fan 1.2, a diesel engine intercooler 1.3, and an intercooler radiator fan 1.4; the hydraulic system radiator assembly 2 includes a hydraulic radiator 2.1 and a hydraulic radiator fan 2.2; the diesel engine radiator assembly 4 includes a diesel engine cooling water tank 4.1 and a diesel engine radiator fan 4.2; the new energy cooling water tank 1.1, the diesel engine intercooler 1.3, the hydraulic radiator 2.1, and the diesel engine cooling water tank 4.1 are all grid-type components with frames; the axes of the new energy radiator fan 1.2, the intercooler radiator fan 1.4, the hydraulic radiator fan 2.2, and the diesel engine radiator fan 4.2 are all oriented towards the main radiator fan 6. It should be noted that the new energy cooling water tank 1.1, the diesel engine intercooler 1.3, the hydraulic radiator 2.1, and the diesel engine cooling water tank 4.1 are all grid-type components with frames. These grid-type components are heat dissipation grid structures, with cooling medium channels inside the grids, and these channels connect to the corresponding heat dissipation subsystems. Although the grid structure is not shown in the accompanying drawings of this invention, it is known that when the fan's airflow direction is parallel to the channel between the grids, the airflow can blow through the grid components and the heat dissipation efficiency is high. Therefore, although the grid is not illustrated in this invention, it will not cause any ambiguity for those skilled in the art regarding the layout of the relevant structure.

[0034] Specifically, in Embodiment 1 of the present invention, the main cooling fan 6, the new energy cooling fan 1.2, the intercooler cooling fan 1.4, the hydraulic cooling fan 2.2, and the diesel engine cooling fan 4.2 are all electric-driven fans that can rotate in both directions. Furthermore, there are multiple new energy cooling fans 1.2, intercooler cooling fans 1.4, hydraulic cooling fans 2.2, and diesel engine cooling fans 4.2. Multiple new energy cooling fans 1.2 are distributed in a new energy cooling fan matrix, multiple intercooler cooling fans 1.4 are distributed in an intercooler cooling fan matrix, multiple hydraulic cooling fans 2.2 are distributed in a hydraulic cooling fan matrix, and multiple diesel engine cooling fans 4.2 are distributed in a diesel engine cooling fan matrix.

[0035] The above-described structural layout of the present invention enables each heat dissipation subsystem to have an independent cooling fan, facilitating precise control during heat dissipation; taking Embodiment 1 as an example, the control method is as follows:Figure 8 As shown, the details are as follows:

[0036] Set the initial ambient temperature T0, the main cooling fan start temperature T1, the new energy cooling fan start temperature T2a, the intercooler cooling fan start temperature T2b, the hydraulic cooling fan start temperature T2c, the diesel engine cooling fan start temperature T2d, and the main cooling fan start temperature T1.

[0037] After the system starts up, when the ambient temperature reaches T0, the system will start to operate automatically, and at this time the cooling medium of each heat dissipation subsystem will begin to flow.

[0038] The system collects the temperature T3 of the new energy system, the temperature T4 of the diesel engine intercooler system, the temperature T5 of the hydraulic system, and the temperature T6 of the diesel engine coolant in real time; when T3≥T1, T4≥T1, T5≥T1, or T6≥T1, the main cooling fan 6 starts to operate.

[0039] During the operation of the main cooling fan 6, when T3≥T2a, T4≥T2b, T5≥T2c or T6≥T2d, the corresponding new energy cooling fan matrix, intercooler cooling fan matrix, hydraulic cooling fan matrix or diesel engine cooling fan matrix will start to operate.

[0040] When any of the cooling subsystems is put into operation, the system determines whether T3 to T6 are balanced. If any of T3 to T6 is unbalanced, the system activates the fan matrix of all cooling subsystems and adjusts the speed of the main cooling fan 6, the new energy cooling fan matrix, the intercooler cooling fan matrix, the hydraulic cooling fan matrix, and the diesel engine cooling fan matrix to bring T3 to T6 into balance. If T3 to T6 are in a balanced state, only the speed of the main cooling fan 6 is adjusted to maintain the balance of T3 to T6.

[0041] During the process of adjusting the speed of the main cooling fan 6 to maintain the thermal balance of the cooling system, if the main cooling fan 6 reaches the balance between T3 and T6 before reaching its maximum speed, then an AI energy-saving calculation analysis is performed to rationally match the speeds of the electric drive main cooling fan 6, the new energy cooling fan matrix, the intercooler cooling fan matrix, the hydraulic cooling fan matrix, and the diesel engine cooling fan matrix, further achieving the goals of energy saving and environmental protection; if the main cooling fan 6 reaches its maximum speed but any of T3 to T6 is not balanced, then the speeds of the fan matrices of all cooling subsystems are adjusted again to bring T3 to T6 into balance.

[0042] Taking Example 1 as an example, during normal operation of the multifunctional thermal management system of the present invention, the electric drive main cooling fan 6 operates in the forward direction to perform suction operation, guiding the heat from the new energy cooling water tank 1.1, diesel engine intercooler 1.3, hydraulic radiator 2.1, and diesel engine cooling water tank 4.1 to the outside of the engine body along the fan guide 7; the new energy cooling fan matrix, intercooler cooling fan matrix, hydraulic cooling fan matrix, and diesel engine cooling fan matrix operate in the forward direction in a timely manner to perform blowing operation, assisting the suction operation of the electric drive main cooling fan 6. After the multifunctional thermal management system has been working for a period of time, if it is determined that weeds attached to the outer surface of each heat dissipation subsystem need to be cleaned, the cleaning program is started. The electric drive main cooling fan 6, new energy cooling fan 1.2, intercooler cooling fan 1.4, hydraulic cooling fan 2.2, and diesel engine cooling fan 4.2 operate in reverse to blow away the attached weeds. After the cleaning is completed, the cleaning program is closed, and the multifunctional thermal management system returns to the working state.

[0043] As can be seen, the present invention has the advantages of high independence and high control precision through the above operations, and also has the function of cleaning impurities.

[0044] The upper end of the diesel engine intercooler 1.3 is connected to the left front end of the top plate 8.1, and the lower end is connected to the left front end of the bottom plate 8.2. The new energy cooling water tank 1.1 is located between the diesel engine intercooler 1.3 and the rear frame 8.3. The front ends of both the new energy cooling water tank 1.1 and the diesel engine intercooler 1.3 are tilted to the right. The new energy cooling fan 1.2 is distributed on the left side wall of the new energy cooling water tank 1.1, and the intercooler cooling fan 1.4 is distributed on the left side wall of the diesel engine intercooler 1.3.

[0045] The diesel engine cooling water tank 4.1 is connected to the top plate 8.1, the bottom plate 8.2 and the rear frame 8.3 respectively. The front end of the diesel engine cooling water tank 4.1 is tilted to the left, and the diesel engine cooling fan 4.2 is distributed on the right side wall of the diesel engine cooling water tank 4.1.

[0046] The right end of the hydraulic radiator 2.1 is rotatably hinged to the diesel engine coolant tank 4.1 via a hinge shaft 3, and the left end of the hydraulic radiator 2.1 is connected to the diesel engine intercooler 1.3 via an elastic locking mechanism 5; the hydraulic cooling fans 2.2 are distributed on the front wall of the hydraulic radiator 2.1. This structural design allows the hydraulic system radiator assembly 2 to be manually opened during use, enabling more thorough cleaning and facilitating maintenance.

[0047] The rear frame 8.3 is connected to a fan shroud 7, and the main cooling fan 6 is installed in the middle of the rear frame 8.3 through the fan shroud 7.

[0048] The rear frame 8.3 is equipped with an overflow reservoir 10, which is located to the right of the main cooling fan 6. The overflow reservoir 10 is connected to the diesel engine coolant tank 4.1 via an overflow pipe 9. When the temperature of the diesel engine coolant tank rises, the overflow reservoir 10 can collect the overflowing cooling medium to prevent the medium from being lost.

[0049] Both the top plate 8.1 and the bottom plate 8.2 are equipped with sealing strips at their front ends.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0051] The parts of this invention not described in detail are prior art.

Claims

1. A multi-functional thermal management system for precision control of agricultural machinery, comprising a main cooling fan (6) and a frame (8), characterized in that: The frame (8) includes a top plate (8.1), a bottom plate (8.2) and a rear frame (8.3). The upper end of the rear frame (8.3) is connected to the rear end of the top plate (8.1), and the lower end is connected to the rear end of the bottom plate (8.2). A main cooling fan (6) is installed in the middle of the rear frame (8.3). The top plate (8.1) is connected to the left side of the bottom plate (8.2) via the intercooler assembly (1), and the top plate (8.1) is connected to the right side of the bottom plate (8.2) via the diesel engine radiator assembly (4). The front end of the intercooler assembly (1) is tilted to the right, and the front end of the diesel engine radiator assembly (4) is tilted to the left; the front end of the diesel engine radiator assembly (4) and the front end of the intercooler assembly (1) are connected by a hydraulic system radiator assembly (2). The intercooler assembly (1) includes a new energy cooling water tank (1.1), a new energy radiator fan (1.2), a diesel engine intercooler (1.3), and an intercooler radiator fan (1.4). The hydraulic system radiator assembly (2) includes a hydraulic radiator (2.1) and a hydraulic cooling fan (2.2). The diesel engine radiator assembly (4) includes a diesel engine coolant tank (4.1) and a diesel engine cooling fan (4.2). The new energy cooling water tank (1.1), diesel engine intercooler (1.3), hydraulic radiator (2.1) and diesel engine cooling water tank (4.1) are all grid-type components with frames; The axes of the new energy cooling fan (1.2), the intercooler cooling fan (1.4), the hydraulic cooling fan (2.2) and the diesel engine cooling fan (4.2) are respectively oriented toward the main cooling fan (6).

2. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: The upper end of the diesel engine intercooler (1.3) is connected to the left front end of the top plate (8.1), and the lower end is connected to the left front end of the bottom plate (8.2). The new energy cooling water tank (1.1) is set between the diesel engine intercooler (1.3) and the rear frame (8.3). The front ends of both the new energy cooling water tank (1.1) and the diesel engine intercooler (1.3) are tilted to the right. The new energy cooling fan (1.2) is distributed on the left side wall of the new energy cooling water tank (1.1), and the intercooler cooling fan (1.4) is distributed on the left side wall of the diesel engine intercooler (1.3).

3. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: The diesel engine cooling water tank (4.1) is connected to the top plate (8.1), the bottom plate (8.2) and the rear frame (8.3) respectively. The front end of the diesel engine cooling water tank (4.1) is tilted to the left, and the diesel engine cooling fan (4.2) is distributed on the right side wall of the diesel engine cooling water tank (4.1).

4. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: The right end of the hydraulic radiator (2.1) is rotatably hinged to the diesel engine cooling water tank (4.1) via a hinge shaft (3), and the left end of the hydraulic radiator (2.1) is connected to the diesel engine intercooler (1.3) via an elastic locking mechanism (5); the hydraulic cooling fan (2.2) is distributed on the front wall of the hydraulic radiator (2.1).

5. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: The rear frame (8.3) is connected to a fan shroud (7), and the main cooling fan (6) is installed in the middle of the rear frame (8.3) through the shroud (7).

6. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: The rear frame (8.3) is provided with an overflow tank (10), which is located to the right of the main cooling fan (6). The overflow tank (10) is connected to the diesel engine cooling water tank (4.1) through an overflow pipe (9).

7. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: Both the top plate (8.1) and the bottom plate (8.2) are provided with sealing strips at their front ends.

8. The multi-functional thermal management system for precision control of agricultural machinery according to claim 1, characterized in that: The main cooling fan (6), the new energy cooling fan (1.2), the intercooler cooling fan (1.4), the hydraulic cooling fan (2.2), and the diesel engine cooling fan (4.2) are all electric-driven fans that can rotate in both directions, and there are multiple new energy cooling fans (1.2), intercooler cooling fans (1.4), hydraulic cooling fans (2.2), and diesel engine cooling fans (4.2).

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