Harvester multi-module parallel heat dissipation system and harvester

Abstract

The utility model embodiment provides a kind of harvesting machine multi-module parallel type heat dissipation system and harvesting machine, belong to agricultural machinery heat dissipation technical field.The heat dissipation system includes: heat dissipation module, including multiple core body and fan of alignment core body, core body is used to accommodate cooling medium, fan is used to cool cooling medium;And at least one set of cooling pipeline, the passage is formed by being communicated with core body, including multiple parallel pipelines, each parallel pipeline is used to exchange heat between cooled cooling medium and at least one motor, and different parallel pipelines corresponding motor is different.The utility model improves cooling pipeline, makes cooling medium with each motor or electric control heat exchange in parallel mode, simple structure, it is convenient to lay out, different, for the different heat dissipation needs of cooling component, carry out corresponding pipeline setting, cooling sequence, and flexibility is strong.Multi-module development makes that the component of different heat dissipation needs is cooled by different core body using corresponding cooling pipeline, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery thermal management technology, specifically to a multi-module parallel heat dissipation system for a harvester and a harvester. Background Technology

[0002] Traditional harvesters address heat dissipation issues by employing a three-section (intercooler, water cooler, and hydraulic cooling system) series cooling system for the engine. While this approach addresses the system's cooling requirements to some extent, it doesn't consider the heat dissipation of high-voltage components in hybrid harvesters. Hybrid harvesters have highly complex cooling systems with numerous high-voltage components and a large number of motors and electronic controls, making the entire cooling system far more intricate. Using a traditional cooling system in such cases would be insufficient to meet the overall cooling needs of the machine, easily leading to rapid and excessively high temperatures. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a multi-module parallel heat dissipation system and a harvester. This multi-module parallel heat dissipation system is designed for harvesters with multiple internal motors and high motor heat dissipation requirements. Through simple parallel pipeline settings and improvements to the heat dissipation modules, it improves the heat dissipation efficiency of complex systems and optimizes the heat dissipation effect.

[0004] To achieve the above objectives, this utility model provides a multi-module parallel cooling system for a harvester. The harvester's functional modules include different types of motors. The cooling system includes: a cooling module comprising multiple cores and a fan, the cores being used to contain a cooling medium and the fan being used to cool the cooling medium; and at least one set of cooling pipes connecting the cores to form a passage, comprising multiple parallel pipes, each parallel pipe being used to exchange heat between the cooling medium and at least one motor, and different parallel pipes corresponding to different motors.

[0005] Optionally, the heat dissipation module includes a first heat dissipation module and a second heat dissipation module. In the first heat dissipation module, multiple cores are arranged horizontally, and in the second heat dissipation module, multiple cores are arranged vertically. Each cooling pipe is connected to one core.

[0006] Optionally, the fan of the first heat dissipation module and the fan of the second heat dissipation module are connected by belt drive.

[0007] Optionally, the functional module includes a range extender module, which includes a range extender motor and a range extender control motor. Two parallel pipes are set in a cooling pipe to exchange heat with the range extender motor and the range extender control motor, respectively.

[0008] Optionally, the functional module also includes a working module, which includes multiple working motors, including a threshing motor, a feeding motor, a front axle motor, a separating motor, a blower motor, a screen box motor, a hydraulic motor, a rear axle motor, a chopping motor, a grain unloading motor, and a cooling motor, and / or The cooling medium is oil or ethylene glycol.

[0009] Optionally, in the direction in which the cooling medium flows within the parallel pipeline, the working motor is located after the range extender motor and the range extender control motor.

[0010] Optionally, two parallel pipes are provided in another cooling pipe system. One parallel pipe exchanges heat with a portion of the working motors, and the other parallel pipe exchanges heat with another portion of the working motors.

[0011] Optionally, in the other cooling pipeline, one parallel pipeline exchanges heat with the separation motor, fan motor, screen box motor, and hydraulic motor; the other parallel pipeline exchanges heat with the rear axle motor, chopping motor, unloading motor, and cooling motor.

[0012] Optionally, the cold end of the cooling pipeline is equipped with a water pump to provide driving force for the cooling medium to meet the cooling demand, and / or the hot end of the cooling pipeline is equipped with a static mixer to neutralize the temperature of the cooling medium after heat exchange in different parallel pipelines, and / or a flow control valve is provided in the parallel pipeline to control the flow rate of the cooling medium in the parallel pipeline.

[0013] Secondly, the harvester of this utility model includes at least: a functional module, including different types of motors; and a multi-module parallel heat dissipation system for the harvester as described above, for heat exchange with the motors in the functional module.

[0014] Through the above technical solution, this utility model improves the cooling pipeline, enabling the cooling medium to exchange heat with each motor or electronic control unit in parallel. The structure is simple and easy to install. Different pipeline configurations and cooling sequences are designed to meet the varying heat dissipation needs of the components being cooled, offering high flexibility. Multi-module development has been implemented, with different cooling pipelines used to cool different cores for components with different heat dissipation requirements, facilitating the satisfaction of each component's heat dissipation needs and enhancing practicality. Building upon traditional hydraulic cooling and intercooling, this invention provides cooling for different types of working motors, making it suitable not only for commercial vehicles and passenger cars but also for electric vehicles with numerous components, high heat dissipation requirements, and diverse heat dissipation needs. Other features and advantages of this utility model embodiment will be described in detail in the following detailed description section. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the basic structure of a multi-module parallel heat dissipation system; Figure 2 This is a schematic diagram of the basic structure of the heat dissipation module with partitioned core. Figure 3 This is a schematic diagram showing the connection between the fan of the first heat dissipation module and the fan of the second heat dissipation module; Figure 4 This is an embodiment that uses a first cooling pipe for heat dissipation; Figure 5 This is an embodiment of heat dissipation using a second cooling pipe.

[0016] Explanation of reference numerals in the attached figures 1 is the first core arranged horizontally in the first heat dissipation module; 2 is the second core arranged horizontally in the first heat dissipation module; 3 is the third core arranged horizontally in the first heat dissipation module; 4 is the first core arranged vertically in the second heat dissipation module; 5 is the second core arranged vertically in the second heat dissipation module; 6 is the third core arranged vertically in the second heat dissipation module; 7 is the first heat dissipation module; 8 is the second heat dissipation module; 9 is the belt; 10 is the fan of the first heat dissipation module; 11 is the fan of the second heat dissipation module; and 12 is the heat dissipation drive motor. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0018] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. In the embodiments of this application, certain existing industry solutions such as software, components, and models may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solution of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0019] The terms and meanings used in this utility model are as follows: Engine intercooler: also known as the engine intake intercooler, its function is to reduce the temperature of the high-temperature air after turbocharging, increase the intake air volume, and thus increase the engine power.

[0020] Engine water cooler: also called engine water tank, it cools the engine through forced water circulation to ensure that the engine can work continuously within the normal temperature range.

[0021] High-voltage components: Components that generate, control, and utilize high-voltage electricity. This includes high-voltage motors and their controllers.

[0022] High-voltage motor: This refers to a high-voltage electric motor. Compared to the low-voltage electricity (usually 12V or 24V) of the entire combine harvester, the high-voltage motor uses a higher power supply voltage, such as 600V. The high-voltage motor converts electrical energy into mechanical energy, providing power for the vehicle's movement and operation. In this invention, the high-voltage motor includes a range extender motor, a range extender control motor, and a working motor, which are installed in different parts of the harvester.

[0023] Hydraulic components: use liquid as the working medium and utilize the pressure energy of the liquid to transmit power.

[0024] With the widespread application of electricity as a driving force, hybrid electric harvesters require cooling for high-pressure components in addition to traditional engine intercooling, water cooling, and hydraulic components. This invention divides the heat dissipation core into different zones for different components, allowing for targeted and adaptive changes in the type or temperature of the cooling medium to achieve flexible heat dissipation. Simultaneously, parallel pipelines are installed within each zone, with appropriate pipeline layouts and locations designed based on the required flow rate, internal flow resistance, and inlet temperature of the components being cooled. A water pump with a suitable head is also configured according to the flow resistance and flow rate. As mentioned above, hybrid electric harvesters have components requiring cooling similar to those in conventional and pure electric vehicles, resulting in limited space. Therefore, this invention employs a multi-zone, multi-module parallel cooling system, achieving integrated cooling for the engine, hydraulic system, and motor / electronic control system of hybrid or pure electric harvesters, ensuring stable and reliable operation of all important components requiring cooling.

[0025] The multi-module parallel cooling system for harvesters described in this utility model is applicable to harvesters whose functional modules include different types of motors. For example, the aforementioned hybrid or fully electric harvesters, in addition to the engine requiring cooling, also include various electrically driven functional motors. Such harvesters have a large number of components, and the heat dissipation requirements of different components vary significantly. Please refer to [link / reference]. Figure 1This invention proposes a multi-module parallel cooling system for harvesters. The system includes cooling modules and at least one set of cooling pipes. Each cooling module comprises multiple cores and a fan. The cores contain the cooling medium, and the fan is directed at the core to cool the medium within it. The cooling module can be an integration of multiple radiators, dissipating the heat generated after the cooling medium exchanges heat with the components being cooled through heat exchange with the outside air. The cooling pipes connect to the cores, forming a passageway, and include multiple parallel pipes. Each parallel pipe facilitates heat exchange between the cooling medium and at least one motor; that is, the low-temperature cooling medium absorbs the heat from the high-temperature motor, and different parallel pipes correspond to different motors. This invention uses simple parallel pipes to meet the heat dissipation needs of different components, and different types of motors use different cores for cooling, fully considering the complexities of motors.

[0026] To meet the heat dissipation needs of a wide variety of components requiring cooling, increase the heat dissipation functional area, and avoid interference with the working parts of the whole machine (i.e., high-voltage components in the functional modules), this utility model adopts a multi-module heat dissipation module, including a first heat dissipation module 7 and a second heat dissipation module 8. Please refer to [link / reference]. Figure 2 The left side represents the first heat dissipation module, and the right side represents the second heat dissipation module. Each heat dissipation module contains a fan and a core, which is hidden inside the device, and each core is located in a different section. Because the inlet temperature and cooling medium requirements of each component to be cooled are different, the requirements for the heat dissipation cores also differ. Therefore, the entire machine's engine, hydraulic components, high-pressure components, etc., are divided into multiple cooling pipe sections, with each cooling pipe section connecting to a corresponding core. The cores are arranged in a multi-section configuration: multiple cores in the first heat dissipation module 7 are arranged horizontally, and multiple cores in the second heat dissipation module 8 are arranged vertically. The fan 10 of the first heat dissipation module 7 and the fan 10 of the second heat dissipation module 8 are connected by a belt 9. Furthermore, to achieve better integration and reduce volume redundancy, the first heat dissipation module 7 and the second heat dissipation module 8 are arranged side-by-side, tightly integrated into one unit. Please refer to [link / reference]. Figure 3In this design, the fan 11 in the first heat dissipation module 7 acts as the driving wheel, while the fan 10 in the second heat dissipation module 8 acts as the driven wheel. Power is transmitted via a belt 9, with the heat dissipation drive motor 12 providing the power source. The power of the heat dissipation drive motor 12 is directly transmitted to the cooling fan 11 in the first heat dissipation module 7, which acts as the driving wheel, and the cooling fan 10 in the second heat dissipation module 8 acts as the driven wheel, all via a belt 9. This design results in a more compact structure, facilitating miniaturization. In this embodiment, the belt drive ratio is 1:1, but other ratios can also be used. The cooling fans are driven by a motor, allowing both the first and second heat dissipation modules 7 and 8 to adjust their fan speeds according to actual operating conditions, providing greater flexibility in adjustment. Traditional heat sinks are inherently tall. This invention uses two horizontally arranged side-by-side heat dissipation modules to cool the components, solving the problem of heat sink assembly on the overall machine. Furthermore, the integrated control of the two heat dissipation modules reduces the number of power input points, resulting in greater space utilization and lower costs.

[0027] For details, please refer to Figure 2 This utility model's heat dissipation system adopts a six-zone structure, namely, three cores arranged horizontally in the first heat dissipation module 7 and three cores arranged vertically in the second heat dissipation module 8. The first heat dissipation module 7 includes cores 1, 2, and 3, corresponding to heat dissipation zones one, two, and three, respectively, primarily for cooling high-flow-rate engines and range extender motors with high heat dissipation requirements. In this embodiment, core 1 dissipates heat from the engine intercooler, core 2 dissipates heat from the engine water cooler, and core 3 dissipates heat from the range extender motor, range extender control motor, and / or some working motors. The second heat dissipation module 8 includes cores 4, 5, and 6, corresponding to heat dissipation zones four, five, and six, respectively. In this embodiment, core 4 dissipates heat from hydraulic components, and cores 5 and 6 dissipate heat from the working motor controller and the working motor, respectively. This design fully considers the heat dissipation needs of different components, achieving optimization in the core design of the radiator, thus achieving component heat dissipation while maximizing space utilization.

[0028] In traditional cooling systems, the engine, hydraulic system, and motor control system utilize relatively simple series piping for heat dissipation. However, due to the large number of motors and motor controllers, using series piping for all components would result in significant flow resistance and dust generation in the cooling circuit, hindering heat dissipation. Therefore, this invention connects the cooling pipes using three-way and four-way valves, creating a multi-pipe and parallel piping solution to achieve effective heat dissipation for all components within the machine.

[0029] The harvester's functional modules also include a range extender module, which provides electric power to the harvester. This range extender module includes a range extender motor and a range extender control motor, with two parallel pipes connected in the first cooling pipe circuit for heat exchange with the range extender motor and the range extender control motor, respectively.

[0030] The functional modules also include working modules to implement different processes of the harvester, such as threshing motors and feeding motors. The working modules include multiple working motors to drive the machine operation corresponding to each process. In this embodiment, the first cooling pipe is an example of the aforementioned "one cooling pipe," and the second cooling pipe is an example of the aforementioned "other cooling pipe." When using the first cooling pipe, the working motor is located after the range extender motor and the range extender control motor in the direction in which the cooling medium flows within the parallel pipes. When using the second cooling pipe, two parallel pipes are set in the second cooling pipe; one parallel pipe exchanges heat with a portion of the working motors, and the other parallel pipe exchanges heat with another portion of the working motors. Specifically, the working motors include a threshing motor, a feeding motor, a front axle motor, a separating motor, a blower motor, a screen box motor, a hydraulic motor, a rear axle motor, a shredding motor, a grain unloading motor, and a cooling motor. The range extender motor is part of the range extender, converting the mechanical energy of the diesel engine into electrical energy to provide power for the harvester's operation and movement, and to charge the battery. The screen box motor provides power for the operation of the harvester's screen box; the blower motor provides power for the harvester's blower; the front axle motor provides power for the harvester's front axle travel; the threshing motor provides power for the harvester's threshing system; the feeding motor provides power for the harvester's feeding system; the separating motor provides power for the harvester's material separation; the cooling motor provides power for the harvester's overall cooling system; the rear axle motor provides power for the harvester's rear axle travel; the shredding motor provides power for the harvester's shredder; and the hydraulic motor provides power for the hydraulic components.

[0031] In addition, to enhance the cooling effect and control, this invention also employs a water pump, a static mixer, a flow control valve, and a multi-directional valve. A water pump is installed at the cold end of the cooling pipeline to provide the driving force needed to cool the medium, allowing the medium to circulate and effectively cool the components. In this embodiment, an electric water pump driven by an electric motor is used. A static mixer is installed at the hot end of the cooling pipeline to neutralize the temperature of the cooling medium after heat exchange in different parallel pipelines, solving the problem of inconsistent outlet temperatures between multiple parallel pipelines. The static mixer mixes the cooling medium, which is more conducive to cooling the core of the heat dissipation module. Flow control valves are installed in the parallel pipelines to adjust the fluid flow rate by changing the valve opening, thereby controlling the flow rate of the cooling medium in the parallel pipeline and ensuring consistent flow resistance in the target parallel pipelines, resulting in a basically consistent flow rate of the cooling medium. Different flow rates can be set for different parallel pipelines depending on the configuration of the flow control valve and the water pump.

[0032] The working motor can be cooled by a first cooling pipe, a second cooling pipe, or both.

[0033] When using the first cooling pipe circuit, the working motor, located after the range extender motor and range extender control motor, exchanges heat with the first cooling pipe circuit in a series or parallel connection. Please refer to [link / reference]. Figure 4In this embodiment, four parallel pipelines (first parallel pipeline, second parallel pipeline, third parallel pipeline and fourth parallel pipeline) are set in the first cooling pipeline. After passing through the electric water pump, two parallel pipelines are first formed (first parallel pipeline and second parallel pipeline). Then, each of the two parallel pipelines forms another two parallel pipelines (the latter part of the first parallel pipeline, the latter part of the second parallel pipeline, the third parallel pipeline and the fourth parallel pipeline). The first parallel pipeline, the second parallel pipeline and the third parallel pipeline are all equipped with flow control valves. Since the flow resistance in different parallel pipelines (which may vary due to the pressure drop, height difference and internal structure of the water channel of the component itself) may be inconsistent, the flow control valves are adjusted to keep the flow resistance consistent. Specifically, the cooling medium after the core 3 is cooled flows through the main channel of the first cooling pipe, driven by an electric water pump, and enters the first parallel pipe and the second parallel pipe respectively through a three-way reversing valve. Due to the inconsistent flow resistance of the two parallel branches, a flow control valve is added to the lower pipe to maintain consistency. In the first parallel pipe, it first exchanges heat with the range extender motor, then enters the third parallel pipe to exchange heat with the threshing motor. In the second parallel pipe, it first exchanges heat with the range extender control motor, then with the feed motor, and simultaneously enters the fourth parallel pipe to exchange heat with the front axle motor, achieving a heat dissipation pipe design with different flow requirements. The four parallel pipes converge at the end. The high-temperature cooling medium passes through a static mixer to neutralize the temperature of the coolant in different pipes, and then re-enters the core 3 to be cooled by the fan, and then the above process is repeated.

[0034] When using a second cooling pipeline, two parallel pipelines are installed within it. One parallel pipeline exchanges heat with a portion of the working motors, and the other parallel pipeline exchanges heat with another portion of the working motors. The sequence of the working motors and whether they are located on the same parallel pipeline are determined based on the position of the working motors or their components within the overall machine, as well as the flow resistance within the parallel pipelines. Please refer to [link / reference]. Figure 5 In this embodiment, in the second cooling pipeline, one parallel pipeline exchanges heat with the separating motor, fan motor, screen box motor, and hydraulic motor; the other parallel pipeline exchanges heat with the rear axle motor, chopping motor, unloading motor, and cooling motor. The cooling medium cooled by the core 6 enters the first parallel pipeline, and driven by an electronic water pump, exchanges heat with the separating motor, fan motor, screen box motor, and hydraulic motor in sequence. It then enters the second parallel pipeline, and driven by an electronic water pump, exchanges heat with the rear axle motor, chopping motor, unloading motor, and cooling motor in sequence. Afterward, the high-temperature cooling medium merges at the ends of the first and second parallel pipelines and re-enters the core 6. After cooling, the above process is repeated.

[0035] The cooling medium is oil or ethylene glycol. In this embodiment, the motor, electronic control system, and engine use ethylene glycol solution as the cooling medium, while hydraulic equipment uses hydraulic oil. Of course, other cooling media that improve cooling efficiency can also be used.

[0036] The harvester of this utility model includes at least: a functional module, including different types of motors; and a multi-module parallel heat dissipation system for heat exchange with the motors in the functional module.

[0037] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0038] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A multi-module parallel cooling system for a harvester, characterized in that, The harvester's functional modules include different types of motors, and the cooling system includes: A heat dissipation module includes multiple cores and a fan, the cores being used to contain a cooling medium, and the fan being used to cool the cooling medium; and At least one cooling pipeline is connected to the core and forms a passage, including multiple parallel pipelines, each of the parallel pipelines being used to exchange heat between the cooling medium and at least one of the motors, and different parallel pipelines corresponding to different motors.

2. The multi-module parallel heat dissipation system according to claim 1, characterized in that, The heat dissipation module includes a first heat dissipation module and a second heat dissipation module. In the first heat dissipation module, multiple cores are arranged horizontally, and in the second heat dissipation module, multiple cores are arranged vertically. Each set of cooling pipes is connected to one of the cores.

3. The multi-module parallel heat dissipation system according to claim 2, characterized in that, The fan of the first heat dissipation module is connected to the fan of the second heat dissipation module via belt drive.

4. The multi-module parallel heat dissipation system according to claim 1, characterized in that, The functional module includes a range extender module, which includes a range extender motor and a range extender control motor. Two parallel pipes are provided in a cooling pipe circuit, which exchange heat with the range extender motor and the range extender control motor respectively.

5. The multi-module parallel heat dissipation system according to claim 1 or 4, characterized in that, The functional module also includes a working module, which comprises multiple working motors, including a threshing motor, a feeding motor, a front axle motor, a separating motor, a blower motor, a screen box motor, a hydraulic motor, a rear axle motor, a chopping motor, a grain unloading motor, and a cooling motor, and / or The cooling medium is oil or ethylene glycol.

6. The multi-module parallel heat dissipation system according to claim 5, characterized in that, In the direction in which the cooling medium flows within the parallel pipeline, the working motor is located after the range extender motor and the range extender control motor.

7. The multi-module parallel heat dissipation system according to claim 5, characterized in that, Two parallel pipes are provided in another cooling pipe, one of which exchanges heat with a portion of the working motor, and the other of which exchanges heat with another portion of the working motor.

8. The multi-module parallel heat dissipation system according to claim 7, characterized in that, In the other cooling pipeline, one of the parallel pipelines exchanges heat with the separation motor, fan motor, screen box motor, and hydraulic motor; the other parallel pipeline exchanges heat with the rear axle motor, shredding motor, unloading motor, and cooling motor.

9. The multi-module parallel heat dissipation system according to claim 1, characterized in that, The cold end of the cooling pipeline is equipped with a water pump to provide driving force for the cooling medium to meet the cooling demand, and / or The hot end of the cooling pipe is equipped with a static mixer to neutralize the temperature of the cooling medium after heat exchange in the different parallel pipes, and / or The parallel pipeline is equipped with a flow control valve to control the flow rate of the cooling medium in the parallel pipeline.

10. A harvester, characterized in that, At least including: Functional modules, including different types of motors; as well as The harvester multi-module parallel cooling system as described in any one of claims 1 to 9 is used to exchange heat with the motor in the functional module.

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