Vehicle-mounted liquid cooling source device, control method thereof and motor vehicle

Abstract

The application discloses a vehicle-mounted liquid cooling source device, a control method thereof and a motor vehicle. The vehicle-mounted liquid cooling source device comprises multiple sets of refrigeration units, and each refrigeration unit is provided with a temperature sensor at a water outlet of chilled water. Adjustable air supply devices are arranged between adjacent air inlet sides of two sets of refrigeration units. According to the outlet water temperature of the chilled water detected by the temperature sensor, the adjustable air supply devices automatically adjust the air supply amount of the refrigeration unit, and make the outlet water temperature of the chilled water of all the refrigeration units consistent. In a small space of the vehicle, the adjustable air supply devices are arranged between the adjacent two sides of the two sets of refrigeration units, so as to automatically improve the air inlet amount and improve the heat exchange amount. Therefore, the multiple sets of refrigeration unit module structures can be adopted, the small space and large cooling capacity supply of the refrigeration unit are realized, and the working efficiency of the refrigeration system is improved. The application is favorable for promoting the modular development of the refrigeration unit of the vehicle-mounted liquid cooling source device, and makes the operation of the refrigeration unit of the vehicle-mounted liquid cooling source device more reliable and stable.

Description

Technical Field

[0001] This invention relates to the field of refrigeration technology, and more particularly to a vehicle-mounted liquid cooling source device that can provide chilled water cooling for electronic devices in the field, its control method, and a motor vehicle equipped with the vehicle-mounted liquid cooling source device. Background Technology

[0002] With industrial development and the needs of defense industries, many industrial electronic devices need to operate temporarily in remote islands, deserts, or deep forests. When these devices operate for extended periods, they release significant amounts of heat, causing their temperatures to rise rapidly. Failure to cool them promptly can affect their normal operation or even damage them. However, due to the specific environments in which these electronic devices operate, establishing fixed cooling systems is not feasible. Therefore, vehicle-mounted mobile refrigeration equipment has emerged to address this problem. A typical vehicle-mounted mobile refrigeration device is a vehicle-mounted liquid cooling source unit. This unit utilizes a motor vehicle as a platform for the refrigeration system, which consists of multiple independent refrigeration units. While ensuring rapid mobility, each refrigeration unit uses a special refrigerant, such as a 66% ethylene glycol solution, to exchange heat with the refrigerant in the evaporator of the refrigeration unit, producing chilled water. This chilled water is then supplied to the electronic devices requiring cooling, thus achieving the purpose of cooling the electronic equipment. Existing vehicle-mounted liquid cooling systems typically consist of a chassis, multiple refrigeration units mounted on the chassis, and a hydraulic module for chilled water circulation. Due to space limitations in the chassis, the air intake space for each refrigeration unit is small, resulting in inconsistent air intake conditions and inconsistent chilled water outlet temperatures. This means that the modular design of the refrigeration units does not match the cooling capacity, significantly reducing the overall efficiency of the refrigeration system and hindering the modular development of vehicle-mounted liquid cooling systems.

[0003] Therefore, how to overcome the defect of inconsistent chilled water outlet temperature in each refrigeration unit of the existing vehicle-mounted liquid cooling source device, which leads to a reduction in the working efficiency of the entire refrigeration system, is a problem that workers in this field are striving to solve. Summary of the Invention

[0004] This invention addresses the problem of inconsistent chilled water outlet temperatures in existing vehicle-mounted liquid cooling source devices, which leads to reduced refrigeration system efficiency. It provides a vehicle-mounted liquid cooling source device and its control method that ensure consistent chilled water outlet temperatures across all refrigeration units, along with a corresponding motor vehicle. This invention facilitates modular construction of the refrigeration units in the vehicle-mounted liquid cooling source device, resulting in more reliable and stable operation of the entire refrigeration system and significantly improved efficiency.

[0005] The present invention provides an on-board liquid cooling source device, comprising multiple sets of refrigeration units. Each refrigeration unit is equipped with a temperature sensor at its chilled water outlet. An adjustable air supply device is provided between the adjacent air inlet sides of two sets of refrigeration units. Based on the chilled water outlet temperature detected by the temperature sensor, the adjustable air supply device automatically adjusts the air supply volume of the refrigeration unit to ensure that the chilled water outlet temperature of all refrigeration units is consistent.

[0006] Preferably, the adjustable air supply device includes an air supply chamber, at least one air supply motor disposed on the outer end face of the air supply chamber, an air supply hole on the wall corresponding to the air inlet side of the refrigeration unit, a movable air control plate disposed on the outside of the air supply hole, and a drive mechanism for driving the air control plate to move and change the size of the air supply hole.

[0007] Preferably, the air supply cavity is a wedge-shaped cavity that is narrow at the front end and wide at the rear end.

[0008] Preferably, the outer end face of the air supply cavity is provided with three variable frequency air supply motors.

[0009] Preferably, the driving mechanism is a lifting mechanism or a linkage mechanism.

[0010] Preferably, the refrigeration unit consists of six refrigeration units arranged in two rows.

[0011] Preferably, the cooling fan in the cooling unit faces upward, and the four sides of the cooling unit are air inlet surfaces.

[0012] The present invention provides a motor vehicle having the on-board liquid cooling source device provided by the present invention.

[0013] The present invention also provides a control method for an on-board liquid cooling source device, comprising the following steps:

[0014] All temperature sensors are assigned the same set value for the chilled water outlet temperature. When the unit is running, if the temperature sensor detects that the chilled water outlet temperature of the refrigeration unit is greater than the set value, the adjustable air supply device is automatically controlled to increase the air supply volume in order to reduce the chilled water outlet temperature of the refrigeration unit.

[0015] When the chilled water outlet temperature of a refrigeration unit reaches the set value, the operating state of that refrigeration unit remains unchanged; at the same time, the air volume of refrigeration units that have not reached the set value of chilled water outlet temperature is increased until the chilled water outlet temperature of all refrigeration units reaches the set value; the adjustment is stopped to ensure that the chilled water outlet temperature of all refrigeration units is the same and constant.

[0016] Preferably, the air volume is increased by automatically controlling the variable frequency fan motor to increase the air volume and / or by automatically controlling the movement of the air control plate to expand the area of ​​the air outlet.

[0017] The vehicle-mounted liquid cooling source device provided by this invention features a temperature sensor at the chilled water outlet of each refrigeration unit. An adjustable air supply device is installed between the adjacent air inlet sides of two refrigeration units. Based on the chilled water outlet temperature detected by the temperature sensor, the adjustable air supply device automatically increases the airflow to refrigeration units with outlet water temperatures exceeding a set value, ensuring that the outlet water temperature of all refrigeration units remains constant. In the limited space of a vehicle, the adjustable air supply device on the adjacent air inlet sides of two refrigeration units (the "air-grabbing sides") automatically improves the airflow and increases heat exchange. This allows for a modular structure of multiple refrigeration units, achieving high cooling capacity in a small space and improving the efficiency of the refrigeration system. This invention promotes the modular development of vehicle-mounted liquid cooling source device refrigeration units, making their operation more reliable and stable. Attached Figure Description

[0018] Figure 1 This is a perspective view of an embodiment of the vehicle-mounted liquid cooling source device of the present invention;

[0019] Figure 2 This is a top view of an embodiment of the vehicle-mounted liquid cooling source device of the present invention;

[0020] Figure 3 yes Figure 1 A magnified view of part A in the middle.

[0021] Among them: 1 is the temperature sensor, 2 is the vehicle frame of the vehicle-mounted liquid cooling source device, 3 is the refrigeration unit, 4 is the lifting device, 5 is the air control plate, 6 is the air supply cavity, 7 is the variable frequency air supply motor, 8 is the adjustable air supply device, 9 is the air supply hole, and 10 is the condenser fan. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this is not intended to limit the present invention.

[0023] like Figure 1 , Figure 2 The image shows an embodiment of an on-board liquid cooling source device provided by the present invention. This embodiment consists of six refrigeration units 3 mounted in two rows on a vehicle frame 2. Each refrigeration unit 3 includes a compressor, condenser, condenser fan, evaporator, solenoid valve, and throttling element, among other refrigeration components. The present invention also includes a liquid cooling source circulation module that exchanges heat with the evaporator and then supplies chilled water for cooling electronic equipment. In this embodiment, the condenser fan 10 of each refrigeration unit 3 faces upwards to dissipate heat, and the four sides of the refrigeration unit 3 are the air intake surfaces. Due to the limited space in the vehicle, the air intake conditions of each refrigeration unit 3 are inconsistent, resulting in airflow competition between the refrigeration units 3; that is, the air intake conditions vary. Figure 2As shown, there are adjacent air intake sides between the two sets of refrigeration units 3 arranged horizontally on the left and right sides. This is the typical "air-grabbing side" of the air intake of the refrigeration unit 3.

[0024] like Figure 1 , Figure 2 As shown, this invention provides a temperature sensor 1 at the outlet of the chilled water in each refrigeration unit 3, and an adjustable air supply device 8 is provided between the adjacent air inlet sides of two sets of refrigeration units 3, that is, the adjustable air supply device 8 is provided on the "air-grabbing side" of the air inlet between two adjacent refrigeration units 3. Based on the chilled water outlet temperature detected by the temperature sensor 1, the adjustable air supply device 8 can automatically adjust the air supply volume of the refrigeration unit 3 with an outlet water temperature greater than the set outlet water temperature, so that the outlet water temperature of all refrigeration units 3 is consistent.

[0025] like Figure 3 As shown, the adjustable air supply device 8 provided by the present invention includes an air supply cavity 6 and at least one air supply motor 7 disposed on the outer end face of the air supply cavity 6. Air supply holes 9 are provided on both side walls of the air supply cavity 6 corresponding to the air inlet side of the refrigeration unit 3. Movable air control plates 5 are provided on both outer sides of the air supply holes 9. The device also includes a driving mechanism that drives the air control plates 5 to move and change the area of ​​the air supply holes 9 on both side plates of the adjustable air supply device 8. In this embodiment, the driving mechanism is a lifting mechanism 4, but other driving devices can also be used, such as linkage mechanisms, as long as they can drive the air control plates 5 to move close to the side of the air supply cavity 6 to change the area of ​​the air supply holes 9, thereby achieving the purpose of adjusting the air supply volume. Three variable frequency air supply motors 7 are disposed on the upper and lower outer end face of the air supply cavity 6. The number of air supply motors 7 can be selected as needed, for example, two or four. The air supply cavity 6 adopts a wedge-shaped cavity structure that is narrow at the front end and wide at the rear end. The wedge-shaped adjustable air supply device 8 maximizes the use of the space between adjacent refrigeration units 3 and facilitates installation and disassembly, achieving two benefits at once. The temperature sensor 1, lifting mechanism 4, and air supply motor 7 of this invention are all electrically connected to the system controller and receive automatic control from the controller. Except for the adjustable air supply device 8 installed on the "air-grabbing side" between adjacent refrigeration units 3, the other three sides of the refrigeration unit 3 retain their original air intake surfaces.

[0026] The present invention also provides a motor vehicle having the on-board liquid cooling source device described in the present invention.

[0027] The control method for the vehicle-mounted liquid cooling source device provided by this invention includes the following steps (please refer to...). Figure 1 , Figure 3 ):

[0028] Before the unit starts operating, all temperature sensors 1 are assigned the same set value for the chilled water outlet temperature. When the unit starts operating, if temperature sensor 1 detects that the chilled water outlet temperature of its refrigeration unit 3 is higher than the set value, the controller automatically controls the variable frequency blower motor 7 to increase the airflow to that refrigeration unit 3 and automatically controls the movement of the air control plate 5 to expand the area of ​​the air outlet 9, thereby increasing the airflow to that refrigeration unit 3. Depending on the airflow requirements, the controller can also automatically control the variable frequency blower motor 7 to increase the airflow to that refrigeration unit 3, or automatically control the movement of the air control plate 5 to expand the area of ​​the air outlet 9, thereby increasing the airflow to that refrigeration unit 3 to lower the chilled water outlet temperature of that refrigeration unit 3. The airflow can be changed by frequency conversion of the variable frequency blower motor 7, or by turning the number of variable frequency blower motors 7 on or off.

[0029] When temperature sensor 1 detects that the chilled water outlet temperature of one of the refrigeration units 3 has reached the set value, the operating state of that refrigeration unit 3 remains unchanged, that is, the air supply volume is not increased further, and the chilled water outlet temperature of that refrigeration unit 3 is maintained at the same value as the set value. At the same time, the air supply volume of the remaining refrigeration units 3 that have not yet reached the set value of the chilled water outlet temperature continues to be increased until the chilled water outlet temperature of all refrigeration units 3 reaches the set value. The adjustable air supply device 8 stops adjusting the air supply to ensure that the chilled water outlet temperature of all refrigeration units 3 is the same and constant.

[0030] The adjustable air supply device 8 of this invention provides real-time dynamic air supply adjustment. Whenever the outlet temperature of the chilled water in a certain refrigeration unit 3 exceeds a set value, the controller automatically controls the adjustable air supply device 8 to increase the airflow to that refrigeration unit 3. This ensures that the output cooling capacity of refrigeration units 3 at different locations in the vehicle-mounted liquid cooling source device 3 is consistent, allowing for consistent cooling capacity matching in the modular design of multiple refrigeration units 3. By increasing or decreasing the number of refrigeration units 3 in the vehicle-mounted liquid cooling source device, vehicle-mounted liquid cooling source devices with different cooling capacities can be constructed, and the delivered cooling capacity is accurate and reliable. In a small vehicle space, adjustable air supply devices 8 are installed on adjacent sides of two refrigeration units to automatically improve the airflow and increase heat exchange. The use of a multi-unit modular structure enables the supply of large cooling capacity in a small space, improving the working efficiency of the refrigeration system. This invention promotes the modular development of vehicle-mounted liquid cooling source device refrigeration units, facilitating later maintenance and replacement. It also makes the operation of vehicle-mounted liquid cooling source device refrigeration units more reliable and stable.

[0031] The above description is merely an 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.

Claims

1. A vehicle-mounted liquid cooling source device, comprising multiple refrigeration units, characterized in that, Each refrigeration unit has a temperature sensor at its chilled water outlet. An adjustable air supply device is provided between the adjacent air inlet sides of two refrigeration units. Based on the chilled water outlet temperature detected by the temperature sensor, the adjustable air supply device automatically adjusts the air supply volume of the refrigeration unit to ensure that the chilled water outlet temperature of all refrigeration units is consistent. The adjustable air supply device includes an air supply chamber, at least one air supply motor disposed on the outer end face of the air supply chamber, an air supply hole on the wall corresponding to the air inlet side of the refrigeration unit, a movable air control plate on the outside of the air supply hole, and a drive mechanism for driving the air control plate to move and change the size of the air supply hole.

2. The vehicle-mounted liquid cooling source device as described in claim 1, characterized in that, The air supply cavity is a wedge-shaped cavity that is narrow at the front end and wide at the rear end.

3. The vehicle-mounted liquid cooling source device as described in claim 1, characterized in that, The outer end face of the air supply cavity is equipped with three variable frequency air supply motors.

4. The vehicle-mounted liquid cooling source device as described in claim 1, characterized in that, The driving mechanism is a lifting mechanism or a linkage mechanism.

5. The vehicle-mounted liquid cooling source device as described in claim 1, characterized in that, The refrigeration unit has six sets, arranged in two rows.

6. The vehicle-mounted liquid cooling source device as described in claim 1, characterized in that, The cooling fan in the refrigeration unit faces upwards, and the four sides of the refrigeration unit are air inlet surfaces.

7. A motor vehicle, characterized in that, It has an on-board liquid cooling source device as described in any one of claims 1 to 6.

8. A control method for an on-board liquid cooling source device as described in any one of claims 1 to 6, comprising the following steps: All temperature sensors are assigned the same set value for the chilled water outlet temperature. When the unit is running, if the temperature sensor detects that the chilled water outlet temperature of the refrigeration unit is greater than the set value, the adjustable air supply device is automatically controlled to increase the air supply volume in order to reduce the chilled water outlet temperature of the refrigeration unit. When the chilled water outlet temperature of one of the refrigeration units reaches the set value, the operating state of that refrigeration unit remains unchanged; at the same time, the air volume of the refrigeration units that have not reached the set value of chilled water outlet temperature is increased until the chilled water outlet temperature of all refrigeration units reaches the set value; the adjustment is stopped to ensure that the chilled water outlet temperature of all refrigeration units is the same and constant.

9. The control method for the vehicle-mounted liquid cooling source device as described in claim 8, characterized in that, The air volume is increased by automatically controlling the variable frequency fan motor and / or by automatically controlling the movement of the air control plate to expand the area of ​​the air outlet.

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