Cooling device of refrigerating system and refrigerating system comprising cooling device

Abstract

The utility model provides a cooling device of a refrigerating system and the refrigerating system comprising the cooling device. The refrigeration system comprises a driver and an evaporator. And the heat dissipation device is used for dissipating heat for the driver. The heat dissipation device comprises a liquid inlet pipeline used for being connected with the liquid inlet side of the evaporator, a liquid outlet pipeline used for being connected with the liquid outlet side of the evaporator, a heat exchanger and a flow dividing pipeline. Wherein the flow dividing pipeline comprises a flow dividing liquid inlet branch used for being connected with the liquid inlet side of the driver and a flow dividing liquid outlet branch used for being connected with the liquid outlet side of the driver, the liquid inlet side of the flow dividing liquid inlet branch is connected with the liquid inlet pipeline, and the liquid outlet side of the flow dividing liquid outlet branch is connected with the liquid outlet pipeline. And the heat exchanger is connected between the shunting liquid inlet branch and the shunting liquid outlet branch. According to the invention, filth blockage of a pipeline is not easily caused, condensation of components caused by too low temperature of the cooling liquid entering the driver can be prevented, and meanwhile, the influence on the refrigerating capacity of a refrigerating system is small.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation of a refrigeration system, and in particular to a heat dissipation device of a refrigeration system and a refrigeration system comprising the same. Background Art

[0002] The driver board of the refrigeration system is used to control the operation of the refrigeration system and is a key component of the refrigeration system. The driver board will generate a lot of heat during operation. If the heat cannot be dissipated in time and effectively, it will not only affect its performance, but may even cause damage to the equipment.

[0003] Existing heat dissipation methods include air cooling, refrigerant cooling and condensed water cooling. However, all of the above methods have many defects. The heat sink of the air-cooled method is installed on the side of the condensing air cavity, which increases the wind resistance on the air outlet side and affects the refrigeration of the refrigeration system. In the refrigerant cooling method, the temperature of the condensed refrigerant rises after passing through the refrigerant cooling plate, which will reduce the refrigeration capacity of the refrigeration system. In the condensed water cooling method, the condensed water on the condenser side is captured, filtered, and then circulated to the drive board for heat exchange using a water pump. However, the condensed water on the condenser side contains many impurities and sediments, which can easily cause the pipeline to become dirty and the heat dissipation capacity to decrease. In addition, if the temperature of the condensed water is too low, condensation will also form on the surface of the components. Condensation may not only cause short circuits in components, but also accelerate the aging of components, seriously affecting the performance and life of the driver. Utility Model Content

[0004] The present application provides a heat dissipation device for a refrigeration system and a refrigeration system including the same, which is not likely to cause dirty or blocked pipelines, can prevent condensation on components of a driver, and has little impact on the refrigeration system.

[0005] The present application provides a heat dissipation device for a refrigeration system, the refrigeration system comprising a driver and an evaporator, the heat dissipation device being used to dissipate heat for the driver, the heat dissipation device comprising:

[0006] A liquid inlet pipeline for connecting the liquid inlet side of the evaporator, a liquid outlet pipeline for connecting the liquid outlet side of the evaporator, a heat exchanger, and a diversion pipeline;

[0007] Wherein, the shunt pipeline includes a shunt liquid inlet branch for connecting to the liquid inlet side of the driver and a shunt liquid outlet branch for connecting to the liquid outlet side of the driver, the liquid inlet side of the shunt liquid inlet branch is connected to the liquid inlet pipeline, and the liquid outlet side of the shunt liquid outlet branch is connected to the liquid outlet pipeline;

[0008] The heat exchanger is connected between the split liquid inlet branch and the split liquid outlet branch.

[0009] Optionally, the flow diversion pipeline further includes a liquid outlet bypass, the liquid inlet side of the liquid outlet bypass is connected between the driver and the heat exchanger, and the liquid outlet side of the liquid outlet bypass is connected between the heat exchanger and the liquid outlet pipeline;

[0010] The heat dissipation device further comprises a first regulating valve, which is arranged in the liquid outlet bypass.

[0011] Optionally, the split liquid inlet branch includes a first liquid inlet branch and a second liquid inlet branch, the first liquid inlet branch is connected between the driver and the heat exchanger, and the second liquid inlet branch is connected between the heat exchanger and the liquid inlet pipeline;

[0012] The heat dissipation device also includes a controller, which is in communication connection with the first regulating valve and is used to adjust the opening of the first regulating valve according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch.

[0013] Optionally, the first regulating valve includes a proportional two-way valve.

[0014] Optionally, the split liquid outlet branch includes a first liquid outlet branch and a second liquid outlet branch, the first liquid outlet branch is connected between the driver and the heat exchanger, and the second liquid outlet branch is connected between the heat exchanger and the liquid outlet pipeline;

[0015] The heat dissipation device further includes a second regulating valve, which is arranged on the first liquid outlet branch or the second liquid outlet branch.

[0016] Optionally, the split liquid inlet branch includes a first liquid inlet branch and a second liquid inlet branch, the first liquid inlet branch is connected between the driver and the heat exchanger, and the second liquid inlet branch is connected between the heat exchanger and the liquid inlet pipeline;

[0017] The heat dissipation device also includes a second regulating valve and a controller, wherein the second regulating valve is arranged in the diverted liquid outlet branch; the controller is communicatively connected with the second regulating valve and is used to adjust the opening of the second regulating valve according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch.

[0018] Optionally, the second regulating valve includes a proportional two-way valve.

[0019] Optionally, the heat dissipation device also includes a refrigerant pump, which is arranged in the liquid inlet pipeline and is used to provide refrigerant to the liquid inlet pipeline.

[0020] Optionally, the evaporator includes a first evaporator and a second evaporator, the liquid inlet pipeline includes a first liquid inlet pipeline for connecting to a liquid inlet side of the first evaporator and a second liquid inlet pipeline for connecting to a liquid inlet side of the second evaporator, and the liquid outlet pipeline includes a first liquid outlet pipeline for connecting to a liquid outlet side of the first evaporator and a second liquid outlet pipeline for connecting to a liquid outlet side of the second evaporator;

[0021] The first liquid inlet pipeline and the second liquid inlet pipeline are both connected to the liquid inlet side of the split liquid inlet branch; the first liquid outlet pipeline and the second liquid outlet pipeline are both connected to the liquid outlet side of the split liquid outlet branch.

[0022] The present application also provides a refrigeration system, comprising: a driver, an evaporator and

[0023] In the heat dissipation device as described in any one of the above items, the liquid inlet pipeline of the heat dissipation device is connected to the liquid inlet side of the evaporator, and the liquid outlet pipeline of the heat dissipation device is connected to the liquid outlet side of the evaporator.

[0024] In some embodiments, the heat dissipation device includes: an inlet pipeline for connecting the inlet side of the evaporator, an outlet pipeline for connecting the outlet side of the evaporator, a heat exchanger, and a shunt pipeline; the shunt pipeline includes a shunt inlet branch for connecting the inlet side of the driver and a shunt outlet branch for connecting the outlet side of the driver, the inlet side of the shunt inlet branch is connected to the inlet pipeline, and the outlet side of the shunt outlet branch is connected to the outlet pipeline. Since the coolant on the inlet side of the evaporator is relatively clean, the coolant on the inlet side of the evaporator is shunt to the driver for cooling the driver, which is not easy to cause dirty pipe blockage; the heat exchanger is connected between the shunt inlet branch and the shunt outlet branch, and heat exchange is performed on the inlet and outlet of the driver, which can prevent the temperature of the coolant entering the driver from being too low, causing condensation of components and affecting the performance of the driver. The outlet of the driver has its temperature reduced after heat exchange through the heat exchanger, and flows to the outlet pipeline to continue to be used by the refrigeration system, which can reduce the impact on the refrigeration capacity of the refrigeration system.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] Figure 1 Shown is a schematic structural diagram of an embodiment of a refrigeration system of the present application.

[0028] Figure 2Shown is a structural schematic diagram of another embodiment of the refrigeration system of the present application. DETAILED DESCRIPTION

[0029] The present application provides a heat dissipation device of a refrigeration system and a refrigeration system including the same. The heat dissipation device of a refrigeration system of the present application and the refrigeration system including the same are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0030] Figure 1 Shown is a schematic structural diagram of an embodiment of a refrigeration system 10 of the present application.

[0031] The refrigeration system 10 is a device or system for producing a cooling effect, and is generally used in various scenarios requiring cooling, such as air conditioning systems, cold storages, refrigerators, cooling towers, etc. The refrigeration system 10 includes a driver 11 and an evaporator 12. The driver 11 includes a driver board. The driver board includes a circuit board. In some embodiments, the driver 11 receives instructions from a system controller and controls the operation of corresponding components. The driver 11 can also monitor the status of corresponding components to protect them from damage such as overload and overheating.

[0032] The evaporator 12 is used to absorb heat. In the evaporator 12, the refrigerant changes from a liquid state to a gaseous state (i.e. evaporates), and this process requires absorbing surrounding heat. Therefore, the air or material around the evaporator 12 is cooled, thereby reducing the temperature.

[0033] The refrigeration system 10 also includes a heat sink 20 provided in the present application. The heat sink 20 is used to dissipate heat for the driver 11, to ensure that the driver 11 does not overheat, to ensure that the driver 11 works normally, and to extend the service life of the driver 11. Figure 1 As shown, the heat dissipation device 20 includes: a liquid inlet pipeline 21, a liquid outlet pipeline 22, a heat exchanger 23 and a diversion pipeline 24.

[0034] The liquid inlet pipeline 21 is used to connect the liquid inlet side of the evaporator 12. The liquid outlet pipeline 22 is used to connect the liquid outlet side of the evaporator 12. The shunt pipeline 24 includes a shunt liquid inlet branch 241 for connecting the liquid inlet side of the driver 11 and a shunt liquid outlet branch 242 for connecting the liquid outlet side of the driver 11. The liquid inlet side of the shunt liquid inlet branch 241 is connected to the liquid inlet pipeline 21. The liquid outlet side of the shunt liquid outlet branch 242 is connected to the liquid outlet pipeline 22. The heat exchanger 23 is connected between the shunt liquid inlet branch 241 and the shunt liquid outlet branch 242.

[0035] The liquid inlet pipeline 21 is connected to the liquid inlet side of the evaporator 12, and the liquid inlet side of the shunt liquid inlet branch 241 is connected to the liquid inlet pipeline 21, so that the liquid inlet side of the shunt liquid inlet branch 241 is connected to the liquid inlet side of the evaporator 12, and the shunt liquid inlet branch 241 can shunt the coolant on the liquid inlet side of the evaporator 12 to the driver 11. Similarly, the liquid outlet of the driver 11 is connected to the liquid outlet side of the evaporator 12 through the shunt liquid outlet branch 242, and the coolant flowing through the driver 11 flows back to the liquid outlet side of the evaporator 12. Since the coolant on the liquid inlet side of the evaporator is relatively clean, the coolant on the liquid inlet side of the evaporator is shunt to the driver for cooling the driver, which is not easy to cause dirty pipe blockage.

[0036] The heat exchanger 23 performs heat exchange on the coolant flowing through it. The heat exchanger 23 performs heat exchange between the coolant flowing into the driver 11 and the coolant flowing out of the driver 11, so that the temperature of the coolant entering the driver 11 approaches the ambient temperature of the driver 11, which can prevent the temperature of the coolant flowing into the driver 11 from being too low, prevent condensation of the components inside the driver 11, and avoid affecting the performance of the driver. The outlet liquid of the driver 11 passes through the heat exchanger 23, and the temperature drops, and flows to the outlet pipe 22 to continue to be used by the refrigeration system 10, reducing the impact on the refrigeration capacity of the refrigeration system 10.

[0037] The heat dissipation device 20 of the present application is connected to the evaporator 12 of the refrigeration system 10 through the liquid inlet pipe 21 and the liquid outlet pipe 22. When the heat dissipation device 20 needs to be replaced, it only needs to be disconnected from the evaporator 12, which is convenient for installation, maintenance and replacement.

[0038] In some embodiments, the coolant includes water or ethylene glycol. Water has good chemical stability and is not easy to react with other substances. It is suitable as a cooling medium for a variety of equipment and systems. Water is easy to handle and pump, has a large specific heat capacity, and compared with other substances of the same mass of water, water releases more heat when the same temperature is reduced. It is also relatively cheap and easy to obtain. Ethylene glycol has a low freezing point and is not easy to freeze in cold weather, thereby protecting equipment and systems from damage. Ethylene glycol has a high boiling point and can maintain stable performance in high temperature environments. It is suitable for cooling various high-temperature equipment and systems. Ethylene glycol is less corrosive to metals and can extend the service life of equipment and systems. Ethylene glycol shows good stability when the temperature changes, is not easy to produce precipitation or decomposition, and helps to keep the cooling system clean and efficient.

[0039] Figure 2 Shown is a schematic structural diagram of another embodiment of the refrigeration system 10 of the present application.

[0040] In some embodiments, the evaporator 12 includes a first evaporator 121 and a second evaporator 122. The liquid inlet pipeline 21 includes a first liquid inlet pipeline 211 for connecting the liquid inlet side of the first evaporator 121 and a second liquid inlet pipeline 212 for connecting the liquid inlet side of the second evaporator 122. The liquid outlet pipeline 22 includes a first liquid outlet pipeline 221 for connecting the liquid outlet side of the first evaporator 121 and a second liquid outlet pipeline 222 for connecting the liquid outlet side of the second evaporator 122. The first liquid inlet pipeline 211 and the second liquid inlet pipeline 212 are both connected to the liquid inlet side of the shunt liquid inlet branch 241. The first liquid outlet pipeline 221 and the second liquid outlet pipeline 222 are both connected to the liquid outlet side of the shunt liquid outlet branch 242.

[0041] The coolant on the liquid inlet side of the first evaporator 121 and the second evaporator 122 is shunted to the shunting liquid inlet branch 241, thereby providing coolant for the driver 11. The first evaporator 121 and the second evaporator 122 can provide more coolant for the driver 11, so that the heat dissipation device 20 can adapt to high temperature conditions and improve the heat dissipation capacity. In actual applications, only the coolant on the liquid inlet side of the first evaporator 121 or the second evaporator 122 can be controlled to be shunted to the shunting liquid inlet branch 241 as needed.

[0042] In some embodiments, the shunt pipeline 24 further includes a liquid outlet bypass 243. The liquid inlet side of the liquid outlet bypass 243 is connected between the driver 11 and the heat exchanger 23. The liquid outlet of the driver 11 is partially shunted to the liquid outlet bypass 243, and part of it enters the heat exchanger 23. The liquid outlet side of the liquid outlet bypass 243 is connected between the heat exchanger 23 and the liquid outlet pipeline 22. The liquid outlet of the liquid outlet bypass 243 flows into the liquid outlet pipeline 22. The heat dissipation device 20 further includes a first regulating valve 25, which is disposed in the liquid outlet bypass 243.

[0043] The first regulating valve 25 is used to adjust the flow of the liquid outlet bypass 243, thereby adjusting the flow of the liquid outlet side of the driver 11, so that the heat dissipation capacity of the driver 20 can be adjusted. When the heat dissipation capacity needs to be improved, the flow of the liquid outlet bypass 243 can be reduced to increase the flow of the coolant entering the driver 11. When the heat dissipation capacity needs to be reduced, the flow of the liquid outlet bypass 243 can be increased to reduce the flow of the coolant entering the driver 11.

[0044] In some embodiments, the first regulating valve 25 includes a proportional two-way valve.

[0045] The proportional two-way valve can control the flow of coolant by receiving an external control signal. By controlling the solenoid of the proportional two-way valve, the position of the valve core is controlled, thereby adjusting the flow of coolant.

[0046] In some embodiments, the split liquid inlet branch 241 includes a first liquid inlet branch 2411 and a second liquid inlet branch 2412. The first liquid inlet branch 2411 is connected between the driver 11 and the heat exchanger 23. The second liquid inlet branch 2412 is connected between the heat exchanger 23 and the liquid inlet pipeline 21. The heat dissipation device 20 also includes a controller 28, which is in communication with the first regulating valve 25 and is used to adjust the opening of the first regulating valve 25 according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411.

[0047] The inlet liquid of the inlet pipeline 21 enters the heat exchanger 23 through the second inlet branch 2412. The outlet liquid of the heat exchanger 23 enters the driver 11 through the first inlet branch 2411.

[0048] The controller 28 includes a first control port T1, which is in communication connection with the first regulating valve 25. The controller 28 collects the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411, and adjusts the opening of the first regulating valve 25 according to the difference between the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411, so that the temperature of the refrigerant in the first liquid inlet branch 2411 is equal to the ambient temperature, thereby ensuring that the temperature of the refrigerant entering the driver 11 is equal to the ambient temperature, and will not cause condensation on the internal components of the driver 11, affecting the performance of the driver 11. In some embodiments, the controller 28 adjusts the opening of the first regulating valve 25 by a PID control method.

[0049] In some embodiments, the split liquid outlet branch 242 includes a first liquid outlet branch 2421 and a second liquid outlet branch 2422. The first liquid outlet branch 2421 is connected between the driver 11 and the heat exchanger 23. The second liquid outlet branch 2422 is connected between the heat exchanger 23 and the liquid outlet pipeline 22. The heat dissipation device 20 also includes a second regulating valve 26, which is disposed in the first liquid outlet branch 2421 or the second liquid outlet branch 2422.

[0050] The liquid out of the driver 11 enters the heat exchanger 23 through the first liquid outlet branch 2421. The liquid out of the heat exchanger 23 enters the liquid outlet pipeline 22 through the second liquid outlet branch 2422. The second regulating valve 26 is used to control the flow rate of the cooling liquid in the first liquid outlet branch 2421 or the second liquid outlet branch 2422. Figure 2 In the illustrated embodiment, the second regulating valve 26 is disposed on the second liquid outlet branch 2422, and is used to regulate the flow of the coolant in the second liquid outlet branch 2422, thereby regulating the flow on the liquid outlet side of the driver 11 and regulating the heat dissipation capacity of the driver 20. When the heat dissipation capacity needs to be improved, the flow of the second liquid outlet branch 2422 can be reduced to increase the flow of the coolant entering the driver 11. When the heat dissipation capacity needs to be reduced, the flow of the second liquid outlet branch 2422 can be increased to reduce the flow of the coolant entering the driver 11.

[0051] In some embodiments, the second regulating valve 26 is disposed in the split liquid outlet branch 242. The controller 28 is in communication with the second regulating valve 26 and is used to adjust the opening of the second regulating valve 26 according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411.

[0052] The controller 28 includes a second control port T2, which is in communication connection with the second regulating valve 26. The controller 28 collects the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411, and adjusts the opening of the second regulating valve 26 according to the difference between the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411, so that the temperature of the refrigerant in the first liquid inlet branch 2411 is equal to the ambient temperature, thereby ensuring that the temperature of the refrigerant entering the driver 11 is equal to the ambient temperature, and will not cause condensation on the internal components of the driver 11, affecting the performance of the driver 11. In some embodiments, the controller 28 adjusts the opening of the second regulating valve 26 by a PID control method.

[0053] In some embodiments, the controller 28 is used to adjust the opening of the first regulating valve 25 and the second regulating valve 26 according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch 2411. By adjusting the opening of the first regulating valve 25 and the second regulating valve 26 to adjust the temperature and flow of the coolant entering the driver 11, the heat dissipation capacity of the heat dissipation device 20 can be adjusted more finely, so that the heat dissipation device 20 can meet more diverse scene requirements.

[0054] In some embodiments, the second regulating valve 26 includes a proportional two-way valve.

[0055] In some embodiments, the heat dissipation device 20 further includes a refrigerant pump 27, which is disposed in the liquid inlet pipeline 21 and is used to provide refrigerant to the liquid inlet pipeline 21. The flow rate of the refrigerant provided by the refrigerant pump 27 can be adjusted as needed. When the coolant on the liquid inlet side of the evaporator 12 is insufficient, the refrigerant pump 27 can provide coolant for the driver 11 to dissipate heat for the driver 11.

[0056] In some embodiments, the controller 28 is in communication with the refrigerant pump 27 to control the operation of the refrigerant pump 27. When the temperature of the driver 11 is too high and needs to be cooled, the controller 28 controls the refrigerant pump 27 to provide refrigerant, and the refrigerant enters the driver 11 through the liquid inlet pipe 21 to dissipate heat for the driver 11.

Claims

1. A heat dissipation device for a refrigeration system, characterized in that: The refrigeration system includes a driver and an evaporator. The heat sink is used to dissipate heat for the driver. The heat sink includes: A liquid inlet pipeline for connecting the liquid inlet side of the evaporator, a liquid outlet pipeline for connecting the liquid outlet side of the evaporator, a heat exchanger, and a diversion pipeline; Wherein, the shunt pipeline includes a shunt liquid inlet branch for connecting to the liquid inlet side of the driver and a shunt liquid outlet branch for connecting to the liquid outlet side of the driver, the liquid inlet side of the shunt liquid inlet branch is connected to the liquid inlet pipeline, and the liquid outlet side of the shunt liquid outlet branch is connected to the liquid outlet pipeline; The heat exchanger is connected between the split liquid inlet branch and the split liquid outlet branch.

2. The heat dissipation device according to claim 1, characterized in that: The shunt pipeline further includes a liquid outlet bypass, the liquid inlet side of the liquid outlet bypass is connected between the driver and the heat exchanger, and the liquid outlet side of the liquid outlet bypass is connected between the heat exchanger and the liquid outlet pipeline; The heat dissipation device further comprises a first regulating valve, which is arranged in the liquid outlet bypass.

3. The heat dissipation device according to claim 2, characterized in that: The split liquid inlet branch includes a first liquid inlet branch and a second liquid inlet branch, the first liquid inlet branch is connected between the driver and the heat exchanger, and the second liquid inlet branch is connected between the heat exchanger and the liquid inlet pipeline; The heat dissipation device also includes a controller, which is in communication connection with the first regulating valve and is used to adjust the opening of the first regulating valve according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch.

4. The heat dissipation device according to claim 2, characterized in that: The first regulating valve comprises a proportional two-way valve.

5. The heat dissipation device according to claim 1, characterized in that: The split liquid outlet branch includes a first liquid outlet branch and a second liquid outlet branch, the first liquid outlet branch is connected between the driver and the heat exchanger, and the second liquid outlet branch is connected between the heat exchanger and the liquid outlet pipeline; The heat dissipation device further includes a second regulating valve, which is arranged on the first liquid outlet branch or the second liquid outlet branch.

6. The heat dissipation device according to claim 1, characterized in that: The split liquid inlet branch includes a first liquid inlet branch and a second liquid inlet branch, the first liquid inlet branch is connected between the driver and the heat exchanger, and the second liquid inlet branch is connected between the heat exchanger and the liquid inlet pipeline; The heat dissipation device also includes a second regulating valve and a controller, wherein the second regulating valve is arranged in the diverted liquid outlet branch; the controller is communicatively connected with the second regulating valve and is used to adjust the opening of the second regulating valve according to the ambient temperature and the temperature of the refrigerant in the first liquid inlet branch.

7. The heat dissipation device according to claim 5 or 6, characterized in that: The second regulating valve includes a proportional two-way valve.

8. The heat dissipation device according to claim 1, characterized in that: The heat dissipation device also includes a refrigerant pump, which is arranged on the liquid inlet pipeline and is used to provide refrigerant to the liquid inlet pipeline.

9. The heat dissipation device according to claim 1, characterized in that: The evaporator comprises a first evaporator and a second evaporator, the liquid inlet pipeline comprises a first liquid inlet pipeline for connecting the liquid inlet side of the first evaporator and a second liquid inlet pipeline for connecting the liquid inlet side of the second evaporator, and the liquid outlet pipeline comprises a first liquid outlet pipeline for connecting the liquid outlet side of the first evaporator and a second liquid outlet pipeline for connecting the liquid outlet side of the second evaporator; The first liquid inlet pipeline and the second liquid inlet pipeline are both connected to the liquid inlet side of the split liquid inlet branch; the first liquid outlet pipeline and the second liquid outlet pipeline are both connected to the liquid outlet side of the split liquid outlet branch.

10. A refrigeration system, characterized in that: include: Driver, evaporator and The heat dissipation device according to any one of claims 1 to 9, wherein the liquid inlet pipeline of the heat dissipation device is connected to the liquid inlet side of the evaporator, and the liquid outlet pipeline of the heat dissipation device is connected to the liquid outlet side of the evaporator.

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