Refrigeration system

Abstract

The refrigerating system comprises a shell, a first plate heat exchanger, a second plate heat exchanger, an inner cooling circulation system, an outer cooling circulation system and a control device, the first plate heat exchanger, the second plate heat exchanger, the inner cooling circulation system, the outer cooling circulation system and the control device are installed in the shell, the outer cooling circulation system comprises an air cooling unit and a fluorine cooling unit, and the air cooling unit exchanges heat with the inner cooling circulation system through the first plate heat exchanger; the fluorine cooling unit exchanges heat with the inner cooling circulation system through the second plate heat exchanger, the control device is electrically connected to the inner cooling circulation system, the air cooling unit and the fluorine cooling unit, and the control device is used for controlling starting and stopping of the inner cooling circulation system, the air cooling unit and the fluorine cooling unit. Therefore, the inner cooling circulation system and the outer cooling circulation system are integrated in the same shell, the air cooling unit and the fluorine cooling unit share the same inner cooling circulation system, and the inner cooling circulation system, the air cooling unit and the fluorine cooling unit share the same plate heat exchanger. Therefore, the heat dissipation requirement can be met, and meanwhile the occupied area is reduced.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a refrigeration system. Background Art

[0002] With the progress and development of industrial equipment, various types of industrial equipment have higher and higher requirements for cooling and heat dissipation of refrigeration systems. Refrigeration systems are usually divided into two categories: internal cooling systems and external cooling systems. Commonly used equipment for external cooling systems includes refrigeration units, cooling towers, and air coolers. Due to the large demand for water resources for cooling towers, air coolers and refrigeration units are often used in parallel in areas with scarce water resources to improve the overall energy efficiency of external cooling systems. However, this refrigeration method of connecting multiple devices in parallel requires a large area and is not suitable for scenarios with high heat dissipation requirements but limited space. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the present application provides a refrigeration system that can reduce the floor space while meeting the heat dissipation requirements.

[0004] To achieve the above-mentioned purpose, the present application discloses a refrigeration system, comprising: a shell and a first plate heat exchanger, a second plate heat exchanger, an internal cooling circulation system, an external cooling circulation system and a control device installed in the shell, the external cooling circulation system comprising an air cooling unit and a fluorine cooling unit, the air cooling unit and the internal cooling circulation system perform heat exchange through the first plate heat exchanger, the fluorine cooling unit and the internal cooling circulation system perform heat exchange through the second plate heat exchanger, the control device is electrically connected to the internal cooling circulation system, the air cooling unit and the fluorine cooling unit, respectively, and the control device is used to control the start and stop of the internal cooling circulation system, the air cooling unit and the fluorine cooling unit.

[0005] As an optional implementation, in an embodiment of the present application, the air cooling unit includes a first circulation pump and a first tube-fin heat exchanger, and the first circulation pump, the first tube-fin heat exchanger and the first plate heat exchanger are respectively connected to each other by pipelines. The fluoro cooling unit includes a compressor, an oil separator, a second tube-fin heat exchanger, a liquid storage tank and an expansion valve connected in sequence by pipelines, and the second plate heat exchanger is connected to the compressor and the expansion valve by a pipeline.

[0006] As an optional implementation, in the embodiment of the present application, the air cooling unit further includes a first fan, which is installed in the housing and arranged corresponding to the first tube-fin heat exchanger; and / or,

[0007] The fluorine cooling unit also includes a second fan, which is installed on the shell and arranged corresponding to the second tube-fin heat exchanger.

[0008] As an optional embodiment, in an embodiment of the present application, the internal cooling circulation system includes an inlet pipe, an outlet pipe and a second circulation pump, one end of the second circulation pump is connected to the inlet pipe, the other end of the second circulation pump is connected to the inlet of the first plate heat exchanger or the second plate heat exchanger, the outlet pipe is connected to the outlet of the first plate heat exchanger or the second plate heat exchanger, and the inlet pipe and the outlet pipe extend outside the shell.

[0009] As an optional implementation, in an embodiment of the present application, the control device includes a PLC controller and a temperature sensor electrically connected to the PLC controller, the temperature sensor is used to detect the ambient temperature and transmit the temperature signal to the PLC controller, the PLC controller is electrically connected to the internal cooling circulation system, the air cooling unit and the fluorine cooling unit, and the PLC controller is used to control the start and stop of the internal cooling circulation system, the air cooling unit and the fluorine cooling unit according to the temperature signal.

[0010] As an optional implementation, in an embodiment of the present application, the control device also includes a smart meter electrically connected to the PLC controller, the smart meter is used to detect the power consumption of the user equipment and transmit it to the PLC controller, and the PLC controller is also used to control the start and stop of the internal cooling circulation system, the air cooling unit and the fluorine cooling unit according to the power consumption of the user equipment.

[0011] As an optional implementation, in an embodiment of the present application, the operating mode of the refrigeration system includes a full-load operating mode and a low-load operating mode, wherein in the full-load operating mode, the internal cooling circulation system, the air cooling unit and the fluorine cooling unit operate simultaneously, and in the low-load operating mode, the internal cooling circulation system and the air cooling unit operate simultaneously.

[0012] As an optional implementation, in an embodiment of the present application, the operating mode of the refrigeration system also includes a high-load operating mode. In the high-load operating mode, the internal cooling circulation system, the air cooling unit and the fluorine cooling unit operate simultaneously, and the operating frequency of the equipment in the air cooling unit and the fluorine cooling unit in the high-load operating mode is lower than the equipment movement frequency in the full-load operating mode.

[0013] As an optional implementation, in an embodiment of the present application, there are multiple refrigeration systems, and the multiple refrigeration systems are arranged in parallel.

[0014] As an optional implementation, in the embodiment of the present application, in the full-load operation mode, the startup priority of the fluorine cooling unit is higher than the startup priority of the air cooling unit, so that in the full-load operation mode, multiple fluorine cooling units are started and multiple air cooling units are started or shut down.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] A refrigeration system provided in an embodiment of the present application is provided, wherein the refrigeration system includes an air cooling unit and a fluorine cooling unit of an internal cooling circulation system and an external cooling circulation system, so as to realize multiple refrigeration modes in parallel, so that the refrigeration system can have an operating state in which multiple refrigeration modes are used separately or in a superimposed manner, so as to improve the cooling and heat dissipation effect of the refrigeration system, thereby meeting application scenarios with high heat dissipation requirements. At the same time, by arranging the first plate heat exchanger, the second plate heat exchanger, the internal cooling circulation system, the external cooling circulation system and the control device to be installed in the shell, so that the internal cooling circulation system and the external cooling circulation system are integrated in the same shell, and by arranging the air cooling unit and the internal cooling circulation system to perform heat exchange through the first plate heat exchanger, the fluorine cooling unit and the internal cooling circulation system to perform heat exchange through the second plate heat exchanger, so that the air cooling unit and the fluorine cooling unit share the same internal cooling circulation system, and the internal cooling circulation system shares a plate heat exchanger with the air cooling unit and the fluorine cooling unit respectively, so as to meet the heat dissipation requirements while improving the structural reuse rate and reducing the repeated parts in the refrigeration equipment, thereby helping to reduce the volume of the refrigeration system and reduce the floor space of the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the structure of the refrigeration system disclosed in the embodiment of the present application;

[0018] Figure 2 It is a front view of the refrigeration system disclosed in the embodiment of the present application in a state without a housing;

[0019] Figure 3 is a rear view of the refrigeration system disclosed in the embodiment of the present application in a state without a housing;

[0020] Figure 4 is a top view of the refrigeration system disclosed in the embodiment of the present application in a state without a housing;

[0021] Figure 5 is an operation flow chart of the air cooling unit disclosed in the embodiment of the present application;

[0022] Figure 6 is an operation flow chart of the fluorine cooling system disclosed in the embodiment of the present application;

[0023] Figure 7 is an operation flow chart of the internal cooling circulation system disclosed in the embodiment of the present application;

[0024] Figure 8 is a schematic diagram of electrical connections of a control device disclosed in an embodiment of the present application;

[0025] Fig. 9 It is a schematic diagram of multiple refrigeration systems connected in parallel according to an embodiment of the present application.

[0026] Reference numerals:

[0027] 100. Refrigeration system; 10. Shell; 20. First plate heat exchanger; 30. Second plate heat exchanger; 40. Internal cooling circulation system; 41. Inlet pipe; 42. Outlet pipe; 43. Second circulation pump; 50. External cooling circulation system; 51. Air cooling unit; 511. First circulation pump; 512. First tube-fin heat exchanger; 513. First fan; 52. Fluorine cooling unit; 521. Compressor; 522. Oil separator; 523. Second tube-fin heat exchanger; 524. Liquid storage tank; 525. Expansion valve; 526. Second fan; 60. Control device; 61. PLC controller; 62. Temperature sensor; 63. Smart meter. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0029] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0032] The technical solution of the present application will be further described below in conjunction with embodiments and drawings.

[0033] Please also read Figures 1 to 4 The present invention provides a refrigeration system 100, including a housing 10 and a first plate heat exchanger 20, a second plate heat exchanger 30, an internal cooling circulation system 40, an external cooling circulation system 50 and a control device 60 (see Figure 8 ), the external cooling circulation system 50 includes an air cooling unit 51 and a fluorine cooling unit 52, the air cooling unit 51 and the internal cooling circulation system 40 perform heat exchange through the first plate heat exchanger 20, the fluorine cooling unit 52 and the internal cooling circulation system 40 perform heat exchange through the second plate heat exchanger 30, the control device 60 is electrically connected to the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52, respectively, and the control device 60 is used to control the start and stop of the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52.

[0034] In this way, by setting up the refrigeration system 100 including the air cooling unit 51 and the fluorine cooling unit 52 of the internal cooling circulation system 40 and the external cooling circulation system 50, multiple refrigeration methods can be connected in parallel, so that the refrigeration system 100 can have an operating state in which multiple refrigeration methods are used separately or in combination, which is beneficial to improve the cooling and heat dissipation effect of the refrigeration system 100, thereby meeting application scenarios with high heat dissipation requirements. At the same time, the first plate heat exchanger 20, the second plate heat exchanger 30, the internal cooling circulation system 40, the external cooling circulation system 50 and the control device 60 are all installed in the shell 10, so that the internal cooling circulation system 40 and the external cooling circulation system 50 are integrated in the same shell 10, and the air cooling unit 51 is provided to perform heat exchange with the internal cooling circulation system 40 through the first plate heat exchanger 20, and the fluorine cooling unit 52 is provided to perform heat exchange with the internal cooling circulation system 40 through the second plate heat exchanger 30, so that the air cooling unit 51 and the fluorine cooling unit 52 share the same internal cooling circulation system 40, and the internal cooling circulation system 40 shares a plate heat exchanger with the air cooling unit 51 and the fluorine cooling unit 52 respectively, so as to improve the structural reuse rate and reduce the repeated parts in the refrigeration equipment while meeting the heat dissipation requirements, thereby helping to reduce the volume of the refrigeration system 100 and reduce the footprint of the refrigeration system 100.

[0035] Please combine Figure 5 In some embodiments, the internal cooling circulation system 40 includes an inlet pipe 41, an outlet pipe 42 and a second circulation pump 43, one end of the second circulation pump 43 is connected to the inlet pipe 41, the other end of the second circulation pump 43 is connected to the inlet of the first plate heat exchanger 20 or the second plate heat exchanger 30, the outlet pipe 42 is connected to the outlet of the first plate heat exchanger 20 or the second plate heat exchanger 30, and the inlet pipe 41 and the outlet pipe 42 extend to the outside of the shell 10.

[0036] In this way, the high-temperature medium carrying the heat dissipated by the user equipment during operation enters the internal cooling circulation system 40 through the inlet pipe 41 under the drive of the second circulation pump 43, and exchanges heat with the medium of the external cooling circulation system 50 in the first plate heat exchanger 20 or the second plate heat exchanger 30 to cool the high-temperature medium to form a low-temperature medium. The low-temperature medium is output through the outlet pipe 42 and returns to the user equipment, thereby completing the heat dissipation of the user equipment.

[0037] Optionally, the diameter of the pipe used in the internal cooling circulation system 40 may be 30 mm-100 mm, for example, 50 mm, 60 mm or 80 mm.

[0038] Please combine Figure 2 , Figure 4 , Figure 6 as well as Figure 7 In some embodiments, the air cooling unit 51 includes a first circulation pump 511 and a first tube-fin heat exchanger 512. The first circulation pump 511, the first tube-fin heat exchanger 512 and the first plate heat exchanger 20 are connected to each other through pipelines. The fluorine cooling unit 52 includes a compressor 521, an oil separator 522, a second tube-fin heat exchanger 523, a liquid storage tank 524 and an expansion valve 525 connected in sequence by pipelines. The second plate heat exchanger 30 is connected to the compressor 521 and the expansion valve 525 by pipeline.

[0039] In this way, the first circulation pump 511 provides driving force for the medium of the air cooling unit 51, so that the medium of the air cooling unit 51 absorbs heat and heats up after heat exchange with the internal cooling circulation unit through the first plate heat exchanger 20, and then exchanges heat with the external air through the first tube-fin heat exchanger 512 to cool down, and then returns to the first plate heat exchanger 20 for the next cycle of heat exchange, thereby realizing the recycling of the heat exchange medium and reducing resource waste. The compressor 521 drives the medium of the fluorine cooling system to provide driving force, so that the medium of the fluorine cooling system exchanges heat with the internal cooling circulation system 40 in the second plate heat exchanger 30 and then enters the oil separator 522. The oil separator 522 separates the oil and refrigerant of the medium at the outlet of the compressor 521 to prevent the oil from entering the second tube-fin heat exchanger 523, thereby ensuring the heat exchange capacity of the second tube-fin heat exchanger 523. The refrigerant exchanges heat with the external air in the second tube-fin heat exchanger 523, cools down and condenses, and then collects the condensate through the liquid storage tank 524 in turn, evaporates the liquid through the expansion valve 525 to form a gas state, and finally enters the second plate heat exchanger 30 for the next cycle of heat exchange. It can be seen that the air cooling unit 51 and the fluorine cooling unit 52 respectively exchange heat with the air through two tube-fin heat exchangers, which can improve the heat dissipation efficiency of the external cooling circulation system 50 and meet the conditions that the air cooling unit 51 and the fluorine cooling unit 52 can operate simultaneously, thereby helping to improve the heat dissipation effect of the refrigeration system 100 and meet the high heat dissipation requirements of users.

[0040] Optionally, the air cooling unit 51 further includes a first fan 513, which is mounted on the housing 10 and arranged corresponding to the first tube-fin heat exchanger 512. This can speed up the air flow rate outside the first tube-fin heat exchanger 512, thereby improving the heat dissipation efficiency of the first tube-fin heat exchanger 512, and further improving the heat dissipation efficiency of the air cooling unit 51.

[0041] Optionally, the fluorine cooling unit 52 further includes a second fan 526, which is mounted on the housing 10 and arranged corresponding to the second tube-fin heat exchanger 523. This can speed up the air flow rate outside the second tube-fin heat exchanger 523, thereby improving the heat dissipation efficiency of the second tube-fin heat exchanger 523, and further improving the heat dissipation efficiency of the fluorine cooling unit 52.

[0042] Optionally, the first tube-fin heat exchanger 512 and the second tube-fin heat exchanger 523 may be any type of V-shaped, flat-plate or W-shaped tube-fin heat exchanger, etc., which may be specifically configured according to actual needs and is not limited here.

[0043] Optionally, the material of the first tube-fin heat exchanger 512 may be any one of stainless steel, carbon steel or copper, etc., and may be specifically set according to actual needs and is not limited here.

[0044] Preferably, the first tube-fin heat exchanger 512 may be made of stainless steel, and the second tube-fin heat exchanger 523 may be made of copper.

[0045] Optionally, the tube diameters of the first tube-fin heat exchanger 512 and the second tube-fin heat exchanger 523 may be 5 mm-15 mm, for example, 8 mm, 10 mm or 12 mm.

[0046] Optionally, the diameter of the pipe in the air cooling unit 51 may be 15 mm-45 mm, such as 20 mm, 25 mm or 30 mm, etc. The diameter of the pipe in the fluorine cooling unit 52 may be 10 mm-30 mm, such as 16 mm, 20 mm or 25 mm, etc.

[0047] Optionally, the compressor 521 may be a vertical scroll compressor 521 , the first circulation pump 511 may be a vertical circulation pump, and the second circulation pump 43 may be a horizontal circulation pump.

[0048] Please combine Figure 8 In some embodiments, the control device 60 includes a PLC controller and a temperature sensor 62 electrically connected to the PLC controller, the temperature sensor 62 is used to detect the ambient temperature and transmit the temperature signal to the PLC controller, the PLC controller is electrically connected to the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52, the PLC controller is used to control the start and stop of the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 according to the temperature signal.

[0049] In this way, the operation of the PLC controller is controlled according to the ambient temperature to control the start and stop of one or more of the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52, thereby adjusting the operation mode of the refrigeration system 100 so that the refrigeration system 100 can adapt to different heat dissipation requirements, thereby improving the flexibility of the refrigeration system 100.

[0050] Optionally, the control device 60 also includes a smart meter 63 electrically connected to the PLC controller, which is used to detect the power consumption of the user equipment and transmit it to the PLC controller. The PLC controller is also used to control the start and stop of the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 according to the power consumption of the user equipment.

[0051] In this way, the power consumption of the user equipment is monitored by the smart meter 63 to control the operation of the PLC controller, so as to control the start and stop of one or more of the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52, so that the power consumption of the user equipment and the ambient temperature form two sets of control factors of the refrigeration system 100, so as to facilitate the interlocking of detection data and avoid the situation where the refrigeration system 100 cannot meet the heat dissipation requirements of the user equipment due to failure of the temperature sensor 62 or the smart meter 63. At the same time, the power consumption of the user equipment is detected by the smart meter 63, so that the PLC controller can be adjusted to a reasonable operating mode according to the user quantity, which can improve the flexibility and intelligence of the refrigeration system 100.

[0052] In some embodiments, the operation mode of the refrigeration system 100 includes a full-load operation mode and a low-load operation mode, wherein in the full-load operation mode, the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 operate simultaneously, and in the low-load operation mode, the internal cooling circulation system 40 and the air cooling unit 51 operate simultaneously.

[0053] In this way, in the case of high heat exchange requirements such as high ambient temperature or high power consumption of user equipment, the control device 60 adjusts the refrigeration system 100 to switch to the full-load operation mode, so that the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 are operated at the same time, so as to improve the heat dissipation efficiency of the refrigeration system 100, thereby adapting to the application scenario with high heat exchange requirements. In the case of low heat exchange requirements such as relatively low ambient temperature or relatively low power consumption of user equipment, the control device 60 adjusts the refrigeration system 100 to switch to the low-load operation mode, so that the internal cooling circulation system 40 and the air cooling unit 51 are operated at the same time, and the fluorine cooling system stops working, thereby reducing the heat dissipation efficiency of the refrigeration system 100 to adapt to the application scenario with low heat exchange requirements. It can be seen that the refrigeration system 100 of the present application can be adapted to application scenarios with different heat dissipation requirements, so as to help expand the scope of application of the refrigeration system 100.

[0054] Optionally, the operation mode of the refrigeration system 100 also includes a high-load operation mode. In the high-load operation mode, the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 operate simultaneously, and the equipment operation frequency in the air cooling unit 51 and the fluorine cooling unit 52 in the high-load operation mode is lower than the equipment movement frequency in the full-load operation mode.

[0055] That is, by controlling the operating frequency of the equipment in the air cooling unit 51 and the fluorine cooling unit 52 (such as the first circulation pump 511, the first fan 513, the compressor 521 or the second fan 526), ​​the heat dissipation efficiency of the air cooling unit 51 and the fluorine cooling unit 52 is controlled, thereby adjusting the heat dissipation efficiency of the refrigeration system 100 to meet different heat dissipation requirements, thereby enriching the operating mode of the refrigeration system 100 and making the operation of the refrigeration system 100 more flexible.

[0056] It can be understood that in other embodiments, the operation mode of the refrigeration system 100 may also include a medium-load operation mode. In the medium-load operation mode, the internal cooling system and the fluorine cooling unit 52 operate simultaneously, so that the heat dissipation efficiency of the refrigeration system 100 is between the heat dissipation efficiencies of the high-load operation mode and the low-load operation mode, so that the refrigeration system 100 is more flexible and can be adapted to more application scenarios.

[0057] Please combine Fig. 9 In some embodiments, there are multiple refrigeration systems 100, and the multiple refrigeration systems 100 are arranged in parallel.

[0058] In this way, by connecting multiple refrigeration systems 100 in parallel, the operating mode of multiple refrigeration systems 100 or a single refrigeration system 100 can be adjusted according to demand, thereby improving the heat dissipation efficiency and meeting higher heat dissipation requirements, and expanding the scope of application of the refrigeration system 100.

[0059] Optionally, in the full-load operation mode, the startup priority of the fluorine cooling unit 52 is higher than the startup priority of the air cooling unit 51, so that in the full-load operation mode, multiple fluorine cooling units 52 are started, and multiple air cooling units 51 are started or shut down. That is to say, in the scenario where multiple refrigeration systems 100 are connected in parallel, in the full-load operation mode, the control device 60 preferentially controls multiple refrigeration systems 100 to start the fluorine cooling unit 52, while the air cooling unit 51 does not work. When its cooling capacity does not meet the heat dissipation demand, the control device 60 controls the air cooling unit 51 to start, so that the fluorine cooling unit 52 and the air cooling unit 51 operate at the same time.

[0060] In this way, the operation balance of the plurality of refrigeration systems 100 can be improved, which is beneficial to reducing the damage caused by the refrigeration system 100 in the full-load operation mode, thereby extending the service life of the refrigeration system 100 while meeting the heat dissipation demand.

[0061] Similarly, in the high-load operation mode, the startup priority of the air cooling unit 51 is higher than the startup priority of the fluorine cooling unit 52, so that in the high-load operation mode, multiple air cooling units 51 are started, and multiple fluorine cooling units 52 are started or shut down. That is to say, in the scenario where multiple refrigeration systems 100 are connected in parallel, in the high-load operation mode, the control device 60 preferentially controls multiple refrigeration systems 100 to start the air cooling unit 51, while the fluorine cooling unit 52 does not work. When its cooling capacity does not meet the heat dissipation demand, the fluorine cooling unit 52 is controlled to start by the control device 60, so that the fluorine cooling unit 52 and the air cooling unit 51 can run at the same time.

[0062] For ease of reading and understanding, the following briefly describes the operation control of the refrigeration system 100 in different scenarios:

[0063] In areas where the ambient temperature varies greatly according to seasons, the user can preset the first high temperature value and the first low temperature value in the control device 60 according to actual conditions. The following describes the scenarios of only one refrigeration system 100 and multiple refrigeration systems 100 for heat dissipation.

[0064] (1) For a scenario with only one refrigeration system 100:

[0065] Please also read Figure 2 as well as Figures 5 to 8 When the ambient temperature is higher than the first high temperature value, the control device 60 controls the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 to run simultaneously, and adjusts the compressor 521, the first circulation pump 511, the second circulation pump 43, the first fan 513, the second fan 526 and other equipment to have a larger operating frequency, so that the refrigeration system 100 switches to the full-load operation mode. At this time, the refrigeration system 100 has a greater heat dissipation efficiency.

[0066] When the ambient temperature is lower than the first high temperature value and higher than the first low temperature value, the control device 60 controls the internal cooling circulation system 40, the air cooling unit 51 and the fluorine cooling unit 52 to run simultaneously, and adjusts the compressor 521, the first circulation pump 511, the second circulation pump 43, the first fan 513, the second fan 526 and other equipment to have a lower operating frequency, so that the refrigeration system 100 switches to a high-load operation mode. At this time, the heat dissipation efficiency of the refrigeration system 100 is relatively large, but less than the heat dissipation efficiency in the full-load operation mode.

[0067] When the ambient temperature is lower than the first low temperature value, the control device 60 controls the internal cooling circulation system 40 and the air cooling unit 51 to run simultaneously, and the fluorine cooling unit 52 stops working, so that the refrigeration system 100 switches to a low-load operation mode. At this time, the refrigeration system 100 has a lower heat dissipation efficiency; when the ambient temperature continues to decrease, the control device 60 controls the speed of the first fan 513 of the air cooling unit 51 to gradually decrease until the first fan 513 stops.

[0068] (2) For a scenario where multiple refrigeration systems 100 are connected in parallel:

[0069] Please also read Figures 5 to 9 When the ambient temperature is higher than the first high temperature value, the control device 60 controls the priority control of the multiple fluorine cooling units 52 to start, while the air cooling unit 51 does not work. When the cooling capacity does not meet the heat dissipation demand, the control device 60 controls the air cooling units 51 to start one by one, so that the fluorine cooling units 52 and the air cooling units 51 of some refrigeration systems 100 are running at the same time, and only the fluorine cooling units 52 of the other refrigeration systems 100 are started, or the fluorine cooling units 52 and the air cooling units 51 of all refrigeration systems 100 are running at the same time;

[0070] When the ambient temperature is lower than the first high temperature value and higher than the first low temperature value, the control device 60 preferentially controls multiple air cooling units 51 to start, while the fluorine cooling unit 52 does not work. When the cooling capacity does not meet the heat dissipation demand, the control device 60 controls the fluorine cooling units 52 to start one by one, so that the fluorine cooling units 52 and air cooling units 51 of some refrigeration systems 100 can run at the same time, and only the air cooling units 51 of another part of the refrigeration system 100 can be started, or the fluorine cooling units 52 and air cooling units 51 of all refrigeration systems 100 can run at the same time.

[0071] When the ambient temperature is lower than the first low temperature value, the control device 60 controls multiple air cooling units 51 to start as needed, while the fluorine cooling unit 52 does not work, that is, when one air cooling unit 51 can meet the current heat dissipation demand, other air cooling units 51 and fluorine cooling units 52 do not work.

[0072] It can be understood that in other embodiments, in order to improve the matching degree of heat dissipation efficiency and heat dissipation requirements and the flexibility of the refrigeration system 100, a suitable operating combination can also be selected based on the power consumption of the user equipment detected by the smart meter 63. For example, when the ambient temperature is lower than the first high temperature value and higher than the first low temperature value, and the cooling power of the air cooling unit 51 is 35KW, the cooling power of the fluorine cooling unit 52 is 65KW, and the heat exchange amount required by the user equipment is 130KW, two fluorine cooling units 52 can be operated simultaneously while the air cooling unit 51 is not working, or, it can be a combination of two air cooling units 51 and one fluorine cooling unit 52 operating simultaneously. The specific setting can be based on actual needs and is not limited here.

[0073] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A refrigeration system, characterized in that: include: A shell and a first plate heat exchanger, a second plate heat exchanger, an internal cooling circulation system, an external cooling circulation system and a control device installed in the shell, the external cooling circulation system includes an air cooling unit and a fluorine cooling unit, the air cooling unit and the internal cooling circulation system perform heat exchange through the first plate heat exchanger, the fluorine cooling unit and the internal cooling circulation system perform heat exchange through the second plate heat exchanger, the control device is electrically connected to the internal cooling circulation system, the air cooling unit and the fluorine cooling unit, respectively, and the control device is used to control the start and stop of the internal cooling circulation system, the air cooling unit and the fluorine cooling unit.

2. The refrigeration system according to claim 1, characterized in that: The air cooling unit includes a first circulation pump and a first tube-fin heat exchanger, wherein the first circulation pump, the first tube-fin heat exchanger and the first plate heat exchanger are connected to each other through pipelines respectively; the fluorine cooling unit includes a compressor, an oil separator, a second tube-fin heat exchanger, a liquid storage tank and an expansion valve which are connected in sequence through pipelines, and the second plate heat exchanger is connected to the compressor and the expansion valve through a pipeline.

3. The refrigeration system according to claim 2, characterized in that: The air cooling unit further comprises a first fan, which is mounted on the housing and arranged corresponding to the first tube-fin heat exchanger; and / or, The fluorine cooling unit also includes a second fan, which is installed on the shell and arranged corresponding to the second tube-fin heat exchanger.

4. The refrigeration system according to claim 1, characterized in that: The internal cooling circulation system includes an inlet pipe, an outlet pipe and a second circulation pump, one end of the second circulation pump is connected to the inlet pipe, the other end of the second circulation pump is connected to the inlet of the first plate heat exchanger or the second plate heat exchanger, the outlet pipe is connected to the outlet of the first plate heat exchanger or the second plate heat exchanger, and the inlet pipe and the outlet pipe extend outside the shell.

5. The refrigeration system according to claim 1, characterized in that: The control device includes a PLC controller and a temperature sensor electrically connected to the PLC controller, the temperature sensor is used to detect the ambient temperature and transmit the temperature signal to the PLC controller, the PLC controller is electrically connected to the internal cooling circulation system, the air cooling unit and the fluorine cooling unit, and the PLC controller is used to control the start and stop of the internal cooling circulation system, the air cooling unit and the fluorine cooling unit according to the temperature signal.

6. The refrigeration system according to claim 5, characterized in that: The control device also includes a smart meter electrically connected to the PLC controller, the smart meter is used to detect the power consumption of the user equipment and transmit it to the PLC controller, and the PLC controller is also used to control the start and stop of the internal cooling circulation system, the air cooling unit and the fluorine cooling unit according to the power consumption of the user equipment.

7. The refrigeration system according to claim 1, characterized in that: The operation mode of the refrigeration system includes a full-load operation mode and a low-load operation mode, wherein in the full-load operation mode, the internal cooling circulation system, the air cooling unit and the fluorine cooling unit operate simultaneously, and in the low-load operation mode, the internal cooling circulation system and the air cooling unit operate simultaneously.

8. The refrigeration system according to claim 7, characterized in that: The operating mode of the refrigeration system also includes a high-load operating mode. In the high-load operating mode, the internal cooling circulation system, the air cooling unit and the fluorine cooling unit operate simultaneously, and the operating frequency of the equipment in the air cooling unit and the fluorine cooling unit in the high-load operating mode is lower than the equipment movement frequency in the full-load operating mode.

9. The refrigeration system according to claim 7 or 8, characterized in that: There are multiple refrigeration systems, and the multiple refrigeration systems are arranged in parallel.

10. The refrigeration system according to claim 9, characterized in that: In the full-load operation mode, the startup priority of the fluorine cooling unit is higher than the startup priority of the air cooling unit, so that in the full-load operation mode, multiple fluorine cooling units are started and multiple air cooling units are started or shut down.

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