A compressor and fluorine pump system based on a liquid-cooled cabinet

Abstract

The present invention relates to a compressor and a fluorine pump system based on a liquid-cooled cabinet, which includes a compressor, a condenser, a liquid storage tank, a fluorine pump, a first throttling device, and an evaporator connected in sequence along the refrigerant flow path. A first check valve is connected in parallel with the compressor, and a second check valve is connected in parallel with the fluorine pump; the liquid-cooled cabinet has a coolant circulation pipeline, and a liquid pump is provided on the coolant circulation pipeline; the coolant circulation pipeline has a coolant outlet and a coolant inlet respectively connected to the medium inlet to be cooled and the medium outlet to be cooled of the evaporator. The present invention directly exchanges heat between the refrigerant and the coolant of the liquid-cooled cabinet in the evaporator, with high heat exchange efficiency and small heat loss; in addition, in the traditional air-cooled mode, since air cooling is used, the temperature of the air needs to be very low, while in liquid cooling, the coolant is used for cooling, and the server can still operate stably when the coolant temperature is 40°C. The evaporation temperature can be between 30 and 35°C, and the power of the compressor can be greatly reduced, with better energy-saving effects.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid cooling, and particularly relates to a compressor and a fluorine pump system based on a liquid-cooled cabinet. Background Art

[0002] With the rapid development of data centers, the rapid growth of energy consumption has become an issue that cannot be ignored in the development of the data center industry. Traditional air cooling can no longer meet the timeliness requirements of data center heat dissipation, and liquid cooling technology, as a new generation of data center refrigeration method, is emerging. According to the contact method between the liquid refrigerant and the heat source, liquid cooling technology can be divided into cold plate type (indirect contact), spray type (direct contact), and immersion type (direct contact). In comparison, immersion liquid cooling can better meet the requirements of energy conservation and consumption reduction.

[0003] In the prior art, for example, the series liquid-gas dual-channel data center refrigeration system disclosed in the patent document with the publication number of CN110381698B adopts the liquid-gas dual-channel cooling technology. Its air cooling system and liquid cooling system respectively perform heat exchange with the water in the cooling tower through the first heat exchanger and the second heat exchanger, with relatively low heat exchange efficiency and large heat loss. Summary of the Invention

[0004] Based on the above-mentioned disadvantages and deficiencies existing in the prior art, one of the purposes of the present invention is to at least solve one or more of the above problems existing in the prior art. In other words, one of the purposes of the present invention is to provide a compressor and a fluorine pump system based on a liquid-cooled cabinet that meet one or more of the foregoing requirements.

[0005] In order to achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0006] A compressor and a fluorine pump system based on a liquid-cooled cabinet, comprising a compressor, a condenser, a liquid storage tank, a fluorine pump, a first throttling device, and an evaporator connected in sequence along the refrigerant flow path. Among them, a first one-way valve is connected in parallel with the compressor, and a second one-way valve is connected in parallel with the fluorine pump;

[0007] The liquid-cooled cabinet has a coolant circulation pipeline, and a liquid pump is provided on the coolant circulation pipeline;

[0008] The coolant circulation pipeline has a coolant outlet and a coolant inlet respectively connected to the medium inlet to be cooled and the medium outlet to be cooled of the evaporator.

[0009] As a preferred solution, a first pressure sensor and a first temperature sensor are further provided on the refrigerant flow path, respectively located at the inlet of the fluorine pump.

[0010] As a preferred solution, a on-off valve is further provided on the refrigerant flow path, located between the fluorine pump and the first throttling device.

[0011] As a preferred solution, a dryer filter is further provided in the refrigerant flow path, which is located between the liquid storage tank and the fluorine pump.

[0012] As a preferred solution, a liquid level indicator is further provided in the refrigerant flow path, which is located between the liquid storage tank and the dryer filter.

[0013] As a preferred solution, the number of the liquid-cooled cabinets is N, where N is an integer greater than 1; correspondingly, the evaporators are arranged in one-to-one correspondence with the liquid-cooled cabinets;

[0014] The refrigerant flow path includes a main flow path, N outlet branches and N inlet branches that are respectively connected to the N evaporators in one-to-one correspondence. Each outlet branch, its corresponding evaporator, and the inlet branch form their respective refrigerant circulation loops with the main flow path; among them, the inlet branch is connected to the refrigerant inlet of the compressor.

[0015] As a preferred solution, a first throttling device is provided in the main flow path, and / or a first throttling device is respectively provided in each outlet branch.

[0016] As a preferred solution, based on the compressor and fluorine pump system of the liquid-cooled cabinet, an anti-cavitation branch and a heat exchanger are further included. The heat exchanger is located at the refrigerant outlet of the condenser; the inlet of the anti-cavitation branch is communicated with the refrigerant flow path and is located between the heat exchanger and the liquid storage tank or the fluorine pump; the outlet of the anti-cavitation branch is connected to the refrigerant inlet of the compressor; among them, the anti-cavitation branch and the refrigerant flow path are respectively communicated with two heat exchange channels of the heat exchanger, and a second throttling device is provided at the inlet of the anti-cavitation branch;

[0017] A second pressure sensor and a second temperature sensor are further provided in the refrigerant flow path, which are respectively located between the condenser and the heat exchanger.

[0018] As a preferred solution, a third temperature sensor and a fourth temperature sensor are provided in the anti-cavitation branch, which are respectively located on both sides of the heat exchanger.

[0019] As a preferred solution, the first throttling device and the second throttling device are selected from one of an expansion valve, a capillary tube, and a throttling short tube.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) In the present invention, the refrigerant directly exchanges heat with the coolant of the liquid-cooled cabinet in the evaporator, with high heat exchange efficiency and small heat loss; in addition, in the traditional air-cooled mode, since air cooling is used, the temperature of the air needs to be very low. Therefore, the evaporation temperature of the system is between 7 and 15 °C. However, in liquid cooling, the coolant is used for cooling, and the server can still operate stably when the coolant temperature is 40 °C. Therefore, the evaporation temperature of the system can be between 30 and 35 °C. With the increase of the evaporation temperature, the power of the compressor can be greatly reduced, bringing a stronger energy-saving effect;

[0022] (2) The present invention utilizes the first pressure sensor and the first temperature sensor to obtain the subcooling degree of the refrigerant in the refrigerant flow path, so as to determine whether the refrigerant is in a gas-liquid two-phase state; in order to prevent damage to the fluorine pump, the fluorine pump system is shut down and the compressor system is operated;

[0023] (3) The present invention sets a on-off valve at the rear side of the fluorine pump. By switching between compressor refrigeration and fluorine pump refrigeration, it can ensure the subcooling degree of the refrigerant and prevent cavitation of the fluorine pump;

[0024] (4) In order to prevent moisture residue during the installation of the refrigerant flow path, the present invention sets a drying filter in the refrigerant flow path;

[0025] (5) The present invention can realize the combined use of a set of compressor and fluorine pump system with multiple liquid-cooled cabinets, which can save outdoor floor area and reduce costs;

[0026] (6) The main flow path and each outlet branch in the refrigerant flow path of the present invention are provided with throttling devices to increase the subcooling degree and can transport the refrigerant to a farther position;

[0027] (7) The design of the anti-cavitation branch and the heat exchanger of the present invention can improve the subcooling degree of the refrigerant;

[0028] (8) The third temperature sensor and the fourth temperature sensor set in the anti-cavitation branch of the present invention can control the opening degree of the second throttling device through the temperature difference before and after the heat exchanger. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the compressor and fluorine pump system based on a liquid-cooled cabinet in Embodiment 1 of the present invention;

[0030] Figure 2 is a schematic structural diagram of the compressor and fluorine pump system based on a liquid-cooled cabinet in Embodiment 2 of the present invention;

[0031] Figure 3 is a schematic structural diagram of the compressor and fluorine pump system based on a liquid-cooled cabinet in Embodiment 3 of the present invention;

[0032] Figure 4 is a schematic structural diagram of the compressor and fluorine pump system based on a liquid-cooled cabinet in Embodiment 4 of the present invention;

[0033] Figure 5 is a schematic structural diagram of the compressor and fluorine pump system based on a liquid-cooled cabinet in Embodiment 5 of the present invention. Detailed Embodiments

[0034] To more clearly illustrate the embodiments of the present invention, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0035] Embodiment 1:

[0036] As Figure 1 shown, the compressor and fluorine pump system based on the liquid-cooled cabinet in this embodiment includes a compressor 1, a condenser 2, a liquid storage tank 3, a liquid sight glass 4, a drying filter 5, a first pressure sensor 6, a first temperature sensor 7, a fluorine pump 8, a first throttling device 9, and an evaporator 10, which are connected in sequence along the refrigerant flow path.

[0037] Among them, a first one-way valve 11 is connected in parallel with the compressor 1, and a second one-way valve 12 is connected in parallel with the fluorine pump 8; the first throttling device 9, the evaporator 10, and the liquid-cooled cabinet 13 are located indoors, and the rest of the components are located outdoors.

[0038] The liquid-cooled cabinet 13 in this embodiment has a coolant circulation pipeline 14, and a liquid pump 15 is provided on the coolant circulation pipeline 14. Among them, the coolant circulation pipeline 14 has a coolant outlet and a coolant inlet respectively connected to the medium inlet and medium outlet to be cooled of the evaporator 10, that is, the refrigerant flow path and the coolant circulation pipeline are respectively communicated with two heat exchange channels of the evaporator 10.

[0039] The drying filter 5 in this embodiment is used to absorb moisture and prevent moisture from remaining in the flow path during the installation of the flow path, causing system failures.

[0040] When the outdoor temperature reaches the switching point and the system switches from compression refrigeration to fluorine pump refrigeration, it is necessary to prevent gas from entering the fluorine pump and causing damage to the fluorine pump. Therefore, in this embodiment, a first pressure sensor 6 and a first temperature sensor 7 are added at the inlet of the fluorine pump, and the subcooling degree of the refrigerant can be calculated. When it is judged that the refrigerant in the flow path is a gas-liquid two-phase, in order to prevent damage to the fluorine pump, the fluorine pump system is shut down and the compressor system is operated.

[0041] The refrigerant flow path of this embodiment is also provided with an on-off valve 16, and the on-off valve 16 is located between the fluorine pump 8 and the first throttling device 9. The on-off valve 16 is a solenoid valve or a manual valve, for example: an electronic expansion valve, an electric ball valve, etc. Specifically, a solenoid valve is arranged at the rear side of the fluorine pump. When the compression refrigeration is switched to the fluorine pump refrigeration control, first, the subcooling degree of the refrigerant is calculated according to the first pressure sensor and the first temperature sensor at the inlet of the fluorine pump. When the subcooling degree ≥ 3K, it indicates that the refrigerant is all liquid, and the compressor can be directly turned off and the fluorine pump system can be turned on. When the subcooling degree is less than 3K, it indicates that there may be gas at the inlet of the fluorine pump. At this time, the solenoid valve is closed, and the compressor continues to operate at an appropriate frequency. At this time, the refrigerant liquid in the system cannot flow into the evaporator and remains liquid all the time, while the gas in the evaporator is continuously sucked into the compressor, and the high-pressure gas continuously enters the condenser, increasing the condenser pressure, making it easier for the refrigerant to become liquid. At the same time, the condenser fan runs at full speed, and the subcooling degree of the liquid continuously increases. When the subcooling degree detected at the inlet of the fluorine pump ≥ 3K, the compressor stops, the solenoid valve opens, the condenser fan speed runs according to the control, and the fluorine pump starts to run.

[0042] The first throttling device 9 of this embodiment can be selected from throttling devices such as a thermostatic expansion valve, a capillary tube, and a throttling short tube.

[0043] This embodiment combines the compressor, the fluorine pump system and the liquid cooling system. Utilizing the characteristic that the coolant temperature of the liquid cooling is high, compared with the existing air cooling system, it has the characteristics of significantly improving energy efficiency and expanding the natural cooling time, and has a very strong energy-saving advantage.

[0044] In the traditional air cooling mode, due to using air cooling and the air temperature needs to be very low, the evaporation temperature of the system is between 7 and 15 °C. However, in liquid cooling, the coolant is used for cooling, and the server can still operate stably when the coolant temperature is 40 °C. Therefore, the evaporation temperature of the system can be between 30 and 35 °C. The increase in the evaporation temperature brings a more powerful energy-saving effect. Specifically as follows:

[0045] In the compression refrigeration mode of the compressor and the fluorine pump system: as the evaporation temperature increases, the power of the compressor drops significantly. In the compression refrigeration mode, the power consumption of the liquid cooling system is much less than that of the air cooling mode.

[0046] In the refrigerant pump cooling mode of the compressor and the refrigerant pump system: Since the coolant temperature in the room is high, the outdoor temperature point at which the refrigerant pump can operate is higher than the air-cooled temperature point. Currently, the outdoor ambient temperature point for the refrigerant pump switching in the air-cooled system is around 10°C. Therefore, the air-cooled refrigerant pump can only be applied to the northern regions with relatively low temperatures. In the southern regions, due to the relatively short time when the ambient temperature < 10°C, the economic benefits are poor and it is more difficult to promote. By using a liquid-cooled refrigerant pump system, the outdoor ambient temperature point for the refrigerant pump to start can be above 20°C, which can greatly increase the operating time of the refrigerant pump system. The power of the refrigerant pump is much smaller than the power consumption of the compressor. The longer annual operating time of the refrigerant pump will lead to a significant reduction in the annual power consumption of the system. In addition, due to the increase in the evaporation temperature, the outdoor temperature at which the refrigerant pump can operate will also be much higher than that of the traditional air-cooled refrigerant pump. The traditional air-cooled refrigerant pump generally starts operating at an outdoor temperature of around 10°C, while this system can operate at an outdoor temperature above 20°C, greatly extending the natural cooling time. At the same time, it breaks through the limitation that most air-cooled refrigerant pumps are used in the northern regions, with better energy-saving effects and a wider scope of application.

[0047] In summary, the combination of the compressor and the refrigerant pump system with the liquid-cooled system will bring higher energy-saving effects than the air-cooled refrigerant pump system.

[0048] Embodiment 2:

[0049] The difference between the compressor and refrigerant pump system based on the liquid-cooled cabinet in this embodiment and that in Embodiment 1 is as follows:

[0050] The number of liquid-cooled cabinets 13 is N, where N is an integer greater than 1; for example, as Figure 2 shown, N is taken as 2; correspondingly, the evaporators 10 are arranged in one-to-one correspondence with the liquid-cooled cabinets 13, that is, the number of evaporators 10 is also N;

[0051] The refrigerant flow path includes a main flow path I, N outlet branch paths II and N inlet branch paths III that are respectively connected to the N evaporators in one-to-one correspondence. Each outlet branch path, its corresponding evaporator, and the inlet branch path form their respective refrigerant circulation loops with the main flow path; among them, the inlet branch path III is connected to the refrigerant inlet of the compressor.

[0052] Among them, a first throttling device 9 is respectively arranged on each of the outlet branch paths II;

[0053] In this embodiment, a parallel unit of multiple evaporators is used, and multiple liquid-cooled cabinets share one outdoor unit. Compared with Embodiment 1, it can greatly save the outdoor floor area and cost. This system can also integrate a refrigerant pump or not integrate a refrigerant pump.

[0054] In addition, each evaporator in the indoor part is equipped with a separate first throttling device, which can meet the individual adjustment of the indoor liquid-cooled cabinets. The loads and operating conditions among multiple liquid-cooled cabinets can be different;

[0055] Other structures can refer to Embodiment 1.

[0056] Embodiment 3:

[0057] The compressor and fluorine pump system based on the liquid-cooled cabinet in this embodiment is different from that in Embodiment 2 in that:

[0058] As Figure 3 shown, all the evaporators in the indoor part share a first throttling device 9. It is also a parallel connection of multiple liquid-cooled cabinets. However, there is only one first throttling device and it is placed outdoors. The indoor liquid-cooled cabinets cannot be adjusted individually. The refrigeration effects of multiple liquid-cooled cabinets are the same, and the refrigeration output of the cabinets cannot be adjusted individually according to the load of the liquid-cooled cabinets. However, the cost is low and the structure is relatively simple;

[0059] Other structures can refer to Embodiment 1.

[0060] Embodiment 4:

[0061] The compressor and fluorine pump system based on the liquid-cooled cabinet in this embodiment is different from that in Embodiment 2 or 3 in that: it is a combination of Embodiment 2 and Embodiment 3;

[0062] Specifically, as Figure 4 shown, a first throttling device 9 is provided in both the main flow path and each outlet branch to increase the subcooling degree of the refrigerant so as to transport the refrigerant to a farther position;

[0063] Other structures can refer to Embodiment 1.

[0064] Embodiment 5:

[0065] The compressor and fluorine pump system based on the liquid-cooled cabinet in this embodiment is different from that in Embodiment 1 in that:

[0066] As Figure 5 shown, the compressor and fluorine pump system based on the liquid-cooled cabinet in this embodiment further includes an anti-cavitation branch IV and a heat exchanger 17. The heat exchanger 17 is located at the refrigerant outlet of the condenser 2; the inlet of the anti-cavitation branch IV is communicated with the refrigerant flow path and is located between the heat exchanger 17 and the liquid storage tank 3; the outlet of the anti-cavitation branch IV is connected to the refrigerant inlet of the compressor 1; wherein, the anti-cavitation branch IV and the refrigerant flow path are respectively communicated with two heat exchange channels of the heat exchanger 17, and a second throttling device 18 is provided at the inlet of the anti-cavitation branch IV;

[0067] Among them, the heat exchanger 17 is preferably a plate heat exchanger, and a conventional heat exchanger such as a shell-and-tube heat exchanger can also be selected.

[0068] When operating the fluorine pump system at a relatively high ambient temperature, the condenser cannot cool all the gaseous refrigerant into a liquid state. After the gas-liquid two-phase refrigerant enters the fluorine pump, due to the presence of gas, cavitation occurs in the fluorine pump, which is likely to cause damage. In this embodiment, a plate heat exchanger is provided at the outlet of the liquid storage tank of the compressor and the fluorine pump system, and a second throttling device is provided at the inlet of the anti-cavitation branch. Among them, the inlet of one path of the plate heat exchanger is the outlet of the condenser, and the outlet is the inlet of the liquid storage tank. This path is the main path; the inlet of the other path is the liquid path branch, and the outlet is the suction end of the compressor (i.e., the refrigerant inlet). This path is the branch path. After adding the plate heat exchanger and the anti-cavitation branch, after the gas-liquid two-phase refrigerant flows through the plate heat exchanger, a part of it enters the second throttling device through the branch path. Under the throttling effect of the second throttling device, the liquid evaporates, absorbs heat, and the temperature drops. This part of the low-temperature gas-liquid cools the gas-liquid two-phase refrigerant in the main path in the plate heat exchanger to obtain liquid-phase refrigerant, and can also increase the subcooling degree of the refrigerant to ensure that all the refrigerant entering the fluorine pump is liquid. Moreover, it can still play a role in increasing the subcooling degree of the refrigerant in the compression refrigeration cycle and increasing the refrigerant transmission distance.

[0069] In addition, a second pressure sensor 19 and a second temperature sensor 20 are also provided in the refrigerant flow path, which are respectively located between the condenser 2 and the heat exchanger 17. By using the second pressure sensor 19 and the second temperature sensor 20, the subcooling degree of the refrigerant can be calculated to determine whether to open the second throttling device.

[0070] The anti-cavitation branch of this embodiment is provided with a third temperature sensor 21 and a fourth temperature sensor 22, which are respectively located on both sides of the plate heat exchanger, that is, temperature sensors are added at the inlet and outlet of the branch path of the plate heat exchanger, and the opening degree of the second throttling device is controlled by the temperature difference before and after.

[0071] The second throttling device of this embodiment uses an electronic expansion valve to accurately control the throttling effect, and existing throttling devices such as capillary tubes and throttling short tubes can also be used.

[0072] Other structures can refer to Embodiment 1.

[0073] Embodiment 6:

[0074] The difference between the compressor and the fluorine pump system based on the liquid-cooled cabinet of this embodiment and that of Embodiment 5 lies in:

[0075] The inlet of the anti-cavitation branch is connected to the refrigerant flow path, but the position is between the liquid storage tank and the fluorine pump, and the technical effects described in Embodiment 5 can also be achieved, realizing structural diversification;

[0076] Other structures can refer to Embodiment 1.

[0077] Embodiment 7:

[0078] The compressor and fluorine pump system based on the liquid-cooled cabinet in this embodiment is different from those in Embodiments 1-6 in that:

[0079] One or more of the first pressure sensor, the first temperature sensor, the dryer filter, and the sight glass can be omitted to simplify the structure;

[0080] For other structures, reference can be made to Embodiment 1.

[0081] It should be noted that the above embodiments can be freely combined as needed. The above is only a detailed description of the preferred embodiments and principles of the present invention. For those of ordinary skill in the art, according to the idea provided by the present invention, there will be changes in the specific implementation manners, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A compressor and fluorine pump system based on a liquid-cooled cabinet, characterized in that, It includes a compressor, a condenser, a liquid receiver, a fluorine pump, a first throttling device and an evaporator connected in sequence along the refrigerant flow path. Among them, a first check valve is connected in parallel with the compressor, and a second check valve is connected in parallel with the fluorine pump; The liquid-cooled cabinet has a coolant circulation pipeline, and a liquid pump is provided on the coolant circulation pipeline; The coolant circulation pipeline has a coolant outlet and a coolant inlet respectively connected to the to-be-cooled medium inlet and the to-be-cooled medium outlet of the evaporator; The refrigerant flow path is also provided with a first pressure sensor and a first temperature sensor, which are respectively located at the inlet of the fluorine pump and used to calculate the subcooling degree of the refrigerant; The refrigerant flow path is also provided with a cut-off valve, which is located between the fluorine pump and the first throttling device; When switching from compression refrigeration to fluorine pump refrigeration control, first calculate the subcooling degree of the refrigerant according to the first pressure sensor and the first temperature sensor at the inlet of the fluorine pump; when the subcooling degree ≥ 3K, directly turn off the compressor and turn on the fluorine pump; when the subcooling degree is less than 3K, close the cut-off valve, the compressor continues to run, the condenser fan is fully opened, and the subcooling degree of the liquid continuously increases. When the subcooling degree detected at the inlet of the fluorine pump ≥ 3K, the compressor stops, the cut-off valve opens, the condenser fan speed runs according to the control, and the fluorine pump starts to run.

2. The compressor and fluorine pump system based on a liquid-cooled cabinet according to claim 1, wherein The refrigerant flow path is also provided with a dryer filter, which is located between the liquid receiver and the fluorine pump; 3. The compressor and fluorine pump system based on a liquid-cooled cabinet according to claim 2, wherein The refrigerant flow path is also provided with a sight glass, which is located between the liquid receiver and the dryer filter; 4. A compressor and fluorine pump system based on a liquid-cooled cabinet according to any one of claims 1-3, characterized in that The number of the liquid-cooled cabinets is N, and N is an integer greater than 1; correspondingly, the evaporator and the liquid-cooled cabinet are arranged in one-to-one correspondence; The refrigerant flow path includes a main flow path, N outlet branches and N inlet branches respectively connected to the N evaporators in one-to-one correspondence. Each outlet branch and its corresponding evaporator and inlet branch respectively form their own refrigerant circulation loops with the main flow path; among them, the inlet branch is connected to the refrigerant inlet of the compressor.

5. The compressor and fluorine pump system based on a liquid-cooled cabinet according to claim 4, characterized in that, The first throttling device is arranged on the main flow path, and / or, the first throttling device is respectively arranged on each outlet branch.

6. A compressor and fluorine pump system based on a liquid-cooled cabinet according to any one of claims 1-3, characterized in that, It also includes an anti-cavitation branch and a heat exchanger. The heat exchanger is located at the refrigerant outlet of the condenser; the inlet of the anti-cavitation branch is communicated with the refrigerant flow path and is located between the heat exchanger and the liquid receiver or the fluorine pump; the outlet of the anti-cavitation branch is connected to the refrigerant inlet of the compressor; among them, the anti-cavitation branch and the refrigerant flow path are respectively communicated with two heat exchange channels of the heat exchanger, and a second throttling device is provided at the inlet of the anti-cavitation branch; The refrigerant flow path is also provided with a second pressure sensor and a second temperature sensor, which are respectively located between the condenser and the heat exchanger; 7. The compressor and fluorine pump system based on a liquid-cooled cabinet according to claim 6, characterized in that, The anti-cavitation branch is provided with a third temperature sensor and a fourth temperature sensor, which are respectively located on both sides of the heat exchanger; 8. A compressor and fluorine pump system based on a liquid-cooled cabinet according to claim 6, characterized in that, The first throttling device and the second throttling device are selected from one of an expansion valve, a capillary tube and a throttling short tube.

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