CN217464928U - Refrigeration system - Google Patents

Abstract

The disclosure provides a refrigeration system, and relates to the field of refrigeration. The refrigeration system includes: a storage unit for storing a non-combustion medium; the fire fighting unit is connected with the storage unit and is used for carrying out fire fighting on fire disasters through non-burning media; and the oil-free refrigerating unit is connected with the storage unit and is used for refrigerating a target area where the oil-free refrigerating unit is located through a non-combustion medium.

Description

Refrigeration system

Technical Field

The present disclosure relates to the field of refrigeration, and more particularly, to a refrigeration system.

Background

In the energy storage station, the edge computing center and other scenes, a refrigeration system and a fire protection system are generally required to be configured at the same time, wherein the refrigeration system is used for cooling and dissipating heat of the energy storage station and equipment inside the edge computing center so as to ensure stable operation of the energy storage station and the edge computing center. The fire-fighting system is used for timely fire fighting when a fire disaster occurs, so that greater economic loss is avoided.

However, the refrigeration system and the fire fighting system in the prior art are usually separately configured, which not only increases the equipment cost, but also occupies a large space, thereby making the overall configuration cost high.

In view of the above problems, no effective solution has been proposed.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a refrigeration system comprising: a storage unit for storing a non-combustion medium; the fire fighting unit is connected with the storage unit and is used for carrying out fire fighting on fire disasters through non-burning media; and the oil-free refrigerating unit is connected with the storage unit and is used for refrigerating a target area where the oil-free refrigerating unit is located through a non-combustion medium.

Optionally, the refrigeration system further comprises: the heat load unit is connected with the oil-free refrigeration unit and is used for adjusting the target temperature corresponding to the target area; the temperature detection unit is connected with the oil-free refrigeration unit and used for detecting the ambient temperature of the external environment of the target area; and the refrigeration mode control unit is connected with the heat load unit and the temperature detection unit and is used for determining the refrigeration mode of the oil-free refrigeration unit according to the target temperature and the ambient temperature.

Optionally, an oil-free refrigeration unit, comprising: the refrigeration pipeline is connected with the storage unit and is used for circularly transmitting the non-combustion medium in the oil-free refrigeration unit; and the liquid pump is arranged on the refrigerating pipeline, is connected with the storage unit and is used for controlling the flow of the non-combustion medium in the refrigerating pipeline through pressurization treatment.

Optionally, an oil-free refrigeration unit, comprising: and the evaporator is connected with the liquid pump through a refrigerating pipeline and is used for refrigerating a target area through evaporating a non-combustion medium.

Optionally, an oil-free refrigeration unit, comprising: the air pump is connected with the evaporator through a refrigeration pipeline and is used for compressing the non-combustion medium in a compression refrigeration mode; and the air pump bypass pipeline is connected with the air pump in parallel and is connected with the evaporator through a refrigeration pipeline and used for transmitting the non-combustion medium in a natural cooling refrigeration mode.

Optionally, an oil-free refrigeration unit, comprising: and the condenser is connected with the air pump and the air pump bypass pipeline through a refrigeration pipeline and is used for cooling the non-combustion medium from the air pump or the air pump bypass pipeline.

Optionally, the condenser is further connected with the storage unit, and the condenser transmits the cooled non-combustion medium to the storage unit.

Optionally, the refrigeration system further comprises: the fire detection unit is connected with the fire fighting unit and is used for detecting whether a fire disaster happens or not; the fire alarm unit is connected with the fire detection unit and used for generating alarm information; and the power supply controller is connected with the fire alarm unit and used for closing a power supply of target equipment according to the alarm information, wherein the target equipment is equipment with potential safety hazards in case of fire.

Optionally, the refrigeration system further comprises: and the delayer is connected with the fire alarm unit and used for determining the starting time of the fire-fighting unit according to the generation time of the alarm information.

Optionally, a fire fighting unit, comprising: a fire conduit connected to the storage unit for transporting the non-combustible medium from the storage unit to a location where a fire occurs; and the electric valve is arranged on the fire fighting pipeline, is connected with the delayer and is used for opening the fire fighting pipeline according to the starting time.

Optionally, a fire fighting unit, comprising: the branch pipelines are connected with the fire fighting pipelines and are used for branching the non-combustion medium flowing out of the fire fighting pipelines; the branch control valve is arranged on each branch pipeline and used for controlling the opening and closing state of each branch pipeline; and the spray head is arranged at the terminal of each branch pipeline and is used for spraying out non-combustion media.

In the present disclosure, a storage unit is used as a connection point, and the storage unit and the oil-free refrigeration unit are integrated into a refrigeration system, and the non-combustion medium is stored by using the storage unit, and the oil-free refrigeration unit is also connected with the storage unit while the fire fighting unit is connected with the storage unit. The fire-fighting unit carries out fire fighting and extinguishment on fire through a non-combustion medium in the storage unit, and the oil-free refrigeration unit refrigerates a target area where the oil-free refrigeration unit is located through the non-combustion medium in the storage unit.

From the above, since the present disclosure uses the storage unit to integrate the fire fighting unit and the oil-free refrigeration unit into a set of refrigeration system, wherein the non-combustible medium in the storage unit can be used for both fire extinguishing and refrigeration, compared with the prior art in which the fire fighting system and the refrigeration system are separately configured, the present disclosure can not only save at least one set of storage equipment and corresponding piping equipment, but also reduce the occupied area of the equipment, thereby reducing the overall configuration cost. In addition, because the oil-free refrigeration unit is used, the problem that the fire-fighting unit is easily blocked by lubricating oil caused by the lubricating oil in the refrigeration unit is also avoided, and the stable operation of the fire-fighting unit is ensured.

Therefore, through the refrigeration system disclosed by the invention, the purpose of integrating the fire fighting system and the refrigeration system into a set of system is achieved, so that the effects of saving configuration cost and configuration space are realized, and the technical problem of high configuration cost caused by the fact that the refrigeration system and the fire fighting system are required to be independently configured simultaneously in the prior art is solved.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

FIG. 1 is a block diagram of a refrigeration system according to the present disclosure;

FIG. 2 is a schematic diagram of a refrigeration system according to the present disclosure;

FIG. 3 is a schematic flow path of a non-combustion medium in a compression refrigeration mode according to the present disclosure;

FIG. 4 is a schematic flow diagram of a non-combusted media during a free cooling mode according to the present disclosure;

fig. 5 is a flow chart of fire fighting according to the present disclosure.

100-a memory cell; 200-a fire unit; 300-oil free refrigeration unit; 400-thermal load cell; 500-a fire detection unit;

210-an electrically operated valve; 220-a shunt control valve; 230-a spray head;

310-liquid pump; 320-an evaporator; 330-air pump; 340-condenser.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Example 1

Fig. 1 is a refrigeration system according to the present disclosure, as shown in fig. 1, comprising: storage unit 100, fire unit 200, oil-free refrigeration unit 300.

Wherein the storage unit 100 is used for storing non-combustion media. And a fire fighting unit 200 connected to the storage unit 100 for extinguishing a fire through a non-combustible medium. The oil-free refrigerating unit 300 is also connected to the storage unit 100 for refrigerating a target area in which the oil-free refrigerating unit 300 is located by a non-combustion medium.

Alternatively, the storage unit 100 may be a large-sized liquid storage tank, in which nonflammable media, such as R134a (a mixture containing tetrafluoroethane as a main component), R410A (a mixture containing difluoromethane and pentafluoroethane), R513A (a mixture containing hydrofluorocarbon and hydrofluoroolefin), R515B (a mixture containing hydrofluoroolefin as a main component), R1234ze (a mixture containing trifluoropropene as a main component), and CO2 (carbon dioxide) can be stored, and these nonflammable media themselves are refrigeration media having a good refrigeration effect, and therefore, these nonflammable media can also be used as a refrigerant in the oil-free refrigeration unit 300.

Alternatively, as shown in fig. 2, the fire fighting unit 200 includes at least a fire fighting pipe connected with the storage unit 100, an electric valve 210 provided on the fire fighting pipe, a plurality of branch pipes connected with the fire fighting pipe, a branch control valve 220 provided on each branch pipe, and a spray head 230 provided on a terminal end of each branch pipe. In addition, for use with the fire fighting unit 200, the refrigeration system of the present disclosure further includes at least a fire detection unit 500, a fire alarm unit, a power controller, and a time delay. Specifically, after a fire occurs, the fire detection unit 500 is first started, and after the fire is found, a prompt message is sent to the fire alarm unit, and the fire alarm unit generates an alarm signal after confirming that the fire actually occurs, and at the same time, the power controller is started, and the power controller shuts down the power supply of the equipment with potential safety hazard in the fire process. In addition, after the fire alarm unit generates the alarm signal, the delayer determines the starting time of the fire unit 200 according to the generation time of the alarm information, wherein a certain time delay exists between the starting time and the generation time, and the purpose of the delayer is to reserve the evacuation time for the evacuation personnel. After the start-up time has elapsed, the electric valve 210 is opened, and the non-combustible medium in the storage unit 100 acts as a fire extinguishing agent to flow through the fire fighting pipe, the branch pipe, and finally to be sprayed out by the spray head 230 to extinguish the fire.

Alternatively, as shown in fig. 2, the oil-free refrigeration unit 300 includes at least a refrigeration pipe, a liquid pump 310, an evaporator 320, an air pump 330, an air pump bypass pipe, and a condenser 340. In order to cooperate with the oil-free refrigeration unit 300, the refrigeration system of the present disclosure further includes a heat load unit 400, a temperature detection unit, and a refrigeration mode control unit. Specifically, the heat load unit 400 is configured to adjust a target temperature corresponding to the target area, the temperature detection unit is configured to detect an ambient temperature of an external environment of the target area, and when the ambient temperature is greater than the target temperature, the oil-free refrigeration unit 300 enters the compression refrigeration mode, where a flow path of the non-combustion medium is: evaporator 320, air pump 330, condenser 340, storage unit 100, liquid pump 310/liquid pump bypass line, expansion valve, evaporator 320. Wherein, the liquid pump bypass line and the expansion valve are also components of the oil-free refrigeration unit 300. In addition, when the ambient temperature is less than or equal to the target temperature, the oil-free refrigeration unit 300 enters the natural cooling refrigeration mode in which the flow paths of the non-combustion medium are: evaporator 320, air pump bypass pipe, condenser 340, liquid storage tank, liquid pump 310, expansion valve, evaporator 320. Wherein, in the natural cooling refrigeration mode, the air pump 330 does not operate.

Alternatively, the target area may be an indoor area of the energy storage station, or an indoor area in the edge calculation center, and all components in the oil-free refrigeration unit 300 are components that do not use lubricating oil.

As can be seen from the above, since the present disclosure uses the storage unit 100 to integrate the fire fighting unit 200 and the oil-free refrigeration unit 300 into a set of refrigeration system, wherein the non-combustible medium in the storage unit 100 can be used for both fire extinguishing and refrigeration, compared with two separate systems respectively configured in the prior art, the refrigeration system in the present disclosure can not only save at least one set of storage equipment and corresponding pipeline equipment, but also reduce the occupied area of the equipment, thereby reducing the overall configuration cost, improving the site applicability, and being capable of being used in the scene with a smaller use area.

In addition, since the oil-free refrigeration unit 300 is used, the problem that the fire fighting unit 200 is easily blocked by lubricating oil due to the presence of the lubricating oil in the refrigeration unit is also avoided, and the stable operation of the fire fighting unit 200 is ensured.

Therefore, through the refrigeration system disclosed by the invention, the purpose of integrating the fire fighting system and the refrigeration system into a set of system is achieved, so that the effects of saving configuration cost and configuration space are realized, and the technical problem of high configuration cost caused by the fact that the refrigeration system and the fire fighting system are required to be independently configured simultaneously in the prior art is solved.

Example 2

One of the main functional components of the refrigeration system of the present disclosure is to refrigerate the target area in which the oil-free refrigeration unit 300 is located. In order to realize this refrigeration function, the refrigeration system of this disclosure still includes: a heat load unit 400 connected to the oil-free refrigerating unit 300, for adjusting a target temperature corresponding to a target area; a temperature detection unit connected to the oil-free refrigerating unit 300, for detecting an ambient temperature of an external environment of the target area; and a cooling mode control unit connected to the heat load unit 400 and the temperature detection unit, for determining a cooling mode of the oil-less cooling unit 300 according to the target temperature and the ambient temperature.

Optionally, the heat load unit 400 may be a single chip microcomputer or a program control platform, as shown in fig. 2, the heat load unit 400 is connected to the oil-free refrigeration unit 300, and is configured to adjust a target temperature corresponding to a target area. For example, the target area is an indoor area of an energy storage station, and in order to ensure that the devices in the energy storage station work normally, the indoor temperature of the energy storage station is required to be maintained at 18 degrees celsius, and on the basis, the staff may set the target temperature to be 18 degrees celsius through the thermal load unit 400. Wherein, the staff can set the target temperature by self-defining through the heat load unit 400 according to the actual conditions.

Optionally, the temperature detection unit may be a temperature sensor, and when the target area is an indoor area, the external environment of the target area corresponds to an outdoor area. The refrigeration mode control unit may be a computer device such as a server, and after obtaining the target temperature and the ambient temperature, if the ambient temperature is greater than the target temperature, the refrigeration mode control unit determines that the oil-free refrigeration unit 300 enters the compression refrigeration mode, as shown in fig. 3, where the flow path of the non-combustion medium is: evaporator 320, air pump 330, condenser 340, storage unit 100, liquid pump 310/liquid pump bypass line, expansion valve, evaporator 320. Wherein, the liquid pump bypass line and the expansion valve are also components of the oil-free refrigeration unit 300. When the ambient temperature is less than or equal to the target temperature, the refrigeration mode control unit determines that the oil-free refrigeration unit 300 enters the natural cooling refrigeration mode, as shown in fig. 4, where the flow paths of the non-combustion medium are: evaporator 320, air pump bypass line, condenser 340, storage unit 100, liquid pump 310, expansion valve, evaporator 320. Wherein, in the natural cooling refrigeration mode, the air pump 330 does not operate.

It should be noted that, through two kinds of refrigeration mode intelligence refrigeration, realized more high-efficient energy-conserving refrigeration process, for example, when ambient temperature is less than or equal to the target temperature, do not start the air pump, energy consumption when can practicing thrift the air pump and use.

In an alternative embodiment, an oil-free refrigeration unit 300, comprises: a refrigerating pipe connected to the storage unit 100 for circulating the non-combustion medium in the oil-free refrigerating unit 300; and a liquid pump 310 disposed on the cooling pipe and connected to the storage unit 100 for controlling the flow of the non-combustion medium in the cooling pipe through a pressurization process.

Optionally, the liquid pump 310 may be a totally-enclosed fluorine pump, and in addition, the liquid pump 310 may be configured with a liquid pump bypass pipeline in parallel. When the pressure of the non-combustion medium in the cooling pipe is insufficient, the liquid pump 310 may pressurize the non-combustion medium, thereby controlling the flow of the non-combustion medium in the cooling pipe. Correspondingly, when the pressure of the non-combusted media in the refrigeration duct is sufficient, the liquid pump 310 is not activated and the non-combusted media can pass directly via the liquid pump bypass duct.

By mounting the liquid pump 310 on the cooling duct, it is ensured that the non-combusted medium can still flow smoothly in the cooling duct when the pressure is insufficient.

In an alternative embodiment, the oil-free refrigeration unit 300 further comprises: an evaporator 320, the evaporator 320 being connected to the liquid pump 310 through a refrigerant pipe for refrigerating the target area by evaporating the non-combustion medium.

Alternatively, the evaporator 320 may be in the form of copper aluminum fins or micro-channels, and the evaporator 320 may also be a cold plate liquid cooler. The evaporator 320 is used to perform evaporative cooling of the target area by evaporating the non-combustion medium, thereby ensuring stable operation of the equipment in the target area.

In an alternative embodiment, the oil-free refrigeration unit 300 further comprises: air pump 330 and air pump bypass conduit. The air pump 330 is connected with the evaporator 320 through a refrigeration pipeline and is used for compressing a non-combustion medium in a compression refrigeration mode; and the air pump bypass pipeline is connected with the air pump 330 in parallel, is connected with the evaporator 320 through a refrigeration pipeline, and is used for transmitting the non-combustion medium in the natural cooling refrigeration mode.

Optionally, the air pump 330 may be an oil-free compressor, and specifically, the air pump 330 may be any one of two compressors, namely an air-bearing suspension compressor and a magnetic suspension compressor. In addition, an air pump bypass valve may be disposed on the air pump bypass pipe, and the opening and closing state of the air pump bypass pipe may be controlled by the air pump bypass valve. In the compression refrigeration mode, the flow paths of the non-combustion medium are as follows: evaporator 320, air pump 330, condenser 340, storage unit 100, liquid pump 310/liquid pump bypass line, expansion valve, evaporator 320. In the natural cooling and refrigerating mode, the flow paths of the non-combustion medium are as follows: evaporator 320, air pump bypass pipe, condenser 340, liquid storage tank, liquid pump 310, expansion valve, evaporator 320.

Through setting up air pump 330 and air pump bypass pipeline, be adaptable to two kinds of refrigeration modes of compression refrigeration mode and natural cooling refrigeration mode, especially under the natural cooling mode, through not starting air pump 330, directly let non-combustion medium flow through from air pump bypass pipeline, can practice thrift the energy resource consumption that air pump 330 started and lead to.

In an alternative embodiment, the oil-free refrigeration unit 300 further includes a condenser 340, and the condenser 340 is connected to the air pump 330 and the air pump bypass pipeline through a refrigeration pipeline, and is used for cooling the non-combustion medium from the air pump 330 or the air pump bypass pipeline.

Optionally, the condenser 340 may be in the form of an air-cooled condensing heat exchange coil and a copper pipe aluminum fin, and the condenser 340 may also be in the form of an evaporative condenser 340, a water-fluorine heat exchanger, or the like 340. The condenser 340 is connected to one side of the air pump 330 through a cooling pipe, and the other side of the air pump 330 is connected to the evaporator 320, so that the temperature of the non-combustion medium after the evaporator 320 is operated is higher, and therefore the non-combustion medium after the evaporator 320 is operated can be cooled by the condenser 340.

Optionally, the condenser 340 is further connected to the storage unit 100, and the condenser 340 transfers the cooled non-combustion medium to the storage unit 100.

It should be noted that, by re-delivering the cooled non-combustion medium to the storage unit 100, the non-combustion medium is recycled, so that the utilization rate of the non-combustion medium is improved.

Example 3

One of the other important functional components of the refrigeration system of the present disclosure is to perform fire fighting in the event of a fire. To achieve this fire fighting function, as shown in fig. 2, the refrigeration system of the present disclosure further includes: a fire detection unit 500 connected to the fire fighting unit 200 for detecting whether a fire is occurring; a fire alarm unit connected to the fire detection unit 500 for generating alarm information; and the power supply controller is connected with the fire alarm unit and used for closing the power supply of the target equipment according to the alarm information, wherein the target equipment is equipment with potential safety hazard when a fire disaster happens.

Alternatively, the fire detection unit 500 may be a high temperature detector and a smoke detector. The core component of the high-temperature detector is a temperature sensor, and the core component of the smoke detector is a smoke sensor. The fire alarm unit may be an acoustic alarm device, a light alarm device, for example, as shown in fig. 5, when a fire alarm occurs, the fire detection unit 500 first detects fire information, and then the fire detection unit 500 transmits the fire information to the fire alarm unit and the fire extinguishing controller, which will generate acoustic alarm information and light alarm information after confirming that the fire information is authentic. The fire suppression controller in fig. 5 may be a fire confirmation platform, such as a fire control center. In practical applications, the fire suppression controller may be eliminated. In addition, in fig. 5, a manual control mode is also shown, when a person finds a fire, the fire information can be directly reported to the fire extinguishing controller in an electrical and manual mode, and the power supply controller and the electric valve 210 are started in a mechanical emergency manual mode.

The power supply controller can be a computer device such as a single chip microcomputer and a server and capable of running related control programs, the power supply controller can achieve the purposes of starting the linkage device and closing the device with potential safety hazards in the case of fire according to alarm information. For example, as shown in fig. 5, after the fire alarm unit generates alarm information, the power controller turns off the power of the oil-free refrigerating unit 300, the ventilator, and the equipment such as the opening of the protected area.

It should be noted that the fire detection unit 500 can timely find fire risks and improve the finding timeliness of the fire risks, the fire alarm unit can generate alarm information in the first time, the personnel and property safety can be guaranteed to the maximum extent, the power supply controller can timely close the power supply of the target device, further expansion of fire is avoided, and the safety of the target device in the fire is improved.

In an alternative embodiment, the refrigeration system further comprises: and the delayer is connected with the fire alarm unit and used for determining the starting time of the fire fighting unit 200 according to the generation time of the alarm information.

Optionally, as shown in fig. 5, the delayer may delay a certain interval time after the fire alarm unit generates the alarm information, and then start the fire fighting unit 200 to extinguish the fire, and this design may reserve sufficient evacuation time for the personnel, so as to avoid the problem that the personnel view is blurred and the evacuation is not timely due to the large amount of non-combustible medium sprayed by the fire fighting unit 200 when the fire fighting unit is extinguishing the fire.

In an alternative embodiment, fire protection unit 200, includes: a fire fighting pipe connected to the storage unit 100 for transporting the non-combustible medium from the storage unit 100 to a location where a fire occurs; and the electric valve 210 is arranged on the fire fighting pipeline, is connected with the delayer and is used for opening the fire fighting pipeline according to the starting time.

Optionally, the fire fighting pipeline is made of a non-combustible material, and the non-combustible medium in the storage unit 100 can be conveyed to a position where a fire occurs through the fire fighting pipeline. In addition, an electric valve 210 is provided on the fire fighting pipeline, and the electric valve 210 is connected with a retarder, which controls the electric valve 210 to be activated when the activation time generated by the retarder comes, as shown in fig. 5, so that the electric valve 210 automatically opens the fire fighting pipeline to allow the non-combustion medium in the storage unit 100 to flow into the fire fighting pipeline.

It should be noted that, the opening and closing state of the fire fighting pipeline is automatically controlled by the electric valve 210, so that the fire fighting efficiency can be improved when a fire occurs.

In an alternative embodiment, fire protection unit 200, includes: the branch pipelines are connected with the fire fighting pipelines and are used for branching the non-combustion medium flowing out of the fire fighting pipelines; a branch control valve 220 provided on each branch pipe for controlling an open/close state of each branch pipe; and a spray head 230 provided at a terminal end of each of the branch pipes for spraying a non-combustion medium.

Alternatively, in fig. 5, the shunt control valve 220 may be a pressure-sensitive control valve, and if the non-combustion medium flows into the shunt pipe and the pressure is sufficient, the shunt control valve 220 automatically opens, the non-combustion medium is transferred to the injection head 230, and the non-combustion medium is injected from the injection head 230. Wherein the spray head 230 is disposed near an ignition point, thereby eliminating a fire hazard at a fixed point. In addition, when the nozzle 230 sprays the non-combustion medium, the refrigeration system of the present disclosure may further generate a gas spraying prompt message, and when the nozzle is used to spray the non-combustion medium, the spraying area may also be increased.

It should be noted that the fire fighting part of the present disclosure is a gas fire fighting system, and the oil-free refrigeration unit 300 and the fire fighting unit 200 are organically combined into an integrated system through a liquid storage tank by taking the oversized liquid storage tank, the electric valve 210, the shunt control valve 220, the spray head 230, the fire fighting pipeline, the shunt pipeline and the like as hardware bases and adding intelligent fire fighting control, so that the configuration cost is saved, and the space utilization rate is improved.

The number of the embodiment of the present invention is only for description, and does not represent the advantages or disadvantages of the embodiment.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (11)

1. A refrigeration system comprising:

a storage unit (100) for storing a non-combustible medium;

a fire fighting unit (200) connected to the storage unit (100) for fighting a fire through the non-combustible medium;

the oil-free refrigeration unit (300) is connected with the storage unit (100) and is used for refrigerating a target area where the oil-free refrigeration unit (300) is located through the non-combustion medium.

2. The refrigeration system of claim 1, further comprising:

a heat load unit (400) connected to the oil-free refrigeration unit (300) for adjusting a target temperature corresponding to the target area;

a temperature detection unit connected to the oil-free refrigeration unit (300) for detecting an ambient temperature of an external environment of the target area;

and a refrigeration mode control unit connected to the heat load unit (400) and the temperature detection unit, for determining a refrigeration mode of the oil-free refrigeration unit (300) according to the target temperature and the ambient temperature.

3. The refrigeration system of claim 2, wherein the oil-free refrigeration unit (300) comprises:

a refrigeration conduit connected to the storage unit (100) for circulating the non-combustion medium in the oil-free refrigeration unit (300);

and the liquid pump (310) is arranged on the refrigerating pipeline, is connected with the storage unit (100) and is used for controlling the flow of the non-combustion medium in the refrigerating pipeline through pressurization treatment.

4. The refrigeration system of claim 3, wherein the oil-free refrigeration unit (300) comprises:

an evaporator (320) connected to the liquid pump (310) through the refrigeration conduit for refrigerating the target area by evaporating the non-combustion medium.

5. The refrigeration system of claim 4, wherein the oil-free refrigeration unit (300) comprises:

an air pump (330) connected to the evaporator (320) through the refrigeration duct for compressing the non-combustion medium in a compression refrigeration mode;

and the air pump bypass pipeline is connected with the air pump (330) in parallel, is connected with the evaporator (320) through the refrigeration pipeline and is used for transmitting the non-combustion medium in a natural cooling refrigeration mode.

6. The refrigeration system of claim 5, wherein the oil-free refrigeration unit (300) comprises:

and the condenser (340) is connected with the air pump (330) and the air pump bypass pipeline through the refrigeration pipeline and is used for cooling the non-combustion medium from the air pump (330) or the air pump bypass pipeline.

7. The refrigeration system of claim 6, wherein the condenser (340) is further connected to the storage unit (100), the condenser (340) delivering desuperheated, non-combustible media to the storage unit (100).

8. The refrigeration system of claim 1, further comprising:

a fire detection unit (500) connected to the fire fighting unit (200) for detecting whether a fire is occurring;

the fire alarm unit is connected with the fire detection unit (500) and used for generating alarm information;

and the power supply controller is connected with the fire alarm unit and used for closing a power supply of target equipment according to the alarm information, wherein the target equipment is equipment with potential safety hazard when a fire disaster happens.

9. The refrigeration system of claim 8, further comprising:

and the delayer is connected with the fire alarm unit and used for determining the starting time of the fire fighting unit (200) according to the generation time of the alarm information.

10. The refrigeration system of claim 9, wherein the fire protection unit (200) comprises:

a fire conduit connected to the storage unit (100) for transporting the non-combustible medium from the storage unit (100) to a location of a fire;

and the electric valve (210) is arranged on the fire fighting pipeline, is connected with the time delay unit and is used for opening the fire fighting pipeline according to the starting time.

11. The refrigeration system of claim 10, wherein the fire protection unit (200) comprises:

a plurality of branch pipes connected to the fire fighting pipe for branching off non-combustion media flowing out of the fire fighting pipe;

a branch control valve (220) provided on each branch pipe for controlling an open/close state of each branch pipe;

a spray head (230) disposed at a terminal end of each of the branch pipes for spraying the non-combustion medium.

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