CN116499197A - Mixed cooling system and cooling method - Google Patents

Abstract

The invention provides a hybrid cooling system and cooling method, including a refrigerant cycle system and an air-cooled cycle system; the refrigerant cycle includes a condenser, a compressor, an evaporator and an expansion valve, and the condenser, expansion valve, evaporator and all The above-mentioned compressors are sequentially connected in a closed loop through pipelines, the condenser is provided with a condensing fan, and the evaporator is provided with a cooling fan; gas. The present invention is provided with an air-cooled circulation system, which utilizes the temperature difference between the outside and the equipment to be cooled to exchange heat under the action of the air-cooled system; at the same time, a refrigerant circulation system is provided to use the compressor to perform work to dissipate heat from the equipment to be cooled. The two systems It can operate independently and jointly; in addition, according to the temperature detected in real time, the cooperation mode of the two systems can be precisely adjusted, which can reduce energy consumption and reduce noise.

Description

A hybrid cooling system and cooling method

technical field

The invention relates to the technical field of refrigeration, in particular to a hybrid cooling system and a cooling method.

Background technique

With the promotion and application of new energy sources such as solar energy and wind energy, energy storage technology has also developed. Among them, lithium batteries have relatively high energy, long service life, high rated voltage, high power tolerance, low self-discharge rate, and light weight. , green and environmental protection, and basically no water consumption in production, it has gradually become the mainstream product of energy storage.

At present, the application of lithium battery technology on the market is more common in industrial and commercial energy storage systems and optical storage charging and testing systems. However, since its application scenarios are mostly urban areas or industrial areas, it is necessary to control the noise during system operation and reduce energy consumption. In addition, in industrial and commercial energy storage systems and optical storage charging and testing systems, there are also electrical equipment such as PCS, DCDC, and photovoltaic controllers that are used in conjunction with lithium batteries, and their overall heat generation is relatively large.

In the existing technology, the lithium battery container system uses a common air-conditioning system to cool down, but it consumes a lot of power during operation, and the noise is difficult to control, and the operating cost of the system is high. However, the general air-cooled cooling technology has low noise and low energy consumption. , but it is difficult to achieve an effective cooling effect.

Contents of the invention

The technical problem to be solved by the present invention is: to provide a hybrid cooling system and cooling method, through the cooperation of the refrigerant circulation system and the air-cooling circulation system, according to the real-time detected ambient temperature and equipment temperature, formulate a corresponding coordination strategy, reduce Energy consumption while reducing noise.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A hybrid cooling system, including a refrigerant circulation system and an air-cooling circulation system;

The refrigerant circulation system includes a condenser, a compressor, an evaporator and an expansion valve, and the condenser, the expansion valve, the evaporator and the compressor are sequentially connected in a closed loop through pipelines, and the condenser is connected A condensing fan is provided, and a cooling fan is provided on the evaporator;

The air-cooled circulation system includes a ventilation window, the evaporator and the cooling fan, and the cooling fan cooperates with the ventilation window for ventilation.

In order to solve the above technical problems, another technical solution provided by the present invention is:

A cooling method, applied to the above-mentioned hybrid cooling system, comprising the steps of:

S1. Obtain the ambient temperature of the external environment and the equipment temperature of the equipment to be cooled;

S2. Calculate the cooling rate according to the equipment temperature obtained in real time;

S3. Increase the operating power of the compressor when it is detected that the cooling rate is lower than the preset cooling rate.

The beneficial effect of the present invention is that: the present invention provides a hybrid cooling system and cooling method, which is provided with an air-cooled circulation system, which uses the temperature difference between the outside world and the equipment to be cooled to perform heat exchange under the action of the air-cooled system; at the same time, it is provided The refrigerant circulation system uses the compressor to do work to dissipate heat from the cooling equipment. The two systems can operate independently or jointly; in addition, according to the real-time detected temperature, the cooperation mode of the two systems can be precisely adjusted to reduce energy consumption. Power consumption can also achieve the effect of reducing noise.

Description of drawings

Fig. 1 is a schematic diagram of a hybrid cooling system according to an embodiment of the present invention;

Fig. 2 is the flowchart of a kind of cooling method of the embodiment of the present invention;

FIG. 3 is a specific flowchart of a cooling method provided in Embodiment 5 of the present invention;

Label description:

1. Compressor; 2. Condenser; 3. Condensing fan; 4. Expansion valve;

5. Ventilation window; 6. Dust-proof device; 7. Cooling fan; 8. Evaporator;

9. Equipment to be cooled; 10. Ambient temperature sensor; 11. Equipment temperature sensor.

Detailed ways

In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

Please refer to Fig. 1, a hybrid cooling system is characterized in that it includes a refrigerant circulation system and an air-cooling circulation system;

The refrigerant circulation system includes a compressor 1, a condenser 2, an evaporator 8 and an expansion valve 4, and the condenser 2, the expansion valve 4, the evaporator 8 and the compressor 1 are sequentially connected through pipelines Closed-loop connection, the condenser 2 is provided with a condensing fan 3, and the evaporator 8 is provided with a cooling fan 7;

The air-cooled circulation system includes a ventilation window 5, the evaporator 8 and the cooling fan 7, and the cooling fan 7 cooperates with the ventilation window 5 for ventilation.

The working principle of the present invention is: firstly, the condenser 2, the compressor 1, the evaporator 8 and the expansion valve 4 are sequentially closed-loop connected to form a refrigerant cycle, that is, a general refrigeration cycle. The cooling of the agent, the evaporator 8 realizes the air cooling of the cooling equipment 9 through the cooling fan 7; secondly, the ventilation window 5, the evaporator 8 and the cooling fan 7 form an air cooling cycle, and the cooling system detects that the temperature of the equipment is different from that of the outside world during the working process. When the temperature difference is higher than the preset value, the ventilation window 5 is opened, and under the action of the cooling fan 7, the external air and the internal hot air are used for heat exchange; finally, according to the system regulation, the two systems can run in parallel, or The belt cooling device 9 can be cooled by separate operation.

Further, the air-cooled circulation system also includes a dust-proof device 6 , and the dust-proof device 6 is arranged inside the ventilation window 5 .

Further, the dustproof device 6 is a filter cotton dustproof net.

It can be seen from the above description that in order to prevent the outside air from bringing in dust or small particles and damaging the related facilities of the cooling system, a dust-proof device 6 is installed inside the ventilation window 5. Specifically, the dust-proof device 6 can be a filter cotton dust-proof net.

Further, the ventilation window 5 is an electric shutter door.

It can be seen from the above description that in order to enhance the control performance of the ventilation window 5, electric shutters are specially selected to cooperate with the air cooling system for heat exchange.

Further, in order to facilitate the system to monitor the ambient temperature of the outside world and the temperature of the device to be cooled in real time, the system also includes an ambient temperature sensor 10 and a device temperature sensor 11, the ambient temperature sensor 10 is used to detect the ambient temperature of the external environment, the The device temperature sensor 11 is used to detect the device temperature of the belt cooling device 9 .

In order to solve the above technical problems, another technical solution provided by the present invention is:

In conjunction with Fig. 2-Fig. 3, a kind of cooling method, is applied to above-mentioned a kind of hybrid cooling system, is characterized in that, comprises steps:

S1. Obtain the ambient temperature of the external environment and the equipment temperature of the equipment to be cooled;

S2. Calculate the cooling rate according to the equipment temperature obtained in real time;

S3. Increase the operating power of the compressor when it is detected that the cooling rate is lower than the preset cooling rate.

It can be seen from the above description that the beneficial effect of the present invention lies in: based on the same technical idea, the above-mentioned hybrid cooling system is adopted to provide a cooling method. The compressor is controlled to operate at a certain power, and the cooling work is carried out simultaneously with the air-cooled circulation system. However, in order to prevent the equipment from overheating and cooling not in time, the cooling rate of the equipment to be cooled is monitored in real time. If the cooling rate is lower than the preset cooling rate If the speed is high, the compressor is controlled to increase the rotating speed to enhance the cooling effect of the refrigerant circulation system.

Further, the S3 is specifically:

S31. When it is detected that the difference between the equipment temperature and the ambient temperature is lower than the first preset temperature, adjust the compressor to operate at the first preset power;

S32. When it is detected that the difference between the equipment temperature and the ambient temperature is lower than the nth preset temperature, adjust the compressor to operate at the nth preset power; the n-1th preset temperature is greater than the nth preset temperature n preset temperature, the n-1th preset power is less than the nth preset power, the nth preset power is the maximum output power of the compressor, and the n is a positive integer greater than or equal to 2;

S33. In any step of S31-S32, if it is detected that the cooling rate of the device temperature is lower than the preset cooling rate, increase the current m-th preset power of the compressor to the m+1-th preset power, The m is a positive integer greater than or equal to 1 and less than n.

It can be seen from the above description that in steps S31 and S32, the system presets the first preset temperature, the second preset temperature ... the n-1th preset temperature and the nth preset temperature and the first preset power, the second preset Set power...the n-1th preset power and the nth preset power, where the nth preset power is the maximum output power of the compressor, that is, when the compressor reaches the nth preset power, the refrigerant circulation system is full at this time Power operation; at the same time, the preset conditions are met: the n-1th preset temperature is greater than the nth preset temperature, the n-1th preset power is less than the nth preset power, and n is a positive integer greater than or equal to 2.

After the presetting is completed in the system, when the difference between the equipment temperature sensed by the temperature sensor and the ambient temperature is lower than the first preset temperature, the system adjusts the compressor to operate at the first preset power; when the perceived equipment temperature and the environment When the temperature difference is lower than the second preset temperature, the system adjusts the compressor to operate at the second preset power; when it detects that the difference between the equipment temperature and the ambient temperature is lower than the nth preset temperature, adjust The compressor operates according to the nth preset power, that is, each preset temperature has a corresponding preset power, and when the preset temperature is lower than the preset temperature, the compressor operates according to the operate at the preset power.

An example is as follows: the range of the first preset temperature is 14-16°C, the range of the second preset temperature is 9-12°C...the range of the n-1th preset temperature is 5-8°C, the range of the nth preset temperature is The range is 1-4°C, the corresponding first preset power range is 30%-50% of the maximum operating power, the second preset power range is 50%-70% of the maximum operating power, and the n-1 preset The power range is set to be 70%-90% of the maximum operating power, and the nth preset power is the maximum operating power of the compressor.

Preferably, the value of n is 4, the range of the first preset temperature is 14-16°C, the range of the second preset temperature is 9-12°C, the range of the third preset temperature is 5-8°C, the fourth The preset temperature range is 1-4°C, the corresponding first preset power range is 30%-50% of the maximum operating power of the compressor, and the second preset power range is 50%-50% of the maximum operating power of the compressor 70%, the range of the third preset power is 70%-90% of the maximum operating power of the compressor, and the nth preset power is the maximum operating power of the compressor.

More specifically, preferably, the value of n is 4, the first preset temperature is 15°C, the second preset temperature range is 10°C, the third preset temperature range is 6°C, and the fourth preset temperature range is 3°C, the corresponding first preset power is 40% of the maximum operating power of the compressor, the second preset power is 60% of the maximum operating power of the compressor, and the third preset power is 80% of the maximum operating power of the compressor. The fourth preset power is the maximum operating power of the compressor.

At the same time, as described in step S33: in any step of S31-S32, if it is detected that the cooling rate of the equipment temperature is less than the preset cooling rate, the current mth preset power of the compressor is increased to the m+th 1 preset power, the m is a positive integer greater than or equal to 1 and less than n. That is, there is a preset cooling rate in the system. When it is detected that the cooling rate of the device is lower than the preset cooling rate, it indicates that the current cooling effect is not sufficient. To prevent the device from overheating, the compressor is controlled to increase the output power to the current preset power. The preset power of the next gear is as follows: when the environment of the system is 10°C lower than the second preset temperature in the above example, the operating power of the compressor is the second preset power, which is the maximum operating power When it is detected that the cooling rate is less than the preset cooling rate, the operating power of the compressor is controlled to the third preset power, which is 80% of the maximum operating power. If the cooling effect is still not satisfied within the specified time, then Continue to increase the operating power of the compressor until the compressor is fully output. Preferably, the preset temperature drop rate ranges from 0.2-0.5° C./min; specifically, the preset temperature drop rate is 0.3° C./min.

Further, the S33 is specifically:

S331. In any step of S31-S32, if it is detected that the cooling rate of the device temperature is continuously lower than the preset cooling rate within the first preset time length, increase the current mth preset power to the m+1th preset power Assuming power, the m is a positive integer greater than or equal to 1 and less than n;

S332. If it is detected that the cooling rate of the equipment temperature is continuously lower than the preset cooling rate within the first preset time period and the operating power of the compressor is the nth preset power, then control the alarm to send out an alarm.

As can be seen from the above description, in order to prevent the system power from being adjusted too frequently and damage the equipment, a first preset duration is added to the system. operating power. At the same time, an early warning system is added to the system, mainly to prevent the equipment from overheating and the cooling system cannot cool down. The details are as follows: when the actual cooling rate is lower than the preset cooling rate for a long time at the first preset time, and the current compressor has reached The nth preset power, that is, the maximum output power, indicates that even if the entire cooling system cannot complete the cooling of the equipment at this time, the alarm will send out an early warning to remind the relevant staff to deal with it. Preferably, the range of the first preset duration is 2-4 minutes, and specifically preferably, the range of the first preset duration is 3 minutes.

Further, step S4 is also included, the step S4 is located after the step S3, and the step S4 is specifically:

S4. When it is detected that the difference between the equipment temperature and the ambient temperature is less than or equal to the nth preset temperature, control the ventilation window to close and control the compressor to operate at the nth preset power.

Further, step S0 is also included, the step S0 is located before the step S1, and the step S0 is specifically:

S0. When it is detected that the difference between the device temperature and the ambient temperature is greater than or equal to a first preset temperature, control the compressor to be turned off and the ventilation window to be opened.

It can be seen from the above description that according to step S4, when it is detected that the difference between the equipment temperature and the ambient temperature is less than or equal to the nth preset temperature, the ventilation window is closed and the compressor operates at the maximum output power. At this time, the air cooling cycle The system is shut down, and the refrigerant circulation system operates independently. The purpose is that when the difference between the equipment temperature and the ambient temperature is less than or equal to the nth preset temperature, the ambient temperature and the equipment temperature are relatively close at this time, and the cooling effect obtained from the external environment Limited, or even unable to achieve cooling effect, so the ventilation window is closed, and the refrigerant circulation system runs alone.

At the same time, according to step S0, when it is detected that the difference between the equipment temperature and the ambient temperature is greater than or equal to the first preset temperature, the compressor is controlled to be turned off and the ventilation window is controlled to be opened. At this time, the refrigerant circulation system is closed, and the air-cooling circulation system operates independently. The purpose is that when the difference between the equipment temperature and the ambient temperature is greater than or equal to the first preset temperature, the difference between the equipment temperature and the ambient temperature is relatively large. , that is, the temperature difference is large, and the required cooling effect can be achieved only through heat exchange from the external environment, so the compressor is turned off, and the air-cooled circulation system runs alone.

Embodiment one of the present invention is:

Please refer to Fig. 1, a kind of mixed type cooling system, it is characterized in that: comprise refrigerant cycle system and air-cooled cycle system; Refrigerant cycle includes condenser, compressor, evaporator and expansion valve, condenser, expansion valve, evaporator The condenser and the compressor are sequentially closed-loop connected through pipelines, the condenser is provided with a condensing fan, and the evaporator is provided with a cooling fan; the air-cooled circulation system includes an electric shutter door, an evaporator, a cooling fan, and a cooling fan Cooperate with the electric louver door for ventilation; the air-cooled circulation system also includes a dust-proof device, the dust-proof device is located inside the ventilation window, specifically, the dust-proof device is a filter cotton dust-proof net. The cooling system also includes an ambient temperature sensor and an equipment compartment temperature sensor. The ambient temperature sensor is used to detect the ambient temperature of the external environment, and the equipment compartment temperature sensor is used to detect the equipment temperature of the equipment to be cooled. The specific equipment to be cooled is electrical equipment.

The working principle of this embodiment is as follows: first, the condenser, compressor, evaporator and expansion valve are sequentially connected in a closed loop to form a refrigerant cycle, that is, a general refrigeration cycle. The device realizes the air cooling of the equipment to be cooled through the cooling fan; secondly, the electric shutter door, evaporator and cooling fan form an air cooling cycle. Open the electric louver door, and under the action of the cooling fan, use the external air and internal hot air for heat exchange; finally, according to the system regulation, the two systems can run in parallel or independently to cool the equipment to be cooled.

Embodiment two of the present invention is:

Please refer to Figure 2, a cooling method applied to a hybrid cooling system in the first embodiment above, characterized in that it includes the steps:

S1. Obtain the ambient temperature of the external environment and the equipment temperature of the equipment to be cooled;

S2. Calculate the cooling rate according to the equipment temperature obtained in real time;

S3. When it is detected that the cooling rate is lower than the preset cooling rate, increase the rotation speed of the compressor.

That is to say, in this embodiment, based on the same technical idea, the above-mentioned hybrid cooling system is adopted to provide a cooling method, the purpose of which is to save electric energy and reduce the noise generated by the operation of the compressor. The main idea is: the refrigerant circulation system The compressor in the compressor is controlled to operate at a certain power, and it performs cooling work at the same time as the air-cooled circulation system. However, in order to prevent the equipment from overheating and cooling not in time, the cooling rate of the equipment to be cooled is monitored in real time. If the cooling rate is less than the preset The cooling rate is controlled to increase the rotation speed of the compressor to enhance the cooling effect of the refrigerant circulation system.

Embodiment three of the present invention is:

Please refer to Figure 3, on the basis of Embodiment 2, S3 is specifically:

S31. When it is detected that the difference between the equipment temperature and the ambient temperature is lower than the first preset temperature, adjust the compressor to operate at the first preset power;

S32. When it is detected that the difference between the equipment temperature and the ambient temperature is lower than the nth preset temperature, adjust the compressor to operate according to the nth preset power; the n-1th preset temperature is greater than the nth preset temperature, and the n-th preset temperature 1 The preset power is less than the nth preset power, the nth preset power is the maximum output power of the compressor, and n is a positive integer greater than or equal to 2;

S33. In any step of S31-S32, if it is detected that the cooling rate of the equipment temperature is less than the preset cooling rate, increase the current m-th preset power of the compressor to the m+1-th preset power, where m is greater than or equal to 1 and a positive integer less than n.

That is, in this embodiment, the system presets the first preset temperature, the second preset temperature...the n-1th preset temperature and the nth preset temperature and the first preset power, the second preset power...the first n-1 preset power and nth preset power, wherein the nth preset power is the maximum output power of the compressor, that is, when the compressor reaches the nth preset power, the refrigerant circulation system is running at full power at this time; at the same time Presets satisfy: the n-1th preset temperature is greater than the nth preset temperature, the n-1th preset power is less than the nth preset power, and n is a positive integer greater than or equal to 2. After the preset is completed in the system, when the difference between the equipment temperature sensed by the temperature sensor and the ambient temperature is lower than the first preset temperature, the system adjusts the compressor to operate at the first preset power; When the temperature difference is lower than the second preset temperature, the system adjusts the compressor to operate according to the second preset power; when it detects that the difference between the equipment temperature and the ambient temperature is lower than the nth preset temperature, adjust The compressor operates according to the nth preset power, that is, each preset temperature has a corresponding preset power, and when the preset temperature is lower than the preset temperature, the compressor operates according to the operate at the preset power.

Preferably, the value of n is 4, the first preset temperature is 15°C, the second preset temperature range is 10°C, the third preset temperature range is 6°C, and the fourth preset temperature range is 3°C , the corresponding first preset power is 40% of the maximum operating power of the compressor, the second preset power is 60% of the maximum operating power of the compressor, the third preset power is 80% of the maximum operating power of the compressor, and the fourth The preset power is the maximum operating power of the compressor.

At the same time, as described in step S33: in any step of S31-S32, if it is detected that the cooling rate of the equipment temperature is less than the preset cooling rate, increase the current m preset power of the compressor to the m+1 preset power. Assuming power, the m is a positive integer greater than or equal to 1 and less than n. That is, there is a preset cooling rate in the system. When it is detected that the cooling rate of the device is lower than the preset cooling rate, it indicates that the current cooling effect is not sufficient. To prevent the device from overheating, the compressor is controlled to increase the output power to the current preset power. The preset power of the next gear is as follows: when the environment of the system is 10°C lower than the second preset temperature in the above example, the operating power of the compressor is the second preset power, that is, the maximum operating power 60%, when it is detected that the cooling rate is less than the preset cooling rate, then control the operating power of the compressor to the third preset power, which is 80% of the maximum operating power, if the cooling effect is still not satisfied within the specified time, continue Increase the operating power of the compressor until the compressor is fully output. Preferably, the preset cooling rate is 0.3°C/min.

Embodiment four of the present invention is:

Please refer to Figure 3, on the basis of Embodiment 3, S33 is specifically:

S331. In any step of S31-S32, if it is detected that the cooling rate of the device temperature is continuously lower than the preset cooling rate within the first preset duration, increase the current m-th preset power to the m+1-th preset power , m is a positive integer greater than or equal to 1 and less than 4;

S332. If it is detected that the cooling rate of the equipment temperature is continuously lower than the preset cooling rate within the first preset time period and the operating power of the compressor is the fourth preset power, control the alarm to send out an alarm.

That is, in this embodiment, in order to prevent the system power from being adjusted too frequently and damage the equipment, a first preset duration is added to the system, and the first preset duration is taken as 3 minutes. When the actual cooling rate is continuously lower than the preset cooling rate within 3 minutes, the operating power of the compressor is increased. At the same time, an early warning system is added in the system, mainly to prevent the equipment from overheating and the cooling system cannot cool down. The details are as follows: when the actual cooling rate is continuously lower than the preset cooling rate within 3 minutes, and the current compressor has reached the fourth preset power , which is the maximum output power, indicates that even if the entire cooling system cannot complete the cooling of the equipment at this time, the alarm will send out an early warning to remind the relevant staff to deal with it.

Embodiment five of the present invention is:

Please refer to Fig. 3, on the basis of the fourth embodiment, it also includes step S0 and step S4, step S0 is located before step S1, and step S4 is located after step S3;

Step S0 is specifically: when it is detected that the difference between the equipment temperature and the ambient temperature is greater than or equal to the first preset temperature, controlling the compressor to be turned off and the ventilation window to be opened.

Step S4 is specifically: when it is detected that the difference between the equipment temperature and the ambient temperature is less than or equal to the fourth preset temperature, control the ventilation window to close and control the compressor to operate at the fourth preset power.

That is, in this embodiment, according to step S0, when it is detected that the difference between the equipment temperature and the ambient temperature is greater than or equal to the first preset temperature, the compressor is controlled to be turned off and the ventilation window is controlled to be opened. At this time, the refrigerant circulation system is closed, and the air-cooling circulation system operates independently. The purpose is that when the difference between the equipment temperature and the ambient temperature is greater than or equal to the first preset temperature, the difference between the equipment temperature and the ambient temperature is relatively large. , that is, the temperature difference is large, and the required cooling effect can be achieved only through heat exchange from the external environment, so the compressor is turned off, and the air-cooled circulation system runs alone.

At the same time, as described in step S4, when it is detected that the difference between the equipment temperature and the ambient temperature is less than or equal to the nth preset temperature, the ventilation window is closed and the compressor operates according to the maximum output power. At this time, the air cooling circulation system is closed. The refrigerant circulation system operates independently, and its purpose is that when the difference between the equipment temperature and the ambient temperature is less than or equal to the nth preset temperature, the ambient temperature is relatively close to the equipment temperature at this time, and the cooling effect obtained from the external environment is limited, or even The cooling effect cannot be achieved, so the ventilation window is closed, and the refrigerant circulation system runs alone.

To sum up, the present invention provides a hybrid cooling system and cooling method. An air-cooling circulation system is provided, which uses the temperature difference between the outside world and the equipment to be cooled to perform heat exchange under the action of the air-cooling system; at the same time, a refrigerant The circulation system uses the compressor to do work to dissipate heat from the cooling equipment. The two systems can operate independently or jointly. In addition, according to the real-time detected temperature, the cooperation mode of the two systems can be precisely adjusted, which can reduce energy consumption and reduce energy consumption. Reduce noise.

The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in related technical fields, are all included in the same principle. Within the scope of patent protection of the present invention.

Claims (10)

1. A hybrid cooling system characterized by: comprises a refrigerant circulation system and an air cooling circulation system;

the refrigerant circulation system comprises a condenser, a compressor, an evaporator and an expansion valve, wherein the condenser, the expansion valve, the evaporator and the compressor are sequentially connected in a closed loop through pipelines, a condensing fan is arranged on the condenser, and a cooling fan is arranged on the evaporator;

the air cooling circulation system comprises a ventilation window, the evaporator and the cooling fan, and the cooling fan is matched with the ventilation window to perform ventilation.

2. A hybrid cooling system according to claim 1, characterized in that: the air cooling circulation system further comprises a dustproof device, and the dustproof device is arranged on the inner side of the ventilation window.

3. A hybrid cooling system according to claim 2, characterized in that: the dustproof device is a filter cotton dustproof net.

4. A hybrid cooling system according to claim 1, characterized in that: the ventilation window is an electric shutter door.

5. A hybrid cooling system according to claim 1, characterized in that: the cooling system further comprises an environment temperature sensor and a device temperature sensor, wherein the environment temperature sensor is used for detecting the environment temperature of the external environment, and the device temperature sensor is used for detecting the device temperature of the device to be cooled.

6. A cooling method applied to a hybrid cooling system according to any one of claims 1 to 5, comprising the steps of:

s1, acquiring the ambient temperature of the external environment and the equipment temperature of equipment to be cooled;

s2, calculating a cooling rate according to the equipment temperature obtained in real time;

and S3, when the detected cooling rate is smaller than the preset cooling rate, the operation power of the compressor is increased.

7. A cooling method according to claim 6, wherein S3 is specifically:

s31, when the difference between the equipment temperature and the environment temperature is detected to be lower than the 1 st preset temperature, the compressor is adjusted to operate according to the 1 st preset power;

s32, when the difference between the equipment temperature and the environment temperature is detected to be lower than an nth preset temperature, adjusting the compressor to operate according to the nth preset power; the preset temperature of the n-1 th is larger than the preset temperature of the n-1 th, the preset power of the n-1 th is smaller than the preset power of the n-th, the preset power of the n-th is the maximum output power of the compressor, and the n is a positive integer larger than or equal to 2;

and S33, in any step of S31-S32, if the cooling rate of the equipment temperature is detected to be smaller than the preset cooling rate, the current mth preset power of the compressor is increased to be the mth+1th preset power, and m is a positive integer which is larger than or equal to 1 and smaller than n.

8. The cooling method according to claim 7, wherein S33 is specifically:

s331, in any step of S31-S32, if the detected cooling rate of the equipment temperature is continuously smaller than the preset cooling rate in a first preset duration, the current mth preset power is increased to the mth+1th preset power, wherein m is a positive integer which is greater than or equal to 1 and smaller than n;

and S332, if the detected cooling rate of the equipment temperature is continuously smaller than the preset cooling rate within the first preset duration and the running power of the compressor is the nth preset power, controlling an alarm to give an alarm.

9. The cooling method according to claim 8, further comprising a step S4, wherein the step S4 is located after the step S3, and the step S4 is specifically:

and S4, when the difference value between the equipment temperature and the ambient temperature is detected to be less than or equal to the nth preset temperature, closing the ventilation window and controlling the compressor to operate according to the nth preset power.

10. The cooling method according to claim 6, further comprising a step S0, wherein the step S0 is located before the step S1, and the step S0 is specifically:

s0, when the difference value between the equipment temperature and the environment temperature is detected to be more than or equal to a first preset temperature, the compressor is controlled to be closed, and the ventilation window is controlled to be opened.