Machine room refrigeration system and refrigeration method

Abstract

The invention relates to a machine room refrigerating system and a refrigerating method. A water collecting tank is communicated with a water inlet of a water-fluorine heat exchanger through a circulating water pump, and a water outlet of the water-fluorine heat exchanger is communicated with a water inlet of a rectangular sprayer through a spraying water pump; refrigerant between the indoor equipment and the outdoor equipment circulates, an inlet of the water-fluorine heat exchanger is communicated with an exhaust port of the compressor, an outlet of the water-fluorine heat exchanger is communicated with an inlet of the dry cooler, and an outlet of the dry cooler is communicated with an inlet of the evaporator through a fluorine pump and an electronic expansion valve. According to the technical scheme, besides the dry cooler, the water-fluorine heat exchanger and the four air-water heat exchangers are further installed in the outdoor machine case, the water-fluorine heat exchanger can firstly reduce the temperature of a refrigerant, then the temperature of the refrigerant is further reduced through the dry cooler, and meanwhile the air-water heat exchangers are further reduced through the air-water heat exchangers. The spraying assembly can cool the heat transferred to water by the water-fluorine heat exchanger through the four air-water heat exchangers. Therefore, the refrigerant evaporation temperature of the machine room can be further reduced, and the cooling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of computer room refrigeration, and in particular to a computer room refrigeration system and a refrigeration method. Background Art

[0002] There are a large number of electronic devices such as servers and storage devices in the computer room. These devices generate a lot of heat during operation. If the temperature in the computer room is too high, the performance of the equipment will be reduced. When the temperature exceeds the allowable operating temperature range of the equipment, the efficiency of electronic components will be reduced, signal transmission delays may increase, and even equipment failures may occur. Therefore, efficient cooling methods are needed to ensure the stable operation of the equipment.

[0003] Air conditioners are currently used to cool the computer room temperature, but the cooling method of air conditioners is generally to cool through dry coolers, and the cooling efficiency is limited. Summary of the invention

[0004] Therefore, it is necessary to provide a computer room refrigeration system and a refrigeration method, which are used to solve the technical problem that the cooling method of air conditioners generally uses dry coolers to cool down, but the cooling efficiency is limited.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a computer room cooling system, comprising: Indoor equipment, the indoor equipment includes an indoor chassis and an evaporating fan, an evaporator and a compressor installed in the indoor chassis, the air outlet of the evaporating fan is in communication with the evaporator, and the outlet of the evaporator is in communication with the air inlet of the compressor; Outdoor equipment, the outdoor equipment includes an outdoor chassis, four air-water heat exchangers, two dry coolers, a condensing fan, a spray assembly, a water collection tank, a water-fluorine heat exchanger, a circulating water pump and a fluorine pump. The four air-water heat exchangers are installed on the four sides of the outdoor chassis respectively. The air inlet of the air-water heat exchanger is in circulation with the external air. The two dry coolers are installed in a V shape in the middle of the outdoor chassis. A condensing fan is installed on the top of the outdoor chassis above the dry cooler. The air outlet of the condensing fan is in circulation with the external air. The spray assembly is installed in the outdoor chassis. The spray assembly includes a spray support A bracket, a rectangular sprinkler and a sprinkler water pump are installed in the outdoor cabinet. The sprinkler bracket is installed on the sprinkler bracket. The rectangular sprinkler is located directly above the fins of the four air-water heat exchangers, and the nozzle of the rectangular sprinkler is aimed at the fins of the four air-water heat exchangers. The water collecting tank and the water-fluorine heat exchanger are installed at the bottom of the outdoor cabinet. The water collecting tank is located directly below the fins of the four air-water heat exchangers. The water collecting tank is connected to the water inlet of the water-fluorine heat exchanger through a circulating water pump, and the water outlet of the water-fluorine heat exchanger is connected to the water inlet of the rectangular sprinkler through a sprinkler water pump. Among them, the refrigerant circulates between the indoor equipment and the outdoor equipment, the inlet of the water-fluorine heat exchanger is connected to the exhaust port of the compressor, the outlet of the water-fluorine heat exchanger is connected to the inlet of the dry cooler, the outlet of the dry cooler is connected to the inlet of the electronic expansion valve through the fluorine pump, and the outlet of the electronic expansion valve is connected to the inlet of the evaporator.

[0006] Preferably, the outdoor device further comprises a first cleaning component, which comprises a wind sensor, a cleaning tank and a control valve; The wind sensor is installed in the middle of the outdoor cabinet, and the detection end of the wind sensor is aligned with the fins of the air-water heat exchanger; The cleaning tank is filled with cleaning agent, and the water outlet of the cleaning tank is connected with the water collecting tank through a control valve, and the control valve is communicatively connected with the wind sensing sensor.

[0007] Preferably, the first cleaning component also includes a first high-pressure water gun and a first high-pressure water pump. The first high-pressure water gun is installed in the middle of the outdoor chassis. The water inlet of the first high-pressure water gun is connected to the water collection tank through the first high-pressure water pump. The nozzle of the first high-pressure water gun is aimed at the fins of the air-water heat exchanger, and the first high-pressure water pump is communicatively connected to the wind sensor.

[0008] Preferably, the outdoor equipment also includes a second cleaning component, which includes a second high-pressure water gun and a second high-pressure water pump. The second high-pressure water gun is installed on the side inside the outdoor chassis. The water inlet of the second high-pressure water gun is connected to the water collecting tank through the second high-pressure water pump, and the nozzle of the second high-pressure water gun is aimed at the dry cooler.

[0009] Preferably, the second cleaning component also includes two groups of linear modules, a cleaning roller and a cleaning motor. The two groups of linear modules are respectively installed at an angle at the front end and the rear end of the dry cooler, and the inclination angle is consistent with the inclination angle of the dry cooler. The two groups of linear modules move synchronously, and the front end and the rear end of the cleaning roller are respectively rotatably installed on the sliders of the two groups of linear modules. The output end of the cleaning motor is connected to the cleaning roller, and the two groups of linear modules and the cleaning motor are respectively communicated with the second high-pressure water pump.

[0010] Preferably, the computer room refrigeration system further includes a control device, which is communicatively connected with the indoor device and the outdoor device respectively.

[0011] Preferably, the indoor device further comprises a first one-way valve, and the first one-way valve is connected in parallel with the compressor.

[0012] Preferably, the outdoor device further comprises a second one-way valve, and the second one-way valve is connected in parallel with the fluorine pump.

[0013] Preferably, the outdoor equipment also includes a float valve and a water inlet pipe. The float valve is installed on the water inlet pipe and is located in the water collecting tank. The water inlet of the water inlet pipe is used to communicate with the external water inlet equipment, and the water outlet of the water inlet pipe is connected to the water collecting tank.

[0014] To achieve the above object, in a second aspect, the inventor provides a computer room cooling method, including any computer room cooling system provided by the inventor above, and further comprising the following steps: S01: The refrigerant first passes through the evaporator for heat exchange to reduce the temperature inside the room; S02: After heat exchange in the evaporator, the low-temperature and low-pressure refrigerant gas is compressed by the compressor to become a high-temperature and high-pressure refrigerant gas; S03: The high-temperature and high-pressure refrigerant compressed by the compressor is cooled by the water-fluorine heat exchanger, and the heat is transferred to the water flowing in from the water collection tank. The heated water then passes through the air-water heat exchanger to transfer the heat of the water to the air, and the hot air is blown out of the outside through the condensing fan; S04: After the refrigerant has been cooled by the water-fluorine heat exchanger, it is further cooled by the dry cooler, and the heat is transferred to the air, and the hot air is blown out through the condensing fan; S05: After cooling down in the water-fluorine heat exchanger and the dry cooler, the refrigerant flows through the electronic expansion valve and is throttled to the evaporator for heat exchange; S06: Repeat steps S02 to S05.

[0015] Different from the prior art, the technical solution of the present application is to install a water-fluorine heat exchanger and four air-water heat exchangers in addition to the dry cooler in the outdoor box. The water-fluorine heat exchanger can first reduce the temperature of the refrigerant, and then further reduce the temperature of the refrigerant through the dry cooler. At the same time, the spray assembly can transfer the heat transferred to the water by the water-fluorine heat exchanger through the four air-water heat exchangers to cool it down, so that the heat of the water and the heat of the refrigerant are finally discharged to the outside through the condensing fan. In this way, the condensation temperature of the refrigerant can be further reduced, thereby reducing the evaporation temperature of the evaporator and improving the heat exchange efficiency. In addition, cooling by heat exchange with the outside air can reduce energy consumption and achieve energy-saving effects.

[0016] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0018] In the drawings of the specification: Figure 1This is a schematic diagram of the principle of the computer room cooling system in this application; Figure 2 is a cross-sectional view of the outdoor equipment in this application; Figure 3 It is a schematic diagram of the structure of the outdoor equipment in this application; Figure 4 It is a schematic diagram of the internal structure of the outdoor equipment in this application; Figure 5 This is the front view of the outdoor equipment in this application; Figure 6 for Figure 5 Sectional view of AA in the middle; Figure 7 for Figure 5 Cross-sectional view of the middle BB; Figure 8 This is a schematic diagram of the structure in which a linear module, a cleaning roller and a cleaning motor are installed on the dry cooler in this application.

[0019] The reference numerals in the above drawings are described as follows: 100-computer room refrigeration system; 1-indoor equipment; 11-evaporation fan; 12-evaporator; 13-compressor; 14-first check valve; 2-outdoor equipment; 21-outdoor chassis; 22-air-water heat exchanger; 231-dry cooler; 232-condensing fan; 24-spraying assembly; 241-spraying bracket; 242-rectangular sprayer; 243-spraying water pump; 25-water collecting tank; 26-water-fluorine heat exchanger; 271-circulating water pump; 272-fluorine pump; 273-second one-way valve; 274-electronic expansion valve; 275-float valve; 276-water inlet pipe; 28-first cleaning component; 281-wind sensor; 282-cleaning tank; 283-first high-pressure water gun; 284-first high-pressure water pump; 29-second cleaning component; 291-second high-pressure water gun; 292-second high-pressure water pump; 293-linear module; 294-cleaning roller; 295-cleaning motor. DETAILED DESCRIPTION

[0020] According to some embodiments of the present application, please refer to Figures 1 to 7The present invention provides a computer room refrigeration system 100, including an indoor device 1 and an outdoor device 2. The indoor device 1 includes an indoor chassis and an evaporating fan 11, an evaporator 12 and a compressor 13 installed in the indoor chassis. The air outlet of the evaporating fan 11 is in communication with the evaporator 12, and the outlet of the evaporator 12 is in communication with the air inlet of the compressor 13; the outdoor device 2 includes an outdoor chassis 21, four air-water heat exchangers 22, two dry coolers 231, a condensing fan 232, a spray assembly 24, a water collection tank 25, a water-fluorine heat exchanger 26, A circulating water pump 271, a fluorine pump 272 and an electronic expansion valve 274, four air-water heat exchangers 22 are respectively installed on the four sides of the outdoor machine box 21, and the air inlet of the air-water heat exchanger 22 is in circulation with the external air. Two dry coolers 231 are installed in a V shape in the middle of the outdoor machine box 21. A condensing fan 232 is installed on the top of the outdoor machine box 21 above the dry cooler 231, and the air outlet of the condensing fan 232 is in circulation with the external air. A spray assembly 24 is installed in the outdoor machine box 21, and the spray assembly 24 includes a spray bracket 241, a rectangular The sprinkler 242 and the sprinkler water pump 243, the sprinkler bracket 241 are installed at the bottom of the outdoor cabinet 21, the rectangular sprinkler 242 is installed on the sprinkler bracket 241, the rectangular sprinkler 242 is located directly above the fins of the four air-water heat exchangers 22, and the nozzle of the rectangular sprinkler 242 is aimed at the fins of the four air-water heat exchangers 22, the water collection tank 25 and the water-fluorine heat exchanger 26 are installed at the bottom of the outdoor cabinet 21, the water collection tank 25 is located directly below the fins of the four air-water heat exchangers 22, and the water collection tank 25 is connected to the water-fluorine heat exchanger 26 through the circulating water pump 271. The water inlet of the heat exchanger 26 is connected, and the water outlet of the water-fluorine heat exchanger 26 is connected to the water inlet of the rectangular sprayer 242 through the spray water pump 243; wherein, the refrigerant circulates between the indoor equipment 1 and the outdoor equipment 2, the inlet of the water-fluorine heat exchanger 26 is connected to the exhaust port of the compressor 13, the outlet of the water-fluorine heat exchanger 26 is connected to the inlet of the dry cooler 231, the outlet of the dry cooler 231 is connected to the inlet of the electronic expansion valve 274 through the fluorine pump 272, and the outlet of the electronic expansion valve 274 is connected to the inlet of the evaporator 12.

[0021] The indoor device 1 is a traditional indoor device 1. The evaporating fan 11 can promote the flow of air so that the air passing through the evaporator 12 can be more evenly distributed in the space that needs to be cooled. At the same time, the evaporating fan 11 and the evaporator 12 can cooperate to reduce the energy consumption of the computer room air conditioning system. When the temperature of the computer room is not particularly high, the evaporating fan 11 can first perform preliminary cooling to reduce the frequency and duration of starting the evaporator 12.

[0022] The outdoor cabinet 21 is a rectangular parallelepiped, and four air-water heat exchangers 22 , two dry coolers 231 , a condensing fan 232 , a water collecting tank 25 , a water-fluorine heat exchanger 26 , a circulating water pump 271 , a spray assembly 24 and a fluorine pump 272 are integrated and installed in the outdoor cabinet 21 .

[0023] The four air-water heat exchangers 22 are detachably mounted on the four sides (i.e., the front, rear, left, and right) of the outdoor housing 21 and can be detachably mounted by bolts. The air inlets of the four air-water heat exchangers 22 are in communication with the outside air, and the fins of the four air-water heat exchangers 22 are located inside the outdoor housing 21.

[0024] Two dry coolers 231 are installed in a V-shape in the middle of the outdoor cabinet 21. Figure 4 , Figure 6 and Figure 7 As shown, two dry coolers 231 are installed on the two sides of the middle part of the outdoor case 21, and the front and rear of the two dry coolers 231 are connected by a first V-shaped baffle. Optionally, an electric control box is installed on the first V-shaped baffle. In some embodiments, two dry coolers 231 are installed on the front and rear of the middle part of the outdoor case 21, and the two sides of the two dry coolers 231 are connected by a second V-shaped baffle.

[0025] The air inlet of the condensing fan 232 is in communication with the interior of the outdoor cabinet 21, and the air outlet of the condensing fan 232 is in communication with the outside air. The condensing fan 232 exchanges the air in the outdoor cabinet 21 with the outside air.

[0026] The water collecting tank 25 is installed at the bottom of the outdoor case 21. The water collecting tank 25 is rectangular and completely covers the bottom of the outdoor case 21. The water-fluorine heat exchanger 26 is installed in the outdoor case 21 through a mounting bracket and is located between the water collecting tank 25 and the two dry coolers 231. The water inlet of the water-fluorine heat exchanger 26 is connected to the water collecting tank 25 through a circulating water pump 271, and the water outlet of the water-fluorine heat exchanger 26 is connected to the spray assembly 24.

[0027] The spray assembly 24 is used in conjunction with four air-water heat exchangers 22. The four air-water heat exchangers 22 cool down the water after heat exchange by the water-fluorine heat exchanger 26, and the cooled water flows back to the water collection tank 25 for reuse. The spray assembly 24 includes a spray bracket 241, a rectangular sprayer 242, and a spray water pump 243. The spray bracket 241 is installed on the outdoor box 21. Specifically, the bottom of the spray bracket 241 is installed on the frame of the outdoor box 21, and the top of the spray bracket 241 is used to support the rectangular sprayer 242. Optionally, at least one spray bracket 241 is provided on each surface of the rectangular sprayer 242 to enhance the stability of the rectangular sprayer 242. The shape of the rectangular sprayer 242 corresponds to the four air-water heat exchangers 22, and the four surfaces of the rectangular sprayer 242 correspond to the four air-water heat exchangers 22, thereby ensuring that each air-water heat exchanger 22 can work normally. Therefore, it is necessary to set a rectangular sprayer 242 directly above the fins of the four air-water heat exchangers 22, and the nozzle of the rectangular sprayer 242 is aimed at the fins of the four air-water heat exchangers 22. The spray water pump 243 pumps the water flowing out of the water outlet of the water-fluorine heat exchanger 26 to the rectangular sprayer 242, and the nozzle on the rectangular sprayer 242 sprays the water to the fins of the four air-water heat exchangers 22, thereby exchanging the heat of the water to the air, and the air is then discharged through the condensing fan 232.

[0028] The electronic expansion valve 274 accurately adjusts the opening according to parameters such as the temperature, pressure and refrigeration load at the outlet of the evaporator 12, controls the flow of refrigerant entering the evaporator 12, and enables the evaporator 12 to operate under the best working conditions to achieve efficient refrigeration.

[0029] In addition to the dry cooler 231, the technical solution of the present application also installs a water-fluorine heat exchanger 26 and four air-water heat exchangers 22 in the outdoor box 21. The water-fluorine heat exchanger 26 can first reduce the temperature of the refrigerant, and then further reduce the temperature of the refrigerant through the dry cooler 231. At the same time, the spray component 24 can transfer the heat transferred to the water by the water-fluorine heat exchanger 26 through the four air-water heat exchangers 22 to cool it down, so that the heat of the water and the heat of the refrigerant are finally discharged to the outside through the condensing fan 232. In this way, the condensation temperature of the refrigerant can be further reduced, thereby reducing the evaporation temperature of the evaporator 12 and improving the heat exchange efficiency. In addition, cooling by heat exchange with the outside air can reduce energy consumption and achieve energy-saving effects.

[0030] like Figure 2As shown, the outdoor device 2 also includes a first cleaning component 28, which includes a wind sensor 281, a cleaning tank 282 and a control valve; the wind sensor 281 is installed in the middle of the outdoor chassis 21, and the detection end of the wind sensor 281 is aligned with the fins of the air-water heat exchanger 22; the cleaning tank 282 is filled with cleaning agent, and the water outlet of the cleaning tank 282 is connected to the water collection tank 25 through the control valve, and the control valve is communicated with the wind sensor 281.

[0031] The cleaning tank 282 and the fluorine pump 272 are installed in the outdoor cabinet 21 through a mounting frame, the cleaning tank 282 is installed at the bottom of the mounting frame, and the fluorine pump 272 is installed at the top of the mounting frame.

[0032] The wind sensor 281 is a device that can sense the speed and direction of air flow. The wind sensor 281 is used to detect the air flow rate of the air-water heat exchanger 22. When the wind sensor 281 detects that the air flow rate of the air-water heat exchanger 22 is lower than the preset flow rate, it means that the fins of the air-water heat exchanger 22 need to be cleaned. At this time, the control valve is opened to allow the cleaning agent in the cleaning tank 282 to flow into the water collection tank 25. The water in the water collection tank 25 passes through the water-fluorine heat exchanger 26 and is sprayed to the fins of the four air-water heat exchangers 22 by the rectangular sprayer 242, thereby cleaning the fins of the air-water heat exchanger 22 until the wind sensor 281 detects that the air flow rate of the air-water heat exchanger 22 is higher than or equal to the preset flow rate. Among them, one or more wind sensors 281 can be set, and one of the air-water heat exchangers 22 can be detected, or four wind sensors 281 can be set, each corresponding to one air-water heat exchanger 22. As long as the air flow rate of one air-water heat exchanger 22 is lower than the preset flow rate, the control valve is started. In some embodiments, the control valve may be set to open periodically. At the same time, a liquid inlet is provided on the cleaning tank 282 to periodically replenish the cleaning agent.

[0033] like Figure 2 As shown, the first cleaning component 28 also includes a first high-pressure water gun 283 and a first high-pressure water pump 284. The first high-pressure water gun 283 is installed in the middle of the outdoor chassis 21. The water inlet of the first high-pressure water gun 283 is connected to the water collecting tank 25 through the first high-pressure water pump 284. The nozzle of the first high-pressure water gun 283 is aimed at the fins of the air-water heat exchanger 22, and the first high-pressure water pump 284 is communicated with the wind sensor 281.

[0034] In order to further enhance the cleaning effect of the fins of the air-water heat exchanger 22, a first high-pressure water gun 283 is provided. The first high-pressure water gun 283 is mainly aimed at the upper part of the fins of the air-water heat exchanger 22, and the first high-pressure water gun 283 is equipped with a rotating nozzle so that the water spray can cover a larger area. Optionally, each air-water heat exchanger 22 corresponds to a first high-pressure water gun 283 and a first high-pressure water pump 284. In actual use, when the wind sensor 281 detects that the air flow rate of the air-water heat exchanger 22 is lower than the preset flow rate, the control valve and the first high-pressure water pump 284 are controlled to open.

[0035] like Figure 2 As shown, the outdoor device 2 also includes a second cleaning component 29, which includes a second high-pressure water gun 291 and a second high-pressure water pump 292. The second high-pressure water gun 291 is installed on the side of the outdoor chassis 21. The water inlet of the second high-pressure water gun 291 is connected to the water collecting tank 25 through the second high-pressure water pump 292, and the nozzle of the second high-pressure water gun 291 is aimed at the dry cooler 231.

[0036] The air inlet of the dry cooler 231 is in communication with the outdoor case 21, and the air outlet of the dry cooler 231 is in communication with the condensing fan 232. The dry cooler 231 mainly exchanges heat with the refrigerant through air, and it is necessary to ensure that the air inlet of the dry cooler 231 is not blocked. Therefore, a second high-pressure water gun 291 and a second high-pressure water pump 292 are provided, and the second high-pressure water pump 292 can be set to open and clean the air inlet of the dry cooler 231 regularly. Among them, the second high-pressure water gun 291 is equipped with a rotating nozzle so that the water spray can cover a larger area. Optionally, each dry cooler 231 corresponds to a second high-pressure water gun 291 and a second high-pressure water pump 292.

[0037] like Figure 2 and Figure 8 As shown, the second cleaning component 29 also includes two groups of linear modules 293, a cleaning roller 294 and a cleaning motor 295. The two groups of linear modules 293 are respectively installed at an angle at the front end and the rear end of the dry cooler 231, and the inclination angle is consistent with the inclination angle of the dry cooler 231. The two groups of linear modules 293 move synchronously, and the front end and the rear end of the cleaning roller 294 are respectively rotatably installed on the sliders of the two groups of linear modules 293. The output end of the cleaning motor 295 is connected to the cleaning roller 294, and the two groups of linear modules 293 and the cleaning motor 295 are respectively communicated with the second high-pressure water pump 292.

[0038] The linear module 293 is an existing linear module 293, and a screw linear module 293 is used in this embodiment. When the two sets of linear modules 293 are installed, they are tilted along the tilt angle of the dry cooler 231 and are located at both ends of the dry cooler 231. The cleaning roller 294 is an existing cleaning roller 294, and the cleaning motor 295 drives the cleaning roller 294 to rotate. At the same time, the linear module 293 drives the cleaning roller 294 to reciprocate on the air inlet of the dry cooler 231. Optionally, each dry cooler 231 corresponds to two sets of linear modules 293, cleaning rollers 294 and cleaning motors 295. In actual use, the second high-pressure water pump 292, the two sets of linear modules 293 and the cleaning motor 295 are controlled to start at the same time. When the second high-pressure water pump 292 sprays water, the cleaning roller 294 is cleaned synchronously, which further improves the cleaning effect of the air inlet of the dry cooler 231.

[0039] The computer room refrigeration system 100 also includes a control device, which is respectively connected to the indoor device 1 and the outdoor device 2 in communication. The control device is used to monitor and control the operating state of the computer room refrigeration system 100, including monitoring and adjusting parameters such as temperature, humidity, wind speed, and water circulation flow. In actual use, the control device can intelligently switch between the three working modes of natural cooling, evaporative cooling, and mechanical refrigeration according to actual needs. Specifically, when the outdoor temperature is at a relatively low temperature, as long as the low-temperature water in the water collection tank 25 is heat exchanged through the water-fluorine heat exchanger 26, it no longer needs to be heat exchanged with the air-water heat exchanger 22. The refrigerant cooled by the water-fluorine heat exchanger 26 can be cooled by the dry cooler 231 and then naturally cooled with the air. There is no need to start the condensing fan 232; when the outdoor temperature is a conventional high temperature, start the water-fluorine heat exchanger 26, the air-water heat exchanger 22 and the dry cooler 231, and at the same time, the condensing fan 232 runs at a low speed; when the outdoor temperature exceeds the preset temperature, increase the speed of the circulating water pump 271 to increase the water flow rate, and at the same time, increase the exhaust volume of the condensing fan 232 and the evaporating fan 11.

[0040] The control device uses advanced control algorithms and sensor technology to monitor and adjust the operating status of the equipment unit in real time, improving the cooling efficiency and stability. In addition, the control device effectively utilizes natural physical conditions, combines outdoor temperature and cooling demand for intelligent adjustment, so that the computer room cooling system 100 always operates at the optimal refrigerant temperature state, and realizes that the computer room cooling system 100 always operates at the optimal high-efficiency and energy-saving cooling condition.

[0041] like Figure 1 As shown, the indoor device 1 further includes a first one-way valve 14 , and the first one-way valve 14 is connected in parallel with the compressor 13 .

[0042] The first one-way valve 14 cooperates with the compressor 13 to prevent the refrigerant from flowing back on the one hand, and on the other hand, when the outdoor low temperature environment is used to naturally cool the indoor environment, the compressor 13 does not run. At this time, the state of the one-way valve is usually maintained closed or only a very small amount of refrigerant is allowed to leak naturally to maintain the relative stability of the refrigerant in the system.

[0043] like Figure 1 As shown, the outdoor device 2 further includes a second one-way valve 273 , and the second one-way valve 273 is connected in parallel with the fluorine pump 272 .

[0044] The second one-way valve 273 can prevent the refrigerant from flowing back. The outlet of the second one-way valve 273 is connected to the inlet of the electronic expansion valve 274 .

[0045] like Figure 1 As shown, the outdoor equipment 2 also includes a float valve 275 and a water inlet pipe 276. The float valve 275 is installed on the water inlet pipe 276 and is located in the water collecting tank 25. The water inlet of the water inlet pipe 276 is used to communicate with the external water inlet equipment, and the water outlet of the water inlet pipe 276 is connected to the water collecting tank 25.

[0046] The water in the water collection tank 25 will evaporate when it is circulated and used. Therefore, a float valve 275 is provided in the water collection tank 25. When the float valve 275 detects that the water in the water collection tank 25 is lower than a certain water level, the valve is opened to allow water from an external water inlet device to flow into the water collection tank 25. The external water inlet device may be an external water tank or an external faucet, etc.

[0047] According to some embodiments of the present application, please refer to Figure 1 The present invention also provides a computer room cooling method, including a computer room cooling system 100, and further comprising the following steps: S01: The refrigerant first passes through the evaporator 12 for heat exchange to reduce the temperature inside the machine room; S02: After heat exchange in the evaporator 12, the low-temperature and low-pressure refrigerant gas is compressed by the compressor 13 to become a high-temperature and high-pressure refrigerant gas; S03: The high-temperature and high-pressure refrigerant compressed by the compressor 13 is cooled by heat exchange through the water-fluorine heat exchanger 26, and the heat is transferred to the water flowing in from the water collecting tank 25. The heated water then passes through the air-water heat exchanger 22 to transfer the heat of the water to the air, and the hot air is blown out of the outside through the condensing fan 232; S04: The refrigerant after heat exchange and cooling in the water-fluorine heat exchanger 26 is further cooled in the dry cooler 231, and the heat is transferred to the air, and the hot air is blown out to the outside through the condensing fan 232; S05: The refrigerant cooled by the water-fluorine heat exchanger 26 and the dry cooler 231 flows through the electronic expansion valve 274 and is throttled to the evaporator 12 for heat exchange; S06: Repeat steps S02 to S05.

[0048] In S03, it is important to note that the high-temperature and high-pressure refrigerant compressed by the compressor 13 is cooled by heat exchange through the water-fluorine heat exchanger 26, and the heat is transferred to the water flowing in from the water collection tank 25. The heated water is pumped to the rectangular sprayer 242 through the spray water pump 243, and the rectangular sprayer 242 sprays water onto the fins of the air-water heat exchanger 22. The air-water heat exchanger 22 transfers the heat of the water to the air, and the hot air is blown to the outside through the condensing fan 232.

Claims

1. A machine room cooling system, characterized in that: include: An indoor device (1), the indoor device (1) comprising an indoor machine case and an evaporating fan (11), an evaporator (12), and a compressor (13) installed in the indoor machine case, the air outlet of the evaporating fan (11) being in communication with the evaporator (12), and the outlet of the evaporator (12) being in communication with the air inlet of the compressor (13); An outdoor device (2), the outdoor device (2) comprising an outdoor machine box (21), four air-water heat exchangers (22), two dry coolers (231), a condensing fan (232), a spray assembly (24), a water collection tank (25), a water-fluorine heat exchanger (26), a circulating water pump (271), a fluorine pump (272) and an electronic expansion valve (274), the four air-water heat exchangers (22) being respectively mounted on four sides of the outdoor machine box (21), the air-water heat exchangers (22) being respectively mounted on four sides of the outdoor machine box (21), and the air-water heat exchangers (231) being respectively mounted on four sides of the outdoor machine box (21). The air inlet of the dry cooler (22) is in communication with the external air, the two dry coolers (231) are installed in a V-shape in the middle of the outdoor machine box (21), the condensing fan (232) is installed on the top of the outdoor machine box (21) above the dry cooler (231), the air outlet of the condensing fan (232) is in communication with the external air, the spray assembly (24) is installed in the outdoor machine box (21), and the spray assembly (24) includes a spray bracket (241), a rectangular sprinkler (242) and a sprinkler water pump (243), the sprinkler bracket (241) being mounted on the outdoor cabinet (21), the rectangular sprinkler (242) being mounted on the sprinkler bracket (241), the rectangular sprinkler (242) being located directly above the fins of the four air-to-water heat exchangers (22), and the nozzle of the rectangular sprinkler (242) being aimed at the fins of the four air-to-water heat exchangers (22), the water collecting tank (25) and the water-fluorine heat exchanger (26) are installed at the bottom of the outdoor box (21), the water collecting tank (25) is located directly below the fins of the four air-water heat exchangers (22), the water collecting tank (25) is connected to the water inlet of the water-fluorine heat exchanger (26) through the circulating water pump (271), and the water outlet of the water-fluorine heat exchanger (26) is connected to the water inlet of the rectangular sprayer (242) through the spray water pump (243); The refrigerant circulates between the indoor device (1) and the outdoor device (2), the inlet of the water-fluorine heat exchanger (26) is connected to the exhaust port of the compressor (13), the outlet of the water-fluorine heat exchanger (26) is connected to the inlet of the dry cooler (231), the outlet of the dry cooler (231) is connected to the inlet of the electronic expansion valve (274) through the fluorine pump (272), and the outlet of the electronic expansion valve (274) is connected to the inlet of the evaporator (12).

2. The computer room cooling system according to claim 1, characterized in that: The outdoor device (2) further comprises a first cleaning component (28), wherein the first cleaning component (28) comprises a wind sensor (281), a cleaning tank (282), and a control valve; The wind sensor (281) is installed in the middle of the outdoor cabinet (21), and the detection end of the wind sensor (281) is aligned with the fins of the air-water heat exchanger (22); The cleaning tank (282) contains cleaning agent, and the water outlet of the cleaning tank (282) is connected to the water collecting tank (25) through the control valve, and the control valve is in communication connection with the wind sensor (281).

3. The computer room cooling system according to claim 2, characterized in that: The first cleaning component (28) further comprises a first high-pressure water gun (283) and a first high-pressure water pump (284); the first high-pressure water gun (283) is installed in the middle of the outdoor cabinet (21); the water inlet of the first high-pressure water gun (283) is connected to the water collecting tank (25) through the first high-pressure water pump (284); the nozzle of the first high-pressure water gun (283) is aimed at the fins of the air-water heat exchanger (22); and the first high-pressure water pump (284) is communicatively connected to the wind sensor (281).

4. The computer room cooling system according to claim 1, characterized in that: The outdoor device (2) further comprises a second cleaning component (29), the second cleaning component (29) comprising a second high-pressure water gun (291) and a second high-pressure water pump (292), the second high-pressure water gun (291) being mounted on a side surface inside the outdoor cabinet (21), the water inlet of the second high-pressure water gun (291) being connected to the water collecting tank (25) via the second high-pressure water pump (292), and the nozzle of the second high-pressure water gun (291) being aimed at the dry cooler (231).

5. The computer room cooling system according to claim 4, characterized in that: The second cleaning component (29) further comprises two groups of linear modules (293), a cleaning roller (294) and a cleaning motor (295); the two groups of linear modules (293) are respectively tiltedly mounted at the front end and the rear end of the dry cooler (231), and the tilt angle is consistent with the tilt angle of the dry cooler (231); the two groups of linear modules (293) move synchronously; the front end and the rear end of the cleaning roller (294) are respectively rotatably mounted on the sliders of the two groups of linear modules (293); the output end of the cleaning motor (295) is connected to the cleaning roller (294); the two groups of linear modules (293) and the cleaning motor (295) are respectively connected to the second high-pressure water pump (292) for communication.

6. The computer room cooling system according to claim 1, characterized in that: The machine room refrigeration system (100) further comprises a control device, wherein the control device is communicatively connected to the indoor device (1) and the outdoor device (2) respectively.

7. The computer room cooling system according to claim 1, characterized in that: The indoor device (1) further comprises a first one-way valve (14), wherein the first one-way valve (14) is connected in parallel with the compressor (13).

8. The computer room cooling system according to claim 1, characterized in that: The outdoor device (2) further comprises a second one-way valve (273), wherein the second one-way valve (273) is connected in parallel with the fluorine pump (272).

9. The computer room cooling system according to claim 1, characterized in that: The outdoor equipment (2) further comprises a float valve (275) and a water inlet pipeline (276); the float valve (275) is installed on the water inlet pipeline (276) and is located in the water collecting tank (25); the water inlet of the water inlet pipeline (276) is used to communicate with an external water inlet device; the water outlet of the water inlet pipeline (276) is connected to the water collecting tank (25).

10. A method for cooling a computer room, characterized in that: The computer room cooling system (100) according to any one of claims 1 to 9, further comprising the following steps: S01: The refrigerant first passes through the evaporator (12) for heat exchange to reduce the temperature inside the machine room; S02: After heat exchange in the evaporator (12), the low-temperature and low-pressure refrigerant gas is compressed by the compressor (13) to become a high-temperature and high-pressure refrigerant gas; S03: the high-temperature and high-pressure refrigerant compressed by the compressor (13) passes through the water-fluorine heat exchanger (26) for heat exchange and cooling, and transfers heat to the water flowing in from the water collecting tank (25). The heated water then passes through the air-water heat exchanger (22) to transfer the heat of the water to the air, and the hot air is then blown out to the outside through the condensing fan (232); S04: the refrigerant that has been cooled by heat exchange in the water-fluorine heat exchanger (26) is further cooled by the dry cooler (231), and the heat is transferred to the air, and the hot air is then blown out to the outside through the condensing fan (232); S05: the refrigerant having been cooled by the water-fluorine heat exchanger (26) and the dry cooler (231) then flows through the electronic expansion valve (274) and is throttled to the evaporator (12) for heat exchange; S06: Repeat steps S02 to S05.

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