Air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, in particular to an air conditioning system which comprises an EC fan, a coil pipe frame, a fluorine pump, a compressor, a heat exchanger, a first one-way valve, a second one-way valve and an outdoor unit assembly. The heat exchanger serves as a heat exchanger and is responsible for transferring heat in a refrigerant to cooling water or other fluid, the coil pipe frame conducts heat exchange with air through the cooling water or the refrigerant in a coil pipe, so that indoor temperature adjustment is achieved, the EC fan provides necessary air flow, the heat exchange process in the coil pipe frame is more efficient, and the heat exchange efficiency is improved. Through the mode, the operation reliability of the air conditioner in the machine room is improved, the energy consumption of the air conditioning system is reduced, and the stable operation of the machine room is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially relates to a kind of air conditioning system. BACKGROUND

[0002] Machine room air conditioner is also called precision air conditioner or constant temperature and humidity air conditioner, which is designed for computer room, data center and other specific environments. These environments have high requirements on temperature, humidity and air cleanliness. Machine room air conditioner pays more and more attention to energy saving and reliable operation.

[0003] The existing machine room air conditioner has low reliability and high energy consumption, which cannot guarantee the stable operation of the machine room. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an air conditioning system to solve the problem of low reliability of the existing machine room air conditioner, high energy consumption of the air conditioning system and unstable operation of the machine room.

[0005] To achieve the above-mentioned purpose, the utility model provides an air conditioning system, which comprises an EC fan, a coil pipe rack, a fluorine pump, a compressor, a heat exchanger, a first check valve, a second check valve and an outdoor unit assembly. The EC fan is arranged on one side of the coil pipe rack. The fluorine pump is communicated with the coil pipe rack and located at the input end of the coil pipe rack. The heat exchanger is communicated with the fluorine pump and located at the output end of the fluorine pump. The compressor is communicated with the coil pipe rack and located at the output end of the coil pipe rack. The heat exchanger is communicated with the compressor and located at the output end of the compressor. The first check valve is arranged at both ends of the fluorine pump. The second check valve is arranged at both ends of the compressor. The outdoor unit assembly is communicated with the heat exchanger and located on one side of the heat exchanger.

[0006] The outdoor unit assembly comprises a casing, a spray pump, a spray head rack, an evaporative cooling coil, a circulating water pump and a liquid cooling cooling distribution unit. The casing is arranged on one side of the heat exchanger. The spray head rack is detachably connected with the casing and located on the inner side wall of the casing. The spray pump is communicated with the casing and located on one side of the casing. The output end of the spray pump is communicated with the spray head rack and located on one side of the spray head rack. The evaporative cooling coil is arranged below the spray head rack. The circulating water pump is communicated with the heat exchanger and located on one side of the heat exchanger. The output end of the circulating water pump is communicated with the evaporative cooling coil. The input end of the liquid cooling cooling distribution unit is communicated with the circulating water pump. The output end of the liquid cooling cooling distribution unit is communicated with the evaporative cooling coil.

[0007] The outdoor unit assembly further comprises an automatic water supplement valve and a manual sewage valve, the casing has a water overflow port, the automatic water supplement valve is communicated with the casing, and the manual sewage valve is communicated with the casing.

[0008] The outdoor unit assembly further comprises a liquid-cooled server, and the liquid-cooled server is communicated with the liquid-cooled cooling distribution unit.

[0009] The air conditioning system further comprises a return air temperature and humidity sensor and a supply air temperature and humidity sensor, the return air temperature and humidity sensor is arranged on one side of the coil rack, and the supply air temperature and humidity sensor is arranged on one side of the coil rack.

[0010] The air conditioning system of the utility model, the fluorine pump and the compressor work together to drive the circulation of refrigerant in the system, the fluorine pump realizes natural cooling by using the temperature difference between indoor and outdoor, and the compressor is used for improving the pressure of refrigerant, the heat exchanger is used as a heat exchanger and is responsible for transferring the heat in the refrigerant to cooling water or other fluids, the coil rack uses cooling water or refrigerant in the coil to exchange heat with air, so that the indoor temperature is adjusted, the EC fan provides necessary air flow and helps the heat exchange process in the coil rack to be more efficient, the outdoor unit assembly improves the heat exchange efficiency of the heat exchanger, in this way, the reliability of the operation of the machine room air conditioner is improved, the energy consumption of the air conditioning system is reduced, and the stable operation of the machine room is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0012] Figure 1 It is a structure schematic view of the air conditioning system of the utility model.

[0013] Figure 2 It is a structure schematic view of embodiment 1 of the utility model.

[0014] Figure 3 It is a structure schematic view of embodiment 2 of the utility model.

[0015] 101-EC fan, 102-coil rack, 103-fluorine pump, 104-compressor, 105-heat exchanger, 106-first check valve, 107-second check valve, 108-return air temperature and humidity sensor, 109-supply air temperature and humidity sensor, 110-casing, 111-spraying pump, 112-sprinkler rack, 113-evaporative cooling coil, 114-circulating water pump, 115-liquid-cooled cooling distribution unit, 116-automatic water supplement valve, 117-manual sewage valve, 118-liquid-cooled server, 119-water overflow port. DETAILED DESCRIPTION

[0016] Please refer to Figures 1 to 3 , wherein, Figure 1 is a structure schematic diagram of the air conditioning system of the utility model, Figure 2 is a structure schematic diagram of embodiment 1 of the utility model, Figure 3 is a structure schematic diagram of embodiment 2 of the utility model.

[0017] The utility model provides a kind of air conditioning system, including EC fan 101, coil holder 102, fluorine pump 103, compressor 104, heat exchanger 105, first check valve 106, second check valve 107, return air temperature and humidity sensor 108, air supply temperature and humidity sensor 109 and outdoor unit component, the outdoor unit component includes casing 110, spray pump 111, spray head frame 112, evaporative cooling coil 113, circulating water pump 114, liquid cooling cooling distribution unit 115, automatic water replenishing valve 116, manual blow-off valve 117 and liquid cooling server 118.

[0018] EC fan 101 is arranged in one side of coil holder 102, fluorine pump 103 is communicated with coil holder 102, and located in the input end of coil holder 102, heat exchanger 105 is communicated with fluorine pump 103, and located in the output end of fluorine pump 103, compressor 104 is communicated with coil holder 102, and located in the output end of coil holder 102, heat exchanger 105 is communicated with compressor 104, and located in the output end of compressor 104, first check valve 106 is arranged in both ends of fluorine pump 103, second check valve 107 is arranged in both ends of compressor 104, outdoor unit component is communicated with heat exchanger 105, and located in one side of heat exchanger 105.

[0019] In the embodiment, fluorine pump 103 and compressor 104 work together to drive the circulation of refrigerant in the system, fluorine pump 103 realizes natural cooling by indoor and outdoor temperature difference, and compressor 104 is used to increase the pressure of refrigerant, heat exchanger 105 is used as heat exchanger, and is responsible for transferring heat in refrigerant to cooling water or other fluids, coil holder 102 uses cooling water or refrigerant in coil to exchange heat with air, to realize indoor temperature regulation, EC fan 101 provides necessary air flow, helps heat exchange process in coil holder 102 more efficient, outdoor unit component improves the heat exchange efficiency of heat exchanger 105, in this way, improve the reliability of machine room air conditioning operation, reduce the energy consumption of air conditioning system, ensure the stable operation of machine room.

[0020] The compressor 104 herein can adopt various options such as centrifugal compressor, rotary compressor, scroll compressor, etc.; the heat exchanger 105 can also use plate heat exchanger, shell-and-tube heat exchanger, double-pipe heat exchanger, immersion coiled tube heat exchanger, etc.

[0021] Further, the casing 110 is arranged at one side of the heat exchanger 105, the nozzle holder 112 is detachably connected with the casing 110 and located at the inner side wall of the casing 110, the spray pump 111 is in communication with the casing 110 and located at one side of the casing 110, the output end of the spray pump 111 is in communication with the nozzle holder 112 and located at one side of the nozzle holder 112, the evaporative cooling coil 113 is arranged below the nozzle holder 112, the circulating water pump 114 is in communication with the heat exchanger 105 and located at one side of the heat exchanger 105, the output end of the circulating water pump 114 is in communication with the evaporative cooling coil 113, the input end of the liquid cooling and cooling distribution unit 115 is in communication with the circulating water pump 114, and the output end of the liquid cooling and cooling distribution unit 115 is in communication with the evaporative cooling coil 113.

[0022] In the present embodiment, the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114, part of the solution is transported by the circulating water pump 114 to each liquid cooling and cooling distribution unit 115 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange. The high-temperature solution after the liquid cooling and cooling distribution unit 115 and the heat exchanger 105 directly returns to the evaporative cooling coil 113 for condensation and heat dissipation.

[0023] The evaporative cooling coil 113 can also use water-cooled condenser, air-cooled condenser, air-cooled spray cooling, etc.

[0024] Further, the casing 110 has a water overflow port 119, the automatic water replenishment valve 116 is in communication with the casing 110, and the manual blowdown valve 117 is in communication with the casing 110.

[0025] In the present embodiment, the water overflow port 119 prevents the cooling water in the casing 110 from being too much, the automatic water replenishment valve 116 is used for automatically adding cooling water, and the manual blowdown valve 117 is used for discharging impurities in the casing 110.

[0026] Further, the liquid cooling server 118 is in communication with the liquid cooling and cooling distribution unit 115.

[0027] In the present embodiment, the liquid cooling server 118 is used for controlling the liquid cooling and cooling distribution unit 115.

[0028] Further, the return air temperature and humidity sensor 108 is arranged on one side of the coil rack 102, and the supply air temperature and humidity sensor 109 is arranged on one side of the coil rack 102.

[0029] In the present embodiment, the return air temperature and humidity sensor 108 is used to collect the temperature of the gas blown to the coil rack 102 by the EC fan 101, and the supply air temperature and humidity sensor 109 is used to collect the temperature of the gas delivered by the EC fan 101.

[0030] When the liquid cooling and the water cooling fluorine pump 103 system are simultaneously operated, the working mode of the water cooling fluorine pump 103 type air conditioning system is as follows:

[0031] Working mode one:

[0032] When the outdoor return air humidity is relatively low, the liquid cooling and the water cooling fluorine pump 103 system are both operated in the full natural cooling mode: the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114, part of the solution is delivered to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange; the high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is that the fluorine pump 103 is started, the gaseous refrigerant after the evaporative cooling coil 113 enters the heat exchanger 105 for heat exchange with water, the condensed liquid refrigerant is then delivered by the fluorine pump 103, throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and the circulation is as shown in Figure 1 .

[0033] Working mode two:

[0034] When the outdoor return air humidity is at an intermediate value, the liquid cooling system is operated in the full natural cooling mode, and the water cooling fluorine pump 103 is operated in the pressure pump mixed mode: the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114, part of the solution is delivered to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange; the high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is that the fluorine pump 103 system is started, the gaseous refrigerant after the evaporative cooling coil 113 enters the compressor system for pressure and temperature increase, enters the heat exchanger 105 for heat exchange with water, the condensed liquid refrigerant is then delivered by the fluorine pump 103, passes through the drying filter and the liquid sight glass, is throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and the circulation is as shown in Figure 1 .

[0035] Mode three:

[0036] When the outdoor return air humidity is relatively high, the liquid cooling system runs in full natural cooling mode, and the water cooling fluorine pump 103 system runs in compressor mode: the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114, part of the solution is transported to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange with high-temperature and high-pressure refrigerant; the high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation. The fluorine side cycle is a compressor system starting, the low-temperature and low-pressure refrigerant after the evaporative cooling coil 113 is pressurized and heated by the compressor 104, enters the heat exchanger 105 for heat exchange with water, and the condensed liquid refrigerant is then filtered by a drying filter, a liquid mirror, and an electronic expansion valve for throttling, cooling and pressure reduction, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and its cycle is as shown in Figure 1 .

[0037] When the liquid cooling and water cooling fluorine pump 103 system are backed up for each other, the working mode is as follows:

[0038] When the liquid cooling system is normally running, the working mode is as follows:

[0039] Mode four:

[0040] The liquid cooling system runs in full natural cooling mode: the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then transported to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat absorption; the solution after the liquid cooling cooling distribution unit 115 returns to the outdoor evaporative cooling coil 113 for heat dissipation, and its cycle is as shown in Figure 1 .

[0041] When the liquid cooling cooling distribution unit 115 fails, the system automatically switches to the water cooling fluorine pump 103 mode, and the working mode is as follows:

[0042] Mode five:

[0043] When the outdoor return air humidity is relatively low, the water-cooled fluorine pump 103 system runs in full natural cooling mode: the glycol solution is cooled by the evaporative cooling coil 113, enters the circulating water pump 114, and is transported to the heat exchanger 105 for heat exchange; the high-temperature solution after the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side cycle is that the fluorine pump 103 system is started, the gaseous refrigerant after the evaporative cooling coil 113 enters the heat exchanger 105 for heat exchange with water, the condensed liquid refrigerant is transported through the fluorine pump 103, passes through the drying filter, the liquid mirror, is throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and the cycle is as shown in Figure 1 .

[0044] Working mode six:

[0045] When the outdoor return air humidity is at an intermediate value, the water-cooled fluorine pump 103 runs in a pressure pump mixed mode: the glycol solution is cooled by the evaporative cooling coil 113, enters the circulating water pump 114, and is transported to the heat exchanger 105 for heat exchange; the high-temperature solution after the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side cycle is that the fluorine pump 103 system is started, the gaseous refrigerant after the evaporative cooling coil 113 enters the compressor system for pressure increase and temperature increase, enters the heat exchanger 105 for heat exchange with water, the condensed liquid refrigerant is transported through the fluorine pump 103, passes through the drying filter, the liquid mirror, is throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and the cycle is as shown in Figure 1 .

[0046] Working mode seven:

[0047] When the outdoor return air humidity is relatively high, the water-cooled fluorine pump 103 system runs in a compressor mode: the glycol solution is cooled by the evaporative cooling coil 113, enters the circulating water pump 114, and is transported to the heat exchanger 105 for heat exchange; the high-temperature solution after the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side cycle is that the compressor system is started, the low-temperature and low-pressure refrigerant after the evaporative cooling coil 113 is pressure-increased and temperature-increased by the compressor 104, enters the heat exchanger 105 for heat exchange with water, the condensed liquid refrigerant is transported through the drying filter, the liquid mirror, is throttled and temperature-reduced by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and the cycle is as shown in Figure 1 .

[0048] Example 1

[0049] The fluorine pump 103 and the compressor 104 are additionally provided as double groups

[0050] The water-cooled fluorine pump 103 type double cold source air conditioning system, when the liquid cooling and water-cooled fluorine pump 103 system runs simultaneously, its working mode is as follows:

[0051] Working mode one:

[0052] When the outdoor return air humidity is relatively low, the liquid cooling and water-cooled fluorine pump 103 systems run full natural cooling mode - the ethylene glycol solution is cooled by the evaporative cooling coil 113 and enters the circulating water pump 114, part of the solution is transported to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange; the high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is two parallel fluorine pump 103 systems starting (the number of start and stop can be selected according to the demand), the gaseous refrigerant after the evaporative cooling coil 113 enters the heat exchanger 105 and exchanges heat with water, the condensed liquid refrigerant is transported through the fluorine pump 103, passes through the drying filter and the liquid mirror, is throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and its circulation is as shown in Figure 2 .

[0053] Working mode two:

[0054] When the outdoor return air humidity is at an intermediate value, the liquid cooling system runs full natural cooling mode, and the water-cooled fluorine pump 103 runs pressure pump mixed mode - the ethylene glycol solution is cooled by the evaporative cooling coil 113 and enters the circulating water pump 114, part of the solution is transported to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange; the high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is two parallel fluorine pump 103 systems starting (the number of start and stop can be selected according to the demand), the gaseous refrigerant after the evaporative cooling coil 113 enters the compressor system for pressure and temperature increase, enters the heat exchanger 105 and exchanges heat with water, the condensed liquid refrigerant is transported through the fluorine pump 103, passes through the drying filter and the liquid mirror, is throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and its circulation is as shown in Figure 2 .

[0055] Working mode three:

[0056] When the outdoor return air humidity is relatively high, the liquid cooling system runs in full natural cooling mode, and the water-cooled fluorine pump 103 system runs in compressor mode. The ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114. Part of the solution is transported by the circulating water pump 114 to each liquid cooling cooling distribution unit 115 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange with high-temperature and high-pressure refrigerant. The high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation. The fluorine side cycle is a two-parallel compressor system starting (the number of start-stop can be selected according to the demand), and the low-temperature and low-pressure refrigerant after the evaporative cooling coil 113 is pressurized and heated by the compressor 104, and then enters the heat exchanger 105 to exchange heat with water. The condensed liquid refrigerant then passes through a drying filter, a liquid sight glass, and an electronic expansion valve for throttling, cooling and pressure reduction, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and its cycle is as shown in Figure 2

[0057] When the liquid cooling system is normally running, its working mode is as follows:

[0058] When the liquid cooling system is normally running, its working mode is as follows:

[0059] Working mode four:

[0060] When the liquid cooling system is normally running, its working mode is as follows: Figure 2

[0061] When the liquid cooling cooling distribution unit 115 fails, the system automatically switches to the water-cooled fluorine pump 103 mode, and its working mode is as follows:

[0062] Working mode five:

[0063] ​​When the outdoor return air humidity is relatively low, the water-cooled fluorine pump 103 system runs in full natural cooling mode - the glycol solution is cooled by the evaporative cooling coil 113, enters the circulating water pump 114, and is transported to the heat exchanger 105 for heat exchange; the high-temperature solution after the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation, and the fluorine side circulation is two parallel fluorine pump 103 systems starting (the number of start and stop can be selected according to the demand), the gaseous refrigerant after the evaporative cooling coil 113 enters the heat exchanger 105 for heat exchange with water, and the condensed liquid refrigerant is transported through the fluorine pump 103, the drying filter, the liquid mirror, throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporative heat exchange, and the circulation is as shown in Figure 2 . .

[0064] Working mode six:

[0065] When the outdoor return air humidity is in an intermediate value, the water-cooled fluorine pump 103 runs in a pressure pump mixed mode - the glycol solution is cooled by the evaporative cooling coil 113, enters the circulating water pump 114, and is transported to the heat exchanger 105 for heat exchange; the high-temperature solution after the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is two parallel fluorine pump 103 systems starting (the number of start and stop can be selected according to the demand), the gaseous refrigerant after the evaporative cooling coil 113 enters the compressor system for pressure increase and temperature increase, enters the heat exchanger 105 for heat exchange with water, and the condensed liquid refrigerant is transported through the fluorine pump 103, the drying filter, the liquid mirror, throttled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporative heat exchange, and the circulation is as shown in Figure 2 .

[0066] Working mode seven:

[0067] When the outdoor return air humidity is relatively high, the water-cooled fluorine pump 103 system runs in a compressor mode - the glycol solution is cooled by the evaporative cooling coil 113, enters the circulating water pump 114, and is transported to the heat exchanger 105 for heat exchange; the high-temperature solution after the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is two parallel compressor systems starting (the number of start and stop can be selected according to the demand), the low-temperature and low-pressure refrigerant after the evaporative cooling coil 113 is pressurized and heated by the compressor 104, enters the heat exchanger 105 for heat exchange with water, and the condensed liquid refrigerant is transported through the drying filter, the liquid mirror, throttled and cooled by the electronic expansion valve, and then enters the evaporative cooling coil 113 for evaporative heat exchange, and the circulation is as shown in Figure 2 .

[0068] Example 2

[0069] Multi-stage said coil holder 102 and remove the fluorine pump 103 formed by the multi-cool source air conditioning system

[0070] The multi-cool source air conditioning system, liquid cooling and air cooling, liquid cooling and chilled water system runs at the same time, its working mode is as follows.

[0071] Working mode one:

[0072] When the outdoor return air humidity is relatively low, the liquid cooling, chilled water system runs full natural cold mode, the air cooling system is closed, the ethylene glycol solution is cooled by the evaporative cooling coil 113 and enters the circulating water pump 114, part of the solution is transported to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange; the high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation, and its circulation is as shown in Figure 3 .

[0073] Working mode two:

[0074] When the outdoor return air humidity is relatively high, the liquid cooling system runs full natural cold mode, the air cooling system runs compressor mode, and the chilled water system is closed, the ethylene glycol solution is cooled by the evaporative cooling coil 113 and enters the circulating water pump 114, part of the solution is transported to each liquid cooling cooling distribution unit 115 by the circulating water pump 114 for heat exchange, and the other part of the solution directly enters the heat exchanger 105 for heat exchange with high-temperature and high-pressure refrigerant. The high-temperature solution after the liquid cooling cooling distribution unit 115 and the heat exchanger 105 directly returns to the outdoor evaporative cooling coil 113 for condensation heat dissipation; the fluorine side circulation is two parallel compressor systems starting (the number of starting and stopping can be selected according to the demand), the low-temperature and low-pressure refrigerant from the evaporative cooling coil 113 is pressurized and heated by the compressor 104, enters the heat exchanger 105 for heat exchange with water, and the condensed liquid refrigerant is filtered by the drying filter, the liquid mirror, and the electronic expansion valve for throttling, cooling and pressure reduction, and then enters the evaporative cooling coil 113 for evaporation heat exchange, and its circulation is as shown in Figure 3 .

[0075] When the liquid cooling unit is the main working mode, the chilled water and air cooling unit is the standby mode, its working mode is as follows:

[0076] When the liquid cooling system is normally running, its working mode is as follows:

[0077] Working mode three:

[0078] The liquid cooling system runs in full natural cooling mode - the ethylene glycol solution is cooled by the evaporative cooling coil 113, then is transported to each liquid cooling and distribution unit 115 by the circulating water pump 114 to absorb heat; the solution after the liquid cooling and distribution unit 115 is returned to the evaporative cooling coil 113 outside the room to dissipate heat, and the cycle is as shown in Figure 3 .

[0079] When the liquid cooling and distribution unit 115 fails, the system automatically switches to air cooling and chilled water mode, and the working mode is as follows:

[0080] Working mode four:

[0081] When the outdoor return air humidity is relatively high, the liquid cooling system is turned off, the air cooling system runs in compressor mode, and the chilled water system is turned off - the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114, and the ethylene glycol solution is directly sent to the heat exchanger 105 to exchange heat with high-temperature and high-pressure refrigerant; the fluorine side cycle is two parallel compressor systems starting (the number of start and stop can be selected according to demand), and the low-temperature and low-pressure refrigerant from the evaporative cooling coil 113 is pressurized and heated by the compressor 104, then enters the heat exchanger 105 to exchange heat with water, and the condensed liquid refrigerant then passes through a drying filter, a sight glass, and is throttled, cooled and depressurized by an electronic expansion valve, and then enters the evaporative cooling coil 113 to evaporate and exchange heat, and the cycle is as shown in Figure 3 .

[0082] Working mode five:

[0083] When the outdoor return air humidity is relatively low, the liquid cooling system and the air cooling system are turned off, and the chilled water system runs - the ethylene glycol solution is cooled by the evaporative cooling coil 113 and then enters the circulating water pump 114, and the ethylene glycol solution is transported to the heat exchanger 105 by the circulating water pump 114 to exchange heat; the high-temperature solution after the heat exchanger 105 is directly returned to the evaporative cooling coil 113 outside the room to condense and dissipate heat, and the cycle is as shown in Figure 3 .

[0084] The above disclosure is only one preferred embodiment of the present application, and cannot limit the scope of the present application. Those skilled in the art can understand that the above-mentioned embodiment can be implemented in whole or in part, and equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

1. An air conditioning system, characterized in that, comprising an EC fan, a coil bracket, a fluorine pump, a compressor, a heat exchanger, a first one-way valve, a second one-way valve and an outdoor unit assembly, the EC fan is arranged on one side of the coil bracket, the fluorine pump is communicated with the coil bracket and located at the input end of the coil bracket, the heat exchanger is communicated with the fluorine pump and located at the output end of the fluorine pump, the compressor is communicated with the coil bracket and located at the output end of the coil bracket, the heat exchanger is communicated with the compressor and located at the output end of the compressor, the first one-way valve is arranged at both ends of the fluorine pump, the second one-way valve is arranged at both ends of the compressor, and the outdoor unit assembly is communicated with the heat exchanger and located on one side of the heat exchanger.

2. The air conditioning system of claim 1, characterized in that, the outdoor unit assembly comprises a casing, a spray pump, a spray head bracket, an evaporative cooling coil, a circulating water pump and a liquid cooling cooling distribution unit, the casing is arranged on one side of the heat exchanger, the spray head bracket is detachably connected with the casing and located on the inner side wall of the casing, the spray pump is communicated with the casing and located on one side of the casing, the output end of the spray pump is communicated with the spray head bracket and located on one side of the spray head bracket, the evaporative cooling coil is arranged below the spray head bracket, the circulating water pump is communicated with the heat exchanger and located on one side of the heat exchanger, the output end of the circulating water pump is communicated with the evaporative cooling coil, the input end of the liquid cooling cooling distribution unit is communicated with the circulating water pump, and the output end of the liquid cooling cooling distribution unit is communicated with the evaporative cooling coil.

3. The air conditioning system of claim 2, characterized in that, the outdoor unit assembly further comprises an automatic water replenishment valve and a manual blowdown valve, the casing has a water overflow port, the automatic water replenishment valve is communicated with the casing, and the manual blowdown valve is communicated with the casing.

4. The air conditioning system of claim 3, characterized in that, the outdoor unit assembly further comprises a liquid cooling server, and the liquid cooling server is communicated with the liquid cooling cooling distribution unit.

5. The air conditioning system of claim 4, characterized in that, the air conditioning system further comprises a return air temperature and humidity sensor and a supply air temperature and humidity sensor, the return air temperature and humidity sensor is arranged on one side of the coil bracket, and the supply air temperature and humidity sensor is arranged on one side of the coil bracket.

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