Water-cooling cold water-cooling liquid-cooling air conditioning device

Abstract

The utility model relates to the technical field of air conditioners, in particular to a water-cooling cold water and liquid-cooling air conditioning device. Comprising an EC fan, a water coil pipe, two liquid cooling distribution units, a first circulating water pump, a second circulating water pump, a first plate heat exchanger, a second plate heat exchanger, two compressors and an outdoor unit assembly, the input end of the first circulating water pump is connected with the water coil pipe, and the output end of the first circulating water pump is connected with the first plate heat exchanger; each compressor is connected with the first plate heat exchanger and the second plate heat exchanger, the outdoor unit assembly is connected with the first plate heat exchanger and the second plate heat exchanger, and each liquid cooling distribution unit is connected with the outdoor unit assembly, the first plate heat exchanger and the second plate heat exchanger. The input end of the second circulating water pump is connected with the outdoor unit assembly, and the output end of the second circulating water pump is connected with the two liquid cooling distribution units, so that the reliability of operation of the air conditioner in the machine room can be improved, and the energy consumption of the air conditioner is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a water-cooled liquid air conditioning device. Background Technology

[0002] Computer room air conditioning, also known as precision air conditioning or constant temperature and humidity air conditioning, is an air conditioning equipment designed specifically for specific environments such as computer rooms and data centers. These environments have extremely high requirements for temperature, humidity and air cleanliness, and computer room air conditioning is increasingly focusing on energy efficiency and operational reliability.

[0003] Existing computer room air conditioning units are generally single-source units, and their energy efficiency and stability do not meet the ideal requirements, resulting in low operational reliability and high energy consumption. Summary of the Invention

[0004] The purpose of this utility model is to provide a water-cooled liquid air conditioning device, which aims to solve the technical problems of existing computer room air conditioning units, which are generally single-source units, whose energy efficiency and stability do not meet the ideal effect, resulting in low operational reliability and high energy consumption.

[0005] To achieve the above objectives, this utility model employs a water-cooled liquid-cooled air conditioning device, comprising an EC fan, a water coil, two liquid-cooled distribution units, a first circulating water pump, a second circulating water pump, a first plate heat exchanger, a second plate heat exchanger, two compressors, and an outdoor unit assembly. The EC fan is located on one side of the water coil. The input end of the first circulating water pump is connected to the water coil, and the output end of the first circulating water pump is connected to the first plate heat exchanger. The second plate heat exchanger is located on one side of the first plate heat exchanger. Each compressor is connected to both the first and second plate heat exchangers. The outdoor unit assembly is connected to both the first and second plate heat exchangers. Each liquid-cooled distribution unit is connected to the outdoor unit assembly, the first plate heat exchanger, and the second plate heat exchanger. The input end of the second circulating water pump is connected to the outdoor unit assembly, and the output end of the second circulating water pump is connected to both liquid-cooled distribution units.

[0006] The outdoor unit assembly includes a casing, a spray pump, an evaporative cooling coil, a spray nozzle bracket, an air inlet, and a liquid outlet. The casing is located on one side of the EC fan. The spray nozzle bracket and the evaporative cooling coil are respectively installed inside the casing. The output end of the spray pump is connected to the bottom of the casing and the spray nozzle bracket. The air inlet and the liquid outlet are both connected to the evaporative cooling coil. The input end of the second circulating water pump is connected to the liquid outlet. The first plate heat exchanger and the second plate heat exchanger are respectively connected to the air inlet.

[0007] The outdoor unit assembly also includes an automatic water supply valve and a manual drain valve. The housing has an overflow outlet. The automatic water supply valve is connected to the housing, and the manual drain valve is also connected to the housing.

[0008] The outdoor unit assembly also includes a liquid-cooled server, which is connected to the liquid-cooled distribution unit and located outside the liquid-cooled distribution unit.

[0009] The water-cooled liquid-cooled air conditioning unit further includes a return air temperature and humidity sensor and a supply air temperature and humidity sensor. The return air temperature and humidity sensor is located on one side of the water coil, and the supply air temperature and humidity sensor is located at the end of the water coil away from the return air temperature and humidity sensor.

[0010] This utility model discloses a water-cooled liquid-cooled air conditioning device. A first circulating water pump and a compressor work together. The first circulating water pump 104 drives the circulation of an ethylene glycol solution in the system. The ethylene glycol solution is cooled in the outdoor unit assembly. When the compressor starts, the low-temperature, low-pressure refrigerant from the plate heat exchanger is pressurized and heated by the compressor before entering the plate heat exchanger to exchange heat with the ethylene glycol solution. The water coil is used for heat exchange of the solution, thereby regulating the indoor temperature. The EC fan provides necessary airflow to help make the heat exchange process in the water coil more efficient. The outdoor unit assembly improves the heat exchange efficiency of the first and second plate heat exchangers. The outdoor unit assembly may also include a water-cooled condenser, an air-cooled condenser, etc. Through the above methods, the reliability of the air conditioning operation in the computer room is improved, and the energy consumption of the air conditioning is greatly reduced. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the water-cooled and liquid-cooled system of this utility model.

[0013] Figure 2 This is a schematic diagram of the water-cooled, liquid-cooled, natural cooling system of this utility model.

[0014] Figure 3 This is a schematic diagram of the water-cooled chilled water compressor mode and the liquid-cooled air conditioning natural cooling mode system of this utility model.

[0015] Figure 4 This is a schematic diagram of the water-cooled, cold water-off, liquid-cooled air conditioning natural cooling mode system of this utility model.

[0016] Figure 5 This is a schematic diagram of the water-cooled natural cooling and liquid-cooled shut-off system of this utility model.

[0017] Figure 6 This is a schematic diagram of the water-cooled chilled water compressor mode and the liquid cooling system shutdown system of this utility model.

[0018] 101-EC fan, 102-water coil, 103-liquid cooling distribution unit, 104-first circulating water pump, 105-second circulating water pump, 106-overflow outlet, 107-first plate heat exchanger, 108-second plate heat exchanger, 109-compressor, 110-casing, 111-spray pump, 112-evaporative cooling coil, 113-sprayer head bracket, 114-air inlet, 115-liquid outlet, 116-automatic water supply valve, 117-manual drain valve, 118-liquid-cooled server, 119-return air temperature and humidity sensor, 120-supply air temperature and humidity sensor. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please see Figures 1-6This utility model provides a water-cooled liquid-cooled air conditioning device, including an EC fan 101, a water coil 102, two liquid-cooled cooling distribution units 103, a first circulating water pump 104, a second circulating water pump 105, a first plate heat exchanger 107, a second plate heat exchanger 108, two compressors 109, and an outdoor unit assembly. The EC fan 101 is located on one side of the water coil 102. The input end of the first circulating water pump 104 is connected to the water coil 102, and the output end of the first circulating water pump 104 is connected to the first plate heat exchanger 107. The second plate heat exchanger 109 is located on the first plate heat exchanger 107. On one side of a plate heat exchanger 107, each compressor 109 is connected to the first plate heat exchanger 107 and the second plate heat exchanger 108 respectively. The outdoor unit assembly is connected to the first plate heat exchanger 107 and the second plate heat exchanger 108 respectively. Each liquid-cooled distribution unit 103 is connected to the outdoor unit assembly, the first plate heat exchanger 107 and the second plate heat exchanger 108 respectively. The input end of the second circulating water pump 105 is connected to the outdoor unit assembly, and the output end of the second circulating water pump 105 is connected to two liquid-cooled distribution units 103 respectively.

[0021] In this embodiment, the first circulating water pump 104 and the compressor 109 work together. The first circulating water pump 104 drives the ethylene glycol solution to circulate in the system, cooling the ethylene glycol solution in the outdoor unit components. When the compressor 109 starts, the low-temperature, low-pressure refrigerant from the plate heat exchanger is pressurized and heated by the compressor 109 before entering the first plate heat exchanger 107 to exchange heat with the ethylene glycol solution. The water coil 102 is used for heat exchange of the solution, thereby regulating the indoor temperature. The EC fan 101 provides the necessary airflow to assist the outdoor unit in cooling the outdoor unit. The heat exchange process in the water coil 102 is more efficient. The outdoor unit assembly improves the heat exchange efficiency of the first plate heat exchanger 107 and the second plate heat exchanger 108. The outdoor unit assembly can also be a water-cooled condenser, an air-cooled condenser, etc. Through the above methods, the reliability of the computer room air conditioner operation can be improved and the energy consumption of the air conditioner can be greatly reduced. The liquid cooling terminal and the water-cooled chilled water are connected in parallel. The first plate heat exchanger 107 and the second plate heat exchanger 108 inside the water-cooled chilled water can also be shell and tube heat exchangers, coaxial heat exchangers, immersed coil heat exchangers, etc.

[0022] Furthermore, the outdoor unit assembly includes a housing 110, a spray pump 111, an evaporative cooling coil 112, a nozzle bracket 113, an air inlet 114, and a liquid outlet 115. The housing 110 is located on one side of the EC fan 101. The nozzle bracket 113 and the evaporative cooling coil 112 are respectively disposed inside the housing 110. The output end of the spray pump 111 is connected to the bottom of the housing 110, and the output end of the spray pump 111 is connected to the nozzle bracket 113. The air inlet 114 and the liquid outlet 115 are both connected to the evaporative cooling coil 112. The input end of the second circulating water pump 105 is connected to the liquid outlet 115. The first plate heat exchanger 107 and the second plate heat exchanger 108 are respectively connected to the air inlet 114.

[0023] In this embodiment, the ethylene glycol solution, after being cooled by the evaporative cooling coil 112, enters the second circulating water pump 105. A portion of the solution is pumped by the second circulating water pump 105 to each of the liquid cooling distribution units 103 for heat exchange, while the other portion directly enters the water coil 102 for heat exchange. The high-temperature solution exiting the liquid cooling distribution unit 103 and the water coil 102 returns directly to the evaporative cooling coil 112 for condensation and heat dissipation.

[0024] Furthermore, the outdoor unit assembly also includes an automatic water supply valve 116 and a manual drain valve 117. The housing 110 has an overflow port 106. The automatic water supply valve 116 is connected to the housing 110, and the manual drain valve 117 is connected to the housing 110.

[0025] In this embodiment, the overflow port 106 prevents excessive cooling water from entering the housing 110. When there is too much cooling water, it will flow out through the overflow port 106. The automatic water replenishment valve 116 is used to automatically add cooling water, and the manual drain valve 117 is used to drain impurities from the housing 110.

[0026] Furthermore, the outdoor unit assembly also includes a liquid-cooled server 118, which is connected to the liquid-cooled distribution unit 103 and located outside the liquid-cooled distribution unit 103.

[0027] In this embodiment, the liquid-cooled server 118 is used to control the liquid-cooled distribution unit 103 to ensure the stable operation of the liquid-cooled distribution unit 103.

[0028] Furthermore, the water-cooled liquid-cooled air conditioning device also includes a return air temperature and humidity sensor 119 and a supply air temperature and humidity sensor 120. The return air temperature and humidity sensor 119 is disposed on one side of the water coil 102, and the supply air temperature and humidity sensor 120 is disposed at the end of the water coil 102 away from the return air temperature and humidity sensor 119.

[0029] In this embodiment, the return air temperature and humidity sensor 119 is used to collect the temperature of the gas blown by the EC fan 101 onto the water coil 102, and the supply air temperature and humidity sensor 120 is used to collect the temperature of the gas transmitted by the EC fan 101.

[0030] When the liquid cooling and water-cooled refrigerant pump systems operate simultaneously, the operating mode of this water-cooled refrigerant pump type air conditioning system is as follows:

[0031] Work Mode 1:

[0032] When the outdoor return air humidity is low, both the liquid cooling and water cooling systems operate in a fully natural cooling mode. The ethylene glycol solution, after being cooled by the evaporative cooling coil 112, enters the second circulating water pump 105. A portion of the solution is pumped by the second circulating water pump 105 to each liquid cooling distribution unit 103 for heat exchange, while the other portion directly enters the water coil 102 for heat exchange. The high-temperature solution exiting the liquid cooling distribution unit 103 and the water coil 102 returns directly to the outdoor evaporative cooling coil 112 for condensation and heat dissipation. The cycle continues as follows: Figure 2 As shown.

[0033] Working Mode Two:

[0034] When the outdoor return air humidity is relatively high, the liquid cooling system operates in full natural cooling mode, and the water cooling system operates in compressor 109 mode. The ethylene glycol solution is cooled by the evaporator coil 112 and then enters the second circulating water pump 105. A portion of the solution is transported by the second circulating water pump 105 to each of the liquid cooling distribution units 103 for heat exchange, while the other portion of the solution directly enters the second plate heat exchanger 108 to exchange heat with the high-temperature and high-pressure refrigerant. The high-temperature solution after exiting the liquid cooling distribution unit 103 and the second plate heat exchanger 108 returns directly to the outdoor evaporator coil 112 for condensation and heat dissipation. The refrigerant-side circulation involves the compressor 109 system starting up. The low-temperature, low-pressure refrigerant from the first plate heat exchanger 107 is pressurized and heated by the compressor 109, then enters the second plate heat exchanger 108 to exchange heat with the ethylene glycol solution. The condensed liquid refrigerant then passes through a dryer filter and a sight glass, and is throttled and depressurized by an electronic expansion valve before re-entering the first plate heat exchanger 107 for evaporative heat exchange. The cycle is as follows: Figure 3As shown. The water coil 102 circulates: the low-temperature solution from the first plate heat exchanger 107 is transported to the water coil 102 for heat exchange by the first circulating water pump 104, and the high-temperature solution returns to the first plate heat exchanger 107 for cooling.

[0035] When the liquid cooling and water cooling systems serve as backups for each other, the operating mode of the liquid cooling system during normal operation is as follows:

[0036] Working Mode 3:

[0037] The liquid cooling system operates in a fully natural cooling mode. The ethylene glycol solution, after heat exchange through the evaporative cooling coil 112, is then transported by the second circulating water pump 105 to each of the liquid cooling distribution units 103 for heat absorption. The solution exiting the liquid cooling distribution unit 103 returns to the outdoor evaporative cooling coil 112 for heat dissipation, and the cycle continues as follows: Figure 4 As shown.

[0038] Working Mode Four:

[0039] When the outdoor return air humidity is low, the water-cooled chiller system operates in full natural cooling mode. The ethylene glycol solution, after being cooled by the evaporative cooling coil 112, enters the second circulating water pump 105. A portion of the solution is pumped by the second circulating water pump 105 to the water coil 102 for heat exchange. The high-temperature solution exiting the water coil 102 returns directly to the outdoor evaporative cooling coil 112 for condensation and heat dissipation, and the cycle continues as follows: Figure 5 As shown.

[0040] Work Mode 5:

[0041] When the outdoor return air humidity is high, the water-cooled chiller system operates in compressor 109 mode. The ethylene glycol solution, after being cooled by the evaporator coil 112, enters the second circulating water pump 105 and is transported to the second plate heat exchanger 108 for heat exchange. The high-temperature solution exiting the second plate heat exchanger 108 returns directly to the outdoor evaporator coil 112 for condensation and heat dissipation. The refrigerant-side circulation occurs when compressor 109 is started. The low-temperature, low-pressure refrigerant from the first plate heat exchanger 107 is pressurized and heated by compressor 109 before entering the second plate heat exchanger 108 to exchange heat with the ethylene glycol solution. The condensed liquid refrigerant then passes through a dryer filter and a sight glass, and is throttled and cooled by the electronic expansion valve before entering the evaporator for evaporation and heat exchange. The cycle is as follows: Figure 6 As shown. The water coil 102 circulates: the low-temperature solution from the first plate heat exchanger 107 is transported to the water coil 102 for heat exchange via the first circulating water pump 104, and the high-temperature solution returns to the first plate heat exchanger 107 for cooling.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A water-cooled cold water liquid-cooled air conditioning device, characterized in that, it comprises an EC fan, a water coil, two liquid-cooled cooling distribution units, a first circulating water pump, a second circulating water pump, a first plate heat exchanger, a second plate heat exchanger, two compressors and an outdoor unit assembly, the EC fan is located on one side of the water coil, the input end of the first circulating water pump is connected with the water coil, the output end of the first circulating water pump is connected with the first plate heat exchanger, the second plate heat exchanger is located on one side of the first plate heat exchanger, each of the compressors is connected with the first plate heat exchanger and the second plate heat exchanger respectively, the outdoor unit assembly is connected with the first plate heat exchanger and the second plate heat exchanger respectively, each of the liquid-cooled cooling distribution units is connected with the outdoor unit assembly, the first plate heat exchanger and the second plate heat exchanger respectively, the input end of the second circulating water pump is connected with the outdoor unit assembly, and the output end of the second circulating water pump is connected with two liquid-cooled cooling distribution units respectively.

2. The water-cooled cold water liquid-cooled air conditioning device according to claim 1, characterized in that, the outdoor unit assembly comprises a casing, a spray pump, an evaporative cooling coil, a spray head frame, an air inlet interface and a liquid outlet interface, the casing is located on one side of the EC fan, the spray head frame and the evaporative cooling coil are arranged in the casing respectively, the output end of the spray pump is connected with the bottom of the casing, the output end of the spray pump is connected with the spray head frame, the air inlet interface and the liquid outlet interface are both connected with the evaporative cooling coil, the input end of the second circulating water pump is connected with the liquid outlet interface, and the first plate heat exchanger and the second plate heat exchanger are connected with the air inlet interface respectively.

3. The water-cooled cold water liquid-cooled air conditioning device according to 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 in communication with the casing, and the manual blowdown valve is in communication with the casing.

4. The water-cooled cold water liquid-cooled air conditioning device according to claim 3, characterized in that, the outdoor unit assembly further comprises a liquid-cooled server, the liquid-cooled server is connected with the liquid-cooled cooling distribution unit and located outside the liquid-cooled cooling distribution unit.

5. The water-cooled cold water liquid-cooled air conditioning device according to claim 4, characterized in that, the water-cooled cold water liquid-cooled air conditioning device 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 water coil, and the supply air temperature and humidity sensor is arranged at the end of the water coil away from the return air temperature and humidity sensor.

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