Water evaporation cooling air conditioning unit

Abstract

The present disclosure provides a water evaporative cooling air conditioning unit, belonging to the technical field of air conditioning. It comprises a primary side fan, a cooling system and a spraying system. The primary side fan is a water-cooled fan. The cooling system comprises a first pipeline and a second pipeline. The first end of the first pipeline and the first end of the second pipeline are respectively communicated with the primary side fan. The second end of the first pipeline and the second end of the second pipeline are respectively communicated with the spraying system. The first pipeline and the second pipeline are configured to circulate the cooling medium in the spraying system between the spraying system and the primary side fan. The present disclosure can improve the energy efficiency level of the water evaporative cooling air conditioning unit.

Description

Evaporative cooling air conditioning unit Technical Field

[0001] This disclosure pertains to the field of air conditioning technology, and specifically relates to a water evaporative cooling air conditioning unit. Background Technology

[0002] Evaporative cooling air conditioning units are air conditioning systems used in data centers to regulate the temperature inside the data center, enabling electronic equipment to operate stably at a suitable temperature.

[0003] In related technologies, evaporative cooling air conditioning units mainly include primary-side fans, secondary-side fans, air heat exchangers, and spray systems. Primary-side fans are used to circulate airflow within the data center (primary airflow), while secondary-side fans circulate airflow outside the data center (secondary airflow). The air heat exchanger is located at the intersection of the primary and secondary-side fan ducts. With the help of the spray system and secondary-side fans, the primary airflow is sufficiently cooled as it flows through the air heat exchanger, thereby regulating the internal temperature of the data center.

[0004] However, since the primary-side fans are located inside the data center, and these fans themselves generate heat during operation, the primary-side airflow not only cools the data center but also the primary-side fans themselves. This results in the primary-side fans increasing the heat load on the evaporative cooling air conditioning units, thus reducing their energy efficiency. Summary of the Invention

[0005] This disclosure provides a water-evaporative cooling air conditioning unit that can improve the energy efficiency of water-evaporative cooling air conditioning units. The technical solution is as follows:

[0006] This disclosure provides a water evaporative cooling air conditioning unit, including a primary side fan, a cooling system, and a spray system;

[0007] The primary side fan is a water-cooled fan and is spaced apart from the spray system;

[0008] The cooling system includes a first pipe and a second pipe. The first end of the first pipe and the first end of the second pipe are respectively connected to the primary side fan, and the second end of the first pipe and the second end of the second pipe are respectively connected to the spray system.

[0009] The first and second pipes are configured to circulate the cooling medium within the spray system between the spray system and the primary side fan.

[0010] The beneficial effects of the technical solutions provided in this disclosure are at least:

[0011] When the evaporative cooling air conditioning unit provided in this embodiment is in operation, the primary side fan also operates. During the operation of the primary side fan, the cooling medium in the spray system can circulate between the spray system and the primary side fan through the first and second pipes, thereby cooling the primary side fan using the cooling medium. Since the increased heat load from cooling the primary side fan using the cooling medium inside the spray system is far lower than the increased heat load from cooling the primary side fan using the airflow inside the data center, the cooling system can reduce the overall heat load of the evaporative cooling air conditioning unit and improve its energy efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 is a structural schematic diagram of an indirect evaporative cooling air conditioning unit provided by related technologies;

[0014] Figure 2 is a structural schematic diagram of the first type of water evaporative cooling air conditioning unit provided in the embodiments of this disclosure;

[0015] Figure 3 is a structural schematic diagram of the second type of water evaporative cooling air conditioning unit provided in the embodiments of this disclosure;

[0016] Figure 4 is a structural schematic diagram of the third type of water evaporative cooling air conditioning unit provided in the embodiments of this disclosure;

[0017] Figure 5 is a structural schematic diagram of the fourth type of water evaporative cooling air conditioning unit provided in the embodiments of this disclosure;

[0018] Figure 6 is a structural schematic diagram of the fifth type of water evaporative cooling air conditioning unit provided in the embodiments of this disclosure;

[0019] Figure 7 is a structural schematic diagram of the sixth type of water evaporative cooling air conditioning unit provided in the embodiments of this disclosure.

[0020] The symbols in the diagram represent the following meanings:

[0021] 1. Primary side fan;

[0022] 2. Cooling system; 21. First pipe; 22. Second pipe; 23. Cooling water pump assembly; 231. First cooling water pump; 232. Second cooling water pump; 24. Third pipe; 25. Fourth pipe; 26. Cooling water tank; 27. Cooling fan; 271. Fan blade; 272. Transmission mechanism; 273. Motor; 28. Heat insulation cover; 29. ​​Heat pipe;

[0023] 3. Sprinkler system; 31. Sprinkler pump assembly; 311. First sprinkler pump; 312. Second sprinkler pump; 32. Water tray; 33. Sprinkler head;

[0024] 4. Secondary side fan;

[0025] 5. Air heat exchanger. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0027] Evaporative cooling air conditioning units are air conditioning systems used in data centers to regulate the temperature inside the data center, enabling electronic equipment to operate stably at a suitable temperature.

[0028] In related technologies, water evaporative cooling air conditioning units are mainly divided into indirect evaporative cooling air conditioning units and direct evaporative cooling air conditioning units.

[0029] Figure 1 is a schematic diagram of an indirect evaporative cooling air conditioning unit. Referring to Figure 1, the indirect evaporative cooling air conditioning unit mainly includes a primary-side fan 1, a secondary-side fan 4, an air heat exchanger 5, and a spray system 3. The primary-side fan 1 is used to circulate the airflow inside the data center (primary-side airflow, indicated by the hollow arrows in the figure), while the secondary-side fan 4 is used to circulate the airflow outside the data center (secondary-side airflow, indicated by the filled-in diagonal arrows in the figure). The air heat exchanger 5 is located at the intersection of the air ducts of the primary-side fan 1 and the secondary-side fan 4. Under the action of the spray system 3 and the secondary-side fan 4, the primary-side airflow is sufficiently cooled as it flows through the air heat exchanger 5, thereby regulating the temperature inside the data center. Because the primary-side airflow exchanges heat through the air heat exchanger 5, it does not directly contact the cooling medium sprayed by the spray system 3; therefore, it is called indirect evaporative cooling. Direct evaporative cooling air conditioning units are even simpler. They do not include the secondary side fan 4 and air heat exchanger 5. The primary side airflow directly contacts the cooling medium sprayed by the spray system 3, thus achieving sufficient cooling and regulating the internal temperature of the data center. Because the primary side airflow directly contacts the cooling medium sprayed by the spray system 3, it is called direct evaporative cooling.

[0030] In both indirect and direct evaporative cooling air conditioning units, the primary side fan 1 is located inside the data center. However, because the primary side fan 1 is located inside the data center and generates heat during operation, the primary airflow not only cools the data center but also the primary side fan 1 itself. This results in the primary side fan 1 increasing the thermal load on the evaporative cooling air conditioning unit and reducing its energy efficiency.

[0031] For example, if the power of an evaporative cooling air conditioning unit is 250kW, then the peak operating power of the primary side fan 1 can typically reach 20kW. Therefore, when the evaporative cooling air conditioning unit generates the cooling capacity corresponding to 250kW for the data center, it actually needs to handle a heat load of 270kW (250kW + 20kW). This results in the data center not actually receiving the cooling capacity corresponding to 250kW, leading to a lower Coefficient of Performance (COP) for the evaporative cooling air conditioning unit.

[0032] To solve the above-mentioned technical problems, this disclosure provides a water evaporative cooling air conditioning unit. Figure 2 is a schematic diagram of the structure of the water evaporative cooling air conditioning unit. Referring to Figure 2, the water evaporative cooling air conditioning unit includes a primary side fan 1, a cooling system 2, and a spray system 3.

[0033] The primary side fan 1 is a water-cooled fan and is separated from the spray system 3. The cooling system 2 includes a first pipe 21 and a second pipe 22. The first end of the first pipe 21 and the first end of the second pipe 22 are respectively connected to the primary side fan 1, and the second end of the first pipe 21 and the second end of the second pipe 22 are respectively connected to the spray system 3.

[0034] The first pipe 21 and the second pipe 22 are configured to circulate the cooling medium in the spray system 3 between the spray system 3 and the primary side fan 1.

[0035] When the water-evaporative cooling air conditioning unit provided in this embodiment is in operation, the primary side fan 1 also operates. During the operation of the primary side fan 1, the cooling medium in the spray system 3 can circulate between the spray system 3 and the primary side fan 1 through the first pipe 21 and the second pipe 22, thereby cooling the primary side fan 1 using the cooling medium. Since the increased heat load due to cooling the primary side fan 1 using the cooling medium inside the spray system 3 is far lower than the increased heat load due to cooling the primary side fan 1 using the primary side airflow, the cooling system 2 can reduce the overall heat load of the water-evaporative cooling air conditioning unit and improve the energy efficiency level of the water-evaporative cooling air conditioning unit.

[0036] It is easy to understand that during the operation of the primary side fan 1, the main component generating heat is the motor of the primary side fan 1. In this embodiment, the primary side fan 1 is a water-cooled fan, which refers to a fan with a water-cooled motor. That is, the first pipe 21 and the second pipe 22 are respectively connected to the water-cooled motor of the primary side fan 1, so that the cooling medium of the spray system 3 can be used to cool the water-cooled motor of the primary side fan 1, thereby reducing the increased heat load on the primary side fan 1.

[0037] It should be noted that although Figure 2 shows an indirect evaporative cooling air conditioning unit, since a direct evaporative cooling air conditioning unit also has a primary side fan 1 and a spray system 3, the water evaporative cooling air conditioning unit provided in this embodiment can also be a direct evaporative cooling air conditioning unit. For ease of introduction, the water evaporative cooling air conditioning unit will be used as an example of a direct evaporative cooling air conditioning unit in the following description.

[0038] As mentioned above, in order to cool the primary side fan 1, the cooling medium needs to circulate between the primary air blower and the outside environment. The circulation method of the cooling medium will be described below.

[0039] Referring to Figure 2, which shows the first circulation mode of the cooling medium, in this embodiment, the second end of the first pipe 21 is connected to the inlet of the spray pump assembly 31 of the spray system 3, and the second end of the second pipe 22 is connected to the outlet of the spray pump assembly 31 of the spray system 3.

[0040] In the above implementation, the spray pump assembly 31 of the spray system 3 itself provides the power required for the circulation of the cooling medium. In this case, the spray pump assembly 31 of the spray system 3 can be fully utilized, making the structure of the cooling system 2 relatively simple. Furthermore, since the cooling medium can conduct heat from the primary side fan 1 from the inside of the data center to the outside during circulation, the heat dissipation conditions are better. In this way, the natural environment can be used to dissipate the heat without increasing energy consumption excessively.

[0041] Optionally, the spray pump assembly 31 includes a first spray pump 311 and a second spray pump 312, which are connected in parallel.

[0042] Under normal circumstances, the first spray pump 311 operates normally, while the second spray pump 312 is not in operation. If the first spray pump 311 malfunctions, the second spray pump 312 will start operating as an emergency measure. Of course, the first spray pump 311 and the second spray pump 312 can also operate simultaneously, and this disclosure does not impose any restrictions on this.

[0043] Optionally, the first end of the first pipe 21 is connected to the primary side fan 1, and the second end of the first pipe 21 is connected to the water pan 32 of the spray system 3, and through the water pan 32, it is connected to the inlet of the spray water pump assembly 31. The first end of the second pipe 22 is connected to the primary side fan 1, and the second end of the second pipe 22 is connected to the outlet of the spray water pump assembly 31. During the circulation of the cooling medium, under the action of the spray water pump assembly 31, it first enters the inlet of the spray water pump assembly 31 from the water pan 32, and then enters the second end of the second pipe 22 from the outlet of the spray water pump assembly 31. Next, it enters the primary side fan 1 from the first end of the second pipe 22. After heat exchange, it enters the first end of the first pipe 21 from the primary side fan 1, and finally returns to the water pan 32 from the second end of the first pipe 21, thus completing the entire circulation process.

[0044] For example, since the spray pump assembly 31 is required as the power component for circulating the cooling medium, placing the spray system 3 close to the primary side fan 1 can effectively reduce the length of the second pipe 22 and reduce the resistance that needs to be overcome when pumping the cooling medium.

[0045] Generally, evaporative cooling air conditioning units have three operating conditions: dry, wet, and mixed. Dry operation means the spray system 3 does not spray cooling medium onto the secondary airflow; instead, the dry secondary airflow exchanges heat with the air heat exchanger 5. This condition is suitable for low heat loads. Wet operation means the spray system 3 sprays cooling medium onto the secondary airflow to lower its temperature before exchanging heat with the air heat exchanger 5. This condition is suitable for high heat loads. Mixed operation means that, based on the wet operation, the refrigeration system of the evaporative cooling air conditioning unit further enhances its cooling effect. This condition is suitable for very high heat loads. Therefore, in both wet and mixed operation conditions, the spray system 3 needs to spray cooling medium. Thus, the spray pump assembly 31 both drives the spraying of cooling medium to cool the secondary airflow and drives the cooling medium to circulate at the primary side fan 1. In dry conditions, the spray system 3 of the water evaporative cooling air conditioning unit does not need to spray cooling medium, so the spray pump assembly 31 only needs to drive the cooling medium to circulate at the primary side fan 1. In dry conditions, the pipeline between the spray pump assembly 31 and the spray nozzles 33 of the spray system 3 can be shut off by a valve.

[0046] Figure 3 is a schematic diagram of the structure of the second type of water evaporation cooling air conditioning unit provided in the embodiment of this disclosure. Figure 3 shows the second circulation mode of the cooling medium. In this embodiment, the cooling system 2 also includes a cooling water pump assembly 23, which is connected between the first end and the second end of the second pipe 22.

[0047] In the above implementation, the cooling system 2 is equipped with a cooling water pump assembly 23. Since the cooling water pump assembly 23 is connected between the first and second ends of the second pipe 22, it does not rely on the spray water pump assembly 31 of the spray system 3 and can independently achieve the circulation of the cooling medium. Furthermore, since the cooling medium can conduct the heat from the primary side fan 1 from the inside of the data center to the outside of the data center during the circulation process, the heat dissipation conditions are better. In this way, the heat can be dissipated by utilizing the natural environment without increasing excessive energy consumption.

[0048] Furthermore, in this case, since the cooling medium circulates at the primary side fan 1, there is no need to rely on the spray pump assembly 31 of the spray system 3. Therefore, the spray pump assembly 31 only needs to realize the function of spraying and cooling the secondary side airflow of the spray system 3. As a result, the spray system 3 does not need to be equipped with a valve for shutting off the spray pump assembly 31 and the nozzle 33.

[0049] Optionally, the cooling water pump assembly 23 includes a first cooling water pump 231 and a second cooling water pump 232. The first cooling water pump 231 and the second cooling water pump 232 are connected in parallel between the first end and the second end of the second pipe 22.

[0050] Under normal circumstances, the first cooling water pump 231 operates normally, while the second cooling water pump 232 is not in operation. If the first cooling water pump 231 malfunctions, the second cooling water pump 232 will start operating as an emergency measure. Of course, the first cooling water pump 231 and the second cooling water pump 232 can also operate simultaneously, and this disclosure does not impose any restrictions on this.

[0051] It should be noted that, in order to simplify the structure of the cooling system 2, the cooling water pump assembly 23 can also be configured with only one cooling water pump (first cooling water pump 231 or second cooling water pump 232), and this disclosure does not impose any restrictions on this.

[0052] Optionally, the first end of the first pipe 21 is connected to the primary side fan 1, and the second end of the first pipe 21 is connected to the water pan 32. The first end of the second pipe 22 is connected to the primary side fan 1, and the second end of the second pipe 22 is connected to the water pan 32. The cooling water pump assembly 23 is connected between the first end and the second end of the second pipe 22. During the circulation of the cooling medium, under the action of the cooling water pump assembly 23, it first enters the second end of the second pipe 22 from the water pan 32, and after passing through the cooling water pump assembly 23, it enters the primary side fan 1 from the first end of the second pipe 22. After heat exchange, it enters the first end of the first pipe 21 from the primary side fan 1, and finally returns to the water pan 32 from the second end of the first pipe 21, thus completing the entire circulation process.

[0053] For example, since the cooling water pump assembly 23 is required as the power component for circulating the cooling medium, placing the cooling water pump assembly 23 close to the primary side fan 1 can effectively reduce the length of the second pipe 22 and reduce the resistance that needs to be overcome when pumping the cooling medium.

[0054] The circulation method of the cooling medium has been described above. In certain special circumstances, it is necessary to drain the cooling medium from the spray system 3. For example, if the ambient temperature is too low, the cooling medium may freeze, causing the spray system 3 to freeze and break. Or, the spray system 3 may be damaged and require repair. In these special circumstances, cooling the primary side fan 1 solely through the cooling medium is insufficient to meet the cooling requirements. Therefore, embodiments of this disclosure also provide some auxiliary cooling methods.

[0055] It should be noted that since the evaporative cooling air conditioning unit does not completely drain the cooling medium most of the time, it can effectively improve the energy efficiency level of the unit most of the time. Even in special circumstances where the cooling medium is drained, making it impossible to use the cooling medium in the spray system 3 to cool the primary side fan 1 for a short period of time, the energy efficiency level of the evaporative cooling air conditioning unit can still be effectively improved from the perspective of the overall operating time.

[0056] The above-mentioned auxiliary cooling methods will be described below.

[0057] Figure 4 is a schematic diagram of the structure of the third type of water evaporation cooling air conditioning unit provided in the embodiments of this disclosure. It should be noted that although Figure 4 is based on the first circulation mode of the cooling medium for the sake of illustration, all auxiliary cooling methods provided in this disclosure are also applicable to the second circulation mode.

[0058] Referring to Figure 4, in this embodiment, the cooling system 2 also includes a third pipe 24, a fourth pipe 25, and a cooling water tank 26.

[0059] The first end of the third pipe 24 and the first end of the fourth pipe 25 are respectively connected to the primary side fan 1, and the second end of the third pipe 24 and the second end of the fourth pipe 25 are respectively connected to the cooling water tank 26.

[0060] In the above implementation, a separate cooling water tank 26 is configured for the cooling system 2. The cooling water tank 26 contains antifreeze coolant, which can remain unfrozen at sub-zero temperatures, preventing damage to related components from freezing. The specifications of the antifreeze coolant can be selected according to the possible ambient temperature, and this disclosure does not impose any restrictions on this.

[0061] Under normal circumstances, the antifreeze coolant in the cooling water tank 26 is not used, and the third pipe 24, the fourth pipe 25, and the cooling water tank 26 are idle, without affecting the normal operation of the first pipe 21, the second pipe 22, the spray water pump assembly 31, and the cooling water pump assembly 23. Under special circumstances, the antifreeze coolant is circulated between the cooling water tank 26 and the primary side fan 1 through the third pipe 24 and the fourth pipe 25, thereby using the antifreeze coolant to cool the primary side fan 1, which can reduce the overall heat load of the evaporative cooling air conditioning unit and improve the energy efficiency level of the evaporative cooling air conditioning unit.

[0062] It should be noted that the circulation method of the antifreeze coolant through the third pipe 24 and the fourth pipe 25 at the primary side fan 1 is basically the same as the circulation method of the cooling medium through the first pipe 21 and the second pipe 22 at the primary side fan 1. This allows the use of either the spray pump assembly 31 of the spray system 3 or the cooling pump assembly 23 of the cooling system 2. In other embodiments, a separate backup pump assembly can be configured for the third pipe 24 and the fourth pipe 25 (see Figure 4). The working principle of the backup pump assembly is basically the same as that of the cooling pump assembly 23, and will not be elaborated here.

[0063] In order to prevent the third pipe 24, the fourth pipe 25 and the cooling water tank 26 from affecting other components when they are idle, in this embodiment, valves are installed at the third pipe 24 and the fourth pipe 25 respectively, and the valves are used to control the opening and closing of the third pipe 24 and the fourth pipe 25.

[0064] Optionally, the cooling water tank 26 is located inside the water tray 32 of the spray system 3 and is connected to the inner bottom surface of the water tray 32.

[0065] In the above implementation, the water tray 32 is used to hold the cooling medium. Placing the cooling water tank 26 inside the water tray 32 effectively saves internal space in the evaporative cooling air conditioning unit, making the internal layout of the evaporative cooling air conditioning unit more compact. In addition, it also facilitates the routing of the third pipe 24 and the fourth pipe 25 together with the first pipe 21 and the second pipe 22.

[0066] Figure 5 is a structural schematic diagram of the fourth type of water evaporation cooling air conditioning unit provided in the embodiments of this disclosure. It should be noted that although Figure 5 is based on the first circulation mode of the cooling medium for the sake of illustration, all auxiliary cooling methods provided in this disclosure are also applicable to the second circulation mode.

[0067] Referring to Figure 5, in this embodiment, the cooling system 2 also includes a cooling fan 27, which is arranged toward the primary side fan 1.

[0068] Under normal circumstances, cooling fan 27 is not used and remains idle, without affecting the normal operation of the first pipe 21, the second pipe 22, the spray water pump assembly 31, and the cooling water pump assembly 23. In special circumstances, cooling fan 27 is used to air-cool the primary side fan 1. Since the increased heat load from using cooling fan 27 to cool the primary side fan 1 is far lower than the increased heat load from using primary side airflow to cool the primary side fan 1, cooling fan 27 can reduce the overall heat load of the evaporative cooling air conditioning unit and improve its energy efficiency.

[0069] To further reduce the heat load caused by the cooling fan 27, the cooling fan 27 may optionally include fan blades 271, a transmission mechanism 272, and a motor 273. The fan blades 271 are close to the primary side fan 1, and the fan blades 271 are connected to the shaft of the motor 273 through the transmission mechanism 272. The motor 273 is located outside the primary side circulation channel (inner circulation channel) of the water evaporative cooling air conditioning unit, away from the primary side fan 1.

[0070] In the above implementation, fan blade 271 is located within the primary side circulation channel of the evaporative cooling air conditioning unit, adjacent to the primary side fan 1, and can generate cooling airflow to effectively cool the primary side fan 1. Motor 273 is located outside the primary side circulation channel of the evaporative cooling air conditioning unit, away from the primary side fan 1, and drives fan blade 271 to rotate via transmission mechanism 272. Because motor 273 is located outside the primary side circulation channel of the evaporative cooling air conditioning unit, the generated heat is conducted to the outside of the data center without affecting the internal temperature of the data center, thus not increasing the thermal load of the evaporative cooling air conditioning unit.

[0071] Optionally, the transmission mechanism 272 is a transmission shaft. One end of the transmission shaft is connected to the rotating shaft of the motor 273, and the other end of the transmission shaft is connected to the fan blade 271. The transmission shaft rotates together with the rotating shaft of the motor 273, thereby driving the fan blade 271 to rotate.

[0072] Figure 6 is a schematic diagram of the structure of the fifth type of water evaporation cooling air conditioning unit provided in the embodiments of this disclosure. It should be noted that although Figure 6 is based on the first circulation mode of the cooling medium for the sake of illustration, all auxiliary cooling methods provided in this disclosure are also applicable to the second circulation mode.

[0073] Referring to Figure 6, in this embodiment, the cooling system 2 also includes a heat insulation cover 28, which is detachably mounted on the outer wall of the primary side fan 1.

[0074] Under normal circumstances, the insulation cover 28 is installed on the outer wall of the primary side fan 1, thereby isolating the heat generated by the primary side fan 1 and preventing the primary side fan 1 from increasing its thermal load. In special circumstances, the insulation cover 28 is removed, thereby utilizing the primary side airflow to dissipate heat from the primary side fan 1. It should be noted that since the time spent in special circumstances is very short, even after the insulation cover 28 is removed, which may cause the primary side fan 1 to experience a thermal load, the energy efficiency level of the evaporative cooling air conditioning unit can still be effectively improved from the perspective of the overall operating time of the unit.

[0075] Figure 7 is a structural schematic diagram of the sixth type of water evaporation cooling air conditioning unit provided in the embodiments of this disclosure. It should be noted that although Figure 7 is based on the first circulation mode of the cooling medium for the sake of illustration, all auxiliary cooling methods provided in this disclosure are also applicable to the second circulation mode.

[0076] Referring to Figure 7, in this embodiment, the cooling system 2 includes a heat pipe 29. The evaporation section of the heat pipe 29 is connected to the outer wall of the primary side fan 1, and the condensation section of the heat pipe 29 is located in the secondary side circulation channel (external circulation channel) of the water evaporation cooling air conditioning unit, away from the primary side fan 1.

[0077] Since heat pipe 29 does not affect the cooling of the primary-side fan 1 assembly under normal conditions, it can both assist in the cooling of the primary-side fan 1 and provide independent cooling for it under special circumstances. The evaporation section is located within the primary-side circulation channel of the evaporative cooling air conditioning unit. It absorbs heat from the primary-side fan 1, causing the liquid within heat pipe 29 to boil and become steam. This heated steam then moves from the evaporation section to the condensation section. Because the condensation section is located within the secondary-side circulation channel of the evaporative cooling air conditioning unit, heat can be conducted to the outside of the data center via the secondary-side airflow without affecting the internal temperature of the data center. This prevents an increase in the thermal load of the evaporative cooling air conditioning unit.

[0078] It should be noted that the above-mentioned auxiliary cooling methods can individually assist in cooling the primary side fan 1, or they can be combined with each other to assist in cooling the primary side fan 1. This application does not impose any restrictions on this.

[0079] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A water evaporative cooling air conditioning unit, characterized in that, The system includes a primary side fan (1), a cooling system (2), and a spray system (3); the primary side fan (1) is a water-cooled fan and is spaced apart from the spray system (3), and the primary side fan (1) is located inside the data center; the cooling system (2) includes a first pipe (21) and a second pipe (22), the first end of the first pipe (21) and the first end of the second pipe (22) are respectively connected to the primary side fan (1), and the second end of the first pipe (21) and the second end of the second pipe (22) are respectively connected to the spray system (3); the first pipe (21) and the second pipe (22) are configured The cooling medium in the spray system (3) is circulated between the spray system (3) and the primary side fan (1) to cool the primary side fan (1), thereby reducing the heat load of the primary side fan (1) and improving the energy efficiency of the water evaporation cooling air conditioning unit; the first end of the first pipe (21) is connected to the primary side fan (1), the second end of the first pipe (21) is connected to the water pan (32) of the spray system (3), the first end of the second pipe (22) is connected to the primary side fan (1), and the second end of the second pipe (22) is connected to the water pan (32).

2. The water evaporative cooling air conditioning unit according to claim 1, characterized in that, The second end of the first pipe (21) is connected to the inlet of the spray pump assembly (31) of the spray system (3), and the second end of the second pipe (22) is connected to the outlet of the spray pump assembly (31) of the spray system (3).

3. The water evaporative cooling air conditioning unit according to claim 1, characterized in that, The cooling system (2) also includes a cooling water pump assembly (23); the cooling water pump assembly (23) is connected between the first end and the second end of the second pipe (22).

4. The water evaporative cooling air conditioning unit according to claim 3, characterized in that, The cooling water pump assembly (23) includes a first cooling water pump (231) and a second cooling water pump (232); the first cooling water pump (231) and the second cooling water pump (232) are connected in parallel between the first end and the second end of the second pipe (22).

5. The water evaporative cooling air conditioning unit according to any one of claims 1-4, characterized in that, The cooling system (2) further includes a third pipe (24), a fourth pipe (25) and a cooling water tank (26); the first end of the third pipe (24) and the first end of the fourth pipe (25) are respectively connected to the primary side fan (1), and the second end of the third pipe (24) and the second end of the fourth pipe (25) are respectively connected to the cooling water tank (26).

6. The water evaporative cooling air conditioning unit according to claim 5, characterized in that, The cooling water tank (26) is located inside the water pan (32) of the spray system (3) and is connected to the inner bottom surface of the water pan (32).

7. The water evaporative cooling air conditioning unit according to any one of claims 1-4, characterized in that, The cooling system (2) also includes a cooling fan (27); the cooling fan (27) is arranged toward the primary side fan (1).

8. The water evaporative cooling air conditioning unit according to claim 7, characterized in that, The cooling fan (27) includes a fan blade (271), a transmission mechanism (272), and a motor (273); the fan blade (271) is close to the primary side fan (1), and the fan blade (271) is connected to the shaft of the motor (273) through the transmission mechanism (272); the motor (273) is located outside the primary side circulation channel of the water evaporation cooling air conditioning unit.

9. The water evaporative cooling air conditioning unit according to any one of claims 1-4, characterized in that, The cooling system (2) also includes a heat insulation cover (28); the heat insulation cover (28) is detachably installed on the outer wall of the primary side fan (1).

10. The water evaporative cooling air conditioning unit according to any one of claims 1-4, characterized in that, The cooling system (2) includes a heat pipe (29); the evaporation section of the heat pipe (29) is connected to the outer wall of the primary side fan (1), and the condensation section of the heat pipe (29) is located in the secondary side circulation channel of the water evaporation cooling air conditioning unit.

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