Indirect evaporation liquid cooling device and liquid cooling container data center

Abstract

The invention relates to an indirect evaporation liquid cooling device which comprises a pre-cooling module, a cold source supply unit, a plate heat exchanger, a cooling capacity storage and output unit and a controller. The output end of the cold source supply unit communicates with a cold end inlet of the plate heat exchanger, and the input end of the cold source supply unit communicates with a cold end outlet of the plate heat exchanger; a cold liquid input end of the cold energy storage output unit is communicated with a hot end outlet of the plate heat exchanger, a cold liquid output end of the cold energy storage output unit is communicated with a liquid inlet end of an external inter-column air conditioner, and a hot liquid input end of the cold energy storage output unit is communicated with a liquid outlet end of the external inter-column air conditioner. The hot liquid output end of the cooling capacity storage output unit communicates with a hot end inlet of the plate heat exchanger, the input end of the pre-cooling cooling module communicates with the cold liquid input end and the hot liquid input end of the cooling capacity storage output unit, and the output end of the pre-cooling cooling module communicates with the hot end inlet of the plate heat exchanger. The power consumption of the container data center is greatly reduced while the cooling requirement of the machine room is met.

Description

Technical Field

[0001] The present invention relates to the technical field of data center refrigeration equipment and application occasions, and in particular to an indirect evaporative liquid cooling device and a liquid-cooled container data center. Background Art

[0002] Container data center rooms are increasingly used in practical applications due to their economical, convenient and fast deployment characteristics. Heat dissipation and energy saving for container data centers are becoming increasingly important. At present, conventional container data center cooling systems mostly use air-cooled air conditioning, which does not fully utilize natural cold sources, the temperature difference between daytime and nighttime, and the cooling capacity at night. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an indirect evaporative liquid cooling device and a liquid-cooled container data center, which adopts a liquid storage tank. At night, the low ambient temperature is used to store cold energy in the liquid storage tank. During the day, the ambient temperature is high and more cold energy is needed to cool the computer room. The cold energy in the liquid storage tank is released so that the temperature of the computer room during the day and at night reaches the demand balance. At the same time, a plate heat exchanger is used for heat exchange, so that the entire computer room is isolated from the outside to prevent pollution of the computer room. A pre-cooling module and a natural cold source supply unit are provided to provide cold energy for heat cooling and heat exchange in the computer room. While meeting the cooling requirements of the computer room, the power consumption of the container data center is greatly reduced.

[0004] The technical solution of the implementation case of the present invention is as follows:

[0005] An indirect evaporative liquid cooling device comprises a precooling module, a cold source supply unit, a plate heat exchanger, a cold storage output unit and a controller, wherein the output end of the cold source supply unit is connected to the cold end inlet of the plate heat exchanger through a pipeline, the input end of the cold source supply unit is connected to the cold end outlet of the plate heat exchanger through a pipeline, the cold liquid input end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the cold liquid output end of the cold storage output unit is connected to the liquid inlet end of an external inter-row air conditioner through a pipeline. The hot liquid input end of the cold storage output unit is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the hot liquid output end of the cold storage output unit is connected to the hot end inlet of the plate heat exchanger through a pipeline, the input end of the pre-cooling and cooling module is connected to the cold liquid input end and the hot liquid input end of the cold storage output unit through a pipeline, the output end of the pre-cooling and cooling module is connected to the hot end inlet of the plate heat exchanger through a pipeline, and the controller is electrically connected to the pre-cooling and cooling module, the cold source supply unit, and the cold storage output unit.

[0006] Preferably, the cold storage and output unit includes a liquid storage tank, a one-way pressure relief valve, a check valve and a first liquid pump. The conducting end of the check valve is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the check end of the check valve is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the liquid storage tank is connected to the hot end outlet of the plate heat exchanger through a pipeline, the liquid outlet of the liquid storage tank is connected to the liquid inlet end of the first liquid pump through a pipeline, the liquid outlet end of the first liquid pump is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline, and the one-way pressure relief valve is installed at the air outlet of the liquid storage tank.

[0007] Preferably, the pre-cooling module includes a second liquid pump, a third liquid pump and a surface cooler, the liquid inlet end of the second liquid pump is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the liquid outlet end of the second liquid pump is connected to the liquid inlet of the surface cooler through a pipeline, the liquid outlet of the surface cooler is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet end of the third liquid pump is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the liquid outlet end of the third liquid pump is connected to the liquid inlet of the surface cooler.

[0008] Preferably, the cold source supply unit includes a water distributor, a filler, a water receiving pan, a water storage tank, a fourth liquid pump and a fan, the filler is located at the air inlet of the cold source supply unit, the water distributor is located above the filler, the water receiving pan is located below the filler, the fan is located above the filler, the water storage tank is located below the water receiving pan and is connected to the water receiving pan through a pipe, the liquid inlet end of the fourth liquid pump is connected to the water storage tank through a pipe, and the liquid outlet end of the fourth liquid pump is connected to the hot end inlet of the plate heat exchanger.

[0009] The present invention also provides a liquid-cooled container data center, comprising an indirect evaporative liquid cooling device, a first container, a second container, a fire extinguishing cabinet, a server cabinet, an inter-row air conditioner, a battery cabinet and a power supply cabinet, wherein the indirect evaporative liquid cooling device is arranged in the first container, and the fire extinguishing cabinet, the server cabinet, the inter-row air conditioner, the battery cabinet and the power supply cabinet are arranged in the second container according to the data center layout specification, the indirect evaporative liquid cooling device in the first container is connected to the inter-row air conditioner in the second container through a pipeline, and the length, width and height of the first container are the same as the length, width and height of the second container.

[0010] Preferably, the indirect evaporative liquid cooling device comprises a precooling module, a cold source supply unit, a plate heat exchanger, a cold storage output unit and a controller, the output end of the cold source supply unit is connected to the cold end inlet of the plate heat exchanger through a pipeline, the input end of the cold source supply unit is connected to the cold end outlet of the plate heat exchanger through a pipeline, the cold liquid input end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the cold liquid output end of the cold storage output unit is connected to the liquid inlet end of the inter-row air conditioner through a pipeline. The hot liquid input end of the cold storage output unit is connected with the liquid outlet end of the inter-row air conditioner through a pipeline, the hot liquid output end of the cold storage output unit is connected with the hot end inlet of the plate heat exchanger through a pipeline, the input end of the pre-cooling and cooling module is connected with the cold liquid input end and the hot liquid input end of the cold storage output unit through a pipeline, the output end of the pre-cooling and cooling module is connected with the hot end inlet of the plate heat exchanger through a pipeline, and the controller is electrically connected with the pre-cooling and cooling module, the cold source supply unit, and the cold storage output unit.

[0011] Preferably, the cold storage and output unit includes a liquid storage tank, a one-way pressure relief valve, a check valve and a first liquid pump. The conducting end of the check valve is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the check end of the check valve is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the liquid storage tank is connected to the hot end outlet of the plate heat exchanger through a pipeline, the liquid outlet of the liquid storage tank is connected to the liquid inlet end of the first liquid pump through a pipeline, the liquid outlet end of the first liquid pump is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline, and the one-way pressure relief valve is installed at the air outlet of the liquid storage tank.

[0012] Preferably, the pre-cooling module includes a second liquid pump, a third liquid pump and a surface cooler, the liquid inlet end of the second liquid pump is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the liquid outlet end of the second liquid pump is connected to the liquid inlet of the surface cooler through a pipeline, the liquid outlet of the surface cooler is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet end of the third liquid pump is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the liquid outlet end of the third liquid pump is connected to the liquid inlet of the surface cooler.

[0013] Preferably, the cold source supply unit includes a water distributor, a filler, a water receiving pan, a water storage tank, a fourth liquid pump and a fan, the filler is located at the air inlet of the cold source supply unit, the water distributor is located above the filler, the water receiving pan is located below the filler, the fan is located above the filler, the water storage tank is located below the water receiving pan and is connected to the water receiving pan through a pipe, the liquid inlet end of the fourth liquid pump is connected to the water storage tank through a pipe, and the liquid outlet end of the fourth liquid pump is connected to the hot end inlet of the plate heat exchanger.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By setting up a liquid storage tank, the cold energy can be stored in the liquid storage tank at night by taking advantage of the low ambient temperature. During the day, the ambient temperature is high and more cold energy is needed to cool the computer room. The cold energy in the liquid storage tank is released so that the temperature of the computer room reaches the demand balance during the day and night. By setting up a plate heat exchanger for heat exchange, the entire computer room is isolated from the external environment, avoiding greater pollution of the computer room. By setting up a pre-cooling module and a natural cold source supply unit, cold energy is provided for heat cooling and heat exchange in the computer room. While meeting the cooling requirements of the computer room, the power consumption of the container data center is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structural principle of an indirect evaporative liquid cooling device in the present invention;

[0017] Figure 2 A schematic diagram of the structural principle of an indirect evaporative liquid cooling device in the present invention operating in winter;

[0018] Figure 3 It is a schematic diagram of the structural principle of an indirect evaporative liquid cooling device in the present invention operating in summer;

[0019] Figure 4 This is a schematic diagram of the structure of a liquid-cooled container data center in the present invention;

[0020] 100. Indirect evaporative liquid cooling device; 11. Check valve; 12. First liquid pump; 13. Liquid storage tank; 14. One-way pressure relief valve; 15. Fluorine pump; 21. Fan; 22. Water distributor; 23. Filler; 24. Water receiving tray; 25. Water storage tank; 26. Fourth liquid pump; 27. First water receiving tray; 31. Third liquid pump; 32. Second liquid pump; 33. Surface cooler; 40. Plate heat exchanger; 50. Row air conditioner; 60. First container; 70. Second container. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] like Figure 1 As shown, Figure 1 The schematic diagram of the structural principle of an indirect evaporative liquid cooling device in the present invention; an indirect evaporative liquid cooling device, comprising a precooling module, a cold source supply unit, a plate heat exchanger, a cold storage output unit and a controller, wherein the output end of the cold source supply unit is connected to the cold end inlet of the plate heat exchanger through a pipeline, the input end of the cold source supply unit is connected to the cold end outlet of the plate heat exchanger through a pipeline, the cold liquid input end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the cold liquid output end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline. The cold storage output unit is connected to the liquid inlet of the external inter-row air conditioner, the hot liquid input of the cold storage output unit is connected to the liquid outlet of the external inter-row air conditioner through a pipeline, the hot liquid output of the cold storage output unit is connected to the hot end inlet of the plate heat exchanger through a pipeline, the input of the pre-cooling and cooling module is connected to the cold liquid input and hot liquid input of the cold storage output unit through a pipeline, the output of the pre-cooling and cooling module is connected to the hot end inlet of the plate heat exchanger through a pipeline, and the controller is electrically connected to the pre-cooling and cooling module, the cold source supply unit, and the cold storage output unit.

[0025] The cold storage output unit stores natural cold during the relatively low temperature period at night, and releases the stored natural cold during the relatively high temperature period during the day. The cold output end of the cold storage output unit is connected to the data center computer room to transport the stored natural cold to the data center computer room; the cold source supply unit uses natural water and natural air to generate cold sources. The cold source supply unit transfers the cold source to the cold storage output unit through a plate heat exchanger for storage. In summer, the pre-cooling and cooling module can provide natural wind with a lower temperature, so that the cold source supply unit generates a cold source with a lower temperature. In this way, the cold storage output unit can store more cold. In winter, the pre-cooling and cooling module can also directly heat and cool the hot air of the data center with the natural cold source. The controller realizes operation in different seasons by controlling the components in the cold storage output unit, the cold source supply unit, and the pre-cooling and cooling module.

[0026] As for how the cold storage and output unit realizes storage and output of cold energy, what is its specific mechanism composed of? Specifically, the cold storage and output unit includes a liquid storage tank 13, a one-way pressure relief valve 14, a check valve 11 and a first liquid pump 12. The conducting end of the check valve 11 is connected to the liquid outlet end of the external inter-row air conditioner 50 through a pipeline, the check end of the check valve 11 is connected to the hot end inlet of the plate heat exchanger 40 through a pipeline, the liquid inlet of the liquid storage tank 13 is connected to the hot end outlet of the plate heat exchanger 40 through a pipeline, the liquid outlet of the liquid storage tank 13 is connected to the liquid inlet end of the first liquid pump 12 through a pipeline, the liquid outlet end of the first liquid pump 12 is connected to the liquid inlet end of the external inter-row air conditioner 50 through a pipeline, and the one-way pressure relief valve 14 is installed at the air outlet of the liquid storage tank 13.

[0027] How does the pre-cooling and cooling module realize cooling of external natural wind in high-temperature seasons and cooling of high-temperature circulating water in low-temperature seasons? What does its specific mechanism consist of? Specifically, the pre-cooling and cooling module includes a second liquid pump 32, a third liquid pump 31 and a surface cooler 33. The liquid inlet end of the second liquid pump 32 is connected to the liquid outlet end of the external inter-row air conditioner 50 through a pipeline, the liquid outlet end of the second liquid pump 32 is connected to the liquid inlet of the surface cooler 33 through a pipeline, the liquid outlet of the surface cooler 33 is connected to the hot end inlet of the plate heat exchanger 40 through a pipeline, the liquid inlet end of the third liquid pump 31 is connected to the hot end outlet of the plate heat exchanger 40 through a pipeline, and the liquid outlet end of the third liquid pump 31 is connected to the liquid inlet of the surface cooler 33.

[0028] As for how the cold source supply unit obtains cold energy through natural wind and natural water, what does its specific mechanism consist of? Specifically, the cold source supply unit includes a water distributor 22, a filler 23, a water receiving tray 24, a water storage tank 25, a fourth liquid pump 26 and a fan 21. The filler 23 is located at the air inlet of the cold source supply unit, the water distributor 22 is located above the filler 23, the water receiving tray 24 is located below the filler 23, the fan 21 is located at the upper part of the filler 23, the water storage tank 25 is located below the water receiving tray 24 and is connected to the water receiving tray 24 through a pipeline, the liquid inlet end of the fourth liquid pump 26 is connected to the water storage tank 25 through a pipeline, and the liquid outlet end of the fourth liquid pump 26 is connected to the hot end inlet of the plate heat exchanger 40.

[0029] The following introduces how the controller controls the operation of the indirect evaporative liquid cooling device in winter and summer seasons based on the specific system structure of the device.

[0030] like Figure 2 As shown, Figure 2It is a schematic diagram of the structural principle of an indirect evaporative liquid cooling device in the present invention operating in winter; in winter, the controller controls the second liquid pump to turn on and the third liquid pump to turn off. The second liquid pump transports the coolant with high temperature of the inter-row air conditioner to the surface cooler. The natural wind with low external temperature reaches the surface cooler and exchanges heat with the coolant in the surface cooler. The high-temperature coolant is cooled and transported to the plate heat exchanger. The external natural wind is heated and reaches the filler, and evaporates and exchanges heat with the circulating water in the filler. The circulating water evaporates and cools and is collected in the water receiving tray and stored in the water storage tank. The fourth liquid pump draws the low-temperature cooling water in the water storage tank and transports it to the plate heat exchanger to exchange heat with the high-temperature cooling liquid. The cooling liquid is cooled and transported to the liquid storage tank. The cooling water is heated and transported to the water distributor to distribute water to the filler. The first liquid pump transports the cooling liquid in the liquid storage tank to the inter-row air conditioner to exchange heat and cool the hot air in the data center computer room. The controller controls the flow of the first liquid pump according to the external temperature. When the external ambient temperature is low, the flow of the first liquid pump decreases. At this time, because of the small flow, the temperature of the coolant in the storage tank is low after heat exchange in the plate heat exchanger. At this time, the temperature of the coolant in the storage tank is low, and the stored cold capacity is large. When the external ambient temperature is high, the flow of the first liquid pump increases. At this time, the coolant with low temperature in the storage tank is released at a large flow rate to exchange heat with the inter-row air conditioner in the machine room. Due to the large flow rate, the heat exchange time in the plate heat exchanger is short. At the same time, the relative temperature of the cooling water in the water storage tank is also higher. At this time, the temperature of the coolant returning to the storage tank is also higher. The coolant with low temperature in the storage tank is released during the day, and the coolant with relatively high temperature in the storage tank is released at night. Since the ambient temperature is low at night, it can meet the temperature requirements of the machine room.

[0031] like Figure 3 As shown, Figure 3This is a schematic diagram of the structural principle of an indirect evaporative liquid cooling device in the present invention operating in summer; in the summer season, the controller controls the second liquid pump to close and the third liquid pump to start, the third liquid pump transports the low-temperature cooling liquid after heat exchange to the surface cooler, the natural wind with high external temperature reaches the surface cooler, exchanges heat with the cooling liquid in the surface cooler, the low-temperature cooling liquid is heated up and transported to the plate heat exchanger, the external natural wind cools down and reaches the filler, undergoes an isenthalpic process with the circulating water in the filler, the circulating water is cooled and collected in the water receiving tray, and is stored in the water storage tank, the fourth liquid pump draws the low-temperature cooling water in the water storage tank and transports it to the plate heat exchanger, exchanges heat with the high-temperature cooling liquid output from the computer room, the cooling liquid is heated up and transported to the liquid storage tank, the cooling water is heated and transported to the water distributor, water is distributed to the filler, the first liquid pump transports the cooling liquid in the liquid storage tank to the inter-row air conditioner, heat exchanges and cools the hot air in the computer room of the data center. The controller controls the flow of the first liquid pump according to the external temperature. When the external ambient temperature is low, the flow of the first liquid pump decreases. At this time, because of the small flow, the temperature of the coolant in the storage tank is low after heat exchange in the plate heat exchanger. At this time, the temperature of the coolant in the storage tank is low, and the stored cold capacity is large. When the external ambient temperature is high, the flow of the first liquid pump increases. At this time, the coolant with low temperature in the storage tank is released at a large flow rate to exchange heat with the inter-row air conditioner in the machine room. Due to the large flow rate, the heat exchange time in the plate heat exchanger is short. At the same time, the relative temperature of the cooling water in the water storage tank is also higher. At this time, the temperature of the coolant returning to the storage tank is also higher. The coolant with low temperature in the storage tank is released during the day, and the coolant with relatively high temperature in the storage tank is released at night. Since the ambient temperature is low at night, it can meet the temperature requirements of the machine room.

[0032] The present invention also provides a liquid cooling container data center based on the use of an indirect evaporative cooling device, such as Figure 4 As shown, Figure 4 It is a structural schematic diagram of a liquid-cooled container data center in the present invention; a liquid-cooled container data center includes an indirect evaporative liquid cooling device 100, a first container 60, a second container 70, a fire extinguishing cabinet, a server cabinet, an inter-row air conditioner 50, a battery cabinet and a power supply cabinet, wherein the indirect evaporative liquid cooling device 100 is arranged in the first container 60, and the fire extinguishing cabinet, the server cabinet, the inter-row air conditioner 50, the battery cabinet and the power supply cabinet are arranged in the second container 70 according to the data center layout specification, and the indirect evaporative liquid cooling device 100 in the first container 60 is connected to the inter-row air conditioner 50 in the second container 70 through a pipeline, and the length, width and height of the first container 60 are the same as the length, width and height of the second container 70.

[0033] The liquid-cooled container data center is a data center that uses containers. It can be easily moved, its computer room container is modular, and its cooling system container is modular. The container data center includes multiple containers of unified standards. In the present invention, there are two containers, one container is used as a computer room function, and the other container is used for cooling. In the computer room container, there are all the necessary equipment of the computer room data center, including server cabinets, inter-row air conditioners, fire cabinets, battery cabinets and power cabinets, etc., which constitute the computer room. In the cold source container, the above-mentioned indirect evaporative liquid cooling device is integrated in the container, and the cold source is transported to the computer room container through a pipeline to realize cooling of the computer room.

[0034] For the specific structure of the indirect evaporative liquid cooling device, specifically, as Figure 1 As shown, an indirect evaporative liquid cooling device includes a precooling module, a cold source supply unit, a plate heat exchanger, a cold storage output unit and a controller, wherein the output end of the cold source supply unit is connected to the cold end inlet of the plate heat exchanger through a pipeline, the input end of the cold source supply unit is connected to the cold end outlet of the plate heat exchanger through a pipeline, the cold liquid input end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the cold liquid output end of the cold storage output unit is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline. The hot liquid input end of the cold storage output unit is connected with the liquid outlet end of the external inter-row air conditioner through a pipeline, the hot liquid output end of the cold storage output unit is connected with the hot end inlet of the plate heat exchanger through a pipeline, the input end of the pre-cooling and cooling module is connected with the cold liquid input end and the hot liquid input end of the cold storage output unit through a pipeline, the output end of the pre-cooling and cooling module is connected with the hot end inlet of the plate heat exchanger through a pipeline, and the controller is electrically connected with the pre-cooling and cooling module, the cold source supply unit, and the cold storage output unit.

[0035] The cold storage output unit stores natural cold during the relatively low temperature period at night, and releases the stored natural cold during the relatively high temperature period during the day. The cold output end of the cold storage output unit is connected to the data center computer room to transport the stored natural cold to the data center computer room; the cold source supply unit uses natural water and natural air to generate cold sources. The cold source supply unit transfers the cold source to the cold storage output unit through a plate heat exchanger for storage. In summer, the pre-cooling and cooling module can provide natural wind with a lower temperature, so that the cold source supply unit generates a cold source with a lower temperature. In this way, the cold storage output unit can store more cold. In winter, the pre-cooling and cooling module can also directly heat and cool the hot air of the data center with the natural cold source. The controller realizes operation in different seasons by controlling the components in the cold storage output unit, the cold source supply unit, and the pre-cooling and cooling module.

[0036] As for how the cold storage and output unit realizes storage and output of cold energy, what does its specific mechanism consist of? Specifically, the cold storage and output unit includes a liquid storage tank, a one-way pressure relief valve, a check valve and a first liquid pump. The conducting end of the check valve is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the check end of the check valve is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the liquid storage tank is connected to the hot end outlet of the plate heat exchanger through a pipeline, the liquid outlet of the liquid storage tank is connected to the liquid inlet end of the first liquid pump through a pipeline, the liquid outlet end of the first liquid pump is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline, and the one-way pressure relief valve is installed at the air outlet of the liquid storage tank.

[0037] How does the pre-cooling and cooling module realize cooling of external natural wind in high-temperature seasons and cooling of high-temperature circulating water in low-temperature seasons? What does its specific mechanism consist of? Specifically, the pre-cooling and cooling module includes a second liquid pump, a third liquid pump and a surface cooler. The liquid inlet end of the second liquid pump is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the liquid outlet end of the second liquid pump is connected to the liquid inlet of the surface cooler through a pipeline, the liquid outlet of the surface cooler is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet end of the third liquid pump is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the liquid outlet end of the third liquid pump is connected to the liquid inlet of the surface cooler.

[0038] As for how the cold source supply unit obtains cold energy through natural wind and natural water, what does its specific mechanism consist of? Specifically, the cold source supply unit includes a water distributor, a filler, a water receiving pan, a water storage tank, a fourth liquid pump and a fan. The filler is located at the air inlet of the cold source supply unit, the water distributor is located above the filler, the water receiving pan is located below the filler, the fan is located above the filler, the water storage tank is located below the water receiving pan and is connected to the water receiving pan through a pipe, the liquid inlet end of the fourth liquid pump is connected to the water storage tank through a pipe, and the liquid outlet end of the fourth liquid pump is connected to the hot end inlet of the plate heat exchanger.

[0039] The following introduces how the controller controls the operation of the indirect evaporative liquid cooling device in winter and summer seasons based on the specific system structure of the device.

[0040] like Figure 2As shown, in the winter season, the controller controls the second liquid pump to turn on and the third liquid pump to turn off. The second liquid pump transports the high-temperature coolant of the inter-row air-conditioning to the surface cooler. The natural wind with low external temperature reaches the surface cooler and exchanges heat with the coolant in the surface cooler. The high-temperature coolant is cooled and transported to the plate heat exchanger. The external natural wind is heated up and reaches the filler, where it evaporates and exchanges heat with the circulating water in the filler. The circulating water evaporates and cools down and is collected in the water receiving tray and stored in the water storage tank. The fourth liquid pump draws the low-temperature cooling water in the water storage tank and transports it to the plate heat exchanger to exchange heat with the high-temperature cooling liquid. The cooling liquid is cooled and transported to the liquid storage tank. The cooling water is heated up and transported to the water distributor to distribute water to the filler. The first liquid pump transports the cooling liquid in the liquid storage tank to the inter-row air-conditioning to exchange heat and cool the hot air in the data center computer room. The controller controls the flow of the first liquid pump according to the external temperature. When the external ambient temperature is low, the flow of the first liquid pump decreases. At this time, because of the small flow, the temperature of the coolant in the storage tank is low after heat exchange in the plate heat exchanger. At this time, the temperature of the coolant in the storage tank is low, and the stored cold capacity is large. When the external ambient temperature is high, the flow of the first liquid pump increases. At this time, the coolant with low temperature in the storage tank is released at a large flow rate to exchange heat with the inter-row air conditioner in the machine room. Due to the large flow rate, the heat exchange time in the plate heat exchanger is short. At the same time, the relative temperature of the cooling water in the water storage tank is also higher. At this time, the temperature of the coolant returning to the storage tank is also higher. The coolant with low temperature in the storage tank is released during the day, and the coolant with relatively high temperature in the storage tank is released at night. Since the ambient temperature is low at night, it can meet the temperature requirements of the machine room.

[0041] like Figure 3As shown, in the summer season, the controller controls the second liquid pump to close and the third liquid pump to start. The third liquid pump transports the low-temperature coolant after heat exchange to the surface cooler. The natural wind with high external temperature reaches the surface cooler and exchanges heat with the coolant in the surface cooler. The low-temperature coolant is heated up and transported to the plate heat exchanger. The external natural wind cools down and reaches the filler, undergoes an isenthalpic process with the circulating water in the filler. The circulating water is cooled and collected in the water receiving tray and stored in the water storage tank. The fourth liquid pump draws the low-temperature cooling water in the water storage tank and transports it to the plate heat exchanger to exchange heat with the high-temperature coolant output from the computer room. The coolant is cooled down and transported to the liquid storage tank. The cooling water is heated up and transported to the water distributor to distribute water to the filler. The first liquid pump transports the coolant in the liquid storage tank to the inter-row air conditioner to heat exchange and cool the hot air in the computer room of the data center. The controller controls the flow of the first liquid pump according to the external temperature. When the external ambient temperature is low, the flow of the first liquid pump decreases. At this time, because of the small flow, the temperature of the coolant in the storage tank is low after heat exchange in the plate heat exchanger. At this time, the temperature of the coolant in the storage tank is low, and the stored cold capacity is large. When the external ambient temperature is high, the flow of the first liquid pump increases. At this time, the coolant with low temperature in the storage tank is released at a large flow rate to exchange heat with the inter-row air conditioner in the machine room. Due to the large flow rate, the heat exchange time in the plate heat exchanger is short. At the same time, the relative temperature of the cooling water in the water storage tank is also higher. At this time, the temperature of the coolant returning to the storage tank is also higher. The coolant with low temperature in the storage tank is released during the day, and the coolant with relatively high temperature in the storage tank is released at night. Since the ambient temperature is low at night, it can meet the temperature requirements of the machine room.

[0042] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An indirect evaporative liquid cooling device, characterized in that: The system comprises a precooling module, a cold source supply unit, a plate heat exchanger, a cold storage output unit and a controller. The output end of the cold source supply unit is connected to the cold end inlet of the plate heat exchanger through a pipeline, the input end of the cold source supply unit is connected to the cold end outlet of the plate heat exchanger through a pipeline, the cold liquid input end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline, the cold liquid output end of the cold storage output unit is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline, and the cold liquid storage output unit is connected to the liquid storage end of the external inter-row air conditioner through a pipeline. The hot liquid input end of the output unit is connected with the liquid outlet end of the external inter-row air conditioner through a pipeline, the hot liquid output end of the cold storage output unit is connected with the hot end inlet of the plate heat exchanger through a pipeline, the input end of the pre-cooling and cooling module is connected with the cold liquid input end and the hot liquid input end of the cold storage output unit through a pipeline, the output end of the pre-cooling and cooling module is connected with the hot end inlet of the plate heat exchanger through a pipeline, and the controller is electrically connected to the pre-cooling and cooling module, the cold source supply unit, and the cold storage output unit.

2. The indirect evaporative liquid cooling device according to claim 1, characterized in that: The cold storage and output unit includes a liquid storage tank, a one-way pressure relief valve, a check valve and a first liquid pump. The conducting end of the check valve is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the check end of the check valve is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the liquid storage tank is connected to the hot end outlet of the plate heat exchanger through a pipeline, the liquid outlet of the liquid storage tank is connected to the liquid inlet end of the first liquid pump through a pipeline, the liquid outlet end of the first liquid pump is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline, and the one-way pressure relief valve is installed at the air outlet of the liquid storage tank.

3. The indirect evaporative liquid cooling device according to claim 2, characterized in that: The pre-cooling module includes a second liquid pump, a third liquid pump and a surface cooler. The liquid inlet of the second liquid pump is connected to the liquid outlet of the external inter-row air conditioner through a pipeline, the liquid outlet of the second liquid pump is connected to the liquid inlet of the surface cooler through a pipeline, the liquid outlet of the surface cooler is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the third liquid pump is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the liquid outlet of the third liquid pump is connected to the liquid inlet of the surface cooler.

4. The indirect evaporative liquid cooling device according to claim 3, characterized in that: The cold source supply unit includes a water distributor, a filler, a water receiving pan, a water storage tank, a fourth liquid pump and a fan. The filler is located at the air inlet of the cold source supply unit, the water distributor is located above the filler, the water receiving pan is located below the filler, the fan is located above the filler, the water storage tank is located below the water receiving pan and is connected to the water receiving pan through a pipeline, the liquid inlet end of the fourth liquid pump is connected to the water storage tank through a pipeline, and the liquid outlet end of the fourth liquid pump is connected to the hot end inlet of the plate heat exchanger.

5. A liquid-cooled container data center, characterized in that: It includes an indirect evaporative liquid cooling device, a first container, a second container, a fire extinguisher cabinet, a server cabinet, an inter-row air conditioner, a battery cabinet and a power supply cabinet. The indirect evaporative liquid cooling device is arranged in the first container, and the fire extinguisher cabinet, the server cabinet, the inter-row air conditioner, the battery cabinet and the power supply cabinet are arranged in the second container according to the data center layout specification. The indirect evaporative liquid cooling device in the first container is connected with the inter-row air conditioner in the second container through a pipeline, and the length, width and height of the first container are the same as the length, width and height of the second container.

6. The liquid cooling container data center according to claim 5, characterized in that: The indirect evaporative liquid cooling device comprises a precooling module, a cold source supply unit, a plate heat exchanger, a cold storage output unit and a controller. The output end of the cold source supply unit is connected to the cold end inlet of the plate heat exchanger through a pipeline, the input end of the cold source supply unit is connected to the cold end outlet of the plate heat exchanger through a pipeline, the cold liquid input end of the cold storage output unit is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the cold liquid output end of the cold storage output unit is connected to the liquid inlet end of the inter-row air conditioner through a pipeline. The hot liquid input end of the cold storage output unit is connected to the liquid outlet end of the inter-row air conditioner through a pipeline, the hot liquid output end of the cold storage output unit is connected to the hot end inlet of the plate heat exchanger through a pipeline, the input end of the pre-cooling and cooling module is connected to the cold liquid input end and the hot liquid input end of the cold storage output unit through a pipeline, the output end of the pre-cooling and cooling module is connected to the hot end inlet of the plate heat exchanger through a pipeline, and the controller is electrically connected to the pre-cooling and cooling module, the cold source supply unit, and the cold storage output unit.

7. The liquid cooling container data center according to claim 6, characterized in that: The cold storage and output unit includes a liquid storage tank, a one-way pressure relief valve, a check valve and a first liquid pump. The conducting end of the check valve is connected to the liquid outlet end of the external inter-row air conditioner through a pipeline, the check end of the check valve is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the liquid storage tank is connected to the hot end outlet of the plate heat exchanger through a pipeline, the liquid outlet of the liquid storage tank is connected to the liquid inlet end of the first liquid pump through a pipeline, the liquid outlet end of the first liquid pump is connected to the liquid inlet end of the external inter-row air conditioner through a pipeline, and the one-way pressure relief valve is installed at the air outlet of the liquid storage tank.

8. The liquid cooling container data center according to claim 7, characterized in that: The pre-cooling module includes a second liquid pump, a third liquid pump and a surface cooler. The liquid inlet of the second liquid pump is connected to the liquid outlet of the external inter-row air conditioner through a pipeline, the liquid outlet of the second liquid pump is connected to the liquid inlet of the surface cooler through a pipeline, the liquid outlet of the surface cooler is connected to the hot end inlet of the plate heat exchanger through a pipeline, the liquid inlet of the second liquid pump is connected to the hot end outlet of the plate heat exchanger through a pipeline, and the liquid outlet of the second liquid pump is connected to the liquid inlet of the surface cooler.

9. The liquid cooling container data center according to claim 8, characterized in that: The cold source supply unit includes a water distributor, a filler, a water receiving pan, a water storage tank, a fourth liquid pump and a fan. The filler is located at the air inlet of the cold source supply unit, the water distributor is located above the filler, the water receiving pan is located below the filler, the fan is located above the filler, the water storage tank is located below the water receiving pan and is connected to the water receiving pan through a pipeline, the liquid inlet end of the fourth liquid pump is connected to the water storage tank through a pipeline, and the liquid outlet end of the fourth liquid pump is connected to the hot end inlet of the plate heat exchanger.

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