Micro-modular dc cabin with natural cold source refrigeration

Abstract

The application discloses a kind of micro-modularization DC cabin using natural cold source refrigeration, including cooling unit and data center unit, data center unit includes multiple cabinets, server is installed in cabinet;Cooling unit includes air cooling unit, water cooling unit and circulating unit, circulating unit includes air intake main pipe, air outlet main pipe and first cold air pipe, first cold air pipe is connected with first connecting unit and second cold air pipe by first three-way valve, second cold air pipe is connected with second connecting unit and air intake main pipe by second three-way valve, heat exchange pipe is connected between first and second connecting unit;Water cooling unit includes water cooling tank for placing heat exchange pipe;Air cooling unit includes air inlet pipe, air outlet pipe and first heat exchanger connected between air inlet pipe and air outlet pipe, air inlet pipe also has spraying unit and filtering unit.The application realizes the cooling of data center cabinet using natural cold source refrigeration, to realize effective energy saving, reduce energy consumption.

Description

Technical Field

[0001] This application relates to the field of data centers, specifically to a micro-modular DC cabin that utilizes natural cold sources for cooling. Background Technology

[0002] The emergence of data centers has shifted our understanding from a quantitative, structured world to an uncertain and unstructured one. Like transportation and network communication, they are gradually becoming part of modern societal infrastructure, positively impacting many industries. However, data center development cannot rely solely on experience; it must be truly integrated with practice to ensure they realize their real value and drive rapid societal change. The main components of a data center consist of server racks and servers installed within them. Servers are the primary source of power consumption. Beyond the functional aspects, environmental support is crucial. Because data centers store and exchange massive amounts of data, maintaining suitable temperature and humidity is essential. Cooling accounts for a significant portion of a data center's overall power consumption. Therefore, reducing data center energy consumption is a common challenge for data centers worldwide. Besides building data centers in naturally cooler, high-latitude regions, utilizing natural cooling sources for circulating cooling is a key solution. By leveraging natural cooling to cool servers within racks, energy consumption is avoided, thus achieving energy savings. Summary of the Invention

[0003] Purpose of the invention: This application aims to overcome the shortcomings of the prior art and provide a micro-modular DC cabin that utilizes a natural cold source for cooling.

[0004] Technical Solution: A micro-modular DC cabin utilizing natural cold sources for cooling, comprising a cooling unit and a data center unit. The data center unit includes multiple server racks, each housing servers. The cooling unit includes an air-cooling unit, a water-cooling unit, and a circulation unit. The circulation unit includes an intake manifold, an exhaust manifold, and a first cold air duct. Multiple intake branch pipes are connected in parallel to the intake manifold, and multiple exhaust branch pipes are connected in parallel to the exhaust manifold. A first exhaust fan is located at the intake manifold, and a second exhaust fan is located at the exhaust manifold. The number of intake branch pipes equals the number of exhaust branch pipes, and the two correspond one-to-one. Each group of intake branch pipes... A cabinet is provided between the branch pipe and the outlet branch pipe. The first cold air duct is connected to the first connecting unit and the second cold air duct through a first three-way valve. The second cold air duct is connected to the second connecting unit and the main air inlet pipe through a second three-way valve. A heat exchange tube is connected between the first and second connecting units. The water-cooled unit includes a water-cooled box for placing the heat exchange tube. The air-cooled unit includes an air inlet pipe, an air outlet pipe, and a first heat exchanger connected between the air inlet pipe and the air outlet pipe. The main air outlet pipe and the first cold air duct are both connected to the first heat exchanger. A third induced draft fan is provided at the air inlet pipe. A spray unit and a filter unit are also provided at the air inlet pipe.

[0005] This allows for cooling circulation using naturally cooler air or water.

[0006] Furthermore, temperature sensors are provided at both the main air intake pipe and the main air exhaust pipe; each cabinet has more than two temperature sensors; each air intake branch pipe and each air exhaust branch pipe has a temperature sensor; and the water-cooled box and the air intake pipe have temperature sensors.

[0007] This allows for more accurate monitoring of the temperature in each section by incorporating temperature sensors at various locations.

[0008] Furthermore, both the first connecting unit and the second connecting unit include a connecting rigid pipe and a trapezoidal compartment connected to the connecting rigid pipe, and the heat exchange pipe is connected to the trapezoidal compartment; there are multiple heat exchange pipes, and the multiple heat exchange pipes are arranged in parallel to each other.

[0009] The circulating airflow is thus split at multiple heat exchange tubes and distributed to each heat exchange tube, thereby achieving a better cooling effect.

[0010] Furthermore, the heat exchange tubes are multiple, each heat exchange tube including multiple straight tubes and multiple bend joints. The number of straight tubes is one more than the number of bend joints. Two adjacent straight tubes are connected by a bend joint. The top straight tube extends out of the water-cooled box and is connected to the second connection unit. The bottom straight tube extends out of the water-cooled box and is connected to the first connection unit. All bend joints are located inside the water-cooled box.

[0011] Heat exchange tubes can be integrally molded or a combination of straight tubes and bends.

[0012] Furthermore, the water-cooling unit also includes a water storage tank and a second heat exchanger. A refrigeration unit and a temperature sensor are installed in the water storage tank. The water-cooling tank includes an inlet pipe, a first outlet pipe, and a second outlet pipe located above the first outlet pipe. A first water pump is provided at the inlet pipe. The inlet pipe is connected to the water storage tank. The water storage tank is connected to a first connecting water pipe. Both the first and second outlet pipes are connected to a third three-way valve. The third three-way valve is also connected to a second connecting water pipe. Both the first and second connecting water pipes are connected to the second heat exchanger. The second heat exchanger is also connected to an inlet pipe and an outlet pipe. A second water pump is provided at the inlet pipe.

[0013] Furthermore, the water-cooled box is rectangular in shape, the first and second water outlet pipes of the water-cooled box are located on the same side of the water-cooled box, the water inlet pipe is located at the bottom of the water-cooled box, and the top of the water-cooled box has vent holes.

[0014] Furthermore, the water-cooled box includes a front plate, a rear plate, a top plate, a bottom plate, a first side plate, and a second side plate. A plurality of parallel first partitions are fixed at the first side plate, and a plurality of parallel second partitions are fixed at the second side plate. The plurality of first partitions and the plurality of second partitions are alternately distributed. The end of the first partition connected to the first side plate is lower than the end away from the first side plate, and the end of the second partition connected to the second side plate is lower than the end away from the second side plate. The sum of the number of first partitions and second partitions is one less than the number of straight tubes in each heat exchange tube. There is one first partition or one second partition between two adjacent straight tubes.

[0015] Furthermore, two of the first partitions, located away from the first side plate, are connected to curved panels with an arc-shaped surface. These two first partitions have a first cavity, and the curved panels have a second cavity communicating with the first cavity. The curved panels also have multiple connecting holes linking the internal space of the water-cooled box to the second cavity. Two water pipes are fixed to the outer wall of the rear plate, each with a valve. The two water pipes correspond one-to-one with the two curved panels, and each water pipe communicates with the second cavity of the corresponding curved panel. Two mounting brackets are installed on the outer wall of the front plate, each corresponding one-to-one with the two curved panels. A light source and an image acquisition device are installed on each mounting bracket. The front plate is made of transparent material; or the front plate has two observation windows, each corresponding one-to-one with a mounting bracket, with each mounting bracket installed at one of the observation windows.

[0016] Preferably, the number of the first partitions is odd, and the topmost first partition and the middle first partition are connected to the curved panel.

[0017] Alternatively, the number of the first partitions is even, with the topmost first partition connected to the curved panel, and one of the two middle first partitions connected to the curved panel.

[0018] In addition, preferably, each mounting bracket has multiple image acquisition devices. Since the water-cooled box has a certain depth, the multiple image acquisition devices can acquire images from multiple angles, thus achieving a better acquisition perspective.

[0019] Furthermore, each curved panel has multiple rows of connecting holes, with the connecting holes in each row being evenly spaced; the rear panel is also equipped with two ultrasonic vibration units, with each ultrasonic vibration unit corresponding to one of the two curved panels.

[0020] Therefore, residual air bubbles can be removed using ultrasonic vibration.

[0021] Furthermore, a pressurizing air pump is also installed at the first connection unit to conduct a pressurization test on the sealing performance of the heat exchange tube.

[0022] Beneficial effects: The data center of this application is cooled by the outside cold air due to the natural cold source of the materials, and the circulating air is cooled by the water cooling unit. In the event that the natural cold source is insufficient, active cooling can be achieved to ensure sufficient cooling effect. Most of the cooling effect is provided by the natural cold source, thereby achieving temperature control of the data center. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall layout of a data center (DC) compartment.

[0024] Figure 2 This is a first-person view diagram of the water-cooled box and related piping.

[0025] Figure 3 This is a second-view schematic diagram of the water-cooled box and related piping.

[0026] Figure 4 A first-person view of the internal layout of the water-cooled box;

[0027] Figure 5 This is a second-view schematic diagram of the internal layout of the water-cooled box. Detailed Implementation

[0028] Reference numerals in the attached drawings: 1.1 Air inlet duct; 1.2 Air outlet duct; 1.3 First heat exchanger; 1.4 Third induced draft fan; 1.5 Spray unit; 1.6 Filtration unit; 2.1 Main air inlet duct; 2.2 First induced draft fan; 2.3 Inlet branch duct; 2.4 Main air outlet duct; 2.5 Second induced draft fan; 2.6 Air outlet branch duct; 3.1 First cold air duct; 3.2 Second cold air duct; 4.1 First three-way valve; 4.2 Second three-way valve; 5 Water-cooled box; 5.1 First partition; 5.1.1 First cavity; 5.2 Second partition; 5.3 Heat exchange tube; 5.3.1 First connecting unit; 5.3.2 Second connecting unit; 5.4 Curved panel; 5.4.1 Second cavity; 5.4.2 Connecting hole; 5.5 Pressurized air pump; 5.6 Mounting bracket; 5.7 Image acquisition unit; 5.8 Light source; 5.9 Water pipe valve; 5.10 Ultrasonic vibration unit; 5.11 Vent hole; 6.1 First water outlet pipe; 6.2 Second water outlet pipe; 6.3 Third three-way valve; 6.4 Water inlet pipe; 6.5 First water pump; 6.6 Second connecting water pipe; 6.7 Second heat exchanger; 6.8 Liquid inlet pipe; 6.9 Liquid outlet pipe; 6.10 Second water pump; 6.11 First connecting water pipe; 6.12 Water storage tank; 6.13 Refrigeration unit; 10 Cabinet.

[0029] As shown in the figure: A DC (Distributed Control) bay includes a cooling unit and a data center unit. The data center unit includes multiple server racks 10, each housing a server. The cooling unit includes an air-cooling unit, a water-cooling unit, and a circulation unit. The circulation unit includes an intake manifold 2.1, an exhaust manifold 2.4, and a first cold air duct 3.1. Multiple intake branch pipes 2.3 are connected in parallel to the intake manifold 2.1, and multiple exhaust branch pipes 2.6 are connected in parallel to the exhaust manifold 2.4. A first exhaust fan 2.2 is located at the intake manifold 2.1, and a second exhaust fan 2.5 is located at the exhaust manifold 2.4. The number of intake branch pipes 2.3 is equal to the number of exhaust branch pipes 2.6, and they correspond one-to-one. Each group of intake branch pipes 2.3 and exhaust branch pipes 2.6 is connected to one of the server racks 10. A cold air duct 3.1 is connected to a first connecting unit 5.3.1 and a second cold air duct 3.2 via a first three-way valve 4.1. The second cold air duct 3.2 is connected to a second connecting unit 5.3.2 and an air inlet main duct 2.1 via a second three-way valve 4.2. A heat exchange tube 5.3 is connected between the first and second connecting units 5.3.1 and 5.3.2. The water-cooled unit includes a water-cooled box 5 for housing the heat exchange tube. The air-cooled unit includes an air inlet duct 1.1, an air outlet duct 1.2, and a first heat exchanger 1.3 connected between the air inlet duct 1.1 and the air outlet duct 1.2. The air outlet main duct 2.4 and the first cold air duct 3.1 are both connected to the first heat exchanger 1.3. A third induced draft fan 1.4 is provided at the air inlet duct 1.1. The air inlet duct 1.1 also has a spray unit 1.5 and a filter unit 1.6.

[0030] Temperature sensors are present at both the main air intake pipe 2.1 and the main air outlet pipe 2.4; each cabinet 10 has more than two temperature sensors; each air intake branch pipe 2.3 and each air outlet branch pipe 2.6 has a temperature sensor; and the water-cooled box 5 and the air intake pipe 1.1 have temperature sensors.

[0031] The first connecting unit 5.3.1 and the second connecting unit 5.3.2 both include a connecting rigid pipe and a trapezoidal compartment connected to the connecting rigid pipe. The heat exchange pipe 5.3 is connected to the trapezoidal compartment. There are multiple heat exchange pipes 5.3, and the multiple heat exchange pipes 5.3 are arranged in parallel to each other.

[0032] There are multiple heat exchange tubes 5.3. Each heat exchange tube 5.3 includes multiple straight tubes and multiple bend joints. The number of straight tubes is one more than the number of bend joints. Two adjacent straight tubes are connected by a bend joint. The top straight tube extends out of the water-cooled box and is connected to the second connection unit 5.3.2. The bottom straight tube extends out of the water-cooled box 5 and is connected to the first connection unit 5.3.1. All bend joints are located inside the water-cooled box 5.

[0033] The water-cooling unit also includes a water storage tank 6.12 and a second heat exchanger 6.7. A refrigeration unit 6.13 and a temperature sensor are installed in the water storage tank 6.12. The water-cooling box 5 includes an inlet pipe 6.4, a first outlet pipe 6.1, and a second outlet pipe 6.2 located above the first outlet pipe 6.1. A first water pump 6.5 is located at the inlet pipe 6.4. The inlet pipe 6.4 is connected to the water storage tank 6.12. The water storage tank 6.12 is connected to a first connecting water pipe 6.11. Both the first outlet pipe 6.1 and the second outlet pipe 6.2 are connected to a third three-way valve 6.3. The third three-way valve 6.3 is also connected to a second connecting water pipe 6.6. Both the first connecting water pipe 6.11 and the second connecting water pipe 6.6 are connected to the second heat exchanger 6.7. The second heat exchanger 6.7 is also connected to an inlet pipe 6.8 and an outlet pipe 6.9. A second water pump 6.10 is located at the inlet pipe 6.8.

[0034] The water-cooled box 5 is rectangular in shape. The first water outlet pipe 6.1 and the second water outlet pipe 6.2 of the water-cooled box 5 are located on the same side of the water-cooled box 5. The water inlet pipe 6.4 is located at the bottom of the water-cooled box 5. The top of the water-cooled box 5 has a vent hole 5.11.

[0035] The water-cooled box 5 includes a front plate, a rear plate, a top plate, a bottom plate, a first side plate, and a second side plate. Multiple parallel first partitions 5.1 are fixed to the first side plate, and multiple parallel second partitions 5.2 are fixed to the second side plate. The multiple first partitions 5.1 and multiple second partitions 5.2 are alternately distributed. The end of the first partition 5.1 connected to the first side plate is lower than the end furthest from the first side plate, and the end of the second partition 5.2 connected to the second side plate is lower than the end furthest from the second side plate. The sum of the number of first partitions 5.1 and second partitions 5.2 is one less than the number of straight tubes in each heat exchange tube. There is one first partition 5.1 or one second partition 5.2 between two adjacent straight tubes.

[0036] Two of the multiple first partitions 5.1 have arc-shaped curved panels 5.4 connected to their ends away from the first side plate. These two first partitions 5.1 have a first cavity 5.1.1. The curved panel 5.4 has a second cavity 5.4.1 communicating with the first cavity 5.1.1. The curved panel 5.4 also has multiple connecting holes 5.4.2 connecting the internal space of the water-cooled box 5 and the second cavity 5.4.1. Two water pipes are also fixed to the outer wall of the rear plate, and each water pipe has a water pipe valve 5. 9. Two water pipes and two curved panels 5.4 correspond one-to-one, with each water pipe communicating with the second cavity 5.4.1 of the corresponding curved panel; two mounting brackets 5.6 are installed on the outer side wall of the front panel, with each mounting bracket 5.6 corresponding to one of the two curved panels, and a light source 5.8 and an image acquisition device 5.7 are installed at each mounting bracket 5.6; the front panel is made of transparent material; or the front panel has two observation windows, with each observation window corresponding to one of the two mounting brackets 5.6, and each mounting bracket 5.6 is installed at one of the observation windows.

[0037] Each curved panel 5.4 has multiple rows of connecting holes 5.4.2, with the connecting holes 5.4.2 in each row evenly spaced; the rear plate is also equipped with two ultrasonic vibration units 5.10, with each ultrasonic vibration unit 5.10 corresponding to one of the two curved panels 5.4. A pressurized air pump 5.5 is also installed at the first connecting unit 5.3.1.

[0038] As shown in the figure, the DC compartment of this application, including the circulation unit, receives cold air through the intake manifold, which, after passing through the server racks, exits cold air through the exhaust manifold, thus removing heat from the data center and achieving a cooling cycle. Specifically, this is further divided into air-cooled cooling and gas-liquid cooling.

[0039] When only natural cold air is used for cooling, the first and second three-way valves connect the first cold air duct, the second cold air duct, and the main air intake duct. The air coming out of the main air intake duct exchanges heat with the outside air in the first heat exchanger, thus achieving circulating cooling of the cabinet.

[0040] When water cooling is required, the air cooled by the first heat exchanger exits through the first cold air duct and is further cooled by the water-cooled chamber (where airflow is distributed to multiple heat exchange tubes, achieving a better cooling effect and further reducing the temperature), before flowing back to the main air inlet duct for circulating cooling. The water volume in the water-cooled chamber is adjustable. By switching the second three-way valve, water can be discharged from either the first or second outlet pipe, allowing the chamber to be filled with water or only about half full, thus controlling the length of the heat exchange tubes in the cooling water and consequently controlling the cooling level. The water in the water-cooled chamber also exchanges heat with natural cold water sources through the storage tank and the second heat exchanger, ensuring continuous circulation and heat exchange with natural water. Furthermore, when a larger cooling capacity is needed, the water-cooled chamber is filled with water, and the refrigeration unit can further cool the storage tank, achieving an even better cooling effect.

[0041] Because the cooling cycle in this application relies on the circulating heat exchange of multiple heat exchangers, and multiple circulation pipes are always submerged in water, and there are many bends in the pipes, special attention needs to be paid to the sealing of the heat exchange pipes; otherwise, it may lead to humidity imbalance in the data center. Therefore, when water is discharged through the first outlet pipe (at which point the water level is higher than the first outlet pipe by a certain height), the lower curved panel is used for testing; when water is discharged through the second outlet pipe, both the upper and lower curved panels are used for testing simultaneously. When the water-cooled box is not in use (at which point the first and second three-way valves are not connected to the water-cooled box), the water-cooled box is filled with water, and a pressurized air pump can be used to pressurize the heat exchange pipes to test the airtightness. In this case, both curved panels can be used for testing. The specific testing method is as follows: Before testing, because the water level is higher than the curved panel used for testing (since both the first and second baffles are tilted upwards at one end, air bubbles cannot be trapped in the corner between the baffles and the side wall of the water-cooled box during the upward movement of the water flow), a small number of air bubbles may be trapped at the curved panel and unable to move upwards. At this time, the water pipe valve is opened and the corresponding ultrasonic vibration unit is activated, so that the air bubbles trapped here flow away through the water pipe. After the air bubbles have flowed away, the water pipe valve and the ultrasonic vibration unit are closed, and then the test is carried out. If air bubbles are generated during the test (the generated air bubbles will be trapped at the curved panel), they will be captured by the image acquisition device, thereby triggering an alarm and enabling timely maintenance. If no air bubbles are generated, it means that the airtightness meets the requirements. During the pressure test, the water-cooled box does not participate in the cooling of the data center. When the water-cooled box participates in the cooling of the data center (at this time, the water level submerges the first or second water outlet pipe and the corresponding curved panel), this method can be used to monitor the heat exchange tubes in real time.

[0042] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A micro-modular DC cabin refrigerated using a natural cold source, characterized in that, The system includes a cooling unit and a data center unit. The data center unit includes multiple server racks, each housing servers. The cooling unit includes an air-cooling unit, a water-cooling unit, and a circulation unit. The circulation unit includes an intake manifold, an exhaust manifold, and a first cold air duct. Multiple intake branch pipes are connected in parallel to the intake manifold, and multiple exhaust branch pipes are connected in parallel to the exhaust manifold. A first exhaust fan is located at the intake manifold, and a second exhaust fan is located at the exhaust manifold. The number of intake branch pipes equals the number of exhaust branch pipes, and they correspond one-to-one. Each group of intake and exhaust branch pipes is connected to one of the server racks. The first cold air duct is connected to a first connecting unit via a first three-way valve. The first and second cold air ducts are connected, and the second cold air duct is connected to the second connecting unit and the main air inlet pipe through a second three-way valve. A heat exchange tube is connected between the first and second connecting units. The water-cooled unit includes a water-cooled box for housing the heat exchange tube. The air-cooled unit includes an air inlet pipe, an air outlet pipe, and a first heat exchanger connected between the air inlet pipe and the air outlet pipe. The main air outlet pipe and the first cold air duct are both connected to the first heat exchanger. A third induced draft fan is provided at the air inlet pipe, and a spray unit and a filter unit are also provided at the air inlet pipe. The water-cooled unit also includes a water storage tank and a second heat exchanger. A refrigeration unit and a temperature sensor are installed at the water storage tank. The water-cooled box includes an inlet pipe, a first outlet pipe, and a water inlet pipe. The water-cooled box includes a second water outlet pipe located above the first water outlet pipe, a first water pump at the water inlet pipe, a water storage tank connected to the water inlet pipe, a first connecting water pipe connected to the water storage tank, and both the first and second water outlet pipes connected to a third three-way valve. The third three-way valve is also connected to a second connecting water pipe. Both the first and second connecting water pipes are connected to a second heat exchanger. The second heat exchanger is also connected to an inlet pipe and an outlet pipe. A second water pump is located at the inlet pipe. The water-cooled box includes a front plate, a rear plate, a top plate, a bottom plate, a first side plate, and a second side plate. Two of the multiple first partitions have arc-shaped curved panels connected to their ends away from the first side plates. These two first partitions have a first cavity. The curved panel has a second cavity communicating with the first cavity, and the curved panel also has multiple connecting holes connecting the internal space of the water-cooled box and the second cavity; the outer wall of the rear panel is also fixed with two water pipes, each with a water pipe valve, the two water pipes and the two curved panels are one-to-one, and each water pipe is communicating with the second cavity of the corresponding curved panel; the outer wall of the front panel is equipped with two mounting brackets, the two mounting brackets and the two curved panels are one-to-one, and a light source and an image acquisition device are installed at the mounting brackets; the front panel is made of transparent material; or the front panel has two observation windows, the two observation windows and the two mounting brackets are one-to-one, and each mounting bracket is installed at one of the observation windows.

2. The micro-modular DC cabin utilizing natural cold sources for cooling according to claim 1, characterized in that, Temperature sensors are present at both the main air intake pipe and the main air exhaust pipe; each cabinet has more than two temperature sensors; each air intake branch pipe and each air exhaust branch pipe has a temperature sensor; and the water-cooled box and the air intake pipe have temperature sensors.

3. The micro-modular DC cabin utilizing natural cold sources for cooling according to claim 1, characterized in that, Both the first connection unit and the second connection unit include a connecting rigid pipe and a trapezoidal compartment connected to the connecting rigid pipe, and the heat exchange pipe is connected to the trapezoidal compartment; there are multiple heat exchange pipes, and the multiple heat exchange pipes are arranged in parallel to each other.

4. The micro-modular DC cabin utilizing natural cold sources for cooling according to claim 1, characterized in that, The heat exchange tubes are multiple, and each heat exchange tube includes multiple straight tubes and multiple bend joints. The number of straight tubes is one more than the number of bend joints. Two adjacent straight tubes are connected by a bend joint. The top straight tube extends out of the water-cooled box and is connected to the second connection unit, and the bottom straight tube extends out of the water-cooled box and is connected to the first connection unit. All bend joints are located inside the water-cooled box.

5. The micro-modular DC cabin using a natural cold source for cooling according to claim 1, characterized in that, The water-cooled box is rectangular in shape. The first and second water outlet pipes of the water-cooled box are located on the same side of the water-cooled box. The water inlet pipe is located at the bottom of the water-cooled box. The top of the water-cooled box has a vent.

6. The micro-modular DC cabin utilizing natural cold sources for cooling according to claim 5, characterized in that, Multiple parallel first partitions are fixed at the first side plate, and multiple parallel second partitions are fixed at the second side plate. The multiple first partitions and multiple second partitions are alternately distributed. The end of the first partition connected to the first side plate is lower than the end away from the first side plate, and the end of the second partition connected to the second side plate is lower than the end away from the second side plate. The sum of the number of first partitions and second partitions is one less than the number of straight tubes in each heat exchange tube. There is one first partition or one second partition between two adjacent straight tubes.

7. The micro-modular DC cabin utilizing natural cold sources for cooling according to claim 1, characterized in that, Each curved panel has multiple rows of connecting holes, with the connecting holes in each row being evenly spaced; the rear panel is also equipped with two ultrasonic vibration units, with each ultrasonic vibration unit corresponding to one of the two curved panels.

8. The micro-modular DC cabin utilizing natural cold sources for cooling according to claim 1, characterized in that, A pressurized air pump is also installed at the first connection unit.

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