A dual-layer integrated power and cooling module supporting heat dissipation in ultra-high power cabinets

Abstract

This application discloses a dual-layer integrated power and cooling module supporting heat dissipation for ultra-high power consumption cabinets. It includes an external fixing component comprising a prefabricated fixing part with a sealing plate on its side and a rainproof plate on its top wall. It also includes a circulating heat dissipation component disposed inside the prefabricated fixing part, comprising a heat-generating mechanism disposed in the lower space of the prefabricated fixing part and a wind-cooled heat dissipation mechanism disposed in the upper space of the prefabricated fixing part. Furthermore, it includes a differential pressure control system that controls the rotation speed of the wind-cooled heat dissipation mechanism based on the pressure difference between the lower and upper spaces of the prefabricated fixing part. Thus, the dual-layer structure design achieves physical isolation between hot and cold channels, forming an orderly airflow circulation, reducing airflow mixing and hot spot generation, improving cooling efficiency, and dynamically adjusting the fan speed in real time through differential pressure feedback, so that the cooling capacity dynamically matches the actual heat generation of the cabinet, avoiding overheating and overcooling, and improving heat dissipation efficiency and reliability.

Description

Technical Field

[0001] This application relates to the technical field of integrated power cooling cabinets, and more particularly to a dual-layer integrated power and cooling module that supports heat dissipation for ultra-high power cabinets. Background Technology

[0002] As data center computing density continues to increase, the power consumption per rack is also rising. Traditional room-level cooling methods suffer from low heat dissipation efficiency, high energy consumption, and inflexible deployment. Conventional air-cooling systems often employ fixed speeds or simple temperature control strategies, making it difficult to match dynamic heat loads in real time. This can easily lead to localized overheating or overcooling, resulting in energy waste. Furthermore, existing cooling infrastructure is typically tightly coupled with the data center building, making expansion and renovation difficult and hindering its ability to quickly adapt to changes in business operations.

[0003] Therefore, there is an urgent need for a cooling solution that can be flexibly deployed, efficiently dissipates heat, and is energy-efficient and adaptive. Summary of the Invention

[0004] This application aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this application is to propose a dual-layer integrated power and cooling module that supports heat dissipation of ultra-high power cabinets. The dual-layer structure design achieves physical isolation of hot and cold channels, forms an orderly airflow circulation, reduces airflow mixing and hot spot generation, improves cooling efficiency, and adjusts the fan speed in real time through differential pressure feedback so that the cooling capacity dynamically matches the actual heat generation of the cabinet, avoids overheating and overcooling, and improves heat dissipation efficiency and reliability.

[0006] To achieve the above objectives, this application proposes a dual-layer integrated power and cooling module that supports heat dissipation of ultra-high power cabinets, including an external fixing component. The external fixing component includes a prefabricated fixing member, a sealing plate on the side of the prefabricated fixing member, and a rainproof plate on the top wall of the prefabricated fixing member. It also includes a circulating heat dissipation assembly disposed inside the prefabricated fastener, the circulating heat dissipation assembly including a running heat-generating mechanism disposed in the lower space of the prefabricated fastener and a wind-cooling heat dissipation mechanism disposed in the upper space of the prefabricated fastener; It also includes a differential pressure control system that controls the rotational speed of the air-cooled heat dissipation mechanism based on the pressure difference between the lower and upper spaces of the prefabricated fixture.

[0007] This application discloses a dual-layer integrated power and cooling module that supports heat dissipation for ultra-high power cabinets. The dual-layer structure design achieves physical isolation between hot and cold channels, forming an orderly airflow circulation, reducing airflow mixing and hot spot generation, and improving cooling efficiency. The fan speed is adjusted in real time through differential pressure feedback, so that the cooling capacity dynamically matches the actual heat generation of the cabinet, avoiding overheating and overcooling, and improving heat dissipation efficiency and reliability.

[0008] In addition, the dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation proposed in the above application may also have the following additional technical features: Specifically, the operating heating mechanism includes a cabinet disposed in the lower space of the prefabricated fastener, with an inner baffle on one side of the cabinet, and a heat channel is provided between the inner wall of the prefabricated fastener and the inner baffle.

[0009] Specifically, the air-cooled heat dissipation mechanism includes a heat dissipation unit disposed in the upper space of the prefabricated fixing component, and the bottom wall of the heat dissipation unit is provided with a cold channel.

[0010] Specifically, the heat dissipation unit includes a fixing frame disposed within the prefabricated fixing component, and the inner side of the fixing frame is provided with a novel array of multiple sets of air-cooled heat dissipation components.

[0011] Specifically, the air-cooled heat sink includes a base plate installed in the fixed frame, a positioning frame is provided on one side of the base plate, a heat sink is rotatably provided on the base plate, and the end of the positioning frame opposite to the base plate is connected to the heat sink.

[0012] Specifically, the prefabricated fastener includes an assembly bracket, with prefabricated positioning and fixing units connected to both ends of the assembly bracket.

[0013] Specifically, the pre-positioning fixing unit includes an outer alloy frame, which has multiple sets of mounting slots, and the inner side of the mounting slots has screw holes.

[0014] Specifically, the differential pressure control system includes a differential pressure detection module, a control module, and an execution module; The differential pressure detection module includes a first pressure sensor and a second pressure sensor, and the first pressure sensor and the second pressure sensor are electrically connected to the differential pressure calculation unit respectively. The control module includes a comparison unit whose electrical input is connected to the differential pressure calculation unit, the comparison unit whose electrical output is connected to the controller, and the controller whose electrical output is connected to the execution module.

[0015] Specifically, the differential pressure control system operates as follows: S1. Monitor the pressure difference between at least one hot and cold aisles in the lower cabinet area of ​​the data center in real time, generate a control signal for the circulating heat dissipation component based on the monitored pressure difference between the hot and cold aisles, and dynamically adjust the rotation speed of the heat dissipation part in the circulating heat dissipation component according to the control signal. S2. The cold aisle and the hot aisle are respectively opened at the interval between the lower cabinet area and the circulating heat dissipation component. The first pressure sensor and the second pressure sensor are respectively installed at the cold aisle and the hot aisle. The pressure value of the cold aisle (labeled as the first pressure value) and the pressure value of the hot aisle (labeled as the second pressure value) are collected in real time by the pressure sensor. The difference between the first pressure value and the second pressure value is calculated by the pressure difference calculation unit to obtain the pressure difference between the cold and hot aisles. S3. The comparison unit compares the pressure difference between the hot and cold channels calculated by monitoring with the preset target pressure difference setting value to obtain the pressure difference deviation value. The pressure difference deviation value is input into the controller. After the controller's control algorithm (PID algorithm) is used to calculate, the control signal of the circulating heat dissipation component is output to control its rotation speed.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the heating mechanism structure in operation according to this application; Figure 3 This is a schematic diagram of the air-cooled heat dissipation mechanism of this application; Figure 4 This is a schematic diagram of the heat dissipation unit structure of this application; Figure 5 This is a schematic diagram of the air-cooled heat sink structure of this application; Figure 6 This is a schematic diagram of the prefabricated fastener structure in this application; Figure 7 This is a schematic diagram of the pre-positioned fixed unit structure of this application; Figure 8 This is a flowchart of the differential pressure control wind speed procedure in this application; Figure 9 This is a block diagram of the differential pressure control system of this application.

[0018] As shown in the figure: 10. External fixing component; 101. Sealing plate; 102. Prefabricated fixing component; 1021. Assembly bracket; 1022. Prefabricated positioning fixing unit; 10221. External alloy frame; 10222. Mounting slot; 10223. Screw hole; 103. Rain guard; 20. Circulating heat dissipation component; 201. Operating heat generation mechanism; 2011. Cabinet; 2012. Inner baffle; 2013. Hot aisle; 202. Air-cooled heat dissipation mechanism; 2021. Heat dissipation unit. Yuan; 20211, Fixing frame; 20212, Air-cooled heat sink; 202121, Base plate; 202122, Positioning frame; 202123, Heat dissipation unit; 2022, Cold aisle; 30, Differential pressure control system; 301, Differential pressure detection module; 3011, First pressure sensor; 3012, Second pressure sensor; 3013, Differential pressure calculation unit; 302, Control module; 3021, Controller; 3022, Comparison unit; 303, Execution module. Detailed Implementation

[0019] Embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. Rather, embodiments of this application include all variations, modifications, and equivalents falling within the appended spirit and connotation.

[0020] The following description, in conjunction with the accompanying drawings, describes a dual-layer integrated power and cooling module that supports heat dissipation in ultra-high power cabinets, according to an embodiment of this application.

[0021] like Figure 1-9 As shown in the figure, an embodiment of this application discloses a dual-layer integrated power and cooling module supporting heat dissipation for ultra-high power cabinets. The module includes an external fixing component 10, which includes a prefabricated fixing member 102. The prefabricated fixing member 102 has a sealing plate 101 on its side and a rainproof plate 103 on its top wall. It also includes a circulating heat dissipation component 20 disposed inside the prefabricated fixing member 102. The circulating heat dissipation component 20 includes a heat-generating mechanism 201 disposed in the lower space of the prefabricated fixing member 102 and a wind-cooling heat dissipation mechanism 202 disposed in the upper space of the prefabricated fixing member 102. Furthermore, it includes a differential pressure control system 30 that controls the rotational speed of the wind-cooling heat dissipation mechanism 202 based on the pressure difference between the lower and upper spaces of the prefabricated fixing member 102.

[0022] It should be noted that the prefabricated fixing component 102 in the external fixing component 10 described in this embodiment can be assembled according to the size of the computer room and the number of data center cabinets and circulating heat dissipation components 20 that need to be accommodated inside, satisfying the self-assembly design to adapt to different sized factory buildings. The operating heat-generating mechanism 201 in the circulating heat dissipation component 20 is mainly the operating host set in the lower area of ​​the prefabricated fixing component 102. The host generates heat during operation, while the air-cooled heat dissipation mechanism 202 set in the upper layer dissipates heat through air. The differential pressure control system 30 controls the rotation speed of the circulating heat dissipation component 20 based on the pressure difference between the upper and lower layers inside the equipment.

[0023] In one embodiment of this application, such as Figure 2 As shown, the operating heating mechanism 201 includes a cabinet 2011 set in the lower space of the prefabricated fastener 102. An inner baffle 2012 is provided on one side of the cabinet 2011, and a heat channel 2013 is left between the inner wall of the prefabricated fastener 102 and the inner baffle 2012.

[0024] It should be noted that the rack 2011 in the heat-generating mechanism 201 is the main rack of computing power in the data center. The main rack emits a lot of heat during operation, and the heat flows through the heat channel 2013 to the area of ​​the air-cooled heat dissipation mechanism 202 above.

[0025] In one embodiment of this application, such as Figure 3 As shown, the air-cooled heat dissipation mechanism 202 includes a heat dissipation unit 2021 disposed in the upper space of the prefabricated fixing component 102, and the bottom wall of the heat dissipation unit 2021 is provided with a cold channel 2022.

[0026] It should be noted that the heat dissipation unit 2021 in the air-cooled heat dissipation mechanism 202 is installed in the upper area of ​​the prefabricated fixing part 102, while the cold channel 2022 is set on the front and rear sides of the air-cooled heat dissipation mechanism 202 and is connected to the hot channel 2013 through the cold channel 2022.

[0027] In one embodiment of this application, such as Figure 4 As shown, the heat dissipation unit 2021 includes a fixing frame 20211 disposed in the prefabricated fixing member 102, and a new array of multiple sets of air-cooled heat dissipation components 20212 are provided on the inner side of the fixing frame 20211.

[0028] It should be noted that the mounting bracket 20211 in the heat dissipation unit 2021 is fixedly installed inside the assembly bracket 1021, and multiple sets of air-cooled heat dissipation components 20212 are installed inside the mounting bracket 20211. The air-cooled heat dissipation components 20212 cool down the heat during operation.

[0029] In one embodiment of this application, such as Figure 5As shown, the air-cooled heat sink 20212 includes a base plate 202121 installed in a fixed frame 20211. A positioning frame 202122 is provided on one side of the base plate 202121. A heat sink 202123 is rotatably provided on the base plate 202121, and the end of the positioning frame 202122 facing away from the base plate 202121 is connected to the heat sink 202123.

[0030] It should be noted that the base plate 202121 described in this embodiment is provided with air ducts, and the heat dissipation part 202123 is a heat dissipation fan. The heat dissipation part 202123 absorbs heat and cools down through the air ducts during operation.

[0031] In one embodiment of this application, such as Figure 6 and Figure 7 As shown, the prefabricated fastener 102 includes an assembly bracket 1021, with pre-positioned fixing units 1022 connected to both ends of the assembly bracket 1021. The pre-positioned fixing unit 1022 includes an outer alloy frame 10221, which has multiple sets of mounting grooves 10222 and screw holes 10223 inside the mounting grooves 10222.

[0032] It should be noted that the assembly bracket 1021 and the pre-positioning fixing unit 1022 described in this embodiment are assembled together. The mounting groove 10222 in the outer alloy frame 10221 is spliced ​​together with the assembly bracket 1021 and fixed. The assembly bracket 1021 is threadedly fixed with the screw hole 10223.

[0033] In one embodiment of this application, such as Figure 9 As shown, the differential pressure control system 30 includes a differential pressure detection module 301, a control module 302, and an execution module 303. The differential pressure detection module 301 includes a first pressure sensor 3011 and a second pressure sensor 3012, which are electrically connected to the differential pressure calculation unit 3013. The control module 302 includes a comparison unit 3022 electrically connected to the differential pressure calculation unit 3013. The comparison unit 3022 is electrically connected to the controller 3021, and the controller 3021 is electrically connected to the execution module 303.

[0034] It should be noted that, in this embodiment, the differential pressure monitoring module 30 collects the differential pressure in the cold aisle 2022 through the first pressure sensor 3011, while the second pressure sensor 3012 collects the differential pressure in the hot aisle 2013. Subsequently, the differential pressure calculation unit 3013 calculates the difference in pressure values ​​between the first pressure sensor 3011 and the second pressure sensor 3012, thus obtaining the differential pressure between the cold and hot aisles. The differential pressure control system 30 effectively dissipates heat from the data center.

[0035] The system operation steps are as follows: S1. Monitor the pressure difference of at least one hot and cold aisle in the lower cabinet area of ​​the data center in real time, generate a control signal for the circulating heat dissipation component 20 based on the monitored hot and cold aisle pressure difference, and dynamically adjust the rotation speed of the heat dissipation part 202123 in the circulating heat dissipation component 20 according to the control signal. S2. A cold aisle 2022 and a hot aisle 2013 are respectively opened at the interval between the lower cabinet area and the circulating heat dissipation component 20. A first pressure sensor 3011 and a second pressure sensor 3012 are respectively installed at the cold aisle 2022 and the hot aisle 2013. The pressure value of the cold aisle 2022 is collected in real time and marked as the first pressure value and the pressure value of the hot aisle 2013 is marked as the second pressure value. The pressure difference calculation unit 3013 calculates the difference between the first pressure value and the second pressure value to obtain the pressure difference between the cold and hot aisles. S3. The pressure difference between the hot and cold channels calculated by the comparison unit 3022 is compared with the preset target pressure difference setting value to obtain the pressure difference deviation value. The pressure difference deviation value is input to the controller 3021. After the controller 3021 performs the PID algorithm, it outputs the control signal of the circulating heat dissipation component 20 to control its speed.

[0036] Specifically, the steps for operating the double-layer heat dissipation cabinet are as follows: based on the size of the data center server room and the cabinet deployment plan, the prefabricated fixing component 102 (including the assembly bracket 1021 and the prefabricated positioning fixing unit 1022) is assembled with the sealing plate 101, the rain shield 103, etc., to form a complete sealed or semi-sealed outer enclosure (external fixing component 10).

[0037] A heat-generating mechanism 201 (i.e., data center rack 2011) is deployed in the lower space of the enclosure. An inner baffle 2012 is installed on one side of the rack, thereby forming a specific heat channel 2013 between the rack 2011 and the inner wall of the enclosure. A wind-cooling heat dissipation mechanism 202 is deployed in the upper space of the enclosure. Multiple wind-cooling heat dissipation components 20212, each containing an adjustable-speed fan (heat dissipation unit 202123), are arrayed inside the heat dissipation unit 2021. A cold channel 2022 is formed at the bottom of the heat dissipation unit corresponding to the lower rack area. The cold and hot channels are spatially isolated, forming a circulating airflow path.

[0038] The IT equipment in the lower cabinet 2011 generates a lot of heat, which raises the temperature of the air around the cabinet. The heated air rises naturally due to its reduced density and flows upward from the thermal aisle 2013 into the upper space.

[0039] The differential pressure detection module 301 operates continuously: the first pressure sensor 3011 installed in the cold aisle 2022 monitors the pressure on the cold air side (first pressure value); the second pressure sensor 3012 installed in the hot aisle 2013 monitors the pressure on the hot air side (second pressure value).

[0040] The differential pressure calculation unit 3013 receives the pressure signals from the two sensors in real time and calculates the difference between them to obtain the real-time differential pressure (ΔP) between the hot and cold channels.

[0041] The comparison unit 3022 compares the calculated actual pressure difference (ΔP actual) with the preset target pressure difference setting value (ΔP target) to obtain the pressure difference deviation value (e = ΔP actual - ΔP target).

[0042] The controller 3021 (using PID or other control algorithms) receives the differential pressure deviation value (e). The control algorithm performs calculations based on the magnitude, direction, and trend of the deviation: If the actual pressure difference is lower than the target value, it indicates that the heat dissipation airflow is insufficient or the heat generation is too large. The controller will calculate a control signal to increase the fan speed.

[0043] If the actual pressure difference is higher than the target value, it indicates that the heat dissipation airflow is too strong or there is abnormal resistance. The controller will calculate a control signal to reduce the fan speed.

[0044] The goal is to bring the differential pressure deviation close to zero, that is, to maintain the system operating at the optimal differential pressure designed for it.

[0045] The control signal generated by the controller is transmitted to the execution module 303, which drives the heat dissipation part 202123 (heat dissipation fan) in the air-cooled heat sink 20212 to change the speed.

[0046] The upper cooling fan operates according to the new speed, and the forced airflow it generates delivers cold air downward through the cold aisle 2022. After cooling the cabinet, it becomes hot air, which then rises back to the heat dissipation unit through the hot aisle 2013 to be cooled, completing one cycle.

[0047] The change in fan speed directly alters the rate and intensity of airflow circulation, thereby changing the pressure distribution within the hot channel 2013 and the cold channel 2022, causing the actual pressure difference (ΔP_actual) to approach the target pressure difference (ΔP_target).

[0048] The above steps (steps three through five) form a real-time, continuous closed-loop control. The system continuously monitors, compares, calculates, and adjusts to ensure that the cooling capacity of the heat dissipation system dynamically matches the real-time heat load of the cabinet.

[0049] Ultimately, the system reaches a dynamic equilibrium near the target pressure difference, where heat dissipation efficiency is optimal. This ensures that the heat generated by the ultra-high power consumption cabinet is removed promptly and effectively, while avoiding energy waste caused by fans running at full speed for extended periods. This achieves intelligent, adaptive, and highly efficient heat dissipation. In summary, the dual-layer integrated power and cooling module supporting heat dissipation of ultra-high power cabinets in this application embodiment achieves physical isolation of hot and cold channels through a dual-layer structure design, forming an orderly airflow circulation, reducing airflow mixing and hot spot generation, improving cooling capacity utilization efficiency, and adjusting the fan speed in real time through differential pressure feedback so that the cooling capacity dynamically matches the actual heat generation of the cabinet, avoiding overheating and overcooling, and improving heat dissipation efficiency and reliability.

[0050] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A dual-layer integrated power and cooling module supporting heat dissipation in ultra-high power cabinets, characterized in that, The device includes an external fixing component (10), which includes a prefabricated fixing member (102). The prefabricated fixing member (102) has a sealing plate (101) on its side and a rainproof plate (103) on its top wall. It also includes a circulating heat dissipation assembly (20) disposed inside the prefabricated fastener (102), the circulating heat dissipation assembly (20) including a running heat-generating mechanism (201) disposed in the lower space of the prefabricated fastener (102) and a wind-cooling heat dissipation mechanism (202) disposed in the upper space of the prefabricated fastener (102). It also includes a differential pressure control system (30) that controls the rotational speed of the air-cooled heat dissipation mechanism (202) based on the pressure difference between the lower and upper spaces of the prefabricated fixture (102).

2. The dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 1, characterized in that, The operating heating mechanism (201) includes a cabinet (2011) disposed in the lower space of the prefabricated fastener (102). An inner baffle (2012) is provided on one side of the cabinet (2011), and a heat channel (2013) is left between the inner wall of the prefabricated fastener (102) and the inner baffle (2012).

3. The dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 1, characterized in that, The air-cooled heat dissipation mechanism (202) includes a heat dissipation unit (2021) disposed in the upper space of the prefabricated fixing component (102), and the bottom wall of the heat dissipation unit (2021) is provided with a cold channel (2022).

4. A dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 3, characterized in that, The heat dissipation unit (2021) includes a fixing frame (20211) disposed in the prefabricated fixing member (102), and the fixing frame (20211) has a new array of multiple sets of air-cooled heat dissipation components (20212) on its inner side.

5. A dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 4, characterized in that, The air-cooled heat sink (20212) includes a base plate (202121) installed in the fixed frame (20211), a positioning frame (202122) is provided on one side of the base plate (202121), a heat sink (202123) is rotatably provided on the base plate (202121), and the end of the positioning frame (202122) opposite to the base plate (202121) is connected to the heat sink (202123).

6. A dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 1, characterized in that, The prefabricated fastener (102) includes an assembly bracket (1021), and the two ends of the assembly bracket (1021) are respectively connected to a prefabricated positioning and fixing unit (1022).

7. A dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 6, characterized in that, The pre-positioning fixing unit (1022) includes an outer alloy frame (10221), the outer alloy frame (10221) is provided with multiple sets of mounting grooves (10222), and the inner side of the mounting groove (10222) is provided with screw holes (10223).

8. A dual-layer integrated power and cooling module supporting ultra-high power cabinet heat dissipation according to claim 1, characterized in that, The differential pressure control system (30) includes a differential pressure detection module (301), a control module (302), and an execution module (303). The differential pressure detection module (301) includes a first pressure sensor (3011) and a second pressure sensor (3012), and the first pressure sensor (3011) and the second pressure sensor (3012) are electrically connected to the differential pressure calculation unit (3013). The control module (302) includes a comparison unit (3022) electrically connected to the differential pressure calculation unit (3013), the comparison unit (3022) electrically connected to the controller (3021), and the controller (3021) electrically connected to the execution module (303).

9. The differential pressure control system according to claim 8, wherein the system operation steps are as follows: S1. Real-time monitoring of the pressure difference between at least one hot and cold aisles in the lower cabinet area of ​​the data center, generating a control signal for the circulating heat dissipation component (20) based on the monitored pressure difference between the hot and cold aisles, and dynamically adjusting the rotation speed of the heat dissipation part (202123) in the circulating heat dissipation component (20) according to the control signal. S2. A cold aisle (2022) and a hot aisle (2013) are respectively opened at the interval between the lower cabinet area and the circulating heat dissipation component (20). A first pressure sensor (3011) and a second pressure sensor (3012) are respectively installed in the cold aisle (2022) and the hot aisle (2013). The pressure value of the cold aisle (2022) (labeled as the first pressure value) and the pressure value of the hot aisle (2013) (labeled as the second pressure value) are collected in real time by the pressure sensor. The difference between the first pressure value and the second pressure value is calculated by the pressure difference calculation unit (3013) to obtain the pressure difference between the cold and hot aisles. S3. The pressure difference between the hot and cold channels calculated by the comparison unit (3022) is compared with the preset target pressure difference setting value to obtain the pressure difference deviation value. The pressure difference deviation value is input into the controller (3021). After the controller (3021) performs the control algorithm (PID algorithm) calculation, the control signal of the circulating heat dissipation component (20) is output to control its rotation speed.

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