Server cabinet ventilation wall structure with heat dissipation and fire protection functions

Abstract

The utility model discloses a server cabinet ventilation wall structure with heat dissipation and fire protection functions, which comprises a plurality of server cabinets, a closed maintenance channel and a plurality of heat pipe back plate ventilation wall heat dissipation air conditioners, and further comprises a fire protection module externally arranged at the top of the closed maintenance channel, and the plurality of heat pipe back plate ventilation wall heat dissipation air conditioners are arranged on the air exhaust sides of the plurality of server cabinets in rows by means of the closed maintenance channels. Each heat pipe heat exchanger in each heat dissipation air conditioner and an outdoor cold source form a refrigeration cycle through an air pipe and a liquid pipe. And the detector and the nozzle of each fire-fighting module are arranged in the corresponding server cabinet and are used for realizing accurate fire monitoring and fire extinguishing. The cooling capacity of the heat dissipation air conditioners can be mutually backed up, or the cooling capacity of the heat exchangers of the heat dissipation air conditioners can be mutually backed up, accurate fire-fighting local area protection can be provided without occupying the space of the cabinet, the fire-fighting response is rapid, and the safety of the system is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the server room heat removal and fire safety technical field relates to the heat dissipation and fire protection of the server room in data center and high density computing environment, especially relates to a kind of server cabinet air wall structure with heat dissipation and fire protection function, realize efficient heat dissipation, accurate fire protection and modular maintenance by the combination of air wall type heat pipe heat dissipation technology and external fire module. BACKGROUND

[0002] With the rapid development of data center and server room technology, its power density is continuously improved, and the heat dissipation demand and fire safety requirement of equipment are also greatly increased. At present, the single-cabinet power density of large data centers has reached 15-30kW, and some high-performance computing centers even exceed 50kW. Such high power density not only brings huge heat dissipation pressure, but also significantly increases the fire risk.

[0003] In terms of heat dissipation technology, traditional data centers mainly use room-level air conditioning refrigeration. This method usually sets up precision air conditioners in the computer room and supplies cold air to the entire room space through the air supply system. Servers complete heat dissipation through front and rear convection. This heat dissipation method has the following problems: First, the cold and hot air flow is mixed seriously, the refrigeration efficiency is low, and the air conditioner end energy consumption is high; second, it is difficult to achieve precise temperature control for different areas and different power density servers, and local hot spots are prone to occur; third, the refrigeration system lacks effective cold backup mechanism, and once the air conditioner fails, the server may overheat and crash.

[0004] In terms of fire protection technology, existing data centers generally use room-level smoke temperature sensing linkage automatic fire extinguishing system. This system monitors the fire through smoke detectors and temperature sensors distributed in the computer room space. Once the alarm condition is triggered, the gas fire extinguishing device is started to extinguish the fire in the entire space. This scheme has the following shortcomings: First, due to the high installation position of the detector, it is difficult to sense the fire at the initial stage, resulting in delayed fire extinguishing start; second, it cannot accurately locate the fire source, and once the fire extinguishing system is started, it will affect the entire computer room area, causing unnecessary loss and business interruption; third, the traditional fire extinguishing system releases extinguishing agent in the entire room or a larger area after starting, which may cause noise damage or other physical damage to electronic equipment (such as hard disks and servers) in the computer room, and the release of extinguishing agent will damage the computer room environment and affect subsequent recovery work; fourth, existing precise fire protection technology realizes point-to-point fire monitoring and extinguishing by embedding fire modules in server cabinets or placing fire modules on the top of the cabinet. However, this design occupies the equipment installation space inside the cabinet or the cable arrangement space on the top, affecting the expandability of the server and the flexibility of wiring.

[0005] In summary, existing data center cooling systems generally suffer from low efficiency, high energy consumption, and poor temperature control accuracy. Fire suppression systems exhibit shortcomings such as slow response, inaccurate positioning, and a wide impact range. Furthermore, improved fire suppression modules often occupy rack space or hinder maintenance. Therefore, developing a technical solution that achieves both efficient cooling and precise fire suppression without compromising rack space or maintenance convenience is a pressing technical challenge in the data center construction field. Summary of the Invention

[0006] (a) Technical issues

[0007] To address at least one of the aforementioned shortcomings and deficiencies in existing technologies, this utility model aims to provide a server rack airwall structure that combines heat dissipation and fire protection functions. By employing a technical solution that combines airwall-type heat pipe cooling with distributed fire protection modules, and arranging rows of server racks on one side of a closed maintenance aisle, rows of heat pipe backplane airwall cooling units on the other side, and several fire protection modules distributed at the top, this design achieves an organic combination of efficient heat dissipation, precise fire protection, and convenient maintenance. Furthermore, the cooling capacity of each heat pipe backplane airwall cooling unit can be mutually backed up, as can the cooling capacity of each heat exchanger within each unit, significantly improving heat dissipation efficiency. The multiple fire protection modules located at the top of the closed maintenance aisle provide precise localized fire protection without occupying server rack space, ensuring rapid fire response and improving system safety. This design also facilitates server maintenance and is particularly suitable for applications with high requirements for heat dissipation and safety, such as supercomputing and ultra-high-density data centers.

[0008] (II) Technical Solution

[0009] The technical solution adopted by this utility model to solve its technical problem is:

[0010] A server rack airflow structure combining heat dissipation and fire protection functions, for efficient heat dissipation and precise fire protection of server racks, includes at least an enclosed maintenance passage, multiple server racks, and multiple heat pipe backplane airflow cooling air conditioners. Specifically:

[0011] On one side of the width direction of the enclosed maintenance passage, multiple server racks are arranged in rows and adjacent to each other, and on the other side, multiple heat pipe backplane air-wall cooling air conditioners are arranged in rows and adjacent to each other. The multiple server racks and multiple heat pipe backplane air-wall cooling air conditioners are arranged along the length direction of the passage, and multiple fire protection modules are distributed on the top of the enclosed maintenance passage along its length direction.

[0012] The plurality of heat-pipe backboard wind wall heat dissipation air conditioners are installed on one side of the enclosed maintenance channel by suspension or fixation, and are arranged opposite to the air exhaust surface of the plurality of server cabinets arranged on the other side of the enclosed maintenance channel, wherein each heat-pipe backboard wind wall heat dissipation air conditioner comprises at least one sheet metal shell and a plurality of heat-pipe heat exchangers arranged in the sheet metal shell, and each heat-pipe heat exchanger forms an independent refrigeration cycle loop with the outdoor cold source through air pipes and liquid pipes.

[0013] The plurality of fire-fighting modules correspond to the server cabinets one by one, wherein each fire-fighting module is provided with a fire extinguishing agent reservoir, a detector and a controlled nozzle, the fire extinguishing agent reservoir is fixedly arranged on the top of the enclosed maintenance channel, the detector and the controlled nozzle are arranged in the corresponding server cabinet, the detector is used to monitor fire information in real time, and the controlled nozzle is connected to the fire extinguishing agent reservoir through a pipeline and sprays fire extinguishing agent in a controlled manner when the detector detects a fire.

[0014] Preferably, the enclosed maintenance channel comprises a frame, end doors, a top plate and a skylight, the frame is used to support the overall structure of the enclosed maintenance channel and extends along the length direction of the enclosed maintenance channel, the end doors are installed at both ends of the length direction of the frame, the top plate and the skylight are installed on the top of the frame, and each heat-pipe backboard wind wall heat dissipation air conditioner is suspended or fixedly installed on one side of the frame. The frame, the end doors, the top plate and the skylight realize cold and hot air flow isolation to ensure stable air flow in the enclosed maintenance channel, and realize columnar hanging of the heat-pipe backboard heat dissipation air conditioner and opening of the door by not less than 90 degrees.

[0015] Further, the enclosed maintenance channel further comprises a lighting sensing switch and a lighting lamp, the lighting lamp is installed in the frame and arranged along the length direction of the channel, and the lighting sensing switch is arranged near the end door and inside the channel, and is used to automatically turn on the lighting lamp when a maintenance personnel enters the enclosed maintenance channel, thereby providing lighting conditions for maintenance operation. With this structure, the enclosed maintenance channel provides a convenient maintenance space and conditions for the server cabinet without opening the heat-pipe backboard heat dissipation unit and destroying the overall module air flow organization: the maintenance personnel enters the enclosed maintenance channel through the end door, the lighting sensing switch automatically turns on the lighting lamp after sensing that someone enters the channel, thereby providing a space and lighting conditions for the staff to maintain the server.

[0016] Further, the skylight can be a fixed skylight or a rotating skylight, and when the skylight is a rotating skylight, a skylight controller is selected, the rotating skylight is linked with the room-level building fire-fighting system through the skylight controller, and is automatically opened in a controlled manner when a fire signal is received.

[0017] Preferably, the closed maintenance channel adopts a hot channel closed mode, the front mesh door is arranged on the air inlet side of the server cabinet facing the computer room environment, and the rear mesh door or no door plate is arranged on the air outlet side of the server cabinet facing the closed maintenance channel. The structure is arranged so that the high-temperature exhaust air of each server cabinet is discharged into the closed maintenance channel, and then flows to the return air side of the heat pipe backboard air wall heat dissipation air conditioner, the refrigerant working medium evaporates into refrigerant gas after absorbing the heat of the server cabinet in the heat pipe heat exchanger, and then the heat is transferred to the outdoor cold source through the gas pipe, and then the refrigerant liquid is cooled, and then the refrigerant liquid returns to the heat pipe heat exchanger through the liquid pipe and is evaporated again to discharge the heat from the computer room.

[0018] Preferably, the heat pipe heat exchanger I, the heat pipe heat exchanger II and the fan are arranged in each heat pipe backboard air wall heat dissipation air conditioner, the heat pipe heat exchanger I and the outdoor cold source form a refrigeration cycle circuit I through the gas pipe I and the liquid pipe I, the heat pipe heat exchanger II and the outdoor cold source form a refrigeration cycle circuit II through the gas pipe II and the liquid pipe II, and the fan is installed on the downstream side of the air path of the heat pipe heat exchanger I and the heat pipe heat exchanger II.

[0019] Further, the cold backup mode of the air wall structure selects to start only a part of the plurality of heat pipe backboard heat dissipation air conditioners according to the module load and backup demand, and the other part is not started as a backup; or selects to start one of the heat pipe heat exchanger I and the heat pipe heat exchanger II of each heat pipe backboard heat dissipation air conditioner, and only runs the refrigeration cycle circuit I or only runs the refrigeration cycle circuit II.

[0020] Preferably, the control unit in communication connection with the detector and the controlled nozzle in each fire-fighting module is further provided, which is used for receiving the fire information sent by the detector and controlling the corresponding controlled nozzle to spray the fire extinguishing agent according to the fire information.

[0021] Preferably, the detector comprises a temperature detection unit, a smoke detection unit and / or an infrared flame detection unit, wherein the temperature detection unit is used for monitoring the temperature rise of the environment in the server cabinet in real time, the smoke detection unit is used for detecting the smoke signal generated by the early fire, and the infrared flame detection unit is used for accurately identifying the fire source position and the flame intensity, and each detection unit is in communication connection with the control unit through a data line.

[0022] Preferably, the fire extinguishing agent reservoir is filled with clean gas fire extinguishing agent, and the clean gas is selected from non-toxic, harmless and non-conductive gas fire extinguishing agent.

[0023] (Three) Technical effects

[0024] Compared with the prior art, the server cabinet air wall structure with heat dissipation and fire-fighting functions provided by the utility model has the following technical effects:

[0025] The closed maintenance channel design effectively isolates cold and hot air streams, forms a stable cold air circulation path, and provides effective space and conditions for the maintenance of the server cabinet, and each heat pipe backboard air wall heat dissipation air conditioner, which is aimed at the air wall type heat dissipation mode, can realize mutual backup of cold energy, or the heat exchangers of each heat pipe backboard air wall heat dissipation air conditioner can realize mutual backup of cold energy, the system is energy-saving, efficient and safe, and helps to ensure the normal operation of the servers in the cabinet.

[0026] The utility model discloses a distributed fire-fighting design, on the basis of traditional room-level building fire-fighting, each fire-fighting module is equipped with independent detector, fire extinguishing agent reservoir and spray head, and the working pressure is greatly reduced compared with traditional room-level building fire-fighting, and the hard disk and other equipment are not damaged during the spraying process, and the utility model discloses an automatic detection, automatic fire extinguishing and automatic signal transmission function.

[0027] The utility model discloses a modular design, and the system is convenient for online maintenance and replacement. The closed maintenance channel provides independent maintenance space, and the combination of the lighting sensing switch and the lamp provides convenient operation conditions for the maintenance personnel. The modular structure significantly reduces the maintenance time and cost, and improves the operation and maintenance efficiency of the data center. And the utility model has significant technical advantages in the aspects of heat dissipation efficiency, safety and maintenance convenience, and is especially suitable for supercomputing, intelligent computing and high-density data center environment. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structural schematic view of the server cabinet air wall structure with the heat dissipation and fire-fighting functions of the utility model.

[0029] Figure 2 It is the arrangement position schematic view of the detector and the spray head in the server cabinet in the utility model.

[0030] Figure 3 It is the structural schematic view of only running the heat pipe backboard air wall heat dissipation air conditioner of the utility model.

[0031] Figure 4 It is the structural schematic view of only running the refrigeration cycle I in the air wall heat dissipation air conditioner of the utility model.

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1-server cabinet, 1-1 front mesh door, 1-2 rear mesh door, 2-closed maintenance channel, 2-1 frame, 2-2 end door, 2-3 top plate, 2-4 skylight, 2-5 lighting fixture, 3-heat pipe backboard wind wall heat dissipation air conditioner, 3-1 sheet metal shell, 3-2 heat pipe heat exchanger I, 3-3 heat pipe heat exchanger II, 3-4 fan, 3-5 air conditioner controller, 3-6 fire extinguishing module, 3-6-1 detector, 3-6-2 controlled nozzle, 3-6-3 fire extinguishing agent reservoir, 4-1 gas pipe I, 4-2 gas pipe II, 5-1 liquid pipe I, 5-2 liquid pipe II. DETAILED DESCRIPTION

[0034] In order to better understand the present application, the content of the present application will be further illustrated below in conjunction with examples, so that the advantages and features of the present application can be more easily understood by those skilled in the art. It should be noted that the following description is only a preferred embodiment of the present application, but the content of the present application is not limited to the following examples.

[0035] As shown in the accompanying drawings, Figure 1 The server cabinet wind wall structure with heat dissipation and fire extinguishing functions of the present application comprises a plurality of server cabinets 1, a closed maintenance channel 2, and a plurality of heat pipe backboard wind wall heat dissipation air conditioners 3. The plurality of server cabinets 1 are arranged in a row and are arranged on one side of the closed maintenance channel 2. The plurality of heat pipe backboard wind wall heat dissipation air conditioners 3 arranged in a row are arranged on the other side of the closed maintenance channel 2. A plurality of fire extinguishing modules 3-6 are arranged along the length direction of the closed maintenance channel 2 on the top of the closed maintenance channel 2.

[0036] Specifically, the closed maintenance channel 2 comprises a frame 2-1, an end door 2-2, a top plate 2-3, and a skylight 2-4. The frame 2-1 is used to support the overall structure of the closed maintenance channel and is arranged along the length direction of the channel. One side of the frame 2-1 is opposite to the air outlet of the server cabinet 1 arranged in a row, and the other side of the frame 2-1 is used to hang a plurality of heat pipe backboard wind wall heat dissipation air conditioners 3. The end door 2-2 is installed at both ends of the frame 2-1 along the length direction. The top plate 2-3 and the skylight 2-4 are installed on the top of the frame 2-1. The closed maintenance channel 2 composed of the frame 2-1, the end door 2-2, the top plate 2-3, and the skylight 2-4 realizes cold and hot airflow isolation to ensure stable airflow in the channel, and realizes the hanging of the heat pipe backboard wind wall heat dissipation air conditioners 3 arranged in a row and the opening of the door by not less than 90 degrees.

[0037] Each heat pipe backboard air wall heat dissipation air conditioner 3 comprises a sheet metal shell 3-1 and heat pipe heat exchanger I 3-2, heat pipe heat exchanger II 3-3 and fan 3-4 arranged in the sheet metal shell 3-1, and further comprises an air conditioner controller 3-5 installed outside the sheet metal shell 3-1, wherein: the heat pipe heat exchanger I 3-2 forms a refrigeration cycle circuit I with an outdoor cold source through gas pipe I 4-1 and liquid pipe I 5-1, the heat pipe heat exchanger II 3-3 forms a refrigeration cycle circuit II with the outdoor cold source through gas pipe II 4-2 and liquid pipe II 5-2, and the fan 3-4 is installed at the downstream side of the air path of the heat pipe heat exchanger I 3-2 and the heat pipe heat exchanger II 3-3.

[0038] A plurality of fire-fighting modules 3-6 correspond to each server cabinet 1, wherein each fire-fighting module 3-6 is provided with a detector 3-6-1, a controlled nozzle 3-6-2 and a fire extinguishing agent reservoir 3-6-3, the fire extinguishing agent reservoir 3-6-3 is fixedly arranged at the top of the enclosed maintenance channel 2, the detector 3-6-1 and the controlled nozzle 3-6-2 are arranged in the corresponding server cabinet 1, the detector is used to monitor fire information in real time, and the controlled nozzle is connected to the fire extinguishing agent reservoir through a pipeline and sprays the fire extinguishing agent in a controlled manner when the detector detects a fire.

[0039] As a preferred, the enclosed maintenance channel 2 further comprises a lighting induction switch and a lighting lamp, the lighting lamp 2-5 is installed in the frame 2-1 along the length direction of the channel, and the lighting induction switch is arranged at the position of the end door 2-2 and inside the channel, without opening the heat pipe backboard air wall heat dissipation unit 3 and without destroying the air flow organization of the entire module, the enclosed maintenance channel 2 provides a convenient maintenance space and condition for a plurality of server cabinets 1: the maintenance personnel enters the enclosed maintenance channel 2 through the end door 2-2, and the lighting induction switch automatically turns on the lighting lamp 2-5 after sensing that someone enters the channel, thereby providing a space and lighting condition for the staff to maintain the server.

[0040] As a preferred, the skylight 2-4 can be a fixed skylight or a rotating skylight, when the skylight 2-4 is a rotating skylight, a skylight controller can be selected, the rotating skylight can be linked with a room-level building fire-fighting system through the skylight controller, and automatically opens in a controlled manner when receiving a fire signal.

[0041] As preferred, the closed maintenance channel 2 adopts a hot aisle containment mode, the front mesh door 1-1 is arranged on the air inlet side of the server cabinet 1 to the computer room environment, and the rear mesh door 1-2 or no door plate is arranged on the air outlet side of the closed maintenance channel 2. The high-temperature exhaust air of each server cabinet 1 flows to the return air side of the server cabinet air wall structure 3 with the functions of heat dissipation and fire extinguishing after being discharged into the closed maintenance channel 2. The refrigerant working medium evaporates into refrigerant gas after absorbing the heat dissipation of the server cabinet 1 in the heat pipe heat exchanger I 3-2 and / or the heat pipe heat exchanger II 3-3, and then transfers heat to the outdoor cold source through the gas pipe I 4-1 and / or the gas pipe II 4-2, and then cools to refrigerant liquid. The refrigerant liquid flows back to the heat pipe heat exchanger I 3-2 and / or the heat pipe heat exchanger II 3-3 through the liquid pipe I 5-1 and / or the liquid pipe II 5-2 and is evaporated again to discharge heat from the computer room.

[0042] As preferred, the number of the heat pipe backboard air wall heat dissipation air conditioners 3 corresponds to the number of the server cabinets 1, and the fire extinguishing module 3-6 of each heat pipe backboard air wall heat dissipation air conditioner 3 corresponds to an adjacent server cabinet 1. The heat pipe backboard air wall heat dissipation air conditioner 3 adopts a modular design, and the heat pipe heat exchanger I 3-2, the heat pipe heat exchanger II 3-3, the fan 3-4 and the fire extinguishing module 3-6 can realize online maintenance and replacement.

[0043] Figure 2 It is a schematic diagram of the arrangement position of the detector and the nozzle in the server cabinet in the utility model. As shown in Figure 1 、 2 The fire extinguishing module 3-6 is arranged on the top plate 2-3 of the closed maintenance channel 2, the fire extinguishing module 3-6 comprises a detector 3-6-1, a fire extinguishing agent storage 3-6-3 and a controlled nozzle 3-6-2, the detector 3-6-1 and the controlled nozzle 3-6-2 are arranged in the corresponding server cabinet 1, the detector 3-6-1 is used for monitoring fire information in real time, the controlled nozzle 3-6-2 is connected to the fire extinguishing agent storage through a pipeline and sprays the fire extinguishing agent in a controlled manner when the detector 3-6-1 detects a fire. The fire extinguishing module 3-6 is provided with a control unit in communication connection with the detector 3-6-1 and the controlled nozzle 3-6-2 through a data line, the control unit is used for receiving the fire information sent by the detector 3-6-1 and controlling the corresponding controlled nozzle 3-6-2 to spray the fire extinguishing agent according to a preset logic control, and the control unit in the fire extinguishing module 3-6 is in communication connection with the air conditioner controller 3-5, the computer room dynamic environment monitoring or the building fire extinguishing system; the communication information of the fire extinguishing module 3-6 can be displayed on the display screen of the air conditioner controller 3-5.

[0044] As preferred, the detector 3-6-1 comprises a temperature detecting unit, a smoke detecting unit and / or an infrared flame detecting unit, wherein the temperature detecting unit is used to monitor the temperature rise of the environment in the server cabinet 1 in real time, the smoke detecting unit is used to detect the smoke signal generated by the early fire, and the infrared flame detecting unit is used to accurately identify the fire source position and the flame intensity, and each detecting unit is connected to the control unit through data line communication. The fire extinguishing agent reservoir is filled with clean gas fire extinguishing agent, such as non-toxic, harmless and non-conductive gas fire extinguishing agent, such as heptafluoropropane, IG-541, IG-55 or IG-100, so as to ensure that the electronic equipment in the server cabinet 1 and the surrounding personnel will not be damaged in the fire extinguishing process.

[0045] Figure 3 The utility model discloses only run part heat pipe backboard wind wall heat dissipation air conditioner's structure schematic diagram. As shown in the drawing, according to load condition and backup demand, when only running part heat pipe backboard wind wall heat dissipation air conditioner 3, heat pipe backboard wind wall heat dissipation air conditioner 3 only starts a part, and the other part is used as backup and does not start. When the heat pipe backboard wind wall heat dissipation air conditioner 3 of running, the refrigerant flow direction in the refrigeration cycle circuit I formed by heat pipe heat exchanger I 3-2, gas pipe I 4-1, liquid pipe I 5-1 and outdoor cold source is as shown in arrow A, the refrigerant flow direction in the refrigeration cycle circuit II formed by heat pipe heat exchanger II 3-3, gas pipe II 4-2, liquid pipe II 5-2 and outdoor cold source is as shown in arrow B, and the air flow direction is as shown in arrow C.

[0046] Figure 4 The utility model discloses only run part heat pipe backboard wind wall heat dissipation air conditioner's structure schematic diagram. As shown in the drawing, according to load condition and backup demand, when only running part heat pipe backboard wind wall heat dissipation air conditioner 3, heat pipe backboard wind wall heat dissipation air conditioner 3 only starts a part, and the other part is used as backup and does not start. When the heat pipe backboard wind wall heat dissipation air conditioner 3 of running, the refrigerant flow direction in the refrigeration cycle circuit I formed by heat pipe heat exchanger I 3-2, gas pipe I 4-1, liquid pipe I 5-1 and outdoor cold source is as shown in arrow A, the refrigerant flow direction in the refrigeration cycle circuit II formed by heat pipe heat exchanger II 3-3, gas pipe II 4-2, liquid pipe II 5-2 and outdoor cold source is as shown in arrow B, and the air flow direction is as shown in arrow C.

[0047] Through the above embodiment, the purpose of the utility model is completely effectively realized. Equivalent or simple changes made according to the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The skilled in the art of the utility model can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the structure of the utility model or exceed the range defined in the claims, which should belong to the protection scope of the utility model.

Claims

1. A server rack ventilation structure with both heat dissipation and fire protection functions, comprising at least an enclosed maintenance passage, multiple server racks, and multiple heat pipe backplane ventilation air conditioners, characterized in that: On one side of the width direction of the enclosed maintenance passage, multiple server racks are arranged in rows and adjacent to each other, and on the other side, multiple heat pipe backplane air-wall cooling air conditioners are arranged in rows and adjacent to each other. The multiple server racks and multiple heat pipe backplane air-wall cooling air conditioners are arranged along the length direction of the passage, and multiple fire protection modules are distributed on the top of the enclosed maintenance passage along its length direction. The multiple heat pipe backplane air wall cooling air conditioners are respectively installed on one side of the closed maintenance passage by means of suspension or fixing, and are arranged opposite to the exhaust surface of the multiple server racks located on the other side of the closed maintenance passage. Each heat pipe backplane air wall cooling air conditioner includes at least a sheet metal shell and multiple heat pipe heat exchangers installed in the sheet metal shell. Each heat pipe heat exchanger forms an independent refrigeration cycle loop with the outdoor cold source through gas pipes and liquid pipes. The multiple fire protection modules correspond one-to-one with each server rack. Each fire protection module is equipped with a fire extinguishing agent reservoir, a detector, and a controlled nozzle. The fire extinguishing agent reservoir is fixedly installed at the top of the enclosed maintenance passage. The detector and the controlled nozzle are arranged in the corresponding server rack. The detector is used to monitor fire information in real time. The controlled nozzle is connected to the fire extinguishing agent reservoir through a pipeline and sprays fire extinguishing agent in a controlled manner when the detector detects a fire.

2. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 1, characterized in that, The enclosed maintenance passage includes a frame, end doors, a top plate, and a skylight. The frame supports the overall structure of the enclosed maintenance passage and extends along the length of the passage. The end doors are installed at both ends of the frame along its length. The top plate and skylight are installed on the top of the frame. Each heat pipe backplate air-cooling air conditioner is installed on one side of the frame by means of suspension or fixing.

3. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 2, characterized in that, The enclosed maintenance passage also includes a lighting sensor switch and lighting fixtures. The lighting fixtures are installed within the frame and arranged along the length of the passage. The lighting sensor switch is located near the end door and inside the passage, and is used to automatically turn on the lighting fixtures when maintenance personnel enter the enclosed maintenance passage to provide lighting conditions for maintenance operations.

4. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 2, characterized in that, The skylight can be a fixed skylight or a rotating skylight. When the skylight is a rotating skylight, a skylight controller is selected. The rotating skylight is linked to the room-level building fire protection system through the skylight controller and automatically opens in a controlled manner when a fire signal is received.

5. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 1, characterized in that, The enclosed maintenance passage adopts a hot aisle enclosure mode. The air intake side of each server rack facing the computer room environment uses a front mesh door, and the exhaust side facing the passage uses a rear mesh door or is not equipped with a door panel.

6. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 1, characterized in that, Each heat pipe backplate air conditioning unit is equipped with a heat pipe heat exchanger I, a heat pipe heat exchanger II, and a fan. The heat pipe heat exchanger I forms a refrigeration cycle loop I with the outdoor cold source through gas pipe I and liquid pipe I. The heat pipe heat exchanger II forms a refrigeration cycle loop II with the outdoor cold source through gas pipe II and liquid pipe II. The fan is installed downstream of the air path of the heat pipe heat exchanger I and the heat pipe heat exchanger II.

7. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 6, characterized in that, The cooling capacity backup method of the air wall structure is determined based on the module load and backup requirements. It involves selecting only a portion of the multiple heat pipe backplate air wall cooling air conditioners to be turned on, while the remaining portion is kept as a backup and not started; or, selecting to turn on either heat pipe heat exchanger I or heat pipe heat exchanger II of each heat pipe backplate air wall cooling air conditioner, operating only the refrigeration cycle loop I, or operating only the refrigeration cycle loop II.

8. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 1, characterized in that, Each of the fire-fighting modules is also equipped with a control unit that is communicatively connected to its detectors and controlled nozzles, for receiving fire information sent by the detectors and controlling the corresponding controlled nozzles to spray extinguishing agents according to the fire information.

9. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 8, characterized in that, The detector includes a temperature detection unit, a smoke detection unit, and / or an infrared flame detection unit. The temperature detection unit is used to monitor the temperature rise in the environment inside the server rack in real time. The smoke detection unit is used to detect smoke signals generated by early fires. The infrared flame detection unit is used to accurately identify the location and intensity of the fire source. Each detection unit is connected to the control unit via a data cable.

10. The server rack ventilation wall structure with both heat dissipation and fire protection functions as described in claim 1, characterized in that, The extinguishing agent storage container is filled with a clean gas extinguishing agent, which is selected as a non-toxic, harmless, and non-conductive gas extinguishing agent.

Images