Computer room smoke exhaust system and control methods

Abstract

This application discloses a computer room smoke extraction system applicable to the financial sector, comprising: a floor with multiple exhaust vents and multiple rows of server racks; an upper smoke extraction device and a lower smoke extraction device, both located outside the computer room and including; a smoke extraction fan and smoke extraction ducts, the fan of which faces the computer room and exhausts smoke particles through the ducts; and an isolation plate positioned between the smoke extraction fan and the computer room, with an isolation channel communicating with the computer room, the isolation channel being selectively opened or closed under the control of a controller. By incorporating the upper and lower smoke extraction devices, the extraction of smoke particles and fire extinguishing gases from the computer room can be accelerated, ensuring the computer room can quickly resume operation and minimizing losses. Furthermore, by adding an isolation channel on the isolation plate that opens when smoke extraction and fire extinguishing gas are needed and closes when not in use, the computer room remains in an independent and enclosed environment, preventing contact with the external environment and ensuring its safe and stable operation.

Description

Technical Field

[0001] This application relates to the field of data center smoke extraction technology, which can be used in the financial sector for smoke extraction from data center computer rooms after a fire. Specifically, it relates to a data center smoke extraction system and a control method for data center smoke extraction. Background Technology

[0002] Fire smoke contains various harmful gases (such as CO, HCl, HF, etc.). In data center server rooms within financial institutions, fires are typically extinguished using gaseous fire suppression systems (such as those containing heptafluoropropane). These gases do not affect the equipment in the server room, but they can be harmful to human health. After the fire is extinguished, traditional server rooms exhaust the gases produced by the fire suppression system and the smoke generated by the fire through exhaust ducts on the ceiling. This single-operation method results in low exhaust efficiency, hindering the rapid entry of maintenance personnel. Furthermore, smoke can accumulate on the floor and in corners, which is difficult to remove with exhaust ducts only located on the ceiling, further increasing waiting time for personnel. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art.

[0004] Therefore, one objective of this application is to provide a computer room smoke exhaust system that can quickly and effectively exhaust fire extinguishing gases and smoke after a fire in the computer room, ensuring the rapid resumption of operation of the computer room. At the same time, it is equipped with isolation panels to prevent the computer room environment from contacting the external environment, ensuring the safe and stable operation of the computer room.

[0005] Another objective of this application is to propose a method for controlling smoke exhaust in a computer room. When no fire occurs, the isolation panel isolates the external environment from the computer room environment, without affecting the normal operation of the computer room. In the event of a fire, the controller reacts quickly based on the monitoring results, exhausts the fire extinguishing gas and smoke in the computer room, and monitors it in real time. When the situation reaches normal, it notifies maintenance personnel that they can enter the site for handling, ensuring the safety of personnel.

[0006] To achieve the above objectives, the first aspect of this application provides a computer room smoke extraction system, wherein the computer room contains multiple rows of server racks, comprising: a floor with multiple exhaust holes and multiple rows of server racks placed on the floor; an upper smoke extraction device and a lower smoke extraction device, both of which are located outside the computer room and include: a smoke extraction fan and a smoke extraction duct, wherein the fan of the smoke extraction fan faces the computer room and the smoke extraction fan discharges smoke particles through the smoke extraction duct; and an isolation plate, wherein the isolation plate is disposed between the smoke extraction fan and the computer room to separate the smoke extraction fan from the computer room, wherein the isolation plate has an isolation channel communicating with the computer room, and the isolation channel can be selectively opened or closed under the control of a controller.

[0007] According to the computer room smoke exhaust system of this application, by setting up upper and lower smoke exhaust devices, the combined effect of both can accelerate the removal of smoke particles and extinguishing gases from the computer room, ensuring that the computer room can quickly resume operation and minimizing losses. Furthermore, both the upper and lower smoke exhaust devices are located outside the computer room, and by adding isolation channels on the partition plates, they can be opened when smoke exhaust and extinguishing gas are needed, and closed when not in use. The computer room is in an independent and enclosed environment, not in contact with the external environment, ensuring its safe and stable operation.

[0008] Furthermore, the upper smoke exhaust device is located above the computer room, and the fan of the upper smoke exhaust device is oriented towards the lower cabinet. The partition plate is located between the smoke exhaust fan of the upper smoke exhaust device and the computer room. The lower smoke exhaust device is located below the floor, and the fan of the lower smoke exhaust device is oriented towards the upper cabinet. The partition plate is located between the smoke exhaust fan of the lower smoke exhaust device and the floor.

[0009] Furthermore, the isolation plate is parallel to the floor and fixedly connected to the side wall of the computer room.

[0010] Furthermore, the isolation plate at the lower smoke exhaust device is a certain distance from the floor, and defines an elevated space with the side wall of the machine room.

[0011] Furthermore, the upper smoke exhaust device and the lower smoke exhaust device also include: a smoke collector, which is located outside the machine room, and the smoke exhaust fan is connected to the smoke collector through the smoke exhaust pipe.

[0012] Furthermore, an air inlet communicating with the computer room is provided on one side wall of the computer room, and an air outlet communicating with the computer room is provided on the other side wall of the computer room. The computer room smoke exhaust system also includes: ventilation equipment, which is connected to the air inlet through an air inlet pipe and to the air outlet through an air outlet pipe.

[0013] Furthermore, the air inlet and the air outlet are directly opposite each other.

[0014] Furthermore, it also includes: a gas monitoring sensor, a temperature monitoring sensor, and a fire detector, wherein the gas monitoring sensor, the temperature monitoring sensor, and the fire detector are all installed in the computer room and electrically connected to the controller.

[0015] Furthermore, it also includes: a warning light, which is installed outside the computer room and is electrically connected to the controller.

[0016] A second aspect of this application also provides a method for controlling smoke extraction in a computer room, including:

[0017] After the fire in the computer room was detected to be extinguished, the controller opened the isolation channel on the isolation panel and controlled the upper and lower smoke exhaust devices to work simultaneously.

[0018] After detecting that the concentrations of smoke particles and fire extinguishing gas in the computer room are within normal limits, the controller closes the isolation channels on the isolation panel; and

[0019] After the isolation passage is closed, the controller shuts down both the upper and lower smoke exhaust devices.

[0020] Furthermore, it also includes:

[0021] After the upper and lower smoke exhaust devices are closed, the controller activates the ventilation equipment.

[0022] Furthermore, it also includes:

[0023] During the period when the isolation channel is open, the controller turns on the warning light and keeps the warning light constantly on;

[0024] After the isolation passage is closed, the controller turns off the warning light.

[0025] 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

[0026] Other objects and advantages of this disclosure will become apparent from the following description of the disclosure with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the disclosure.

[0027] Figure 1 This is a schematic diagram of the layout of the computer room smoke exhaust system according to the embodiments of this application;

[0028] Figure 2 This is a top view of the computer room according to an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the computer room door according to an embodiment of this application.

[0030] It should be noted that, for clarity, the dimensions of structures or regions in the accompanying drawings used to describe embodiments of this disclosure may be enlarged or reduced; that is, these drawings are not drawn to actual scale.

[0031] Figure label:

[0032] Server room smoke extraction system: 100; server racks: 200.

[0033] Computer room 101, side walls 101A (101B), external environment 102, elevated space 103, air inlet 104, air outlet 105.

[0034] Floor 10

[0035] Smoke exhaust fan 21, smoke exhaust duct 22, smoke collector 23,

[0036] Isolation panel 30, isolation passage 301,

[0037] Ventilation equipment 41, air inlet duct 42, air outlet duct 43

[0038] Gas monitoring sensor 50,

[0039] Warning light 60,

[0040] The main entrance to the computer room is 70 meters high.

[0041] Cold air aisle 80. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0043] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0044] In this document, unless otherwise specified, directional terms such as "up," "down," "left," "right," "inner," and "outer" are used to indicate orientation or positional relationships based on the accompanying drawings, and are used only for the convenience of describing this disclosure, and are not intended to indicate or imply that the device, element, or component referred to must have a specific orientation, or be constructed or operated in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationships they represent may also change accordingly. Therefore, these directional terms should not be construed as limitations on this disclosure.

[0045] Fire smoke contains various harmful gases (such as CO, HCl, HF, etc.). In the event of a fire in a data center server room within a financial institution, gas extinguishing devices (such as those containing heptafluoropropane gas) are generally used to extinguish the fire. These gases will not affect the equipment in the server room. However, because heptafluoropropane gas will produce hydrogen fluoride in a high-temperature environment, it can be harmful to the human body. Therefore, it is necessary to promptly remove the smoke from the server room after the fire is extinguished.

[0046] Traditional server rooms exhaust gases from fire extinguishing systems and smoke generated during a fire through exhaust ducts located on the ceiling. Relying solely on these ceiling ducts results in low exhaust efficiency, requiring maintenance personnel to wait extended periods before entering the room, hindering rapid deployment. Furthermore, smoke particles and extinguishing agent residues float throughout the room, accumulating on the floor and in corners. The ceiling-mounted exhaust ducts of traditional server rooms cannot effectively remove these residues, further increasing waiting times.

[0047] The computer room smoke exhaust system provided in this application can quickly and effectively exhaust extinguishing gases and smoke after a fire in the computer room, ensuring the rapid resumption of operation. It is also equipped with an isolation panel to prevent contact between the computer room environment and the external environment, ensuring the safe and stable operation of the computer room. Based on this computer room smoke exhaust system, this application also proposes a control method for using the system. A controller controls the isolation channel of the isolation panel. When no fire occurs, the isolation channel is closed, and the isolation panel isolates the external environment from the computer room environment, not affecting the normal operation of the computer room. In the event of a fire, the controller reacts quickly based on monitoring results, opening the isolation channel to exhaust the extinguishing gases and smoke from the computer room, and monitoring in real time. When normal conditions are reached, maintenance personnel are notified to enter the site for handling, ensuring personnel safety.

[0048] It should be noted that this application is for the design of smoke exhaust after fire extinguishing in the computer room of a data center within a financial institution. The system and control method can also be used in other enclosed spaces, and this application does not limit them.

[0049] refer to Figures 1-3 A computer room smoke exhaust system 100 is provided, in which multiple rows of server racks 200 are placed, including: floor 10, upper smoke exhaust device and lower smoke exhaust device and partition plate 30.

[0050] Specifically, the floor 10 has multiple exhaust holes and multiple rows of server racks 200. The upper and lower smoke exhaust devices are both located outside the server room 101. Both the upper and lower smoke exhaust devices include a smoke exhaust fan 21 and a smoke exhaust duct 22. The fan of the smoke exhaust fan 21 faces the server room 101. The smoke exhaust fan 21 discharges smoke particles through the smoke exhaust duct 22. An isolation plate 30 is set between the smoke exhaust fan 21 and the server room 101 to separate the smoke exhaust fan 21 from the server room 101.

[0051] refer to Figure 1 , Figure 1 The image shows four rows of server racks 200 stored in server room 101, arranged in pairs. Cooling units cool the server racks 200 through exhaust vents on the floor 10. Preferably, the exhaust vents are located between two server racks 200, forming a cold air channel 80 between them.

[0052] To accelerate the removal of smoke and extinguishing particles, this application includes two smoke extraction systems: an upper smoke extraction system and a lower smoke extraction system. The upper smoke extraction system is located above the machine room 101, and the lower smoke extraction system is located below the floor 10. This allows for the rapid removal of smoke and extinguishing particles from both directions, facilitating faster access for maintenance personnel. More specifically, both the upper and lower smoke extraction systems include a smoke extraction fan 21 and a smoke extraction duct 22. The fan of the upper smoke extraction fan 21 faces downwards towards the lower cabinet 200, while the fan of the lower smoke extraction fan 21 faces upwards towards the upper cabinet 200. Smoke and extinguishing particles are discharged through the smoke extraction duct 22.

[0053] Because the exhaust duct 22 needs to connect to the outside environment 102 for exhaust, there will be exchanges of air, humidity, and temperature, which is detrimental to maintaining the environment of the computer room 101 and has a significant impact on the various devices in the computer room 101. In order to prevent the computer room 101 from being affected by the outside environment 102 during normal operation, this application installs isolation plates 30 on both the upper and lower exhaust devices to isolate the outside environment 102 from the computer room 101 environment. Specifically, the upper isolation plate 30 is set between the exhaust fan 21 of the upper exhaust device and the computer room 101, and the lower isolation plate 30 is set between the exhaust fan 21 of the lower exhaust device and the floor 10. Isolation channels 301 communicating with the computer room 101 environment are opened on both the upper and lower isolation plates 30. The isolation channels 301 can be selectively opened or closed under the control of the controller. When the isolation passage 301 is opened, the environment of the computer room 101 is connected to the external environment 102. Air from the computer room 101 is drawn in by the upper exhaust fan 21, and smoke particles and sprayed fire extinguishing particles are drawn into the exhaust duct 22 through the isolation passage 301 before being discharged into the external environment 102. Simultaneously, air from the computer room 101 is drawn in by the lower exhaust fan 21, and enters the isolation passage 301 through the exhaust vents on the floor 10, drawing smoke particles and sprayed fire extinguishing particles into the exhaust duct 22 before being discharged into the external environment 102. It is understood that, for the sake of reasonable space arrangement and to prevent the exhaust duct 22 from being too long, this application provides two complete exhaust systems without connecting the exhaust ducts 22 of the upper and lower exhaust systems. An excessively long exhaust duct 22 would not accelerate gas exhaust and would increase space utilization.

[0054] Understandably, to increase the exhaust volume, multiple exhaust fans 21 can be installed in the upper smoke exhaust system, and multiple exhaust fans 21 can be installed in the lower smoke exhaust system, as shown in the reference. Figure 1 Two exhaust fans 21 are installed at the top, each of which is connected to an exhaust duct 22. Two exhaust fans 21 are installed at the bottom, each of which is connected to an exhaust duct 22.

[0055] According to the computer room smoke exhaust system 100 of this application, by setting up an upper smoke exhaust device and a lower smoke exhaust device, the two work together to accelerate the discharge of smoke particles and fire extinguishing gases from the computer room 101, ensuring that the computer room 101 can quickly resume operation and reduce losses. In addition, both the upper and lower smoke exhaust devices are located outside the computer room 101. By adding an isolation channel 301 on the isolation plate 30, the device can be opened when smoke exhaust and fire extinguishing gases are needed, and closed when not in use. The computer room 101 is in an independent and closed environment and does not come into contact with the outside environment 102, which can ensure its safe and stable operation.

[0056] According to one embodiment of this application, the isolation plate 30 is parallel to the floor 10 and is fixedly connected to the two side walls 101A (101B) of the computer room 101.

[0057] like Figure 1 As shown, both the upper and lower isolation panels 30 are parallel to the floor 10. The two isolation panels 30 are connected to the walls on both sides of the computer room 101, isolating the upper and lower smoke exhaust devices outside the computer room 101 space.

[0058] It is understandable that this embodiment uses fewer partitions for the isolation plate 30, as it is more convenient to directly connect and fix it to the walls on both sides of the machine room 101. Of course, in other embodiments, the isolation plate 30 can also be arranged in other ways to isolate the upper and lower smoke exhaust devices from the space of the machine room 101. For example, the isolation plate can be U-shaped, with the upper isolation plate covering the smoke exhaust fan of the upper smoke exhaust device and the lower isolation plate covering the smoke exhaust fan of the lower smoke exhaust device. The isolation channel can be set on the bottom wall of the U-shaped isolation cover, that is, the isolation channel is set directly below or above the smoke exhaust fan. The isolation channel can also be set on the side wall of the U-shaped isolation cover, that is, the isolation channel is set on the side of the smoke exhaust fan. It can be understood in practice that the smoke exhaust effect of setting the isolation channel on the side is not as good as the smoke exhaust effect of setting it directly below or above the smoke exhaust fan.

[0059] According to one embodiment of this application, the isolation plate 30 at the lower smoke exhaust device is a certain distance from the floor 10, and defines an overhead space 103 with the two side walls 101A (101B) of the machine room 101.

[0060] The server racks 200 in server room 101 house various IT devices, which are typically routed underground. Therefore, this application creates an overhead space 103 between the lower partition 30 and the floor 10, through which cables can pass. Additionally, server room 101 requires cooling equipment, which, after cooling, can deliver cool air to the cold air duct 80 via the overhead space 103.

[0061] According to one embodiment of this application, the upper smoke exhaust device and the lower smoke exhaust device further include: a smoke collector 23, which is located outside the machine room 101, and the smoke exhaust fan 21 is connected to the smoke collector 23 through the smoke exhaust pipe 22.

[0062] It is understandable that smoke particles generated by a fire and extinguishing particles generated by firefighting are both solid pollutants, and direct discharge into the external environment 102 would affect the external environment 102. Therefore, this application sets up a smoke collector 23. Since the upper smoke exhaust device and the lower smoke exhaust device use different smoke exhaust pipes 22, a smoke collector 23 is set at the end of the two smoke exhaust pipes 22 to facilitate the centralized collection, treatment and transportation of all pollutants, and to prevent smoke from entering the external environment and causing secondary pollution.

[0063] To ensure the safety of maintenance personnel entering the computer room 101 environment after a fire has occurred and been extinguished, this application also includes ventilation equipment 41.

[0064] According to one embodiment of this application, an air inlet 104 communicating with the computer room 101 is provided on one side wall 101A, and an air outlet 105 communicating with the computer room 101 is provided on the other side wall 101B. The smoke exhaust system 100 of the computer room 101 also includes a ventilation device 41, which is connected to the air inlet 104 through an air inlet duct 42 and to the air outlet 105 through an air outlet duct 43.

[0065] like Figure 1 As shown, in Figure 1 An air outlet 105 is opened on the left wall, and an air outlet duct 43 is connected to the air outlet 105. Figure 1 An air inlet 104 is opened on the right wall of the room, and an air inlet duct 42 is connected to the air inlet 104. Through the circulation of the ventilation equipment 41, the air flow speed in the computer room 101 can be enhanced and the air in the computer room 101 can be replaced, ensuring the safety of maintenance personnel entering the computer room 101 after a fire.

[0066] According to one embodiment of this application, the air inlet 104 and the air outlet 105 are directly opposite each other. This is more conducive to airflow formation and accelerates the replacement of air in the computer room 101.

[0067] Preferably, the air inlet 104 and air outlet 105 are positioned at heights on the two side walls 101A (101B) that are almost identical to the average person's mid-face height. This ensures that maintenance personnel can breathe as much fresh air as possible after entering the computer room 101.

[0068] According to one embodiment of this application, the smoke exhaust system 100 of the computer room 101 further includes: a gas monitoring sensor 50, a temperature monitoring sensor, and a fire detector. The gas monitoring sensor 50, the temperature monitoring sensor, and the fire detector are all installed in the computer room 101 and electrically connected to the controller.

[0069] The gas monitoring sensor 50 is used to monitor the air in the computer room 101, such as the concentration of smoke particles and fire extinguishing particles. When the concentration exceeds a fixed value, the controller can control the isolation channel 301 to open and make the upper and lower smoke exhaust devices work. At the same time, the controller can also control the isolation channel 301 to close when the concentration reaches the normal value.

[0070] Temperature monitoring sensors are used to monitor the temperature inside computer room 101. For example, the temperature will continue to rise after a fire occurs and will decrease after the fire is extinguished. The temperature monitoring sensors can be used to detect the fire situation. In the event of a fire, the controller will lock the computer room door 70, preventing personnel from easily entering computer room 101 and preventing accidental entry. After the fire is extinguished, the controller will unlock the computer room door 70.

[0071] The fire detector is used to detect whether a fire has occurred in the computer room 101. When a fire occurs, the controller activates the fire extinguisher to spray fire extinguishing particles in all directions.

[0072] Gas monitoring sensor 50, temperature monitoring sensor, and fire detector are distributed in multiple locations throughout computer room 101. (Refer to...) Figure 2 .

[0073] According to one embodiment of this application, the computer room smoke exhaust system 100 further includes a warning light 60, which is located outside the computer room 101 and is electrically connected to the controller.

[0074] Warning light 60 serves as a reference for whether maintenance personnel can enter computer room 101. In the event of a fire or during the operation of the upper and lower smoke exhaust systems, warning light 60 will remain constantly lit, indicating that maintenance personnel are advised against entering computer room 101. Once smoke exhaust is complete and ventilation begins, warning light 60 will turn off, indicating that maintenance personnel can enter computer room 101 for inspection. Warning light 60 can be installed around the computer room door 70 outside computer room 101 to facilitate maintenance personnel's immediate confirmation of entry permission and timely inspection of the various IT devices within computer room 101.

[0075] Of course, one or two warning lights 60 can be installed. When only one warning light 60 is installed, it is used to alert maintenance personnel by turning on and off. When two warning lights 60 are installed, they can be distinguished by different colors. For example... Figure 3 This includes a red warning light 60 and a green warning light 60. When the gas fire suppression system is activated and the smoke has not been completely exhausted, the red warning light 60 will remain on, reminding maintenance personnel not to enter the computer room 101 at this time. When the computer room 101 returns to normal and the smoke has been completely exhausted, the green warning light will remain on, reminding maintenance personnel that they can enter the computer room 101 at this time.

[0076] Based on the aforementioned computer room smoke exhaust system 100, this application also provides a control method for using the system.

[0077] According to one embodiment of this application, a method for controlling smoke exhaust in a computer room includes the following steps:

[0078] After the fire in the computer room was detected to be extinguished, the controller opened the isolation passage on the isolation panel and controlled the upper and lower smoke exhaust devices to work simultaneously.

[0079] After detecting that the concentration of smoke particles and fire extinguishing gas in the computer room is within normal range, the controller closes the isolation channel on the isolation panel.

[0080] After the isolation passage is closed, the controller shuts down both the upper and lower smoke exhaust devices.

[0081] Based on the explanations of the gas monitoring sensors, temperature monitoring sensors, and fire detectors in the computer room smoke exhaust system, this operation can be achieved by the above three devices working together with the controller, which will not be elaborated further here.

[0082] It should be noted that the upper and lower smoke exhaust devices should be kept open before the isolation channel is closed, because this ensures that particles sucked into the smoke exhaust pipe will not fall back into the computer room environment.

[0083] According to one embodiment of this application, the control method further includes:

[0084] After the upper and lower smoke exhaust devices are closed, the controller activates the ventilation equipment.

[0085] Ventilation equipment maximizes the safety of maintenance personnel entering the computer room after a fire has occurred and been extinguished. After collecting pollutant smoke particles and extinguishing agents, the ventilation equipment is turned on for ventilation. For details, please refer to the explanation of ventilation equipment in the computer room smoke exhaust system; it will not be repeated here.

[0086] According to one embodiment of this application, the control method further includes:

[0087] While the isolation channel is open, the controller turns on the warning light and keeps it constantly lit; after the isolation channel is closed, the controller turns off the warning light.

[0088] This example demonstrates the use of a warning light. The presence or absence of the warning light indicates whether entry into the computer room is permitted.

[0089] The control method of this application can be implemented in the following principle:

[0090] When the fire detector detects a fire in the computer room equipment, the controller activates the fire suppression equipment, dispersing extinguishing particles and smoke throughout the room. Temperature sensors measure the temperature inside the computer room; when the temperature returns to normal, the fire is extinguished. The controller then activates the upper and lower smoke exhaust systems, and the smoke exhaust fan starts, expelling smoke from the computer room through the exhaust duct. During fire suppression and while the smoke exhaust fan is running, a red warning light at the computer room entrance remains illuminated, reminding personnel not to enter. Gas monitoring equipment then detects smoke concentrations (such as carbon monoxide, carbon dioxide, and extinguishing gases like heptafluoropropane and hydrogen fluoride). When the smoke concentration reaches normal levels, the smoke has been completely exhausted. At this point, the upper and lower smoke exhaust systems and the isolation passage are closed, and the ventilation equipment is activated, with air intake on one side and exhaust on the other. A green indicator light at the entrance remains illuminated, allowing maintenance personnel to enter for maintenance.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] While some embodiments based on the overall technical concept of this disclosure have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the overall technical concept of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A smoke extraction system for a computer room, wherein multiple rows of server racks are placed in the computer room, characterized in that, include: The floor has multiple ventilation holes and multiple rows of the server racks are placed on it. The system includes an upper smoke exhaust system and a lower smoke exhaust system, both located outside the computer room and comprising: a smoke exhaust fan and a smoke exhaust duct. The fan of the smoke exhaust fan faces the computer room, and the fan exhausts smoke particles and extinguishing gases through the smoke exhaust duct. The upper smoke exhaust system is located above the computer room, with the fan of its smoke exhaust fan facing downwards towards the server rack. The lower smoke exhaust system is located below the floor, with the fan of its smoke exhaust fan facing upwards towards the server rack. An isolation panel is installed between the smoke exhaust fan and the machine room to separate them. The isolation panel has an isolation channel communicating with the machine room. After a fire in the machine room is detected to be extinguished, the isolation channel opens under the control of a controller, and the upper and lower smoke exhaust devices operate simultaneously under the controller's control. Alternatively, after detecting that the concentration of smoke particles and extinguishing gas in the machine room is within normal limits, the isolation channel closes under the controller's control. The isolation panel is installed between the smoke exhaust fan of the upper smoke exhaust device and the machine room, and between the smoke exhaust fan of the lower smoke exhaust device and the floor. The upper smoke exhaust device is used to extract smoke particles and extinguishing gas from the machine room through the isolation channel, and the lower smoke exhaust device is used to extract smoke particles and extinguishing gas from the machine room through the exhaust vent and the isolation channel.

2. The computer room smoke exhaust system according to claim 1, characterized in that, The isolation panel is parallel to the floor and is fixedly connected to the side wall of the computer room.

3. The computer room smoke exhaust system according to claim 2, characterized in that, The isolation plate at the exhaust fan is a certain distance from the floor and defines an overhead space with the side wall of the machine room.

4. The computer room smoke exhaust system according to claim 1, characterized in that, The upper smoke exhaust device and the lower smoke exhaust device further include: A flue gas collector is installed outside the machine room, and the exhaust fan is connected to the flue gas collector through the exhaust duct.

5. The computer room smoke exhaust system according to claim 1, characterized in that, An air inlet communicating with the computer room is provided on one side wall, and an air outlet communicating with the computer room is provided on the other side wall. The computer room smoke exhaust system also includes: A ventilation device, wherein the ventilation device is connected to the air inlet through an air inlet duct and to the air outlet through an air outlet duct.

6. The computer room smoke exhaust system according to claim 5, characterized in that, The air inlet and the air outlet are directly opposite each other.

7. The computer room smoke exhaust system according to claim 1, characterized in that, It also includes: a gas monitoring sensor, a temperature monitoring sensor, and a fire detector, wherein the gas monitoring sensor, the temperature monitoring sensor, and the fire detector are all installed in the computer room and electrically connected to the controller.

8. The computer room smoke exhaust system according to claim 1, characterized in that, Also includes: Warning light, which is installed outside the computer room and is electrically connected to the controller.

9. A method for controlling smoke exhaust in a computer room, characterized in that, The method is implemented based on the computer room smoke exhaust system according to any one of claims 1 to 8, and includes: After the fire in the computer room was detected to be extinguished, the controller opened the isolation channel on the isolation panel and controlled the upper and lower smoke exhaust devices to work simultaneously. After detecting that the concentrations of smoke particles and fire extinguishing gas in the computer room are within normal limits, the controller closes the isolation channels on the isolation panel; and After the isolation passage is closed, the controller shuts down both the upper and lower smoke exhaust devices.

10. The control method according to claim 9, characterized in that, Also includes: After the upper and lower smoke exhaust devices are closed, the controller activates the ventilation equipment.

11. The control method according to claim 9, characterized in that, Also includes: During the period when the isolation channel is open, the controller turns on the warning light and keeps the warning light constantly on; After the isolation passage is closed, the controller turns off the warning light.

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