Emergency cooling device for machine room

Abstract

The invention provides an emergency cooling device for a machine room. The emergency cooling device for the machine room comprises a shell; the ice storage tank is provided with an ice outlet; the first heat exchanger is located below the ice storage tank and provided with an ice block containing cavity, an ice inlet and an air vent, the ice inlet communicates with the upper end of the ice block containing cavity, the air vent penetrates through the side wall of the first heat exchanger and communicates with the ice block containing cavity, and the ice inlet is located below the ice outlet; the second heat exchanger is provided with an ice water containing cavity, a water inlet and a water outlet, the water inlet and the water outlet are communicated with the ice water containing cavity, the lower end of the first heat exchanger is provided with a water flowing opening communicated with the ice block containing cavity, and the water flowing opening is communicated with the water inlet; the cooling fan is located on the side portion of the first heat exchanger and / or the second heat exchanger. Through the technical scheme provided by the invention, the problem that the emergency cooling effect of the machine room is poor due to the fact that the cooling capacity of a cooling method in the related technology is low and most cooling capacity is wasted can be solved.

Description

Technical Field

[0001] This invention relates to the field of communication device technology, and more specifically, to an emergency cooling device for computer rooms. Background Technology

[0002] If one or more air conditioners in a communication equipment room malfunction and cannot be repaired in a short time, it can cause localized high temperatures in the room, and in severe cases, it can even lead to overheating and shutdown of communication equipment.

[0003] Current emergency cooling measures, such as using ice in conjunction with fans, have significant limitations and efficiency issues. Specifically, their cooling capacity is limited: in traditional emergency cooling methods, heat exchange between ice and air is mainly achieved through the contact between the ice surface and the air. Due to the shape of the ice, the contact area between its surface and the air is relatively small, resulting in poor cooling effect. In particular, after the ice melts, the near-0°C ice water is often directly discharged without being fully utilized, resulting in a significant waste of cooling resources.

[0004] Therefore, the cooling methods in related technologies have low cooling capacity and waste most of the cooling capacity, resulting in poor emergency cooling effect for computer rooms. Summary of the Invention

[0005] This invention provides an emergency cooling device for computer rooms to solve the problem that the cooling methods in related technologies have low cooling capacity, waste most of the cooling capacity, and result in poor emergency cooling effect for computer rooms.

[0006] This invention provides an emergency cooling device for a computer room, comprising: a shell; an ice storage tank disposed at the upper end of the shell, the ice storage tank having an ice outlet; a first heat exchanger disposed inside the shell and below the ice storage tank, the first heat exchanger having an ice block receiving cavity, an ice inlet, and a vent, the ice inlet being connected to the upper end of the ice block receiving cavity, the vent penetrating the side wall of the first heat exchanger and being connected to the ice block receiving cavity, the ice inlet being located below the ice outlet; a second heat exchanger disposed inside the shell, the second heat exchanger having an ice water receiving cavity, a water inlet, and a water outlet, the water inlet and the water outlet being respectively connected to the ice water receiving cavity, the lower end of the first heat exchanger having a water outlet connected to the ice block receiving cavity, the water outlet being connected to the water inlet; and a cooling fan disposed on the shell and located on the side of the first heat exchanger and / or the second heat exchanger.

[0007] Furthermore, the emergency cooling device for the computer room also includes a water collection tank and a water pump. The water collection tank is located below the first heat exchanger, and the water outlet is connected to the upper opening of the water collection tank. The water pump is located inside the water collection tank, and the outlet of the water pump is connected to the inlet.

[0008] Furthermore, the emergency cooling device for the computer room also includes a controller and a water level detection device. The water level detection device is installed in the water collection tank, and the water level detection device and the water pump are respectively connected to the controller signal.

[0009] Furthermore, the emergency cooling device for the computer room also includes a vibrator and an ice quantity detection device. The vibrator is installed on the ice storage tank, and the ice quantity detection device is installed inside the ice storage tank. The vibrator and the ice quantity detection device are respectively connected to the controller signal.

[0010] Furthermore, the emergency cooling device for the computer room also includes a ground moisture sensor, a controller, and an alarm. The ground moisture sensor is retractably mounted on the housing. The ground moisture sensor includes a ground moisture detector. The ground moisture sensor has a detection position where the ground moisture detector contacts the ground and a storage position where it is stored in the housing. The ground moisture sensor and the alarm are respectively connected to the controller via signals.

[0011] Furthermore, the ground moisture sensing mechanism also includes a first swing arm and a second swing arm. The first end of the first swing arm is hinged to the outer casing via a first rotating shaft, and the first end of the second swing arm is hinged to the outer casing via a second rotating shaft. The second ends of the first swing arm and the second swing arm are respectively connected to the two ends of the ground moisture detector.

[0012] Furthermore, the ground moisture detector includes two metal strips, an insulating component, and two sensing wires. The insulating component is located between the two metal strips to separate them. The first ends of the two sensing wires are respectively connected to the two metal strips. The first swing arm, the second swing arm, the first rotating shaft, and the second rotating shaft are all hollow structures. The second end of one sensing wire passes through the hollow structure through the first swing arm and the first rotating shaft and is connected to the controller signal. The second end of the other sensing wire passes through the hollow structure through the second swing arm and the second rotating shaft and is connected to the controller signal.

[0013] Furthermore, the ground moisture sensing mechanism also includes a first spring and a second spring. One end of the first spring is connected to the middle of the first swing arm, and the other end of the first spring is connected to the outer casing. One end of the second spring is connected to the second swing arm, and the other end of the second spring is connected to the outer casing.

[0014] Furthermore, the emergency cooling device for the computer room also includes a return air temperature sensor, an outlet air temperature sensor, and a controller. The return air temperature sensor, the outlet air temperature sensor, and the cooling fan are all connected to the controller via signals. A wind speed sensor is installed at the outlet of the cooling fan, and the wind speed sensor is connected to the controller via signals.

[0015] Furthermore, the emergency cooling device for the computer room also includes a voice module, which is connected to the controller via signal; the emergency cooling device for the computer room also includes a touch screen, which is connected to the controller via signal; casters are provided at the bottom of the casing; and an electrical compartment is provided inside the casing, located at the top of the casing.

[0016] By applying the technical solution of this invention, through its unique two-stage heat exchange structure and design, the problems of low cooling capacity and waste of cooling capacity in traditional emergency cooling methods are effectively solved, specifically in the following aspects:

[0017] 1. Two-stage heat exchange mechanism: The device not only utilizes crushed ice in the first heat exchanger for initial cooling, but also incorporates a second heat exchanger to fully leverage the low-temperature characteristics of the ice water. After the crushed ice melts into ice water, the ice water flows from the outlet of the first heat exchanger into the ice water receiving chamber of the second heat exchanger, where it further absorbs heat until its temperature rises and it is discharged from the outlet. This design not only increases cooling capacity but also ensures the full utilization of cooling resources, avoiding the neglect and waste of ice water cooling capacity found in traditional methods.

[0018] 2. Optimized Cooling Process: The cooling fan is located on the side of the first and / or second heat exchanger. The fan's operation accelerates airflow through both heat exchangers, improving cooling efficiency. Simultaneously, the fan's placement effectively promotes heat exchange between the air and the ice / ice water. Compared to traditional fans that directly blow air onto a single ice block, this solution utilizes the cooling potential of ice and ice water more efficiently and comprehensively.

[0019] In summary, the technical solution of this application significantly improves cooling efficiency and cooling resource utilization by setting up a two-stage heat exchanger and optimizing the cooling process, effectively solving the problems of low cooling capacity and waste of cooling capacity in traditional emergency cooling methods, thus providing a more reliable and effective emergency cooling effect for computer rooms. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 The front view of the emergency cooling device for computer rooms provided in an embodiment of the present invention is shown;

[0022] Figure 2 A side view of the emergency cooling device for computer rooms provided in an embodiment of the present invention is shown;

[0023] Figure 3 This invention provides a schematic diagram of the ground moisture sensing mechanism of an emergency cooling device for computer rooms according to an embodiment of the present invention.

[0024] Figure 4 This invention illustrates a schematic diagram of the ground moisture detection element of the emergency cooling device for computer rooms provided in an embodiment of the present invention.

[0025] Figure 5This diagram shows the structure of the ground moisture sensing mechanism of the emergency cooling device for computer rooms provided in this embodiment of the invention when it is in the storage position;

[0026] Figure 6 This diagram shows the structure of the ground moisture sensing mechanism of the emergency cooling device for computer rooms provided in this embodiment of the invention when it is in the detection position;

[0027] Figure 7 An electrical system diagram of the emergency cooling device for computer rooms provided in an embodiment of the present invention is shown;

[0028] Figure 8 The power system diagram of the emergency cooling device for computer rooms provided in an embodiment of the present invention is shown;

[0029] Figure 9 This invention illustrates a schematic diagram of the structure of the second heat exchanger in the emergency cooling device for computer rooms provided in an embodiment of the present invention.

[0030] Figure 10 A flowchart of the control system of the computer room emergency cooling device provided in an embodiment of the present invention is shown.

[0031] The above figures include the following reference numerals:

[0032] 1. First heat exchanger;

[0033] 2. Second heat exchanger; 21. Inlet; 22. Outlet; 23. Metal coil; 24. Metal fins;

[0034] 3. Ice storage tank; 31. Vibrator; 32. Infrared transmitter; 33. Infrared receiver;

[0035] 4. Water collection tank; 41. Water level switch; 42. Water pump;

[0036] 5. Cooling fan;

[0037] 6. Appliance compartment;

[0038] 7. Ground moisture sensing mechanism; 71. Ground moisture detection element; 711. Metal strip; 712. Insulating component; 721. First swing arm; 722. Second swing arm; 731. First swing arm spring connecting post; 732. Second swing arm spring connecting post; 741. First rotating shaft; 742. Second rotating shaft; 75. Sensing wire; 762. Second spring; 772. Second outer shell spring connecting post;

[0039] 8. Pulleys;

[0040] 9. Outer shell;

[0041] 100. Controller;

[0042] 101. Touch screen; 102. DC motor driver; 103. Wind speed sensor; 104. Voice module; 105. Outlet air temperature sensor; 106. Return air temperature sensor; 107. Ground moisture transmitter; 108. First power module; 109. Second power module; 110. DC power terminal. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] like Figures 1 to 9 As shown, this embodiment of the invention provides an emergency cooling device for a computer room. The device includes a housing 9, an ice storage tank 3, a first heat exchanger 1, a second heat exchanger 2, and a cooling fan 5. The ice storage tank 3 is located at the upper end of the housing 9 and has an ice outlet. The first heat exchanger 1 is located inside the housing 9 and below the ice storage tank 3. The first heat exchanger 1 has an ice block receiving cavity, an ice inlet, and a vent. The ice inlet is connected to the upper end of the ice block receiving cavity, and the vent penetrates the side wall of the first heat exchanger 1 and is connected to the ice block receiving cavity. The ice inlet is located below the ice outlet. The second heat exchanger 2 is located inside the housing 9 and has an ice water receiving cavity, a water inlet 21, and a water outlet 22. The water inlet 21 and the water outlet 22 are respectively connected to the ice water receiving cavity. The lower end of the first heat exchanger 1 has a water outlet connected to the ice block receiving cavity, and the water outlet is connected to the water inlet 21. The cooling fan 5 (fan) is mounted on the housing 9 and located on the side of the first heat exchanger 1 and / or the second heat exchanger 2.

[0045] The emergency cooling device for computer rooms provided in this embodiment effectively solves the problems of low cooling capacity and waste of cooling capacity in traditional emergency cooling methods through its unique two-stage heat exchange structure and design, specifically in the following aspects:

[0046] 1. Two-stage heat exchange mechanism: The device not only utilizes crushed ice in the first heat exchanger 1 for initial cooling, but also incorporates a second heat exchanger 2 to fully leverage the low-temperature characteristics of the ice water. After the crushed ice melts into ice water, the ice water flows from the outlet of the first heat exchanger 1 into the ice water receiving chamber of the second heat exchanger 2, where it further absorbs heat until its temperature rises and it is discharged from the outlet. This design not only increases cooling capacity but also ensures the full utilization of cooling resources, avoiding the neglect and waste of ice water cooling capacity in traditional methods.

[0047] 2. Optimized Cooling Process: The cooling fan 5 is located on the side of the first heat exchanger 1 and / or the second heat exchanger 2. The operation of the cooling fan 5 accelerates the airflow through the two-stage heat exchangers, improving cooling efficiency. Simultaneously, the fan's position design effectively promotes heat exchange between the air and the ice and ice water. Compared to the traditional cooling method of a fan directly blowing air onto a single ice block, this solution utilizes the cooling potential of ice and ice water more efficiently and comprehensively.

[0048] In summary, the emergency cooling device for computer rooms provided in this embodiment significantly improves cooling efficiency and the utilization rate of cooling resources by setting up a two-stage heat exchanger and optimizing the cooling process. It effectively solves the problems of low cooling capacity and waste of cooling energy in traditional emergency cooling methods, thus providing a more reliable and effective emergency cooling effect for computer rooms.

[0049] It should be noted that existing cooling methods only utilize the cooling energy during ice melting, and the ice water, which is close to 0°C after melting, is directly discharged outdoors. The specific heat capacity of ice water is approximately 4.18 KJ / (Kg*°C). If the ice water temperature rises from 0°C to 24°C, each kilogram of ice water can absorb 100.32 KJ of heat. However, existing methods waste this portion of cooling energy. This application not only utilizes crushed ice in the first heat exchanger 1 for initial cooling but also incorporates a second heat exchanger 2, fully utilizing the low-temperature characteristics of the ice water. This not only increases cooling capacity but also ensures the full utilization of cooling resources, avoiding the neglect and waste of ice water's cooling energy in traditional methods.

[0050] In this embodiment, the cooling fan 5 is located on the side of the second heat exchanger 2 furthest from the first heat exchanger 1. Because the temperature of the ice water flowing through the coils inside the second heat exchanger 2 is higher than that of the first heat exchanger 1 when the system is working, the cooling fan 5 is installed in front of the second heat exchanger 2, which in turn is installed in front of the first heat exchanger 1. The cooling fan 5 pushes the air to flow through the fins of the second heat exchanger 2 first, reducing the air temperature, and then flows through the side walls of the multiple ice-containing chambers of the first heat exchanger 1, further cooling the air.

[0051] In this embodiment, the sidewall of the first heat exchanger is a first mesh plate, and the mesh openings of the first mesh plate form vents. The bottom wall of the first heat exchanger is a second mesh plate, and the mesh openings of the second mesh plate form drain outlets. Using the above structure, compared with traditional single-ice-block cooling, this design increases the contact area between the ice and air, thereby improving heat exchange efficiency.

[0052] Furthermore, a hydrophilic fabric lining is installed on the inner wall of the ice container cavity. The mesh wall of the ice container cavity and the hydrophilic fabric lining ensure that after the ice melts, the ice water can flow smoothly into the next stage heat exchanger instead of being discharged directly, thus avoiding direct waste of cooling capacity.

[0053] like Figure 1 As shown, the emergency cooling device for the computer room also includes a water collection tank 4 and a water pump 42. The water collection tank 4 is located below the first heat exchanger 1, and the water outlet is connected to the upper opening of the water collection tank 4. The water pump 42 is located inside the water collection tank 4, and the outlet of the water pump 42 is connected to the water inlet 21. This design allows the water after the ice melts to be collected and reused, improving cooling efficiency and resource utilization.

[0054] Specifically, the first heat exchanger 1 includes multiple vertically installed cuboid structures, in which crushed ice is located. The four walls of the cuboid structures are mesh-like to facilitate heat exchange between the ice and the flowing air. The inner wall of the first heat exchanger 1 is lined with a hydrophilic fabric material to ensure that the melted cold water will only flow downwards into the water collection tank 4 under the influence of gravity and will not be blown off the fabric surface by the flowing air.

[0055] Specifically, the second heat exchanger 2 is a structure of metal coil 23 with metal fins 24, which is beneficial for heat exchange.

[0056] The emergency cooling device for the computer room also includes a controller 100 and a water level detection device. The water level detection device is installed in the water collection tank 4, and the water level detection device and the water pump 42 are respectively connected to the controller 100 via signal. The controller 100 can automatically control the start and stop of the water pump 42 according to the water level changes in the water collection tank 4, ensuring the circulation of cooling water and avoiding water waste.

[0057] In this embodiment, the water level detection device includes a water level switch 41, which has the advantage of simple structure.

[0058] The outlet 22 of the second heat exchanger is connected to a flexible hose, which passes through the air conditioner drain hole in the computer room and leads to the outside of the computer room.

[0059] like Figure 1As shown, the emergency cooling device for the computer room also includes a vibrator 31 and an ice quantity detector. The vibrator 31 is installed on the ice storage tank 3, and the ice quantity detector is installed inside the ice storage tank 3. The vibrator 31 and the ice quantity detector are respectively connected to the controller 100 via signals. The vibrator 31 helps the crushed ice to smoothly enter the first heat exchanger 1, while the ice quantity detector can detect the amount of ice in the ice storage tank 3 in a timely manner, ensuring the continuity and effectiveness of the cooling process.

[0060] The ice quantity detection device includes an infrared transmitter 32 and an infrared receiver 33, which are respectively located on two opposite side walls of the ice storage tank 3 and are correspondingly arranged. Furthermore, the emission intensity of the infrared transmitter 32 and the receiving sensitivity of the infrared receiver 33 can be adjusted by the controller 100.

[0061] like Figures 1 to 6 As shown, the emergency cooling device for the computer room also includes a floor moisture sensor 7, a controller 100, and an alarm. The floor moisture sensor 7 is retractably mounted on the housing 9. The floor moisture sensor 7 includes a floor moisture detector 71 (floor moisture probe). The floor moisture sensor 7 has a detection position where the floor moisture detector 71 contacts the ground and a storage position where it can be stored in the housing 9. The floor moisture sensor 7 and the alarm are respectively connected to the controller 100 via signal transmission. This design can monitor the humidity of the computer room floor in real time. Once a leak is detected, the controller 100 will immediately activate the alarm to alert maintenance personnel to take measures to prevent equipment damage caused by the leak.

[0062] It should be noted that the crushed ice in the relevant technology comes from a nearby ice factory. Using ice blocks for emergency cooling of the computer room is a common method in the telecommunications industry. This emergency measure primarily aims to buy time to repair air conditioning malfunctions in the computer room, therefore the emergency time is short, and there is no need to consider the minor changes in humidity caused by the melting ice. In contrast, this application, by setting up a floor humidity sensor 7, a controller 100, and an alarm, can monitor the humidity of the computer room floor in real time, preventing equipment damage caused by water leakage.

[0063] Specifically, the ground moisture sensing mechanism 7 also includes a first swing arm 721 and a second swing arm 722. The first end of the first swing arm 721 is hinged to the outer casing 9 via a first pivot 741, and the first end of the second swing arm 722 is hinged to the outer casing 9 via a second pivot 742. The second ends of the first swing arm 721 and the second swing arm 722 are respectively connected to the two ends of the ground moisture detector 71. This structure allows the ground moisture detector 71 to switch between use and storage, which facilitates transportation and handling while ensuring accurate contact with the ground during use, thus improving detection accuracy.

[0064] like Figure 4As shown, the ground moisture detector 71 includes two metal strips 711, an insulator 712, and two sensing wires 75. The insulator 712 is located between the two metal strips 711 to separate them. The first ends of the two sensing wires 75 are connected to the two metal strips 711 respectively. The first swing arm 721, the second swing arm 722, the first rotating shaft 741, and the second rotating shaft 742 are all hollow structures. The second end of one sensing wire 75 passes through the hollow structure through the first swing arm 721 and the first rotating shaft 741 and is connected to the controller 100 via a signal. The second end of the other sensing wire 75 passes through the hollow structure through the second swing arm 722 and the second rotating shaft 742 and is connected to the controller 100 via a signal. This design utilizes the resistance change of the metal strips 711 to detect ground moisture. The hollow structure of the swing arms and rotating shafts not only ensures the smooth connection of the sensing wires 75 but also enhances the mechanical stability and durability of the entire ground moisture sensing mechanism 7.

[0065] Specifically, the first swing arm 721, the second swing arm 722, the first rotating shaft 741, and the second rotating shaft 742 are all hollow, interconnected metal tubes.

[0066] like Figure 5 and Figure 6 As shown, the ground moisture sensing mechanism 7 also includes a first spring and a second spring 762. One end of the first spring is connected to the middle of the first swing arm 721, and the other end of the first spring is connected to the outer casing 9. One end of the second spring 762 is connected to the second swing arm 722, and the other end of the second spring 762 is connected to the outer casing 9. The spring design allows the ground moisture sensing mechanism 7 to automatically retract when not in use and to lie flush against the ground when in use, improving the portability and ease of use of the device.

[0067] Specifically, the first swing arm 721 and the second swing arm 722 are respectively provided with a first swing arm spring connecting post 731 and a second swing arm spring connecting post 732. The ground moisture sensing mechanism 7 is retractable. The outer shell 9 is provided with a first outer shell spring connecting post and a second outer shell spring connecting post 772. The two ends of the first spring are respectively connected to the first swing arm spring connecting post 731 and the first outer shell spring connecting post. The two ends of the second spring 762 are respectively connected to the second swing arm spring connecting post 732 and the second outer shell spring connecting post 772. When the device is not in use, simply pull the ground moisture sensing mechanism 7 upwards. Under the action of the spring, the ground moisture sensing mechanism 7 will fit in the non-use position for easy transportation. When in use, simply pull the ground moisture sensing mechanism 7 downwards. Under the action of the spring, the ground moisture sensing mechanism 7 will fit tightly against the ground. When there is water on the ground, the resistance between the metal strips 711 of the ground moisture sensor 7 decreases, and the ground moisture sensor 7 will send a signal to the controller through the ground moisture transmitter 107. Then the controller will broadcast a ground moisture alarm voice through the voice module.

[0068] In this embodiment, the emergency cooling device for the computer room also includes a return air temperature sensor 106, an outlet air temperature sensor 105, and a controller 100. The return air temperature sensor 106, the outlet air temperature sensor 105, and the cooling fan 5 are all connected to the controller 100 via signals. A wind speed sensor 103 is installed at the outlet of the cooling fan 5, and the wind speed sensor 103 is connected to the controller 100 via signals. This configuration allows the controller 100 to monitor the return and outlet air temperatures and the fan speed in real time, and automatically adjust the fan speed using a PID algorithm to ensure that the computer room temperature remains stable within the set range, thus improving the intelligence and efficiency of emergency cooling.

[0069] The emergency cooling device for the computer room also includes a voice module 104, which is connected to the controller 100. The device also includes a touch screen display 101, which is connected to the controller 100. Casters 8 are installed at the bottom of the outer casing 9. An electrical compartment 6 is located inside the outer casing 9, at the top. This structure makes the operation of the emergency cooling device more intuitive and user-friendly. Maintenance personnel can easily set and monitor key parameters such as target temperature, wind speed, and cooling power through the touch screen display 101. The voice module 104 can issue timely voice warnings in emergencies such as ice depletion or water leakage, improving the device's response speed and safety. The casters 8 make the device easy to move, adapting to different computer room layouts, while the electrical compartment 6 centrally manages all electronic control components, simplifying maintenance and upgrades.

[0070] Specifically, a pair of sensing wires 75 are connected to a ground moisture transmitter 107 inside the electrical compartment 6, and the ground moisture transmitter 107 is connected to a PLC (controller).

[0071] In this embodiment, the electrical compartment 6 contains a first power module 108 (AC220V / 48), a second power module 109 (DC48 / 24), a PLC (controller), a ground moisture transmitter 107, and a DC motor driver 102. A touch screen 101 is installed on the outer surface of the electrical compartment 6.

[0072] The device is powered by both AC and DC. When there is AC power in the computer room, it can be connected to 220V AC power and powered by the first power module 108 and the second power module 109. When there is no AC power in the computer room, the second DC power supply in the computer room can be connected to the DC power terminal 110 of the device. The device is compatible with both AC and DC, making the application more flexible and convenient.

[0073] The voice module 104 of this device can use a compatible GD voice module to play pre-recorded voice messages. Communication between the GD voice module and the PLC is typically achieved via RS485 serial communication. By ensuring consistency in the serial port baud rate, data bits, stop bits, and other parameters of the PLC and voice module 104, a serial communication program is written in the PLC to send specific commands to the GD voice module to control voice playback. Upon receiving the command, the GD voice module plays the corresponding voice message.

[0074] The device is controlled by a PLC and is equipped with a touch screen 101. The touch screen 101 is connected to the PLC via a communication port. The touch screen 101 is used to set and display the target temperature, real-time return air temperature, air flow rate and cooling power.

[0075] The PLC controls the speed of the cooling fan 5 through the DC motor driver 102. The air inlet of the cooling fan 5 and the air outlet of the device are respectively equipped with a return air temperature sensor 106 and an outlet air temperature sensor 105 to measure the return air temperature t1 and the outlet air temperature t2. The PLC can manually set the target temperature. The PLC compares the target temperature with the actual return air temperature, performs PID calculations, and then adjusts the fan speed through the DC motor driver 102.

[0076] The PLC performs PID calculations internally to determine the control output.

[0077] The PID calculation method is as follows: U(t)=Kp*(t1-t2)+Ki*∫(t1-t2)dt+Kd*d(t1-t2)dt.

[0078] t1 is the return air temperature, t2 is the target temperature, Kp is the proportional coefficient, Ki is the integral coefficient, and Kd is the derivative coefficient. The values ​​of Kp, Ki, and Kd are not fixed, but are determined by adjusting based on the dynamic characteristics of the controlled object, the control objective, and the response performance requirements.

[0079] The PLC uses the PID calculation results to control the DC motor driver 102 via analog output (usually a 0-10V or 4-20mA signal). The DC motor driver 102 adjusts the voltage or current of the cooling fan 5 motor according to the analog signal, thereby controlling the speed of the cooling fan 5.

[0080] A wind speed sensor 103 is installed at the air outlet of the cooling fan 5 to measure the wind speed V. The airflow rate Q (m³ / s) of the cooling fan 5 is... 3 The calculation method for ( / s) is: Q=A*V=π*(D / 2)2*V=π*D2*V / 4.

[0081] Where A is the air outlet area (m²) of cooling fan 5. 2V is the wind speed (m / s), and D is the outlet diameter of the cooling fan 5 (m).

[0082] The method for calculating the cooling power P (cooling capacity) of the device is: P = ρ * Q * cp * (t1 - t2).

[0083] P is the cooling power, measured in watts (W). cp is the specific heat capacity of air, measured in joules per kilogram per degree Celsius (J / (kg·℃)), which is approximately 1005 J / (kg·℃) for air.

[0084] Where t1 is the return air temperature in degrees Celsius (°C), t2 is the outlet air temperature in degrees Celsius (°C), and ρ is the air density, approximately 1.2 kg / m³. 3 (Under standard conditions)

[0085] Substituting the flow rate Q into the formula: P=ρ*π*D2*V / 4*cp*(t1-t2).

[0086] Where D is the diameter of cooling fan 5, V is the air velocity at the outlet of cooling fan 5, t1 is the return air temperature, and t2 is the outlet air temperature. All four parameters are either designed or measurable, meaning they are known parameters. Therefore, the PLC can calculate the real-time cooling power of the device. The real-time cooling power data allows maintenance personnel to have an intuitive understanding of the cooling or heat load in this area of ​​the computer room.

[0087] Figure 10This is a flowchart of the control system for the emergency cooling device in the computer room. The following diagram further explains the device's operation and procedures: When a computer room air conditioning malfunction causes localized high temperatures, place the device in the high-temperature area. Maintenance personnel fill the first heat exchanger 1 and ice storage tank 3 with crushed ice. The device is then connected to 220V AC power or the computer room's 48V DC power supply and turned on. The cooling fan 5 operates, and the hot air in the computer room flows through the second heat exchanger 2 and the first heat exchanger 1. The chilled water in the second heat exchanger 2 and the crushed ice flowing through the first heat exchanger 1 interact with the air flowing through the second heat exchanger 2. The air is cooled. After the device is powered on, the PLC detects the infrared light emitted by the infrared transmitter through the infrared receiver. If infrared light is detected, it means that all the crushed ice in the ice storage tank 3 has entered the first heat exchanger 1, and the ice storage tank 3 needs to be replenished in time. At this time, the PLC controls the vibrator 31 to stop vibrating and controls the voice module 104 to play voice 1, such as "The device is short of ice, please replenish ice in time". If the infrared receiver does not detect infrared light, it means that there is ice in the ice storage tank 3, and the infrared light is blocked by the ice in the ice storage tank 3, so there is no need to replenish ice for the time being. If the PLC detects water leakage on the ground through the ground moisture transmitter 107 and the ground moisture sensor 7, it plays voice 2, such as "There is water leakage in the machine room, please deal with it immediately" through the voice module 104. When a large amount of ice melts in the first heat exchanger 1, the melted ice water reaches a certain height in the water collection tank 4, causing the water level switch 41 to close. Upon receiving this signal, the PLC controls the water pump 42 to operate, thereby pumping the ice water from the water collection tank 4 to the second heat exchanger 2 for heat exchange. When the water level in the water collection tank 4 drops to a certain height, the PLC receives this signal and controls the water pump 42 to stop operating. Operators can set a target temperature on the touch screen 101 during the initial or ongoing operation of the system. The PLC performs PID calculations on this temperature and the collected return air temperature, transmitting the calculation result to the DC motor driver 102 in the form of a signal voltage or signal current, thereby adjusting the speed of the cooling fan 5. In addition, the PLC continuously calculates the real-time cooling power based on the collected wind speed, return air temperature t1, and outlet air temperature t2 data, combined with the diameter of the cooling fan 5. The manually set target temperature, the collected return air temperature t1, outlet air temperature t2, the calculated airflow, and the cooling power are all displayed on the touch screen 101.

[0088] The emergency cooling device for computer rooms provided in this embodiment has the following significant beneficial effects:

[0089] 1) Significantly improve cooling capacity: By setting up a two-stage heat exchanger, the first-stage heat exchanger utilizes the direct heat exchange between crushed ice and air, while the second-stage heat exchanger further utilizes the low-temperature characteristics of ice water, thus achieving full utilization of cooling resources and significantly improving the cooling capacity of the device, enabling it to cope with local high-temperature conditions in the computer room more quickly and effectively.

[0090] 2) Maximizing Cooling Capacity Utilization: Traditional emergency cooling methods often directly discharge the melted ice water, resulting in a huge waste of cooling capacity. This invention guides the melted ice water to a second-stage heat exchanger for reuse, extending the utilization of cooling resources from the ice block stage to the melted ice water stage, significantly improving the cooling capacity utilization rate and effectively avoiding resource waste.

[0091] 3) Enhanced Reliability Through Automated Control: The device employs a PLC automatic control system (controller) that can precisely adjust the fan speed based on real-time temperature changes in the computer room, ensuring the continuity and reliability of the cooling effect. Simultaneously, the introduction of infrared detection technology and ground moisture sensors enables the device to automatically monitor the amount of ice debris and ground humidity, providing timely warnings and adjustments, enhancing the level of automated management for emergency cooling and reducing the need for human intervention.

[0092] 4) Enhanced Flexibility and Compatibility: This device is designed for both AC and DC operation. It can be powered by an AC220V / DC48 power module in environments with AC power supply, or by the 48V DC power supply in the computer room when AC power is unavailable. This greatly improves the device's application flexibility and reliability. Additionally, it is equipped with omnidirectional casters at the bottom for easy and rapid movement and positioning within the computer room, meeting the needs for rapid response in various emergency situations.

[0093] Through the innovative design and application of automated control technology, this emergency cooling device for computer rooms not only effectively improves cooling efficiency and resource utilization, but also enhances the system's automated management and application flexibility, providing a more reliable and efficient solution for emergency cooling of communication computer rooms.

[0094] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0095] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0096] In the description of this invention, it should be understood that "a plurality of" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing the invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0097] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0098] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0099] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An emergency cooling device for computer rooms, characterized in that, The emergency cooling device for the computer room includes: Outer shell (9); An ice storage tank (3) is disposed at the upper end of the outer shell (9), and the ice storage tank (3) has an ice outlet; The first heat exchanger (1) is disposed inside the outer shell (9) and located below the ice storage tank (3). The first heat exchanger (1) has an ice block receiving cavity, an ice inlet and a vent. The ice inlet is connected to the upper end of the ice block receiving cavity. The vent penetrates the side wall of the first heat exchanger (1) and is connected to the ice block receiving cavity. The ice inlet is located below the ice outlet. The second heat exchanger (2) is disposed inside the outer shell (9). The second heat exchanger (2) has an ice water receiving cavity, an inlet (21) and an outlet (22). The inlet (21) and the outlet (22) are respectively connected to the ice water receiving cavity. The lower end of the first heat exchanger (1) has a water outlet connected to the ice block receiving cavity. The water outlet is connected to the inlet (21). A cooling fan (5) is disposed on the housing (9) and located on the side of the first heat exchanger (1) and / or the second heat exchanger (2).

2. The emergency cooling device for computer rooms according to claim 1, characterized in that, The emergency cooling device for the computer room also includes a water collection tank (4) and a water pump (42). The water collection tank (4) is located below the first heat exchanger (1). The water outlet is connected to the upper opening of the water collection tank (4). The water pump (42) is located inside the water collection tank (4). The outlet of the water pump (42) is connected to the water inlet (21).

3. The emergency cooling device for computer rooms according to claim 2, characterized in that, The computer room emergency cooling device also includes a controller (100) and a water level detection device. The water level detection device is installed in the water collection tank (4). The water level detection device and the water pump (42) are respectively connected to the controller (100) via signal.

4. The emergency cooling device for computer rooms according to claim 3, characterized in that, The computer room emergency cooling device also includes a vibrator (31) and an ice quantity detection device. The vibrator (31) is installed on the ice storage tank (3), and the ice quantity detection device is installed inside the ice storage tank (3). The vibrator (31) and the ice quantity detection device are respectively connected to the controller (100) via signals.

5. The emergency cooling device for computer rooms according to claim 1, characterized in that, The emergency cooling device for the computer room also includes a ground moisture sensor (7), a controller (100), and an alarm. The ground moisture sensor (7) is retractably mounted on the outer casing (9). The ground moisture sensor (7) includes a ground moisture detector (71). The ground moisture sensor (7) has a detection position for the ground moisture detector (71) to contact the ground and a storage position for it to be stored in the outer casing (9). The ground moisture sensor (7) and the alarm are respectively connected to the controller (100) via signals.

6. The emergency cooling device for computer rooms according to claim 5, characterized in that, The ground moisture sensing mechanism (7) further includes a first swing arm (721) and a second swing arm (722). The first end of the first swing arm (721) is hinged to the outer shell (9) through a first pivot (741), and the first end of the second swing arm (722) is hinged to the outer shell (9) through a second pivot (742). The second ends of the first swing arm (721) and the second ends of the second swing arm (722) are respectively connected to the two ends of the ground moisture detector (71).

7. The emergency cooling device for computer rooms according to claim 6, characterized in that, The ground moisture detector (71) includes two metal strips (711), an insulating member (712), and two sensing wires (75). The insulating member (712) is located between the two metal strips (711) to separate the two metal strips (711). The first ends of the two sensing wires (75) are respectively connected to the two metal strips (711). The first swing arm (721), the second swing arm (722), the first rotating shaft (741), and the second rotating shaft (742) are all hollow structures. The second end of one of the sensing wires (75) passes through the hollow structure through the first swing arm (721) and the first rotating shaft (741) and is connected to the controller (100) via signal. The second end of the other sensing wire (75) passes through the hollow structure through the second swing arm (722) and the second rotating shaft (742) and is connected to the controller (100) via signal.

8. The emergency cooling device for computer rooms according to claim 6, characterized in that, The ground moisture sensing mechanism (7) further includes a first spring and a second spring (762). One end of the first spring is connected to the middle of the first swing arm (721), and the other end of the first spring is connected to the outer shell (9). One end of the second spring (762) is connected to the second swing arm (722), and the other end of the second spring (762) is connected to the outer shell (9).

9. The emergency cooling device for computer rooms according to claim 1, characterized in that, The computer room emergency cooling device also includes a return air temperature sensor (106), an outlet air temperature sensor (105), and a controller (100). The return air temperature sensor (106), the outlet air temperature sensor (105), and the cooling fan (5) are respectively connected to the controller (100). A wind speed sensor (103) is installed at the air outlet of the cooling fan (5), and the wind speed sensor (103) is connected to the controller (100) via signal.

10. The emergency cooling device for computer rooms according to claim 3, 5, or 9, characterized in that, The computer room emergency cooling device also includes a voice module (104), which is signal-connected to the controller (100); The computer room emergency cooling device also includes a touch screen (101), which is signal-connected to the controller (100); The bottom of the outer casing (9) is provided with a pulley (8); An electrical compartment (6) is provided inside the outer shell (9), and the electrical compartment (6) is located at the upper end of the outer shell (9).

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