Cold channel control circuit with fire-fighting function for cabinet

Abstract

The utility model discloses a cold channel control circuit with a fire-fighting function for a cabinet, and belongs to the technical field of data center cold channels. The cold channel control circuit with the fire-fighting function for the cabinet comprises a switching power supply, a switching module, an intermediate relay, an electromagnetic contactor, an alarm module and a direct current electromagnet, opening and closing of the intermediate relay are controlled through a signal given by a machine room fire-fighting controller, then opening and closing of the electromagnetic contactor are driven, rapid and accurate on-off of a circuit is achieved, and finally automatic opening and closing of the skylight are achieved through switching of the working state of the direct-current electromagnet. Intelligent and automatic skylight opening and closing are achieved, the fire safety level of a data center is improved, the emergency response capacity of the system is improved, the control function of an alarm device is integrated, an alarm signal can be sent out in time in an emergency, and the safety and the early warning effect of a machine room are further enhanced.

Description

Technical Field

[0001] This utility model relates to a cold aisle control circuit with fire protection function for server racks, belonging to the field of data center cold aisle technology. Background Technology

[0002] In recent years, with the full arrival of the big data era, data centers, as the core infrastructure of the information society, have experienced explosive growth in the amount of data they handle. This change has not only driven the rapid development of data processing technology but also posed unprecedented challenges to data center security. In particular, the physical security of data centers, especially data security and disaster prevention capabilities, has become a focus of industry attention. Due to the large number of high-performance servers and storage devices deployed within data centers, the dense distribution of these devices has led to a surge in energy consumption, resulting in increasingly complex power supply systems and a significant increase in the number of power supply devices. Against this backdrop, the fire safety requirements for data centers have also risen, becoming an indispensable part of ensuring the stable operation of data centers.

[0003] Traditional data center cold aisle control circuits are relatively simple, primarily relying on switching power supplies to convert AC220V AC to DC24V DC, providing a stable and reliable power supply to the cold aisle skylight electromagnets. Skylight opening is typically controlled manually via buttons. While this design meets basic needs in daily operations, its limitations become glaringly apparent in emergencies, especially during data center fires. Fires are often accompanied by dense smoke and high temperatures, making it difficult for personnel to quickly reach the scene and manually operate the system. This not only delays skylight opening but can also endanger the lives of operators. Therefore, upgrading existing control circuits to incorporate intelligent and automated fire suppression systems has become an urgent need to improve data center fire safety and protect data assets. Utility Model Content

[0004] To address the aforementioned issues and achieve automated and intelligent opening and closing of cold aisle skylights, this utility model provides a cold aisle control circuit with fire protection function for server racks. The technical solution is as follows.

[0005] The cold aisle control circuit with fire protection function for the cabinet of this utility model includes: a switching power supply UR, a switching module SB, an intermediate relay KA, an electromagnetic contactor KM1, an alarm module HA, and a DC electromagnet YA.

[0006] The first terminal of the normally open contact of the intermediate relay KA and the first terminal of the main contact of the electromagnetic contactor KM1 are connected to the positive terminal of the switching power supply UR; the second terminal of the coil of the intermediate relay KA, the second terminal of the alarm module HA, and the second terminal of the DC electromagnet YA are connected to the negative terminal of the switching power supply UR; the second terminal of the normally open contact of the intermediate relay KA is connected to the first terminal of the alarm module HA; the second terminal of the main contact of the electromagnetic contactor KM1 is connected to the first terminal of the DC electromagnet YA.

[0007] The first terminal of the second normally open contact of the intermediate relay KA, the first terminal of the switching module SB, and the L terminal of the switching power supply UR are connected to the L line of the AC power supply; the second terminal of the coil of the electromagnetic contactor KM1 and the N terminal of the switching power supply UR are connected to the N line of the AC power supply; the second terminal of the switching module SB and the second terminal of the second normally open contact of the intermediate relay KA are connected to the first terminal of the coil of the electromagnetic contactor KM1.

[0008] One end of the external fire signal is connected to the positive terminal of the switching power supply UR, and the other end is connected to the first terminal of the coil of the intermediate relay KA.

[0009] In one embodiment, the switching power supply UR is a 24V switching power supply.

[0010] In one embodiment, the circuit further includes a miniature circuit breaker QF1, wherein the first terminal of the second normally open contact of the intermediate relay KA, the first terminal of the switching module SB, and the L terminal of the switching power supply UR are connected to the L line of the AC power supply through the miniature circuit breaker QF1; and the second terminal of the coil of the electromagnetic contactor KM1 and the N terminal of the switching power supply UR are connected to the N line of the AC power supply through the miniature circuit breaker QF1.

[0011] In one embodiment, the switch module SB includes a normally open button.

[0012] In one embodiment, the alarm module HA includes an audible and visual buzzer.

[0013] In one embodiment, the first terminal of the first normally open contact of the intermediate relay KA and the first terminal of the main contact of the electromagnetic contactor KM1 are connected to the positive terminal of the switching power supply UR via a cable with a fuse.

[0014] In one embodiment, the circuit further includes a terminal block.

[0015] Advantages of this utility model:

[0016] This invention uses signals from the computer room fire control controller to control the opening and closing of intermediate relays, which in turn drives the opening and closing of electromagnetic contactors, achieving rapid and accurate circuit switching. Finally, the automatic opening and closing of the skylight is achieved by switching the working state of the DC electromagnet. Alternatively, the skylight can also be opened and closed via a switch button. Compared with existing technologies, this invention not only achieves intelligent and automated skylight opening and closing but also improves the fire safety level of the data center and enhances the system's emergency response capabilities.

[0017] In addition, this utility model also integrates the control function of alarm devices such as audible and visual buzzers, which can promptly issue alarm signals in emergency situations, further enhancing the safety and early warning effect of the computer room and providing strong protection for the fire safety of the computer room. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a cold aisle control circuit with fire protection function for a server rack, according to this utility model. Detailed Implementation

[0019] like Figure 1 The diagram shows a cold aisle control circuit with fire protection function for a cabinet according to this utility model. The circuit includes: miniature circuit breaker QF1, 24V switching power supply UR, normally open button SB, intermediate relay KA, normally closed electromagnetic contactor KM1, audible and visual buzzer HA, DC electromagnet YA, and terminal block XT1-18.

[0020] In this embodiment, the 220V AC voltage is connected to the 24V switching power supply UR through the miniature circuit breaker QF1 input line, converting the mains power into 24V DC voltage to power the subsequent circuit.

[0021] Specifically, point 4 of intermediate relay KA and point R1 of normally closed electromagnetic contactor KM1 are connected to the positive terminal of 24V switching power supply UR via a cable with a fuse; point 8 of intermediate relay KA, point X2 of sound and light buzzer HA, and point 2 of DC electromagnet YA are connected to the negative terminal of 24V switching power supply UR; point 6 of intermediate relay KA is connected to point X1 of sound and light buzzer HA; point R2 of normally closed electromagnetic contactor KM1 is connected to point 1 of DC electromagnet YA; point 3 of intermediate relay KA, points 23 of normally open pushbutton SB, and point L of 24V switching power supply UR are connected to the L line (live wire) of miniature circuit breaker QF1; point A2 of normally closed electromagnetic contactor KM1 and point N of 24V switching power supply UR are connected to the N line (neutral wire) of miniature circuit breaker QF1; and point 5 of intermediate relay KA and point 24 of normally open pushbutton SB are connected to point A1 of normally closed electromagnetic contactor KM1.

[0022] The working principle of this utility model is to use the normally open button SB to control the coil of the normally closed electromagnetic contactor KM1 to be de-energized and energized. The specific control process is as follows:

[0023] (1) Initial state: The coil of intermediate relay KA is de-energized, the normally open contacts 6 and 4 of KA are open, and the sound and light buzzer HA is de-energized and does not work; the normally open contacts 3 and 5 of intermediate relay KA are open, the coil of normally closed electromagnetic contactor KM1 is de-energized, the main contacts R1 and R2 of KM1 are closed, and the DC electromagnet YA works.

[0024] (2) Press button SB: The coil of normally closed electromagnetic contactor KM1 is energized, the main contacts R1 and R2 of KM1 are opened, and the DC electromagnet YA is de-energized and does not work.

[0025] (3) Release button SB: The coil of normally closed electromagnetic contactor KM1 is de-energized, the main contacts R1 and R2 of KM1 are closed, and the DC electromagnet YA is working.

[0026] (4) When a closed-point fire alarm signal is received, the coil of the intermediate relay KA is energized, the normally open contacts 6 and 4 of KA close, and the audible and visual buzzer HA emits an alarm signal. The normally open contacts 3 and 5 of the intermediate relay KA close, the coil of the normally closed electromagnetic contactor KM1 is de-energized, the main contacts R1 and R2 open, and the DC electromagnet YA does not work.

[0027] The opening and closing of the cold aisle skylight is achieved by controlling the working state of the DC electromagnet YA. When the DC electromagnet YA is not working, the skylight opens automatically by gravity, and when the DC electromagnet YA is working, the skylight closes.

[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A cold aisle control circuit with fire protection function for server racks, characterized in that, The circuit includes: a switching power supply UR, a switching module SB, an intermediate relay KA, an electromagnetic contactor KM1, an alarm module HA, and a DC electromagnet YA; The first terminal of the normally open contact of the intermediate relay KA and the first terminal of the main contact of the electromagnetic contactor KM1 are connected to the positive terminal of the switching power supply UR; the second terminal of the coil of the intermediate relay KA, the second terminal of the alarm module HA, and the second terminal of the DC electromagnet YA are connected to the negative terminal of the switching power supply UR; the second terminal of the normally open contact of the intermediate relay KA is connected to the first terminal of the alarm module HA; the second terminal of the main contact of the electromagnetic contactor KM1 is connected to the first terminal of the DC electromagnet YA. The first terminal of the second normally open contact of the intermediate relay KA, the first terminal of the switching module SB, and the L terminal of the switching power supply UR are connected to the L line of the AC power supply; the second terminal of the coil of the electromagnetic contactor KM1 and the N terminal of the switching power supply UR are connected to the N line of the AC power supply; the second terminal of the switching module SB and the second terminal of the second normally open contact of the intermediate relay KA are connected to the first terminal of the coil of the electromagnetic contactor KM1. One end of the external fire signal is connected to the positive terminal of the switching power supply UR, and the other end is connected to the first terminal of the coil of the intermediate relay KA.

2. The cold aisle control circuit with fire protection function for server racks according to claim 1, characterized in that, The switching power supply UR is a 24V switching power supply.

3. The cold aisle control circuit with fire protection function for server racks according to claim 1, characterized in that, The circuit also includes a miniature circuit breaker QF1. The first terminal of the second normally open contact of the intermediate relay KA, the first terminal of the switching module SB, and the L terminal of the switching power supply UR are connected to the L line of the AC power supply through the miniature circuit breaker QF1. The second terminal of the coil of the electromagnetic contactor KM1 and the N terminal of the switching power supply UR are connected to the N line of the AC power supply through the miniature circuit breaker QF1.

4. The cold aisle control circuit with fire protection function for server racks according to claim 1, characterized in that, The switch module SB includes a normally open button.

5. The cold aisle control circuit with fire protection function for server racks according to claim 1, characterized in that, The alarm module HA includes an audible and visual buzzer.

6. The cold aisle control circuit with fire protection function for server racks according to claim 1, characterized in that, The first terminal of the first normally open contact of the intermediate relay KA and the first terminal of the main contact of the electromagnetic contactor KM1 are connected to the positive terminal of the switching power supply UR via a cable with a fuse.

7. The cold aisle control circuit with fire protection function for server racks according to claim 1, characterized in that, The circuit also includes a terminal block.

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