Data center cabinet cooling system

Abstract

The utility model discloses a data center cabinet cooling system, and belongs to the technical field of data center cabinet operation heat treatment. According to the data center cabinet cooling system, two cooling loops are designed, namely, the first cooling loop adopts spraying refrigeration, the second cooling loop adopts cold plate refrigeration, and any one cooling loop or two cooling loops can be selectively adopted according to actual requirements; the refrigerating efficiency is improved, and the refrigerating requirements of different refrigerating capacities can be met. As the data center cabinet is a closed container, when a sprayer sprays carbon dioxide into the cabinet, the carbon dioxide absorbs heat and is gasified, then takes the cabinet as an energy storage container, is finally sucked out through a suction pressure pump at the top of the cabinet, is pressurized by a pump body and finally flows into a major cycle, and the cycle is repeated to form an energy-saving, efficient and energy-saving device. The utility model discloses a system with energy storage and waste heat recovery functions.

Description

TECHNICAL FIELD

[0001] The utility model belongs to data center cabinet operation heat treatment technical field, concretely relates to a data center cabinet cooling system. BACKGROUND

[0002] The data center cabinet is a closed container for installing servers, storage devices, network devices and the like. A large amount of heat is generated during the operation of the internal components of the cabinet. Traditionally, external air conditioning systems or traditional water-based technologies are used to achieve cooling. External air conditioning refrigeration has a low cooling efficiency due to the long distance from the heat source. The traditional water cooling technology shortens the distance from the heat source, but still has the problems of small refrigeration capacity and narrow refrigeration range. Both methods result in low refrigeration efficiency, which makes the PUE value of the data center (the ratio of the total energy consumed by the data center to the energy consumed by the IT load) high, resulting in energy waste.

[0003] In summary, the existing data center cabinet cooling system has the problem of low cooling efficiency. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem in the prior art, provides a data center cabinet cooling system, which is novel and reasonable in design, simple in structure, practical and easy to use.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A data center cabinet cooling system, comprising a compressor for compressing low-pressure carbon dioxide into high-temperature and high-pressure carbon dioxide, a first pressure reducing valve and a second pressure reducing valve for controlling the carbon dioxide pressure within a set pressure range, a heat exchanger, a first pressure pump, a second pressure pump, at least one spray nozzle arranged in the data center cabinet, and a cold plate; an opening is formed in the upper part of the data center cabinet;

[0007] The first outlet of the compressor is in communication with the inlet of the first pressure reducing valve, the outlet of the first pressure reducing valve is in communication with the inlet of each spray nozzle, the inlet of the suction pressure pump is connected to the opening of the data center cabinet, and the outlet of the suction pressure pump is communicated to the inlet of the compressor through the first pressure pump and the heat exchanger, forming a first cooling circuit;

[0008] The second outlet of the compressor is in communication with the inlet of the second pressure reducing valve, the outlet of the second pressure reducing valve is in communication with the inlet of at least one cold plate through a water distributor, the outlet of the cold plate is in communication with the inlet of a water collector, and the outlet of the water collector is communicated to the inlet of the compressor through the second pressure pump and the heat exchanger, forming a second cooling circuit.

[0009] Further, the first cooling circuit is further provided with a first temperature controller for controlling the temperature of the carbon dioxide, and the first temperature controller is arranged between the first pressure reducing valve and the sprayer.

[0010] Further, the first cooling circuit is further provided with a first safety valve, and the first safety valve is arranged between the first temperature controller and the sprayer.

[0011] Further, the first pressure reducing valve is used for adjusting the pressure of the carbon dioxide to be between 3.5 MP and 4 MP.

[0012] Further, the second pressure reducing valve is used for adjusting the pressure of the carbon dioxide to be between 4.8 MP and 5.2 MP.

[0013] Further, the heat exchanger comprises a first pipeline and a second pipeline for heat exchange with the first pipeline, the first pipeline of the heat exchanger is communicated with the inlet of the compressor, and the second pipeline of the heat exchanger is communicated with a recovery pipeline, and cold water in the recovery pipeline flows out as hot water after flowing into the second pipeline.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The data center cabinet cooling system of the utility model uses carbon dioxide as a cooling medium, and the carbon dioxide has the advantages of low viscosity and large cooling capacity, thereby reducing the space occupation of the cooling system and avoiding the influence of the cooling medium on the cooling target object. Two cooling circuits are designed, that is, the first cooling circuit uses a sprayer for refrigeration, and the second cooling circuit uses a cold plate for refrigeration. According to actual requirements, any one of the cooling circuits or both of the cooling circuits can be selected, thereby improving the refrigeration efficiency and meeting the refrigeration requirements of different cooling capacities. Since the data center cabinet is a closed container, when the sprayer sprays carbon dioxide gas into the cabinet, the carbon dioxide is gasified after absorbing heat and uses the cabinet as an energy storage container. Finally, the carbon dioxide is pumped out from the top of the cabinet by a suction pressure pump, is pressurized by a pump body, and finally flows out to the large circulation. The system can be formed by the circulation, and the system has the advantages of energy saving, high efficiency, energy storage and waste heat recovery.

[0016] The technical scheme of the utility model will be further described in detail below with reference to the drawings and embodiments. DRAWINGS

[0017] Figure 1 It is a structure schematic view of the data center cabinet cooling system embodiment of the utility model.

[0018] REFERENCE SIGNS:

[0019] 1. Compressor; 2. Heat exchanger; 3. First pressure reducing valve; 4. Second pressure reducing valve;

[0020] 5. First pressurizing pump; 6. Second pressurizing pump; 7. Sprayer; 8. Condensation plate;

[0021] 9. Data center cabinet; 10. First temperature controller; 11. Second temperature controller;

[0022] 12. First safety valve; 13. Second safety valve; 14. Suction pressure pump; 15. Recovery pipeline;

[0023] 16. Water distributor; 17. Water collector. Detailed Implementation

[0024] Example of a data center rack cooling system:

[0025] like Figure 1 As shown, the data center rack cooling system includes a compressor 1 for compressing low-pressure carbon dioxide into high-temperature, high-pressure carbon dioxide, a first pressure reducing valve 3 and a second pressure reducing valve 4 for controlling the carbon dioxide pressure within a set pressure range, a heat exchanger 2, a first pressurizing pump 5, a second pressurizing pump 6, at least one sprayer 7 and a cold plate disposed within the data center rack 9; an opening is provided at the top of the data center rack 9. Preferably, the sprayer 7 and the cold plate are provided in three sets (Note: determined according to the number of internal server components).

[0026] The compressor 1 has a first outlet connected to the inlet of the first pressure reducing valve 3. The outlet of the first pressure reducing valve 3 is connected to the inlet of each sprayer 7. The inlet of the suction pressure pump 14 is connected to the opening of the data center cabinet 9. The outlet of the suction pressure pump 14 is connected to the inlet of the compressor 1 via the first pressurizing pump 5 and the heat exchanger 2, forming a first cooling circuit. A first temperature controller 10 for controlling carbon dioxide temperature is also installed on the first cooling circuit, positioned between the first pressure reducing valve 3 and the sprayers 7. A first safety valve 12 is also installed on the first cooling circuit, positioned between the first temperature controller 10 and the sprayers 7. The sprayers 7 are used to cool the data center cabinet 9. The first pressure reducing valve 12 is used to adjust the carbon dioxide pressure between 3.5 MPa and 4 MPa.

[0027] The second outlet of the compressor 1 is communicated with the inlet of the second pressure reducing valve 4, the outlet of the second pressure reducing valve 4 is communicated with the inlet of at least one condensing plate 8 through the water distributor 16, the outlet of the condensing plate 8 is communicated with the inlet of the water collector 17, the outlet of the water collector 17 is communicated with the inlet of the compressor 1 through the second pressure pump 6 and the heat exchanger 2, forming a second cooling circuit. A second carbon dioxide temperature controller 11 is arranged on the second cooling circuit, and the second temperature controller 11 is arranged between the second pressure reducing valve 4 and the condensing plate 8. A second safety valve 13 is arranged on the second cooling circuit, and the second safety valve 13 is arranged between the second temperature controller 11 and the condensing plate 8. The second pressure reducing valve 13 is used to adjust the carbon dioxide pressure to 4.8MP to 5.2MP. Specifically, the carbon dioxide in the second cooling circuit passes through the second pressure reducing valve 4, the second temperature controller 11 and the second safety valve 13 to adjust the carbon dioxide pressure to about 5MP, and then enters the condensing plate 8.

[0028] The low-pressure carbon dioxide is compressed into gaseous carbon dioxide by the compressor 1, and is divided into two paths through the first outlet and the second outlet of the compressor 1. One path passes through the first pressure reducing valve 3, the first temperature controller 10 and the first safety valve 12 to adjust the carbon dioxide to about 5MP, and then enters the sprayer 7. The sprayer 7 sprays the carbon dioxide to the equipment to be cooled, and cools the equipment. When the carbon dioxide in the data center cabinet 9 reaches a certain amount, the suction pressure pump 14 sucks away the carbon dioxide through the opening of the data center cabinet 9. The carbon dioxide enters the compressor 1 through the first pressure pump 5 to realize the circulation of the first cooling circuit. The inlet of the suction pressure pump 14 is sealingly connected with the opening of the data center cabinet 9, so as to prevent the carbon dioxide gas from leaking, and avoid waste of energy and pollution to the environment. The other path passes through the second pressure reducing valve 4, the second temperature controller 11 and the second safety valve 13 to adjust the carbon dioxide to 4.8MP to 5.2MP, and then enters the condensing plate 8. The carbon dioxide in the condensing plate 8 exchanges the heat energy of the data center cabinet 9 to cool the data center cabinet 9. The carbon dioxide in the multiple condensing plates 8 is uniformly returned to the compressor 1 through the water collector 17 to realize the circulation of the second cooling circuit. The second pressure pump 6 promotes the circulation of the second cooling circuit.

[0029] In order to improve the utilization efficiency of heat energy, the heat exchanger 2 comprises a first pipeline and a second pipeline for heat exchange with the first pipeline. The first pipeline of the heat exchanger 2 is communicated with the inlet of the compressor 1, and the second pipeline of the heat exchanger 2 is communicated with the recovery pipeline 15. The cold water in the recovery pipeline 15 flows into the second pipeline and then flows out as hot water. The heat energy in the first pipeline is exchanged through the second pipeline to achieve the effect of heat dissipation. At the same time, the second pipeline stores the exchanged heat energy in the cold water to obtain hot water, which can be used as hot water for daily life in the data center park.

[0030] The system improves refrigeration efficiency through the first cooling circuit and the second cooling circuit, and solves the problems of long refrigeration distance from the heat source and small refrigeration range through the sprayer 7 of the first refrigeration circuit, so as to reduce the PUE value of the data center and avoid waste of energy. And carbon dioxide is used as the cooling medium, which has the advantages of superior heat exchange performance and low gas viscosity.

[0031] The above is only a preferred embodiment of the present application, and does not limit the present application in any way. Any simple modification, change or equivalent structural change made according to the technical essence of the present application to the above embodiments is still within the protection scope of the technical solution of the present application.

Claims

1. A data center rack cooling system, characterized in that: It includes a compressor (1) for compressing low-pressure carbon dioxide into high-temperature and high-pressure carbon dioxide, a first pressure reducing valve (3) and a second pressure reducing valve (4) for controlling the carbon dioxide pressure within a set pressure range, a heat exchanger (2), a first pressurizing pump (5), a second pressurizing pump (6), and at least one set of sprayers (7) and cold plates (8) installed in a data center cabinet (9); the data center cabinet (9) has an opening at the top. The first outlet of the compressor (1) is connected to the inlet of the first pressure reducing valve (3), the outlet of the first pressure reducing valve (3) is connected to the inlet of each sprayer (7), the inlet of the suction pressure pump (14) is connected to the opening of the data center cabinet (9), and the outlet of the suction pressure pump (14) is connected to the inlet of the compressor (1) through the first pressurizing pump (5) and the heat exchanger (2) to form the first cooling circuit; The second outlet of the compressor (1) is connected to the inlet of the second pressure reducing valve (4). The outlet of the second pressure reducing valve (4) is connected to the inlet of at least one cold plate (8) through a water distributor (16). The outlet of the cold plate (8) is connected to the inlet of a water collector (17). The outlet of the water collector (17) is connected to the inlet of the compressor (1) through a second pressurizing pump (6) and a heat exchanger (2), forming a second cooling circuit. The heat exchanger (2) includes a first pipeline and a second pipeline for exchanging heat with the first pipeline. The first pipeline of the heat exchanger (2) is connected to the inlet of the compressor (1). The second pipeline of the heat exchanger (2) is connected to the recovery pipeline (15). The cold water in the recovery pipeline (15) flows into the second pipeline and then flows out as hot water.

2. A data center rack cooling system according to claim 1, characterized in that: The first cooling circuit is also provided with a first temperature controller (10) for controlling the carbon dioxide temperature, which is located between the first pressure reducing valve (3) and the sprayer (7); the second cooling circuit is also provided with a second temperature controller (11) for controlling the carbon dioxide temperature, which is located between the second pressure reducing valve (4) and the cold plate (8).

3. A data center rack cooling system according to claim 2, characterized in that: The first cooling circuit is also provided with a first safety valve (12), which is located between the first temperature controller (10) and the sprayer (7); the second cooling circuit is also provided with a second safety valve (13), which is located between the second temperature controller (11) and the cold plate (8).

4. A data center rack cooling system according to claim 3, characterized in that: The first pressure reducing valve (3) is used to adjust the carbon dioxide pressure between 3.5 MPa and 4 MPa.

5. A data center rack cooling system according to claim 3, characterized in that: The second pressure reducing valve (4) is used to adjust the carbon dioxide pressure between 4.8 MPa and 5.2 MPa.

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