Data center

Abstract

The invention provides a data center, and relates to the technical field of refrigeration of data centers. The data center comprises a refrigerating system and a machine room, the refrigerating system comprises an evaporative condenser, a pump cabinet and a heat exchange tail end, and the machine room comprises at least one machine cabinet. Wherein the pump cabinet comprises a hot gas bypass valve; the input end of the hot gas bypass valve is connected with the output end of a compressor in the pump cabinet, and the output end of the hot gas bypass valve is connected with the input end of the compressor. The hot gas bypass valve connected with the compressor is arranged in the pump cabinet, so that the purpose of manually increasing the load for the compressor is achieved, the phenomena of surge shutdown and the like of the compressor in a low-load scene of a machine room are avoided, and the operation stability of the compressor and a refrigerating system is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of data centers, in particular to the technical field of refrigeration of data centers, and specifically to a data center. Background Art

[0002] With the rapid development of Internet technology, the demand for data centers is increasing. Data centers are a set of complex equipment, including not only computer systems and supporting equipment, but also redundant data communication connection equipment, environmental control equipment, monitoring equipment and various safety devices. The various equipment included in the data center will generate a lot of heat during operation. If the heat is not dissipated in time through the refrigeration system, the equipment included in the data center will malfunction due to excessive temperature, affecting the normal operation of the data center.

[0003] However, in the face of some extreme working conditions, such as when the refrigeration system is running in a low-load scenario in the computer room, the compressor in the refrigeration system will surge and shut down due to the lower load, and will no longer be able to effectively cool, thus affecting the normal operation of the data center. Summary of the invention

[0004] According to a first aspect of the present disclosure, a data center is provided, the data center comprising a refrigeration system and a computer room, the refrigeration system comprising an evaporative condenser, a pump cabinet and a heat exchange terminal, the computer room comprising at least one cabinet; wherein the pump cabinet comprises a hot gas bypass valve; the input end of the hot gas bypass valve is connected to the output end of a compressor in the pump cabinet, and the output end of the hot gas bypass valve is connected to the input end of the compressor.

[0005] The present invention provides a hot gas bypass valve in the pump cabinet, and connects the hot gas bypass valve to the compressor in the pump cabinet, so that the hot gas bypass valve bypasses the gas output by the compressor through the exhaust port to the suction port of the compressor, thereby artificially increasing the load of the compressor. Even in the low-load scenario of the computer room, the compressor will not produce surge shutdown and the like, thereby improving the stability and applicability of the refrigeration system during operation.

[0006] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0008] Figure 1 is a schematic diagram according to a first embodiment of the present disclosure;

[0009] Figure 2 is a schematic diagram according to a second embodiment of the present disclosure;

[0010] Figure 3 is a schematic diagram according to a third embodiment of the present disclosure;

[0011] Figure 4 is a schematic diagram according to a fourth embodiment of the present disclosure. DETAILED DESCRIPTION

[0012] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the description of well-known functions and mechanisms is omitted in the following description.

[0013] Figure 1 Schematic diagram of the first embodiment of the present disclosure. Figure 1 As shown in , this embodiment shows a structural schematic diagram of a data center.

[0014] In this embodiment, the data center includes a refrigeration system and a computer room; wherein the refrigeration system includes an evaporative condenser 10, a pump cabinet 20 and a heat exchange terminal 30; and the computer room of the data center includes at least one cabinet 40.

[0015] In this embodiment, IT equipment or servers are deployed in the cabinet 40, and multiple cabinets 40 are arranged in rows and parallel in the computer room.

[0016] The refrigeration system in this embodiment cools the machine room by air cooling. The evaporative condenser 10 and the pump cabinet 20 in the refrigeration system constitute an outdoor unit, and the heat exchange terminal 30 is located indoors. Among them, the pump cabinet 20 located outdoors also includes a hot gas bypass valve.

[0017] That is to say, the refrigeration system in this embodiment performs air cooling on the computer room of the data center through the circulation channel formed by the evaporative condenser 10, the pump cabinet 20 and the heat exchange terminal 30, and when facing a low-load scenario in the computer room (for example, a small number of machines deployed in the computer room), the hot air bypass valve in the pump cabinet 20 is used to increase the load of the compressor in the pump cabinet 20, thereby ensuring that the compressor can operate normally even in a low-load scenario.

[0018] Specifically, the refrigeration system performs return air heat exchange with the indoor air of the machine room through the liquid refrigerant at the heat exchange terminal 30 to cool the machine room, and returns the gaseous refrigerant converted after the return air heat exchange to the evaporative condenser 10 through the refrigerant circulation channel formed by the evaporative condenser 10, the pump cabinet 20 and the heat exchange terminal 30, so as to perform phase change heat exchange on the gaseous refrigerant and then convert it into liquid refrigerant for return air heat exchange with the indoor air of the machine room, thereby performing a cycle.

[0019] Figure 2 is a schematic diagram according to the second embodiment of the present disclosure. Figure 2 As shown in , this embodiment shows a structural schematic diagram of a refrigeration system of a data center.

[0020] The refrigeration system in this embodiment is used to perform air cooling on the computer room of the data center to reduce the temperature of the computer room of the data center and prevent the machines deployed in the cabinets 40 in the computer room from overheating, thereby ensuring the normal operation of the machines and avoiding the occurrence of malfunctions.

[0021] In this embodiment, the hot gas bypass valve is located in the second branch in the pump cabinet 20 and is connected to the compressor in the second branch. The hot gas bypass valve is used to increase the load of the compressor, thereby ensuring the normal operation of the compressor even in a low-load scenario in the machine room.

[0022] In this embodiment, the pump cabinet 20 is located between the evaporative condenser 10 and the heat exchange terminal 30, and is used to connect the evaporative condenser 10 and the heat exchange terminal 30 to form a circulation channel; wherein the heat exchange terminal 30 can be a wind wall.

[0023] In this embodiment, the pump cabinet 20 includes a first branch 21 and a second branch 22; wherein, the input end of the first branch 21 is connected to the output end of the evaporative condenser 10, and the output end of the first branch 21 is connected to the input end of the heat exchange end 30; the input end of the second branch 22 is connected to the output end of the heat exchange end 30, and the output end of the second branch 22 is connected to the input end of the evaporative condenser 10.

[0024] In this embodiment, the refrigeration system forms a circulation channel through the evaporative condenser 10 , the first branch 21 in the pump cabinet 20 , the heat exchange terminal 30 and the second branch 22 in the pump cabinet 20 .

[0025] The working principle of the refrigeration system in this embodiment is introduced: first, when the refrigeration system is powered on, the fluorine pump 212 of the first branch 21 in the pump cabinet 20 transports the liquid refrigerant in the liquid storage tank 211 to the heat exchange end 30.

[0026] Then, the heat exchange terminal 30 converts the liquid refrigerant transported by the first branch 21 into a gaseous refrigerant after performing return air heat exchange with the indoor air of the machine room.

[0027] Next, the compressor 221 of the second branch 22 in the pump cabinet 20 transports the gaseous refrigerant after heat exchange with the return air at the heat exchange end to the evaporative condenser 10 through the second branch 22 .

[0028] Next, the evaporative condenser 10 converts the gaseous refrigerant transported by the second branch 22 in the pump cabinet 20 into a liquid refrigerant after phase-changing heat transfer with the spray water.

[0029] Finally, the liquid storage tank 211 and the fluorine pump 212 of the first branch 21 in the pump cabinet 20 transport the liquid refrigerant to the heat exchange terminal 30 through the first branch 21 .

[0030] That is to say, the refrigeration system in this embodiment performs return air heat exchange with the indoor air of the machine room through the liquid refrigerant at the heat exchange terminal 30 to cool the machine room, and returns the gaseous refrigerant converted after the return air heat exchange to the evaporative condenser 10 through the refrigerant circulation channel formed by the evaporative condenser 10, the pump cabinet 20 and the heat exchange terminal 30, so as to perform phase change heat exchange on the gaseous refrigerant and convert it into liquid refrigerant for return air heat exchange with the indoor air of the machine room.

[0031] Furthermore, the heat exchange terminal 30 in this embodiment utilizes the phase change of the refrigerant in the computer room to air-cool the data center, thereby achieving local cooling of the computer room at the end of the refrigeration system, thereby greatly improving the energy efficiency of the refrigeration system.

[0032] Figure 3 is a schematic diagram according to the third embodiment of the present disclosure. Figure 3 As shown in , this embodiment shows a structural schematic diagram of a pump cabinet in a refrigeration system.

[0033] In this embodiment, the pump cabinet 20 is located in a refrigeration system of a data center, and the refrigeration system is used to perform air cooling on a computer room of the data center.

[0034] The pump cabinet 20 in the refrigeration system of this embodiment includes a hot gas bypass valve 222 connected to the compressor 221 in the second branch 22 .

[0035] After the hot gas bypass valve 222 is opened, the hot gas discharged from the exhaust port of the compressor 221 will be bypassed to the intake port through the hot gas bypass valve 222, thereby increasing the load of the compressor 221. Therefore, in the low-load scenario of the computer room, the compressor 221 will not have problems such as surge shutdown due to the lower load, thereby ensuring the normal operation of the compressor 221, and further ensuring that the refrigeration system continues to cool the computer room.

[0036] In this embodiment, the first branch 21 in the pump cabinet 20 includes a liquid storage tank 211 and a fluorine pump (i.e., a refrigerant pump) 212; wherein, the input end of the liquid storage tank 211 (i.e., the input end of the first branch 21) is connected to the output end of the evaporative condenser 10, the output end of the liquid storage tank 211 is connected to the input end of the fluorine pump 212, and the output end of the fluorine pump 212 (i.e., the output end of the first branch 21) is connected to the input end of the heat exchange end 30.

[0037] In this embodiment, the number of the fluorine pumps 212 in the first branch 21 may be two, thereby improving the reliability of the refrigeration system during operation.

[0038] In this embodiment, the second branch 22 in the pump cabinet 20 includes a compressor 221 and a hot gas bypass valve 222; wherein, the input end of the compressor 221 (i.e., the input end of the second branch) is connected to the output end of the heat exchange end 30, and the output end of the compressor 221 (i.e., the output end of the second branch) is connected to the input end of the evaporative condenser 10; wherein, the compressor 221 in this embodiment can be an oil-free compressor.

[0039] In this embodiment, the hot gas bypass valve 222 and the compressor 221 are connected in parallel in the second branch 22; specifically, the input end of the hot gas bypass valve 222 is connected to the output end of the compressor 221, and the output end of the hot gas bypass valve 222 is connected to the input end of the compressor 221.

[0040] In this embodiment, the evaporative condenser 10 is used to convert the gaseous refrigerant output from the second branch 22 in the pump cabinet 20 into a liquid refrigerant after phase change heat exchange with the spray water.

[0041] In this embodiment, the first branch 21 in the pump cabinet 20 is used to transport the liquid refrigerant to the heat exchange end 30 through the first branch 21 .

[0042] Among them, the liquid storage tank 211 in the first branch 21 is used to store the liquid refrigerant after phase change heat of the evaporative condenser 10; the fluorine pump 212 in the first branch 21 is used to transport the liquid refrigerant in the liquid storage tank 211 to the heat exchange end 30 through the first branch 21.

[0043] In this embodiment, the heat exchange terminal 30 is used to convert the liquid refrigerant transported by the first branch 21 into a gaseous refrigerant after performing return air heat exchange with the indoor air of the data center.

[0044] In this embodiment, the compressor 221 of the second branch 22 in the pump cabinet 20 is used to transport the gaseous refrigerant after the return air heat exchange at the heat exchange terminal 30 to the evaporative condenser 10 through the second branch 22, thereby performing a cycle.

[0045] In this embodiment, the refrigerant is a phase-change heat working medium, that is, the liquid refrigerant can be converted into a gaseous refrigerant by absorbing heat, and the gaseous refrigerant can be converted into a liquid refrigerant by releasing heat.

[0046] In this embodiment, after the hot gas bypass valve 222 of the second branch 22 in the pump cabinet 20 is opened, it is used to bypass the high-temperature gas (i.e., the gaseous refrigerant after return air heat exchange) discharged from the output end of the compressor 221 (i.e., the exhaust port of the compressor 221) to the input end of the compressor 221 (i.e., the intake port of the compressor 221) through the pressure difference.

[0047] That is to say, this embodiment additionally sets a hot gas bypass valve in the second branch of the pump cabinet to bypass the high-temperature gas discharged by the compressor through the exhaust port back to the suction port of the compressor, so as to achieve the purpose of artificially increasing the load of the compressor, thereby avoiding surging and shutdown of the compressor when the compressor is running under low-load scenarios in the computer room, ensuring that the compressor can operate stably, thereby improving the stability of the refrigeration system when cooling the computer room.

[0048] In this embodiment, the hot gas bypass valve 222 can change the valve opening according to the change of the load of the compressor 221; for example, when the load of the compressor 221 changes from large to small, the valve opening is increased, and when the load of the compressor 221 changes from small to large, the valve opening is reduced.

[0049] In addition, in the pump cabinet 20 of this embodiment, a controller (not shown) may also be provided. Figure 3 ).

[0050] In this embodiment, the controller is connected to the compressor 221 and the hot gas bypass valve 222 respectively, and is used to obtain the load condition of the compressor 221 on the one hand, and to control the valve opening of the hot gas bypass valve 222 according to the obtained load condition on the other hand.

[0051] like Figure 3 As shown in , in addition to the liquid storage tank 211 , fluorine pump 212 , hot gas bypass valve 222 and compressor 221 described in the above embodiments, it also includes multiple check valves 201 , multiple shut-off valves 202 , multiple filters 203 and multiple electric valves 204 .

[0052] Figure 4 is a schematic diagram according to the fourth embodiment of the present disclosure. Figure 4 As shown in , this embodiment shows a structural schematic diagram of another data center.

[0053] In this embodiment, the refrigeration system of the data center is composed of an outdoor unit located outdoors and a wind wall (i.e., the heat exchange end) located indoors (the air-conditioning room of the computer room); wherein the outdoor unit is composed of an evaporative condenser and a pump cabinet, and the second branch of the pump cabinet of this embodiment includes a hot gas bypass valve.

[0054] In this embodiment, the hot gas bypass valve located in the second branch of the pump cabinet is connected to the compressor. The hot gas bypass valve is used to increase the load of the compressor, thereby ensuring the normal operation of the compressor even in a low-load scenario in the machine room.

[0055] In this embodiment, at least one cabinet in the computer room includes at least one dummy load; specifically, the dummy load in this embodiment is a dummy server composed of an electric heating wire and a fan.

[0056] Since a hot gas bypass valve is added to the second branch of the pump cabinet to increase the load on the compressor, the minimum load that the data center's cooling system can support is reduced. Therefore, in order to solve the low load scenario of the computer room faced by the cooling system before the business machines are mounted on the cabinets (that is, the number of machines deployed in the computer room is relatively small), it is necessary to increase the load of the cooling system.

[0057] This embodiment achieves the purpose of increasing the load of the computer room before the business machines are mounted on the cabinets by deploying dummy loads in the cabinets of the computer room, so that the refrigeration system, especially the compressor in the refrigeration system, will not be unable to operate normally due to the low load.

[0058] In this embodiment, the number of dummy loads to be deployed in the cabinets of the computer room may be determined according to the refrigeration capacity of the refrigeration system and a preset ratio.

[0059] For example, in this embodiment, when the hot gas bypass valve is set in the pump cabinet, the minimum load ratio corresponding to the refrigeration system can be used as a preset ratio, such as 10%, and then the multiplication result between the refrigeration capacity of the refrigeration system and the preset ratio can be used as the number of dummy loads to be deployed in the cabinet. Figure 4 As shown in , this embodiment deploys 8 dummy loads in the computer room to increase the load of the computer room.

[0060] It is understandable that, in this embodiment, when it is determined that a business machine is to be mounted on a cabinet, the dummy load in the cabinet may be removed first, and then the business machine may be mounted on the cabinet, thereby improving the space utilization of the cabinet.

[0061] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A data center, comprising a refrigeration system and a computer room, wherein the refrigeration system comprises an evaporative condenser, a pump cabinet and a heat exchange terminal, and the computer room comprises at least one cabinet; in, The pump cabinet includes a hot gas bypass valve; The input end of the hot gas bypass valve is connected to the output end of the compressor in the pump cabinet, and the output end of the hot gas bypass valve is connected to the input end of the compressor.

2. The data center according to claim 1, wherein: The hot gas bypass valve and the compressor are located in the second branch of the pump cabinet; The input end of the compressor is connected to the output end of the heat exchange end, and the output end of the compressor is connected to the input end of the evaporative condenser.

3. The data center according to claim 1, wherein: The pump cabinet further comprises a first branch, wherein the first branch comprises a liquid storage tank and a fluorine pump; The input end of the liquid storage tank is connected to the output end of the evaporative condenser, the output end of the liquid storage tank is connected to the input end of the fluorine pump, and the output end of the fluorine pump is connected to the input end of the heat exchange end.

4. The data center according to claim 1, wherein: The pump cabinet also includes a controller; The controller is connected to the compressor and the hot gas bypass valve, and is used to obtain the load condition of the compressor and control the valve opening of the hot gas bypass valve according to the load condition.

5. The data center according to claim 1, wherein: The at least one cabinet includes at least one dummy load.

6. The data center according to claim 5, wherein: The dummy load is a dummy server composed of an electric heating wire and a fan.

7. The data center according to claim 5, wherein: The number of the dummy loads is determined according to a refrigeration capacity of the refrigeration system and a preset ratio.

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