Air cooling and evaporative cooling combined liquid cooling energy-saving unit for cooling data center cabinet

Abstract

The utility model relates to the technical field of cooling units, in particular to an air cooling and evaporation cooling combined liquid cooling energy-saving unit for cooling a data center cabinet, which comprises a machine shell, a fan system, an air cooling system, an evaporation cooling system and a medium pipe valve path system. The evaporation cooling system comprises an evaporation cooling pipe bundle and a spraying system, the medium pipe valve path system comprises a medium circulation pipeline and a control valve set, the medium circulation pipeline is connected with the air cooling pipe bundle and the evaporation cooling pipe bundle, and heat exchange switching between air cooling and evaporation cooling is conducted through the control valve set. The system has the advantages of relatively simple system control, stable heat dissipation, energy conservation, water conservation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling units, in particular to an air-cooled, evaporative-cooled and combined liquid-cooled energy-saving unit for cooling data center cabinets, and particularly applied to a device for adjusting the laying width of fiber yarns during the production of filament-wound pipes. Background Technique

[0002] At present, there are two cooling methods for the heat-generating electronic components in the well-known data center cabinets: air cooling and liquid cooling. With the explosive growth of data volume, a large amount of computing power requires a large number of servers to support. However, limited by the construction area of the data center and environmental protection regulations, increasing the power density of a single cabinet has become a solution to reconcile the growing computing power demand and the limited data center capacity. Liquid cooling technology will gradually replace the traditional air cooling mode.

[0003] Liquid cooling is divided into two-phase liquid cooling and single-phase liquid cooling. In two-phase liquid cooling, a phase change occurs during the circulating heat dissipation. The control is relatively complex, the pressure will change during the phase change process, the requirements for the container are high, and the coolant is easily contaminated during use.

[0004] The coolant in single-phase liquid cooling always maintains a liquid state during the circulating heat dissipation process without a phase change. The control is relatively simple and it has good compatibility with components. There are two heat dissipation methods. One is the air cooling method using an air cooler. Due to the large range of changes in the external meteorological conditions, the heat dissipation of the coolant is unstable, and the temperature of the coolant after cooling is relatively high in hot summer, which is not conducive to the heat dissipation of the cabinet, and the initial investment is high. The other method is to use a cooling tower for heat dissipation, adding an intermediate plate heat exchanger. The cooling water absorbs heat through the plate heat exchanger and then its temperature rises. It is transported back to the cooling tower for evaporation heat dissipation and then its temperature drops. The low-temperature cooling water exchanges heat with the coolant through the plate heat exchanger. It consists of two systems: a coolant circulation system and a cooling water circulation system. The power consumption of the system is large. Due to the existence of the heat transfer temperature difference of the plate heat exchanger, the temperature of the coolant entering the cabinet is relatively high. Since the cooling water in the cooling tower dissipates heat by evaporation, cooling water needs to be replenished throughout the year, resulting in a large consumption of water resources.

[0005] To sum up, the current cabinet liquid cooling mode has defects such as complex system control, unstable heat dissipation, high supply temperature of the liquid to the cabinet, high initial investment, large power consumption of the system, and waste of water resources. Content of the Utility Model

[0006] The utility model provides an air-cooled, evaporative-cooled and combined liquid-cooled energy-saving unit for cooling data center cabinets, which can solve the problems pointed out in the background technique.

[0007] An air-cooled, evaporative-cooled combined liquid-cooled energy-saving unit for cooling a data center cabinet, comprising a machine housing and a fan system, further comprising an air-cooling system, an evaporative-cooling system and a medium pipe valve system. The air-cooling system includes air-cooling tube bundles, the evaporative-cooling system includes evaporative-cooling tube bundles and a spraying system, and the medium pipe valve system includes a medium circulation pipeline and a control valve group. The medium circulation pipeline is respectively connected to the air-cooling tube bundles and the evaporative-cooling tube bundles, and the heat exchange switching between air-cooling and evaporative-cooling is carried out through the control valve group.

[0008] Preferably, the medium circulation pipeline includes a main liquid inlet pipe and a main liquid outlet pipe. The main liquid inlet pipe is respectively connected to an air-cooling liquid inlet pipe and an air-cooling liquid outlet pipe. The air-cooling liquid inlet pipe and the air-cooling liquid outlet pipe are respectively connected to the liquid inlet end and the liquid outlet end of the air-cooling tube bundles. The air-cooling liquid outlet pipe is sequentially connected to the main liquid inlet pipe, an evaporative-cooling liquid inlet pipe and the main liquid outlet pipe. The end of the main liquid outlet pipe is connected to the liquid outlet end of the evaporative-cooling tube bundles. A first control valve, a second control valve, a third control valve and a fourth control valve are respectively arranged on the air-cooling liquid inlet pipe, the air-cooling liquid outlet pipe, the evaporative-cooling liquid inlet pipe and the main liquid outlet pipe. The second control valve is located between the connection points of the main liquid inlet pipe with the air-cooling liquid inlet pipe and the air-cooling liquid outlet pipe. The fourth control valve is located between the connection points of the air-cooling liquid outlet pipe with the evaporative-cooling liquid inlet pipe and the main liquid outlet pipe.

[0009] Preferably, air-cooling louvers and evaporative-cooling louvers are respectively arranged on the machine housing corresponding to the air-cooling tube bundles and the evaporative-cooling tube bundles.

[0010] Preferably, the first control valve, the second control valve, the third control valve and the fourth control valve are all electric valves, and the air-cooling louvers and the evaporative-cooling louvers are all electric louvers.

[0011] Preferably, the spraying system includes a spraying water tank, a pipeline, a water pump and a nozzle.

[0012] Preferably, a precooling filler is arranged below the nozzle.

[0013] Beneficial effects: 1. Single-phase liquid cooling is adopted, the coolant has no phase change, the control system is simple, and the operation is stable and reliable;

[0014] 2. Since evaporative-cooling tube bundles are adopted, the ultimate temperature of the coolant after being cooled is the wet-bulb temperature of the air, and the ultimate temperature of the dry cooler (air cooler) for cooling is the dry-bulb temperature of the air. When the outside air temperature is high, the temperature of the coolant delivered to the cabinet can be greatly reduced, the heat exchange temperature difference can be increased, the heat exchange effect can be enhanced, and the power density of a single cabinet can be improved;

[0015] 3. When operating in the evaporative-cooling mode, compared with the dry cooler (air cooler), under the same meteorological conditions and the same liquid outlet temperature, the power consumed by the fan can be greatly reduced;

[0016] 4. Since an evaporative cooling tube bundle is adopted, the coolant can be directly transported to the evaporative cooling tube bundle. Compared with the combination of an open cooling tower and a plate heat exchanger, a liquid circulation system is omitted, the system structure is simple, the liquid circulation pump is halved, and electricity is saved.

[0017] 5. When the outside air temperature reaches the set value and the spray pump stops, when the air cooling mode is adopted, compared with the combination of an open cooling tower and a plate heat exchanger, there is no evaporation of spray water, and water is saved.

[0018] 6. A unit has two cooling modes and is used as a backup for each other, making the operation of the data center cabinet safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present utility model.

[0020] Description of the reference numerals in the drawings:

[0021] The reference numerals in the figure: machine housing 1; fan system 2; air-cooled tube bundle 31; air-cooled louver 32; evaporative-cooled tube bundle 41; spray water tank 421; water pump 422; nozzle 423; evaporative-cooled louver 43; main liquid inlet pipe 51; main liquid outlet pipe 52; air-cooled liquid inlet pipe 53; air-cooled liquid outlet pipe 54; evaporative-cooled liquid inlet pipe 55; first control valve 56; second control valve 57; third control valve 58; fourth control valve 59; precooling filler 6. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will describe in detail a specific embodiment of the present utility model with reference to the drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiment.

[0023] Example As Figure 1 shown, an air-cooled and evaporative-cooled combined liquid-cooled energy-saving unit for cooling a data center cabinet provided by an embodiment of the present utility model includes a machine housing 1 and a fan system 2. The fan system 2 includes a motor, a fan, and a wind cylinder, and is responsible for introducing the outside air flow of the unit into the air-cooled tube bundle 31 and the evaporative-cooled tube bundle 41 and discharging it outside the unit.

[0024] It also includes an air-cooled system, an evaporative-cooled system, and a medium pipe valve system. The air-cooled system includes an air-cooled tube bundle 31, the evaporative-cooled system includes an evaporative-cooled tube bundle 41 and a spray system, and the medium pipe valve system includes a medium circulation pipeline and a control valve group. The medium circulation pipeline is respectively connected to the air-cooled tube bundle 31 and the evaporative-cooled tube bundle 41, and the heat exchange switching between air cooling and evaporative cooling is carried out through the control valve group.

[0025] Specifically, the medium circulation pipeline includes a main liquid inlet pipe 51 and a main liquid outlet pipe 52. The main liquid inlet pipe 51 is respectively connected to an air-cooled liquid inlet pipe 53 and an air-cooled liquid outlet pipe 54. The air-cooled liquid inlet pipe 53 and the air-cooled liquid outlet pipe 54 are respectively connected to the liquid inlet end and the liquid outlet end of the air-cooled tube bundle 31. The air-cooled liquid outlet pipe 54 is sequentially connected to the main liquid inlet pipe 51, an evaporation-cooled liquid inlet pipe 55 and the main liquid outlet pipe 52. The end of the main liquid outlet pipe 52 is connected to the liquid outlet end of the evaporation-cooled tube bundle 41. A first control valve 56, a second control valve 57, a third control valve 58 and a fourth control valve 59 are respectively arranged on the air-cooled liquid inlet pipe 53, the air-cooled liquid outlet pipe 54, the evaporation-cooled liquid inlet pipe 55 and the main liquid outlet pipe 52. That is, the control valve group includes the above control valves. The second control valve 57 is located between the connection points of the main liquid inlet pipe 51 with the air-cooled liquid inlet pipe 53 and the air-cooled liquid outlet pipe 54. The fourth control valve 59 is located between the connection points of the air-cooled liquid outlet pipe 54 with the evaporation-cooled liquid inlet pipe 55 and the main liquid outlet pipe 52.

[0026] Specifically, air-cooled louvers 32 and evaporation-cooled louvers 43 are respectively arranged on the machine housing 1 corresponding to the air-cooled tube bundle 31 and the evaporation-cooled tube bundle 41. The first control valve 56, the second control valve 57, the third control valve 58 and the fourth control valve 59 are all electric valves. The air-cooled louvers 32 and the evaporation-cooled louvers 43 are all electric louvers.

[0027] Specifically, the spray system includes a spray water tank 421, pipelines, a water pump 422 and spray nozzles 423.

[0028] In some embodiments, a precooling filler 6 is arranged below the spray nozzles 423 to reduce the spray water temperature, facilitate heat transfer of the evaporation-cooled tube bundle 41, and prevent scale formation on the surface of the tube bundle.

[0029] Working principle or usage method of the present utility model:

[0030] Evaporation-cooled mode: The air-cooled louvers 32 are closed, the evaporation-cooled louvers 43 are opened, the water pump 422 is started, the first control valve 56 and the fourth control valve 59 are closed, the second control valve 57 and the third control valve 58 are opened, the fan is started, the coolant enters the evaporation-cooled tube bundle 41, and the air flow passes through the evaporation-cooled tube bundle 41 and is discharged outside the unit.

[0031] Air-cooling mode: The air-cooled louvers 32 are opened, the evaporation-cooled louvers 43 are closed, the water pump 422 is stopped, the first control valve 56 and the fourth control valve 59 are opened, the second control valve 57 and the third control valve 58 are closed, the fan is started, the coolant enters the air-cooled tube bundle 31, and the air flow passes through the air-cooled tube bundle 31 and is discharged outside the unit.

[0032] Only several specific embodiments of the present utility model are disclosed above. However, the embodiments of the present utility model are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An air cooling, evaporative cooling and liquid cooling energy-saving unit for cooling a data center cabinet, comprising a housing (1) and a fan system (2), characterized in that: It also includes an air cooling system, an evaporative cooling system, and a medium pipe valve system, wherein the air cooling system includes an air cooling tube bundle (31), the evaporative cooling system includes an evaporative cooling tube bundle (41) and a spray system, and the medium pipe valve system includes a medium circulation pipeline and a control valve group, wherein the medium circulation pipeline is respectively connected to the air cooling tube bundle (31) and the evaporative cooling tube bundle (41), and heat exchange switching between air cooling and evaporative cooling is performed through the control valve group.

2. According to claim 1, an air cooling, evaporative cooling and liquid cooling energy-saving unit for cooling a data center cabinet is characterized in that: The medium circulation pipeline comprises a main liquid inlet pipe (51) and a main liquid outlet pipe (52); the main liquid inlet pipe (51) is connected to an air cooling liquid inlet pipe (53) and an air cooling liquid outlet pipe (54) respectively; the air cooling liquid inlet pipe (53) and the air cooling liquid outlet pipe (54) are connected to a liquid inlet end and a liquid outlet end of the air cooling tube bundle (31) respectively; the air cooling liquid outlet pipe (54) is connected to the main liquid inlet pipe (51), the evaporative cooling liquid inlet pipe (55) and the main liquid outlet pipe (52) in sequence; the end of the main liquid outlet pipe (52) is connected to a liquid outlet of the evaporative cooling tube bundle (41). On the end, the air-cooling liquid inlet pipe (53), the air-cooling liquid outlet pipe (54), the evaporative cooling liquid inlet pipe (55) and the main liquid outlet pipe (52) are respectively provided with a first control valve (56), a second control valve (57), a third control valve (58) and a fourth control valve (59); the second control valve (57) is located between the connection points of the main liquid inlet pipe (51) and the air-cooling liquid inlet pipe (53) and the air-cooling liquid outlet pipe (54); and the fourth control valve (59) is located between the connection points of the air-cooling liquid outlet pipe (54) and the evaporative cooling liquid inlet pipe (55) and the main liquid outlet pipe (52).

3. The energy-saving unit of air cooling, evaporative cooling and liquid cooling for cooling cabinets in a data center according to claim 2, characterized in that: The casings (1) corresponding to the air cooling tube bundle (31) and the evaporative cooling tube bundle (41) are respectively provided with air cooling louvers (32) and evaporative cooling louvers (43).

4. The air cooling, evaporative cooling and liquid cooling energy-saving unit for cooling cabinets in a data center according to claim 3 is characterized in that: The first control valve (56), the second control valve (57), the third control valve (58) and the fourth control valve (59) are all electric valves, and the air cooling louver (32) and the evaporative cooling louver (43) are all electric louvers.

5. An air cooling, evaporative cooling and liquid cooling energy-saving unit for cooling a data center cabinet according to any one of claims 1 to 4, characterized in that: The spray system comprises a spray water tank (421), pipelines, a water pump (422), and a spray head (423).

6. The air cooling, evaporative cooling and liquid cooling energy-saving unit for cooling cabinets in a data center according to claim 5, characterized in that: A pre-cooling filler (6) is provided below the spray head (423).

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