CN107466184A - The air-conditioning system that data center is combined with evaporation cooling with the air-supply of station environment - Google Patents

Abstract

The air-conditioning system that data center disclosed by the invention is combined with evaporation cooling with the air-supply of station environment, including the station blowing unit in data center, also exhaust duct and environment ajutage, environment ajutage is set to pass data center and be connected with vaporizing type air conditioner respectively at the top of data center；Vaporizing type air conditioner includes housing, and one group of fresh wind port is symmetrically arranged with housing, filter, evaporation cooling unit and pressure fan are disposed with along air-flow direction in each fresh wind port.The air-conditioning system of the present invention carries out cooling, while the air in humidifying chamber to the overall situation in data center by using vaporizing type air conditioner, keeps indoor comfort degree；It can be good at eliminating the hot localised points formed in rack using station blowing unit, reduce the formation of frame hot localised points, stabilize the temperature of interior of equipment cabinet, server is had good practical value with stable operation.

Description

Air conditioning system combining evaporative cooling and workstation-environmental air supply for data centers

technical field

The invention belongs to the technical field of air-conditioning equipment, and in particular relates to an air-conditioning system combining evaporative cooling and station-environment air supply for data centers.

Background technique

In recent years, with the rapid development of the data center, especially the large-scale use of high heat density equipment in the data center, due to the high heat generation of the cabinet servers in the data center and the basic 8760h operation throughout the year, for the computer room that does not use fresh air, Cooling is required throughout the year, which puts enormous pressure on the cooling of the computer room and the energy consumption of the air conditioner. Because local hotspots are easily formed in the high-density data computer room cabinets, the servers cannot operate normally. The traditional air conditioning method uses the entire computer room as the adjustment object, and the system consumes a lot of energy.

Contents of the invention

The purpose of the present invention is to provide an air-conditioning system combining evaporative cooling for data centers and station-environmental air supply, which solves the problems that the existing data center air-conditioning systems consume large amounts of energy and cannot dissipate heat in the cabinets in time.

The technical solution adopted in the present invention is that the data center uses an air conditioning system combining evaporative cooling and station-environment air supply, including station air supply units located in the data center, and exhaust pipes and environment air supply units are also arranged on the top of the data center. The air duct, the environmental air supply duct goes out of the data center and is connected to the evaporative air conditioner;

The evaporative air conditioner includes a housing on which a group of fresh air outlets are symmetrically arranged, and a filter, an evaporative cooling unit, and a blower are sequentially arranged in each fresh air outlet along the direction of air flow.

The present invention is also characterized in that,

Each evaporative cooling unit includes packing, and the bottom of each packing is provided with a water collecting tank, and the water collecting tank is connected with a water supply pipe, and the water supply pipe is connected to the water distributor located on the top of the packing; the water supply pipe is also provided with a water filter and circulating water pump.

The water distributor includes a water distribution pipe connected with the water supply pipe, and a plurality of nozzles are evenly distributed on the water distribution pipe.

A plurality of air supply ports are evenly distributed on the environment air supply pipe connected with the blower.

The exhaust duct is connected to the exhaust outlet b on the side wall of the data center, and several exhaust outlets c are evenly distributed on the exhaust duct, and an exhaust fan b is also arranged in the exhaust outlet b.

The station air supply unit includes a fresh air channel and a return air channel;

The fresh air channel includes an air inlet and an air outlet a on the side wall of the data center, and a plate heat exchanger is arranged between the air inlet and the air outlet a;

The return air channel includes the return air outlet located in the data center. In the return air outlet, there are plate heat exchangers, cooling coils and station air supply pipes arranged in sequence according to the air flow direction. Several air supply branch pipes are evenly distributed on the station air supply pipes. , each air supply branch pipe is connected to the cabinet.

Air valves are arranged on the air supply pipes of each station.

An exhaust fan a is arranged in the air exhaust port a.

A return air fan is arranged in the air return port.

The beneficial effects of the air conditioning system of the present invention are:

a) The cold air produced by the station air supply unit of the air conditioning system of the present invention is sent to the cabinet through the air supply branch pipe, and a relatively low temperature is maintained in the cabinet, which satisfies the operating requirements of the server well, while in the large environment of the machine room , using another set of environmental air supply system, the fresh air taken by the evaporative air conditioner can keep the environment within an acceptable range for the human body, which not only ensures the stable operation of the server, but also takes into account the comfort requirements of the management personnel; at the same time, it adopts The evaporative air conditioner can not only meet the temperature requirements in non-critical areas in the computer room, but also humidify the entire computer room, so that the temperature and humidity field in the computer room can be stabilized within a certain range;

b) In the air-conditioning system of the present invention, air supply branch pipes are arranged on the cabinets, and air valves are arranged in the air supply branch pipes to adjust the air volume entering each cabinet according to the calorific value of the cabinets, thereby reducing the formation of local hot spots on the racks and ensuring cold air supply It is directly sent into the cabinet, and the hot and cold air are not mixed, which stabilizes the temperature inside the cabinet and enables the server to run stably;

c) The air-conditioning system of the present invention sends cold air directly into the cabinet, the air supply distance is short, and the loss of cooling capacity is small. Compared with the traditional air-conditioning method that uses the entire data center as the adjustment object, the adjustment area is localized and the temperature of the cabinet is lowered faster ; The air conditioner in the non-critical area of the data center adopts another air supply system to save energy;

d) The air conditioning system of the present invention adopts a plate heat exchanger. When the outdoor air state is within a suitable range, the natural cold source is fully utilized to indirectly exchange the return air in the data center with the outdoor fresh air; , When the cooling is insufficient, the cooling coil is used to realize free cooling for most of the year, which greatly reduces the energy consumption of the entire air conditioning system.

Description of drawings

Fig. 1 is a structural schematic diagram of an air conditioning system combining evaporative cooling and workstation-environment air supply for a data center according to the present invention.

In the figure, 1. Data center, 2. Air supply branch pipe, 3. Cabinet, 4. Return air outlet, 5. Return air fan, 6. Cooling coil, 7. Plate heat exchanger, 8. Exhaust fan a, 9. Exhaust outlet a, 10. Air inlet, 11. Exhaust outlet b, 12. Exhaust fan b, 13. Exhaust pipe, 14. Exhaust outlet c, 15. Air supply outlet, 16. Environmental air supply pipe, 17. Fresh air outlet, 18. Filter, 19. Water collection tank, 20. Water filter, 21. Blower fan, 22. Circulating water pump, 23. Water supply pipe, 24. Water distribution pipe, 25. Packing, 26. Air valve, 27. Work Bit air supply pipe, 28. evaporative air conditioner, 29. nozzle.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The air-conditioning system combined with evaporative cooling and station-environment air supply for the data center of the present invention, as shown in FIG. 1 , includes a station air supply unit located in the data center 1, and an exhaust pipe 13 and The environmental air supply pipe 16, the environmental air supply pipe 16 passes through the data center 1 and is connected to an evaporative air conditioner 28; the evaporative air conditioner 28 includes a shell, and a group of fresh air outlets 17 are symmetrically arranged on the shell, and each fresh air outlet 17 A filter 18, an evaporative cooling unit, and a blower 21 are sequentially arranged inside along the air flow direction.

Each evaporative cooling unit includes packing 25, and the bottom of each packing 25 is provided with a water collecting tank 19, and the water collecting tank 19 is connected with a water supply pipe 23, and the water supply pipe 23 is connected to the water distributor located at the top of the packing 25; Also be provided with water filter 20 and circulating water pump 22 on 23; The circulating water pump 22 provides power to draw the circulating water in the water collecting tank 19, and then passes through the water filter 20 to purify and filter, the water supply pipe 23, the water distribution pipe 24 and the nozzle 29 to spray out, and the circulating water exchanges heat with the fresh air in the filler 25 Afterwards, fall back to water collecting tank 19 insides.

A number of air supply outlets 15 are evenly distributed on the environmental air supply pipe 16 connected to the air blower 21. The environmental air supply pipe 16 sends the fresh air processed by the evaporative air conditioner 28 into the data center 1 through the air supply outlet 15, and supplies the data center 1 The internal environment cools down.

The exhaust pipe 13 is connected to the air outlet b11 on the side wall of the data center 1, and several air outlets c14 are evenly distributed on the exhaust pipe 13, and an exhaust fan b12 is also arranged in the air outlet b11. The air outlet c14 discharges the air in the data center 1 through the exhaust pipe 13 , and the exhaust fan b12 accelerates the flow of air in the exhaust pipe 13 .

The station air supply unit includes a fresh air channel and a return air channel;

The fresh air channel includes an air inlet 10 and an air outlet a9 located on the side wall of the data center 1, and a plate heat exchanger 7 is arranged between the air inlet 10 and the air outlet a9, and outdoor fresh air enters the plate heat exchanger 7 through the air inlet 10 Inside, after exchanging heat with the air in the return air channel, it is discharged from the air exhaust port a9, and an exhaust fan a8 is arranged in the air exhaust port a9, and the exhaust fan a8 accelerates the flow rate of the air in the air exhaust port a9;

The return air channel includes the return air outlet 4 located in the data center 1, and the plate heat exchanger 7, the cooling coil 6 and the station air supply pipe 27 are arranged in the return air outlet 4 in sequence according to the air flow direction, and the station air supply pipe 27 is A number of air supply branch pipes 2 are evenly distributed, and each air supply branch pipe 2 is connected to the cabinet 3 . The return air in the data center 1 enters the inside of the plate heat exchanger 7 through the return air outlet 4, exchanges heat with the fresh air channel, and then is processed by the cooling coil 6, and the cooled indoor return air passes through the station air supply pipe 27 and the air supply branch pipe 2. Cool down the designated cabinet 3.

Each station air supply pipe 27 is provided with a damper 26. Whether the use of the cabinet 3 is used or not, the damper 26 adjusts the switch of the station air supply pipe 27. One is to quickly cool down in the cabinet 3, and the other is to save energy. energy and avoid waste.

A return air fan 5 is arranged in the return air port 4, and the return air fan 5 accelerates the flow rate of the air in the return air port 4 room.

The working process of the air conditioning system of the present invention is as follows:

When the station air supply unit starts working, the return air fan 5 provides power, and the return air in the data center 1 enters the plate heat exchanger 7 to exchange heat indirectly with the fresh air channel, and then enters the air supply branch pipe 2 through the station air supply pipe 27 , open the air valve 26, the cold air directly enters the cabinet 3 to provide cooling capacity for heat exchange, and then discharges into the data center 1; the air that absorbs the heat in the cabinet 3 enters the plate heat exchanger 7 again under the action of the return air fan 5 Heat exchange, when it is in extreme weather in summer, only the return air cooled by the plate heat exchanger 7 cannot meet the temperature requirements. At this time, the return air after heat exchange is cooled again through the cooling coil 6, and finally the return air passes through the working The air supply pipe 27 and the air supply branch pipe 2 are sent into the cabinet 3, and the cycle is repeated. At the same time, after the outdoor fresh air is cooled and humidified by the evaporative air conditioner 28, it is sent into the data center 1 through the environmental air supply pipe 16 and the air supply port 15, to provide cooling capacity for non-critical or non-process areas, and the hot air after heat absorption Through the exhaust pipe 13, under the action of the exhaust fan 12, it is exhausted from the exhaust port b11 to the outside.

The circulating water pump 22 provides power to draw out the circulating water in the water collection tank 19, and then pass through the water filter 20 to purify and filter, the water supply pipe 23, the water distribution pipe 24 and the nozzle 29 to spray out, and the circulating water is evenly sprayed on the filler 25 to form A very thin water film, when the outdoor air contacts with the water film, direct evaporative cooling occurs, the air is humidified and cooled, and then sent into the data center 1 by the environmental air supply pipe 16, and the rest of the non-evaporated water falls back into the water collection tank 19, Water is delivered to the water distributor by the water supply pipe 23 by the circulating water pump 22 again, and the cycle is repeated.

The air conditioning system of the present invention cools the large environment in the data center 1 by using the evaporative air conditioner 28, and at the same time humidifies the air in the room to maintain indoor comfort; The local hot spots reduce the formation of local hot spots in the rack, stabilize the temperature inside the cabinet 3, and enable the server to run stably, which has good practical value.

Claims (9)

1. An air conditioning system combining evaporative cooling and station-environment air supply for data centers, characterized in that it includes a station air supply unit located in the data center (1), and the top of the data center (1) is also equipped with row The air duct (13) and the environmental air supply duct (16), the environmental air supply duct (16) passes through the data center (1) and is connected with an evaporative air conditioner (28); The evaporative air conditioner (28) includes a housing on which a group of fresh air outlets (17) are symmetrically arranged, and each new air outlet (17) is sequentially provided with a filter (18), an evaporator Cooling unit and blower (21). 2. The data center air-conditioning system combining evaporative cooling and station-environmental air supply according to claim 1, wherein each of the evaporative cooling units includes packing (25), and each packing (25 ) are provided with a water collection box (19) at the bottom, and the water collection box (19) is connected with a water supply pipe (23), and the water supply pipe (23) is connected to the water distributor located at the top of the filler (25); the water supply pipe (23) is also provided with water filter (20) and circulating water pump (22). 3. The data center air-conditioning system combined with evaporative cooling and station-environment air supply according to claim 2, characterized in that the water distributor includes a water distribution pipe (24) connected to the water supply pipe (23) ), some sprinklers (29) are evenly distributed on the water distribution pipe (24). 4. The air-conditioning system combined with evaporative cooling and station-environmental air supply for data center according to claim 1, characterized in that, the ambient air supply pipe (16) connected to the blower (21) is uniformly Several air supply ports (15) are distributed. 5. The data center air-conditioning system combined with evaporative cooling and station-environmental air supply according to claim 1, characterized in that, the exhaust pipe (13) and the exhaust pipe on the side wall of the data center (1) The air outlets b (11) are connected to each other, and some air outlets c (14) are evenly distributed on the air exhaust pipe (13), and an exhaust fan b (12) is also arranged in the air outlet b (11). 6. The data center air-conditioning system combining evaporative cooling and station-environment air supply according to claim 1, wherein the station air supply unit includes a fresh air channel and a return air channel; The fresh air channel includes an air inlet (10) and an air outlet a (9) on the side wall of the data center (1), and a plate heat exchange is arranged between the air inlet (10) and the air outlet a (9). device (7); The return air passage includes a return air outlet (4) located in the data center (1), and a plate heat exchanger (7), a cooling coil (6) and a working Position air supply pipe (27), evenly distributed with some air supply branch pipes (2) on the station air supply pipe (27), each air supply branch pipe (2) is all connected to cabinet (3). 7. The data center air-conditioning system combining evaporative cooling and station-environmental air supply according to claim 6, characterized in that each station air supply pipe (27) is provided with a damper ( 26). 8. The data center air conditioning system combining evaporative cooling and workstation-environment air supply according to claim 6, characterized in that an exhaust fan a (8) is arranged in the air exhaust port a (9). 9. The air-conditioning system combining evaporative cooling for data centers with workstation-environment air supply according to claim 6, characterized in that a return air fan (5) is arranged in the return air outlet (4).