JP6339455B2 - Air conditioning system for information processing equipment room - Google Patents

Description

  The present invention relates to an air conditioning system for an information processing equipment room that cools a server mounted in a server rack of the information processing equipment room and prevents a server failure.

  In data centers, the operation of multiple servers mounted in a server rack installed in an air-conditioning room causes the servers to self-heat, causing the server temperature to rise and cause server failure. The server needs to be cooled. A data center air conditioning system that cools those servers in a data center includes a plurality of server racks installed in a data center air conditioning room and extending in the front-rear direction, and a cold extending in the front-rear direction between adjacent server racks. The aisle is located between the adjacent server racks and on the opposite side of the cold aisle across the server rack. The hot aisle extends in one direction in parallel with the cold aisle, and the air conditioner is installed in the air conditioning room of the data center. There are known systems having a machine.

  In this air conditioning system, the cold air cooled to a predetermined temperature by the air conditioner is supplied from the air conditioner to the under floor space of the air conditioning room, and the cold air flows into the cold aisle through the under floor space, and the cold air flows from the cold aisle. The server mounted in the server rack is cooled while flowing through the server rack. The cool air that cools the server changes to hot air that absorbs the heat from the server, and that hot air flows into the hot aisle from the server rack, and then flows into the ceiling space of the air conditioning room from the hot aisle. Return to the machine. A part of the warm air is released to the outside air, and the remaining warm air flows into the air conditioner together with the outside air. The underfloor space stores a number of obstacles such as a plurality of cables extending from the servers accommodated in the server rack, a plurality of cables extending from other network devices, and a connecting jig for connecting the cables. ing.

  An air conditioning system is disclosed in which a plurality of local cooling devices arranged in the front-rear direction are installed in the upper part of the cold aisle ceiling in order to reliably cool the servers mounted on the server rack (see Patent Document 1). In this air conditioning system, the cold air supplied from the air conditioner to the underfloor space flows from the lower side of the server rack to the upper side to cool the server mounted on the rack, and the hot air that has absorbed the heat of the server is And flows into the local cooling device and into the air conditioner. The hot air flowing into the local cooling device is cooled by the local cooling device to turn into cold air, and the cold air flows into the rack from the side of the server rack while flowing from the upper side to the lower side of the cold aisle. Cool the installed server.

JP 2009-133617 A

  In those air conditioning systems already described in the background art, even when servers are not mounted on all server racks, cold air is supplied to the underfloor space, and not only the server racks on which the servers are mounted, Since the server rack is also supplied with air to the server rack that is not mounted, cool air that is not used for cooling the server is supplied from the air conditioner, and excess cool air blowing energy that generates unnecessary cold air is consumed in the air conditioner. Energy saving cannot be achieved.

  In the air conditioning system disclosed in Patent Document 1, the entire cold aisle can be uniformly cooled from above, but a plurality of local cooling devices are installed separately from the air conditioner, and all of these local cooling devices are operated. Since it is necessary, a large amount of energy is consumed when the server is cooled, and energy saving in the system cannot be achieved.

  An object of the present invention is to reliably cool a server mounted in a server rack with the minimum necessary amount of cold air blowing energy when no server is mounted in all the server racks, thereby achieving energy saving. The object is to provide an air conditioning system for an information processing equipment room. Another object of the present invention is to provide an air conditioning system for an information processing equipment room capable of supplying cool air having an air volume according to the mounting rate of servers with respect to a server rack.

  The premise of the present invention for solving the above-mentioned problem is that the server racks are arranged in one direction and are located between adjacent server racks and a plurality of server racks that extend in one direction and are spaced apart in a crossing direction that intersects one direction. A cold aisle that extends between the adjacent server racks and on the opposite side of the cold aisle across the server rack. The hot aisle extends in one direction in parallel with the cold aisle, and cold air of a predetermined temperature is applied to the cold aisle. An air conditioner for supplying air, and cool air supplied from the air conditioner flows into the cold aisle from under the floor space and flows from the cold aisle to the server rack to cool the server mounted in the server rack. It is an air conditioning system for equipment rooms.

  As a feature of the present invention based on the above premise, the air conditioner is arranged above the server rack, and the central area of the cold aisle is located in the middle distance to the air conditioner from the rear area of the cold aisle close to the air conditioner. And a blower unit that supplies cold air in one direction toward the front area of the cold aisle far away from the air conditioner. The first air supply means for supplying cold air from the blower unit toward the cold aisle where the server rack on which the server is mounted is located without lowering air from the air conditioner to the underfloor space when the set rate is lower than the set rate. If the server mounting rate in the server rack exceeds the set rate, cool air is supplied from the blowing unit toward the cold aisle. It is to implement the second air supply means for supply of cold air to the underfloor space from the air conditioner.

  As an example of the present invention, in an air conditioning system for an information processing equipment room, after a server is mounted at an arbitrary position of a server rack located in a cold aisle, the first air supply means is implemented, and the server rack is operated from an arbitrary position of the server rack. When the server is mounted in any one of the front area, the central area, and the rear area of the cold aisle and the mounting rate exceeds the set rate, the second air supply means is implemented.

  As another example of the present invention, the air conditioner includes a first damper that adjusts the amount of cool air supplied to the blowout unit, and a second damper that adjusts the amount of cool air supplied to the underfloor space, In the first air supply means, by adjusting the opening degree of the first damper, the air volume of the cold air supplied from the blowing unit is changed according to the mounting rate of the server in the server rack, and in the second air supply means, By adjusting the opening degree of the first and second dampers, the air volume of the cool air supplied from the blow-out unit and the air volume of the cool air supplied to the underfloor space are changed according to the mounting ratio of the server to the server rack.

  As another example of the present invention, the air conditioner has at least one blower that sends cold air to the underfloor space and the blowing unit, and the first air supply means adjusts the air volume of the blower to the server rack. The air volume of the cool air supplied from the blow-out unit is changed according to the mounting rate of the server, and the second air supply means adjusts the air volume of the blower so that the blow-out unit is adjusted according to the server mounting rate in the server rack. The amount of cool air supplied from the air and the amount of cool air supplied to the underfloor space are changed.

  As another example of the present invention, the air conditioning system for the information processing equipment room includes a first temperature sensor that is installed in a server rack extending to the cold aisle and measures the first temperature of the cold aisle. When the first temperature measured by the first temperature sensor is compared with a preset temperature, and the first temperature exceeds the preset temperature, the air volume of the blower is greater than when the first temperature is within the preset temperature range. When the first temperature falls below the set temperature, the air volume increased when the first temperature exceeds the set temperature is maintained while maintaining the increased air volume. When the first air temperature exceeds the set temperature, the second air supply means increases the air volume of the blower compared to when the first temperature is within the set temperature range. Blowout unit Increase at least one of the amount of cool air supplied and the amount of cool air supplied to the underfloor space. If the first temperature falls below the set temperature, increase it if the first temperature exceeds the set temperature. The cool air of the maintained air volume is supplied from the blow-out unit and the under-floor space while maintaining the air volume.

  As another example of the present invention, the blowing unit includes an air inlet, first to n-th air outlets that are arranged in the vertical direction and open in one direction, and the air inlet toward the air outlet. And an air conditioning system for an information processing equipment room, the first to nth air flow paths extending in the air flow paths, and first to nth air speed adjusting mechanisms that adjust the wind speed of the cold air that is installed in these air flow paths and passes through the air flow paths. Then, the speed of the cool air supplied from the 1st to n-th air outlets is adjusted using these wind speed adjusting mechanisms, and the cool air supplied from these outlets reaches the target location of the cold aisle.

  As another example of the present invention, in the air conditioning system for the information processing equipment room, cold air flows from the outlet located in the upper stage of the first to nth air outlets in the front area of the cold aisle at a long distance from the position of the outlet unit. To the cold aisle at an intermediate distance from the position of the blowout unit, and cool air is fed from the blowout outlet located in the middle of the first to nth air blowout openings to the central area and close to the position of the blowout unit. Cold air is supplied to the rear area of the cold aisle from the air outlet located in the lower stage of the first to nth air outlets.

  As another example of the present invention, the air conditioning system for the information processing equipment room includes an air guide mechanism installed at a predetermined location on the ceiling of the cold aisle, and the air conditioning system for the information processing equipment room uses the air guide mechanism. Then, cool air supplied from the blowout unit is guided to the target location of the cold aisle.

  As another example of the present invention, in the air conditioning system for the information processing equipment room, the first to nth air guide mechanisms that guide the cool air to the target locations in the rear area, the central area, and the front area of the cold aisle are arranged in one direction. In the state, it is installed on the ceiling of the cold aisle, and at least one of the first to nth air guide mechanisms is turned on to guide the cool air to the target location.

  As another example of the present invention, the first to nth wind guide mechanisms are formed of a wind direction plate extending in the vertical direction and a support member extending in the vertical direction and slidably supporting the wind direction plate, and information In the processing equipment room air conditioning system, the wind direction plate hangs down from the ceiling in the ON state of the wind guide function of the first to nth wind guide mechanisms.

  As another example of the present invention, the cold air supplied from the blowing unit is directed to the target location of the cold aisle along the cold aisle ceiling by the Coanda effect, and the cold aisle and the hot aisle are partitioned by the Coanda effect. Go along the wall to the target location of the cold aisle.

  As another example of the present invention, the setting rate is set in a range of 45 to 55% when the server is mounted in all of the server racks as 100%. In the information processing equipment room air conditioning system, The first air supply means is implemented until the mounting rate is from 1% to 45 to 55%, and the second air supply means is implemented until the mounting rate is from 45 to 55% to 100%. .

  According to the air conditioning system for the information processing equipment room according to the present invention, when the server mounting rate in the server rack is lower than the preset setting rate, the server can be connected without supplying cool air from the air conditioner to the underfloor space. Cool air is supplied from the blow-out unit toward the cold aisle where the mounted server rack is located, so that the area around the server mounted in the server rack can be selectively cooled, and the cool air used for cooling the server is minimized. Can be limited. In the air conditioning system for information processing equipment, cold air is supplied only to the cold aisle where the server rack on which the server is mounted using the blowout unit is located. The air conditioning means of the space is not used, and the consumption of the cold air blowing energy is small in the air conditioner when the server is cooled, and energy saving in the air conditioning system can be achieved. When the server mounting rate in the server rack exceeds the set rate, the information processing equipment room air conditioning system supplies air from the blowout unit to the cold aisle where the server rack on which the server is mounted is located. Since the cool air is supplied from the machine to the underfloor space, the mounting rate exceeds the set rate, and when a predetermined number of servers are operating, all of those servers can be cooled evenly, and the failure due to the temperature rise of the operating servers Can be prevented.

  After the server is mounted at any location on the server rack located in the cold aisle, the first air supply means is implemented, and from any location on the server rack to the front area, the central area, or the rear area of the cold aisle. When the server is installed and the mounting rate exceeds the set rate, the air conditioning system for the information processing equipment room that implements the second air supply means is the rear area of the cold aisle near the air conditioner and the middle area of the middle distance. Even if the server is mounted from any location on the server rack located in the far front area, cold air is supplied from the blowing unit toward the cold aisle at any location on the server rack where the server is mounted. By selectively cooling the periphery of the server mounted on the server rack, the cool air used for cooling the server can be minimized. The air conditioning system for the information processing equipment room is a blowout unit when a server is mounted from any part of the server rack to the front area, the central area, or the rear area of the cold aisle and the mounting rate exceeds the set rate. Since the cool air is supplied from the air conditioner to the space under the floor while supplying cool air toward the cold aisle where the server rack on which the server is mounted is located, the mounting rate exceeded the set rate, and a predetermined number of servers were operated. In some cases, all of these servers can be cooled evenly, and failure due to temperature rise of the servers in operation can be prevented.

  A first damper that adjusts the amount of cool air supplied to the blow-out unit; and a second damper that adjusts the amount of cold air supplied to the underfloor space. By adjusting, by changing the air volume of the cool air supplied from the blowing unit according to the mounting rate of the server to the server rack, by adjusting the opening of the first and second damper in the second air supply means, An air conditioning system for an information processing equipment room that changes the amount of cool air supplied from the blow-out unit and the amount of cool air supplied to the underfloor space in accordance with the mounting rate of the server in the server rack is the server in the first air supply means. By changing the air volume of the cool air supplied from the blow-out unit while adjusting the opening of the first damper according to the mounting rate, the air volume of the cold air supplied from the blow-out unit when the mounting rate is low, As the mounting rate increases Thus it is possible to increase the air volume of the cold air to supply air from the blowout unit, it is possible to cool the server implemented in the server rack by using the required minimum of the cold air in the first air supply means. The air conditioning system for the information processing equipment room supplies the amount of cold air supplied from the blowout unit and the underfloor space while adjusting the opening degree of the first and second dampers according to the mounting rate of the server in the second air supply means. By changing the amount of cool air to be aired, even if the mounting rate exceeds the set rate, the amount of cool air supplied from the blow-out unit when the mounting rate is low and the amount of cool air supplied to the underfloor space are reduced. As the mounting rate increases, the amount of cool air supplied from the blow-out unit and the amount of cool air supplied to the underfloor space can be increased, and the server rack using the minimum necessary amount of cold air in the second air supply means Servers implemented in can be cooled.

  It has at least one blower that sends cold air to the underfloor space and the blowout unit, and the air supply from the blowout unit is adjusted according to the mounting rate of the server in the server rack by adjusting the air volume of the blower in the first air supply means. By changing the air volume of the cool air to be adjusted and adjusting the air volume of the blower in the second air supply means, the air volume of the cool air supplied from the blow-out unit and the underfloor space are supplied according to the mounting rate of the server in the server rack. The air conditioning system for the information processing equipment room that changes the air volume of the cool air changes the air volume of the cool air supplied from the blow-out unit while adjusting the air volume of the blower according to the mounting rate of the server in the first air supply means. The amount of cool air supplied from the blowing unit when the mounting rate is low can be reduced, and the amount of cool air supplied from the blowing unit can be increased as the mounting rate increases. It is possible to cool the server implemented in the server rack by using the required minimum cold in the gas section. The air conditioning system for the information processing equipment room adjusts the air volume of the blower in accordance with the mounting rate of the server in the second air supply means, and the air volume of the cool air supplied from the blowing unit and the air volume of the cold air supplied to the underfloor space This reduces the amount of cool air supplied from the blow-out unit and the amount of cool air supplied to the underfloor space when the mounting rate is low, even if the mounting rate exceeds the set rate, thereby increasing the mounting rate. Accordingly, it is possible to increase the amount of cool air supplied from the blowout unit and the amount of cool air supplied to the underfloor space, and the server mounted in the server rack using the minimum necessary amount of cold air in the second air supply means. Can be cooled.

  A first temperature sensor for measuring a first temperature of the cold aisle, and when the first temperature exceeds the set temperature in the first air supply means, the first air temperature of the blower is higher than when the first temperature is within the set temperature range. While increasing the air volume and increasing the air volume of the cool air supplied from the blow-out unit, when the first temperature falls below the set temperature, the increased air volume is maintained when the first temperature exceeds the set temperature. When the cool air of the air volume is supplied from the blow-out unit and the first temperature exceeds the set temperature in the second air supply means, the air volume of the blower is increased more than when the first temperature is within the set temperature range. When at least one of the amount of cool air supplied from the blowout unit and the amount of cool air supplied to the underfloor space is increased and the first temperature falls below the set temperature, or when the first temperature exceeds the set temperature Increased airflow An air conditioning system for an information processing equipment room that supplies cold air of the air volume from the blow-out unit and the underfloor space while holding the server mounted in the server rack when the first temperature exceeds the set temperature in the first air supply means In this case, by increasing the air volume of the blower and increasing the air volume of the cool air supplied from the blow-out unit, the server can be sufficiently cooled and the temperature of the server can be lowered. Therefore, it is possible to reliably prevent a failure due to a temperature rise of the server in operation. The information processing equipment room air conditioning system maintains the increased air volume when the first temperature falls below the set temperature range in the first air supply means while maintaining the increased air volume when the first temperature exceeds the set temperature. By supplying cool air of an air volume from the blowing unit, it is possible to prevent the temperature of the server whose temperature has been lowered from rising again, and to maintain the lowered temperature of the server. In the air conditioning system for the information processing equipment room, when the first temperature exceeds the set temperature in the second air supply means, the temperature of the server mounted in the server rack rises, and in that case, the air volume of the blower is increased. By increasing at least one of the amount of cool air supplied from the blowout unit and the amount of cool air supplied to the underfloor space, the server can be sufficiently cooled, and failure due to temperature rise of the operating server can be avoided. It can be surely prevented. The air conditioning system for the information processing equipment room maintains the increased air volume when the first temperature falls below the set temperature range in the second air supply means while maintaining the increased air volume when the first temperature exceeds the set temperature. By supplying the cool air from the blowout unit and the underfloor space, it is possible to prevent the temperature of the server that has been lowered from rising again, and to maintain the lowered server temperature.

  The blow-out unit includes first to n-th air outlets, first to n-th air flow paths, and first to n-th wind speed adjustment mechanisms for adjusting the wind speed of the cold air passing through the air flow paths, The air conditioning system for the information processing equipment room that adjusts the speed of the cold air supplied from the first to nth air outlets and makes the cold air supplied from these outlets reach the target location of the cold aisle, By using the first to nth wind speed adjusting mechanisms, the cold air supplied from the first to nth air outlets can reach the target location of the cold aisle, so the first and second air supply means In this case, it is possible to supply cold air only to the cold aisle (target location) where the server rack on which the server is mounted using the blowout unit is located, so that the server mounted on the server rack can be reliably cooled. The air conditioning system for the information processing equipment room is required in the air conditioner when cooling the server because the cold air is supplied only to the cold aisle where the server rack on which the server is mounted is located using the first to nth wind speed adjusting mechanisms. More than the amount of cool air blowing energy is not consumed, and energy saving in the system can be achieved.

  Cold air is supplied to the front area of the cold aisle far from the location of the blow unit from the air outlet located at the upper stage of the first to nth air blow outlets, and the center is located at the middle of the cold aisle from the location of the blow unit. Cool air is supplied from the outlet located in the middle of the first to n-th air outlets to the area, and the first to n-th air outlets are disposed in the rear area of the cold aisle at a short distance from the position of the outlet unit. The air conditioning system for the information processing equipment room that supplies cold air from the outlet located in the lower stage is supplied from the outlets located in the upper, middle, and lower stages of the first to nth air outlets of the outlet unit. Since the cold air can reach the rear area, the central area, and the front area of the cold aisle, the server uses the first to nth air outlets of the outlet unit in the first and second air supply means. The implemented server rack can supply cold air only to the cold aisle (target location) that is located, it is possible to reliably cool the server implemented on the server rack. The air conditioning system for the information processing equipment room is required in the air conditioner when cooling the server because cold air is supplied only to the cold aisle where the server rack on which the server is mounted using the first to nth air outlets. More than the amount of cool air blowing energy is not consumed, and energy saving in the system can be achieved.

  An air conditioning system for an information processing equipment room that includes an air guide mechanism installed at a predetermined location on the ceiling of the cold aisle and guides the cold air supplied from the blowing unit to the target location of the cold aisle using the air guide mechanism. Since the cool air supplied from the blow-out unit can be directed to a predetermined portion of the cold aisle by the air guide mechanism, the server in which the server is mounted using the air guide mechanism in the first and second air supply means Cold air can be supplied only to the cold aisle (target location) where the rack is located, and the server mounted on the server rack can be reliably cooled.

  The first to nth air guide mechanisms that guide cold air to the target areas in the rear area, the central area, and the front area of the cold aisle are installed on the ceiling of the cold aisle in a state of being aligned in one direction, and guide the cold air to the target area Therefore, an air conditioning system for an information processing device room that turns on at least one of the first to n-th air guide mechanisms turns on the cool air supplied from the blowing unit of the first to n-th air guide mechanisms. Since at least one of them can be directed to a predetermined location of the cold aisle, in the first and second air supply means, the cold aisle (target goal) in which the server rack on which the server is mounted using the air guide mechanism is located. Cold air can be supplied only to the location), and the server mounted on the server rack can be reliably cooled.

  The first to nth wind guide mechanisms are formed of a wind direction plate extending in the vertical direction and a support member extending in the vertical direction and slidably supporting the wind direction plate. The air conditioning system for the information processing equipment room in which the wind direction plate hangs down from the ceiling in the ON state of the air conditioner uses the wind direction plate that hangs down from the ceiling to direct the cold air supplied from the blowing unit to a predetermined part of the cold aisle. Therefore, in the first and second air supply means, it is possible to supply cold air only to the cold aisle (target location) where the server rack on which the server is mounted using the air guide mechanism is located. The server mounted on can be reliably cooled.

  The cold air supplied from the blowout unit is directed to the target location of the cold aisle along the ceiling of the cold aisle by the Coanda effect, and to the target location of the cold aisle along the wall that partitions the cold aisle and the hot aisle by the Coanda effect. Since the air conditioning system for the information processing equipment room heading can direct the cool air supplied from the first to nth air outlets of the outlet unit toward the target location of the cold aisle by the Coanda effect, By using the Coanda effect, the cool air can be reliably supplied to the cold aisle (target location) where the server rack on which the server is mounted is located using the Coanda effect, and the server mounted on the server rack is reliably cooled. Can do.

  The setting rate is set in the range of 45 to 55% when the server is mounted on all of the server racks as 100%, and the first supply is made until the mounting rate becomes 1 to 45 to 55%. The air conditioning system for the information processing equipment room that implements the second air supply means until the mounting rate reaches from 45% to 55% to 100%, the mounting rate from 1% to 45% to 55% Since the first air supply means is implemented until the mounting rate reaches 45 to 55%, the cool air is not supplied from the air conditioner to the underfloor space until the mounting rate reaches 45 to 55%, and is used for cooling the server. The cooling air can be supplied only from the blow-out unit, and the cooling air is not consumed in the air conditioner when the server is cooled, so that energy saving in the system can be achieved. Since the air conditioning system for the information processing equipment room implements the second air supply means until the mounting rate reaches from 45% to 55% to 100%, the mounting rate exceeds the set rate, and a predetermined number of servers are operated. In some cases, all of these servers can be cooled evenly, and failure due to temperature rise of the servers in operation can be prevented.

The side view of the air-conditioning room and machine room of a data center which installed the air-conditioning system for information processing equipment rooms shown as an example. The front view of the air-conditioning room which installed the air-conditioning system for information processing equipment rooms. The top view of the air-conditioning room and machine room which installed the air-conditioning system for information processing equipment rooms. The side view of the 1st-3rd blowing unit shown as an example. The front view of the 1st wind guide mechanism shown as an example. The side view of the 1st air guide mechanism of FIG. The front view of the 2nd wind guide mechanism shown as an example. The side view of the 2nd wind guide mechanism of FIG. The front view of the 3rd wind guide mechanism shown as an example. The side view of the 3rd wind guide mechanism of FIG. The front view of the wind guide mechanism shown as another example. The side view similar to FIG. 1 explaining an example of a 1st air supply means. The front view similar to FIG. 2 explaining an example of a 1st air supply means. The side view similar to FIG. 1 explaining another example of a 1st air supply means. The side view similar to FIG. 1 explaining another example of a 1st air supply means. The flowchart explaining the air-conditioning driving | operation implemented in the air-conditioning system for information processing equipment rooms. The flowchart which continues from FIG. The flowchart which continues from FIG. The side view similar to FIG. 1 explaining an example of a 2nd air supply means. The front view similar to FIG. 2 explaining an example of a 2nd air supply means. The side view similar to FIG. 1 explaining another example of a 1st air supply means. The front view similar to FIG. 2 explaining another example of a 1st air supply means. The side view similar to FIG. 1 explaining another example of a 2nd air supply means.

  Referring to the accompanying drawings such as FIG. 1 which is a side view of the air conditioning room 12 and the machine room 26 of the data center 11 in which the air conditioning system 10A for the information processing equipment room shown as an example is installed, the information processing equipment room according to the present invention The details of the air conditioning system are as follows. 2 is a front view of the air conditioning room 12 in which the information processing equipment room air conditioning system 10A is installed, and FIG. 3 is an upper view of the air conditioning room 12 and the machine room 26 in which the information processing equipment room air conditioning system 10A is installed. FIG. FIG. 4 is a side view of first to third blowing units 19a to 19c shown as an example. In FIG. 1, the illustration of the sagging wall 24 is omitted, and in FIG. 2, the illustration of the first air guide mechanism 54 is omitted.

  The information processing equipment room air conditioning system 10A is installed in a data center 11, and is installed in a server rack 13 (information processing equipment storage rack) installed in an air conditioning room 12 (information processing equipment room) of the data center 11. Used to cool servers. The air conditioning system 10A can be used not only for the air conditioning room 12 of the data center 11, but also for various rooms where a plurality of servers (including other network devices) are installed and the servers need to be cooled. it can.

  The information processing equipment room air conditioning system 10A includes a server rack 13 installed in the air conditioning room 12, a cold aisle 14 and a hot aisle 15, first to third air conditioners 16a to 16c (air conditioners), and a plurality of first air conditioners. 1 temperature sensor 17a-17h, the 1st-3rd blowing unit 18a-18c, and the controller 19 (control apparatus) are comprised. The server rack 13 is formed of first to seventh server racks 13a to 13g (first to nth server racks), but the number of server racks is not particularly limited, and may be eight or more depending on the scale of the data center 11. Server racks may be installed.

  In FIG. 3, three first to third air conditioners 16a to 16c and three first to third blowout units 18a to 18c are illustrated, but the number of air conditioners and blowout units is particularly limited. There may be four or more air conditioners or blowing units depending on the volume of the air conditioning room 12 or the number of server racks 13a to 13g installed there, or one air conditioner or blowing unit may be installed. Good.

  The server racks 13a to 13g are continuously arranged in the front-rear direction (one direction), are arranged at equal intervals in the lateral direction (intersection direction intersecting with one direction), and are parallel to each other in the lateral direction. 12 is installed. Although not shown, a plurality of servers (including other network devices) are installed and fixed in the server racks 13a to 13g. These servers are connected to a power supply device, and self-heat is generated by operating heat during operation, and the temperature rises.

  The cold aisle 14 is located between the adjacent server racks 13a to 13g and extends in the front-rear direction. The cold aisle 14 includes a front area 20 (front end) that is spaced forward from the first to third blowing units 18a to 18c (air conditioners 16a to 16c), and immediately before the blowing units 18a to 18c (air conditioners 16a to 16c). Rear area 22 (rear end portion) and a central area 21 (central portion) between the front area 20 and the rear area 22. The front area 20 is located at a long distance away from the blowing units 18a to 18c (air conditioners 16a to 16c), and the central area 21 is located at a medium distance from the blowing units 18a to 18c (air conditioners 16a to 16c). The rear area 22 is located at a short distance from the blowing units 18a to 18c (air conditioners 16a to 16c).

  The cold aisle 14 is located between the ceiling 51 (ceiling panel), the floor 52 (floor panel), the side wall, the adjacent server racks 13a to 13g, and the top 23 and the ceiling 51 of the server racks 13a to 13g. It is surrounded by a dripping wall 24 (see FIG. 2) extending in the vertical direction. The cold aisle 14 has a predetermined volume that allows passage of cold air (cooling air). Although not shown, the cold aisle opening panel extending in the front-rear direction is provided on the floor 52 of the cold aisle 14.

  The hot aisle 15 is located between the adjacent server racks 13 a to 13 g and on the opposite side of the cold aisle 14 with the server racks 13 a to 13 g interposed therebetween, and extends in the front-rear direction in parallel with the cold aisle 14. The hot aisle 15 is surrounded by a ceiling 51 (ceiling panel), a floor 52 (floor panel), side walls, adjacent server racks 13a to 13g, and a leaning wall 24.

  The hot aisle 15 has a predetermined volume through which warm air (heated air) flows. The ceiling 51 of the hot aisle 15 is provided with a hot air suction opening extending in the front-rear direction, although not shown. The cold aisle 14 and the hot aisle 15 are partitioned by server racks 13 a to 13 g and a leaning wall 24.

  The 1st-3rd air conditioners 16a-16c are floor-standing types, and are installed in the floor of the machine room 25 adjacent to the air-conditioning room 12 across the side wall. The air conditioners 16 a to 16 c cool the air-fuel mixture of the warm air recirculated from the air-conditioning chamber 12 to produce air-cooled air having a predetermined temperature, and supply the cold air to the cold aisle 14 of the air-conditioning chamber 12. . Although the water cooling / inverter type is used for the air conditioners 16a to 16c, an air cooling type or a water cooling type air conditioner can be used.

  These air conditioners 16a to 16c are provided with an intake port 26 for a mixture of recirculation air from the air conditioning chamber 12 and outside air, inside which a cooling coil 27, a blower fan 28, a filter (not shown), and a humidifier. (Not shown). The blower fan 28 has its blower capacity (output) adjusted by inverter control. In addition, there is no restriction | limiting in particular in the number of the ventilation fans 28, According to the air-conditioning capability of the air conditioners 16a-16c, the 1 or several ventilation fan 28 is installed in the air conditioners 16a-16c. A first air supply duct 29 is connected to the tops of the air conditioners 16a to 16c, and a second air supply duct 30 is connected to the bottoms of the air conditioners 16a to 16c.

  The first air supply duct 29 extends upward from the tops of the air conditioners 16a to 16c, and the blow-out units 18a to 18c are connected to the front ends thereof. A first motor damper 31 (first damper) (MD) is installed in the first air supply duct 29. In the first air supply duct 29, the amount of cold air passing therethrough is adjusted by the opening of the first motor damper 31 (the turning angle of the turning blades of the motor damper 31).

  A first blower unit 18a is connected to the first air conditioner 16a via a first air supply duct 29, and a second blower unit 18b is connected to the second air conditioner 16b via a first air supply duct 29. In addition, the third blower unit 18 c is connected to the third air conditioner 16 c via the first air supply duct 29.

  The second air supply duct 30 extends forward from the bottom of the air conditioners 16a to 16c, and the tip of the second air supply duct 30 is disposed in the underfloor space 32 of the air conditioning chamber 12 through the side wall. A second motor damper 33 (second damper) (MD) is installed in the second air supply duct 30. In the second air supply duct 30, the amount of cold air passing therethrough is adjusted by the opening of the second motor damper 33 (the turning angle of the turning blades of the motor damper 33).

  The leading ends of the second air supply ducts 30 extending from the bottoms of the first to third air conditioners 16 a to 16 c are located in the underfloor space 32 of the air conditioning chamber 12. An underfloor air guiding mechanism 53 (wind direction plate) is installed in the underfloor space 32 located in the central area 21 of the cold aisle 14. The underfloor air guiding mechanism 53 hangs from the floor 52 toward the underfloor space 32. The underfloor air guiding mechanism 53 controls the flow of the cold air in the space 32 and appropriately adjusts the wind speed distribution of the cold aisle 14. Although not shown, the underfloor space 32 includes a plurality of cables extending from the servers accommodated in the server rack 13, a plurality of cables extending from other network devices, a connecting jig for connecting the cables, and the like. Many obstacles are stored.

  The first temperature sensors 17a to 17h are arranged in server racks 13a, 13c, 13e, and 13g extending to the cold aisle 14. Among the first temperature sensors 17a to 17h, the temperature sensors 17a to 17d are installed at the top 23 of the server racks 13a, 13c, 13e, and 13g located on the cold aisle 14 side, and are equally spaced in the front-rear direction (one direction). They are lined up apart. The temperature sensors 17 a to 17 d measure the first temperature of the cold aisle 14 at the top 23 of the server racks 13 a, 13 c, 13 e, and 13 g and transmit the measured first temperature signal to the controller 19.

  Among the first temperature sensors 17a to 17h, the temperature sensors 17e to 17h are installed on the bottom 34 of the server racks 13a, 13c, 13e, and 13g located on the cold aisle 14 side, and are equally spaced in the front-rear direction (one direction). They are lined up apart. The temperature sensors 17e to 17h measure the first temperature of the cold aisle 14 at the bottom 34 of the server racks 13a, 13c, 13e, and 13g, and transmit the measured first temperature signal to the controller 19. In FIG. 1, four first temperature sensors are arranged at substantially equal intervals in the front-rear direction, but five or more first temperature sensors are arranged at substantially equal intervals depending on the number of server racks 13a to 13g installed in the air conditioning room 12. Sometimes installed.

  The first to third blowing units 18 a to 18 c are located between the lower part (directly below) the ceiling 51 of the cold aisle 14 and the upper part 24 of the server racks 13 a to 13 g, and forward from the rear area 22 of the cold aisle 14. Cool air is supplied in the front-rear direction (one direction) toward the area 20. As shown in FIG. 4, the first to third blowing units 18 a to 18 c are connected to the front end portion of the first air supply duct 29, and are connected to the air supply chamber 35 and forward from the chamber 35. First to third branch ducts 36a to 36c extending to the first to third wind speed adjusting dampers 37a to 37c (first to nth wind speed adjusting mechanisms) installed in the first to third branch ducts 36a to 36c, The blowout housing 38 is connected to the branch ducts 36a to 36c.

  The first to third branch ducts 36a to 36c are arranged in the order of the first branch duct 36a, the second branch duct 36b, and the third branch duct 36c from the upper side to the lower side. A first wind speed adjusting damper 37a is installed in the first branch duct 36a, a second wind speed adjusting damper 37b is installed in the second branch duct 36b, and a third wind speed is installed in the third branch duct 36c. An adjustment damper 37c is installed.

  Although the air volume adjustment damper (VD) is used for the first to third wind speed adjustment dampers 37a to 37c, a motor damper (MD) can also be used. In the first to third branch ducts 36a to 36c, the ducts 36a to 36c are adjusted by adjusting the opening degree of the first to third wind speed adjusting dampers 37a to 37c (the turning angle of the swirling blades of the wind speed adjusting dampers 37a to 37c). The wind speed (air volume) of the cold wind passing through is adjusted.

  The blowout housing 38 has front and rear walls, a top bottom wall, and both side walls, and has an internal space 39 surrounded by these walls. The blowout housing 38 is fixed to a side wall that partitions the air conditioning room 12 and the machine room 25. First to third air inlets 40a to 40c (air inlets) are formed on the rear wall. The air inlets 40a to 40c are a first air inlet 40a located near the ceiling 51 of the cold aisle 14 from above to below, a second air inlet 40b located immediately below the first air inlet 40a, They are arranged in the order of the third air inlet 40c located immediately below the second air inlet 40b.

  A first branch duct 36a is connected to the first air inlet 40a, and a second branch duct 36b is connected to the second air inlet 40b. A third branch duct 36c is connected to the third air inlet 40c. First to third air outlets 41a to 41c (first to nth air outlets) are formed on the front wall. The air outlets 41a to 41c are first air outlets 41a located in the vicinity (upper stage) of the ceiling 51 of the cold aisle 14 from the upper side to the lower side, and the first air outlets 41a and 41c located directly below (middle stage) of the first air outlets 41a. The second air outlet 41b and the third air outlet 41c located directly below (lower stage) of the second air outlet 41b are arranged in this order.

  A partition plate 42 is installed in the internal space 39 of the blowout housing 38. In the internal space 39 of the blowout housing 38, first to third air flow paths 43 a to 43 c (first to nth air flow paths) are formed by the partition plates 42. The air flow paths 43a to 43c are arranged in the order of the upper first air flow path 43a, the middle second air flow path 43b, and the lower third air flow path 43c from the top to the bottom. The first air channel 43a extends between the first air inlet 40a and the first air outlet 41a. The second air flow path 43b extends between the second air inlet 40b and the second air outlet 41b. The third air flow path 43c extends between the third air inlet 40c and the third air outlet 41c.

  In the blowing units 18a to 18c, by adjusting the opening degree of the first to third air speed adjusting dampers 37a to 37c, the speed of the cold air supplied from the first to third air outlets 41a to 41c is adjusted, The reach | attainment distance to the front in the cold aisle 14 of the cold wind supplied from these blower outlets 41a-41c is changed.

  The controller 19 is a computer having a central processing unit (CPU or MPU) and memory (main memory and cache memory), and has a built-in storage device. Input / output devices such as a numeric keypad unit (not shown) and a display (not shown) are connected to the controller 19 via an interface. The central processing unit of the controller 19 activates an application from the memory based on the control by the operating system, and implements a first air supply unit and a second air supply unit to be described later according to the activated application.

  The controller 19 is electrically connected to the controller of the blower fan 28 by a signal line or wirelessly, and the controllers of the first and second motor dampers 31 and 33 are electrically connected by a signal line or wirelessly, The first temperature sensors 17a to 17h are electrically connected by signal lines or wirelessly.

  The controller 19 receives server mounting rates (mounting position information and mounting amount information) for the server racks 13a to 13g using an input device. The mounting rate is stored in the storage device of the controller 19. The storage device stores server setting rates for the server racks 13a to 13g. The setting rate is set within a range of 45 to 55%, assuming that the server is mounted in all of the server racks 13a to 13g as 100%. The setting rate can be freely changed using the input device as long as it is within the above range. The storage device stores the set temperature of the cold aisle 14. The set temperature can be freely changed via the input device.

  The storage device of the controller 19 stores the opening degree of the first motor damper 31 with respect to the amount of cold air supplied from the first air supply duct 29 to the blow-out units 18a to 18c in the first air supply means. The output (air blowing capacity) of the blower fan 28 with respect to the amount of cool air supplied from the duct 29 to the blow-out units 18a to 18c is stored. The storage device stores the opening degree of the first and second motor dampers 31 and 33 with respect to the amount of cold air supplied from the first and second air supply ducts 29 and 30 in the second air supply means. The blowing capacity (output) of the blower fan 28 with respect to the amount of cool air supplied from the second supply ducts 29 and 30 is stored.

  In the storage device of the controller 19, the increase rate (the increase amount of the air volume) of the output (air blowing capacity) of the blower fan 28 when the first temperature measured by any of the first temperature sensors 17a to 17h exceeds the set temperature. Is stored. The storage device stores a reduction rate (amount of airflow reduction) of the output (airflow capability) of the blower fan 28 when the first temperature measured by any of the first temperature sensors 17a to 17h is lower than the set temperature. ing.

  As shown in FIG. 3, adjacent air conditioners 16a and 16b are connected by a bypass duct 44, and adjacent air conditioners 16b and 16c are connected by a bypass duct 44, so that the system 10A is made redundant. A bypass damper 45 is installed in the bypass duct 44. During normal air conditioning operation, the air flow path of the bypass damper 45 is closed (opening degree is 0).

  In the information processing equipment room air conditioning system 10A, for example, when the air conditioner 16c fails for some reason or when maintenance of the air conditioner 16c is necessary, the bypass damper 45 is opened (fully opened), and the air conditioner 16a or air conditioner is opened. The shortage of the cold air of the air conditioner 16c can be compensated from the machine 16b, the inadvertent stop of the system 10A can be prevented, and the failed air conditioner 16c can be repaired without stopping the system 10A or the air conditioner Maintenance of 16c can be performed.

  FIG. 5 is a front view of the first air guide mechanism 46a shown as an example, and FIG. 6 is a side view of the first air guide mechanism 46a of FIG. FIG. 7 is a front view of the second air guiding mechanism 46b shown as an example, and FIG. 8 is a side view of the second air guiding mechanism 46b. FIG. 9 is a front view of a third air guide mechanism 46c shown as an example, and FIG. 10 is a side view of the third air guide mechanism 46c. FIG. 11 is a front view of an air guide mechanism 46d shown as another example.

  First to third air guide mechanisms 46a to 46c (first to nth air guide mechanisms) are installed at predetermined locations on the ceiling 51 extending between the front area 20 and the central area 21 of the cold aisle 14. Yes. In addition, the installation location of the air guide mechanism can be arbitrarily determined. In FIG. 1, three first to third air guide mechanisms 46a to 46c are installed on the ceiling 51. However, the number of air guide mechanisms is not particularly limited, and the server racks 13a to 13g are arranged in the front-rear direction. Depending on the length, four or more wind guide mechanisms (first to nth wind guide mechanisms) may be installed.

  The first air guide mechanism 46a shown in FIG. 5 is installed on the ceiling 51 on the front area 20 side of the cold aisle 14 so as to be able to turn, and hangs down from the ceiling 51 when used. The first air guide mechanism 46a is formed of a wind direction plate 47 that extends in the vertical direction and a support frame 48 (support member) that extends in the vertical direction and supports the wind direction plate 47 so as to be slidable. In the first air guide mechanism 46a, the wind direction plate 47 is removably inserted into the support frame 48. As shown by the arrows in FIG. 6, the first air guiding mechanism 46 a is configured so that the cold air supplied from the upper first air outlet 41 a of the blowing units 18 a to 18 c hits the wind direction plate 47, thereby causing the cold air to flow in the front-rear direction. Guide down (in the direction of the server rack).

  The second air guiding mechanism 46b shown in FIG. 7 is installed on the ceiling 51 between the front area 20 and the central area 21 of the cold aisle 14 so as to be able to turn, and hangs down from the ceiling 51 when used. The second air guide mechanism 46b is formed of a wind direction plate 47 and a support frame 48 (support member) that slidably supports the wind direction plate 47. In the second air guiding mechanism 46b, the wind direction plate 47 is positioned at the lower 2/3 of the support frame 48, the lower 2/3 of the support frame 48 is closed, the upper 1/3 of the support frame 48 is opened, and the upper 1 A vent 49 is formed at / 3.

  In the second air guiding mechanism 46b, as indicated by arrows in FIG. 8, the cold air supplied from the upper first air outlet 41a of the blowing units 18a to 18c is formed in the upper third of the support frame 48. The cold air that flows forward through the air vent 49 and is supplied from the middle second air outlet 41b and the lower third air outlet 41c of the blowing units 18a to 18c strikes the wind direction plate 47, thereby Guide from the front-rear direction to the bottom (server rack direction).

  The third air guiding mechanism 46c shown in FIG. 9 is installed on the ceiling 51 on the central area 21 side of the cold aisle 14 so as to be able to turn, and hangs down from the ceiling 51 when used. The third wind guide mechanism 46c is formed of a wind direction plate 47 and a support frame 48 (support member) that supports the wind direction plate 47 so as to be slidable. In the third air guide mechanism 46c, the wind direction plate 47 is positioned at the lower third of the support frame 48, the lower third of the support frame 48 is closed, the upper second second of the support frame 48 is opened, and the upper 2 A vent 49 is formed at / 3.

  In the third air guide mechanism 46c, as indicated by arrows in FIG. 10, the cool air supplied from the upper and middle first and second air outlets 41a and 41b of the blow units 18a to 18c is The cold air that flows forward through the vent hole 49 formed in 2/3 and is supplied from the lower third air outlet 41c of the blow-out units 18a to 18c hits the wind direction plate 47. Guide from below to the server rack direction.

  The wind guide mechanism 46d shown in FIG. 11 is formed of a wind direction plate 47 and a support frame 48 (support member) that supports the wind direction plate 47 so as to be slidable. In this wind guide mechanism 46d, the wind direction plate 47 is positioned at the upper third of the support frame 48, the upper first third of the support frame 48 is closed, the lower two third of the support frame 48 is opened, and the lower second / 3 is formed with a vent 49. The illustrated air guide mechanisms 46a to 46d are merely examples, and other types of air guide mechanisms can be used.

  In these wind guide mechanisms 46a to 46d, by adjusting the length of the wind direction plate 47 in the vertical direction, the dimension of the wind guide mechanisms 46a to 46d extending upward from the top 23 of the server racks 13a to 13g (closed dimension). Can be adjusted, and the extension dimension (open dimension) downward from the ceiling 51 of the vent hole 49 of the air guide mechanisms 46a to 46d can be adjusted. Further, by adjusting the length of the wind direction plate 47 in the vertical direction, it is possible to adjust the downward extension (closed dimension) of the air guide mechanisms 46a to 46d from the ceiling 51, and the air guide mechanisms 46a to 46d. The dimension of the vent 49 extending upward from the top 23 of the server racks 13a to 13g (open dimension) can be adjusted.

  These wind guide mechanisms 46a to 46d are provided with automatic opening / closing devices (not shown). The automatic opening / closing devices of the air guide mechanisms 46a to 46d are electrically connected to the controller 19 by signal lines or wirelessly. As shown by arrows in FIGS. 6, 8, and 10, the air guide mechanisms 46 a to 46 d can be automatically turned up and down with respect to the ceiling 51 by the automatic opening and closing device.

  By turning the air guide mechanisms 46a to 46d downward from the ceiling 51, the air guide mechanisms 46a to 46d (the wind direction plate 47 and the support frame 48) are suspended from the ceiling 51, and the air guide mechanisms 46a to 46d are suspended from the suspended state. The air guide mechanisms 46 a to 46 d (the wind direction plate 47 and the support frame 48) are accommodated in the ceiling 51 by turning upward. In addition, when the automatic opening / closing device is not installed in the air guide mechanisms 46a to 46d, the air guide mechanisms 46a to 46d are manually turned.

  FIG. 12 is a side view similar to FIG. 1 for explaining an example of the first air supply means, and FIG. 13 is a front view similar to FIG. 2 for explaining an example of the first air supply means. FIG. 14 is a side view similar to FIG. 1 for explaining another example of the first air supply means, and FIG. 15 is a side view similar to FIG. 1 for explaining another example of the first air supply means. is there. FIG. 16 is a flowchart for explaining the air conditioning operation performed in the information processing equipment room air conditioning system 10A, and FIG. 17 is a flowchart continued from FIG. FIG. 18 is a flowchart continuing from FIG. 12, 14, and 15, the controller 19 is not shown, and only the air conditioner 16 a and the blowout unit 18 a are exemplified to describe the first air supply means. In FIG. 13, the first to third air guide mechanisms 46 a to 46 c and the underfloor air guide mechanism 53 are not shown.

  In the data center 11, these servers self-heat due to the operation of a plurality of servers mounted in the server racks 13a to 13g, and the temperature of these servers rises. If the temperature rise of the server is left as it is, the server may break down, and the operation of the data center 11 will be hindered. Accordingly, it is necessary to cool the servers by supplying cold air from the air conditioners 16a to 16c.

  However, if servers are not mounted in all the server racks 13a to 13g and the server mounting rate in the server racks 13a to 13g is low, if cold air is supplied to all of the server racks 13a to 13g, the cold air is wasted. As a result, excess cool air blowing energy that generates useless cool air is consumed in the air conditioners 16a to 16c, and energy saving of the system 10A cannot be achieved.

  In this information processing equipment room air conditioning system 10A, a server is mounted from the seventh server rack 13g located in the front area 20 of the long distance cold aisle 14 away from the blowout units 18a to 18c (air conditioners 16a to 16c). When the server mounting rate falls below a preset setting rate, the first air supply means is implemented. In the information processing equipment room air conditioning system 10A, when the server is mounted from the seventh server rack 13g located in the front area 20 toward the first server rack 13a located in the rear area 22, the mounting rate exceeds the set rate. The 2nd air supply means is implemented.

  When the information processing equipment room air-conditioning system 10A is activated, the server mounting rate (mounting position information and mounting amount information) is input by the input device, and the mounting rate is stored in the storage device, the controller 19 is input. The preset mounting rate, the preset setting rate (for example, set to 50% from the range of 45 to 55%), and the preset set temperature are read from the storage device (S-10).

  Next, the controller 19 compares the mounting rate with the setting rate (50%), and determines whether the mounting rate is below the setting rate (S-11). Conversely, in step 11 (S-11), it may be determined whether the mounting rate exceeds the set rate. In FIG. 12, the server is mounted only in the seventh server rack 13g, the server is not mounted in the first to sixth server racks 13a to 13f, and the server mounting ratio with respect to the entire server racks 13a to 13g is about 14.4. 2%. Therefore, the mounting rate (about 14.2%) is less than the setting rate (50%), and the mounting rate is lower than the setting rate.

  The controller 19 determines that the server mounting rate is lower than the set rate, and does not supply cold air from the air conditioner 16a to the underfloor space 32, and the cold where the seventh server rack 13g mounted with the server from the blowout unit 18a is located. First air supply means for supplying cold air toward the aisle 14 is implemented (S-12). The first air supply means is implemented until the mounting rate is 1% to 45 to 55% (set rate). The controller 19 uses the first air supply means to cool air supplied from the air outlet unit 18a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. For example, the air volume is adjusted to 20%.

  The controller 19 transmits an activation signal to the control unit of the blower fan 28 and transmits an output (blowing capacity) instruction signal corresponding to 20% of the cool air supplied from the blowout unit 18 a to the control unit of the blower fan 28. . The control unit of the blower fan 28 starts the blower fan 28 in accordance with the start signal from the controller 19, controls the output of the blower fan 28 in accordance with the output instruction signal from the controller 19, and supplies air from the blowout unit 18 a. The output corresponding to 20% of cold air is maintained. In the first air supply means, by adjusting the output of the blower fan 28, the air volume of the cool air supplied from the blow-out unit 18a is changed according to the server mounting rate on the server racks 13a to 13g. In addition, the output of the ventilation fan 28 according to the mounting rate of a server can be set arbitrarily.

  The controller 19 transmits an activation signal to the control unit of the first motor damper 31 and transmits an opening degree instruction signal corresponding to 20% of the cool air supplied from the blowing unit 18 a to the control unit of the motor damper 31. The control unit of the first motor damper 31 activates the motor damper 31 according to the activation signal from the controller 19 and matches the opening degree with that of the opening degree instruction signal according to the opening degree instruction signal from the controller 19. The opening corresponding to the air volume 20% of the cool air to be supplied is maintained. In the first air supply means, by adjusting the opening degree of the first motor damper 31, the air volume of the cool air supplied from the blow-out unit 18a is changed according to the mounting rate of the servers in the server racks 13a to 13g. In addition, the opening degree of the motor damper 31 according to the mounting rate of the server can be set arbitrarily.

  The controller 19 transmits an ON signal (open signal) to the automatic opening / closing device of the first air guide mechanism 46a. The automatic opening / closing device turns the first air guide mechanism 46 a downward from the ceiling 51 in accordance with the ON signal transmitted from the controller 19. As a result, the first air guide mechanism 46 a hangs down from the ceiling 51. An ON signal is not transmitted to the second and third air guide mechanisms 46 b and 46 c, and the state where the air guide mechanisms 46 b and 46 c are stored in the ceiling 51 is maintained.

  The cold air supplied from the air conditioner 16a through the blower fan 28 flows into the blowout unit 18a through the motor damper 31, and as shown in FIG. 12, the cold aisle is discharged from the first blower outlet 41a at the upper stage of the blowout unit 18a. The air is supplied forward toward the front area 20 of 14. When the cold wind reaches the front area 20 of the cold aisle 14, it collides with the wind direction plate 47 of the first air guiding mechanism 46a, and its traveling direction is changed from the front-rear direction to the lower direction, and is guided toward the seventh server rack 13g. Is done.

  The cool air supplied from the first air outlet 41a of the blowout unit 18a travels toward the front area 20 (target location) of the cold aisle 14 along the ceiling 51 and the leaning wall 24 of the cold aisle 14 by the Coanda effect. Cold air is reliably supplied to the cold aisle 14 where the seventh server rack 13g on which the server is mounted using the Coanda effect is located.

  When the first air supply means for supplying air far away from the blowing unit 18a in FIG. 12 is implemented, the first to third wind speed adjustment dampers 37a to 37c are opened, and the first wind speed adjustment damper 37a is included therein. The wind speed setting is the fastest. In this case, the cold air is supplied forward from the first to third outlets 41 a to 41 c toward the front area 20 of the cold aisle 14.

  As shown by the arrows in FIG. 13, the cool air directed toward the server rack 13g flows into the server rack 13g from the side of the seventh server rack 13g, and flows through the server rack 13g while passing through the server mounted on the server rack 13g. Cooling. The cold air that has cooled the server absorbs the heat of the server and changes to hot air, and the hot air flows out from the side of the server rack 13 g and flows into the hot aisle 15.

  The hot air that has flowed into the hot aisle 15 flows into the ceiling space 50 of the air conditioning chamber 12 through the hot air suction opening, and then passes through the ceiling space 50 and passes from the air conditioning chamber 12 to the machine room as indicated by an arrow in FIG. 25 flows into the air conditioner 16a again. A part of the warm air is released to the outside air, and the remaining mixture of the warm air and the outside air flows into the air conditioner 16a. The hot air (air mixture) flowing into the air conditioner 16a is cooled by the air conditioner 16a to become cold air, and is supplied again from the blowout unit 18a toward the seventh server rack 13g of the cold aisle 14.

  In the information processing equipment room air conditioning system 10A shown in FIG. 14, servers are mounted on the sixth and seventh server racks 13f and 13g, and servers are not mounted on the first to fifth server racks 13a to 13e. The rate is about 28.5%. Therefore, the mounting rate (about 28.5%) is less than the setting rate (50%), and the mounting rate is lower than the setting rate. When the mounting rate (28.5% and mounting position information) is input by the input device, the controller 19 reads the mounting rate, the set rate, and the set temperature from the storage device (S-10), and step 11 (S-11). ), The mounting rate (28.5%) is compared with the setting rate (50%), and it is determined whether the mounting rate is lower than the setting rate (or whether the mounting rate is higher than the setting rate). .

  If the controller 19 determines that the mounting rate is lower than the set rate, the sixth and seventh server racks 13f and 13g mounted with the server from the blowout unit 18a do not supply cool air from the air conditioner 16a to the underfloor space 32. First air supply means for supplying cold air toward the cold aisle 14 is implemented (S-12). The controller 19 uses the first air supply means to cool air supplied from the air outlet unit 18a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. The air volume is adjusted to 30%, for example.

  The controller 19 transmits an opening degree instruction signal corresponding to 30% of the cool air supplied from the blowing unit 18 a to the control unit of the first motor damper 31. The control unit of the first motor damper 31 matches the opening degree with that of the opening degree instruction signal in accordance with the opening degree instruction signal from the controller 19, and maintains the opening degree corresponding to 30% of the cool air supplied from the blowing unit 18a. .

  The controller 19 transmits an output (blowing capacity) instruction signal corresponding to 30% of the cool air supplied from the blowout unit 18 a to the control unit of the blower fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal from the controller 19, and maintains an output corresponding to 30% of the cool air supplied from the blowout unit 18a.

  The controller 19 transmits an ON signal (open signal) to the automatic opening / closing device of the second air guide mechanism 46b. The automatic switchgear turns the air guide mechanism 46b downward from the ceiling 51 in accordance with the ON signal transmitted from the controller 19. As a result, the air guide mechanism 46b hangs down from the ceiling 51. The first air guide mechanism 46a is already suspended from the ceiling 51. The ON signal is not transmitted to the second air guiding mechanism 46c, and the state where the air guiding mechanism 46c is housed in the ceiling 51 is maintained.

  The cool air supplied from the air conditioner 16a through the blower fan 28 flows into the blowout unit 18a through the first motor damper 31, and as shown in FIG. 14, the first to first lower stages from the upper stage of the blowout unit 18a. Air is supplied from the three outlets 41a to 41c. At this time, the cold air is supplied forward toward the front area 20 of the cold aisle 14 and between the front area 20 and the central area 21 by slowing the wind speed of the third outlet 41c.

  The cold air supplied from the first air outlet 41a, after passing through the vent 49 formed in the upper third of the second air guide mechanism 46b, collides with the wind direction plate 47 of the first air guide mechanism 46a, It is guided toward the seventh server rack 13g. The cool air supplied from the second air outlet 41b collides with the wind direction plate 47 that closes the lower 2/3 of the second air guide mechanism 46b, and its traveling direction is changed from the front-rear direction to the lower direction, and the sixth server It is guided toward the rack 13f.

  Similarly to FIG. 12, the cold air supplied from the first outlet 41 a of the blowout unit 18 a flows along the ceiling 51 and the leaning wall 24 of the cold aisle 14 due to the Coanda effect. Head to the target location. Cold air is reliably supplied to the cold aisle 14 where the seventh server rack 13g on which the server is mounted using the Coanda effect is located.

  In addition, at the time of implementation of the 1st air supply means shown in FIG. 14, it supplies from the 1st-3rd blower outlets 41a-41c of the lower stage from the upper stage of the blowing unit 18a. At this time, the cold air is supplied forward toward the front area 20 of the cold aisle 14 and between the front area 20 and the central area 21 by slowing the wind speed of the third outlet 41c.

  The cool air directed toward the sixth and seventh server racks 13f and 13g flows into the server racks 13f and 13g from the side of the server racks 13f and 13g, and is mounted on the server racks 13f and 13g while flowing through the server racks 13f and 13g. The server that has been replaced. The movement path of the supplied cool air flowing through the server racks 13f and 13g is the same as that shown in FIGS.

  In the information processing equipment room air conditioning system 10A shown in FIG. 15, servers are mounted on the fifth to seventh server racks 13e to 13g, and servers are not mounted on the first to fourth server racks 13a to 13d. The rate is about 42.8%. Therefore, the mounting rate (about 42.8%) is less than the setting rate (50%), and the mounting rate is lower than the setting rate. When the mounting rate (42.8% and mounting position information) is input by the input device, the controller 19 reads the mounting rate, the set rate, and the set temperature from the storage device (S-10), and step 11 (S-11). ), The mounting rate (42.8%) is compared with the set rate (50%) to determine whether the mounting rate is lower than the set rate (or whether the mounting rate is higher than the set rate). .

  When the controller 19 determines that the mounting rate is lower than the set rate, the cold aisle 14 in which the server racks 13e to 13g in which the servers are mounted from the blowing unit 18a is located without supplying cool air from the air conditioner 16a to the underfloor space 32. First air supply means for supplying cold air toward the air is carried out (S-12). The controller 19 uses the first air supply means to cool air supplied from the air outlet unit 18a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. For example, the air volume is adjusted to 40%.

  The controller 19 transmits an output (air blowing capability) instruction signal corresponding to 40% of the cold air supplied from the blow-out unit 18 a to the control unit of the air blowing fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal from the controller 19, and maintains an output corresponding to 40% of the cool air supplied from the blowout unit 18a.

  The controller 19 transmits an opening degree instruction signal corresponding to 40% of the cool air supplied from the blowing unit 18 a to the control unit of the first motor damper 31. The controller of the first motor damper 31 matches the opening with that of the opening instruction signal according to the opening instruction signal from the controller 19, and maintains the opening corresponding to 40% of the cool air supplied from the blowing unit 18a. To do.

  The controller 19 transmits an ON signal (open signal) to the automatic opening / closing device of the third air guide mechanism 46c. The automatic opening / closing device turns the third air guide mechanism 46 c downward from the ceiling 51 in accordance with the ON signal transmitted from the controller 19. As a result, the air guide mechanism 46 c hangs down from the ceiling 51. The first and second air guide mechanisms 46 a and 46 b are already suspended from the ceiling 51. In the blowing unit 18a, the first to third wind speed adjusting dampers 37a to 37d are opened.

  The cold air supplied from the air conditioner 16a via the blower fan 28 flows into the blowout unit 18a through the motor damper 31, and as shown in FIG. 15, the first to third blowout ports 41a to 41c of the blowout unit 18a. From the front area 20 and the central area 21 of the cold aisle 14 and between the front area 20 and the central area 21.

  The cold air supplied from the first air outlet 41a, after passing through the vent 49 formed in the upper third of the second air guide mechanism 46b, collides with the wind direction plate 47 of the first air guide mechanism 46a, It is guided toward the server rack 13g. The cool air supplied from the second air outlet 41b passes through the vent 49 formed in the upper 2/3 of the third air guide mechanism 46c, and then collides with the wind direction plate 47 of the second air guide mechanism 46b. It is guided toward the server rack 13f. The cold air supplied from the third outlet 41c collides with the wind direction plate 47 that closes the lower third of the third air guide mechanism 46c, and its traveling direction is changed from the front-rear direction to the lower direction, and the server rack 13e. Be guided towards.

  Similarly to FIG. 12, the cold air supplied from the first outlet 41 a of the blowout unit 18 a flows along the ceiling 51 and the leaning wall 24 of the cold aisle 14 due to the Coanda effect. Head to the target location. Cold air is reliably supplied to the cold aisle 14 where the server rack 13g on which the server is mounted using the Coanda effect is located.

  The cool air directed toward the server racks 13e to 13g flows into the racks 13e to 13g from the side of the server racks 13e to 13g, and cools the servers mounted on the racks 13e to 13g while flowing through the racks 13e to 13g. The movement path of the supplied cool air flowing through the server racks 13e to 13g is the same as that shown in FIGS.

  In the information processing equipment room air conditioning system 10A, when the server mounting rate in the server racks 13a to 13g is lower than the set rate, the server is mounted without supplying cool air from the air conditioners 16a to 16c to the underfloor space 32. Since the first air supply means for supplying cold air from the blowing units 18a to 18c toward the cold aisle 14 where the server rack (13g, 13f and 13g, or 13e to 13g) is located is implemented, the server rack ( 13g, or 13f and 13g, or 13e to 13g) can be cooled, as well as server racks (13a to 13f or 13a to 13e, or 13a to 13d), the cold air is hardly supplied, and the cold air used for cooling the server is necessary. Can be limited, it is possible to prevent the supply air from the air conditioner 16a~16c the required amount or more cold air that is not used to cool the server.

  The information processing equipment room air-conditioning system 10A uses cold air that is centered on the cold aisle 14 where a server rack (13g, 13f and 13g, or 13e-13g) on which a server is mounted using the blowing units 18a to 18c is located. Therefore, when the server is cooled, the air-conditioners 16a to 16c do not consume more than the necessary amount of cool air blowing energy, and energy saving in the information processing equipment room air-conditioning system 10A can be achieved.

  The information processing equipment room air conditioning system 10A adjusts the opening of the first motor damper 31 and the output of the blower fan 28, thereby supplying air from the blow-out units 18a to 18c in the first air supply means according to the server mounting rate. Since the amount of cool air to be changed is changed, the amount of cool air supplied from the blow-out units 18a to 18c can be reduced when the mounting rate is low, and the cool air supplied from the blow-out units 18a to 18c as the mounting rate increases. The air volume can be increased. Therefore, the servers mounted in the server racks 13e to 13g can be cooled by using the minimum necessary amount of cold air in the first air supply means.

  Although the temperature of the self-heating of the server varies depending on the operating status of the server, the server having a high operating rate tends to have a high temperature, and the temperature of the cold aisle 14 in the vicinity thereof increases more than expected due to the heat of the server. There is a case where the temperature of the cold aisle 14 exceeds the set temperature range while the one air supply means is continued.

  While continuing the first air supply means, the controller 19 compares the first temperature measured by the first temperature sensors 17a to 17h with the set temperature, and the first temperature measured by any one of the first temperature sensors 17a to 17h. Is determined to exceed the set temperature (S-13). In step 13 (S-13), when the first temperature is within the set temperature range, the controller 19 continues the first air supply means while maintaining the output (air blowing capacity) of the air blowing fan 28 (S-). 14). The controller 19 transmits an output maintaining signal for maintaining the air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 maintains the output of the blower fan 28 according to the output maintenance signal from the controller 19.

  The controller 19 determines whether stop of the air-conditioning operation of the information processing equipment room air-conditioning system 10A is instructed while the first air supply means is being continued in step 14 (S-14) (S-15). The controller 19 monitors whether or not the first temperature exceeds the set temperature in step 13 (S-13) while continuing the first air supply means unless a stop is instructed, and the procedure from step 13 (S-13). repeat. When the stop is instructed, the controller 19 stops the air conditioning operation, and the information processing equipment room air conditioning system 10A stops.

  In step 13 (S-13), when it is determined that the first temperature has exceeded the set temperature, the controller 19 increases the output of the blower fan 28 compared to when the first temperature is within the set temperature range (for example, The current output of the blower fan 28 is increased by 5 to 10%) to increase the amount of cool air supplied from the blowing unit 18a, and the first air supply means is continued in this state (S-16).

  The controller 19 transmits an output instruction signal corresponding to the increased air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal from the controller 19, increases the output, and then maintains the output.

  When the first temperature exceeds the set temperature in the first air supply means, the temperature of the server mounted in the server rack (13g, 13f and 13g, or 13e to 13g) has risen, and the blower fan 28 When the first temperature is within the set temperature range as compared with the case where the first temperature is within the set temperature range by increasing the output of the air and increasing the amount of cool air supplied from the blow-out unit 18a Since a larger amount of cool air is supplied to the server racks (13g, 13f and 13g, or 13e to 13g), the server racks (13g, 13f and 13g, or 13e to 13g) are supplied. The mounted server can be reliably cooled, and failure of an operating server whose temperature has risen can be prevented.

  The controller 19 compares the first temperature with the set temperature while continuing the first air supply means with the increased air volume, and determines whether the first temperature is equal to or lower than the set temperature (S-17). In step 17 (S-17), when the first temperature exceeds the set temperature, the controller 19 further increases the output of the blower fan 28 increased in step 16 (S-16) (for example, step 16 ( The output of the blower fan 28 increased in S-16) is further increased by 5 to 10%), and the first air supply means is continued in this state (S-18), and the first in step 17 (S-17). Monitor if the temperature is below the set temperature.

  The controller 19 transmits an output instruction signal corresponding to the increased air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal from the controller 19 and further increases the output, and then maintains the output.

  When it is determined in step 17 (S-17) that the first temperature has become equal to or lower than the set temperature, the controller 19 maintains the increased air volume when the first temperature exceeds the set temperature, while increasing the air volume (increase). Cool air of the amount of air that has been kept) is supplied from the blowing unit 18a, and the first air supply means is continued (S-19). The controller 19 transmits an output maintaining signal for maintaining the air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 maintains the output of the blower fan 28 according to the output maintenance signal from the controller 19.

  In the first air supply means, when the first temperature is equal to or lower than the set temperature, the air volume is supplied from the blowing unit 18a while maintaining the increased air volume when the first temperature exceeds the set temperature. Thus, it is possible to prevent the temperature of the server that has been mounted on the server rack (13g, 13f and 13g, or 13e to 13g) from being lowered, and to keep the lowered server temperature. it can.

  The controller 19 determines whether stop of the air-conditioning operation of the information processing equipment room air-conditioning system 10A is instructed while continuing the first air supply means in step 19 (S-19) (S-20). Unless the stop is instructed, the controller 19 continues the first air supply means while maintaining the increased air volume when the first temperature exceeds the set temperature (S-21), and step 20 (S-20). ), Whether or not to stop the air conditioning operation of the information processing equipment room air conditioning system 10A is monitored. When the stop is instructed, the controller 19 stops the air conditioning operation, and the information processing equipment room air conditioning system 10A stops.

  FIG. 19 is a side view similar to FIG. 1 for explaining an example of the second air supply means, and FIG. 20 is a front view similar to FIG. 2 for explaining an example of the second air supply means. In FIG. 19, illustration of the controller 19 is omitted, and the second air supply means will be described by illustrating only the air conditioner 16a and the blowing unit 18a. In FIG. 20, the first to third air guide mechanisms 46a to 46c and the underfloor air guide mechanism 53 are not shown.

  In FIG. 19, when a server is mounted from the server rack 13g located in the front area 20, the servers are mounted in the second to seventh server racks 13b to 13g, and the mounting rate is about 85.7%. . Therefore, the mounting rate (85.7%) exceeds the set rate (50%), and the mounting rate exceeds the set rate. When the mounting rate (85.7% and mounting position information) is input by the input device, the controller 19 reads the mounting rate, the set rate, and the set temperature from the storage device (S-10), and step 11 (S-11). ), The mounting rate (85.7%) and the setting rate (50%) are compared to determine whether the mounting rate is lower than the setting rate.

  When the controller 19 determines that the mounting rate (85.7%) exceeds the set rate (50%), the controller 19 supplies cool air from the air conditioner 16a to the underfloor space 32 and mounts the server from the blowout unit 18a. The 2nd air supply means which supplies cold air toward the cold aisle 14 in which 13b-13g is located is implemented (S-22). The second air supply means is implemented until the mounting rate reaches 100% from the set rate.

  The controller 19 uses the second air supply means to cool air supplied from the air outlet unit 18a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. Is adjusted to 50%, for example, and the air volume of the cool air supplied to the underfloor space 32 is adjusted to 50%, for example.

  The controller 19 transmits an opening degree instruction signal corresponding to the air volume of 50% to the control unit of the first motor damper 31. The control unit of the first motor damper 31 matches the opening degree with that of the opening degree instruction signal in accordance with the opening degree instruction signal from the controller 19 and maintains the opening degree corresponding to the air volume of 50%. In the second air supply means, by adjusting the opening degree of the first motor damper 31, the air volume of the cold air supplied from the blow-out unit 18a is changed according to the mounting rate of the servers in the server racks 13a to 13g. The opening degree of the motor damper 31 according to the mounting rate of the server can be arbitrarily set.

  The controller 19 transmits an output instruction signal corresponding to the air volume of 50% to the control unit of the blower fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 according to the output instruction signal from the controller 19 and maintains the output corresponding to the air volume 50%. In the second air supply means, by adjusting the output of the blower fan 28, the air volume of the cool air supplied from the blowout unit 18a is changed according to the server mounting rate on the server racks 13a to 13g. The output of the blower fan 28 according to the server mounting rate can be set arbitrarily.

  In the blowing unit 18a, the first to third wind speed adjusting dampers 37a to 37d are opened. The first to third air guide mechanisms 46 a to 46 c are already suspended from the ceiling 51. The moving path of the cold air supplied from the first blowing unit 18a via the blower fan 28 is the same as that shown in FIGS.

  The controller 19 transmits an activation signal to the control unit of the second motor damper 33 and transmits an opening degree instruction signal corresponding to the air volume of 50% to the control unit of the motor damper 33. The control unit of the second motor damper 33 activates the motor damper 33 in accordance with the activation signal from the controller 19 and matches the opening degree with that of the opening degree instruction signal in accordance with the opening degree instruction signal from the controller 19 so that the air volume is 50%. Maintain the corresponding opening. In the second air supply means, by adjusting the opening degree of the second motor damper 33, the amount of cool air supplied to the underfloor space 32 is changed according to the mounting ratio of the servers in the server racks 13a to 13g. The opening degree of the motor damper 33 according to the mounting rate of the server can be set arbitrarily.

  The air conditioning system 10A for the information processing equipment room supplies the cool air from the air conditioners 16a to 16c to the under-floor space 32 and mounts the server when the server mounting rate in the server racks 13a to 13g exceeds the set rate range. Since the cold air is supplied from the blowing units 18a to 18c toward the cold aisle 14 where the server racks 13b to 13g are located, when the mounting rate exceeds the set rate and a predetermined number of servers are operated, all of the servers are Cooling can be performed evenly, and failure due to temperature rise of the operating server can be prevented.

  The information processing equipment room air conditioning system 10A adjusts the output of the blower fan 28, the opening degree of the first motor damper 31, and the opening degree of the second motor damper 33, so that the second air supply means according to the mounting rate of the server. Since at least one of the amount of cool air supplied to the underfloor space 32 and the amount of cool air supplied from the blow-out units 18a to 18c is changed, even when the mounting rate exceeds the set rate, The amount of cold air supplied to the space 32 and the amount of cold air supplied from the blow-out units 18a to 18c can be reduced, and the amount of cold air supplied to the under-floor space 32 and the blow-out units 18a to 18a- The amount of cool air supplied from 18c can be increased. Therefore, the servers mounted in the server racks 13a to 13g can be cooled by using the minimum necessary amount of cold air in the second air supply means.

  There is a case where the temperature of the cold aisle 14 rises more than expected depending on the operating status of the server during the second air supply means, and the temperature of the cold aisle 14 exceeds the set temperature range while the second air supply means continues. is there. During the continuation of the second air supply means, the controller 19 compares the first temperature measured by the first temperature sensors 17a to 17h with the set temperature, and the first temperature measured by any one of the first temperature sensors 17a to 17h. Is determined to exceed the set temperature (S-23). In step 23 (S-23), when the first temperature is within the set temperature range, the controller 19 continues the second air supply means while maintaining the output of the blower fan 28 (S-24).

  The controller 19 determines whether or not the stop of the air-conditioning operation of the system 10A is instructed while the second air supply means is continued in step 24 (S-24) (S-25). The controller 19 monitors whether the first temperature exceeds the set temperature in step 23 (S-23) while continuing the second air supply means unless a stop command is issued, and the procedure from step 23 (S-23). repeat. When the stop is instructed, the controller 19 stops the air conditioning operation, and the information processing equipment room air conditioning system 10A stops.

  If it is determined in step 23 (S-23) that the first temperature has exceeded the set temperature, the controller 19 increases the output of the blower fan 28 compared to when the first temperature is within the set temperature range (for example, The output of the current blower fan 28 is increased by 5 to 10%), and at least one of the amount of cool air supplied from the blow-out unit 18a and the amount of cool air supplied to the underfloor space 23 is increased, and in this state, the second The air supply means is continued (S-26).

  The controller 19 transmits an output instruction signal corresponding to the increased air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal from the controller 19, increases the output, and then maintains the output.

  When the first temperature exceeds the set temperature in the second air supply means, the temperature of the server mounted in the server racks 13b to 13g is increased, the output of the blower fan 28 is increased, and air is supplied from the blowout unit 18a. Compared to the case where the first temperature is within the set temperature range by increasing the air volume of the cool air to be supplied and the air volume of the cool air to be supplied to the underfloor space 32 than when the first temperature is within the set temperature range. Since a large amount of cool air is supplied to the server racks 13b to 13g, the servers mounted in the server racks 13b to 13g can be reliably cooled, and a server failure with an increased temperature can be prevented. .

  The controller 19 compares the first temperature with the set temperature while continuing the second air supply means with the air volume increased, and determines whether the first temperature is equal to or lower than the set temperature (S-27). In step 27 (S-27), when the first temperature exceeds the set temperature, the controller 19 further increases the output of the blower fan 28 increased in step 26 (S-26) (for example, in step 26 (S-27)). The output of the blower fan 28 increased in S-26) is further increased by 5 to 10%), and the second air supply means is continued in that state (S-28), and the first in step 27 (S-27). Monitor if the temperature is below the set temperature.

  The controller 19 transmits an output instruction signal corresponding to the increased air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal from the controller 19 and further increases the output, and then maintains the output.

  If it is determined in step 27 (S-27) that the first temperature has become equal to or lower than the set temperature, the controller 19 maintains the increased air volume when the first temperature exceeds the set temperature, while increasing the air volume (increase). Cool air of the same amount) is supplied from the blowing unit 18a and the second air supply duct 30, and the second air supply means is continued (S-29). The controller 19 transmits an output maintaining signal for maintaining the air volume to the control unit of the blower fan 28. The control unit of the blower fan 28 maintains the output of the blower fan 28 according to the output maintenance signal from the controller 19.

  In the second air supply means, when the first temperature becomes lower than the set temperature, the air volume that is increased when the first temperature exceeds the set temperature is maintained, and the cool air of the air volume is supplied to the blow unit 18a and the second air supply. By supplying air from the air duct 30, it is possible to prevent the temperature of the server mounted on the server racks (13b to 13g) from being lowered and the temperature from being lowered, and to maintain the lowered server temperature.

  The controller 19 determines whether or not the stop of the air-conditioning operation of the system 10A is instructed while the second air supply means is continued in step 29 (S-29) (S-30). Unless the stop is instructed, the controller 19 continues the second air supply means while maintaining the increased air volume when the first temperature exceeds the set temperature (S-31), and step 30 (S-30). ), Whether or not to stop the air conditioning operation of the information processing equipment room air conditioning system 10A is monitored. When the stop is instructed, the controller 19 stops the air conditioning operation, and the information processing equipment room air conditioning system 10A stops.

  21 is a side view similar to FIG. 1 for explaining another example of the first air supply means, and FIG. 22 is a front view similar to FIG. 2 for explaining another example of the first air supply means. is there. 21 and 22, the controller 19 is not shown, and only the air conditioner 16a and the blowout unit 18a are illustrated to explain the first air supply means.

  In the air conditioning system 10B for the information processing equipment room, the server is mounted from the first server rack 13a located in the rear area 22 of the cold aisle 14 at a short distance close to the blowing units 18a to 18c (air conditioners 16a to 16c). When the mounting rate is lower than the preset setting rate, the first air supply means is implemented. In the information processing equipment room air conditioning system 10B, when a server is mounted from the first server rack 13a located in the rear area 22 toward the seventh server rack 13g located in the front area 20, the mounting rate exceeds the set rate. The 2nd air supply means is implemented.

  In the air conditioning system 10B for the information processing equipment room, first to third air guide mechanisms 46a to 46c (first to nth) are provided at predetermined locations on the ceiling 51 extending between the central area 21 and the rear area 22 of the cold aisle 14. A wind guide mechanism) is installed. Further, an underfloor air guiding mechanism 53 (wind direction plate) is installed in the underfloor space 32 located on the front area 20 side of the cold aisle 14. The underfloor air guiding mechanism 53 hangs from the floor 52 toward the underfloor space 32.

  The first air guide mechanism 46a (see FIGS. 5 and 6) is installed on the ceiling 51 of the central area 21 of the cold aisle 14 so as to be able to turn, and hangs down from the ceiling 51 when used. The second air guide mechanism 46b (see FIGS. 7 and 8) is installed on the ceiling 51 between the rear area 22 of the cold aisle 14 and the central area 21 so as to be pivotable, and hangs down from the ceiling 51 when used. The third air guide mechanism 46c (see FIGS. 9 and 10) is installed on the ceiling 51 on the side of the rear area 22 of the cold aisle 14 so as to be able to turn, and hangs down from the ceiling 51 when used.

  In FIG. 21, the servers are mounted on the entire first and second server racks 13a and 13b and approximately half of the third server rack 13c, and the server mounting ratio with respect to the entire server racks 13a to 13g is about 35.7%. Yes, the mounting rate (about 35.7%) is lower than the set rate (55%). The controller 19 stores the input mounting rate (about 35.7% and mounting position information), setting rate (for example, 55% from the range of 45 to 55%), and set temperature. Read from the device (S-10), compare the mounting rate with the set rate, and determine whether the mounting rate is lower than the set rate (S-11).

  The controller 19 determines that the server mounting rate is lower than the set rate, and the first to third server racks 13a to 13a mounted with the server from the blowing unit 18a without supplying cool air from the air conditioner 16a to the underfloor space 32. First air supply means for supplying cold air toward the cold aisle 14 where 13c is located is implemented (S-12). The controller 19 uses the first air supply means to cool air supplied from the air outlet unit 19a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. For example, the air volume is adjusted to 35%.

  The control unit of the blower fan 28 starts the blower fan 28 in accordance with the start signal from the controller 19, and performs inverter control on the output of the blower fan 28 in accordance with the output instruction signal corresponding to the air volume 35% from the controller 19. The output corresponding to 35% of the cool air supplied from the unit 18a is maintained.

  The control unit of the first motor damper 31 activates the motor damper 31 according to the activation signal from the controller 19 and matches the opening to that of the opening instruction signal according to the opening instruction signal corresponding to 35% of the air volume from the controller 19. And the opening degree corresponding to the air volume 35% of the cold air supplied from the blowing unit 19a is maintained.

  The controller 19 transmits an ON signal (open signal) to the automatic opening / closing devices of the third and second air guide mechanisms 46b and 46c. The automatic switchgear turns the air guide mechanisms 46 b and 46 c downward from the ceiling 51 in accordance with the ON signal transmitted from the controller 19. As a result, the air guide mechanisms 46b and 46c hang down from the ceiling 51.

  As shown in FIG. 21, the cool air supplied from the air conditioner 16a travels from the lower and middle second and third outlets 41b and 41c to the central area 21 and the rear area 22 of the cold aisle 14 as shown in FIG. To be fed forward. When the cold wind reaches these areas 21 and 22, it collides with the wind direction plate 47 of the second and third air guide mechanisms 46b and 46c, and its traveling direction is changed from the front-rear direction to the lower direction, and the first to third servers. It is guided toward the racks 13a to 13c.

  The cool air directed toward the first to third server racks 13a to 13c flows into the first to third server racks 13a to 13c from the side of the first to third server racks 13a to 13c, and the first to third servers. The servers mounted in the first to third server racks 13a to 13c are cooled while flowing through the racks 13a to 13c. The movement path of the supplied cool air flowing through the first to third server racks 13a to 13c is the same as that shown in FIGS.

  In the system 10B shown in FIG. 22, servers are mounted on the entire first to third server racks 13a to 13c and about １ ／ of the fourth server rack 13d, and the mounting rate is about 47.1%. The rate (47.1%) is below the set rate (55%). The controller 19 reads the input mounting rate, setting rate, and setting temperature from the storage device (S-10), compares the mounting rate with the setting rate, and determines whether the mounting rate is below the setting rate (S -11).

  The controller 19 determines that the server mounting rate is below the set rate range, and the first to fourth server racks mounted with the server from the blowout unit 18a without supplying cool air from the air conditioner 16a to the underfloor space 32. First air supply means for supplying cold air toward the cold aisle 14 where 13a to 13d are located is implemented (S-12). The controller 19 uses the first air supply means to cool air supplied from the air outlet unit 19a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. For example, the air volume is adjusted to 43%.

  The control unit of the first motor damper 31 matches the opening degree with that of the opening degree instruction signal according to the opening degree instruction signal corresponding to the air volume 43% from the controller 19, and sets the air volume 43% of the cool air supplied from the blowing unit 19a. Maintain the corresponding opening. The control unit of the blower fan 28 performs inverter control on the output of the blower fan 28 according to the output instruction signal corresponding to the air volume 43% from the controller 19, and outputs an output corresponding to the cool air volume 43% supplied from the blowing unit 18a. maintain.

  The controller 19 transmits an ON signal (open signal) to the automatic opening / closing device of the first air guide mechanism 46a. The automatic opening / closing device turns the air guide mechanism 46 a downward from the ceiling 51 in accordance with the ON signal transmitted from the controller 19. As a result, the air guide mechanism 46 a hangs down from the ceiling 51. Note that the air guide mechanisms 46b and 46c are already suspended from the ceiling 51.

  As shown in FIG. 22, the cold air supplied from the air conditioner 16 a passes through the upper, middle, and lower stages of the first to third outlets 41 a to 41 c in the central area 21 and the rear area 22 of the cold aisle 14. It is fed forward toward When the cold wind reaches these areas 21 and 22, it collides with the wind direction plate 47 of the first to third air guide mechanisms 46a to 46c, and its traveling direction is changed from the front-rear direction to the lower direction, and the first to fourth servers. It is guided toward the racks 13a to 13d.

  The cool air toward the first to fourth server racks 13a to 13d flows into the first to fourth server racks 13a to 13d from the side of the first to fourth server racks 13a to 13d, and the first to fourth servers. The servers mounted in the first to fourth server racks 13a to 13d are cooled while flowing through the racks 13a to 13d. The movement path of the supplied cool air flowing through the first to fourth server racks 13a to 13d is the same as that shown in FIGS.

  In the information processing equipment room air conditioning system 10B, when the server mounting rate in the server racks 13a to 13g is lower than the set rate, the server is mounted without supplying cool air from the air conditioners 16a to 16c to the underfloor space 32. Since the first air supply means for supplying cold air from the blowing units 18a to 18c toward the cold aisle 14 where the server racks (13a to 13c or 13a to 13d) are located, the server racks (13a to 13c, Alternatively, not only the servers mounted in 13a to 13d) can be cooled, but also cold air is not supplied to the server racks (13d to 13f or 13e to 13f) in which no servers are mounted. The cool air used for cooling the server can be minimized, and the cool air conditioners 16a to 16c that are not used for cooling the server are used. It is possible to prevent the air supply Luo.

  In the information processing equipment room air conditioning system 10B, cold air is supplied only to the cold aisle 14 in which the server racks (13a to 13c or 13a to 13d) in which the servers are mounted using the blowing units 18a to 18c are located. Therefore, when the server is cooled, the air-conditioners 16a to 16c do not consume more than the necessary amount of cool air blowing energy, and energy saving in the system 10A can be achieved.

  The information processing equipment room air conditioning system 10B adjusts the opening degree of the first motor damper 31 and the output of the blower fan 28, thereby supplying air from the blow-out units 18a to 18c in the first air supply unit according to the mounting rate of the server. Since the amount of cool air to be changed is changed, the amount of cool air supplied from the blow-out units 18a to 18c can be reduced when the mounting rate is low, and the cool air supplied from the blow-out units 18a to 18c as the mounting rate increases. The air volume can be increased. Therefore, the servers mounted in the server racks 13e to 13g can be cooled by using the minimum necessary amount of cold air in the first air supply means.

  While continuing the first air supply means, the controller 19 compares the first temperature measured by the first temperature sensors 17a to 17h with the set temperature, and determines whether the first temperature exceeds the set temperature range (S). -13). When 1st temperature exists in the range of preset temperature, the controller 19 continues a 1st air supply means in the state which maintained the output (blowing capability) of the ventilation fan 28 (S-14).

  The controller 19 determines whether stop of the air-conditioning operation of the information processing equipment room air-conditioning system 10B is instructed while continuing the first air supply means in step 14 (S-14) (S-15). The controller 19 repeats the procedure from step 13 (S-13) while continuing the first air supply means when the stop is not commanded, and stops the air-conditioning operation when the stop is commanded.

  When the controller 19 determines in step 13 (S-13) that the first temperature has exceeded the set temperature, the controller 19 increases the output of the blower fan 28 compared to when the first temperature is within the set temperature range (for example, the current temperature). The output of the blower fan 28 is increased by 10 to 20%), and the first air supply means is continued in this state (S-16).

  When the first temperature exceeds the set temperature in the first air supply means, the temperature of the server mounted in the server rack (13a to 13c or 13a to 13d) is increased, and the output of the blower fan 28 is increased. By increasing the air volume of the cool air supplied from the blow-out unit 18a, the cool air having a larger air volume than when the first temperature is within the set temperature range is supplied to the server racks (13a-13c or 13a- 13d), the servers mounted in the server racks (13a to 13c or 13a to 13d) can be reliably cooled, and failure of the operating server whose temperature has increased can be prevented. .

  The controller 19 compares the first temperature with the set temperature while continuing the first air supply means with the increased air volume, and determines whether the first temperature is equal to or lower than the set temperature (S-17). When the first temperature is higher than the set temperature, the controller 19 further increases the output of the blower fan 28 increased in step 16 (S-16) (for example, the blower increased in step 16 (S-16)). The output of the fan 28 is further increased by 10 to 20%), and in this state, the first air supply means is continued (S-18), and in step 17 (S-17), it is monitored whether the first temperature is lower than the set temperature. To do.

  When it is determined in step 17 (S-17) that the first temperature has become equal to or lower than the set temperature, the controller 19 maintains the increased air volume when the first temperature exceeds the set temperature, while increasing the air volume (increase). Cool air of the amount of air that has been kept) is supplied from the blowing unit 18a, and the first air supply means is continued (S-19).

  In the first air supply means, when the first temperature is equal to or lower than the set temperature, the air volume is supplied from the blowing unit 18a while maintaining the increased air volume when the first temperature exceeds the set temperature. Thus, it is possible to prevent the temperature of the server that has been mounted on the server racks (13a to 13c or 13a to 13d) from being lowered and the temperature of the server has been lowered, and to maintain the lowered temperature of the server.

  The controller 19 determines whether stop of the air-conditioning operation of the information processing equipment room air-conditioning system 10B is instructed while continuing the first air supply means in step 19 (S-19) (S-20). The controller 19 continues the first air supply means while maintaining the increased air volume when the first temperature exceeds the set temperature unless a stop command is issued (S-21). The air conditioning operation is stopped, and the information processing equipment room air conditioning system 10B stops.

  FIG. 23 is a side view similar to FIG. 1 for explaining another example of the second air supply means. In FIG. 23, illustration of the controller 19 is omitted, and only the air conditioner 16a and the blowout unit 18a are illustrated to describe the second air supply means. In FIG. 23, when the servers are mounted from the server rack 13a located in the rear area 22, the servers are mounted on the entire first to fifth server racks 13a to 13e and approximately 2/3 of the sixth server rack 13f. The mounting rate is about 80.8%. Therefore, the mounting rate (about 80.8%) exceeds the set rate (55%), and the mounting rate exceeds the set rate.

  The controller 19 reads the input mounting rate (about 80.8% and mounting position information), the set rate (55%), and the set temperature from the storage device (S-10), and compares the mount rate and the set rate. Then, it is determined whether the mounting rate is lower than the set rate (S-11). The controller 19 determines that the server mounting rate exceeds the set rate, and supplies cold air from the air conditioner 16a to the underfloor space 32, and the cold aisle in which the server racks 13a to 13f mounting the server from the blowout unit 18a are located. The 2nd air supply means which supplies cold air toward 14 is implemented (S-22).

  The controller 19 uses the second air supply means to cool air supplied from the air outlet unit 18a when the total air volume of the air supplied from the air outlet unit 18a and the air supplied to the underfloor space 32 is 100%. Is adjusted to 55%, for example, and the air volume of the cool air supplied to the underfloor space 32 is adjusted to 55%, for example.

  The control unit of the first motor damper 31 matches the opening degree with that of the opening degree instruction signal in accordance with the opening degree instruction signal corresponding to the air volume 55% from the controller 19 and maintains the opening degree corresponding to the air volume 55%. The control unit of the blower fan 28 controls the output of the blower fan 28 according to the output instruction signal corresponding to the air volume 55% from the controller 19 and outputs the output corresponding to 55% of the cool air supplied from the blowing unit 18a. maintain.

  In the blowing unit 18a, the first to third wind speed adjusting dampers 37a to 37d are opened. The first to third air guide mechanisms 46 a to 46 c are already suspended from the ceiling 51. The moving path of the cold air supplied from the first blowing unit 18a via the blower fan 28 is the same as that shown in FIG.

  The controller 19 transmits an activation signal to the control unit of the second motor damper 33 and transmits an opening degree instruction signal corresponding to 55% of the air volume to the control unit of the motor damper 33. The control unit of the second motor damper 33 activates the motor damper 33 according to the activation signal from the controller 19 and matches the opening degree with that of the opening degree instruction signal according to the opening degree instruction signal from the controller 19 so that the air volume is 55%. Maintain the corresponding opening.

  The air conditioning system 10B for the information processing equipment room supplies the cool air from the air conditioners 16a to 16c to the underfloor space 32 and mounts the server when the server mounting rate in the server racks 13a to 13g exceeds the set rate range. Since the cold air is supplied from the blowing units 18a to 18c toward the cold aisle 14 where the server racks 13a to 13f are located, when the mounting rate exceeds the set rate and a predetermined number of servers are operated, all of the servers are Cooling can be performed evenly, and failure due to temperature rise of the operating server can be prevented.

  The air conditioning system 10B for the information processing equipment room adjusts the output of the blower fan 28 and the opening degree of the first and second motor dampers 31 and 33, so that the underfloor space 32 according to the mounting rate of the server in the second air supply means. Since at least one of the amount of cool air supplied to the air and the amount of cool air supplied from the blow-out units 18a to 18c is changed, even if the mounting rate exceeds the set rate, The amount of cool air to be supplied and the amount of cool air to be supplied from the blow-out units 18a to 18c can be reduced, and the amount of cool air to be supplied to the underfloor space 32 and the supply from the blow-out units 18a to 18c as the mounting rate increases. It is possible to increase the amount of cool air to be noticed. Therefore, the servers mounted in the server racks 13a to 13g can be cooled by using the minimum necessary amount of cold air in the second air supply means.

  During the continuation of the second air supply means, the controller 19 compares the first temperature measured by the first temperature sensors 17a to 17h with the set temperature, and determines whether the first temperature has exceeded the set temperature (S-23). ). When the first temperature is within the set temperature range, the controller 19 continues the second air supply means while maintaining the output of the blower fan 28 (S-24).

  The controller 19 determines whether or not the stop of the air conditioning operation of the system 10B is instructed while the second air supply means is continued in step 24 (S-24) (S-25). The controller 19 repeats the procedure from Step 23 (S-23) while continuing the second air supply means when the stop is not instructed, and stops the air-conditioning operation when the stop is instructed. The air conditioning system 10B is stopped.

  If it is determined in step 23 (S-23) that the first temperature has exceeded the set temperature, the controller 19 increases the output of the blower fan 28 (for example, the current temperature) than when the first temperature is within the set temperature range. The output of the blower fan 28 is increased by 10 to 20%), and at least one of the amount of cool air supplied from the blowout unit 18a and the amount of cool air supplied to the underfloor space 23 is increased, and the second supply is performed in this state. The gas means is continued (S-26).

  When the first temperature exceeds the set temperature in the second air supply means, the temperature of the server mounted in the server racks 13a to 13f is increased, the output of the blower fan 28 is increased, and air is supplied from the blowout unit 18a. By increasing the amount of cool air to be supplied and the amount of cool air to be supplied to the underfloor space 32, a larger amount of the cool air is supplied to the server racks 13a to 13f than when the first temperature is within the set temperature range. Therefore, it is possible to reliably cool the servers mounted in the server racks 13a to 13f, and it is possible to prevent a failure of the server whose temperature has increased.

  The controller 19 compares the first temperature with the set temperature while continuing the second air supply means with the air volume increased, and determines whether the first temperature is equal to or lower than the set temperature (S-27). When the first temperature is higher than the set temperature, the controller 19 further increases the output of the blower fan 28 increased in step 26 (S-26) (for example, the blower increased in step 26 (S-26)). The output of the fan 28 is further increased by 10 to 20%), and in this state, the second air supply means is continued (S-28), and in step 27 (S-27), it is monitored whether the first temperature is lower than the set temperature. To do.

  If it is determined in step 27 (S-27) that the first temperature has become equal to or lower than the set temperature, the controller 19 maintains the increased air volume when the first temperature exceeds the set temperature, while maintaining the air volume ( Cool air of the increased air volume) is supplied from the blowing unit 18a and the second air supply duct 30, and the second air supply means is continued (S-29).

  In the second air supply means, when the first temperature becomes lower than the set temperature, the air volume that is increased when the first temperature exceeds the set temperature is maintained, and the cool air of the air volume is supplied to the blow unit 18a and the second air supply. By supplying air from the air duct 30, it is possible to prevent the temperature of the server that has been mounted on the server racks (13a to 13f) and the temperature of the server from decreasing again, and to maintain the decreased temperature of the server.

  The controller 19 determines whether or not the stop of the air-conditioning operation of the system 10B is instructed while the second air supply means is being continued in step 29 (S-29) (S-30). When the stop is not commanded, the controller 19 continues the second air supply means while maintaining the increased air volume when the first temperature exceeds the set temperature (S-31), and when the stop is commanded, The air conditioning operation is stopped, and the information processing equipment room air conditioning system 10B stops.

10A Information processing equipment room air conditioning system 10B Information processing equipment room air conditioning system 11 Data center 12 Air conditioning room (information processing equipment room)
13a to 13g Server rack 14 Cold aisle 15 Hot aisle 16a to 16c Air conditioner 17a to 17h First temperature sensor 18a First blowing unit 18b Second blowing unit 18c Third blowing unit 19 Controller 20 Front end 21 Central portion 22 Rear end 23 Top 24 Draft wall 25 Machine room 28a First blower fan (first blower)
28b Second blower fan (second blower)
29 1st air supply duct 30 2nd air supply duct 31 1st motor damper (1st damper)
32 Underfloor space 33 Second motor damper (second damper)
34 bottom 35 air supply chamber 36a first branch duct 36b second branch duct 36c third branch duct 37a first wind speed adjusting damper (first to nth wind speed adjusting mechanisms)
37b Second wind speed adjusting damper (first to nth wind speed adjusting mechanisms)
37c Third wind speed adjusting damper (first to nth wind speed adjusting mechanisms)
38 Outlet housing 39 Internal space 40a First air inlet (air inlet)
40b Second air inlet (air inlet)
40c Third air inlet (air inlet)
41a 1st air blower outlet (1st-nth air blower outlet)
41b 2nd air blower outlet (1st-nth air blower outlet)
41c 3rd air blower outlet (1st-nth air blower outlet)
42 partition plate 43a 1st air flow path (1st-nth air flow path)
43b 2nd air flow path (1st-nth air flow path)
43c 3rd air flow path (1st-nth air flow path)
44 Bypass duct 46 Bypass damper 46a First air guide mechanism 46b Second air guide mechanism 46c Third air guide mechanism 47 Wind direction plate 48 Support frame (support member)
49 Ventilation port 50 Ceiling space 51 Ceiling 52 Floor 53 Underfloor air guide mechanism

Claims (12)

A plurality of server racks extending in one direction and spaced apart in a crossing direction intersecting with the one direction; a cold aisle positioned between the adjacent server racks and extending in the one direction; and the adjacent server racks And a hot aisle that is located on the opposite side of the cold aisle across the server rack and extends in one direction in parallel with the cold aisle, and an air conditioner that supplies cold air of a predetermined temperature to the cold aisle Cooling air supplied from the air conditioner to the cold aisle and flowing from the cold aisle to the server rack to cool the server mounted on the server rack. In the air conditioning system for processing equipment room,
The air conditioner is disposed above the server rack, and a central area of the cold aisle at a medium distance from the rear area of the cold aisle at a short distance to the air conditioner and the air conditioner. A blowing unit for supplying cold air in one direction toward the front area of the cold aisle at a long distance to the machine is connected, and in the air conditioning system, the server mounting rate in the server rack is preset. First air supply for supplying cool air from the blow-out unit toward the cold aisle where the server rack on which the server is mounted is located without lowering the cool air from the air conditioner to the underfloor space when the set rate is below When the server mounting rate in the server rack exceeds the set rate, the cool air is blown from the blowing unit toward the cold aisle. Air supply and with an information processing equipment room air-conditioning system which comprises carrying out the second air supply means for supply of cold air to the underfloor space from the air conditioner.   In the air conditioning system, after the server is mounted at an arbitrary position of the server rack located in the cold aisle, the first air supply unit is implemented, and the front area of the cold aisle from the arbitrary position of the server rack, The information processing equipment room air conditioning system according to claim 1, wherein when the server is mounted toward either the central area or the rear area and the mounting rate exceeds the set rate, the second air supply unit is implemented. .   The air conditioner has a first damper that adjusts the amount of cool air supplied to the blow-out unit, and a second damper that adjusts the amount of cool air supplied to the underfloor space, and the first air supply means Then, by adjusting the opening degree of the first damper, the amount of cold air supplied from the blowing unit is changed according to the mounting rate of the server to the server rack, and the second air supply means By adjusting the opening degree of the first and second dampers, the amount of cool air supplied from the blowout unit and the amount of cool air supplied to the underfloor space according to the mounting rate of the server in the server rack are obtained. The information processing equipment room air conditioning system according to claim 1 or claim 2 to be changed.   The air conditioner has at least one blower that sends cold air to the underfloor space and the blow-out unit, and the first air supply means adjusts the air volume of the blower, thereby providing a server to the server rack. According to the mounting rate of the server, the air volume of the cool air supplied from the blow-out unit is changed, and the second air supply means adjusts the air volume of the blower, so that the air volume of the server is adjusted according to the server mounting rate. The air conditioning system for an information processing equipment room according to any one of claims 1 to 3, wherein an air volume of cool air supplied from the blowout unit and an air volume of cold air supplied to the underfloor space are changed.   The air conditioning system includes a first temperature sensor installed in the server rack extending to the cold aisle and measuring a first temperature of the cold aisle. In the first air supply means, the first temperature sensor measures The first temperature is compared with a preset temperature, and when the first temperature exceeds the preset temperature, the air volume of the blower is increased more than when the first temperature is within the preset temperature range. The amount of cool air supplied from the blowing unit is increased, and when the first temperature falls below the set temperature, the increased amount of air is maintained when the first temperature exceeds the set temperature. However, when the cool air of the maintained air volume is supplied from the blow-out unit, and the second air supply means, when the first temperature exceeds the set temperature, the first temperature is within the set temperature range. And increasing at least one of the amount of cool air supplied from the blowing unit and the amount of cool air supplied to the underfloor space, and the first temperature is equal to or lower than the set temperature. When the first temperature is higher than the set temperature, the maintained air volume is maintained when the first air temperature exceeds the set temperature, and the maintained cool air volume is supplied from the blow-out unit and the underfloor space. 4. The air conditioning system for an information processing equipment room according to any one of 4.   The blow-out unit includes air inlets, first to n-th air outlets arranged in the vertical direction and opening toward the one direction, and first to first extending from the air inlet to the air outlets. n air flow paths, and first to nth wind speed adjustment mechanisms that are installed in the air flow paths and adjust the wind speed of the cold air passing through the air flow paths, the air conditioning system uses these wind speed adjustment mechanisms. And adjusting the speed of the cool air supplied from the first to n-th air outlets to allow the cool air supplied from the outlets to reach the target location of the cold aisle. The air conditioning system for information processing equipment rooms described in 1.   In the air conditioning system, cold air is supplied from an outlet located in an upper stage of the first to n-th air outlets to a front area of the cold aisle at a distance from the position of the outlet unit, The cold aisle is supplied at a short distance from the position of the blowout unit while supplying cold air from the blowout outlet located in the middle of the first to nth air blowout outlets to the central area from the position to the cold aisle The air conditioning system for an information processing equipment room according to claim 6, wherein cold air is supplied from an outlet located in a lower stage of the first to n-th air outlets to a rear area of the air conditioner.   The air conditioning system includes a wind guide mechanism installed at a predetermined location on the ceiling of the cold aisle. In the air conditioning system, the cold wind supplied from the blowing unit using the wind guide mechanism is supplied to the cold aisle. The air conditioning system for an information processing equipment room according to any one of claims 1 to 7, wherein the air conditioning system is guided to a target location.   In the air conditioning system, the first to nth air guide mechanisms that guide the cool air to the target locations in the rear area, the central area, and the front area of the cold aisle are installed on the cold aisle ceiling in a state of being aligned in the one direction. The air conditioning system for an information processing equipment room according to claim 8, wherein at least one of the first to nth air guide mechanisms is turned on in order to guide cool air to the target location.   The first to nth air guide mechanisms are formed of a wind direction plate extending in the vertical direction and a support member extending in the vertical direction and slidably supporting the wind direction plate. The air conditioning system for an information processing equipment room according to claim 9, wherein the wind direction plate hangs down from the ceiling in the ON state of the 1st to nth wind guide mechanisms.   The cold air supplied from the blow-out unit is directed along the cold aisle ceiling to the target location of the cold aisle by the Coanda effect, and along the wall that partitions the cold aisle and the hot aisle by the Coanda effect. The air conditioning system for an information processing equipment room according to any one of claims 1 to 10, wherein the air conditioning system is directed toward a target location of the cold aisle. The setting rate is set in a range of 45 to 55% when the server is mounted in all of the server racks as 100%. In the air conditioning system, the mounting rate is 1% to 45 to 55. 12. The first air supply means is implemented until it reaches%, and the second air supply means is implemented until the mounting rate reaches from 45% to 55% to 100%. An air conditioning system for an information processing equipment room according to any one of the above.

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