JP6425430B2 - 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, which cools a plurality of servers accommodated in server racks of the information processing equipment room and prevents the failure of the servers.

  In the information processing equipment room (for example, data center), the servers generate heat by operation of a plurality of servers housed in the server rack installed in the air conditioning room, and the temperature of the servers rises to cause the failure of the server It is necessary to cool the server by the air conditioner. The air conditioning system for information processing equipment room that cools those servers in the information processing equipment room is located between a plurality of server racks installed in the air conditioning room of the information processing equipment room and extending in the front-rear direction and the adjacent server racks. A cold aisle extending in the longitudinal direction, a hot aisle between the adjacent server racks and opposite to the cold aisle across the server rack and extending in the longitudinal direction parallel to the cold aisle, and an information processing equipment room An air conditioning system having an air conditioner installed in an air conditioning room of

  In this air conditioning system, cold air cooled to a predetermined temperature by the air conditioner is supplied from the air conditioner to the underfloor space of the air conditioning room, and the cold air flows through the underfloor space into the cold aisle, and the cold air flows from the cold aisle While flowing through the server rack, cool the servers housed in the server rack. The cold air that has cooled the server changes to warm air that has absorbed the heat of the server, and the warm air flows from the server rack into the hot aisle, flows from the hot aisle into the ceiling space of the air conditioning room, and passes through the ceiling space again. 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.

  There has been disclosed an air conditioning system in which a plurality of local cooling devices arranged in the front and back direction are installed above the ceiling of the cold aisle in order to reliably cool those servers accommodated in server racks such as communication equipment rooms (Patent Document 1). In this air conditioning system, the cold air supplied from the air conditioner to the space below the floor flows upward from below the server rack to cool the server accommodated in the rack, and the warm air that has absorbed the heat of the server above the server rack Flows out into the local cooling system and into the air conditioner. The warm air that has flowed into the local cooling device is cooled by the local cooling device and turned into cold air, and the cold air flows through the cold aisle from the top to the bottom while flowing into the rack from the side of the server rack and into the server rack Cool the housed server.

JP, 2009-133617, A

  In an air conditioning system in which cold air is supplied to the cold aisle from the underfloor space and warm air that absorbs the heat of the server is returned to the air conditioner from the ceiling space, the server operating condition while supplying cold air from the underfloor space to the cold aisle Although heat accumulation may occur at a predetermined location in the cold aisle, cold air can not be supplied toward the heat accumulation generated in the cold aisle, so the heat accumulation can not be selectively cooled. , Heat accumulation can not be eliminated. If heat buildup exists in the cold aisle, the temperature of the server in the vicinity of the heat buildup can not be reduced, and the server continues to operate in a high temperature state, which causes a failure of the server. In the air conditioning system disclosed in Patent Document 1, the entire cold aisle can be uniformly cooled from above, but it is necessary to install a plurality of local cooling devices and operate all the local cooling devices. Therefore, a large amount of energy is consumed when the server is cooled, and energy saving can not be achieved in the system.

  An object of the present invention is to be able to supply cold air toward heat accumulation generated at a predetermined location of the cold aisle, to selectively cool the heat accumulation and to eliminate heat accumulation. An object of the present invention is to provide an air conditioning system for an information processing equipment room. Another object of the present invention is to reliably cool a server accommodated in a server rack by the cool air supplied to the cold aisle from the underfloor space and the cool air supplied to the heat reservoir, and the server by the temperature rise It is to provide an air conditioning system for information processing equipment room which can prevent the failure of the system. Furthermore, it is possible to reduce the energy used for cooling the server, and to provide an air conditioning system for information processing equipment rooms that can achieve energy saving in the system.

  The premise of the present invention for solving the above problem is that a plurality of server racks extending in one direction and spaced apart in a crossing direction crossing the one direction are located between adjacent server racks in one direction A cold aisle between an extending cold aisle and an adjacent server rack, located on the opposite side of the cold aisle across the server rack, extending in one direction parallel to the cold aisle, and a cold air of a predetermined temperature to the cold aisle A cold air supplied from the air conditioner flows into the cold aisle through the underfloor space, and cool air flows from the cold aisle through the server rack to cool the server accommodated in the server rack. It changes to the warm air which absorbed the heat of the server, and for the information processing room where the warm air flows back from the hot aisle to the air conditioner while flowing from the server rack to the hot aisle A control system.

As a feature of the present invention in the above premise, the air conditioner is arranged above the server rack to supply cool air in one direction from one end of the cold aisle to the other end. The blowout unit is connected , the air conditioning system for the information processing equipment room includes a plurality of first temperature sensors, and the plurality of first temperature sensors are installed on the top of the server rack located on the side of the cold aisle and the cold aisle It is arranged in one direction from one end to the other, measures the first temperature of the cold aisle at the top of the server rack, and is installed in the middle of the server rack located on the side of the cold aisle. Lined in one direction from one end to the other, and measuring the first temperature of the cold aisle in the middle of the server rack, and the side of the cold aisle It is installed on the bottom of the server rack position sequence from one end of the cold aisle in one direction toward the other end, to measure a first temperature in the cold aisle at the bottom of the server rack, information processing equipment chamber In the air conditioning system, while supplying cool air from the underfloor space to the cold aisle, the first temperature measured by those first temperature sensors is compared with the set temperature, and if the first temperature exceeds the set temperature, the first It is determined that heat accumulation is generated in the cold aisle in the vicinity of the first temperature sensor whose temperature has been measured, and cold air is supplied from the blowout unit toward the heat accumulation.

As an example of the present invention, a plurality of first temperature sensors installed at the top of the server rack are equally spaced from one end of the cold aisle toward the other end in one direction, and the server rack A plurality of first temperature sensors installed in an intermediate portion are equally spaced apart in one direction from one end of the cold aisle to the other end, and a plurality of first temperature sensors installed in the bottom of the server rack (1) The temperature sensors are equally spaced in one direction from one end of the cold aisle to the other end, and the first temperature sensor installed at the middle of the server rack is installed at the top of the server rack The first temperature sensor located immediately below the first temperature sensor and located at the bottom of the server rack is located immediately below the first temperature sensor located at the middle of the server rack .

  As another example of the present invention, the air conditioner has a first damper for adjusting the volume of cold air supplied to the blowout unit, and a second damper for regulating the volume of cold air supplied to the underfloor space, In the air conditioning system, when the total volume of the cold air supplied from the air conditioner is 100%, the proportion of the cold air supplied from the blowout unit is in the range of 10 to 30% and the cold air supplied to the underfloor space The opening degree of the first and second dampers is adjusted so that the ratio is in the range of 70 to 90%.

  As another example of the present invention, the air conditioner has at least one blower for sending cold air to the underfloor space and the blowout unit, and the air conditioning system makes 100% of the total volume of the cold air supplied from the air conditioner. The air blowing capacity of the blower is adjusted so that the ratio of cold air supplied to the blowout unit is in the range of 10 to 30% and the ratio of cold air supplied to the underfloor space is in the range of 70 to 90%. Do.

  As another example of the present invention, the blowout unit includes an air inlet, first to nth air outlets aligned vertically and opening in one direction, and air outlets from the air inlet. And the first to n-th wind speed adjusting mechanisms installed in the air flow paths to adjust the wind speed of the cold air passing through the air flow paths, and the air conditioning system adjusts the wind speeds A mechanism is used to adjust the speed of the cold air supplied from the first to n-th air outlets, and to change the reach distance in the cold aisle of the cold air supplied from the outlets.

  As another example of the present invention, in the air conditioning system, cool air is supplied from the air outlet located at the upper stage of the first to n-th air outlets to heat accumulation generated in the cold aisle away from the position of the air outlet unit. And cool air is supplied to the heat accumulation generated in the cold aisle at an intermediate distance from the position of the blowout unit from the blowout port located at the middle stage of the first to nth air blowout ports, and The cold air is supplied to the heat accumulation generated in the cold aisle from the outlet located at the lower end of the first to n-th air outlets.

  As another example of the present invention, the air conditioning system includes a wind guide mechanism installed at a predetermined location on the ceiling of the cold aisle, and in the air conditioning system, cold wind supplied from the blowout unit using the wind guide mechanism. To the heat pool.

  As another example of the present invention, the air guide mechanism is capable of adjusting the extension dimension downward from the ceiling and the extension dimension upward from the top of the server rack, and in the air conditioning system, The downward dimension of the air guide mechanism is adjusted in accordance with at least one of the generation site of the heat accumulation and the temperature of the heat accumulation, and the wind is induced according to at least one of the generation area of the heat accumulation and the temperature of the heat accumulation. Adjust the upward extension of the mechanism.

  As another example of the present invention, in the air conditioning system, a plurality of air guide mechanisms are installed side by side in the cross direction, and the air guide function of the air guide mechanisms is turned on / off according to the location of heat accumulation.

  As another example of the present invention, the wind guiding mechanism is 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.

  As another example of the present invention, the cold air supplied from the blowout unit travels along the ceiling of the cold aisle to the heat accumulation by the Coanda effect, and the cold aisle and the hot aisle are separated by the Coanda effect along the wall. Head for the heat buildup.

  According to the air-conditioning system for an information processing equipment room according to the present invention, the cold air is supplied from the blowout unit toward heat accumulation generated at a predetermined location of the cold aisle while the cold air is supplied from the underfloor space to the cold aisle. Thus, the cold air can be supplied toward the heat accumulation of the cold aisle, the heat accumulation can be selectively cooled, and the heat accumulation can be eliminated. Since the air conditioning system can eliminate the heat accumulation of the cold aisle, the server in the vicinity of the heat accumulation accommodated in the server rack can be cooled, and the temperature rise of the server can be prevented. It can prevent. Since the air conditioning system supplies cold air to the heat accumulation from the blowout unit connected to the air conditioning unit and cools the heat accumulation by it, a plurality of air conditioning systems other than the air conditioning system as disclosed in Patent Document 1 It is not necessary to install a local cooling device, and energy used for cooling the server can be reduced, and energy saving can be achieved in the system.

The air conditioning system for the information processing equipment room is installed at the top of the server rack located on the side of the cold aisle, arranged in one direction from one end of the cold aisle to the other end, and cold at the top of the server rack A plurality of first temperature sensors for measuring the first temperature of the aisle, and an intermediate portion of the server rack located on the side of the cold aisle, in one direction from one end of the cold aisle to the other end A plurality of first temperature sensors that measure the first temperature of the cold aisle in the middle of the server rack, and are installed at the bottom of the server rack located on the side of the cold aisle, from one end of the cold aisle to the other Sort one direction toward the end portion, and a first temperature sensor of the plurality of measuring a first temperature in the cold aisle at the bottom of the server rack, floor sky Cold air to the cold aisle in the air supply from comparing the first temperature to which they first temperature sensor is measured and the set temperature, when the first temperature exceeds the set temperature, the measured the first temperature 1 Since it is determined that heat buildup has occurred in the cold aisle near the temperature sensor, it is possible to accurately detect the heat buildup generated in a predetermined location of the cold aisle using these temperature sensors. Since the air conditioning system supplies cool air to the detected heat accumulation from the blow-out unit, it is possible to selectively cool the detected heat accumulation and to eliminate the heat accumulation.

  The first damper for adjusting the volume of cold air supplied to the blow-out unit, and the second damper for regulating the volume of cold air supplied to the underfloor space, and the total volume of the cold air supplied from the air conditioner is 100 The percentage of cold air supplied from the blow-out unit is in the range of 10 to 30%, and the percentage of cold air supplied to the underfloor space is in the range of 70 to 90%. 2) The air conditioning system for the information processing equipment room that adjusts the opening degree of the damper adjusts the ratio of the cold air supplied to the underfloor space and the blowout unit to the above range by using the first and second dampers. The cold air supplied can cool the entire cold aisle, so that the cold air can flow from the entire cold aisle to the server rack, and the cold air supplied from the blow-out unit can locally generate local air. Thermal reservoir can be cooled, it is possible to eliminate the reservoir the heat. The air conditioning system can eliminate the heat accumulation of the cold aisle by the cold air adjusted to the ratio, so that the server in the vicinity of the heat accumulation accommodated in the server rack can be reliably cooled, and the server in the vicinity of the heat accumulation Can prevent the temperature rise of the Since the air conditioning system can cool the server using only the cooling capacity of the air conditioner and can eliminate heat accumulation, a plurality of local cooling devices as in the air conditioning system disclosed in Patent Document 1 described above It is not necessary to set up, and energy used for cooling the server can be reduced, and energy saving can be achieved in the system.

  The ratio of cool air supplied to the blow-out unit is 10 to 30, provided that there is at least one blower sending cold air to the underfloor space and the blow-out unit, and the total volume of the cold air supplied from the air conditioner is 100%. The air conditioning system for the information processing room, which adjusts the air blowing capacity of the blower so that the ratio of cool air supplied to the underfloor space becomes 70% to 90%, becomes the underfloor space using the blower. And by adjusting the ratio of the cold air supplied to the blowout unit to the above range, it is possible to cool the entire cold aisle by the cold air supplied to the space below the floor, and the cold air is allowed to flow from the entire cold aisle to the server rack. The cold air supplied from the blow-out unit can cool the locally generated heat accumulation and eliminate the heat accumulation. The air conditioning system can eliminate the heat accumulation of the cold aisle by the cold air adjusted to the ratio, so that the server in the vicinity of the heat accumulation accommodated in the server rack can be reliably cooled, and the server in the vicinity of the heat accumulation Can prevent the temperature rise of the Since the air conditioning system can cool the server using only the cooling capacity of the air conditioner and can eliminate heat accumulation, a plurality of air conditioners may be used in addition to the air conditioner as disclosed in the patent document 1 above. It is not necessary to install a local cooling device of a stand, energy used for cooling a server can be decreased, and energy saving can be achieved in the system.

  The speed of cold air supplied from the first to n-th air outlets is adjusted using the first to n-th wind speed adjusting mechanism, and the reach distance of cold air supplied from the outlets in the cold aisle is changed The air conditioning system for an information processing equipment room can freely change the reach distance of cold air supplied from the first to n-th air outlets by using the first to n-th wind speed adjusting mechanisms. Since the cooling air can be reliably supplied to the heat accumulation generated at a predetermined location of the cold aisle, the heat accumulation can be eliminated by selectively cooling the heat accumulation. Since the air conditioning system can eliminate the heat accumulation of the cold aisle by the cold air supplied from the first to n-th air outlets of the blowout unit, it reliably cools the server near the heat accumulation accommodated in the server rack It is possible to prevent the temperature rise of the server near the heat accumulation.

  Cold air is supplied from the air outlet located in the upper stage to the heat reservoir at a long distance from the position of the blowout unit, and cool air is supplied from the air outlet located in the middle stage from the position of the blowout unit to the heat reservoir at an intermediate distance. An air conditioning system for an information processing room that supplies cold air from an air outlet located at a lower position to a heat accumulation at a short distance from the position of the blowout unit is a long-distance heat accumulation or an intermediate heat accumulation generated in a cold aisle Because cold air can be supplied to the heat reservoir at a short distance from the 1st to n-th air outlets of the blowout unit, even if heat accumulation occurs in any part of the cold aisle, the heat accumulation is directed toward that heat accumulation. Cold air can be supplied and the heat accumulation can be cooled to pinpoint to eliminate the heat accumulation.

  An air conditioning system for an information processing room that includes a wind guide mechanism installed at a predetermined location on a ceiling of the cold aisle, and guides the cool air supplied from the blowout unit to the heat reservoir using the wind guide mechanism. The cold air supplied from the blowout unit can be directed to the heat accumulation using the mechanism, so even if the heat accumulation occurs in any part of the cold aisle by changing the installation position of the air guide mechanism. The cold air can be supplied toward the heat accumulation, and the heat accumulation can be selectively cooled to eliminate the heat accumulation.

  The air guide mechanism can adjust the extension dimension from the ceiling downward, and can adjust the extension dimension upward from the top of the server rack, and at least one of the heat accumulation location and the temperature of the heat accumulation An information processing apparatus that adjusts the downward extension dimension of the air guide mechanism and adjusts the upward extension dimension of the air guide mechanism according to at least one of the heat accumulation location and the heat accumulation temperature. For example, when the heat accumulation generated in the cold aisle is above the cold aisle, the room air conditioning system guides cold air to the heat accumulation by shortening the extension dimension of the air guide mechanism from the ceiling downward. It is possible to cool the heat accumulation and reliably eliminate the heat accumulation. In addition, when the heat accumulation generated in the cold aisle is in the middle or below the cold aisle, the length of the downward extension of the air guide mechanism from the ceiling can induce cold air to the heat accumulation. The heat pool can be cooled to eliminate the heat pool. The air conditioning system intercepts the lower part of the wind guide mechanism and opens the upper part of the wind guide mechanism, for example, when the heat accumulation generated in the cold aisle is a long distance from the position of the blowout unit and a short distance from the position of the blowout unit. Therefore, the cool air supplied from the air outlet located in the lower stage is guided to the heat accumulation at a short distance by the air guide mechanism, and the cold air supplied from the air outlet located in the upper stage is above the air guide mechanism. It can be passed to a long distance heat accumulation, and the heat accumulation can be simultaneously cooled to eliminate the heat accumulation. When the temperature of the heat storage is high, the air conditioning system lengthens the extension of the air guide mechanism downward from the ceiling or lengthens the extension of the air guide mechanism upward from the top of the server rack. A large amount of cold air can be supplied to the heat accumulation, and the heat accumulation can be eliminated.

  The air conditioning system for information processing equipment rooms in which a plurality of air guide mechanisms are installed side by side in the cross direction and the air guide function of the air guide mechanisms is turned on / off according to the location of heat accumulation is By turning on the air guide function of the air guide mechanism located in the vicinity, cold air can be induced to the heat reservoir using the air guide function of the air guide mechanism, and the heat reservoir can be cooled. . On the contrary, by turning off the air guide function of the air guide mechanism installed at the place where the heat accumulation does not occur, the air guide mechanism of the place where the heat accumulation does not occur disturb the flow of the cold air. Because there is not, cold air can be supplied to the heat accumulation generated at other places. Also, for example, when heat accumulation occurs on the side of one side of the cold aisle, cold air is induced in the heat accumulation by turning on the air flow function of the air guide mechanism installed at the position of the heat accumulation. By turning off the air guide function of the other air guide mechanism, it is possible to supply cold air to the heat reservoir generated away from the heat reservoir. In the air conditioning system, even if the heat accumulation is generated to the side of the side of the cold aisle, the cold air can be guided to the heat accumulation using the air guide mechanism, and the heat accumulation is cooled and the heat accumulation is generated. Can be eliminated.

  An air conditioning system for an information processing room of an information processing equipment room, comprising 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, a wind direction supported by the support member By using the plate, the cold air supplied from the blowout unit can be directed to the heat accumulation. Therefore, by changing the installation position of the wind direction plate, it is assumed that the heat accumulation occurred in any part of the cold aisle. Also, the cold air can be supplied toward the heat accumulation, and the heat accumulation can be cooled to a pinpoint to eliminate the heat accumulation.

  The cold air supplied from the blowout unit travels to the heat accumulation along the ceiling of the cold aisle by the Coanda effect, and separates the cold aisle and the hot aisle by the Coanda effect, for the information processing equipment room toward the heat accumulation along the wall In the air conditioning system, the cold air is reliably delivered to the heat silently by the Coanda effect, and the cold air can be prevented from not reaching the heat accumulation due to the cold air being dispersed in all directions in the cold aisle. Even if the heat is generated in the portion, the cold air can be supplied toward the heat accumulation, and the heat accumulation can be selectively cooled to eliminate the heat accumulation.

  Referring to the attached drawings such as FIG. 1 which is a side view of the air conditioning room 12 and the machine room 23 of the data center 11 in which the air conditioning system 10 for information processing room shown by way of example is installed The details of the air conditioning system are as follows. 2 is a front view of the air conditioning room 12 in which the air conditioning system 10 for information processing equipment room is installed, and FIG. 3 is an air conditioning room 12 and machinery of the data center 11 in which the air conditioning system 10 for information processing equipment room is installed. FIG. 14 is a top view of a chamber 23; FIG. 4 is a side view of first to third blowout units 19a to 19c shown as an example, and FIG. 5 is a side view of air guide mechanisms 46a to 46c shown as an example. 6 is a front view of the air guide mechanisms 46a to 46c of FIG.

  A plurality of information processing equipment room air conditioning systems 10 installed in the data center 11 and stored in server racks 13 (information processing equipment storage racks) installed in the air conditioning room 12 (information processing equipment room) of the data center 11 Is used to cool the server. In addition, this air conditioning system 10 can be used not only for the air conditioning room 12 of the data center 11 but also for a plurality of servers (including other network devices) installed and which need to be cooled. . The air conditioning system 10 includes a plurality of server racks 13 installed in an 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 temperature sensors 17a to 17i, a second temperature sensor 18 used to measure the representative temperature of the air conditioning chamber 12, first to third blowout units 19a to 19c (air flow amount blowout units), and a controller 20 (control device) ing.

  Although FIG. 3 illustrates the three first to third air conditioners 16a to 16c and the three first to third blowout units 19a to 19c, the number of air conditioners and blowout units is particularly limited. However, four or more air conditioners or blowout units may be installed, or one air conditioner or blowout unit may be installed, depending on the volume of the air conditioning chamber 12 and the number of server racks 13 installed therein.

  The server racks 13 are arranged such that a plurality of them are continuously arranged in the front-rear direction (one direction), equally spaced in the lateral direction (cross direction intersecting the one direction) at equal intervals, and parallel to one another in the lateral direction It is installed in the room 12. Although not shown, a plurality of servers (including other network devices) are installed and fixed in the server rack 13. The servers are connected to a power supply device, and when operating, they generate heat by operating heat and their temperature rises.

  The cold aisle 14 is located between the adjacent server racks 13 and extends in the front-rear direction. The cold aisle 14 is located between the ceiling 51 (ceiling panel), the floor (floor panel), the side wall, the adjacent server rack 13 and the top 21 of the server rack 13 and the ceiling 51 and extends vertically. It is surrounded by the wall 22 (see FIG. 2). The cold aisle 14 has a predetermined passable volume, through which cold air (cooling air) flows. Although not shown, a cold air outlet panel extending in the front-rear direction is installed on the floor of the cold aisle 14.

  The hot aisle 15 is located between the adjacent server racks 13 and opposite to the cold aisle 14 with the server rack 13 interposed therebetween, and extends in the front-rear direction parallel to the cold aisle 14. The hot aisle 15 is surrounded by a ceiling 51 (ceiling panel), a floor (floor panel), a side wall, an adjacent server rack 13, and a leaning wall 22. The hot aisle 15 has a predetermined passable volume, through which warm air (heated air) flows. Although not shown, a ceiling 51 of the hot aisle 15 is provided with a hot air suction opening extending in the front-rear direction. The cold aisle 14 and the hot aisle 15 are separated by a server rack 13 and a leaning wall 22.

  The first to third air conditioners 16a to 16c are floor-standing type, and are installed on the floor of the machine room 23 adjacent to the air-conditioning room 12 with a side wall separated. The air conditioners 16a to 16c cool the mixture of the warm air returned from the air conditioning chamber 12 and the outside air to form a cold air of a predetermined temperature that is air conditioned, and supply the cold air to the cold aisle 14 of the air conditioning chamber 12. . Air-cooled or water-cooled air conditioners can be used as the air conditioners 16a to 16c.

  In each of the air conditioners 16a to 16c, an inlet 24 for the mixture of the return air from the air conditioning chamber 12 and the outside air is installed, and the cooling coil 25, the blower fan 26 (fan), and the filter (not shown) And a humidifier (not shown). The blower fan 26 has its blower capacity (output) adjusted by inverter control. The number of the blower fans 26 is not particularly limited, and one or more blower fans 26 are installed in the air conditioners 16a to 16c for sharing the cooling air supply to the air conditioning chamber 12 and for redundancy design. Ru. The first air supply duct 27 is connected to the top of the air conditioners 16a to 16c, and the second air supply duct 28 is connected to the bottom of the air conditioners 16a to 16c.

  The first air supply duct 27 extends upward from the top portions of the air conditioners 16a to 16c, and the blowout units 19a to 19c are connected to the tip end portions thereof. A first motor damper 29 (first damper) (MD) is installed in the first air supply duct 27. In the first air supply duct 27, the amount of cold air passing therethrough is adjusted by the degree of opening of the first motor damper 29 (the turning angle of the turning blade of the motor damper 29).

  The first air blow unit 19a is connected to the first air conditioner 16a via the first air supply duct 27, and the second air blow unit 19b is connected to the second air conditioner 16b via the first air supply duct 27. The third air conditioner 16 c is connected to the third blow-out unit 19 c via the first air supply duct 27.

  The second air supply duct 28 extends forward from the bottom of the air conditioners 16a to 16c, and the tip thereof is disposed in the underfloor space 30 of the air conditioning chamber 12 through the side wall. A second motor damper 31 (second damper) (MD) is installed in the second air supply duct 28. In the second air supply duct 28, the amount of cold air passing therethrough is adjusted by the opening degree of the second motor damper 31 (the turning angle of the turning blade of the motor damper 31).

  The tip of the second air supply duct 28 extending from the bottom of each of the first to third air conditioners 16 a to 16 c is located in the underfloor space 30 of the air conditioning chamber 12. In the underfloor space 30, a first wind guide mechanism 32 (wind direction plate) is installed to control the flow of cold air and properly adjust the wind speed distribution of the cold aisle 14. The first air guide mechanism 32 is suspended from the floor toward the under floor space 30. In the under floor space 30, although not shown, 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, etc. An obstacle is stored.

  The first temperature sensors 17a to 17c are disposed at the top 21 of the server rack 13 located on the side of the cold aisle 14, and are arranged at equal intervals in the front-rear direction (one direction). The first temperature sensors 17 a to 17 c measure the first temperature of the cold aisle 14 at the top 21 of the server rack 13, and transmit the measured first temperature signal to the controller 20.

  The first temperature sensors 17 d to 17 f are disposed at an intermediate portion of the server rack 13 located on the side of the cold aisle 14 and are arranged at equal intervals in the front-rear direction (one direction). The first temperature sensors 17 d to 17 f measure the first temperature of the cold aisle 14 in the middle portion of the server rack 13, and transmit the measured first temperature signal to the controller 20.

  The first temperature sensors 17g to 17i are disposed at the bottom 33 of the server rack 13 located on the side of the cold aisle 14, and are arranged at equal intervals in the front-rear direction (one direction). The first temperature sensors 17 g to 17 i measure the first temperature of the cold aisle 14 at the bottom 33 of the server rack 13, and transmit the measured first temperature signal to the controller 20.

  In the first temperature sensors 17a to 17i, the temperature sensor 17d is located directly below the temperature sensor 17a, and the temperature sensor 17g is located directly below the temperature sensor 17d. The temperature sensor 17e is located directly below the temperature sensor 17b, and the temperature sensor 17h is located directly below the temperature sensor 17e. The temperature sensor 17f is located directly below the temperature sensor 17c, and the temperature sensor 17i is located directly below the temperature sensor 17f. In FIG. 1, although three temperature sensors are arranged at substantially equal intervals in the front-rear direction, four or more temperature sensors may be installed at approximately equal intervals depending on the number of server racks 13 installed in the air conditioning room 12 .

  In the air conditioning system 10, as shown in FIG. 1, the cold aisle 14 in which the server racks 13 are located is divided into a cold area A to a cold area F according to the sensing range of the temperature sensors 17a to 17i. For example, the sensing range of temperature sensor 17a is cold area A, the sensing range of temperature sensor 17b is area B, the sensing range of temperature sensor 17c is area C, and the sensing range of temperature sensors 17d and 17g is area D, temperature sensor 17e, The sensing range of 17 h is an area E, and the sensing range of the temperature sensors 17 f and 17 i is an area F. Although the cold aisle 14 is divided into six areas A to F in FIG. 1, the number of areas is not particularly limited, and the cold aisle 14 may be divided into eight or more areas. Further, the criteria for dividing the cold aisle 14 are not limited to the example of FIG. 1, and the cold aisle 14 may be classified according to other criteria.

  The second temperature sensor 18 is installed in the cold aisle 14 where the server rack 13 does not exist. The second temperature sensor 18 measures the second temperature of the cold aisle 14 where the server rack 13 is not present, and transmits the measured second temperature signal to the controller 20. In some cases, the second temperature sensor 18 may be installed in the cold aisle 14 in which the server rack 13 is present. In this case, it is necessary that the server (including other network equipment) is not installed in the server rack 13.

  If the first temperature measured by the temperature sensor 17a among the temperature sensors 17a to 17i exceeds the set temperature, the controller 20 determines that heat accumulation has occurred in the area A. When the first temperature measured by the temperature sensors 17a, 17b and 17c among the temperature sensors 17a to 17i exceeds the set temperature, the controller 20 determines that heat accumulation has occurred in the area A, the area B, and the area C. . When the first temperature measured by the temperature sensors 17 d and 17 g of the temperature sensors 17 a to 17 i exceeds the set temperature, the controller 20 determines that heat accumulation has occurred in the area D. Further, when the first temperature measured by the temperature sensors 17e, 17h, 17f, 17i among the temperature sensors 17a to 17i exceeds the set temperature, the controller 20 determines that heat accumulation has occurred in the area E and the area F. Do.

  The first to third blowout units 19a to 19c are located between the lower side (directly below) of the ceiling 51 of the cold aisle 14 and the upper side of the top 21 of the server rack 13, and from one end of the cold aisle 14 Cold air is supplied in the front-rear direction (one direction) toward the other end side. As shown in FIG. 4, the first to third blowout units 19 a to 19 c are connected to the air supply chamber 34 connected to the front end of the first air supply duct 27 and to the air supply chamber 34 and forward from the chamber 34. First to third branch ducts 35a to 35c extending to the first to third wind ducts 36a to 36c (first to nth wind speed regulation mechanisms) installed in the first to third branch ducts 35a to 35c , And an outlet housing 37 connected to the branch ducts 35a to 35c.

  The first to third branch ducts 35a to 35c are arranged in the order of the first branch duct 35a, the second branch duct 35b, and the third branch duct 35c from the top to the bottom. The first branch duct 35a is provided with a first wind speed adjustment damper 36a, and the second branch duct 35b is provided with a second wind speed adjustment damper 36b, and the third branch duct 35c is provided with a third wind speed. An adjustment damper 36c is installed. Although air volume adjustment dampers (VD) are used for the first to third wind speed adjustment dampers 36a to 36c, motor dampers can also be used. In the first to third branch ducts 35a to 35c, the ducts 35a to 35c are adjusted by adjusting the opening degree of the first to third wind speed adjustment dampers 36a to 36c (the turning angle of the turning blades of the wind speed adjustment dampers 36a to 36c). The wind speed (air volume) of the cold wind passing through is adjusted.

  The blowout housing 37 has a front and rear wall, a top bottom wall, and both side walls, and has an interior space 38 surrounded by the walls. The blowout housing 37 is fixed to a side wall that divides the air conditioning room 12 and the machine room 23. First to third air inlets 39a to 39c (air inlets) are formed in the rear wall. The air inlets 39a to 39c are a first air inlet 39a located in the vicinity of the ceiling 51 of the cold aisle 14 from above and a second air inlet 39b located directly below the first air inlet 39a. It is located in a line in order of the 3rd air inlet 39c located directly under the 2nd air inlet 39b.

  A first branch duct 35a is connected to the first air inlet 39a, and a second branch duct 35b is connected to the second air inlet 39b, and a third air inlet 39c is connected to the third air inlet 39c. The branch duct 35c is connected. On the front wall, first to third air outlets 40a to 40c (first to n-th air outlets) are formed. The air outlets 40a to 40c are a first air outlet 40a located in the vicinity of the ceiling 51 of the cold aisle 14 from above and a second air outlet 40b located immediately below the first air outlet 40a. It arranges in order of the 3rd air blower outlet 40c located directly under the 2nd air blower outlet 40b.

  A partition plate 41 is installed in the internal space 38 of the blowout housing 37. In the internal space 38 of the blowout housing 37, first to third air flow paths 42a to 42c (first to nth air flow paths) are formed by the partition plates 41. The air flow paths 42a to 42c are arranged in the order of the first air flow path 42a, the second air flow path 42b, and the third air flow path 42c from the upper side to the lower side. The first air flow passage 42a extends between the first air inlet 39a and the first air outlet 40a. The second air flow passage 42b extends between the second air inlet 39b and the second air outlet 40b. The third air passage 42c extends between the third air inlet 39c and the third air outlet 40c.

  In the blowout units 19a to 19c, the speed of the cold air supplied from the first to third air outlets 40a to 40c is adjusted by adjusting the opening degree of the first to third wind speed adjustment dampers 36a to 36c, The forward reach distance in the cold aisle 14 of the cold air supplied from the outlets 40a to 40c is changed.

  On the ceiling 51, second air guide mechanisms 46a to 46c (air guide mechanisms) are installed at predetermined positions. In addition, the installation location of a wind guide mechanism can be determined arbitrarily. Although three air guide mechanisms 46a to 46c are installed on the ceiling 51 in FIG. 1, the number of air guide mechanisms is not particularly limited, and four or more according to the length of the server rack 13 in the front-rear direction. A wind guide mechanism may be installed.

  As shown in FIGS. 5 and 6, the second air guide mechanisms 46a to 46c are pivotably installed on the ceiling 51 of the cold aisle 14, and hang from the ceiling 51 when used. The wind guiding mechanisms 46a to 46c shown in FIGS. 5 and 6 include a wind direction plate 47 (shielding plate) extending in the vertical direction, and a support frame 48 (supporting member) extending in the vertical direction and slidably supporting the wind direction plate 47. And are formed from. In the air guide mechanisms 46a to 46c, the wind direction plate 47 is insertably inserted into the support frame 48 so as to be removable. The air guide mechanisms 46a to 46c guide the cold air to the heat accumulation by the cold air supplied from the blowout units 19a to 19c hitting the wind direction plate 47.

  Although not shown, automatic opening / closing devices are installed in the second air guiding mechanisms 46a to 46c. The automatic switching device is connected to the controller 20 by a signal line. As shown in FIG. 5, the air guide mechanisms 46 a to 46 c can be automatically turned in the vertical direction with respect to the ceiling 51 by the automatic opening and closing device. By turning the wind guiding mechanisms 46a to 46c downward from the ceiling 51, the wind guiding mechanisms 46a to 46c hang down from the ceiling 51, and by turning the wind guiding mechanisms 46a to 46c upward from the hanging state, the wind guiding mechanism The mechanisms 46 a to 46 c are accommodated in the ceiling 51. When the automatic opening / closing device is not installed in the air guide mechanisms 46a to 46c, the air guide mechanisms 46a to 46c are manually turned.

  The controller 20 is a computer having a central processing unit (CPU or MPU) and a memory (main memory and cache memory), and incorporates a storage device. An input / output device such as a ten key unit (not shown) or a display (not shown) is connected to the controller 20 through an interface. The central processing unit of the controller 20 starts an application from the memory based on control by the operating system, and performs each air conditioning operation described later according to the started application.

  The control unit of the blower fan 26 is electrically connected to the controller 20 by a signal line or radio, and the control units of the first and second motor dampers 29 and 31 are electrically connected by a signal line or radio. The first and second temperature sensors 17a to 17i and 18 are electrically connected by signal lines or wirelessly. Furthermore, the automatic opening and closing devices of the air guide mechanisms 46a to 46c are electrically connected by signal lines or wirelessly.

  The storage device of the controller 20 stores the opening degree information of the second motor damper 31 with respect to the air supply ratio of the cold air supplied from the second air supply duct 28 in the air conditioning operation in the normal mode described later. The air blowing capacity information (output information) of the air blowing fan 26 with respect to the air supply ratio of the cold air supplied from 28 is stored.

  The storage device of the controller 20 stores an air conditioning pattern table (see FIG. 10) in the air conditioning operation in the normal mode and the air conditioning operation in the heat buildup elimination mode described later.

  As shown in FIG. 3, adjacent air conditioners 16a and 16b are connected by a bypass duct 43, adjacent air conditioners 16b and 16c are connected by a bypass duct 43, and the air conditioning system 10 is redundant. . A bypass damper 44 is installed in the bypass duct 43. During the normal air conditioning operation, the air flow path of the bypass damper 44 is closed (opening degree is 0). In the air conditioning system 10, for example, when the air conditioner 16c fails for any reason, the bypass damper 44 can be opened (full open) to compensate for the cold air shortage of the air conditioner 16c from the air conditioner 16a or the air conditioner 16b. It is possible to prevent an inadvertent stop of the system 10, and repair the failed air conditioner 16c without stopping the system 10.

  FIG. 7 is a side view similar to FIG. 1 illustrating the air conditioning operation of the air conditioning system 10 in the normal mode when heat accumulation does not occur in the cold aisle 14, and FIG. 8 shows heat accumulation in the cold aisle 14 It is a front view similar to FIG. 2 explaining the air conditioning driving | operation of normal mode of the air conditioning system 10 when not generate | occur | producing. FIG. 9 is a flowchart illustrating each air conditioning operation performed in the air conditioning system 10. In FIG. 7, the controller 20 is omitted.

  In the data center 11, due to the operation of the plurality of servers accommodated in the server rack 13, the servers self-heat and the temperature of the servers rises. If the temperature rise of the server is left as it is, the server may break down, causing troubles in the operation of the data center 11. Therefore, it is necessary to supply cold air from the air conditioners 16a to 16c to cool those servers.

  In the situation where heat accumulation does not occur in the cold aisle 14, the normal mode air conditioning operation is performed (S-10), whereby the server is cooled. In the air conditioning operation in the normal mode, it is not necessary to eliminate the heat accumulation, the first motor damper 29 is closed (fully closed), and the cold air is not supplied to the blowing units 19a to 19c from the air conditioners 16a to 16c.

  In the air conditioning operation in the normal mode, the air flow path of the second motor damper 31 is opened, and in order to supply cold air to the underfloor space 30, the blower fan 26 operates and is cooled to a predetermined temperature by the air conditioners 16a to 16c. The cold air (cooling air) passes through the second air supply duct 28 and is supplied to the underfloor space 30 of the air conditioning room 12.

  Cold air flows from the cold air outlet panel into the cold aisle 14 through the underfloor space 30, as shown by the arrows in FIG. The cold air having flowed into the cold aisle 14 flows from the side of the server rack 13 into the rack as shown by the arrow in FIG. 8 and cools the server housed in the rack while flowing through the rack. The cold air that has cooled the server absorbs the heat of the server and turns into warm air, and the warm air flows out from the side of the server rack 13 and flows into the hot aisle 15. The warm air that has flowed into the hot aisle 15 flows into the ceiling space 45 of the air conditioning room 12 through the hot air suction opening, then flows into the machine room 23 from the air conditioning room 12 through the ceiling space 45, and the air conditioner 16a again. Reflux to ~ 16c. 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. The air (air-fuel mixture) that has flowed into the air conditioners 16a to 16c is cooled by the air conditioners 16a to 16c and becomes cold air, and is again supplied to the cold aisle 14 from the underfloor space 30.

  In the air conditioning operation in the normal mode, the controller 20 performs constant temperature control by comparing the first and second temperatures measured by the first temperature sensors 17 a to 17 i and the second temperature sensor 18 with the set temperature. The opening degree is finely adjusted, the output (blowing capacity) of the blower fan 26 is finely adjusted, and the cold air necessary for cooling the server accommodated in the server rack 13 is supplied to the cold aisle 14 at a minimum. The correlation information between the first and second temperatures and the minimum amount of cold air flow required to cool the server is stored in the storage device of the controller 20, and the second motor damper 31 is opened corresponding to the minimum necessary cold air flow. The degree value (the turning angle of the turning blade) is stored in the storage device of the controller 20, and the value of the output of the blower fan 26 corresponding to the minimum required amount of cold air is stored in the storage device of the controller 20 .

  The controller 20 uses the first and second temperatures sent from the first and second temperature sensors 17a to 17i to determine the minimum amount of cold air necessary to cool the server, and maintain the determined air volume An opening degree change signal for the second motor damper 31 is transmitted to the control unit of the second motor damper 31. The control unit of the second motor damper 31 changes the opening degree of the motor damper 31 in accordance with the opening degree change signal from the controller 20, and maintains the opening degree. Further, the controller 20 transmits an output change signal for maintaining the determined minimum required air volume to the control unit of the blower fan 26. The control unit of the blower fan 26 controls the output of the blower fan 26 according to the output change signal and maintains the output. Note that, in the air conditioning operation in the normal mode, the controller 20 adjusts at least one of the opening degree of the second motor damper 31 and the output of the blower fan 26 in order to maintain the necessary minimum amount of cold air.

  FIG. 10 is a view showing an example of the air conditioning pattern table in the air conditioning operation in the heat buildup elimination mode stored in the storage device of the controller 20. FIG. 11 shows the case where the heat buildup 49 occurs in the area C of the cold aisle 14 It is a side view similar to FIG. 1 explaining an example of the air-conditioning driving | operation of the heat buildup elimination mode of FIG. In the air conditioning pattern table of FIG. 10, there are (1) to (720) air conditioning patterns defining the preset operation conditions for the combination area of the areas A to F ((1) to (721) ways including no heat accumulation). However, illustration of all those combination areas is omitted and only some combination areas are illustrated. In FIG. 11, the controller 20 is omitted.

  The preset information defined in the air conditioning pattern table of FIG. 10 includes areas A to F when heat accumulation occurs in the cold areas A to F, the combination areas of the areas A to F, the areas A to F, and the combination areas. And the output (%) of the blower fan 26 corresponding to the combination area, and the output (%) of the blower fan 26 corresponding to the areas A to F and the combination area when heat accumulation occurs in the areas A to F and the combination area And the opening degree (%) of the first motor damper 29 corresponding to the areas A to F and the combination area when the heat accumulation occurs in the areas A to F and the combination area, and the heat accumulation occurs in the areas A to F and the combination area The opening degree (%) of the second motor damper 31 corresponding to the areas A to F and the combination area in the case of having been set is defined. Furthermore, ON / OFF of the first air guiding mechanism 32 of the areas A to F and the combination area, ON / OFF of the second air guiding mechanisms 46 a to 46 c of the areas A to F and the combination area, the area A to F and the combination area The use positions of the second air guide mechanisms 46a to 46c used when heat accumulation occurs, the areas A to F when the heat accumulation occurs in the combination areas, and the blowing units 19a to 19a corresponding to the combination areas The wind speed ratios of the 19c first to third air outlets 40a to 40c are defined.

  When heat accumulation occurs in the areas A to F and the combination area, the heat accumulation is eliminated by the supply of the cold air from the blowout units 19a to 19c without using the second air introduction mechanisms 46a to 46c, and the air introduction At least one of the mechanisms 46a to 46c is turned ON (droop from the ceiling 51). In the case where heat accumulation does not occur, the air guide mechanisms 46 a to 46 c are off (stored in the ceiling 51). Among the use positions (1) to (3) of the air guide mechanisms 46a to 46c of the air conditioning pattern table, (1) shows the air guide mechanism 46c, and when only (1) is displayed, only the air guide mechanism 46c Turns on. (2) shows the air guide mechanism 46b, and when only (2) is displayed, only the air guide mechanism 46b is turned on. (3) shows the air guide mechanism 46c, and when only (3) is displayed, only the air guide mechanism 46a is turned on. When (1) and (2) are displayed, the air guide mechanisms 46b and 46c are turned on, and when (1) to (3) are displayed, the air guide mechanisms 46a to 46c are turned on.

  Among the wind speed ratios of the first to third air outlets 40a to 40c of the air conditioning pattern table, the upper, middle, and lower correspond to 5: 3: 1, and the upper is the first air blow of the upper stage of the blowout units 19a to 19c. The outlet 40a is shown, and the middle shows the second air outlet 40b at the middle stage of the blowout units 19a to 19c, and the lower side shows the third air blowout outlet 40c at the lower stage of the blowout units 19a to 19c.

  In the air conditioning pattern table of FIG. 10, when the total air volume of the cold air supplied from the air conditioners 16a to 16c is 100%, the ratio of the cold air supplied to the underfloor space 30 is 70 to 90%. The degree of opening of the first and second motor dampers 29 and 31 is determined so that the ratio of the cold air supplied to the blowout units 19a to 19c is in the range of 10 to 30%. Furthermore, when the total volume of the cold air supplied from the air conditioners 16a to 16c is 100%, the ratio of the cold air supplied to the underfloor space 30 is 70 to 90%, and the blowout units 19a to 19c are The output (blowing capacity) of the blower fan 26 is determined such that the ratio of the cold air supplied is in the range of 10 to 30%.

  Although the temperature of the server's self-heating varies depending on the operating status of the server, the server with a high operating rate tends to have a high temperature, and it is near by the turbulence of the air flow such as heat of the server or backflow of air flow from the server rack 13 Heat buildup may occur in the cold aisle 14 of FIG. If heat accumulation occurs in the cold aisle 14, the cold air supplied from the underfloor space 30 to the cold aisle 14 alone can not sufficiently cool the server in the vicinity of the heat accumulation. If the temperature of the server in the vicinity of the heat accumulation can not be lowered, and the server operates with high temperature, it causes a failure of the server and causes problems in the operation of the data center 11. Therefore, it is necessary to eliminate the heat accumulation generated in the cold aisle 14.

  First and second temperatures are transmitted from the first temperature sensors 17 a to 17 i and the second temperature sensor 18 to the controller 20 during the air conditioning operation in the normal mode. The controller 20 compares each of the first temperatures measured by the first temperature sensors 17a to 17i with the set temperature, and determines whether the first temperature exceeds the set temperature (S-11). If the first temperature does not exceed the set temperature, the controller 20 continues the air conditioning operation in the normal mode (S-12). While continuing the air conditioning operation in the normal mode, the controller 20 determines whether a command to stop the air conditioning operation in the normal mode in the system 10 is instructed (S-13). The controller 20 monitors whether the first temperature exceeds the set temperature in step 11 (S-11) while continuing the air conditioning operation in the normal mode unless a stop command is issued. When a stop command is issued, the controller 20 stops the air conditioning operation in the normal mode, and the system 10 stops.

  In step 11 (S-11), when the controller 20 determines that the first temperature exceeds the set temperature, it determines that heat accumulation has occurred in the cold aisle 14, and the heat of the areas A to F is generated. The area where the accumulation has occurred is identified (S-14). In FIG. 11, the first temperature measured by the first temperature sensor 17 c exceeds the set temperature, and the controller 20 determines that the heat accumulation 49 has occurred in the area C of the cold aisle 14. When the heat accumulation 49 occurs in the area C of the cold aisle 14, the air conditioning operation in the normal mode is interrupted in the air conditioning system 10, and the air conditioning operation in the heat accumulation elimination mode is performed.

  If it is determined that the heat accumulation 49 has occurred in the area C, the controller 20 refers to the air conditioning pattern table shown in FIG. 10, selects the pattern (3) in which the area temperature conditions match, and is preset to the pattern (3) The air conditioning operation in the heat buildup elimination mode is performed according to the operating conditions (S-15). The controller 20 controls the output (50%) (blowing capacity) of the blower fan 26 when the heat accumulation 49 occurs in the area C, the opening degree (10%) of the first motor damper 29, and the opening degree (90%) of the second motor damper , ON / OFF (ON) of the first air guiding mechanism 32, ON / OFF (ON) of the second air guiding mechanisms 46a to 46c, a use position (3) of the second air guiding mechanisms 46a to 46c, the blowout unit 19a Carry out the preset operating conditions of the wind speed ratio "5: 3: 1".

  The controller 20 transmits an opening degree instruction signal of the opening degree (10%) of the first motor damper 29 to the control unit of the motor damper 29 according to the preset operation condition of the selected air conditioning pattern (3), and the opening degree of the second motor damper 31 An opening instruction signal of (90%) is transmitted to the control unit of the motor damper 31. The control unit of the first motor damper 29 matches the opening degree to that of the opening degree instruction signal (10%) according to the opening degree instruction signal from the controller 20, and maintains the opening degree. The control unit of the second motor damper 31 makes the opening degree coincide with that of the opening degree instruction signal (90%) according to the opening degree instruction signal from the controller 20, and maintains the opening degree.

  The controller 20 transmits an output instruction signal of the output (50%) (blower capability) of the blower fan 26 to the control unit of the blower fan 26 according to the preset operation condition of the selected air conditioning pattern (3). The control unit of the blower fan 26 performs inverter control of the output of the blower fan 26 according to the output instruction signal (50%) from the controller 20, and maintains the output.

  In the air conditioning operation of the heat accumulation eliminating mode of the air conditioning pattern (3) for the area C, the opening degree of the first and second motor dampers 29, 31 and the output of the blower fan 26 are adjusted to supply from the air conditioners 16a to 16c. Assuming that all the ailing cold air is 100%, the ratio of the cold air supplied to the underfloor space 30 is 90%, and the ratio of the cold air supplied to the blowout units 19a to 19c is 10%. In the air conditioning operation in the heat buildup elimination mode, both the opening degree of the first and second motor dampers 29 and 31 and the output of the blower fan 26 are adjusted, but the opening degree of the motor dampers 29 and 31 is adjustable. It is also possible to carry out the air conditioning operation in the heat buildup elimination mode while adjusting one or the other of the outputs of the above.

  The controller 20 transmits an open signal (ON signal) to the air guide mechanism 46a installed at the use position (3) of the air guide mechanism according to the preset operation condition of the selected air conditioning pattern (3). In the air guide mechanism 46 a, the automatic opening / closing device operates in accordance with the open signal transmitted from the controller 20, and the air guide mechanism 46 a pivots downward from the ceiling 51 and hangs down from the ceiling 51. An open signal (ON signal) is not transmitted to the other air guide mechanisms 46 b and 46 c, and the state in which the air guide mechanisms 46 b and 46 c are accommodated in the ceiling 51 is maintained.

  In the air conditioning operation in the heat buildup elimination mode, the air flow paths of the first motor damper 29 and the second motor damper 31 are opened to the set opening (10%, 90%), and the blower fan 26 operates at the set output (50%) Cold air (cooling air) cooled to a predetermined temperature by the first to third air conditioners 16a to 16c is supplied to the first to third blowing units 19a to 19c through the first air supply duct 27, The air is supplied to the underfloor space 30 of the air conditioning room 12 through the second air supply duct 28. The movement path of the cold air supplied to the underfloor space 30 is the same as that of the air conditioning operation in the normal mode shown in FIG.

  In the air conditioning operation in the heat buildup elimination mode of FIG. 11, the first branch duct 35a is installed so that the ratio of the wind speed of the cold air supplied from the first air outlet 40a in the upper stage of the blowout unit 19a is "5". The second branch duct is adjusted so that the ratio of the wind speed of the cold air supplied from the middle second air outlet 40b of the blowout unit 19a is "3" by adjusting the opening degree of the first wind speed adjustment damper 36a. The opening degree of the second wind speed adjustment damper 36b installed at 35b is adjusted, and the ratio of the wind speed of the cold air supplied from the third air outlet 40c at the lower stage of the blowout unit 19a is "1". The opening degree of the third wind speed adjustment damper 36c installed in the third branch duct 35c is adjusted.

  After the cold air supplied from the blowout unit 16a flows into the first and second air inlets 39a, 39b of the blowout housing 37 through the first and second branch ducts 35a, 35b, the first and second air are discharged. Air is supplied from the outlets 40a and 40b toward the heat reservoir 49 generated in the area C of the cold aisle 14. The cold air supplied from the first air outlet 40 a and the second air outlet 40 b reaches the heat reservoir 49 generated in the area C.

  The cold air travels along the ceiling 51 of the cold aisle 14 to the heat accumulation 49 in the area C by the Coanda effect, separates the cold aisle 14 and the hot aisle 15 by the Coanda effect, and travels the heat accumulation 49 along the wall 22. Furthermore, as shown in FIG. 11, the cold air is directed downward from the front-rear direction by the wind direction plate 47 of the air guide mechanism 46 a and is guided toward the heat reservoir 49. The cold air supplied from the blowout unit 19a is supplied to the heat reservoir 49 in the area C, whereby the heat reservoir 49 is cooled by the cold air.

  The cold air that has cooled the heat reservoir 49 absorbs the heat of the heat reservoir 49 and absorbs the heat of the server to change to a warm air, and the warm air flows out from the side of the server rack 13 and flows into the hot aisle 15. The warm air that has flowed into the hot aisle 15 flows into the ceiling space 45 of the air conditioning room 12 through the hot air suction opening panel, and then flows into the machine room 23 from the air conditioning room 12 through the ceiling space 45. Reflux to 16a. The air (air-fuel mixture with the outside air) that has flowed into the air conditioner 16a is cooled by the air conditioner 16a to become cold air, and is again supplied to the heat reservoir 49 in the area C from the blowing unit 19a.

  While performing the air conditioning operation in the heat buildup elimination mode, the controller 20 determines whether the first temperature measured by the temperature sensor 17c falls within the set temperature range and the heat buildup 49 generated in the area C is eliminated (S) -16). In step 16 (S-16), when the controller 20 determines that the heat accumulation 49 has not been eliminated (when the first temperature exceeds the set temperature), the heat accumulation cancellation mode of the air conditioning pattern (3) is Continue the air conditioning operation (S-17). While continuing the air conditioning operation of the heat accumulation cancellation mode of the air conditioning pattern (3), the controller 20 determines whether a command to stop the air conditioning operation of the heat accumulation cancellation mode in the system 10 has been issued (S-18). The controller 20 monitors whether the first temperature falls within the set temperature range in step 16 (S-16) while continuing the air conditioning operation of the heat buildup elimination mode of the air conditioning pattern (3) unless the stop is commanded. Do. When a stop command is issued, the controller 20 stops the air conditioning operation in the heat buildup elimination mode, and the system 10 stops.

  In step 16 (S-16), when the controller 20 determines that the heat accumulation 49 is eliminated (when the first temperature reaches the set temperature range), the controller 20 interrupts the air conditioning operation in the heat accumulation elimination mode, and the normal mode (S-10), and it is determined whether the first temperature measured by the first temperature sensors 17a to 17i exceeds the set temperature (S-11).

  FIG. 12 is a side view similar to FIG. 1 for explaining another example of the air conditioning operation in the heat accumulation elimination mode when heat accumulations 49a to 49c are generated in the areas A, B and C of the cold aisle 14, 13 is a side view of the air guide mechanism 46b shown as another example. FIG. 14 is a front view of the air guide mechanism 46b of FIG. 13, and FIG. 15 is a side view of the air guide mechanism 46c shown as another example. FIG. 16 is a front view of the air guide mechanism 46c of FIG. In FIG. 12, the controller 20 is omitted.

  The controller 20 compares each of the first temperatures measured by the first temperature sensors 17a to 17i with the set temperature, and determines whether the first temperature exceeds the set temperature (S-11). If the first temperature does not exceed the set temperature, the controller 20 continues the air conditioning operation in the normal mode (S-12). The controller 20 determines whether stop of the air conditioning operation of the normal mode in the system 10 is instructed (S-13), and continues the air conditioning operation of the normal mode unless stop is instructed, step 11 (S-11). Monitor whether the first temperature exceeds the set temperature.

  In step 11 (S-11), when the controller 20 determines that the first temperature exceeds the set temperature, it determines that heat accumulation has occurred in the cold aisle 14, and the heat of the areas A to F is generated. The area where the accumulation has occurred is identified (S-14). In FIG. 12, it is determined that the first temperature measured by the first temperature sensors 17a, 17b and 17c exceeds the set temperature, and the controller 20 generates heat accumulations 49a to 49c in the areas A, B and C of the cold aisle 14. Do.

  If it is determined that heat accumulations 49a to 49c have occurred in the areas A, B and C, the controller 20 refers to the air conditioning pattern table shown in FIG. 10, selects the air conditioning pattern (10) in which the area temperature conditions match, The air conditioning operation in the heat buildup elimination mode is performed according to the operation conditions preset in the pattern (10) (S-15). The controller 20 controls the output (50%) (blowing capacity) of the blower fan 26 when the heat accumulations 49a to 49c occur in the areas A, B, C, the opening degree (30%) of the first motor damper 29, the second motor damper Opening (70%), ON / OFF (ON) of the first wind guiding mechanism 32, ON / OFF (ON) of the second wind guiding mechanisms 46a to 46c, and use position of the second wind guiding mechanisms 46a to 46c 1), (2), (3), the preset operation conditions of the wind speed ratio "5: 3: 1" of the blowing unit 19a are implemented.

  The controller 20 transmits an opening degree instruction signal of the opening degree (30%) of the first motor damper 29 to the control unit of the motor damper 29 according to the preset operation condition of the selected air conditioning pattern (10), and the opening degree of the second motor damper 31 An opening instruction signal of (70%) is transmitted to the control unit of the motor damper 31. The control unit of the first motor damper 29 matches the opening degree to that of the opening degree instruction signal (30%) according to the opening degree instruction signal from the controller 20, and maintains the opening degree. The control unit of the second motor damper 31 matches the opening degree to that of the opening degree instruction signal (70%) according to the opening degree instruction signal from the controller 20, and maintains the opening degree.

  The controller 20 transmits an output instruction signal of the output (50%) of the blower fan 26 selected from the air conditioning pattern table to the control unit of the blower fan 26. The control unit of the blower fan 26 performs inverter control of the output of the blower fan 26 according to the output instruction signal (50%) from the controller 20, and maintains the output.

  In the air conditioning operation in the heat accumulation elimination mode for the areas A, B, and C, air is supplied from the air conditioners 16a to 16c by adjusting the opening degree of the first and second motor dampers 29, 31 and the output of the blower fan 26. When all the cold air is 100%, the ratio of the cold air supplied to the underfloor space 30 is 70%, and the ratio of the cold air supplied to the blowout units 19a to 19c is 30%.

  The controller 20 outputs an open signal (ON signal to the air guide mechanisms 46a to 46c installed at the use position (1), (2), (3) of the air guide mechanism according to the preset operation condition of the selected air conditioning pattern (10). Send). In the air guide mechanisms 46 a to 46 c, the automatic opening / closing device operates in accordance with the open signal transmitted from the controller 20, and the air guide mechanisms 46 a to 46 c rotate downward from the ceiling 51 and hang down from the ceiling 51.

  The wind guide mechanism 46b is rotatably installed at the position (2) of the ceiling 51 of the cold aisle 14, and the wind direction plate 47 and the support frame 48 slidably supporting the wind direction plate 47 (support member) And are formed from. An automatic opening and closing device connected to the controller 20 by a signal line is installed in the air guiding mechanism 46 b, and the air guiding mechanism 46 b is automatically pivoted vertically to the ceiling 51 by the automatic opening and closing device. In the wind guide 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 1/3 A vent 50 is formed in the In the air guide mechanism 46 b, as shown by the arrow in FIG. 13, the cool wind is guided downward by the wind direction plate 47 located in the lower 2/3 of the support frame 48, and the cool air is formed in the upper 1⁄3 of the support frame 48 It flows forward through the vent 50.

  The wind guide mechanism 46 c is pivotably installed at the position (1) of the ceiling 51 of the cold aisle 14 and is formed of the wind direction plate 47 and the support frame 48 (support member) slidably supporting the wind direction plate 47. It is done. An automatic opening and closing device connected to the controller 20 by a signal line is installed in the air guiding mechanism 46 c, and the air guiding mechanism 46 c is automatically pivoted in the vertical direction with respect to the ceiling 51 by the automatic opening and closing device. In the wind guide mechanism 46c, the wind direction plate 47 is positioned at the lower 1/3 of the support frame 48, the lower 1/3 of the support frame 48 is closed, the upper 2/3 of the support frame 48 is opened, and the upper 2/3 A vent 50 is formed in the In the air guide mechanism 46c, as shown by the arrow in FIG. 15, the cool wind is guided downward by the wind direction plate 47 located in the lower 1/3 of the support frame 48, and the cool air is formed in the upper 2/3 of the support frame 48. It flows forward through the vent 50.

  By adjusting the vertical length of the wind direction plate 47, it is possible to adjust the extension dimension (closing dimension) of the air guiding mechanisms 46a to 46c from the top 21 of the server rack 13 upward, and the air guiding mechanism An extension dimension (opening dimension) of the vent hole 50 of 46 a to 46 c from the ceiling 51 downward can be adjusted. Further, by adjusting the length of the wind direction plate 47 in the vertical direction, it is possible to adjust the extension dimension (closing dimension) of the air guide mechanisms 46a to 46c from the ceiling 51 downward, and the wind guide mechanisms 46a to 46c. An extension dimension (open dimension) of the vent 50 from the top 21 of the server rack 13 can be adjusted.

  In the air conditioning operation in the heat buildup elimination mode, the air flow paths of the first motor damper 29 and the second motor damper 31 are opened to the set opening (30%, 70%), and the blower fan 26 has the set output (50%, 50%) The cold air (cooling air) cooled to a predetermined temperature by the first to third air conditioners 16a to 16c is supplied to the first to third blowout units 19a to 19c through the first air supply duct 27. The air is supplied to the underfloor space 30 of the air conditioning room 12 through the second air supply duct 28. The movement path of the cold air supplied to the underfloor space 30 is the same as that of the air conditioning operation in the normal mode shown in FIG.

  In the air conditioning operation in the heat buildup elimination mode of FIG. 12, the ratio of the wind speed of the cold air supplied from the first air outlet 40 a is “5”, and the ratio of the wind speed of the cold air supplied from the second air outlet 40 b is The opening degrees of the first and third wind speed adjusting dampers 36a to 36c are adjusted such that the ratio of the wind speed of the cold air supplied from the third air outlet 40c to "3" is "1".

  The cool air supplied forward from the first air outlet 40a of the blowout unit 19a passes through the vent hole 50 of the air guide mechanism 46c and also passes through the vent hole 50 of the air guide mechanism 46b. The cold air supplied from the first air outlet 40a travels along the ceiling 51 of the cold aisle 14 to the heat accumulation 49a generated in the area C by the Coanda effect, and the cold aisle 14 and the hot aisle 15 by the Coanda effect. It goes to the heat accumulation 49a along the dividing wall 22 and reaches the heat accumulation 49a. The cold air supplied from the first air outlet 40a is supplied to the heat accumulation 49a in the area C, whereby the heat accumulation 49a is cooled by the cold air.

  The cold air supplied forward from the second air outlet 40b of the blowout unit 19a passes through the vent holes 50 of the air guide mechanism 46c and travels to the heat accumulations 49a, 49b generated in the areas B, C of the cold aisle 14 At the same time, the cold aisle 14 and the hot aisle 15 are separated and directed to the heat reservoirs 49a and 49b along the stagnation wall 22, and turned downward from the front and rear direction by the wind direction plate 47 of the wind guide mechanism 46b, toward the heat reservoir 49b It is induced and reaches the heat reservoir 49b. The cold air supplied from the second air outlet 40b is supplied to the heat accumulation 49b in the area B, whereby the heat accumulation 49b is cooled by the cold air.

  The cold air supplied forward from the third air outlet 40c of the blowout unit 19a travels along the ceiling 51 of the cold aisle 14 to a heat accumulation 49c generated in the area A, and also the cold aisle 14 and the hot aisle 15 Along the dividing wall 22, the heat reservoir 49c is directed, and the wind direction plate 47 of the air guide mechanism 46c turns downward from the front-rear direction to be guided toward the heat reservoir 49c to reach the heat reservoir 49c. The cold air supplied from the third air outlet 40c is supplied to the heat accumulation 49c in the area A, whereby the heat accumulation 49c is cooled by the cold air.

  The cold air that has cooled the heat accumulations 49a to 49c absorbs the heat of the heat accumulations 49a to 49c while absorbing the heat of the server and turns into warm air, and the warm air flows out from the side of the server rack 13 and the hot aisle 15 Flow into The warm air that has flowed into the hot aisle 15 flows into the ceiling space 45 of the air conditioning room 12 through the hot air suction opening, then flows into the machine room 23 from the air conditioning room 12 through the ceiling space 45, and the air conditioner 16a again. To reflux. The air (air-fuel mixture with the outside air) flowing into the air conditioner 16a is cooled by the air conditioner 16a and becomes cold air, and is again supplied from the blow-out unit 19a to the heat reservoirs 49a to 49c in the areas A, B and C.

  While performing the air conditioning operation in the heat buildup elimination mode, the controller 20 sets the first temperature measured by the temperature sensors 17a to 17c within the set temperature range, and the heat buildup 49a to 49c generated in the areas A, B and C It is judged whether it eliminated (S-16). In step 16 (S-16), when the controller 20 determines that the heat accumulations 49a to 49c are not eliminated (when the first temperature exceeds the set temperature), the heat accumulation elimination mode of pattern (10) is performed. Continue the air conditioning operation of (S-17). The controller 20 determines whether stop of the air conditioning operation in the heat accumulation elimination mode in the system 10 is instructed while continuing the air conditioning operation in the heat accumulation elimination mode (S-18), and the pattern (10 In step 16 (S-16), it is monitored whether the first temperature is within the set temperature range while continuing the air conditioning operation in the heat buildup elimination mode.

  In step 16 (S-16), when the controller 20 determines that the heat accumulations 49a to 49c have been eliminated (when the first temperature falls within the set temperature range), the air conditioning in the heat accumulation elimination mode of pattern (10) The operation is interrupted, and the air conditioning operation in the normal mode is performed (S-10), and it is determined whether the first temperature measured by the first temperature sensors 17a to 17i exceeds the set temperature (S-11).

  If the heat accumulation 49c in only the area C is eliminated, the controller 20 performs the air conditioning operation in the heat accumulation elimination mode for the areas A and B according to the air conditioning pattern (7) in which the area temperature conditions match (S-15 When the heat accumulations 49b and 49c in the areas B and C are eliminated, the controller 20 performs the air conditioning operation in the heat accumulation elimination mode for the area A according to the air conditioning pattern (1) in which the area temperature conditions match (S- 15). When the heat accumulation 49a only in the area A is eliminated, the controller 20 performs the air conditioning operation in the heat accumulation elimination mode for the areas B and C according to the air conditioning pattern (9) in which the area temperature conditions match (S-15), When the heat accumulations 49b and 49c in the areas A and C are eliminated, the controller 20 performs the air conditioning operation in the heat accumulation elimination mode for the area B according to the air conditioning pattern (2) in which the area temperature conditions match (S-15) .

  While the air conditioning system 10 for information processing equipment room supplies cold air from the underfloor space 30 to the cold aisle 14, it supplies air from the blowout units 19a to 19c toward heat accumulation generated at a predetermined location of the cold aisle 14 Therefore, the cold air can be supplied toward the heat accumulation of the cold aisle 14, the heat accumulation can be selectively cooled, and the heat accumulation can be eliminated. Since the air conditioning system 10 can eliminate the heat accumulation of the cold aisle 14, the server in the vicinity of the heat accumulation accommodated in the server rack 13 can be cooled, and the temperature rise of the server can be prevented. It is possible to prevent the failure of

  The air conditioning system 10 for the information processing equipment room supplies cold air to the heat reservoirs from the blowout units 19a to 19c connected to the air conditioners 16a to 16c, thereby cooling the heat reservoirs. There is no need to install a plurality of local cooling devices in addition to the air conditioner as in the air conditioning system, energy used for cooling the server can be reduced, and energy saving in the system 10 can be achieved. When the first temperature exceeds the set temperature, the air conditioning system 10 determines that heat accumulation is generated in the areas A to F of the cold aisle 14 near the first temperature sensors 17a to 17i that measure the first temperature. As a result, it is possible to accurately detect heat accumulation that has occurred at a predetermined location (areas A to F) of the cold aisle 14 by using the first temperature sensors 17a to 17i.

  FIG. 17 is a top view of the air conditioning room 12 of the data center 11 provided with a wind guiding mechanism 46 d and 46 e (second wind guiding mechanism) shown as another example, and FIG. 18 shows the guide used in FIG. It is a front view of the wind mechanism 46d. In the cold aisle 14 of the air conditioning room 12, two air guide mechanisms 46d and 46e spaced apart in the front-rear direction are installed. The air guide mechanisms 46 d and 46 e are formed of a wind direction plate 47 and a support frame 48 (support member) that slidably supports the wind direction plate 47 in the vertical direction.

  In the wind guide mechanism 46d, the wind direction plate 47 is located in the first space 51a on one side in the lateral direction, the first space 51a is closed, and the wind direction plate 47 exists in the second space 51b on the other side in the lateral direction. The second space 51 b is opened without forming the vent 50. In the wind guide mechanism 46e, the wind direction plate 47 is positioned in the second space 51b on the other side in the lateral direction, the second space 51b is closed, and the wind direction plate 47 exists in the first space 51a on one side in the lateral direction. Without opening, the first space 51a is opened, and the vent 50 is formed. An automatic opening and closing device is installed in the air guide mechanisms 46d and 46e.

  In the air conditioning system 10 for information processing equipment room using the air guide mechanisms 46d and 46e, when the heat accumulation 49d is generated biased to the side portion on one server rack 13 side, the air is supplied from the blowout units 19a to 19c. The cold air strikes the wind direction plate 47 of the air guide mechanism 46d, and the cold air is guided to the heat reservoir 49d. Furthermore, when a heat reservoir 49e is generated in front of the heat reservoir 49d and on the side portion of the other server rack 13 side, the cold air supplied from the blowout units 19a to 19c vents the air guide mechanism 46d. The air passes through 50 toward the air guide mechanism 46e, and the cold air strikes the wind direction plate 47 of the air guide mechanism 46e, and the cold air is guided to the heat reservoir 49e.

  If the heat storage 49d is generated on one side of the cold aisle 14, the air conditioning system 10 for the information processing room using the air guiding mechanisms 46d and 46e is installed in the position of the heat storage 49d. By turning on one of the air guide functions of the mechanism 46d, cold air can be induced to the heat reservoir 49d, and by turning off the other air guide function of the air guide mechanism 46d, the heat reservoir 49d Cold air can be supplied to the heat reservoir 49 e generated at a distance. Even if the heat accumulations 49d and 49e are biased toward the side of the cold aisle 14, the air conditioning system 10 can guide the cool air to the heat accumulations 49d and 49e using the air guide mechanisms 46d and 46e. The heat reservoirs 49d and 49e can be cooled to eliminate the heat reservoirs 49d and 49e.

  FIG. 19 is a front view of a wind guide mechanism 46 f (second wind guide mechanism) shown as another example. The wind guiding mechanism 46f is configured such that the wind direction plates 47 positioned in the first space 51a on one side in the lateral direction and the second space 51b on the other side in the lateral direction can slide the wind direction plates 47 vertically. It is formed of a support frame 48 (support member) to support. In the first space 51a, 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 1/3 A vent 50 is formed in the In the second space 51b, the wind direction plate 47 is positioned at the lower 1/3 of the support frame 48, the lower 1/3 of the support frame 48 is closed, the upper 2/3 of the support frame 48 is opened, and the upper 2/3 A vent 50 is formed in the The vertical dimension of the wind direction plate 47 and the vertical dimension of the vent 50 are not particularly limited, and the wind direction plate 47 or the vent 50 is selected according to at least one of the heat accumulation location and the heat stagnation temperature. The dimensions can be adjusted freely.

  When the air guide mechanism 46f is used in the air conditioning operation in the heat accumulation elimination mode, a heat accumulation is generated at one side of the area of the cold aisle 14 and a heat accumulation occurs at the other side of the area. When a heat accumulation having a low temperature occurs, cold air supplied from the second and third air outlets 40b and 40c of the blowout units 19a to 19c closes the lower 2/3 of the support frame 48 in the first space 51a. The cold air is directed to the heat pool on one side of the area to hit the wind direction plate 47, and the heat pool on one side of the high temperature is cooled. Furthermore, the cold air supplied from the third air outlets 40c of the blowout units 19a to 19c strikes the wind direction plate 47 closing the lower 1⁄3 of the support frame 48 in the second space 51b, and the cold air flows on the other side of the area It is induced to the heat reservoir of the part and the heat reservoir on the other side where the temperature is low is cooled.

  In addition, the cold air supplied from the first air outlets 40a of the blowout units 19a to 19c passes through the vent holes 50 formed in the upper 1/3 of the support frame 48 in the first space 51a, and the heat accumulation in the front The cold air is supplied to the heat accumulation generated forward, and the heat accumulation is cooled. Furthermore, the cold air supplied from the first and second air outlets 40a and 40b of the blowout units 19a to 19c passes through the vent 50 formed on the upper 2/3 of the support frame 48 in the second space 51b, The cold air is supplied to the heat accumulation generated ahead of the heat accumulation in the front, and the heat accumulation is cooled.

  Using the wind guide mechanism 46f, the cool air is supplied to the heat pool on one side of the area of the cold aisle 14, and the cold air is supplied to the heat pool on the other side of the area Thus, it is possible to simultaneously eliminate the heat accumulation on one side where the temperature is high and the heat accumulation on the other side where the temperature is low. Furthermore, it is possible to supply a plurality of heat accumulation cold air generated in the front and back direction, and it is possible to simultaneously eliminate a plurality of heat accumulation generated in the front and back direction.

  FIG. 20 is a front view of a wind guide mechanism 46g (second wind guide mechanism) shown as another example. The wind guiding mechanism 46g allows the wind direction plate 47 located in the first space 51a on one side in the lateral direction and the second space 51b on the other side in the lateral direction, and the wind direction plates 47 to slide vertically. It is formed of a support frame 48 (support member) to support. In the first space 51a, the wind direction plate 47 is positioned on the upper 1/3 of the support frame 48, the upper 1/3 of the support frame 48 is closed, the lower 2/3 of the support frame 48 is opened, and the lower 2/3 A vent 50 is formed in the In the second space 51b, the wind direction plate 47 is positioned on the upper 2/3 of the support frame 48, the upper 2/3 of the support frame 48 is closed, the lower 1⁄3 of the support frame 48 is opened, and the lower 1⁄3 A vent 50 is formed in the The vertical dimension of the wind direction plate 47 and the vertical dimension of the vent 50 are not particularly limited, and the wind direction plate 47 or the vent 50 is selected according to at least one of the heat accumulation location and the heat stagnation temperature. The dimensions can be adjusted freely.

  When the air guide mechanism 46g is used in the air conditioning operation in the heat accumulation elimination mode, a heat accumulation lower in temperature occurs in one side of the area of the cold aisle 14, and the other side of the area is more than one side. When heat accumulation having a high temperature occurs, cold air supplied from the first air outlets 40a of the blowout units 19a to 19c strikes the wind direction plate 47 which closes the upper third of the support frame 48 in the first space 51a. The cold air is guided to the heat pool on one side of the area, and the heat pool on one side having a lower temperature is cooled. Furthermore, the cold air supplied from the first and second air outlets 40a and 20b of the blowout units 19a to 19c strikes the wind direction plate 47 closing the upper 2/3 of the support frame 48 in the second space 51b, and the cold air is The heat pool on the other side of the higher temperature is cooled, which is induced to the heat pool on the other side of the

  Using the wind guide mechanism 46g, the cool air is supplied to the heat pool on one side of the area of the cold aisle 14, and the cold air is supplied to the heat pool on the other side of the area Thus, it is possible to simultaneously eliminate the heat accumulation on one side where the temperature is low and the heat accumulation on the other side where the temperature is high.

The side view of the air-conditioning room of the data center which installed the air conditioning system for information processing room shown as an example, and a machine room. The front view of the air-conditioning room which installed the air conditioning system for information processing equipment room. The top view of the air-conditioning room of the data center which installed the air conditioning system for information processing equipment room, and a machine room. The side view of the blowing unit shown as an example. The side view of the wind guide mechanism shown as an example. The front view of the air guide mechanism of FIG. The side view similar to FIG. 1 explaining the air conditioning operation of normal mode of an air conditioning system when heat accumulation has not generate | occur | produced in the cold aisle. The front view similar to FIG. 2 explaining the air conditioning driving | operation of the normal mode of the air conditioning system when heat accumulation has not generate | occur | produced in the cold aisle. The flowchart explaining each air conditioning operation implemented in an air conditioning system. The figure which shows an example of the air-conditioning pattern table in the air-conditioning driving | operation of the heat buildup elimination mode stored in the memory device of the controller. The side view similar to FIG. 1 explaining an example of the air conditioning operation of the heat buildup elimination mode when a heat buildup generate | occur | produces in the area of a cold aisle. The side view similar to FIG. 1 explaining the other example of the air-conditioning driving | operation of the heat buildup elimination mode when a heat buildup generate | occur | produces in the area of a cold aisle. The side view of the wind guide mechanism shown as another example. The front view of the air guide mechanism of FIG. The side view of the wind guide mechanism shown as another example. The front view of the air guide mechanism of FIG. The top view of the machine room of the data center which installed the wind guide mechanism shown as another example. The front view of the wind guide mechanism currently used for FIG. The front view of the wind guide mechanism shown as another example. The front view of the wind guide mechanism shown as another example.

10 information processing equipment room air conditioning system 11 data center 12 air conditioning room (information processing equipment room)
13 server rack 14 call aisle 15 hot aisle 16a-16c air conditioner 17a-17i first temperature sensor 18 second temperature sensor 19a first blowout unit 19b second blowout unit 19c third blowout unit 20 controller 21 top 22 inclined wall 26 air flow Fan (blower)
27 first air supply duct 28 second air supply duct 29 first motor damper (first damper)
30 floor space 31 second motor damper (second damper)
32 first air guide mechanism 33 bottom portion 34 air supply chamber 35a first branch duct 35b second branch duct 35c third branch duct 36a first wind speed adjustment damper (first to nth wind speed adjustment mechanism)
36b Second wind speed adjustment damper (first to nth wind speed adjustment mechanism)
36c 3rd wind speed adjustment damper (1st to n th wind speed adjustment mechanisms)
37 blowout housing 38 internal space 39a first air inlet (air inlet)
39b 2nd air inlet (air inlet)
39c 3rd air inlet (air inlet)
40a First air outlet (first to nth air outlets)
40b Second air outlet (first to nth air outlets)
40c Third air outlet (first to nth air outlets)
41 partition plate 42a first air channel (first to nth air channels)
42b Second air flow path (first to nth air flow path)
42c Third air flow path (first to nth air flow path)
43 bypass duct 44 bypass damper 45 ceiling space 46a to 46g second wind guide mechanism (wind guide mechanism)
47 Wind direction board (shield board)
48 Support frame (support member)
49 heat accumulation 49a-49c heat accumulation 50 air vents 51 ceiling

Claims (11)

A plurality of cross-wise spaced apart server racks extending in one direction and intersecting the one direction, a call aisle extending in the one direction located between the adjacent server racks, and the adjacent server racks A hot aisle located on the opposite side of the cold aisle across the server rack and extending in one direction parallel to the cold aisle, and an air conditioning system for supplying cold air of a predetermined temperature to the cold aisle The cold air supplied from the air conditioner flows through the underfloor space into the cold aisle, and the cold air flows through the cold aisle from the cold aisle through the server rack while the server is accommodated in the server rack. By cooling, it changes to warm air that has absorbed the heat of the server, and while the warm air flows from the server rack into the hot aisle, the hot aisle from the hot aisle In the air conditioning system for an information processing equipment chamber for recirculating the serial air conditioner,
The air conditioner is connected to a blowout unit disposed above the server rack and supplying cool air in one direction from one end of the cold aisle toward the other end. ,
The air conditioning system for the information processing equipment room includes a plurality of first temperature sensors, and the plurality of first temperature sensors are installed on the top of the server rack located on the side of the cold aisle and one of the cold aisles. Aligned in the one direction from one end of the server rack to the other end, measuring the first temperature of the cold aisle at the top of the server rack, and installing in the middle of the server rack located on the side of the cold aisle Aligned in one direction from one end of the cold aisle to the other end, measuring the first temperature of the cold aisle in the middle of the server rack, and positioned on the side of the cold aisle Installed at the bottom of the server rack and arranged in the one direction from one end of the cold aisle to the other end, at the bottom of the server rack. A first temperature of the cold aisle measured that,
In the air conditioning system for the information processing equipment room, while supplying cold air from the underfloor space to the cold aisle, the first temperature measured by the first temperature sensors is compared with the set temperature, and the first temperature is the above If the set temperature is exceeded, it is determined that heat accumulation is occurring in the cold aisle near the first temperature sensor whose first temperature is measured, and the cold air is supplied from the blowout unit toward the heat accumulation. An air conditioning system for information processing equipment rooms characterized by The plurality of first temperature sensors installed at the top of the server rack are arranged at equal intervals in the one direction from one end of the cold aisle to the other end, and the middle of the server rack The plurality of first temperature sensors disposed in one of the plurality of first temperature sensors are arranged at equal intervals in the one direction from one end of the cold aisle to the other end and disposed at the bottom of the server rack; The plurality of first temperature sensors are arranged at equal intervals in the one direction from one end of the cold aisle to the other end, and the first temperature sensors are installed at an intermediate portion of the server rack A temperature sensor is located immediately below the first temperature sensor installed at the top of the server rack, and the first temperature sensor installed at the bottom of the server rack is installed in the middle of the server rack The information processing equipment room air-conditioning system according to claim 1 positioned immediately below the first temperature sensor.   In the air conditioning system, the air conditioner has a first damper that adjusts an amount of cold air supplied to the blowout unit, and a second damper that adjusts an amount of cold air supplied to the underfloor space. Assuming that the total volume of cold air supplied from the air conditioner is 100%, the proportion of cold air supplied from the blow-out unit is in the range of 10 to 30%, and the proportion of cold air supplied to the underfloor space is The air conditioning system for information processing equipment room according to claim 1 or 2 which adjusts an opening of said 1st and 2nd damper so that it may become 70 to 90% of range.   The air conditioner has at least one blower for sending cold air to the underfloor space and the blowout unit, and in the air conditioning system, when the total volume of cold air supplied from the air conditioner is 100%. Adjusting the blowing capacity of the blower so that the proportion of cold air supplied to the blowout unit is in the range of 10 to 30%, and the proportion of cold air supplied to the underfloor space is in the range of 70 to 90% An air conditioning system for an information processing equipment room according to any one of claims 1 to 3.   The blowout unit includes an air inlet, first to nth air outlets aligned vertically and opening in 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 installed in the air flow paths to adjust the wind speed of cold air passing through the air flow paths, the air conditioning system utilizing the wind speed adjustment mechanisms 5. The speed of cold air supplied from the first to n-th air outlets is adjusted, and the reach distance at the cold aisle of the cold air supplied from the outlets is changed. An air conditioning system for an information processing equipment room according to claim 1.   In the air conditioning system, cold air is supplied to a heat reservoir generated in the cold aisle at a long distance from the position of the blowout unit from a blowout port located at an upper stage of the first to nth air blowout ports, and the blowout A cold air is supplied to the heat accumulation generated in the cold aisle at an intermediate distance from the position of the unit from the outlet located at the middle stage of the first to n-th air outlets, and a short distance from the position of the outlet unit The air conditioning system for an information processing equipment room according to claim 5, wherein a cold air is supplied to the heat accumulation generated in the cold aisle from an outlet located at the lower end of the first to n-th air outlets.   The air conditioning system includes an air guiding mechanism installed at a predetermined place on a ceiling of the cold aisle, and the air conditioning system uses the air guiding mechanism to cool air supplied from the blowout unit as the heat accumulation. The air conditioning system for information processing equipment room according to any one of claims 1 to 6, wherein   The air guide mechanism is capable of adjusting the dimension of extension extending downward from the ceiling, and the dimension of extension extending from the top of the server rack, and in the air conditioning system, the location where the heat accumulation occurs Adjusting the downward extension dimension of the air guide mechanism in accordance with at least one of the temperature of the heat reservoir and the temperature guide of the heat reservoir in accordance with at least one of the location of the heat reservoir and the temperature of the heat reservoir. The air conditioning system for an information processing room according to claim 7, wherein the dimension of the wind mechanism extending upward is adjusted.   In the air conditioning system, a plurality of the air guide mechanisms are installed side by side in the cross direction, and the air guide function of the air guide mechanisms is turned on / off according to the generation location of the heat accumulation. An air conditioning system for an information processing equipment room according to claim 1.   The air guide mechanism according to any one of claims 7 to 9, wherein the air guide mechanism is 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. Air conditioning system for information processing equipment room. The cold air supplied from the blowout unit travels to the heat accumulation along the ceiling of the cold aisle by the Coanda effect, and divides the cold aisle and the hot aisle by the Coanda effect, the heat along the stagnation wall The air conditioning system for information processing equipment room according to any one of claims 1 to 10, which is directed to accumulation.

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